Locking anti-theft bolt

Abstract

The utility model provides a locking anti-theft bolt, which belongs to the technical field of bolts and comprises a bolt rod and a bolt head. The bolt head is of a circular structure, and an inner rotating connecting groove is formed in the top face of the bolt head. The bolt rod is slidably sleeved with a locking threaded sleeve. A locking nut capable of being matched with the locking thread sleeve is arranged on one side of the bolt head. According to the utility model, the bolt rod is sleeved with the locking screw sleeve and is matched with the locking nut; a first locking gear ring is arranged in the locking threaded sleeve, a second locking gear ring matched with the first locking gear ring is arranged on the locking nut, when the bolt is fixed, the locking nut is rotated to be in threaded connection with the locking threaded sleeve, and the second locking gear ring gradually gets close to the first locking gear ring in the connecting process till the second locking gear ring is completely attached to the first locking gear ring. Due to the fact that the elastic piece is arranged at the bottom of the first locking gear ring, the first locking gear ring can be jacked upwards, the locking nut can only rotate in one direction in cooperation with the second locking gear ring, self-locking is achieved, and the anti-theft purpose is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, concretely relates to a locking theftproof bolt. BACKGROUND

[0002] Bolt is a kind of mechanical parts, by head and screw rod two parts consisting of a kind of fastener, need to cooperate with nut, for fastening connection two parts with through hole, this connection form is called bolt connection.Bolt is detachable connection, because nut is spun down from bolt, and the two parts can be separated again, so bolt connection is detachable connection, which means that everyone can disassemble bolt, and it is extremely unsafe for some articles that need to be prevented from being stolen.Therefore, the utility model provides a locking theftproof bolt. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a locking theftproof bolt.

[0004] To solve the above technical problem, the utility model aims at realizing as follows:

[0005] A locking theftproof bolt, comprising: bolt body;The bolt body includes bolt rod and bolt head;The surface of the bolt rod is provided with thread;The bolt head is fixed at the end of the bolt rod, and the top surface is concave downward to form an internal rotary connection groove;

[0006] A locking sleeve is slidably sleeved on the bolt rod;The locking sleeve is a regular polygonal prism structure, and the top surface is concave downward to form a matching groove for accommodating the bolt head;The matching groove is circular, and the diameter is greater than the diameter of the bolt head;The top surface of the locking sleeve is provided with a connecting part;The connecting part is a circular ring column structure, the inner diameter is the same as the diameter of the matching groove, and the outer wall is provided with thread;

[0007] The top surface of the locking sleeve is concave downward to form a containing groove;The containing groove is a circular ring, concentrically arranged with the connecting part, and the inner diameter is greater than the outer diameter of the connecting part;The containing groove is internally provided with a first locking tooth ring and an elastic member;The first locking tooth ring is liftable, and the top is provided with a first triangular tooth;The bottom is connected with the top of the elastic member;One side of the first triangular tooth is parallel to the axis of the bolt rod;

[0008] One side of the bolt head is provided with a locking nut;The locking nut is a regular polygonal prism structure, and the bottom surface is concave upward to form a connecting groove;The inner wall of the connecting groove is provided with thread, which can be threadedly connected with the connecting part;

[0009] The bottom surface of the locking nut is provided with a second locking tooth ring matched with the first locking tooth ring; the second locking tooth ring is concentrically arranged with the connecting groove, and the inner diameter of the second locking tooth ring is greater than the diameter of the connecting groove; the top of the second locking tooth ring is provided with second triangular teeth matched with the first triangular teeth.

[0010] As a preferred scheme of the above scheme, the locking nut is a regular hexagonal prism structure.

[0011] As a preferred scheme of the above scheme, the locking nut is a regular hexagonal prism structure, and the size of the locking nut is the same as that of the locking nut.

[0012] As a preferred scheme of the above scheme, the first locking tooth ring does not exceed the top surface of the locking nut.

[0013] As a preferred scheme of the above scheme, the inner rotating connecting groove is an inner hexagonal groove.

[0014] As a preferred scheme of the above scheme, the outer circumferential surface and / or the inner circumferential surface of the first locking tooth ring is provided with a limiting protrusion; the limiting protrusion is slidably matched in a sliding groove arranged on the locking nut.

[0015] The utility model discloses a bolt body structure, which comprises a bolt body, a locking nut and a locking nut sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is another structural schematic diagram of the utility model from another angle.

[0018] Figure 3 It is a structural schematic diagram of the bolt body of the utility model.

[0019] Figure 4 It is a structural schematic diagram of the locking nut sleeve of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the locking nut sleeve of the utility model after being cut open.

[0021] Figure 6 The utility model discloses a locking nut structure schematic diagram.

[0022] In the drawing: 1, bolt rod, 2, bolt head, 3, locking sleeve, 4, first locking tooth ring, 5, elastic piece, 6, locking nut, 7, connecting groove, 8, second locking tooth ring, 10, limiting protrusion, 11, connecting part, 12, accommodating groove, 13, inner rotary connecting groove. DETAILED DESCRIPTION

[0023] The utility model is further explained below in connection with the drawings and specific embodiment.

[0024] As Figure 1 And Figure 2 The utility model discloses a locking anti-theft bolt, it includes: bolt body, bolt body includes bolt rod 1 and bolt head 2, bolt rod 1 surface is provided with thread, bolt head 2 is fixed at bolt rod 1 end, and it is circular structure, and the top surface is concave downward and forms inner rotary connecting groove 13, to cooperate with the tool rotation bolt body. Preferably, as Figure 3 It is shown in the drawing that the inner rotary connecting groove 13 is a hexagonal groove.

[0025] Bolt rod 1 is slidably sleeved with locking sleeve 3. As Figure 4 And Figure 5 It is shown in the drawing that the locking sleeve 3 is a regular polygonal column structure, and the top surface center is concave and forms the matching recess for accommodating bolt head 2. The matching recess is circular, and the diameter is slightly larger than the diameter of bolt head 2, and the bottom is provided with a through hole matched with bolt rod 1. Preferably, the locking sleeve 3 is a regular hexagonal column structure.

[0026] The top surface of locking sleeve 3 is provided with connecting part 11, and the connecting part 11 is a circular column structure, the inner diameter is same with the diameter of matching recess, and the outer wall is provided with thread.

[0027] At the same time, the top surface of locking sleeve 3 is concave downward and forms accommodating groove, and the accommodating groove 12 is circular, and is concentrically arranged with connecting part 11, and the inner diameter is greater than the outer diameter of connecting part 11. The accommodating groove 12 is internally provided with first locking tooth ring 4 and elastic piece 5. Wherein, the first locking tooth ring 4 can be lifted and slid, and the top is provided with first triangular tooth, and the bottom is connected with the top of elastic piece 5. One side of first triangular tooth is parallel with the axis of bolt rod 1. Preferably, the first locking tooth ring 4 does not exceed the top surface of locking sleeve 3. The elastic piece 5 is located at the bottom of accommodating groove 12, and when the first locking tooth ring 4 extrudes elastic piece 5, it will be subjected to the reverse force of elastic piece 5. The elastic piece 5 can be of rubber material.

[0028] Specifically, the outer circumferential surface and the inner circumferential surface of the first locking tooth ring 4 are provided with a plurality of limiting protrusions 10 uniformly distributed along the circumference, and the limiting protrusions 10 are slidably matched in the sliding grooves provided on the locking sleeve 3. The limiting protrusions 10 enable the first locking tooth ring 4 to only be lifted and slid, and cannot be rotated, thereby improving the stability of the cooperation.

[0029] The bolt head 2 is provided with a locking nut 6 on one side, as shown in the figure, the locking nut 6 is a regular polygonal column structure, and the bottom surface is concave upward to form a connecting groove 7. The inner wall of the connecting groove 7 is provided with a thread, which can be threadedly matched with the connecting part 11 to realize the fixed connection of the locking sleeve 3 and the locking nut 6. Preferably, the locking nut 6 is a regular hexagonal column structure, and the size is the same as that of the locking sleeve 3. Figure 6

[0030] At the same time, the bottom surface of the locking nut 6 is provided with a second locking tooth ring 8 matched with the first locking tooth ring 4, the second locking tooth ring 8 is concentrically arranged with the connecting groove 7, and the inner diameter of the second locking tooth ring 8 is greater than the diameter of the connecting groove 7. The top of the second locking tooth ring 8 is provided with second triangular teeth matched with the first triangular teeth, and the second triangular teeth also have one side parallel to the axis of the bolt rod 1. When the two teeth are tightly matched, the relative rotation direction of the two can be limited due to the action of the two sides parallel to the axis of the bolt rod 1.

[0031] Working principle: when the bolt body is fixed, the locking nut 6 is locked with the locking sleeve 3, the two are gripped by a tool to rotate relative to each other, the fixed connection of the two is realized by the thread cooperation of the connecting part 11 and the connecting groove 7, when the second locking tooth ring 8 at the end surface of the locking nut 6 moves to tightly match with the first locking tooth ring 4, the elastic member 5 is extruded by the first locking tooth ring 4, so as to keep the first locking tooth ring 4 and the second locking tooth ring 8 tightly matched, at this time, the locking nut 6 is locked and can only rotate in one direction, cannot be reversed, so as to be separated from the locking sleeve 3. The combination of the locking sleeve 3 and the locking nut 6 seals the bolt head 3, and the anti-theft effect is realized.

[0032] The above describes the preferred embodiment of the present application. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the present application shall be within the protection scope determined by the claims.​

Claims

1. A locking anti-theft bolt, characterized in that: include: Bolt body; the bolt body comprises a bolt rod (1) and a bolt head (2); the surface of the bolt rod (1) is provided with a thread; the bolt head (2) is fixed to the end of the bolt rod (1), has a circular structure, and the top surface is concave downward to form an inner rotation connection groove (13); A locking screw sleeve (3) is slidably mounted on the bolt rod (1); the locking screw sleeve (3) is in the form of a regular polygonal rectangular column structure, and a top surface is concave to form a matching groove for accommodating the bolt head (2); the matching groove is circular, and its diameter is larger than that of the bolt head (2); a connecting portion (11) is provided on the top surface of the locking screw sleeve (3); the connecting portion (11) is in the form of a circular columnar structure, and its inner diameter is the same as that of the matching groove, and its outer wall is provided with a thread; The top surface of the locking screw sleeve (3) is recessed downward to form an accommodating groove (12); the accommodating groove (12) is annular, concentrically arranged with the connecting portion (11), and has an inner diameter greater than an outer diameter of the connecting portion (11); a first locking tooth ring (4) and an elastic member (5) are arranged inside the accommodating groove (12); the first locking tooth ring (4) can be raised and lowered, and a first triangular tooth is arranged on the top, and the bottom is connected to the top of the elastic member (5); one side of the first triangular tooth is parallel to the axis of the bolt rod (1); A locking nut (6) is provided on one side of the bolt head (2); the locking nut (6) is a regular polygonal rectangular column structure, and its bottom surface is recessed upward to form a connecting groove (7); the inner wall of the connecting groove (7) is provided with a thread, which can be threadedly connected with the connecting portion (11); The bottom surface of the locking nut (6) is provided with a second locking toothed ring (8) adapted to the first locking toothed ring (4); the second locking toothed ring (8) is arranged concentrically with the connecting groove (7), and its inner diameter is larger than the diameter of the connecting groove (7); the top of the second locking toothed ring (8) is provided with a second triangular tooth adapted to the first triangular tooth.

2. A locking anti-theft bolt according to claim 1, characterized in that: The locking screw sleeve (3) is a regular hexagonal rectangular column structure.

3. The locking anti-theft bolt according to claim 2, characterized in that: The locking nut (6) is a regular hexagonal rectangular column structure, and has the same size as the locking nut sleeve (3).

4. The locking anti-theft bolt according to claim 1, characterized in that: The first locking toothed ring (4) does not extend beyond the top surface of the locking nut (3).

5. The locking anti-theft bolt according to claim 1, characterized in that: The inner rotation connection groove (13) is an inner hexagonal groove.

6. The locking anti-theft bolt according to claim 1, characterized in that: The outer circumference and / or inner circumference of the first locking toothed ring (4) is provided with a limiting protrusion (10); the limiting protrusion (10) can be slidably engaged in a sliding groove provided on the locking screw sleeve (3) up and down.

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