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.