The present disclosure relates to an engagement structure of a push rod guide and a push rod guide cover of a brake chamber for a vehicle, in which a pair of semi-circular, hingedly connected, half members in a shape of a plate are assembled at a side surface of axial direction of the push rod into a shape of a disk, a push rod opening is formed at the center of the disk to guide a movement of the push rod, a protrusion projecting upwards is provided at a central part of the push rod guide, forming a step in a radial direction of the push rod guide, and a receiving groove corresponding to the step is formed on an inner circumferential surface of the push rod guide cover and is connected to the step.

A brake actuator (1, 1′) includes a casing (10), an electric motor for providing a driving torque, a cam disc (20) rotatably mounted to the casing (10) and operatively coupled to the electric motor, and a push rod (30) received in the casing (10), and configured to reciprocate in a longitudinal direction (100) between a retracted position (300) and an extended position (400). The push rod (30) and the cam disc (20) are operatively coupled such that a rotational movement of the cam disc (20) causes a linear movement of the push rod. A guiding member (40), in particular a bushing, is mounted to the casing (10), wherein the guiding member (40) guides the movement of the push rod (30) in the longitudinal direction (100).

Some embodiments of the disclosure provide a brake mechanism, a power platform and a karting. The brake mechanism includes a brake assembly. The brake assembly is configured to be mounted on a vehicle frame, the brake assembly includes a brake pad, a position of the brake pad is adjustably configured, such that the brake pad has a first position and a second position. Herein, when the brake pad is located at the first position, the brake pad is configured to be in contact with a tire, and when the brake pad is located at the second position, the brake pad is separated from the tire.

An electric brake apparatus of a vehicle includes a caliper body formed with a cylinder section and a boost force support section disposed to face the cylinder section with a brake disc interposed therebetween; an internal motor installed in the cylinder section, and generating a rotational displacement by application of current; a push rod disposed coaxially with the internal motor; a ball-in-ramp disposed between the internal motor and the push rod, converting the rotation displacement of the internal motor into a linear displacement, and transferring the linear displacement to the push rod; a piston disposed in an open part of the cylinder section, pushed and moved by the push rod; a first friction pad coupled to the piston, and disposed on one side of the brake disc; and a second friction pad coupled to the boost force support section, and disposed on the other side of the brake disc.

An automatic slack adjuster includes a lever configured to be coupled to a push rod of a brake actuator, and to pivot about a rotational axis when actuated by the push rod, the rotational axis having a predetermined fixed location relative to the vehicle. A stroke indicator label is arranged on the lever and configured to designate, for the automatic slack adjuster, a predetermined zero stroke position, a working stroke range, and an overstroke range. A stroke indicator element is configured to visualize the current stroke level of the automatic slack adjuster on the indicator label by way of relative movement between the stroke indicator element and the stroke indicator label in response to pivotal movement of the lever. A mounting bracket of a mounting interface can be adjusted relative to the rotational axis for correctly installing the stroke indicator element.

An electro-mechanical drum brake is disclosed. An electro-mechanical drum brake according to one aspect of the present disclosure may include a back plate, a drum disposed on one side of the back plate, a first brake shoe and a second brake shoe rotatably coupled on one surface of the back plate, a pressing member configured to press one sides of the first brake shoe and the second brake shoe so that the first brake shoe and the second brake shoe advance toward or retreat from an inner circumferential surface of the drum, an actuator configured to provide a driving force so that the pressing member presses the first and second brake shoes, and a sensor positioned between the other sides of the first and second brake shoes and formed to measure loads of the first and second brake shoes applied in a first direction tangent to a rotational radius of the drum.

Some embodiments of the disclosure provide a brake mechanism, a power platform and a karting. The brake mechanism includes a brake assembly. The brake assembly is configured to be mounted on a vehicle frame, the brake assembly includes a brake pad, a position of the brake pad is adjustably configured, such that the brake pad has a first position and a second position. Herein, when the brake pad is located at the first position, the brake pad is configured to be in contact with a tire, and when the brake pad is located at the second position, the brake pad is separated from the tire.

A transportation vehicle with a brake system designed for rapid deceleration of a moving vehicle, which enhances the effectiveness of vehicular braking in emergency situations, and increases the safety of automobile traffic on roads, which results in greater road-traffic safety due to enhanced reliability and higher effectiveness of braking under emergency situations. A vehicular hydraulic brake system having a master brake cylinder with a hydraulic reservoir supplying a brake fluid, a control foot pedal and a vacuum booster connected to an operating brake cylinder of each wheel. The brake system has emergency braking assemblies mounted before the operating brake cylinders of at least rear wheels. The emergency braking assembly includes an electrical mechanism operating in a reciprocating manner and has a rod attached to a piston of a hydraulic cylinder. An inlet hole of the hydraulic cylinder is connected to a pipeline in communication with the master braking cylinder. An outlet hole of the hydraulic cylinder is in communication with the operating brake cylinder. A top portion of the hydraulic cylinder has a compensation port in close proximity to the electrical mechanism, said compensation port being connected to the pipeline in communication with the master braking cylinder. A bottom portion of the hydraulic cylinder of the emergency braking assembly is disposed not lower than a top level of the operating brake cylinder.

A motor transmission unit for an electronic parking brake device includes a case, a driving member, a board, a rod and a push unit. The case is slidably mounted to a cap of a clamp. The driving member is partially inserted into the case. The board is threadedly mounted to the driving member. The rod is located between inner periphery of the passage and the board. The push unit has a first end thereof contacting the first end face, and a second end of the push unit is inserted in the clamp. A portion of the second end of the push unit contacts a piston. When the driving member is driven, the board moves axially. The board is restricted by the rod and does not rotate. The board pushes the push unit axially which moves the piston to push a lining plate of the clamp to contact a brake disk.

A cable-pull actuation system for a parking brake may have a body which houses an electric motor device. A rod, adapted to operate along an actuation direction, at a first end thereof, an actuation member of a drum brake and/or of a parking brake. A transmission device may operatively connect the electric motor device to a second end of the rod which is translationally integral with a screw. The screw may be engaged with a nut screw rotationally actuated by the transmission device. A pre-loading device may act in contrast on the screw. The pre-loading device may be compressively pre-loaded to exert a pre-load traction on the rod to offset variations of load on the rod. The pre-loading device may be configured to exert a thrust action on the rod following the annulment of axial clearances for an incremental compression of the pre-loading device with respect to the pre-load value.