JPS61149709U

JPS61149709U -

Info

Publication number: JPS61149709U
Application number: JP3296785U
Authority: JP
Priority date: 1985-03-08
Filing date: 1985-03-08
Publication date: 1986-09-16

Description

[Brief explanation of the drawing]

第１図は本考案に係るオイルポンプを適用した
エンジンの一部破断正面図、第２図は第１図Ａ―
Ａ線方向から見た図、第３図は同オイルポンプの
分解斜視図、第４図は別実施例に係るオイルポン
プを適用したエンジンの一部破断正面図、第５図
は従来のオイルポンプの構造を示す断面図である
。尚、図面中１はシリンダブロツク、３はクラン
クシヤフト、４はオイルポンプ、１１はインナロ
ータ、１１ａはインナロータのポンプボデイ側の
面、１１ｂはインナロータのポンプカバー側の面
、１２はアウタロータ、１３はボデイケース、１
４はカバープレート、１５はオイルシール、１６
，２６は溝、１７，２７は突部である。 Fig. 1 is a partially cutaway front view of an engine to which the oil pump according to the present invention is applied, and Fig. 2 is Fig. 1A-
3 is an exploded perspective view of the same oil pump, FIG. 4 is a partially cutaway front view of an engine to which an oil pump according to another embodiment is applied, and FIG. 5 is a conventional oil pump. FIG. In the drawings, 1 is the cylinder block, 3 is the crankshaft, 4 is the oil pump, 11 is the inner rotor, 11a is the surface of the inner rotor on the pump body side, 11b is the surface of the inner rotor on the pump cover side, 12 is the outer rotor, and 13 is the body case. ,1
4 is a cover plate, 15 is an oil seal, 16
, 26 are grooves, and 17, 27 are protrusions.

Claims

[Scope of Claim for Utility Model Registration] (1) A body case on the outside of the engine body containing an inner rotor fitted to the crankshaft of an internal combustion engine and an outer rotor eccentrically inscribed on the outer periphery of the inner rotor, and a cover plate covering the back of the body case. In the indirect gear type oil pump, the rotation of the inner rotor is guided by a concave-convex engaging portion between the inner rotor and the body case or the cover plate, and the position of the concave-convex engaging portion is on the body case side of the inner rotor. An oil pump for an internal combustion engine, characterized in that the surface of the oil pump is closer to the cover plate than the surface of the oil pump. (2) The oil for an internal combustion engine according to claim 1, in which the uneven engagement portion comprises a groove formed on the surface of the inner rotor on the body case side and a protrusion formed integrally with the body case. pump. (3) The oil for an internal combustion engine according to claim 1, wherein the uneven engaging portion comprises a protrusion integrally formed on the surface of the inner rotor on the cover plate side and a groove formed on the cover plate. pump.