Anti-loose bolt and nut structure
By using segmented irregular threads and nut structures with opposite directions of rotation, the problems of bolt anti-loosening structures being unable to completely prevent loosening and the complexity of thread processing are solved, achieving complete anti-loosening and improved nut stability, reducing production costs and increasing assembly efficiency.
CN122148642APending Publication Date: 2026-06-05ZHEJIANG CFMOTO-KTMR2R MOTORCYCLES CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG CFMOTO-KTMR2R MOTORCYCLES CO LTD
- Filing Date
- 2026-04-02
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
Existing bolt anti-loosening structures cannot completely prevent loosening, thread processing is complex and difficult to mass-produce, and the working state of nuts is unstable.
Method used
It adopts a segmented special-shaped thread design, combined with a primary nut and a secondary nut structure with opposite directions of rotation. The secondary nut engages with the bolt through a split combination structure, using friction to prevent loosening, simplifying thread processing and improving nut stability.
Benefits of technology
It achieves a complete anti-loosening effect, simplifies thread processing, improves the working stability and assembly efficiency of nuts, and reduces production costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122148642A_ABST
Abstract
The application provides a kind of anti-loose bolt nut structure, relating to fastener technical field, including bolt, primary nut and secondary nut;Bolt outer periphery is provided with segmented type equal diameter segmented profile thread, can be adapted to opposite screwing of nut simultaneously;Primary nut and secondary nut are opposite, secondary nut is split combined structure, which is spliced by nut combination one and nut combination two, and the combined plug-in part of both forms the internal thread through hole adapted to bolt after splicing.The characteristics of opposite loosening direction of positive and negative screwing nut are used to realize complete anti-loose, and the bolt adopts segmented thread with equal diameter, which is low in processing difficulty, easy to mass-produce, high in nut screwing stability, convenient to assemble, and excellent in anti-loose effect.
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