Step positioning blind hole press rivet nut column

CN224479159UActive Publication Date: 2026-07-10DONGGUAN XINSANYI HARDWARE PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN XINSANYI HARDWARE PROD CO LTD
Filing Date
2025-07-14
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The existing blind hole press-fit nut column has stress concentration in the thin-walled area and insufficient shear force at the concave ring, which affects its service life. In addition, the starting section of the threaded hole is too close to the end face, which makes installation difficult and the screw difficult to be screwed in smoothly, thus affecting work efficiency.

Method used

Design a blind hole press-fit nut stud with stepped positioning, including an end, a retaining ring and a stud. The end and the retaining ring are riveted together to form a stable connection on a thin plate. The starting section of the threaded hole is provided with a countersunk hole for screw positioning and guidance. The stud is provided with a step around its perimeter for radial positioning and support. The outer surface is plated with a protective layer.

Benefits of technology

It improves the connection strength and service life of the nut post, ensures fast and correct screw installation, avoids stress concentration and thread damage, and improves installation efficiency and aesthetics.

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Abstract

The utility model relates to a step positioning blind hole rivet nut post, including end, baffle ring and stud, three in the axial order from head to tail arrange. The diameter of baffle ring is greater than the axle diameter of end and stud, and the diameter of stud axle section is consistent. The stud is provided with a threaded hole, the threaded hole orifice is provided with a countersunk hole along the axial direction, and the periphery of the stud end is provided with a step. The utility model sets up end at the baffle ring end of nut post, rivets the end, thin plate and baffle ring when nut post is riveted with thin plate, realizes good riveting effect, thereby avoids setting recess ring and other thin neck structures between baffle ring and stud in traditional technology, so that the thin wall area after stud tapping threaded hole leads to stress concentration, makes the nut post shear the weak place of recess ring after connecting screw piece and influences the service life of nut post, sets up countersunk hole at the starting section of threaded hole, makes when connecting screw piece can be positioned and guide screw quickly, improves the efficiency of installation and avoids wrong buckle damage thread.
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