There is provided a brake lining for a railway vehicle that can reduce brake squeal in braking. A brake lining for a railway vehicle is used for a disc brake system of a railway vehicle. This brake lining includes a base plate, a sintered friction material, and a friction material supporting mechanism. The friction material supporting mechanism is disposed between the base plate and the sintered friction material and supports the sintered friction material in such a manner that the sintered friction material can move with respect to the base plate. The sintered friction material has a Young's modulus of 35.0 GPa or more.

An electrically controlled differential gear is disposed between a right front wheel and a left front wheel of a vehicle. The electrically controlled differential gear includes a clutch mechanism that limits a differential operation of the electrically controlled differential gear. A second ECU (control portion) obtains information as to failure associated with actuation of a right front electric brake mechanism. The second ECU obtains a physical amount relating to a required braking force which is applied to the left front wheel and the right front wheel. The second ECU outputs a differential limiting control command for limiting the differential operation of the electrically controlled differential gear to the clutch mechanism (or more specifically, a differential ECU that controls the clutch mechanism) based on the information as to the failure and the physical amount relating to the required braking force.

A disk brake includes a brake mechanism configured to apply a braking force by advancing a piston in a cylinder portion based on driving of an electric motor to thus press inner and outer brake pads against a disk rotor, and an elastic member configured to bias the inner and outer brake pads in an axial direction of the disk rotor and in a direction away from the disk rotor. A biasing force of the elastic member is greater than sliding resistance of the piston on the cylinder portion. Due to this configuration, the disk brake can effectively prevent or reduce the drags of the inner and outer brake pads.

A disk brake includes a brake mechanism configured to apply a braking force by advancing a piston in a cylinder portion based on driving of an electric motor to thus press inner and outer brake pads against a disk rotor, and an elastic member configured to bias the inner and outer brake pads in an axial direction of the disk rotor and in a direction away from the disk rotor. A biasing force of the elastic member is greater than sliding resistance of the piston on the cylinder portion. Due to this configuration, the disk brake can effectively prevent or reduce the drags of the inner and outer brake pads.

Provided fire an electric parking brake device and an electric parking brake control method that can apply an appropriate clamping force by accelerating data measurement and by suppressing influence of load fluctuation during idle rum For this end, the electric parking brake device of the present invention includes: a disc rotor; brake pads that are pressed to the disc rotor; an electric motor that imparts a thrust to the brake pads; a current detection unit that detects a motor current of the electric motor; and a brake control device that controls the electric motor 8 based on the motor current. The brake control device controls the electric motor 8 based on a current change amount of an electric current during a period from a point of time that the motor current becomes a peak current to a predetermined point of time.

An electric disc brake system for a trailer. The brake system employs a caliper assembly that is attached to the trailer with floating fasteners, wherein the caliper assembly straddles an axle mounted rotor positioning an inner and outer brake pad adjacent to the rotor. A screw drive assembly is attached to the caliper. The assembly includes an electric motor coupled to a piston by a threaded shaft. The screw drive assembly converts rotation of the electric motor into linear motion to movement of the piston, wherein the inner and outer brake pads engage the rotor based upon the amount of pressure applied by the piston. A controller reacts to the pressure applied to a brake pedal to cause the electric motor to rotate in a clockwise or counter-clockwise direction.

An electric disc brake system for a trailer. The brake system employs a caliper assembly that is attached to the trailer with floating fasteners, wherein the caliper assembly straddles an axle mounted rotor positioning an inner and outer brake pad adjacent to the rotor. A screw drive assembly is attached to the caliper. The assembly includes an electric motor coupled to a piston by a threaded shaft. The screw drive assembly converts rotation of the electric motor into linear motion to movement of the piston, wherein the inner and outer brake pads engage the rotor based upon the amount of pressure applied by the piston. A controller reacts to the pressure applied to a brake pedal to cause the electric motor to rotate in a clockwise or counter-clockwise direction.

The invention relates to a brake pad spring (1) for at least one brake pad (2), in particular for two brake pads, wherein the brake bad spring (1) comprises, for each of the at least one brake pad (2), two opposing walls (9, 10), configured for receiving a portion of a backplate (3) of the respective brake pad (2) therebetween, and for guiding the respective brake pad (2) between a non-braking position (A) in which the respective brake pad (2) is located at a first section (S1) of the opposing walls (9, 10), and a braking position (B) in which the brake pad (2) is located at a second section (S2) of the opposing walls (9, 10). At least a portion of at least one of the two opposing walls (9,10) is elastically movable and the two opposing walls (9, 10), at least sectionally, have a non-vanishing angle with respect to each other, a distance between the two opposing walls (9, 10) diminishing from the first section (S1) towards the second section (S2), in order to create a return spring effect for the respective brake pad (2), from the braking position (B) towards the non-braking position (A). The invention also relates to a disk brake system, comprising a brake disk (5) and a brake pad spring (1) which is mounted on a carrier (7).

A hydraulic vehicle brake includes a housing and first and second brake pistons at least partially located within the housing. The brake pistons are configured to cooperatively press a common friction pad against a rotor of the vehicle brake. Each of the pistons is a hollow piston including a substantially solid piston bottom. A clamp beam laterally spans the piston bottoms of the first and second pistons within the housing. The clamp beam is configured to selectively apply longitudinally directed clamping force upon the pistons. A spindle is selectively driven for rotational motion by an electric motor. The spindle is interposed laterally between the first and second brake pistons within the housing. The spindle is configured to reciprocate the clamp beam longitudinally within the housing responsive to a direction of the rotational motion.

A hydraulic vehicle brake includes a housing and first and second brake pistons at least partially located within the housing. The brake pistons are configured to cooperatively press a common friction pad against a rotor of the vehicle brake. Each of the pistons is a hollow piston including a substantially solid piston bottom. A clamp beam laterally spans the piston bottoms of the first and second pistons within the housing. The clamp beam is configured to selectively apply longitudinally directed clamping force upon the pistons. A spindle is selectively driven for rotational motion by an electric motor. The spindle is interposed laterally between the first and second brake pistons within the housing. The spindle is configured to reciprocate the clamp beam longitudinally within the housing responsive to a direction of the rotational motion.