JPS6357375U

JPS6357375U -

Info

Publication number: JPS6357375U
Application number: JP14950486U
Authority: JP
Priority date: 1986-10-01
Filing date: 1986-10-01
Publication date: 1988-04-16
Also published as: JPH0430387Y2

Description

[Brief explanation of the drawing]

第１図及び第２図は本考案のオイルポンプの実
施例を示す断面図、第３図乃至第６図は本考案の
オイルポンプの柱状カムの形状寸法を決定するた
めの過程を説明する図、第７図は第６図の矢視
図で、吐出量可変の柱状カムの構成を説明する図
、第８図は第７図の矢視図、第９図及び第１０
図は作用説明図である。第１１図、第１２図、第
１３図は従来構成のオイルポンプを示す。符号の説明：１０１……筐体、１０２……シリ
ンダ、１０３……吸入口、１０４……吐出口、１
０５……オイルデイストリビユータ、１０６……
ポンプシリンダ、１０７……プランジヤ、１０８
……ポンプ作用室、１０９，１１０……連通路、
１１１……蓋体、１１２……柱状カム、１１３…
…スプリング、１１４……油溜め、１１５……通
路、１１６，１１７……ガイドピン、１１８……
大径部、１１９……小径部、１２０……円錐面、
１２１……プランジヤ大径部、１２２……回動レ
バー、１２３……軸頚部、１２４……プランジヤ
の軌跡。 FIGS. 1 and 2 are cross-sectional views showing an embodiment of the oil pump of the present invention, and FIGS. 3 to 6 are diagrams explaining the process for determining the shape and dimensions of the columnar cam of the oil pump of the present invention. , FIG. 7 is a view taken in the direction of the arrows in FIG. 6, and is a diagram for explaining the structure of the columnar cam with variable discharge amount. FIG. 8 is a view taken in the direction of the arrows in FIG. 7, and FIGS.
The figure is an explanatory diagram of the action. FIGS. 11, 12, and 13 show oil pumps of conventional construction. Explanation of symbols: 101...Housing, 102...Cylinder, 103...Suction port, 104...Discharge port, 1
05...Oil day distributor, 106...
Pump cylinder, 107... Plunger, 108
...Pump action chamber, 109,110...Communication path,
111... Lid body, 112... Columnar cam, 113...
... Spring, 114 ... Oil reservoir, 115 ... Passage, 116, 117 ... Guide pin, 118 ...
Large diameter part, 119... Small diameter part, 120... Conical surface,
121... Plunger large diameter portion, 122... Rotating lever, 123... Shaft neck, 124... Plunger locus.

Claims

[Claims for Utility Model Registration] (1) A cylinder 102 that is bored in the pump housing 101 and has an oil inlet 103 and an oil outlet 104; it is arranged within the cylinder 102 and rotates within the cylinder 102. In the oil distributor 105, a pump cylinder 106 is eccentrically bored, and the rotation of the oil distributor 105 connects the pump cylinder 106 to the suction port 103 and the discharge port 104. The oil distributor 105 has communication passages 109 and/or 110 opened to communicate with each other alternately; the plunger 107 is slidably disposed within the pump cylinder 106; A spring 113 that urges the plunger 107 in a direction that separates the outer end of the plunger 107.
In the oil pump, the columnar cam 112 is in contact with the outer end surface of the plunger 107.
is arranged, and the columnar cam 112 has two cylindrical surfaces having a step between them arranged in the axial direction of the columnar cam 112, and as the oil distributor 105 rotates, the plunger 1
An oil pump characterized in that it functions as a lead cam that gives reciprocating motion to the oil pump. (2) The oil pump according to claim 1, wherein the two cylindrical surfaces having a step difference from each other are outer circumferential surfaces of the large diameter portion 118 and the small diameter portion 119. (3) The above-mentioned utility model registration claim 1, wherein the two cylindrical surfaces having a step difference from each other are composed of cylindrical surfaces 119 and 132 eccentric to each other, and the columnar cam 112 is rotatably disposed. The oil pump described in item 1. (4) The utility model registration claim in which the radius of the plunger 107 is larger than the deviation between the pump cylinder 106 to the plunger 107 and the oil distributor 105, at least at the outer end where it contacts the columnar cam 112. The oil pump described in the range 1 above.