公开(公告)号：US20220009463A1

公开(公告)日：2022-01-13

申请号：US17295171

申请日：2019-08-22

Applicant: Hitachi Astemo, Ltd.

Inventor： Yasushi KINOSHITA ,  Kengo SUZUKI ,  Atsushi ODAIRA ,  Haruhiko FUJITA

IPC: B60T13/74 ,  B60T17/22 ,  F16D55/226 ,  F16D66/00 ,  F16H25/22

Abstract: An object of the present invention is to provide an electric brake with excellent operability, in which a compact brake thrust detection sensor is installed. To achieve the object, the electric brake of the present invention includes a rotary shaft rotated by the rotational force, a piston axially moved by a translational force converted from rotation of the rotary shaft, a brake pad pressed against a disc in accompany with a translational motion of the piston, a thrust bearing which receives a thrust load applied to the rotary shaft, and a support member which axially supports the thrust bearing. The thrust bearing includes a first bearing washer which is in contact with the rotary shaft to receive the thrust load, and rotates integrally with the rotary shaft, a second bearing washer fixed to the support member, and multiple rolling elements held between the first bearing washer and the second bearing washer. The second bearing washer has its surface in contact with the support member provided with a supported portion that is in contact with the support member, and a non-supported portion that is not in contact with the support member. A strain sensor is disposed on the non-supported portion.

公开(公告)号：US20240141964A1

公开(公告)日：2024-05-02

申请号：US18278952

申请日：2022-02-28

Applicant: Hitachi Astemo, Ltd.

Inventor： Atsushi ODAIRA ,  Haruhiko FUJITA

IPC: F16D65/18

CPC classification number: F16D65/18 ,  F16D2121/24

Abstract: An electric brake apparatus includes a control unit connected to an electric motor, a first connector portion connected to the control unit and used for power feeding and input of one of redundant signals, a second connector portion connected to the control unit and used for power feeding and input of another of the redundant signals, and a third connector connected to the control unit and used for input of a signal related to a wheel speed. This allows providing redundancy for control associated with power feeding and rotation of the electric motor and also reducing noise in the input signal of the wheel speed.