Abstract: Provided is a disk brake in which a rotation control part for controlling relative rotation of a cartridge and a cylinder of a parking brake mechanism is formed at the cartridge and includes convex parts having curved surfaces and concave parts formed at the cylinder and having curved surfaces, and a spacer formed of stainless steel, resiliently fitted into an inner circumference of the cylinder and including arc part having the same shape as the concave parts is disposed between the convex parts and the concave parts.

Abstract: The invention relates to a brake device for braking a moving brake body (2) by means of pressing a brake element (3, 4) onto the brake body (2), wherein a conversion device (7) is provided for converting a rotational movement of a brake drive shaft (9) into a translational movement of the brake element (4) in the direction of the brake body (2), wherein a rotary percussion mechanism (8) is connected between the brake drive shaft (9) and the conversion device (7).

Abstract: A combined vehicle brake which has a hydraulically actuable service brake and an electromechanically actuable parking brake device, a hydraulic service pressure space being delimited in a brake housing by a brake piston which can be acted upon by hydraulic pressure medium in order to execute service braking operations, so that the brake piston can be actuated along a piston longitudinal axis in order to achieve a braking action, and the parking brake device acting on the brake piston by a gear, in that the gear converts the rotational movement of an electromechanical actuator into a translational movement and causes an actuation of the brake piston in order to execute parking braking operations and holds the said brake piston in the actuated position, the gear having a threaded spindle and a threaded nut which are in contact with one another via a plurality of rolling bodies.

Abstract: A ball screw which has a threaded nut arranged on a threaded spindle, a helical ball channel in which balls are arranged delimited by ball grooves of the threaded spindle and the threaded nut, a ball cage which receives the balls and a spring element which bears with one end against the threaded nut and with another end against the ball cage. The spring element is arranged axially adjacent to the ball cage in an annular gap delimited by the threaded nut and the threaded spindle.

Abstract: The invention relates to an electric parking brake, comprising a motor-gearing unit (2) with a drive output shaft (3), wherein the motor-gearing unit (2) generates a rotation of the drive output shaft (3), and comprising a spindle device (4) having a spindle (5) and a nut (6), wherein the spindle device (4) converts the rotation of the drive output shaft (3) into an axial movement of the nut (6) in the axial direction (X-X), wherein the spindle (5) is connected in a positively locking manner to the drive output shaft (3), the spindle (5) is centered on the drive output shaft (3), and the spindle is mounted in a brake caliper (7).

Abstract: Disclosed herein is an electromechanical brake system includes a base carrier provided with a pair of pad plates for application of pressure to a disc, a caliper housing supported by the base carrier to be movable forward and backward to apply pressure to the pad plates, a pressing member including a ball nut installed at the caliper housing to convert rotational motion into rectilinear motion to apply pressure to the pad plates and a ball screw coupled to the ball nut, a force sensor installed at the ball nut to sense load produced by the ball nut, a motor to produce rotational force to operate the pressing member, and a speed reducer connected to a rotating shaft of the motor to transfer driving force to the pressing member, wherein the speed reducer may be adapted to change a reduction ratio depending on presence of load sensed by the force sensor.

Abstract: A combined vehicle brake including a hydraulically actuated service brake and an electromechanically actuated parking brake device, a hydraulic operating pressure chamber in a brake housing being defined by a brake piston, which for performing service braking actions can be acted upon by hydraulic pressure fluid, so that the brake piston can be actuated along a piston longitudinal axis in order to produce a braking action, and the parking brake device acting on the brake piston by way of a transmission that translates the rotary motion of an electromechanical actuator into a translational motion and actuates the brake piston to perform parking brake actions and to keep it in the actuated position. Also disclosed is a transmission for translating a rotary motion into a translational motion by way of a screw spindle and a spindle nut, which are in contact with one another by way of multiple rolling elements.

Abstract: A braking device, in particular for a motor vehicle, which has a brake disk, a brake caliper fitting around the brake disk, and two brake pads, which rest against the brake disk for the purpose of braking. One of the brake pads can be moved by a motor-driven ball screw which has a threaded spindle and a threaded nut. The ball screw is accommodated within the brake caliper. The threaded nut is connected to a piston which has the brake pad and which is seated on the threaded nut in such a way that it can be tilted relative to the threaded nut, and/or wherein the threaded spindle is mounted on the brake caliper in such a way that it can be tilted relative to the brake caliper.

Abstract: In an electric linear motion actuator, planetary rollers 7 rotatably supported on their radially inner surfaces by respective support pins 6b are radially inwardly biased by radially compressible ring springs 18 enveloping the support pins 6b, thereby biasing and pressing the respective planetary rollers 7 against the radially outer surface of a rotary shaft 4. Thus, it is possible to stably transmit torque of the rotary shaft 4 to the respective planetary rollers 7 without applying a preload to the planetary rollers 7 with a negative gap between the radially outer surface of the rotary shaft 4 and the radially inner surface of the outer ring member 5.

Abstract: In an electric linear motion actuator for transmitting torque of a rotary shaft (4) to planetary rollers (7) and thus to a linearly driven output member constituted by an outer race member (5), axial movement of a carrier (6) supporting the planetary rollers (7) is restricted, and the outer race member (5) is axially slidably fitted in a radially inner surface of a cylindrical portion (1a) of a housing (1) and is rotationally fixedly coupled to an object to be driven via keys (25) The planetary rollers (7) have their radially inner surfaces rotatably supported on respective support pins (6c) of the carrier (6), and are radially inwardly biased by radial compression ring springs (21) wound around the support pins (6c) so as to envelop the support pins. The planetary rollers (7) are thus pressed against the radially outer surface of the rotary shaft (4).

Abstract: A system and method for the automatic control of wheel brake-slip in a motor vehicle with an electric drive (2), including the following steps: detecting a brake signal (14) by means of a slip control device (9), at which point the slip control device (9) generates an electric drive signal (15) and a friction brake signal (16) for the automatic control of a predetermined slip value of a wheel (1) of the motor vehicle, transmitting the electric drive signal (15) to an electric drive control device (6) and transmitting the friction brake signal (16) to a friction brake control device (12), at which point a friction brake control device (12) activates a friction brake (10) of the wheel (1) according to the friction brake control signal (16) to generate friction brake signal (16) to generate friction brake torque and an electric drive control device (6) activates electric drive (2) according to electric drive signal (15) to generate electric drive torque.

Abstract: A brake actuator has a motor that provides input rotation in first and second directions. A reducer couples to the motor and reduces the input rotation into an output rotation to be applied to a brake screw of a progressive cavity pump drive. A sensor measures rotational speed of the drive shaft. In manual operation, an operator can view an indication of the rotational speed and can manually operate the motor accordingly to control rotation of the shaft. In automated operation, a controller automatically controls the motor based on the rotational speed measured by the sensor. The controller can also use a torque sensor to detect the torque applied to the brake screw, a displacement sensor to detect displacement of the brake screw, and/or a current sensor to detect the current consumption of the motor.

Abstract: An electro-hydraulic brake system for a vehicle can include at least one hydraulic piston that exerts a force on a brake pad in a direction away from a brake disk and opposite to a force exerted, e.g., by a spring, on the brake pad in a direction toward the disk. A hydraulic pressure actuator can in one embodiment actuate the hydraulic piston to hold the brake in a disengaged position. A controller can in one embodiment actuate the hydraulic pressure actuator to advance the brake pad into engagement with the disk to exert a braking force based on a brake command signal, and can in one embodiment actuate the hydraulic pressure actuator to retract the brake pad from engagement with the disk upon receipt of a brake release signal. In one embodiment, the brake pad can move into engagement with the brake disk when an emergency (e.g., a loss of power or hydraulic pressure) occurs.

Abstract: An electronic brake device for use with a wheel of a bicycle provides, among other features, wireless, remote disengagement of a wheel brake. A brake coupled to a housing is movable between an engaged position and a disengaged position. The housing includes a receiver configured to receive a command signal, and a processor operative to identify the received command signal. If the command signal is identified as a first command signal, the processor outputs a first control signal. An electric motor is operatively coupled to the brake to selectively move the brake from the engaged position in which the wheel of the bicycle is being braked to the disengaged position in which the wheel of the bicycle is free of any brake contact in response to the first control signal. Measured movement of the brakes between fully braked or fully disengaged positions are possible in the disclosed arrangement.

Abstract: An aircraft wheel brake assembly has a housing for attachment to the landing gear of an aircraft, a friction plate in non-rotational sliding engagement with the housing, an actuated plate for non-rotational sliding engagement with an aircraft wheel, an aircraft brake actuator comprising, a first shaft for connection to a drive source, the first shaft defining a first axis, and, a second shaft for connection to, and actuation of, the brake assembly, the second shaft defining a second axis substantially perpendicular to the first axis, in which the first shaft and second shaft are connected in driving engagement by a ball-worm gear.

Abstract: The invention relates to an electromechanical friction brake, for example in the form of a disc brake having an electromechanical actuation device. The electric motor of the actuation device presses a frictional brake lining against a brake disc by means of a reduction gearbox and a ball ramp mechanism. The actuation device is supported by a spring washer that is pretensioned so strongly that when the disc brake is released it acts on a segment with a falling spring characteristic; that is, a spring force exerted by the spring washer on the frictional brake lining increases with increasing tension of the disc brake.

Abstract: A procedure for actuating a parking brake is described, the parking brake comprising a brake piston which is received in a hydraulic chamber and is displaceable within the hydraulic chamber by means of a hydraulic actuator on the one hand and a mechanical actuator on the other. During operation of the parking brake the mechanical actuator is activated in a first step in order to displace the brake piston in the hydraulic chamber in such a way that a volume of a hydraulic fluid contained in the hydraulic chamber is increased. At a subsequent time the hydraulic actuator is activated in order to build up or increase a clamping force of the parking brake. The hydraulically generated or increased clamping force is then maintained by means of the mechanical actuator.

Abstract: The cartridge (22) comprises a body (24), a rotary control plate (28) driving a push plate (30) in a translational movement, elastic means (38) of compressing the push plate (30) towards the control plate (28), and a cage (40) for holding the elastic means (38). The body (24) comprises a projection (42) for attaching the cage (40), collaborating with an attachment orifice (46) formed in an axial tab (44) of the cage (40). The cage (40) is capable of a rotational movement between an attachment position in which the attachment orifice (46) collaborates with the projection (42), and a release position in which the cage (40) is not attached to the body (24). The body (24) comprises a first limit stop (50) that limits the rotation of the cage (40) with which the tab (44) collaborates in the release position. The body (24) comprises a ramp (60), adjacent to the first limit stop (50). In the release position (40), the tab (44) rests radially against the projection (42) and the ramp (60).

Abstract: Provided is an electric brake capable of accurately estimating the brake pad temperature and securing a sufficient braking force and response. An electric brake has a disc rotor rotating with a wheel, an actuator for rectilinearly actuating a piston in the axial direction of the disc rotor by using an electric motor, a drive controller for controlling the drive of the actuator, a brake pad pressed by the piston to give a frictional resistance to the disc rotor in the direction of rotation, and a braking start position detector for detecting a braking start position of the piston where the disc rotor is brought into contact with the brake pad. The drive controller stores the braking start position detected by the braking start position detector as the maximum braking start position. When the braking start position shifts in the pressing force-increasing direction, the drive controller updates the value stored as the maximum braking-start position.

Abstract: A disc brake apparatus including a disc brake having a parking brake mechanism operated by an electric motor as a drive source to mechanically hold a piston in a braking position even after the hydraulic pressure is released; and a controller for supplying a predetermined amount of hydraulic pressure from a hydraulic control unit to caliper caliper, based on a parking-brake indicating signal from a parking brake switch and for operating the parking brake mechanism. In a case in which a brake pedal is being operated when a parking-brake indicating signal is input, the parking brake mechanism is operated in a state in which a hydraulic pressure in the caliper is at a predetermined pressure, after the operation of the brake pedal is finished, so as to reduce a hydraulic pressure required for a release of a brake pedal.

Abstract: An electromechanical linear-motion actuator includes a rotary shaft, a stationary outer race member, and planetary rollers between the rotary shaft and the outer race member to rotate about their own axes and revolve around the rotary shaft axis. A helical rib is on the radially inner surface of the outer race member or the radially outer surface of the rotary shaft. A helical groove or circumferential grooves are formed in a radially outer surface of each of the planetary rollers in which the helical rib is engaged. A planetary carrier axially faces the planetary rollers, and thrust ball bearings are between the planetary carrier and the respective planetary rollers 16 for preventing rotation of the respective planetary rollers 16 from being transmitted to the planetary carrier 17. Each of the thrust ball bearings comprises a raceway formed on an axial end surface of the corresponding planetary roller.

Abstract: Disclosed herein is a disk brake for vehicles including a disk rotated together with a wheel of a vehicle, a pair of friction pads disposed at both sides of the disk opposite to each other, and a pair of wedge members installed on the rear surfaces of the friction pads, wherein the upper ends of the friction pads are respectively hinged to the wedge members, and the lower ends of the friction pads are supported by elastic members so as to be protruded toward the disk. Even though friction between the disk and the friction pads occurs under the condition that braking is not performed, the friction is limited to regions between the edges of the lower ends of the friction pads and the disk, thereby reducing frictional force between the disk and the friction pads and thus preventing unintended braking.

Abstract: The invention relates to a ball screw for a motor vehicle brake, in particular for an electromechanically actuable motor vehicle brake, comprising a rotatable spindle; a nut that is axially movable relative to the spindle in accordance with the rotation thereof; and rolling body arrangement that is disposed between, and displaceable relative to, the spindle and the nut. In this ball screw it is provided that the rolling body arrangement is preloaded into a predetermined normal position by means of at least one spring element. The invention further relates to a vehicle brake having such a ball screw.

Abstract: A hydraulic vehicle brake having an optional locking device is described. The locking device is disposed inside a hydraulic chamber that is delimited by a brake piston. For reducing the hydraulic fluid intake, an incompressible filling body is provided inside the hydraulic chamber.

Abstract: The invention provides an electromechanical actuator for a vehicle brake, the actuator comprising: a motor; a screw-and-nut system having a first element, the screw or the nut, rotated by the motor; and an antirotation member preventing rotation of the second element of the screw-and-nut system, the nut or the screw, so that the second element moves linearly in response rotation of the motor so as to exert compression selectively on friction elements of the brake. According to the invention, the actuator is subdivided into a first portion comprising the screw-and-nut system, and a second portion comprising the motor, the portions being designed to be separable while the actuator is mounted on a brake.

Abstract: A method for controlling a self-energizing disc brake having an electric actuator in which an activation force applied to the actuator is amplified using a self-energizing device arranged between the actuator and brake lining is described. The method has a brake application unit for applying at least one brake lining to one side of a brake disc by carrying out an application movement of the brake lining relative to the brake disc, the application movement having at least a first movement component in a direction parallel to a rotational axis of the brake disc and a second movement component in a direction tangential to the rotational axis of the brake disc. The method includes also controlling at least one electromotive drive for activating the brake application unit. Rotation of the shaft of the electromotive drive is converted to a non-linear displacement of the brake pad in the tangential direction.

Abstract: A disc brake for a vehicle, reduced in volume by improving a driving unit thereof that presses a wedge and therefore conveniently installed in the vehicle. The disc brake includes a disc rotated along with wheels of the vehicle, inner and outer friction pads disposed at both sides of the disc, a caliper housing supporting the outer friction pad, a wedge member disposed at a rear side of the inner friction pad and formed with inclined surfaces on a rear side thereof, a supporting member formed with inclined surfaces corresponding to the inclined surfaces of the wedge member and fixed to the caliper housing, and a driving unit operating the wedge member to perform a braking operation. The driving unit includes a screw axis, a driving motor, a worm gear constituted by a worm and a worm wheel, and a moving member.

Abstract: A disk brake caliper with an integrated parking brake comprising a housing, a piston, an adjust screw, a ramp nut, a ramp nut return, a ramp shaft and a fix cage. The ramp nut has a body and a head at one end of the body. The fix cage is secured to the inner wall of the housing, which has a hollow structure and through which the body of the ramp nut passes. One of the fix cage and the head of the ramp nut is provided with a locking lug and the other of the fix cage and the head of the ramp nut is provided with a locking notch for mating with the locking lug to prevent the ramp nut from rotating relative to the housing.

Abstract: Disclosed is an electric disc brake. The electric disc brake includes friction pads for pressing a disc, a carrier for supporting the friction pads, a caliper housing supported by the carrier such that the caliper housing moves back and forth to press the friction pads, and a pressing device for pressing the friction pads. The pressing device includes a pressing member moving back and forth in the caliper housing to press one of the friction pads, a screw shaft coupled to the pressing member, a worm wheel coupled to the screw shaft, a driving shaft crossing the screw shaft and having a worm gear engaged with the worm wheel, a motor for rotating the driving shaft in a forward direction or a reverse direction, and an auxiliary pressing device.

Abstract: A disk brake capable of improving fabrication efficiency and having a transmission member. The transmission member (101) includes: an anti-rotation locking portion (130) formed on an outer circumferential portion of the transmission member, the anti-rotation locking portion being slidably fitted into a fitting area (72) on a cylinder (35) side so as to restrict rotation relative to the cylinder; and a seal groove (109) formed in an inserted portion (105). The seal groove stores a sealing member (118) for defining an internal space in the cylinder (35) and a cam chamber (62). The anti-rotation locking portion is fitted into the fitting area (72) on the cylinder side before the sealing member is positioned inside a hole (59) when the inserted portion (105) of the transmission member (101) is inserted into the hole.

Abstract: Disclosed herein is a disk brake for vehicles including a gap adjuster to compensate for a gap between a frictional pad and a disk based upon the wear of the frictional pad. The disk brake includes a disk rotatable along with each wheel of a vehicle, a movable frictional pad configured to press against one side of the disk to generate a braking force, a wedge member having the movable frictional pad attached to one side thereof, the wedge member being movable to the rotation direction of the disk by a drive motor to generate a power such that the wedge member advances to the disk, and a guide member to guide the wedge member such that the wedge member advances to the disk. The disk brake further includes a gap adjuster to uniformly maintain a gap between the movable frictional pad and the disk.

Abstract: A self-energizing disc brake having an electric actuator in which an activation force applied to the actuator is amplified using a self-energizing device arranged between the actuator and brake lining is described. The device has a brake application unit for applying at least one brake lining to one side of a brake disc by carrying out an application movement of the brake lining relative to the brake disc, the application movement having at least a first movement component in a direction parallel to a rotational axis of the brake disc and a second movement component in a direction tangential to the rotational axis of the brake disc. The device also has at least one electromotive drive for activating the brake application unit.

Abstract: A method for recognizing a reference position of a wedge member of a disk brake for vehicles, which has a disk rotating together with the rotation of a wheel of a vehicle, a movable friction pad rubbing against one surface of the disk and generating braking force, the wedge member having one surface, to which the movable friction pad is attached, and moving in a rotating direction of the disk and moving forward to the disk by a driving motor for generating driving force, a guide member guiding the wedge member to the disk when the wedge member moves in the rotating direction of the disk, and a driving force transfer member screw-connected to a rotary shaft of the driving motor, moving in the rotating direction of the disk by the driving motor, and causing the wedge member to move in the rotating direction of the disk, the method including moving the wedge member to a left end of an operating section and recognizing a position of the left end, when a driver applies a pressure to a pedal; moving the wedge membe

Abstract: An electric disk brake includes a single electric motor, a pair of rotary-to-linear conversion mechanisms to which rotation of the electric motor is transferred, a pressing member that presses a brake pad toward a disk rotor by each of the rotary-to-linear conversion mechanisms and a reduction mechanism interposed between the electric motor and the pair of rotary-to-linear conversion mechanisms. The reduction mechanism transfers rotation output, where input of the electric motor is expanded, to one side of the pair of rotary-to-linear conversion mechanisms and transfers reaction force of the rotation output to the other side of the pair of rotary-to-linear conversion mechanisms.

Abstract: A brake apparatus includes a motor-based braking unit driven by control of an ECU and equipped with a BIR operating unit, that is, a BIR-equipped braking unit having a BIR (Ball In Ramp) function of generating straight movement force using changes in path of balls disposed between ramps rotating, such that it can achieve F-S (Fail-Safe) and generate emergency braking force for safety by operating the BIR operating unit using a pedal-coupled cable only by operating a brake pedal even if a motor of the motor-based braking unit fails.

Abstract: In a disk brake for a vehicle, an electric motor is attached to a caliper body so as to exhibit a power for urging a friction pad toward a disk rotor. The electric motor includes a brush holder for holding brushes which contact a commutator at positions at even distances in a circumferential direction of an armature. Internal feed terminals are disposed in the brush holder so as to provide connection between the brushes and feed wires respectively leading to the brushes. A rotational angle detecting sensor is disposed in the brush holder so as to detect a rotational angle of the electric motor. The rotational angle detecting sensor is disposed in the brush holder on a side opposite from the internal feed terminals with respect to the armature. Thus, it is possible to improve assemblability of the rotational angle detecting sensor to the brush holder, and facilitate operation of connecting the feed wires to the brush holder.

Abstract: A thrust transmitting plate 14b on a cylinder hole bottom side portion of an adjuster nut 14, a drive side cam plate 12, and a cam spring 15 for biasing the thrust transmitting plate 14b toward the drive side cam plate 12 are accommodated in a generally cylindrical housing 16. Parts of the arc face of the circumferential wall of the housing 16 are deformed inwardly to form flat portions 16d. Engaging apertures 16e are formed in the flat portions 16d such that the engaging protrusions 14d are movable only in the cylinder axis direction when they are engaged. Portions of the circumferential wall of the housing 16 are protruded outwardly in convex shapes by presswork to form plural locking parts 16g arranged in the circumferential direction. The housing 16 is configured so as to be mounted in a cylinder hole 8 by latching those locking parts 16g to a circumferential groove 8f formed in the cylinder hole 8.

Abstract: While driving one motor, an electronic wedge brake (EWB) system according to an embodiment of the present invention implements a main braking function by self-energizing caused by a wedge operation. Since only one motor is used, it is possible to reduce the number of parts and to simplify the structure. Further, the electronic wedge brake system implements various functions, such as a function for maintaining a set clearance of a pad, a wheel lock prevention function, and an EPB function by using a solenoid interlocked with a NSL (Non-Self Locking) type screw that is moved in an axial direction and supports an axial reaction force transmitted from a pad. Furthermore, a NSL (Non-Self Locking) type push rod shaft, which supports the axial reaction force, is constrained using power of the motor during park braking, and accordingly, even when the solenoid is turned off, it is possible to stably and reliably park a vehicle.

Abstract: A disk brake for a vehicle, includes: an electric motor which has a motor shaft provided with an armature and which is attached to a caliper body so as to exhibit a power for urging a friction pad toward a disk rotor; and a Hall IC for detecting a rotational angle of the electric motor. The Hall IC is disposed within the electric motor so as to be located on an outer side of a pulser mounted on the motor shaft, and is retained by a motor case of the electric motor and a sensor cover made of a synthetic resin and detachably attached to the motor case. Thus, it is possible to reduce the number of parts by eliminating a special sealing measure.

Abstract: An actuating mechanism, particularly for a disc brake caliper, including a screw actuator having a screw 40 and a nut 18 threadably coupled together, an electric drive for driving one of the screw 40 and the nut 18 axially relative to the other and including a stator 20 and a rotor 22, a sleeve assembly including a generally cylindrical sleeve 25 interposed between the rotor 22 and the nut 18 and supporting the rotor 22 for rotation relative to the sleeve 25. The rotor 22 is connected to one of the screw 40 or the nut 18 for rotating the screw 40 or the nut 18. The screw actuator being at least partly mounted within the sleeve 25 and being arranged to bear against a portion of the sleeve assembly to transmit axial thrust to the sleeve assembly, and the sleeve assembly cooperating with an abutment to transmit the axial thrust to the abutment.

Abstract: A brake device arranged between a drive shaft and a driven shaft arranged coaxially with the drive shaft is disclosed. The brake device includes a first rotor, a second rotor, an engagement member, a braking mechanism, and a cam mechanism. The braking mechanism includes a movable friction member rotatable integrally with the second rotor, a fixed friction portion, and an urging member that urges the movable friction member toward the fixed friction portion. When rotational force is provided from the drive shaft to the first rotor, the cam mechanism permits transmission of rotation of the drive shaft to the driven shaft. When the rotational force is provided from the driven shaft to the second rotor, the cam mechanism restricts rotation of the driven shaft. The cam mechanism is provided independently from the engagement member.

Abstract: An electric brake has a master cylinder (12) including pistons (22, 24) for rear and front brake circuits and an electric motor (50) for actuating the rear brake piston (22). A feedback circuit provides a signal indicative of the fluid pressure supplied to the rear brake circuit and is operable in response to driver commanded braking force (48) to supply fluid pressure to the rear wheel brake circuit. A mechanical coupling (44, 46) between the second piston and a brake pedal is responsive to driver applied brake pedal force to supply fluid pressure to the front wheel brake circuit. A fluid circuit (30, 82) utilizes the fluid pressure supplied to the rear wheel brake circuit to augment driver applied brake pedal force thereby supplying power boosted fluid pressure to the front wheel brake circuit.

Abstract: An electromechanical brake has an element to be braked, at least one friction lining for frictionally engaging with the element, and an electric actuator for displacing the friction lining so that it frictionally engages with the element. A constructively and energetically improved electromechanical brake can be provided by a reversible energy accumulator functionally coupled to the electric actuator which interacts with a force multiplication device such that when the brake is actuated by the actuator, the stored energy is successively supplied to the force multiplication device with increasing actuation travel of the actuator and the device converts the energy in a set manner to an actuation torque that increases with increasing actuation travel of the actuator, the torque being transmitted indirectly or directly onto the friction lining. When the brake is released, a brake-inherent restoring force reacting upon the force multiplication device via the friction lining recharges the energy accumulator.

Abstract: Engaging grooves 8e extending in the cylinder axial direction and circumferential grooves 8f formed in a cylinder axial direction middle portion of the engaging grooves 8 are formed on a bottom side of a cylinder hole 8. Engaging rib 12b engaging with the engaging groove 8e and engaging rib 16d which engages with the engaging groove 8e and fits to the circumferential groove 8f are formed on a fixed side cam plate 12 and a housing, respectively. A bleeder hole 8g which penetrates communicates with the engaging grooves 8e and circumferential grooves 8f of the cylinder hole 8 is drilled in a caliper body 2. Communication holes 16h which allow communication between the inside and outside of the housing 16 is formed at a bottom side of the cylinder hole 8 rather than the engaging rib 16f of the housing.

Abstract: The invention relates to a stop brake for a tripod head (1), particularly for film or television cameras, comprising a substantially cylindrical brake caliper (8, 8?, 8?), which has a main body (84, 84?, 84?) for insertion into a receiving opening (7) designed in a housing part of the tripod head (1) and a brake block (82) for engaging with a brake disk (11) provided in the tripod head (1), and locking means in order to engage and disengage the brake block (82) with/from the brake disc (11), characterized in that an expanding section is provided in the region of the outer circumference of the main body (84, 84?, 84?) of the brake caliper (8, 8?, 8?), said section being deflected radially outward in the direction of an inside wall of the receiving opening (7) upon engaging the brake block (82) with the brake disc (11).

Abstract: An actuator includes a screw mechanism (13) having a threaded nut (16) rotatable by an electric motor (11) about a longitudinal axis (x) and a screw (17) translatable along the axis between an axially extended position and an axially retracted position. The screw (17) is connectable to a wire (W) of a Bowden cable (C) having an outer sheath (S). The actuator has a casing (20) with a first, fixed transversal surface (18). A cup (50) is mounted axially slidably on the casing (20) and has a second transversal surface (51) adapted for resting against an end of the sheath (S). A spring (53) is compressed between the first, fixed transversal surface (18) and the sliding cup (50). The cup (50) is capable of reaching an axially extended position, corresponding to a released brake condition, and an axially retracted position towards the first fixed transversal surface (18), against the bias of the spring (53), corresponding to a brake actuated condition.

Abstract: The invention is a electromechanical locking device for a brake piston of a hydraulically actuated wheel brake. The locking device is disposed at least in some portions in the interior of a hollow-cylindrical brake piston. This interior of the brake piston is filled with hydraulic pressure fluid and in the event of brake actuation is subjected to pressure. The invention includes a filler piece and a coupling element, which reduce the pressure-fluid-filled volume of the brake piston, prevent blocking of the locking device in its terminal positions, and make it possible for the two terminal positions of the locking device to be detected and evaluated by an electronic control unit.

Abstract: The invention relates to a ball screw for a motor vehicle brake, in particular for an electromechanically actuable motor vehicle brake, comprising a rotatable spindle, a nut that is axially movable relative to the spindle in accordance with the rotation thereof and rolling body arrangement that is disposed between, and displaceable relative to, the spindle and the nut. In this ball screw it is provided that the rolling body arrangement is preloaded into a predetermined normal position by means of at least one spring element. The invention further relates to a vehicle brake having such a ball screw.

Abstract: According to an embodiment of the present invention, there is provided an EPB serving as an electrical parking brake in which a gear wheel and an external ring gear are arranged parallel to a driving gear rotating through a motor serving as the power source on a side surface, and fixed and output sun gears generating output torque are arranged to penetrate the external ring gear in a shaft direction via an internal ring gear and a planetary gear being in inner contact with the external ring gear, an overall length of a single body type housing with the motor is determined only by diameters of the driving gear, the gear wheel, and the external ring gear. Therefore, a power assembly converting the power of the motor driven by an ECU into the output torque is downsized so that a caliper mounted on a wheel presses a wheel disk.

Abstract: A self-energizing disc brake includes a brake caliper or frame, the application device for applying at least one brake at least one brake pad unit, and at least one electromotive drive as an actuator for actuating the application device. The application device also has two or more brake plungers, wherein the two brake plungers are connected to one another by a connecting plate. At least one or more ramp arrangements is/are formed in the region adjacent to the brake plungers between the brake pad unit and the connecting plate.