An electromagnetically actuable brake device includes: a coil shell, in particular of the solenoid, an armature disk, which is connected to the coil shell in a torque-proof yet displaceable manner, a sensor having a sensor housing, a spring part, and a screwed cable gland. The coil shell has a stepped through bore, the sensor housing of the sensor has a stepped configuration, the screwed cable gland is situated at an end of the bore, in particular is screwed into a threaded section of the bore, the spring part is situated in the bore between the screwed cable gland and the sensor housing, the spring part is braced on a step of the sensor housing on one side and on the screwed cable gland on the other, and the sensor housing is pressed against a step of the bore, in particular by the spring part.

A drive unit for operating a device, in particular a device in a vehicle and a method for operating a drive unit are provided. An electrical drive assembly and a break assembly are combined and arranged together in a common housing. The breaking assembly could be a mechanical breaking assembly or an electrical break assembly. The break assembly automatically locks the shaft of the electrical drive assembly and thus provides self-locking capabilities.

A motor drive unit having an inboard brake in which a lateral weight distribution is balanced is provided. In the motor drive unit, output torque of a drive motor is distributed to a right driveshaft and a left driveshaft via a drive gear a drive gear fitted onto an output shaft thereof. A brake rotor is also fitted onto the output shaft to be rotated integrally therewith. A brake device stops rotation of the drive gear by engaging the brake rotor with a brake stator that is allowed to rotate relatively to the brake rotor but restricted to rotate in a rotational direction of the brake rotor. The brake device is disposed on an opposite side of the drive motor across the drive gear.

The invention discloses a roller shutter equipment, a motor and a brake device, The brake device is used for braking motor rotor. The brake device includes a permanent magnet and a magnetic conductor, one of the permanent magnet and the magnetic conductor is used for connecting the motor rotor and the other one is used for connecting the motor stator. The permanent magnet includes N magnetic poles, the magnetic conductor includes N slots, the brake device constitutes a N poles N slots structure, where N is an integer greater than 1. The brake device is applied to motor and roller shutter equipment, it realizes rapid braking, at the same time it can effectively reduce the vibration frequency of the motor and avoid the vibration frequency of the cover shell of the roller shutter equipment. It avoids resonance, ensures normal operation of the motor and reduces motor noise during operation.

An electric motor adapted to be mounted in a wheel of a vehicle includes: a stator provided with at least one winding; a rotor provided with at least one permanent magnet facing towards the at least one winding, wherein the rotor surrounds, at least partly, the stator and rotates around it; a braking system for slowing or stopping the motion of the rotor relative to the stator. The braking system further includes: a second stator enveloping at least one portion of the rotor and provided with a coil adapted to generate, when activated, a magnetic field; a magnetorheological fluid positioned in an air gap obtained between the second stator and the at least one portion of the rotor, wherein the magnetorheological fluid increases its viscosity when it is subjected to the magnetic field of the coil and exerts a braking force between the rotor and the second stator.

Systems and methods for braking a power tool motor using a magnetically susceptible fluid. One power tool includes a housing, a motor within the housing, a drive train coupled to the motor, a magnetically susceptible fluid located within the drive train, and an inductor within the housing and configured to introduce a magnetic field to the magnetically susceptible fluid. An electronic controller is connected to the motor and to the inductor and is configured to receive a signal to initiate a braking process, generate, in response to the initiation of the braking process, a control signal for the inductor, and provide the control signal to the inductor to control a viscosity of the magnetically susceptible fluid located within the drive train.

According to an embodiment, it is an electrical motor arrangement comprising a first rotation element for providing a first rotational movement, and a second rotation element for providing a second rotational movement, and wherein in a first configuration the first rotation element is configured as a stator and the second rotation element is configured as a rotor, and wherein in a second configuration the first rotation element is configured as the rotor and the second rotation element is configured as the stator of the electrical motor arrangement, wherein the electrical motor arrangement is configured to operate alternately in the first configuration and the second configuration; wherein at least one of the first rotational movement and the second rotational movement is provided to a transmission arrangement, and wherein the electrical motor arrangement is configured for providing a rotational movement for a transmission of a vehicle.