公开(公告)号：US20240266906A1

公开(公告)日：2024-08-08

申请号：US18569376

申请日：2022-06-02

Applicant: Hitachi Astemo, Ltd.

Inventor： Tatsuro KOBUNE ,  Hikaru MORITA ,  Takatoshi HATTORI

IPC: H02K5/22 ,  H02K15/00 ,  H02K15/14

CPC classification number: H02K5/225 ,  H02K15/0062 ,  H02K15/14 ,  H02K2203/09

Abstract: Cover-side terminals of a motor cover are electrically press-fitted over and fixed to motor terminals of a motor case at a first position being separate from a base portion by a first length in an extending direction of the motor terminals. Meanwhile, a fixing portion of the motor cover is press-fitted over and fixed to a protruding portion at a second position being separate from the base portion by a second length being different from the first length in the extending direction of the motor terminals of the motor case. In this case, for example, the second length is longer than the first length.

公开(公告)号：US20240157917A1

公开(公告)日：2024-05-16

申请号：US18281617

申请日：2021-10-15

Applicant: Hitachi Astemo, Ltd.

Inventor： Tatsuro KOBUNE ,  Norikazu MATSUZAKI ,  Masayuki KIKAWA

IPC: B60T8/171 ,  B60T8/172 ,  B60T13/74 ,  F16D65/18 ,  F16D121/24 ,  H02P3/04

CPC classification number: B60T8/171 ,  B60T8/172 ,  B60T13/746 ,  F16D65/18 ,  H02P3/04 ,  F16D2121/24

Abstract: A parking brake control apparatus (24) stops driving of an electric motor (7A) when a current value of the electric motor (7A) reaches a target current threshold value, when driving the electric motor (7A) to press brake pads (6C) against a disk rotor (4) and hold a braking force. The target current threshold value is a current value for stopping the driving of the electric motor (7A). The parking brake control apparatus (24) changes the target current threshold value according to a rotational acceleration of the electric motor (7A).

公开(公告)号：US20220073038A1

公开(公告)日：2022-03-10

申请号：US17417476

申请日：2019-12-18

Applicant: Hitachi Astemo, Ltd.

Inventor： Sota SUZUKI ,  Tatsuro KOBUNE ,  Wataru YOKOYAMA ,  Kenichiro MATSUBARA

IPC: B60T8/17 ,  F16D65/18 ,  B60T13/74 ,  B60T17/22 ,  H02P3/04

Abstract: An electric brake mechanism includes a piston (6D) propelled by a rotation-linear motion mechanism (8) driven by an electric motor (7A). The piston (6D) is configured to press brake pads (6C) against a disc rotor (4), and to hold the brake pads (6C) at a pressing position by stopping the electric motor (7A). A parking brake control device (24) is configured to determine, when a request (application command) to hold the brake pads (6C) is made, a judgment timing for judging whether to stop the electric motor (7A) based on a change trend of a current value of the electric motor (7A). When the judgment timing is reached, the parking brake control device (24) judges whether or not to stop the electric motor (7A).