An example electric motor includes a housing, a stator fixed relative to the housing, a rotor, a brake assembly, a first bearing, and a second bearing. The rotor has a hub portion, a cylindrical portion, and a disk portion. The hub portion of the rotor has a first end, a second end, and a through hole therethrough. The brake assembly is fixed relative to the housing and configured to selectively couple the disk portion of the rotor to the housing. The first bearing is mounted between the first end of the hub portion of the rotor and the disk portion of the rotor. The second bearing is mounted between the second end of the hub portion of the rotor and the disk portion of the rotor.

To secure a favorable photographing state without causing an increase of power consumption. A blade opening/closing apparatus includes a magnetic driving portion including a coil to which a driving current is supplied and a magnet that is rotated along with energization to the coil; a driving body that includes a to-be-locked portion and is operated by the magnetic driving portion; an opening/closing blade that opens/closes an aperture by an operation of the driving body; and a lock portion that sets a locked state of the opening/closing blade by engaging with the to-be-locked portion, the setting of the locked state and a release of the locked state being carried out in accordance with a rotation position of the magnet. Accordingly, since the lock portion engages with the to-be-locked portion to thus set the locked state and unlock the locked state in accordance with the rotation position of the magnet and locking with respect to the opening/closing blade is not performed by a magnetic force of the magnet, a favorable photographing state can be secured without causing an increase of power consumption.

A motorized joint unit of a mechanism comprises a rotor assembly and a stator assembly operatively assembled and configured for being secured to respective links of the mechanism. The rotor assembly and the stator assembly respectively include a rotor and a stator concurrently operable to cause a rotation of a rotor of the rotor assembly relative to a stator of the stator assembly about a rotational axis, a receiving volume delimited by one of the rotor assembly and stator assembly, the rotational axis passing through the receiving volume. A brake assembly is located at least partially in the receiving volume and comprising a brake plunger having a brake surface for brakingly engaging with a corresponding surface of the rotor assembly, the brake plunger displaceable in translation in the brake assembly, and a solenoid coil actuatable to displace the brake plunger against the rotor assembly.

An electronic actuator for an elevator safety brake system, the actuator having: an electromagnet assembly; and a first magnet assembly configured for being retracted from engagement with a rail depending on an energized state of the electromagnet assembly, the first magnet assembly including: blocks spaced apart from each other, respectively defining block bodies, and elongated block legs respectively extending aft from the block bodies; and a first magnet is disposed between the block bodies; wherein the electromagnet assembly includes: a core that defines: a core body extending between core ends that are spaced apart from each other; and core stub legs respectively extending forward from the core ends that are positioned adjacent to the elongated block legs when the first magnet assembly is retracted; and a coil winding wound about bobbins that are placed over the core body, the elongated block legs are longer than the core stub legs.

The invention relates to an elevator comprising an electric linear motor comprising at least one linear stator designed to be located in a fixed correlation to an environment, particularly building, and at least one mover designed for connection with an elevator car to be moved and co-acting with the stator to move the car, which motor comprises a stator beam supporting said at least one stator, which stator beam has at least one side face carrying ferromagnetic poles of said stator spaced apart by a pitch, and which mover comprises at least one counter-face facing said side face(s) of the stator beam, in which counter-face electro-magnetic components of the mover are arranged to co-act with the ferromagnetic poles mounted on the stator beam, which elevator comprises an elevator brake. According to the invention the side face of the stator beam facing the mover and/or the counter face of the mover facing the side face of the stator beam comprise(s) a brake surface which form(s) the brake interface of the elevator brake.

An electric actuator comprises a housing and an output shaft reciprocatingly received by the housing. There is a screw assembly disposed within the housing and coupled to the output shaft. The screw assembly includes a plurality of annular rollers and a central screw received by the annular rollers. The annular rollers are rotatable about the central screw. There is a motor which includes a stator and a rotor. The rotor has an inner bore which engages the annular rollers. Rotation of the rotor causes the central screw to translate axially relative to the rotor and the output shaft to reciprocate relative to the housing.

A device for locking a leaf of a door or the like comprising at least one electric motor operated as a generator having a motor shaft which is operatively connected to the leaf via a force transmission unit. The motor terminals of at least one electric motor operated as a generator are connected in this regard to a damping circuit for damping the leaf movements. The motor shaft of at least one electric motor operated as a generator is acted on by a brake unit to lock the leaf.

A system for the fixing and/or emergency opening of a leaf of a door, a window or the like comprises a drive having at least one mechanical energy storage device, which is charged by an opening movement of the leaf and is discharged by a closing movement of the leaf, at least one electric motor, the motor shaft of which is operatively connected to the leaf, and open-loop and/or closed-loop control electronics for actuating the electric motor. The electric motor can be actuated by means of the open-loop and/or closed-loop control electronics both for generator-like damping of the leaf movements and for fixing of the leaf against the force of the mechanical storage device and/or for electric motor-driven emergency opening of the leaf, in that the electric motor additionally can be supplied with external electrical energy from an external device, in particular such as a smoke detector control unit, a smoke and heat extraction control unit or the like, for the fixing and/or emergency opening of the leaf.

A robot includes an arm, a motor that drives the arm, an amplifier including a drive circuit for driving the motor, and a first brake that is a non-electromagnetic brake braking the motor.

An electric wheel hub, comprising a wheel hub (1) and an inner ring gear (2). The inner ring gear and the wheel hub are fixed coaxially and rotate synchronously. A drive motor is provided within an inner cavity of the wheel hub. A motor shaft of the drive motor has one end fitting to the inner ring gear via a planetary reduction mechanism, and the other end provided with an electromagnetic braking mechanism. The wheel hub of the present invention has advantages of reducing the weight of a drive wheel, lowering manufacturing costs, etc. Also disclosed is a drive wheel.