IP Library › Granted Patent US 12680561
Granted Patent B2
US 12680561 · App. 18/521,293 · Granted Jul 14, 2026

Screw fastening structure and component for vehicle

Inventors: Ryota Tada (Tokyo, JP); Toshiharu Ajisaka (Tokyo, JP); Kazuma Kamioka (Tokyo, JP)
Assignee: STANLEY ELECTRIC CO., LTD.
F16B5/02F16B5/0096F16B17/00F16B39/22F21S41/29Y10T403/4949Y10T403/4966Y10T403/75
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Quick Facts
Patent No.
US 12680561
App. No.
18/521,293
Granted
Jul 14, 2026
Kind
B2
Abstract

A screw fastening structure that fastens at least a first member and a second member using screw, the first member includes a boss protruding toward the second member and a screw hole through which a screw is screwed on a tip of the boss, the second member includes a through-hole through which the boss passes, a cylindrical part protruding from a periphery of the through-hole over the entire circumference, and a plurality of projection portions disposed on a tip side of the cylindrical part in a circumferential direction and protruding further than the tip of the boss passing through the through-hole, and when the screw is screwed into the screw hole and the head portion of the screw abuts the tip of the boss, a head portion of the screw is fastened in a state in which the tip sides of the plurality of projection portions are crushed.

Claims (14)

1 . A screw fastening structure, comprising:

a first member and a second member,

wherein the first member includes a boss protruding toward the second member and a screw hole into which a screw is screwed on a tip of the boss,

the second member includes a through-hole through which the boss passes, a cylindrical part protruding from a periphery of the through-hole over the entire circumference, and a plurality of projection portions disposed on a tip side of the cylindrical part in a circumferential direction and protruding further than the tip of the boss passing through the through-hole, and

when the screw is screwed into the screw hole and a head portion of the screw abuts the tip of the boss, the head portion of the screw is fastened in a state in which the tip sides of the plurality of projection portions are crushed.

2 . The screw fastening structure according to claim 1 , wherein, upon fastening of the screw, at least the tip side of the projection portion is plastically deformed, and the cylindrical part is elastically deformed.

3 . The screw fastening structure according to claim 1 , wherein the plurality of projection portions are disposed having intervals in a circumferential direction of the cylindrical part.

4 . The screw fastening structure according to claim 1 , wherein the projection portion has a shape pointed toward a tip thereof.

5 . The screw fastening structure according to claim 4 , wherein the projection portion has a tip surface that abuts with the head portion of the screw, and a pair of inclined surfaces inclined from both sides of the tip surface toward the tip of the cylindrical part.

6 . The screw fastening structure according to claim 1 , wherein three projection portions are disposed in the circumferential direction of the cylindrical part as the plurality of projection portions.

7 . The screw fastening structure according to claim 1 , wherein the first member is formed of a material having a yield point higher than that of the second member.

8 . The screw fastening structure according to claim 7 , wherein the first member is formed of a metal material, and

the second member is formed of a resin material.

9 . A component for a vehicle comprising the screw fastening structure according to claim 1 .