Bearing parts

Abstract

On the inner peripheral surface of the shaft hole (1A) where the shaft body (2) is installed, a base material (3A) made of metal and a base material (3A) dispersed in the base material (3A) and having a relatively larger thermal conductivity than the base material (3A) are arranged. The covering layer (3) made of thermally conductive material (3B), and the length (Lb, Lc) of the thermally conducting material (3B) as the direction (B, C) along the surface of the covering layer (3) is greater than that of the covering layer ( 3) The bearing member (1) having a long length (La) in the thickness direction (A) improves the thermal conductivity along the directions (B, C) of the inner peripheral surface of the shaft hole (1A), thereby improving Heat dissipation, suppressing the increase in temperature due to sliding contact with the shaft body (2), and improving the seizure resistance.

Description

technical field [0001] The present invention relates to a bearing component used as a sliding bearing, for example, in a rotary sliding part of an automobile engine. Background technique [0002] As a conventional bearing component, the bearing component described in patent document 1 is mentioned, for example. The bearing component described in Patent Document 1 is used in internal combustion engines of automobiles and the like. The bearing part is a multilayer sliding bearing in which an alloy covering bearing layer with a thickness of 3 to 50 μm is provided on the surface of a copper alloy layer with a predetermined thermal expansion coefficient, thermal conductivity and endurance. The deformation followability of the bearing shell is high, and the heat dissipation is excellent. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Application Laid-Open No. 6-94037 [0006] However, when the above-mentioned conventional b...

AI Technical Summary

Problems solved by technology

[0006] However, when the above-mentioned conventional bearing member is applied to the main metal of the automobile engine or the metal of the connecting rod, since it receives the load from the axial direction of the connecting rod and is in rotational sliding contact with the shaft body, there is a gap between the shaft body and the shaft body. There is a possibility of sintering due to frictional heat in a local high-temperature area where frictional heat is generated

Such a bearing component, especially as one of the measures to reduce the weight of the engine, has the problem that if the shaft length is reduced, the friction force will increase as the surface pressure increases, and sintering will easily occur.

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