JPS6392090U

JPS6392090U -

Info

Publication number: JPS6392090U
Application number: JP18812286U
Authority: JP
Priority date: 1986-12-06
Filing date: 1986-12-06
Publication date: 1988-06-14

Description

[Brief explanation of the drawing]

第１図はこの考案に係るインターナルギアポン
プの第１実施例を示す要部斜視図、第２図はこの
考案の第２実施例を示す要部斜視図、第３図は同
第３実施例を示す要部斜視図、第４図は同第４実
施例を示す要部斜視図、第５図は従来のインター
ナルギアポンプを示す要部断面図である。１……ポンプケーシング、１ａ……内端部、４
……インナーギア、４ａ……内周面、５……アウ
ターギア、８……軸受部、８ａ……外周面、１１
，１２，１３……第１〜第２油溝（油溝）。 Fig. 1 is a perspective view of essential parts showing a first embodiment of the internal gear pump according to this invention, Fig. 2 is a perspective view of main parts showing a second embodiment of this invention, and Fig. 3 is a third embodiment of the same. FIG. 4 is a perspective view of essential parts showing the fourth embodiment, and FIG. 5 is a sectional view of essential parts showing a conventional internal gear pump. 1...Pump casing, 1a...Inner end, 4
...Inner gear, 4a...Inner circumferential surface, 5...Outer gear, 8...Bearing portion, 8a...Outer circumferential surface, 11
, 12, 13...first to second oil grooves (oil grooves).

Claims

[Scope of utility model registration request]

A pump casing rotatably houses an inner gear and an outer gear that mesh with each other, and a bearing section provided at an inner end of the pump casing and bearing an inner circumferential surface of the inner gear on an outer circumferential surface. An internal gear pump comprising: an oil groove formed on the outer peripheral surface of the bearing portion.