CN214404279U

CN214404279U - Anti-theft bolt

Info

Publication number: CN214404279U
Application number: CN202023244282.XU
Authority: CN
Inventors: 陈承达
Original assignee: Shaoxing Shangyu Huatong Screws Co ltd
Current assignee: Shaoxing Shangyu Huatong Screws Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-10-15
Anticipated expiration: 2030-12-29

Abstract

The utility model belongs to the technical field of the fastener, especially, be an anti-theft bolt, including the bolt head, the bottom fixedly connected with double-screw bolt of bolt head, the external screw thread has been seted up on the surface of double-screw bolt, the top of bolt head is seted up flutedly, the bottom swing joint of recess has the gland, the guide slot has been seted up to the bottom of gland, the fixed slot has been seted up to the bottom of guide slot, one side fixedly connected with spring of fixed slot, one side fixedly connected with fixture block of spring, the top fixedly connected with rodent of fixture block, the bottom fixedly connected with slider of fixture block. The utility model discloses a set up fixture block, draw-in groove, spring and rodent, can lock the bolt, must use specific instrument just can install or dismantle, and mode such as ordinary spanner can't carry out the dismouting, in some special work pieces, can keep the bolt stable connection, effectively prevents to steal, satisfies the operation requirement.

Description

Anti-theft bolt

Technical Field

The utility model relates to a fastener technical field specifically is a theftproof bolt.

Background

A bolt is a mechanical part, and a cylindrical threaded fastener matched with a nut. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection, hexagonal head connection, round head connection, square head connection, countersunk connection and the like. With a hex head being the most common. The countersunk head is typically used where a smooth, non-protruding surface is desired after the connection, as the countersunk head can be screwed into the part. The round head can also be screwed into the part. The tightening force of the square head may be larger, but the size is large. In addition, in order to meet the requirement of locking after installation, the head part is provided with a hole, the rod part is provided with a hole, the holes can prevent the bolt from loosening when the bolt is vibrated, and a polished rod without threads of the bolt is thinned, so that the polished rod is called a thin waist bolt. The bolt is beneficial to the connection of variable force, a special high-strength bolt is arranged on a steel structure, the head part can be made larger, and the size can be changed. There are also special uses: the T-shaped groove bolt is used on a machine tool clamp, the T-shaped groove bolt is most used on the machine tool clamp, the shape is special, two sides of the head of the T-shaped groove bolt are cut off, and the anchor bolt is used for connecting and fixing a machine and the ground and has various shapes. U-bolts, as previously described. And the like, a special stud for welding is provided, one end of the stud is provided with a thread, the other end of the stud is not provided with the thread, the stud can be welded on a part, and the other end of the stud is directly screwed with a nut.

There are the following problems:

1. the existing bolt generally only comprises a screw rod and a nut, can be detached only by using a traditional tool, is easy to steal in special places such as iron towers, railway tracks and the like, has great potential safety hazards and has great defects

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a theftproof bolt has solved the problem of easily stealing.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an anti-theft bolt, includes the bolt head, the bottom fixedly connected with double-screw bolt of bolt head, the external screw thread has been seted up on the surface of double-screw bolt, the top of bolt head is seted up flutedly, the bottom swing joint of recess has the gland, the guide slot has been seted up to the bottom of gland, the fixed slot has been seted up to the bottom of guide slot, one side fixedly connected with spring of fixed slot, one side fixedly connected with fixture block of spring, the top fixedly connected with rodent of fixture block, the bottom fixedly connected with slider of fixture block, the surface of double-screw bolt can be dismantled and be connected with the nut, the internal thread has been seted up to the inside of nut, the draw-in groove has been seted up to one side of the inside of nut.

As an optimal technical scheme of the utility model, the external diameter size of double-screw bolt and the internal diameter size phase-match of nut, external screw thread and internal thread phase-match

As a preferred technical scheme of the utility model, the spout has been seted up to the bottom of fixed slot, the external diameter of slider and the internal diameter size phase-match of spout

As an optimized technical scheme of the utility model, the external diameter of fixture block is less than the internal diameter of draw-in groove.

As a preferred technical scheme of the utility model, the rodent has a plurality of groups, and a plurality of groups rodent is straight line distribution in the top surface of fixture block.

As an optimized technical scheme of the utility model, the external diameter size of gland slightly is greater than the internal diameter size of guide slot.

Compared with the prior art, the utility model provides a theftproof bolt possesses following beneficial effect:

1. this theftproof bolt through setting up fixture block, draw-in groove, spring and rodent, can lock the bolt, must use specific instrument just can install or dismantle, and mode such as ordinary spanner can't carry out the dismouting, in some special work pieces, can keep the bolt stable connection, effectively prevents to steal, satisfies the operation requirement.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of the connection structure of the present invention;

FIG. 3 is a schematic view of the anti-theft structure of the present invention;

fig. 4 is a schematic view of the top view structure of the bolt head of the present invention.

In the figure: 1. a bolt head; 2. a stud; 3. an external thread; 4. a groove; 5. a gland; 6. a guide groove; 7. fixing grooves; 8. a spring; 9. a clamping block; 10. a rodent; 11. a slider; 12. a nut; 13. an internal thread; 14. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: the utility model provides an anti-theft bolt, including bolt head 1, bolt head 1's bottom fixedly connected with double-screw bolt 2, external screw thread 3 has been seted up on double-screw bolt 2's surface, recess 4 has been seted up at bolt head 1's top, recess 4's bottom swing joint has gland 5, guide slot 6 has been seted up to gland 5's bottom, fixed slot 7 has been seted up to guide slot 6's bottom, one side fixedly connected with spring 8 of fixed slot 7, one side fixedly connected with fixture block 9 of spring 8, fixture block 9's top fixedly connected with rodent 10, fixture block 9's bottom fixedly connected with slider 11, double-screw bolt 2's surface can be dismantled and be connected with nut 12, internal thread 13 has been seted up to nut 12's inside, draw-in groove 14 has been seted up to one side of nut 12's inside.

In the embodiment, the outer diameter of the stud 2 is matched with the inner diameter of the nut 12, and the external thread 3 is matched with the internal thread 13, so that the nut 12 is facilitated to be screwed or unscrewed on the screw rod 2 of the nut 12 through the interaction between the internal thread 13 and the external thread 3; the bottom of the fixed groove 7 is provided with a sliding groove, the outer diameter of the sliding block 11 is matched with the inner diameter of the sliding groove, so that the sliding block 11 can move along the path of the sliding groove, the clamping block 9 can extend or contract, and the nut 12 can be fixed; the outer diameter of the fixture block 9 is smaller than the inner diameter of the clamping groove 14, so that the fixture block 9 can accurately move into the clamping groove 14, and a certain error space exists; the plurality of groups of the grinding teeth 10 are linearly distributed on the top surface of the clamping block 9, so that the clamping block 9 is driven to move in the fixing groove 7 by rotating the grinding teeth 10 through a specific tool with a gear, and the anti-theft of the bolt is completed; the outer diameter of the gland 5 is slightly larger than the inner diameter of the guide groove 6, which is helpful for covering the guide groove 6 and preventing external dust from entering the guide groove 6 to form blockage and obstruct the use.

The utility model discloses a theory of operation and use flow: when using, at first use specific instrument that has a small gear to stretch into in the guide slot 6, rotation through the gear, make the removal that the rodent 10 drove fixture block 9, make its shrink in meeting fixed slot 7, then screw up nut 12 along screw rod 2, accomplish the back of screwing up at nut 12, the position of fixture block 9 just in time corresponds the region of draw-in groove 14, then withdraw specific instrument, fixture block 9 is under the effect of spring 8, stretch out double-screw bolt 2, reach in draw-in groove 14, form fixedly, make nut 12 can't be unscrewed, the effectual emergence of preventing the accident of stealing, when dismantling, stretch into the guide slot 6 once more with specific instrument, through reverse rotation, make in fixture block 9 shrink can the fixed slot 7, then just can be relaxed unscrew nut 12, can effectually avoid stealing, the factor of safety has greatly been improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-theft bolt, comprising a bolt head (1), characterized in that: the bottom of the bolt head (1) is fixedly connected with a stud (2), the surface of the stud (2) is provided with an external thread (3), the top of the bolt head (1) is provided with a groove (4), the bottom of the groove (4) is movably connected with a gland (5), the bottom of the gland (5) is provided with a guide groove (6), the bottom of the guide groove (6) is provided with a fixed groove (7), one side of the fixed groove (7) is fixedly connected with a spring (8), one side of the spring (8) is fixedly connected with a clamping block (9), the top of the clamping block (9) is fixedly connected with a grinding tooth (10), the bottom of the clamping block (9) is fixedly connected with a sliding block (11), the surface of the stud (2) is detachably connected with a nut (12), an internal thread (13) is formed in the nut (12), and a clamping groove (14) is formed in one side of the interior of the nut (12).

2. An antitheft bolt according to claim 1 wherein: the outer diameter of the stud (2) is matched with the inner diameter of the nut (12), and the external thread (3) is matched with the internal thread (13).

3. An antitheft bolt according to claim 1 wherein: the bottom of the fixed groove (7) is provided with a sliding groove, and the outer diameter of the sliding block (11) is matched with the inner diameter of the sliding groove.

4. An antitheft bolt according to claim 1 wherein: the outer diameter of the clamping block (9) is smaller than the inner diameter of the clamping groove (14).

5. An antitheft bolt according to claim 1 wherein: the plurality of groups of the rodent (10) are distributed on the top surface of the fixture block (9) in a straight line.

6. An antitheft bolt according to claim 1 wherein: the outer diameter of the gland (5) is slightly larger than the inner diameter of the guide groove (6).