A brake assembly with multiple telescoping structures comprises: a rotatable part configured to be rotated by an actuator; a fixed part comprising an outer ball nut fixed to a housing; a rotatable and translatable part comprising an outer ball screw and an inner ball nut, wherein the outer ball screw is operably coupled with the outer ball nut through first rolling bodies, and the rotatable and translatable part is operably coupled with the rotatable part and is rotatable relative to the outer ball nut and axially translatable relative to the rotatable part and the outer ball nut simultaneously by rotation of the rotatable part; a translatable part comprising an inner ball screw operably coupled with the inner ball nut through second rolling bodies and configured to be axially translated relative to the inner ball nut by rotation of the inner ball nut to move a brake pad assembly.

A brake assembly for an electric motor includes: a brake pad plate, a driver, and a shaft. The driver includes an inner driver part and an outer driver part, which are connected to one another by an intermediate layer, the brake pad plate having an inner tooth system, which meshes with an outer tooth system of the outer driver part so that the brake pad plate is connected to the driver in a torsionally fixed but axially displaceable manner, the inner driver part being connected to the shaft in a torsionally fixed manner.

A brake unit that allows the vehicle to evacuate safely in the event of brake failure while maintaining a braking performance. The brake unit is mounted on a vehicle together with a motor drive unit 2 to control brake force in accordance with a stroke of a brake pedal and a pedal force. Each brake system comprises: a stroke sensor; a pedal force sensor; a brake mechanism applying brake force to a driveshaft; a controller controlling the brake mechanism based on the stroke and the pedal force; and a powersource supplying electricity to the brake mechanism and the controller. The first controller 13 and the second controller support each other to control brake force.

A disc brake, preferably a compressed air-actuated disc brake, in particular for a motor vehicle, has a brake application mechanism with a brake rotary lever, at least one spindle unit having a threaded rod screwed into a bridge, and a brake caliper. The caliper frames an edge region of a brake disc. The brake caliper has a brake application portion and a caliper back which are connected together via tie bars. The brake application mechanism with the brake rotary lever is received in the brake application portion of the brake caliper from an application face side of the brake disc. The brake application portion of the brake caliper has a first region, in which the application mechanism and a force transmission portion of the brake rotary lever are arranged, a second region, which is formed as a lever housing, and a lever portion for the brake rotary lever. A support wall with a bearing portion, which forms a pivot bearing with a brake rotary lever axis that runs parallel to the brake disc, for the brake rotary lever is arranged between the first region and the second region.

An object of the invention is to provide a disc brake improved in reliability. In a disc brake, a first holder-side projection is formed on a holder, and a first cover-side recess that fits the first holder-side projection of the holder is formed in a cover. An elastic member is disposed between the first holder-side projection of the holder and the first cover-side recess in the cover.

An object of the invention is to provide a disc brake improved in reliability. In a disc brake, a first holder-side projection is formed on a holder, and a first cover-side recess that fits the first holder-side projection of the holder is formed in a cover. An elastic member is disposed between the first holder-side projection of the holder and the first cover-side recess in the cover.

An electromagnetic active brake which is de-energized in the brake standby state, includinga brake body (1), a brake device with at least two opposing brake shoes (9, 12) which are spaced from a component to be braked in the de-energized state of the active brake, and an electromagnet (5) which is arranged in the brake body (1) and the armature (6) of which interacts with a brake lever (2). The armature (6) of the electromagnet (5) is rigidly connected to a spring compressor (3) which is guided in the brake body (1) and which is moved by the armature (6) in the axial direction of the armature (6) when the electromagnet (5) is energized and in this manner clamps a spring (16) against an abutment (20) that interacts with the brake lever (2) and is arranged in an axially adjustable manner in the direction of the path of the spring compressor (3). The active brake according to the invention is highly energy-saving and thus economical.

An electromagnetic active brake which is de-energized in the brake standby state, includinga brake body (1), a brake device with at least two opposing brake shoes (9, 12) which are spaced from a component to be braked in the de-energized state of the active brake, and an electromagnet (5) which is arranged in the brake body (1) and the armature (6) of which interacts with a brake lever (2). The armature (6) of the electromagnet (5) is rigidly connected to a spring compressor (3) which is guided in the brake body (1) and which is moved by the armature (6) in the axial direction of the armature (6) when the electromagnet (5) is energized and in this manner clamps a spring (16) against an abutment (20) that interacts with the brake lever (2) and is arranged in an axially adjustable manner in the direction of the path of the spring compressor (3). The active brake according to the invention is highly energy-saving and thus economical.

A wheel module according to an embodiment includes a wheel, a motor, a shaft, a holding member and a brake. A tire is mounted on the wheel. The motor is arranged on the inner side of the wheel and includes a stator and a rotor. The shaft is fixed to the rotor coaxially with a rotation axis of the rotor and transmits rotation force of the rotor to the wheel. The holding member holds the stator. The brake restricts rotation of the shaft. One end portion of the holding member in the axial direction of the rotation axis of the rotor is fixed to and supported by a support member. The brake is on the opposite side to the wheel with the support member interposed therebetween. The shaft extends to an inner portion of the brake while passing through through-holes formed in the one end portion and the supporting member.

A wheel module according to an embodiment includes a wheel, a motor, a shaft, a holding member and a brake. A tire is mounted on the wheel. The motor is arranged on the inner side of the wheel and includes a stator and a rotor. The shaft is fixed to the rotor coaxially with a rotation axis of the rotor and transmits rotation force of the rotor to the wheel. The holding member holds the stator. The brake restricts rotation of the shaft. One end portion of the holding member in the axial direction of the rotation axis of the rotor is fixed to and supported by a support member. The brake is on the opposite side to the wheel with the support member interposed therebetween. The shaft extends to an inner portion of the brake while passing through through-holes formed in the one end portion and the supporting member.