JPS6159888U

JPS6159888U -

Info

Publication number: JPS6159888U
Application number: JP14638484U
Authority: JP
Priority date: 1984-09-27
Filing date: 1984-09-27
Publication date: 1986-04-22

Description

[Brief explanation of the drawing]

第１図は本考案による内接歯車式オイルポンプ
の一つの実施例をその要部について示す平面図、
第２図は第１図の線−に沿う断面図である。１…ポンプハウジング、２…シリンダブロツク
、３…ポンプ室、４…アウタロータ、５…内歯、
６…インナロータ、７…外歯、８…吸入ポート、
９…吐出ポート、１０…軸受孔、１１…駆動軸、
１２…キー、１３…タイミングプーリ、１４…タ
イミングベルト、１５…オイル溝、１６…シール
部材、１７…ポンプ室側空間、１８…オイル戻し
孔。 FIG. 1 is a plan view showing the main parts of one embodiment of the internal gear type oil pump according to the present invention;
FIG. 2 is a sectional view taken along the line - in FIG. 1. 1...Pump housing, 2...Cylinder block, 3...Pump chamber, 4...Outer rotor, 5...Inner tooth,
6... Inner rotor, 7... External teeth, 8... Suction port,
9...Discharge port, 10...Bearing hole, 11...Drive shaft,
12... Key, 13... Timing pulley, 14... Timing belt, 15... Oil groove, 16... Seal member, 17... Pump chamber side space, 18... Oil return hole.

Claims

[Scope of utility model registration request]

An outer rotor having internal teeth and an inner rotor having external teeth meshing with the internal teeth are rotatably provided in a pump chamber of a pump housing, and the inner rotor is connected to a drive shaft provided through the pump housing. an internal gear type oil pump configured such that the inner rotor is rotationally driven by the drive shaft, and an annular sealing member surrounding the drive shaft is provided between the pump housing and the drive shaft. The pump housing is characterized in that an oil return hole is provided in the pump housing to communicate the pump chamber side space of the seal member to an intermediate portion between the suction port portion and the discharge port portion of the pump chamber. Internal gear oil pump.