Honda Giken Kogyo Kabushiki Kaisha

Sumitomo Electric Industries, Limited

Tetsuo Tsuchida

Tsutomu Hayashi

Takeshi Kawaguchi

Kanau Iwashita

Yoshiaki Sawano

Yukimasa Nishimoto

Hidetoshi Toyoda

Masahiro Morita

Masaru Fujisaki

Yoshinori Yamanoi

Yoichi Sasajima

Takao Yoshida

Tetsuo Mikami

Masaru Sasaguchi

Hirohisa Ito

Hiroshisa Ito

A front/rear interlocking brake system is provided wherein a hydraulic pressure is directly supplied through a lever hydraulic system and a circuit to front brakes. The front brake is provided with a secondary master cylinder for generating a hydraulic pressure due to a brake torque of the front brake. The secondary master cylinder is connected through a lever interlocking hydraulic system and a control valve to a rear brake. A hydraulic pressure is directly supplied from a primary master cylinder through a pedal hydraulic system to the rear brake. Accordingly, the front brakes and the rear brake can be interlockingly operated by operating the lever, and only the rear brake can be operated by operating the pedal.

Brake device for motorcycle

Links are provided for linking a brake caliper pivotally supported through a pin to a vehicle body. A master cylinder is fixed to the vehicle body and is constructed of a first link having one end pivotally supported through a pin to the brake caliper and the other end pivotally supported through a pin to an input member of the master cylinder. A second link is provided having one end pivotally supported through a pin to the vehicle body and the other end pivotally supported through a pin to the first link at an intermediate portion thereof. When the brake caliper is swung in a first direction by a brake reaction force received from a brake disc, the input member is upwardly driven through the first link and the second link, and the master cylinder is operated to generate a secondary brake hydraulic pressure.

Link between a motorcycle brake caliper and a master cylinder

A motorcycle braking system distributing liquid pressure to a first front brake, a second front brake and a rear brake includes a first master cylinder actuated by a front brake lever and a second master cylinder actuated by a back brake pedal. The first master cylinder is connected directly to the first front brake and the second front brake. The brake system also employs a pressure controller that distributes liquid pressure from the first and second master cylinders to the second front brake according to the liquid pressure from the second master cylinder. A secondary master cylinder supplies a secondary liquid pressure to the rear brake in response to actuation of the first front brake. The secondary liquid pressure supplied to the back brake is transformed by a pressure-transformer. Using these components, the braking system implements a braking control method that provides improved control of the motorcycle while braking.

Motorcycle braking system and method

A brake apparatus for motorcycles with a master cylinder connected directly to a front wheel brake cylinder and connected through pressure control valves to a rear wheel brake cylinder. An adjustment varies the ratios of application of pressures to front and rear brakes through variation in valve spring settings to accommodate variations in load. A sensing system may be employed to determine application of braking force to the front wheel. This system may take the form of a mechanical servo mounting the front brake calipers, a direct pressure application in the master cylinder or a transducer measuring brake pressure to the front wheel. When braking to the front wheel is sensed above a selected threshold, the ratio of brake pressure of the front to rear wheels is reduced. A orifice restriction associated with the pressure control valves reduces sensitivity to variation in braking due to valve action.

Motorcycle brake system having dual master cylinder proportioning

To prevent local abrasion of a lining of a brake pad when one of a plurality of pistons for pressing the lining against a disk plate is rendered operative, a lining 16b mounted on a back plate 16a of a brake pad 16 is separated into two, and a recessed portion 26 or a gap is formed between the two linings 16b in a corresponding relationship to the position of a central one 21 of three pistons 20, 21 and 22. When the central piston 21 is rendered operative, the operating force of the piston 21 is dispersed to the left and right by the recessed portion 26 or the gap to act upon a disk plate 18, and consequently, local abrasion of the lining 16b is prevented.

Disk brake apparatus for vehicle

In a braking system for a motorcycle, a brake includes a plurality of applicators which are respectively operated by hydraulic braking pressures fed from first and second actuators, and a common antilock modulator is provided for controlling and reducing the hydraulic braking pressures from the first and second actuators. This makes the braking system having antilock control function simplified in structure.

Braking system for motorcycle

A primary brake system operated by either one of a hand operated means and a foot operated system is mounted on one of the front and rear wheels, and a secondary brake system operated in response to the operation of the primary brake system is mounted on the other wheel. Consequently, it is possible to provide a braking-force distribution for the front and rear wheels with a predetermined common characteristic, leading to an improved brake feel. A braking-force control is provided for controlling the braking-force distribution to the front and rear wheels in accordance with the operating forces of a first input operated by the hand operated element and a second input operated by the foot operated element, so that an ideal distribution characteristic falls within a region between a first braking-force distribution characteristic for the front and rear wheels by the hand operated element and a second braking-force distribution characteristic for the wheels by the foot operated element, such region being a braking-force distribution characteristic region at a time when the hand and foot operated elements are operated simultaneously.

Braking system for motorcycle having apportioning control

A brake device for vehicles applying brake power to a wheel through actuation of a disc brake by an output hydraulic pressure from a master cylinder, wherein an inertial type wheel angular deceleration sensor driven by the wheel through a transmission device is incorporated in an antilock control unit adapted to control the output hydraulic pressure of the master cylinder, the disc brake and the transmission device are enclosed in an annular recess open to one side of the wheel, and a caliper of the brake and the antilock control unit are supported on a fixed panel disposed so as to close an opening of the annular recess.

Brake device for vehicles

A controller for a hydraulically operated braking system incorporates a flywheel apparatus arranged to sense the onset of a wheel-locking condition and to effectively control the operation of the braking system so as to prevent the occurrence of the wheel-locking condition. The flywheel is rotatably, and axially movably, supported with respect to an output shaft of the system in spaced relation therefrom so as to eliminate the effects of friction forces on system operation.

Acceleration sensor for vehicle wheel braking anti-lock controller

An antilock brake device for vehicles including a sensor for sensing the possibility of wheel lock during braking by means of overrunning rotation of a flywheel interlocked with the wheel to produce an output and a hydraulic controller for reducing the braking hydraulic pressure of the wheel brake upon reception of the output from the sensor and increasing the braking hydraulic pressure when the output from the sensor is eliminated. The flywheel and a transmission for transmitting the rotation of the wheel to the flywheel are arranged in the hollow portion of a hub of the wheel. Transmission mechanisms are employed to separate components within the hub to further reduce the overall size of the system. A variety of embodiments also disclose cooperation between front and rear brakes to improve braking response and efficiency.

Antilock brake device for vehicles

A brake device having an antilock controller comprising a hydraulic pump which is reciprocated through a cam by an output shaft responsive to rotation of a wheel to produce a hydraulic pressure for controlling a braking pressure of the wheel, and a sensor which senses, by the overrunning rotation of a flywheel, the situation that the locking of the wheel is restored when the wheel is braked, to produce a signal, wherein the cam of the hydraulic pump and the flywheel of the sensor are arranged adjacent to each other on the output shaft within a hub of the wheel.

In a vehicle having a wheel suspended on a body through a suspension device with a damping facility, a sensor having a flywheel and detecting a wheel angular deceleration is supported on the stationary supporting structure of the suspension device which consists of a vehicle body side member and a vehicle body, and a transmission device for connection between the wheel and a drive shaft leading to the sensor is so constructed as to absorb the vertical vibration transmitted from the wheel.

Apparatus for supporting and driving wheel angular deceleration sensor

A braking device for a vehicle comprises a brake for applying brake power to a wheel and an antilock control unit having an inertia type wheel angular deceleration sensor built therein which is driven by the wheel, the antilock control unit controlling the brake hydraulic pressure for the brake in accordance with the output of the sensor. In this braking device, the brake and the antilock control unit are disposed such that they stand opposite each other on the right and left sides of the wheel.

Braking device for vehicle

An angular deceleration sensor adapted for sensing by the overrunning of a flywheel an angular deceleration in excess of a predetermined value of a detected subject which rotates in a fixed direction. A clutch is interposed between the flywheel and a drive shaft for transmitting the rotation of the subject to the flywheel, the clutch being in the form of a unidirectional clutch which assumes a locked state when the drive shaft is in a drive position with respect to the flywheel.

Angular deceleration sensor

A brake device provided with an antilock controller which includes a sensor for sensing by the overrunning of a flywheel an abrupt deceleration of a wheel of the vehicle resulting from the braking action of a brake device, a modulator for controlling a braking pressure fed to the brake device in accordance with a signal from the sensor and a hydraulic pump driven by the wheel. The sensor and a transmission device are adapted to operatively connect the flywheel of the sensor to the wheel are housed in a closed chamber defined between a pair of hub end walls which are supported on an axle through bearings, and the flywheel is supported on the axle. The hydraulic pump, the modulator and a transmission device operatively connecting the hydraulic pump to the wheel are arranged externally of the closed chamber.

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Saitama, Japan

Tetsuo Tsuchida