JPH01133517U

JPH01133517U -

Info

Publication number: JPH01133517U
Application number: JP2924688U
Authority: JP
Priority date: 1988-03-04
Filing date: 1988-03-04
Publication date: 1989-09-12

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は一部切
欠正面図、第２図は第１図の―視拡大断面図
である。１…クランク軸、２…ジヤーナル部、３…クラ
ンクピン、４…軸受部、５…上半分の軸受メタル
、６…軸受キヤツプ体、７…下半分の軸受メタル
、８…環状溝、９…潤滑油供給通路、１０，１３
…オイル通路、１１…第１開口部、１２…第２開
口部、１４，１５…第１通孔、１６，１７…第２
通孔、１８…一方の合せ面、１９…他方の合せ面
。 The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway front view, and FIG. 2 is an enlarged cross-sectional view of FIG. 1. 1... Crankshaft, 2... Journal part, 3... Crank pin, 4... Bearing part, 5... Upper half bearing metal, 6... Bearing cap body, 7... Lower half bearing metal, 8... Annular groove, 9... Lubrication Oil supply passage, 10, 13
...Oil passage, 11...First opening, 12...Second opening, 14, 15...First through hole, 16, 17...Second
Through hole, 18...one mating surface, 19...other mating surface.

Claims

[Scope of utility model registration request]

The journal portion of the crankshaft is supported by an upper half of the bearing metal fitted into a bearing formed on the cylinder block, and a lower half of the bearing metal fitted into a bearing cap fastened to the bearing. An annular groove surrounding both the upper and lower bearing metals is provided in the bearing portion and the bearing cap body, a circulating oil supply passage from a lubricating oil source is communicated with the annular groove, and the upper and lower bearing metals are provided with an annular groove that surrounds the upper and lower bearing metals. A first opening is formed in the crankshaft and is opened at a crank angle of approximately 180 degrees with respect to the outer peripheral surface of the journal portion of the crankshaft, while each opening is provided with a through hole that communicates the inner circumference with the annular groove. A bearing device comprising an oil passage that communicates the first opening and the second opening with the outer circumferential surface of the crank pin of the crankshaft,
The through holes in both the upper and lower bearing metals are configured into two, a first through hole and a second through hole, and the first through hole in each of the both bearing metals is formed into two through holes in the bearing portion and the bearing cap body. Approx. 22mm from one mating surface
．． A second through hole in each of the two bearing metals is formed at a position offset by an angle of 5 degrees from the other mating surface of the bearing portion and the bearing cap body by about 67 degrees.
A crankshaft bearing device for an internal combustion engine, characterized in that each bearing device is located at a position shifted by an angle of 5 degrees.