公开(公告)号：US09777780B2

公开(公告)日：2017-10-03

申请号：US14655302

申请日：2013-12-10

Applicant: DENSO CORPORATION

Inventor： Yousuke Yamagami ,  Motohiko Ueda ,  Tooru Ookuma ,  Yasuo Tabuchi ,  Tomoyuki Mizuguchi ,  Kazunori Mizutori ,  Yasuhiro Tamatsu

IPC: F16D27/00 ,  F16D27/112 ,  B23P11/00

CPC classification number: F16D27/004 ,  B23P11/00 ,  B23P2700/50 ,  F16D27/112 ,  F16D2027/008

Abstract: A ring insertion groove is formed between adjacent two of circular plates, which are made of a magnetic material and are arranged concentric with each other, and a ring, which is made of a non-magnetic material and has a larger deformation resistance in comparison to the magnetic material of the plates, is press fitted into the ring insertion groove. Thereafter, a peripheral part around an opening of the ring insertion groove is plastically flowed, so that a compression stress is left in the ring.