Abstract:
A ring gear (82) of a planetary gear speed reducer (80) is fixed to a casing (31) provided with a core metal (31) fixed to a vehicle panel via a rubber damper (92). Therefore, the driving unit can be reduced in size through adoption of a speed reducer (80) formed of gears (82) made of spur gears, and the rubber dumper (92) can suppress low frequency vibrations which are transmitted from the speed reducer (80) to the vehicle panel. Therefore, the vehicle body of the vehicle having a low characteristic frequency is prevented from resonating with the incoming low frequency vibrations to generate noises which are transmitted to the vehicle interior, and which give an occupant an unpleasant feeling.
Abstract:
A revolving door with a drive unit drivingly connected to a turnstile of the revolving door. The revolving door has at least one glass ceiling element. The drive unit is gearlessly constructed and has an electronically commutated multipole motor. The multipole motor is arranged at the glass ceiling element.
Abstract:
A drive train for a pivotable flap of a motor vehicle includes a holding device which can hold the flap in at least one open position, a first element which can be driven by a drive motor, and a second element connected to the pivotable flap to pivot the flap in response to movement of the first element. When the second element is moved along a path of motion relative to the first element counter to a specific spring force, a sensor generates a signal indicating relative motion of the elements, and a control device releases the holding device in response to the signal, whereby the flap can be moved manually by applying a force counter to the spring force.
Abstract:
A locking arrangement for a door system of a transit vehicle includes a combination of a lock mechanism and an electromagnetic brake. The lock mechanism enables positive locking of at least one door but does not require substantial contact between moving and stationary lock elements. The lock mechanism is connected with the manual release means for door opening during an emergency. The electromagnetic brake maintains door seal compression in the closed and locked condition which improves sealing capabilities and provides for reliable lock mechanism operation. Such combination provides locking redundancy and meets various requirements regarding annunciation and manual release operation.
Abstract:
A garage door operator is disclosed to have a front coupling for a threaded screw of the operator and the rotor of the motor. The coupling includes a first coupling device that is a unitary coupling member with opposing recesses for receiving each of the rotor shaft and an end portion of the screw. The unitary coupling member thereby connects the screw to the motor for torque transmission from the motor. The second coupling device includes a thrust containment device that is supported on the screw, and an intermediate assembly disposed between the thrust containment device and an end portion of the guide rail of the door operator. A retainer component of the intermediate assembly restricts expansion of the thrust containment device.
Abstract:
Regulation of the speed of an electric motor is accomplished by counting the number of periods of AC current and modulating the pulses supplied to the motor. The speed of the motor is regulated according to a speed reference curve. The technique is especially suitable for operating a motor which controls a door.