CN216589528U

CN216589528U - Anti-theft type fastener

Info

Publication number: CN216589528U
Application number: CN202122618925.0U
Authority: CN
Inventors: 吴国海; 蒋爱华
Original assignee: Yangzhou Dongshun Mechanical Equipment Co ltd
Current assignee: Yangzhou Dongshun Mechanical Equipment Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-24
Anticipated expiration: 2031-10-29

Abstract

The utility model relates to an anti-theft fastener, which comprises a screw and a cap seat positioned at the top of the screw, wherein a fixed column is arranged at the top end of the cap seat, a rotating ring is sleeved on the fixed column, a torsion spring is arranged between the rotating ring and the fixed column, one end of the torsion spring is fixedly connected with the outer wall of the fixed column, the other end of the torsion spring is fixedly connected with the inner wall of the rotating ring, a pawl is arranged on the outer side wall of the fixed column, an anti-theft cover is covered on the outer side of the top end of the cap seat, an installation cavity is upwards formed in the bottom end of the anti-theft cover, a ratchet wheel is installed on the inner top wall of the installation cavity, the ratchet wheel is matched with the pawl, a bearing is arranged at the top end of the screw, a fixed plate is installed through the rotation of the bearing, fastening holes are correspondingly formed between the fixed plate and the bottom end of the anti-theft cover, fastening screws penetrate through the matching of the ratchet wheel and the pawl, the anti-theft cover can drive the cap seat to rotate when the anti-theft cover rotates in the positive direction, thereby realizing the screwing of the screw, when the anti-theft cover is reversely screwed, the cap seat cannot be driven to reversely rotate, so that the anti-theft function is realized.

Description

Anti-theft type fastener

Technical Field

The utility model relates to the technical field of fasteners, in particular to an anti-theft fastener.

Background

The fastener is a mechanical part which is used for fastening and connecting and has wide application, is widely applied to the industries of energy, electronics, electrical appliances, machinery, chemical engineering, metallurgy, molds, hydraulic pressure and the like, can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical engineering, instruments, supplies and the like, is a mechanical basic part which is most widely applied, in some special structures, the fastener is required to be prevented from being randomly opened by people after being fixed, a common fixing part can only realize the structure fixation and does not have the anti-theft function, and a high-strength anti-theft screw fastener is provided in a Chinese patent document with the publication number of CN214367200U and comprises a screw body and an anti-theft mechanism, wherein the screw body is provided with a T-shaped mounting groove; anti-theft device installs in T shape mounting groove, and anti-theft device includes heterotypic threaded rod, thread locking piece, the elasticity steel sheet, vaulting pole and spring, heterotypic threaded rod insert establish in T shape mounting groove and with T shape mounting groove sliding connection, and the thread section of heterotypic threaded rod and the thread locking piece threaded connection that two symmetries set up, two thread locking pieces insert respectively and establish the both sides of T shape mounting groove and all with T shape mounting groove sliding connection, and through the elasticity steel sheet elastic connection of two the same specifications between the thread locking piece, the vaulting pole passes through the inner diapire sliding connection of spring with T shape mounting groove, and the vaulting pole is located heterotypic threaded rod below, make the screw body have the theftproof performance, but overall structure is complicated, twist from two sides, to the fastener that can only twist from one end, be not convenient for use.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an anti-theft fastener that solves the problems set forth above in the background.

In order to achieve the purpose, the utility model provides the following technical scheme:

the top end of the cap base is provided with a fixed column, a rotating ring is sleeved on the fixed column, a torsion spring is arranged between the rotating ring and the fixed column, one end of the torsion spring is connected and fixed with the outer wall of the fixed column, the other end of the torsion spring is connected and fixed with the inner wall of the rotating ring, a pawl is arranged on the outer side wall of the rotating ring, an anti-theft cover covers the outer side of the top end of the cap base, an installation cavity is upwards formed in the bottom end of the anti-theft cover, a ratchet wheel is installed on the inner top wall of the installation cavity and matched with the pawl, a bearing is arranged at the top end of the screw rod, a fixed plate is installed through rotation of the bearing, fastening holes are correspondingly formed between the fixed plate and the bottom end of the anti-theft cover, and fastening screws penetrate through the fastening holes.

As a further scheme of the utility model: the anti-theft cap is characterized in that a fixing hole is formed in the side wall of the cap base, a connecting column is arranged in the fixing hole in a threaded manner, an arc-shaped connecting groove is formed in the cap base, the connecting groove corresponds to the fixing hole in position, and the connecting column is screwed out through screwing of the connecting column to be connected with the connecting groove, so that the anti-theft cap is connected with the cap base in the reverse rotation process.

As a still further scheme of the utility model: the outer end of spliced pole is provided with and revolves the head, revolve to revolve and seted up special-shaped on the head and revolve the twist hole, the effect of theftproof is realized in the setting in special-shaped hole, avoids revolving the twist head and revolves soon at will.

As a still further scheme of the utility model: the spliced pole sets up two at least around the cap base border, spread groove quantity and position correspond with the spliced pole, strengthen the stability of being connected and the atress homogeneity when counter-rotating between theftproof lid and the cap base.

As a still further scheme of the utility model: the fixed columns are three and evenly distributed on the top end of the cap base in an annular mode, the number of the pawls corresponds to that of the fixed columns, and connection stability and stress uniformity during forward rotation between the anti-theft cover and the cap base are enhanced.

As a still further scheme of the utility model: the cross-section hexagon of theftproof lid, and the top of theftproof lid is seted up the bolt groove of a style of calligraphy, twist soon when being convenient for to revolve wrong, puzzlement thief simultaneously.

As a still further scheme of the utility model: be provided with the holding ring on the inner wall of installation cavity, the bottom of holding ring is provided with the location slider, annular location spout has been seted up on the top of cap seat, the location slider slides in the spout of fixing a position, fixes a position the quick location when realizing the installation of anti-theft cover through the cooperation of holding ring, location slider and constant head tank.

Compared with the prior art, the utility model has the advantages that:

the anti-theft cap comprises a screw and a cap seat positioned at the top of the screw, wherein the outer side of the top of the cap seat is rotatably covered with the anti-theft cap, the anti-theft cap is provided with an installation cavity, a ratchet wheel and a pawl which are matched with each other are arranged between the inner top wall of the installation cavity and the top end of the cap seat, the anti-theft cap can drive the cap seat to rotate in the positive direction through the matching of the ratchet wheel and the pawl, the anti-theft cap can freely rotate relative to the cap seat when being rotated in the negative direction, and meanwhile, a linear thread groove is formed in the top end of the anti-theft cap to confuse a thief, so that the anti-theft function is realized;

in addition, the top end of the screw is rotatably provided with the fixing plate through the bearing, and the fixing plate is fixedly connected with the bottom end of the anti-theft cover through the fastening screw, so that the anti-theft cover is rotatably connected with the cap base.

In addition, the side wall of the anti-theft cap is in threaded connection with the connecting column through the fixing hole, the cap base is provided with the connecting groove matched with the connecting column in position, the outer end of the connecting column is provided with the screwing head, the screwing head is provided with the special-shaped screwing hole, when a worker needs to unscrew the screw, a screwing piece corresponding to the special-shaped screwing hole outside is aligned with the special-shaped screwing hole and screwed, so that the screwing head rotates, the connecting column is driven to rotate in the fixing hole through the screwing head, the connecting column moves inwards relative to the cap base through the threaded connection relationship between the connecting column and the fixing hole, the connecting column extends into the connecting groove, at the moment, the anti-theft cap is screwed, the connecting column is driven to rotate by the anti-theft cap, when the anti-theft cap rotates to a proper position, the side wall of the connecting groove can block the connecting column, so that the connecting column drives the cap base to rotate together to realize the outward screwing of the screw, thereby realizing the disassembly of the screw.

The utility model has simple structure, convenient operation, convenient use and strong anti-theft performance.

Drawings

FIG. 1 is a schematic view of the overall construction of an anti-theft fastener of the present invention;

FIG. 2 is a schematic structural view of the integral structure of the present invention in an exploded state between the cap and the cap holder;

FIG. 3 is a cross-sectional view of the overall construction of the present invention;

FIG. 4 is a schematic view of the connection between the anti-theft cover and the ratchet and pawl of the present invention;

fig. 5 is an exploded view of the connection structure between the pawl, the torsion spring and the fixing post of the present invention.

In the figure: 1. a screw; 2. a cap base; 3. fixing a column; 4. a rotating ring; 5. a torsion spring; 6. a pawl; 7. An anti-theft cover; 8. a mounting cavity; 9. a ratchet wheel; 10. a bearing; 11. a fixing plate; 12. a fastening hole; 13. fastening screws; 14. a fixing hole; 15. connecting columns; 16. connecting grooves; 17. screwing the head; 18. special-shaped screwing holes; 19. a bolt slot; 20. a positioning ring; 21. positioning the sliding block; 22. and a positioning chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 5, in the embodiment of the present invention:

the utility model provides an anti-theft type fastener, include screw rod 1 and the cap 2 that is located screw rod 1 top, the top of cap 2 is provided with fixed column 3, the cover is equipped with swivel becket 4 on the fixed column 3, be provided with torsional spring 5 between swivel becket 4 and the fixed column 3, the one end of torsional spring 5 is fixed with the outer wall connection of fixed column 3, the other end is fixed with the inner wall connection of swivel becket 4, be provided with pawl 6 on the swivel becket 4 lateral wall, the top outside cover of cap 2 is equipped with theftproof lid 7, the installation cavity 8 has upwards been seted up to the bottom of theftproof lid 7, ratchet 9 is installed to the interior roof of installation cavity 8, ratchet 9 and pawl 6 match, the top of screw rod 1 is provided with bearing 10, install fixed plate 11 through bearing 10 rotation, all correspond between the bottom of fixed plate 11 and theftproof lid 7 and seted up fastening hole 12, wear to be equipped with fastening screw 13 in the fastening hole 12.

Referring to fig. 2 and 3, in an embodiment of the present invention: the side wall of the cap base 2 is provided with a fixing hole 14, a connecting column 15 is arranged in the fixing hole 14 in a threaded manner, the cap base 2 is provided with an arc-shaped connecting groove 16, the connecting groove 16 corresponds to the fixing hole 14 in position, the outer end of the connecting column 15 is provided with a screwing head 17, the screwing head 17 is provided with a special-shaped screwing hole 18, when a worker needs to screw off the screw 1, a screwing piece corresponding to the special-shaped screwing hole 18 outside is aligned with the special-shaped screwing hole 18 and screwed, so that the screwing head 17 rotates, the connecting column 15 is driven to rotate in the fixing hole 14 through the screwing head 17, the connecting column 15 moves inwards relative to the cap base 2 through the threaded connection relationship between the connecting column 15 and the fixing hole 14, the connecting column 15 extends into the connecting groove 16, at the moment, the anti-theft cover 7 is screwed, the connecting column 15 is driven to rotate by the anti-theft cover 7, and when the connecting column 15 rotates to a proper position, the connecting column 15 is blocked by the side wall of the connecting groove 16, thereby realize spliced pole 15 and drive cap 2 and rotate together, realize the outside of screw rod 1 and revolve soon, spliced pole 15 sets up two at least around cap 2 week, and connecting groove 16 quantity and position correspond with spliced pole 15, increase the area of contact between spliced pole 15 and the connecting groove 16 and the position of mutual production effort, increase the connection stability when the screw rod 1 revolves soon outwards.

Referring to fig. 2 and 4, in an embodiment of the present invention: the number of the fixing columns 3 is three, the fixing columns are evenly distributed on the top end of the cap base 2 in an annular mode, the number of the pawls 6 corresponds to that of the fixing columns 3, stress points between the pawls 6 and the ratchet wheel 9 are increased when the screw rod 1 is screwed inwards by increasing the number of the pawls 6, the anti-theft cover 7 drives the cap base 2 to rotate through the matching of the ratchet wheel 9 and the pawls 6, the screw rod 1 is driven to rotate through the cap base 2, and the screw rod 1 is screwed inwards.

Referring to fig. 2, in an embodiment of the present invention: the cross-section hexagon of shield 7, and the bolt groove 19 of a style of calligraphy is seted up on the top of shield 7, show the bolt groove 19 of a style of calligraphy in the outside, the thief can first select to adopt a word screwdriver to twist the helmet seat like this, when the shield 7 is twisted to the mode of reverse twisting of adoption conventional fastener, because the mating reaction of ratchet 9 and pawl 6, shield 7 can be free for 2 antiport of helmet seat, thereby can not drive the helmet seat 2 and rotate, the connection of screw rod 1 is not influenced, the bolt groove 19 of a style of calligraphy, mainly be used for puzzleing away the anti-thief.

Referring to fig. 2 and 3, in an embodiment of the present invention: be provided with holding ring 20 on the inner wall of installation cavity 8, the bottom of holding ring 20 is provided with location slider 21, annular location spout 22 has been seted up on the top of cap seat 2, location slider 21 slides in location spout 22, setting through holding ring 20, will fix a position slider 21 and put into location spout 22, can realize the location between anti-theft cover 7 and the cap seat 2 fast, be convenient for anti-theft cover 7 and fixed plate 11 be connected, location spout 22 and location slider 21's setting, further improve the convenience and the accurate nature of installation.

Example 2:

referring to fig. 1-5, on the basis of embodiment 1, the utility model relates to an anti-theft type fastener, when in use, a screw 1 is aligned with a threaded hole of an external structure to be fixed, an anti-theft cover 7 is screwed by a straight screwdriver or a wrench, the anti-theft cover 7 drives a ratchet wheel 9 to rotate, under the action of a pawl 6, a cap base 2 is driven by the anti-theft cover 7 to rotate, so that the screw 1 is driven by the cap base 2 to rotate, and the screw 1 is matched with an external threaded hole to realize connection and fixation, when a thief wants to unscrew the screw 1, the device can think that the anti-theft cap is screwed by a straight screwdriver or a wrench, but when rotating reversely, the pawl 6 can not block the ratchet wheel 9, under the action of a positioning chute 22, a positioning slide block 21 and a fixing plate 11, the anti-theft cover 7 can freely rotate relative to the cap base 2, the cap base 2 can not rotate reversely along with the anti-theft cover 7, so that the connection of the screw rod 1 is not affected, and the anti-theft function is realized.

Example 3:

referring to fig. 1 to 3, on the basis of embodiment 2, the utility model relates to an anti-theft fastener, which includes a screw rod 1, a cap base 2, an anti-theft cover 7 and a fixing plate 11, wherein the fixing plate 11 is rotatably connected with the screw rod 1 through a bearing 10, and the bottom end of the anti-theft cover 7 is fixedly connected with the fixing plate 11 through a fastening screw 13, so that the anti-theft cover 7 can be rotatably connected with the cap base 2, meanwhile, a positioning ring 20 is arranged on the inner wall of an installation cavity 8 of the anti-theft cover 7, a positioning slider 21 is arranged at the bottom end of the positioning ring 20, and a positioning chute 22 matched with the positioning slider 21 is arranged at the top end of the cap base 2, so that the stability of the anti-theft cover 7 in rotation with the cap base 2 is enhanced, meanwhile, the anti-theft cover 7 is conveniently and quickly positioned during installation, and the installation convenience is improved.

Example 4:

referring to fig. 2 and 3, on the basis of embodiment 3, the sidewall of the anti-theft cap of the present invention is connected with a connection post 15 through a fixing hole 14 by a screw thread, and a connection groove 16 matching with the connection post 15 is formed on the cap base 2, and a screwing head 17 is provided at the outer end of the connection post 15, and a special screwing hole 18 is formed on the screwing head 17, when a worker needs to screw off the screw 1, a screwing member corresponding to the special screwing hole 18 from the outside is aligned with the special screwing hole 18 and screwed, so that the screwing head 17 rotates, the connection post 15 is driven to rotate in the fixing hole 14 by the screwing head 17, the connection post 15 moves inward relative to the cap base 2 through the screw connection between the connection post 15 and the fixing hole 14, so that the connection post 15 extends into the connection groove 16, at this time, the anti-theft cover 7 is screwed, the anti-theft cover 7 drives the connection post 15 to rotate, and when the anti-theft cover 7 rotates to a proper position, the connecting column 15 can be blocked by the side wall of the connecting groove 16, so that the connecting column 15 drives the cap base 2 to rotate together, the screw rod 1 is screwed outwards, at least two connecting columns 15 are arranged around the cap base 2, the number and the positions of the connecting grooves 16 correspond to those of the connecting column 15, the contact area between the connecting column 15 and the connecting grooves 16 and the positions of mutual acting forces are increased, and the connection stability of the screw rod 1 during screwing outwards is increased.

In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, matching connection of bolt and nut, bolt or screw connection, or other known connection methods, which are not described herein, and the above-mentioned all the references relate to fixed connection, preferably welding, and the above-mentioned is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art should be within the technical scope of the present invention, and equivalent substitutions or changes according to the technical solution of the present invention and the inventive concept thereof should be covered in the protection scope of the present invention.

Claims

1. The utility model provides an anti-theft type fastener, includes screw rod (1) and cap seat (2) that are located screw rod (1) top, its characterized in that: the top end of the cap base (2) is provided with a fixed column (3), a rotating ring (4) is sleeved on the fixed column (3), a torsion spring (5) is arranged between the rotating ring (4) and the fixed column (3), one end of the torsion spring (5) is fixedly connected with the outer wall of the fixed column (3), the other end of the torsion spring is fixedly connected with the inner wall of the rotating ring (4), the outer side wall of the rotating ring (4) is provided with a pawl (6), the outer side of the top end of the cap base (2) is covered with an anti-theft cover (7), the bottom end of the anti-theft cover (7) is upwards provided with an installation cavity (8), the inner top wall of the installation cavity (8) is provided with a ratchet wheel (9), the ratchet wheel (9) is matched with the pawl (6), the top end of the screw rod (1) is provided with a bearing (10), a fixed plate (11) is rotatably installed through the bearing (10), and fastening holes (12) are correspondingly formed between the fixed plate (11) and the bottom end of the anti-theft cover (7), and a fastening screw (13) penetrates through the fastening hole (12).

2. An anti-theft fastener according to claim 1, characterized in that: the novel cap is characterized in that a fixing hole (14) is formed in the side wall of the cap base (2), a connecting column (15) is arranged in the fixing hole (14) in a threaded mode, an arc-shaped connecting groove (16) is formed in the cap base (2), and the connecting groove (16) corresponds to the fixing hole (14).

3. An anti-theft fastener according to claim 2, wherein: the outer end of the connecting column (15) is provided with a screwing head (17), and the screwing head (17) is provided with a special-shaped screwing hole (18).

4. An anti-theft fastener according to claim 2, wherein: the connecting columns (15) are arranged at least two times around the cap base (2), and the number and the positions of the connecting grooves (16) correspond to those of the connecting columns (15).

5. An anti-theft fastener according to claim 1, wherein: the three fixing columns (3) are uniformly distributed on the top end of the cap base (2) in an annular mode, and the number of the pawls (6) corresponds to that of the fixing columns (3).

6. An anti-theft fastener according to claim 1, wherein: the section of the anti-theft cover (7) is hexagonal, and the top end of the anti-theft cover (7) is provided with a straight bolt groove (19).

7. An anti-theft fastener according to claim 1, wherein: be provided with holding ring (20) on the inner wall of installation cavity (8), the bottom of holding ring (20) is provided with location slider (21), annular location spout (22) have been seted up on the top of cap seat (2), location slider (21) slides in location spout (22).