CN113294426A

CN113294426A - Ball-holding type locknut

Info

Publication number: CN113294426A
Application number: CN202110657024.4A
Authority: CN
Inventors: 刘启超
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-12
Filing date: 2021-06-12
Publication date: 2021-08-24

Abstract

A ball-holding type locknut is divided into a fastening part and a lockpart, wherein the lockpart comprises a chute part, a clamping part and a clamping ring part, and a clamping ring sheet and steel balls are arranged in the clamping part; the inclined groove part is provided with an inclined bottom groove, the depth of the rear side wall of the inclined bottom groove is greater than the diameter of the steel ball, and the depth of the front side wall of the inclined bottom groove is less than the diameter of the steel ball; the ball holding clip comprises two clamping columns and an elastic supporting part, the distance between the two clamping columns in the two clamping columns is smaller than the diameter of the steel ball, the ball holding clip is suspended in the inclined bottom groove, the elastic supporting part is abutted against the rear side wall of the inclined bottom groove, the steel ball is clamped between the two clamping columns and the bottom wall of the inclined bottom groove, and the structure enables the nut to be screwed but not unscrewed; and a dismounting device is additionally arranged, so that the ball holding clip can be pushed to the rear side wall, and the nut can be easily screwed out.

Description

Ball-holding type locknut

Technical Field

The invention belongs to the technical field of fasteners, and particularly relates to a ball-holding type locknut.

Background

The common fasteners comprise a bolt and nut assembly, a stud and nut assembly, a screw and the like, wherein the nut is a polygonal cylinder provided with a central threaded hole, an inner thread is arranged on the inner annular wall of the central threaded hole and matched and screwed with an outer thread on the stud for fastening and connecting two or more fastened pieces with through holes.

The fastening of the nut and the bolt is generally relatively stable. However, if the fastened member is vibrated for a long time, the vibration frequency difference exists between the connecting members, so that each connecting member in the connecting structure can generate a certain displacement, the connection between the nut and the bolt becomes loose, and even falls off, and the stability and the safety of the operation of the connecting structure and even the whole device are affected. Taking the bolt and the nut on the train track as an example, when a train passes through the track at a certain speed, the bolt and the nut on the track generate vibration with a certain frequency, so that the bolt and the nut may generate certain displacement, and the connection is loosened, therefore, on the old train track, the regular maintenance of a maintenance personnel is often needed.

All there is the fastener device that prevents to relax among a lot of practical application, and the mode that prevents the bolt looseness that is common at present has: the double-nut pressing, bolt and nut inserting keys, bolt and nut hole inserting metal rods, iron wire winding looseness prevention, bolt and nut latch meshing or direct gluing or welding and the like, but the modes are not ideal in looseness prevention effect, or are too complex in structure and inconvenient to operate.

The applicant has long studied fastener anti-loosening techniques and has previously filed a series of patents. However, the series of patent products applied in the earlier stage are complex to operate, inconvenient to produce and inconvenient to use in practical application.

Disclosure of Invention

The invention aims to solve the technical problem and provides a ball-holding type locknut which clamps a steel ball for locking so that the nut cannot be loosened under long-term vibration by simply screwing.

In order to solve the technical problems, the technical scheme adopted by the invention is that the bead-holding type anti-loose nut comprises a nut, wherein the nut is a polygonal cylinder provided with a central round hole, and an internal thread is arranged on the surface of the inner ring wall of the central round hole; the anti-loosening part is provided with a chute part, a clamping part and a clamping ring part which are sequentially connected from inside to outside by taking the fastening part as a starting point on the basis of an internal thread on the original inner ring wall, and a rotatable rotary clamping ring sheet and steel balls are arranged in the clamping part; an inclined bottom groove is formed in the inner ring wall where the inclined groove part is located, and the inclined bottom groove is composed of a lower side wall, a groove bottom wall, a front side wall, a rear side wall and an upper side wall; the lower side wall is arranged at the transition position of the chute part and the fastening part, the chute bottom wall is dug inside the inner annular wall, the front side wall is arranged at one side of the screwing direction of the internal thread on the inner annular wall, the rear side wall is arranged at one side of the unscrewing direction of the internal thread on the inner annular wall, the upper side wall is an invisible virtual wall and is arranged at the transition position of the upper side wall and the clamping part, and the chute surface of the chute at the chute bottom is the surface of the inner annular wall dug at the position; the depth of the rear side wall is greater than the diameter of the steel ball, and the depth of the front side wall is less than the diameter of the steel ball; the depth of the rear side wall is greater than that of the front side wall, so that the bottom wall of the groove is inclined relative to the groove surface, and the groove is called an inclined bottom groove; the clamping part is a central cylindrical cavity which is arranged between the oblique groove part and the clamping ring part on the inner ring wall, and the inner diameter of the cylindrical cavity is larger than or equal to the sum of the inner thread bottom diameter and twice the depth of the back side wall; the outer wall of the clamping part is a regular hexagon outer wall surface which is the same as the outer wall of the fastening part, and can also be made into a round outer wall surface; a clamping ring piece is arranged in the clamping part, the outer diameter of the clamping ring piece is equal to or slightly smaller than the inner diameter of the cylindrical cavity of the clamping part, and the inner diameter of the clamping ring piece is slightly larger than or equal to the diameter of the tooth bottom of the internal thread; when the clamping ring piece is arranged in the cylindrical cavity of the clamping part, the axial lead of the cylindrical cavity of the clamping part and the axial lead of the clamping ring piece are superposed with the axial lead of the internal thread; the ball holding clip is arranged on the clamping ring piece and comprises two clamping columns and an elastic supporting part, the two clamping columns are formed by two clamping columns, the two clamping columns are vertically fixed on the lower side face of the clamping ring piece, the inner side surfaces of the two clamping columns are flush with the annular surface formed by the inner thread tooth bottom diameter, the distance between the two clamping columns in the two clamping columns is smaller than the diameter of the steel ball, and the outer side surfaces of the two clamping columns are splayed inclined surfaces or curved surfaces which are inclined outwards and used for being matched with the spherical steel ball to clamp the steel ball; the elastic supporting and abutting piece is arranged on the lower side face of the clamping ring piece and is positioned on the outer side of the clamping column in the clamping double-column direction close to the unscrewing direction, during installation, the clamping ring piece is placed in the cylindrical cavity of the clamping part, the ball holding clip is placed in the inclined bottom groove from the invisible upper side wall direction, namely the ball holding clip is suspended in the inclined bottom groove through the clamping ring piece, the outer end of the elastic supporting and abutting piece abuts against the rear side wall of the inclined bottom groove, and the steel ball is clamped between the clamping double-column and the bottom wall of the inclined bottom groove, so that a structural cavity formed by the clamping double-column and the bottom wall of the groove can clamp the steel ball, cannot fall off under rotation and tends to elastically move towards the direction of the front side wall; the clamping ring part is a central circular hole-shaped clamping ring, and the inner diameter of the central circular hole is smaller than the outer diameter of the clamping ring piece and is larger than or equal to the diameter of the tooth bottom of the internal thread; the outer wall of the anti-loosening nut is a regular hexagon outer wall surface which is the same as the outer wall of the fastening part, or can be additionally made into a circular outer wall surface which is fixedly generated outside the cylindrical cavity of the clamping part and forms one outer end surface of the anti-loosening nut for blocking the clamping ring sheet from falling off; when the nut is screwed, the steel ball is driven towards the back side wall direction of the inclined bottom groove by the external thread on the screw rod, namely, the steel ball is driven towards the back side wall direction of the inclined bottom groove, so that the steel ball has enough containing space, and the nut can be smoothly screwed; when the nut is unscrewed, the steel balls are driven by the external threads on the screw rod in the screwing direction, namely, the steel balls are driven towards the direction of the front side wall of the inclined bottom groove, so that the containing space of the steel balls is reduced, and then the steel balls are jacked by the bottom wall of the groove, so that part of the steel balls are jacked out of the clamping double columns and jacked against the external threads on the screw rod, the nut cannot be unscrewed, and therefore the nut can only be screwed and cannot be unscrewed.

The clamping ring piece is characterized by also comprising a bayonet type dismounting device, wherein the bayonet type dismounting device comprises a bayonet lock, a positioning pin and a bayonet, and the bayonet lock is fixed on the side surface of the upper side of the clamping ring piece; the positioning pin is a component with a width; the bayonet is arranged on the circular bayonet ring and used for enabling the bayonet and the positioning pin to penetrate in parallel, the bayonet is reserved in the bayonet, the positioning pin is used for standby application, and the bayonet-detachable ball-holding locknut is integrally formed; after fastening in normal times, the bayonet lock fixed on the side surface of the upper side of the clamping ring sheet is reserved in the bayonet, the bayonet lock can also extend out to form an ear handle, and a gap is reserved in the unscrewing direction in the bayonet; when the anti-loosening nut needs to be disassembled, the positioning pin is abutted against one side, close to the screwing direction, of the clamping pin, or the lug handle is pinched, the clamping pin is pushed towards the screwing direction, the clamping ring piece is rotated towards the screwing direction, then the positioning pin is inserted into the bayonet, under the action of the elastic piece, the clamping ring piece has elastic force tending to the screwing direction, the positioning pin is abutted against the positioning pin in the bayonet by the clamping pin, the positioning pin is abutted against the bayonet, the steel ball is pushed towards the rear side wall direction of the inclined bottom groove by the clamping double columns, the steel ball is separated from the external thread on the screw rod, and at the moment, the anti-loosening nut can be unscrewed like unscrewing a common nut.

The dismounting device can be provided with various schemes, if the clamping hole type dismounting device is adopted, namely the clamping hole type dismounting device comprises a clamping hole, a positioning hole, an arc-shaped through groove and a clamping column, wherein the clamping hole is a through hole drilled on a clamping ring piece, the positioning hole is a blind hole drilled on a sloping groove part and positioned at a non-sloping bottom groove, the arc-shaped through groove is a through arc-shaped groove drilled on a circular clamping ring, the length of the arc-shaped through groove is equal to 1-2 times of the diameter of a steel ball, the tail end of the through groove, namely the end in the screwing direction, is aligned to the positioning hole, the head end of the through groove, namely the end in the screwing direction, is aligned to the clamping hole, the clamping column is equipped for standby, and the clamping hole type bead-holding locknut is integrally formed; when needs are dismantled, will block the post and pass the arc and lead to the groove head end and insert the card hole in, promote the card post again, make the centre gripping ring piece rotate and make the card hole remove to the arc and lead to the groove tail end, then continue to insert the card post, insert the locating hole with the card post in, the external screw thread on the steel ball breaks away from the screw rod this moment, can unscrew the nut with the spanner.

The two schemes are that the nut can be screwed out by a disassembling tool after the clamping ring piece is rotated to the unscrewing position and positioned, the operation is somewhat complicated, a preferable scheme is that the clamping ring piece is directly rotated, positioned and screwed out by the disassembling tool, namely the sleeve type disassembling device comprises a sleeve wrench and a clamping rod, and the sleeve wrench is characterized in that a right-angle structure at the corner of the end surface of the sleeve and the inner wall of the sleeve is arranged into an inclined surface structure on the basis of the existing inner hexagonal sleeve structure; the clamping rod is directly generated on the surface of the outer ring wall of the clamping ring piece, the side wall of the cylindrical cavity of the clamping part is provided with a transposition through hole, the transposition through hole is positioned at the corner of the hexagonal nut, the width of the transposition through hole is 2-3 times of the width of the clamping rod, and the center line of the width direction passes through the circle center of the nut and the vertex of the corner of the outer wall, so that the clamping rod passes through the corner through hole and has a slightly rotating displacement space; the outer end face of the clamping rod is a corner outer end face, the corner angle of the corner outer end face is larger than 90 degrees and smaller than or equal to 120 degrees, the position structure of the corner outer end face is the same as that of the outer side wall of the corner of the nut, namely when the nut is in a unscrewable state, the corner outer end face of the clamping rod is flush with the outer side wall of the corner of the nut, and when the nut is in a clamping state, the corner outer end face of the clamping rod is exposed out of the outer side wall of the nut; one side of the outer end face of the corner, which is deviated to the screwing direction, is provided with an inclined end face which is inclined upwards and inwards, and the inclined end face is used for matching with an inclined face of the socket wrench, so that the socket detachable ball-holding locknut is integrally formed; after locknut screws up, the kelly on the clamping ring piece can stay in the one side of screwing of transposition through-hole under the effect of elasticity prop support piece is the right side promptly, the outer terminal surface of kelly can expose outside locknut's lateral wall this moment, when needing to unscrew locknut, aim at locknut with box spanner and embolia, box spanner's inclined plane can support the outer terminal surface of kelly that exposes outside locknut's lateral wall, under the mutual extrusion of inclined plane and oblique terminal surface, the kelly can be to unscrewing one side promptly the left side displacement, until the outer terminal surface of corner of kelly and the lateral wall parallel and level of the corner of nut, at this moment, the steel ball in holding the pearl cartridge clip can break away from the external screw thread of screw rod, then box spanner continues to embolia, after wrapping most or whole nut, can directly unscrew locknut.

The depth of the rear side wall is equal to 1.1-3 times, preferably 1.5 times, of the diameter of the steel ball, and the depth of the front side wall is equal to 0.3-0.99 times, preferably 0.5 times, of the diameter of the steel ball.

The lower side wall and the upper side wall are parallel and flat, and the bottom wall of the groove is curved or flat.

The outer diameter of the clamping ring piece is equal to 0.95-1 time of the inner diameter of the cylindrical cavity of the clamping part, and the inner diameter of the clamping ring piece is equal to 1.0-1.2 times of the diameter of the thread root of the internal thread.

The distance between two clamping columns in the clamping double columns is equal to 0.3-0.99 times of the diameter of the steel ball, and preferably equal to 0.866 times.

The elastic supporting and propping piece is made of elastic materials or elastic components and can be an elastic sheet, a spring or elastic rubber.

The diameter of the steel ball is 0.55-5 times, preferably 1.5 times of the pitch of the internal thread; the width of the inclined bottom groove, namely the distance between the lower side wall and the upper side wall, is 1-2 times of the diameter of the steel ball.

One or more inclined bottom grooves can be arranged, and correspondingly, one or more ball holding clips are arranged.

Preferably, three inclined bottom grooves are arranged and are uniformly distributed on the same plane in the inclined groove part, and the width of each inclined bottom groove is 1.1 times of the diameter of the steel ball; correspondingly, the three ball holding clips are uniformly distributed and fixedly installed on the lower side surface of the clamping ring piece, and the height of the clamping double columns is 1.1 times of the diameter of the steel balls; the diameter of the steel ball is 1.5 times of the pitch of the internal thread; when locknut screwed up like this, three steel balls wherein can disperse the chucking on the screw rod external screw thread near the crest, the tooth waist and the intertooth be between two adjacent screw threads on the position of being closest to the root of a tooth, can be better with nut and screw rod chucking, make it unable shake the pine.

Compared with the prior art, the invention has the following beneficial effects:

the ball clamping device has the advantages that the ball clamping elastic clamp is adopted to clamp the steel balls between the nut and the screw, the oblique bottom groove is combined, the steel balls can be loosened from the screw when the screw is screwed, the nut is smoothly screwed, and the steel balls can clamp the screw when the screw is unscrewed, so that the nut cannot be loosened.

The ball holding clip is suspended in the inclined bottom groove by the clamping ring piece, so that the position of the ball holding clip is elastically adjusted along with the rotation of the nut under the action of the spring supporting piece, and the purpose of preventing loosening is achieved.

Thirdly, the clamping ring piece is pushed and positioned in the unscrewing direction by the aid of the dismounting device, the nut can be easily unscrewed by the aid of a wrench, and dismounting is convenient.

The three steel balls are uniformly distributed on the same plane of the inclined groove portion, and due to the fact that the threads have the inclination, the three steel balls can be respectively clamped on the positions, close to the crest, the tooth waist and the tooth bottom, of the external threads of the screw, the nut and the screw are clamped through resultant force, and the nut is prevented from loosening well.

Drawings

Fig. 1 is a schematic top view of the ball-retaining locknut of the present invention.

Fig. 2 is a schematic sectional view of the AA line position of the nut shown in fig. 1.

Fig. 3 is an exploded view of each part of the ball-holding type locknut of the present invention.

Fig. 4 is a schematic structural view of the fastening portion, the tapered slot portion and the clamping portion of the ball-holding type locknut of the present invention.

Fig. 5 is a schematic structural view of a clamping ring in the ball-holding type locknut of the present invention.

Fig. 6 is a schematic structural view of a circular collar in the ball-holding type locknut of the present invention.

Fig. 7 is an exploded view of a bayonet detachable ball-holding locknut.

Fig. 8 is a schematic top view of the bayonet detachable ball-holding locknut.

Fig. 9 is a schematic structural view of a bayonet detachable ball-holding locknut with a lug extending from a bayonet pin.

Fig. 10 is a schematic top view of the oblique groove portion of the ball-holding locknut with a detachable snap hole.

FIG. 11 is a schematic view of a clamping ring of the ball-holding locknut with a detachable clamping hole.

Fig. 12 is a schematic structural view of a circular collar in a snap-hole removable ball-holding locknut.

Fig. 13 is a schematic top view of the ball-holding locknut with a detachable locking hole.

Fig. 14 is a schematic structural view of a socket wrench in a socket detachable ball-holding locknut.

FIG. 15 is a schematic view of the structure of the clamping rod on the clamping ring of the sleeve-detachable ball-holding locknut.

FIG. 16 is a schematic structural view of the clamping ring of the ball-holding locknut of the sleeve-detachable type mounted on the cylindrical cavity.

Fig. 17 is a schematic view of the overall structure of the sleeve-detachable ball-holding locknut.

Fig. 18 is a schematic three-dimensional structure diagram of a sleeve-detachable ball-holding locknut.

In the figure: 1. the double-column clamping device comprises internal threads, 2 fastening parts, 3 anti-loosening parts, 4 oblique groove parts, 5 clamping parts, 6 clamping ring parts, 7 clamping ring pieces, 8 steel balls, 9 oblique bottom grooves, 10 lower side walls, 11 groove bottom walls, 12 front side walls, 13 rear side walls, 14 upper side walls, 15 cylindrical cavities, 16 ball holding clips, 17 clamping double columns, 18 elastic supporting pieces, 19 clamping inner side surfaces of the double columns, 20. the outer side surfaces of the clamping double columns are splayed inclined surfaces or curved surfaces which incline outwards, 21. circular clamping rings, 22. clamping pins, 23. positioning pins, 24. clamping openings, 25. lugs, 26. clamping holes, 27. positioning holes, 28. arc-shaped through grooves, 29. clamping columns, 30. socket wrenches, 31. clamping rods, 32. socket end surfaces, 33. socket inner walls, 34. inclined surfaces, 35. indexing through holes, 36. corner outer end surfaces and 37. inclined end surfaces.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to illustrate the invention but not to limit it further, and should not be construed as limiting the scope of the invention.

Example 1.

As shown in the figure, the bead-holding type anti-loose nut is manufactured and comprises a nut, wherein the nut is a polygonal cylinder provided with a central circular hole, and the surface of the inner ring wall of the central circular hole is provided with internal threads 1; the anti-loosening part 3 is provided with a chute part 4, a clamping part 5 and a clamping ring part 6 which are sequentially connected from inside to outside by taking the fastening part 2 as a starting point on the basis of the internal thread 1 on the original inner ring wall, and a rotatable rotary clamping ring piece 7 and a steel ball 8 are arranged in the clamping part 5; an inclined bottom groove 9 is formed in the inner ring wall where the inclined groove part 4 is located, and the inclined bottom groove 9 is composed of a lower side wall 10, a groove bottom wall 11, a front side wall 12, a rear side wall 13 and an upper side wall 14; the lower side wall 10 is arranged at the plane position of the transition of the chute part 4 and the fastening part 2, the chute bottom wall 11 is dug inside the inner annular wall, the front side wall 12 is arranged at one side of the screwing direction of the internal thread on the inner annular wall, the rear side wall 13 is arranged at one side of the unscrewing direction of the internal thread on the inner annular wall, the upper side wall 14 is an invisible virtual wall and is arranged at the position of the transition of the chute part 4 and the clamping part 5, and the chute surface of the chute 9 is the surface of the inner annular wall dug at the position; the depth of the rear side wall 13 is greater than the diameter of the steel ball 8, and the depth of the front side wall 12 is less than the diameter of the steel ball 8; the depth of the rear side wall 13 is generally made to be 1.1 to 3 times of the diameter of the steel ball 8, and the depth is made to be 1.5 times in the embodiment; the depth of the front side wall 12 is generally made to be 0.3 to 0.99 times, in this embodiment 0.5 times, the diameter of the steel ball 8; this makes the depth of the rear side wall 13 greater than the depth of the front side wall 12, so that the tank bottom wall 11 is inclined with respect to the tank plane, so-called inclined bottom tank 9; in this embodiment, the lower side wall 10 is formed parallel to the upper side wall 14 and is formed in a flat shape, and the tank bottom wall 11 is formed in a curved shape or a flat shape; the width of the inclined bottom groove 9, i.e. the distance between the lower side wall 10 and the upper side wall 14, is generally made to be 1-2 times, 1.1 times in the present embodiment, of the diameter of the steel ball 8; the inclined bottom groove 9 provided on the inclined groove part 4 may be one or more, and in this embodiment, three grooves are provided in uniform distribution.

The clamping part 5 is a cylindrical cavity 15 which is arranged between the oblique groove part 4 and the clamping ring part 6 on the inner ring wall, a clamping ring piece 7 is arranged in the clamping part 5, the outer diameter of the clamping ring piece 7 is equal to or slightly smaller than the inner diameter of the cylindrical cavity 15 of the clamping part 5, and the inner diameter of the clamping ring piece 7 is slightly larger than or equal to the tooth bottom diameter of the internal thread 1; the outer diameter of the clamping ring piece 7 is generally made to be 0.95 to 1 time of the inner diameter of the cylindrical cavity 15 of the clamping part 5, and the inner diameter of the clamping ring piece 7 is made to be 1.0 to 1.2 times of the root diameter of the internal thread 1; in this embodiment, the outer diameter of the clamping ring piece 7 is made to be equal to 0.99 times of the inner diameter of the cylindrical cavity 15 of the clamping part 5, and the inner diameter of the clamping ring piece 7 is made to be equal to 1 time of the root diameter of the internal thread 1; when the clamping ring piece 7 is arranged in the cylindrical cavity 15 of the clamping part 5, the axial lead of the cylindrical cavity 15 of the clamping part 5 and the axial lead of the clamping ring piece 7 are superposed with the axial lead of the internal thread 1; the clamping ring piece 7 is provided with ball holding clips 16, and the number of the ball holding clips is the same as that of the inclined bottom grooves 9; the ball holding clip 16 comprises a clamping double column 17 and an elastic supporting part 18, the clamping double column 17 is composed of two clamping columns, the clamping double column 17 is vertically fixed on the lower side surface of the clamping ring piece 7, the inner side surface 19 of the clamping double column is flush with the annular surface formed by the root diameter of the internal thread 1, the distance between the two clamping columns in the clamping double column 17 is smaller than the diameter of the steel ball 8, the distance between the two clamping columns in the clamping double column 17 is generally made to be equal to 0.3-0.99 times of the diameter of the steel ball 8, and the distance is made to be equal to 0.866 times of the diameter of the steel ball in the embodiment; the outer side surfaces of the clamping double columns are splayed inclined surfaces or curved surfaces 20 which incline outwards and are used for matching spherical steel balls 8 to clamp the steel balls 8; the elastic supporting and propping part 18 is arranged on the lower side surface of the clamping ring sheet 7 and is positioned on the outer side of the clamping column close to the unscrewing direction in the clamping double columns 17, the elastic supporting and propping part 18 is made of elastic materials or elastic components and can be an elastic sheet, a spring or elastic rubber, and the embodiment adopts an inclined strut-shaped elastic sheet as the elastic supporting and propping part 18; during installation, the ball holding clip 16 is placed into the inclined bottom groove 9 from the invisible upper side wall 14, the outer end of the elastic supporting part 18 is abutted against the rear side wall 13 of the inclined bottom groove 9, and the steel ball 8 is placed between the clamping double column 17 and the groove bottom wall 11 of the inclined bottom groove 9, so that a structural cavity formed by the clamping double column 17 and the groove bottom wall 11 can clamp the steel ball 8 and cannot fall off under rotation; the clamping ring part 6 is a circular clamping ring 21 which is fixedly arranged outside the cylindrical cavity 15 of the clamping part 5 and forms one outer end face of the locknut and is used for blocking the clamping ring piece 7 from falling off; when the nut is used, the nut is screwed into a screw according to the order of fastening the part 2 and then the anti-loosening part 3, under the action of the elastic supporting part 18, the clamping double columns 17 push the steel balls 8 to the position of the front side wall 12 of the inclined bottom groove 9, because the depth of the front side wall 12 is smaller than the diameter of the steel balls 8, and because a certain distance exists between the clamping double columns 17, the steel balls 8 are supported by the bottom wall 11 of the groove and part of the steel balls 8 are ejected out of the clamping double columns 17 to be in contact with the external threads on the screw, the diameter of the steel balls 8 is generally 0.55-5 times of the thread pitch of the internal thread 1, and the diameter of the steel balls 8 is 1.5 times of the thread pitch of the internal thread 1 in the embodiment; when the nut is screwed, the external thread on the screw rod drives the steel ball 8 to the loosening direction, namely to the rear side wall 13 direction of the inclined bottom groove 9, so that the steel ball 8 has enough accommodating space, and the nut can be screwed smoothly; when the nut unscrews, the external screw thread on the screw rod can drive the steel ball 8 to the direction of screwing, namely to the preceding lateral wall 12 direction drive of oblique kerve 9, makes the accommodation space of steel ball 8 diminish, and then withstands by tank bottom wall 11, makes a part of steel ball 8 ejecting outside centre gripping twin columns 17 and withstands the external screw thread on the screw rod for the nut can't unscrew, consequently, this kind of nut can only screw and can't unscrew.

Example 2.

Further, the clamping ring further comprises a clamping-type dismounting device, as shown in fig. 7, 8 and 9, the clamping-type dismounting device comprises a clamping pin 22, a positioning pin 23 and a clamping opening 24, and the clamping pin 22 is fixed on the upper side face of the clamping ring piece 7; the positioning pin 23 is a bar member having a width; the bayonet 24 is arranged on the circular collar 21 and used for enabling the bayonet 22 and the positioning pin 23 to penetrate in parallel, the bayonet 22 is reserved in the bayonet 24, the positioning pin 23 is an accessory and is used during disassembly, and therefore the bayonet-disassembled ball-holding locknut is integrally formed; after fastening at ordinary times, the bayonet 22 fixed on the side surface of the upper side of the clamping ring piece 7 is reserved in the bayonet 24, the bayonet 22 can also be extended out to form an ear handle 25, and a gap is reserved in the unscrewing direction in the bayonet 24; when the anti-loosening nut needs to be disassembled, the positioning pin 23 is abutted against one side, close to the screwing direction, of the clamping pin 22 or the lug 25 is pinched, then the clamping pin 22 is pushed towards the unscrewing direction, the clamping ring piece 7 is rotated towards the unscrewing direction, then the positioning pin 23 is inserted into the bayonet 24, under the action of the elastic abutting piece 18, the clamping ring piece 7 has elastic force tending to the screwing direction, so that the positioning pin 23 is abutted against the bayonet 24 by the clamping pin 22, and as the positioning pin 23 is abutted against the bayonet 24, the clamping double columns 17 push the steel balls 8 towards the rear side wall 13 of the inclined bottom groove 9 and the steel balls 8 are separated from the external threads on the screw rod, at the moment, the anti-loosening nut can be unscrewed like unscrewing a common nut.

Example 3.

As for the detaching device, as shown in fig. 10, 11, 12, and 13, a hole-locking detaching device may be further used, the hole-locking detaching device includes a hole 26, a positioning hole 27, an arc-shaped through groove 28, and a locking post 29, the hole 26 is a through hole drilled on the clamping ring plate 7, the positioning hole 27 is a blind hole drilled on the inclined groove portion 4 at a position of the non-inclined bottom groove 9, the arc-shaped through groove 28 is a through arc-shaped groove drilled on the circular collar 21, the length of the arc-shaped through groove 28 is equal to 1-2 times of the diameter of the steel ball 8, the tail end of the arc-shaped through groove 28, i.e., the loosening direction end, is aligned with the positioning hole, the head end of the arc-shaped through groove 28, i.e., the screwing direction end, is aligned with the locking hole 26, and the locking post 29 is a fitting member used in detaching; when the nut needs to be disassembled, the clamping column 29 penetrates through the head end of the arc-shaped through groove 28 and is inserted into the clamping hole 26, then the clamping column 29 is pushed, the clamping ring piece 7 rotates, the clamping hole 26 moves to the tail end of the arc-shaped through groove 28 and is aligned with the positioning hole 27, then the clamping column 29 is continuously inserted, the clamping column 29 is inserted into the positioning hole 27, at the moment, the steel ball 8 is separated from the external thread on the screw rod, and the nut can be unscrewed by using a wrench.

Example 4.

In both the above two schemes, the nut can be unscrewed by using a disassembling tool after the clamping ring piece 7 is rotated to the unscrewing position and positioned, and the operation is somewhat complicated, in the embodiment, the sleeve type disassembling device for rotationally positioning the clamping ring piece 7 and unscrewing the nut by using the disassembling tool directly is provided, the sleeve type disassembling device comprises a sleeve type wrench 30 and a clamping rod 31, the sleeve type wrench 30 is based on the existing inner hexagonal sleeve structure, and the right-angle structure at the corner of the sleeve end surface 32 and the sleeve inner wall 33 is set to be the inclined surface 34 structure; the clamping rod 31 is directly generated on the outer side wall surface of the clamping ring piece 7, the side wall of the cylindrical cavity 15 of the clamping part 5 is provided with an indexing through hole 35, the indexing through hole 35 is positioned at a corner of the hexagonal nut, the width of the indexing through hole 35 is 2-3 times of the width of the clamping rod 31, and the widthwise central line of the clamping rod passes through the center of the nut and the outer wall corner vertex of the hexagonal nut, so that the clamping rod 31 passes through the corner through hole 35 and the clamping rod 31 has a slightly rotating displacement space; the outer end face of the clamping rod 31 is a corner outer end face 36, the corner angle of the corner outer end face is greater than 90 degrees and less than or equal to 120 degrees, the corner outer end face 36 has the same structure with the outer side wall of the corner of the hexagon nut, namely when the nut is in a unscrewing state, the corner outer end face 36 of the clamping rod 31 is flush with the outer side wall of the corner of the nut, and when the nut is in a clamping state, the corner outer end face 36 of the clamping rod 31 is exposed outside the outer side wall of the nut; the side of the corner outer end surface 36, which is deviated from the screwing direction, is provided with an inclined end surface 37 which inclines upwards and inwards, and the inclined end surface 37 is used for matching with the inclined surface 34 of the socket wrench 30, so that the socket detachable type ball-holding locknut is integrally formed; after the locknut is tightened, the clamping rod 31 on the clamping ring piece 7 will stay at the screwing side, i.e. the right side, of the indexing through hole 35 under the action of the elastic supporting piece 18, at this time, the outer end face 36 of the corner of the clamping rod 31 will be exposed outside the outer side wall of the locknut, when the locknut needs to be unscrewed, the socket wrench 30 is aligned with the locknut and is sleeved in, at this time, the inclined surface 34 of the socket wrench 30 will abut against the outer end surface 36 of the corner of the clamping rod exposed outside the outer side wall of the locknut, under the mutual compression of the inclined surface 34 and the inclined end surface 37, the clamping rod 31 will move towards the unscrewing side, namely the left side, until the outer end surface 36 of the corner of the clamping rod 31 is flush with the outer side wall of the corner of the nut, at this time, the steel ball 8 in the ball holding clip 16 will be separated from the external thread of the screw, then the socket wrench 30 is continuously sleeved in to wrap most or the whole nut, and then the locknut can be directly screwed out.

Example 5.

On the basis of the above embodiments, three inclined bottom grooves 9 are provided and uniformly distributed on the same plane in the inclined groove part 4, and the width of each inclined bottom groove 4 is 1.1 times of the diameter of the steel ball 8; correspondingly, three ball holding clips 16 are arranged, are uniformly distributed and are fixedly arranged on the lower side surface of the clamping ring piece 7, and the height of the clamping double column 17 is 1.1 times of the diameter of the steel ball 8; the diameter of the steel ball 8 is 1.5 times of the pitch of the internal thread 1; when locknut screwed up like this, three steel balls 8 among them can disperse the chucking on the screw rod external screw thread and be close on crest, tooth waist and the interdental space, namely on the position that is close to the root between two adjacent screw threads, can join in marriage like this and tightly the nut with the screw rod chucking, make it unable to shake the pine.

Claims

1. A ball-holding type anti-loose nut comprises a nut, wherein the nut is a polygonal cylinder provided with a central round hole, and internal threads are arranged on the surface of the inner ring wall of the central round hole; the anti-loosening part is provided with a chute part, a clamping part and a clamping ring part which are sequentially connected from inside to outside by taking the fastening part as a starting point on the basis of an internal thread on the original inner ring wall, and a rotary clamping ring sheet and steel balls are arranged in the clamping part; an inclined bottom groove is formed in the inner ring wall of the inclined groove part, and the inclined bottom groove is composed of a lower side wall, a groove bottom wall, a front side wall, a rear side wall and an upper side wall; the lower side wall is arranged at the transition position of the inclined groove part and the fastening part, the groove bottom wall is dug inside the inner ring wall, the front side wall is arranged at one side of the inner ring wall where the internal thread is screwed, the rear side wall is arranged at one side of the inner ring wall where the internal thread is unscrewed, and the upper side wall is an invisible virtual wall and is arranged at the transition position of the upper side wall and the clamping part; the depth of the rear side wall is greater than the diameter of the steel ball, and the depth of the front side wall is less than the diameter of the steel ball; the clamping part is a central cylindrical cavity, and the inner diameter of the cylindrical cavity is greater than or equal to the bottom diameter of the internal thread plus twice the depth of the rear side wall; a clamping ring piece is arranged in the clamping part, the outer diameter of the clamping ring piece is equal to or slightly smaller than the inner diameter of the cylindrical cavity of the clamping part, and the inner diameter of the clamping ring piece is slightly larger than or equal to the diameter of the tooth bottom of the internal thread; when the clamping ring piece is arranged in the cylindrical cavity of the clamping part, the axial lead of the cylindrical cavity of the clamping part and the axial lead of the clamping ring piece are superposed with the axial lead of the internal thread; the ball holding clip is arranged on the clamping ring piece and comprises two clamping columns and an elastic supporting part, the two clamping columns are formed by two clamping columns, the two clamping columns are vertically fixed on the side face of the lower side of the clamping ring piece, the inner side surfaces of the two clamping columns are flush with the annular surface formed by the root diameter of the internal thread, the distance between the two clamping columns in the two clamping columns is smaller than the diameter of the steel ball, and the outer side surfaces of the two clamping columns are splayed inclined planes or curved surfaces which are inclined outwards; the elastic supporting and propping piece is arranged on the side surface of the lower side of the clamping ring piece and is positioned on the outer side of the clamping column in the clamping double-column direction close to the unscrewing direction; during installation, the ball holding clip is arranged in the inclined bottom groove from the invisible upper side wall, the outer end of the elastic supporting and propping piece is abutted against the rear side wall of the inclined bottom groove, and the steel ball is arranged between the clamping double columns and the bottom wall of the inclined bottom groove; the clamping ring part is a central circular hole-shaped clamping ring which is fixedly generated outside the clamping part.

2. The ball-holding type locknut of claim 1, further comprising a bayonet type dismounting device, wherein the bayonet type dismounting device comprises a bayonet lock, a positioning pin and a bayonet lock, and the bayonet lock is fixed on the upper side surface of the clamping ring piece; the positioning pin is a component with a width; the bayonet is arranged on the circular bayonet, the bayonet is reserved in the bayonet, and the positioning pin is used.

3. The ball-holding type locknut of claim 1, further comprising a clamping hole type dismounting device, wherein the clamping hole type dismounting device comprises a clamping hole, a positioning hole, an arc-shaped through groove and a clamping column, the clamping hole is a through hole drilled on the clamping ring piece, the positioning hole is a blind hole drilled on the inclined groove part and positioned in a non-inclined bottom groove, the arc-shaped through groove is a through arc-shaped groove drilled on the circular retainer ring, the length of the arc-shaped through groove is equal to 1-2 times of the diameter of the steel ball, the tail end of the through groove, namely the screwing direction end, is aligned with the positioning hole, the head end of the through groove, namely the screwing direction end, is aligned with the clamping hole, and the clamping column is equipped for use.

4. The ball-holding type locknut of claim 1 further comprising a sleeve type dismounting device, said sleeve type dismounting device comprises a socket wrench and a clamping rod, said socket wrench is based on an inner hexagonal socket structure, the right angle structure of the corner between the end surface of the socket and the inner wall of the socket is set to be an inclined plane structure; the clamping rod is directly generated on the surface of the outer ring wall of the clamping ring piece, the side wall of the cylindrical cavity of the clamping part is provided with an indexing through hole, the indexing through hole is positioned at the corner of the hexagonal nut, the width of the indexing through hole is 2-3 times of the width of the clamping rod, and the center line of the width direction passes through the center of the nut and the corner vertex of the outer wall; the outer end face of the clamping rod is a corner outer end face, the position structure of the corner outer end face is the same as that of the outer side wall of the corner of the nut, namely when the nut is in a unscrewing state, the corner outer end face of the clamping rod is flush with the outer side wall of the corner of the nut, and when the nut is in a clamping state, the corner outer end face of the clamping rod is exposed out of the outer side wall of the nut; and one side of the outer end surface of the corner, which is deviated to the screwing direction, is provided with an inclined end surface which is inclined upwards and inwards.

5. The ball-retaining locknut of claims 2-4, characterized in that the depth of the rear sidewall is equal to 1.1-3 times the diameter of the steel ball, and the depth of the front sidewall is equal to 0.3-0.99 times the diameter of the steel ball.

6. The ball-retaining type locknut of claim 5, wherein the outer diameter of the gripping ring segment is equal to 0.95-1 times the inner diameter of the cylindrical cavity of the gripping portion, and the inner diameter of the gripping ring segment is equal to 1.0-1.2 times the root diameter of the internal thread.

7. The ball-retaining locknut of claim 6, characterized in that the distance between two of the clamping double columns is equal to 0.3-0.99 times the diameter of the steel ball.

8. The ball-retaining locknut of claim 7 wherein the resilient support member is made of a resilient material or a resilient member, such as a spring, a spring or a resilient rubber.

9. The ball-retaining locknut of claim 8, characterized in that the diameter of the steel ball is 0.55-5 times the pitch of the internal thread; the width of the inclined bottom groove, namely the distance between the lower side wall and the upper side wall, is 1-2 times of the diameter of the steel ball.

10. The ball-retaining locknut of claim 9 wherein said inclined bottom slots may be provided one or more, and correspondingly, said ball-retaining clips are provided one or more; when the number of the inclined bottom grooves is three, the three inclined bottom grooves are uniformly distributed on the same plane in the inclined groove part, and the width of each inclined bottom groove is 1.1 times of the diameter of the steel ball; correspondingly, the three ball holding clips are uniformly distributed and fixedly installed on the lower side surface of the clamping ring piece, and the height of the clamping double columns is 1.1 times of the diameter of the steel balls; the diameter of the steel ball is 1.5 times of the thread pitch of the internal thread.