US 6,397,982 B2 · Disc brake housing

Abstract

An annular disc brake assembly has a housing mounted to a vehicle and a rotor disk mounted to a wheel of the vehicle. A pair of annular brake shoes are in frictional engagement with the rotor disk during a brake action, and resiliently supported by the housing and a supportive structure of the vehicle, respectively. The housing includes an annular radial wall having an annular ridge on the inner surface to abut the brake shoe which is supported by the housing so that during the brake action uneven and various forces applied to the brake shoe will cause local portions of the brake shoe oscillating about the contact point. The oscillation will be damped by damping pads placed between the housing and the brake shoe. The housing has a plurality of axial link members extending from the annular radial wall. The axial link members include clip structure at each distal end for clipping onto the supportive structure of the vehicle. The housing used in the brake assembly improves the brake assembly regarding the reduction of vibration and brake squeal, and simplifies the assembling procedure.

Claims27

Dependent claims

A disc brake housing for a disc brake assembly for a vehicle wheel wherein the disc brake assembly includes first and second annular brake shoes, and an rotor disc co-axially mounted to the wheel and axially movable with respect to the wheel, during a braking action the second brake shoe being adapted to move axially towards the rotor disc and further presses the rotor disc against the first brake shoe, resulting in respective frictional engagement between the rotor disc and the first brake shoe, and between the rotor disc and the second brake shoe, the disc brake housing comprising:

an annular radial wall for resiliently supporting the first annular brake shoe to an inner edge thereof;
a plurality of link members extending axially from an external periphery of the annular radial wall for detachably connecting a support structure of the vehicle, and housing the rotor disc and the brake shoes;
and
an annular ridge raised from an inner surface of the annular radial wall to abut the first annular brake shoe so that uneven and variable forces applied to the first annular brake shoe from the rotor disc force local portions of the first annular brake shoe to oscillate about the ridge.

1 more element

A disc brake assembly for a vehicle wheel which includes first and second annular brake shoes;

an rotor disc having first and second annular radial planar friction surfaces substantially parallel to each other, the rotor disc being co-axially mounted to the wheel and axially movable with respect to the wheel;
means for restraining the first brake shoe from rotating with the rotor disc;
means for restraining the second brake shoe from rotating with the rotor disc;
and an annular fluid expandable bladder, whereby upon expansion of the bladder the second brake shoe moves axially towards the rotor disc and further presses the rotor disc against the first brake shoe, resulting in respective frictional engagement between the first friction surface of the rotor disc and the first brake shoe, and between the second friction surface of the rotor disc and the second brake shoe;
the disc brake assembly further comprising:
a housing having an annular radial wall operatively supporting the first annular brake shoe adjacent to the first friction surface of the rotor disc;
a radial support wall adapted to be mounted to a frame of the vehicle and operatively supporting the bladder and the second annular brake shoe adjacent to the second friction surface of the rotor disc;
the annular radial wall being axially spaced apart from and detachably connected to the radial support wall;
and
damping means between the annular radial wall and the first brake shoe for reducing vibration produced from the first brake shoe when the first brake shoe is frictionally engaged with the first friction surface of the rotor disc.

7 more elements

A disc brake assembly for a vehicle wheel which includes first and second annular brake shoes;

an rotor disc having first and second annular radial planar friction surfaces substantially parallel to each other, the rotor disc being co-axially mounted to the wheel and axially movable with respect to the wheel;
means for restraining the first brake shoe from rotating with the rotor disc;
means for restraining the second brake shoe from rotating with the rotor disc;
and an annular fluid expandable bladder extending between a radial support wall and the second brake shoe, whereby upon expansion of the bladder the second brake shoe moves axially towards the rotor disc and further presses the rotor disc against the first brake shoe, resulting in respective frictional engagement between the first friction surface of the rotor disc and the first brake shoe, and between the second friction surface of the rotor disc and the second brake shoe;
the disc brake assembly further comprising:
a housing having an annular radial wall operatively supporting a first annular brake shoe adjacent to the first friction surface of the rotor disc, and a plurality of axial link members integrally extending from the radial wall, circumferentially spaced apart from one another;
an annular radial support wall adapted to be mounted to a frame of the vehicle, the support wall detachably securing the link members and axially spaced apart from the annular radial wall, and operatively supporting the bladder and the second annular brake shoe adjacent to the second friction surface of the rotor disc;
and
clip means at a distal end of each of the link members to enable the link members to clip onto an external periphery of the annular radial support wall.

6 more elements

Dependencies are inferred from the claim text.

Disc brake housing

Life of this patent

Disc brake housing

Life of this patent

Abstract

Claims27