Fully lined hydraulically actuated disc brakes
OwnerHermann Klaueinventor
Life of this patent
Estimating the term…
Abstract
A hydraulically actuated fully lined disc brake assembly for braking a wheel of a motor vehicle has a brake housing which is provided with a gap which is open on its radially exterior side. Brake discs which fully line the brake housing are disposed in the gap and are supported on a removable bracket which is fixed against rotation. The brake discs are fixed against rotation with the wheel but are free to move axially. A hydraulic actuating mechanism is disposed in the gap between the brake discs and is designed to apply pressure against the discs at their radial center point to actuate the brake discs at their most efficient radii. The brake housing is supported on the wheel and can be removed for replacement of the brake discs after the wheel has been removed without disassembly of the brake actuating mechanism.
Claims13
In a brake assembly for a vehicle wheel comprising a brake housing rotatable with the wheel and having separate wheel side and second annular members axially spaced from each other to form a channel-like gap which is open at its radially exterior side, said annular members having facing internal sides which provide braking surfaces, braking discs having friction linings disposed in the gap and facing the braking surfaces, and means for hydraulically actuating the braking discs disposed in the gap between the braking discs, the improvement which comprises
- a. support means for the braking discs and actuating means fixed against rotation with the wheel having at least one pair of diametrically opposite arms which extend over the open side of the gap and support the braking discs and actuating means in the gap, said arms supporting the braking discs against circumferential movement but permitting free axial movement thereof and supporting the brake actuating means freely in the gap without transmission of torque thereby;
- b. said means for hydraulically actuating the braking discs being mounted on the said arms between the braking discs and comprising annular members which are axially movable relative to each other under fluid pressure to press the braking discs against the braking surfaces, said annular members being disposed where they contact the braking discs at the radial centers thereof;
- c. means for securing the said second annular member for rotation with the wheel;
- and
- d. means for securing the wheel side annular member to the second annular member whereby upon removal of the wheel and said wheel side member, the braking discs may be removed without dismantling the actuation unit.
A hydraulically actuated fully lined disc brake comprising a brake housing having a wheel side member and an axle side member spaced to provide a channel-like gap which is open on its radially exterior side, said annular members having internal surfaces to be contacted by brake disc linings for braking the wheel, braking discs in the gap having friction linings facing the said internal surfaces of the annular members, a brake bracket having arms which extend across the gap and support the braking discs in the gap against circumferential movement but permit the discs to move axially, said arms absorbing torque, a brake disc actuating means disposed in the gap between the brake discs and supported freely in the gap by the arms of the brake bracket without transmission of torque thereby said actuating means being axially movable and comprising a hydraulically actuated ring cylinder and ring piston or two differential pistons, the hydraulically caused forces of the actuating means being active at the efficient radius of the friction linings, said wheel side member being removable from the axle side member without dismantling the actuation unit to change the braking discs after the wheel has been removed.
A hydraulically actuated fully lined disc brake assembly for braking a wheel of a motor vehicle comprising
- a brake housing having opposite radially extending annular members spaced axially apart to provide an annular gap therebetween which is open on its radial exterior side, said members having inner surfaces which act as braking surfaces, and means for securing said housing to the wheel so the housing is supported solely by the wheel,
- a brake support bracket fixed against rotation with the wheel and comprising an arm which is removably attached thereto and extends axially over the said gap,
- brake discs having friction linings facing the said braking surfaces, means carried by the brake discs which secure the brake discs to the said arm when the arm is disposed over the gap to fix the brake discs against rotation with the wheel but permit movement of the brake discs axially,
- a means disposed between the brake discs for hydraulically actuating the brake discs to move them against the said braking surfaces comprising a ring cylinder member having a surface facing a first brake disc and an axially extending bore open at its opposite surface, a ring piston slidably disposed in the bore with one end facing the second brake discs, means for sealing the interfaces between the ring piston and walls of the bore against loss of fluid under pressure, and means to introduce fluid under pressure into the ring cylinder to move the ring piston in the bore and to press the piston against the radial center of said second brake disc and said facing surface of the ring cylinder against the radical center of said first brake disc and thereby press the friction linings against the braking surfaces, whereby the brake discs are activated at their most efficient radii, said brake housing being removable from the assembly after removing the arm from over the gap and removing the wheel, whereby the brake discs can be replaced without dismantling the means for hydraulically actuating the brake discs, said brake support bracket supporting the means for actuating the brake discs freely in the gap without transmission of torque thereby.
Dependencies are inferred from the claim text.