Parking brake system
First Claim
Patent Images
1. A parking brake system for a vehicle comprising:
- a brake operating member providing manual operation of the parking brake system;
a drive source for automatically operating the parking brake system; and
a unidirectional connecting member interconnecting said brake operating member and said drive source,wherein said unidirectional connecting member permits transmission of power from said drive source to said brake operating member and prevents transmission of power from said brake operating member to said drive source,wherein said unidirectional connecting member is comprised of a first lock spring which is mounted between a drive roller connected to the drive source and a driven roller connected to the brake operating member to permit the relative rotation between both the rollers in one direction and wherein said parking brake system further includes a second lock spring for limiting the rotation of the drive roller in one direction, and a connection-releasing member for expanding the first lock spring to permit the rotation of the driven roller.
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Accused Products
Abstract
A ratchet wheel, connected to a motor through a worm gear and a worm wheel, is supported on a pedal shaft which pivotally supports a brake pedal. The ratchet wheel engages a ratchet member mounted on the brake pedal. When the brake pedal is depressed, the ratchet member rotates on the pedal shaft so that the brake pedal is turned with the ratchet wheel remaining stationary. When the motor is driven, the ratchet member is brought into engagement, so that the brake pedal is turned along with the ratchet wheel. When the ratchet member is operated by a release arm, the brake pedal is released from the ratchet wheel and returned to an original position.
18 Citations
10 Claims
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1. A parking brake system for a vehicle comprising:
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a brake operating member providing manual operation of the parking brake system; a drive source for automatically operating the parking brake system; and a unidirectional connecting member interconnecting said brake operating member and said drive source, wherein said unidirectional connecting member permits transmission of power from said drive source to said brake operating member and prevents transmission of power from said brake operating member to said drive source, wherein said unidirectional connecting member is comprised of a first lock spring which is mounted between a drive roller connected to the drive source and a driven roller connected to the brake operating member to permit the relative rotation between both the rollers in one direction and wherein said parking brake system further includes a second lock spring for limiting the rotation of the drive roller in one direction, and a connection-releasing member for expanding the first lock spring to permit the rotation of the driven roller. - View Dependent Claims (3, 4, 6, 7, 8, 9)
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2. A parking brake system for a vehicle comprising;
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a brake operating member providing manual operation of the parking brake system; a drive source for automatically operating the parking brake system; and a unidirectional connecting member interconnecting said brake operating member and said drive source, wherein said unidirectional connecting member permits transmission of power from said drive source to said brake operating member and prevents transmission of power from said brake operating member to said drive source, wherein said unidirectional connecting member is comprised of a first lock spring which is mounted between a drive roller connected to said drive source and a driven roller connected to said brake operating member to permit the relative rotation between both the rollers in one direction and wherein said parking brake system further includes a second lock spring for limiting the rotation of the driven roller in one direction, and a connection-releasing member for expanding the first lock spring and the second lock spring to permit the rotation of the driven roller. - View Dependent Claims (5, 10)
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Specification