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.

An electromagnetic brake for an electric motor includes a brake core having a coil bobbin holder in which a coil bobbin is housed and a connector insertion hole into which a connector is inserted. The coil bobbin includes plural terminal casings in each of which a terminal is set. The terminal has a first contact, which creates a connection with a winding engaged in catches of the terminal casing with the terminal inserted in the terminal casing, and a second contact which contacts an electrode of the connector inserted in the connector insertion hole with the terminal set in place in the terminal casing.

An electric motor that can facilitate a process of manufacturing the electric motor. The electric motor includes a substrate mounted with an electronic component, a first connector provided on a stator, the first connector configured to receive a power signal input to a coil and a communication signal with the electronic component, and a wiring structure communicably connecting the electronic component and the first connector. The wiring structure has a second connector mounted on the substrate, and a third connector fixed to the stator, the third connector configured to be connected to the second connector and configured to attach the substrate to the stator by an operation of moving the substrate toward the stator.

A system for fixing and/or emergency opening of a leaf of a door, a window or other closure comprises a drive having at least one mechanical energy storage device, at least one electric motor having a motor shaft operatively connected to the leaf, and control electronics for controlling the electric motor. The electric motor can be actuated by the control electronics both for damping of the leaf movements and for fixing of the leaf against a force of the mechanical storage device and/or for electric motor-driven emergency opening of the leaf.

The invention relates to an actuator with a modular system for creating a plug-in gearbox, wherein the modular system comprises at least one output gear wheel and at least one plug-in element, and wherein a plug-in gearbox with one to five stages can be created by the modular system

An actuator system includes a motor having a system of rotating shafts, a conversion arrangement including one of the rotating shafts and converting rotational motion to elongation, and a brake arrangement having one of the rotating shafts as a brake shaft, an electromagnet, at least one brake chamber formed between the brake shaft and an associated brake wall, and a magnetoactive brake member for each brake chamber. Each brake chamber includes a free-wheeling region for receiving the respective brake member. Each brake chamber includes a braking region with a decreasing radial distance between wall and rotation axis. Each brake member is arranged movably in the respective brake chamber in such a way that frictional contact can be formed with the brake shaft and brake wall. In an activated state, the electromagnet is configured to bring each brake member into the associated free-wheeling region.

A compact, high torque actuator includes a brushless motor, motor control electronics, an inner hollow tube to transmit rotation of an output plate to the input end of the actuator, thus allowing two absolute magnetic encoders to read an absolute position of the input and output of the actuator. The actuator is sealed to operate in fluid environment at high pressures.

A braking mechanism for an electric motor includes an electromagnet configured to be selectively energized in response to a control signal. The braking mechanism also includes a first braking member coupled for co-rotation with an output shaft of the electric motor. The first braking member is configured to movable relative to the output shaft between a first position and a second position. The braking mechanism also includes a second braking member rotationally fixed relative to the first braking member. When the electromagnet is energized, the electromagnet causes the first braking member to move from the first position to the second position. The first braking member engages the second braking member to brake the electric motor in one of the first position or the second position.

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 vehicle powertrain includes an internal combustion engine having a crankshaft coupled to a flywheel having a ring gear. The powertrain also includes a transmission having an input shaft coupled to the flywheel and a brake mechanism having a pivotable rocker configured to selectively inhibit crankshaft rotation. The brake mechanism also includes an electric actuator configured to drive a plunger in connection with a first end of the rocker, wherein the first end engages the ring gear in a first position to inhibit forward rotation and a second end of the rocker engages the ring gear in a second position to inhibit rearward rotation.