摘要:
The invention relates to a parking brake for a vehicle, comprising a handle (2) which can be displaced in relation to a mounting (6), a coupling unit (3), which tenses a brake cable (4) when the handle (2) is displaced, and a fixing device (17) for fixing the handle (2) in a fixed position. The aim of the invention is to provide a parking brake that can convert a pulling force on a handle into a tensing of the brake cable using constructionally compact, economical means. To this end, the handle (2) can be pulled axially away from the mounting (6) by a guide (5, 7), and a conversion unit (8) is connected to the mounting (6), said unit converting the axial displacement of a part that is associated with the handle (2) into a tensing of the brake cable (4).
摘要:
Disclosed is an electromechanically actuated parking brake for motor vehicles that is designed as a drum brake of the ‘Duo-Servo’ type, including a floatingly supported expanding lock which is operable by an electromechanical actuator arranged on a wheel carrier, and which is essentially composed of a threaded-nut/spindle assembly, the threaded nut of which is driven by the electromechanical actuator, and of two thrust members. At least one spring element is provided in the flux of force between the threaded-nut/spindle assembly and at least one of the thrust members. This provision allows compensating losses of application force, while the set application force is maintained in a reliable manner.
摘要:
The present invention relates to an electromechanically operated disc brake for motor vehicles, which consists of a floating-type brake caliper as well as an actuating unit arranged on the caliper. The actuating unit exhibits an electric motor which adjusts an actuating element via a reducing gear. The actuating element in turn causes one of two friction linings provided in the brake caliper in a displaceable manner to be brought into engagement with a brake disc. In order to be able to maintain high clamping forces with very low electric power, the present invention proposes that means (20 or 21,22) be provided to prevent reverse rotation of the rotor (10) of the electric motor (6) when the current supplied to the electric motor (6) is switched off after said electric motor (6) was activated. At the same time, this measure minimizes heating of the electric motor.
摘要:
A vacuum brake power booster for automotive vehicles having control valve which is operable, irrespective of an actuating rod displacing a valve piston (9), by an electromagnet which actuates a third sealing seat thereby ventilating the working chamber. To minimize the independent actuating force generated by the electromagnet the electromagnet, of the present invention, is rigidly connected to the valve piston, and is arranged to be slidable in the control housing so that the third sealing seat is synchronously movable with the valve piston.
摘要:
A brake caliper of a disc brake includes a housing with a bore, in which a piston is arranged in an axially displaceable fashion, a shaft for actuation, which is mounted in a rotatable and axially displaceable fashion, two ramp elements being rotatable in relation to each other, a readjusting device with a spindle, and an axial bearing that is active between the shaft and the spindle. A generic brake caliper of a disc brake includes components having a construction to withstand stress so that they are exposed to even, low stress without detrimental tension peaks. A toothing is provided on a circumference of the spindle, and a form-fit accommodation means for the toothing is provided. The accommodation means are unrotatably connected to the housing and secure the spindle against twisting. A calotte arrangement is also provided as an axial bearing, which comprises a calotte shell with a concavely curved surface and a calotte pivot with a convexly curved surface.
摘要:
A spot-type disc brake with a housing comprising a housing bridge, with at least one housing leg having an actuating assembly unit comprising an actuator unit and a component movable along an axis of movement. At least one brake shoe is arranged at the component and is slidably supported on at least one support. The brake shoe is braced with the support against an abutment surface by means of a hold-down spring.The abutment surface of the hold-down spring is arranged non-parallel to the axis of movement. Thereby, not only a radial preloading force FR is produced, but also a force component FX normal thereto, which assists the retracting movement of the brake shoe from the brake disc, thus improving the clearance behavior.
摘要翻译:一种具有壳体的点式盘式制动器,包括壳体桥,其中至少一个壳体腿具有致动组件单元,该致动组件单元包括致动器单元和沿着运动轴线移动的部件。 至少一个制动瓦被布置在该部件处,并且可滑动地支撑在至少一个支撑件上。 制动蹄通过压紧弹簧支撑抵靠邻接表面。 压紧弹簧的邻接表面布置成不平行于运动轴线。 因此,不仅产生径向预紧力F R R,而且产生与其正常的力分量F X X,这有助于制动蹄从制动盘回缩运动 ,从而提高清除行为。
摘要:
A hydraulic vehicle brake with a parking brake device, in particular for motor vehicles, includes a brake housing in which a hydraulic service pressure chamber is delimited by a brake piston, wherein hydraulic pressure fluid can be applied to the hydraulic service pressure chamber for carrying out service brake operations so that the brake piston is actuatable along a longitudinal piston axis in order to achieve a braking effect. The parking brake device acts on the brake piston with an actuating device, which actuates a rolling-element ramp-type gear with an electromechanical actuator.In order to achieve a higher rate of overall efficiency as well as a reduced electric energy consumption, a two-step gear is interposed between the electromechanical actuator (7) and the actuating device (4), wherein the first gear step (11, 21, 31) on the inlet side is connected to an output shaft (8) of the electromechanical actuator (7) and the second gear step (12, 22, 32) on the outlet side is connected to the rolling-element ramp-type gear (1, 2, 3).
摘要:
A hydraulic vehicle brake includes a brake housing in which a hydraulic working pressure chamber is delimited by a brake piston, wherein the brake piston, in the applied condition, can be locked by means of a locking device, locking thereof being allowed by a relative movement of a force-transmitting element, wherein an energy accumulator cooperating with the brake piston is provided, which is comprised of a lockable accumulator pressure chamber, an accumulator piston delimiting the accumulator pressure chamber, and at least one spring element being supported on the accumulator piston. To perform a parking brake operation, the locking device is activated in that the force-transmitting element after a hydraulic pressure buildup is arrested by an electromagnetic or electromechanical actuator so that a relative movement between the accumulator pressure chamber and the force-transmitting element is rendered possible.
摘要:
A device and method of adjusting a variable boosting factor of a brake power booster is provided. A variable boosting factor is achieved by constructively defining a basic boosting factor of a brake power booster that may be overridden by electronic independent activation. In a preferred embodiment, the driver's pedal force is measured either directly at the brake pedal, or after the pedal force is boosted by the brake pedal on the piston rod of the brake power booster by means of a force. A nominal pressure specification is generated from this quantity by way of a variable amplifier and an electrical signal-adapting unit. The braking pressure which is produced from the driver's pedal force and the basic boosting factor of the brake power booster can be overridden by this independent activation.
摘要:
A vacuum brake power booster for automotive vehicles includes a booster housing whose interior is subdivided into a vacuum chamber and a working chamber by a moveable wall. A control housing carries the moveable wall and accommodates a control valve which controls a pressure differential acting upon the moveable wall. The control valve has at least two sealing seats cooperating with an elastic valve member and is operable by an actuating rod. One of the sealing seats is operable, irrespective of the actuating rod, by an electromagnet whose armature is in force-transmitting interaction with one of the sealing seats. An electrical switching apparatus is also included, the control signals of which influence the current supply of the electromagnet thereby enabling its deactivation. The switching apparatus are operable by a relative movement between a valve piston and the control housing.