JPH01162091U

JPH01162091U -

Info

Publication number: JPH01162091U
Application number: JP5880288U
Authority: JP
Priority date: 1988-04-30
Filing date: 1988-04-30
Publication date: 1989-11-10
Anticipated expiration: 2003-04-30
Also published as: JPH0744778Y2

Description

[Brief explanation of the drawing]

第１〜７図はこの考案の実施例を示し、第１図
は内燃機関の一部切断斜視図、第２図は内ロータ
と外ロータとを内装した状態のポンプハウジング
の正面図、第３図は内ロータと外ロータとを内装
した状態のポンプハウジングの背面図、第４図は
ケーシングの正面図、第５図はカバーの背面図、
第６図は第２図の―線断面図、第７図は第２
図の―線断面図である。図において、２は内燃機関、４はシリンダヘツ
ド、６はシリンダブロツク、８はオイルパン、１
０はクランク軸、１２はオイルポンプ、１４は油
ストレーナ、１６は油フイルタ、１８はポンプハ
ウジング、２０は内ロータ、２２は外ロータ、２
４はケーシング、２６はカバー、２８はロータ室
、３０は固定具、３２は空間、３４は吸入ポート
、３６は吐出ポート、３８は吸入通路、３８は吐
出通路、４２は吸入側連絡通路、４４は吸入側マ
ニホルド、４６は吐出側連絡通路、４８は吐出側
マニホルドである。 1 to 7 show an embodiment of this invention, in which FIG. 1 is a partially cutaway perspective view of an internal combustion engine, FIG. 2 is a front view of the pump housing with the inner rotor and outer rotor installed, and FIG. The figure is a rear view of the pump housing with the inner rotor and outer rotor inside, Figure 4 is a front view of the casing, Figure 5 is a rear view of the cover,
Figure 6 is a sectional view taken along the - line in Figure 2, and Figure 7 is a cross-sectional view of Figure 2.
FIG. In the figure, 2 is an internal combustion engine, 4 is a cylinder head, 6 is a cylinder block, 8 is an oil pan, 1
0 is a crankshaft, 12 is an oil pump, 14 is an oil strainer, 16 is an oil filter, 18 is a pump housing, 20 is an inner rotor, 22 is an outer rotor, 2
4 is a casing, 26 is a cover, 28 is a rotor chamber, 30 is a fixture, 32 is a space, 34 is a suction port, 36 is a discharge port, 38 is a suction passage, 38 is a discharge passage, 42 is a suction side communication passage, 44 4 is a suction side manifold, 46 is a discharge side communication passage, and 48 is a discharge side manifold.

Claims

[Claims for Utility Model Registration] 1. The teeth of an inner rotor and an outer rotor are meshed with each other in a rotor chamber provided in a pump housing so that they can rotate eccentrically, and the rotor rotation axis of the pump housing has an opening in the rotor chamber. A contact surface of the casing is brought into contact with one side in the direction and fixed by a fixture, and a space is formed between each of the teeth that moves while expanding and contracting in the rotor rotational direction due to eccentric rotation of the inner rotor and the outer rotor. In an oil pump that sucks in fluid from a suction port, compresses it, and discharges it to a discharge port, each contact portion between one side of the pump housing in the rotor rotational axis direction and the contact surface of the casing that comes into contact with this one side is provided. A suction passage communicating with the suction port and a discharge passage communicating with the discharge port are respectively recessed and have a required cross-sectional area, and at least the discharge passage has a required cross-sectional area while being recessed in the direction of the rotation axis of the rotor. An oil pump characterized in that the depth is larger than the width in each surface direction. 2. The oil pump is configured such that the length of the pump housing in the rotor rotation axis direction is formed to substantially match the length of the rotor, so that the rotor chambers are opened on both sides of the pump housing in the rotor rotation axis direction. a suction-side communication passageway that connects a suction passageway that communicates with the suction port and a fluid storage area; a cover that covers an opening part of the rotor chamber that opens on the other side of the pump housing in the direction of the rotor rotation axis; At least the constituent members of the suction side communicating passage are connected to the pump housing, the inner and outer rotors, the casing and The oil pump according to claim 1, which is made of a material that is lighter than the cover.