Abstract:
Eine selbstverstärkende Scheibenbremse, mit einem an einem ortsfesten Bremsträger (8) gehaltenen Bremssattel (1), einem zuspannseitigen (2) und einem reaktionsseitigen Bremsbelag, die gegen eine Bremsscheibe pressbar sind, einer eine Selbstverstärkungseinrichtung aufweisende Zuspanneinrichtung und einer Nachstellvorrichtung zum Nachstellen von Belag- und/oder Bremsscheibenverschleiß, wobei die Selbstverstärkungseinrichtung mindestens einen Druckstempel (4) aufweist, der über eine Spreizlagerung (10) stirnseitig an dem zuspannseitigen Bremsbelag (2) anliegt und der mit seinem dem Bremsbelag (2) zugewandten Endbereich in einer im Bremsträger (8) beweglich gehaltenen Führungsplatte (9) festgelegt ist, ist so ausgebildet, dass die Spreizlagerung (10) in Nichtfunktionsstellung der Selbstverstärkungseinrichtung von einer Dichtungsanordnung eingeschlossen ist.
Abstract:
The invention relates to an electromechanical brake (10) for motor vehicles which has an electromotive bidirectional longitudinally moveable, selflocking-free spindle (19) for pressing at least one brake pad (12.2) against a rotating friction element (13) in a feed stroke and for releasing the brake pad (12.2) in a return stroke. In addition, the brake (10) has a plate-shaped coupling link (44) situated between the spindle (19) and the brake pad (12.2). The coupling link (44) is in direct contact with the spindle (19) and is supported on the brake pad (12.2) such that it can slide perpendicular in relation to the longitudinal axis of the spindle. As a result, the perpendicular forces which impair the lack of friction of the spindle (19) are significantly avoided. Said forces can occur when the brake pad (12.2) is placed against the friction element (13). The electromechanical brake (10) can be used in motor vehicles, especially passenger cars.
Abstract:
Electrically operated braking system with a motor-driven disc brake including an electric motor (212) for braking an automotive vehicle wheel, and a motor control device (100) for controlling the electric motor, the disc brake further including a disc rotor (11; 212) having a friction surface (12), a friction pad (14a; 14b) movable for contact with the friction surface to restrict rotation of the disc rotor, a pad support mechanism (152) for supporting the friction pad movably in a direction intersecting the friction surface, a pad pressing mechanism (202, 212, 214) including the electric motor and a pressing member (202; 216), the electric motor producing a drive force for moving the pressing member to force the friction pad against the disc rotor, and a self-servo mechanism (220) for providing a self-servo effect of boosting a friction force generated between the friction surface and the friction pad, on the basis of the friction force.
Abstract:
The present invention relates to a wheel electro-mechanical brake system (10) comprising a spindle mechanism (18) which is mounted in a floating calliper (12) and is driven by an electric motor (30) for pressing a first friction pad (14) against the surface of a brake disc (16) and for pressing a second friction pad (14) against the other surface of said disc (16) by a reaction force through said floating calliper (12). In order to remove the wheel brake system (10) upon failure, the spindle mechanism (18) of the present invention is not self-blocking. According to this invention, a spindle nut (20) and a threaded spindle (22) are rotatingly mounted and the threaded spindle is rotationally blocked by a removable rotation-blocking device (46) through which said threaded spindle (22) is connected by a form-connection (54, 56) so as to be rotationally blocked and capable of axial displacement. In case of failure, the rotation blocking device (46) is dismounted and the friction pad (14) forcibly pressed against the brake disc (16) displaces the threaded spindle (22) away from said disc (16), wherein said threaded spindle (22) then rotates and moves away from the disc (16).
Abstract:
An electric actuator (13) comprises a housing (17) which contains a screw mechanism (11) and an electric motor (5) which is driveably connected to the screw mechanism (11) which provides a linear movement in response to a rotational movement of the electric motor (5), said screw mechanism (11) comprising a screw (12) and a nut (33) one of which is supported rotatably with respect to the housing (7) by means of an angular contact ball bearing (31), said screw (12) by means of an intermediate coupling element (18) engaging an actuating member (16) for transferring axial forces. The intermediate coupling element (18) engages the screw (12) by means of an axial connection (53, 54) which allows radial movements.
Abstract:
The invention concerns a motor vehicle disc brake which can be actuated electromechanically and comprises a floating calliper and an actuating unit disposed thereon. The actuating unit comprises an electric motor which, with the interposition of a reduction gear, adjusts an actuating element by means of which one of two friction linings displaceably disposed in the brake calliper are brought into engagement with a brake disc. According to the invention, in order to set the desired braking force individually, in particular when the disc brake is used on a motor vehicle, a force-measuring arrangement (23) is disposed in the power flow between the calliper (1) and the actuating unit (2). The output signals from the force-measuring arrangement (23) can be fed to a control circuit (26) which influences the voltage and/or the current fed to the electric motor (6).
Abstract:
A brake (10) capable of functioning as a disk brake and parking brake having engaged and disengaged modes of operation comprising: a piston rod (30) movable with the disk brake piston (14) having a threaded portion (40), a nut (60) rotatably movable on the threaded portion (40) relative to a first stop (52); a pressurizing device (80, 82, 84; 92) for pressurizing the fluid chamber (20) to move the piston (14) and piston rod (30) to respective engaged positions, and a motor (66, 68) for rotating the nut (60) in one of a) synchronism with pressurizing the fluid chamber and b) subsequent thereto so that the nut moves along the threaded portion (40) into a contracting position with the first stop (52) for preventing the piston rod (30) from moving from its engaged position to achieve the parking brake function.
Abstract:
A self-servo disc brake, with a brake caliper (1) held on a fixed brake carrier (8), an active-side (2) and a reaction-side brake pad, which may be pressed against a brake disc, an actuating device with a self-servo device and an adjuster device for compensating pad and/or disc wear, wherein the self-servo device has at least one pressure pin (4), in contact on the front face with the active-side pad (2) by means of a split bearing (10) and fixed by the end thereof facing the brake pad (2) to a guide plate (9) movably held in the brake carrier (8), designed such that the split bearing (10) is enclosed by a seal arrangement when the self-servo device is not working.
Abstract:
The invention relates to a self-boosting disk brake in which an actuating force, which is applied by an actuator, is boosted by means of an application device which is arranged between the actuator and a brake lining and has a self-boosting device, having the following features: a brake caliper or frame, the application device for applying at least one brake lining unit (38), and at least one electromotive drive as an actuator for actuating the application device, wherein the application device also has two or more brake plungers (5, 6), and wherein the two brake plungers (5, 6) are connected to one another by means of a connecting plate (40), wherein at least one or more ramp arrangements (44) is/are formed in the region adjacent to the brake plungers (5, 6) between the brake lining unit and the connecting plate (40).