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Never-loosening fastener

A technology for fasteners and mechanical parts, which is applied in the direction of threaded fasteners, locking fasteners, connecting components, etc. It can solve the problems of loosening and falling off, self-locking is not firm, etc., and achieves small friction, not easy to wear, and structural simple effect

Pending Publication Date: 2021-01-01
梁俊锋 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above deficiencies, the present invention provides a fastener that never loosens, which solves the problem that some existing fasteners are loose and fall off due to poor self-locking under load changes, vibrations, impacts, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A fastener that never loosens, suitable for parts with thick fastening parts 8, such as Figure 1 to Figure 6As shown, its structure includes a screw body 1, a backing ring 4, a spacer 5 and an elastic clip 6. The screw 1 includes a screw rod 3 and a screw head 2 with a brim 7. The elastic clip 6 is a helical, horizontal The cross-section is a rectangular strip-shaped spiral structure, and the width of the elastic card 6 is more than twice the thickness. Since the elastic card 6 is spiral, both ends have a certain inclination angle to the direction of the two ends, and the elastic card 6 One end is bent downwards and forms a right angle as the starting end 61 , and the other end is slightly tilted up on the basis of a certain inclination angle to form an end 62 . The height of the elastic clip 6 in a relaxed state is greater than the height of the backing ring 4, and the inner diameter of the elastic clip 6 is slightly larger than the outer diameter of the backing ring ...

Embodiment 2

[0038] This preferred embodiment provides a fastener that never loosens, such as Figure 7 to Figure 8 As shown, the difference from embodiment 1 is that this embodiment 2 is suitable for parts with thin fastening parts that require nuts to cooperate. This embodiment includes screw body 1, washer 5, backing ring 4, elastic clip 6 and Nut 9, screw body 1 includes screw rod 3, wherein the structure of elastic clip 6, backing ring 4 and gasket 5 is the same as the structure of elastic clip 6, backing ring 4 and gasket 5 in embodiment 1, and nut 9 is also A brim 7 is provided, and the distance between the brim 7 of the nut 9 and the radius of the elastic card 6 is the same as that of the bottom surface of the brim 7 of the screw head 2 of the first embodiment. Groove 10, and the triangular groove 10 is not provided under the brim 7 of the screw head 2 in the second embodiment. The implementation process is similar to that of Example 1. During implementation, the gasket 5, backing...

Embodiment 3

[0040] This preferred embodiment provides a fastener that never loosens, such as Figure 9 As shown, it is suitable for the parts 8 whose fastening parts are thinner and require the cooperation of nuts. The difference from Embodiment 2 is that the screw head 2 of the screw body 1 is provided with the same triangular shape as the bottom surface of the nut 9 brim 7 under the brim 7. The groove 10, the screw rod 4 of the screw body 1 passes through the machine part 8, and the part of the screw rod 3 outer circumference on both sides of the machine part 8 is equipped with a gasket 5, a backing ring 4 and an elastic clip 6, wherein the elastic clip 6, The structures of the backing ring 4 and the washer 5 are the same as those of the elastic clamp 6 , the backing ring 4 and the washer 5 in the second embodiment. The implementation process is similar to that of Example 2. The specific implementation process is as follows: firstly bond the two gaskets 5 to both sides of the machine pa...

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Abstract

The invention discloses a never-loosening fastener, and relates to the technical field of fasteners. The problems that an existing fastening screw is unstable in self-locking and is loosened and disengaged due to the bearing load change, vibration and impact are solved. According to the main technical scheme, the never-loosening fastener comprises an elastic clamp, a gasket, a nut, a screw rod anda screw head, wherein the screw rod and the screw head are arranged on a screw body; the elastic clamp is of a spiral structure, the end, parallel to the axial direction, of the end of the elastic clamp serves as a starting end, the other end of the elastic clamp tilts to serve as a tail end, and the orientation of the tip of the tail end of the elastic clamp is consistent with the rotating direction of the screw body screwed into a machine part or the rotating direction of the nut screwed into the screw rod; the gasket is provided with a bayonet; and grooves are formed in the screw head andthe nut. In the process of fastening the machine part, the elastic clamp is extruded, the starting end of the elastic clamp is clamped in the bayonet of the gasket or clamped in the bayonet preformedin the machine part, and the tail end of the elastic clamp abuts against the interiors of the grooves of the screw head or the nut, so that a screw or the nut cannot rotate anticlockwise, the screw orthe nut cannot be loosened, and permanent fastening is achieved.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a fastener that never loosens. Background technique [0002] During the operation of industrial equipment and transportation equipment, due to load changes, vibrations, shocks, etc., as well as environmental temperature changes, the deformation of the parts causes the fastening screws or nuts to loosen or fall off, affecting the normal operation of the equipment, and even Bring accident risks, increase maintenance costs, and even cause huge economic losses. In order to solve such problems, many people have carried out research on fastening screws. For example, there is a non-loosening nut produced by Hard Lock Industry Co., Ltd. of Japan, which is effective in use, but it does not reach 100% non-loosening. After the nut is screwed on, when an eccentric pressure is applied, the thread engagement of the nut and the bolt will be biased to one side, and the force on the thread wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/26F16B39/282
CPCF16B39/26F16B39/282
Inventor 梁俊锋梁章海
Owner 梁俊锋
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