公开(公告)号：US20180180115A1

公开(公告)日：2018-06-28

申请号：US15738152

申请日：2016-07-12

Applicant: DENSO CORPORATION

Inventor： Satoshi IHA ,  Toshihiro HAYASHI

IPC: F16D27/112 ,  F16D13/76

Abstract: An electromagnetic clutch includes: a driving-side rotatable body that is rotated about an axis of a rotatable shaft of a drive-subject device; and a driven-side rotatable body that is placed on one side of the driving-side rotatable body in an axial direction. The electromagnetic clutch includes a flat spring that is formed to be rotatable integrally with the rotatable shaft of the drive-subject device and is joined to the driven-side rotatable body. The electromagnetic clutch includes a blocking member that is installed to the flat spring. A primary through-hole is formed in the driven-side rotatable body. A secondary through-hole is formed in the flat spring. Switching between coupling and decoupling between driving-side rotatable body and the driven-side rotatable body is made through elastic deformation of the flat spring. The blocking member closes the secondary through-hole.