CN221278228U - Anti-loosening thread structure - Google Patents

Abstract

The utility model provides an anti-loosening thread structure which comprises a bolt, wherein the bolt consists of a screw head and a screw rod, and the screw rod is arranged in the center of one side of the screw head; the nut is provided with threads on the inner side, two clamping grooves are symmetrically formed at the bottom of the inner side of the nut, and limit grooves are formed at the tops of the two clamping grooves far away from the inner wall of one side; when the connecting and fastening process is carried out on the object, the nut and the object to be fastened are pressed together to press the backing ring, so that the backing ring is close to the nut, the clamping block moves into the clamping groove through the extrusion of the nut, the inclined surface of the clamping groove interacts with the inclined surface of the clamping block, one side of the triangular pattern of the clamping block is embedded into the thread of the screw rod, and therefore, the relative rotation between the nut and the screw rod is prevented, the effect of preventing the nut from loosening is achieved, and the thread of the screw rod is damaged due to the connecting mode, so that the connecting and fastening device is suitable for connecting parts at positions without disassembly.

Description

Anti-loosening thread structure

Technical Field

The utility model belongs to the technical field of anti-loosening threads, and particularly relates to an anti-loosening thread structure.

Background

The bolt is a general expression of a fastener, is a fastener consisting of a head part and a screw rod, needs to be matched with a nut, is in threaded connection with the screw rod and is used for fastening and connecting two parts with through holes

The connection between the nut and the screw is mainly based on the friction between the nut and the screw, and the nut is easy to loosen back due to vibration generated by the machine in the process of the machine operation, so that the connection reliability is affected, and the stability and the safety of the machine operation are further affected.

In summary, the present utility model provides a locking thread structure to solve the above-mentioned problems.

Disclosure of utility model

In order to solve the technical problems, the utility model provides a locking thread structure, which solves the problem that nuts used as fasteners in the prior art are loosened due to mechanical vibration.

An anti-loosening screw structure comprises

The bolt consists of a screw head and a screw rod, and the screw rod is arranged in the center of one side of the screw head;

The nut is provided with threads on the inner side, two clamping grooves are symmetrically formed in the bottom of the inner side of the nut, and limit grooves are formed in the tops of the inner walls of the two clamping grooves far away from one side;

The anti-loosening gasket comprises a backing ring, two clamping blocks are symmetrically arranged at the top of the backing ring at positions close to the inner ring of the backing ring, and limiting blocks are arranged on one sides, away from each other, of the two clamping blocks.

Further, the width of the clamping block is the same as that of the clamping groove, and the distance from the clamping block to the center of the backing ring is the same as that from the clamping groove to the center of the nut.

Further, two sides that the fixture block kept away from mutually and two sides that the draw-in groove kept away from mutually all slope and set up.

Furthermore, one side of the clamping block, which is close to the center of the backing ring, is in a triangular pattern.

Further, the size of the limiting block is matched with that of the limiting groove.

Compared with the prior art, the utility model has the following beneficial effects:

When the connecting and fastening process is carried out on the object, the nut and the object to be fastened are pressed together to press the backing ring, so that the backing ring is close to the nut, the clamping block moves into the clamping groove through the extrusion of the nut, the inclined surface of the clamping groove interacts with the inclined surface of the clamping block, one side of the triangular pattern of the clamping block is embedded into the thread of the screw rod, and therefore, the relative rotation between the nut and the screw rod is prevented, the effect of preventing the nut from loosening is achieved, and the thread of the screw rod is damaged due to the connecting mode, so that the connecting and fastening device is suitable for connecting parts at positions without disassembly.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of a bolt of the present utility model;

FIG. 3 is a schematic perspective view of a nut of the present utility model;

FIG. 4 is a schematic perspective view of a looseness-preventing gasket of the present utility model;

fig. 5 is a schematic plan sectional view of the present utility model.

In the figure:

1. A bolt; 101. a screw head; 102. a screw; 2. a nut; 201. a clamping groove; 202. a limit groove; 3. a locking gasket; 301. a backing ring; 302. a clamping block; 303. and a limiting block.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in FIGS. 1-5, the present utility model provides a locking screw structure comprising

A bolt 1, wherein the bolt 1 consists of a screw head 101 and a screw 102, and the screw 102 is arranged at the center of one side of the screw head 101;

The nut 2, the inboard of nut 2 is provided with the screw thread, two draw-in grooves 201 are offered to the bottom symmetry of nut 2 inboard, two draw-in grooves 201 keep away from the top of one side inner wall mutually and all offer spacing groove 202;

The anti-loosening gasket 3 comprises a backing ring 301, two clamping blocks 302 are symmetrically arranged at the top of the backing ring 301 at positions close to the inner ring of the backing ring, and limiting blocks 303 are arranged on one sides, away from each of the two clamping blocks 302.

Wherein the width of the clamping block 302 is the same as that of the clamping groove 201, the distance from the clamping block 302 to the center of the backing ring 301 is the same as that from the clamping groove 201 to the center of the nut 2, and the clamping block 302 on the backing ring 301 can be inserted into the clamping groove 201 from the bottom of the nut 2, so that the nut 2 and the anti-loose washer 3 are installed together.

Wherein, two the fixture block 302 is kept away from one side and two the one side that draw-in groove 201 kept away from all inclines to set up, after installing nut 2 and locking gasket 3 on screw rod 102, when locking gasket 3 contacted the article that needs to fasten, continue to rotate nut 2 and can make backing ring 301 and nut 2 be close to make fixture block 302 further insert in the draw-in groove 201, under the effect of inclined plane, the inner wall of draw-in groove 201 can extrude fixture block 302 and make fixture block 302 be close to screw rod 102, until fixture block 302 imbeds in the screw tooth of screw rod 102.

The side of the clamping block 302 near the center of the backing ring 301 is in a triangular pattern, so that the side of the clamping block 302 near the screw 102 is easy to be embedded into the thread of the screw 102.

The size of the limiting block 303 and the size of the limiting block 303 matched with the limiting groove 202 can slide in the limiting groove 202 after entering the limiting groove 202, and meanwhile, the limiting block 303 can organize the clamping block 302 to be separated from the clamping groove 201, so that the nut 2 and the anti-loose gasket 3 can be conveniently made into a main body, and the nut 2 can be conveniently installed.

The specific working principle is as follows:

When the novel threaded bolt is used, firstly, the threaded rod 102 on the threaded bolt 1 passes through a connecting hole on an object to be fastened, then two clamping blocks 302 on the anti-loose gasket 3 are inserted into the clamping groove 201 of the threaded rod 102, the anti-loose gasket 3 is supported by metal and has certain elasticity, after the limiting block 303 enters the clamping groove 201 along with the clamping block 302 until the clamping block 302 moves to the position of the limiting groove 202, the limiting block 303 enters the limiting groove 202 along with the rebound of the clamping block 302, so that the anti-loose gasket is mounted on the threaded rod 2, the anti-loose gasket 3 faces the direction of the threaded head 101 of the threaded rod 1, the threaded rod 2 is sleeved on the surface of the threaded rod 102, the threaded rod 2 is gradually close to the object to be fastened along with the rotation of the threaded rod 2 until the backing ring 301 is attached to the object, then the threaded rod 2 is continuously rotated, the distance between the threaded rod 2 and the backing ring 301 is gradually reduced, the clamping block 302 can further move into the clamping groove 201, the clamping block 302 can be extruded under the action of the surface and the inner wall of the inclined arrangement of the clamping block 302 and the clamping groove 201, so that one side of the clamping block 302 is embedded into the threaded rod 102, and the threaded rod 102 can be prevented from falling off from the threaded rod 102, and the threaded rod 2 is prevented from being screwed into the threaded rod 102.

The embodiments of the present utility model have been shown and described for the purpose of illustration and description, it being understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made therein by one of ordinary skill in the art without departing from the scope of the utility model.

Claims (5)

1. An anti-loosening thread structure is characterized in that: comprising

The bolt (1), the bolt (1) is composed of a screw head (101) and a screw rod (102), and the screw rod (102) is arranged in the center of one side of the screw head (101);

The nut (2) is provided with threads on the inner side of the nut (2), two clamping grooves (201) are symmetrically formed in the bottom of the inner side of the nut (2), and limit grooves (202) are formed in the tops of the inner walls of the two clamping grooves (201) away from one side;

Anti-loosening gasket (3), anti-loosening gasket includes backing ring (301), backing ring (301) top is provided with two fixture blocks (302) in the position department symmetry that is close to its inner ring, two one side that fixture block (302) kept away from mutually all is provided with stopper (303).

2. The locking thread structure as claimed in claim 1, wherein: the clamping block (302) is the same as the clamping groove (201) in width, and the distance from the clamping block (302) to the center of the backing ring (301) is the same as the distance from the clamping groove (201) to the center of the nut (2).

3. The locking thread structure as claimed in claim 1, wherein: one side of the two clamping blocks (302) away from each other and one side of the two clamping grooves (201) away from each other are obliquely arranged.

4. The locking thread structure as claimed in claim 1, wherein: one side of the clamping block (302) close to the center of the backing ring (301) is in a triangular mode.

5. The locking thread structure as claimed in claim 1, wherein: the size of the limiting block (303) is matched with that of the limiting groove (202).