摘要:
Die Erfindung betrifft eine elektromechanische Bremsvorrichtung mit einem über einen Antrieb (5) verlagerbaren Bremskolben (8), wobei der Antrieb (5) die Rotationsbewegung einer Rotorwelle (2) eines Elektromotors (1) in eine translatorische Bewegung umsetzt, sowie mit einer mechanisch betätigbaren Zusatzbremse (12). Um eine Zusatzbremse (12) zu schaffen, die einfach aufgebaut ist, wird vorgeschlagen, dass ein Bremspedal (14) und der Bremskolbenantrieb (5) die Zusatzbremse (12) bildend derart mechanisch miteinander gekoppelt sind, dass bei Betätigung des Bremspedals (14) die Zusatzbremse (12) den Bremskolben (8) ausschließlich dann in Bremsrichtung verlagert, wenn der Bremskolbenantrieb (5) elektrisch nicht aktiviert ist.
摘要:
The invention relates to an electromechanical disc brake (10). To achieve a brake booster action, the disc brake (10) is configured with a multiple brake cylinder (24), which can be displaced in the secant direction of a brake disc (20) and has a friction brake lining piston (22), which can be displaced transversally in relation to the brake disc (20), in addition to two brake booster pistons (26), located opposite one another, which can be displaced parallel to the brake disc (20). Said booster pistons rest on fixed abutments (36), for example on the inner face of a brake calliper (12) of the disc brake (10). To actuate the disc brake (10), the multiple brake cylinder (24) is displaced in the rotational direction (46) of the brake disc (20), which causes the front brake booster piston (26), (viewed from the direction of displacement) to retract into the brake cylinder (24), pressing the friction brake lining (18) against the brake disc (20) by means of the friction brake lining piston (22). A friction force exerted by the rotating brake disc (20) on the friction brake lining (18) presses the multiple brake cylinder (24) further in the direction of displacement, thus intensifying a pressure exerted by the brake booster piston (26) on the friction brake lining (22), which in turn increases the braking force.
摘要:
The invention relates to an actuating unit for an electromechanically operable disc brake for motor vehicles. The actuating unit is comprised of a driving unit (1) or an electric motor (11), and an actuating element (15) by means of which one (4) of two friction linings (4, 5), said linings being arranged in a brake caliper such that they can be displaced, is brought into contact with a brake disc (6). The actuating unit additionally comprises a first and second reduction gears (2, 3). In order to decouple the second reduction gear (3) from the first reduction gear (2), the invention provides that the electric motor (11), the first reduction gear (2) and the second reduction gear (3) are designed as at least two components which can be handled separately.
摘要:
The wheel brake actuator (4) comprises a brake piston (20) which is driven in the direction of a brake disk. Said brake piston engages two brake linings (23, 24) with a brake disk (3)or disengages them from said brake disk. The brake piston (20) is moved by an electric motor (40) with a brake application force that is lower than a predetermined value (F1). Once the predetermined value (F1) of the brake application force is reached a piezoelectric element (26) forces the brake piston against the brake linings (23, 24) with a brake application force that is higher than the predetermined value.
摘要:
The disk brake has a floating brake calliper (s) and a holder (h). Said holder (h) has at least one caliper guide pin (f1) along which the floating caliper (s) is displaceably guided (s). An actuating unit of the disk brake is mounted on the floating caliper (s), said actuating unit having an electromotor with a rotor (r), an actuating element for displacing a brake lining (bb1) in relation to the floating caliper (s) and a means for converting the rotary movement of the rotor (r) into a linear movement of the actuating element in relation to the floating caliper (s). The rotor (r) of the electromotor is at least partially coaxially mounted about the caliper guiding pin (f1).
摘要:
The invention relates to an electromechanical wheel-brake device (10) for an automobile, comprising an electromotor (34) for driving two planetary gears (16, 18) which are connected in series, and which activate the wheel-brake device (10) through a roller thread drive (74, 82, 84). According to the invention, the planetary gears (16, 18) are provided with a first electromagnetic coupling (38, 40, 52) with which a sun wheel (22) of the second planetary gear (18) can be stopped or rotationally fixed to a sun wheel (20) of the first planetary gear (16), and a second electromagnetic coupling (44, 46, 48, 54), with which an internal-geared wheel (30) of the second planetary gear (18) can be stopped or rotationally fixed to an internal-geared wheel (28) of the first planetary gear (16). The invention has the advantage that by using the electromotor (34) and switching the two couplings (38, 40, 52; 44, 46, 48, 54), the roller screw drive (74, 82, 84) can be driven rapidly in order to overcome an air gap, slowly and with considerable reduction in order to then apply a considerable braking force and rapidly for releasing without changing the direction of rotation of the electromotor (34). For use as a parking brake, both couplings (38, 40, 52; 44, 46, 48, 54) are switched to currentless, hereby blocking the second planetary gear (18) and maintaining an applied braking force when the electromotor (34) is currentless.
摘要:
An electrically-operated disc brake assembly for vehicles is disclosed in which a friction member (12) is adapted to be applied to a rotatable brake disc by a brake-applying means including an electric motor (11), and transmission means in the form of a linear actuator (10) comprising a screw device adapted to apply an axially-directed brake-applying force to the friction member in response to operation of the motor. The screw device (10) comprises inner and outer co-operating screw-threaded members (14, 15), and one of the members is adapted to co-operate with the armature (15) of the electric motor.
摘要:
A ball bearing mechanical disc brake (10) includes a pad wear compensating apparatus using an adjustment knob (106, 264) and a rotary to linear linkage between the adjustment knob (106, 264) and a brake pad assembly (72, 74) to advance and retract the brake pad assembly as dictated by wear. A cable guide system for maintaining axial tension in a flexible cable utilizes a straight length of axially and radially rigid tubing (70). A retaining structure for a friction pad and plate assembly utilizes a pad retention clip (85) defining an elongate track and a complimentary retention tab (370) on a plate of the friction pad and plate assembly (72, 74) configured to snap fit within the pad retention clip (85). The plate has a handle (381) which is textured (395, 396, 397) to provide for enhanced gripping of the handle. A caliper drive of the ball bearing mechanical disc brake has a plurality of ramps (162, 200) between first (158) and second (178) cams of the drive mechanism with each ramp having a sidewall defining a radially stable path for a ball bearing (176) residing within the ramp. A spring tension adjuster for the ball bearing mechanical disc brake includes a coil spring (228) having a first end ((230) attached to a pivot arm and a second end (232) fixed relative to the first end. One of the first and second ends is moveable independent of the lever arm to adjust and maintain a select spring tension.