Provided is a disc brake including: a piston, which has a bottomed cylindrical shape, and is configured to press inner and outer brake pads against a disc rotor; a nut member (thrust member) configured to thrust the piston through rotation of a spindle driven by an electric motor; a rotation stopping member configured to restrict rotation of the nut member relative to the piston; a flat surface portion, which is formed on an inner side of the piston, and is configured to restrict rotation of the rotation stopping member and stop the rotation stopping member through engagement; and a fixing member configured to restrict movement of the rotation stopping member in an axial direction relative to the piston. This configuration allows easy manufacture of the nut member.

A brake caliper has a fixed seat. The fixed seat has a first brake lining and a second brake lining. The fixed seat further has a first piston and a second piston that can be pushed by hydraulic oil. A movable seat is slidably disposed on the fixed seat. The movable seat has a link portion that can link the first brake lining and a drive unit that can push the second piston mechanically. The first piston and the second piston can be pushed hydraulically to drive the first brake lining and the second brake lining for braking. The drive unit pushes the second piston to drive the second brake lining, and pushes the movable seat to drive the first brake lining for braking.

A brake actuator for an aircraft braking system, comprising a housing, a sleeve, an annular member mounted to the housing extending radially inwardly for engagement with the ratchet teeth of the sleeve, a piston slidable along an axis (X), a piston head disposed at a first end of the pin portion, a cap disposed at a second end of the pin portion for operative engagement with a brake element of the housing, and a second position in which the piston head is drivingly disengaged from the sleeve.

Disclosed herein a caliper brake includes a brake disc rotating with a wheel of a vehicle; an inner brake pad and an outer brake pad respectively disposed on opposite sides of the brake disc; a pressing member configured to press the inner brake pad against the brake disc; a caliper housing in which the pressing member is movable forward and backward; a caliper bridge connected to the caliper housing and configured to press the outer brake pad against the brake disc by a reaction force in response to operation of the pressing member; a carrier fixed to a body of the vehicle; and at least one guide rod fixed to the carrier and guiding sliding movement of the caliper housing and the caliper bridge with respect to the carrier.

A helical connection mechanism for an electromechanical brake piston is configured to be mounted in the piston, including a sleeve and a drive member cooperating by a helical connection of longitudinal axis (AX), and a locking structure for rotationally locking the sleeve relative to the piston about the longitudinal axis (AX) and for axially holding the mechanism. The locking structure includes a plate attached to the sleeve and extending orthogonally to the longitudinal axis (AX), at least three axial extensions cooperating with an axial wall of the piston and at least one radial shape cooperating with the axial wall of the piston.

A braking system includes a brake stack; a first brake cavity operably coupled to the brake stack, the first brake cavity including a first plurality of brake actuators; a second brake cavity operably coupled to the brake stack, the second brake cavity including a second plurality of brake actuators; and a brake control module, the brake control module being configured to activate either the first plurality of brake actuators or both the first plurality of brake actuators and the second plurality of brake actuators in response to an input brake load.

An electronic parking brake system including: an electronic parking brake (EPB) including a piston that moves by a hydraulic pressure to press brake pads onto a brake disc, a cylinder in which the piston is provided movably forward and backward, and an EPB actuator that moves the piston by a motor to press the brake pads onto the brake disc; a pressure sensor configured to detect a hydraulic pressure of the cylinder; an electronic stability control (ESC) actuator configured to generate and supply a hydraulic pressure to the cylinder; and a controller configured to control the EPB actuator and the ESC actuator, wherein the controller is configured to detect an actual hydraulic pressure of the cylinder through the pressure sensor in an EPB disengagement, and when the detected actual hydraulic pressure is higher than a required hydraulic pressure, control the EPB actuator to start an EPB disengagement control.

A brake device for installation on an axle of wheels including a piston; a casing accommodating at least the piston; a container; a first cast iron disc and a second cast iron disc, joined to the container; a first brake lining; a first supporting disc on which the first brake lining is located; and a bearing fixed to the central cylindrical wall of the container around the axle. The container and the casing remain fixed without rotating about the axle and the first brake lining together with the first supporting disc are fixed to the axle. The piston is further configured to displace the container together with the two cast iron discs towards the first brake lining until the first cast iron disc makes contact with the first brake lining. The container includes an inner circuit configured to accommodate a coolant.

Disclosed herein an electric parking brake. The electric parking brake according to an embodiment of the disclosure includes a power transmission unit that receives a rotational force from an actuator that generates a driving force for implementing a parking braking force and converts the rotational force into a linear motion to press or release a pair of brake shoes disposed on both sides of an inside of a drum, respectively, wherein the power transmission unit includes a pressing piston configured to press the pair of brake shoes, a driving cylinder configured to guide the pressing piston, and a dust cover installed between the pressing piston and the driving cylinder, the dust cove formed to be deformable according to an operation of the pressing piston, wherein the dust cover is configured to maintain internal airtightness of the power transmission unit and prevent foreign substances from entering.

A normally closed disc clamp system includes a housing with a rotating disc, a brake ring and a pressure-enhancing ring arranged therein. When only a first chamber is supplied with fluid, the fluid pushes the brake ring to release the rotating disc. When only a second chamber is fed with fluid, the fluid pushes the brake ring to keep the rotating disc in the braking state, and pushes the pressure-enhancing ring to compress an elastic unit. The energy generated by the compression of the elastic unit acts on the brake ring through the fluid, so that the brake ring achieves a double pressurization effect. If the action of the fluid fails, the brake ring can still provide a braking effect to the rotating disc through the elastic unit to improve operational safety. Further, the present invention further provides a rotating table using the normally closed disc clamp system.