Disc brake with automatic adjustment

Details Disc brake with automatic adjustment Disc brake with automatic adjustment

1986-09-15

1987-04-28

Halvosa, George E. A.

Brakes

Wheel

Axially movable brake element or housing therefor

188196D, 192111A, F16D 6556

Patent

active

046606840

ABSTRACT:
The subject of the invention is a disc brake with automatic adjustment of the type incorporating a caliper (10) mounted to slide on a fixed support by way of at least one axial pin, a brake motor (34) acting directly on a first friction element (26) and as a result of reaction via the caliper (10) on a second friction element (30). The brake motor (34) incorporates a mechanical control (48, 50, 54) acting on a hydraulic control piston (36) via an automatic-adjustment device. The automatic-adjustment device is formed by a screw (68) -and-nut (88) system of reversible pitch, which is actuated by the piston (36) beyond a predetermined stroke of the latter. According to the invention, a monitoring piston (80) immobilizes a sleeve (114) fixed in rotation to the nut (88), when the hydraulic control pressure reaches a predetermined value. The invention is used for the braking of motor vehicles.

REFERENCES:
patent: 3610373 (1971-10-01), Burnett
patent: 3878923 (1975-04-01), Farr
patent: 4014415 (1977-03-01), Pickel
patent: 4056173 (1977-11-01), Farr
patent: 4246985 (1981-01-01), Shimizu et al.

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