Electric brake device
First Claim
Patent Images
1. An electric brake device comprising:
- an electric motor;
a braking force application mechanism configured to apply a braking force on a vehicle wheel in dependence on the output of the electric motor;
a lock mechanism configured to assume one of a locked condition, in which the braking force applied by the braking force application mechanism is prevented from being relieved, and an unlocked condition, in which the braking force is permitted to be relieved;
a temperature sensor configured to measure an ambient temperature of a vehicle, in which the electric brake device is provided, or a temperature of the electric brake device; and
a freezing preventive power supply unit configured to initiate supply of an electric power to the electric motor or a drive source of the lock mechanism while the lock member is maintained at the locked condition in the event that while the braking force application mechanism applies the braking force and the lock mechanism is held in the locked condition without releasing the braking force application mechanism, the temperature sensor detects a preset temperature of the electric brake device immediately before freezing.
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Abstract
An electric brake device includes an electric motor, a braking force application mechanism, a lock mechanism, a temperature sensor for measuring an ambient temperature of a vehicle in which the electric brake device is provided, and a freezing preventive power supply unit. The freezing preventive power supply unit initiates the supply of an electric power to the electric motor or a drive source of the lock mechanism in the event that while the braking force application mechanism applies a braking force and the lock mechanism is held in a locked condition, the temperature sensor detects a preset temperature of the electric brake device immediately before freezing.
9 Citations
15 Claims
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1. An electric brake device comprising:
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an electric motor; a braking force application mechanism configured to apply a braking force on a vehicle wheel in dependence on the output of the electric motor; a lock mechanism configured to assume one of a locked condition, in which the braking force applied by the braking force application mechanism is prevented from being relieved, and an unlocked condition, in which the braking force is permitted to be relieved; a temperature sensor configured to measure an ambient temperature of a vehicle, in which the electric brake device is provided, or a temperature of the electric brake device; and a freezing preventive power supply unit configured to initiate supply of an electric power to the electric motor or a drive source of the lock mechanism while the lock member is maintained at the locked condition in the event that while the braking force application mechanism applies the braking force and the lock mechanism is held in the locked condition without releasing the braking force application mechanism, the temperature sensor detects a preset temperature of the electric brake device immediately before freezing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. A vehicle equipped with an electric brake device, the electric brake device comprising:
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an electric motor; a braking force application mechanism configured to apply a braking force on a vehicle wheel in dependence on the output of the electric motor; a lock mechanism configured to assume one of a locked condition, in which the braking force applied by the braking force application mechanism is prevented from being relieved, and an unlocked condition, in which the braking force is permitted to be relieved; a temperature sensor configured to measure an ambient temperature of the vehicle, in which the electric brake device is provided, or a temperature of the electric brake device; a starting operation detection unit configured to detect an incipient event occurring prior to a starting operation of the vehicle; and a freezing preventive power supply unit configured to initiate supply of an electric power to the electric motor or the drive source of the lock mechanism in the event that while the braking force application mechanism applies the braking force and the lock mechanism is held in the locked condition, the temperature sensor detects a preset temperature of the electric brake device immediately before freezing, and the starting operation detection unit detects the incipient event prior to the starting operation of the vehicle. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification