公开(公告)号：US11644031B2

公开(公告)日：2023-05-09

申请号：US17283668

申请日：2019-10-29

Applicant: KYB Corporation

Inventor： Yusuke Ohmori ,  Tomoyuki Nakagawa ,  Masamichi Sugihara ,  Atsumi Takahashi ,  Satoshi Watanabe

IPC: F04C2/344 ,  F04C14/04 ,  F01C21/10 ,  F04C15/06

CPC classification number: F04C2/3446 ,  F01C21/108 ,  F04C14/04 ,  F04C15/06 ,  F04C2240/30 ,  F04C2250/102

Abstract: A vane pump includes: a rotor; vanes freely slidably received in the rotor; a cam ring having a cam face with which the vanes come into sliding contact; a side member having a sliding contact surface with which side surfaces of the rotor and the vanes come into sliding contact; pump chambers; and a discharge port configured to guide working fluid discharged from the pump chambers. The side member has a guide surface that is provided on an end portion side of the opening portion, the guide surface being configured to push the end portions of the vanes upward and guide them toward the sliding contact surface of the side member as the rotor is rotated in the reverse rotation direction.

公开(公告)号：US09995301B2

公开(公告)日：2018-06-12

申请号：US15123029

申请日：2015-03-04

Applicant: KYB Corporation

Inventor： Masamichi Sugihara ,  Tomoyuki Fujita ,  Tomoyuki Nakagawa ,  Tsutomu Komiya

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C2/344 ,  F01C21/08 ,  F01C21/10 ,  F04C15/00

CPC classification number: F04C2/3448 ,  F01C21/0809 ,  F01C21/0854 ,  F01C21/0863 ,  F01C21/10 ,  F01C21/108 ,  F04C2/3446 ,  F04C15/00 ,  F04C2230/603 ,  F04C2240/10 ,  F04C2240/20

Abstract: A vane pump includes a rotor; a plurality of vanes; a cam ring; and a pump body having an accommodating concave portion accommodating the cam ring. The cam ring includes a ring fitting portions formed in a plurality of regions on an outer circumference and a ring small-diameter portions formed on the outer circumference so as to have an outer diameter smaller than those of the ring fitting portions. The accommodating concave portion has a body fitting portion to which the ring fitting portions is fitted and a body large-diameter portions formed on the inner circumference in a plurality of regions so as to have an inner diameter lager than that of the body fitting portions.