Electromechanical wheel brake device
AssigneeRobert Bosch GmbH
InventorFrank Schumann
Life of this patent
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Abstract
The invention relates to an electromechanical wheel brake device with a brake caliper that is embodied of one piece with a gear housing in which a planetary roller screw drive for pressing frictional brake linings against a brake disk and a bevel gear pair for driving the planetary roller screw drive to rotate are accommodated. In order to keep a ring gear free of a force that acts axially on a nut of the planetary roller screw drive when the frictional brake linings are pressed against the brake disk, the device affixes a ring gear of the bevel gear pair in a rotationally fixed and axially mobile manner to the nut, for example by means of a multi-groove profile, and supporting the bevel gear with a separate axial bearing in the rigidly embodied gear housing.
Claims23
An electromechanical wheel brake device with an electric motor, which comprises an angular gear that is driven by the electric motor, a rotation/translation conversion gear (20) that has a drive element, said drive element is driven to rotate by the angular gear, and has a driven element, and with a frictional/brake lining that is pressed by the driven element of the rotation/translation conversion gear against a brake body that is fixed against relative rotation with a vehicle wheel, the angular gear is a bevel gear pair (22) with a bevel gear (58) that is driven by the electric motor (24) and a ring gear (56) is connected to a rationally fixed, axially mobile manner to the drive element (40) of the rotation/translation conversion gear (20), and that the ring gear (56) has a separate bearing (36, 46, 66) that is rigidly connected to a bearing (61) of the bevel gear (58) that belongs to the bevel gear pair (22).
Dependencies are inferred from the claim text.