摘要:
The invention relates to a drum brake having an electromechanical actuating device. The invention proposes to convert a rotating drive movement of the actuating device by use of a gearwheel and two toothed racks. The toothed racks mesh with the gearwheel on opposite sides thereof and are driven in opposite directions by the gearwheel into translational movements for pressing attached brake shoes against a brake drum. The toothed racks are configured in such a way that the two toothed racks have a common line of action, with resulting symmetrical actuating forces. According to one embodiment of the invention, the lines of action of the toothed racks run tangentially with respect to the gearwheel.
摘要:
The invention relates to a drum brake having an electromechanical actuating device. The invention proposes to convert a rotating drive movement of the actuating device by use of a gearwheel and two toothed racks. The toothed racks mesh with the gearwheel on opposite sides thereof and are driven in opposite directions by the gearwheel into translational movements for pressing attached brake shoes against a brake drum. The toothed racks are configured in such a way that the two toothed racks have a common line of action, with resulting symmetrical actuating forces. According to one embodiment of the invention, the lines of action of the toothed racks run tangentially with respect to the gearwheel.
摘要:
The present invention relates to a self-amplifying electromechanical partial lining disc brake, having a ramp mechanism as a self-amplification device. According to the invention, a rack for driving a friction brake pad is situated between roller elements of the ramp mechanism, particularly at a geometrical centroid of an imaginary surface defined by the roller elements. As a result a load is distributed to the roller elements in a more uniform fashion and the pressing force of the friction brake pad against a brake disc when the partial lining disc brake is actuated is distributed more uniformly and counteracts irregular pad wear.
摘要:
The invention relates to a selective freewheeling mechanism for developing an electromechanical vehicle brake (service brake) into a parking brake. The freewheeling mechanism according to the invention has an outer ring and a locking element cage which are configured as an electric motor with a rotor and a stator. The rotor and stator can be swiveled in relation to each other when a coil is supplied with current. Due to a symmetric design, the freewheeling mechanism is advantageously insensitive to acceleration forces.
摘要:
The invention relates to a self-reinforcing electromechanical disc brake having a brake caliper produced by means of shaping, in one piece with a housing for electromechanical parts of an actuating device of the disc brake, with the housing forming a dimensionally stable hollow body. It is possible in this way to produce a bending-resistant and torsionally rigid brake caliper with a low wall thickness.
摘要:
An electromechanical disk brake having a self-boosting by means of a ramp mechanism with an encapsulation to protect moving parts of the brake against becoming soiled. The friction brake lining has a three-point support with three roller bodies and thus is braced in a statically defined way, and a contate gear mechanism for actuating the disk brake, which is not vulnerable to positional tolerances and does not cause any axial forces.
摘要:
The invention relates to a self-boosting electromechanical friction brake, having a friction brake lining which is displaceable for actuation in the direction of rotation of a brake disk and is braced on a ramp, via a roller body. When the friction brake is actuated, a rotating brake disk exerts a frictional force on the friction brake lining pressed against it, which urges the friction brake lining in the direction of an increasingly narrower gap between the ramp and the brake disk and as a result exerts a contact pressure in addition to a contact pressure exerted by an actuation device. The self-boosting action is attained as a result. To prevent the roller body from sliding on the ramp, the invention provides a positive controller, for instance with a gear wheel on the roller body that meshes with racks.
摘要:
The invention relates to an electromechanical friction brake having an electromechanical actuating device including an electric motor and a toothed gear assembly with which a friction brake lining can be pressed against a brake body for braking. Gear wheels of the assembly have sets of helical teeth braced with rotary bearings against the resultant axial forces. Sets of helical teeth have the advantage of better synchronism and of being capable of transmitting greater torque. Moreover, if the friction brake is used as a parking brake, an axial force effected by the set of helical teeth prevents occurrences of microscopic slippage in a locking device with a clamping action and thus prevents unintended automatic release of the locking device.
摘要:
The invention relates to a self-reinforcing, in particular electromechanical disk brake having a wedge mechanism as the self-boosting device, for example. The invention proposes that the actuating device be attached to a separate holder, which does not have forces or torques of the wedge mechanism applied thereto.
摘要:
A self-boosting electromechanical friction brake for a motor vehicle in which, with an electromechanical actuator, a friction brake lining can be pressed against a brake disk, and the friction brake lining is braced in the brake caliper via a wedge mechanism, which effects a self boosting. A friction brake lining which is pressed by the actuator has with a lower coefficient of friction, and in particular with less relative fluctuation in the coefficient of friction, than another friction brake lining positioned fixedly in the brake caliper. An operation-dictated fluctuation in the coefficient of friction and thus a change in the self boosting is reduced, and as a result the disk brake, with a low coefficient of friction, can be actuated with less actuation force and less actuation energy.