Patent ID: 9261063
Filing Date: 2016-02-16
CPC Classification: F01C,F02M,F03C,F04B,F04C

Claim Text:
1. A vehicle oil pump, comprising: a first member and a second member relatively rotatable around one axial center such that one of the first member and the second member is inserted in an inner circumferential side of the other, the second member comprising a plurality of cam grooves formed in a circumferential surface of the second member facing the first member, a slider member interposed between the first member and the second member in a direction orthogonal to the one axial center, the slider member being relatively immovable in circumferential direction around the one axial center with respect to the first member and slidable in direction parallel to the one axial center, the plurality of cam grooves comprising at least a first cam groove and a second cam groove, a projecting portion disposed on the slider member being fitted in the first cam groove, and the first cam groove causing the slider member to reciprocate in the one axial center direction in association with rotation of the slider member relative to the second member around the one axial center, the second cam groove being formed in the second member so as to be connected to the first cam groove, and a cam groove switching mechanism configured to switch a route through which the projecting portion of the slider member passes between the plurality of cam grooves.