公开(公告)号：US11773848B2

公开(公告)日：2023-10-03

申请号：US16612243

申请日：2018-04-24

Applicant: KYB Corporation

Inventor： Hirotoshi Kondou ,  Masamichi Sugihara

IPC: F04C15/00 ,  F16J15/10 ,  F16J15/06 ,  F16J15/02 ,  F04C2/344 ,  F04B53/22

CPC classification number: F04C15/0015 ,  F04C15/0034 ,  F04B53/22 ,  F04C2/344 ,  F04C2230/60 ,  F04C2230/70 ,  F16J15/021 ,  F16J15/062 ,  F16J15/10

Abstract: A cartridge vane pump includes: a side plate brought into contact with first end surfaces of the rotor and the cam ring; a cover brought into contact with second end surfaces of the rotor and the cam ring, the cover attached to the body; and an O-ring provided in an outer circumference of the side plate, the O-ring being configured to seal a gap between the outer circumference of the side plate and an inner circumference of the body. The side plate has: a first flange portion configured to restrict movement of the O-ring towards the rotor side; a second flange portion configured to restrict movement of the O-ring towards an opposite side from the rotor. The first flange portion is formed to be able to compress the O-ring with the body in an axial direction of the driving shaft.