Bolt and gasket anti-loosening structure

Abstract

The utility model discloses a bolt and washer anti-loosening structure, which comprises a bolt and a washer, the bolt comprises a head part and a connecting part, the washer is sleeved on the connecting part, the two end faces of the washer are respectively provided with a first limiting bulge and a second limiting bulge, the first limiting bulge and the second limiting bulge are respectively provided with a limiting surface, and the limiting surface is arranged on the head part. The limiting faces at the two ends of the gasket are arranged in opposite directions, and the end face, corresponding to the gasket, of the head is provided with a flange matched with the first limiting protrusion for limiting. According to the technical scheme, the connection strength of the bolt and a connected piece can be enhanced, and connection failure caused by vibration of the bolt is prevented.

Description

Technical Field

[0001] The utility model relates to a bolt and washer anti-loosening structure. Background Art

[0002] Bolts are usually used for mechanical connections. Installing gaskets between the bolts and the connected parts can increase the pre-tightening force of the bolts and ensure the stability and safety of the connection. Since bolt connections are used in a wide range of environments, in some vibrating environments, the bolts are prone to loosening due to long-term vibration, resulting in connection failure. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a bolt and washer anti-loosening structure to enhance the connection strength between the bolt and the connected part and prevent the connection from failing due to vibration of the bolt.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A bolt and washer anti-loosening structure includes a bolt and a washer. The bolt includes a head and a connecting part. The washer is sleeved on the connecting part. The two end faces of the washer are respectively provided with a first limiting protrusion and a second limiting protrusion. Limiting surfaces are provided on both the first limiting protrusion and the second limiting protrusion, and the limiting surfaces at both ends of the washer are arranged in opposite directions. The head is provided with a flange corresponding to the end face of the washer for cooperating with the first limiting protrusion for limiting.

[0005] As a further improvement of the utility model, a limiting groove for the first limiting protrusion to insert is provided at the position of the flange corresponding to the first limiting protrusion, and an abutting surface for cooperating with the limiting surface is provided in the limiting groove.

[0006] As a further improvement of the utility model, a plurality of deep strip-shaped indentations are provided on the end face of the flange corresponding to the washer.

[0007] As a further improvement of the utility model, a plurality of the first limiting protrusions and the second limiting protrusions are arranged along the circumferential direction of the washer.

[0008] As a further improvement of the utility model, inclined surfaces are provided on both the first limiting protrusion and the second limiting protrusion.

[0009] As a further improvement of the utility model, the washer is threadedly connected to the connecting part.

[0010] The beneficial effects of the utility model: Enhance the connection strength between the bolt and the connected part and prevent the connection from failing due to vibration of the bolt. Brief Description of the Drawings

[0011] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0012] Figure 2 Schematic diagram of the bolt in the embodiment of the present utility model;

[0013] Figure 3 Schematic diagram of the washer in the embodiment of the present utility model.

[0014] Reference numerals in the drawings: 1, head; 2, connecting portion; 3, washer; 4, first limiting protrusion; 5, second limiting protrusion; 6, limiting surface; 7, flange; 8, limiting groove; 9, inclined surface. Specific implementation manner

[0015] The following will further elaborate on the present utility model in conjunction with the embodiments given in the drawings.

[0016] Refer to Figures 1-3 As shown, a bolt and washer anti-loosening structure includes a bolt and a washer 3. The bolt includes a head 1 and a connecting portion 2. The washer 3 is made of spring steel and can deform and reset under a large torque for installation. The washer 3 is sleeved on the connecting portion 2. First limiting protrusions 4 and second limiting protrusions 5 are respectively provided on two end faces of the washer 3. Limiting surfaces 6 are provided on both the first limiting protrusion 4 and the second limiting protrusion 5, and the limiting surfaces 6 at both ends of the washer 3 are arranged in opposite directions. A flange 7 for cooperating with the first limiting protrusion 4 in a limiting manner is provided on the end face of the head 1 corresponding to the washer 3. In actual application of this solution, a strip-shaped indentation with a certain depth is obtained by stamping near the threaded hole of the connected part, so that the second limiting protrusion 5 cooperates with the strip-shaped indentation after installation. When the bolt rotates due to vibration, the rotational force is transmitted to the second limiting protrusion 5 through the cooperation between the flange 7 and the first limiting protrusion 4. The second limiting protrusion 5 forms a limit through the cooperation between the limiting surface 6 and the strip-shaped indentation, preventing the connection from failing due to vibration of the bolt.

[0017] A limiting groove 8 for the first limiting protrusion 4 to insert is provided at the position of the flange 7 corresponding to the first limiting protrusion 4, and an abutting surface for cooperating with the limiting surface 6 is provided in the limiting groove 8. By providing the limiting groove 8 on the flange 7, the contact surface with the first limiting protrusion 4 is increased, making the transmitted force more stable and not easily disengaging from the cooperation. In another embodiment, in the case of frequent disassembly, several strip-shaped indentations with a certain depth can be stamped on the end face of the flange 7 corresponding to the washer 3. Such a setting facilitates quick disassembly and installation. A plurality of the first limiting protrusions 4 and the second limiting protrusions 5 are arranged along the circumferential direction of the washer 3. Arranging a circle of the first limiting protrusions 4 and the second limiting protrusions 5 is convenient for improving the anti-loosening strength and increasing multiple limiting points. Inclined surfaces are provided on both the first limiting protrusion 4 and the second limiting protrusion 5. The inclined surfaces are provided to facilitate the deformation of the top of the limiting surface 6 for installation and disassembly. To further improve the connection strength of the washer 3, the washer 3 is threadedly connected to the connecting portion 2.

[0018] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A bolt and washer anti-loosening structure, characterized in that: It includes a bolt and a washer, the bolt includes a head and a connecting part, the washer is sleeved on the connecting part, the two end faces of the washer are respectively provided with a first limiting protrusion and a second limiting protrusion, the first limiting protrusion and the second limiting protrusion are both provided with limiting surfaces, and the limiting surfaces at both ends of the washer are arranged in opposite directions, and the end face of the head corresponding to the washer is provided with a flange that cooperates with the first limiting protrusion to limit the position.

2. The bolt and washer anti-loosening structure according to claim 1, characterized in that: The flange is provided with a limiting groove for inserting the first limiting protrusion at a position corresponding to the first limiting protrusion, and a contact surface cooperating with the limiting surface is provided in the limiting groove.

3. The bolt and washer anti-loosening structure according to claim 1, characterized in that: The end surface of the flange corresponding to the gasket is provided with a plurality of strip-shaped indentations with depth.

4. The bolt and washer anti-loosening structure according to claim 2 or 3, characterized in that: A plurality of the first limiting protrusions and the second limiting protrusions are arranged along the circumference of the gasket.

5. The bolt and washer anti-loosening structure according to claim 4, characterized in that: The first limiting protrusion and the second limiting protrusion are both provided with inclined surfaces.

6. The bolt and washer anti-loosening structure according to claim 5, characterized in that: The washer is threadedly connected to the connecting portion.

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