公开(公告)号：US10411569B2

公开(公告)日：2019-09-10

申请号：US15516688

申请日：2015-10-16

Applicant: KYB Corporation ,  TOP Co., Ltd.

Inventor： Takayuki Kawaguchi ,  Tomomi Hayase ,  Ryuichi Kaneko ,  Yoshiteru Kurokawa ,  Hiroyuki Miyoshi ,  Akihiro Kawabata

IPC: H02K15/03 ,  H02K1/27

Abstract: A rotor manufacturing method for manufacturing a rotor including a rotor core, the rotor core having a permanent magnet mounted thereon throughout a circumferential direction, includes covering an outer circumference of the rotor core with a tubular rotor cover; and forming an angular portion conforming to an outer shape of the permanent magnet by pressing an open end of the rotor cover radially inward with use of a pressing member, the open end of the rotor cover axially projecting from an end of the rotor core before being pressed.

公开(公告)号：US11892055B2

公开(公告)日：2024-02-06

申请号：US17277494

申请日：2019-08-01

Applicant: KYB Corporation

Inventor： Tomomi Hayase ,  Tetsuo Arahata ,  Seiji Iwahara ,  Kouhei Tomita

IPC: F16F9/36 ,  F16F9/18 ,  F16F9/06 ,  F16F9/32

CPC classification number: F16F9/369 ,  F16F9/185 ,  F16F9/062 ,  F16F9/064 ,  F16F9/3235 ,  F16F2222/12 ,  F16F2226/04 ,  F16F2230/30 ,  F16F2232/08 ,  F16F2234/02

Abstract: Provided is a shock absorber capable of improving the dimensional quality and ensuring the sealing performance of a seal ring. The shock absorber includes a cylinder, an outer tube, an intermediate tube, and a discharge passage defined between the intermediate tube and the cylinder, a reservoir defined between the intermediate tube and the outer tube. The intermediate tube includes, on its inner circumferential surface, a groove having a concave shape in cross section to be capable of accommodating a seal ring that closes the discharge passage. A relationship of θ1

公开(公告)号：US11583907B2

公开(公告)日：2023-02-21

申请号：US16640459

申请日：2018-08-22

Applicant: KYB Corporation

Inventor： Tomomi Hayase ,  Ryuichi Kaneko

IPC: B21C37/29 ,  B21D28/28

Abstract: Provided are a forming method and a forming apparatus which can secure strength after forming while suppressing deformation.
The forming method of the present invention includes a burring step and a pressing step. In the burring step, a branch pipe is formed by causing a cylindrical peripheral wall of a cylindrical member (workpiece) having the peripheral wall to project in an outside direction in a tubular shape. In the pressing step, a distal end surface of the branch pipe is pressed toward a proximal end portion of the branch pipe. In the pressing step, the distal end surface of the branch pipe can be pressed by an end surface pressing punch in a state where a burring punch is inserted in the branch pipe.