Granted Patent B2

US 12,583,428 · App. 17/910,164 · Granted Mar 24, 2026

Inventors: Daichi Nomura (Hitachinaka, JP); Takuya Usui (Hitachinaka, JP)

Assignee: HITACHI ASTEMO, LTD.

B60T13/746B60T17/22F16D65/18F16D66/00H02K7/102F16D2121/24F16D2125/48F16D2125/50

Abstract

Claims (7)

1 . An electric brake apparatus comprising:

an electric motor including driving circuits;

a brake mechanism configured to press a braking member against a braking target member based on driving of the electric motor; and

a control device configured to control the driving of the electric motor,

wherein the control device is configured to supply power to a part of the driving circuits when all of the driving circuits are operating normally such that a gradient of a change in a current of the electric motor with respect to a thrust force for generating a braking force increases to detect contact between the braking member and the braking target member based on the change in the current of the electric motor.

2 . The electric brake apparatus according to claim 1 , wherein the control device is configured to supply power to only one of the driving circuits when all of the driving circuits are operating normally such that the gradient of the change in the current of the electric motor with respect to the thrust force for generating the braking force increases to detect contact between the braking member and the braking target member based on the change in the current of the electric motor.

3 . The electric brake apparatus according to claim 2 , wherein the electric motor has double windings.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (15)