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One-piece anti-loosening nut

An anti-loosening nut, an integrated technology, applied in the direction of nuts, screws, bolts, etc., can solve the problems of complex production process, poor locking effect, easy loosening, etc., achieve the effect of convenient production and processing, reliable performance, and easy loosening

Active Publication Date: 2019-03-15
金华市通用螺母厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods all need to set locking parts separately, the production process is complicated, and thus increase the management cost and production cost. At the same time, the above structures are all split structures with poor locking effect and easy loosening

Method used

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  • One-piece anti-loosening nut
  • One-piece anti-loosening nut
  • One-piece anti-loosening nut

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 1-2 As shown, the one-piece anti-loosening nut includes a nut body 1 and an annular elastic locking piece 11. The annular elastic locking piece 11 is arranged on the upper end of the nut body 1 and has an integrated structure with the nut body 1; The locking piece 11 is bent toward the threaded inner side of the nut body 1, and forms an annular channel 2 with the nut body 1; the inner diameter of the annular elastic locking piece 11 is smaller than the inner diameter of the threaded part of the nut body 1 or the annular There is a slight axial or radial misalignment between the elastic locking piece 11 and the threaded portion of the nut body 1 .

[0024] preferred, such as Figure 4 As shown, in order to prevent the annular elastic locking piece 11 from excessively bending during the bending process, a limiting step combination 12 is also provided in the annular channel 2 .

[0025] Preferably, the limiting step combination 12 is composed of more than...

Embodiment 2

[0028] The difference from Embodiment 1 is that more than one strip-shaped cutout 13 is provided on the annular elastic locking piece 11 .

Embodiment 3

[0030] The difference from Embodiment 1 is that more than one concave indentation 14 is provided on the annular elastic locking piece 11 .

[0031] During production and processing, such as image 3 As shown, in the first step, the vertical annular locking piece 11 provided on the upper end of the nut body 1 is bent inwardly, and after bending, the following Figure 5 The structure of the untapped threaded state after the one-piece locknut is formed; the second step, the thread processing is formed as follows figure 1 The three-dimensional structural entity diagram of the one-piece anti-loosening nut shown.

[0032] In order to better verify the performance of the one-piece locknut, a relevant comparative test was carried out with the locknut of the prior art structure (this test is based on the M20 locknut, attached Figure 8 The middle is to get the test data of the nut product corresponding to the present invention in the existing head technology, mainly the first tighten...

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PUM

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Abstract

The invention discloses an integrated locking nut. The integrated locking nut comprises a nut body and an annular elastic locking piece, wherein the annular elastic locking piece is arranged on the upper end of the nut body and is integrated with the nut body; the annular elastic locking piece is bent towards the inner side, on which threads are formed, of the nut body and forms an annular channel together with the nut body; and the inside diameter of the annular elastic locking piece is less than the inside diameter of the threaded part of the nut body, or the annular elastic locking piece is axially or radially staggered with the threaded part of the nut body slightly. Compared with the prior art, the annular elastic locking piece is integrated with the nut body, so that the integrated locking nut has the advantages of convenience in production and processing and reliable performance, and additionally, the problem of easiness in looseness of a split structure in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of mechanical fixing devices, and in particular relates to an integrated locknut for fixing mechanical parts or objects. Background technique [0002] Nuts and bolts are a widely used mechanical fastener. When the usual nuts and bolts cooperate to fix the mechanical parts, due to the movement or vibration of the machine, the nuts are easy to loosen and fall off for a long time due to the movement or vibration of the machine, causing the fixed parts to shift or loosen. If it is light, it will cause damage to mechanical parts, and if it is heavy, it may cause malfunction or accident. In order to solve the problem of nut loosening, people have designed many anti-loosening nuts or devices according to different application conditions and environments. The way that the end is snapped into the collar is locked by the elastic member after the bolt and the nut are matched; some adopt the form that the end of the n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B39/26
CPCF16B39/26
Inventor 俞宜洪
Owner 金华市通用螺母厂