JPS5866139U

JPS5866139U - Internal combustion engine crankshaft bearing device

Info

Publication number: JPS5866139U
Application number: JP16018181U
Authority: JP
Inventors: 利宏二宮
Original assignee: 日産自動車株式会社
Priority date: 1981-10-29
Filing date: 1981-10-29
Publication date: 1983-05-06

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の一体型メインベアリングキャップを示す
下方から眺めた斜視図、第２図及び第３図は従来の一体
型メインベアリングキャップの他の例を示すもので、第
２図は平面図、第３図は第２図における■−■矢視断面
図、第４図は第２図におけるＩＶ−ｍＶ矢視断面図、第
５図は第４図の■−■矢視平面図で取付ボルトの配列状
態を説明した図、第６図は第５図のＶＩ−ＶＩ矢視断面
図、第７図は同上に使用したスプリングダウェルの斜視
図、第８図及び第９図は本考案の一実施例を示すもので
、第８図は従来説明における一部５図相当図、第９図は
同上における■−■矢視断面図である。１・・・メインベアリングキャップ、２・・・ベアリン
グキャップ部、３・・・連結リブ、４・・・クロスリブ
、５・・・取付ボルト、６・・・クランクシャフト、８
・・・ネジ孔、９・・・スプリングダウェル、１１．Ｉ
ＩＡ・・・ボルト挿通孔、Ｄ２・・・取付ボルトの外径
、Ｄ３・・・ボルト挿通孔１１Ａの内径、Ｄ、・・・ボ
ルト挿通孔１１−の内径。第２図第９図Figure 1 is a perspective view from below showing a conventional integrated main bearing cap, Figures 2 and 3 are other examples of the conventional integrated main bearing cap, and Figure 2 is a plan view. , Figure 3 is a sectional view taken along the ■-■ arrow in Figure 2, Figure 4 is a sectional view taken along the IV-mV arrow in Figure 2, and Figure 5 is a plan view taken along the ■-■ arrow in Figure 4. 6 is a sectional view taken along the line VI-VI in FIG. 5, FIG. 7 is a perspective view of the spring dowel used in the above, and FIGS. 8 and 9 are views of the present invention. FIG. 8 is a view corresponding to a part of FIG. 5 in the conventional explanation, and FIG. 9 is a cross-sectional view taken along the line -■ in the same example. DESCRIPTION OF SYMBOLS 1... Main bearing cap, 2... Bearing cap part, 3... Connecting rib, 4... Cross rib, 5... Mounting bolt, 6... Crankshaft, 8
...Screw hole, 9...Spring dowel, 11. I
IA... Bolt insertion hole, D2... Outer diameter of mounting bolt, D3... Inner diameter of bolt insertion hole 11A, D,... Inner diameter of bolt insertion hole 11-. Figure 2 Figure 9

Claims

[Scope of utility model registration request]

A main bearing cap is formed by integrally configuring a plurality of bearing cap parts, and a mounting bolt inserted into a bolt insertion hole of the main bearing cap is screwed into a bearing part of a cylinder block to connect the bearing part and the bearing cap part. In a crankshaft bearing device in which a journal of a crankshaft is pivotally supported between, only one of the bolt insertion holes is formed to have the minimum inner diameter necessary for inserting a positioning member such as a mounting bolt or a spring dowel, and the other holes are formed to have a smaller inner diameter than this. A crankshaft bearing device for an internal combustion engine, characterized in that it is formed with a large inner diameter.