公开(公告)号：US10851842B2

公开(公告)日：2020-12-01

申请号：US16295324

申请日：2019-03-07

Applicant: DENSO CORPORATION

Inventor： Toshihiro Hayashi ,  Hiroki Nagahashi ,  Kiyoshi Kurohata ,  Toshihiro Konishi ,  Shigeyoshi Sakuraba ,  Takayuki Hirose

IPC: F16D3/68 ,  F16H55/36 ,  F16D27/112

Abstract: A power transmission device includes an electromagnet, a rotor, an armature and a hub that couples the armature to a shaft of a driving target device. The hub includes an outer hub coupled to the armature, an inner hub coupled to the shaft, and an elastic member interposed between the outer hub and the inner hub. An outer peripheral side of the inner hub includes plural extending parts each extending outward in a radial direction. An inner peripheral side of the outer hub includes an inner peripheral side wall that overlaps with the extending parts in a rotational direction and surrounds the extending parts. The elastic member is disposed in an unbonded state with respect to at least one of the inner hub and the outer hub between the outer peripheral side of the inner hub and the inner peripheral side of the outer hub.

公开(公告)号：US11286997B2

公开(公告)日：2022-03-29

申请号：US16581880

申请日：2019-09-25

Applicant: DENSO CORPORATION

Inventor： Toshihiro Konishi ,  Shigeyoshi Sakuraba ,  Takayuki Hirose ,  Toshihiro Hayashi ,  Kazuma Tachibana ,  Hiroki Nagahashi

IPC: F16D27/112 ,  F16D27/14 ,  F16D27/00

Abstract: An armature includes an inner plate located on an inner side of a groove and an outer plate located on an outer side of the groove. The hub includes: an outer hub; an inner hub that is coupled to a shaft; and a primary elastic member that is interposed between the inner hub and the outer hub and is configured to exert an elastic force to the outer hub in a direction away from a rotor. The outer hub includes an outer side coupling portion that is opposed to the outer plate and the inner plate and is coupled to the outer plate. The hub includes a secondary elastic member that is clamped between: the outer plate and the inner plate located on one side of the secondary elastic member; and the outer side coupling portion located on another side of the secondary elastic member.

公开(公告)号：US09850963B2

公开(公告)日：2017-12-26

申请号：US15113851

申请日：2015-02-20

Applicant: DENSO CORPORATION

Inventor： Toshihiro Konishi ,  Yoshinori Fukumura ,  Yasuo Tabuchi

IPC: F16D27/14 ,  F16D27/10 ,  F16D27/112 ,  F16D3/76 ,  F16D13/76 ,  H01F27/40 ,  F16D27/00 ,  F16D121/20

CPC classification number: F16D27/14 ,  F16D3/76 ,  F16D13/76 ,  F16D27/112 ,  F16D2027/005 ,  F16D2121/20 ,  F16D2250/00 ,  H01F27/402

Abstract: A coil housing has an inner ring, which is shaped into an annular form and is placed on an inner side of an electromagnetic coil in a radial direction of a rotational axis. A thermal fuse is placed on an inner side of a coil inner peripheral end of the electromagnetic coil in the radial direction, so that the thermal fuse can be placed in such a manner that the thermal fuse does not limit a length of the electromagnetic coil in a direction of the rotational axis by using a radial thickness of the inner ring that is indispensable as a part of a structure of a magnetic circuit. Thus, it is possible to sufficiently limit occurrence of limiting of a size of the electromagnetic coil that is caused by the placement of the thermal fuse.

公开(公告)号：US11519466B2

公开(公告)日：2022-12-06

申请号：US17071051

申请日：2020-10-15

Applicant: DENSO CORPORATION

Inventor： Shigeyoshi Sakuraba ,  Toshihiro Hayashi ,  Kiyoshi Kurohata ,  Toshihiro Konishi ,  Kazuma Tachibana

IPC: F16D27/112 ,  F16D27/14 ,  F16D121/20 ,  F16D127/02

Abstract: An armature is configured to come into contact with an actuator due to magnetic attraction force. An outer plate is fixed to an armature, the outer plate being located on an opposite side of the armature from the actuator, the outer plate being configured to rotate together with the armature. An inner hub is located between the armature and the outer plate to be movable in a direction along a rotation axis, the inner hub being fixed to a driven device. A rubber member is disposed between the inner hub and the outer plate to give an urging force to the inner hub and the outer plate in a direction away from each other. This electromagnetic clutch is configured such that the urging force of the rubber member non-linearly increases as the actuator and the armature approach each other due to the magnetic attraction force.

公开(公告)号：US11353068B2

公开(公告)日：2022-06-07

申请号：US16545528

申请日：2019-08-20

Applicant: DENSO CORPORATION

Inventor： Toshihiro Konishi ,  Shigeyoshi Sakuraba ,  Takayuki Hirose ,  Toshihiro Hayashi

IPC: F16D27/112 ,  F16D9/02 ,  F16D27/14

Abstract: A power transmission device includes an electromagnet, a rotor, an armature and a hub. The hub couples the armature to a shaft of a drive-subject device. The hub includes: an outer hub that is coupled to the armature; a boss portion that is coupled to the shaft; an inner side plate-shaped portion that extends from the boss portion toward a radially outer side; and an inner plate that is placed between the outer hub and the inner side plate-shaped portion. The inner side plate-shaped portion and the inner plate are formed integrally in one piece. At least one of the inner side plate-shaped portion and the inner plate is formed by a member that is configured to deform or melt with heat generated by friction between the rotor and the armature when the shaft of the drive-subject device is locked at a time of energizing the electromagnet.