Anti-loose gasket and bolt assembly

Abstract

The anti-loose gasket and the bolt assembly comprise an annular gasket body, the gasket body is provided with protruding thorns, the edge of the gasket body is provided with a bent limiting part extending outwards, the number of the protruding thorns is multiple, the protruding thorns are arranged in the circumferential direction of the gasket body at intervals, and the number of the bent limiting part is larger than the number of the protruding thorns. The number of the bent limiting parts is two, the two bent limiting parts are symmetrically arranged relative to the center of the gasket body, the bent limiting parts are provided with breaking grooves, and the breaking grooves are formed in the radial direction of the gasket body. The convex thorn structure can penetrate into the surface of a fixed part, and the convex thorn on the gasket body and the convex thorn on the bolt head can penetrate into the surface of the part, so that the bolt and the gasket body can be prevented from rotating, and the effect of preventing the bolt and the gasket body from loosening is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-loosening gasket and a bolt assembly. Background Art

[0002] Bolts are a commonly used mechanical part. Bolts are provided with threads for connecting threads. In order to enhance the firmness of tightening the nut, washers are generally provided. The washers increase the resistance torque in the loosening direction between the nut and the bolt.

[0003] Ordinary gaskets are mostly annular structures. The gasket forms surface contact with the nut and the fixed surface. After the nut is tightened, resistance is formed under the tightening pressure.

[0004] The loosening of nuts and bolts occurs when they rotate in a circumferential direction and are affected by vibration. Ordinary gaskets will have poor anti-loosening ability. Summary of the invention

[0005] In view of the problems pointed out in the background technology, the utility model proposes an anti-loosening gasket and a bolt assembly to improve the anti-loosening ability of the gasket.

[0006] The technical solution of the utility model is achieved in this way:

[0007] An anti-loosening gasket comprises an annular gasket body, on which protruding thorns are arranged.

[0008] The utility model is further configured that the edge of the gasket body is provided with a bending limit portion extending outward.

[0009] The utility model is further configured that the convex thorns are provided in plurality, and the plurality of convex thorns are arranged at intervals in the circumferential direction of the gasket body.

[0010] The utility model is further configured that two bending limit parts are provided, and the two bending limit parts are symmetrically arranged about the center of the gasket body.

[0011] The utility model is further configured that the bending limit portion is provided with a breaking groove, and the breaking groove is arranged along the radial direction of the gasket body.

[0012] The utility model is further configured that one end of the bending limit portion is connected to the gasket body, and the other end of the bending limit portion is tilted.

[0013] The utility model is further configured that the thickness of the gasket body is 1-3 mm.

[0014] The utility model is further configured such that the bending limit portion and the gasket body are integrally configured.

[0015] A bolt assembly comprises a bolt and a nut, wherein the bolt comprises a screw rod and a bolt head, and further comprises the above-mentioned anti-loosening gasket, wherein the anti-loosening gasket is connected to the screw rod.

[0016] The utility model is further configured that the bolt head is provided with a convex thorn protruding toward the side where the nut is located.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0018] The burr structure can penetrate into the surface of the fixed component. The burrs on the gasket body and the burrs on the bolt head can penetrate into the surface of the component, thereby preventing the bolt and the gasket body from rotating and preventing the bolt and the gasket body from loosening.

[0019] After the bending limit portion on the gasket body is bent toward the hexagonal nut, it can cooperate with the side wall of the nut, and the bent bending limit portion forms a barrier to the rotation of the nut, thereby preventing the nut from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0022] Figure 2 The utility model is shown in FIG. Figure 1 .

[0023] Figure 3 The structure of the utility model is shown in FIG. Figure 2 .

[0024] Figure 4 The utility model is shown in FIG. Figure 2 .

[0025] Figure 5 It is a cross-sectional view of the utility model.

[0026] Figure 6 The structure of the bending limiter of the utility model after bending is shown in FIG. Figure 1 .

[0027] Figure 7 The structure of the bending limiter of the utility model after bending is shown in FIG. Figure 2 .

[0028] Description of the reference numerals in the accompanying drawings: gasket body 1, thorn 2, bending limit portion 3, dividing groove 4, nut 5, screw rod 6, bolt head 7. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] For reference Figure 1-7 The utility model is described as follows:

[0031] Embodiment 1: A bolt assembly includes a bolt and a nut 5, the nut 5 is hexagonal, the bolt includes a screw rod 6 and a bolt head 7, and also includes the above-mentioned anti-loosening gasket, the anti-loosening gasket and the nut 5 are connected to the screw rod 6, and a hole connected to the screw rod 6 is provided on the fixing portion 100. The bolt head 7 is provided with a convex thorn 2 protruding toward the side where the nut 5 is located. After the nut 5 is tightened, the convex thorn 2 on the bolt head 7 penetrates into the fixing portion 100, which plays a role in limiting the loosening of the bolt.

[0032] The anti-loosening gasket comprises a circular gasket body 1, the thickness of the gasket body 1 is 1-3 mm, and the gasket body 1 is provided with protruding thorns 2, four thorns 2 are provided, and the four thorns 2 are arranged at intervals in the circumferential direction of the gasket body 1. After the nut 5 is tightened, the thorns 2 on the gasket body 1 penetrate into the fixing part 100, which plays a role in limiting the loosening of the gasket.

[0033] The edge of the gasket body 1 is provided with a bending limit portion 3 extending outward, and the bending limit portion 3 and the gasket body 1 are integrally arranged. There are two bending limit portions 3, and the two bending limit portions 3 are symmetrically arranged about the center of the gasket body 1. One end of the bending limit portion 3 is connected to the gasket body 1, and the other end of the bending limit portion 3 is tilted. When the bolt and the nut 5 are tightened, the gasket is compressed, and the bending limit portion 3 can be bent at this time, and the bending limit portion 3 is bent to a state of contact with the outer wall of the nut 5. In this way, the nut 5 will be blocked by the bending limit portion 3 when it is loose and rotated, so that the rotation of the nut 5 is limited, and the bending limit portion 3 and the gasket body 1 are blocked by the burrs 2 and cannot rotate, so that the nut 5 cannot rotate either, which plays a role in limiting the loosening of the nut 5.

[0034] The bending limiter 3 is provided with a breaking groove 4, and the breaking groove 4 is arranged along the radial direction of the gasket body 1. The hexagonal nut 5 has 6 sides, and one bending limiter 3 is bent to one side of the nut to limit the nut; it can also be that the breaking groove 4 corresponds to the middle position of the two adjacent side surfaces of the nut, so that the bending limiters 3 on both sides of the breaking groove 4 can be bent to the two adjacent side surfaces of the nut to limit the rotation of the nut, so that there is no need to consider the corresponding position of the bending limiter 3 and the nut, so that the bending limiter 3 can be bent to limit the nut at any angle position of the gasket and the nut.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-loosening gasket, comprising an annular gasket body (1), characterized in that: The gasket body (1) is provided with a protruding thorn (2); the edge of the gasket body (1) is provided with a bending limit portion (3) extending outward; the bending limit portion (3) is provided with a breaking groove (4), and the breaking groove (4) is arranged along the radial direction of the gasket body (1).

2. The anti-loosening gasket according to claim 1, characterized in that: A plurality of the ridges (2) are provided, and the plurality of ridges (2) are arranged at intervals in the circumferential direction of the gasket body (1).

3. The anti-loosening gasket according to claim 2, characterized in that: Two bending limit portions (3) are provided, and the two bending limit portions (3) are symmetrically arranged about the center of the gasket body (1).

4. The anti-loosening gasket according to claim 2, characterized in that: One end of the bending limit portion (3) is connected to the gasket body (1), and the other end of the bending limit portion (3) is tilted.

5. The anti-loosening gasket according to claim 2, characterized in that: The thickness of the gasket body (1) is 1-3 mm.

6. The anti-loosening gasket according to claim 5, characterized in that: The bending limit portion (3) and the gasket body (1) are integrally arranged.

7. A bolt assembly, comprising a bolt and a nut (5), wherein the bolt comprises a screw rod (6) and a bolt head (7), characterized in that: It also comprises an anti-loosening gasket as claimed in any one of claims 1 to 6, wherein the anti-loosening gasket is connected to the screw rod (6).

8. A bolt assembly according to claim 7, characterized in that: The bolt head (7) is provided with a thorn (2) protruding toward the side where the nut (5) is located.

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