Bolt and nut locking device

By designing a pluggable V-shaped flat washer and a saddle-shaped elastic washer structure, combined with a separable cone and nut sleeve assembly, the problems of bolts and nuts scattering during transportation and time-consuming and laborious assembly are solved. This achieves quick locking and anti-theft functions, improves assembly efficiency, and reduces maintenance costs.

CN121408341APending Publication Date: 2026-01-27JIANGSU GENTECH SEMICON EQUIP CO LTD +1
6 Cites 0 Cited by

Patent Information

Application Number
CN202512020640.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-30
Publication Date
2026-01-27

AI Technical Summary

Technical Problem

During transportation, bolts, nuts, flat washers, and elastic washers are easily scattered, resulting in low assembly efficiency. In addition, the traditional method of fully tightening nuts is time-consuming and laborious, and disassembly is complicated.

Method used

A bolt and nut locking device is designed, which adopts a pluggable V-shaped flat washer and saddle-shaped elastic washer structure. It temporarily locks the bolt and nut by generating elastic deformation and friction through short-stroke tightening. Combined with the design of a separable cone and nut sleeve, it achieves fast locking and anti-theft functions.

Benefits of technology

It improves assembly efficiency, reduces operation time and workload, and enables the nuts to be reused and prevent theft, thus reducing maintenance costs.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention belongs to the technical field of bolt and nut locking, and relates to a bolt and nut locking device. The bolt comprises a bolt head, a bolt column, a nut, a flat washer and a saddle-shaped elastic washer, the bolt head is connected to one end of the bolt column. The nut is in threaded connection with the bolt column. A slot is formed in the flat washer, and one side of the saddle-shaped elastic washer is matched with the slot in an inserting manner; and after one side of the saddle-shaped elastic washer is inserted into the slot, the flat washer and the saddle-shaped elastic washer form a V shape. Compared with a traditional method that a nut is screwed to a bolt head in a long stroke to prevent scattering, the device has the advantages that the flat washer and the saddle-shaped elastic washer are designed to be of the V-shaped structure capable of being combined in an inserted mode, so that the nut only needs to be screwed into a short stroke, enough elastic deformation and friction force can be generated by extruding the saddle-shaped elastic washer, and the temporary locking state is achieved. The process is labor-saving and quick to operate. During formal installation, additional complex operation is not needed, the workload of assembly workers is reduced on the whole, and the working efficiency is improved.
Need to check novelty before this filing date? Find Prior Art