A method of actuating a door includes the steps of manually pivoting a door in a direction about a hinge to provide a manual input, detecting the manual input and energizing a motor to drive the door in the direction in response to the manual input. The manual door pivoting step includes exceeding a holding torque of a brake assembly that holds the door. The direction can be any direction for opening or closing the door.

A driver device for opening and closing a vehicle door, comprising an electric motor and a planetary gear gearbox, wherein the electric motor comprises an electric motor output shaft, and the planetary gear gearbox comprises a gearbox input shaft coaxially connected to the electric motor output shaft, and a gearbox output shaft coaxially connected to an end of a door shaft of the vehicle door to provide the door shaft with a torque required to open and close the vehicle door. Compared with vehicle door opening and closing functions in the prior art, the driver device can be installed by utilizing the space at the door shaft of the vehicle door, without affecting the integrity of the door body of the vehicle door. Furthermore, a vehicle door comprising the aforesaid driver device is further provided.

A drive device for moving a leaf, in particular a door leaf or a window leaf, with an electric machine including an, in particular single, stator and an, in particular single, rotor, which can be rotated about a machine axis, and with a gear coupled to the electric machine. The gear has a first gear element, which can be rotated coaxially with the machine axis, with the first gear element being connected to the rotor in a rotationally-fixed manner.

An opposed type sliding door device includes a center rail mounted on a center of a door in a longitudinal direction of the door. A center roller is mounted on a vehicle body and a lower rail is mounted on a lower portion of the vehicle body. A lower roller is mounted on the door and moves along the lower rail to pivot the door toward the outside of the vehicle. The lower roller includes a pinion gear which engages in a rack gear mounted on a lower portion of the lower rail, a planetary gear reducer coupled to an upper portion of the pinion gear, a swing bracket moving the door toward the outside with rotation of the pinion gear, and a mounting bracket having one end coupled to the door and another end coupled to the swing bracket.

The present invention addresses the problem of providing a one-way clutch and a one-way clutch-equipped rotating damper device with which it is possible to achieve size reduction. A pawl portion of a slide member comprises a withdrawal surface and an engaging surface. When a gear member rotates toward one side, as inner teeth and the withdrawal surface abut each other, the slide member slides in a sliding direction and the pawl portion is withdrawn from the inner teeth, whereby the gear member rotates independently of a rotor shaft. When the gear member rotates toward the other side as the inner teeth and the engaging surface abut each other, the inner teeth and the engaging surface become engaged, whereby the gear member and the rotor shaft rotate integrally.

A fire door operator for a rolling door includes a housing defining an axis. An outer main gear in the form of an annular ring is mounted within the housing for rotation about the axis and formed with exterior gear teeth and radially inwardly spaced interior teeth. Planet gears are meshed with the interior teeth and a sun gear is meshed with the planet gears for rotation about the axis. A carrier is secured to the planetary gears and coupled to the shaft. A lock normally locks the main gear in relation to the housing. A drive selectively rotates the sun gear and the carrier to transmit rotational power to a rolling door shaft when secured to the carrier. A releasing device selectively releases the lock to allow free rotation of the main gear and the carrier to allow a rolling door to be lowered under its own weight.

A power transfer device for a fire door operator having a pair of drive gears includes a bridge gear box having a drive shaft suitable for being coupled to an external drive. An idle spur gear is fixed to the drive shaft. A pair of spur gears are coupled to the idle spur gear to rotate in response to rotations of the idle spur gear. Spur gear shafts are coupled to the spur gears and arranged to be coupled to the drive gears of the operator so that rotation of the drive shaft by an external drive is translated to simultaneous rotations of the drive gears of the operator.

A guard locking element (4) actuatable by means of an electric drive (6). By means of the electric drive (6), the guard locking element (4) can be brought into a blocking position such that an actuator (2) of a safety switch is locked by said guard locking element. The guard locking element (4) is connected to the electric drive (6) by means of a coupling (11) such that a rotary motion of the electric drive (6) is converted into a purely translatory motion of the guard locking element (4).

A refrigerator and a method for controlling the same are disclosed, which may automatically open or close a door and a method for controlling the same. The refrigerator may automatically open or close door(s) of the refrigerator by controlling a motor. After lapse of a predetermined time after the door of the refrigerator has been closed, the refrigerator operates a motor with an output used when the door is not opened, such that the refrigerator may remove noise while simultaneously maintaining a constant door opening time when the door is opened. In addition, when the door opening signal time is detected, the refrigerator may immediately opens the door.

A tubular housing, a motor part that is provided in the housing, and an end damper and a damper member, one of each is provided on opposing ends of the motor part in an axial direction of the motor part and absorbs vibration, wherein the motor part is supported in a floating state by the housing via the end damper and the damper member.