A connecting structure, anti-dropping assembly and fastener

By introducing a design that differentiates the outer diameter of the smooth section and the threaded section in the fastener, an anti-loosening structure for the fastener and connector is achieved, solving the problem of easy screw loss and enhancing the stability and anti-loosening performance of the connection.

CN224533202UActive Publication Date: 2026-07-21STARRETT TOOLS (SUZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
STARRETT TOOLS (SUZHOU) CO LTD
Filing Date
2025-07-17
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

During disassembly, screws can easily detach from the cover and be lost, causing inconvenience and loss.

Method used

A fastener is designed, including a head, a threaded section, and a smooth section, wherein the outer diameter of the smooth section is smaller than the outer diameter of the threaded section. The threaded connection realizes the anti-disengagement structure between the first connector and the fastener. The smooth section contacts the inner wall of the first connector to form an eccentricity, preventing the threaded section from coming out of the connection hole.

Benefits of technology

It effectively prevents the fasteners from naturally separating from the connectors, avoids screw loss, and improves connection stability and anti-loosening performance.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224533202U_ABST
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Abstract

The utility model discloses a connecting structure, prevent falling assembly and fastener, including fastener, the fastener includes head, thread section and the light stem section of connecting head with the thread section, the outer diameter of light stem section is less than the outer diameter of thread section, first connecting piece, first connecting piece has first connecting hole, and the inner wall of first connecting hole has the thread, second connecting piece, second connecting piece has second connecting hole, and the inner wall of second connecting hole has the thread, the thread section of fastener passes first connecting hole with second connecting piece second connecting hole is connected in the thread, in the utility model, when first connecting piece is set up in the outside of light stem section through the thread section rotation, owing to the block of thread section and head, and first connecting piece can only move on light stem section and cannot naturally fall off from thread section, and then constitute a kind of prevent falling structure that connecting piece and fastener separate.
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