Abstract: Provided is a suspension spring for a shock absorber using carbon fiber reinforced plastic. From a structure including a spring unit in which a plurality of bowl-shaped unit bodies are stacked between a first sheet and a second sheet along a length direction of a piston rod, the suspension spring for the shock absorber can achieve weight reduction and durability improvement while exhibiting the same performance as that of steel coil spring by using the carbon fiber reinforced plastic.

Abstract: In a hybrid power steering system, two steering assisters for supporting a steering force when the driver operates the steering wheel. The steering supporting force can be divisionally used according to the increase of speed and weight of a vehicle, thereby reducing the load applied to any of the steering assisters such that operating noise can be reduced and the endurance can be increased. Further, a motor of a lower power specification may be used even in the case of a truck or a bus that requires a relatively high steering force as compared to a passenger vehicle. Accordingly, production costs can be reduced and a sufficient steering supporting force can be obtained, thereby improving the driver's convenience, and enhancing fuel efficiency while increasing energy efficiency. Further, the steering can be safely maintained even when one of the steering assisters is not operating normally while the vehicle is being driven.

Abstract: The present invention relates to radar and antenna technologies. More particularly, the present invention relates to an antenna apparatus and radar apparatus that have an antenna structure that enables a high antenna gain and a balanced beam pattern by preventing a distortion of a beam pattern caused by a coupling phenomenon between antenna arrays.

Abstract: Disclosed herein is a combining structure of a shock absorber including a stopper assembly adapted to surround opposite ends of a bypass passage formed in a piston rod of the shock absorber, with at least one gateway provided to promote smooth flow of a working fluid, and to keep a piston valve firmly pressed against the piston rod and fixed. The combining structure may ensure that the overall length of the shock absorber does not unnecessarily increase, while generating normal damping force without interference with flow of the working fluid.

Abstract: An electromechanical brake includes a pair of pad plates provided with a friction pad to apply pressure to a disc, a carrier to support the pad plates, a caliper housing supported movably back and forth on the carrier to apply pressure to the pad plates; and a presser to apply pressure to the pad plates. The presser includes a pressing member to apply pressure to one of the pad plates, a driving motor to operate the pressing member, a gear assembly disposed between the driving motor and the pressing member to transfer rotational force of the driving motor to the pressing member. The gear assembly includes an input shaft connected to a motor, an external gear coupled to input shaft such that the external gear eccentrically rotates, and a stationary internal gear and a rotational internal gear meshed with the external gear such that the external gear revolves, while rotating. The rotational internal gear includes an output shaft in the center thereof and the output shaft is connected to the pressing member.

Abstract: The present invention relates to a radar technology, and in more particular, to a radar apparatus having an antenna arrangement capable of removing a non-detected region which may exist around a vehicle.

Abstract: Disclosed are a pinion sensor assembly and an electric power steering apparatus having the same. According to the present invention, it is possible to substantially reduce the number of constitutional elements to be assembled when assembling a torque sensor and neighboring elements, to reduce an error in change of torque caused by accumulation of assembling errors of the constitutional elements, thereby preventing a malfunction, and to enhance assemblability.

Abstract: A power steering apparatus includes: a torque sensor for detecting a steering torque applied to a steering wheel and outputting a torque signal corresponding to the steering torque; a speed sensor for detecting a speed of a vehicle and outputting a speed signal corresponding to the speed of the vehicle; a humidity sensor for outputting a humidity signal corresponding to a humidity of an interior of the power steering apparatus; and an electronic control unit for receiving the humidity signal from the humidity sensor, and for, when a measured humidity is an reference value or higher, generating a motor current signal for supplying an assistant steering force smaller than an assistant force set in response to the torque signal and the speed signal.

Abstract: A rack-driven auxiliary power steering apparatus prevents a ball nut and a nut pulley from idling due to a slip thereof and increases durability when the drive belt is operated by driving of a motor, and minimizes vibrations and noise transferred through the rack bar, the ball nut, and the nut pulley when the rack bar is slid while the nut pulley and the ball nut are rotating, thereby providing a comfortable steering feeling to the driver.

Abstract: Disclosed herein are a decelerator in which a first deceleration unit of a planet gear type is provided inside a second deceleration unit of a cycloid type so as to apply eccentric rotation force to the second deceleration unit, and a motor brake with the same. The decelerator restricts an increase in the axial thickness of a motor and achieves an effectively increased deceleration ratio, and the motor brake equipped with the decelerator restricts an increase of the overall length thereof due to the decelerator, achieving enhanced space utility.

Abstract: Disclosed herein are a cord assembly for replacement of an outer beam and a carrier including the same which may provide an improved degree of freedom in design and prevent damage to the carrier. The cord assembly for replacement of an outer beam, which is fastened to a carrier at which a pair of pad plates is installed to be movable forward and backward with pads attached to inner surfaces of the pad plates to be squeezed against a disc rotating together with a wheel of a vehicle, includes at least one cord having a predetermined stiffness and formed by twisting at least two steel wires and fasteners fastened to both ends of the at least one cord to be installed at coupling portions protruding respectively from both ends of the carrier.

Abstract: Disclosed is a solenoid valve for a brake system which improves an assembly structure of components configuring the valve to enhance durability and control performance of the valve. The solenoid valve for a brake system includes a seat housing installed at a bore of a modulator block and provided with a through hole formed therethrough, a valve seat installed at the through hole of the seat housing and provided with an orifice, a sleeve provided with a hollow and connected to the seat housing, a magnetic core, an armature installed at the sleeve, and a return spring installed in the sleeve, wherein the armature includes an upper armature formed of a magnetic material, and a lower armature formed of a non-magnetic material, wherein the through hole of the seat housing is provided with a guide region having a diameter corresponding to an outer diameter of the lower armature.

Abstract: A booster assembly for a vehicle capable of reducing the noise and manufacturing cost thereof, the booster assembly including an input rod configured to reciprocate in linkage with a brake pedal, a control plunger configured to reciprocate in linkage with the input rod, and a boosting piston configured to reciprocate in linkage with the control plunger or reciprocate in linkage with a valve body, wherein the boosting piston directly transmits an output, which is generated at the booster, to the master cylinder without being separated.

Abstract: A hydraulic brake device and a method for controlling the same are disclosed. The disclosed hydraulic brake device determines failure of a booster pressure sensor provided at a hydraulic power unit, using pressure correlation among a master cylinder pressure sensor, a pressure sensor provided at the hydraulic power unit to detect a pressure transferred to a hydraulic pressure controller, and a high pressure accumulator pressure sensor. When there is failure of the booster pressure sensor, the driver is informed of the failure, and a braking operation is carried out, taking into consideration the failure. Accordingly, it may be possible to avoid excessive braking, sudden braking, insufficient braking, etc., and to achieve enhancement in braking sensation and braking force.

Abstract: Disclosed is an electric parking brake (EPB) including a housing, a parking cable connected to brakes, a motor to generate driving force to drive the parking cable, a reduction gear unit connected to a rotating shaft of the motor, a screw-nut unit including a screw member, a nut member screw-coupled to the screw member and a gear member mounted on an outer surface of the nut member, and a displacement sensor connected to an end of the nut member to detect a magnitude of force applied to the parking cable. The parking cable includes a first parking cable connected to an end of the screw member, and a second parking cable connected to an end of the displacement sensor when a dual puller type is applied. The end of the displacement sensor is connected to a fixing cable fastened to the housing when a single puller type is applied.

Abstract: An in-wheel motor system capable of maximizing the efficiency in using a wheel space by improving a mounting structure thereof, the in-wheel motor system installed at a wheel of a vehicle to transmit a rotational force including an axle installed at the wheel of the wheel and rotating together with the wheel, an in-wheel motor mounted inside the wheel and provided with a rotor and a stator that are used to generate a rotational force to drive the wheel, the rotor, and the stator disposed to face each other while having an accommodation space thereinbetween, a cycloid decelerator installed at a center of the in-wheel motor, and provided with an output shaft to transmit a rotational force at a reduced speed from the in-wheel motor to the axle and an input shaft that passes through the in-wheel motor and rotates together with the rotor, a disc installed at one end portion of the input shaft that protrudes by passing through the in-wheel motor, and a disc brake configured to provide a braking force by pressing th

Abstract: The present invention relates to a steering shaft, and more particularly, to a steering shaft which is provided with a misassembly prevention structure for preventing misassembly when a shaft is inserted into and assembled with a yoke.

Abstract: Disclosed are an electronic parking brake system and a control method thereof. An aspect is to protect an electronic parking brake system by judging whether it enters a control mode based on results of monitoring a peripheral temperature of the electronic parking brake system and a motor temperature after operation. The electronic parking brake system includes a locking/unlocking switch to lock or unlock an electronic parking brake, a motor to drive the electronic parking brake, a temperature sensor to measure a peripheral temperature around the motor, and a controller that limits a locking function of the electronic parking brake when the repetition number of locking/unlocking operations of the electronic parking brake is zero for a predetermined short time under assumption that the temperature sensor breaks down, so as to prevent occurrence of breakdown due to overload and overheating of the motor.

Abstract: Disclosed herein is an electronically controlled brake booster. The electronically controlled brake booster includes a brake pedal sensor to detect a stroke of a brake pedal, a motor to transmit power required to generate a braking pressure, a cylinder pressure sensor to detect an internal pressure of a cylinder generated via the motor, and an electronic control unit to control driving of the motor. The electronic control unit includes a target pressure setting element to set a target pressure using the detected brake pedal stroke information and a proportional-integral controller to perform proportional-integral compensation of an error between the target pressure and the pressure of the cylinder. The electronic control unit further includes a proportional-integral gain adjustor to adjust at least one of a proportional gain and an integral gain of the proportional-integral controller using the cylinder pressure information detected via the cylinder pressure sensor.

Abstract: Disclosed herein is an electronic disc brake in which driving force of a motor may be transmitted to a gear unit in a serial manner. The electronic disc brake which has a carrier, a caliper housing, a pair of pad plates disposed at both sides of a disc, and a piston installed within a cylinder part and pressing one of the pair of pad plates toward the disc, includes a spindle member passing through the rear wall of the caliper housing and rotated within the cylinder part, a nut member screw-connected to the spindle member and pressing the piston or releasing pressing of the piston, a motor generating driving force, and a cycloid reducer amplifying the driving force generated from the motor and transmitting the amplified driving force to the spindle member, and the motor, the cycloid reducer and the spindle member are coaxially connected in series.