ELECTRICALLY ACTUATED FRICTION BRAKE

摘要

To reduce the attainable actuation times of an electrically actuated friction brake and simultaneously keep the friction brake inexpensive, a second transmission element (8) with an elevation curve (17) is proposed in which a coupling element (15) is provided on a first transmission element (5), and on the coupling element (15) there is arranged a follower element (14) which follows the elevation curve (17) under the action of the electric actuator (12) for the actuation of the first transmission element (5).

主权项

1. An electrically actuated friction brake with a brake pad (3) actuated by an actuation device (10), wherein the actuation device (10) is driven by an electrical actuator (12) and comprises a first transmission element (5) that is connected to the brake pad (3) and the actuation device (10) rotates the first transmission element (5) about a rotational angle (α) for a brake action to achieve a pad pressing force (FN) and the first transmission element (5) requires an input torque (TE) depending on the rotational angle (α) for achieving the pad pressing force (FN) characterized in that a second transmission element (8) is provided with an elevation curve (17) and a coupling element (15) is provided on the first transmission element (5), wherein a follower element (14) is arranged on the coupling element (15) that follows the elevation curve (17) under the action of the electrical actuator (12) for actuating the first transmission element (5), wherein the second transmission element (8) provides the input torque (TE) for the first transmission element (5) and in that the input torques (TE) of the first transmission element (5) over the rotational angle (α) for different wear states of the brake pad (3) result in an envelope curve (4c) and the input torque (TE) provided by the second transmission element (8) over the rotational angle (α) covers the range of the envelope curve.