JPH0463810U

JPH0463810U -

Info

Publication number: JPH0463810U
Application number: JP1990106455U
Authority: JP
Priority date: 1990-10-09
Filing date: 1990-10-09
Publication date: 1992-05-29

Description

[Brief explanation of the drawing]

第１〜８図はこの考案の１実施例を示し、第１
図はクランク軸半割平軸受を示す斜視図、第２図
は第１図の−線拡大断面図、第３図は第２図
の−線断面図、第４図はクランク軸半割平軸
受の組み付け状態を示す断面図、第５図は凹条を
示す断面図、第６図は凹条の他の構造例を示す第
５図と同様の断面図、第７図は作用説明図、第８
図はクランク軸付近を分解して示す斜視図、第９
，１０図は従来の半割平軸受の加工方法を示す図
である。１……クランク軸半割平軸受、１ａ……軸受内
周面、１ｂ……クラツシユリリーフ、１ｃ……中
間面、１ｄ……凹条、１ｅ……浅溝、１ｆ……軸
受合金層、２……ケース、３……クランク軸、４
……コンロツド軸受、５……コンロツド。 Figures 1 to 8 show one embodiment of this invention.
The figure is a perspective view showing the crankshaft half flat bearing, Figure 2 is an enlarged cross-sectional view taken along the - line in Figure 1, Figure 3 is a cross-sectional view taken along the - line in Figure 2, and Figure 4 is the crankshaft half flat bearing. 5 is a sectional view showing the grooved strip, FIG. 6 is a sectional view similar to FIG. 5 showing another structural example of the grooved strip, FIG. 8
The figure is an exploded perspective view showing the vicinity of the crankshaft.
, 10 is a diagram showing a conventional method of machining a half-split flat bearing. 1...Crankshaft half flat bearing, 1a...Bearing inner peripheral surface, 1b...Crush relief, 1c...Intermediate surface, 1d...Concave line, 1e...Shallow groove, 1f...Bearing alloy layer, 2...Case, 3...Crankshaft, 4
...Conrod bearing, 5...Conrod.

Claims

[Scope of utility model registration request]

In a half-split crankshaft flat bearing in which a crush relief is formed over the entire width of both circumferential ends of the semi-cylindrical inner circumferential surface of the bearing, a shallow circumferential groove is formed in the widthwise middle part of the crush relief. At the same time,
It is confirmed that the machining roughness of the crush relief surface is rougher than that of the intermediate surface in the circumferential direction, which is the main bearing surface, and that a large number of grooves, which are traces of machining, extend in the circumferential direction. Features a half-split flat crankshaft bearing.