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.
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
During disassembly, screws can easily detach from the cover and be lost, causing inconvenience and loss.
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.
It effectively prevents the fasteners from naturally separating from the connectors, avoids screw loss, and improves connection stability and anti-loosening performance.
Smart Images

Figure CN224533202U_ABST