Anti-loosening self-locking sawtooth screw

By designing anti-loosening components on the serrated screws and utilizing the cooperation between the stud and the friction pad, the problem of loosening and falling off of the serrated screws under vibration conditions is solved, achieving a dual anti-loosening effect and improving the reliability of the connection.

CN224326545UActive Publication Date: 2026-06-05WENZHOU YIXIN STANDARD PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU YIXIN STANDARD PARTS CO LTD
Filing Date
2025-07-18
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing serrated screws are prone to loosening and falling off under vibration conditions, resulting in poor connection reliability.

Method used

A self-locking anti-loosening serrated screw was designed, comprising a serrated screw rod, a hexagonal head, and an anti-loosening component, including a hexagonal head, a stud, a rotating connector, a hexagonal sleeve, a friction pad, and a threaded groove. The anti-loosening function is achieved by the stud being screwed into the threaded groove and the friction pad engaging.

Benefits of technology

It effectively reduces the loosening and falling off of serrated screws under vibration conditions, and improves the reliability of the connection.

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Abstract

The utility model discloses a kind of anti-drop self-locking sawtooth screws, including sawtooth screw rod, the sawtooth screw rod top end is connected with hex head one, the hex head one top end is equipped with anti-loose component, the anti-loose component includes hex head two, stud, rotary connecting piece, hex sleeve, friction pad and screw groove, the rotary connecting piece includes rotation groove and rotary table. Advantageous effect lies in: the utility model is installed by the anti-loose component that hex head two, stud, rotary connecting piece, hex sleeve, friction pad and screw groove are constituted to hex head one outside on sawtooth screw rod, so that the sawtooth screw can have double anti-loose function under the action of sawtooth screw rod and anti-loose component when using, effectively reduce the loosening and falling phenomenon of the sawtooth screw when using under vibration condition, so that the reliability of the sawtooth screw when connecting and using under vibration condition is better.
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