公开(公告)号：US11824419B2

公开(公告)日：2023-11-21

申请号：US17828771

申请日：2022-05-31

Applicant: DENSO CORPORATION

Inventor： Shinji Kawada ,  Toshihisa Nakajima ,  Shin Sen

IPC: H02K49/10 ,  H02K7/11

CPC classification number: H02K49/102 ,  H02K7/11 ,  H02K49/108

Abstract: A drive transmission device includes a drive-side rotatable body, a plurality of magnetic conducting portions and a driven-side rotatable body. The drive-side rotatable body includes a plurality of magnetic poles arranged in a rotational direction. The magnetic conducting portions are magnetizable by the magnetic poles of the drive-side rotatable body. The driven-side rotatable body has a plurality of magnetic poles configured to be rotated in response to rotation of the magnetic poles of the drive-side rotatable body through the magnetic conducting portions. The drive transmission device is configured to be operated as a magnetic speed changer that changes a speed of rotation between the drive-side rotatable body and the driven-side rotatable body by differently setting the number of the magnetic poles of the drive-side rotatable body, the number of the magnetic conducting portions and the number of the magnetic poles of the driven-side rotatable body from each other.