Electric parking brake device
AssigneeHitachi Astemo, Ltd.
InventorsKoji Usui, Sandip Purane, Hiromu Narukawa, Takeshi Sakaguchi, Masato Uno
Life of this patent
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Abstract
An electric parking brake device is associated with a service brake configured to generate a brake force in accordance with an operation input of a vehicle user, and configured to enable a parking brake configured to generate a brake force with a function of an electric actuator having operation controlled by a control unit. The control unit is configured to: (i) start to count in response to an end of detection of the service brake by a service brake detector; and (ii) stop operation of the control unit itself after an elapse of a first predetermined time from the start of the count.
Claims8
An electric parking brake device which is associated with a service brake configured to generate a brake force in accordance with an operation input of a vehicle user, and which is configured to enable a parking brake configured to generate a brake force with a function of an electric actuator having operation controlled by a control unit, the electric parking brake device comprising:
- a service brake detector connected to the control unit and configured to detect whether or not the service brake has been applied after completion of application operation of the electric actuator,
- wherein the control unit is configured to:
- start to count in response to an end of detection of the service brake by the service brake detector;
- stop operation of the control unit itself after an elapse of a first predetermined time from the start of the count;
- reset the count in response to the detection of application of the service brake by the service brake detector in the middle of time passage by the count and start recount;
- and
- stop the operation of the control unit itself after an elapse of a second predetermined time from the start of the recount.
Dependencies are inferred from the claim text.