公开(公告)号：US20160333876A1

公开(公告)日：2016-11-17

申请号：US15111188

申请日：2015-01-19

Applicant: KYB Corporation

Inventor： Tomoyuki FUJITA ,  Koichiro AKATSUKA ,  Fumiyasu KATO ,  Hiroki GOMI

IPC: F04C15/06 ,  F04C2/344

CPC classification number: F04C15/06 ,  F01C21/0863 ,  F04C2/3446 ,  F04C15/0049 ,  F04C2210/206 ,  F04C2240/20 ,  F04C2250/102 ,  F04C2250/30

Abstract: A vane pump used as a fluid pressure source includes: a rotor that is rotationally driven; a plurality of vanes that are inserted into the rotor in a freely slidable manner; a cam ring at which tip-end portions of the vanes slides as the rotor rotates; a pump chamber that is defined between the adjacent vanes; a suction port that guides working fluid to the pump chamber; a discharge port through which the working fluid discharged from the pump chamber is guided; a groove-like notch that extends from an opening edge of the discharge port in an opposite direction from rotation direction of the rotor, and the notch has a gradient-changing portion at which a rate of change of opening area is decreased in the rotation direction of the rotor.

Abstract translation: 用作流体压力源的叶片泵包括：旋转驱动的转子; 以可自由滑动的方式插入转子中的多个叶片; 凸轮环，当转子旋转时，叶片的尖端部分滑动; 在相邻叶片之间限定的泵室; 将工作流体引导到泵室的吸入口; 引导从泵室排出的工作流体的排出口; 从所述排出口的开口边缘沿与所述转子的旋转方向相反的方向延伸的槽状切口，所述切口具有梯度变化部，所述切口部的开口面积的变化率在旋转方向上减小 的转子。

公开(公告)号：US20220170458A1

公开(公告)日：2022-06-02

申请号：US17600557

申请日：2020-03-05

Applicant: KYB Corporation

Inventor： Ryouichi NAGASAKA ,  Fumiyasu KATO ,  Hiroki IKEDA

IPC: F04C2/344 ,  F04C15/00

Abstract: A cartridge vane pump includes: a linkage member being configured to link the side member and the cover member, the linkage member has: a first support portion configured to support the side member; a second support portion configured to support the cover member; and an extended portion formed so as to extend between the first support portion and the second support portion, the extended portion extending in an axial direction of the rotor, grooves are respectively formed in outer circumferential surfaces of the side member and the cover member so as to extend in a circumferential direction, and the first support portion and the second support portion are respectively received in the grooves formed in the side member and the cover member.

公开(公告)号：US20200347844A1

公开(公告)日：2020-11-05

申请号：US16765133

申请日：2018-11-09

Applicant: KYB Corporation

Inventor： Fumiyasu KATO ,  Koichiro AKATSUKA

IPC: F04C2/344 ,  F04C14/22

Abstract: A vane pump includes a rotor having slits, vanes received in the slits, a cam ring having an inner circumference cam face with which the vanes are brought into sliding contact, side members, pump chamber formed by the rotor, the cam ring, adjacent vanes, and back pressure chambers formed in the slits by the vanes. In the vane pump, the side members are provided with back pressure opening portions opening at sliding-contact surfaces in sliding contact with the rotor, the back pressure opening portions being configured to communicate with the back pressure chambers, and protruding opening portions protruding along the rotating direction of the rotor from end portions of the back pressure opening portions on the communication-finishing side. And inner-side inner circumferential surfaces of the protruding opening portions are respectively connected to inner-side inner circumferential surfaces of the back pressure opening portions.