Actuators can include a line replaceable brake unit including a window for inspecting brake elements. In particular, an actuator system includes a modular brake component having an integral brake housing configured to mount to a motor, wherein the integral brake housing is environmentally sealed; a drive coupling within the integral brake housing configured to mechanically couple with an output shaft of the motor; one or more braking disks arranged in the integral brake housing configured to brake movement of the drive coupling when engaged; an armature in the integral brake housing configured to engage or disengage the one or more braking disks with the drive coupling; and an inspection window through the integral brake housing aligned with at least a portion of the one or more braking disks. A method for implementing an actuator system is disclosed as well.

A vehicle-mounted apparatus includes: a motor unit configured to apply a rotational driving force to a wheel of a vehicle and including a drive motor and a speed reducer that reduces a speed of rotation of an output shaft of the drive motor; and a friction brake that reduces rotation of the wheel. The friction brake includes: at least one rotation disc provided so as to be rotatable integrally with the output shaft; a housing that is a non-rotatable member; at least one friction plate held by the housing so as to be movable relative to the housing in the axial direction such that rotation of the at least one friction plate relative to the housing about the axis is restricted; and a pressing device that presses the at least one friction plate against the at least one rotation disc.

A motor includes a brake diagnostics system with sensors to assess the brake assembly condition. Acoustic or other vibration sensors provide vibration data that is compared to known vibration spectrum data to compare the condition of the brake assembly to a properly functioning brake assembly. The brake diagnostics system monitors current flow in the brake coil to assess the condition of the brake assembly. The sensed brake coil current is compared to known coil current spectrum data to compare the condition of the brake assembly to a properly functioning brake assembly. The voltage input to the brake coil is varied depending upon the current sensed in the brake coil to minimize heat in the brake coil. The motor also includes a resilient layer of thermally conductive material located between the brake assembly and the housing that provides a continuous, uninterrupted thermal pathway between the brake assembly and the motor housing.

Various systems and methods are provided for wet brake systems for vehicles. In one embodiment, a wet brake system for a vehicle includes a drive shaft, a housing including a brake compartment and a reservoir axially offset from the brake compartment along the drive shaft, a brake plate assembly including an end plate arranged within the brake compartment, a lower channel formed between the end plate and the housing and arranged at a drain end of the housing, and an upper channel formed between the end plate and the housing, opposite to the lower channel across the drive shaft. Coolant/lubricant within the housing, such as oil, may flow out of the brake compartment during conditions in which the drive shaft is rotated, and may flow into the brake compartment during conditions in which the drive shaft does not rotate or is relatively stationary.

Disclosed are a brake apparatus, a wheel body assembly and a rollator. The brake apparatus includes a shaft body, a housing, a magnetic induction mechanism, a rectifier mechanism and an adjustment mechanism, the housing is rotatable relative to the shaft body, the magnetic induction mechanism is used to generate resisting force opposite to a rotation direction of the housing or the shaft body by a magnetic field reaction when the housing rotating relative to the shaft body, the rectifier mechanism is used to rectify a current of the magnetic induction mechanism, the adjustment mechanism is used to adjust the magnitude of the resisting force generated by the magnetic induction mechanism. By setting the rectifier mechanism to rectify output of the multiple wires of the magnetic induction mechanism, the structure of the adjustment mechanism can be simplified, making the overall structure of the brake apparatus simpler.

A wet brake includes a housing, non-rotatable brake discs, rotatable brake discs, a parking lever, a piston, a plate, and a connector. The non-rotatable and the rotatable brake discs are disposed in engagement with the housing and an outer peripheral surface of a rotary shaft, respectively. The piston, the plate, and the rotary shaft are accommodated in the housing. The piston is configured to be pushed by the parking lever toward the non-rotatable and the rotatable brake discs. The plate is in contact with one of the non-rotatable brake discs or one of the rotatable brake discs. The connector is disposed at a position between the piston and the plate. The housing has a recess that is formed in an outer peripheral surface of the housing at a position corresponding to the position of the connector. An outer diameter of the connector is smaller than that of the piston.

A motor includes a brake diagnostics system with sensors to assess the brake assembly condition. Acoustic or other vibration sensors provide vibration data that is compared to known vibration spectrum data to compare the condition of the brake assembly to a properly functioning brake assembly. The brake diagnostics system monitors current flow in the brake coil to assess the condition of the brake assembly. The sensed brake coil current is compared to known coil current spectrum data to compare the condition of the brake assembly to a properly functioning brake assembly. The voltage input to the brake coil is varied depending upon the current sensed in the brake coil to minimize heat in the brake coil. The motor also includes a resilient layer of thermally conductive material located between the brake assembly and the housing that provides a continuous, uninterrupted thermal pathway between the brake assembly and the motor housing.

Actuators can include a line replaceable brake unit including a window for inspecting brake elements. In particular, an actuator system includes a modular brake component having an integral brake housing configured to mount to a motor, wherein the integral brake housing is environmentally sealed; a drive coupling within the integral brake housing configured to mechanically couple with an output shaft of the motor; one or more braking disks arranged in the integral brake housing configured to brake movement of the drive coupling when engaged; an armature in the integral brake housing configured to engage or disengage the one or more braking disks with the drive coupling; and an inspection window through the integral brake housing aligned with at least a portion of the one or more braking disks. A method for implementing an actuator system is disclosed as well.

A brake (1) with a device for ascertaining a wear limit, the brake (1) comprising: a pressure piece unit (10) comprising a pressure piece (12) designed to press at least one first brake body (3) and at least one second brake body (4) against each other for applying the brake; and a sensor (20) designed to detect a positional relationship between itself and a detection surface (11) of the pressure piece unit (10), wherein if the brake (1) has not reached its wear limit, the positional relationship between the sensor (20) and the detection surface (11) does not change during a movement of the pressure piece (12) in a first direction, and if the brake (1) has reached its wear limit, the positional relationship between the sensor (20) and the detection surface (11) changes during the movement of the pressure piece (12) in the first direction.

A brake assembly includes a brake, an adapter, and a transmission. The adapter has an adapter housing, which is connected to a housing part of the transmission, and a flange part of the brake is connected to the adapter housing on the side of the adapter housing facing away from the transmission. A cover part of the brake is connected to the flange part, and at least one bearing for rotatably mounting the input shaft of the transmission is accommodated in the adapter housing.