公开(公告)号：US11333205B2

公开(公告)日：2022-05-17

申请号：US16409955

申请日：2019-05-13

Applicant: DENSO CORPORATION

Inventor： Yugo Yamada ,  Akira Kishibuchi ,  Yohei Kushida ,  Junichi Nakagawa ,  Satoshi Kawakami ,  Toshinobu Takasaki ,  Kozo Tomokawa

IPC: F16D27/112 ,  H02K1/22

Abstract: A power transmission device includes an armature that is shaped into a circular ring form. The armature is configured to be coupled with a rotor by an electromagnetic attractive force of an electromagnet at a time of energizing the electromagnet and is configured to be decoupled from the rotor at a time of deenergizing the electromagnet. The armature has an armature-side friction surface that is configured to contact a rotor-side friction surface of the rotor at the time of energizing the electromagnet. The armature-side friction surface has a plurality of grooves, each of which extends from a radially inner end portion of the armature-side friction surface to a location that is on a radially inner side of a radially outer end portion of the armature-side friction surface.

公开(公告)号：US10113596B2

公开(公告)日：2018-10-30

申请号：US15300701

申请日：2015-03-24

Applicant: DENSO CORPORATION

Inventor： Hiroshi Nakajima ,  Youhei Kushida ,  Kiyomi Okuda ,  Akira Kishibuchi ,  Toshihiro Hayashi

IPC: F16D13/76 ,  F16D27/06 ,  F16F15/121 ,  F16D3/78 ,  F16D9/00 ,  F16H7/08 ,  F16D13/40 ,  F16H55/36 ,  B60K25/02

Abstract: A power transmission device that transmits a rotational driving force outputted from a driving source to a target device to be driven includes: a driving rotor rotated by the rotational driving force; a driven rotor that rotates with a rotary shaft of the target device; and a connection member. The connection member has a plate shape extending perpendicular to the rotary shaft. The connection member is connected at least one of the driving rotor and the driven rotor, and is capable of connecting the driving rotor and the driven rotor to each other. The connection member has a through hole, and the driven rotor has an overlapping portion disposed overlapping with the through hole when viewed in the axial direction of the rotary shaft.