公开(公告)号：US11959482B2

公开(公告)日：2024-04-16

申请号：US17600566

申请日：2020-03-16

申请人： KYB Corporation

发明人： Masamichi Sugihara

IPC分类号： F04C14/26 ,  F01C21/08 ,  F01C21/10 ,  F04C2/344 ,  F04C2/356 ,  F04C15/06

CPC分类号： F04C2/3448 ,  F04C2240/20 ,  F04C2240/30

摘要： A vane pump includes: pump chambers formed by a rotor, a cam ring, and vanes; a first suction port that guides working fluid guided by a suction passage to the pump chambers; a second suction port that guides the working fluid guided from the suction passage through a communication passage to the pump chambers; and a return passage to which excessive fluid of the working fluid discharged from the pump chambers is guided. The return passage has: a body-internal passage through which the excessive fluid flows along an axis direction at an outer side of the cam ring in a radial direction; and a turning passage that reverses the excessive fluid guided through the body-internal passage towards the second suction port.

公开(公告)号：US11644031B2

公开(公告)日：2023-05-09

申请号：US17283668

申请日：2019-10-29

申请人： KYB Corporation

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

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

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

摘要： 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：US11231033B2

公开(公告)日：2022-01-25

申请号：US16611982

申请日：2018-04-25

申请人： KYB Corporation

发明人： Masamichi Sugihara

IPC分类号： F03C2/00 ,  F03C4/00 ,  F04C18/00 ,  F04C2/00 ,  F04C2/344 ,  F01C21/10 ,  F04C15/00

摘要： A cartridge vane pump includes a rotor, a plurality of vanes, a cam ring, a side member brought into contact with a first end surface of the cam ring, a cover member brought into contact with a second end surface of the cam ring, the cover member being attached to the body, and a linkage member provided to extend between the side member and the cover member over an outer circumferential surface of the cam ring, the linkage member being configured to link the side member and the cover member.

公开(公告)号：US11773848B2

公开(公告)日：2023-10-03

申请号：US16612243

申请日：2018-04-24

申请人： KYB Corporation

发明人： Hirotoshi Kondou ,  Masamichi Sugihara

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

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

摘要： 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.

公开(公告)号：US09995301B2

公开(公告)日：2018-06-12

申请号：US15123029

申请日：2015-03-04

申请人： KYB Corporation

发明人： Masamichi Sugihara ,  Tomoyuki Fujita ,  Tomoyuki Nakagawa ,  Tsutomu Komiya

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

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

摘要： 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.