WO2017020871A1 - 一种剪刀 - Google Patents

一种剪刀 Download PDF

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Publication number
WO2017020871A1
WO2017020871A1 PCT/CN2016/093971 CN2016093971W WO2017020871A1 WO 2017020871 A1 WO2017020871 A1 WO 2017020871A1 CN 2016093971 W CN2016093971 W CN 2016093971W WO 2017020871 A1 WO2017020871 A1 WO 2017020871A1
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WO
WIPO (PCT)
Prior art keywords
rotation
hole
sleeve
screw
rotation preventing
Prior art date
Application number
PCT/CN2016/093971
Other languages
English (en)
French (fr)
Inventor
杨东佐
Original Assignee
杨东佐
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Filing date
Publication date
Application filed by 杨东佐 filed Critical 杨东佐
Publication of WO2017020871A1 publication Critical patent/WO2017020871A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/10—Locking 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/004—Mounting arrangements for axles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00—Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K21/00—Steering devices
    • B62K21/18—Connections between forks and handlebars or handlebar stems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M3/00—Construction of cranks operated by hand or foot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/10—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate gripping parts moved into their final position in relation to the body of the device by a separate operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/041—Releasable devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F16C3/10—Crankshafts assembled of several parts, e.g. by welding by crimping
    • F16C3/12—Crankshafts assembled of several parts, e.g. by welding by crimping releasably connected
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2206/00—Quick release mechanisms adapted for cycles

Definitions

  • the present invention relates to a pair of scissors, and more particularly to a pair of scissors for haircuts, households, gardens, and the like.
  • the moving blade body structure and the static blade body structure are easily loosened and gaps occur, and paper or cloth is often in the process of cutting, and the cutting is constantly occurring and stuck in the moving blade body structure.
  • the structure of the stator and the body of the static blade this is because the structure of the movable blade body connecting the scissors and the bolt and nut of the static blade body structure are reversed and loosened.
  • the pivot device has a bolt and a nut.
  • the bolt has a screw and a head.
  • the nut has a rod portion and an enlarged stop block, and a screw hole extends through the rod portion and the stopper block.
  • the retaining block of the nut is received in a stop of a scissor element counterbore therein, the stem of the nut entering the counterbore of the other scissor element.
  • the screw of the bolt is screwed to the screw hole of the nut.
  • the stopping block and the stopping portion are connected to each other in a non-circular shape of the outer edge surface, and only the nut is restrained from rotating relative to the two scissors units, but the bolt is rotatable, and thus the bolt and the nut are Still will reverse the loose. It is not as described in the patent that the bolt and the nut do not come loose because the stop block is in an anastomosed connection with the stop portion having a non-circular shape of the outer peripheral surface.
  • 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 reverse rotation of the thread pair (that is, the reverse between the threaded hole and the external threaded portion). Such as the reverse 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 fastens 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 the corresponding nut setting on the connecting piece
  • the sinking groove 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 smaller than that of the sinking groove The height, the anti-loose ferrule is an interference fit between the nut and the sinker.
  • 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.
  • 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.
  • the nut has not been prevented from rotating by using the anti-rotation sleeve.
  • the use of the anti-rotation sleeve is formed.
  • the technical problem to be solved by the present invention is to overcome the prior art that the use of the anti-rotation sleeve limits the rotation of the lock nut relative to the screw to achieve the reverse rotation of the bolt lock nut.
  • the anti-loose technical solution provides a screw sleeve to limit the rotation of the lock nut relative to the screw to realize the screw
  • the lock nut cannot be rotated relative to each other, so that the screw lock nut is not loosened by the reverse rotation and the rotation sleeve is quickly and conveniently removed from the rotation stop hole, so that the screw and the lock nut are detached quickly and conveniently. Reliable and keep the blade body and the blade body in the optimal position for the scissors.
  • a scissors comprising a first cutter body, a second cutter body, and a fastening connection assembly;
  • the first cutter body sequentially includes a first cutter head structure provided with a blade edge, a first handle, and the second cutter body includes a blade having a blade edge a second cutter head structure and a second handle;
  • a through hole that cooperates with the external thread portion of the screw is disposed at an end of the first cutter head structure adjacent to the first handle, and is disposed at an end of the second cutter head structure adjacent to the second handle a through hole engaged with the external thread portion of the screw;
  • a fastening connection assembly comprising a screw, a lock nut, a rotation preventing sleeve, an elastic buffering member, and a rotation preventing sleeve limiting member;
  • the screw is provided with a resisting portion and an external thread portion; a radially protruding external thread portion; a threaded through hole in the lock nut and a rotation stop hole communicating with the threaded
  • the outer circumference of the rotation sleeve is provided with a second rotation stop portion that cooperates with the first rotation stop portion;
  • the rotation sleeve is provided with an axial rotation stop through hole, and the hole wall of the rotation prevention through hole is provided with a hole a third axial rotation stop portion;
  • the rotation sleeve is provided with an outer circumference of the second rotation rotation portion and a hole wall of the rotation preventing hole of the lock nut; and the screw is provided with a fourth engagement with the third rotation end portion Stopping portion;
  • a take-out structure for taking out the rotation preventing sleeve installed outside the lock nut of the screw and the rotation preventing hole on the hole wall and/or the rotation preventing sleeve of the rotation preventing hole;
  • the external thread portion of the screw sequentially passes through the through hole on the first cutter head structure of the first cutter body, the through hole on the second cutter head structure of the second cutter body, the buffer member is screwed with the lock nut, the screw and the lock
  • the tightening nut rotatably mounts the first cutter body and the second cutter body; the fourth rotation stop portion of the screw is placed in the rotation stop hole of the lock nut, and the first rotation stop portion of the lock nut and the first screw portion of the lock nut.
  • the rotation sleeve is installed outside the screw provided with the fourth rotation stop portion and placed in the rotation stop hole, and the rotation stop sleeve limit member is mounted on the screw or the lock nut to axially limit the rotation sleeve to the rotation stop hole
  • the first rotation stop portion and the second rotation rotation portion cooperate to restrain the rotation of the lock nut relative to the rotation sleeve
  • the third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation of the rotation sleeve relative to the screw, and the screw and the lock nut are not Rotatingly mounted together.
  • the take-up structure includes two axial clamping holes provided on the rotation preventing sleeve or two axial clamping recesses provided on the outer circumference of the rotation preventing sleeve and communicating with the outer circumference of the rotation preventing sleeve.
  • Two or more clamping holes or clamping recesses for clamping and holding the rotation preventing sleeve from the rotation preventing hole are provided on the rotation preventing sleeve, and only when the rotation preventing sleeve is taken out, only two clamping holes or The rotation preventing sleeve is clamped in the clamping recess to take out the rotation preventing sleeve from the rotation preventing hole, so that the rotation preventing sleeve is taken out from the rotation preventing hole quickly, conveniently and reliably.
  • the rotation preventing sleeve can be removed from the rotation preventing hole by the clamping tool, so that the rotation preventing sleeve can be taken out from the rotation preventing hole more quickly and conveniently, and the rotation preventing sleeve can be ensured from the rotation preventing hole. take out.
  • Two or more clamping holes for gripping the rotation preventing sleeve from the rotation preventing hole are provided on the rotation preventing sleeve, and the structure of the rotation preventing sleeve is not required to be designed on the hole wall of the rotation preventing hole, and is formed in the forming
  • the clamping hole is formed when the sleeve is stopped, and the cost is hardly increased, and the rotation sleeve is generally designed as a standard member, so that the cost can be greatly reduced.
  • the clamping recess is provided on the outer circumference of the rotation preventing sleeve, and the concave portion can be designed and clamped on the hole wall of the rotation preventing hole.
  • the mating structure forms a clamping hole, and the hole diameter of the clamping recess can satisfy the clamping requirement while ensuring the rigidity and strength of the rotation sleeve.
  • the take-up structure includes one or more take-out grooves provided on the wall of the hole of the rotation stop hole and communicating with the hole wall of the rotation stop hole and the top surface of the rotation stop hole.
  • Two take-out slots are provided on the wall of the hole of the anti-rotation hole to facilitate the removal of the anti-rotation sleeve from the position of the take-out slot. More than one take-out slot is provided, and the slip sleeve can be taken out by slightly pulling the sleeve from the position of the take-out slot, and the take-over sleeve is particularly convenient to take out.
  • the thickness of the rotation preventing sleeve is larger than the depth of the rotation preventing hole, and the rotation preventing sleeve protruding in the rotation preventing hole protrudes
  • the outer circumference of the lock nut is provided with a take-out structure for taking out the rotation preventing sleeve from the rotation preventing hole.
  • the removal structure of the structure, the removal of the rotation sleeve does not require special tools, and the thrust sleeve is directly grasped by hand, and the rotation sleeve can be taken out from the rotation hole of the lock nut in China, and the removal is particularly convenient.
  • the take-out structure includes a take-up resisting portion provided on the outer circumference of the rotation preventing sleeve, and a take-out space formed in the axial direction between the take-off resisting portion of the rotation preventing sleeve and the lock nut.
  • the take-out structure may be a take-up resisting portion disposed on the outer sleeve of the outer sleeve of the rotation preventing sleeve provided with the second rotation preventing portion, and between the take-off resisting portion of the rotation preventing sleeve and the lock nut, and the axial direction
  • the outer sleeve of the rotation sleeve can be smaller than or equal to the outer circumference of the lock nut, and is suitable for the case where the fastening assembly does not have too much space in the radial direction, and is particularly suitable for fastening the outer circumference of the connection assembly to be small. It is not appropriate for the swivel sleeve to protrude the lock nut radially.
  • the take-out structure can be said to be disposed on the rotation preventing sleeve and protrude from the take-out groove of the lock nut in the axial direction; the groove wall of the take-out groove not having the second rotation stop portion forms a resisting portion, and the take-out groove forms a take-out space.
  • the outer sleeve of the rotation sleeve of the structure can be smaller than or equal to the inner circumference of the rotation preventing hole of the lock nut, and is suitable for the case where the fastening assembly does not have much space in the radial direction, and is particularly suitable for the outer circumference of the lock nut. The space is particularly small, and the rotation sleeve should not protrude from the rotation hole of the lock nut.
  • the take-out structure includes a take-up resisting portion disposed on the rotation preventing sleeve and radially protruding from the outer circumference of the rotation preventing sleeve provided with the second rotation preventing portion, and the outer peripheral portion of the removal resisting portion radially protruding the locking nut
  • the retaining sleeve of the structure can only protrude from the lock nut, and only the take-off resisting portion of the anti-rotation sleeve can be used, and the fastening joint assembly is suitable for the case where the axial direction is not suitable for too many protruding attachments.
  • the stop sleeve limit member is a buckle cover of an elastic buckle provided with two or more inner buckles, and the cover cover is provided with a receiving space for accommodating the lock nut; the outer circumference of the lock nut is provided There is a resisting portion that cooperates with the elastic buckle; the elastic buckle is buckled inwardly on the resisting portion of the lock nut to axially limit the side of the retaining sleeve, and the lock nut is received in the receiving space of the buckle cover.
  • the abutting portion of the lock nut can be formed together when the blank of the lock nut is upset, and the cost is low.
  • the stop sleeve limit member may be a snap ring or a buckle cover of an elastic buckle provided with two or more inner buckles; the snap ring or the buckle cover is mounted on the screw or the lock nut on the axial limit of the rotation sleeve Bit.
  • the anti-rotation sleeve limiting member is an elastic resisting cap; the resisting cap is provided with a resisting blind hole that cooperates with the external threaded portion of the screw, and an annular shape is protruded on the hole wall of the blocking blind hole.
  • the elastic retaining ring; the retaining sleeve is installed in the rotation preventing hole of the lock nut and the screw is provided with the external thread portion of the fourth rotation preventing portion, and the resisting cap is elastically deformed so that the resisting ring is fit over the screw
  • the outer threaded portion is axially restricted to one side of the rotation preventing sleeve; the resisting cap covers the rotation preventing hole of the lock nut.
  • the resisting cap makes the fastening connection assembly mounted on the scissors look aesthetically pleasing and decorative.
  • the first cutter body is a split structure
  • the first cutter head structure of the first cutter body includes the first shearing member and the connecting member of the split structure; the first shearing member is a V-shaped member.
  • a through hole that cooperates with the external threaded portion of the screw is disposed at a V-shaped corner of the first shearing member; a non-closed pivoting hole is provided at a side of the first shearing member facing the first handle;
  • One side of the first shearing member protrudes from a rotating shaft that cooperates with the pivoting hole of the first shearing member; one end of the connecting member away from the rotating shaft is fixed with the first handle, and the connecting member is rotatably mounted on the second cutting head Structurally;
  • the connecting member rotatably mounts the first handle and the second cutter body;
  • the pivoting hole of the first shearing member is laterally inserted outside the rotating shaft of the connecting member;
  • the external thread portion of the screw sequentially passes through The through hole of the second cutter structure and the external thread portion, the through hole of the first shearing member and the external thread portion, the buffer member and the lock nut are screwed, the screw and the lock nut will be the second cutter head structure and the
  • the scissors further includes a ball holder and a ball;
  • the ball holder includes a ball holder body, and a boss is protruded on opposite sides of the ball holder body, and two end faces of the two bosses are opposite to each other.
  • the distance between the two is smaller than the diameter of the ball; the ball holder is further provided with a through hole that cooperates with the external thread portion of the screw, a through hole that cooperates with the ball clearance; and a ball clearance fit is installed in the through hole of the ball frame and the ball Inner side protrudes from opposite sides of the ball holder body, the external thread portion of the screw passes through the through hole of the first cutter head structure and the external thread portion, the through hole of the ball frame and the external thread portion, and the second cutter head
  • the through hole and the buffer member matched with the external thread portion are screwed with the lock nut, and the screw and the lock nut rotatably mount the first cutter body and the second cutter body together; the first cutter head structure and the second cutter The head structure is in contact with the balls and does not contact the boss of the ball holder.
  • the invention restricts the rotation of the screw relative to the mother body and the attached body by the rotation stop resisting portion of the screw, and the rotation preventing sleeve limits the rotation of the lock nut relative to the screw, so that the screw and the lock nut are non-rotatably mounted on the mother body and the attached body to prevent the fastening.
  • the lock nut is loosened relative to the screw during use of the connecting assembly.
  • the gap sleeve and the rotation preventing hole and the lock nut generally have a clearance fit, which facilitates the installation and removal of the rotation sleeve.
  • the positional relationship between the first rotation stop portion on the rotation stop hole and the fourth rotation stop portion of the screw can correspond.
  • the rotation stop sleeve pay attention to the second rotation stop portion of the rotation prevention sleeve and The positional correspondence relationship of the third rotation stop portion, that is, the second rotation stop portion and the third rotation stop portion have a corresponding law.
  • a take-out structure for taking out the rotation preventing sleeve installed outside the rotation preventing abutting portion of the screw and the rotation preventing hole on the hole wall and/or the rotation preventing sleeve of the rotation preventing hole, and when the fastening connection assembly is removed, The steering sleeve is removed from the stop hole in a very labor-saving, fast, fast and reliable manner.
  • the first rotation stop portion and the second rotation stop portion cooperate to restrain the lock nut from rotating relative to the rotation sleeve
  • the third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation of the screw relative to the rotation sleeve So that the screw and the lock nut can not be rotated, and the screw and the lock nut will not be loosened due to the reverse rotation, so that the screw and the lock nut are kept in the originally required locking position, the thread of the screw and the lock nut.
  • the clamping force of the connection is basically unchanged during use, so that the movable blade body and the stationary blade body can be kept at the set optimal position forever, and no looseness or gap occurs due to the use time, so that The movable blade body and the stationary blade body are tightly closed and can be cut freely.
  • the outer circumference of the rotation sleeve may be a spline shape or a regular polygon or an outer gear shape;
  • the hole wall of the rotation stop hole is an inner gear shape hole that fits the outer circumference of the rotation sleeve of the outer gear type structure, or is a spline-shaped structure a spline-shaped hole that fits around the outer circumference of the rotation sleeve, or a regular polygonal hole that is matched with the regular polygonal structure rotation preventing sleeve, or an intersection structure of two or more regular polygonal holes that are matched with the regular polygonal structure rotation preventing sleeve and
  • the degree of rotation of each adjacent two regular polygon holes is 360° / the number of regular polygon holes / the number of regular polygon holes.
  • the smaller the angle of the fine adjustment lock nut the better the locking effect between the screw and the lock nut, and the locking force between the screw and the lock nut is prevented from being too large or too small.
  • a rotation stop shaft that cooperates with the rotation preventing through hole is disposed on an end surface of the external thread portion facing away from the abutting portion, and a fourth rotation preventing portion is disposed on an outer circumference of the rotation preventing shaft; a maximum outer diameter of the rotation preventing shaft is less than or equal to a thread bottom diameter of the external thread portion;
  • the rotation preventing shaft is placed in the rotation preventing hole, and the rotation preventing sleeve is installed outside the rotation preventing shaft and placed in the rotation preventing hole.
  • the third rotation stop portion is one or more axial rotation preventing bars protruding from the hole wall of the rotation preventing through hole;
  • the fourth rotation preventing portion is an axial rotation stop provided on the external thread portion and matched with the rotation preventing bar
  • the rotation stop groove is a roll-formed groove, which is formed by rolling the external thread portion of the screw;
  • the rotation stop bar on the rotation sleeve extends into the rotation stop groove of the screw to restrain the rotation of the rotation sleeve relative to the screw.
  • the hole wall of the through hole is composed of a circular arc surface and a rotation stop plane connecting the circular arc surface; the third rotation stop portion turns the rotation preventing hole on the hole wall of the through hole; the fourth rotation end is set a screw rotation stop plane that cooperates with the rotation stop plane of the rotation sleeve on the external thread portion; the rotation stop plane of the rotation sleeve and the screw rotation prevention plane cooperate to restrain the rotation of the rotation sleeve relative to the screw.
  • the fourth rotation stop portion is a rotation stop groove provided on one or more axial directions of the external thread portion, the rotation stop groove is a cutting tail groove, and the cross section is V-shaped, and gradually decreases from the tail end of the screw to the resisting portion of the screw;
  • the rotation stop portion is a rotation preventing bar protruding from the hole wall of the rotation preventing through hole, and the rotation preventing bar forms a concave-convex fit with the rotation preventing groove.
  • Fig. 1 is a perspective view showing the hairdressing scissors of the first embodiment.
  • FIG. 2 is a perspective exploded view of the hairdressing scissors of Embodiment 1.
  • Fig. 3 is a cross-sectional, schematic cross-sectional view showing the fastening joint of the hair clipper of the embodiment 1 taken along the axis of the screw.
  • FIG. 4 is a perspective exploded view of the hair clipper fastening connection assembly of Embodiment 2.
  • Fig. 5 is a perspective exploded view showing the hair clipper fastening connection assembly of the third embodiment.
  • Figure 6 is a cross-sectional, schematic cross-sectional view of the fastening assembly of the hairdressing scissors of Example 4 taken along the axis of the screw.
  • Fig. 7 is a perspective exploded view of the hairdressing scissors of the fourth embodiment.
  • Fig. 7 is a perspective exploded view showing the hair clipper fastening connection assembly of the fifth embodiment.
  • Figure 8 is a cross-sectional, schematic cross-sectional view of the fastening assembly of the hairdressing scissors of Example 5 taken along the axis of the screw.
  • Figure 9 is a cross-sectional, schematic cross-sectional view of the fastening assembly of the hairdressing scissors of Example 6 taken along the axis of the screw.
  • Figure 10 is a perspective exploded view of the hair clipper fastening assembly of the sixth embodiment.
  • Figure 11 is a perspective exploded view of the scissors of the seventh embodiment.
  • Figure 12 is a cross-sectional, schematic cross-sectional view showing the scissors of the embodiment 7 taken along the axis of the screw.
  • Figure 13 is a perspective view of the scissors of the eighth embodiment.
  • Figure 14 is a perspective view showing the other direction of the scissors of the eighth embodiment.
  • Fig. 15 is a cross-sectional, schematic cross-sectional view showing the scissor screw of the eighth embodiment.
  • Figure 16 is a perspective view of the scissors of the ninth embodiment.
  • Figure 17 is a perspective view showing the ball holder of the tenth embodiment.
  • Figure 18 is a perspective exploded view of the scissors of the tenth embodiment.
  • Figure 19 is a cross-sectional, schematic cross-sectional view showing the scissors of the embodiment 11 taken along the axis of the screw.
  • Figure 20 is a perspective exploded view of the scissors of the eleventh embodiment.
  • Figure 21 is a perspective view showing the lock nut and the rotation preventing sleeve of the twelfth embodiment.
  • Fig. 22 is a cross-sectional, schematic cross-sectional view showing the scissor screw of the thirteenth embodiment.
  • Figure 23 is a perspective exploded view of the scissors of the thirteenth embodiment.
  • Figure 24 is a perspective view of the anti-rotation sleeve of the fourteenth embodiment.
  • Figure 25 is a perspective view showing the anti-rotation sleeve of the fifteenth embodiment.
  • Figure 26 is a perspective view of the anti-rotation sleeve of the sixteenth embodiment.
  • Figure 27 is a perspective view of the anti-rotation sleeve of the seventeenth embodiment.
  • a hairdressing scissors is a dental scissors, including a movable blade body 1, a static blade body 2, and a fastening connection assembly.
  • the fastening connection assembly comprises a screw 3, a buffering member, a lock nut 4, a rotation preventing sleeve 5, and a rotation preventing sleeve limiting member.
  • the rotation preventing sleeve limiting member is a resisting nut 6, and the buffering member is a disc spring 7.
  • a threaded through hole 8 is sequentially disposed in the lock nut 4, and an inner gear-shaped rotation preventing hole 9 communicating with the threaded through hole 8 and a non-rotating hole 9 communicating with the rotation preventing hole 9 for accommodating a portion of the cylindrical nut of the resisting nut 6
  • the minimum aperture of 9 is larger than the aperture of the threaded through hole 8.
  • a first circumferential rotation preventing portion 11 is provided on the wall of the hole of the rotation preventing hole 9.
  • a plurality of uniformly circumferentially distributed triangular grooves are formed in the wall of the hole of the rotation preventing hole 9, and a triangular groove forms a first rotation preventing portion 11.
  • the corner arc transition of the outer peripheral surface of the lock nut 4 is similar to the spline shape, so that the lock nut 4 is mounted on the tooth shear to have a more beautiful appearance, and is convenient for hand-locking the lock nut 4.
  • the outer periphery of the through hole 9 and the lock nut 4 and the lock nut 4 are provided with an end surface of the rotation preventing hole 9 , and the depth of the cutout 12 is greater than the depth of the rotation preventing hole 9 , and the cutout 12
  • the bottom surface of the bottom surface is a slope having an outer low inner height and extends into the rotation preventing hole 9 at the same slope to form a cutout space communicating with the bottom surface of the rotation preventing hole 9 and the cutout groove 12.
  • the outer circumference of the rotation sleeve 5 is shaped to match the outer gear of the lock nut 4, and the outer circumference of the rotation sleeve 5 is provided with a plurality of triangular teeth uniformly arranged in a circumferential direction, and a triangular tooth forms a first with a triangular groove.
  • the rotation stop portion 11 is fitted to the second rotation stop portion 13.
  • the rotation preventing sleeve 5 is provided with an axial rotation preventing through hole 14 which includes a non-closed cylindrical hole 15 and an axial rotation of the cylindrical hole 15 and a rotation preventing strip
  • the third rotation preventing portion 17 is formed; the rotation preventing strip includes the side wall 18, the side wall 19, and the top wall 20 connecting the side wall 18 and the side wall 19. The angle between the side wall 18 and the side wall 19 is less than or equal to 90°.
  • the screw 3 is sequentially provided with an external thread portion 21 that cooperates with the threaded through hole 8 of the lock nut 4, a polished rod portion 22, and a chamfered cylindrical resisting portion 23.
  • the abutting portion 23 radially protrudes from the external thread portion 21.
  • the outer threaded portion 21 is provided with a rotation preventing strip on the rotation preventing sleeve 5
  • the mating axial rotation preventing groove forms a fourth rotation preventing portion 25 that cooperates with the third rotation preventing portion 17.
  • a positive hexagonal hole 26 for attaching and detaching the screw 3 is provided on the end surface of the resisting portion 23 facing away from the externally threaded portion 21.
  • the resisting nut 6 is identical to the outer circumference of the lock nut 4, and the axial center position is provided with a threaded through hole 28 that cooperates with the external thread portion 21 of the screw 3.
  • the disc spring 7 can be a standard member, and the center through hole 29 of the disc spring 7 is in clearance engagement with the external thread portion 21 of the screw 3.
  • the moving blade body 1 is an integrated structure, and includes a moving piece cutting portion 30, a moving piece connecting portion 31, a moving piece handle 32, a moving piece cutting portion 30 and a moving piece connecting portion 31 forming a moving piece cutting head structure;
  • the movable piece connecting portion 31 is provided with a through hole 33 that engages with the externally threaded portion 21 of the screw 3, and is coaxial with the through hole and faces away from the counterbore 34 of the stationary blade body 2.
  • the counterbore 34 is in clearance with the abutting portion 23 of the screw 3, and the depth of the counterbore 34 is greater than the thickness of the abutting portion 23 of the screw 3.
  • the appearance is beautiful, and more importantly, the resisting portion 23 of the screw 3 can be completely accommodated in the counterbore 34.
  • the protruding piece connecting portion 31 is not protruded so as not to interfere with the scissors cutting; the end of the counterbore 34 away from the through hole 33 is provided with a round chamfer, so that the appearance of the counterbore is more beautiful, and there is no sharp corner injury. hand.
  • the static blade body 2 is of a one-piece structure, and includes a static blade shearing portion 35 provided with blade teeth, a static blade connecting portion 36, a static blade handle 37, a static blade shearing portion 35, and a static blade connecting portion 36 to form a static film.
  • the cutter head structure is provided with a through hole 38 that cooperates with the external thread portion 21 of the screw 3, and is coaxial with the through hole 38 and faces away from the counterbore 39 of the rotor blade body 1; the stationary blade body 2 is Static piece of teeth scissors.
  • the counterbore 39 is matched with the lock nut 4, and the end of the counterbore 39 away from the through hole 38 is provided with a round chamfer, so that the appearance of the counterbore is more beautiful, and the hand is not injured by the sharp corner.
  • the external thread portion 21 of the screw 3 sequentially passes through the counterbore 34 and the through hole 33 in the rotor blade body 1, the through hole 38 and the counterbore 39 of the stationary blade body 2, the center through hole 29 of the disk spring 7, and the lock
  • the threaded through hole 28 of the tightening nut 4 is screwed, and the screw 3 and the lock nut 4 rotatably mount the movable blade body 1, the disc spring 7 and the stationary blade body 2;
  • the resisting portion 23 of the screw 3 is completely accommodated Placed in the counterbore 34 of the movable blade body 1, the abutting portion 23 of the screw 3 axially abuts against the movable blade body 1;
  • the disk spring 7 and the partial lock nut 4 are housed in the counterbore 34 of the scissors, and are dished
  • the side of the spring 7 provided with the recessed hole axially abuts against the bottom of the counterbore of the stationary blade body 2, and the lock nut 4 axially abuts against the
  • the first rotation preventing portion 11 of the lock nut 4 corresponds to the positional relationship of the fourth rotation preventing portion 25 of the screw 3; the rotation preventing sleeve 5 is mounted outside the external thread portion 21 of the screw 3 where the fourth rotation preventing portion 25 is provided and placed In the rotation preventing hole 9, the second rotation preventing portion 13 of the rotation preventing sleeve 5 is inserted into the corresponding first rotation preventing portion 11 of the lock nut 4 to restrain the rotation of the lock nut 4 relative to the rotation preventing sleeve 5, and the third rotation preventing sleeve 5
  • the rotation preventing portion 17 is inserted into the fourth rotation preventing portion 25 of the screw 3 to restrain the rotation of the screw 3 relative to the rotation preventing sleeve 5, and the resisting nut 6 is screwed to the external thread portion 21 to the side shaft of the rotation preventing sleeve 5 facing away from the movable blade body 1.
  • the screw 3 and the lock nut 4 are non-rotatably mounted together.
  • the resisting nut 6 is first separated from the external thread portion 21 of the screw 3, and then a tool such as a small metal piece or a small one is used.
  • the screwdriver of the font type protrudes from the escaping groove 12 of the lock nut 4 into the escaping space, and the rotation preventing sleeve 5 is taken out from the lock nut 4, and the lock nut 4 is separated from the external thread portion 21 of the screw 3. , complete the removal of the fastening connection assembly.
  • the cushioning member is a wave spring 51.
  • the cushioning member is a compression spring 61.
  • the scissors are flat shears.
  • the anti-rotation sleeve limiting member is an elastic rubber cap 71
  • the cushioning member is a disc spring 72 and a disc spring 73.
  • the elastic rubber cap 71 includes a cylindrical portion 75 that cooperates with the inner circumference of the inner gear-shaped rotation preventing hole 74, a spherical portion 76 that is connected to the cylindrical portion 75, and one of the elastic rubber caps 71 that is provided through the cylindrical portion 75.
  • the end face and the resisting blind hole 77 matched with the bottom diameter of the external thread portion 78 are provided with an annular elastic resisting ring 79 on the hole wall of the blocking blind hole 77; the minimum diameter of the resisting ring 79 is smaller than the external thread.
  • the maximum outer diameter of the portion 78 is provided.
  • a spline-shaped outer ring 81 is protruded from the spline-shaped outer periphery of the lock nut 80.
  • the external thread portion 78 of the screw 82 sequentially passes through the disc spring 72, the counterbore 84 and the through hole 85 in the movable blade body 83, the through hole 87 and the counterbore 88 of the stationary blade body 86, the disc spring 73 and the lock
  • the tightening nut 80 is screwed, and the screw 82 and the lock nut 80 rotatably mount the rotor blade 83, the disc spring 72, the disc spring 73 and the stationary blade body 86 together; the disc spring 72, the screw 82
  • the resisting portion 89 is received in the counterbore 84 of the movable blade body 83; the disc spring 73 and the partial lock nut 80 are received in the sinking body 86
  • the rotation preventing sleeve 90 is mounted outside the external thread portion 78 of the screw 82 provided with the fourth rotation preventing portion 91 and placed in the rotation preventing hole 74; the elastic rubber cap 71 is mounted on the male screw portion 78 by elastic deformation.
  • the rubber cap 71 is elastically deformed so that the resisting ring abutting ring 79 fits over the outer threaded portion 78 of the screw 82 to axially limit the side of the rotation preventing sleeve 90 away from the movable blade body 83; the rubber cap 71
  • the cylindrical portion 75 is received in the rotation preventing hole 74, the spherical portion 76 protrudes from the rotation preventing hole 74, and the rubber cap 71 covers the rotation preventing hole 74 of the lock nut 80.
  • the cutting portion of the stationary blade body 86 is not provided with serrations.
  • the scissors are flat shears.
  • the third rotation preventing portion 102 on the rotation preventing sleeve 101 that is, the rotation preventing strip is V-shaped, and is formed by the side wall 103 and the side wall 108 by circular arc chamfering.
  • the fourth rotation stop portion 105 on the screw 104 is a V-shaped groove that cooperates with the third rotation stop portion 102.
  • the third rotation stop portion 102 of the structure facilitates the screwing of the screw on the screw 104 at the same time.
  • the third rotation preventing portion 102 does not easily deform the third rotation preventing portion 102 when the thread on the screw 104 is continuously clamped after the third rotation preventing portion 102 has been molded.
  • the rotation preventing sleeve 101 is a stamping member, and a plurality of projections 106 are press-formed on one end surface of the rotation preventing sleeve 101.
  • the protrusion 106 of the rotation preventing sleeve 101 is placed on the bottom surface of the rotation preventing hole 107, so that a space is formed between the rotation preventing sleeve 101 and the bottom surface of the rotation preventing hole 107.
  • the stop sleeve limiting member is a buckle cover 121
  • the buffer member is a tower spring 122.
  • the lock nut 123 includes an outer hexagon nut body 124.
  • the outer periphery of the nut body 124 is provided with a resisting convex ring 125. Both sides of the nut body 124 axially protrude against the convex ring 125.
  • the buckle cover 121 includes a positive hexagonal cover body 126.
  • the cover body 126 is provided with a cavity 127 for receiving the lock nut 123.
  • the bottom surface of the cavity 127 is provided with a through hole 129 of the hollow screw 128.
  • the end surface of the opening end of the cavity 127 is provided with six vertical open end end faces convexly bent outwardly and then the end face of the vertical open end is bent, and the convex strip 130 is convexly convex on the inwardly facing end of the convex strip 130.
  • the portion 131, a rib 130 and the abutting portion 131 thereon form an elastic buckle 135.
  • the buckle body 126 and the elastic buckle 135 form a receiving cavity 132 that cooperates with the retaining ring 125 of the lock nut 123 and the nut body 124 that resists the convex ring 125 away from the parent side.
  • the axial length of the locking nut 123 facing away from the rotation preventing hole 133 is greater than the axial length of the resisting portion 131 on the buckle cover 121, so that the buckle cover 121 has sufficient space to be fastened to the lock nut.
  • 123 resists the convex ring 125.
  • the resisting portion 131 of the elastic buckle 135 is buckled inwardly on the resisting convex ring 125 of the lock nut 123, and the side of the anti-rotation sleeve 134 facing away from the resisting portion 131 is axially restricted.
  • the body 124 and the resisting collar 125 are received in the receiving cavity 132 of the buckle cover 121.
  • a tower spring is added to the lock nut and the static piece scissors so that there is no looseness or gap between the movable piece scissors and the static piece scissors due to the use time, so that the moving piece scissors and the static piece scissors are tightly closed. , cut freely.
  • the stopper sleeve 163 is a snap ring 151.
  • the hole wall of the through hole 152 is an internal spline, and the hole wall of the rotation stop hole 152 is uniformly circumferentially arranged with a plurality of key grooves, and one key groove forms a third rotation stop portion 153.
  • the screw 154 is provided with a resisting portion 155, a polished rod portion 156, a male screw portion 159 that engages with a threaded through hole 158 of the lock nut 157, a first rotation preventing shaft 160, and a mounting portion 161.
  • the abutting portion 155 radially protrudes from the external thread portion 159.
  • the outer circumference of the first rotation preventing shaft 160 is engaged with the hole wall of the spline-shaped rotation preventing through hole 152 as an external spline, and each of the key teeth on the outer circumference forms a fourth engagement with the key groove-shaped third rotation preventing portion 153.
  • the rotation stop portion 184 is provided with a resisting portion 155, a polished rod portion 156, a male screw portion 159 that engages with a threaded through hole 158 of the lock nut 157, a first rotation preventing shaft 160, and a mounting portion 161.
  • the abutting portion 155 radially protrudes from the external
  • the maximum outer diameter of the first rotation preventing shaft 160 is smaller than the thread bottom diameter of the external thread portion 159, and the minimum outer diameter of the first rotation preventing shaft 160 is larger than the maximum outer diameter of the mounting portion 161.
  • An annular locking groove 162 is defined in the outer circumference of the mounting portion 161. The side wall of the locking groove 162 facing the first rotation preventing shaft 160 is flush with the end surface of the first rotation preventing shaft 160, so that the snap ring 151 is axially opposite to the rotation preventing sleeve 163. When the position is limited, there is no axial gap between the rotation preventing sleeve 163 and the lock nut 157 and the snap ring 151.
  • the rotation sleeve 163 does not move axially in the slot 162, and the noise is greatly reduced in the case of large vibration.
  • the outer circumference of the resisting portion 155 includes a spline-shaped second clamping portion 164, and the circularly protruding second clamping portion 164 abuts against the convex ring 165.
  • the retaining collar 165 is coupled to the polished rod portion 156.
  • the movable blade body 166 is a split structure including a rotor handle 167 and a rotor blade member 168.
  • the movable blade cutter member 168 includes a movable piece shearing portion 169 and a movable piece connecting portion 170.
  • the movable piece connecting portion 170 is provided with a through hole 171 which cooperates with the external threaded portion 159 of the screw 154, and the inner side of the movable piece handle 167 is provided with
  • the buffer spring 172 is fitted with a spring mounting hole 173.
  • the movable piece connecting portion 170 of the movable blade head member 168 is embedded in the movable piece handle 167 at one end of the spring mounting hole 173.
  • the stationary blade body 174 is a split structure, including a static blade handle 175 and a static blade cutter member 176.
  • the static blade cutter member 176 includes a static blade shearing portion 177 and a static blade connecting portion 178, and the static blade connecting portion 178 is provided.
  • the static piece connecting portion 178 of the stationary blade member 176 is inserted into the stationary blade handle 175 and is provided with one end of a spring mounting hole 180 that engages with a spring mounting hole 173 on the movable blade handle 167.
  • the external thread portion 159 of the screw 154 sequentially passes through the first disc spring 181, the through hole 171 of the movable piece connecting portion 170, the through hole 179 of the static piece connecting portion 178, and the second disc spring 182 is screwed with the lock nut 157.
  • the screw 154 and the lock nut 157 rotatably mount the rotor blade body 166, the first disc spring 181, the second disc spring 182, and the stator blade body 174 together.
  • the first rotation stop portion 183 of the lock nut 157 corresponds to the positional relationship of the fourth rotation stop portion 184 of the screw 154, that is, the center of one of the key teeth of the screw 154 is on the same line as the center of a triangular groove of the lock nut 157.
  • the rotation preventing sleeve 163 is installed inside the rotation preventing hole 185 of the lock nut 157 and outside the first rotation preventing shaft 160 of the screw 154, and the second rotation preventing portion 186 of the rotation preventing sleeve 163 is inserted into the first rotation end portion of the lock nut 157.
  • the restraining lock nut 157 is rotated relative to the rotation preventing sleeve 163, and the fourth rotation preventing portion 184 of the screw 154 is inserted into the third rotation preventing portion 153 of the rotation preventing sleeve 163 to rotate the restraining screw 154 relative to the rotation preventing sleeve 163, and the snap ring 151 is installed.
  • the side of the stop sleeve 163 facing away from the stator bit member 176 is axially constrained, and the screw 154 and the lock nut 157 are non-rotatably mounted together.
  • the buffer spring 172 is mounted on the corresponding mounting hole to buffer and reset the rotor handle 167 and the stator handle 175.
  • a pair of scissors unlike the fourth embodiment, further includes a rivet 201.
  • the movable blade body 202 is a split structure, and includes a movable frame handle 203, a connecting member 204, and a moving piece shearing member 205.
  • the connecting member 204 and the moving piece shearing member 205 form a movable blade cutting head structure.
  • the moving piece shearing member 205 is a V-shaped member, and a through hole 210 is provided at a corner to cooperate with the external thread portion 209 of the screw 208, and a non-closed side is provided on a side of the moving piece shearing member 205 facing the moving piece handle 203.
  • a through hole (not shown) is formed on the connecting member 204 to engage with the rivet 201.
  • the pivoting hole 211 of the moving piece shearing member 205 is convexly disposed on the side of the connecting member 204 facing the moving piece shearing member 205.
  • the end of the connecting member 204 away from the rotating shaft 213 is fitted into the moving piece handle 203.
  • the stationary blade body 214 is a split structure including a static blade handle 215 and a static blade cutter head 216.
  • the static blade cutter head 216 includes an integral structure static blade shearing portion 217 and a static blade connecting portion 218, and the static blade connecting portion 218 is adjacent.
  • One end of the static blade head 216 is provided with a through hole 219 that cooperates with the external thread portion 209 of the screw 208, and one end away from the static blade tip 216 is provided with a through hole 220 and an insertion portion 221 that cooperate with the rivet 201, and cooperates with the rivet 201.
  • the through hole 220 and the fitting portion 221 are respectively adjacent to both outer sides of the static piece connecting portion 218; the fitting portion 221 of the static piece connecting portion 218 is fitted into the stationary piece handle 215.
  • the through hole (not shown) of the rivet 201 passing through the connecting piece 204 of the movable blade body 202, the through hole (not shown) of the static piece connecting portion 218 and the rivet 201, the connecting piece 204 and the stationary blade head 216 They can be mounted together in a relatively rotatable manner.
  • the pivot hole 211 of the moving piece shearing member 205 is laterally inserted outside the rotating shaft 213 of the connecting member 204, and the external thread portion 209 of the screw 208 sequentially passes through the disc spring 222, and the static blade head 216 cooperates with the external thread portion 209.
  • the through hole 219, the through hole 210 of the moving piece shearing member 205, the disc spring 223 are screwed with the lock nut 224, and the screw 208 and the lock nut 224 can rotate the stationary blade head 216 and the moving piece shearing member 205. Installed together.
  • the pivoting hole 211 of the moving piece shearing member 205 is laterally inserted outside the rotating shaft 213 of the connecting member 204.
  • the lever handle 203 drives the rotating shaft 213 of the connecting member 204 to rotate and the moving piece cutting member 205 is pivoted.
  • the hole 211 cooperates with the rotating shaft 213 of the connecting member 204 to push the moving piece shearing member 205 to rotate around the screw 208, so that the moving piece shearing member 205 and the static piece cutting portion 217 realize the shearing action, and achieve the purpose of labor saving.
  • Figure 16 is a perspective view of the scissors of the ninth embodiment.
  • the rotor blade on the shearing portion 242 of the rotor blade 241 is a circular arc blade.
  • a curved wall 244 is provided on one side of the movable blade cutter 241, and a curved blade 244 is provided on the curved wall 244 in a shape matching with the movable blade of the movable blade cutter 241.
  • a screw 246 and a lock nut (not shown) rotatably mount the stationary blade tip 243 and the rotor blade tip 241 together, and the shearing portion 242 of the rotor blade blade 241 is divided into the sipe of the stationary blade tip 243.
  • a lock nut (not shown) rotatably mount the stationary blade tip 243 and the rotor blade tip 241 together, and the shearing portion 242 of the rotor blade blade 241 is divided into the sipe of the stationary blade tip 243.
  • the scissors differs from the fourth embodiment in that the scissors further include a ball holder 261 and balls 262.
  • the ball holder 261 includes a ball holder body 263. On both sides of the ball holder body 263, a circular coaxial boss 264 and a boss 265 are protruded. The boss 264 and the boss 265 are opposite each other. The distance between the two end faces is smaller than the diameter of the ball 262; the ball frame 261 is further provided with a circular through hole 268 which cooperates with the external thread portion 267 of the screw 266, penetrates the boss 264 and the boss 264, and one is matched with the ball 262. Circular through hole 269.
  • the movable blade body 270 has a split structure including a rotor handle 271 and a rotor blade 272, and a flange 273 is bent outside the rotor blade 272.
  • the movable blade cutter head 272 has an integral structure, and includes a rotor shearing portion 274 and a rotor blade connecting portion 275.
  • the flange 273 of the rotor blade shearing portion 274 is provided with a blade tooth 276, and is disposed on the rotor blade connecting portion 275.
  • the movable piece connecting portion 275 is fitted into the movable piece handle 271.
  • the stationary blade body 278 is a split structure including a static blade handle 279 and a static blade tip 280.
  • a flange (not shown) is bent outside the stationary blade tip 280, and the stationary blade tip 280 includes a static piece.
  • the shearing portion 282 and the static piece connecting portion 283 are provided with a blade 284 on a flange (not shown) of the static piece shearing portion 282, and a male screw portion 267 is provided on the stationary piece connecting portion 283 with the screw 266.
  • the static piece connecting portion 283 is fitted into the stationary blade handle 279.
  • the height of the flange 273 is smaller than the distance between the two end faces of the boss 264 and the boss 265.
  • the height of the flange (not shown) is smaller than the distance between the two end faces of the boss 264 and the boss 265.
  • the balls 262 are mounted in the circular through holes 269 of the ball holder 261 and protrude from opposite sides of the ball holder body 263.
  • the external thread portion 267 of the screw 266 passes through the rotor from the side of the rotor blade 272 facing away from the flange.
  • the lock nut 287 is screwed, and the screw 266 and the lock nut 287 rotatably mount the movable blade body 270 and the stationary blade body 278; the movable blade cutter 272 and the stationary blade cutter 280 are in contact with the balls 262, and The boss 264 and the boss 265 of the ball holder 261 are not in contact.
  • the ball holder 261 is matched with the movable blade cutter 272 and the stationary blade cutter head 280.
  • the balls 262 are mounted in the circular through holes 269 of the ball cage 261 to respectively resist the stationary blade cutter head 280 and the rotor blade cutter 272 to form a rolling friction. The support point allows you to save effort when cutting.
  • the cushioning member is a compression spring 301.
  • the anti-rotation sleeve limiting member is an elastic rubber sleeve 302.
  • the outer circumference of the rubber sleeve 302 includes a cylindrical portion 303 and a spherical portion 304, and an annular groove 305 for increasing friction is provided on the outer circumference of the cylindrical portion 303; and an end surface penetrating the cylindrical portion 303 is provided for receiving the rotation stop
  • the sleeve 306 and the locking blind hole 308 of the locking nut 307 are provided with a blocking blind hole 311 which cooperates with the external thread portion 310 of the screw 309 at the bottom of the receiving blind hole 308, and is provided on the hole wall of the blocking blind hole 311.
  • An elastic abutment ring 312 that fits the bottom diameter of the externally threaded portion 310.
  • the hole wall of the rubber sleeve 302 that accommodates the blind hole 308 is elastic and can be turned over. When the rotation sleeve 306 is taken out, the hole wall of the rubber sleeve 302 that accommodates the blind hole 308 is folded and grasped, and the rubber sleeve 302 is taken from the screw 309. The external thread portion 310 is unplugged.
  • the rubber sleeve 302 is mounted in front of the externally threaded portion 310 of the screw 309, and the wall of the rubber sleeve 302 that accommodates the blind hole 308 is also inverted.
  • the axial length of the second rotation preventing portion 313 of the rotation preventing sleeve 306 is larger than the axial length of the first rotation preventing portion 315 of the rotation preventing hole 314 of the lock nut 307.
  • the external thread portion 310 of the screw 309 sequentially passes through the stepped through hole 318 on the structure of the rotor blade 317 of the rotor blade body 316, the through hole 321 in the structure of the stator blade 320 of the stationary blade body 319, and the compression spring 301. It is screwed to the lock nut 307.
  • the rotation preventing sleeve 306 is mounted outside the screw 309 provided with the fourth rotation preventing portion 322 and disposed in the rotation preventing hole 314.
  • the rotation preventing sleeve 306 installed in the rotation preventing hole 314 protrudes from the rotation preventing hole 314 to form a rotation preventing sleeve
  • the portion 310 protrudes from the rotation sleeve 306.
  • the rubber sleeve 302 is elastically deformed such that the resisting ring 312 is sleeved over the outer thread portion 310 of the screw 309 to axially limit one side of the rotation sleeve 306.
  • the take-up structure includes two axial clamping recesses 342 disposed on the rotation preventing sleeve 341, and the clamping recesses 342 cooperate with the triangular groove corresponding to the rotation preventing holes 343. Thereby increasing the space of the clamping recess 342.
  • the cushioning member is a tower spring 351.
  • the abutting portion 353 of the screw 352 has a conical shape.
  • the movable piece scissors is provided with a conical counterbore 354 which is engaged with the abutting portion 353 of the screw 352, and a circular through hole 356 which is connected to the small end of the counterbore 354 and engages with the external thread portion 355 of the screw 352.
  • a protruding post 359 is protruded from the bottom of the receiving blind hole 358 of the rubber sleeve 357, and a blind hole 360 is arranged at the axial center of the protruding post 359, and four circumferentially evenly distributed shafts are arranged on the end surface of the protruding post 359.
  • a resist ring 362 is provided at the end of the limit post 361.
  • the rotation preventing sleeve 363 is provided with a mounting hole 364 which is matched with the four limiting posts 361 of the rubber sleeve 357.
  • the rubber sleeve 357 is formed in the mold of the molded rubber sleeve 357 by the rotation preventing sleeve 363 after the processing, so that the limiting post 361 of the rubber sleeve 357 passes through the mounting hole 364 of the rotation preventing sleeve 363 and is resisted by the limiting post 361.
  • the ring 362 secures the rubber boot 357 to the anti-rotation sleeve 363.
  • the rotation preventing sleeve 363 is completely accommodated in the rotation preventing hole 365, and the four mounting holes 364 on the rotation preventing sleeve 363 form a take-out structure for taking out the rotation preventing sleeve 363 from the rotation preventing hole 365.
  • the hole wall of the rubber member accommodating blind hole 358 is reversed and the wall of the hole for accommodating the blind hole 358 is grasped, and the rotation preventing sleeve 363 is taken out from the rotation preventing hole 365.
  • the take-up structure includes two axial clamping holes 382 provided on the rotation preventing sleeve 381.
  • the rotation preventing sleeve 391 is further provided with a take-up resisting portion 393 having a circular convex ring shape in which the second rotation preventing portion 392 is radially protruded.
  • the take-out portion 393 and the outer circumference of the second rotation preventing portion 392 form a take-out space.
  • the rotation preventing sleeve 401 is further provided with a circular take-out groove 403 which is recessed from the outer periphery of the rotation preventing sleeve 401 and provided with the second rotation preventing portion 402.
  • the groove 403 is not provided with the groove wall of the second rotation preventing portion 402, and the take-out groove 403 forms a take-out space.
  • the rotation preventing sleeve 421 includes a second rotation preventing portion and a take-up resisting portion 423 that radially protrudes from the second rotation preventing portion, and the take-off resisting portion 423 of the rotation preventing sleeve 421.
  • a plurality of axial anti-slip grooves 424 are evenly distributed in the circumferential direction of the outer circumference, so that it is more reliable to grasp the rotation preventing sleeve 421 when the rotation preventing sleeve 421 is taken out.
  • a rotation preventing through hole 425 that is engaged with the external thread portion of the screw is provided at the axial center position of the rotation preventing sleeve 421 corresponding to the second rotation preventing portion, and is provided at the axial center position of the rotation preventing sleeve 421 corresponding to the removal receiving portion 423.
  • the through hole 425 communicates with a large hole 426 having a larger diameter than the through hole 425.
  • a reinforcing protrusion 427 is formed on the wall of the large hole 426 corresponding to the bottom surface of the large hole 426 in a position where the outer circumference of the second rotation preventing portion is not provided with the rotation preventing tooth, and the reinforcing hole 427 is not provided in the large hole 426.
  • a triangular tooth 428 is radially protruded from the wall of the hole 427, and the triangular teeth 428 are distributed on the same internal gear.
  • the maximum outer diameter of the take-off resisting portion 423 of the rotation preventing sleeve 421 is larger than the maximum outer diameter of the lock nut.
  • the axial length of the second rotation stop is equal to the depth of the rotation stop hole. The outer peripheral portion of the retaining portion and the lock nut is taken out to form a take-out space.

Abstract

一种剪刀，包括两刀体（1、2）和紧固连接组件；紧固连接组件包括螺杆（3）、锁紧螺母（4）、止转套（5）、弹性的缓冲件（7）及止转套限位件（6）；在止转孔（9）的孔壁和／或止转套上设有将安装在螺杆的锁紧螺母外和止转孔内的止转套取出的取出结构（12）；螺杆的外螺纹部（21）穿过两刀体上的通孔和缓冲件与锁紧螺母螺纹连接，螺杆和锁紧螺母将两刀体可转动地安装在一起；第一止转部（11）与第二止转部（13）配合约束锁紧螺母相对止转套旋转，第三止转部（17）与第四止转部（25）配合约束止转套相对螺杆旋转，螺杆和锁紧螺母不可转动地安装在一起。锁紧螺母相对螺杆不会反转松脱，使动片刀体和静片刀体保持在设定好的最佳位置，止转套能方便、快速、可靠的从止转孔中取出。

Description

一种剪刀 技术领域：
本发明涉及一种剪刀，特别是涉及一种用于理发、家用、园林等的剪刀。
背景技术
剪刀在使用一段时间后，动片刀体结构与静片刀体结构之间容易松动、出现缝隙，经常出现纸或布等物在剪的过程中，出现剪不断而卡在动片刀体结构与静片刀体结构之间；这是因为连接剪刀的动片刀体结构与静片刀体结构的螺栓螺母会反转松脱。
专利号为200510066425.3、公开日为2005年9月21日的发明专利中，公开了一种剪刀，具有二剪刀元件及一轴枢装置，二剪刀元件分别设有一埋头孔，贯穿该剪刀元件。该轴枢装置具有一螺栓及一螺帽。该螺栓具有一螺杆及一头部。该螺帽具有一杆部及一扩大的止动块，并有一螺孔延伸通过该杆部及该止动块。该螺帽的止动块容纳在其中的一剪刀元件埋头孔的止动部中，该螺帽的杆部即进入另一剪刀元件的埋头孔中。该螺栓的螺杆与该螺帽的螺孔相螺合。该发明中，该止动块与该止动部为外缘面非圆形的形状吻合连接，只会约束该螺帽相对二剪刀单元不会转动，但螺栓是可以转动的，因而螺栓和螺母还是会反转松脱。并不是如该专利描述的那样，由于该止动块与该止动部为外缘面非圆形的形状吻合连接，该螺栓与该螺帽不会松脱。
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。
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，就是防止螺纹副的反转(也就是内螺纹孔与外螺纹部之间的反转)，如螺栓与螺母间的反转。
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。
为了防止螺纹连接松脱，人们一直在不懈努力。
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。
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。
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。
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。
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
发明内容
针对现有技术中存在的问题，本发明要解决的技术问题是，克服现有的本领域的技术人员认采用止转套限制锁紧螺母相对螺杆转动、来实现螺栓锁紧螺母反转松脱的防松技术方案、因止转套很难或无法从止转孔中取出、导致紧固连接组件无使用价值的惯性思维，提供一种采用止转套限制锁紧螺母相对螺杆转动来实现螺杆锁紧螺母无法相对转动、使螺杆锁紧螺母不会因为反转而松脱且止转套从止转孔中取出快速、方便、可靠，从而使螺杆和锁紧螺母的拆离快速、方便、可靠并使动片刀体和静片刀体永远保持在设定好的最佳位置的剪刀。
一种剪刀，包括第一刀体、第二刀体、紧固连接组件；第一刀体依次包括设有刀刃的第一刀头结构、第一手柄，第二刀体包括设有刀刃的第二刀头结构、第二手柄；在第一刀头结构靠近第一手柄的一端上设有与螺杆的外螺纹部配合的通孔，在第二刀头结构靠近第二手柄的一端设有与螺杆的外螺纹部配合的通孔；紧固连接组件，包括螺杆、锁紧螺母、止转套，弹性的缓冲件、止转套限位件；螺杆上设有抵挡部、外螺纹部；抵挡部径向凸出外螺纹部；锁紧螺母内设有螺纹通孔和与螺纹通孔连通的止转孔，止转孔的最小孔径大于螺纹通孔的最大孔径；止转孔的孔壁上设有轴向的第一止转部；
止转套的外周设有与第一止转部配合、轴向的的第二止转部；止转套上设有轴向的止转通孔，止转通孔的孔壁上设有一个以上轴向的第三止转部；止转套设有第二止转部的外周与锁紧螺母的止转孔的孔壁配合；在螺杆上设有与第三止转部配合的第四止转部；
在止转孔的孔壁和/或止转套上、设有将安装在螺杆的锁紧螺母外和止转孔内的止转套取出的取出结构；
螺杆的外螺纹部依次穿过第一刀体的第一刀头结构上的通孔、第二刀体的第二刀头结构上的通孔、缓冲件与锁紧螺母螺纹连接，螺杆和锁紧螺母将第一刀体和第二刀体可转动地安装在一起；螺杆的第四止转部置于锁紧螺母的止转孔内，锁紧螺母的第一止转部与螺杆的第四止转部位置关系对应；
止转套安装在设有第四止转部的螺杆外并置于止转孔内，止转套限位件安装在螺杆上或锁紧螺母上将止转套轴向限位在止转孔内；第一止转部与第二止转部配合约束锁紧螺母相对止转套旋转，第三止转部与第四止转部配合约束止转套相对螺杆旋转，螺杆和锁紧螺母不可转动地安装在一起。
作为方案一的改进，取出结构包括设置在止转套上两个轴向的夹持孔或设置在止转套的外周上、与止转套外周连通的两个轴向的夹持凹陷部。在止转套上设有两个以上用来将止转套从止转孔中夹持取出的夹持孔或夹持凹陷部，取出止转套时，只需伸入两个夹持孔或夹持凹陷部内夹持住止转套从而将止转套从止转孔中取出，使止转套从止转孔中取出快速、方便、可靠。一般情况下可借助夹持工具夹持止转套将止转套从止转孔中取出，从而使止转套从止转孔中取出更加快速、方便且可确保止转套从止转孔中取出。在止转套上设有两个以上用来将止转套从止转孔中夹持取出的夹持孔，不需在止转孔的孔壁上再设计取出止转套的结构，在成型止转套时成型夹持孔，几乎不增加成本，且止转套一般设计成标准件，因此可大大降低成本。在止转套壁厚较薄、没有足够的空间设置夹持孔的情况下，在止转套外周设有夹持凹陷部结构，还可在止转孔的孔壁上设计与夹持凹陷部配合的结构形成一个夹持孔，在保证止转套刚性和强度的情况下，还能使夹持凹陷部的孔径满足夹持需要。
作为方案一的改进，取出结构包括设置在止转孔的孔壁上、与止转孔的孔壁及止转孔的顶面连通的一个以上的取出槽。在止转孔的孔壁上设有两个取出槽，便于从取出槽位置夹持取出止转套。设有一个以上的取出槽，可用一薄片工具从取出槽位置稍微撬一下止转套就可取出止转套，止转套的取出特别方便。
作为方案一的改进，止转套的厚度大于止转孔的深度，在安装在止转孔内的止转套凸出 锁紧螺母的外周设有将止转套从止转孔中取出的取出结构。这种结构的取出结构，止转套的取出不需专门的工具，直接用手抓取止转套，就可将止转套从锁紧螺母的止转孔中国取出，取出特别方便。
作为方案四的改进，取出结构包括设置在止转套外周的取出抵挡部，和在止转套的取出抵挡部与锁紧螺母之间、轴向方向形成的取出空间。
取出结构可为设置在止转套上、径向凸出设有第二止转部的止转套外周的取出抵挡部，和在止转套的取出抵挡部与锁紧螺母之间、轴向方向形成的取出空间。这种结构的止转套，止转套的外周可小于或等于锁紧螺母的外周，适合紧固连接组件在径向方向无太多空间的情况，特别适合紧固连接组件外周空间小、止转套不宜径向凸出锁紧螺母的情况。
取出结构可谓设置在止转套上、轴向凸出锁紧螺母的取出槽；取出槽不设有第二止转部的槽壁形成抵挡部，取出槽形成取出空间。这种结构的止转套，止转套的外周可小于或等于锁紧螺母的止转孔的内周，适合紧固连接组件在径向方向无太多空间的情况，特别适合锁紧螺母外周空间特别小、止转套不宜凸出锁紧螺母的止转孔的情况。
作为方案四的改进，取出结构包括设置在止转套上、径向凸出设有第二止转部的止转套外周的取出抵挡部，和取出抵挡部径向凸出锁紧螺母外周与锁紧螺母外周形成的取出空间。这种结构的止转套，在轴向方向，凸出锁紧螺母的可只有止转套的取出抵挡部，适合紧固连接组件在轴向方向不适合太多凸出附体的情况。
作为方案一的改进，止转套限位件为设有两个以上内扣的弹性卡扣的扣盖，扣盖内设有容置锁紧螺母的容置空间；在锁紧螺母的外周设有与弹性卡扣配合的抵挡部；弹性卡扣向内扣在锁紧螺母的抵挡部上对止转套一侧轴向限位，锁紧螺母容置在扣盖的容置空间内。锁紧螺母的抵挡部可在镦锻成型锁紧螺母的坯料时一起成型，成本低。
止转套限位件可为卡环或为设有两个以上内扣的弹性卡扣的扣盖；卡环或扣盖安装在螺杆上或锁紧螺母上对止转套一侧轴向限位。
作为方案一的改进，止转套限位件为弹性的抵挡帽；在抵挡帽上设有与螺杆的外螺纹部配合的抵挡盲孔，在抵挡盲孔的孔壁上凸设有圆环状的弹性的抵挡环；止转套安装在锁紧螺母的止转孔内和螺杆设有第四止转部的外螺纹部外，抵挡帽通过弹性变形使抵挡环过盈配合地套在螺杆的外螺纹部外对止转套的一侧轴向限位；抵挡帽覆盖锁紧螺母的止转孔。抵挡帽使安装在剪刀上的紧固连接组件看起来外观美观，具有装饰作用。
作为方案一至八的共同改进，第一刀体为分体式结构，第一刀体的第一刀头结构包括分体式结构的第一剪切件、连接件；第一剪切件为V形件，与螺杆的外螺纹部配合的通孔设置在第一剪切件的V形拐角处；在第一剪切件朝向第一手柄的一侧设有非闭合的枢接孔；在连接件朝向第一剪切件的一侧凸设有与第一剪切件的枢接孔配合的转轴；连接件远离转轴的一端与第一手柄固定在一起，连接件可转动地安装在第二刀头结构上；连接件将第一手柄与第二刀体可转动地安装在一起；第一剪切件的枢接孔侧向插接在连接件的转轴外；螺杆的外螺纹部依次穿过第二刀头结构与外螺纹部配合的通孔、第一剪切件与外螺纹部配合的通孔、缓冲件与锁紧螺母螺纹连接，螺杆和锁紧螺母将第二刀头结构和第一剪切件可转动地安装在一起；第一刀体、第二刀体可转动地安装在一起。
作为方案一至八的共同改进，剪刀还包括滚珠架、滚珠；滚珠架包括滚珠架本体，在滚珠架本体相背的两个面上均凸出一个凸台，两凸台相背的两个端面间的距离小于滚珠的直径；在滚珠架上还设有一个与螺杆的外螺纹部配合的通孔，一个与滚珠间隙配合的通孔；滚珠间隙配合的安装在滚珠架与滚珠配合的通孔内并凸出滚珠架本体相背的两侧，螺杆的外螺纹部穿过第一刀头结构与外螺纹部配合的通孔、滚珠架上与外螺纹部配合的通孔、第二刀头结构与外螺纹部配合的通孔、缓冲件与锁紧螺母螺纹连接，螺杆和锁紧螺母将第一刀体和第二刀体可转动地安装在一起；第一刀头结构、第二刀头结构与滚珠接触、与滚珠架的凸台不接触。
本发明的有益效果是：
既要阻止螺纹副反转防松，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。
本发明通过螺杆的止转抵挡部限制螺杆相对母体、附体转动，止转套限制锁紧螺母相对螺杆旋转，从而使螺杆和锁紧螺母不可转动地安装在母体和附体上，防止紧固连接组件在使用过程中锁紧螺母相对螺杆反转松脱。止转套与止转孔和锁紧螺母之间一般为间隙配合，便于止转套的安装和取出。
为了锁紧螺母与螺杆螺纹连接后，止转孔上的第一止转部和螺杆的第四止转部位置关系能对应，在设计止转套时注意止转套的第二止转部与第三止转部的位置对应关系，也就是第二止转部与第三止转部要有对应的规律。
在止转孔的孔壁和/或止转套上、设有将安装在螺杆的止转抵挡部外和止转孔内的止转套取出的取出结构，在拆卸紧固连接组件时，能非常省力、快速、快速、可靠地将止转套从止转孔中取出来。
螺杆与锁紧螺母螺纹连接后，第一止转部与第二止转部配合约束锁紧螺母相对止转套旋转，第三止转部与第四止转部配合约束螺杆相对止转套旋转，这样螺杆和锁紧螺母都无法转动，螺杆和锁紧螺母间就不会因为反转而松脱，使螺杆和锁紧螺母间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夹紧力在使用过程中基本无变化，因而能使使动片刀体和静片刀体永远保持在设定好的最佳位置，不因使用时间而出现松动、出现缝隙，以使动片刀体与静片刀体之间密合紧密，裁剪自如。
止转套的外周可为花键形或正多边形或外齿轮形；止转孔的孔壁为与外齿轮形结构的止转套外周配合的内齿轮形孔、或为与花键形结构的止转套外周配合的花键形孔、或为与正多边形结构止转套配合的正多边形孔、或为与正多边形结构止转套配合的两个以上结构相同的正多边形孔的相交结构且每相邻的两正多边形孔旋转的度数为360°/正多边形孔边数/正多边形孔个数。在满足加工和使用的前提下，成型越多个相互配合第一止转部和第二止转部，这样在螺杆与锁紧螺母的螺纹连接处于最佳锁紧的状态下，为了安装止转套，微调锁紧螺母时的角度越小，就能使锁紧螺母的第一止转部与螺杆的第四止转部位置关系对应，满足止转套安装需要。微调锁紧螺母的角度越小，螺杆与锁紧螺母间的锁紧效果越好，避免螺杆和锁紧螺母间的锁紧力过大或过小。
在外螺纹部背离抵挡部的端面上设有与止转通孔配合的止转轴，第四止转部设置在止转轴的外周；止转轴的最大外径小于或等于外螺纹部的螺纹底径；止转轴置于止转孔内，止转套安装在止转轴外并置于止转孔内。
第三止转部为凸设在止转通孔的孔壁上一条以上轴向的止转条；第四止转部为设置在外螺纹部上与止转条一一配合的轴向的止转槽；止转槽为碾压成型的槽，在搓制螺杆的外螺纹部时碾压成型；止转套上的止转条伸入螺杆的止转槽内约束止转套相对螺杆旋转。
止转通孔的孔壁由圆弧面和连接圆弧面的止转平面构成；第三止转部为止转通孔的孔壁上的止转套止转平面；第四止转部为设置在外螺纹部上与止转套止转平面配合的螺杆止转平面；止转套止转平面与螺杆止转平面配合约束止转套相对螺杆旋转。
第四止转部为设置在外螺纹部上一条以上轴向的止转槽，止转槽为割尾槽，横截面为V形，从螺杆的尾端向螺杆的抵挡部逐渐变小；第三止转部为凸设在止转通孔的孔壁上止转条，止转条与止转槽形成凹凸配合。
附图说明
图1为实施例1的理发剪刀的立体示意图。
图2为实施例1的理发剪刀的立体分解示意图。
图3为实施例1的理发剪刀的紧固连接组件过螺杆的轴线剖切的剖视示意图。
图4为实施例2的理发剪刀紧固连接组件的立体分解示意图。
图5为实施例3的理发剪刀紧固连接组件的立体分解示意图。
图6为实施例4的理发剪刀的紧固连接组件过螺杆的轴线剖切的剖视示意图。
图7为实施例4的理发剪刀的立体分解示意图。
图7为实施例5的理发剪刀紧固连接组件的立体分解示意图。
图8为实施例5的理发剪刀的紧固连接组件过螺杆的轴线剖切的剖视示意图。
图9为实施例6的理发剪刀的紧固连接组件过螺杆的轴线剖切的剖视示意图。
图10为实施例6的理发剪刀紧固连接组件的立体分解示意图。
图11为实施例7的剪刀的立体分解示意图。
图12为实施例7的剪刀过螺杆的轴线剖切的剖视示意图。
图13为实施例8的剪刀的立体示意图。
图14为实施例8的剪刀的另一个方向的立体示意图
图15为实施例8的剪刀过螺杆的轴线剖切的剖视示意图。
图16为实施例9的剪刀的立体示意图。
图17为实施例10的滚珠架的立体示意图。
图18为实施例10的剪刀的立体分解示意图。
图19为实施例11的剪刀过螺杆的轴线剖切的剖视示意图。
图20为实施例11的剪刀的立体分解示意图。
图21为实施例12的锁紧螺母与止转套的立体示意图。
图22为实施例13的剪刀过螺杆的轴线剖切的剖视示意图。
图23为实施例13的剪刀的立体分解示意图。
图24为实施例14的止转套的立体示意图。
图25为实施例15的止转套的立体示意图。
图26为实施例16的止转套的立体示意图。
图27为实施例17的止转套的立体示意图。
具体实施方式
实施例1
如图1至图3所示，一种理发剪刀，为牙剪，包括动片刀体1、静片刀体2、紧固连接组件。
紧固连接组件包括螺杆3、缓冲件、锁紧螺母4、止转套5、止转套限位件，止转套限位件为抵挡螺母6，缓冲件为碟形弹簧7。
锁紧螺母4内依次设有螺纹通孔8，与螺纹通孔8连通的内齿轮形状的止转孔9和与止转孔9连通用于容置部分抵挡螺母6的圆柱形，止转孔9的最小孔径大于螺纹通孔8的孔径。止转孔9的孔壁上设有周向排列的第一止转部11。在止转孔9的孔壁形成多个均匀周向分布的三角形槽，一个三角形槽形成一个第一止转部11。锁紧螺母4的外周面的转角圆弧过渡，类似花键形，使锁紧螺母4安装在牙剪上后外观更美观，且便于手旋锁紧螺母4。在锁紧螺母4上还设有两个相对轴心对称设置的避空槽12。避空槽12侧向贯通止转孔9和锁紧螺母4的外周及锁紧螺母4设有止转孔9的端面，避空槽12的深度大于止转孔9的深度，避空槽12的底面为外低内高的斜面，并以同一斜率伸入止转孔9内，形成与止转孔9的底面和避空槽12连通的避空空间。
止转套5的外周为与锁紧螺母4的内齿轮形状配合外齿轮形状，止转套5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与三角形槽的第一止转部11配合第二止转部13。止转套5上设有轴向的止转通孔14，止转通孔14包括非闭合的圆柱形孔15和径向凸出圆柱形孔15的轴向的一条止转条，止转条形成第三止转部17；止转条包括侧壁18、侧壁19和连接侧壁18、侧壁19的顶壁20，侧壁18、侧壁19的夹角小于或等于90°。
螺杆3上依次设有与锁紧螺母4的螺纹通孔8配合的外螺纹部21、光杆部22、带有倒角的圆柱形的抵挡部23。抵挡部23径向凸出外螺纹部21。在外螺纹部21上设有与止转套5上的止转条 配合的轴向的止转槽，止转槽形成一个与第三止转部17配合的第四止转部25。抵挡部23背离外螺纹部21的端面上设有用于安装与拆卸螺杆3的正六角形孔26。
抵挡螺母6包括与锁紧螺母4外周完全相同，轴心位置设有与螺杆3的外螺纹部21配合的螺纹通孔28。
碟形弹簧7可采用标准件，碟形弹簧7的中心通孔29与螺杆3的外螺纹部21间隙配合。
动片刀体1为一体式结构，依次包括动片剪切部30、动片连接部31、动片手柄32，动片剪切部30和动片连接部31形成动片刀头结构；在动片连接部31上设有与螺杆3的外螺纹部21配合的通孔33，与通孔同轴并背离静片刀体2的沉孔34。沉孔34与螺杆3的抵挡部23间隙配合，沉孔34的深度大于螺杆3的抵挡部23厚度，一方面美观，更重要的是螺杆3的抵挡部23可完全容置在沉孔34内，不会凸出动片连接部31，从而不会妨碍剪刀剪东西；沉孔34远离其通孔33的一端设有圆倒角，使沉孔的外观更美观，也不会因为尖锐的角伤手。
静片刀体2为一体式结构，依次包括设有刃齿的静片剪切部35、静片连接部36、静片手柄37，静片剪切部35、静片连接部36形成静片刀头结构；静片连接部36上设有与螺杆3的外螺纹部21配合的通孔38，与通孔38同轴并背离动片刀体1的沉孔39；静片刀体2为静片牙剪。沉孔39与锁紧螺母4间隙配合，沉孔39远离其通孔38的一端设有圆倒角，使沉孔的外观更美观，也不会因为尖锐的角伤手。
螺杆3的外螺纹部21依次穿过动片刀体1上的沉孔34和通孔33、静片刀体2的通孔38和沉孔39、碟形弹簧7的中心通孔29与锁紧螺母4的螺纹通孔28螺纹连接，螺杆3和锁紧螺母4将动片刀体1、碟形弹簧7和静片刀体2可转动地安装在一起；螺杆3的抵挡部23完全容置在动片刀体1的沉孔34内，螺杆3的抵挡部23轴向抵挡动片刀体1；碟形弹簧7和部分锁紧螺母4容置在剪刀的沉孔34内，碟形弹簧7设有凹孔的一侧轴向抵挡静片刀体2的沉孔的底部，锁紧螺母4轴向抵挡碟形弹簧7。锁紧螺母4的第一止转部11与螺杆3的第四止转部25位置关系对应；止转套5安装在螺杆3设有第四止转部25的外螺纹部21外并置于止转孔9内，止转套5的第二止转部13插入锁紧螺母4相应的第一止转部11内约束锁紧螺母4相对止转套5旋转，止转套5的第三止转部17插入螺杆3的第四止转部25内约束螺杆3相对止转套5旋转，抵挡螺母6螺纹连接在外螺纹部21上对止转套5背离动片刀体1的一侧轴向限位，螺杆3与锁紧螺母4不可转动地安装在一起。
需要将将紧固连接组件从动片刀体1和静片刀体2上拆离时，先将抵挡螺母6与螺杆3的外螺纹部21分离，再用工具如小金属片或小的一字型的螺丝批从锁紧螺母4的避空槽12伸入避空空间内将止转套5从锁紧螺母4内取出来，在将锁紧螺母4与螺杆3的外螺纹部21分离，完成紧固连接组件的拆卸。
实施例2
如图4所示，与实施例1不同的是，缓冲件为波形弹簧51。
实施例3
如图5所示，与实施例1不同的是，缓冲件为压缩弹簧61。
实施例4
如图6、图7所示，与实施例1不同的是，剪刀为平剪。止转套限位件为弹性橡胶帽71，缓冲件为碟形弹簧72、碟形弹簧73。弹性橡胶帽71包括与内齿轮形状的止转孔74的内周配合的圆柱形部75，与圆柱形部75相连的球形部76；在弹性橡胶帽71上设有贯穿圆柱形部75的一个端面、与外螺纹部78的底径配合的的抵挡盲孔77，在抵挡盲孔77的孔壁上凸设设有圆环状的弹性的抵挡环79；抵挡环79的最小孔径小于外螺纹部78的最大外径。
在锁紧螺母80的花键形外周凸设有抵挡圆凸环81。
螺杆82的外螺纹部78依次穿过碟形弹簧72、动片刀体83上的沉孔84和通孔85、静片刀体86的通孔87和沉孔88、碟形弹簧73与锁紧螺母80螺纹连接，螺杆82和锁紧螺母80将动片刀体83、碟形弹簧72、碟形弹簧73和静片刀体86可转动地安装在一起；碟形弹簧72、螺杆82的抵挡部89容置在动片刀体83的沉孔84内；碟形弹簧73和部分锁紧螺母80容置在静片刀体86的沉 孔88内；止转套90安装在螺杆82设有第四止转部91的外螺纹部78外并置于止转孔74内；弹性橡胶帽71通过弹性变形安装在外螺纹部78上对止转套90背离动片刀体83的一侧轴向限位。
橡胶帽71通过弹性变形使抵挡环抵挡环79过盈配合地套在螺杆82的外螺纹部78外对止转套90背离动片刀体83的一侧轴向限位；橡胶帽71的的圆柱形部75容置在止转孔74内，球形部76凸出止转孔74，橡胶帽71覆盖锁紧螺母80的止转孔74。
静片刀体86的剪切部上不设有刃齿。
实施例5
如图7、图8所示，与实施例1不同的是，剪刀为平剪。止转套101上的第三止转部102即止转条为V形，由侧壁103、侧壁108通过圆弧倒角形成。螺杆104上的第四止转部105为与第三止转部102配合的V形槽，这种结构的第三止转部102，便于搓制螺杆104上的螺牙时时一起碾压成型第三止转部102，在第三止转部102已成型后继续搓制螺杆104上的螺牙时，第三止转部102不易变形。
止转套101为冲压件，在止转套101的一个端面冲压成型有多个凸起106。止转套101的凸起106置于止转孔107的底面上，使止转套101与止转孔107的底面间形成避空空间
实施例6
如图9、图10所示，与实施例1不同的是，止转套限位件为一扣盖121，缓冲件为塔形弹簧122。
锁紧螺母123包括外六角形螺母本体124，在螺母本体124的外周上设有抵挡凸环125，螺母本体124两侧均轴向凸出抵挡凸环125。
扣盖121包括正六角形的扣盖本体126，在扣盖本体126内设有容置锁紧螺母123的凹腔127，在凹腔127的底面设有避空螺杆128的通孔129，在凹腔127的开孔端的端面上设有六个垂直开口端的端面凸设再向外弯曲再垂直开口端的端面弯曲的凸条130，在凸条130端部朝内的面上径向凸设有抵挡部131，一个凸条130和其上的抵挡部131形成一个弹性卡扣135。扣盖本体126与弹性卡扣135形成与锁紧螺母123的抵挡凸环125、抵挡凸环125背离母体一侧的螺母本体124配合的容置腔132。锁紧螺母123背离止转孔133的一侧凸出抵挡凸环125的轴向长度大于扣盖121上的抵挡部131的轴向长度，使扣盖121有足够的空间可以扣在锁紧螺母123的抵挡凸环125上。
安装完成止转套134后，将弹性卡扣135的抵挡部131向内扣在锁紧螺母123的抵挡凸环125上对止转套134背离抵挡部131的一侧轴向限位，部分螺母本体124和抵挡凸环125容置在扣盖121的容置腔132内。
在锁紧螺母和静片剪刀中加入一个塔形弹簧，使动片剪刀与静片剪刀之间不因使用时间而出现松动、出现缝隙，以使动片剪刀与静片剪刀之间密合紧密，裁剪自如。
实施例7
如图11、图12所示，与实施例4不同的是，止转套163限位件为卡环151。
止转通孔152的孔壁为内花键，止转通孔152的孔壁上均匀周向排列有多个键槽，一个键槽形成一个第三止转部153。
螺杆154上依次设有抵挡部155、光杆部156、与锁紧螺母157的螺纹通孔158配合的外螺纹部159、第一止转轴160、安装部161。抵挡部155径向凸出外螺纹部159。第一止转轴160的外周与花键形的止转通孔152的孔壁配合，为外花键，外周上的每个键齿形成一个与键槽形的第三止转部153配合的第四止转部184。第一止转轴160的最大外径小于外螺纹部159的螺纹底径，第一止转轴160的最小外径大于安装部161的最大外径。在安装部161的外周上设有环状的卡槽162，卡槽162朝向第一止转轴160的侧壁与第一止转轴160的端面齐平，这样卡环151对止转套163轴向限位时使止转套163与锁紧螺母157、卡环151间无轴向间隙，止转套163在卡槽162内不会轴向移动，对振动大的场合大大降低噪音。抵挡部155的外周包括花键形的第二夹持部164，径向凸出第二夹持部164的圆抵挡凸环165，圆抵 挡凸环165与光杆部156连接。
动片刀体166为分体式结构，包括动片手柄167和动片刀头件168。动片刀头件168包括动片剪切部169和动片连接部170，动片连接部170上设有与螺杆154的外螺纹部159配合的通孔171，动片手柄167内侧设有与缓冲弹簧172配合的弹簧安装孔173。动片刀头件168的动片连接部170嵌入动片手柄167设有弹簧安装孔173的一端。
静片刀体174为分体式结构，包括静片手柄175和静片刀头件176，静片刀头件176包括静片剪切部177和静片连接部178，静片连接部178上设有与螺杆154的外螺纹部159配合的通孔179，静片手柄175内侧设有与缓冲弹簧172配合的弹簧安装孔180。静片刀头件176的静片连接部178嵌入静片手柄175设有与动片手柄167上的弹簧安装孔173配合的弹簧安装孔180的一端。
螺杆154的外螺纹部159依次穿过第一碟形弹簧181、动片连接部170的通孔171、静片连接部178的通孔179、第二碟形弹簧182与锁紧螺母157螺纹连接，螺杆154和锁紧螺母157将动片刀体166、第一碟形弹簧181、第二碟形弹簧182和静片刀体174可转动地安装在一起。锁紧螺母157的第一止转部183与螺杆154的第四止转部184位置关系对应，即螺杆154的一个键齿的中心与锁紧螺母157的一个三角形槽的中心在同一直线上即可。止转套163安装在锁紧螺母157的止转孔185的内和螺杆154的第一止转轴160外，止转套163的第二止转部186插入锁紧螺母157的第一止转部183内约束锁紧螺母157相对止转套163旋转，螺杆154的第四止转部184插入止转套163的第三止转部153内约束螺杆154相对止转套163旋转，卡环151安装在螺杆154的卡槽162上对止转套163背离静片刀头件176的一侧轴向限位，螺杆154与锁紧螺母157不可转动地安装在一起。缓冲弹簧172安装在相应的安装孔上对动片手柄167与静片手柄175其缓冲及复位的作用。
实施例8
如图13至图15所示，一种剪刀，与实施例4不同的是，还包括铆钉201。
动片刀体202为分体式结构，包括分体式结构的动片手柄203、连接件204、动片剪切件205，连接件204、动片剪切件205形成动片刀头结构。动片剪切件205为V形件，在拐角处设有与螺杆208的外螺纹部209配合的通孔210，在动片剪切件205朝向动片手柄203的一侧设有非闭合的枢接孔211。在连接件204上设有与铆钉201配合的通孔(未示出)，在连接件204的朝向动片剪切件205一侧凸设有与动片剪切件205的枢接孔211配合的转轴213。连接件204远离转轴213的一端嵌入动片手柄203。
静片刀体214为分体式结构，包括静片手柄215和静片刀头216，静片刀头216包括一体式结构静片剪切部217和静片连接部218，静片连接部218靠近静片刀头216的一端设有与螺杆208的外螺纹部209配合的通孔219，远离静片刀头216的一端设有与铆钉201配合的通孔220及嵌入部221，与铆钉201配合的通孔220及嵌入部221分别靠近静片连接部218的两外侧；静片连接部218的嵌入部221嵌入静片手柄215。
铆钉201穿过动片刀体202的连接件204上的通孔(未示出)、静片连接部218与铆钉201配合的通孔(未示出)将连接件204与静片刀头216可相对转动地安装在一起。
动片剪切件205的枢接孔211侧向插接在连接件204的转轴213外，螺杆208的外螺纹部209依次穿过碟形弹簧222、静片刀头216与外螺纹部209配合的通孔219、动片剪切件205的通孔210、碟形弹簧223与锁紧螺母224螺纹连接，螺杆208和锁紧螺母224将静片刀头216和动片剪切件205可转动地安装在一起。动片剪切件205的枢接孔211侧向插接在连接件204的转轴213外，通过杠杆原理，动片手柄203带动连接件204的转轴213转动、动片剪切件205的枢接孔211通过与连接件204的转轴213配合推动动片剪切件205绕螺杆208转动，使动片剪切件205与静片剪切部217实现剪切动作，并达到省力的目的。
图16为实施例9的剪刀的立体示意图。
实施例9
如图16所示，与实施例8不同的是，动片刀头241的剪切部242上的动片刀刃为圆弧形刀刃。
在静片刀头243的剪切部242上相对动片刀头241的一侧设有弧形壁244，在弧形壁244上设有与动片刀头241的动片刀刃形状配合的刀槽245。
螺杆246和锁紧螺母(未示出)将静片刀头243和动片刀头241可转动地安装在一起，动片刀头241的剪切部242分置于静片刀头243的刀槽245内。
实施例10
如图17、图18所示，剪刀与实施例4不同的是，剪刀还包括滚珠架261、滚珠262。
滚珠架261包括滚珠架本体263，在滚珠架本体263相背的两个面上均凸出一个圆环形的同轴的凸台264、凸台265，凸台264、凸台265相背的两个端面间的距离小于滚珠262的直径；在滚珠架261上还设有一个与螺杆266的外螺纹部267配合、贯穿凸台264、凸台264的圆通孔268，一个与滚珠262间隙配合的圆形通孔269。
动片刀体270为分体式结构，包括动片手柄271和动片刀头272，在动片刀头272的外侧弯折有凸缘273。动片刀头272为一体式结构，包括动片剪切部274和动片连接部275，在动片剪切部274的凸缘273上设有刃齿276，在动片连接部275上设有与螺杆266的外螺纹部267配合的通孔(未示出)。动片连接部275嵌入动片手柄271内。
静片刀体278为分体式结构，包括静片手柄279和静片刀头280，在静片刀头280的外侧弯折有凸缘(未示出)，静片刀头280包括静片剪切部282和静片连接部283，在静片剪切部282的凸缘(未示出)上设有刃齿284，在静片连接部283上设有与螺杆266的外螺纹部267配合的通孔285。静片连接部283嵌入静片手柄279内。
凸缘273的高度小于凸台264、凸台265相背的两个端面间的距离，凸缘(未示出)的高度小于凸台264、凸台265相背的两个端面间的距离。
滚珠262安装在滚珠架261的圆形通孔269内并凸出滚珠架本体263相背的两侧，螺杆266的外螺纹部267从动片刀头272背离凸缘的一侧穿过动片刀头272的通孔(未示出)、滚珠架261上的圆通孔268、从静片刀头280朝向凸缘的一侧穿过静片刀头280的通孔285、碟形弹簧286与锁紧螺母287螺纹连接，螺杆266和锁紧螺母287将动片刀体270和静片刀体278可转动地安装在一起；动片刀头272、静片刀头280与滚珠262接触、与滚珠架261的凸台264、凸台265不接触。滚珠架261与动片刀头272、静片刀头280间隙配合，滚珠262安装在滚珠架261的圆形通孔269内分别抵挡静片刀头280与动片刀头272，形成一个滚动摩擦的支撑点，从而可以在剪切时省力。
实施例11
如图19、图20所示，与实施例4不同的是，缓冲件为一个压缩弹簧301。止转套限位件为弹性的橡胶套302。橡胶套302外周包括圆柱形部303和球形部304，在圆柱形部303外周设有用来增大摩擦的环状凹槽305；还设有贯通圆柱形部303的端面、用来容置止转套306与锁紧螺母307的容置盲孔308，在容置盲孔308的底部设有与螺杆309的外螺纹部310配合的抵挡盲孔311，在抵挡盲孔311的孔壁上设有与外螺纹部310底径配合的弹性抵挡环312。橡胶套302的容置盲孔308的孔壁具有弹性，可翻转，取出止转套306时，翻转橡胶套302的容置盲孔308的孔壁并抓取它，将橡胶套302从螺杆309的外螺纹部310上拔下。橡胶套302安装在螺杆309的外螺纹部310前，橡胶套302的容置盲孔308的孔壁也是翻转的。
止转套306的第二止转部313的轴向长度大于锁紧螺母307的止转孔314的第一止转部315的轴向长度。
螺杆309的外螺纹部310依次穿过动片刀体316的动片刀头317结构上的阶梯通孔318、静片刀体319的静片刀头320结构上的通孔321、压缩弹簧301与锁紧螺母307螺纹连接。止转套306安装在设有第四止转部322的螺杆309外并置于止转孔314内，安装在止转孔314内的止转套306凸出止转孔314形成将止转套306从止转孔314中取出的取出结构。外螺纹 部310凸出止转套306，橡胶套302通过弹性变形使抵挡环312过盈配合地套在螺杆309的外螺纹部310外对止转套306的一侧轴向限位。
实施例12
如图21所示，与实施例4不同的是，取出结构包括设置在止转套341上两个轴向的夹持凹陷部342，夹持凹陷部342与止转孔343相应的三角形槽配合，从而增大夹持凹陷部342的空间。
实施例13
如图22、图23所示，与实施例11不同的是，缓冲件为塔形弹簧351。
螺杆352的抵挡部353为圆锥形。动片剪刀上设有与螺杆352的抵挡部353配合的圆锥形的沉孔354，与沉孔354小端相连、与螺杆352的外螺纹部355配合的圆通孔356。
在橡胶套357的容置盲孔358的底部凸设有凸柱359，在凸柱359的轴心位置设有抵挡盲孔360，在凸柱359的端面上设四个周向均匀分布、轴向凸出的限位柱361，在限位柱361的端部设有抵挡环362。止转套363上设有与橡胶套357的四个限位柱361一一配合的安装孔364。将加工完成后的止转套363放入成型橡胶套357的模具中成型橡胶套357，这样橡胶套357的限位柱361穿过止转套363的安装孔364、通过限位柱361的抵挡环362将橡胶套357固定在止转套363上。
止转套363完全容置在止转孔365中，止转套363上的四个安装孔364形成将止转套363从止转孔365中取出的取出结构。取出止转套363时，将橡胶件的容置盲孔358的孔壁反转过来并抓取反过来的容置盲孔358的孔壁，将止转套363从止转孔365中取出。
实施例14
如图24所示，与实施例12不同的是，取出结构包括设置在止转套381上两个轴向的夹持孔382。
实施例15
如图25所示，与实施例11不同的是，在止转套391上还设有径向凸出第二止转部392的圆凸环形状的取出抵挡部393。取出抵挡部393与第二止转部392的外周形成取出空间。
实施例16
如图26所示，与实施例11不同的是，在止转套401上还设有从止转套401设有第二止转部402的外周内凹的圆形状的取出槽403，取出槽403不设有第二止转部402的槽壁形成抵挡部，取出槽403形成取出空间。
实施例17
如图27所示，与实施例11不同的是，止转套421包括第二止转部和径向凸出第二止转部的取出抵挡部423，在止转套421的取出抵挡部423的外周周向均匀分布多条轴向的防滑槽424，从而在取出止转套421时抓取止转套421更可靠。在止转套421对应第二止转部的轴心位置设有与螺杆的外螺纹部配合的止转通孔425，在止转套421对应取出抵挡部423的轴心位置设有与止转通孔425连通、孔径大于止转通孔425的大孔426。在大孔426的孔壁上对应第二止转部外周不设有止转齿的位置径向凸设有与大孔426的底面相连的加强凸起427，在大孔426不设有加强凸起427的孔壁上径向凸设有三角形齿428，三角形齿428分布在同一个内齿轮上。止转套421的取出抵挡部423的最大外径大于锁紧螺母的最大外径。第二止转部的轴向长度等于止转孔的深度。取出抵挡部与锁紧螺母的外周形成取出空间。

Claims (10)

  1. 一种剪刀，包括第一刀体、第二刀体、紧固连接组件；第一刀体依次包括设有刀刃的第一刀头结构、第一手柄，第二刀体包括设有刀刃的第二刀头结构、第二手柄；在第一刀头结构靠近第一手柄的一端上设有与螺杆的外螺纹部配合的通孔，在第二刀头结构靠近第二手柄的一端设有与螺杆的外螺纹部配合的通孔；
    紧固连接组件，包括螺杆、锁紧螺母；螺杆上设有抵挡部、外螺纹部；抵挡部径向凸出外螺纹部；其特征在于：还包括止转套，弹性的缓冲件、止转套限位件；
    锁紧螺母内设有螺纹通孔和与螺纹通孔连通的止转孔，止转孔的最小孔径大于螺纹通孔的最大孔径；止转孔的孔壁上设有轴向的第一止转部；
    止转套的外周设有与第一止转部配合、轴向的的第二止转部；止转套上设有轴向的止转通孔，止转通孔的孔壁上设有一个以上轴向的第三止转部；所述的止转套设有第二止转部的外周与所述的锁紧螺母的止转孔的孔壁配合；
    在螺杆上设有与第三止转部配合的第四止转部；
    在止转孔的孔壁和/或止转套上、设有将安装在螺杆的锁紧螺母外和止转孔内的止转套取出的取出结构；
    螺杆的外螺纹部依次穿过第一刀体的第一刀头结构上的通孔、第二刀体的第二刀头结构上的通孔、缓冲件与锁紧螺母螺纹连接，螺杆和锁紧螺母将第一刀体和第二刀体可转动地安装在一起；螺杆的第四止转部置于锁紧螺母的止转孔内，锁紧螺母的第一止转部与螺杆的第四止转部位置关系对应；
    止转套安装在设有第四止转部的螺杆外并置于止转孔内，止转套限位件安装在螺杆上或锁紧螺母上将止转套轴向限位在止转孔内；第一止转部与第二止转部配合约束锁紧螺母相对止转套旋转，第三止转部与第四止转部配合约束止转套相对螺杆旋转，螺杆和锁紧螺母不可转动地安装在一起。
  2. 如权利要求1所述的一种剪刀，其特征在于：所述的取出结构包括设置在止转套上两个轴向的夹持孔或设置在止转套的外周上、与止转套外周连通的两个轴向的夹持凹陷部。
  3. 如权利要求1所述的一种剪刀，其特征在于：所述的取出结构包括设置在止转孔的孔壁上、与止转孔的孔壁及止转孔的顶面连通的一个以上的取出槽。
  4. 如权利要求1所述的一种剪刀，其特征在于：所述的止转套的厚度大于止转孔的深度，在安装在止转孔内的止转套凸出锁紧螺母的外周设有将止转套从止转孔中取出的取出结构。
  5. 如权利要求4所述的一种剪刀，其特征在于：所述的取出结构包括设置在止转套外周的取出抵挡部，和在止转套的取出抵挡部与锁紧螺母之间、轴向方向形成的取出空间。
  6. 如权利要求4所述的一种剪刀，其特征在于：所述的取出结构包括设置在止转套上、径向凸出设有第二止转部的止转套外周的取出抵挡部，和取出抵挡部径向凸出锁紧螺母外周与锁紧螺母外周形成的取出空间。
  7. 如权利要求1所述的一种剪刀，其特征在于：所述的止转套限位件为设有两个以上内扣的 弹性卡扣的扣盖，扣盖内设有容置锁紧螺母的容置空间；在锁紧螺母的外周设有与弹性卡扣配合的抵挡部；弹性卡扣向内扣在锁紧螺母的抵挡部上对止转套一侧轴向限位，锁紧螺母容置在扣盖的容置空间内。
  8. 如权利要求1所述的一种剪刀，其特征在于：所述的止转套限位件为弹性的抵挡帽；在抵挡帽上设有与螺杆的外螺纹部配合的抵挡盲孔，在抵挡盲孔的孔壁上凸设有圆环状的弹性的抵挡环；止转套安装在锁紧螺母的止转孔内和螺杆设有第四止转部的外螺纹部外，抵挡帽通过弹性变形使抵挡环过盈配合地套在螺杆的外螺纹部外对止转套的一侧轴向限位；抵挡帽覆盖锁紧螺母的止转孔。
  9. 如权利要求1至8任意一项权利要求所述的一种剪刀，其特征在于：所述的第一刀体为分体式结构，所述的第一刀体的第一刀头结构包括分体式结构的第一剪切件、连接件；
    所述的第一剪切件为V形件，与螺杆的外螺纹部配合的所述通孔设置在所述第一剪切件的V形拐角处；在第一剪切件朝向第一手柄的一侧设有非闭合的枢接孔；在连接件朝向第一剪切件的一侧凸设有与第一剪切件的枢接孔配合的转轴；
    连接件远离转轴的一端与第一手柄固定在一起，连接件可转动地安装在第二刀头结构上；连接件将第一手柄与第二刀体可转动地安装在一起；
    第一剪切件的枢接孔侧向插接在连接件的转轴外；螺杆的外螺纹部依次穿过第二刀头结构与外螺纹部配合的通孔、第一剪切件与外螺纹部配合的通孔、缓冲件与锁紧螺母螺纹连接，螺杆和锁紧螺母将第二刀头结构和第一剪切件可转动地安装在一起；第一刀体、第二刀体可转动地安装在一起。
  10. 如权利要求1至8任意一项权利要求所述的一种剪刀，其特征在于：所述的剪刀还包括滚珠架、滚珠；滚珠架包括滚珠架本体，在滚珠架本体相背的两个面上均凸出一个凸台，两凸台相背的两个端面间的距离小于滚珠的直径；在滚珠架上还设有一个与螺杆的外螺纹部配合的通孔，一个与滚珠间隙配合的通孔；
    滚珠间隙配合的安装在滚珠架与滚珠配合的通孔内并凸出滚珠架本体相背的两侧，螺杆的外螺纹部穿过第一刀头结构与外螺纹部配合的通孔、滚珠架上与外螺纹部配合的通孔、第二刀头结构与外螺纹部配合的通孔、缓冲件与锁紧螺母螺纹连接，螺杆和锁紧螺母将第一刀体和第二刀体可转动地安装在一起；第一刀头结构、第二刀头结构与滚珠接触、与滚珠架的凸台不接触。
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