Bendix Europe Services Techniques

Bendix France

Jean-Louis Magnaval

Jean-Charles Maligne

Alain Thioux

Patrice Moinard

A brake assembly with hydraulic boosting, comprises at least one disk brake having a fixed part (1), a caliper (3), a brake motor (82) actuated by a fluid under pressure, a master cylinder (48) and a device (15) for recovering the energy dissipated during braking. The device (15) comprises at least one energy-recovering cylinder (21) with its piston (19) which is associated with the fixed part (1) and with the caliper (3) and the working chamber of which is connected fluidly to the brake motor (82). A hydraulic booster/limiter is connected between the energy-recovering cylinder (15) and the brake motor (82), the hydraulic booster/limiter being controlled by the pressure of the fluid generated in the master cylinder (48).

Brake assembly with hydraulic boosting

The invention concerns an electromechanical control having a centrifugal structure comprising a shaft (22) driven in rotation by an electric motor (20) and defining an axis, at least two flyweights (38) capable of moving under the effect of a centrifugal force between a plate (34) and a disk (32), the plate (34) being able to be driven in rotation by the shaft, and a wedge device (12). According to the invention, the shaft (22) is mounted movably in axial translation to drive in translation the wedge device (12), and the plate (34) is axially fixed whereas the disk (32), which solidly fixed to an axial sleeve (30) forming, with the end (24) of the shaft (22), a lockable screw-nut assembly, is capable of axial translation and can be driven in rotation by the shaft (22), the radial position of the flyweights (38) determining the separation of the disk (32) and the plate (34). Application to the braking of vehicles.

Electromechanical control having a centrifugal structure

The invention relates to an automatically adjustable spacer for a drum brake, comprising essentially a first part (10) bearing at one of its ends on a first shoe (3), a second part (16) bearing at the opposite end on the second shoe (2), the first and second parts (10, 16) being mounted slidably longitudinally relative to one another, a locking element (30), at least part of the periphery of which has a toothing, mounted movably on one of the first and second parts and capable of meshing with a corresponding toothing (28) provided opposite it on part of the periphery of the other of the first and second parts, so as to define a device for the automatic extension of the spacer as a function of the wear of the friction elements. The locking element (30) which is mounted movably in terms of rotation about a pin (32) and pin being mounted movably in terms of longitudinal translational motion in a slot provided in the part (10), is in form of a toothed cam the rotational movement of which results in an increase of the distance between the pin (32) and the meshing zone of the toothings, and a spring imparts a rotational movement to the locking element as soon as the toothing no longer mesh with one another.

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Neuilly-Plaisance, France

Jean-Louis Magnaval