Abstract: Provided is an electric parking brake device in which a drum brake includes braking gap automatic adjustment means and a parking brake lever, and the operation of an electric actuator that drives the parking brake lever is controlled by a control unit. When an application operation time of the electric actuator (38) by the time when a parking brake state is obtained has exceeded a predetermined application operation end determination time (T2), the control unit (C) determines that the braking gap automatic adjustment means (18) is abnormal. With this configuration, at the time of obtaining the parking brake state, the presence or absence of abnormality in the braking gap automatic adjustment means can be determined.

Abstract: A method of assembling a portal gear box assembly and/or a braking system is disclosed. The method includes installing a clutch pack through an opening in a portal box over an output shaft, installing a face plate that covers the opening and installing a wheel hub onto the output shaft. The portal gear box includes a clutch pack including a first and second set of clutch plates interspersed between each other. The first set of clutch plates configured to rotate with rotation of the output shaft and the second set configured to not rotate. The clutch pack is compressible by a hydraulic piston and pressure plate, compressing the sets of the clutch plates reducing the rotation of the output shaft.

Abstract: The present disclosure relates to an electronic brake system and an operation method thereof. The electronic brake system prepares various valves provided on flow paths, that connect components and a reservoir, in a closed state, and then switches the various valves to an open state after a hydraulic pressure of a pressure medium is formed by a hydraulic supply device.

Abstract: The disclosure provides a magnetic yoke iron core and a brake including a magnetic yoke iron core, a first movable plate, a plurality of friction disks, at least one second movable plate, a coil, an armature and an elastic part; the first movable plate is located in a first mounting space and close to a first shaft end; a plurality of friction disks are sequentially arranged in the first mounting space along an axial direction of the magnetic yoke iron core and located at a side of the first movable plate close to a second shaft end; the coil is arranged in a second mounting space; the armature is connected with the first movable plate through a connector; the second movable plate is connected with the connector; and the elastic part having a pre-tightening force which enables the armature to be far away from the magnetic yoke iron core.

Abstract: An eddy-current mechanism including a rotor rotatable about a rotor axis at least one electrically conductive material coupled to the rotor for rotation therewith, at least one magnet configured to apply a magnetic field extending at least partially orthogonal to the plane of rotation of the conductive member, and characterised in that upon rotation of the rotor, the conductive member is configured to move at least partially radially from the rotor axis into the applied magnetic field.

Abstract: A system and method include with a mass damper for reducing vibrations in a structure or machine. The mass damper includes a frame that is movable linearly along a base, which includes a track gear. A flywheel is in geared engagement with the track gear so as to be rotationally driven as the frame moves linearly relative to the base. A rotation damper is mounted on the frame and is geared engagement with the flywheel, the rotation damper producing a counter-torque against rotation of the flywheel that is proportional to a rotational velocity of the flywheel. The rotation damper has an electrical characteristic that is automatically adjusted to change the counter-torque and tune the mass damper.

Abstract: The present application relates to a friction brake system (1) for a vehicle. The friction brake system (1) comprises a braking member (12) connectable to first and second brake pads and configured for pressing the first and second brake pads against a friction surface. The system (1) further comprises a transmission unit (2) configured for converting a rotary motion generated by an electric motor (30) into a braking motion of the braking member (12). The transmission unit (2) comprises a ball-in-ramp assembly (3) having a first plate (9) with at least one groove (23), a second plate (10) with at least one groove (22) facing the groove (23) of the first plate (9), and at least one ball (11) arranged between the first plate (9) and the second plate (10). The ball (11) is retained by the groove (23) of the first plate (9) and the groove (22) of the second plate (10).

Abstract: The present disclosure relates to a master cylinder and an electronic brake system having the same. The master cylinder includes a cylinder block having a bore of a multi-stage form in a longitudinal direction therein, a first master chamber and a second master chamber sequentially arranged in series in the bore, a first master piston provided to move in connection with an operation of a brake pedal and to pressurize the first master chamber, a second master piston provided to be displaceable by a displacement of the first master piston or a hydraulic pressure in the first master chamber and to pressurize the second master chamber, and a pedal simulator interposed between the first master piston and the second master piston to provide a reaction force to the brake pedal, wherein a cross-sectional area of the first master piston is provided to be relatively larger than a cross-sectional area of the second master piston.

Abstract: An automatic speed reducing wheel includes a wheel unit and a speed reducing unit. The wheel unit includes a wheel seat, a wheel axle passing through the wheel seat, and a roller rotating about the wheel axle. A plurality of blockers is disposed on one side of the wheel frame in adjacent to an edge thereof in a radiation shape arrangement. The blockers rotate along with the roller. The speed reducing unit includes a fixing seat and a sliding member. The fixing seat is on one side of the roller and includes a sliding bore. The sliding member is slidably disposed in the sliding bore and includes an elastic portion having a blocking portion. When the roller moves downhill, the blocking portion of the sliding member protrudes out of an outer side of the sliding bore to interrupt a rotation route of the blockers, achieving a speed reducing effect.

Abstract: The present invention relates to a hydraulic damper, comprising a tube, a piston assembly comprising compression and rebound valve assemblies, and a controllable solenoid valve. The piston assembly further comprises a housing; first, second and third partition members; first, second, third and fourth check valves; and one or more radial channels; wherein said first partition member has a first axial opening and the solenoid valve has a valve member provided with at least one inlet in fluid communication with said first axial opening, and one or more outlets in fluid communication with said first internal chamber, wherein said second partition member has a second axial opening; wherein said first axial opening and said second axial opening allow the working liquid to flow from said third internal chamber to said at least one inlet of the solenoid valve bypassing said second internal chamber.

Abstract: An anti-rotation sleeve for an electric brake system having a shaft received in and movable relative to a passage of a housing includes a body extending along a centerline from a first end to a second end. An inner surface defines a passage for receiving the shaft and pockets extending radially from the passage configured to provide sliding interfaces with tabs on the shaft. Projections provided on an outer surface of the body and extending parallel to the centerline cooperate with the housing to prevent rotation of the sleeve relative to the housing. Each projection is aligned with a normal direction of one of the interfaces.

Abstract: The present disclosure relates to an electronic brake system and an operation method thereof. The electronic brake system includes a reservoir in which a fluid is stored, a hydraulic pressure supply device configured to generate a hydraulic pressure by operating a hydraulic piston in response to a signal from a pedal displacement sensor detecting a displacement of a brake pedal, a hydraulic control unit including a first hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a first hydraulic circuit including two wheel cylinders, and a second hydraulic unit configured to control the hydraulic pressure to be transferred from the hydraulic pressure supply device to a second hydraulic circuit including other two wheel cylinders.

Abstract: A vehicle braking system includes a master cylinder having a pedal feel simulator incorporated therein, a reservoir configured to retain a volume of unpressurized brake fluid for use in the vehicle braking system, a wheel cylinder coupled to the master cylinder via a first braking circuit, an electronically-controlled pressure generating unit configured to move fluid through the first braking circuit to the wheel cylinder in a first mode of operation, and a two-way valve positioned in the first braking circuit and configured to selectively decouple the master cylinder from the wheel cylinder. In the first mode of operation, the master cylinder is decoupled from the wheel cylinder via the two-way valve and the master cylinder is coupled to the reservoir via the two-way valve. In a second mode of operation, the master cylinder is coupled to the wheel cylinder via the two-way valve.

Abstract: A brake apparatus for a vehicle may include: a pair of screw bars located in a caliper body; a pair of nut parts configured to cover outsides of the respective screw bars, engaged with the respective screw bars, and selectively moved toward a brake pad or moved to an opposite side of the brake pad; a pair of piston parts moved with the nut parts, and configured to apply pressure to the brake pad when pressed by the nut parts or remove the pressure applied to the brake pad when a pressing of the nut parts is removed; an elastic spring installed on each of the piston parts, and configured to apply an elastic restoring force to cause the piston part to return to an original position; and a spring retainer mounted on each of the piston parts, and brought into contact with the elastic spring.

Abstract: Disclosed herein an electric parking brake includes a pair of pressing portions provided in a caliper housing to convert rotational motion into linear motion to press a brake pad; an actuator configured to transmit power to the pair of pressing portions; and a load control portion provided rotatably between the pair of pressing portions and the actuator, the load control portion applying a uniform load to the pair of pressing portions by pressing any one of the pair of pressing portions that generates a less load during braking operation.

Abstract: A damping force adjustable shock absorber includes a flow path (an oil passage of a piston) in which a flow of hydraulic fluid is generated due to a movement of a piston rod, and a damping force adjustment valve provided in the flow path and configured to be subjected to an adjustment of an opening/closing operation by a solenoid. A frequency adaptive mechanism is provided in the flow path in series with the damping force adjustment valve. The frequency adaptive mechanism is configured to reduce a damping force for a high-frequency vibration. The frequency adaptive mechanism includes a second valve mechanism (a compression-side damping force generation valve and an extension-side damping force generation valve) configured to apply a resistance force to a flow of the hydraulic fluid from an upstream-side chamber (an upper-portion chamber or a lower-portion chamber) to a downstream-side chamber (the lower-portion chamber or the upper-portion chamber).

Abstract: A braking system includes an actuating unit for specifying a braking intention, and multiple braking devices. A first braking device includes a wheel brake, onto which a drivable pressure generator is able to apply a pressure medium, which is under braking pressure, the pressure generator being contactable with a pressure medium reservoir via a supply line. A second braking device, for converting kinetic energy of the motor vehicle into electric energy, is equipped with a drivable electric machine. The two braking devices jointly contribute to the generation of the braking power of the braking system, the respective proportion of a braking device in the braking power being variable. A connection is established, through which pressure medium is able to flow, from the wheel brake to the pressure medium reservoir using an electronic control unit, when the second braking device is able to itself generate the braking power.

Abstract: Disclosed is a sensing device for an electromechanical brake, including: a power part configured to generate an operation force for braking when power is applied thereto; a housing positioned on the power part; a pressurized part positioned on the housing and pressurized by a reaction force caused by driving of the power part; and a sensing part connected to the housing and configured to sense a pressing force by the pressurized part.

Abstract: A pad pin receiver includes a body plate is attached to an inner side of a pin insertion portion provided in a back plate of a disc brake pad. The pin insertion portion engages with a pin inserted into the pin insertion portion during braking. The body plate covers a portion of an inner peripheral surface of the pin insertion portion. A bent plate is bent at at least one end portion of the body plate in a length direction of the body plate. When the body plate is attached to the pin insertion portion, the body plate extends in a thickness direction of the back plate, and the bent plate overlaps with the back plate in the thickness direction of the back plate.

Abstract: The present invention relates to a vehicle brake system. To this end, the vehicle brake system according to one aspect of the present invention includes an electric motor, a brake oil pump operated by the electric motor, and an electronic control unit including a motor connector to control the electric motor, and the electronic control unit includes a detecting sensor configured to detect oil introduced through the motor connector.