Anti-loosening nut and gasket assembly

An anti-loosening and assembly technology, applied in nuts, threaded fasteners, screws, etc., can solve the problem of low pre-tightening force, and achieve the effect of increasing the pre-tightening force, reducing the amplitude, and prolonging the anti-loosening life.

Active Publication Date: 2022-03-04
LHASA YUZHIXIN TECH LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies of the existing technical conditions, the present invention provides a nut washer assembly with better anti-loosening effect. The present invention improves the wedge block. The height of the wedge block on the nut of the present invention is along the direction of rotation when the nut is fastened. Although the nut cannot push the washer to rotate together when tightening for the first time, the pretightening force of the nut on the washer is lower than that of the former after the tightening is completed, but when the washer vibrates and rotates around the direction of nut loosening, the thrust for the nut to loosen is small , and when the washer rotates around the nut tightening direction, it will push the nut to be further tightened, and finally achieve a better anti-loosening effect. The technical solution of the present invention is as follows:

Method used

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  • Anti-loosening nut and gasket assembly
  • Anti-loosening nut and gasket assembly
  • Anti-loosening nut and gasket assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Please refer to Figure 3-6 , image 3 It is a three-dimensional view of the overall structure of the nut washer assembly in this embodiment, Figure 4 It is a schematic diagram of the relative rotation of the nut washer assembly in this embodiment, Figure 5 It is a perspective view of the nut of the nut washer assembly in this embodiment, Figure 6 is a perspective view of the gasket of the nut washer assembly in this embodiment. An anti-loosening nut washer assembly, including a nut 1 and a washer 2, six wedge-shaped blocks are evenly arranged on the contact surface of the nut 1 and the washer 2, for the convenience of distinction, the wedge-shaped blocks on the nut 1 are called The wedge block A11, the wedge block on the gasket 2 is called the wedge block B21; the lower end surface 111 of the wedge block A of the nut 1, and the upper end surface 211 of the wedge block B of the gasket 2 are arranged oppositely and are all slopes, and the nut 1 and the When the g...

Embodiment 2

[0042] Please refer to Figure 8 , 9 , Figure 8 It is a schematic diagram of the relative rotation of the nut washer assembly in this embodiment, Figure 9 is a perspective view of the gasket of the nut washer assembly in this embodiment. The difference between this embodiment and Embodiment 1 is that in this embodiment, the lower end surface 111 of the wedge-shaped block 11 of the nut 1 and the upper end surface 211 of the wedge-shaped block B21 of the gasket 2 are both curved surfaces; the gasket 2 faces the object to be fastened 4 One side of the surface is provided with anti-skid teeth.

Embodiment 3

[0044] Please refer to Figure 10 , Figure 10 is a perspective view of the gasket of the nut washer assembly in this embodiment. The difference between this embodiment and Embodiment 2 is that the side of the gasket 2 facing the surface of the fastened object 4 is provided with anti-slip teeth.

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Abstract

The invention discloses an anti-loosening nut and gasket assembly which comprises a nut and a gasket, and wedge blocks are arranged on the contact faces of the nut and the gasket. The lower end face of the wedge-shaped block of the nut and the upper end face of the wedge-shaped block of the gasket are oppositely arranged and are inclined planes, and when the nut and the gasket rotate relatively, the lower end face of the wedge-shaped block of the nut and the upper end face of the wedge-shaped block of the gasket slide relatively and then are in staggered pressing contact, so that the height of a nut and gasket combination is changed; and the heights of at least one part of the wedge blocks on the nut are sequentially reduced, so that the gasket can slide relative to the nut when the gasket reversely rotates around the fastening direction of the nut. When the gasket rotates reversely, the component force for pushing the nut to loosen is small, the loosening possibility of a fastener is reduced, and the anti-loosening service life is longer.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to an anti-loosening nut washer assembly. Background technique [0002] Nuts and washers are commonly used fasteners, and they are usually used together. Under high-frequency, large-scale vibration or impact conditions, the nut usually rotates relative to the bolt, causing the object to be fastened to loosen and shift, that is, the fastening failure . For this reason, people have been studying anti-loosening fasteners, and one of the research directions is to use wedge-shaped block structures to form self-locking to achieve the purpose of anti-loosening. At present, there are many such products. [0003] Chinese patent application CN200510020909.4 discloses a high fastening nut washer assembly. The product connects the nut and the washer through the self-locking structure of the wedge block. When the two rotate relative to each other, tension will be formed to prevent the relativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/282F16B39/24
CPCF16B39/282F16B39/24
Inventor 李琪余磊冯云昊
Owner LHASA YUZHIXIN TECH LTD CO
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