Honda Giken Kogyo Kabushiki Kaisha

Hidehiko Inoue

Tsutomu Hayashi

Masao Nishikawa

Nobuo Anno

Noriyuki Takahashi

Makoto Sato

Isamu Morita

Yuji Kishizawa

Takeo Ishihara

Yasuo Ohashi

Hiromitsu Miyahara

A braking system for a motorcycle employing a multipiston fluid cylinder arranged in series to provide stepped braking from a single input to both the front and rear wheels. Additionally, a proportional pressure reduction valve operates to reduce the proportional braking pressure to the rear wheel of the motorcycle above a threshold or break point pressure level. An anti-locking system is employed with the front braking system. This anti-locking mechanism includes a warning buzzer and light simultaneously activated and deactivated with the anti-locking mechanism. A control mechanism including a control rod having stepped surfaces is employed to increase the threshold pressure of the proportional pressure reduction valve. The control mechanism disables the warning buzzer and the anti-locking mechanism and generates a continuous warning light signal.

Fluid brake system for a motorcycle

A front wheel suspension assembly for a motorcycle includes parallel telescoping forks of the hydraulic shock absorber type which straddle the wheel and which are inclined in a forward direction. The bending moment imposed on the telescoping parts by this inclination is partly or fully opposed by a counter bending moment imposed by one or more springs positioned rearward of a vertical plane containing the wheel axis and below a bottom bridge joining the front fork tubes. The purpose is to reduce the frictional resistance between telescoping forks in their axial sliding motion. The springs apply the compensating bending moment between the telescoping parts.

Front fork construction for motorcycle

An improved engine supporting structure for a motorcycle wherein a power unit is constructed integrally of an engine, a crankcase and a transmission case and is subjected to pivotal motions with respect to the frame together with a rear wheel. The engine is so arranged that its main axis of inertia is substanially horizontal, and the engine constituting a part of the power unit is pivotally connected to the lower end of a link which in turn has its upper end pivotally connected to the frame. The link is so arranged that its upper and lower pivots are substantially in a vertical line, and the rear portion of the power unit supporting the rear wheel is connected to the frame through a shock absorber. In this manner, the transmission of engine vibrations to the frame is restricted, the following characteristics of the rear wheel in the longitudinal direction are improved, and the riding quality is improved.

Engine supporting structure for motorcycle

An improved vehicular anti-skid brake device in which a brake oil pressure generating device generates brake oil pressure in accordance with a braking operation input. A braking force applying device applies a braking force to wheels in response to the brake oil pressure generated in the brake oil pressure generating device. At the time of braking the wheels, a control device actuates immediately the brake oil pressure generating device so as to restrain generation of the brake oil pressure by the brake oil pressure generating device against the braking operation input when the braking force to the wheels by the braking force applying device is excessive. The anti-skid brake device of the present invention is high in reliability of operation, has a good response in braking sense, can overcome difficulty in mounting and arranging the device on the vehicle, simplifies an oil passage arrangement required for the anti-skid control. It can easily be applied to conventional general brake devices without considerable change in structure thereof.

Vehicular anti-skid brake device

A front wheel suspension assembly for a motorcycle includes parallel telescoping forks of the hydraulic shock absorber type which straddle the wheel and which are inclined in a forward direction. The bending moment imposed on the telescoping parts by this inclination is partly or fully opposed by a counter bending moment imposed by one or more springs positioned rearward of a vertical plane containing the wheel axis and below a bottom bridge joining the front fork tubes. The purpose is to reduce the frictional resistance between telescoping forks in their axial sliding motion. The springs apply the compensating bending moment between the telescoping parts, or between the lower telescoping fork parts and the frame of the motorcycle.

A motorcycle or the like is provided with parallel telescoping tubes forming part of an inclined front fork assembly straddling the front wheel. The wheel is mounted for rotation on said assembly about an axis spaced rearward of the telescoping tubes to reduce friction forces between them. The lower ends of the upper tubes are tapered to promote the formation of oil wedges for maintaining an oil film between the telescoping parts. Also, the fork assembly is mounted on the frame for pivotal movement about an inclined axis diverging with respect to a plane containing the axes of the telescoping tubes.

Telescopic front fork construction for motorcycle

A suspension device for use in a vehicle, adapted to be arranged between a wheel suspension member and the body structure of the vehicle and capable of increasing the spring rate of the device to a substantial extent in a relatively low load range so as to minimize the pitching and/or rolling motion of the vehicle while retaining its intrinsic pneumatic spring characteristics in the relatively high load range so as to bear a considerably heavy load imposed thereupon, for the purpose of providing improved running stability of the vehicle without impairing the riding comfort thereof. The device includes a telescopic shock absorber filled with hydraulic fluid, a spring unit having a pneumatic spring chamber containing air or gas under pressure and a hydraulic fluid chamber in communication with the interior of said shock absorber, both defined therein by means of an elastic diaphragm on the opposite sides of the latter, and a spring means such as an elastic rubber spring disposed within the hydraulic fluid chamber in facing relation with the diaphragm for resisting the inflation of the pneumatic spring chamber in response to extensive movement of the shock absorber beyond a definite length.

Growing community of inventors

Ooi, Japan

Hidehiko Inoue