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US 2026/0287004 A1Published application
Fastening auxiliary part and fastening system
AssigneeAdvanex Inc.
InventorSakae OKAMURA
Life of this patent
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Abstract
Problem to be Solved: To provide a fastening auxiliary part that can be fastened without using a dedicated tool. Solution to the Problem: A fastening auxiliary part, formed of a wire processed into a helical shape, for reinforcing a female thread portion of a tapped hole formed in a fastening target of a bolt, wherein an insertion side into the tapped hole has a tapered portion, and an inner diameter of the tapered portion is equal to or smaller than a root diameter of a male thread portion of the bolt.
Claims6
1:
- A fastening auxiliary part, formed of a wire processed into a helical shape, for reinforcing a female thread portion of a tapped hole formed in a fastening target of a bolt,
- wherein the fastening auxiliary part has a tapered portion at an insertion side to be inserted into the tapped hole, and
- wherein an inner diameter of the tapered portion is equal to or smaller than a root diameter of a male thread portion of the bolt.
2:
- The fastening auxiliary part according to claim 1,
- wherein the inner diameter of the tapered portion is 90% to 95% of the root diameter of the male thread portion of the bolt.
3:
- The fastening auxiliary part according to claim 1,
- wherein the tapered portion of the wire has one or more turns.
4:
- The fastening auxiliary part according to claim 1,
- wherein the tapered portion of the wire has two or more turns, and
- wherein a diameter of the tapered portion increases linearly from a tip side toward a base side.
5:
- A fastening system comprising:
- the fastening auxiliary part according to claim 1;
- and
- a bolt to be used together with the fastening auxiliary part.
1 more element
6:
- The fastening system according to claim 5,
- wherein the bolt is mounted in the fastening auxiliary part.