WO2018039948A1 - Fastening connection structure, fastening connection assembly and crankshaft connecting rod mechanism - Google Patents

Fastening connection structure, fastening connection assembly and crankshaft connecting rod mechanism Download PDF

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Publication number
WO2018039948A1
WO2018039948A1 PCT/CN2016/097442 CN2016097442W WO2018039948A1 WO 2018039948 A1 WO2018039948 A1 WO 2018039948A1 CN 2016097442 W CN2016097442 W CN 2016097442W WO 2018039948 A1 WO2018039948 A1 WO 2018039948A1
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WIPO (PCT)
Prior art keywords
rotation
rotation preventing
sleeve
hole
screw
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PCT/CN2016/097442
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French (fr)
Chinese (zh)
Inventor
杨东佐
Original Assignee
杨东佐
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Publication date
Application filed by 杨东佐 filed Critical 杨东佐
Priority to PCT/CN2016/097442 priority Critical patent/WO2018039948A1/en
Publication of WO2018039948A1 publication Critical patent/WO2018039948A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/02Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/10Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt

Definitions

  • the invention relates to a fastening connection technology of a thread pair mechanically coupling two or more objects; in particular, a mechanical static connection of a crankshaft linkage mechanism, a track structure, an aircraft, a ship, a device, and an aviation through a screw and a lock nut
  • the fastening components and the crankshaft linkage mechanism are particularly harsh in use environment such as large vibration, high temperature environment, large load, etc., and the connection reliability of the mechanical connection of the thread pair is particularly high.
  • Threaded sub-mechanical static joints between objects have some bolts broken at key parts, safety problems caused by failure of threaded connections and safety accidents, which are often encountered in the world, and are a common problem faced by technicians in the field. Solve the problem that has not been solved. Small bolts, large accidents, and frequent major accidents due to bolt breakage, such as the collapse of the connecting rod bolts of the engine of the automobile; the accident of 1 death and 4 injuries caused by the break of the bolts of Harbin tower crane on April 18, 2009; Taiwan's media reported that the No. 1 reactor of the No. 2 Plant of the Nuclear Power Plant detected 7 anchor bolt breaks and damages that may cause nuclear safety accidents; the guidance of the No.
  • the reliability of the threaded connection is ensured by the self-locking of the friction of the thread pair and the friction between the contact faces of the thread pair.
  • the connecting thread has a certain self-locking property and does not automatically loosen under static load conditions.
  • the friction between the pairs of threads will disappear or decrease instantaneously; at the same time, in the case of high temperature or temperature changes, the material will creep and stress relaxation, and the friction will be reduced. Under multiple actions, the threaded connection is gradually released.
  • the main reason for the failure of the threaded connection is that the thread is loose due to the reduction of the pre-tightening force. Therefore, the essence of the threaded connection is to prevent the thread pair from rotating in the direction of loosening (that is, the direction between the threaded hole and the externally threaded portion). Rotate in the direction of rotation, such as the rotation between the bolt and the nut.
  • the existing mechanical mechanical anti-loosening methods mainly include mechanical anti-loose methods such as a split pin, a stop pad and a string wire rope. Many of the aircraft are now also using the anti-loose method of the series wire rope.
  • the lock nut is provided with a threaded through hole and an internal gear-shaped rotation stop hole communicating therewith, and the minimum hole diameter of the rotation stop hole is larger than the diameter of the threaded through hole.
  • the rotation preventing sleeve is provided with a rotation preventing through hole, and the outer circumference of the rotation preventing sleeve is an outer gear shape, and a rotation preventing strip is arranged on the wall of the rotation preventing through hole, and a rotation preventing groove is matched with the rotation preventing strip on the screw.
  • the outer gear-shaped outer circumference of the anti-rotation sleeve and the gear-shaped hole wall of the lock nut rotation-stop hole cooperate with the constraint lock nut to rotate relative to the rotation sleeve, and the rotation sleeve of the rotation sleeve is inserted into the rotation groove of the screw to restrain the screw relative to the rotation sleeve Rotating, so the screw and the lock nut are mounted non-rotatably.
  • the anti-loose nut connection structure includes connecting parts and Through the screw of the connecting piece, the screw on the screw is fastened to the connecting piece, the outer side of the nut is sleeved with a anti-loose ferrule, and the anti-rotation structure between the anti-rotation ferrule and the connecting piece is provided, and the anti-rotation structure includes a corresponding connector
  • the sinking groove provided by the nut is arranged in the sinking groove after the nut is screwed, and the outer ring of the anti-loose ferrule is provided with a chuck, and the inner side wall of the sinking groove is provided with a card slot for the chuck to be inserted; the height of the anti-loose ferrule is less than Shen
  • the height of the groove, the anti-loose ferrule and the nut and the sink are an interference fit.
  • the anti-loose nut connecting structure of the invention has a anti-rotation ferrule and a anti-rotation structure between the anti-loose ferrule and the connecting member, and the inner ring of the anti-loose ferrule is a regular hexagonal structure matched with the nut, preventing The inner ring of the loose ferrule and the nut cannot rotate relative to each other, and the anti-rotation structure prevents the anti-loose ferrule from rotating relative to the connecting member, thereby preventing the nut from loosening after being fastened.
  • the anti-loose nut connecting structure realizes the prevention of the looseness of the nut, but on the one hand, since the height of the anti-loose ferrule is smaller than the height of the sinking groove, and the anti-loose ferrule is in an interference fit with the nut and the sinking groove, the disassembly prevention When loosening the nut connection structure, the anti-loose and anti-loose ferrule cannot be taken out from the sinking groove, and the anti-loose and anti-loose ferrule cannot be taken out, so that the nut and the screw cannot be separated, so that the use of the threaded pair connection is lost.
  • Patent No. ZL201520399393.8 discloses a self-tightening nut and a bolt fastener.
  • the fastener includes a self-tightening nut body, a self-tightening washer and a common bolt; the self-tightening nut body is in contact with the self-tightening washer The surface is a smooth transition spiral surface; the self-tightening nut body is screwed with the common bolt; the bolt fastener includes a self-tightening bolt, a self-tightening washer and a common nut; the ordinary nut is screwed with the self-tightening bolt.
  • the self-tightening nut and the bolt fastener adopt a self-tightening principle, and a self-tightening structure is arranged on the nut or the bolt to make the self-tightening effect after the locking, so that the nut is no longer displaced or loosened.
  • This kind of self-nut also known as self-tightening nut and never loose nut, and claims that its anti-loose ability exceeds the hardlock nut, has been reported in CCTV. Since this nut is not widely used, its anti-loosening effect cannot be judged.
  • a front-end single-thread spiral rear double-line anchoring screw which mainly comprises a screw, and the screw has a self-tapping thread and a screw tail.
  • the connecting end is provided with a connecting structural member, the connecting structural member is a hexagonal head, the outer hexagon head is provided with a gasket, and the bottom of the gasket is provided with a locking tooth.
  • a screw structure is disclosed, and all the structures described are part of the screw structure. From the point of view of the figure and the words on the outer hexagonal head, it can be understood without any objection.
  • the gasket is a part of the screw, so there is no through-hole which is provided with the hexagonal head on the gasket.
  • the gasket is installed outside the outer hexagonal head, and the gasket and the screw are two separate members. Since the gasket is a part of the screw, during the screwing process of the screw, the anti-loose teeth on the gasket and the gasket also rotate with the screw, so that although the anti-loose teeth are provided on the gasket, the anti-loose teeth are embedded.
  • the connected object is not only embedded in the axially connected object, but in the process of rotation, the axial and circumferential displacements are embedded in the connected object, so that the anti-loose teeth will be connected to the connected object during the rotation of the screw.
  • the surface forms a circumferential groove that is shallower and deeper in the direction in which the screw is screwed.
  • the circumferential groove destroys the appearance of the connected object; on the other hand, the insertion force of the anti-loose tooth and the connected object is greatly reduced, and it can be said that the anti-loose effect of the anti-loose tooth on the screw is very limited; In particular, due to the presence of the embedded teeth, it is difficult for the screws to lock the connected objects. Therefore, the locking teeth of the screw of this structure can not play the role of relaxation, and the screw of this structure has no use value.
  • the present invention overcomes the prior art anti-loose technical solution that the anti-rotation sleeve restricts the rotation of the thread pair to the loosening direction, and it is difficult or impossible to stop the rotation sleeve. Taken out of the first tore hole, resulting in a useless inertia thinking.
  • the technical problem to be solved by the present invention is to provide a rotation stop that does not require a rotation stop member, and does not need to have a rotation stop sleeve on the outer circumference of the rotation preventing sleeve, and a rotation stop on the attachment body and the outer circumference of the rotation prevention sleeve.
  • the hole is used to restrain the rotation of the rotation sleeve relative to the attachment body, the structure is simple, the fastening structure of the rotation sleeve is convenient to install and disassemble, the fastening connection component, and the crankshaft linkage mechanism.
  • a fastening connection structure includes a fastening connection assembly, a mother body and an attachment body;
  • the fastening connection assembly includes a screw and a lock nut;
  • the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion
  • the mother body and the attached body are respectively provided with through holes that cooperate with the external thread portion of the screw; the screw passes through the through hole of the female body, and the through hole of the attached body is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body.
  • the fastening connection assembly further comprises a rotation preventing sleeve; the outer circumference of the lock nut is provided with a circumferentially evenly arranged, axial nut rotation preventing portion; and only one axial rotation preventing through hole is provided on the rotation preventing sleeve, and the rotation is stopped
  • the hole wall of the through hole is provided with a rotation preventing sleeve inner rotation portion matched with the nut rotation preventing portion; and an end surface of the rotation preventing sleeve is axially convexly provided with the restraining rotation preventing sleeve rotating toward the loosening direction of the lock nut
  • the sleeve rotation stop boss, the resisting position of the rotation sleeve of the rotation sleeve is in the circumferential direction and toward the loosening direction of the lock nut; the side of the attachment body facing away from the mother body is provided with the clearance fit of the rotation sleeve of the rotation sleeve
  • the body has
  • the boss is inserted into the anti-rotation hole of the body, and the rotation sleeve is axially restrained outside the lock nut; the rotation stop of the nut and the rotation stop of the rotation sleeve cooperate with the rotation of the lock nut relative to the rotation sleeve, and the rotation is stopped.
  • the sleeve anti-rotation boss is rotated by the attachment rotation stop hole on the side facing the unscrewing direction of the lock nut to restrain the rotation of the rotation sleeve relative to the attachment body; the screw and the lock nut are non-rotatably mounted with the base body and the attachment body.
  • a fastening connection structure includes a fastening connection assembly, a mother body and an attachment body;
  • the fastening connection assembly includes a screw and a lock nut;
  • the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion
  • the mother body and the attachment body are respectively provided with through holes that cooperate with the external thread portion of the screw;
  • the fastening connection assembly further includes a rotation preventing sleeve and a rotation preventing pad; the outer circumference of the locking nut is provided with a circumferentially evenly arranged axial nut.
  • the rotation preventing pad has a rotation preventing boss; the height of the rotation preventing protrusion of the rotation preventing sle
  • the sleeve anti-rotation boss is rotated by the anti-rotation pad on the side facing the unscrewing direction of the lock nut, and the rotation of the anti-rotation sleeve is opposite to the rotation-stopping pad; the screw and the lock nut are non-rotatably coupled with the mother body, the body, and the rotation stop.
  • the pads are mounted together.
  • a fastening connection assembly further includes a screw and a lock nut; the screw includes an external thread portion and a rotation preventing abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion; further includes a rotation preventing sleeve; and an outer circumference of the lock nut a circumferentially evenly arranged, axial nut rotation preventing portion; the rotation sleeve is annular, and only one axial rotation preventing through hole is provided in the rotation preventing sleeve, and a circumference is provided on the hole wall of the rotation preventing through hole a uniformly arranged, axially-rotating sleeve inner rotation preventing portion; axially convexly disposed on one end surface of the rotation preventing sleeve to cooperate with the auxiliary rotation preventing hole and/or the rotation preventing pad rotation preventing hole, and the restraining rotation preventing sleeve
  • the height of the rotation preventing sleeve of the rotation preventing sleeve is larger than the axial length of the rotation preventing portion of the rotation preventing sleeve.
  • the improvement further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw; and the rotation preventing pad rotation hole that is matched with the rotation preventing projection boss of the rotation preventing sleeve; On the end surface of the body, an anti-rotation pad anti-rotation boss that cooperates with the attachment rotation-receiving hole is protruded in the axial direction; the height of the anti-rotation sleeve rotation-rotation boss is less than or equal to the thickness of the rotation-proof pad.
  • the improvement further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw; and the rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the backing pad is separated from the rotation preventing pad
  • One side of the rotating sleeve is provided with an embedded portion or sprayed with friction particles; the embedded portion is an embedded protrusion provided on the end surface of the rotation preventing pad, or an embedded side disposed outside the rotation preventing pad; the rotation preventing sleeve The height is less than or equal to the thickness of the rotation pad.
  • the anti-rotation sleeve comprises an annular anti-rotation sleeve body, a central through-hole is arranged at the axial center of the anti-rotation sleeve body, and two or more elastic arms are elastically protruded from the same side of the anti-rotation sleeve body, and the elastic
  • the end portion of the arm forms a limiting portion radially inwardly, and the inner side surface of the limiting portion is provided with a rotation preventing portion inside the rotation preventing sleeve, and the limiting portion is provided with an inner side surface of the rotation preventing portion of the rotation preventing sleeve to form a non-closed portion Stopping the through hole; the rotation preventing sleeve of the rotation sleeve is on the same side as the limiting portion.
  • the anti-rotation sleeve further includes a resilient arm; the anti-rotation sleeve is provided with a sluice groove that communicates with the anti-rotation through-hole, cooperates with the elastic arm, and is used for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm.
  • the through hole is a non-closed hole; one end of the elastic arm is connected to a side of the rotation preventing sleeve that faces away from the rotation preventing boss of the rotation sleeve, and the other end is provided with one side of the rotation preventing sleeve of the rotation preventing sleeve
  • a limiting portion is disposed at an axial end of the end portion of the end of the rotation preventing through hole, the limiting portion is perpendicular to the axis of the rotation preventing through hole, and the limiting portion radially protrudes the rotation preventing through hole; the elastic arm and the avoidance groove Right.
  • the rotation preventing portion of the rotation preventing sleeve is disposed on the rotation preventing sleeve, instead of being disposed on the limiting portion of the elastic arm, the rotation preventing through hole is not deformed by the external force, and the rotation preventing effect is good.
  • a limit member is further included, and one stop sleeve corresponds to one limit member;
  • the limiting member comprises an annular limiting member body, and only one central through hole is arranged at a central position of the limiting member body, the minimum aperture of the central through hole is larger than the maximum aperture of the stopping through hole; and the limiting member body is further included
  • Two or more elastic arms are connected, and a limiting portion parallel to the limiting member body is arranged at an axial end of the elastic arm toward the central through hole axial direction, and the limiting portion radially protrudes the central through hole; two or more limits
  • the minimum inner diameter of the bit portion is smaller than the minimum inner diameter of the stop through hole;
  • the anti-rotation sleeve is provided with a hollow space for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm; the limiting member and the rotation preventing sleeve are mounted together, and the elastic arm and the rotation preventing sleeve are arranged
  • the space of the avoidance space cooperates; the limiting portion of the limiting member radially protrudes from the stopping through hole of the rotation preventing sleeve; in the direction parallel to the body of the limiting member, the maximum deformation amount of the elastic arm is larger than the limiting portion of the limiting member
  • the limiting portion of the limiting member protrudes from the limiting member body, and the limiting member body is mounted on one end surface of the rotation preventing sleeve, the elastic arm axially extends into the cutout space, and the limiting portion extends radially Stop turning in the through hole.
  • the rotation stop limit component of the structure, the limit member can be a plastic piece, and the limit piece is fixed with the rotation stop sleeve by placing the rotation stop sleeve in the mold of the molded plastic part and forming the limit piece. .
  • the elastic arm includes a first elastic arm connected to the limiting member body, and the central through hole is formed along the end of the first elastic arm a curved elastic arm of the axial center, a second elastic arm formed vertically along the end of the curved elastic arm, and a limiting portion disposed at an end of the second elastic arm; the first elastic arm, the curved elastic arm, and the The two elastic arms form a U-shaped elastic arm, and the U-shaped elastic arms face the groove.
  • the limit member can be a metal stamping part, and the limit piece and the rotation stop sleeve are fixed together by spot welding, and the cost is low.
  • the improvement further includes a limiting member; the limiting member comprises two or more elastic limiting members; the elastic limiting member comprises a horizontal limiting portion, and the first elastic arm bent by the vertical limiting portion is along the first The end of the elastic arm is bent toward the limiting portion and the parallel limiting portion is bent, and then bent obliquely upwards away from the limiting portion, and then bent obliquely downward, and then toward the limiting portion and the parallel limiting portion The bent buckle is further bent along the end of the buckle, and the second elastic arm is bent along the end of the second elastic arm away from the limit portion. unit;
  • the anti-rotation sleeve is provided with a hollow hole for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm;
  • the limiting portion of the elastic limiting member is directed toward the axial center of the rotation preventing sleeve, and the elastic buckle is passed through the hollow through hole on the rotation preventing sleeve, and is buckled by one side of the elastic limiting member, and one side is resisted
  • the portion of the elastic limiting member and the limiting member are mounted together, and the limiting portion of the elastic limiting member radially protrudes from the hole wall of the rotation preventing through hole of the rotation preventing sleeve, and between the elastic arms of the elastic limiting member The distance from the limiting portion of the elastic limiting member protrudes from the length of the hole wall of the rotation preventing through hole of the rotation preventing sleeve.
  • the anti-rotation limit component of the structure, the elastic limiting member can be a metal stamping part, and the elastic limiting piece is directly fastened on the anti-rotation sleeve to install the elastic limiting piece and the anti-rotation sleeve together, the cost is low, and the elastic limit is
  • the relative rotation sleeve can also be disassembled, and the material cost of the limiting member is greatly reduced.
  • the fastening connection assembly further comprises a limiting member; a locking groove is arranged on the locking nut; the limiting member is a snap ring, and the snap ring comprises a non-closed annular snap ring body on the card
  • the outer circumference of the ring body is provided with three or more limiting ribs protruding from the body of the snap ring; the inner circumference of the snap ring body is matched with the outer circumference of the bottom of the locking nut; the outer diameter of the limiting rib is larger than the rotation sleeve
  • the maximum aperture of the through-opening hole; the snap ring is mounted in the slot to axially limit the side of the anti-rotation sleeve away from the nut rotation preventing protrusion.
  • the snap ring of the structure does not need to be particularly large, and can limit the stop sleeve, and the limit effect is good.
  • the outer circumference of the lock nut is provided with a limiting portion accommodating space matched with the limiting portion, at the limit
  • the surface of the accommodating space facing the rotation preventing abutting portion of the screw is abutting surface for resisting the limiting portion; the rotation preventing sleeve is installed outside the locking nut, and the elastic arm is elastically deformed to insert the limiting portion into the limiting portion accommodating space.
  • the inner surface is restrained by the abutting surface of the accommodating space of the limiting portion, and is axially restricted to the side of the rotation preventing sleeve facing away from the external thread portion.
  • a rotation preventing boss for restraining the rotation of the lock nut screw relative to the parent body is axially convexly formed on the end surface of the screw rotation preventing portion toward the external thread portion.
  • a fastening structure for a fastening joint assembly comprising any one of the three, four, seven or twelve aspects, further comprising a base body and an attachment body; the base body and the attachment body are respectively provided with a joint with the external thread portion of the screw hole;
  • the fastening connection assembly further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw, and the rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the rotation preventing sleeve is stopped
  • the height of the boss is less than or equal to the thickness of the rotation pad;
  • the screw passes through the through hole on the female body, the through hole on the attached body, and the through hole of the rotation preventing pad is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body; the side of the rotation preventing pad facing away from the rotation preventing sleeve An inserting portion is provided, the hardness of the attached body is smaller than the hardness of the embedded portion of the rotation preventing pad, and the embedded portion of the rotation preventing pad is embedded in the attached body to restrain the rotation of the rotation preventing pad relative to the attached body; or spraying the side of the rotation preventing pad away from the rotation preventing sleeve
  • the friction particles, the friction particles of the rotation preventing pad and the attached body generate a sufficient friction force to restrain the rotation of the rotation preventing pad relative to the attached body; or the rotation preventing pad is fixed on the attached body by the fixing glue to restrain the rotation of the rotation preventing pad relative to the attached body;
  • the rotation sleeve is installed outside the lock nut, the
  • a non-rotation boss for restraining the rotation of the lock nut screw relative to the base body is axially protruded on the end surface of the screw rotation preventing portion toward the external thread portion;
  • the rotation preventing pad further includes a screw rotation preventing pad, the screw The rotation preventing hole on the rotation preventing pad is matched with the rotation preventing boss of the screw;
  • the inserting portion is provided on the side of the screw rotation preventing pad facing the female body, and the hardness of the female body is smaller than the hardness of the embedded portion of the screw rotation preventing pad, and the screw is stopped.
  • the embedded portion of the rotating pad is embedded in the female body to restrain the rotation of the screw rotation preventing pad relative to the mother body; or the frictional particles are sprayed on the side of the screw rotation preventing pad facing the mother body, and the frictional particles of the screw rotation preventing pad and the mother body generate a sufficient frictional constraint
  • the screw rotation preventing pad rotates relative to the mother body; or the screw rotation preventing pad is fixed on the mother body by the fixing glue to restrain the screw rotation preventing pad from rotating relative to the mother body; the rotation preventing protrusion of the screw is inserted into the rotation preventing pad of the screw rotation preventing pad and the binding screw in the rotation preventing hole Rotating relative to the screw stop pad; the screw is non-rotatably mounted to the parent body.
  • a fastening structure for a fastening joint assembly comprising any one of the three, four, seven or twelve aspects, further comprising a base body and an attachment body; the base body and the attachment body being an integral structure, forming an annular body with a fracture; The two ends of the fracture of the annular body are respectively provided with the opposite first mounting portion and the second mounting portion; the first mounting portion and the second mounting portion are respectively provided with through holes that cooperate with the external thread portion of the screw; The external thread portion is threadedly connected to the lock nut through the through hole in the first mounting portion and the through hole in the second mounting portion, and the screw and the lock nut mount the first mounting portion and the second mounting portion together, the screw Non-rotatably mounted together with the first mounting portion; a side of the first mounting portion facing away from the second mounting portion is provided with a first mounting portion stop hole that is clearance-fitted with the rotation preventing sleeve of the rotation preventing sleeve; Outside the lock nut, the rotation sleeve of the rotation s
  • a crankshaft linkage mechanism comprises a crankshaft, a connecting rod set and a fastening connection assembly;
  • the connecting rod set comprises a connecting rod body, a connecting rod big head cover and a connecting rod big head bearing bush;
  • the fastening connection assembly comprises a screw and a lock nut;
  • the screw comprises The external thread portion and the rotation preventing abutting portion, the rotation preventing abutting portion radially protrudes the external thread portion;
  • the connecting rod body comprises a connecting rod big head and a connecting rod small head, and the connecting rod big head and the connecting rod big head cover are respectively provided with external threads of the screw
  • the fastening connection assembly further comprises a rotation preventing sleeve and a limiting member;
  • the outer circumference of the locking nut is provided with a circumferentially evenly arranged, axial nut rotation preventing portion; and only one shaft is arranged on the rotation preventing sleeve a stop-stop hole,
  • a fastening connection assembly comprising a lock nut; further comprising a U-shaped threaded connection member and a rotation preventing sleeve;
  • the threaded connector comprises a U-shaped threaded connector body, and external threaded portions are provided at both ends of the threaded connector body, external threads
  • the outer diameter of the portion is smaller than the outer diameter of the threaded connector body; the external thread portion of each end corresponds to a lock nut and the rotation sleeve;
  • the outer circumference of the lock nut is provided with a circumferentially evenly arranged nut rotation stop portion, and the shaft center position is provided with a threaded hole that cooperates with the external thread portion; and only one axial rotation stop through hole is provided on the rotation sleeve, and the rotation is stopped.
  • the hole wall of the through hole is provided with a rotation preventing sleeve inner rotation portion matched with the nut rotation preventing portion; and an end surface of the rotation preventing sleeve is axially convexly provided with the restraining rotation preventing sleeve rotating toward the loosening direction of the lock nut
  • the sleeve rotation stop boss, the resisting position of the rotation sleeve of the rotation sleeve is in the circumferential direction and toward the loosening direction of the lock nut;
  • the external threaded portions at the two ends of the threaded connecting member are respectively screwed with the corresponding locking nut, and the rotation preventing portion of the rotation preventing sleeve of the rotation preventing sleeve is installed outside the nut rotation preventing portion of the lock nut, and the rotation preventing sleeve is axially restricted at The nut of the lock nut is outside the rotation stop portion; the nut rotation stop portion and the rotation stop portion of the rotation stop sleeve cooperate to restrain the rotation of the lock nut relative to the rotation sleeve.
  • a fastening connection structure comprising a fastening connection assembly of a twenty-sixth aspect, the fastening connection structure further comprising a connected piece;
  • the connected piece is provided with two through holes which cooperate with the threaded connecting piece, and are oriented on the connected piece
  • the surface of the rotation sleeve is provided with a rotation preventing hole that cooperates with the rotation preventing protrusion of the rotation sleeve;
  • the external thread portions of the two ends of the threaded connecting member are respectively threadedly connected with the lock nut through the corresponding through holes of the connected member, and are connected
  • the two through holes on the piece constrain the threaded connection member to rotate relative to the connected member, the threaded connector body axially resists the side of the connected member, the lock nut axially resists the other side of the connected member, the threaded connecting member and the lock nut Installed together with the connected member; the rotation preventing portion of the rotation preventing sleeve is installed outside the nut rotation
  • the invention is installed outside the lock nut by the rotation preventing sleeve, and the rotation preventing protrusion of the rotation sleeve is inserted into the rotation stop hole of the attachment body or the rotation stop hole of the gasket, and the rotation preventing projection of the rotation sleeve is in the direction of the loosening of the lock nut.
  • One side of the body stop hole or the washer rotation hole resists the rotation of the restraining sleeve relative to the body; the nut rotation stop and the rotation stop of the rotation sleeve cooperate with the constraint lock nut to rotate relative to the rotation sleeve; thus the screw,
  • the lock nut is non-rotatably mounted to the base body and the attachment body.
  • the screw and the lock nut cannot be rotated, and the threaded connection of the screw and the lock nut will not be loosened due to the rotation of the lock nut in the unscrewing direction, so that the screw and the lock nut are kept in the originally required locking position, the screw and the lock
  • the locking force of the threaded connection of the tightening nut is basically unchanged during use; even if the common screw and the lock nut are used to fasten the connection between the base body and the attached body, the screw and the lock nut are in a harsh environment such as severe vibration and high temperature.
  • the locking force of the threaded connection is basically unchanged during use; therefore, the best locking effect is achieved, and the threaded connection failure can be effectively avoided.
  • the height of the rotation preventing boss of the rotation preventing sleeve is greater than the axial length of the rotation preventing portion of the rotation preventing sleeve.
  • the lock nut should be loose and must be rotated in the unscrewing direction. Because the resisting position of the anti-rotation sleeve of the anti-rotation boss is close to the anti-rotation hole or the anti-rotation hole of the anti-rotation sleeve, or the contact with the anti-rotation hole of the attachment, the lock nut When rotating in the unscrewing direction, the rotation preventing boss of the rotation preventing sleeve is resisted by the attachment rotation preventing hole on the side facing the loosening direction of the lock nut, so even the gap between the rotation preventing projection and the attachment rotation preventing hole of the rotation preventing sleeve Cooperate, the anti-rotation sleeve can not be rotated in the direction of loosening or can only be rotated a little in the direction of loosening, and the anti-rotation boss of the rotating sleeve is resisted by the anti-rotation hole of the rotating body, and the locking sleeve cannot be rotated and the locking
  • the nut rotation preventing portion is evenly arranged outside the lock nut, so that the nut rotation preventing portion and the rotation preventing portion in the rotation preventing sleeve can be at least six or more, and the number of the rotation preventing portion in the rotation preventing sleeve
  • the structure of the rotation stop sleeve and the lock nut can be gear shape, spline shape or regular polygon, etc., thereby ensuring that the pre-tightening force of the thread connection meets the use requirement, and the locking effect is good. If the resisting position of the anti-rotation sleeve anti-rotation boss is close to the attachment rotation hole or the gasket rotation prevention hole, the rotation prevention effect is not so good.
  • the fastening connection assembly has a wide application range and is not limited by the hole distance of the hole for mounting the screw on the base body and the attachment body.
  • the fastening structure is more compact and more conformable to the installation and use habits of the common standard fasteners, and can be designed as standard parts.
  • the rotation sleeve is provided with a rotation preventing sleeve of the rotation preventing sleeve, and the auxiliary body is provided with a rotation preventing through hole, and the rotation preventing protrusion of the rotation preventing sleeve cooperates with the auxiliary rotation preventing hole to restrain the rotation of the rotation preventing sleeve
  • the body only needs to be processed or formed on the attached body to form an anti-rotation hole with the anti-rotation sleeve anti-rotation boss.
  • the anti-rotation hole of the attachment body is generally a round hole, and the processing cost is low.
  • the rotation stop is stopped by the rotation preventing washer, and the inserting portion is provided on the side of the rotation preventing washer facing away from the rotation preventing sleeve, and the embedded portion of the rotation preventing washer is embedded in the attachment body to restrain the rotation of the rotation preventing washer relative to the attached body, and does not need to be attached
  • the upper working hole is matched with the rotation preventing sleeve of the rotation preventing sleeve, and the rotation preventing structure for restraining the rotation of the rotating sleeve is not required on the attached body, and the rotation preventing washer can be made into a standard part, thereby greatly reducing the cost.
  • the rotation stop is stopped by the rotation preventing washer, and the gasket rotation preventing boss is arranged on the side of the rotation preventing washer facing away from the rotation preventing sleeve, and the gasket rotation preventing boss is inserted into the attachment rotation preventing hole and the opposite rotation preventing washer is oppositely attached.
  • Rotating, the rotation sleeve and the washer rotation preventing hole cooperate with the gasket rotation preventing hole to restrain the rotation of the rotation sleeve relative to the attachment body, and only need to process or form the attachment rotation hole with the gasket rotation protrusion boss on the attachment body,
  • the body stop hole is generally a round hole, and the processing cost is low.
  • the anti-rotation pad is used to stop the rotation, and the anti-rotation pad is fixed on the attached body to restrain the rotation of the anti-rotation pad relative to the attached body, and it is not necessary to process the hole matched with the anti-rotation sleeve anti-rotation boss on the attached body, There is no need for any anti-rotation structure that restrains the rotation of the rotation sleeve.
  • the anti-rotation gasket can be made into standard parts, thus greatly reducing the cost, and there is no restriction on the material of the attachment body, only the surface of the attachment body is flat, and the cost is special. Low, it will not destroy the surface of the attached body. When the fastening connection assembly is removed, the rotation preventing pad does not need to be separated from the attachment body.
  • the rotation sleeve of the rotation stop sleeve and the rotation stop hole of the attachment body or the rotation stop hole of the gasket cooperate with the rotation of the restraining rotation rotation pad to the opposite body, and it is not necessary to provide a rotation stop outer rotation portion on the outer circumference of the rotation prevention sleeve, and the rotation stop is not required.
  • the rotation preventing hole of the outer rotation preventing sleeve of the outer sleeve of the rotary sleeve is used to restrain the rotation of the rotation preventing sleeve relative to the attachment body; therefore, it is not necessary to process the rotation preventing hole with the rotation preventing sleeve on the attachment body, and it is not required to attach
  • the body is non-rotatably mounted together, and is provided with a rotation stop for the rotation preventing hole of the rotation preventing sleeve outer rotation portion, and it is not necessary to design two or more rotation preventing through holes on the rotation preventing sleeve to restrain the rotation preventing sleeve Rotate.
  • the processing cost is greatly reduced.
  • the rotation stop member is saved, the installation of the rotation stop member at the installation site is omitted, the installation time cost is saved, and the cost is greatly reduced.
  • the gap between the sleeve and the lock nut is generally a clearance fit, which facilitates the installation and removal of the sleeve. Since the anti-rotation sleeve is not installed in the anti-rotation hole and is completely exposed, the installation of the anti-rotation sleeve is convenient and fast; the disassembly of the anti-rotation sleeve can be easily disassembled without the aid of the disassembly tool, and the disassembly is convenient, fast and reliable.
  • the anti-rotation sleeve is provided with a resilient arm, and a limiting portion is arranged at the end of the elastic arm, and the limiting member is no longer required to limit the anti-rotation sleeve.
  • a resilient arm is arranged on the limiting member, and a limiting portion is arranged at the end of the elastic arm; the limiting member and the rotation preventing sleeve are installed together at the factory, and can be made into standard parts, which can be automated in the factory Work, so the installation efficiency is high.
  • the anti-rotation sleeve provided with the elastic arm and the fastening connection assembly including the limiting member provided with the elastic arm eliminate the need to install the limiting member at the installation site of the screw and the lock nut, so the installation is quick and the efficiency is high.
  • the mother body and the attached body are a one-piece structure, forming an annular body with a fracture.
  • the fastening structure of the mechanism is used for connecting other parts, since the screw and the lock nut are not opposed to the first mounting portion and the second mounting portion. Rotation, even in the environment where the fastening structure is subjected to a large force or the fastening structure is in a severe vibration, the screw connection will not be broken due to the rotation of the lock nut in the loosening direction, and the screw and the lock nut are reliably ensured.
  • the second mounting portion and the first mounting portion are mounted together.
  • crankshaft link mechanism using the fastening connection assembly of the present invention the link body and the connecting rod big cover fixed together by the fastening connection assembly, even if the lock nut does not rotate relative to the link body and the screw head cover,
  • the connecting rod body is subjected to a large force, or the crankshaft linkage mechanism is in a vibrating environment, and the threaded connection is not broken due to the rotation of the lock nut in the loosening direction, so that the connecting rod body and the connecting rod big head cover are reliably installed. Together, prevent accidents.
  • a rotation preventing hole is provided on the rotation preventing sleeve, and a rotation preventing boss which is matched with the rotation preventing hole of the rotation preventing sleeve is provided on the attachment body, which is a simple equivalent replacement of the present invention, and of course also belongs to the protection scope of the present invention.
  • the anti-rotation boss is disposed on the attached body, unless it is an injection molded part, a cast part, etc., and the anti-rotation boss is formed together when the attached body is formed. If the anti-rotation boss is processed, the cost is particularly high, so it is not in this patent. Again.
  • Embodiment 1 is a perspective exploded view of the fastening structure of Embodiment 1.
  • FIG. 2 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the second embodiment.
  • Fig. 3 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the second embodiment.
  • Embodiment 4 is a perspective exploded view of the fastening structure of Embodiment 2.
  • Fig. 5 is a perspective exploded view showing the fastening structure of the third embodiment.
  • Fig. 6 is a perspective view showing the fastening structure of the third embodiment.
  • Fig. 7 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the third embodiment.
  • Fig. 8 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the fourth embodiment.
  • FIG. 9 is a perspective exploded view of the fastening joint assembly of Embodiment 4.
  • FIG. 10 is a perspective exploded view of the fastening assembly of Embodiment 5.
  • FIG. 11 is a perspective exploded view of the limiting member and the rotation preventing sleeve of the embodiment 5.
  • Fig. 12 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the fifth embodiment.
  • Figure 13 is a perspective exploded view showing the fastening structure of the embodiment 6.
  • Figure 14 is a perspective exploded view of the lock nut and the rotation sleeve of Embodiment 6.
  • Fig. 15 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the sixth embodiment.
  • Figure 16 is a perspective exploded view of the lock nut and the rotation sleeve of the seventh embodiment.
  • Figure 17 is a perspective exploded view showing the fastening structure of the eighth embodiment.
  • Figure 18 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the eighth embodiment.
  • Fig. 19 is a perspective exploded perspective view showing the fastening structure of the ninth embodiment.
  • Figure 20 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the ninth embodiment.
  • Figure 21 is a perspective view showing the fastening structure of the embodiment 10.
  • Figure 22 is a perspective exploded view showing the fastening structure of the embodiment 10.
  • Figure 23 is a cross-sectional view showing the fastening joint structure of the embodiment 10 taken along the axial center of the screw.
  • Figure 24 is a perspective view showing the fastening structure of the eleventh embodiment.
  • Figure 25 is a perspective exploded view of the fastening assembly of the embodiment 11.
  • Figure 26 is a cross-sectional view showing the fastening joint structure of the embodiment 12 taken along the axial center of the screw.
  • Figure 27 is a perspective exploded view showing the fastening structure of the embodiment 12.
  • Figure 28 is a cross-sectional view showing the fastening joint structure of the embodiment 13 taken along the axial center of the screw.
  • Figure 29 is a perspective exploded view showing the fastening structure of the embodiment 13.
  • Figure 30 is a perspective exploded view showing the fastening structure of the embodiment 14.
  • Figure 31 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 14.
  • Figure 32 is a perspective exploded view showing the fastening structure of the fifteenth embodiment.
  • Figure 33 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the fifteenth embodiment.
  • Figure 34 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 16.
  • Figure 36 is a perspective exploded perspective view showing the fastening structure of the embodiment 16.
  • Figure 37 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 17.
  • Embodiment 38 is a perspective exploded view of the screw and the screw rotation preventing pad of Embodiment 17.
  • Figure 41 is a perspective exploded view of the fastening assembly of the embodiment 18.
  • Figure 42 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 18.
  • Figure 43 is a perspective exploded view of the fastening assembly of Embodiment 19.
  • Figure 44 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 19.
  • Fig. 45 is a perspective exploded view showing the lock nut and the rotation preventing sleeve of the embodiment 20;
  • Figure 46 is a cross-sectional view, taken along the axial center of the U-shaped threaded connection of the fastening structure of the embodiment 20.
  • Figure 47 is a perspective exploded view of the fastening joint assembly of Embodiment 21.
  • Figure 48 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the embodiment 21.
  • Fig. 49 is a partially enlarged schematic view showing the area A of Fig. 48;
  • Figure 50 is a perspective view of the anti-rotation sleeve and the elastic limiting member of Embodiment 22.
  • Figure 51 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the embodiment 22.
  • Figure 52 is a partially enlarged schematic view showing the area A of Figure 51.
  • Figure 53 is a perspective view showing the stopper of Embodiment 23.
  • Figure 54 is a perspective view showing the stopper of Embodiment 24.
  • Fig. 55 is a perspective exploded view showing the crankshaft link mechanism of the twenty-fifth embodiment.
  • Figure 56 is a schematic cross-sectional view showing the crankshaft link mechanism of Embodiment 25 taken along the axis of the two screws.
  • a fastening connection assembly includes a screw 1, a lock nut 2, a rotation preventing sleeve 3, and a limiting member, and the limiting member is a resisting nut 4.
  • the lock nut 2 has a stepped shape and includes a positive hexagonal clamping portion 5 and an outer gear-shaped rotation preventing portion 6, and the rotation preventing portion 6 projects radially from the clamping portion 5.
  • a clamping portion 5 is provided for facilitating the wrench to clamp the lock nut 2 when the lock nut 2 is attached and detached.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 6, and one triangular tooth forms a nut rotation preventing portion 7, and a threaded through hole 8 is provided at the axial center position.
  • the screw 1 includes an external thread portion 9 that cooperates with the threaded through hole 8 of the lock nut 2, a cylindrical light rod portion 10, and a right hexagonal head portion 11, and the head portion 11 projects axially toward the end surface of the light rod portion 10 to prevent rotation. Boss 12.
  • the rotation preventing sleeve 3 has an annular shape, and the axial center position of the rotation preventing sleeve 3 is provided with an axial internal gear-shaped rotation preventing through hole 13 that is gap-fitted with the rotation preventing portion 6 of the external gear shape, and the rotation preventing through hole 13 is A plurality of evenly circumferentially distributed triangular grooves are provided in the wall of the hole, and a single triangular groove on the wall of the hole of the stop through hole 13 forms a rotation preventing sleeve inner rotation portion 23 which cooperates with the nut rotation preventing portion 7.
  • a cylindrical anti-rotation boss 14 is axially projected on one end surface of the rotation preventing sleeve 3, and the abutting position of the rotation preventing boss 14 is in the circumferential direction and toward the screw unscrewing direction.
  • the resisting nut 4 is stepped, and the axial position of the resisting nut 4 is provided with a threaded through hole 21 that cooperates with the external threaded portion 9 of the screw 1, and communicates with the threaded through hole 21 to avoid the clamping portion of the lock nut 2
  • the fastening connection structure includes a fastening connection assembly, a base body 16, and an attachment body 17.
  • the attachment body 17 is provided with a through hole 18 which cooperates with the external thread portion 9 of the screw 1.
  • the side of the attachment body 17 facing away from the base body 16 is provided with a rotation preventing hole which is clearance-fitted with the rotation preventing boss 14 of the lock nut 2. twenty two.
  • the base body 16 is provided with a through hole 19 that engages with the polished rod portion 10 of the screw 1, and a circular rotation preventing hole 20 that is in clearance engagement with the rotation preventing boss 12 of the screw 1 is provided on the side of the parent body 16 facing away from the attachment body 17.
  • the externally threaded portion 9 of the screw 1 sequentially passes through the through hole 20 in the female body 16, the through hole 18 in the attached body 17, and the rotation preventing boss 12 of the screw 1 is inserted into the circular rotation preventing hole 20 of the female body 16, the screw 1 and the lock
  • the tightening nut 2 is screwed, the head 11 of the screw 1 axially abuts against the body 16, and the lock nut 2 axially abuts the appendage 17, and the screw 1 and the lock nut 2 fasten the base 16 and the appendage 17 together.
  • the rotation preventing boss 12 of the screw 1 is inserted into the circular rotation preventing hole 20 of the female body 16 to restrain the screw 1 from rotating relative to the female body 16.
  • the rotation preventing sleeve 3 is mounted outside the rotation preventing portion 6 of the lock nut 2, and the abutting position of the rotation preventing boss 14 is close to the rotation preventing hole 22 of the attachment body 17 or is in contact with the rotation preventing circular hole 22, and the nut of the triangular tooth is stopped.
  • the portion 7 is inserted into the rotation preventing sleeve 23 of the corresponding triangular groove, and the rotation preventing boss 14 of the rotation preventing sleeve 3 is inserted into the rotation preventing hole 22 of the attachment body 17, and the resisting nut 4 is installed outside the screw 1.
  • the clamping portion 5 of the screw 1 is placed in the hollow hole 15 of the resisting nut 4, and the resisting nut 4 is axially restrained from the side of the rotation preventing sleeve 3 facing away from the attachment body 17.
  • the rotation preventing boss 14 is resisted by the rotation preventing hole 22 of the attachment body 17 on the side facing the unscrewing direction of the lock nut 2, and the rotation preventing sleeve 3 is mounted outside the lock nut 2 to jointly restrain the rotation preventing sleeve 3 relative to the body 17
  • Rotating, the nut rotation preventing portion 7 and the rotation preventing sleeve inner rotation preventing portion 23 cooperate to restrain the rotation preventing sleeve 3 from rotating relative to the lock nut 2, and the mother body 16 and the attachment body 17 are not relatively rotated, so the screw 1 and the lock nut 2 are non-rotatably It is mounted with the parent body 16 and the appendage 17.
  • the stopper is a snap ring 31.
  • the snap ring includes an annular non-closed snap ring body, and three resisting protrusions are protruded radially inwardly on the inner side surface of the snap ring body, and the inner sides of the three resisting convex portions are distributed on the same circumference of the common body of the snap ring body On the surface.
  • the screw 32 includes a head portion 33 which is sequentially arranged, a cylindrical light rod portion 34, a male screw portion 35, a cylindrical mounting portion 36, and a circumferential locking groove 37 is provided in the mounting portion 36.
  • the clamping portion 39 of the lock nut 38 projects radially from the rotation stop portion 40.
  • the anti-rotation sleeve 41 is further provided with a cutout hole 43 which is coaxial with the anti-rotation through hole 42 and is used to avoid the clamping portion 39 of the lock nut 38.
  • the aperture of the cutout hole 43 is larger than the through-hole. The aperture of 42.
  • the fastening structure is different from that of the first embodiment in that the resisting projection of the snap ring 31 is axially restrained by the elastic deformation in the latching groove 37 of the mounting portion 36 of the screw 32 to the side of the anti-rotation sleeve 41 facing away from the attachment 44.
  • the clamping portion 39 of the lock nut 38 is placed in the cutout hole 43 of the rotation preventing sleeve 41.
  • the stopper is a snap ring 51.
  • the lock nut 52 is a hexagonal nut.
  • the six planes of the outer circumference of the lock nut 52 form a circumferentially arranged six nut rotation preventing portion 53.
  • the shaft center position is provided with a threaded through hole 54.
  • the outer circumference of the lock nut 52 is provided.
  • a card slot 55 that cooperates with the snap ring 51 in the circumferential direction.
  • the axial center of the rotation preventing sleeve 56 is provided with an axial rotation preventing through hole 57 that engages with the lock nut 52, and a rotation preventing projection 58 is axially projected on one end surface of the rotation preventing sleeve 56.
  • the hole wall of the through hole 57 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the through hole 57, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 59 that cooperates with the nut rotation preventing portion 53 of the lock nut 52.
  • the snap ring 51 includes a body of a non-closed annular snap ring 51.
  • the outer circumference of the snap ring body 63 is evenly distributed with six radially protruding limiting ribs 61.
  • the ends of the main body of the card slot 55 are provided with disassembly.
  • the limiting rib 61 radially protrudes from the outer circumference of the locking groove 55 on the locking nut 52.
  • the maximum outer diameter of the limiting rib 61 is larger than the maximum diameter of the locking through hole 57; the inner circumference of the snap ring body 63 and the locking
  • the outer circumference of the bottom of the slot 55 of the nut 52 is fitted.
  • the retaining sleeve 56 is mounted on the outside of the lock nut 52.
  • the snap ring body 63 is mounted in the latching groove 55 of the lock nut 52.
  • the limiting rib 61 of the snap ring 51 abuts against the side of the retaining sleeve 56 facing away from the attachment 62.
  • the end faces axially limit the side of the anti-rotation sleeve 56 away from the attachment 62.
  • the special pliers tool is used to extend into the two disassembling through holes 60, and then the snap ring 51 is opened outward, and the snap ring 51 can be removed from the slot 55 of the lock nut 52. come out.
  • a fastening connection assembly includes a screw 71 and a lock nut. 72, stop sleeve 73, no limit parts.
  • the clamping portion 74 of the lock nut 72 radially protrudes from the rotation preventing portion 75.
  • the rotation preventing sleeve 73 includes an annular rotation preventing sleeve body 86.
  • the center of the rotation preventing sleeve body 86 is provided with a central through hole 76, and three elastic arms 77 are evenly distributed on the wall of the central through hole 76.
  • Each of the resilient arms 77 includes a horizontal projection 78 formed radially inward from the bore wall of the central through bore 76, a U-shaped resilient arm 79 axially upwardly and then radially inwardly and axially downwardly formed; a U-shaped resilient arm The end portion of the 79 portion is formed inwardly inwardly in the stopper portion 80, and the inner surface of the three stopper portion 80 is provided with a plurality of uniform shapes of the inner gear that partially engages with the rotation preventing portion 75 of the outer shape of the lock nut 72.
  • a circumferentially arranged triangular groove, a single triangular groove on the inner side surface of the limiting portion 80 is formed into a rotation preventing sleeve inner rotation preventing portion 82 engaged with the nut rotation preventing portion 81, and a triangular shape on the inner side surface of the three limiting portions 80
  • the groove wall of the groove is enclosed to form a non-closed through hole 83.
  • a rotation preventing projection 84 is axially projected from the end surface of the rotation preventing sleeve 73 away from the U-shaped elastic arm 79.
  • the outer circumference of the rotation stop portion 75 and the nip portion 74 face the end surface facing the rotation stop portion 75 to form a stopper accommodation space for accommodating the stopper portion 80.
  • the fastening connection structure is different from that of the first embodiment in that the rotation preventing portion 75 of the lock nut 72 faces the attachment 85.
  • the U-shaped elastic arm 79 of the rotation preventing sleeve 73 is placed outside the rotation preventing portion 75 of the lock nut 72 by elastic deformation, and the rotation preventing boss 84 of the rotation preventing sleeve 73 is inserted into the rotation preventing hole of the attachment body 85, and the rotation preventing sleeve
  • the stopper portion 80 of the 73 is axially restrained by the grip portion 74 of the lock nut 72 toward the end surface of the rotation preventing portion 75 against the side of the rotation preventing sleeve 73 facing away from the attachment 85.
  • the lock nut 101 sequentially includes a clamping portion 102, a rotation preventing portion 103, and a cylindrical abutting portion 104.
  • the rotation preventing portion 103 radially protrudes from the clamping portion. 102 and the abutting portion 104 for avoiding the air.
  • the limiting member is a plastic member, and includes a ring-shaped limiting member body 105.
  • the outer peripheral shape of the limiting member body 105 is similar to the outer shape of the rotation preventing sleeve 106, and the inner diameter of the limiting member body 105 is slightly larger than the locking nut 101.
  • Three recesses 114 are formed in the central through hole 113 of the limiting body 105, and three elastic arms 107 are formed on the bottom surface of each of the recesses 114 in the axial direction and then axially on the same side.
  • a limiting portion 108 parallel to the limiting member body 105 is formed in the axial direction along the end portion of each of the elastic arms 107, and the limiting portion 108 radially protrudes from the hole wall of the central through hole 113.
  • Six limiting posts 109 are protruded from the same end surface of the limiting body 105, and a resisting ring 110 is provided at the end of the limiting post 109.
  • the limiting post 109 and the limiting portion 108 are placed on the same side of the limiting body 105.
  • the outer circumference of the abutting portion 104 and the rotation preventing portion 103 form a stopper receiving space for accommodating the stopper portion 108 toward the end surface of the abutting portion 104.
  • the anti-rotation sleeve 106 is a metal piece, and in the circumferential direction of the hole wall of the anti-rotation through hole of the anti-rotation sleeve 106, three cutout grooves 111 of the elastic arm 107 of the air-tight limiting member are uniformly arranged, and six of the anti-rotation sleeves 106 are provided on the anti-rotation sleeve 106.
  • a circumferentially distributed axial mounting hole 112 that cooperates with the limiting post 109 of the limiting member is provided with three cutouts 111 for taking out the limiting member on the outer circumference of the rotation preventing sleeve 106.
  • the minimum inner diameter of the three limiting portions 108 of the limiting member is smaller than the minimum inner diameter of the through-stopping hole.
  • the rotation preventing sleeve 106 is placed in the injection mold of the forming limit member, and the limiting member is injection molded, so that the limiting post 109 of the limiting member passes through the mounting hole 112 of the rotation preventing sleeve 106 and passes through the limiting column.
  • the resisting ring 110 of the 109 fixes the limiting member on the rotation preventing sleeve 106, and the elastic arm 107 is placed in the cutout groove 111 of the rotation preventing sleeve 106, and the limiting portion 108 radially protrudes from the rotation preventing through hole.
  • the rotation sleeve 106 is mounted outside the lock nut 101 together with the stopper member.
  • the rotation sleeve body 115 is mounted outside the rotation stop portion 103 of the lock nut 101, and the stopper portion 108 of the stopper member is elastically deformed by the elastic arm 107.
  • the rotation stop portion 103 is axially restrained toward the side of the abutment portion 104 facing away from the attachment body 114 toward the end surface of the abutment portion 104.
  • the outer circumference of the rotation preventing portion 122 of the lock nut 121 is provided with a plurality of trapezoidal teeth uniformly arranged in a circumferential direction, and one trapezoidal tooth forms a nut rotation preventing portion 123. .
  • the rotation sleeve 124 includes an annular rotation sleeve body 125.
  • the center of the rotation sleeve body 125 is provided with a central through hole 126, and the same circumference is extended along the outer circumference and the inner circumference of the rotation sleeve body 125.
  • the outer convex ring 127 and the inner convex ring 128 have three limiting portions 129 protruding inwardly along the top surface of the inner convex ring 128 on the inner convex ring 128, along the circumferential sides of each of the limiting portions 129, with the center
  • the center of the through hole 126 is provided with a radial straight groove 130 for cutting the inner convex ring 128 and partially cutting the rotation preventing sleeve body 125, and the inner convex ring 128 and the rotation preventing sleeve body 125 connected to the limiting portion 129.
  • a resilient arm 131 is formed.
  • the groove forms a rotation preventing sleeve inner rotation preventing portion 132 that engages with the nut rotation preventing portion 123.
  • the groove wall of the trapezoidal groove on the inner side surface of the three limiting portions 129 is closed to form a non-closed rotation preventing through hole 133.
  • a rotation preventing boss 134 is axially projected between a side of the rotation preventing sleeve body 125 facing the inner convex ring 128, the inner convex ring 128 and the outer convex ring 127.
  • the outer circumference of the abutting portion 135 and the rotation preventing portion 122 are formed toward the end surface facing the abutting portion 135 to form a stopper receiving space for accommodating the stopper portion 129.
  • the anti-rotation sleeve inner rotation preventing portion 132 of the rotation preventing sleeve 124 is disposed outside the rotation preventing portion 122 of the lock nut 121, and the elastic arm 131 of the rotation preventing sleeve 124 is placed outside the resisting portion 135 of the lock nut 121 by elastic deformation and stopped.
  • the rotation preventing boss 134 of the rotary sleeve 124 is inserted into the rotation preventing hole 137 of the attachment body 136, and the stopper portion 129 of the rotation preventing sleeve 124 is resisted by the rotation preventing portion 122 of the lock nut 121 toward the end surface of the resisting portion 135.
  • the sleeve 124 is axially offset from one side of the attachment 136.
  • the outer circumference of the rotation preventing portion 151 has a spline shape, and the outer circumference forms five projections, and each projection forms a nut rotation preventing portion 152.
  • the hole wall of the through hole 153 is a spline-shaped groove that engages with the spline-shaped outer circumference of the rotation preventing portion 151, and the single groove on the hole wall of the rotation preventing hole 153 forms a match with the nut rotation preventing portion 152.
  • the lock nut 171 is a standard outer hex nut.
  • the hole wall of the through hole 172 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the hole wall of the through hole 172, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 175 that cooperates with the nut rotation preventing portion 174 of the rotation preventing portion 173.
  • the outer circumference of the resisting nut 176 is a regular hexagon.
  • the axial position of the resisting nut 176 is provided with a threaded through hole 179 that engages with the externally threaded portion 178 of the screw 177, and communicates with the threaded through hole 179 to avoid the hollow hole 181 of the clamping portion 180 of the lock nut 171.
  • the aperture of the cutout 181 is larger than the aperture of the threaded hole.
  • the fastening connection structure includes a fastening connection assembly, a body of the unitary structure, and an attachment.
  • the parent body and the appendage form a fractured annular body 182; at both ends of the fracture of the annular body 182, a first mounting portion 183 and a second mounting portion 184 that face and are parallel are provided in the same direction.
  • the first mounting portion 183 is provided with a through hole 186 that cooperates with the polished rod portion 185 of the screw 177.
  • the side of the first mounting portion 183 facing away from the second mounting portion 184 is provided with a clearance fit with the anti-rotation boss 187 of the screw 177.
  • the round stop hole 188 is provided.
  • a through hole 189 is formed in the second mounting portion 184 to engage with the external thread portion 178 of the screw 177, and is disposed on the side of the second mounting portion 184 away from the first mounting portion 183 with the lock nut 171.
  • the rotary boss 190 has a clearance-fitted circular hole 191.
  • the external thread portion 178 of the screw 177 sequentially passes through the through hole 186 in the first mounting portion 183, the through hole 189 in the second mounting portion 184, and the rotation preventing boss 187 of the screw 177 is inserted into the circular rotation of the first mounting portion 183.
  • the screw 177 is screwed to the lock nut 171, the head of the screw 177 axially resists the first mounting portion 183, the lock nut 171 axially resists the second mounting portion 184, and the screw 177 and the lock nut 171 are A mounting portion 183 is fastened to the second mounting portion 184.
  • the rotation preventing boss 187 of the screw 177 is inserted into the circular rotation preventing hole 188 of the first mounting portion 183 to rotate the restraining screw 177 with respect to the first mounting portion 183.
  • the rotation preventing sleeve 192 is mounted outside the lock nut 171, the nut rotation preventing portion 174 of the triangular tooth is inserted into the rotation preventing sleeve 175 of the corresponding triangular groove, and the rotation preventing boss 190 of the rotation preventing sleeve 192 is inserted into the second rotation.
  • the resisting nut 176 is mounted on the external thread portion 178 of the screw 177, and the lock nut 171 is placed in the cutout hole 181 of the resisting nut 176, and the resisting nut 176 is opposed to the rotation preventing sleeve 192.
  • One side of the second mounting portion 184 is axially constrained.
  • the rotation preventing boss 190 of the rotation preventing sleeve 192 and the rotation preventing hole 191 of the second mounting portion 184 cooperate with the rotation preventing sleeve 192 to rotate relative to the second mounting portion 184, and the nut rotation preventing portion 174 and the rotation preventing sleeve inner rotation preventing portion 175
  • the first rotation preventing member 183 and the second mounting portion 184 are not rotated relative to each other, so that the screw 177 and the lock nut 171 are non-rotatably coupled to the first mounting portion 183 and the second mounting portion. 184 is installed together.
  • a fastening connection structure includes a fastening connection assembly, a base 201, and an attachment body 202.
  • the fastening connection assembly includes a screw 203, a lock nut 204, a rotation sleeve 205, an expansion sleeve 206 of a one-piece structure, and a resist nut 207.
  • the screw 203 includes a resisting portion 208, a polished rod portion 209, and a male thread portion 210 which are sequentially distributed.
  • the resisting portion 208 radially protrudes from the external thread portion 210, and the resisting portion 208 is provided with a driving taper surface 211 for driving the expansion sleeve 206 to expand.
  • the lock nut 204 is a standard outer hex nut, and the six planes of the outer circumference of the lock nut 204 form six nut rotation preventing portions 212 arranged circumferentially, and the threaded through holes 213 are provided at the axial center.
  • the rotation sleeve 205 is annular, and the axial center of the rotation sleeve 205 is provided with an axial rotation preventing through hole 214 that cooperates with the lock nut 204, and a rotation stop is axially protruded on one end surface of the rotation sleeve 205.
  • the boss 215 and the abutting position of the rotation preventing boss 215 are oriented in the circumferential direction toward the screw unscrewing direction.
  • the hole wall of the through hole 214 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the stop through hole 214, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves 11 form the anti-rotation sleeve inner rotation preventing portions 216 that cooperate with the nut rotation preventing portions 212 of the lock nut 204.
  • the outer circumference of the resisting nut 207 is a regular hexagon.
  • the axial position of the resisting nut 207 is provided with a threaded through hole 219 that engages with the externally threaded portion 210 of the screw 203, and communicates with the threaded through hole 219 to avoid the hollow hole 218 of the clamping portion 217 of the lock nut 204.
  • the aperture of the cutout 218 is larger than the aperture of the threaded aperture.
  • the expansion sleeve 206 has a circular tubular shape, and a slit 209 for expanding the expansion sleeve 206 when the expansion sleeve 206 is expanded is provided at the lower end of the expansion sleeve 206.
  • the attachment body 202 is provided with a through hole 210 that cooperates with the outer periphery of the expansion sleeve 206 and the abutting portion 208 of the screw 203.
  • a rotation preventing hole 211 is provided on the side of the attachment body 202 facing away from the base 201 in a clearance fit with the rotation preventing boss 215. .
  • the female body 201 is provided with a blind hole 212 that cooperates with the outer circumference of the expansion sleeve 206 and the abutting portion 208 of the screw 203.
  • the external thread portion 210 of the screw 203 passes through the expansion sleeve 206.
  • the resisting portion 208 of the screw 203 and the partial expansion sleeve 206 are mounted in the blind hole 212 of the female body 201.
  • the external thread portion 210 of the screw 203 passes through the through hole on the attachment body 202. 210 is threadedly connected to the threaded hole of the lock nut 204.
  • the driving cone surface 211 and the hole wall of the through hole on the expansion sleeve 206 are provided with one end of the slot 209 to expand the expansion sleeve 206, and the expansion between the expansion sleeve 206 and the base 201
  • the tightening force is used to fix the expansion sleeve 206 in the blind hole 212 of the female body 201.
  • the resisting portion 208 of the screw 203 is axially resisted by the expansion sleeve 206.
  • the lock nut 204 axially resists the attachment body 202, the screw 203, the expansion sleeve 206 and the lock.
  • the tightening nut 204 securely connects the parent body 201 and the appendage 202 together.
  • the rotation preventing sleeve 205 is installed outside the lock nut 204, and the resisting position of the rotation preventing boss 215 is close to the rotation preventing hole 211 of the attachment body 202 or is in contact with the rotation preventing hole 211, and the rotation preventing sleeve of the rotation preventing sleeve 205 is stopped.
  • the portion 216 is disposed outside the nut rotation preventing portion 212 of the lock nut 204 and the rotation preventing boss 215 of the rotation preventing sleeve 205 is inserted into the rotation preventing hole 211 of the attachment body 202.
  • the resisting nut 207 is mounted on the external thread portion 210 of the screw 203.
  • the lock nut 204 protruding from the anti-rotation sleeve 205 is placed in the hollow hole 218 of the resisting nut 207, and the resisting nut 207 is axially restrained from the side of the anti-rotation sleeve 205 facing away from the attachment body 202.
  • the rotation preventing sleeve inner rotation preventing portion 216 and the nut rotation preventing portion 212 cooperate with the restriction lock nut 204 to rotate relative to the rotation preventing sleeve 205, and the rotation preventing projection 215 is attached to the side of the locking nut 204 by the attachment body 202.
  • the round hole 211 is resisted, and the rotation sleeve 205 is mounted outside the lock nut 204 to jointly restrain the rotation of the rotation sleeve 205 relative to the attachment body 202.
  • the lock nut 204 is non-rotatably mounted with the screw 203, the expansion sleeve 206, the base 201, and the appendage 202.
  • a fastening connection assembly includes a screw 231, a lock nut 232, and a rotation preventing sleeve 233.
  • the lock nut 232 has a stepped shape and includes a positive hexagonal clamping portion 234 and an outer gear-shaped rotation preventing portion 235.
  • the rotation preventing portion 235 radially protrudes from the clamping portion 234.
  • a clamping portion 234 is provided to facilitate the clamping of the locking nut 232 by the wrench when the locking nut 232 is attached and detached.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 235, and one triangular tooth forms a nut rotation preventing portion 236, and a threaded through hole 238 is provided at the axial center position.
  • the screw 231 includes an external thread portion 239 that cooperates with the threaded through hole 238 of the lock nut 232 and a right hexagonal head portion 241 that protrudes axially toward the end surface of the external thread portion 239 by a rotation preventing boss 242.
  • the rotation preventing sleeve 233 has an annular shape, and the axial center position of the rotation preventing sleeve 233 is provided with an axial rotation preventing through hole 243 which is engaged with the lock nut 232, and an axial projection is formed on one end surface of the rotation preventing sleeve 233.
  • the turning boss 244 has a resisting position of the rotation preventing boss 244 in the circumferential direction and toward the screw unscrewing direction.
  • the hole wall of the through hole 243 is an inner gear shape that cooperates with the outer gear shape of the lock nut 235 of the lock nut 232.
  • the hole wall of the rotation stop hole 243 is provided with a plurality of uniform circumferential juxtaposed triangular grooves.
  • a single triangular groove on the wall of the hole of the through hole 243 forms a rotation preventing sleeve inner rotation portion 237 which cooperates with the nut rotation preventing portion 236.
  • the hole wall of the rotation preventing sleeve 233 is uniformly distributed in three semicircles for accommodating The glue tank 246 of the fixing glue 245.
  • the fastening connection structure includes a fastening connection assembly, a base 248, and an attachment 247.
  • the attachment body 247 is provided with a through hole 251 that cooperates with the external thread portion 239 of the screw 231.
  • a rotation preventing hole 252 that is in clearance engagement with the rotation preventing boss 244 is provided.
  • the base 248 is provided with a through hole 250 that cooperates with the external thread portion 239 of the screw 231.
  • a side of the base 248 facing away from the attachment 247 is provided with a circular rotation hole 249 that is in clearance with the rotation preventing boss 242.
  • the external thread portion 239 of the screw 231 sequentially passes through the through hole 250 in the female body 248, the through hole 251 in the attached body 247, and the rotation preventing boss 242 of the screw 231 is inserted into the circular rotation preventing hole 249 of the female body 248, the screw 231 and the lock
  • the nut 232 is screwed.
  • the head 241 of the screw 231 axially resists the base 248.
  • the lock nut 232 axially resists the attachment 247.
  • the screw 231 and the lock nut 232 fasten the base 248 and the attachment 247 together.
  • the rotation preventing boss 242 of the screw 231 is inserted into the circular rotation preventing hole 249 of the female body 248 to restrain the screw 231 from rotating relative to the female body 248.
  • the rotation preventing sleeve 233 is installed outside the lock nut 232, and the resisting position of the rotation preventing boss 244 is close to the rotation preventing hole 252 of the attachment body 247 or is in contact with the rotation preventing hole 252, and the rotation preventing sleeve of the rotation preventing sleeve 233 is stopped.
  • the portion 237 is disposed outside the nut rotation preventing portion 236 of the lock nut 232 and the rotation preventing boss 244 of the rotation preventing sleeve 233 is inserted into the rotation preventing hole 252 of the attachment body 247, and the nut adjacent to the glue groove 246 in the glue groove 246.
  • the fixing glue 245 is filled between the gap of the rotation preventing portion 236 and the rotation preventing portion 237 of the rotation preventing sleeve, and the fixing rubber 245 fixes the rotation preventing sleeve 233 to the outside of the locking nut 232 to axially limit the rotation preventing sleeve 233.
  • the rotation preventing boss 244 is resisted by the rotation preventing hole 252 of the attachment body 247 on the side facing the unscrewing direction of the lock nut 232, and the rotation preventing sleeve 233 is mounted outside the lock nut 232 to jointly restrain the rotation preventing sleeve 233 with respect to the attached body 247.
  • Rotating, the nut rotation preventing portion 236 and the rotation preventing sleeve inner rotation preventing portion 237 cooperate with the rotation preventing sleeve 233 to rotate relative to the locking nut 232, and the mother body 248 and the attachment body 247 are not relatively rotated, so the screw 231 and the lock nut 232 are non-rotatably It is mounted with the parent body 248 and the appendage 247.
  • the screw 300 includes a head portion 301, a cylindrical optical rod portion 302, and a male screw portion 303 which are sequentially arranged.
  • the lock nut 304 includes a clamping portion 305, a rotation preventing portion 306, and a cylindrical mounting portion 307 which are sequentially arranged.
  • the rotation preventing portion 306 radially protrudes from the mounting portion 307, and the clamping portion 305 radially protrudes from the rotation preventing portion 306.
  • a card slot 308 is provided on the mounting portion 307 in the circumferential direction.
  • the fastening structure is different from that of the first embodiment in that the resisting projection 310 of the snap ring 309 is elastically deformed into the slot 308 of the mounting portion 307 of the lock nut 304 to the side of the rotation preventing sleeve 311 facing away from the attachment 312. Axial limit.
  • the fastening joint assembly further includes a screw rotation preventing piece 330.
  • the screw 331 includes a stopper portion 332 that is sequentially arranged, an abutment rotation preventing portion 333 whose outer circumference is an external gear shape, a polished rod portion 334, and a male screw portion 335.
  • the limiting portion 332 radially protrudes against the rotation preventing portion 333, and the resisting rotation portion 333 radially protrudes from the polished rod portion 334.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the resisting rotation preventing portion 333, and one triangular tooth forms a screw rotation preventing portion 336.
  • the screw rotation preventing piece 330 is a square having rounded corners, and the center position of the screw rotation preventing piece 330 is provided with an inner gear-shaped gasket rotation preventing through hole 337 which is engaged with the outer gear-shaped abutting rotation preventing portion 333 of the screw 331, and the pad
  • a plurality of evenly circumferentially distributed triangular grooves are formed in the wall of the hole-stopping hole 337, and a pointed-shaped embedded edge 344 is protruded from the bottom surface of the spacer on opposite sides of the screw-stopping piece 330. This method is not good enough).
  • a single triangular groove on the wall of the gasket stop through hole 337 forms a gasket stop portion 338 that cooperates with the screw stop portion 336.
  • the external thread portion 335 of the screw 331 sequentially passes through the gasket rotation preventing through hole 337 of the screw rotation preventing piece 330, the through hole 340 of the female body 339, and the through hole 342 of the attachment body 341 to be screwed with the lock nut 343, and the screw 331
  • the resisting rotation preventing portion 333 is disposed in the gasket rotation preventing through hole 337 of the screw rotation preventing piece 330, and the limiting portion 332 of the screw 331 abuts against the screw rotation preventing piece 330 toward the end surface of the resisting rotation preventing portion 333, and the screw rotation preventing piece 330
  • the inserting edge 344 is embedded in the mother body 339 and generates a static friction constraint.
  • the screw rotation preventing piece 330 is rotated relative to the mother body 339.
  • the screw rotation preventing portion 336 of the triangular tooth is inserted into the triangular groove.
  • the rotation preventing portion 338 of the triangular groove supports the rotation of the screw 331 with respect to the mother body 339. It is rotatably mounted with the mother body 339.
  • the fastening connection assembly further includes a rotation preventing pad 360.
  • the axial center position of the rotation preventing pad 360 is provided with a circular center through hole 363 which is in clearance with the external thread portion 362 of the screw 361.
  • the end surface of the rotation preventing pad 360 is provided with a clearance fit with the rotation preventing boss 365 of the rotation preventing sleeve 364.
  • the shim rounds the through hole 366.
  • a rotation preventing pad boss 367 is axially projected on the outer peripheral end surface of the circular center through hole 363.
  • the maximum outer diameter of the anti-rotation pad 360 is greater than the maximum inner diameter of the anti-rotation through hole 368 of the anti-rotation sleeve 364.
  • the side of the attachment body 369 facing away from the mother body 370 is provided with a rotation preventing hole 371 which is in clearance fit with the rotation preventing pad boss 367 of the rotation preventing pad 360.
  • the external thread portion 362 of the screw 361 sequentially passes through the through hole 372 of the female body 370, the through hole 373 of the attachment body 369, the circular center through hole 363 of the rotation preventing pad 360, and the rotation preventing boss 374 of the screw 361 is inserted into the female body 370.
  • the rotation preventing pad boss 367 of the rotation preventing pad 360 is inserted into the rotation preventing hole 371 of the attachment body 369, and the screw 361 is screwed with the lock nut 376 to connect the mother body 370, the attachment body 369 and the rotation stop.
  • Pads 360 are mounted together.
  • the rotation preventing pad boss 367 of the rotation preventing pad 360 and the rotation preventing hole 371 of the attachment body 369 cooperate with the restraining rotation preventing pad 360 to rotate relative to the attachment body 369.
  • the rotation preventing sleeve 364 is mounted outside the lock nut 376, and the rotation preventing boss 365 of the rotation preventing sleeve 364 is inserted into the gasket rounding through hole 366 of the rotation preventing sleeve 360, and the rotation preventing boss 365 of the rotation preventing sleeve 364 is stopped.
  • the washer round stop through hole 366 of the rotary pad 360 cooperates with the restraining rotation sleeve 364 to rotate relative to the rotation stop pad 360.
  • a fastening connection assembly includes a screw 461, a rotation preventing pad 462, a lock nut 463, and a rotation preventing sleeve 464.
  • the screw 461 includes an externally threaded portion 466 that mates with the threaded through hole 465 of the lock nut 463, and a right hexagonal head portion 484 that projects axially toward the end surface of the externally threaded portion 466 by a rotation preventing boss 467.
  • the lock nut 463 has a stepped shape and includes a positive hexagonal clamping portion 468 and an outer gear-shaped rotation preventing portion 469.
  • the axial center position is provided with a threaded through hole 465 that cooperates with the externally threaded portion 466, and the rotation preventing portion 469 is radially convex.
  • the clamping portion 468 is taken out.
  • a clamping portion 468 is provided to facilitate the clamping of the locking nut 463 by the wrench when the locking nut 463 is installed and removed.
  • a plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 469, and one triangular tooth forms a nut rotation preventing portion 470.
  • the rotation preventing pad 462 is a circular plate-shaped stamping member, and the shaft center is provided with a through hole 471 that cooperates with the external thread portion 466 of the screw 461.
  • the maximum inner diameter of the through hole 471 is smaller than the maximum outer diameter of the lock nut 463, and the rotation preventing pad
  • the end surface of the 462 is provided with a gasket stop through hole 472 which is matched with the rotation preventing boss 475 of the rotation preventing sleeve 464.
  • the rotation preventing pad 462 uniformly distributes a plurality of stamped embedded teeth toward the one side of the through hole 471. 473, the embedded tooth 473 is wedge-shaped.
  • the rotation sleeve 464 is annular, and the axial position of the rotation sleeve 464 is provided with an axial rotation preventing through hole 474 which cooperates with the lock nut 463, and an axial projection on one end surface of the rotation sleeve 464
  • the turning boss 475 has a resisting position of the rotation preventing boss 475 in the circumferential direction and toward the screw unscrewing direction.
  • the hole wall of the through hole 474 is an inner gear shape that cooperates with the outer gear shape of the lock nut 469 of the lock nut 463.
  • the hole wall of the stop through hole 474 is provided with a plurality of uniform circumferential juxtaposed triangular grooves.
  • a single triangular groove on the wall of the hole of the through hole 474 forms a rotation preventing inner rotation portion 476 which cooperates with the nut rotation preventing portion 470.
  • the hole wall of the rotation preventing sleeve 464 is uniformly distributed in three semicircles for accommodating The glue tank 478 of the fixing glue 477.
  • the fastening connection structure includes a fastening connection assembly, a mother body 479, and an attachment body 480.
  • the attachment body 480 is provided with a through hole 481 that cooperates with the external thread portion 466 of the screw 461.
  • the hardness of the attachment body 480 is smaller than the hardness of the insertion tooth 473 of the rotation preventing pad 462.
  • the base body 479 is provided with a through hole 482 that cooperates with the external thread portion 466 of the screw 461.
  • a circular rotation preventing hole 483 that is in clearance with the rotation preventing boss 467 is provided.
  • the external thread portion 466 of the screw 461 sequentially passes through the through hole 482 on the female body 479, the through hole 481 on the attached body 480, and the through hole 471 of the rotation preventing pad 462 are screwed with the lock nut 463, and the rotation preventing boss of the screw 461 467 is inserted into the circular rotation hole 483 of the female body 479.
  • the screw 461 is non-rotatably mounted on the female body 479.
  • the lock nut 463 axially abuts the rotation preventing pad 462, and the embedded tooth 473 of the rotation preventing pad 462 is embedded in the attachment body 480.
  • the rotating pad 462 is rotated relative to the attached body 480, and the screw 461 and the lock nut 463 fasten the female body 479, the appendage 480 and the anti-rotation pad 462 together.
  • the rotation preventing sleeve 464 is installed outside the lock nut 463, and the resisting position of the rotation preventing boss 475 is close to or in contact with the gasket rotation preventing through hole 472, and the nut rotation preventing portion 470 of the triangular tooth is inserted correspondingly.
  • the rotation preventing boss 475 of the rotation preventing sleeve 464 is inserted into the gasket rotation preventing through hole 472, and the nut rotation preventing portion 470 adjacent to the rubber tank 478 in the rubber tank 478.
  • a fixing glue 477 is filled between the gaps of the rotation preventing portion 476 of the rotation preventing sleeve, and the fixing rubber 477 fixes the rotation preventing sleeve 464 to the outside of the locking nut 463 to axially limit the rotation preventing sleeve 464.
  • the rotation preventing boss 475 is resisted by the gasket rotation preventing through hole 472 on the side facing the unscrewing direction of the rotation preventing pad 462, and the rotation preventing sleeve 464 is installed outside the locking nut 463 to jointly restrain the rotation preventing sleeve 464 from rotating relative to the rotation preventing pad 462.
  • the nut rotation preventing portion 470 cooperates with the rotation preventing sleeve inner rotation preventing portion 476 to rotate the restraining rotation sleeve 464 relative to the locking nut 463, and the mother body 479 and the attachment body 480 are not relatively rotated, so the screw 461 and the lock nut 463 are non-rotatably coupled with The parent body 479 and the appendage 480 are mounted together.
  • the holding portion 502 of the lock nut 501 protrudes radially from the rotation preventing portion 503.
  • the anti-rotation sleeve 504 includes an annular anti-rotation sleeve body 505.
  • the central through-hole 506 is disposed at the axial center of the anti-rotation sleeve body 505, and three elastic arms 507 are evenly distributed on the wall of the central through-hole 506.
  • Each of the resilient arms 507 includes a horizontal projection 508 formed radially inward from the bore wall of the central through bore 506, a U-shaped resilient arm 509 axially upwardly and then radially inwardly and axially downwardly formed, from the U-shaped resilient arm
  • the end portion of the 509 is formed with the stopper portion 510 radially inwardly, and the inner surface of the three stopper portions 510 is provided with a plurality of uniform shapes of the internal gear that partially engages with the rotation preventing portion 503 of the outer shape of the lock nut 501.
  • a circumferentially arranged triangular groove a single triangular groove on the inner side surface of the limiting portion 510 is formed into a rotation preventing sleeve inner rotation preventing portion 512 engaged with the nut rotation preventing portion 511, and a triangular shape on the inner side surface of the three limiting portions 510
  • the groove wall of the groove is enclosed to form a non-closed through hole 513.
  • a rotation preventing boss 514 is axially projected from the end surface of the rotation preventing sleeve 504 away from the U-shaped elastic arm 509.
  • the fastening connection structure is different from that of the first embodiment in that the rotation preventing portion 503 of the lock nut 501 faces the attachment body 515.
  • the U-shaped elastic arm 509 of the rotation preventing sleeve 504 is placed outside the rotation preventing portion 503 of the lock nut 501 by elastic deformation, and the rotation preventing boss 514 of the rotation preventing sleeve 504 is inserted into the gasket rotation preventing through hole 516 of the rotation preventing pad 515.
  • the limiting portion 510 of the rotation preventing sleeve 504 is axially restrained by the clamping portion 502 of the locking nut 501 toward the end surface of the attachment body 515 against the side of the rotation preventing sleeve 504 facing away from the attachment body 515.
  • both end faces of the screw rotation preventing pad 521 are smooth faces, and friction particles or embedding projections for increasing friction are not provided.
  • the lock nut 522 includes an outer hexagonal clamping portion 523, a rotation preventing abutting portion 524, and a positioning portion 525.
  • the rotation preventing abutting portion 524 includes a rotation preventing portion 526 connected to the clamping portion 523 and is connected to the positioning portion 525.
  • the damper portion 527 is vacant, and the urging portion 527 radially protrudes from the positioning portion 525.
  • the rotation preventing portion 526 radially protrudes from the dam portion 527 and the nip portion 523.
  • a plurality of evenly circumferentially arranged trapezoidal teeth are provided on the outer circumference of the rotation preventing portion 526 of the lock nut 522, and one trapezoidal tooth forms a nut rotation preventing portion 528.
  • the rotation preventing sleeve 529 includes an annular rotation preventing sleeve body 530.
  • the central through hole 531 is disposed at the axial center of the rotation preventing sleeve body 530, and the same height is extended along the outer circumference and the inner circumference of the rotation preventing sleeve body 530.
  • the outer convex ring 532 and the inner convex ring 533 have three limiting portions 534 protruding radially on the inner convex ring 533 along the top surface of the inner convex ring 533, along the circumferential sides of each limiting portion 534, with the center
  • the center of the through hole 531 is provided with a radial straight groove 535 which cuts the inner convex ring 533 and partially cuts the rotation preventing sleeve body 530, and the inner convex ring 533 and the rotation preventing sleeve body 530 which are connected to the limiting portion 534.
  • a resilient arm 536 is formed.
  • a plurality of axially trapezoidal grooves of a uniform circumferential shape in a shape of an internal gear that partially engages with the rotation preventing portion 526 of the outer shape of the lock nut 522 are provided, and the inside of the limiting portion 534 is provided.
  • the trapezoidal groove on the side surface forms a rotation preventing sleeve inner rotation preventing portion 537 that engages with the nut rotation preventing portion 528, and the groove wall of the trapezoidal groove on the inner side surface of the inner convex ring 533 is closed to form a non-closed rotation preventing through hole 553.
  • a rotation preventing boss 539 is axially projected between a side of the rotation preventing sleeve body 530 facing the inner convex ring 533, an inner convex ring 533 and an outer convex ring 532.
  • the center of the rotation preventing pad 540 is provided with a circular center through hole 541 which is in clearance with the positioning portion 525 of the lock nut 522.
  • the end surface of the rotation preventing pad 540 is provided with a clearance fit with the rotation preventing boss 539 of the rotation preventing sleeve 529.
  • the shim rounds the through hole 542.
  • Both end faces of the rotation preventing pad 540 are smooth faces, and there are no friction particles or embedded protrusions for increasing friction.
  • One end surface of the screw rotation preventing pad 521 is coated with glue, and the external thread portion 544 of the screw 543 protrudes from the end surface of the screw rotation preventing pad 521 which is not coated with the rubber into the circular center through hole 545 of the screw rotation preventing pad 521, and the rotation preventing convex portion
  • the table 552 extends into the rotary screw circular through hole 546 of the screw rotation preventing pad 521, and the screw rotation preventing pad 521 is sleeved on the screw 543; the end surface of the rotation preventing pad 540 is coated with glue, and the external thread portion 544 of the screw 543 is attached.
  • the through hole 549 on the mother body 548, the through hole 551 in the appendage 550, the circular center through hole 541 and the lock nut 522 thread passing through the anti-rotation pad 540 from the end face of the anti-rotation pad 540 without the glue.
  • the connection, the lock nut 522 and the screw 543 securely connect the screw rotation preventing pad 521, the female body 548, and the attachment body 550 and the rotation preventing pad 540.
  • the surface of the rotating pad 540 is adhered to the surface of the appendage 550, and a large adhesive force is generated on the surface of the appendage 550 to restrict the rotation of the anti-rotation pad 540 relative to the appendage 550.
  • the rotating pad 521 is bonded to the surface of the mother body 548, and has a large adhesive force with the surface of the mother body 548 to restrain the rotation of the screw rotation preventing pad 521 relative to the mother body 548.
  • the rotation preventing protrusion 552 extends into the rotation preventing screw of the screw rotation preventing pad 521.
  • the circular through hole 546 restrains the screw 543 from rotating relative to the screw rotation preventing pad 521, and the screw 543, the screw rotation preventing pad 521, and the rotation preventing pad 540 are both non-rotatable with respect to the parent body 548 and the attachment body 550.
  • the rotation preventing sleeve 529 is placed outside the rotation preventing portion 526 of the lock nut 522, and the elastic arm 536 of the rotation preventing sleeve 529 is elastically deformed so that the limiting portion 534 of the elastic arm 536 is placed outside the resisting portion 527 of the lock nut 522.
  • the rotation preventing boss 539 of the rotary sleeve 529 is inserted into the spacer circular rotation through hole 542 of the rotation preventing pad 540, and the stopper portion 534 of the rotation preventing sleeve 529 is directed toward the end surface of the attachment body 550 by the rotation preventing portion 526 of the lock nut 522.
  • the axial stop of the side of the anti-rotation sleeve 529 away from the attachment 550 is resisted.
  • the fastening joint assembly further includes a screw rotation preventing pad 601.
  • the screw rotation preventing pad 601 is a circular plate-shaped stamping member, and the shaft center is provided with a through hole 615 that cooperates with the external thread portion 603 of the screw 602.
  • One end surface of the screw rotation preventing pad 601 is provided with a rotation preventing convexity with the screw 602.
  • the table 604 is a clearance-fitted through-hole 605.
  • the screw-stopping pad 601 circumferentially distributes a plurality of stamped embedded teeth 606 along the periphery of the through-hole 615.
  • the embedded teeth 606 are wedge-shaped.
  • the external thread portion 603 of the screw 602 passes through the through hole 615 of the screw rotation preventing pad 601 from the side of the screw rotation preventing pad 601 facing away from the fitting tooth 606, and the rotation preventing boss 604 of the screw 602 is inserted into the circular rotation of the screw rotation preventing pad 601.
  • the through hole 605 the through hole 608 on the base 607, the through hole 610 on the attached body 609, and the through hole 612 of the rotation preventing pad 611 are screwed with the lock nut 613 at the screw 602 and the lock nut 613.
  • the inserting teeth 606 of the screw rotation preventing pad 601 are embedded in the mother body 607, and the locking nut 613 axially resists the rotation preventing pad 611.
  • the head 614 of the screw 602 axially resists the screw rotation preventing pad 601, and the screw rotation preventing pad 601
  • the inserting tooth 606 is embedded in the female body 607 to restrain the screw rotation preventing pad 601 from rotating relative to the mother body 607.
  • the rotation preventing boss 604 of the screw 602 is inserted into the circular rotation preventing hole 605 of the screw rotation preventing pad 601 to constrain the screw 602 with respect to the screw rotation preventing pad 601. Rotating, the screw 602 and the lock nut 613 securely couple the parent body 607, the attachment body 609 and the screw rotation preventing pad 601 together, and the screw 602 is non-rotatably mounted with the mother body 607.
  • the anti-rotation pad 700 is a square with rounded corners and is not provided with an embedded tooth, and the anti-rotation pad 700 has elasticity, on opposite sides of the anti-rotation pad 700. Curved to the same side to form a pointed embedded edge 701.
  • One end of the rotation preventing portion 703 of the lock nut 702 abuts against the rotation preventing pad 700.
  • the insertion edge 701 of the rotation preventing pad 700 is inserted into the female body 704 and generates a static frictional restraining rotation preventing pad 700 to rotate relative to the mother body 704.
  • the rotation preventing pad 700 is non-rotatably mounted on the rotation preventing pad 700. Attached to the body 705.
  • the fastening connection assembly further includes a limiting member 720.
  • the lock nut 721 includes a clamping portion 722, a rotation preventing portion 723, and a resisting portion 724 in this order.
  • the rotation preventing portion 723 radially protrudes from the clamping portion 722 and the abutting portion 724 for avoiding the air.
  • the limiting member 720 is a plastic member, and includes a ring-shaped limiting member body 725.
  • the outer peripheral shape of the limiting member body 725 is similar to the outer shape of the rotation preventing sleeve 726, and the inner diameter of the limiting member body 725 is slightly larger than the locking nut.
  • the outer diameter of the rotation preventing portion 723 of the 721, the limiting member body 725 protrudes radially inwardly along the inner circular axis to three evenly distributed elastic buckles 727, and the resisting portion 728 of each elastic buckle 727 faces the limit.
  • six limiting posts 729 protrude from the end faces of the limiting body 725 and the elastic buckle 727, and a resisting ring 730 is disposed at the end of the limiting post 729.
  • the anti-rotation sleeve 726 is a metal member, and includes an annular anti-rotation sleeve body 732 having a rotation-stopping hole 731 in the center, and three elastic cards of the air-tight limiting member 720 are uniformly distributed in the circumferential direction of the hole wall of the anti-rotation through hole 731.
  • the escape groove 733 of the buckle 727 has a rotation preventing sleeve inner rotation preventing portion 734 in which the corner preventing teeth are uniformly arranged at the position where the through hole 731 is not provided with the cutout groove 733, and the rotation preventing sleeve 726 is provided with six circumferences.
  • the mounting hole 735 of the distributed axial direction of the limiting post 729 of the limiting member 720 is provided with three clamping grooves 736 for taking out the limiting member 720 on the outer circumference of the rotation preventing sleeve 726.
  • the finished rotation sleeve 726 is placed in the injection mold of the molding limit member 720, and the stopper 720 is injection molded.
  • the limiting post 729 of the limiting member 720 passes through the mounting hole 735 of the rotation preventing sleeve 726, and the limiting member 720 is fixed on the rotation preventing sleeve 726 through the resisting ring 730 of the limiting post 729, and the elastic buckle 727 is placed at the rotation stop
  • the sleeve 726 is in the cutout 733.
  • the outer circumference of the rotation preventing pad 737 includes two circular arc surfaces that are symmetric about the central axis, and two parallel planes that connect the two circular arc surfaces.
  • the embedded side 739 of the rotation preventing pad 737 has two circular arc sides.
  • the rotation sleeve 726 is mounted outside the lock nut 721 together with the stopper 720.
  • the rotation sleeve body 732 is mounted outside the rotation preventing portion 723 of the lock nut 721, and the elastic buckle 727 of the stopper 720 is stopped by elastic deformation.
  • the end portion of the rotating portion 723 facing the resisting portion 724 is axially restrained from the side of the rotation preventing sleeve 726 that faces away from the attachment 740.
  • a fastening connection structure includes a fastening connection assembly and a connected member 1031.
  • the fastening connection assembly comprises a U-shaped threaded connection 1032, two identically configured lock nuts 1033, two identically configured rotation sleeves 1034, and two identically configured resisting nuts 1035.
  • the threaded connector 1032 includes a U-shaped threaded connector body 1036. Both ends of the threaded connector body 1036 are provided with external threaded portions 1037. The outer diameter of the externally threaded portion 1037 is smaller than the outer diameter of the threaded connector body 1036. The threaded portions 1037 are parallel to each other and are perpendicular to the corresponding end faces of the threaded connector body 1036.
  • the lock nut 1033 is a hexagonal nut.
  • the six planes of the outer circumference of the lock nut 1033 form six nut-rotation portions 1038 arranged circumferentially, and a threaded through hole 1039 is provided at the axial center.
  • the axial center position of the rotation preventing sleeve 1034 is provided with an axial rotation preventing through hole 1040 that cooperates with the lock nut 1033, and an anti-rotation boss 1041 is axially protruded on one end surface of the rotation preventing sleeve 1034, and the rotation preventing boss
  • the resisting position of 1041 is in the circumferential direction, toward the screw unscrewing direction.
  • the hole wall of the through hole 1040 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the through hole 1040, and each of the pointed grooves is formed by
  • the two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 1042 that cooperates with the nut rotation preventing portion 1038 of the lock nut 1033.
  • the axial position of the resisting nut 1035 is provided with a threaded through hole 1046, and the threaded through hole 1046 is connected to the hollow hole 1043 of the hollow lock nut 1033.
  • the connecting member 1031 is provided with two through holes 1044 which cooperate with the external threaded portion 1037 of the threaded connecting member 1032.
  • the axial distance between the two through holes 1044 is equal to the axial distance of the two externally threaded portions 1037, and is connected.
  • a side of the piece 1031 facing the rotation preventing sleeve 1034 is provided with a rotation preventing hole 1045 which is in clearance with the rotation preventing boss 1041.
  • the externally threaded portions 1037 at both ends of the threaded connector 1032 are respectively threadedly connected to the corresponding locknuts 1033 through the corresponding through holes 1044 of the connected member 1031, and the two through holes 1044 on the connector 1031 constrain the threaded connectors 1032 to be opposite each other.
  • the threaded connector body 1036 axially abuts the side of the connected member 1031
  • the lock nut 1033 axially abuts the other side of the connected member 1031
  • the locking nut 1033 at both ends of the threaded connecting member 1032 connects the threaded connecting member
  • the 1032 and the connected member 1031 are fastened together.
  • the rotation preventing sleeve 1034 is installed outside the lock nut 1033, and the resisting position of the rotation preventing boss 1041 is close to the rotation preventing hole 1045 or is in contact with the rotation preventing hole 1045, and the nut rotation preventing portion 1038 is matched with the rotation preventing portion 1042 of the rotation preventing sleeve.
  • the restraining lock nut 1033 rotates relative to the rotation preventing sleeve 1034.
  • the rotation preventing boss 1041 is resisted by the rotation preventing hole 1045 on the side facing the loosening direction of the lock nut 1033, and the rotation preventing sleeve 1034 is installed outside the locking nut 1033.
  • the rotation sleeve 1034 is rotated relative to the connected member 1031.
  • the resisting nut 1035 axially limits the rotation sleeve 1034 outside the nut rotation portion 1038 of the lock nut 1033.
  • the lock nut 1033 and the threaded connection member at both ends of the threaded connection member 1032 1032, the connected members 1031 are non-rotatably mounted together.
  • three square-shaped escape holes 1072 are uniformly arranged along the outer circumferential direction of the rotation preventing through hole 1071, and three holding grooves are provided on the outer circumference of the rotation preventing sleeve 1073.
  • the through hole 1071 is a closed inner gear hole.
  • the limiting member 1074 includes an annular stopper body 1075.
  • the center of the limiting member body 1075 is provided with a central through hole 1076.
  • the minimum diameter of the central through hole 1076 is larger than the maximum diameter of the through hole 1071.
  • Three grooves 1077 are uniformly distributed in the circumferential direction of the hole wall of the central through hole 1076, and the end faces of the vertical stopper body 1075 and the corresponding side of each groove 1077 are provided with the first elasticity flush with the bottom surface of each groove 1077.
  • the arm 1078 has an arc-shaped elastic arm 1079 bent along the axial center of the central through hole 1076 along the end of the first elastic arm 1078, and a second elastic arm 1080 is formed vertically along the end of the curved elastic arm 1079.
  • the end of the second elastic arm 1080 is horizontally bent toward the central through hole 1076 to form a limiting portion 1081.
  • the first elastic arm 1078 and the second elastic arm 1080 are line-symmetric with respect to the axis of the curved elastic arm 1079.
  • the first resilient arm 1078, the curved resilient arm 1079, and the second resilient arm 1080 form a U-shaped resilient arm 1082.
  • the limiting portion 1081 is in the same plane as the stopper body 1075.
  • the outer diameter of the stopper body 1075 is smaller than the outer diameter of the rotation preventing sleeve 1073.
  • the U-shaped elastic arm 1082 is engaged with the escape through hole 1072.
  • the axis position relationship of the rotation preventing through hole 1071 of the rotation preventing sleeve 1073 corresponds to the axial positional relationship of the center through hole 1076 of the limiting member 1074, and the three U-shaped elastic arms 1082 on the limiting member 1074 are respectively mounted on the rotation preventing sleeve 1073.
  • Three sheltered through holes 1072 The end surface of the stopper body 1075 is welded to the end surface of the rotation preventing sleeve 1073.
  • the limiting portion 1081 of the limiting member 1074 radially protrudes from the rotation preventing through hole 1071 of the rotation preventing sleeve 1073.
  • the distance between the first elastic arm 1078 and the second elastic arm 1080 of the limiting member 1074 is greater than the length of the limiting wall of the limiting member 1081 of the limiting member 1074 protruding from the rotation preventing through hole 1071 of the rotation preventing sleeve 1073 to provide Deformation space.
  • the rotation preventing sleeve 1073 is mounted together with the limiting member 1074 outside the rotation preventing portion 1084 of the lock nut 1083, and the rotation preventing boss (not shown) of the rotation preventing sleeve 1073 is inserted into the rotation preventing hole of the attachment body 1085 (not shown).
  • the U-shaped elastic arm 1082 of the limiting member 1074 is elastically deformed to insert the limiting portion 1081 into the receiving space formed by the stopping portion 1084 and the resisting portion 1086, and is blocked by the locking portion 1084.
  • the end face of the portion 1086 resists and axially limits the side of the rotation preventing sleeve 1073 away from the attachment 1085.
  • the limiting member includes three elastic limiting members 1101 having the same structure.
  • the elastic limiting member 1101 is formed by bending a long strip of metal.
  • the elastic limiting member 1101 includes a horizontal limiting portion 1102.
  • the first elastic arm 1103 that is bent by the vertical limiting portion 1102 is horizontally bent toward the limiting portion 1102 along the end of the first elastic arm 1103.
  • the buckle 1104 is formed by bending the buckle 1104 in the opposite direction obliquely upward, and then bending the reverse arc downward, and then horizontally bending toward the limiting portion 1102, and then vertically downward along the end of the buckle 1104.
  • the bent second elastic arm 1105 is further disposed on the same plane along the resisting portion 1106 that is horizontally bent away from the end portion of the second elastic arm 1105.
  • the resisting portion 1106 and the limiting portion 1102 are located on the same plane.
  • the two horizontal portions 1107 of the buckle 1104 are located on the same plane.
  • the distance between the limiting portion 1102 and the horizontal portion 1107 of the corresponding buckle 1104 is equal to the thickness of the cuff sleeve 1108.
  • the limiting portion 1102 of the elastic limiting member 1101 is oriented toward the axial center of the rotation preventing sleeve 1108, and the buckle 1104 is inserted through the hollow through hole 1109 of the rotation preventing sleeve 1108 to mount the elastic limiting member 1101 and the rotation preventing sleeve 1108.
  • the limiting portion 1102 of the elastic limiting member 1101 radially protrudes from the hole wall of the rotation preventing through hole 1110 of the rotation preventing sleeve 1108.
  • the distance between the two elastic arms of the elastic limiting member 1101 is greater than the elastic limiting member 1101.
  • the limiting portion 1102 protrudes the length of the hole wall of the rotation preventing through hole 1110 of the rotation preventing sleeve 1108 to provide a deformation space.
  • the other two elastic limiting members 1101 and the anti-rotation sleeve 1108 are mounted together in the same manner.
  • the rotation preventing sleeve 1108 is mounted together with the three elastic limiting members 1101 mounted together outside the rotation preventing portion 1112 of the lock nut 1111, and the rotation preventing boss (not shown) of the rotation preventing sleeve 1108 is inserted into the attachment body 1113.
  • the buckle 1104 of the elastic limiting member 1101 and the first elastic arm 1103 are elastically deformed to insert the limiting portion 1102 into the rotation preventing portion 1112 of the lock nut 1111 and the resisting portion 1114.
  • the limiting portion 1102 is accommodated in the space, and is blocked by the rotation preventing portion 1112 toward the end surface of the blocking portion 1114, and is axially restricted to the side of the rotation preventing sleeve 1108 away from the attached body 1113.
  • three or more pad protrusions 1244 are provided on the side of the resisting portion 1242 of each elastic limiting member 1241 facing away from the buckle 1243 , and the limiting portion 1245 and the resisting portion The sections 1242 are on the same plane.
  • the padding protrusion 1244 allows the stopper portion 1245 to be clearance-fitted with the attachment body (not shown) and the rotation preventing sleeve (not shown), and the rotation stop stopper assembly is attached to the rotation preventing abutment portion of the screw (not shown).
  • the limiting portion 1245 is facilitated to move between the rotation preventing sleeve and the attachment body.
  • the distance between the buckle 1243 and the resisting portion 1242 is equal to the thickness of the rotation preventing sleeve, and is gradually reduced from the top end of the buckle 1243 toward the direction of the limiting member.
  • the elastic limiting member 1241 of the structure, the second elastic arm The 1247 is tightly engaged with the through hole of the anti-rotation sleeve.
  • the noise can be greatly reduced, and the rotation stop limit component is installed outside the rotation stop resisting portion 1242 of the screw; the first elastic arm 1246 is matched with the air escape through hole, and the rotation stop limit component is mounted on the screw During the upper process, when the first elastic arm 1246 and the buckle 1243 are elastically deformed, the first elastic arm 1246 can move freely in the through hole, so that the limiting portion 1245 can easily protrude into the limiting portion receiving space.
  • the two ends of the curved elastic arm 1261 are gradually reduced toward the both sides of the limiting member.
  • the limiting member of the structure, the first elastic arm 1262, and the first A half-arc elastic arm 1261 that is in contact with a resilient arm 1262 is tightly fitted with a hollow through hole (not shown) of the anti-rotation sleeve (not shown), and a half-elastic elasticity that is in contact with the second elastic arm 1263
  • the arm 1261 and the second elastic arm 1263 are gap-fitted with the air-proof through hole, so that when the curved elastic arm 1261 and the second elastic arm 1263 are not elastically deformed, the limiting member does not displace relative to the rotation preventing sleeve, and the fastening connection is fastened.
  • the structure is in a severely vibrating environment, the noise can be greatly reduced, and the rotation stop limit assembly is mounted outside the anti-rotation abutment portion (not shown) of the screw (not shown); the rotation stop limit assembly is mounted on the screw During the upper process, when the curved elastic arm 1261 and the second elastic arm 1263 are elastically deformed, the half curved elastic arm 1261 and the second elastic arm 1263 are elastically movable in the hollow through hole, so that the limiting portion is more easily inserted. The limit portion is accommodated in the space.
  • the crankshaft link mechanism includes a fastening connection assembly, a crankshaft 1281, and a link set.
  • the fastening connection assembly differs from the embodiment 1 in that the outer circumference of the head 1297 of the screw 1288 includes a central angle greater than An arc surface of 180° and a rotation stop plane 1282 connecting the ends of the arc surface.
  • the link set includes a link body 1283, a link head cover 1284, and a link big head bush 1285.
  • the link body 1283 includes a link head 1286 and a link head 1287.
  • the connecting rod head 1286 is provided with a through hole 1290 that cooperates with the external thread portion 1289 of the screw 1288.
  • the connecting rod head cover 1284 is provided with a through hole 1291 that cooperates with the external thread portion 1289 of the screw 1288.
  • a circular large head stop hole 1294 that engages with the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is provided on a side of the connecting rod head cover 1284 facing away from the connecting rod head 1286.
  • the connecting rod big head bushing 1285 is hug outside the crankshaft 1281, and the connecting rod big head 1286 and the connecting rod big head cover 1284 are hugged outside the connecting rod big head bushing 1285; the external threaded portion 1289 of the screw 1288 passes through the through hole 1290 of the connecting rod big head 1286, and the connecting The through hole 1291 of the rod head cover 1284 is screwed with the threaded through hole 1296 of the lock nut 1295 and the rotation preventing plane 1282 of the screw 1288 is resisted by the side wall of the connecting rod head 1286 to rotate the restraining screw 1288 relative to the connecting rod head 1286, the screw 1288 Non-rotatably mounted with the connecting rod head 1286, the head 1297 of the screw 1288 axially resists the connecting rod head 1286, the locking nut 1295 axially resists the connecting rod head cover 1284, and the screw 1288 and the lock nut 1295 connect the connecting rod head
  • the 1286 and the connecting rod head cover 1284 are fastened together.
  • the rotation preventing sleeve 1292 is mounted outside the rotation preventing portion 1298 of the lock nut 1295 and the abutting position of the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is close to or in contact with the large head rotation hole 1294, and the resisting nut 1299 is mounted on the external thread of the screw 1288. In the portion 1289, the resisting nut 1299 axially limits the side of the anti-rotation sleeve 1292 away from the connecting rod head cover 1284.
  • the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is rotated by the large head rotation hole 1294 against the restriction rotation sleeve 1292 on the side of the lock nut 1295 in the unscrewing direction, and the nut rotation preventing portion 1300 and the rotation preventing sleeve are rotated.
  • the inner rotation stop portion 1301 cooperates with the restraining rotation sleeve 1292 to rotate relative to the lock nut 1295.
  • the screw 1288 is non-rotatably mounted with the lock nut 1295, the link head 1286 and the link head cover 1284.
  • the rotation preventing sleeve of the rotation preventing sleeve can be two or more, and the attachment body is provided with an auxiliary rotation preventing hole which is matched with the rotation preventing projection boss of the rotation preventing sleeve;
  • the body stop hole can also be an integral multiple of the rotation sleeve of the rotation preventing sleeve; according to an embodiment of the present invention, those skilled in the art can realize the invention without any creative labor, and therefore will not be described in the specific embodiment.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

Disclosed is a fastening connection structure, comprising a fastening connection assembly, a parent body (16) and an appendage body (17). The fastening connection assembly comprises a screw rod (1), a locknut (2) and a rotation stopping sleeve (3). A rotation stopping boss (14) of the rotation stopping sleeve, for restraining the rotation stopping sleeve (3) from rotating in the direction in which the screw rod would become loose, is axially provided on one end face of the rotation stopping sleeve (3) in a projecting manner. The parent body (16) and the appendage body (17) are fastened and connected to each other via the screw rod (1) and the locknut (2). The rotation stopping sleeve (3) is installed outside the locknut (2); the rotation stopping boss (14) of the rotation stopping sleeve is inserted into a rotation stopping hole (22) of the appendage body; and the rotation stopping sleeve (3) is axially limited outside the locknut (2). The rotation stopping boss (14) of the rotation stopping sleeve is resisted by the rotation stopping hole (22) of the appendage body on a side in the direction in which the locknut would become loose so as to restrain the rotation stopping sleeve (3) from rotating relative to the appendage body (17). The parent body (16) and the appendage body (17) are fastened and connected to each other via the screw rod (1) and the locknut (2) in a non-rotatable manner. The present invention has the advantages of not requiring a rotation stopping piece and the machining of a rotation stopping hole on the appendage body. The rotation stopping sleeve is quick, convenient, and reliable to install and remove. The screw rod cannot rotate in reverse and become loose.

Description

一种紧固连接结构、紧固连接组件、曲轴连杆机构Fastening connection structure, fastening connection component, crankshaft linkage mechanism 技术领域:Technical field:
本发明涉及一种螺纹副机械静联接两个以上的物体的紧固连接技术;特别是涉及一种通过螺杆和锁紧螺母机械静连接曲轴连杆机构、轨道结构、飞机、船舶、设备、航空航天设备、航母、飞船、火箭、发动机、核反应设备、火车、高铁、铁轨、钢结构建筑、钢结构桥梁、汽车等等机械设备上的关键部位上的机械零件的紧固连接结构、止转结构、紧固连接组件、曲轴连杆机构,这些机械零件的使用环境特别恶劣如震动大、高温环境、载荷大等,且对螺纹副机械静连接的连接可靠性要求特别高。The invention relates to a fastening connection technology of a thread pair mechanically coupling two or more objects; in particular, a mechanical static connection of a crankshaft linkage mechanism, a track structure, an aircraft, a ship, a device, and an aviation through a screw and a lock nut Fastening connection structure and anti-rotation structure of mechanical parts on key parts of aerospace equipment, aircraft carriers, spacecraft, rockets, engines, nuclear reaction equipment, trains, high-speed rail, railroad tracks, steel structures, steel bridges, automobiles, etc. The fastening components and the crankshaft linkage mechanism are particularly harsh in use environment such as large vibration, high temperature environment, large load, etc., and the connection reliability of the mechanical connection of the thread pair is particularly high.
背景技术Background technique
物体间的螺纹副机械静联接出现一些关键部位连接的螺栓断裂、螺纹连接的失效引起的安全问题和安全事故,经常碰到,是全球面临的通病,也是本领域的技术人员不断研究改进急待解决还没有解决的问题。小螺栓、大事故,经常因螺栓断裂发生重大事故,如汽车的发动机的连杆螺栓断裂造成捣缸事故;2009年4月18日发生的哈尔滨塔吊螺栓断裂造成的1死4伤的事故;据台湾媒体报道的核二厂一号机反应炉检出7支锚定螺栓断裂、毁损可能引起核安全的事故;2012年6月29日16时45分发生的、5号座舱支撑系统的中导柱螺栓发生疲劳断裂、造成深圳东部华侨城“太空迷航”娱乐项目发生6人死亡、10人受伤的重大安全事故;作为高端车辆的代表厂家,因无法解决螺丝断裂的技术问题,导致宝马发动机因螺丝断裂瞬间失去动力熄火事件导致召回23万辆车(宝马(中国)汽车贸易有限公司、华晨宝马汽车有限公司决定自2014年6月18日起,召回23万辆车),制造厂家受到巨大经济损失和商誉损失,更严重的是会造成车主的生命财产安全。虽然在很多情况下,特别是在振动状态下,经常需要对已经锁紧的紧固连接件定期检修加固,防止螺纹副朝旋松方向旋转松动甚至是松脱带来的安全事故,但全世界每年因为螺纹连接失效导致的一系列安全事故非常多,例子不胜枚举。Threaded sub-mechanical static joints between objects have some bolts broken at key parts, safety problems caused by failure of threaded connections and safety accidents, which are often encountered in the world, and are a common problem faced by technicians in the field. Solve the problem that has not been solved. Small bolts, large accidents, and frequent major accidents due to bolt breakage, such as the collapse of the connecting rod bolts of the engine of the automobile; the accident of 1 death and 4 injuries caused by the break of the bolts of Harbin tower crane on April 18, 2009; Taiwan's media reported that the No. 1 reactor of the No. 2 Plant of the Nuclear Power Plant detected 7 anchor bolt breaks and damages that may cause nuclear safety accidents; the guidance of the No. 5 cockpit support system occurred at 16:45 on June 29, 2012 Fatigue fracture of stud bolts caused a serious safety accident in which 6 people were killed and 10 people were injured in the "Space Trek" entertainment project in OCT East Shenzhen. As a representative manufacturer of high-end vehicles, the BMW engine was broken due to technical problems that could not solve the screw break. The loss of power and flameout at the moment of the break led to the recall of 230,000 vehicles (BMW (China) Automobile Trading Co., Ltd., BMW Brilliance Automotive Co., Ltd. decided to recall 230,000 vehicles since June 18, 2014), and the manufacturer suffered huge economic losses. And the loss of goodwill, more serious is the safety of the owner's life and property. Although in many cases, especially in the vibrating state, it is often necessary to regularly check and tighten the already fastened fastening joints to prevent the thread pair from rotating loose or even loose, resulting in a safety accident. There are a number of safety incidents each year due to failure of the threaded connection, and the examples are numerous.
螺纹连接的可靠性是靠螺纹副的摩擦产生自锁以及螺纹副的接触面间的摩擦来保证。一般来说,连接螺纹具有一定的自锁性,在静载荷条件下并不会自动松脱。但是,由于连接的工作条件不可避免地会存在冲击、振动、变载荷作用。在这些工况条件下,螺纹副之间的摩擦力会出现瞬时消失或减小;同时在高温或温度变化比较大的场合,材料会发生蠕变和应力松弛,也会使摩擦力减小。在多次作用下,就会造成螺纹连接的逐渐松脱。The reliability of the threaded connection is ensured by the self-locking of the friction of the thread pair and the friction between the contact faces of the thread pair. In general, the connecting thread has a certain self-locking property and does not automatically loosen under static load conditions. However, due to the working conditions of the connection, there are inevitably impacts, vibrations, and load changes. Under these conditions, the friction between the pairs of threads will disappear or decrease instantaneously; at the same time, in the case of high temperature or temperature changes, the material will creep and stress relaxation, and the friction will be reduced. Under multiple actions, the threaded connection is gradually released.
螺纹连接的失效,主要原因是由于预紧力减少导致螺纹松脱,因此螺纹连接防松的本质,就是防止螺纹副的朝旋松方向旋转(也就是内螺纹孔与外螺纹部之间的朝旋松方向旋转),如螺栓与螺母间的朝旋松方向旋转。The main reason for the failure of the threaded connection is that the thread is loose due to the reduction of the pre-tightening force. Therefore, the essence of the threaded connection is to prevent the thread pair from rotating in the direction of loosening (that is, the direction between the threaded hole and the externally threaded portion). Rotate in the direction of rotation, such as the rotation between the bolt and the nut.
现有的机械机械防松方法主要包括利用开口销、止动垫片及串钢丝绳等机械防松方法。现在飞机上很多还采用串联钢丝绳的防松方法。The existing mechanical mechanical anti-loosening methods mainly include mechanical anti-loose methods such as a split pin, a stop pad and a string wire rope. Many of the aircraft are now also using the anti-loose method of the series wire rope.
为了防止螺纹连接松脱,人们一直在不懈努力。In order to prevent loose thread connections, people have been working tirelessly.
专利号为US1755807、申请日为1929年4月6日、公开日为1930年4月22日的美国专利中,公开了一种防松的螺杆螺母结构,包括螺杆、锁紧螺母、止转套。锁紧螺母内设有螺纹通孔和与其连通的内齿轮形的止转孔,止转孔的最小孔径大于螺纹通孔的孔径。止转套设有止转通孔,止转套外周为外齿轮形,止转通孔孔壁上设有止转条,在螺杆上设有与止转条配合的止转槽。止转套的外齿轮形外周与锁紧螺母止转孔内齿轮型孔壁配合约束锁紧螺母相对止转套旋转,止转套的止转套插入螺杆的止转槽约束螺杆相对止转套旋转,因此螺杆与锁紧螺母不可转动地安装在一起。该专利中,由于止转套完全容置在锁紧螺母的止转孔中,止转套很难从锁紧螺母的止转孔中取出;而且在螺杆、螺母的使用过程中,由于止转套、螺杆和螺母生锈、灰尘进入止转套与螺杆和螺母间、止转套与螺杆和螺母的相互渗透等会造成止转套与螺杆螺母间产生很大的咬合力,从而造成止转套无法从螺杆与螺母间取出。如果止转套很难或无法从螺杆与螺母间取出,就很难或无法将螺母和螺杆分离,因而却失去了使用螺纹副连接就是为了能够很方便地将螺杆和螺母分离的最基本用途,因而这种螺杆和螺母结构是没有多大的使用价值。U.S. Patent No. U.S. Patent No. 1,755,807, filed on Apr. 6, 1 s, filed on Apr. . The lock nut is provided with a threaded through hole and an internal gear-shaped rotation stop hole communicating therewith, and the minimum hole diameter of the rotation stop hole is larger than the diameter of the threaded through hole. The rotation preventing sleeve is provided with a rotation preventing through hole, and the outer circumference of the rotation preventing sleeve is an outer gear shape, and a rotation preventing strip is arranged on the wall of the rotation preventing through hole, and a rotation preventing groove is matched with the rotation preventing strip on the screw. The outer gear-shaped outer circumference of the anti-rotation sleeve and the gear-shaped hole wall of the lock nut rotation-stop hole cooperate with the constraint lock nut to rotate relative to the rotation sleeve, and the rotation sleeve of the rotation sleeve is inserted into the rotation groove of the screw to restrain the screw relative to the rotation sleeve Rotating, so the screw and the lock nut are mounted non-rotatably. In this patent, since the rotation preventing sleeve is completely accommodated in the rotation preventing hole of the lock nut, the rotation preventing sleeve is difficult to be taken out from the rotation preventing hole of the locking nut; and during the use of the screw and the nut, due to the rotation stop The sleeve, the screw and the nut are rusted, the dust enters between the rotation sleeve and the screw and the nut, and the mutual penetration of the rotation sleeve and the screw and the nut causes a large bite force between the rotation sleeve and the screw nut, thereby causing the rotation. The sleeve cannot be removed from between the screw and the nut. If the sleeve is difficult or impossible to remove from between the screw and the nut, it is difficult or impossible to separate the nut from the screw, thus losing the use of the threaded pair for the most basic purpose of easily separating the screw and the nut. Therefore, this screw and nut structure is of little use value.
专利号为ZL201510198765.5、申请公布号为CN 104819197A、申请日为2015年4月24日、公布日为2015年8月6日的发明专利中,一种防松动螺母连接结构,包括连接件及穿过连接件的螺杆,螺杆上旋合螺母将连接件紧固,螺母外侧套接一防松套圈,防松套圈与连接件间设有防旋转结构,防旋转结构包括连接件上对应螺母设置的沉槽,螺母旋合后底部设于沉槽内,防松套圈外圈设有卡头,沉槽内侧壁设有供卡头卡入的卡槽;防松套圈高度小于沉 槽的高度,防松套圈与螺母和沉槽之间为过盈配合。该发明的防松动螺母连接结构,由于增加了一个防松套圈,且防松套圈与连接件间设有防旋转结构,防松套圈内圈为与螺母配合的正六边形结构,防松套圈内圈与螺母间不能相对旋转,同时防旋转结构防止防松套圈与连接件相对旋转,因而可以防止螺母紧固后松动。这种防松动螺母连接结构,虽然实现了防止螺母的松动,但一方面由于防松套圈高度小于沉槽的高度、防松套圈与螺母和沉槽之间为过盈配合,在拆卸防松动螺母连接结构时,防松防松套圈是无法从沉槽内取出,无法取出防松防松套圈,就无法将螺母和螺杆分离,因而却失去了使用螺纹副连接就是为了能够很方便地将螺杆和螺母分离的最基本用途,,因而这种结构是没有任何意义的;另一方面,沉槽内侧壁设有供卡头卡入的卡槽,这种卡槽结构无法机械加工出来,如果不是事先与被连接件一起成型,则需要用电火花等工艺才能加工出来,因而使用成本特别高;还有,如果不对螺杆止转,螺杆相对锁紧螺母还是会转动,只对螺母止转也是没有任何现实意义。上述种种原因,会使本领域的技术人员认为该发明的技术方案无任何使用价值,大大阻碍了本领域的技术人员改进该专利的技术方案的积极性。Patent No. ZL201510198765.5, application publication number is CN 104819197A, application date is April 24, 2015, and publication date is August 6, 2015. The anti-loose nut connection structure includes connecting parts and Through the screw of the connecting piece, the screw on the screw is fastened to the connecting piece, the outer side of the nut is sleeved with a anti-loose ferrule, and the anti-rotation structure between the anti-rotation ferrule and the connecting piece is provided, and the anti-rotation structure includes a corresponding connector The sinking groove provided by the nut is arranged in the sinking groove after the nut is screwed, and the outer ring of the anti-loose ferrule is provided with a chuck, and the inner side wall of the sinking groove is provided with a card slot for the chuck to be inserted; the height of the anti-loose ferrule is less than Shen The height of the groove, the anti-loose ferrule and the nut and the sink are an interference fit. The anti-loose nut connecting structure of the invention has a anti-rotation ferrule and a anti-rotation structure between the anti-loose ferrule and the connecting member, and the inner ring of the anti-loose ferrule is a regular hexagonal structure matched with the nut, preventing The inner ring of the loose ferrule and the nut cannot rotate relative to each other, and the anti-rotation structure prevents the anti-loose ferrule from rotating relative to the connecting member, thereby preventing the nut from loosening after being fastened. The anti-loose nut connecting structure realizes the prevention of the looseness of the nut, but on the one hand, since the height of the anti-loose ferrule is smaller than the height of the sinking groove, and the anti-loose ferrule is in an interference fit with the nut and the sinking groove, the disassembly prevention When loosening the nut connection structure, the anti-loose and anti-loose ferrule cannot be taken out from the sinking groove, and the anti-loose and anti-loose ferrule cannot be taken out, so that the nut and the screw cannot be separated, so that the use of the threaded pair connection is lost. The most basic use of the separation of the screw and the nut, and thus the structure does not make any sense; on the other hand, the inner side wall of the sinker is provided with a card slot for the chuck to be inserted, and the card slot structure cannot be machined. If it is not molded with the connected parts in advance, it needs to be processed by electric sparks and the like, so the use cost is particularly high; and if the screw is not stopped, the screw will rotate relative to the lock nut, only the nut is stopped. There is no practical significance in turning. The above various reasons will make those skilled in the art believe that the technical solution of the invention has no use value, and greatly hinders the enthusiasm of those skilled in the art to improve the technical solution of the patent.
专利号为ZL97112246.6、公开日为97112246.6的发明专利中,公开了一种防松螺母,包括工具安装部及与其同轴向上突出设置的环形突出部,它们中间有贯通的螺纹孔。这种防松螺母,就是HardLock螺母,号称世界上唯一的绝不松动的螺母,是哈德洛克工业株式会社的社长若林克彦用了近20年的时间,通过不断技术改进而研究出来的技术成果,现在高铁上应用比较多。高铁运营时,高速行驶的列车和铁轨不断接触,形成的震动非常大,一般的螺丝在这种震动中会被震松震飞。不想被震飞,那么就需要螺丝和螺母丝丝入扣,永不松动才行。这个要求看起来很简单,但是要满足它并不容易。高铁代表中国创造,却用日本螺母,因而有媒体发出类似从一颗螺母看出中国制造和日本制造的差距的感叹。但这种螺母制造工艺非常复杂,制造精度要求特别高,现在的情况是,有产品图、有产品,没有哈德洛克公司的独特的技术和诀窍,却无法制造出来,因而价格昂贵,一个至少几十元钱;这种螺母也无法做到完全不松,只是在现有的防松螺母中防松效果算很好的;这种螺母,重复使用几十次后就不能再用。In the invention patent of the patent number ZL97112246.6, the publication date is 97112246.6, a lock nut is disclosed, which comprises a tool mounting portion and an annular protrusion projecting upwardly coaxially therewith, with a threaded hole penetrating therethrough. This kind of locknut is the HardLock nut, which is the only loose nut in the world. It is the technology that has been developed by the president of Hadlock Industrial Co., Ltd. for nearly 20 years through continuous technical improvement. The results are now more widely used on high-speed rail. When the high-speed rail is in operation, the trains and rails at high speed are constantly in contact, and the vibration generated is very large. The general screws will be shaken and shaken in this vibration. If you don't want to be shocked, you need the screws and nut to get into the buckle, never loose. This requirement seems simple, but it is not easy to satisfy it. The high-speed rail represents China's creation, but it uses Japanese nuts. Therefore, some media have issued a sigh that looks like a gap between Chinese manufacturing and Japanese manufacturing. However, this nut manufacturing process is very complicated, and the manufacturing precision is extremely high. Now, there are product drawings and products. Without the unique technology and know-how of Hardlock, it cannot be manufactured, so it is expensive, at least one. Dozens of dollars; this kind of nut can not be completely loose, but the anti-loose effect in the existing locknut is very good; this nut can not be used after repeated use for dozens of times.
专利号为ZL201520399393.8的实用新型专利中,公开了一种自紧螺母、螺栓紧固件,紧固件包括自紧螺母本体、自紧垫圈和普通螺栓;自紧螺母本体与自紧垫圈接触面为平滑过渡的螺旋面;自紧螺母本体与普通螺栓螺纹连接;螺栓紧固件包括自紧螺栓、自紧垫圈和普通螺母;普通螺母与自紧螺栓螺纹连接。该自紧螺母、螺栓紧固件,采用自紧原理,在螺母或螺栓上设置一自紧结构,使其锁紧后达到自紧的效果,让螺母不再出现移位或者松动。这种自己螺母,又称自紧王螺母和永不松动的螺母,并宣称其防松能力超过hardlock螺母,在央视中有报道。这种螺母由于没有广泛使用,其防松效果如何,无法判断。Patent No. ZL201520399393.8 discloses a self-tightening nut and a bolt fastener. The fastener includes a self-tightening nut body, a self-tightening washer and a common bolt; the self-tightening nut body is in contact with the self-tightening washer The surface is a smooth transition spiral surface; the self-tightening nut body is screwed with the common bolt; the bolt fastener includes a self-tightening bolt, a self-tightening washer and a common nut; the ordinary nut is screwed with the self-tightening bolt. The self-tightening nut and the bolt fastener adopt a self-tightening principle, and a self-tightening structure is arranged on the nut or the bolt to make the self-tightening effect after the locking, so that the nut is no longer displaced or loosened. This kind of self-nut, also known as self-tightening nut and never loose nut, and claims that its anti-loose ability exceeds the hardlock nut, has been reported in CCTV. Since this nut is not widely used, its anti-loosening effect cannot be judged.
公开号为CN201934467U、公开日为2011年8月17日的实用新型专利中,公开了一种前端单螺纹螺旋式后双线锚固螺钉,它主要包括螺杆,螺杆上设有自攻螺纹,螺杆尾端设有连接结构件,连接结构件为外六角头,外六角头上设有垫片,垫片底部设有防松齿。该实用新型中,公开的仅是一种螺钉结构,所描述的所有结构均是螺钉结构的一部分,从图和外六角头上设有垫片的文字表达上来看,均可以毫无异议理解为垫片是螺钉的一部分,故不存在在垫片上设有与外六角头配合的止转通孔,垫片安装在外六角头外,垫片与螺杆是分开的两个构件。由于垫片是螺钉的一部分,在螺钉的旋入过程中,垫片及垫片上的防松齿也随着螺杆一起旋转,这样虽然在垫片上设有防松齿,防松齿在嵌入被连接的物体时并不是仅轴向嵌入被连接的物体,而是在旋转的过程产生轴向和周向位移嵌入被连接的物体,这样在螺钉旋转的过程中防松齿会在被连接物体的表面形成一条沿螺钉旋入方向由浅渐深的周向槽。周向槽一方面破坏被连接物体外观的美观;另一方面大大减小防松齿与被连接的物体的嵌入力,可以说防松齿对螺钉的反向防松脱作用是十分有限的;特别是由于嵌入齿的存在,使螺钉很难锁紧被连接的物体。因此这种结构的螺钉的防松齿,是起不了放松的作用的,这种结构的螺钉,是没有任何使用价值的。In the utility model patent with the publication number CN201934467U and the publication date of August 17, 2011, a front-end single-thread spiral rear double-line anchoring screw is disclosed, which mainly comprises a screw, and the screw has a self-tapping thread and a screw tail. The connecting end is provided with a connecting structural member, the connecting structural member is a hexagonal head, the outer hexagon head is provided with a gasket, and the bottom of the gasket is provided with a locking tooth. In the utility model, only a screw structure is disclosed, and all the structures described are part of the screw structure. From the point of view of the figure and the words on the outer hexagonal head, it can be understood without any objection. The gasket is a part of the screw, so there is no through-hole which is provided with the hexagonal head on the gasket. The gasket is installed outside the outer hexagonal head, and the gasket and the screw are two separate members. Since the gasket is a part of the screw, during the screwing process of the screw, the anti-loose teeth on the gasket and the gasket also rotate with the screw, so that although the anti-loose teeth are provided on the gasket, the anti-loose teeth are embedded. The connected object is not only embedded in the axially connected object, but in the process of rotation, the axial and circumferential displacements are embedded in the connected object, so that the anti-loose teeth will be connected to the connected object during the rotation of the screw. The surface forms a circumferential groove that is shallower and deeper in the direction in which the screw is screwed. The circumferential groove on the one hand destroys the appearance of the connected object; on the other hand, the insertion force of the anti-loose tooth and the connected object is greatly reduced, and it can be said that the anti-loose effect of the anti-loose tooth on the screw is very limited; In particular, due to the presence of the embedded teeth, it is difficult for the screws to lock the connected objects. Therefore, the locking teeth of the screw of this structure can not play the role of relaxation, and the screw of this structure has no use value.
从专利号为US1755807、申请日为1929年4月6日的美国专利中,发明了用止转套来限制螺栓相对螺母转动的防松技术,到专利号为ZL201510198765.5、申请日为2015年4月24日的中国发明专利中,再次提出止转套来限制螺母转动的技术方案,历时八十六年,都没有解决既能用止转套对螺栓和螺母防松或用止转套对螺栓和螺母防松、又能方便快速可靠的将止转套从止转孔中取出从而使螺栓和螺母拆离的技术问题。现有的认为防松效果好的hardlock螺母、自紧王螺母,都不是通过采用止转套阻止螺母转动来实现螺栓螺母防松;快一个世纪过去了,还没有通过采用止转套阻止螺母转动来实现螺栓螺母防松的技术应用;可见,人们陷入了虽然采用止转套能阻止螺母转动来实现螺栓螺母防松、但螺栓螺母却很难或 无法拆卸的技术误区,形成了采用止转套阻止螺母转动来实现螺栓螺母防松的技术无使用价值的惯性思维,从而阻止了本领域的技术人员改进采用止转套阻止螺母转动来实现螺栓螺母防松的技术方案的积极性。In the U.S. Patent No. US Pat. No. 1,755,807, filed on Apr. 6, 1 s., the disclosure of the disclosure of the disclosure of the patent application No. s. In the Chinese invention patent on April 24, the technical solution of the rotation sleeve to limit the rotation of the nut was again proposed. After eighty-six years, it was not solved that the bolt and nut could be loosened or the sleeve can be locked with the sleeve. The bolts and nuts are loosened, and the technical problem of removing the bolts and nuts by removing the rotation sleeve from the rotation hole is convenient, fast and reliable. The existing hardlock nut and self-tightening nut which are considered to have good anti-loose effect are not used to prevent the nut from rotating by using the anti-rotation sleeve to prevent the nut from rotating. As soon as a century has passed, the nut has not been prevented from rotating by using the anti-rotation sleeve. To realize the technical application of the bolt and nut to prevent loosening; it can be seen that although people use the anti-rotation sleeve to prevent the nut from rotating to achieve the bolt and nut, the bolt and nut are difficult or The technical misunderstanding that cannot be disassembled forms a technique of using the anti-rotation sleeve to prevent the rotation of the nut to realize the looseness of the bolt and nut. This prevents the skilled person from improving the use of the anti-rotation sleeve to prevent the nut from rotating to realize the bolt and nut. The enthusiasm of the anti-loose technical solution.
上述现有技术的紧固连接结构,都是需要将止转套置于止转孔中约束锁紧螺母相对螺杆朝旋松方向旋转。缺点是如果止转套完全容置在止转孔中,如果又没有将止转套从止转孔中取出的取出结构,止转套很难从止转孔中取出;还有,需要在附体上加工与止转套配合的止转孔,或需要一个与附体不可转动地安装在一起的止转件,在止转件上加工与止转套外周配合的止转孔,成本高。In the above prior art fastening connection structure, it is necessary to place the rotation preventing sleeve in the rotation preventing hole to restrain the rotation of the locking nut with respect to the screw in the unscrewing direction. The disadvantage is that if the rotation preventing sleeve is completely accommodated in the rotation preventing hole, if the removal structure for taking out the rotation preventing sleeve from the rotation preventing hole is not obtained, the rotation preventing sleeve is difficult to be taken out from the rotation preventing hole; The rotation hole of the body is matched with the rotation preventing sleeve, or a rotation preventing member which is non-rotatably mounted with the attachment body is required, and the rotation preventing hole which cooperates with the outer circumference of the rotation preventing sleeve is processed on the rotation preventing member, and the cost is high.
发明内容Summary of the invention
针对现有技术中存在的问题,本发明克服了现有的本领域的技术人员认采用止转套限制螺纹副朝旋松方向旋转松脱的防松技术方案、因止转套很难或无法从第一止转孔中取出、导致无使用价值的惯性思维。In view of the problems existing in the prior art, the present invention overcomes the prior art anti-loose technical solution that the anti-rotation sleeve restricts the rotation of the thread pair to the loosening direction, and it is difficult or impossible to stop the rotation sleeve. Taken out of the first tore hole, resulting in a useless inertia thinking.
本发明要解决的技术问题是,提供一种不需要止转件、也不需在止转套外周设有止转套外止转部、在附体上加工与止转套外周配合的止转孔来约束止转套相对附体旋转、结构简单、止转套安装拆卸方便的紧固连接结构、紧固连接组件、曲轴连杆机构。The technical problem to be solved by the present invention is to provide a rotation stop that does not require a rotation stop member, and does not need to have a rotation stop sleeve on the outer circumference of the rotation preventing sleeve, and a rotation stop on the attachment body and the outer circumference of the rotation prevention sleeve. The hole is used to restrain the rotation of the rotation sleeve relative to the attachment body, the structure is simple, the fastening structure of the rotation sleeve is convenient to install and disassemble, the fastening connection component, and the crankshaft linkage mechanism.
一种紧固连接结构,包括紧固连接组件、母体、附体;紧固连接组件包括螺杆、锁紧螺母;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;母体、附体上均设有与螺杆的外螺纹部配合的通孔;螺杆穿过母体上的通孔、附体的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与母体安装在一起;紧固连接组件还包括止转套;锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;附体上背离母体的一侧设有与止转套止转凸台间隙配合的附体止转孔;止转套安装在锁紧螺母外,止转套止转凸台插入附体止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被附体止转孔抵挡约束止转套相对附体旋转;螺杆、锁紧螺母不可旋转地与母体、附体安装在一起。A fastening connection structure includes a fastening connection assembly, a mother body and an attachment body; the fastening connection assembly includes a screw and a lock nut; the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion The mother body and the attached body are respectively provided with through holes that cooperate with the external thread portion of the screw; the screw passes through the through hole of the female body, and the through hole of the attached body is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body. The fastening connection assembly further comprises a rotation preventing sleeve; the outer circumference of the lock nut is provided with a circumferentially evenly arranged, axial nut rotation preventing portion; and only one axial rotation preventing through hole is provided on the rotation preventing sleeve, and the rotation is stopped The hole wall of the through hole is provided with a rotation preventing sleeve inner rotation portion matched with the nut rotation preventing portion; and an end surface of the rotation preventing sleeve is axially convexly provided with the restraining rotation preventing sleeve rotating toward the loosening direction of the lock nut The sleeve rotation stop boss, the resisting position of the rotation sleeve of the rotation sleeve is in the circumferential direction and toward the loosening direction of the lock nut; the side of the attachment body facing away from the mother body is provided with the clearance fit of the rotation sleeve of the rotation sleeve The body has a rotation stop hole; the rotation sleeve is installed outside the lock nut, and the rotation sleeve is stopped. The boss is inserted into the anti-rotation hole of the body, and the rotation sleeve is axially restrained outside the lock nut; the rotation stop of the nut and the rotation stop of the rotation sleeve cooperate with the rotation of the lock nut relative to the rotation sleeve, and the rotation is stopped. The sleeve anti-rotation boss is rotated by the attachment rotation stop hole on the side facing the unscrewing direction of the lock nut to restrain the rotation of the rotation sleeve relative to the attachment body; the screw and the lock nut are non-rotatably mounted with the base body and the attachment body.
一种紧固连接结构,包括紧固连接组件、母体、附体;紧固连接组件包括螺杆、锁紧螺母;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;母体、附体上均设有与螺杆的外螺纹部配合的通孔;紧固连接组件还包括止转套、止转垫;锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;在止转垫朝向附体的端面上凸设有止转垫止转凸台;止转套止转凸台的高度小于或等于止转垫的厚度,在附体上设有与止转垫止转凸台配合的附体止转孔;螺杆穿过母体上的通孔、附体上的通孔、止转垫的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与母体安装在一起;止转垫止转凸台插入附体止转孔内约束止转垫相对附体旋转;止转套安装在锁紧螺母外,止转套止转凸台插入止转垫止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被止转垫止转孔抵挡约束止转套相对止转垫旋转;螺杆、锁紧螺母不可旋转地与母体、附体、止转垫安装在一起。A fastening connection structure includes a fastening connection assembly, a mother body and an attachment body; the fastening connection assembly includes a screw and a lock nut; the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion The mother body and the attachment body are respectively provided with through holes that cooperate with the external thread portion of the screw; the fastening connection assembly further includes a rotation preventing sleeve and a rotation preventing pad; the outer circumference of the locking nut is provided with a circumferentially evenly arranged axial nut. a rotation stop portion; only one axial rotation preventing through hole is provided on the rotation preventing sleeve; and the rotation preventing hole of the rotation preventing through hole is provided with a rotation preventing sleeve inner rotation portion engaged with the nut rotation preventing portion; An anti-rotation sleeve anti-rotation boss that restrains the rotation sleeve from rotating in the unscrewing direction of the lock nut is axially convex on one end surface, and the anti-rotation sleeve anti-rotation boss abuts the position in the circumferential direction and faces the lock nut a loosening direction; a through hole that cooperates with the external thread portion of the screw; and a rotation preventing hole for the rotation of the rotation preventing projection of the rotation preventing sleeve; and a protruding hole on the end surface of the rotation preventing pad facing the attached body The rotation preventing pad has a rotation preventing boss; the height of the rotation preventing protrusion of the rotation preventing sleeve is less than or equal to the thickness of the rotation preventing pad The attached body is provided with an auxiliary rotation preventing hole matched with the rotation preventing pad rotation boss; the screw passes through the through hole on the female body, the through hole on the auxiliary body, and the through hole of the rotation preventing pad is screwed with the lock nut The screw is non-rotatably mounted with the mother body; the rotation preventing pad of the rotation preventing pad is inserted into the rotation stop hole of the attachment body to restrain the rotation of the rotation preventing pad relative to the attached body; the rotation preventing sleeve is installed outside the locking nut, and the rotation preventing sleeve is prevented from rotating The table is inserted into the rotation preventing hole of the rotation preventing pad, and the rotation preventing sleeve is axially restrained outside the locking nut; the nut rotation preventing portion and the rotation preventing portion of the rotation preventing sleeve cooperate with the restraining locking nut to rotate relative to the rotation preventing sleeve, and the rotation is stopped. The sleeve anti-rotation boss is rotated by the anti-rotation pad on the side facing the unscrewing direction of the lock nut, and the rotation of the anti-rotation sleeve is opposite to the rotation-stopping pad; the screw and the lock nut are non-rotatably coupled with the mother body, the body, and the rotation stop. The pads are mounted together.
一种紧固连接组件,还包括螺杆、锁紧螺母、;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;还包括止转套;锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;止转套为环状,在止转套上仅设有一个轴向的止转通孔,在止转通孔的孔壁上设有周向均匀排列、轴向的止转套内止转部;在止转套的一个端面上轴向凸设有与附体止转孔和/或止转垫止转孔配合、约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;螺杆和锁紧螺母螺纹连接,止转套安装在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转。A fastening connection assembly further includes a screw and a lock nut; the screw includes an external thread portion and a rotation preventing abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion; further includes a rotation preventing sleeve; and an outer circumference of the lock nut a circumferentially evenly arranged, axial nut rotation preventing portion; the rotation sleeve is annular, and only one axial rotation preventing through hole is provided in the rotation preventing sleeve, and a circumference is provided on the hole wall of the rotation preventing through hole a uniformly arranged, axially-rotating sleeve inner rotation preventing portion; axially convexly disposed on one end surface of the rotation preventing sleeve to cooperate with the auxiliary rotation preventing hole and/or the rotation preventing pad rotation preventing hole, and the restraining rotation preventing sleeve The anti-rotation sleeve rotation-rotating boss of the lock nut is rotated in the loose direction, and the resisting position of the anti-rotation sleeve anti-rotation boss is in the circumferential direction and toward the loosening direction of the lock nut; the screw and the lock nut are screwed, and the rotation sleeve is The nut is not mounted outside the lock nut; the nut rotation stop portion and the rotation stop portion of the rotation stop sleeve cooperate with the restriction lock nut to rotate relative to the rotation sleeve.
作为改进,止转套止转凸台的高度大于止转套内止转部的轴线长度。As an improvement, the height of the rotation preventing sleeve of the rotation preventing sleeve is larger than the axial length of the rotation preventing portion of the rotation preventing sleeve.
作为改进,还包括止转垫;在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;在止转垫朝向附体的端面上、轴向凸设有与附体止转孔配合的止转垫止转凸台;止转套止转凸台的高度小于或等于止转垫的厚度。 The improvement further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw; and the rotation preventing pad rotation hole that is matched with the rotation preventing projection boss of the rotation preventing sleeve; On the end surface of the body, an anti-rotation pad anti-rotation boss that cooperates with the attachment rotation-receiving hole is protruded in the axial direction; the height of the anti-rotation sleeve rotation-rotation boss is less than or equal to the thickness of the rotation-proof pad.
作为改进,还包括止转垫;在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;在止转垫背离止转套的一侧设有嵌入部或喷涂有摩擦颗粒;嵌入部为设置在止转垫的端面上的嵌入凸起、或为设置在止转垫外侧的嵌入边;止转套止转凸台的高度小于或等于止转垫的厚度。The improvement further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw; and the rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the backing pad is separated from the rotation preventing pad One side of the rotating sleeve is provided with an embedded portion or sprayed with friction particles; the embedded portion is an embedded protrusion provided on the end surface of the rotation preventing pad, or an embedded side disposed outside the rotation preventing pad; the rotation preventing sleeve The height is less than or equal to the thickness of the rotation pad.
作为改进,止转套包括环状的止转套本体,在止转套本体的轴心位置设有中心通孔,从止转套本体同侧轴向凸设有两个以上的弹性臂、弹性臂的端部径向向内形成限位部,在限位部的内侧面上设有止转套内止转部,限位部设有止转套内止转部的内侧面形成非闭合的止转通孔;止转套止转凸台与限位部同侧。As an improvement, the anti-rotation sleeve comprises an annular anti-rotation sleeve body, a central through-hole is arranged at the axial center of the anti-rotation sleeve body, and two or more elastic arms are elastically protruded from the same side of the anti-rotation sleeve body, and the elastic The end portion of the arm forms a limiting portion radially inwardly, and the inner side surface of the limiting portion is provided with a rotation preventing portion inside the rotation preventing sleeve, and the limiting portion is provided with an inner side surface of the rotation preventing portion of the rotation preventing sleeve to form a non-closed portion Stopping the through hole; the rotation preventing sleeve of the rotation sleeve is on the same side as the limiting portion.
作为改进,止转套还包括弹性臂;在止转套上设有与止转通孔连通、与弹性臂配合、用来容置弹性臂且为弹性臂变形提供变形空间的避空槽,止转通孔为非闭合的孔;弹性臂的一端与止转套背离止转套止转凸台的一侧相连,另一端朝向止转套设有止转套止转凸台的一侧、并在该端的端部径向向止转通孔的轴心设有限位部,限位部与止转通孔的轴线垂直,限位部径向凸出止转通孔;弹性臂与避空槽正对。As an improvement, the anti-rotation sleeve further includes a resilient arm; the anti-rotation sleeve is provided with a sluice groove that communicates with the anti-rotation through-hole, cooperates with the elastic arm, and is used for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm. The through hole is a non-closed hole; one end of the elastic arm is connected to a side of the rotation preventing sleeve that faces away from the rotation preventing boss of the rotation sleeve, and the other end is provided with one side of the rotation preventing sleeve of the rotation preventing sleeve A limiting portion is disposed at an axial end of the end portion of the end of the rotation preventing through hole, the limiting portion is perpendicular to the axis of the rotation preventing through hole, and the limiting portion radially protrudes the rotation preventing through hole; the elastic arm and the avoidance groove Right.
这种结构止转套,由于止转套内止转部设置在止转套上,而不是设置在弹性臂的限位部上,止转通孔不会因外力产生变形,止转效果好。In the structural rotation preventing sleeve, since the rotation preventing portion of the rotation preventing sleeve is disposed on the rotation preventing sleeve, instead of being disposed on the limiting portion of the elastic arm, the rotation preventing through hole is not deformed by the external force, and the rotation preventing effect is good.
作为改进,还包括限位件,一个止转套对应一个限位件;As an improvement, a limit member is further included, and one stop sleeve corresponds to one limit member;
限位件包括环状的限位件本体,在限位件本体的中心位置仅设有一个中心通孔,中心通孔的最小孔径大于止转通孔的最大孔径;还包括与限位件本体相连的两个以上的弹性臂,在弹性臂端部向中心通孔轴心方向设有与限位件本体平行的限位部,限位部径向凸出中心通孔;两个以上的限位部的最小内径小于止转通孔的最小内径;The limiting member comprises an annular limiting member body, and only one central through hole is arranged at a central position of the limiting member body, the minimum aperture of the central through hole is larger than the maximum aperture of the stopping through hole; and the limiting member body is further included Two or more elastic arms are connected, and a limiting portion parallel to the limiting member body is arranged at an axial end of the elastic arm toward the central through hole axial direction, and the limiting portion radially protrudes the central through hole; two or more limits The minimum inner diameter of the bit portion is smaller than the minimum inner diameter of the stop through hole;
在止转套上设有与弹性臂配合、用来容置弹性臂且为弹性臂变形提供变形空间的避空空间;将限位件与止转套安装在一起,弹性臂与止转套的避空空间配合;限位件的限位部径向凸出止转套的止转通孔;在与限位件本体平行的方向、弹性臂最大的变形量大于限位件的限位部凸出止转套的止转通孔的孔壁的长度。The anti-rotation sleeve is provided with a hollow space for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm; the limiting member and the rotation preventing sleeve are mounted together, and the elastic arm and the rotation preventing sleeve are arranged The space of the avoidance space cooperates; the limiting portion of the limiting member radially protrudes from the stopping through hole of the rotation preventing sleeve; in the direction parallel to the body of the limiting member, the maximum deformation amount of the elastic arm is larger than the limiting portion of the limiting member The length of the wall of the hole that stops the through hole of the sleeve.
作为改进,限位件的限位部均凸出限位件本体,限位件本体安装在止转套的一个端面上,弹性臂轴向伸入避空空间中,限位部径向伸入止转通孔中。As an improvement, the limiting portion of the limiting member protrudes from the limiting member body, and the limiting member body is mounted on one end surface of the rotation preventing sleeve, the elastic arm axially extends into the cutout space, and the limiting portion extends radially Stop turning in the through hole.
这种结构的止转限位组件,限位件可以为塑胶件,并通过将止转套放在成型塑胶件的模具中、在成型限位件时将限位件与止转套固定在一起。The rotation stop limit component of the structure, the limit member can be a plastic piece, and the limit piece is fixed with the rotation stop sleeve by placing the rotation stop sleeve in the mold of the molded plastic part and forming the limit piece. .
作为改进,在限位件的中心通孔的孔壁上设有两个以上的凹槽;弹性臂包括与限位件本体相连的第一弹性臂,沿第一弹性臂端部向中心通孔的轴心弯曲的曲面弹性臂,沿曲面弹性臂的端部再垂直向下形成的第二弹性臂,限位部设置在第二弹性臂的端部;第一弹性臂、曲面弹性臂、第二弹性臂形成U形弹性臂,U形弹性臂正对凹槽。As an improvement, two or more grooves are provided in the wall of the central through hole of the limiting member; the elastic arm includes a first elastic arm connected to the limiting member body, and the central through hole is formed along the end of the first elastic arm a curved elastic arm of the axial center, a second elastic arm formed vertically along the end of the curved elastic arm, and a limiting portion disposed at an end of the second elastic arm; the first elastic arm, the curved elastic arm, and the The two elastic arms form a U-shaped elastic arm, and the U-shaped elastic arms face the groove.
这种结构的止转限位组件,限位件可以为金属冲压件,并通过点焊将限位件与止转套固定在一起,成本较低。In the structure of the rotation stop limit component, the limit member can be a metal stamping part, and the limit piece and the rotation stop sleeve are fixed together by spot welding, and the cost is low.
作为改进,还包括限位件;限位件包括两个以上的弹性限位件;弹性限位件包括水平的限位部,垂直限位部弯折而成的第一弹性臂、沿第一弹性臂端部向限位部方向且平行限位部弯折、再背离限位部方向反向斜向上弯折、再反向斜向下弯折、再朝向限位部方向且平行限位部弯折而成的卡扣,再沿卡扣端部向下弯折而成的第二弹性臂,再沿第二弹性臂的端部背离限位部方向平行限位部弯折而成的抵挡部;The improvement further includes a limiting member; the limiting member comprises two or more elastic limiting members; the elastic limiting member comprises a horizontal limiting portion, and the first elastic arm bent by the vertical limiting portion is along the first The end of the elastic arm is bent toward the limiting portion and the parallel limiting portion is bent, and then bent obliquely upwards away from the limiting portion, and then bent obliquely downward, and then toward the limiting portion and the parallel limiting portion The bent buckle is further bent along the end of the buckle, and the second elastic arm is bent along the end of the second elastic arm away from the limit portion. unit;
在止转套上设有与弹性臂配合、用来容置弹性臂且为弹性臂变形提供变形空间的避空孔;The anti-rotation sleeve is provided with a hollow hole for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm;
将弹性限位件的限位部朝向止转套的轴心、并将弹性卡扣穿过止转套上的避空通孔,通过弹性限位件一侧被卡扣抵挡、一侧被抵挡部抵挡将弹性限位件与限位件安装在一起,弹性限位件的限位部径向凸出止转套的止转通孔的孔壁,弹性限位件的两弹性臂之间的距离大于弹性限位件的限位部凸出止转套的止转通孔的孔壁的长度。The limiting portion of the elastic limiting member is directed toward the axial center of the rotation preventing sleeve, and the elastic buckle is passed through the hollow through hole on the rotation preventing sleeve, and is buckled by one side of the elastic limiting member, and one side is resisted The portion of the elastic limiting member and the limiting member are mounted together, and the limiting portion of the elastic limiting member radially protrudes from the hole wall of the rotation preventing through hole of the rotation preventing sleeve, and between the elastic arms of the elastic limiting member The distance from the limiting portion of the elastic limiting member protrudes from the length of the hole wall of the rotation preventing through hole of the rotation preventing sleeve.
这种结构的止转限位组件,弹性限位件可以为金属冲压件,弹性限位件直接扣在止转套上将弹性限位件与止转套安装在一起,成本低,弹性限位件相对止转套还可拆卸,而且还大大减少限位件的材料成本。The anti-rotation limit component of the structure, the elastic limiting member can be a metal stamping part, and the elastic limiting piece is directly fastened on the anti-rotation sleeve to install the elastic limiting piece and the anti-rotation sleeve together, the cost is low, and the elastic limit is The relative rotation sleeve can also be disassembled, and the material cost of the limiting member is greatly reduced.
作为方案三至六的改进,紧固连接组件还包括限位件;在锁紧螺母上设有卡槽;限位件为卡环,卡环包括非闭合的环状的卡环本体,在卡环本体的外周设有三条以上径向凸出卡环本体的限位凸条;卡环本体的内周与锁紧螺母的卡槽底部的外周配合;限位凸条的外径大于止转套的止转通孔的最大孔径;卡环安装在卡槽内对止转套背离螺母止转凸部的一侧轴向限位。As an improvement of the schemes three to six, the fastening connection assembly further comprises a limiting member; a locking groove is arranged on the locking nut; the limiting member is a snap ring, and the snap ring comprises a non-closed annular snap ring body on the card The outer circumference of the ring body is provided with three or more limiting ribs protruding from the body of the snap ring; the inner circumference of the snap ring body is matched with the outer circumference of the bottom of the locking nut; the outer diameter of the limiting rib is larger than the rotation sleeve The maximum aperture of the through-opening hole; the snap ring is mounted in the slot to axially limit the side of the anti-rotation sleeve away from the nut rotation preventing protrusion.
这种结构的卡环,卡环本体不需要特别大就可以对止转套限位,限位效果好。The snap ring of the structure, the snap ring body does not need to be particularly large, and can limit the stop sleeve, and the limit effect is good.
作为方案七至十二的改进,锁紧螺母的外周设与限位部配合的限位部容置空间,在限位 部容置空间朝向螺杆的止转抵挡部的面为用来抵挡限位部的抵挡面;止转套安装在锁紧螺母外,弹性臂通过弹性变形使限位部插入限位部容置空间内、并被限位部容置空间的抵挡面抵挡、对止转套背离外螺纹部的一侧轴向限位。As an improvement of the schemes 7 to 12, the outer circumference of the lock nut is provided with a limiting portion accommodating space matched with the limiting portion, at the limit The surface of the accommodating space facing the rotation preventing abutting portion of the screw is abutting surface for resisting the limiting portion; the rotation preventing sleeve is installed outside the locking nut, and the elastic arm is elastically deformed to insert the limiting portion into the limiting portion accommodating space. The inner surface is restrained by the abutting surface of the accommodating space of the limiting portion, and is axially restricted to the side of the rotation preventing sleeve facing away from the external thread portion.
作为方案三至六的改进,在螺杆的止转抵挡部朝向外螺纹部的端面上轴向凸设有与用来约束锁紧螺母螺杆相对母体旋转的止转凸台。As a modification of the third to sixth embodiments, a rotation preventing boss for restraining the rotation of the lock nut screw relative to the parent body is axially convexly formed on the end surface of the screw rotation preventing portion toward the external thread portion.
一种包括方案三、四、七至十二任意一项的紧固连接组件的紧固连接结构,还包括母体、附体;母体、附体上均设有与螺杆的外螺纹部配合的通孔;A fastening structure for a fastening joint assembly comprising any one of the three, four, seven or twelve aspects, further comprising a base body and an attachment body; the base body and the attachment body are respectively provided with a joint with the external thread portion of the screw hole;
紧固连接组件还包括止转垫;在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;止转套止转凸台的高度小于或等于止转垫的厚度;The fastening connection assembly further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw, and the rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the rotation preventing sleeve is stopped The height of the boss is less than or equal to the thickness of the rotation pad;
螺杆穿过母体上的通孔、附体上的通孔、止转垫的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与母体安装在一起;在止转垫背离止转套的一侧设有嵌入部,附体的硬度小于止转垫的嵌入部的硬度,止转垫的嵌入部嵌入附体内约束止转垫相对附体旋转;或在止转垫背离止转套的一侧喷涂有摩擦颗粒,止转垫的摩擦颗粒与附体间产生足够大的摩擦力约束止转垫相对附体旋转;或止转垫通过固定胶固定在附体上约束止转垫相对附体旋转;止转套安装在锁紧螺母外,止转套止转凸台插入止转垫止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被止转垫止转孔抵挡约束止转套相对止转垫旋转;螺杆、锁紧螺母不可旋转地与母体、附体、止转垫安装在一起。The screw passes through the through hole on the female body, the through hole on the attached body, and the through hole of the rotation preventing pad is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body; the side of the rotation preventing pad facing away from the rotation preventing sleeve An inserting portion is provided, the hardness of the attached body is smaller than the hardness of the embedded portion of the rotation preventing pad, and the embedded portion of the rotation preventing pad is embedded in the attached body to restrain the rotation of the rotation preventing pad relative to the attached body; or spraying the side of the rotation preventing pad away from the rotation preventing sleeve The friction particles, the friction particles of the rotation preventing pad and the attached body generate a sufficient friction force to restrain the rotation of the rotation preventing pad relative to the attached body; or the rotation preventing pad is fixed on the attached body by the fixing glue to restrain the rotation of the rotation preventing pad relative to the attached body; The rotation sleeve is installed outside the lock nut, the rotation sleeve of the rotation sleeve is inserted into the rotation preventing hole of the rotation preventing pad, and the rotation preventing sleeve is axially restrained outside the lock nut; the nut rotation preventing portion and the rotation preventing sleeve are inside The rotation stop portion cooperates with the constraint lock nut to rotate relative to the rotation stop sleeve, and the rotation sleeve of the rotation stop sleeve is rotated by the rotation preventing hole of the rotation preventing pad on the side facing the loosening direction of the locking nut, and the rotation of the rotation preventing sleeve relative to the rotation preventing pad; The screw and the lock nut are non-rotatably mounted on the mother body, the body, and the rotation preventing pad. Play.
作为改进,在螺杆的止转抵挡部朝向外螺纹部的端面上轴向凸设有与用来约束锁紧螺母螺杆相对母体旋转的止转凸台;止转垫还包括螺杆止转垫,螺杆止转垫上的止转垫止转孔与螺杆的止转凸台配合;在螺杆止转垫朝向母体的一侧设有嵌入部,母体的硬度小于螺杆止转垫的嵌入部的硬度,螺杆止转垫的嵌入部嵌入母体内约束螺杆止转垫相对母体旋转;或在螺杆止转垫朝向母体的一侧喷涂有摩擦颗粒,螺杆止转垫的摩擦颗粒与母体间产生足够大的摩擦力约束螺杆止转垫相对母体旋转;或螺杆止转垫通过固定胶固定在母体上约束螺杆止转垫相对母体旋转;螺杆的止转凸台插入螺杆止转垫的止转垫止转孔内约束螺杆相对螺杆止转垫旋转;螺杆不可旋转地与母体安装在一起。As an improvement, a non-rotation boss for restraining the rotation of the lock nut screw relative to the base body is axially protruded on the end surface of the screw rotation preventing portion toward the external thread portion; the rotation preventing pad further includes a screw rotation preventing pad, the screw The rotation preventing hole on the rotation preventing pad is matched with the rotation preventing boss of the screw; the inserting portion is provided on the side of the screw rotation preventing pad facing the female body, and the hardness of the female body is smaller than the hardness of the embedded portion of the screw rotation preventing pad, and the screw is stopped. The embedded portion of the rotating pad is embedded in the female body to restrain the rotation of the screw rotation preventing pad relative to the mother body; or the frictional particles are sprayed on the side of the screw rotation preventing pad facing the mother body, and the frictional particles of the screw rotation preventing pad and the mother body generate a sufficient frictional constraint The screw rotation preventing pad rotates relative to the mother body; or the screw rotation preventing pad is fixed on the mother body by the fixing glue to restrain the screw rotation preventing pad from rotating relative to the mother body; the rotation preventing protrusion of the screw is inserted into the rotation preventing pad of the screw rotation preventing pad and the binding screw in the rotation preventing hole Rotating relative to the screw stop pad; the screw is non-rotatably mounted to the parent body.
一种包括方案三、四、七至十二任意一项的紧固连接组件的紧固连接结构,还包括母体、附体;母体与附体为一体式结构,形成带断口的环形体;在环形体的断口的两端分别同向设有相对的第一安装部与第二安装部;在第一安装部、第二安装部上均设有与螺杆的外螺纹部配合的通孔;螺杆的外螺纹部穿过第一安装部上的通孔、第二安装部上的通孔与锁紧螺母螺纹连接,螺杆、锁紧螺母将第一安装部和第二安装部安装在一起,螺杆不可旋转地与第一安装部安装在一起;第一安装部上背离第二安装部的一侧设有与止转套止转凸台间隙配合的第一安装部止转孔;止转套安装在锁紧螺母外,止转套止转凸台插入第一安装部止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被第一安装部止转孔抵挡约束止转套相对第一安装部旋转;螺杆、锁紧螺母不可旋转地与第二安装部、第一安装部安装在一起。A fastening structure for a fastening joint assembly comprising any one of the three, four, seven or twelve aspects, further comprising a base body and an attachment body; the base body and the attachment body being an integral structure, forming an annular body with a fracture; The two ends of the fracture of the annular body are respectively provided with the opposite first mounting portion and the second mounting portion; the first mounting portion and the second mounting portion are respectively provided with through holes that cooperate with the external thread portion of the screw; The external thread portion is threadedly connected to the lock nut through the through hole in the first mounting portion and the through hole in the second mounting portion, and the screw and the lock nut mount the first mounting portion and the second mounting portion together, the screw Non-rotatably mounted together with the first mounting portion; a side of the first mounting portion facing away from the second mounting portion is provided with a first mounting portion stop hole that is clearance-fitted with the rotation preventing sleeve of the rotation preventing sleeve; Outside the lock nut, the rotation sleeve of the rotation sleeve is inserted into the rotation hole of the first mounting portion, and the rotation sleeve is axially restrained outside the lock nut; the rotation stop portion of the nut and the rotation stop portion of the rotation sleeve Cooperating with the restraining lock nut relative to the rotation sleeve, the rotation sleeve of the rotation sleeve is facing Side of the nut loosening direction of rotation stopping portion is a first mounting hole resist constraint detent sleeve rotating relative to the first mounting portion; a screw, locking nut is non-rotatably with the second mounting portion, a first mounting portion mounted together.
一种曲轴连杆机构,包括曲轴、连杆组、紧固连接组件;连杆组包括连杆体、连杆大头盖、连杆大头轴瓦;紧固连接组件包括螺杆、锁紧螺母;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;连杆体包括连杆大头和连杆小头,连杆大头、连杆大头盖上均设有与螺杆的外螺纹部配合的通孔;紧固连接组件还包括止转套、限位件;锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;在连杆大头背离连杆大头盖的一侧设有与止转套的止凸部配合的大头止转孔;连杆大头轴瓦合抱在曲轴外,连杆大头和连杆大头盖合抱在连杆大头轴瓦外;螺杆的外螺纹部依次穿过连杆大头的通孔、连杆大头盖上的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与连杆大头安装在一起,螺杆、锁紧螺母将连杆大头和连杆大头盖安装在一起;止转套安装在锁紧螺母外,止转套止转凸台插入大头止转孔中,限位件安装在螺杆上或锁紧螺母上对止转套背离止转套止转凸部的一侧轴向限位;螺母止转部与止转套内止转部配合约束止转套相对锁紧螺母相旋转,止转套止转凸台在锁紧螺母的旋松方向被大头止转孔抵挡约束止转套相对连杆大头旋转,连杆大头盖和连杆大头无相对旋转,螺杆、锁紧螺母不可旋转地与连杆大头盖和连杆大头安装在一起。A crankshaft linkage mechanism comprises a crankshaft, a connecting rod set and a fastening connection assembly; the connecting rod set comprises a connecting rod body, a connecting rod big head cover and a connecting rod big head bearing bush; the fastening connection assembly comprises a screw and a lock nut; the screw comprises The external thread portion and the rotation preventing abutting portion, the rotation preventing abutting portion radially protrudes the external thread portion; the connecting rod body comprises a connecting rod big head and a connecting rod small head, and the connecting rod big head and the connecting rod big head cover are respectively provided with external threads of the screw The through hole of the joint; the fastening connection assembly further comprises a rotation preventing sleeve and a limiting member; the outer circumference of the locking nut is provided with a circumferentially evenly arranged, axial nut rotation preventing portion; and only one shaft is arranged on the rotation preventing sleeve a stop-stop hole, a hole-stopping portion of the rotation-stopping hole is provided with a rotation-stopping portion of the rotation-proof sleeve; and a restraining sleeve is axially convexly disposed on one end surface of the rotation-proof sleeve The anti-rotation sleeve rotation preventing boss of the locking nut is rotated in the loose direction, and the resisting position of the rotation preventing projection boss is in the circumferential direction and toward the loosening direction of the locking nut; and the large end of the connecting rod is away from the connecting rod big head cover The side is provided with a large head rotation hole that cooperates with the convex protrusion of the rotation preventing sleeve; Outside the crankshaft, the big end of the connecting rod and the big head of the connecting rod are hug outside the large shaft of the connecting rod; the external thread of the screw passes through the through hole of the big end of the connecting rod, and the through hole on the big head cover of the connecting rod is screwed with the locking nut, the screw Non-rotatably mounted with the big end of the connecting rod, the screw and the lock nut are used to install the connecting rod big head and the connecting rod big head cover; the rotation preventing sleeve is installed outside the locking nut, and the rotation preventing sleeve is inserted into the big head to stop In the hole, the limiting member is mounted on the screw or the locking nut to axially limit the one side of the rotation preventing sleeve away from the rotation preventing convex portion of the rotation preventing sleeve; the nut rotation preventing portion and the rotation preventing portion of the rotation preventing sleeve are restrained The rotary sleeve rotates relative to the lock nut, and the rotation sleeve of the rotation sleeve is locked by the large rotation hole in the loosening direction of the lock nut, and the rotation of the rotation sleeve is opposite to the large end of the connecting rod, and the big head cover and the connecting rod have no relative Rotating, the screw and the lock nut are non-rotatably mounted together with the connecting rod big head cover and the connecting rod big head.
一种紧固连接组件,包括锁紧螺母;还包括U形的螺纹连接件、止转套;A fastening connection assembly comprising a lock nut; further comprising a U-shaped threaded connection member and a rotation preventing sleeve;
螺纹连接件包括U形的螺纹连接件本体,在螺纹连接件本体的两端均设有外螺纹部,外螺纹 部的外经小于螺纹连接件本体的外经;每端的外螺纹部均对应一个锁紧螺母和止转套;The threaded connector comprises a U-shaped threaded connector body, and external threaded portions are provided at both ends of the threaded connector body, external threads The outer diameter of the portion is smaller than the outer diameter of the threaded connector body; the external thread portion of each end corresponds to a lock nut and the rotation sleeve;
锁紧螺母的外周设有周向均匀排列的螺母止转部,轴心位置设有与外螺纹部配合的螺纹孔;在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;The outer circumference of the lock nut is provided with a circumferentially evenly arranged nut rotation stop portion, and the shaft center position is provided with a threaded hole that cooperates with the external thread portion; and only one axial rotation stop through hole is provided on the rotation sleeve, and the rotation is stopped. The hole wall of the through hole is provided with a rotation preventing sleeve inner rotation portion matched with the nut rotation preventing portion; and an end surface of the rotation preventing sleeve is axially convexly provided with the restraining rotation preventing sleeve rotating toward the loosening direction of the lock nut The sleeve rotation stop boss, the resisting position of the rotation sleeve of the rotation sleeve is in the circumferential direction and toward the loosening direction of the lock nut;
螺纹连接件两端的外螺纹部分别与相应的锁紧螺母螺纹连接,止转套的止转套内止转部安装在锁紧螺母的螺母止转部外,止转套被轴向限位在锁紧螺母的螺母止转部外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转。The external threaded portions at the two ends of the threaded connecting member are respectively screwed with the corresponding locking nut, and the rotation preventing portion of the rotation preventing sleeve of the rotation preventing sleeve is installed outside the nut rotation preventing portion of the lock nut, and the rotation preventing sleeve is axially restricted at The nut of the lock nut is outside the rotation stop portion; the nut rotation stop portion and the rotation stop portion of the rotation stop sleeve cooperate to restrain the rotation of the lock nut relative to the rotation sleeve.
一种包含方案二十的紧固连接组件的紧固连接结构,紧固连接结构还包括被连接件;被连接件上设有两个与螺纹连接件配合的通孔,在被连接件上朝向止转套的面上设有与止转套止转凸台配合的止转孔;螺纹连接件两端的外螺纹部分别穿过被连接件上相应的通孔与锁紧螺母螺纹连接,被连接件上的两个通孔约束螺纹连接件相对被连接件旋转,螺纹连接件本体轴向抵挡被连接件一侧,锁紧螺母轴向抵挡被连接件另一侧,螺纹连接件、锁紧螺母与被连接件安装在一起;止转套的止转套内止转部安装在锁紧螺母的螺母止转部外并被轴向限位,止转套止转凸台插入被连接件止转孔内;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被被连接件止转孔抵挡约束止转套相对被连接件旋转;螺纹连接件与锁紧螺母、被连接件不可旋转地安装在一起。A fastening connection structure comprising a fastening connection assembly of a twenty-sixth aspect, the fastening connection structure further comprising a connected piece; the connected piece is provided with two through holes which cooperate with the threaded connecting piece, and are oriented on the connected piece The surface of the rotation sleeve is provided with a rotation preventing hole that cooperates with the rotation preventing protrusion of the rotation sleeve; the external thread portions of the two ends of the threaded connecting member are respectively threadedly connected with the lock nut through the corresponding through holes of the connected member, and are connected The two through holes on the piece constrain the threaded connection member to rotate relative to the connected member, the threaded connector body axially resists the side of the connected member, the lock nut axially resists the other side of the connected member, the threaded connecting member and the lock nut Installed together with the connected member; the rotation preventing portion of the rotation preventing sleeve is installed outside the nut rotation preventing portion of the lock nut and is axially restrained, and the rotation preventing sleeve is inserted into the connected member to stop rotation The inside of the hole; the nut rotation preventing portion and the rotation preventing portion of the rotation preventing sleeve cooperate with the restriction lock nut to rotate relative to the rotation preventing sleeve, and the rotation preventing projection boss is stopped by the connecting member on the side facing the loosening direction of the locking nut The hole resists the rotation of the rotation preventing sleeve relative to the connected member; Locknut member, the connection member is mounted non-rotatably together.
本发明的有益效果是:The beneficial effects of the invention are:
既要阻止螺纹副朝旋松方向旋转防松,又要保持机械螺纹连接的方便、快速、可靠地可拆卸性,是人们一直长期以来致力解决却没有彻底解决的技术难题。It is a technical problem that people have long been working hard to solve but not completely solve the problem of preventing the thread pair from rotating and loosening in the direction of loosening, and maintaining the convenient, fast and reliable detachability of the mechanical thread connection.
本发明通过止转套安装在锁紧螺母外、止转套止转凸台插入附体止转孔或垫片止转孔内,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被附体止转孔或垫片止转孔抵挡约束止转套相对附体旋转;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转;这样螺杆、锁紧螺母不可旋转地与母体、附体安装在一起。螺杆、锁紧螺母无法转动,螺杆和锁紧螺母的螺纹连接就不会因锁紧螺母朝旋松方向旋转而松脱,使螺杆和锁紧螺母保持在最初需要的锁紧位置,螺杆和锁紧螺母的螺纹连接的锁紧力在使用过程中基本无变化;即使采用普通的螺杆和锁紧螺母紧固连接母体和附体,在剧烈震动、高温等恶劣环境下,螺杆和锁紧螺母的螺纹连接的锁紧力在使用过程中基本无变化;因此达到最好的锁紧效果,能有效避免螺纹连接失效。The invention is installed outside the lock nut by the rotation preventing sleeve, and the rotation preventing protrusion of the rotation sleeve is inserted into the rotation stop hole of the attachment body or the rotation stop hole of the gasket, and the rotation preventing projection of the rotation sleeve is in the direction of the loosening of the lock nut. One side of the body stop hole or the washer rotation hole resists the rotation of the restraining sleeve relative to the body; the nut rotation stop and the rotation stop of the rotation sleeve cooperate with the constraint lock nut to rotate relative to the rotation sleeve; thus the screw, The lock nut is non-rotatably mounted to the base body and the attachment body. The screw and the lock nut cannot be rotated, and the threaded connection of the screw and the lock nut will not be loosened due to the rotation of the lock nut in the unscrewing direction, so that the screw and the lock nut are kept in the originally required locking position, the screw and the lock The locking force of the threaded connection of the tightening nut is basically unchanged during use; even if the common screw and the lock nut are used to fasten the connection between the base body and the attached body, the screw and the lock nut are in a harsh environment such as severe vibration and high temperature. The locking force of the threaded connection is basically unchanged during use; therefore, the best locking effect is achieved, and the threaded connection failure can be effectively avoided.
止转套止转凸台的高度大于止转套内止转部的轴线长度,当紧固连接结构的止转套安装在锁紧螺母外时,在止转套的止转套内止转部未与锁紧螺母的螺母止转部接触前,止转套止转凸台的抵挡位置在朝向锁紧螺母旋松方向能与附体止转孔或垫片止转孔接触,从而使插入附体止转孔或垫片止转孔的止转套止转凸台的抵挡位置靠近附体止转孔或垫片止转孔,或与附体止转孔或垫片止转孔接触。The height of the rotation preventing boss of the rotation preventing sleeve is greater than the axial length of the rotation preventing portion of the rotation preventing sleeve. When the rotation preventing sleeve of the fastening structure is installed outside the locking nut, the rotation preventing portion of the rotation preventing sleeve of the rotation preventing sleeve Before the nut rotation preventing portion of the lock nut is not in contact, the resisting position of the rotation preventing sleeve of the rotation sleeve can be in contact with the rotation hole of the attachment body or the rotation preventing hole of the gasket toward the loosening direction of the lock nut, thereby inserting The anti-rotation sleeve of the body stop hole or the washer rotation stop hole is located close to the attachment rotation hole or the gasket rotation stop hole, or is in contact with the attachment rotation hole or the gasket rotation prevention hole.
锁紧螺母要松脱,必须朝旋松方向旋转,由于止转套止转凸台的抵挡位置靠近附体止转孔或垫片止转孔,或与附体止转孔接触,锁紧螺母一朝旋松方向旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧即被附体止转孔抵挡,因此即使止转套止转凸台与附体止转孔间隙配合,止转套也无法朝旋松方向旋转或朝旋松方向仅能旋转一点点、止转套止转凸台即被附体止转孔抵挡,止转套无法旋转约束锁紧螺母无法反转,能有有效避免锁紧螺母朝旋松方向旋转松脱,止转效果好。The lock nut should be loose and must be rotated in the unscrewing direction. Because the resisting position of the anti-rotation sleeve of the anti-rotation boss is close to the anti-rotation hole or the anti-rotation hole of the anti-rotation sleeve, or the contact with the anti-rotation hole of the attachment, the lock nut When rotating in the unscrewing direction, the rotation preventing boss of the rotation preventing sleeve is resisted by the attachment rotation preventing hole on the side facing the loosening direction of the lock nut, so even the gap between the rotation preventing projection and the attachment rotation preventing hole of the rotation preventing sleeve Cooperate, the anti-rotation sleeve can not be rotated in the direction of loosening or can only be rotated a little in the direction of loosening, and the anti-rotation boss of the rotating sleeve is resisted by the anti-rotation hole of the rotating body, and the locking sleeve cannot be rotated and the locking nut cannot be reversed. Turn, can effectively prevent the lock nut from rotating loosely in the direction of loosening, and the rotation stop effect is good.
螺母止转部周向均匀排列在锁紧螺母的外,这样螺母止转部和与之配合的止转套内止转部就可以至少为6个以上,止转套内止转部的个数为螺母止转部的整数倍,止转套与锁紧螺母配合的结构可为齿轮形、花键形或正多边形等,从而保证了螺纹连接的预紧力满足使用要求,锁紧效果好。如果止转套止转凸台的抵挡位置靠近附体止转孔或垫片止转孔,则止转效果没有那么好。The nut rotation preventing portion is evenly arranged outside the lock nut, so that the nut rotation preventing portion and the rotation preventing portion in the rotation preventing sleeve can be at least six or more, and the number of the rotation preventing portion in the rotation preventing sleeve For the integral multiple of the nut rotation stop part, the structure of the rotation stop sleeve and the lock nut can be gear shape, spline shape or regular polygon, etc., thereby ensuring that the pre-tightening force of the thread connection meets the use requirement, and the locking effect is good. If the resisting position of the anti-rotation sleeve anti-rotation boss is close to the attachment rotation hole or the gasket rotation prevention hole, the rotation prevention effect is not so good.
在止转套上仅设有一个止转通孔,紧固连接组件的适用范围广,不受母体和附体上用来安装螺杆的孔的孔距限制。这种紧固连接结构,结构更紧凑,更符合通用的标准件紧固件的安装和使用习惯,可以设计成标准件。Only one anti-rotation through hole is provided on the anti-rotation sleeve, and the fastening connection assembly has a wide application range and is not limited by the hole distance of the hole for mounting the screw on the base body and the attachment body. The fastening structure is more compact and more conformable to the installation and use habits of the common standard fasteners, and can be designed as standard parts.
在止转套上设有止转套止转凸台,在附体上设有附体止转通孔,通过止转套止转凸台与附体止转孔配合来约束止转套相对附体,只需在附体上加工或成型与止转套止转凸台配合的附体止转孔,附体止转孔一般为圆孔,加工成本低。The rotation sleeve is provided with a rotation preventing sleeve of the rotation preventing sleeve, and the auxiliary body is provided with a rotation preventing through hole, and the rotation preventing protrusion of the rotation preventing sleeve cooperates with the auxiliary rotation preventing hole to restrain the rotation of the rotation preventing sleeve The body only needs to be processed or formed on the attached body to form an anti-rotation hole with the anti-rotation sleeve anti-rotation boss. The anti-rotation hole of the attachment body is generally a round hole, and the processing cost is low.
用止转垫片止转,在止转垫片背离止转套的一侧设有嵌入部,止转垫片的嵌入部嵌入附体内约束止转垫片相对附体旋转,不需要在附体上加工与止转套止转凸台配合的孔,附体上不需要任何约束止转套旋转的止转结构,止转垫片可做成标准件,因而大大降低成本。在拆 卸紧固连接组件时,止转垫不需与附体分离,因而可确保止转垫片的嵌入部嵌入附体内约束止转垫相对附体旋转。The rotation stop is stopped by the rotation preventing washer, and the inserting portion is provided on the side of the rotation preventing washer facing away from the rotation preventing sleeve, and the embedded portion of the rotation preventing washer is embedded in the attachment body to restrain the rotation of the rotation preventing washer relative to the attached body, and does not need to be attached The upper working hole is matched with the rotation preventing sleeve of the rotation preventing sleeve, and the rotation preventing structure for restraining the rotation of the rotating sleeve is not required on the attached body, and the rotation preventing washer can be made into a standard part, thereby greatly reducing the cost. Demolition When the fastening assembly is unloaded, the rotation preventing pad does not need to be separated from the attachment body, thereby ensuring that the insertion portion of the rotation preventing washer is embedded in the attachment body to restrain the rotation of the rotation preventing pad relative to the attachment body.
用止转垫片止转,在止转垫片背离止转套的一侧设有垫片止转凸台,垫片止转凸台插入附体止转孔内约束止转垫片相对附体旋转,止转套止转凸台与垫片止转孔配合来约束止转套相对附体旋转,只需在附体上加工或成型与垫片止转凸台配合的附体止转孔,附体止转孔一般为圆孔,加工成本低。The rotation stop is stopped by the rotation preventing washer, and the gasket rotation preventing boss is arranged on the side of the rotation preventing washer facing away from the rotation preventing sleeve, and the gasket rotation preventing boss is inserted into the attachment rotation preventing hole and the opposite rotation preventing washer is oppositely attached. Rotating, the rotation sleeve and the washer rotation preventing hole cooperate with the gasket rotation preventing hole to restrain the rotation of the rotation sleeve relative to the attachment body, and only need to process or form the attachment rotation hole with the gasket rotation protrusion boss on the attachment body, The body stop hole is generally a round hole, and the processing cost is low.
用止转垫片止转,止转垫片通过固定胶粘在附体上约束止转垫片相对附体旋转,不需要在附体上加工与止转套止转凸台配合的孔,附体上不需要任何约束止转套旋转的止转结构,止转垫片可做成标准件,因而大大降低成本,对附体的材料也无限制,只需附体表面平整即可,成本特别低,也不会破坏附体表面。在拆卸紧固连接组件时,止转垫不需与附体分离。The anti-rotation pad is used to stop the rotation, and the anti-rotation pad is fixed on the attached body to restrain the rotation of the anti-rotation pad relative to the attached body, and it is not necessary to process the hole matched with the anti-rotation sleeve anti-rotation boss on the attached body, There is no need for any anti-rotation structure that restrains the rotation of the rotation sleeve. The anti-rotation gasket can be made into standard parts, thus greatly reducing the cost, and there is no restriction on the material of the attachment body, only the surface of the attachment body is flat, and the cost is special. Low, it will not destroy the surface of the attached body. When the fastening connection assembly is removed, the rotation preventing pad does not need to be separated from the attachment body.
止转套止转凸台与附体止转孔或垫片止转孔配合约束止转垫相对附体旋转,不需要在止转套外周设有止转套外止转部,不需要与止转套外周的止转套外止转部配合的止转孔来约束止转套相对附体旋转;因而不需要在附体上加工与止转套配合的止转孔,也不需要一个与附体不可旋转地安装在一起、设有与止转套外止转部配合的止转孔的止转件,也不需要在止转套上设计两个以上的止转通孔来约束止转套旋转。相对在附体上加工设有与止转套外止转部配合的止转孔,加工成本大大降低。相对用与附体不可旋转地止转件来约束止转套相对附体旋转,节省了止转件,省去了在安装现场安装止转件,节省了安装时间成本,大大降低了成本。The rotation sleeve of the rotation stop sleeve and the rotation stop hole of the attachment body or the rotation stop hole of the gasket cooperate with the rotation of the restraining rotation rotation pad to the opposite body, and it is not necessary to provide a rotation stop outer rotation portion on the outer circumference of the rotation prevention sleeve, and the rotation stop is not required. The rotation preventing hole of the outer rotation preventing sleeve of the outer sleeve of the rotary sleeve is used to restrain the rotation of the rotation preventing sleeve relative to the attachment body; therefore, it is not necessary to process the rotation preventing hole with the rotation preventing sleeve on the attachment body, and it is not required to attach The body is non-rotatably mounted together, and is provided with a rotation stop for the rotation preventing hole of the rotation preventing sleeve outer rotation portion, and it is not necessary to design two or more rotation preventing through holes on the rotation preventing sleeve to restrain the rotation preventing sleeve Rotate. Compared with the anti-rotation hole which is matched with the outer rotation preventing portion of the anti-rotation sleeve, the processing cost is greatly reduced. Relatively using the non-rotatable rotation stop member to restrain the rotation of the rotation sleeve relative to the attachment body, the rotation stop member is saved, the installation of the rotation stop member at the installation site is omitted, the installation time cost is saved, and the cost is greatly reduced.
止转套与锁紧螺母之间一般为间隙配合,便于止转套的安装和取出。由于止转套没有安装在止转孔中,完全外露,止转套的安装方便、快速;止转套的拆卸即使不借助拆卸工具也能很方便地拆卸,拆卸方便、快速、可靠。The gap between the sleeve and the lock nut is generally a clearance fit, which facilitates the installation and removal of the sleeve. Since the anti-rotation sleeve is not installed in the anti-rotation hole and is completely exposed, the installation of the anti-rotation sleeve is convenient and fast; the disassembly of the anti-rotation sleeve can be easily disassembled without the aid of the disassembly tool, and the disassembly is convenient, fast and reliable.
止转套上设有弹性臂,在弹性臂的端部设有限位部,不再需要限位件对止转套限位。在限位件上设有弹性臂,在弹性臂的端部设有限位部;在工厂就将限位件和止转套安装在一起,并可做成标准件,在工厂,由于可实现自动化作业,因此安装效率高。采用设有弹性臂的止转套和包括设有弹性臂的限位件的紧固连接组件,在螺杆和锁紧螺母的安装现场,不再需要安装限位件,因此安装快捷,效率高。The anti-rotation sleeve is provided with a resilient arm, and a limiting portion is arranged at the end of the elastic arm, and the limiting member is no longer required to limit the anti-rotation sleeve. A resilient arm is arranged on the limiting member, and a limiting portion is arranged at the end of the elastic arm; the limiting member and the rotation preventing sleeve are installed together at the factory, and can be made into standard parts, which can be automated in the factory Work, so the installation efficiency is high. The anti-rotation sleeve provided with the elastic arm and the fastening connection assembly including the limiting member provided with the elastic arm eliminate the need to install the limiting member at the installation site of the screw and the lock nut, so the installation is quick and the efficiency is high.
母体与附体为一体式结构,形成带断口的环形体,这种机构的紧固连接结构,用来连接其它零件时,由于螺杆和锁紧螺母相对第一安装部和第二安装部不会旋转,即使在紧固连接结构承受很大地力、或紧固连接结构处于剧烈震动的环境等,也不会因为锁紧螺母朝旋松方向旋转导致螺纹连接失效,确保螺杆和锁紧螺母可靠地将第二安装部、第一安装部安装在一起。The mother body and the attached body are a one-piece structure, forming an annular body with a fracture. The fastening structure of the mechanism is used for connecting other parts, since the screw and the lock nut are not opposed to the first mounting portion and the second mounting portion. Rotation, even in the environment where the fastening structure is subjected to a large force or the fastening structure is in a severe vibration, the screw connection will not be broken due to the rotation of the lock nut in the loosening direction, and the screw and the lock nut are reliably ensured. The second mounting portion and the first mounting portion are mounted together.
采用本发明的紧固连接组件的曲轴连杆机构,通过紧固连接组件固定在一起的连杆体和连杆大头盖,由于锁紧螺母相对连杆体、螺杆大头盖不会旋转,因此即使连杆体承受很大地力、或曲轴连杆机构处于剧烈震动的环境等,也不会因为锁紧螺母朝旋松方向旋转导致螺纹连接失效,这样确保连杆体和连杆大头盖可靠地安装在一起,防止事故发生。The crankshaft link mechanism using the fastening connection assembly of the present invention, the link body and the connecting rod big cover fixed together by the fastening connection assembly, even if the lock nut does not rotate relative to the link body and the screw head cover, The connecting rod body is subjected to a large force, or the crankshaft linkage mechanism is in a vibrating environment, and the threaded connection is not broken due to the rotation of the lock nut in the loosening direction, so that the connecting rod body and the connecting rod big head cover are reliably installed. Together, prevent accidents.
在止转套上设有止转孔,在附体上设有与止转套的止转孔配合的止转凸台,是本发明的一个简单的等同置换,当然也属于本发明的保护范围。将止转凸台设置在附体上,除非是注塑件、铸造件等,在成型附体时就一起成型止转凸台,若加工止转凸台,成本特别高,故在本专利中不再描述。A rotation preventing hole is provided on the rotation preventing sleeve, and a rotation preventing boss which is matched with the rotation preventing hole of the rotation preventing sleeve is provided on the attachment body, which is a simple equivalent replacement of the present invention, and of course also belongs to the protection scope of the present invention. . The anti-rotation boss is disposed on the attached body, unless it is an injection molded part, a cast part, etc., and the anti-rotation boss is formed together when the attached body is formed. If the anti-rotation boss is processed, the cost is particularly high, so it is not in this patent. Again.
附图说明DRAWINGS
图1为实施例1的紧固连接结构的立体分解示意图。1 is a perspective exploded view of the fastening structure of Embodiment 1.
图2为实施例2的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。2 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the second embodiment.
图3为实施例2的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Fig. 3 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the second embodiment.
图4为实施例2的紧固连接结构的立体分解示意图。4 is a perspective exploded view of the fastening structure of Embodiment 2.
图5为实施例3的紧固连接结构的立体分解示意图。Fig. 5 is a perspective exploded view showing the fastening structure of the third embodiment.
图6为实施例3的紧固连接结构的立体示意图。Fig. 6 is a perspective view showing the fastening structure of the third embodiment.
图7为实施例3的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Fig. 7 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the third embodiment.
图8为实施例4的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Fig. 8 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the fourth embodiment.
图9为实施例4的紧固连接组件的立体分解示意图。9 is a perspective exploded view of the fastening joint assembly of Embodiment 4.
图10为实施例5的紧固连接组件的立体分解示意图。10 is a perspective exploded view of the fastening assembly of Embodiment 5.
图11为实施例5的限位件与止转套的立体分解示意图。11 is a perspective exploded view of the limiting member and the rotation preventing sleeve of the embodiment 5.
图12为实施例5的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Fig. 12 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the fifth embodiment.
图13为实施例6的紧固连接结构的立体分解示意图。Figure 13 is a perspective exploded view showing the fastening structure of the embodiment 6.
图14为实施例6的锁紧螺母与止转套的立体分解示意图。 Figure 14 is a perspective exploded view of the lock nut and the rotation sleeve of Embodiment 6.
图15为实施例6的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Fig. 15 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the sixth embodiment.
图16为实施例7的锁紧螺母与止转套的立体分解示意图。Figure 16 is a perspective exploded view of the lock nut and the rotation sleeve of the seventh embodiment.
图17为实施例8的紧固连接结构的立体分解示意图。Figure 17 is a perspective exploded view showing the fastening structure of the eighth embodiment.
图18为实施例8的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 18 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the eighth embodiment.
图19为实施例9的紧固连接结构的立体分解示意图。Fig. 19 is a perspective exploded perspective view showing the fastening structure of the ninth embodiment.
图20为实施例9的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 20 is a cross-sectional view showing the axial position of the fastening screw of the fastening structure of the ninth embodiment.
图21为实施例10的紧固连接结构的立体示意图。Figure 21 is a perspective view showing the fastening structure of the embodiment 10.
图22为实施例10的紧固连接结构的立体分解示意图。Figure 22 is a perspective exploded view showing the fastening structure of the embodiment 10.
图23为实施例10的紧固连接结构过螺杆轴心位置剖切的剖视示意图。Figure 23 is a cross-sectional view showing the fastening joint structure of the embodiment 10 taken along the axial center of the screw.
图24为实施例11的紧固连接结构的立体示意图。Figure 24 is a perspective view showing the fastening structure of the eleventh embodiment.
图25为实施例11的紧固连接组件的立体分解示意图。Figure 25 is a perspective exploded view of the fastening assembly of the embodiment 11.
图26为实施例12的紧固连接结构过螺杆轴心位置剖切的剖视示意图。Figure 26 is a cross-sectional view showing the fastening joint structure of the embodiment 12 taken along the axial center of the screw.
图27为实施例12的紧固连接结构的立体分解示意图。Figure 27 is a perspective exploded view showing the fastening structure of the embodiment 12.
图28为实施例13的紧固连接结构过螺杆轴心位置剖切的剖视示意图。Figure 28 is a cross-sectional view showing the fastening joint structure of the embodiment 13 taken along the axial center of the screw.
图29为实施例13的紧固连接结构的立体分解示意图。Figure 29 is a perspective exploded view showing the fastening structure of the embodiment 13.
图30为实施例14的紧固连接结构的立体分解示意图。Figure 30 is a perspective exploded view showing the fastening structure of the embodiment 14.
图31为实施例14的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 31 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 14.
图32为实施例15的紧固连接结构的立体分解示意图。Figure 32 is a perspective exploded view showing the fastening structure of the fifteenth embodiment.
图33为实施例15的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 33 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the fifteenth embodiment.
图34为实施例16的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 34 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 16.
图35为实施例16的锁紧螺母和止转套的立体分解示意图。35 is a perspective exploded view of the lock nut and the rotation preventing sleeve of Embodiment 16.
图36为实施例16的紧固连接结构的立体分解示意图。Figure 36 is a perspective exploded perspective view showing the fastening structure of the embodiment 16.
图37为实施例17的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 37 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 17.
图38为实施例17的螺杆与螺杆止转垫的立体分解示意图。38 is a perspective exploded view of the screw and the screw rotation preventing pad of Embodiment 17.
图41为实施例18的紧固连接组件的立体分解示意图。Figure 41 is a perspective exploded view of the fastening assembly of the embodiment 18.
图42为实施例18的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 42 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 18.
图43为实施例19的紧固连接组件的立体分解示意图。Figure 43 is a perspective exploded view of the fastening assembly of Embodiment 19.
图44为实施例19的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 44 is a cross-sectional, schematic cross-sectional view showing the axial position of the fastening structure of the fastening structure of the embodiment 19.
图45为实施例20的锁紧螺母、止转套合抵挡螺母的立体分解示意图。Fig. 45 is a perspective exploded view showing the lock nut and the rotation preventing sleeve of the embodiment 20;
图46为实施例20的紧固连接结构过U形的螺纹连接件的轴心位置剖切的剖视示意图。Figure 46 is a cross-sectional view, taken along the axial center of the U-shaped threaded connection of the fastening structure of the embodiment 20.
图47为实施例21的紧固连接组件的立体分解示意图。Figure 47 is a perspective exploded view of the fastening joint assembly of Embodiment 21.
图48为实施例21的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 48 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the embodiment 21.
图49为图48的A区域的局部放大示意图。Fig. 49 is a partially enlarged schematic view showing the area A of Fig. 48;
图50为实施例22的止转套与弹性限位件的立体示意图。Figure 50 is a perspective view of the anti-rotation sleeve and the elastic limiting member of Embodiment 22.
图51为实施例22的紧固连接结构过螺杆的轴心位置剖切的剖视示意图。Figure 51 is a cross-sectional view, taken along the axial center of the screw of the fastening structure of the embodiment 22.
图52为图51的A区域的局部放大示意图。Figure 52 is a partially enlarged schematic view showing the area A of Figure 51.
图53为实施例23的限位件的立体示意图。Figure 53 is a perspective view showing the stopper of Embodiment 23.
图54为实施例24的限位件的立体示意图。Figure 54 is a perspective view showing the stopper of Embodiment 24.
图55为实施例25的曲轴连杆机构的立体分解示意。Fig. 55 is a perspective exploded view showing the crankshaft link mechanism of the twenty-fifth embodiment.
图56为实施例25的曲轴连杆机构过两螺杆的轴线剖切的剖切示意图。Figure 56 is a schematic cross-sectional view showing the crankshaft link mechanism of Embodiment 25 taken along the axis of the two screws.
具体实施方式detailed description
实施例1Example 1
如图1、图2所示,一种紧固连接组件,包括螺杆1、锁紧螺母2、止转套3、限位件,限位件为抵挡螺母4。As shown in FIG. 1 and FIG. 2, a fastening connection assembly includes a screw 1, a lock nut 2, a rotation preventing sleeve 3, and a limiting member, and the limiting member is a resisting nut 4.
锁紧螺母2为阶梯形,包括正六角形的夹持部5和外齿轮形的止转部6,止转部6径向凸出夹持部5。设有夹持部5,在安装和拆卸锁紧螺母2时,便于扳手夹持锁紧螺母2。在止转部6的外周设有多个均匀周向排列的三角形齿,一个三角形齿形成一个螺母止转部7,轴心位置设有螺纹通孔8。The lock nut 2 has a stepped shape and includes a positive hexagonal clamping portion 5 and an outer gear-shaped rotation preventing portion 6, and the rotation preventing portion 6 projects radially from the clamping portion 5. A clamping portion 5 is provided for facilitating the wrench to clamp the lock nut 2 when the lock nut 2 is attached and detached. A plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 6, and one triangular tooth forms a nut rotation preventing portion 7, and a threaded through hole 8 is provided at the axial center position.
螺杆1包括与锁紧螺母2的螺纹通孔8配合的外螺纹部9、圆柱形的光杆部10和正六角形的头部11,头部11朝向光杆部10的端面轴向凸出一个止转凸台12。The screw 1 includes an external thread portion 9 that cooperates with the threaded through hole 8 of the lock nut 2, a cylindrical light rod portion 10, and a right hexagonal head portion 11, and the head portion 11 projects axially toward the end surface of the light rod portion 10 to prevent rotation. Boss 12.
止转套3为圆环状,止转套3的轴心位置设有与外齿轮形状的止转部6间隙配合的轴向的内齿轮形状的止转通孔13,止转通孔13的孔壁上设有多个均匀周向分布的三角形槽,止转通孔13的孔壁上的单个三角形槽形成一个与螺母止转部7配合的止转套内止转部23。在 止转套3的一个端面上轴向凸出一个柱状的止转凸台14,止转凸台14的抵挡位置在周向方向、朝向螺杆旋松方向。The rotation preventing sleeve 3 has an annular shape, and the axial center position of the rotation preventing sleeve 3 is provided with an axial internal gear-shaped rotation preventing through hole 13 that is gap-fitted with the rotation preventing portion 6 of the external gear shape, and the rotation preventing through hole 13 is A plurality of evenly circumferentially distributed triangular grooves are provided in the wall of the hole, and a single triangular groove on the wall of the hole of the stop through hole 13 forms a rotation preventing sleeve inner rotation portion 23 which cooperates with the nut rotation preventing portion 7. In A cylindrical anti-rotation boss 14 is axially projected on one end surface of the rotation preventing sleeve 3, and the abutting position of the rotation preventing boss 14 is in the circumferential direction and toward the screw unscrewing direction.
抵挡螺母4为阶梯形,抵挡螺母4的轴心位置设有与螺杆1的外螺纹部9配合的螺纹通孔21,与螺纹通孔21连通、用来避空锁紧螺母2的夹持部5的避空孔15。The resisting nut 4 is stepped, and the axial position of the resisting nut 4 is provided with a threaded through hole 21 that cooperates with the external threaded portion 9 of the screw 1, and communicates with the threaded through hole 21 to avoid the clamping portion of the lock nut 2 The shelter hole 15 of 5.
紧固连接结构包括紧固连接组件、母体16、附体17。The fastening connection structure includes a fastening connection assembly, a base body 16, and an attachment body 17.
附体17上设有与螺杆1的外螺纹部9配合的通孔18,在附体17背离母体16的一侧设有与锁紧螺母2的止转凸台14间隙配合的止转圆孔22。The attachment body 17 is provided with a through hole 18 which cooperates with the external thread portion 9 of the screw 1. The side of the attachment body 17 facing away from the base body 16 is provided with a rotation preventing hole which is clearance-fitted with the rotation preventing boss 14 of the lock nut 2. twenty two.
母体16上设有与螺杆1的光杆部10配合的通孔19,在母体16背离附体17的一侧设有与螺杆1的止转凸台12间隙配合的圆止转孔20。The base body 16 is provided with a through hole 19 that engages with the polished rod portion 10 of the screw 1, and a circular rotation preventing hole 20 that is in clearance engagement with the rotation preventing boss 12 of the screw 1 is provided on the side of the parent body 16 facing away from the attachment body 17.
螺杆1的外螺纹部9依次穿过母体16上的通孔20、附体17上的通孔18且螺杆1的止转凸台12插入母体16的圆止转孔20中,螺杆1与锁紧螺母2螺纹连接,螺杆1的头部11轴向抵挡母体16,锁紧螺母2轴向抵挡附体17,螺杆1和锁紧螺母2将母体16与附体17紧固连接在一起。螺杆1的止转凸台12插入母体16的圆止转孔20中约束螺杆1相对母体16旋转。The externally threaded portion 9 of the screw 1 sequentially passes through the through hole 20 in the female body 16, the through hole 18 in the attached body 17, and the rotation preventing boss 12 of the screw 1 is inserted into the circular rotation preventing hole 20 of the female body 16, the screw 1 and the lock The tightening nut 2 is screwed, the head 11 of the screw 1 axially abuts against the body 16, and the lock nut 2 axially abuts the appendage 17, and the screw 1 and the lock nut 2 fasten the base 16 and the appendage 17 together. The rotation preventing boss 12 of the screw 1 is inserted into the circular rotation preventing hole 20 of the female body 16 to restrain the screw 1 from rotating relative to the female body 16.
止转套3安装在锁紧螺母2的止转部6外,止转凸台14的抵挡位置靠近附体17的止转圆孔22或与止转圆孔22接触,三角形齿的螺母止转部7插入相应的三角形槽的止转套内止转部23内,且止转套3的止转凸台14插入附体17的止转圆孔22中,抵挡螺母4安装在螺杆1的外螺纹部9上,螺杆1的夹持部5置于抵挡螺母4的避空孔15内,抵挡螺母4对止转套3背离附体17的一侧轴向限位。止转凸台14在朝向锁紧螺母2旋松方向的一侧被附体17的止转圆孔22抵挡、止转套3安装在锁紧螺母2外共同约束止转套3相对附体17旋转,螺母止转部7与止转套内止转部23配合约束止转套3相对锁紧螺母2旋转,母体16和附体17无相对旋转,因此螺杆1、锁紧螺母2不可旋转地与母体16和附体17安装在一起。The rotation preventing sleeve 3 is mounted outside the rotation preventing portion 6 of the lock nut 2, and the abutting position of the rotation preventing boss 14 is close to the rotation preventing hole 22 of the attachment body 17 or is in contact with the rotation preventing circular hole 22, and the nut of the triangular tooth is stopped. The portion 7 is inserted into the rotation preventing sleeve 23 of the corresponding triangular groove, and the rotation preventing boss 14 of the rotation preventing sleeve 3 is inserted into the rotation preventing hole 22 of the attachment body 17, and the resisting nut 4 is installed outside the screw 1. On the threaded portion 9, the clamping portion 5 of the screw 1 is placed in the hollow hole 15 of the resisting nut 4, and the resisting nut 4 is axially restrained from the side of the rotation preventing sleeve 3 facing away from the attachment body 17. The rotation preventing boss 14 is resisted by the rotation preventing hole 22 of the attachment body 17 on the side facing the unscrewing direction of the lock nut 2, and the rotation preventing sleeve 3 is mounted outside the lock nut 2 to jointly restrain the rotation preventing sleeve 3 relative to the body 17 Rotating, the nut rotation preventing portion 7 and the rotation preventing sleeve inner rotation preventing portion 23 cooperate to restrain the rotation preventing sleeve 3 from rotating relative to the lock nut 2, and the mother body 16 and the attachment body 17 are not relatively rotated, so the screw 1 and the lock nut 2 are non-rotatably It is mounted with the parent body 16 and the appendage 17.
实施例2Example 2
如图3、图4所示,与实施例1不同的是,限位件为卡环31。As shown in FIGS. 3 and 4, unlike the first embodiment, the stopper is a snap ring 31.
卡环包括环状的非闭合的卡环本体,在卡环本体的内侧面径向向内凸设有三个抵挡凸部,三个抵挡凸部的内侧面分布在于卡环本体共轴的同一圆周面上。The snap ring includes an annular non-closed snap ring body, and three resisting protrusions are protruded radially inwardly on the inner side surface of the snap ring body, and the inner sides of the three resisting convex portions are distributed on the same circumference of the common body of the snap ring body On the surface.
螺杆32包括依次排列的头部33、圆柱形的光杆部34、外螺纹部35、圆柱形的安装部36,在安装部36上设有周向的卡槽37。The screw 32 includes a head portion 33 which is sequentially arranged, a cylindrical light rod portion 34, a male screw portion 35, a cylindrical mounting portion 36, and a circumferential locking groove 37 is provided in the mounting portion 36.
锁紧螺母38的夹持部39径向凸出止转部40。The clamping portion 39 of the lock nut 38 projects radially from the rotation stop portion 40.
在止转套41上还设有与止转通孔42同轴并连通、用来避空锁紧螺母38的夹持部39的避空孔43,避空孔43的孔径大于止转通孔42的孔径。The anti-rotation sleeve 41 is further provided with a cutout hole 43 which is coaxial with the anti-rotation through hole 42 and is used to avoid the clamping portion 39 of the lock nut 38. The aperture of the cutout hole 43 is larger than the through-hole. The aperture of 42.
紧固连接结构与实施例1不同的是,卡环31的抵挡凸部通过弹性变形卡在螺杆32安装部36的卡槽37内对止转套41背离附体44的一侧轴向限位,锁紧螺母38的夹持部39置于止转套41的避空孔43内。The fastening structure is different from that of the first embodiment in that the resisting projection of the snap ring 31 is axially restrained by the elastic deformation in the latching groove 37 of the mounting portion 36 of the screw 32 to the side of the anti-rotation sleeve 41 facing away from the attachment 44. The clamping portion 39 of the lock nut 38 is placed in the cutout hole 43 of the rotation preventing sleeve 41.
实施例3Example 3
如图5至图7所示,与实施例1不同的是,限位件为卡环51。As shown in FIGS. 5 to 7, unlike the first embodiment, the stopper is a snap ring 51.
锁紧螺母52为外六角螺母,锁紧螺母52的外周的六个平面形成周向排列的六个螺母止转部53,轴心位置设有螺纹通孔54,锁紧螺母52的外周设有周向与卡环51配合的卡槽55。The lock nut 52 is a hexagonal nut. The six planes of the outer circumference of the lock nut 52 form a circumferentially arranged six nut rotation preventing portion 53. The shaft center position is provided with a threaded through hole 54. The outer circumference of the lock nut 52 is provided. A card slot 55 that cooperates with the snap ring 51 in the circumferential direction.
止转套56的轴心位置设有与锁紧螺母52配合的轴向的止转通孔57,在止转套56的一个端面上轴向凸出一个止转凸台58。止转通孔57的孔壁为两个结构相同的正六角形孔旋转30°的相交结构,在止转通孔57的孔壁上形成十二个尖角形凹槽,每个尖角形凹槽由正六角形孔的两相交平面形成,尖角形凹槽的两相交平面形成与锁紧螺母52的螺母止转部53配合的止转套内止转部59。The axial center of the rotation preventing sleeve 56 is provided with an axial rotation preventing through hole 57 that engages with the lock nut 52, and a rotation preventing projection 58 is axially projected on one end surface of the rotation preventing sleeve 56. The hole wall of the through hole 57 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the through hole 57, and each of the pointed grooves is formed by The two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 59 that cooperates with the nut rotation preventing portion 53 of the lock nut 52.
卡环51包括非闭合的圆环状的卡环51本体,卡环本体63的外周均匀分布六条径向凸出的限位凸条61,在卡槽55本体两端的端部均设有拆卸用通孔60。限位凸条61径向凸出锁紧螺母52上的卡槽55的外周,限位凸条61的最大外径大于止转通孔57的最大孔径;卡环本体63的内周与锁紧螺母52的卡槽55底部的外周配合。The snap ring 51 includes a body of a non-closed annular snap ring 51. The outer circumference of the snap ring body 63 is evenly distributed with six radially protruding limiting ribs 61. The ends of the main body of the card slot 55 are provided with disassembly. Through hole 60. The limiting rib 61 radially protrudes from the outer circumference of the locking groove 55 on the locking nut 52. The maximum outer diameter of the limiting rib 61 is larger than the maximum diameter of the locking through hole 57; the inner circumference of the snap ring body 63 and the locking The outer circumference of the bottom of the slot 55 of the nut 52 is fitted.
止转套56安装在锁紧螺母52外,卡环本体63安装在锁紧螺母52的卡槽55内,卡环51的限位凸条61抵挡止转套56背离附体62的一侧的端面对止转套56背离附体62的一侧轴向限位。The retaining sleeve 56 is mounted on the outside of the lock nut 52. The snap ring body 63 is mounted in the latching groove 55 of the lock nut 52. The limiting rib 61 of the snap ring 51 abuts against the side of the retaining sleeve 56 facing away from the attachment 62. The end faces axially limit the side of the anti-rotation sleeve 56 away from the attachment 62.
拆卸锁紧螺母52时,用特制的钳类工具伸入到两个拆卸用通孔60中,再向外张开卡环51,卡环51就可从锁紧螺母52的卡槽55中脱出来。When the lock nut 52 is disassembled, the special pliers tool is used to extend into the two disassembling through holes 60, and then the snap ring 51 is opened outward, and the snap ring 51 can be removed from the slot 55 of the lock nut 52. come out.
实施例4Example 4
如图8、图9所示,与实施例1不同的是,一种紧固连接组件,包括螺杆71、锁紧螺母 72、止转套73,不需限位件。As shown in FIG. 8 and FIG. 9, different from Embodiment 1, a fastening connection assembly includes a screw 71 and a lock nut. 72, stop sleeve 73, no limit parts.
锁紧螺母72的夹持部74径向凸出止转部75。止转套73包括环状的止转套本体86,在止转套本体86的轴心位置设有中心通孔76,在中心通孔76的孔壁上均匀分布三个弹性臂77。每个弹性臂77包括从中心通孔76的孔壁径向向内形成的水平凸部78、轴向向上再径向向内再轴向下形成的U形弹性臂79;在U形弹性臂79的端部径向向内形成限位部80、在三个限位部80的内侧面上设有与锁紧螺母72外齿轮形状的止转部75部分配合的内齿轮形状的多个均匀周向排列的三角形槽,限位部80的内侧面上的单个三角形槽成一个与螺母止转部81配合的止转套内止转部82,三个限位部80的内侧面上的三角形槽的槽壁围合形成非闭合的止转通孔83。止转套73背离U形弹性臂79的端面上轴向凸出一个止转凸台84。止转部75的外周与夹持部74朝向朝向止转部75的端面形成容置限位部80的限位部容置空间。The clamping portion 74 of the lock nut 72 radially protrudes from the rotation preventing portion 75. The rotation preventing sleeve 73 includes an annular rotation preventing sleeve body 86. The center of the rotation preventing sleeve body 86 is provided with a central through hole 76, and three elastic arms 77 are evenly distributed on the wall of the central through hole 76. Each of the resilient arms 77 includes a horizontal projection 78 formed radially inward from the bore wall of the central through bore 76, a U-shaped resilient arm 79 axially upwardly and then radially inwardly and axially downwardly formed; a U-shaped resilient arm The end portion of the 79 portion is formed inwardly inwardly in the stopper portion 80, and the inner surface of the three stopper portion 80 is provided with a plurality of uniform shapes of the inner gear that partially engages with the rotation preventing portion 75 of the outer shape of the lock nut 72. A circumferentially arranged triangular groove, a single triangular groove on the inner side surface of the limiting portion 80 is formed into a rotation preventing sleeve inner rotation preventing portion 82 engaged with the nut rotation preventing portion 81, and a triangular shape on the inner side surface of the three limiting portions 80 The groove wall of the groove is enclosed to form a non-closed through hole 83. A rotation preventing projection 84 is axially projected from the end surface of the rotation preventing sleeve 73 away from the U-shaped elastic arm 79. The outer circumference of the rotation stop portion 75 and the nip portion 74 face the end surface facing the rotation stop portion 75 to form a stopper accommodation space for accommodating the stopper portion 80.
紧固连接结构与实施例1不同的是,锁紧螺母72的止转部75朝向附体85。止转套73的U形弹性臂79通过弹性变形置于锁紧螺母72的止转部75外且止转套73的止转凸台84插入附体85的止转圆孔中,止转套73的限位部80被锁紧螺母72的夹持部74朝向止转部75的端面抵挡对止转套73背离附体85的一侧轴向限位。The fastening connection structure is different from that of the first embodiment in that the rotation preventing portion 75 of the lock nut 72 faces the attachment 85. The U-shaped elastic arm 79 of the rotation preventing sleeve 73 is placed outside the rotation preventing portion 75 of the lock nut 72 by elastic deformation, and the rotation preventing boss 84 of the rotation preventing sleeve 73 is inserted into the rotation preventing hole of the attachment body 85, and the rotation preventing sleeve The stopper portion 80 of the 73 is axially restrained by the grip portion 74 of the lock nut 72 toward the end surface of the rotation preventing portion 75 against the side of the rotation preventing sleeve 73 facing away from the attachment 85.
实施例5Example 5
如图10至12所示,与实施例4不同的是,锁紧螺母101依次包括夹持部102、止转部103、圆柱形的抵挡部104,止转部103径向凸出夹持部102与避空用的抵挡部104。As shown in FIGS. 10 to 12, unlike the fourth embodiment, the lock nut 101 sequentially includes a clamping portion 102, a rotation preventing portion 103, and a cylindrical abutting portion 104. The rotation preventing portion 103 radially protrudes from the clamping portion. 102 and the abutting portion 104 for avoiding the air.
限位件为塑胶件,包括圆环状的限位件本体105,限位件本体105外周形状与止转套106外周形状配合并相似,限位件本体105内圆直径稍大于锁紧螺母101的止转部103的外径。在限位件本体105的中心通孔113上设有三个与凹槽114,沿每个凹槽114的底面径向向轴线方向再轴向同侧凸出限位件本体形成三个弹性臂107,沿每个弹性臂107的端部径向向轴线方向形成与限位件本体105平行的限位部108,限位部108径向凸出中心通孔113的孔壁。在限位件本体105的同一个端面上凸出六根限位柱109,在限位柱109的端部设有抵挡环110。限位柱109与限位部108置于限位件本体105的同一侧。抵挡部104的外周和止转部103朝向抵挡部104的端面形成容置限位部108的限位部容置空间。The limiting member is a plastic member, and includes a ring-shaped limiting member body 105. The outer peripheral shape of the limiting member body 105 is similar to the outer shape of the rotation preventing sleeve 106, and the inner diameter of the limiting member body 105 is slightly larger than the locking nut 101. The outer diameter of the rotation stop portion 103. Three recesses 114 are formed in the central through hole 113 of the limiting body 105, and three elastic arms 107 are formed on the bottom surface of each of the recesses 114 in the axial direction and then axially on the same side. A limiting portion 108 parallel to the limiting member body 105 is formed in the axial direction along the end portion of each of the elastic arms 107, and the limiting portion 108 radially protrudes from the hole wall of the central through hole 113. Six limiting posts 109 are protruded from the same end surface of the limiting body 105, and a resisting ring 110 is provided at the end of the limiting post 109. The limiting post 109 and the limiting portion 108 are placed on the same side of the limiting body 105. The outer circumference of the abutting portion 104 and the rotation preventing portion 103 form a stopper receiving space for accommodating the stopper portion 108 toward the end surface of the abutting portion 104.
止转套106为金属件,在止转套106的止转通孔的孔壁周向均布三个避空限位件的弹性臂107的避空槽111,在止转套106上设有六个周向分布的轴向的、与限位件的限位柱109配合的安装孔112,在止转套106的外周设有三个用来取出限位件的避空槽111。限位件的三个限位部108的最小内径小于止转通孔的最小内径。The anti-rotation sleeve 106 is a metal piece, and in the circumferential direction of the hole wall of the anti-rotation through hole of the anti-rotation sleeve 106, three cutout grooves 111 of the elastic arm 107 of the air-tight limiting member are uniformly arranged, and six of the anti-rotation sleeves 106 are provided on the anti-rotation sleeve 106. A circumferentially distributed axial mounting hole 112 that cooperates with the limiting post 109 of the limiting member is provided with three cutouts 111 for taking out the limiting member on the outer circumference of the rotation preventing sleeve 106. The minimum inner diameter of the three limiting portions 108 of the limiting member is smaller than the minimum inner diameter of the through-stopping hole.
将加工完成后的止转套106放入成型限位件的注塑模具中,注塑成型限位件,这样限位件的限位柱109穿过止转套106的安装孔112、通过限位柱109的抵挡环110将限位件固定在止转套106上,弹性臂107置于止转套106的避空槽111中,限位部108径向凸出止转通孔。After the processing, the rotation preventing sleeve 106 is placed in the injection mold of the forming limit member, and the limiting member is injection molded, so that the limiting post 109 of the limiting member passes through the mounting hole 112 of the rotation preventing sleeve 106 and passes through the limiting column. The resisting ring 110 of the 109 fixes the limiting member on the rotation preventing sleeve 106, and the elastic arm 107 is placed in the cutout groove 111 of the rotation preventing sleeve 106, and the limiting portion 108 radially protrudes from the rotation preventing through hole.
止转套106与限位件一同安装在锁紧螺母101外,止转套本体115安装在锁紧螺母101的止转部103外,限位件的限位部108通过弹性臂107弹性变形被止转部103朝向抵挡部104的端面抵挡对止转套106背离附体114的一侧轴向限位。The rotation sleeve 106 is mounted outside the lock nut 101 together with the stopper member. The rotation sleeve body 115 is mounted outside the rotation stop portion 103 of the lock nut 101, and the stopper portion 108 of the stopper member is elastically deformed by the elastic arm 107. The rotation stop portion 103 is axially restrained toward the side of the abutment portion 104 facing away from the attachment body 114 toward the end surface of the abutment portion 104.
实施例6Example 6
如图13至图15所示,与实施例5不同的是,锁紧螺母121的止转部122的外周设有多个均匀周向排列的梯形齿,一个梯形齿形成一个螺母止转部123。As shown in FIG. 13 to FIG. 15, different from the fifth embodiment, the outer circumference of the rotation preventing portion 122 of the lock nut 121 is provided with a plurality of trapezoidal teeth uniformly arranged in a circumferential direction, and one trapezoidal tooth forms a nut rotation preventing portion 123. .
止转套124包括环状的止转套本体125,在止转套本体125的轴心位置设有中心通孔126,沿止转套本体125的外周和内周同向延伸设有相同高度的外凸环127和内凸环128,在内凸环128上沿内凸环128的顶面向内径向凸设有三个限位部129,沿每个限位部129的周向两侧、以中心通孔126轴心为中心点设有切开内凸环128并部分切开止转套本体125的放射状的直线切槽130,与限位部129相连的内凸环128和止转套本体125形成弹性臂131。在内凸环128上不设有限位部129的内侧面上设有与锁紧螺母121的外齿轮形状的止转部122配合的内齿轮形状的多个均匀周向排列的梯形槽,单个梯形槽形成一个与螺母止转部123配合的止转套内止转部132,三个限位部129的内侧面上的梯形槽的槽壁围合形成非闭合的止转通孔133。在止转套本体125朝向内凸环128的一侧、内凸环128和外凸环127之间轴向凸出一个止转凸台134。抵挡部135的外周和止转部122朝向朝向抵挡部135的端面形成容置限位部129的限位部容置空间。The rotation sleeve 124 includes an annular rotation sleeve body 125. The center of the rotation sleeve body 125 is provided with a central through hole 126, and the same circumference is extended along the outer circumference and the inner circumference of the rotation sleeve body 125. The outer convex ring 127 and the inner convex ring 128 have three limiting portions 129 protruding inwardly along the top surface of the inner convex ring 128 on the inner convex ring 128, along the circumferential sides of each of the limiting portions 129, with the center The center of the through hole 126 is provided with a radial straight groove 130 for cutting the inner convex ring 128 and partially cutting the rotation preventing sleeve body 125, and the inner convex ring 128 and the rotation preventing sleeve body 125 connected to the limiting portion 129. A resilient arm 131 is formed. A plurality of evenly circumferentially arranged trapezoidal grooves of an internal gear shape, which are provided with an outer gear shape of the lock nut 122 of the lock nut 121, are provided on the inner convex surface of the inner collar ring 128 without a stopper portion 129, and a single trapezoidal shape The groove forms a rotation preventing sleeve inner rotation preventing portion 132 that engages with the nut rotation preventing portion 123. The groove wall of the trapezoidal groove on the inner side surface of the three limiting portions 129 is closed to form a non-closed rotation preventing through hole 133. A rotation preventing boss 134 is axially projected between a side of the rotation preventing sleeve body 125 facing the inner convex ring 128, the inner convex ring 128 and the outer convex ring 127. The outer circumference of the abutting portion 135 and the rotation preventing portion 122 are formed toward the end surface facing the abutting portion 135 to form a stopper receiving space for accommodating the stopper portion 129.
止转套124的止转套内止转部132置于锁紧螺母121的止转部122外、止转套124的弹性臂131通过弹性变形置于锁紧螺母121的抵挡部135外且止转套124的止转凸台134插入附体136的止转圆孔137中,止转套124的限位部129被锁紧螺母121的止转部122朝向抵挡部135的端面抵挡对止转套124背离附体136的一侧轴向限位。 The anti-rotation sleeve inner rotation preventing portion 132 of the rotation preventing sleeve 124 is disposed outside the rotation preventing portion 122 of the lock nut 121, and the elastic arm 131 of the rotation preventing sleeve 124 is placed outside the resisting portion 135 of the lock nut 121 by elastic deformation and stopped. The rotation preventing boss 134 of the rotary sleeve 124 is inserted into the rotation preventing hole 137 of the attachment body 136, and the stopper portion 129 of the rotation preventing sleeve 124 is resisted by the rotation preventing portion 122 of the lock nut 121 toward the end surface of the resisting portion 135. The sleeve 124 is axially offset from one side of the attachment 136.
实施例7Example 7
如图16所示,与实施例1不同的是,止转部151的外周为花键形,外周形成五个凸出部,每个凸出部形成一个螺母止转部152。As shown in Fig. 16, unlike the first embodiment, the outer circumference of the rotation preventing portion 151 has a spline shape, and the outer circumference forms five projections, and each projection forms a nut rotation preventing portion 152.
止转通孔153的孔壁为与止转部151的花键形状的外周配合的花键形凹槽,止转通孔153孔壁上的单个凹槽形成与螺母止转部152配合的止转套内止转部154。The hole wall of the through hole 153 is a spline-shaped groove that engages with the spline-shaped outer circumference of the rotation preventing portion 151, and the single groove on the hole wall of the rotation preventing hole 153 forms a match with the nut rotation preventing portion 152. The sleeve inner rotation preventing portion 154.
实施例8Example 8
如图17、图18所示,与实施例1不同的是,锁紧螺母171为标准的外六角螺母。As shown in FIGS. 17 and 18, unlike the first embodiment, the lock nut 171 is a standard outer hex nut.
止转通孔172的孔壁为两个结构相同的正六角形孔旋转30°的相交结构,在止转通孔172的孔壁上形成十二个尖角形凹槽,每个尖角形凹槽由正六角形孔的两相交平面形成,尖角形凹槽的两相交平面形成与止转部173的螺母止转部174配合的止转套内止转部175。The hole wall of the through hole 172 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the hole wall of the through hole 172, and each of the pointed grooves is formed by The two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 175 that cooperates with the nut rotation preventing portion 174 of the rotation preventing portion 173.
抵挡螺母176的外周为正六角形。抵挡螺母176的轴心位置设有与螺杆177的外螺纹部178配合的螺纹通孔179,与螺纹通孔179连通、用来避空锁紧螺母171的夹持部180的避空孔181,避空孔181的孔径大于螺纹孔的孔径。The outer circumference of the resisting nut 176 is a regular hexagon. The axial position of the resisting nut 176 is provided with a threaded through hole 179 that engages with the externally threaded portion 178 of the screw 177, and communicates with the threaded through hole 179 to avoid the hollow hole 181 of the clamping portion 180 of the lock nut 171. The aperture of the cutout 181 is larger than the aperture of the threaded hole.
紧固连接结构包括紧固连接组件、一体式结构的母体和附体。母体和附体形成带断口的环形体182;在所述的环形体182的断口的两端分别同向设有正对且平行的第一安装部183与第二安装部184。在第一安装部183上设有与螺杆177的光杆部185配合的通孔186,在第一安装部183背离第二安装部184的一侧设有与螺杆177的止转凸台187间隙配合的圆止转孔188。在所述的第二安装部184上设有与螺杆177的外螺纹部178配合的通孔189,在第二安装部184背离第一安装部183的一侧设有与锁紧螺母171的止转凸台190间隙配合的止转圆孔191。The fastening connection structure includes a fastening connection assembly, a body of the unitary structure, and an attachment. The parent body and the appendage form a fractured annular body 182; at both ends of the fracture of the annular body 182, a first mounting portion 183 and a second mounting portion 184 that face and are parallel are provided in the same direction. The first mounting portion 183 is provided with a through hole 186 that cooperates with the polished rod portion 185 of the screw 177. The side of the first mounting portion 183 facing away from the second mounting portion 184 is provided with a clearance fit with the anti-rotation boss 187 of the screw 177. The round stop hole 188. A through hole 189 is formed in the second mounting portion 184 to engage with the external thread portion 178 of the screw 177, and is disposed on the side of the second mounting portion 184 away from the first mounting portion 183 with the lock nut 171. The rotary boss 190 has a clearance-fitted circular hole 191.
螺杆177的外螺纹部178依次穿过第一安装部183上的通孔186、第二安装部184上的通孔189且螺杆177的止转凸台187插入第一安装部183的圆止转孔188中,螺杆177与锁紧螺母171螺纹连接,螺杆177的头部轴向抵挡第一安装部183,锁紧螺母171轴向抵挡第二安装部184,螺杆177和锁紧螺母171将第一安装部183与第二安装部184紧固连接在一起。螺杆177的止转凸台187插入第一安装部183的圆止转孔188中约束螺杆177相对第一安装部183旋转。The external thread portion 178 of the screw 177 sequentially passes through the through hole 186 in the first mounting portion 183, the through hole 189 in the second mounting portion 184, and the rotation preventing boss 187 of the screw 177 is inserted into the circular rotation of the first mounting portion 183. In the hole 188, the screw 177 is screwed to the lock nut 171, the head of the screw 177 axially resists the first mounting portion 183, the lock nut 171 axially resists the second mounting portion 184, and the screw 177 and the lock nut 171 are A mounting portion 183 is fastened to the second mounting portion 184. The rotation preventing boss 187 of the screw 177 is inserted into the circular rotation preventing hole 188 of the first mounting portion 183 to rotate the restraining screw 177 with respect to the first mounting portion 183.
止转套192安装在锁紧螺母171外,三角形齿的螺母止转部174插入相应的三角形槽的止转套内止转部175内,且止转套192的止转凸台190插入第二安装部184的止转圆孔191中,抵挡螺母176安装在螺杆177的外螺纹部178上,锁紧螺母171置于抵挡螺母176的避空孔181内,抵挡螺母176对止转套192背离第二安装部184的一侧轴向限位。止转套192的止转凸台190与第二安装部184的止转圆孔191配合约束止转套192相对第二安装部184旋转,螺母止转部174与止转套内止转部175配合约束止转套192相对锁紧螺母171旋转,第一安装部183和第二安装部184无相对旋转,因此螺杆177、锁紧螺母171不可旋转地与第一安装部183和第二安装部184安装在一起。The rotation preventing sleeve 192 is mounted outside the lock nut 171, the nut rotation preventing portion 174 of the triangular tooth is inserted into the rotation preventing sleeve 175 of the corresponding triangular groove, and the rotation preventing boss 190 of the rotation preventing sleeve 192 is inserted into the second rotation. In the rotation preventing hole 191 of the mounting portion 184, the resisting nut 176 is mounted on the external thread portion 178 of the screw 177, and the lock nut 171 is placed in the cutout hole 181 of the resisting nut 176, and the resisting nut 176 is opposed to the rotation preventing sleeve 192. One side of the second mounting portion 184 is axially constrained. The rotation preventing boss 190 of the rotation preventing sleeve 192 and the rotation preventing hole 191 of the second mounting portion 184 cooperate with the rotation preventing sleeve 192 to rotate relative to the second mounting portion 184, and the nut rotation preventing portion 174 and the rotation preventing sleeve inner rotation preventing portion 175 The first rotation preventing member 183 and the second mounting portion 184 are not rotated relative to each other, so that the screw 177 and the lock nut 171 are non-rotatably coupled to the first mounting portion 183 and the second mounting portion. 184 is installed together.
实施例9Example 9
如图19、图20所示,一种紧固连接结构,包括紧固连接组件、母体201、附体202。As shown in FIG. 19 and FIG. 20, a fastening connection structure includes a fastening connection assembly, a base 201, and an attachment body 202.
紧固连接组件包括螺杆203、锁紧螺母204、止转套205、一体式结构的膨胀套206、抵挡螺母207。The fastening connection assembly includes a screw 203, a lock nut 204, a rotation sleeve 205, an expansion sleeve 206 of a one-piece structure, and a resist nut 207.
螺杆203包括依次分布的抵挡部208、光杆部209、外螺纹部210,抵挡部208径向凸出外螺纹部210,在抵挡部208上设有驱动膨胀套206膨胀的驱动锥面211。The screw 203 includes a resisting portion 208, a polished rod portion 209, and a male thread portion 210 which are sequentially distributed. The resisting portion 208 radially protrudes from the external thread portion 210, and the resisting portion 208 is provided with a driving taper surface 211 for driving the expansion sleeve 206 to expand.
锁紧螺母204为标准的外六角螺母,锁紧螺母204的外周的六个平面形成周向排列的六个螺母止转部212,轴心位置设有螺纹通孔213。The lock nut 204 is a standard outer hex nut, and the six planes of the outer circumference of the lock nut 204 form six nut rotation preventing portions 212 arranged circumferentially, and the threaded through holes 213 are provided at the axial center.
止转套205为环状,止转套205的轴心位置设有与锁紧螺母204配合的轴向的止转通孔214,在止转套205的一个端面上轴向凸出一个止转凸台215,止转凸台215的抵挡位置在周向方向、朝向螺杆旋松方向。止转通孔214的孔壁为两个结构相同的正六角形孔旋转30°的相交结构,在止转通孔214的孔壁上形成十二个尖角形凹槽,每个尖角形凹槽由正六角形孔的两相交平面形成,尖角形凹槽11的两相交平面形成与锁紧螺母204的螺母止转部212配合的止转套内止转部216。The rotation sleeve 205 is annular, and the axial center of the rotation sleeve 205 is provided with an axial rotation preventing through hole 214 that cooperates with the lock nut 204, and a rotation stop is axially protruded on one end surface of the rotation sleeve 205. The boss 215 and the abutting position of the rotation preventing boss 215 are oriented in the circumferential direction toward the screw unscrewing direction. The hole wall of the through hole 214 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the stop through hole 214, and each of the pointed grooves is formed by The two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves 11 form the anti-rotation sleeve inner rotation preventing portions 216 that cooperate with the nut rotation preventing portions 212 of the lock nut 204.
抵挡螺母207的外周为正六角形。抵挡螺母207的轴心位置设有与螺杆203的外螺纹部210配合的螺纹通孔219,与螺纹通孔219连通、用来避空锁紧螺母204的夹持部217的避空孔218,避空孔218的孔径大于螺纹孔的孔径。The outer circumference of the resisting nut 207 is a regular hexagon. The axial position of the resisting nut 207 is provided with a threaded through hole 219 that engages with the externally threaded portion 210 of the screw 203, and communicates with the threaded through hole 219 to avoid the hollow hole 218 of the clamping portion 217 of the lock nut 204. The aperture of the cutout 218 is larger than the aperture of the threaded aperture.
膨胀套206为圆管状,在膨胀套206的下端设有供膨胀套206膨胀时胀开用的开槽209。The expansion sleeve 206 has a circular tubular shape, and a slit 209 for expanding the expansion sleeve 206 when the expansion sleeve 206 is expanded is provided at the lower end of the expansion sleeve 206.
附体202上设有与膨胀套206外周和螺杆203的抵挡部208配合的通孔210,在附体202背离母体201的一侧设有与止转凸台215间隙配合的止转圆孔211。The attachment body 202 is provided with a through hole 210 that cooperates with the outer periphery of the expansion sleeve 206 and the abutting portion 208 of the screw 203. On the side of the attachment body 202 facing away from the base 201, a rotation preventing hole 211 is provided in a clearance fit with the rotation preventing boss 215. .
母体201上设有与膨胀套206外周和螺杆203的抵挡部208配合的盲孔212。 The female body 201 is provided with a blind hole 212 that cooperates with the outer circumference of the expansion sleeve 206 and the abutting portion 208 of the screw 203.
螺杆203的外螺纹部210穿过膨胀套206,螺杆203的抵挡部208、部分膨胀套206安装在母体201的盲孔212内,螺杆203的外螺纹部210穿过附体202上的通孔210与锁紧螺母204的螺纹孔螺纹连接,驱动锥面211与膨胀套206上的通孔的孔壁设有开槽209的一端配合胀开膨胀套206,膨胀套206与母体201间的胀紧摩擦力将膨胀套206固定在母体201的盲孔212内,螺杆203的抵挡部208被膨胀套206轴向抵挡,锁紧螺母204轴向抵挡附体202,螺杆203、膨胀套206和锁紧螺母204将母体201和附体202紧固连接在一起。The external thread portion 210 of the screw 203 passes through the expansion sleeve 206. The resisting portion 208 of the screw 203 and the partial expansion sleeve 206 are mounted in the blind hole 212 of the female body 201. The external thread portion 210 of the screw 203 passes through the through hole on the attachment body 202. 210 is threadedly connected to the threaded hole of the lock nut 204. The driving cone surface 211 and the hole wall of the through hole on the expansion sleeve 206 are provided with one end of the slot 209 to expand the expansion sleeve 206, and the expansion between the expansion sleeve 206 and the base 201 The tightening force is used to fix the expansion sleeve 206 in the blind hole 212 of the female body 201. The resisting portion 208 of the screw 203 is axially resisted by the expansion sleeve 206. The lock nut 204 axially resists the attachment body 202, the screw 203, the expansion sleeve 206 and the lock. The tightening nut 204 securely connects the parent body 201 and the appendage 202 together.
止转套205安装在锁紧螺母204外,止转凸台215的抵挡位置靠近附体202的止转圆孔211或与止转圆孔211接触,止转套205的止转套内止转部216置于锁紧螺母204的螺母止转部212外且止转套205的止转凸台215插入附体202的止转圆孔211中,抵挡螺母207安装在螺杆203的外螺纹部210上,凸出止转套205的锁紧螺母204置于抵挡螺母207的避空孔218内,抵挡螺母207对止转套205背离附体202的一侧轴向限位。止转套内止转部216与螺母止转部212配合约束锁紧螺母204相对止转套205旋转,止转凸台215在朝向锁紧螺母204旋松方向的一侧被附体202的止转圆孔211抵挡、止转套205安装在锁紧螺母204外共同约束止转套205相对附体202旋转。锁紧螺母204不可旋转地与螺杆203、膨胀套206、母体201和附体202安装在一起。The rotation preventing sleeve 205 is installed outside the lock nut 204, and the resisting position of the rotation preventing boss 215 is close to the rotation preventing hole 211 of the attachment body 202 or is in contact with the rotation preventing hole 211, and the rotation preventing sleeve of the rotation preventing sleeve 205 is stopped. The portion 216 is disposed outside the nut rotation preventing portion 212 of the lock nut 204 and the rotation preventing boss 215 of the rotation preventing sleeve 205 is inserted into the rotation preventing hole 211 of the attachment body 202. The resisting nut 207 is mounted on the external thread portion 210 of the screw 203. Upper, the lock nut 204 protruding from the anti-rotation sleeve 205 is placed in the hollow hole 218 of the resisting nut 207, and the resisting nut 207 is axially restrained from the side of the anti-rotation sleeve 205 facing away from the attachment body 202. The rotation preventing sleeve inner rotation preventing portion 216 and the nut rotation preventing portion 212 cooperate with the restriction lock nut 204 to rotate relative to the rotation preventing sleeve 205, and the rotation preventing projection 215 is attached to the side of the locking nut 204 by the attachment body 202. The round hole 211 is resisted, and the rotation sleeve 205 is mounted outside the lock nut 204 to jointly restrain the rotation of the rotation sleeve 205 relative to the attachment body 202. The lock nut 204 is non-rotatably mounted with the screw 203, the expansion sleeve 206, the base 201, and the appendage 202.
实施例10Example 10
如图21至23所示,一种紧固连接组件,包括螺杆231、锁紧螺母232、止转套233。As shown in FIGS. 21 to 23, a fastening connection assembly includes a screw 231, a lock nut 232, and a rotation preventing sleeve 233.
锁紧螺母232为阶梯形,包括正六角形的夹持部234和外齿轮形的止转部235,止转部235径向凸出夹持部234。设有夹持部234,在安装和拆卸锁紧螺母232时,便于扳手夹持锁紧螺母232。在止转部235的外周设有多个均匀周向排列的三角形齿,一个三角形齿形成一个螺母止转部236,轴心位置设有螺纹通孔238。The lock nut 232 has a stepped shape and includes a positive hexagonal clamping portion 234 and an outer gear-shaped rotation preventing portion 235. The rotation preventing portion 235 radially protrudes from the clamping portion 234. A clamping portion 234 is provided to facilitate the clamping of the locking nut 232 by the wrench when the locking nut 232 is attached and detached. A plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 235, and one triangular tooth forms a nut rotation preventing portion 236, and a threaded through hole 238 is provided at the axial center position.
螺杆231包括与锁紧螺母232的螺纹通孔238配合的外螺纹部239和正六角形的头部241,头部241朝向外螺纹部239的端面轴向凸出一个止转凸台242。The screw 231 includes an external thread portion 239 that cooperates with the threaded through hole 238 of the lock nut 232 and a right hexagonal head portion 241 that protrudes axially toward the end surface of the external thread portion 239 by a rotation preventing boss 242.
止转套233为圆环状,止转套233的轴心位置设有与锁紧螺母232配合的轴向的止转通孔243,在止转套233的一个端面上轴向凸出一个止转凸台244,止转凸台244的抵挡位置在周向方向、朝向螺杆旋松方向。止转通孔243的孔壁为与锁紧螺母232的外齿轮形状的止转部235配合的内齿轮形状,止转通孔243的孔壁上设有多个均匀周向并列的三角形槽,止转通孔243的孔壁上的单个三角形槽形成一个与螺母止转部236配合的止转套内止转部237,止转套233的孔壁周向均布三个半圆形用来容置固定胶245的胶槽246。The rotation preventing sleeve 233 has an annular shape, and the axial center position of the rotation preventing sleeve 233 is provided with an axial rotation preventing through hole 243 which is engaged with the lock nut 232, and an axial projection is formed on one end surface of the rotation preventing sleeve 233. The turning boss 244 has a resisting position of the rotation preventing boss 244 in the circumferential direction and toward the screw unscrewing direction. The hole wall of the through hole 243 is an inner gear shape that cooperates with the outer gear shape of the lock nut 235 of the lock nut 232. The hole wall of the rotation stop hole 243 is provided with a plurality of uniform circumferential juxtaposed triangular grooves. A single triangular groove on the wall of the hole of the through hole 243 forms a rotation preventing sleeve inner rotation portion 237 which cooperates with the nut rotation preventing portion 236. The hole wall of the rotation preventing sleeve 233 is uniformly distributed in three semicircles for accommodating The glue tank 246 of the fixing glue 245.
紧固连接结构包括紧固连接组件、母体248、附体247。The fastening connection structure includes a fastening connection assembly, a base 248, and an attachment 247.
附体247上设有与螺杆231的外螺纹部239配合的通孔251,在附体247背离母体248的一侧设有与止转凸台244间隙配合的止转圆孔252。The attachment body 247 is provided with a through hole 251 that cooperates with the external thread portion 239 of the screw 231. On the side of the attachment body 247 that faces away from the base 248, a rotation preventing hole 252 that is in clearance engagement with the rotation preventing boss 244 is provided.
母体248上设有与螺杆231的外螺纹部239配合的通孔250,在母体248背离附体247的一侧设有与止转凸台242间隙配合的圆止转孔249。The base 248 is provided with a through hole 250 that cooperates with the external thread portion 239 of the screw 231. A side of the base 248 facing away from the attachment 247 is provided with a circular rotation hole 249 that is in clearance with the rotation preventing boss 242.
螺杆231的外螺纹部239依次穿过母体248上的通孔250、附体247上的通孔251且螺杆231的止转凸台242插入母体248的圆止转孔249中,螺杆231与锁紧螺母232螺纹连接,螺杆231的头部241轴向抵挡母体248,锁紧螺母232轴向抵挡附体247,螺杆231和锁紧螺母232将母体248与附体247紧固连接在一起。螺杆231的止转凸台242插入母体248的圆止转孔249中约束螺杆231相对母体248旋转。The external thread portion 239 of the screw 231 sequentially passes through the through hole 250 in the female body 248, the through hole 251 in the attached body 247, and the rotation preventing boss 242 of the screw 231 is inserted into the circular rotation preventing hole 249 of the female body 248, the screw 231 and the lock The nut 232 is screwed. The head 241 of the screw 231 axially resists the base 248. The lock nut 232 axially resists the attachment 247. The screw 231 and the lock nut 232 fasten the base 248 and the attachment 247 together. The rotation preventing boss 242 of the screw 231 is inserted into the circular rotation preventing hole 249 of the female body 248 to restrain the screw 231 from rotating relative to the female body 248.
止转套233安装在锁紧螺母232外,止转凸台244的抵挡位置靠近附体247的止转圆孔252或与止转圆孔252接触,止转套233的止转套内止转部237置于锁紧螺母232的螺母止转部236外且止转套233的止转凸台244插入附体247的止转圆孔252中,在胶槽246与胶槽246相邻的螺母止转部236和止转套内止转部237的间隙间填充有固定胶245,固定胶245将止转套233固定在锁紧螺母232外对止转套233轴向限位。止转凸台244在朝向锁紧螺母232旋松方向的一侧被附体247的止转圆孔252抵挡、止转套233安装在锁紧螺母232外共同约束止转套233相对附体247旋转,螺母止转部236与止转套内止转部237配合约束止转套233相对锁紧螺母232旋转,母体248和附体247无相对旋转,因此螺杆231、锁紧螺母232不可旋转地与母体248和附体247安装在一起。The rotation preventing sleeve 233 is installed outside the lock nut 232, and the resisting position of the rotation preventing boss 244 is close to the rotation preventing hole 252 of the attachment body 247 or is in contact with the rotation preventing hole 252, and the rotation preventing sleeve of the rotation preventing sleeve 233 is stopped. The portion 237 is disposed outside the nut rotation preventing portion 236 of the lock nut 232 and the rotation preventing boss 244 of the rotation preventing sleeve 233 is inserted into the rotation preventing hole 252 of the attachment body 247, and the nut adjacent to the glue groove 246 in the glue groove 246. The fixing glue 245 is filled between the gap of the rotation preventing portion 236 and the rotation preventing portion 237 of the rotation preventing sleeve, and the fixing rubber 245 fixes the rotation preventing sleeve 233 to the outside of the locking nut 232 to axially limit the rotation preventing sleeve 233. The rotation preventing boss 244 is resisted by the rotation preventing hole 252 of the attachment body 247 on the side facing the unscrewing direction of the lock nut 232, and the rotation preventing sleeve 233 is mounted outside the lock nut 232 to jointly restrain the rotation preventing sleeve 233 with respect to the attached body 247. Rotating, the nut rotation preventing portion 236 and the rotation preventing sleeve inner rotation preventing portion 237 cooperate with the rotation preventing sleeve 233 to rotate relative to the locking nut 232, and the mother body 248 and the attachment body 247 are not relatively rotated, so the screw 231 and the lock nut 232 are non-rotatably It is mounted with the parent body 248 and the appendage 247.
实施例11Example 11
如图24、图25所示,与实施例2不同的是,螺杆300包括依次排列的头部301、圆柱形的光杆部302、外螺纹部303。As shown in FIGS. 24 and 25, unlike the second embodiment, the screw 300 includes a head portion 301, a cylindrical optical rod portion 302, and a male screw portion 303 which are sequentially arranged.
锁紧螺母304包括依次排列的夹持部305、止转部306和圆柱形的安装部307,止转部306径向凸出安装部307,夹持部305径向凸出止转部306。在安装部307上设有与周向的卡槽308。 The lock nut 304 includes a clamping portion 305, a rotation preventing portion 306, and a cylindrical mounting portion 307 which are sequentially arranged. The rotation preventing portion 306 radially protrudes from the mounting portion 307, and the clamping portion 305 radially protrudes from the rotation preventing portion 306. A card slot 308 is provided on the mounting portion 307 in the circumferential direction.
紧固连接结构与实施例1不同的是,卡环309的抵挡凸部310通过弹性变形卡在锁紧螺母304的安装部307的卡槽308内对止转套311背离附体312的一侧轴向限位。The fastening structure is different from that of the first embodiment in that the resisting projection 310 of the snap ring 309 is elastically deformed into the slot 308 of the mounting portion 307 of the lock nut 304 to the side of the rotation preventing sleeve 311 facing away from the attachment 312. Axial limit.
实施例12Example 12
如图26、图27所示,与实施例3不同的是,紧固连接组件还包括螺杆止转片330。As shown in FIGS. 26 and 27, unlike the third embodiment, the fastening joint assembly further includes a screw rotation preventing piece 330.
螺杆331包括依次排列的限位部332、外周为外齿轮形的抵挡止转部333、光杆部334和外螺纹部335。限位部332径向凸出抵挡止转部333,抵挡止转部333径向凸出光杆部334。在抵挡止转部333的外周设有多个均匀周向排列的三角形齿,一个三角形齿形成一个螺杆止转部336。The screw 331 includes a stopper portion 332 that is sequentially arranged, an abutment rotation preventing portion 333 whose outer circumference is an external gear shape, a polished rod portion 334, and a male screw portion 335. The limiting portion 332 radially protrudes against the rotation preventing portion 333, and the resisting rotation portion 333 radially protrudes from the polished rod portion 334. A plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the resisting rotation preventing portion 333, and one triangular tooth forms a screw rotation preventing portion 336.
螺杆止转片330为带圆角的正方形,螺杆止转片330的中心位置设有与螺杆331的外齿轮形的抵挡止转部333配合的内齿轮形的垫片止转通孔337,垫片止转通孔337的孔壁上设有多个均匀周向分布的三角形槽,在螺杆止转片330相对的两侧从垫片的底面上凸设有尖角形的嵌入边344(觉得这种方式用起来不好)。垫片止转通孔337的孔壁上的单个三角形槽形成一个与螺杆止转部336配合的垫片止转部338。The screw rotation preventing piece 330 is a square having rounded corners, and the center position of the screw rotation preventing piece 330 is provided with an inner gear-shaped gasket rotation preventing through hole 337 which is engaged with the outer gear-shaped abutting rotation preventing portion 333 of the screw 331, and the pad A plurality of evenly circumferentially distributed triangular grooves are formed in the wall of the hole-stopping hole 337, and a pointed-shaped embedded edge 344 is protruded from the bottom surface of the spacer on opposite sides of the screw-stopping piece 330. This method is not good enough). A single triangular groove on the wall of the gasket stop through hole 337 forms a gasket stop portion 338 that cooperates with the screw stop portion 336.
螺杆331的外螺纹部335依次穿过螺杆止转片330的垫片止转通孔337、母体339上的通孔340、附体341上的通孔342与锁紧螺母343螺纹连接,螺杆331的抵挡止转部333置于螺杆止转片330的垫片止转通孔337内,螺杆331的限位部332朝向抵挡止转部333的端面抵挡螺杆止转片330,螺杆止转片330的嵌入边344嵌入母体339并产生静摩擦约束螺杆止转片330相对母体339旋转,三角形齿的螺杆止转部336插入三角形槽的垫片止转部338约束螺杆331相对母体339旋转,螺杆331不可旋转地与母体339安装在一起。The external thread portion 335 of the screw 331 sequentially passes through the gasket rotation preventing through hole 337 of the screw rotation preventing piece 330, the through hole 340 of the female body 339, and the through hole 342 of the attachment body 341 to be screwed with the lock nut 343, and the screw 331 The resisting rotation preventing portion 333 is disposed in the gasket rotation preventing through hole 337 of the screw rotation preventing piece 330, and the limiting portion 332 of the screw 331 abuts against the screw rotation preventing piece 330 toward the end surface of the resisting rotation preventing portion 333, and the screw rotation preventing piece 330 The inserting edge 344 is embedded in the mother body 339 and generates a static friction constraint. The screw rotation preventing piece 330 is rotated relative to the mother body 339. The screw rotation preventing portion 336 of the triangular tooth is inserted into the triangular groove. The rotation preventing portion 338 of the triangular groove supports the rotation of the screw 331 with respect to the mother body 339. It is rotatably mounted with the mother body 339.
实施例13Example 13
如图28、图29所示,与实施例3不同的是,紧固连接组件还包括止转垫360。As shown in FIGS. 28 and 29, unlike the third embodiment, the fastening connection assembly further includes a rotation preventing pad 360.
止转垫360的轴心位置设有与螺杆361的外螺纹部362间隙配合的圆中心通孔363,止转垫360的端面设有一个与止转套364的止转凸台365间隙配合的垫片圆止转通孔366。圆中心通孔363的外周端面上轴向凸出一个止转垫凸台367。止转垫360的最大外径大于止转套364的止转通孔368的最大内径。The axial center position of the rotation preventing pad 360 is provided with a circular center through hole 363 which is in clearance with the external thread portion 362 of the screw 361. The end surface of the rotation preventing pad 360 is provided with a clearance fit with the rotation preventing boss 365 of the rotation preventing sleeve 364. The shim rounds the through hole 366. A rotation preventing pad boss 367 is axially projected on the outer peripheral end surface of the circular center through hole 363. The maximum outer diameter of the anti-rotation pad 360 is greater than the maximum inner diameter of the anti-rotation through hole 368 of the anti-rotation sleeve 364.
附体369背离母体370的一侧设有与止转垫360的止转垫凸台367间隙配合的止转圆孔371。The side of the attachment body 369 facing away from the mother body 370 is provided with a rotation preventing hole 371 which is in clearance fit with the rotation preventing pad boss 367 of the rotation preventing pad 360.
螺杆361的外螺纹部362依次穿过母体370上的通孔372、附体369上的通孔373、止转垫360的圆中心通孔363,且螺杆361的止转凸台374插入母体370的圆止转孔375中,止转垫360的止转垫凸台367插入附体369的止转圆孔371中,螺杆361与锁紧螺母376螺纹连接将母体370、附体369和止转垫360安装在一起。止转垫360的止转垫凸台367与附体369的止转圆孔371配合约束止转垫360相对附体369旋转。The external thread portion 362 of the screw 361 sequentially passes through the through hole 372 of the female body 370, the through hole 373 of the attachment body 369, the circular center through hole 363 of the rotation preventing pad 360, and the rotation preventing boss 374 of the screw 361 is inserted into the female body 370. In the circular rotation hole 375, the rotation preventing pad boss 367 of the rotation preventing pad 360 is inserted into the rotation preventing hole 371 of the attachment body 369, and the screw 361 is screwed with the lock nut 376 to connect the mother body 370, the attachment body 369 and the rotation stop. Pads 360 are mounted together. The rotation preventing pad boss 367 of the rotation preventing pad 360 and the rotation preventing hole 371 of the attachment body 369 cooperate with the restraining rotation preventing pad 360 to rotate relative to the attachment body 369.
止转套364安装在锁紧螺母376外,止转套364的止转凸台365插入止转垫360的垫片圆止转通孔366中,止转套364的止转凸台365与止转垫360的垫片圆止转通孔366配合约束止转套364相对止转垫360旋转。The rotation preventing sleeve 364 is mounted outside the lock nut 376, and the rotation preventing boss 365 of the rotation preventing sleeve 364 is inserted into the gasket rounding through hole 366 of the rotation preventing sleeve 360, and the rotation preventing boss 365 of the rotation preventing sleeve 364 is stopped. The washer round stop through hole 366 of the rotary pad 360 cooperates with the restraining rotation sleeve 364 to rotate relative to the rotation stop pad 360.
实施例14Example 14
如图30、图31所示,一种紧固连接组件,包括螺杆461、止转垫462、锁紧螺母463、止转套464。As shown in FIG. 30 and FIG. 31, a fastening connection assembly includes a screw 461, a rotation preventing pad 462, a lock nut 463, and a rotation preventing sleeve 464.
螺杆461包括与锁紧螺母463的螺纹通孔465配合的外螺纹部466、和正六角形的头部484,头部484朝向外螺纹部466的端面轴向凸出一个止转凸台467。The screw 461 includes an externally threaded portion 466 that mates with the threaded through hole 465 of the lock nut 463, and a right hexagonal head portion 484 that projects axially toward the end surface of the externally threaded portion 466 by a rotation preventing boss 467.
锁紧螺母463为阶梯形,包括正六角形的夹持部468和外齿轮形的止转部469,轴心位置设有与外螺纹部466配合的螺纹通孔465,止转部469径向凸出夹持部468。设有夹持部468,在安装和拆卸锁紧螺母463时,便于扳手夹持锁紧螺母463。在止转部469的外周设有多个均匀周向排列的三角形齿,一个三角形齿形成一个螺母止转部470。The lock nut 463 has a stepped shape and includes a positive hexagonal clamping portion 468 and an outer gear-shaped rotation preventing portion 469. The axial center position is provided with a threaded through hole 465 that cooperates with the externally threaded portion 466, and the rotation preventing portion 469 is radially convex. The clamping portion 468 is taken out. A clamping portion 468 is provided to facilitate the clamping of the locking nut 463 by the wrench when the locking nut 463 is installed and removed. A plurality of triangular teeth uniformly arranged in the circumferential direction are provided on the outer circumference of the rotation preventing portion 469, and one triangular tooth forms a nut rotation preventing portion 470.
止转垫462为圆形板状冲压件,轴心位置设有与螺杆461的外螺纹部466配合的通孔471,通孔471的最大内径小于锁紧螺母463的最大外径,止转垫462的端面设有一个与止转套464的止转凸台475间隙配合的垫片止转通孔472,止转垫462沿通孔471的周边向一侧周向均布多个冲压形成的嵌入齿473,所述的嵌入齿473为楔形。The rotation preventing pad 462 is a circular plate-shaped stamping member, and the shaft center is provided with a through hole 471 that cooperates with the external thread portion 466 of the screw 461. The maximum inner diameter of the through hole 471 is smaller than the maximum outer diameter of the lock nut 463, and the rotation preventing pad The end surface of the 462 is provided with a gasket stop through hole 472 which is matched with the rotation preventing boss 475 of the rotation preventing sleeve 464. The rotation preventing pad 462 uniformly distributes a plurality of stamped embedded teeth toward the one side of the through hole 471. 473, the embedded tooth 473 is wedge-shaped.
止转套464为圆环状,止转套464的轴心位置设有与锁紧螺母463配合的轴向的止转通孔474,在止转套464的一个端面上轴向凸出一个止转凸台475,止转凸台475的抵挡位置在周向方向、朝向螺杆旋松方向。止转通孔474的孔壁为与锁紧螺母463的外齿轮形状的止转部469配合的内齿轮形状,止转通孔474的孔壁上设有多个均匀周向并列的三角形槽,止转通孔474的孔壁上的单个三角形槽形成一个与螺母止转部470配合的止转套内止转部476,止转套464的孔壁周向均布三个半圆形用来容置固定胶477的胶槽478。 The rotation sleeve 464 is annular, and the axial position of the rotation sleeve 464 is provided with an axial rotation preventing through hole 474 which cooperates with the lock nut 463, and an axial projection on one end surface of the rotation sleeve 464 The turning boss 475 has a resisting position of the rotation preventing boss 475 in the circumferential direction and toward the screw unscrewing direction. The hole wall of the through hole 474 is an inner gear shape that cooperates with the outer gear shape of the lock nut 469 of the lock nut 463. The hole wall of the stop through hole 474 is provided with a plurality of uniform circumferential juxtaposed triangular grooves. A single triangular groove on the wall of the hole of the through hole 474 forms a rotation preventing inner rotation portion 476 which cooperates with the nut rotation preventing portion 470. The hole wall of the rotation preventing sleeve 464 is uniformly distributed in three semicircles for accommodating The glue tank 478 of the fixing glue 477.
紧固连接结构包括紧固连接组件、母体479、附体480。The fastening connection structure includes a fastening connection assembly, a mother body 479, and an attachment body 480.
附体480上设有与螺杆461的外螺纹部466配合的通孔481,附体480的硬度小于止转垫462的嵌入齿473的硬度。The attachment body 480 is provided with a through hole 481 that cooperates with the external thread portion 466 of the screw 461. The hardness of the attachment body 480 is smaller than the hardness of the insertion tooth 473 of the rotation preventing pad 462.
母体479上设有与螺杆461的外螺纹部466配合的通孔482,在母体479背离附体480的一侧设有与止转凸台467间隙配合的圆止转孔483。The base body 479 is provided with a through hole 482 that cooperates with the external thread portion 466 of the screw 461. On the side of the parent body 479 that faces away from the attachment body 480, a circular rotation preventing hole 483 that is in clearance with the rotation preventing boss 467 is provided.
螺杆461的外螺纹部466依次穿过母体479上的通孔482、附体480上的通孔481、止转垫462的通孔471与锁紧螺母463螺纹连接,螺杆461的止转凸台467插入母体479的圆止转孔483中,螺杆461不可旋转地安装在母体479上,锁紧螺母463轴向抵挡止转垫462,止转垫462的嵌入齿473嵌入附体480中约束止转垫462相对附体480旋转,螺杆461和锁紧螺母463将母体479、附体480与止转垫462紧固连接在一起。The external thread portion 466 of the screw 461 sequentially passes through the through hole 482 on the female body 479, the through hole 481 on the attached body 480, and the through hole 471 of the rotation preventing pad 462 are screwed with the lock nut 463, and the rotation preventing boss of the screw 461 467 is inserted into the circular rotation hole 483 of the female body 479. The screw 461 is non-rotatably mounted on the female body 479. The lock nut 463 axially abuts the rotation preventing pad 462, and the embedded tooth 473 of the rotation preventing pad 462 is embedded in the attachment body 480. The rotating pad 462 is rotated relative to the attached body 480, and the screw 461 and the lock nut 463 fasten the female body 479, the appendage 480 and the anti-rotation pad 462 together.
止转套464安装在锁紧螺母463外,止转凸台475的抵挡位置靠近垫片止转通孔472或与垫片止转通孔472接触,,三角形齿的螺母止转部470插入相应的三角形槽的止转套内止转部476内,止转套464的止转凸台475插入垫片止转通孔472中,在胶槽478与胶槽478相邻的螺母止转部470和止转套内止转部476的间隙间填充有固定胶477,固定胶477将止转套464固定在锁紧螺母463外对止转套464轴向限位。止转凸台475在朝向止转垫462旋松方向的一侧被垫片止转通孔472抵挡、止转套464安装在锁紧螺母463外共同约束止转套464相对止转垫462旋转,螺母止转部470与止转套内止转部476配合约束止转套464相对锁紧螺母463旋转,母体479和附体480无相对旋转,因此螺杆461、锁紧螺母463不可旋转地与母体479和附体480安装在一起。The rotation preventing sleeve 464 is installed outside the lock nut 463, and the resisting position of the rotation preventing boss 475 is close to or in contact with the gasket rotation preventing through hole 472, and the nut rotation preventing portion 470 of the triangular tooth is inserted correspondingly. In the triangular groove of the anti-rotation sleeve inner rotation preventing portion 476, the rotation preventing boss 475 of the rotation preventing sleeve 464 is inserted into the gasket rotation preventing through hole 472, and the nut rotation preventing portion 470 adjacent to the rubber tank 478 in the rubber tank 478. A fixing glue 477 is filled between the gaps of the rotation preventing portion 476 of the rotation preventing sleeve, and the fixing rubber 477 fixes the rotation preventing sleeve 464 to the outside of the locking nut 463 to axially limit the rotation preventing sleeve 464. The rotation preventing boss 475 is resisted by the gasket rotation preventing through hole 472 on the side facing the unscrewing direction of the rotation preventing pad 462, and the rotation preventing sleeve 464 is installed outside the locking nut 463 to jointly restrain the rotation preventing sleeve 464 from rotating relative to the rotation preventing pad 462. The nut rotation preventing portion 470 cooperates with the rotation preventing sleeve inner rotation preventing portion 476 to rotate the restraining rotation sleeve 464 relative to the locking nut 463, and the mother body 479 and the attachment body 480 are not relatively rotated, so the screw 461 and the lock nut 463 are non-rotatably coupled with The parent body 479 and the appendage 480 are mounted together.
实施例15Example 15
如图32、图33所示,与实施例14不同的是,锁紧螺母501的夹持部502径向凸出止转部503。As shown in FIGS. 32 and 33, unlike the fourteenth embodiment, the holding portion 502 of the lock nut 501 protrudes radially from the rotation preventing portion 503.
止转套504包括环状的止转套本体505,在止转套本体505的轴心位置设有中心通孔506,在中心通孔506的孔壁上均匀分布三个弹性臂507。每个弹性臂507包括从中心通孔506的孔壁径向向内形成的水平凸部508、轴向向上再径向向内再轴向下形成的U形弹性臂509,从U形弹性臂509的端部径向向内形成限位部510、在三个限位部510的内侧面上设有与锁紧螺母501外齿轮形状的止转部503部分配合的内齿轮形状的多个均匀周向排列的三角形槽,限位部510的内侧面上的单个三角形槽成一个与螺母止转部511配合的止转套内止转部512,三个限位部510的内侧面上的三角形槽的槽壁围合形成非闭合的止转通孔513。止转套504背离U形弹性臂509的端面上轴向凸出一个止转凸台514。The anti-rotation sleeve 504 includes an annular anti-rotation sleeve body 505. The central through-hole 506 is disposed at the axial center of the anti-rotation sleeve body 505, and three elastic arms 507 are evenly distributed on the wall of the central through-hole 506. Each of the resilient arms 507 includes a horizontal projection 508 formed radially inward from the bore wall of the central through bore 506, a U-shaped resilient arm 509 axially upwardly and then radially inwardly and axially downwardly formed, from the U-shaped resilient arm The end portion of the 509 is formed with the stopper portion 510 radially inwardly, and the inner surface of the three stopper portions 510 is provided with a plurality of uniform shapes of the internal gear that partially engages with the rotation preventing portion 503 of the outer shape of the lock nut 501. a circumferentially arranged triangular groove, a single triangular groove on the inner side surface of the limiting portion 510 is formed into a rotation preventing sleeve inner rotation preventing portion 512 engaged with the nut rotation preventing portion 511, and a triangular shape on the inner side surface of the three limiting portions 510 The groove wall of the groove is enclosed to form a non-closed through hole 513. A rotation preventing boss 514 is axially projected from the end surface of the rotation preventing sleeve 504 away from the U-shaped elastic arm 509.
紧固连接结构与实施例1不同的是,锁紧螺母501的止转部503朝向附体515。止转套504的U形弹性臂509通过弹性变形置于锁紧螺母501的止转部503外且止转套504的止转凸台514插入止转垫515的垫片止转通孔516中,止转套504的限位部510被锁紧螺母501的夹持部502朝向附体515的端面抵挡对止转套504背离附体515的一侧轴向限位。The fastening connection structure is different from that of the first embodiment in that the rotation preventing portion 503 of the lock nut 501 faces the attachment body 515. The U-shaped elastic arm 509 of the rotation preventing sleeve 504 is placed outside the rotation preventing portion 503 of the lock nut 501 by elastic deformation, and the rotation preventing boss 514 of the rotation preventing sleeve 504 is inserted into the gasket rotation preventing through hole 516 of the rotation preventing pad 515. The limiting portion 510 of the rotation preventing sleeve 504 is axially restrained by the clamping portion 502 of the locking nut 501 toward the end surface of the attachment body 515 against the side of the rotation preventing sleeve 504 facing away from the attachment body 515.
实施例16Example 16
如图34至图36所示,与实施例15不同的是,螺杆止转垫521的两个端面均为光滑的面,不设有用来增大摩擦的摩擦颗粒或嵌入凸起等。As shown in Figs. 34 to 36, unlike the fifteenth embodiment, both end faces of the screw rotation preventing pad 521 are smooth faces, and friction particles or embedding projections for increasing friction are not provided.
锁紧螺母522依次包括外正六角形的夹持部523、止转抵挡部524、定位部525;止转抵挡部524包括与夹持部523相连的止转部526和与定位部525相连、避空用的抵挡部527,抵挡部527径向凸出定位部525,止转部526径向凸出抵挡部527和夹持部523。锁紧螺母522的止转部526的外周设有多个均匀周向排列的梯形齿,一个梯形齿形成一个螺母止转部528。The lock nut 522 includes an outer hexagonal clamping portion 523, a rotation preventing abutting portion 524, and a positioning portion 525. The rotation preventing abutting portion 524 includes a rotation preventing portion 526 connected to the clamping portion 523 and is connected to the positioning portion 525. The damper portion 527 is vacant, and the urging portion 527 radially protrudes from the positioning portion 525. The rotation preventing portion 526 radially protrudes from the dam portion 527 and the nip portion 523. A plurality of evenly circumferentially arranged trapezoidal teeth are provided on the outer circumference of the rotation preventing portion 526 of the lock nut 522, and one trapezoidal tooth forms a nut rotation preventing portion 528.
止转套529包括环状的止转套本体530,在止转套本体530的轴心位置设有中心通孔531,沿止转套本体530的外周和内周同向延伸设有相同高度的外凸环532和内凸环533,在内凸环533上沿内凸环533的顶面向内径向凸设有三个限位部534,沿每个限位部534的周向两侧、以中心通孔531轴心为中心点设有切开内凸环533并部分切开止转套本体530的放射状的直线切槽535,与限位部534相连的内凸环533和止转套本体530形成弹性臂536。在限位部534的内侧面上设有与锁紧螺母522外齿轮形状的止转部526部分配合的内齿轮形状的多个均匀周向排列的轴向的梯形槽,限位部534的内侧面上的梯形槽形成一个与螺母止转部528配合的止转套内止转部537,内凸环533的内侧面上的梯形槽的槽壁围合形成非闭合的止转通孔553。在止转套本体530朝向内凸环533的一侧、内凸环533和外凸环532之间轴向凸出一个止转凸台539。 The rotation preventing sleeve 529 includes an annular rotation preventing sleeve body 530. The central through hole 531 is disposed at the axial center of the rotation preventing sleeve body 530, and the same height is extended along the outer circumference and the inner circumference of the rotation preventing sleeve body 530. The outer convex ring 532 and the inner convex ring 533 have three limiting portions 534 protruding radially on the inner convex ring 533 along the top surface of the inner convex ring 533, along the circumferential sides of each limiting portion 534, with the center The center of the through hole 531 is provided with a radial straight groove 535 which cuts the inner convex ring 533 and partially cuts the rotation preventing sleeve body 530, and the inner convex ring 533 and the rotation preventing sleeve body 530 which are connected to the limiting portion 534. A resilient arm 536 is formed. On the inner side surface of the stopper portion 534, a plurality of axially trapezoidal grooves of a uniform circumferential shape in a shape of an internal gear that partially engages with the rotation preventing portion 526 of the outer shape of the lock nut 522 are provided, and the inside of the limiting portion 534 is provided. The trapezoidal groove on the side surface forms a rotation preventing sleeve inner rotation preventing portion 537 that engages with the nut rotation preventing portion 528, and the groove wall of the trapezoidal groove on the inner side surface of the inner convex ring 533 is closed to form a non-closed rotation preventing through hole 553. A rotation preventing boss 539 is axially projected between a side of the rotation preventing sleeve body 530 facing the inner convex ring 533, an inner convex ring 533 and an outer convex ring 532.
止转垫540轴心位置设有与锁紧螺母522的定位部525间隙配合的圆中心通孔541,止转垫540的端面设有一个与止转套529的止转凸台539间隙配合的垫片圆止转通孔542。止转垫540的两个端面均为光滑的面,不设有用来增大摩擦的摩擦颗粒或嵌入凸起等。The center of the rotation preventing pad 540 is provided with a circular center through hole 541 which is in clearance with the positioning portion 525 of the lock nut 522. The end surface of the rotation preventing pad 540 is provided with a clearance fit with the rotation preventing boss 539 of the rotation preventing sleeve 529. The shim rounds the through hole 542. Both end faces of the rotation preventing pad 540 are smooth faces, and there are no friction particles or embedded protrusions for increasing friction.
在螺杆止转垫521的一个端面上涂满胶,螺杆543的外螺纹部544从螺杆止转垫521未涂有胶的端面伸入螺杆止转垫521的圆中心通孔545、止转凸台552伸入螺杆止转垫521的止转螺杆圆通孔546内,将螺杆止转垫521套在螺杆543上;在止转垫540的一个端面上涂满胶,螺杆543的外螺纹部544再穿过母体548上的通孔549、附体550上的通孔551、在从止转垫540未涂有胶的端面穿过止转垫540的圆中心通孔541与锁紧螺母522螺纹连接,锁紧螺母522和螺杆543将螺杆止转垫521、母体548与附体550、止转垫540紧固连接在一起。锁紧螺母522与螺杆543锁紧的过程中止转垫540与附体550表面粘合在一起、与附体550表面产生很大的粘合力约束止转垫540相对附体550旋转,螺杆止转垫521与母体548表面粘合在一起、与母体548表面产生很大的粘合力约束螺杆止转垫521相对母体548旋转,止转凸台552伸入螺杆止转垫521的止转螺杆圆通孔546约束螺杆543相对螺杆止转垫521旋转,螺杆543、螺杆止转垫521、止转垫540相对母体548和附体550均不可转动。One end surface of the screw rotation preventing pad 521 is coated with glue, and the external thread portion 544 of the screw 543 protrudes from the end surface of the screw rotation preventing pad 521 which is not coated with the rubber into the circular center through hole 545 of the screw rotation preventing pad 521, and the rotation preventing convex portion The table 552 extends into the rotary screw circular through hole 546 of the screw rotation preventing pad 521, and the screw rotation preventing pad 521 is sleeved on the screw 543; the end surface of the rotation preventing pad 540 is coated with glue, and the external thread portion 544 of the screw 543 is attached. Then, the through hole 549 on the mother body 548, the through hole 551 in the appendage 550, the circular center through hole 541 and the lock nut 522 thread passing through the anti-rotation pad 540 from the end face of the anti-rotation pad 540 without the glue. The connection, the lock nut 522 and the screw 543 securely connect the screw rotation preventing pad 521, the female body 548, and the attachment body 550 and the rotation preventing pad 540. During the locking of the lock nut 522 and the screw 543, the surface of the rotating pad 540 is adhered to the surface of the appendage 550, and a large adhesive force is generated on the surface of the appendage 550 to restrict the rotation of the anti-rotation pad 540 relative to the appendage 550. The rotating pad 521 is bonded to the surface of the mother body 548, and has a large adhesive force with the surface of the mother body 548 to restrain the rotation of the screw rotation preventing pad 521 relative to the mother body 548. The rotation preventing protrusion 552 extends into the rotation preventing screw of the screw rotation preventing pad 521. The circular through hole 546 restrains the screw 543 from rotating relative to the screw rotation preventing pad 521, and the screw 543, the screw rotation preventing pad 521, and the rotation preventing pad 540 are both non-rotatable with respect to the parent body 548 and the attachment body 550.
止转套529置于锁紧螺母522的止转部526外、止转套529的弹性臂536通过弹性变形使弹性臂536的限位部534置于锁紧螺母522的抵挡部527外且止转套529的止转凸台539插入止转垫540的垫片圆止转通孔542中,止转套529的限位部534被锁紧螺母522的止转部526朝向附体550的端面抵挡对止转套529背离附体550的一侧轴向限位。The rotation preventing sleeve 529 is placed outside the rotation preventing portion 526 of the lock nut 522, and the elastic arm 536 of the rotation preventing sleeve 529 is elastically deformed so that the limiting portion 534 of the elastic arm 536 is placed outside the resisting portion 527 of the lock nut 522. The rotation preventing boss 539 of the rotary sleeve 529 is inserted into the spacer circular rotation through hole 542 of the rotation preventing pad 540, and the stopper portion 534 of the rotation preventing sleeve 529 is directed toward the end surface of the attachment body 550 by the rotation preventing portion 526 of the lock nut 522. The axial stop of the side of the anti-rotation sleeve 529 away from the attachment 550 is resisted.
实施例17Example 17
如图37、图38所示,与实施例15不同的是,紧固连接组件还包括螺杆止转垫601。As shown in FIGS. 37 and 38, unlike the fifteenth embodiment, the fastening joint assembly further includes a screw rotation preventing pad 601.
螺杆止转垫601为圆形板状冲压件,轴心位置设有与螺杆602的外螺纹部603配合的通孔615,螺杆止转垫601的一个端面设有一个与螺杆602的止转凸台604间隙配合的圆止转通孔605,螺杆止转垫601沿通孔615的周边向一侧周向均布多个冲压形成的嵌入齿606,所述的嵌入齿606为楔形。The screw rotation preventing pad 601 is a circular plate-shaped stamping member, and the shaft center is provided with a through hole 615 that cooperates with the external thread portion 603 of the screw 602. One end surface of the screw rotation preventing pad 601 is provided with a rotation preventing convexity with the screw 602. The table 604 is a clearance-fitted through-hole 605. The screw-stopping pad 601 circumferentially distributes a plurality of stamped embedded teeth 606 along the periphery of the through-hole 615. The embedded teeth 606 are wedge-shaped.
螺杆602的外螺纹部603从螺杆止转垫601背离嵌入齿606的一侧穿过螺杆止转垫601的通孔615且螺杆602的止转凸台604插入螺杆止转垫601的圆止转通孔605内,再穿过母体607上的通孔608、附体609上的通孔610、止转垫611的通孔612与锁紧螺母613螺纹连接,在螺杆602与锁紧螺母613的拧紧过程中,螺杆止转垫601的嵌入齿606嵌入母体607中,锁紧螺母613轴向抵挡止转垫611,螺杆602的头部614轴向抵挡螺杆止转垫601,螺杆止转垫601的嵌入齿606嵌入母体607中约束螺杆止转垫601相对母体607旋转,螺杆602的止转凸台604插入螺杆止转垫601的圆止转通孔605内约束螺杆602相对螺杆止转垫601旋转,螺杆602和锁紧螺母613将母体607、附体609与螺杆止转垫601紧固连接在一起,螺杆602不可旋转地与母体607安装在一起。The external thread portion 603 of the screw 602 passes through the through hole 615 of the screw rotation preventing pad 601 from the side of the screw rotation preventing pad 601 facing away from the fitting tooth 606, and the rotation preventing boss 604 of the screw 602 is inserted into the circular rotation of the screw rotation preventing pad 601. In the through hole 605, the through hole 608 on the base 607, the through hole 610 on the attached body 609, and the through hole 612 of the rotation preventing pad 611 are screwed with the lock nut 613 at the screw 602 and the lock nut 613. During the tightening process, the inserting teeth 606 of the screw rotation preventing pad 601 are embedded in the mother body 607, and the locking nut 613 axially resists the rotation preventing pad 611. The head 614 of the screw 602 axially resists the screw rotation preventing pad 601, and the screw rotation preventing pad 601 The inserting tooth 606 is embedded in the female body 607 to restrain the screw rotation preventing pad 601 from rotating relative to the mother body 607. The rotation preventing boss 604 of the screw 602 is inserted into the circular rotation preventing hole 605 of the screw rotation preventing pad 601 to constrain the screw 602 with respect to the screw rotation preventing pad 601. Rotating, the screw 602 and the lock nut 613 securely couple the parent body 607, the attachment body 609 and the screw rotation preventing pad 601 together, and the screw 602 is non-rotatably mounted with the mother body 607.
实施例18Example 18
如图41、图42所示,与实施例15不同的是,止转垫700为带圆角的正方形且不设有嵌入齿,止转垫700具有弹性,在止转垫700相对的两侧向同一侧弯曲形成尖角形的嵌入边701。锁紧螺母702的止转部703的一端抵挡止转垫700,止转垫700的嵌入边701嵌入母体704并产生静摩擦约束止转垫700相对母体704旋转,止转垫700不可旋转地安装在附体705上。实施例19As shown in FIG. 41 and FIG. 42, unlike the fifteenth embodiment, the anti-rotation pad 700 is a square with rounded corners and is not provided with an embedded tooth, and the anti-rotation pad 700 has elasticity, on opposite sides of the anti-rotation pad 700. Curved to the same side to form a pointed embedded edge 701. One end of the rotation preventing portion 703 of the lock nut 702 abuts against the rotation preventing pad 700. The insertion edge 701 of the rotation preventing pad 700 is inserted into the female body 704 and generates a static frictional restraining rotation preventing pad 700 to rotate relative to the mother body 704. The rotation preventing pad 700 is non-rotatably mounted on the rotation preventing pad 700. Attached to the body 705. Example 19
如图43、图44所示,与实施例18不同的是,紧固连接组件还包括限位件720。As shown in FIG. 43 and FIG. 44, unlike the embodiment 18, the fastening connection assembly further includes a limiting member 720.
锁紧螺母721依次包括夹持部722、止转部723、抵挡部724,止转部723径向凸出夹持部722与避空用的抵挡部724。The lock nut 721 includes a clamping portion 722, a rotation preventing portion 723, and a resisting portion 724 in this order. The rotation preventing portion 723 radially protrudes from the clamping portion 722 and the abutting portion 724 for avoiding the air.
限位件720为塑胶件,包括圆环状的限位件本体725,限位件本体725外周形状与止转套726外周形状配合并相似,限位件本体725内圆直径稍大于锁紧螺母721的止转部723的外径,限位件本体725沿内圆轴向再径向向内凸出三个均匀分布的弹性卡扣727,每个弹性卡扣727的抵挡部728朝向限位件本体725轴心方向,在限位件本体725与弹性卡扣727同侧的端面上凸出六根限位柱729,在限位柱729的端部设有抵挡环730。The limiting member 720 is a plastic member, and includes a ring-shaped limiting member body 725. The outer peripheral shape of the limiting member body 725 is similar to the outer shape of the rotation preventing sleeve 726, and the inner diameter of the limiting member body 725 is slightly larger than the locking nut. The outer diameter of the rotation preventing portion 723 of the 721, the limiting member body 725 protrudes radially inwardly along the inner circular axis to three evenly distributed elastic buckles 727, and the resisting portion 728 of each elastic buckle 727 faces the limit. In the axial direction of the body 725, six limiting posts 729 protrude from the end faces of the limiting body 725 and the elastic buckle 727, and a resisting ring 730 is disposed at the end of the limiting post 729.
止转套726为金属件,包括中心设有止转通孔731的圆环状的止转套本体732,在止转通孔731的孔壁周向均布三个避空限位件720的弹性卡扣727的避空槽733,在止转通孔731不设有避空槽733的位置均匀排列有尖角形齿的止转套内止转部734,在止转套726上设有六个周向分布的轴向的、与限位件720的限位柱729配合的安装孔735,在止转套726的外周设有三个用来取出限位件720的夹持槽736。The anti-rotation sleeve 726 is a metal member, and includes an annular anti-rotation sleeve body 732 having a rotation-stopping hole 731 in the center, and three elastic cards of the air-tight limiting member 720 are uniformly distributed in the circumferential direction of the hole wall of the anti-rotation through hole 731. The escape groove 733 of the buckle 727 has a rotation preventing sleeve inner rotation preventing portion 734 in which the corner preventing teeth are uniformly arranged at the position where the through hole 731 is not provided with the cutout groove 733, and the rotation preventing sleeve 726 is provided with six circumferences. The mounting hole 735 of the distributed axial direction of the limiting post 729 of the limiting member 720 is provided with three clamping grooves 736 for taking out the limiting member 720 on the outer circumference of the rotation preventing sleeve 726.
将加工完成后的止转套726放入成型限位件720的注塑模具中,注塑成型限位件720,这样 限位件720的限位柱729穿过止转套726的安装孔735、通过限位柱729的抵挡环730将限位件720固定在止转套726上,弹性卡扣727置于止转套726的避空槽733中。The finished rotation sleeve 726 is placed in the injection mold of the molding limit member 720, and the stopper 720 is injection molded. The limiting post 729 of the limiting member 720 passes through the mounting hole 735 of the rotation preventing sleeve 726, and the limiting member 720 is fixed on the rotation preventing sleeve 726 through the resisting ring 730 of the limiting post 729, and the elastic buckle 727 is placed at the rotation stop The sleeve 726 is in the cutout 733.
止转垫737的外周包括连接关于中心轴对称的两圆弧面,连接两圆弧面的平行的两平面,止转垫737的嵌入边739为两圆弧边。The outer circumference of the rotation preventing pad 737 includes two circular arc surfaces that are symmetric about the central axis, and two parallel planes that connect the two circular arc surfaces. The embedded side 739 of the rotation preventing pad 737 has two circular arc sides.
止转套726与限位件720一同安装在锁紧螺母721外,止转套本体732安装在锁紧螺母721的止转部723外,限位件720的弹性卡扣727通过弹性变形被止转部723朝向抵挡部724的端面抵挡对止转套726背离附体740的一侧轴向限位。The rotation sleeve 726 is mounted outside the lock nut 721 together with the stopper 720. The rotation sleeve body 732 is mounted outside the rotation preventing portion 723 of the lock nut 721, and the elastic buckle 727 of the stopper 720 is stopped by elastic deformation. The end portion of the rotating portion 723 facing the resisting portion 724 is axially restrained from the side of the rotation preventing sleeve 726 that faces away from the attachment 740.
实施例20Example 20
如图45、图46所示,一种紧固连接结构,包括紧固连接组件、被连接件1031。As shown in FIG. 45 and FIG. 46, a fastening connection structure includes a fastening connection assembly and a connected member 1031.
紧固连接组件包括U形的螺纹连接件1032、两个结构相同的锁紧螺母1033,两个结构相同的止转套1034,两个结构相同的抵挡螺母1035。The fastening connection assembly comprises a U-shaped threaded connection 1032, two identically configured lock nuts 1033, two identically configured rotation sleeves 1034, and two identically configured resisting nuts 1035.
螺纹连接件1032包括U形的螺纹连接件本体1036,螺纹连接件本体1036的两端均设有外螺纹部1037,外螺纹部1037的外径小于螺纹连接件本体1036的外径,两个外螺纹部1037相互平行且垂直螺纹连接件本体1036相应的端面。The threaded connector 1032 includes a U-shaped threaded connector body 1036. Both ends of the threaded connector body 1036 are provided with external threaded portions 1037. The outer diameter of the externally threaded portion 1037 is smaller than the outer diameter of the threaded connector body 1036. The threaded portions 1037 are parallel to each other and are perpendicular to the corresponding end faces of the threaded connector body 1036.
锁紧螺母1033为外六角螺母,锁紧螺母1033的外周的六个平面形成周向排列的六个螺母止转部1038,轴心位置设有螺纹通孔1039。The lock nut 1033 is a hexagonal nut. The six planes of the outer circumference of the lock nut 1033 form six nut-rotation portions 1038 arranged circumferentially, and a threaded through hole 1039 is provided at the axial center.
止转套1034的轴心位置设有与锁紧螺母1033配合的轴向的止转通孔1040,在止转套1034的一个端面上轴向凸出一个止转凸台1041,止转凸台1041的抵挡位置在周向方向、朝向螺杆旋松方向。止转通孔1040的孔壁为两个结构相同的正六角形孔旋转30°的相交结构,在止转通孔1040的孔壁上形成十二个尖角形凹槽,每个尖角形凹槽由正六角形孔的两相交平面形成,尖角形凹槽的两相交平面形成与锁紧螺母1033的螺母止转部1038配合的止转套内止转部1042。The axial center position of the rotation preventing sleeve 1034 is provided with an axial rotation preventing through hole 1040 that cooperates with the lock nut 1033, and an anti-rotation boss 1041 is axially protruded on one end surface of the rotation preventing sleeve 1034, and the rotation preventing boss The resisting position of 1041 is in the circumferential direction, toward the screw unscrewing direction. The hole wall of the through hole 1040 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the wall of the hole of the through hole 1040, and each of the pointed grooves is formed by The two intersecting planes of the regular hexagonal holes are formed, and the two intersecting planes of the pointed recessed grooves form the anti-rotation sleeve inner rotation preventing portion 1042 that cooperates with the nut rotation preventing portion 1038 of the lock nut 1033.
抵挡螺母1035轴心位置设有螺纹通孔1046,螺纹通孔1046连通避空锁紧螺母1033的避空孔1043。The axial position of the resisting nut 1035 is provided with a threaded through hole 1046, and the threaded through hole 1046 is connected to the hollow hole 1043 of the hollow lock nut 1033.
被连接件1031上设有两个与所述的螺纹连接件1032的外螺纹部1037配合的通孔1044,两个通孔1044的轴线距离与两个外螺纹部1037的轴线距离相等,被连接件1031朝向止转套1034的一侧设有与止转凸台1041间隙配合的止转圆孔1045。The connecting member 1031 is provided with two through holes 1044 which cooperate with the external threaded portion 1037 of the threaded connecting member 1032. The axial distance between the two through holes 1044 is equal to the axial distance of the two externally threaded portions 1037, and is connected. A side of the piece 1031 facing the rotation preventing sleeve 1034 is provided with a rotation preventing hole 1045 which is in clearance with the rotation preventing boss 1041.
螺纹连接件1032两端的外螺纹部1037分别穿过被连接件1031上相应的通孔1044与相应的锁紧螺母1033螺纹连接,被连接件1031上的两个通孔1044约束螺纹连接件1032相对被连接件1031旋转,螺纹连接件本体1036轴向抵挡被连接件1031一侧,锁紧螺母1033轴向抵挡被连接件1031另一侧,螺纹连接件1032两端的锁紧螺母1033将螺纹连接件1032和被连接件1031紧固连接在一起。The externally threaded portions 1037 at both ends of the threaded connector 1032 are respectively threadedly connected to the corresponding locknuts 1033 through the corresponding through holes 1044 of the connected member 1031, and the two through holes 1044 on the connector 1031 constrain the threaded connectors 1032 to be opposite each other. When the connecting member 1031 is rotated, the threaded connector body 1036 axially abuts the side of the connected member 1031, the lock nut 1033 axially abuts the other side of the connected member 1031, and the locking nut 1033 at both ends of the threaded connecting member 1032 connects the threaded connecting member The 1032 and the connected member 1031 are fastened together.
止转套1034安装在锁紧螺母1033外,止转凸台1041的抵挡位置靠近止转圆孔1045或与止转圆孔1045接触,螺母止转部1038与止转套内止转部1042配合约束锁紧螺母1033相对止转套1034旋转,止转凸台1041在朝向锁紧螺母1033旋松方向的一侧被止转圆孔1045抵挡、止转套1034安装在锁紧螺母1033外共同约束止转套1034相对被连接件1031旋转,抵挡螺母1035将止转套1034轴向限位在锁紧螺母1033的螺母止转部1038外,螺纹连接件1032两端的锁紧螺母1033与螺纹连接件1032、被连接件1031不可旋转地安装在一起。The rotation preventing sleeve 1034 is installed outside the lock nut 1033, and the resisting position of the rotation preventing boss 1041 is close to the rotation preventing hole 1045 or is in contact with the rotation preventing hole 1045, and the nut rotation preventing portion 1038 is matched with the rotation preventing portion 1042 of the rotation preventing sleeve. The restraining lock nut 1033 rotates relative to the rotation preventing sleeve 1034. The rotation preventing boss 1041 is resisted by the rotation preventing hole 1045 on the side facing the loosening direction of the lock nut 1033, and the rotation preventing sleeve 1034 is installed outside the locking nut 1033. The rotation sleeve 1034 is rotated relative to the connected member 1031. The resisting nut 1035 axially limits the rotation sleeve 1034 outside the nut rotation portion 1038 of the lock nut 1033. The lock nut 1033 and the threaded connection member at both ends of the threaded connection member 1032 1032, the connected members 1031 are non-rotatably mounted together.
实施例21Example 21
如图47至图49所示,与实施例5不同的是,沿止转通孔1071的外周周向均布三个方形的避空通孔1072,在止转套1073的外周设有三个夹持槽。止转通孔1071为闭合的内齿轮形孔。As shown in FIG. 47 to FIG. 49, unlike the fifth embodiment, three square-shaped escape holes 1072 are uniformly arranged along the outer circumferential direction of the rotation preventing through hole 1071, and three holding grooves are provided on the outer circumference of the rotation preventing sleeve 1073. . The through hole 1071 is a closed inner gear hole.
限位件1074包括圆环状的限位件本体1075,在限位件本体1075的中心位置设有中心通孔1076,中心通孔1076的最小孔径大于止转通孔1071的最大孔径。在中心通孔1076的孔壁周向均布三个凹槽1077,垂直限位件本体1075的端面、对应每个凹槽1077均同侧设有与每个凹槽1077的底面齐平的第一弹性臂1078,沿第一弹性臂1078端部向中心通孔1076的轴心圆弧弯曲的弧形弹性臂1079,沿弧形弹性臂1079的端部再垂直向下形成第二弹性臂1080,在第二弹性臂1080的端部向中心通孔1076轴心水平弯折形成限位部1081。第一弹性臂1078、第二弹性臂1080关于弧形弹性臂1079的轴心线对称。第一弹性臂1078、弧形弹性臂1079、第二弹性臂1080形成U形弹性臂1082。限位部1081与限位件本体1075在同一平面。限位件本体1075的外径小于止转套1073的外径。U形弹性臂1082与避空通孔1072配合。The limiting member 1074 includes an annular stopper body 1075. The center of the limiting member body 1075 is provided with a central through hole 1076. The minimum diameter of the central through hole 1076 is larger than the maximum diameter of the through hole 1071. Three grooves 1077 are uniformly distributed in the circumferential direction of the hole wall of the central through hole 1076, and the end faces of the vertical stopper body 1075 and the corresponding side of each groove 1077 are provided with the first elasticity flush with the bottom surface of each groove 1077. The arm 1078 has an arc-shaped elastic arm 1079 bent along the axial center of the central through hole 1076 along the end of the first elastic arm 1078, and a second elastic arm 1080 is formed vertically along the end of the curved elastic arm 1079. The end of the second elastic arm 1080 is horizontally bent toward the central through hole 1076 to form a limiting portion 1081. The first elastic arm 1078 and the second elastic arm 1080 are line-symmetric with respect to the axis of the curved elastic arm 1079. The first resilient arm 1078, the curved resilient arm 1079, and the second resilient arm 1080 form a U-shaped resilient arm 1082. The limiting portion 1081 is in the same plane as the stopper body 1075. The outer diameter of the stopper body 1075 is smaller than the outer diameter of the rotation preventing sleeve 1073. The U-shaped elastic arm 1082 is engaged with the escape through hole 1072.
将止转套1073的止转通孔1071轴线与限位件1074的中心通孔1076的轴线位置关系对应,限位件1074上的三个U形弹性臂1082分别安装在止转套1073上的三个避空通孔1072 内,限位件本体1075的端面与止转套1073的端面碰焊在一起。限位件1074的限位部1081径向凸出止转套1073的止转通孔1071。限位件1074的第一弹性臂1078和第二弹性臂1080之间的距离大于限位件1074的限位部1081凸出止转套1073的止转通孔1071的孔壁的长度,以提供变形空间。The axis position relationship of the rotation preventing through hole 1071 of the rotation preventing sleeve 1073 corresponds to the axial positional relationship of the center through hole 1076 of the limiting member 1074, and the three U-shaped elastic arms 1082 on the limiting member 1074 are respectively mounted on the rotation preventing sleeve 1073. Three sheltered through holes 1072 The end surface of the stopper body 1075 is welded to the end surface of the rotation preventing sleeve 1073. The limiting portion 1081 of the limiting member 1074 radially protrudes from the rotation preventing through hole 1071 of the rotation preventing sleeve 1073. The distance between the first elastic arm 1078 and the second elastic arm 1080 of the limiting member 1074 is greater than the length of the limiting wall of the limiting member 1081 of the limiting member 1074 protruding from the rotation preventing through hole 1071 of the rotation preventing sleeve 1073 to provide Deformation space.
止转套1073与限位件1074一同安装在锁紧螺母1083的止转部1084外,且止转套1073的止转凸台(未示出)插入附体1085的止转圆孔(未示出)中,限位件1074的U形弹性臂1082通过弹性变形使限位部1081插入止转部1084与抵挡部1086形成的限位部1081容置空间内、并被止转部1084朝向抵挡部1086的端面抵挡、对止转套1073背离附体1085的一侧轴向限位。The rotation preventing sleeve 1073 is mounted together with the limiting member 1074 outside the rotation preventing portion 1084 of the lock nut 1083, and the rotation preventing boss (not shown) of the rotation preventing sleeve 1073 is inserted into the rotation preventing hole of the attachment body 1085 (not shown). The U-shaped elastic arm 1082 of the limiting member 1074 is elastically deformed to insert the limiting portion 1081 into the receiving space formed by the stopping portion 1084 and the resisting portion 1086, and is blocked by the locking portion 1084. The end face of the portion 1086 resists and axially limits the side of the rotation preventing sleeve 1073 away from the attachment 1085.
实施例22Example 22
如图50至图52所示,与实施例21不同的是,限位件包括三个结构相同的弹性限位件1101。弹性限位件1101由长条状的金属片弯折而成。弹性限位件1101包括水平的限位部1102,垂直限位部1102弯折而成的第一弹性臂1103、沿第一弹性臂1103端部向限位部1102方向水平弯折、再背离限位部1102方向反向斜向上弯折、再圆弧过渡反向斜向下弯折、再朝向限位部1102方向水平弯折而成的卡扣1104,再沿卡扣1104端部垂直向下弯折而成的第二弹性臂1105,再沿第二弹性臂1105的端部背离限位部1102方向水平弯折而成的抵挡部1106,抵挡部1106和限位部1102位于同一个平面。卡扣1104的两水平部1107位于同一个平面。限位部1102与相应的卡扣1104的水平部1107之间的距离等于止转套1108的厚度。As shown in FIG. 50 to FIG. 52, unlike the embodiment 21, the limiting member includes three elastic limiting members 1101 having the same structure. The elastic limiting member 1101 is formed by bending a long strip of metal. The elastic limiting member 1101 includes a horizontal limiting portion 1102. The first elastic arm 1103 that is bent by the vertical limiting portion 1102 is horizontally bent toward the limiting portion 1102 along the end of the first elastic arm 1103. The buckle 1104 is formed by bending the buckle 1104 in the opposite direction obliquely upward, and then bending the reverse arc downward, and then horizontally bending toward the limiting portion 1102, and then vertically downward along the end of the buckle 1104. The bent second elastic arm 1105 is further disposed on the same plane along the resisting portion 1106 that is horizontally bent away from the end portion of the second elastic arm 1105. The resisting portion 1106 and the limiting portion 1102 are located on the same plane. The two horizontal portions 1107 of the buckle 1104 are located on the same plane. The distance between the limiting portion 1102 and the horizontal portion 1107 of the corresponding buckle 1104 is equal to the thickness of the cuff sleeve 1108.
将弹性限位件1101的限位部1102朝向止转套1108的轴心、并将卡扣1104穿过止转套1108上的避空通孔1109将弹性限位件1101与止转套1108安装在一起,弹性限位件1101的限位部1102径向凸出止转套1108的止转通孔1110的孔壁,弹性限位件1101的两弹性臂之间的距离大于弹性限位件1101的限位部1102凸出止转套1108的止转通孔1110的孔壁的长度,以提供变形空间。以同样的方式将另外两个弹性限位件1101与止转套1108安装在一起。The limiting portion 1102 of the elastic limiting member 1101 is oriented toward the axial center of the rotation preventing sleeve 1108, and the buckle 1104 is inserted through the hollow through hole 1109 of the rotation preventing sleeve 1108 to mount the elastic limiting member 1101 and the rotation preventing sleeve 1108. The limiting portion 1102 of the elastic limiting member 1101 radially protrudes from the hole wall of the rotation preventing through hole 1110 of the rotation preventing sleeve 1108. The distance between the two elastic arms of the elastic limiting member 1101 is greater than the elastic limiting member 1101. The limiting portion 1102 protrudes the length of the hole wall of the rotation preventing through hole 1110 of the rotation preventing sleeve 1108 to provide a deformation space. The other two elastic limiting members 1101 and the anti-rotation sleeve 1108 are mounted together in the same manner.
止转套1108与安装在一起的三个弹性限位件1101一同安装在锁紧螺母1111的止转部1112外,且止转套1108的止转凸台(未示出)插入附体1113的止转圆孔(未示出)中,弹性限位件1101的卡扣1104和第一弹性臂1103通过弹性变形使限位部1102插入锁紧螺母1111的止转部1112与抵挡部1114形成的限位部1102容置空间内、并被止转部1112朝向抵挡部1114的端面抵挡、对止转套1108背离附体1113的一侧轴向限位。The rotation preventing sleeve 1108 is mounted together with the three elastic limiting members 1101 mounted together outside the rotation preventing portion 1112 of the lock nut 1111, and the rotation preventing boss (not shown) of the rotation preventing sleeve 1108 is inserted into the attachment body 1113. In the rotation preventing hole (not shown), the buckle 1104 of the elastic limiting member 1101 and the first elastic arm 1103 are elastically deformed to insert the limiting portion 1102 into the rotation preventing portion 1112 of the lock nut 1111 and the resisting portion 1114. The limiting portion 1102 is accommodated in the space, and is blocked by the rotation preventing portion 1112 toward the end surface of the blocking portion 1114, and is axially restricted to the side of the rotation preventing sleeve 1108 away from the attached body 1113.
实施例23Example 23
如图53所示,与实施例22不同的是,在每个弹性限位件1241的抵挡部1242背离卡扣1243的一侧设有三个以上的垫高凸起1244,限位部1245和抵挡部1242在同一个平面上。垫高凸起1244使限位部1245与附体(未示出)和止转套(未示出)间隙配合,在将止转限位组件安装在螺杆(未示出)的止转抵挡部1242上的过程中,第一弹性臂1246和卡扣1243弹性变形时,便于限位部1245在止转套与附体间运动。As shown in FIG. 53 , different from the embodiment 22, three or more pad protrusions 1244 are provided on the side of the resisting portion 1242 of each elastic limiting member 1241 facing away from the buckle 1243 , and the limiting portion 1245 and the resisting portion The sections 1242 are on the same plane. The padding protrusion 1244 allows the stopper portion 1245 to be clearance-fitted with the attachment body (not shown) and the rotation preventing sleeve (not shown), and the rotation stop stopper assembly is attached to the rotation preventing abutment portion of the screw (not shown). During the process of 1242, when the first elastic arm 1246 and the buckle 1243 are elastically deformed, the limiting portion 1245 is facilitated to move between the rotation preventing sleeve and the attachment body.
卡扣1243与抵挡部1242之间的距离等于止转套的厚度,从卡扣1243的最顶端向限位件的方向两侧逐步缩小,这种结构的弹性限位件1241,第二弹性臂1247与止转套的避空通孔紧配合,在卡扣1243和第一弹性臂1246没有弹性变形时,弹性限位件1241不会相对止转套发生位移,在紧固连接结构处于剧烈震动的环境下,可大大降低噪音,且便于止转限位组件安装在螺杆的止转抵挡部1242外;第一弹性臂1246与避空通孔间隙配合,在将止转限位组件安装在螺杆上过程中,第一弹性臂1246和卡扣1243弹性变形时,第一弹性臂1246可在避空通孔内自由运动,使限位部1245更易伸入限位部容置空间内。The distance between the buckle 1243 and the resisting portion 1242 is equal to the thickness of the rotation preventing sleeve, and is gradually reduced from the top end of the buckle 1243 toward the direction of the limiting member. The elastic limiting member 1241 of the structure, the second elastic arm The 1247 is tightly engaged with the through hole of the anti-rotation sleeve. When the buckle 1243 and the first elastic arm 1246 are not elastically deformed, the elastic limiting member 1241 does not displace relative to the rotation preventing sleeve, and the fastening structure is in a severe vibration. In the environment, the noise can be greatly reduced, and the rotation stop limit component is installed outside the rotation stop resisting portion 1242 of the screw; the first elastic arm 1246 is matched with the air escape through hole, and the rotation stop limit component is mounted on the screw During the upper process, when the first elastic arm 1246 and the buckle 1243 are elastically deformed, the first elastic arm 1246 can move freely in the through hole, so that the limiting portion 1245 can easily protrude into the limiting portion receiving space.
实施例24Example 24
如图54所示,与实施例21不同的是,从弧形弹性臂1261的最顶端向限位件的方向两侧逐步缩小,这种结构的限位件,第一弹性臂1262、与第一弹性臂1262相接的半个弧形弹性臂1261与止转套(未示出)的避空通孔(未示出)紧配合,与第二弹性臂1263相接的半个弧形弹性臂1261、第二弹性臂1263与避空通孔间隙配合,这样在弧形弹性臂1261和第二弹性臂1263没有弹性变形时,限位件不会相对止转套发生位移,在紧固连接结构处于剧烈震动的环境下,可大大降低噪音,且便于止转限位组件安装在螺杆(未示出)的止转抵挡部(未示出)外;在将止转限位组件安装在螺杆上过程中,弧形弹性臂1261和第二弹性臂1263弹性变形时,半个弧形弹性臂1261和第二弹性臂1263弹性可在避空通孔内自由运动,使限位部更易伸入限位部容置空间内。As shown in FIG. 54, different from the embodiment 21, the two ends of the curved elastic arm 1261 are gradually reduced toward the both sides of the limiting member. The limiting member of the structure, the first elastic arm 1262, and the first A half-arc elastic arm 1261 that is in contact with a resilient arm 1262 is tightly fitted with a hollow through hole (not shown) of the anti-rotation sleeve (not shown), and a half-elastic elasticity that is in contact with the second elastic arm 1263 The arm 1261 and the second elastic arm 1263 are gap-fitted with the air-proof through hole, so that when the curved elastic arm 1261 and the second elastic arm 1263 are not elastically deformed, the limiting member does not displace relative to the rotation preventing sleeve, and the fastening connection is fastened. The structure is in a severely vibrating environment, the noise can be greatly reduced, and the rotation stop limit assembly is mounted outside the anti-rotation abutment portion (not shown) of the screw (not shown); the rotation stop limit assembly is mounted on the screw During the upper process, when the curved elastic arm 1261 and the second elastic arm 1263 are elastically deformed, the half curved elastic arm 1261 and the second elastic arm 1263 are elastically movable in the hollow through hole, so that the limiting portion is more easily inserted. The limit portion is accommodated in the space.
实施例25Example 25
如图54、图56所示,曲轴连杆机构包括紧固连接组件、曲轴1281、连杆组。As shown in FIGS. 54 and 56, the crankshaft link mechanism includes a fastening connection assembly, a crankshaft 1281, and a link set.
紧固连接组件与实施例1不同的是,螺杆1288的头部1297外周包括一个圆心角大于 180°的圆弧面和一个连接圆弧面两端的止转平面1282。The fastening connection assembly differs from the embodiment 1 in that the outer circumference of the head 1297 of the screw 1288 includes a central angle greater than An arc surface of 180° and a rotation stop plane 1282 connecting the ends of the arc surface.
连杆组包括连杆体1283、连杆大头盖1284、连杆大头轴瓦1285。连杆体1283包括连杆大头1286和连杆小头1287。连杆大头1286上设有与螺杆1288的外螺纹部1289配合的通孔1290,连杆大头盖1284上设有与螺杆1288的外螺纹部1289配合的通孔1291。在连杆大头盖1284背离连杆大头1286的一侧设有与止转套1292的止转凸台1293配合的圆形的大头止转孔1294。The link set includes a link body 1283, a link head cover 1284, and a link big head bush 1285. The link body 1283 includes a link head 1286 and a link head 1287. The connecting rod head 1286 is provided with a through hole 1290 that cooperates with the external thread portion 1289 of the screw 1288. The connecting rod head cover 1284 is provided with a through hole 1291 that cooperates with the external thread portion 1289 of the screw 1288. A circular large head stop hole 1294 that engages with the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is provided on a side of the connecting rod head cover 1284 facing away from the connecting rod head 1286.
连杆大头轴瓦1285合抱在曲轴1281外,连杆大头1286和连杆大头盖1284合抱在连杆大头轴瓦1285外;螺杆1288的外螺纹部1289穿过连杆大头1286上的通孔1290、连杆大头盖1284上的通孔1291与锁紧螺母1295的螺纹通孔1296螺纹连接且螺杆1288的止转平面1282被连杆大头1286的侧壁抵挡约束螺杆1288相对连杆大头1286旋转,螺杆1288与连杆大头1286不可旋转地安装在一起,螺杆1288的头部1297轴向抵挡连杆大头1286,锁紧螺母1295轴向抵挡连杆大头盖1284,螺杆1288和锁紧螺母1295将连杆大头1286和连杆大头盖1284紧固连接在一起。The connecting rod big head bushing 1285 is hug outside the crankshaft 1281, and the connecting rod big head 1286 and the connecting rod big head cover 1284 are hugged outside the connecting rod big head bushing 1285; the external threaded portion 1289 of the screw 1288 passes through the through hole 1290 of the connecting rod big head 1286, and the connecting The through hole 1291 of the rod head cover 1284 is screwed with the threaded through hole 1296 of the lock nut 1295 and the rotation preventing plane 1282 of the screw 1288 is resisted by the side wall of the connecting rod head 1286 to rotate the restraining screw 1288 relative to the connecting rod head 1286, the screw 1288 Non-rotatably mounted with the connecting rod head 1286, the head 1297 of the screw 1288 axially resists the connecting rod head 1286, the locking nut 1295 axially resists the connecting rod head cover 1284, and the screw 1288 and the lock nut 1295 connect the connecting rod head The 1286 and the connecting rod head cover 1284 are fastened together.
止转套1292安装在锁紧螺母1295的止转部1298外且止转套1292的止转凸台1293的抵挡位置靠近或与大头止转孔1294接触,抵挡螺母1299安装在螺杆1288的外螺纹部1289上,抵挡螺母1299对止转套1292背离连杆大头盖1284的一侧轴向限位。止转套1292的止转凸台1293在锁紧螺母1295旋松方向的一侧被大头止转孔1294抵挡约束止转套1292相对连杆大头盖1284旋转,螺母止转部1300与止转套内止转部1301配合约束止转套1292相对锁紧螺母1295旋转,螺杆1288与锁紧螺母1295、连杆大头1286和连杆大头盖1284不可旋转地安装在一起。The rotation preventing sleeve 1292 is mounted outside the rotation preventing portion 1298 of the lock nut 1295 and the abutting position of the rotation preventing boss 1293 of the rotation preventing sleeve 1292 is close to or in contact with the large head rotation hole 1294, and the resisting nut 1299 is mounted on the external thread of the screw 1288. In the portion 1289, the resisting nut 1299 axially limits the side of the anti-rotation sleeve 1292 away from the connecting rod head cover 1284. The rotation preventing boss 1293 of the rotation preventing sleeve 1292 is rotated by the large head rotation hole 1294 against the restriction rotation sleeve 1292 on the side of the lock nut 1295 in the unscrewing direction, and the nut rotation preventing portion 1300 and the rotation preventing sleeve are rotated. The inner rotation stop portion 1301 cooperates with the restraining rotation sleeve 1292 to rotate relative to the lock nut 1295. The screw 1288 is non-rotatably mounted with the lock nut 1295, the link head 1286 and the link head cover 1284.
对于本发明,止转套上的止转套止转凸台可为两个或两个以上,在附体上设有与止转套止转凸台一一配合的附体止转孔;附体止转孔也可是止转套止转凸台的整数倍;根据本发明的实施例,本领域的技术人员不需任何创造性劳动就可实现,故不再用具体的实施方式说明。 In the present invention, the rotation preventing sleeve of the rotation preventing sleeve can be two or more, and the attachment body is provided with an auxiliary rotation preventing hole which is matched with the rotation preventing projection boss of the rotation preventing sleeve; The body stop hole can also be an integral multiple of the rotation sleeve of the rotation preventing sleeve; according to an embodiment of the present invention, those skilled in the art can realize the invention without any creative labor, and therefore will not be described in the specific embodiment.

Claims (21)

  1. 一种紧固连接结构,包括紧固连接组件、母体、附体;紧固连接组件包括螺杆、锁紧螺母;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;母体、附体上均设有与螺杆的外螺纹部配合的通孔;螺杆穿过母体上的通孔、附体的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与母体安装在一起;A fastening connection structure includes a fastening connection assembly, a mother body and an attachment body; the fastening connection assembly includes a screw and a lock nut; the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion The mother body and the attached body are respectively provided with through holes that cooperate with the external thread portion of the screw; the screw passes through the through hole of the female body, and the through hole of the attached body is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body. ;
    其特征在于:紧固连接组件还包括止转套;The utility model is characterized in that the fastening connection assembly further comprises a rotation preventing sleeve;
    锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;The outer circumference of the lock nut is provided with a circumferentially evenly arranged, axial nut rotation stop portion;
    在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;There is only one axial anti-rotation through hole on the anti-rotation sleeve, and the anti-rotation sleeve inner rotation preventing portion is matched with the nut rotation preventing portion on the hole wall of the rotation preventing through hole; on one end surface of the rotation preventing sleeve a rotation preventing sleeve of the rotation preventing sleeve is rotated toward the unscrewing direction of the lock nut, and the resisting position of the rotation preventing protrusion of the rotation sleeve is in a circumferential direction and a direction in which the lock nut is loosened;
    附体上背离母体的一侧设有与止转套止转凸台间隙配合的附体止转孔;The side of the attached body facing away from the mother body is provided with an auxiliary rotation preventing hole which is matched with the rotation preventing protrusion of the rotation preventing sleeve;
    止转套安装在锁紧螺母外,止转套止转凸台插入附体止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被附体止转孔抵挡约束止转套相对附体旋转;The rotation sleeve is installed outside the lock nut, the rotation sleeve of the rotation sleeve is inserted into the rotation stop hole of the attachment body, and the rotation sleeve is axially restrained outside the lock nut; the rotation stop portion of the nut and the rotation stop sleeve stop The rotating portion cooperates with the restraining lock nut to rotate relative to the rotation preventing sleeve, and the rotation preventing projection boss is rotated by the auxiliary rotation preventing hole on the side facing the loosening direction of the locking nut to resist the rotation of the restraining rotation sleeve relative to the attached body;
    螺杆、锁紧螺母不可旋转地与母体、附体安装在一起。The screw and the lock nut are non-rotatably mounted together with the base body and the attachment body.
  2. 一种紧固连接结构,包括紧固连接组件、母体、附体;紧固连接组件包括螺杆、锁紧螺母;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;母体、附体上均设有与螺杆的外螺纹部配合的通孔;A fastening connection structure includes a fastening connection assembly, a mother body and an attachment body; the fastening connection assembly includes a screw and a lock nut; the screw includes an external thread portion and a rotation stop abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion a through hole for matching the external thread portion of the screw is provided on the mother body and the attached body;
    其特征在于:紧固连接组件还包括止转套、止转垫;The utility model is characterized in that: the fastening connection assembly further comprises a rotation preventing sleeve and a rotation preventing pad;
    锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;The outer circumference of the lock nut is provided with a circumferentially evenly arranged, axial nut rotation stop portion;
    在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;There is only one axial anti-rotation through hole on the anti-rotation sleeve, and the anti-rotation sleeve inner rotation preventing portion is matched with the nut rotation preventing portion on the hole wall of the rotation preventing through hole; on one end surface of the rotation preventing sleeve a rotation preventing sleeve of the rotation preventing sleeve is rotated toward the unscrewing direction of the lock nut, and the resisting position of the rotation preventing protrusion of the rotation sleeve is in a circumferential direction and a direction in which the lock nut is loosened;
    在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;在止转垫朝向附体的端面上凸设有止转垫止转凸台;The through hole is provided with a through hole that cooperates with the external thread portion of the screw, and a rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the rotation preventing surface of the rotation preventing pad is convexly disposed on the end surface of the rotation preventing pad Pad the turntable;
    止转套止转凸台的高度小于或等于止转垫的厚度,在附体上设有与止转垫止转凸台配合的附体止转孔;The height of the rotation preventing boss of the rotation sleeve is less than or equal to the thickness of the rotation preventing pad, and the attachment body is provided with an auxiliary rotation preventing hole that cooperates with the rotation preventing pad of the rotation preventing pad;
    螺杆穿过母体上的通孔、附体上的通孔、止转垫的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与母体安装在一起;The screw passes through the through hole on the mother body, the through hole on the attached body, and the through hole of the rotation preventing pad is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body;
    止转垫止转凸台插入附体止转孔内约束止转垫相对附体旋转;The rotation preventing pad of the rotation preventing pad is inserted into the auxiliary body rotation hole to restrain the rotation of the rotation preventing pad relative to the attached body;
    止转套安装在锁紧螺母外,止转套止转凸台插入止转垫止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被止转垫止转孔抵挡约束止转套相对止转垫旋转;The rotation sleeve is installed outside the lock nut, the rotation sleeve of the rotation sleeve is inserted into the rotation preventing hole of the rotation preventing pad, and the rotation preventing sleeve is axially restrained outside the lock nut; the nut rotation preventing portion and the rotation preventing sleeve are inside The rotation stop portion cooperates with the constraint lock nut to rotate relative to the rotation stop sleeve, and the rotation sleeve of the rotation stop sleeve is rotated by the rotation preventing hole of the rotation preventing pad on the side facing the loosening direction of the locking nut, and the rotation of the rotation preventing sleeve relative to the rotation preventing pad;
    螺杆、锁紧螺母不可旋转地与母体、附体、止转垫安装在一起。The screw and the lock nut are non-rotatably mounted together with the base body, the attachment body, and the rotation preventing pad.
  3. 一种紧固连接组件,还包括螺杆、锁紧螺母、;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;其特征在于:还包括止转套;锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;A fastening connection assembly further includes a screw and a lock nut; the screw includes an external thread portion and a rotation preventing abutting portion, and the rotation preventing abutting portion radially protrudes the external thread portion; and the utility model further comprises: a rotation preventing sleeve; locking The outer circumference of the nut is provided with a circumferentially evenly arranged, axial nut rotation preventing portion;
    止转套为环状,在止转套上仅设有一个轴向的止转通孔,在止转通孔的孔壁上设有周向均匀排列、轴向的止转套内止转部;在止转套的一个端面上轴向凸设有与附体止转孔和/或止转垫止转孔配合、约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;The anti-rotation sleeve is annular, and only one axial anti-rotation through hole is arranged on the anti-rotation sleeve, and a circumferentially evenly arranged axial abutment rotation stop portion is arranged on the hole wall of the anti-rotation through hole. a non-rotating sleeve rotation preventing convex body that is axially convexly engaged with the auxiliary body rotation preventing hole and/or the rotation preventing pad rotation preventing hole on one end surface of the rotation preventing sleeve, and restraining the rotation preventing sleeve to rotate in the unscrewing direction of the locking nut The abutment position of the rotation preventing boss of the rotation preventing sleeve is in the circumferential direction and toward the loosening direction of the lock nut;
    螺杆和锁紧螺母螺纹连接,止转套安装在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转。The screw and the lock nut are screwed, and the rotation sleeve is installed outside the lock nut; the nut rotation stop portion and the rotation stop portion of the rotation stop sleeve cooperate with the constraint lock nut to rotate relative to the rotation sleeve.
  4. 如权利要求3所述的一种紧固连接组件,其特征在于:止转套止转凸台的高度大于止转套内止转部的轴线长度。 A fastening connection assembly according to claim 3, wherein the height of the rotation preventing sleeve of the rotation preventing sleeve is larger than the axial length of the rotation preventing portion of the rotation preventing sleeve.
  5. 如权利要求3所述的一种紧固连接组件,其特征在于:还包括止转垫;在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;在止转垫朝向附体的端面上、轴向凸设有与附体止转孔配合的止转垫止转凸台;止转套止转凸台的高度小于或等于止转垫的厚度。A fastening connection assembly according to claim 3, further comprising: a rotation preventing pad; wherein the rotation preventing pad is provided with a through hole which cooperates with the external thread portion of the screw, and the rotation preventing pin gap of the rotation preventing sleeve a rotation stop hole of the rotation preventing pad; a rotation preventing pad rotation protrusion that cooperates with the body rotation preventing hole on the end surface of the rotation preventing pad facing the attachment body; the height of the rotation preventing rotation protrusion of the rotation preventing sleeve Less than or equal to the thickness of the rotation pad.
  6. 如权利要求3所述的一种紧固连接组件,其特征在于:还包括止转垫;在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;在止转垫背离止转套的一侧设有嵌入部或喷涂有摩擦颗粒;所述的嵌入部为设置在止转垫的端面上的嵌入凸起、或为设置在止转垫外侧的嵌入边;止转套止转凸台的高度小于或等于止转垫的厚度。A fastening connection assembly according to claim 3, further comprising: a rotation preventing pad; wherein the rotation preventing pad is provided with a through hole which cooperates with the external thread portion of the screw, and the rotation preventing pin gap of the rotation preventing sleeve a matching rotation preventing pad rotation hole; an embedding portion or a friction particle is disposed on a side of the rotation preventing pad facing away from the rotation preventing sleeve; the embedding portion is an insertion protrusion provided on an end surface of the rotation preventing pad, or The embedding edge is disposed on the outer side of the anti-rotation pad; the height of the anti-rotation sleeve anti-rotation boss is less than or equal to the thickness of the anti-rotation pad.
  7. 如权利要求3所述的一种紧固连接组件,其特征在于:所述的止转套包括环状的止转套本体,在止转套本体的轴心位置设有中心通孔,从止转套本体同侧轴向凸设有两个以上的弹性臂、弹性臂的端部径向向内形成限位部,在限位部的内侧面上设有所述的止转套内止转部,限位部设有止转套内止转部的内侧面形成非闭合的止转通孔;止转套止转凸台与限位部同侧。A fastening joint assembly according to claim 3, wherein said rotation preventing sleeve comprises an annular rotation preventing sleeve body, and a central through hole is provided at an axial center of the rotation preventing sleeve body. The sleeve body is axially convexly provided with two or more elastic arms on the same side, and the end portion of the elastic arm forms a limiting portion radially inwardly, and the inner side of the limiting portion is provided with the rotation preventing sleeve in the inner side The limiting portion is provided with an inner side surface of the inner rotation preventing portion of the rotation preventing sleeve to form a non-closed rotation preventing through hole; the rotation preventing sleeve of the rotation preventing sleeve is on the same side as the limiting portion.
  8. 如权利要求3所述的一种紧固连接组件,其特征在于:所述的止转套还包括弹性臂;在止转套上设有与止转通孔连通、与弹性臂配合、用来容置弹性臂且为弹性臂变形提供变形空间的避空槽,所述的止转通孔为非闭合的孔;弹性臂的一端与止转套背离止转套止转凸台的一侧相连,另一端朝向止转套设有止转套止转凸台的一侧、并在该端的端部径向向止转通孔的轴心设有限位部,限位部与止转通孔的轴线垂直,限位部径向凸出止转通孔;所述的弹性臂与所述的避空槽正对。A fastening joint assembly according to claim 3, wherein said rotation sleeve further comprises a resilient arm; and the rotation sleeve is provided with a rotation preventing through hole and a resilient arm for a escaping groove for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm, wherein the rotation preventing through hole is a non-closed hole; one end of the elastic arm is connected to a side of the rotation preventing sleeve facing away from the rotation preventing boss of the rotation preventing sleeve The other end is provided with a side of the rotation preventing sleeve of the rotation preventing sleeve, and a limiting portion is provided at an end of the end portion of the end portion of the rotation preventing through hole, and the limiting portion and the stopping through hole are The axis is perpendicular, and the limiting portion radially protrudes from the rotation preventing through hole; the elastic arm is opposite to the cutout.
  9. 如权利要求3所述的一种紧固连接组件,其特征在于:还包括限位件,一个止转套对应一个限位件;A fastening connection assembly according to claim 3, further comprising a limiting member, wherein the rotation preventing sleeve corresponds to a limiting member;
    限位件包括环状的限位件本体,在限位件本体的中心位置仅设有一个中心通孔,中心通孔的最小孔径大于止转通孔的最大孔径;还包括与限位件本体相连的两个以上的弹性臂,在弹性臂端部向中心通孔轴心方向设有与限位件本体平行的限位部,限位部径向凸出中心通孔;两个以上的限位部的最小内径小于止转通孔的最小内径;The limiting member comprises an annular limiting member body, and only one central through hole is arranged at a central position of the limiting member body, the minimum aperture of the central through hole is larger than the maximum aperture of the stopping through hole; and the limiting member body is further included Two or more elastic arms are connected, and a limiting portion parallel to the limiting member body is arranged at an axial end of the elastic arm toward the central through hole axial direction, and the limiting portion radially protrudes the central through hole; two or more limits The minimum inner diameter of the bit portion is smaller than the minimum inner diameter of the stop through hole;
    在止转套上设有与弹性臂配合、用来容置弹性臂且为弹性臂变形提供变形空间的避空空间;将限位件与止转套安装在一起,弹性臂与止转套的避空空间配合;限位件的限位部径向凸出止转套的止转通孔;在与限位件本体平行的方向、弹性臂最大的变形量大于限位件的限位部凸出止转套的止转通孔的孔壁的长度。The anti-rotation sleeve is provided with a hollow space for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm; the limiting member and the rotation preventing sleeve are mounted together, and the elastic arm and the rotation preventing sleeve are arranged The space of the avoidance space cooperates; the limiting portion of the limiting member radially protrudes from the stopping through hole of the rotation preventing sleeve; in the direction parallel to the body of the limiting member, the maximum deformation amount of the elastic arm is larger than the limiting portion of the limiting member The length of the wall of the hole that stops the through hole of the sleeve.
  10. 如权利要求9所述的一种紧固连接组件,其特征在于:限位件的限位部均凸出限位件本体,限位件本体安装在止转套的一个端面上,弹性臂轴向伸入避空空间中,限位部径向伸入止转通孔中。A fastening connection assembly according to claim 9, wherein the limiting portion of the limiting member protrudes from the limiting member body, and the limiting member body is mounted on one end surface of the rotation preventing sleeve, and the elastic arm shaft The protruding portion protrudes into the through hole in a radial direction.
  11. 如权利要求9所述的一种紧固连接组件,其特征在于:在所述的限位件的中心通孔的孔壁上设有两个以上的凹槽;所述的弹性臂包括与限位件本体相连的第一弹性臂,沿第一弹性臂端部向中心通孔的轴心弯曲的曲面弹性臂,沿曲面弹性臂的端部再垂直向下形成的第二弹性臂,所述的限位部设置在第二弹性臂的端部;第一弹性臂、曲面弹性臂、第二弹性臂形成U形弹性臂,U形弹性臂正对凹槽。A fastening connection assembly according to claim 9, wherein two or more grooves are provided in the wall of the central through hole of said limiting member; said elastic arm includes a limit a first elastic arm connected to the body of the member, a curved elastic arm bent along the axis of the first elastic arm toward the axis of the central through hole, and a second elastic arm formed vertically downward along the end of the curved elastic arm, The limiting portion is disposed at an end of the second elastic arm; the first elastic arm, the curved elastic arm, and the second elastic arm form a U-shaped elastic arm, and the U-shaped elastic arm faces the groove.
  12. 如权利要求3所述的一种紧固连接组件,其特征在于:还包括限位件;所述的限位件包括两个以上的弹性限位件;所述的弹性限位件包括水平的限位部,垂直限位部弯折而成的第一弹性臂、沿第一弹性臂端部向限位部方向且平行限位部弯折、再背离限位部方向反向斜向上弯折、再反向斜向下弯折、再朝向限位部方向且平行限位部弯折而成的卡扣,再沿卡扣端部向下弯折而成的第二弹性臂,再沿第二弹性臂的端部背离限位部方向平行限位部弯折而成的抵挡部;A fastening assembly according to claim 3, further comprising a limiting member; said limiting member comprising two or more elastic limiting members; said elastic limiting member comprising a horizontal The first elastic arm bent by the vertical limiting portion is bent along the end of the first elastic arm toward the limiting portion and parallel to the limiting portion, and then bent obliquely upwards away from the limiting portion. Then, the buckle is bent obliquely downward, and then the buckle is bent toward the position of the limiting portion and the parallel limiting portion is bent, and then the second elastic arm is bent downward along the end of the buckle, and then Abutting portion of the end portion of the second elastic arm that is bent away from the limiting portion in the direction of the limiting portion;
    在止转套上设有与弹性臂配合、用来容置弹性臂且为弹性臂变形提供变形空间的避空孔;The anti-rotation sleeve is provided with a hollow hole for engaging with the elastic arm for accommodating the elastic arm and providing a deformation space for the deformation of the elastic arm;
    将弹性限位件的限位部朝向止转套的轴心、并将弹性卡扣穿过止转套上的避空通孔,通过弹 性限位件一侧被卡扣抵挡、一侧被抵挡部抵挡将弹性限位件与限位件安装在一起,弹性限位件的限位部径向凸出止转套的止转通孔的孔壁,弹性限位件的两弹性臂之间的距离大于弹性限位件的限位部凸出止转套的止转通孔的孔壁的长度。Positioning the limiting portion of the elastic limiting member toward the axis of the rotation preventing sleeve, and snapping the elastic buckle through the hollow through hole on the rotation preventing sleeve, and passing the elastic One side of the limiting member is buckled and one side is resisted by the resisting portion, and the elastic limiting member and the limiting member are mounted together, and the limiting portion of the elastic limiting member radially protrudes from the stopping through hole of the rotation preventing sleeve The wall of the hole, the distance between the two elastic arms of the elastic limiting member is greater than the length of the wall of the hole of the rotation preventing through hole of the limiting portion of the elastic limiting member.
  13. 如权利要求3至6任意一项权利要求所述的一种紧固连接组件,其特征在于:所述的紧固连接组件还包括限位件;在锁紧螺母上设有卡槽;所述的限位件为卡环,所述的卡环包括非闭合的环状的卡环本体,在卡环本体的外周设有三条以上径向凸出卡环本体的限位凸条;卡环本体的内周与锁紧螺母的卡槽底部的外周配合;限位凸条的外径大于止转套的止转通孔的最大孔径;卡环安装在卡槽内对止转套背离螺母止转凸部的一侧轴向限位。A fastening connection assembly according to any one of claims 3 to 6, wherein the fastening connection assembly further comprises a limiting member; the locking nut is provided with a card slot; The limiting member is a snap ring, the snap ring includes a non-closed annular snap ring body, and three or more limiting ribs of the radially protruding snap ring body are disposed on an outer circumference of the snap ring body; the snap ring body The inner circumference is matched with the outer circumference of the bottom of the locking nut; the outer diameter of the limiting rib is larger than the maximum diameter of the rotation preventing through hole of the rotation preventing sleeve; the snap ring is installed in the clamping groove to stop the rotation of the rotation preventing sleeve away from the nut One side of the protrusion is axially constrained.
  14. 如权利要求7至12任意一项权利要求所述的紧固连接组件;其特征在于:锁紧螺母的外周设与限位部配合的限位部容置空间,在限位部容置空间朝向螺杆的止转抵挡部的面为用来抵挡限位部的抵挡面;The fastening connection assembly according to any one of claims 7 to 12, wherein the outer circumference of the lock nut is provided with a limiting portion accommodating space that cooperates with the limiting portion, and the accommodating space is oriented in the limiting portion. The surface of the anti-rotation abutting portion of the screw is an abutting surface for resisting the limiting portion;
    止转套安装在锁紧螺母外,弹性臂通过弹性变形使限位部插入限位部容置空间内、并被限位部容置空间的抵挡面抵挡、对止转套背离外螺纹部的一侧轴向限位。The rotation sleeve is installed outside the lock nut, and the elastic arm is elastically deformed to insert the limit portion into the accommodating space of the limiting portion, and is resisted by the abutting surface of the accommodating space of the limiting portion, and the anti-rotation sleeve is away from the external thread portion. One side axial limit.
  15. 如权利要求3至6任意一项权利要求所述的一种紧固连接组件,其特征在于:在螺杆的止转抵挡部朝向外螺纹部的端面上轴向凸设有与用来约束锁紧螺母螺杆相对母体旋转的止转凸台。A fastening connection assembly according to any one of claims 3 to 6, wherein the anti-rotation abutting portion of the screw is axially convexly disposed toward the end surface of the externally threaded portion for restraining the locking The anti-rotation boss of the nut screw rotating relative to the parent body.
  16. 一种包括如权利要求3、4、7至12任意一项权利要求所述的紧固连接组件的紧固连接结构,其特征在于:还包括母体、附体;母体、附体上均设有与螺杆的外螺纹部配合的通孔;A fastening structure for a fastening joint assembly according to any one of claims 3, 4, 7 to 12, characterized in that it further comprises a base body and an attachment body; a through hole that cooperates with the external thread portion of the screw;
    紧固连接组件还包括止转垫;在止转垫上设有与螺杆的外螺纹部配合的通孔、与止转套止转凸台间隙配合的止转垫止转孔;止转套止转凸台的高度小于或等于止转垫的厚度;The fastening connection assembly further includes a rotation preventing pad; the through hole is provided with a through hole that cooperates with the external thread portion of the screw, and the rotation preventing pad rotation hole that is matched with the rotation preventing protrusion of the rotation preventing sleeve; the rotation preventing sleeve is stopped The height of the boss is less than or equal to the thickness of the rotation pad;
    螺杆穿过母体上的通孔、附体上的通孔、止转垫的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与母体安装在一起;The screw passes through the through hole on the mother body, the through hole on the attached body, and the through hole of the rotation preventing pad is screwed with the lock nut, and the screw is non-rotatably mounted with the mother body;
    在止转垫背离止转套的一侧设有嵌入部,附体的硬度小于止转垫的嵌入部的硬度,止转垫的嵌入部嵌入附体内约束止转垫相对附体旋转;或在止转垫背离止转套的一侧喷涂有摩擦颗粒,止转垫的摩擦颗粒与附体间产生足够大的摩擦力约束止转垫相对附体旋转;或止转垫通过固定胶固定在附体上约束止转垫相对附体旋转;An inserting portion is disposed on a side of the rotation preventing pad facing away from the rotation preventing sleeve, the hardness of the attachment body being smaller than the hardness of the insertion portion of the rotation preventing pad, and the insertion portion of the rotation preventing pad is embedded in the attachment body to restrain the rotation of the rotation preventing pad relative to the attached body; or The side of the rotation preventing pad facing away from the rotation preventing sleeve is sprayed with friction particles, and the friction particles between the rotation preventing pad and the attached body generate a sufficient frictional force to restrain the rotation of the rotation preventing pad relative to the attached body; or the rotation preventing pad is fixed by the fixing glue The body restrains the rotation of the rotation pad relative to the body;
    止转套安装在锁紧螺母外,止转套止转凸台插入止转垫止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被止转垫止转孔抵挡约束止转套相对止转垫旋转;The rotation sleeve is installed outside the lock nut, the rotation sleeve of the rotation sleeve is inserted into the rotation preventing hole of the rotation preventing pad, and the rotation preventing sleeve is axially restrained outside the lock nut; the nut rotation preventing portion and the rotation preventing sleeve are inside The rotation stop portion cooperates with the constraint lock nut to rotate relative to the rotation stop sleeve, and the rotation sleeve of the rotation stop sleeve is rotated by the rotation preventing hole of the rotation preventing pad on the side facing the loosening direction of the locking nut, and the rotation of the rotation preventing sleeve relative to the rotation preventing pad;
    螺杆、锁紧螺母不可旋转地与母体、附体、止转垫安装在一起。The screw and the lock nut are non-rotatably mounted together with the base body, the attachment body, and the rotation preventing pad.
  17. 如权利要求16所述的一种紧固连接结构,其特征在于:在螺杆的止转抵挡部朝向外螺纹部的端面上轴向凸设有与用来约束锁紧螺母螺杆相对母体旋转的止转凸台;所述的止转垫还包括螺杆止转垫,所述的螺杆止转垫上的止转垫止转孔与螺杆的止转凸台配合;A fastening structure according to claim 16, wherein an axial projection of the rotation preventing abutting portion of the screw toward the end portion of the external thread portion is provided to restrain the rotation of the nut of the lock nut relative to the base body. The rotation preventing pad further comprises a screw rotation preventing pad, and the rotation preventing hole of the rotation preventing pad on the screw rotation preventing pad cooperates with the rotation preventing boss of the screw;
    在螺杆止转垫朝向母体的一侧设有嵌入部,母体的硬度小于螺杆止转垫的嵌入部的硬度,螺杆止转垫的嵌入部嵌入母体内约束螺杆止转垫相对母体旋转;或在螺杆止转垫朝向母体的一侧喷涂有摩擦颗粒,螺杆止转垫的摩擦颗粒与母体间产生足够大的摩擦力约束螺杆止转垫相对母体旋转;或螺杆止转垫通过固定胶固定在母体上约束螺杆止转垫相对母体旋转;An inserting portion is disposed on a side of the screw rotation preventing pad facing the female body, the hardness of the female body is smaller than the hardness of the embedded portion of the screw rotation preventing pad, and the embedded portion of the screw rotation preventing pad is embedded in the female body to restrain the rotation of the screw rotation preventing pad relative to the mother body; The screw rotation preventing pad is sprayed with friction particles on one side of the mother body, and the friction particles between the screw rotation preventing pad and the mother body generate sufficient friction to restrain the rotation of the screw rotation preventing pad relative to the mother body; or the screw rotation preventing pad is fixed to the mother body by the fixing glue The upper threaded screw rotation preventing pad rotates relative to the mother body;
    螺杆的止转凸台插入螺杆止转垫的止转垫止转孔内约束螺杆相对螺杆止转垫旋转;螺杆不可旋转地与母体安装在一起。The rotation preventing boss of the screw is inserted into the rotation preventing hole of the screw rotation preventing pad, and the binding screw rotates relative to the screw rotation preventing pad; the screw is non-rotatably mounted with the mother body.
  18. 一种包括如权利要求3、4、7至12任意一项权利要求所述的紧固连接组件的紧固连接结构,其特征在于:还包括母体、附体;A fastening structure for a fastening joint assembly according to any one of claims 3, 4, 7 to 12, characterized in that it further comprises a base body and an attachment body;
    所述的母体与附体为一体式结构,形成带断口的环形体;在所述的环形体的断口的两端分别同向设有相对的第一安装部与第二安装部;The parent body and the attached body are a unitary structure, forming a ring-shaped annular body; at the two ends of the fracture of the ring body, opposite first mounting portions and second mounting portions are respectively provided in the same direction;
    在第一安装部、第二安装部上均设有与所述的螺杆的外螺纹部配合的通孔;螺杆的外螺纹部 穿过第一安装部上的通孔、第二安装部上的通孔与锁紧螺母螺纹连接,螺杆、锁紧螺母将第一安装部和第二安装部安装在一起,螺杆不可旋转地与第一安装部安装在一起;a through hole that cooperates with the external thread portion of the screw is provided on the first mounting portion and the second mounting portion; the external thread portion of the screw Passing through the through hole in the first mounting portion and the through hole in the second mounting portion to be screwed with the lock nut, the screw and the lock nut are mounted together with the first mounting portion and the second mounting portion, and the screw is non-rotatably coupled The first mounting portion is mounted together;
    第一安装部上背离第二安装部的一侧设有与止转套止转凸台间隙配合的第一安装部止转孔;止转套安装在锁紧螺母外,止转套止转凸台插入第一安装部止转孔内,且止转套被轴向限位在锁紧螺母外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被第一安装部止转孔抵挡约束止转套相对第一安装部旋转;a side of the first mounting portion facing away from the second mounting portion is provided with a first mounting portion rotation preventing hole that is clearance-fitted with the rotation preventing sleeve of the rotation preventing sleeve; the rotation preventing sleeve is installed outside the locking nut, and the rotation preventing sleeve is non-rotating convex The table is inserted into the first mounting portion of the rotation preventing hole, and the rotation preventing sleeve is axially restrained outside the locking nut; the nut rotation preventing portion and the rotation preventing portion of the rotation preventing sleeve cooperate with the restriction locking nut to rotate relative to the rotation preventing sleeve The sleeve rotation preventing boss is rotated by the first mounting portion rotation preventing hole on the side facing the loosening direction of the lock nut, and the rotation preventing sleeve is rotated relative to the first mounting portion;
    螺杆、锁紧螺母不可旋转地与第二安装部、第一安装部安装在一起。The screw and the lock nut are non-rotatably mounted together with the second mounting portion and the first mounting portion.
  19. 一种曲轴连杆机构,包括曲轴、连杆组、紧固连接组件;连杆组包括连杆体、连杆大头盖、连杆大头轴瓦;紧固连接组件包括螺杆、锁紧螺母;螺杆包括外螺纹部、止转抵挡部,止转抵挡部径向凸出外螺纹部;连杆体包括连杆大头和连杆小头,连杆大头、连杆大头盖上均设有与螺杆的外螺纹部配合的通孔;A crankshaft linkage mechanism comprises a crankshaft, a connecting rod set and a fastening connection assembly; the connecting rod set comprises a connecting rod body, a connecting rod big head cover and a connecting rod big head bearing bush; the fastening connection assembly comprises a screw and a lock nut; the screw comprises The external thread portion and the rotation preventing abutting portion, the rotation preventing abutting portion radially protrudes the external thread portion; the connecting rod body comprises a connecting rod big head and a connecting rod small head, and the connecting rod big head and the connecting rod big head cover are respectively provided with external threads of the screw Through hole
    其特征在于:紧固连接组件还包括止转套、限位件;The utility model is characterized in that: the fastening connection assembly further comprises a rotation preventing sleeve and a limiting member;
    锁紧螺母的外周设有周向均匀排列、轴向的螺母止转部;The outer circumference of the lock nut is provided with a circumferentially evenly arranged, axial nut rotation stop portion;
    在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;There is only one axial anti-rotation through hole on the anti-rotation sleeve, and the anti-rotation sleeve inner rotation preventing portion is matched with the nut rotation preventing portion on the hole wall of the rotation preventing through hole; on one end surface of the rotation preventing sleeve a rotation preventing sleeve of the rotation preventing sleeve is rotated toward the unscrewing direction of the lock nut, and the resisting position of the rotation preventing protrusion of the rotation sleeve is in a circumferential direction and a direction in which the lock nut is loosened;
    在连杆大头背离连杆大头盖的一侧设有与止转套的止凸部配合的大头止转孔;a large head rotation hole that cooperates with the convex protrusion of the rotation preventing sleeve is disposed on a side of the connecting rod with the big head away from the big head cover of the connecting rod;
    连杆大头轴瓦合抱在曲轴外,连杆大头和连杆大头盖合抱在连杆大头轴瓦外;螺杆的外螺纹部依次穿过连杆大头的通孔、连杆大头盖上的通孔与锁紧螺母螺纹连接,螺杆不可旋转地与连杆大头安装在一起,螺杆、锁紧螺母将连杆大头和连杆大头盖安装在一起;The connecting rod big head bush is hug outside the crankshaft, and the connecting rod big head and the connecting rod big head cover are hug outside the connecting rod big head bush; the external thread part of the screw passes through the through hole of the connecting rod big end, the through hole and the lock on the connecting rod big head cover in turn The nut is threadedly connected, the screw is non-rotatably mounted with the big end of the connecting rod, and the screw and the lock nut are used to install the connecting rod big head and the connecting rod big head cover;
    止转套安装在锁紧螺母外,止转套止转凸台插入大头止转孔中,限位件安装在螺杆上或锁紧螺母上对止转套背离止转套止转凸部的一侧轴向限位;螺母止转部与止转套内止转部配合约束止转套相对锁紧螺母相旋转,止转套止转凸台在锁紧螺母的旋松方向被大头止转孔抵挡约束止转套相对连杆大头旋转,连杆大头盖和连杆大头无相对旋转,螺杆、锁紧螺母不可旋转地与连杆大头盖和连杆大头安装在一起。The rotation sleeve is installed outside the lock nut, and the rotation sleeve of the rotation sleeve is inserted into the large rotation hole of the rotation sleeve, and the stopper member is mounted on the screw or the lock nut, and the rotation preventing sleeve is away from the rotation preventing convex portion of the rotation sleeve The lateral axial limit; the nut rotation stop portion and the rotation stop portion of the rotation stop sleeve cooperate with the restriction rotation sleeve to rotate relative to the lock nut, and the rotation sleeve of the rotation sleeve is turned by the large rotation hole in the loosening direction of the lock nut The resisting rotation preventing sleeve rotates relative to the big end of the connecting rod, and the connecting rod big head cover and the connecting rod big head have no relative rotation, and the screw and the locking nut are non-rotatably mounted together with the connecting rod big head cover and the connecting rod big head.
  20. 一种紧固连接组件,包括锁紧螺母;其特征在于:还包括U形的螺纹连接件、止转套;螺纹连接件包括U形的螺纹连接件本体,在螺纹连接件本体的两端均设有外螺纹部,外螺纹部的外经小于螺纹连接件本体的外经;每端的外螺纹部均对应一个所述的锁紧螺母和止转套;锁紧螺母的外周设有周向均匀排列的螺母止转部,轴心位置设有与外螺纹部配合的螺纹孔;在止转套上仅设有一个轴向的止转通孔,止转通孔的孔壁上设有与螺母止转部配合的止转套内止转部;在止转套的一个端面上轴向凸设有约束止转套朝锁紧螺母旋松方向旋转的止转套止转凸台,止转套止转凸台的抵挡位置在周向方向、朝向锁紧螺母旋松方向;A fastening connection assembly, comprising a lock nut; further comprising: a U-shaped threaded connection member and a rotation preventing sleeve; the threaded connection member comprises a U-shaped threaded connection body body at both ends of the threaded connection body The external thread portion is provided, and the outer diameter of the external thread portion is smaller than the outer diameter of the threaded connector body; the external thread portion of each end corresponds to one of the lock nut and the rotation preventing sleeve; the outer circumference of the lock nut is circumferentially uniform Arranging the nut rotation stop portion, the shaft center position is provided with a threaded hole that cooperates with the external thread portion; the rotation sleeve is provided with only one axial rotation stop through hole, and the hole wall of the rotation prevention through hole is provided with the nut a rotation stop portion of the rotation preventing sleeve; the one end surface of the rotation sleeve is axially convexly provided with a rotation preventing sleeve of the rotation preventing sleeve rotating toward the loosening direction of the lock nut, and the rotation sleeve The resisting position of the anti-rotation boss is in the circumferential direction and toward the loosening direction of the lock nut;
    螺纹连接件两端的外螺纹部分别与相应的锁紧螺母螺纹连接,止转套的止转套内止转部安装在锁紧螺母的螺母止转部外,止转套被轴向限位在锁紧螺母的螺母止转部外;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转。The external threaded portions at the two ends of the threaded connecting member are respectively screwed with the corresponding locking nut, and the rotation preventing portion of the rotation preventing sleeve of the rotation preventing sleeve is installed outside the nut rotation preventing portion of the lock nut, and the rotation preventing sleeve is axially restricted at The nut of the lock nut is outside the rotation stop portion; the nut rotation stop portion and the rotation stop portion of the rotation stop sleeve cooperate to restrain the rotation of the lock nut relative to the rotation sleeve.
  21. 一种包含如权利要求20所述的紧固连接组件的紧固连接结构,其特征在于:A fastening joint structure comprising the fastening joint assembly of claim 20, wherein:
    紧固连接结构还包括被连接件;被连接件上设有两个与所述的螺纹连接件配合的通孔,在被连接件上朝向止转套的面上设有与止转套止转凸台配合的止转孔;The fastening structure further includes a connected member; the connecting member is provided with two through holes that cooperate with the threaded connecting member, and the surface of the connected member facing the rotation preventing sleeve is provided with the rotation preventing sleeve a locking hole for the boss;
    螺纹连接件两端的外螺纹部分别穿过被连接件上相应的通孔与锁紧螺母螺纹连接,被连接件上的两个通孔约束螺纹连接件相对被连接件旋转,螺纹连接件本体轴向抵挡被连接件一侧,锁紧螺母轴向抵挡被连接件另一侧,螺纹连接件、锁紧螺母与被连接件安装在一起;The external threaded portions at the two ends of the threaded connecting member are respectively screwed to the lock nut through the corresponding through holes in the connected member, and the two through holes on the connecting member restrict the screwing member from rotating relative to the connected member, the threaded connecting body shaft To resist the side of the connected member, the lock nut axially abuts against the other side of the connected member, and the threaded connecting member and the lock nut are mounted together with the connected member;
    止转套的止转套内止转部安装在锁紧螺母的螺母止转部外并被轴向限位,止转套止转凸台插入被连接件止转孔内;螺母止转部与止转套内止转部配合约束锁紧螺母相对止转套旋转,止转套止转凸台在朝向锁紧螺母旋松方向的一侧被被连接件止转孔抵挡约束止转套相对被连接件旋转;螺纹连接件与锁紧螺母、被连接件不可旋转地安装在一起。 The rotation stop of the rotation sleeve of the rotation sleeve is installed outside the nut rotation stop of the lock nut and is axially restrained, and the rotation sleeve of the rotation sleeve is inserted into the rotation stop hole of the connected member; the nut rotation portion is The rotation preventing portion of the rotation preventing sleeve cooperates with the restraining lock nut to rotate relative to the rotation preventing sleeve, and the rotation preventing projection boss is resisted by the connecting member rotation preventing hole on the side facing the loosening direction of the locking nut. The connector rotates; the threaded connector and the lock nut are non-rotatably mounted by the connector.
PCT/CN2016/097442 2016-08-31 2016-08-31 Fastening connection structure, fastening connection assembly and crankshaft connecting rod mechanism WO2018039948A1 (en)

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CN108953354A (en) * 2018-10-11 2018-12-07 合肥惠科金扬科技有限公司 Loosing-proof device
CN108972927A (en) * 2018-08-07 2018-12-11 盐城市海通机械制造厂 A kind of sinciput guiding ruler device
CN110609156A (en) * 2019-10-24 2019-12-24 东莞市旭锐精密科技有限公司 Quick-assembling-disassembling type battery testing needle
CN110714561A (en) * 2019-10-25 2020-01-21 湖南坚致幕墙安装设计有限公司 Rear-mounted connecting piece for inner-expanding groove pipe
CN112173956A (en) * 2020-09-12 2021-01-05 北京城建八建设发展有限责任公司 Automatic unhooking device for foundation treatment
CN114172989A (en) * 2022-02-11 2022-03-11 荣耀终端有限公司 Electronic device and method for assembling electronic device
CN114476410A (en) * 2022-03-09 2022-05-13 刘芳业 Hydraulic engineering is pressure water tank for drainage station
CN114754052A (en) * 2022-04-22 2022-07-15 上海华育金属有限公司 Novel screw
CN114893491A (en) * 2022-05-14 2022-08-12 福安奥展实业有限公司 Anti-drop and anti-theft nut
CN115046098A (en) * 2022-06-22 2022-09-13 深圳创维-Rgb电子有限公司 Supporting structure and display device
CN115182919A (en) * 2022-07-27 2022-10-14 中国煤炭科工集团太原研究院有限公司 Pin shaft, pin shaft fixing device and pin shaft installation method
CN115241685A (en) * 2022-08-17 2022-10-25 国网山东省电力公司临沭县供电公司 High-altitude cable connecting terminal
CN116428260A (en) * 2023-04-12 2023-07-14 绍兴山耐高压紧固件有限公司 Fastener for nuclear power engineering and manufacturing method thereof
CN116952444A (en) * 2023-09-20 2023-10-27 江天科技有限公司 Intelligent bolt and nut gasket sensor

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CN108972927A (en) * 2018-08-07 2018-12-11 盐城市海通机械制造厂 A kind of sinciput guiding ruler device
CN108953354A (en) * 2018-10-11 2018-12-07 合肥惠科金扬科技有限公司 Loosing-proof device
CN110609156A (en) * 2019-10-24 2019-12-24 东莞市旭锐精密科技有限公司 Quick-assembling-disassembling type battery testing needle
CN110714561A (en) * 2019-10-25 2020-01-21 湖南坚致幕墙安装设计有限公司 Rear-mounted connecting piece for inner-expanding groove pipe
CN112173956A (en) * 2020-09-12 2021-01-05 北京城建八建设发展有限责任公司 Automatic unhooking device for foundation treatment
CN112173956B (en) * 2020-09-12 2022-05-17 北京城建八建设发展有限责任公司 Automatic unhooking device for foundation treatment
CN114172989A (en) * 2022-02-11 2022-03-11 荣耀终端有限公司 Electronic device and method for assembling electronic device
CN114476410A (en) * 2022-03-09 2022-05-13 刘芳业 Hydraulic engineering is pressure water tank for drainage station
CN114476410B (en) * 2022-03-09 2024-03-22 刘芳业 Hydraulic engineering drainage station is with pressure water tank
CN114754052B (en) * 2022-04-22 2023-07-25 上海华育金属有限公司 Novel screw
CN114754052A (en) * 2022-04-22 2022-07-15 上海华育金属有限公司 Novel screw
CN114893491A (en) * 2022-05-14 2022-08-12 福安奥展实业有限公司 Anti-drop and anti-theft nut
CN114893491B (en) * 2022-05-14 2024-04-19 福安奥展实业有限公司 Anti-drop anti-theft nut
CN115046098A (en) * 2022-06-22 2022-09-13 深圳创维-Rgb电子有限公司 Supporting structure and display device
CN115046098B (en) * 2022-06-22 2024-03-22 深圳创维-Rgb电子有限公司 Supporting structure and display device
CN115182919A (en) * 2022-07-27 2022-10-14 中国煤炭科工集团太原研究院有限公司 Pin shaft, pin shaft fixing device and pin shaft installation method
CN115241685A (en) * 2022-08-17 2022-10-25 国网山东省电力公司临沭县供电公司 High-altitude cable connecting terminal
CN115241685B (en) * 2022-08-17 2023-07-07 国网山东省电力公司临沭县供电公司 High-altitude cable connecting terminal
CN116428260A (en) * 2023-04-12 2023-07-14 绍兴山耐高压紧固件有限公司 Fastener for nuclear power engineering and manufacturing method thereof
CN116428260B (en) * 2023-04-12 2023-10-31 绍兴山耐高压紧固件有限公司 Fastener for nuclear power engineering and manufacturing method thereof
CN116952444A (en) * 2023-09-20 2023-10-27 江天科技有限公司 Intelligent bolt and nut gasket sensor
CN116952444B (en) * 2023-09-20 2023-12-12 江天科技有限公司 Intelligent bolt and nut gasket sensor

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