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Anti-loosening bolt

A technology of anti-loosening bolts and bolts, which is applied in the field of mechanical parts, can solve the problems of increased friction torque of thread pair, complex structure, bolt loosening, etc., and achieves the effects of convenient tightening and disassembly, wide application range and fewer components

Pending Publication Date: 2020-02-07
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the number of nuts of the existing anti-loosening bolts increases, the structure is complex, and it needs to be assembled and disassembled many times, which is relatively cumbersome. possibility of loosening

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0023] Such as Figure 1~4 A lock bolt shown includes a bolt 1 and a nut 2. The bolt 1 includes a head 1.1 and a screw 1.2. The screw 1.2 is provided with a connecting thread 1a and a fixing thread 1b. The connecting piece 3 is connected by The thread 1a is threaded with the bolt 1, and the nut 2 is threaded with the bolt 1 through the fixing thread 1b. The thread direction of the connecting thread 1a is opposite to that of the fixing thread 1b. The connecting thread 1a is a right-handed thread, and the fixing thread 1b is a left-handed thread. The head 1.1 is a regular hexagonal prism. The nut 2 is also a regular hexagonal prism. The head 1.1 has the same external dimensions as the nut 2 . The inner diameter of the screw rod 1.2 of the connecting thread 1a section is larger than the outer diameter of the screw rod 1.2 of the fixed thr...

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PUM

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Abstract

The invention discloses an anti-loosening bolt. The anti-loosening bolt comprises a bolt and a nut, wherein the bolt comprises a head and a screw rod, a connecting thread and a fixing thread are arranged on the screw rod, a connecting piece is in threaded connection with the bolt through the connecting thread, and the nut is in threaded connection with the bolt through the fixing thread. The anti-loosening bolt has the advantages that the screw thread between the bolt and the connecting piece and the screw thread between the bolt and the nut are opposite in direction, the direction when the bolt is loosened is tightening with respect to the nut, the effect of mutual tightening is formed, the anti-loosening purpose of the bolt is achieved, the structure of a traditional bolt is improved, theoretically the possibility of loosening does not exist, better reliability is achieved, components are less, tightening and dismounting are more convenient, the cost is lower, and the application range is wider.

Description

technical field [0001] The invention relates to the technical field of mechanical parts, in particular to an anti-loosening bolt. Background technique [0002] Such as Figure 5 shown. At present, the anti-loosening method of threaded connection mostly adopts the double-nut anti-loosening disclosed by the invention patent of CN 109838445 A, and the three-nut anti-loosen disclosed by the invention patent of CN 109519461 A. The basic principle is multiple After the nuts are tightened against each other, the side surfaces of the threads in the threaded pair composed of multiple nuts and bolts are subjected to axial pressure in the opposite direction, thereby eliminating the axial gap between the threaded pairs, increasing the frictional moment, and achieving the effect of preventing loosening and retreating. [0003] The existing patented technology improves the ordinary bolts to a certain extent to form double-nut bolts and three-nut bolts. By increasing the friction torque b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/12F16B37/00F16B35/04
CPCF16B35/041F16B37/00F16B39/12
Inventor 郭大林朱咸仕
Owner DONGFENG COMML VEHICLE CO LTD