FORTIFICATION STRUCTURE

The fastening structure addresses seizure by ensuring surface contact through differential rigidity, enhancing friction and preventing wear without additional costs.

DE102025102452A1Pending Publication Date: 2025-07-31ISUZU MOTORS LTD
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Patent Information

Application Number
DE102025102452
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-01-30
Filing Date
2025-01-23
Publication Date
2025-07-31

AI Technical Summary

Technical Problem

Seizure occurs at the contact surfaces of fastened components due to manufacturing or assembly errors, leading to relative movement and wear, which existing solutions to increase surface pressure or apply protective layers increase costs and may not be feasible.

Method used

A fastening structure where the rigidity of a portion of the first member around the through hole is less than that of the second member, allowing deformation and surface contact upon tightening, thereby suppressing seizure.

Benefits of technology

The structure ensures surface contact between fastened members, enhancing frictional force and preventing relative movement, thus suppressing seizure without increasing costs.

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Abstract

A fastening structure comprising: a first member having a through-hole; a second member; and a fastening member inserted through the through-hole and fastening the first member and the second member, wherein the rigidity of a portion of the first member around the through-hole is lower than the rigidity of a portion of the second member fastened with the fastening member.
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Claims

[1] A mounting structure comprising: a first component having a through-hole; a second component; and a fastening component inserted through the through-hole and fastening the first component and the second component, wherein the rigidity of a region of the first component around the through-hole is lower than the rigidity of a region of the second component fastened with the fastening component. [2] The fastening structure according to claim 1, wherein the second component has a through-hole, and the fastening component is inserted through the respective through-holes of the first component and the second component. [3] A mounting structure comprising: a first component having a through-hole; a second component; and a fastening component inserted through the through-hole and fastening the first component and the second component, wherein the first component and the second component come into surface contact with each other due to the deformation of at least one of the first component and / or the second component as a result of the fastening force of the fastening component. [4] The fastening structure according to claim 1, wherein the first component is a bracket for attaching a compressor to an engine, and the second component is a bracket for suspending the engine. [5] The fastening structure according to claim 1, wherein the region of the first component around the through hole is formed as a thin region. [6] The fastening structure according to claim 1, wherein the region of the first member around the through-hole is formed as a thin region by forming a region of the through-hole close to the second member as a large-diameter region and a region of the through-hole far from the second member as a small-diameter region. [7] The fastening structure according to claim 1, wherein the material of the region of the first component around the through-hole has a lower rigidity than the material of the region of the second component which is fastened to the fastening component.