Nissin Kogyo Kabushiki Kaisha

Nisshin Kogyo Kabushiki Kaisha

Honda Giken Kogyo Kabushiki Kaisha

Masayuki Seki

Takeshi Kawaguchi

Isao Matsuno

Mitsutoyo Mizusawa

Kazuo Sunohara

A master cylinder apparatus for a vehicle is adapted to be attached to a bar type steering handle. This master cylinder apparatus comprises a master cylinder attached directly or via a bracket to the bar type steering handle, an operating level pivoted on the bracket or a lever bracket of the master cylinder by means of a support shaft, an adjust bolt provided thrustable forward and backward to the operating lever, and a push rod having one end abutting on the rear end of a piston in the master cylinder and the other end pivoted on a free end of the adjust bolt. The forward/backward thrusting movement of the adjust bolt alters the distance between the support shaft and the point of action of the operating lever to the push rod, thereby changing the lever ratio of the operating lever to provide the operational feeling desired by a rider.

Master cylinder with adjustable leverage

A disc brake arrangement for vehicles comprises a disc rotatable with a wheel, a pair of friction pads disposed on both sides of the disc and movable along the axis of the disc, a caliper including a bridge portion disposed across the disc and an actuating device for engaging the friction pads with the disc, and a pad spring including two sets of pad-engaging portions for retaining the friction pads independently of each other in the radial direction of the disc under a given load and a joining portion for the connection of one set of pad-engaging portions with the other set of pad-engaging portions. The caliper is supported by a bracket in such a manner that it is slidable toward the axis of the disc. The caliper further includes an operable portion with a built-in cylinder in which is slidably housed a piston for engaging one friction pad with one side of the disc and a reaction force portion for engaging the other friction pad with the other side of the disc by the movement of the caliper.

Disc brake with a pad retaining spring

A disc brake having a caliper assembly support bracket and caliper assembly arranged with the caliper assembly slidably mounted in a U-shaped mounting socket to slide perpendicular to the braking surfaces of the brake disc. Brake pads extend between mounting faces of the socket on either side of the brake disc in such a way that the braking forces are resisted by the sliding engagement of the brake pads on the mounting faces. The interface width of the pads is increased to give better torsional resistance to the braking forces and hard stainless steel liners are disclosed for the mounting faces to extend the life of the support bracket.

Disc brake system

A negative pressure type booster arrangement comprises a pair of booster shells divided by a booster piston disposed therein for reciprocating movement into a constantly negative pressure chamber and a variable pressure chamber. The second chamber is always put in interchangeable communication with the first chamber via a control valve mechanism. An input rod is retractively connected to the booster piston, and is also connected to the valve control mechanism for permitting the booster piston to follow advancement of the input rod due to a difference in air pressure between both chambers. An input transmitting lever is mounted on the rear end of the input rod. A first arm is provided for supporting an operating lever extending successively from the booster shells and for pivotally supporting one end of the input transmitting lever, and a second arm is provided for supporting an operating wire.

Negative pressure type booster arrangement

A disc brake including a rotatable disc, a bracket having a pair of limbs and firmly attachable to a vehicle body portion in straddling relation to the disc, and a brake caliper mounted on the bracket, supporting a pair of friction pads on the opposite sides of the disc and having an actuating mechanism operative to press the friction pads against the opposite faces of the disc. The bracket limbs are formed thereon with torque-bearing surfaces which face the adjacent, trailing end faces of the respective friction pads which surfaces are covered with a single protecting plate. The bracket is formed along the top edges of the torque-bearing surfaces with a detent shoulder and in these surfaces at points downwardly spaced a substantial distance from the top edges thereof with a pair of detent holes. The protecting plate is formed on its back with at least one upper detent lug engageable on the detent shoulder and a pair of lower detent lugs engageable in the detent holes. The upper and lower detent lugs cooperate to securely hold the protecting plate in place on the bracket with resilient retention forces acting in two different directions substantially normal to each other.

Disc brake for vehicular use

An automated braking-gap adjuster system for mechanical drum brakes includes back plate, a pair of brake shoes having one end pivotally supported on the back plate, a cam member interposed between the other free ends of the brake shoes and adapted to be rotated by a brake arm and a wedge adjuster having its tapered cam surface slidingly abutting directly or indirectly upon the brake shoes. The wedge adjuster is disposed in the cam member such that it is rotatable with the cam member and slidable in the direction extending at right angles with the expanding direction of the brake shoes. The adjuster system also includes an adjusting rod abutting upon the wedge adjuster and threadedly connected to the cam member and an adjusting gear engaged with the adjusting rod and rotated to extend threadedly the adjusting rod, so that the wedge adjuster is urged to thereby expand the brake shoes.

Automated braking-gap adjuster system for mechanical drum brake

An automatic adjusting device in a disc brake for adjusting a clearance between a brake disc and a friction pad. A fixed pin is axially disposed within a hydraulic cylinder, and a regulating plate frictionally fitted over, the fixed pin is connected to the piston through a return spring having a given deformation allowance. The fixed pin, the regulating plate and the return spring cooperate to automatically move the piston backward at all times in a given amount and accurately. The amount of backward movement of the piston is sufficiently obtained by selection of a predetermined deformation allowance of the return spring, thus automatically and sufficiently obtaining a clearance between the brake disc and the friction pad.

Automatic adjusting device in a disc brake

A bracket of simplified, generally rectilinear form carries a pair of slide pins, on which the brake caliper is slidably mounted, at locations substantially aligned with each other radially of the brake disc and on that side of the brake caliper on which the rotating disc leaves the caliper behind. Use of such bracket enables substantial reduction in size and weight of the whole brake assembly. One of the slide pins located relatively close to the axis of the brake disc is removable and an ample working space is obtainable for exchange of the brake pads by swinging the caliper radially outwardly of the disc about the axis of the other slide pin. The brake pads are slidably mounted on a pair of hanger pins removably fitted to the caliper and normally held in place thereon by simple retainer means.

Disc brake assembly for vehicle use

A caliper supporting device in which a caliper is connected to a bracket through a first slide pin and a second slide pin so that the caliper arranged so as to sit astride of a part of the brake disc may be moved in a direction of a rotating axis of the brake disc. A resilient grommet for resiliently supporting the second slide pin only lengthwise thereof is mounted in a supporting hole in the form of an elongated hole. The second slide pin is directly brought into contact with a side wall of the supporting hole by a braking torque acting on the caliper.

Growing community of inventors

Nagano, Japan

Masayuki Seki