CN109340238B

CN109340238B - Antitheft bolt

Info

Publication number: CN109340238B
Application number: CN201811495018.8A
Authority: CN
Inventors: 李永超; 高永强
Original assignee: Zhejiang Shengshi Ruijin Fastener Co ltd
Current assignee: Zhejiang Shengshi Ruijin Fastener Co ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2024-05-07
Anticipated expiration: 2038-12-07
Also published as: CN109340238A

Abstract

The invention discloses an anti-theft bolt which comprises a bolt body, a pressing body, a screwing cap, an anti-falling mechanism, a first clamping groove, annular protrusions, a plurality of notches, a plugging groove, a second clamping groove, a main body and a plurality of protrusions, wherein the pressing body is arranged at the rear end of the bolt body, the main body is arranged at the rear end of the pressing body, the annular protrusions are arranged on the main body, evenly distributed notches are arranged on the peripheral surface of the annular protrusions, the screwing cap is sleeved on the annular protrusions, a protrusion is arranged in each notch on the inner wall of the screwing cap, and the plugging groove for the front end of the screwing cap to be plugged in is arranged at the rear end of the pressing body.

Description

Antitheft bolt

[ Field of technology ]

The invention relates to the technical field of fasteners, in particular to the technical field of anti-theft bolts.

[ Background Art ]

The conventional bolt is disassembled by a conventional tool due to the standard shape, but some special assembly and installation conditions are met, locking is needed after assembly, and random disassembly is not allowed, so that the conventional bolt cannot be utilized due to convenient disassembly.

[ Invention ]

The invention aims to solve the problems in the prior art, and provides an anti-theft bolt which can effectively prevent the bolt from being disassembled by others at will and has a simple structure.

In order to achieve the above purpose, the invention provides an anti-theft bolt, which comprises a screw body, a pressing body, a screwing cap, an anti-falling mechanism, a first clamping groove, annular protrusions, a plurality of notches, a plugging groove, a second clamping groove, a main body and a plurality of protrusions, wherein the pressing body is arranged at the rear end of the screw body, the main body is arranged at the rear end of the pressing body, the annular protrusions are arranged on the main body, evenly distributed notches are arranged on the peripheral surface of the annular protrusions, the screwing cap is sleeved on the annular protrusions, a protrusion is arranged in each notch on the inner wall of the screwing cap, the plugging groove for the front end of the screwing cap to be plugged in is arranged at the rear end of the pressing body, the first clamping groove and the second clamping groove positioned in front of the first clamping groove are arranged on the inner wall at the rear end of the screwing cap, and the anti-falling mechanism which is in plug-connection with the second clamping groove is arranged at the rear end of the main body.

Preferably, the screwing cap is a cylindrical sleeve body with a screwing part arranged on the peripheral surface of the rear end and the rear end is closed, and the cross section of the outer wall of the screwing part is in a regular polygon shape.

Preferably, the outer diameter of the screwing cap is equal to the outer diameter of the insertion groove.

Preferably, the anti-disengaging mechanism comprises a spring body and an inserting body, a groove for accommodating the spring body and the inserting body is formed in the main body, the inserting body is arranged at the upper end of the spring body, the upper end of the inserting body extends out of the upper end of the groove and is inserted into the second clamping groove, the upper end of the inserting body is a slope inclined leftwards, and the lowest end of the slope is located outside the second clamping groove.

Preferably, the first clamping groove and the second clamping groove are annular grooves, and the front ends of the first clamping groove and the second clamping groove are vertical planes.

Preferably, a screwing groove is formed in the rear end of the screwing cap, and the cross section of the screwing groove is regular polygon.

The invention has the beneficial effects that: according to the invention, when the screw cap is rotated through the cooperation of the notch and the bulge, the main body is driven to rotate through the annular bulge, the main body drives the screw body to rotate through the pressing body, after the screw cap is screwed, the screw cap is pushed forward, the screw cap drives the bulge to move forward until the plug body is inserted into the first clamping groove, at the moment, the bulge is completely removed from the notch, and when the screw cap is rotated, only the bulge is driven to idle, so that the screw cap can be effectively prevented from being randomly disassembled by other people.

The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.

[ Description of the drawings ]

FIG. 1 is a schematic cross-sectional view of an antitheft bolt of the present invention;

Fig. 2 is a partial side view of an antitheft bolt of the invention.

In the figure: the novel screw comprises a 1-screw body, a 2-pressing body, a 3-screwing cap, a 4-anti-falling mechanism, a 5-first clamping groove, a 6-annular protrusion, a 7-notch, an 8-inserting groove, a 9-second clamping groove, a 10-main body, a 11-protrusion, a 12-screwing part, a 13-groove, a 14-screwing groove, a 41-spring body and a 42-inserting body.

[ Detailed description ] of the invention

Referring to fig. 1 and 2, the anti-theft bolt comprises a screw body 1, a pressing body 2, a screwing cap 3, an anti-falling mechanism 4, a first clamping groove 5, annular protrusions 6, a plurality of notches 7, a plugging groove 8, a second clamping groove 9, a main body 10 and a plurality of protrusions 11, wherein the pressing body 2 is arranged at the rear end of the screw body 1, the main body 10 is arranged at the rear end of the pressing body 2, the annular protrusions 6 are arranged on the main body 10, uniformly distributed notches 7 are arranged on the circumferential surface of the annular protrusions 6, the screwing cap 3 is sleeved on the annular protrusions 6, a protrusion 11 is arranged in each notch 7 on the inner wall of the screwing cap 3, the plugging groove 8 for the front end of the screwing cap 3 to be plugged in is arranged at the rear end of the pressing body 2, the first clamping groove 5 and the second clamping groove 9 positioned in front of the first clamping groove 5 are arranged on the inner wall at the rear part of the screwing cap 3, the anti-falling mechanism 4 in plug-in connection with the second clamping groove 9 is arranged at the rear part of the main body 10, the screwing cap 3 is a cylindrical sleeve body with a screwing part 12 arranged on the peripheral surface of the rear end and a closed rear end, the cross section of the outer wall of the screwing part 12 is in a regular polygon shape, the outer diameter of the screwing cap 3 is equal to the outer diameter of the inserting groove 8, the anti-disengaging mechanism 4 comprises a spring body 41 and an inserting body 42, a groove 13 for accommodating the spring body 41 and the inserting body 42 is arranged on the main body 10, the inserting body 42 is arranged at the upper end of the spring body 41, the upper end of the inserting body 42 extends out of the upper end of the groove 13 and is inserted into the second clamping groove 9, the upper end of the inserting body 42 is an inclined plane inclined leftwards, the lowest end of the inclined plane is positioned outside the second clamping groove 9, the first clamping groove 5 and the second clamping groove 9 are annular grooves, the front ends of the first clamping groove 5 and the second clamping groove 9 are vertical planes, the rear end of the screwing cap 3 is provided with a screwing groove 14, the cross section of the screwing groove 14 is regular polygon.

The working process of the invention comprises the following steps:

According to the anti-theft bolt, in the working process, the screwing cap 3 is rotated through a spanner, the screwing cap 3 drives the annular protrusion 6 to rotate through the cooperation of the notch 7 and the protrusion 11, the annular protrusion 6 drives the pressing body 2 to rotate through the main body 10, the pressing body 2 drives the screw body 1 to rotate, after screwing is completed, the screwing cap 3 is pushed forward, the screwing cap 3 drives the protrusion 11 to move forward, meanwhile, the inner wall of the screwing cap 3 compresses the inserting body 42 and slides out of the second clamping groove 9, when the rear end of the main body 10 is abutted against the rear end of the screwing cap 3, the inserting body 42 is inserted into the first clamping groove 5 under the action of the spring body 41, the protrusion 11 is completely removed from the notch 7, and when the screwing cap 3 is rotated, the protrusion 11 can only be driven to idle.

The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.

Claims

1. An antitheft bolt, characterized in that: including the body of screw (1), compress tightly body (2), twist cap (3), anticreep mechanism (4), first draw-in groove (5), annular bulge (6), a plurality of breach (7), jack groove (8), second draw-in groove (9), main part (10) and a plurality of protruding (11), the rear end of body of screw (1) is equipped with compresses tightly body (2), the rear end that compresses tightly body (2) is equipped with main part (10), be equipped with annular bulge (6) on main part (10), be equipped with evenly distributed breach (7) on the global of annular bulge (6), twist cap (3) cover is established on annular bulge (6), the inner wall of twist cap (3) is equipped with a arch (11) in every breach (7), the rear end of body of compressing tightly (2) is equipped with jack groove (8) that can screw the front end male of cap (3), be equipped with first draw-in groove (5) and be located the second draw-in groove (9) of first draw-in groove (5) the front of the rear portion inner wall, twist cap (3) is equipped with the second periphery (9) that the end of twist cap (3) is equipped with the end of screwing up, the end of screwing up cap (4) is equipped with the end of screwing up, the outer wall cross section of twisting portion (12) is regular polygon shape, twist the external diameter of cap (3) and the external diameter of grafting groove (8) equal, anticreep mechanism (4) are including spring body (41) and grafting body (42), be equipped with recess (13) that hold spring body (41) and grafting body (42) on main part (10), the upper end of spring body (41) is equipped with grafting body (42), the upper end of grafting body (42) stretches out the upper end of recess (13) and inserts in second draw-in groove (9), the upper end of grafting body (42) is the inclined plane of slope left, and the minimum on inclined plane is located outside second draw-in groove (9), first draw-in groove (5) and second draw-in groove (9) are annular groove, the front end of first draw-in groove (5) and second draw-in groove (9) are vertical plane.

2. An anti-theft bolt according to claim 1, wherein: the rear end of the screwing cap (3) is provided with a screwing groove (14), and the cross section of the screwing groove (14) is regular polygon.