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 method and device for determining torque applied to a motor of an automotive power window system includes a motor having a rotor mounted on a rotor shaft wherein the rotor and rotor shaft move linearly along an axial length of the rotor shaft in response to an applied torque. A ring magnet is mounted on the rotor shaft for generating a magnetic field as the rotor shaft rotates. A sensor, in communication with the ring magnet, senses a strength of the magnetic field based on a linear position of the ring magnet in relation to the sensor and generates a proportional voltage signal. A control circuit receives the voltage signal and detects a torque applied to the motor in response thereto.
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:
A garage door operator (10) is disclosed to have a front coupling (60) for a threaded screw (30) of the operator (10) and the rotor of the motor (20). The coupling (60) includes a first coupling device (62) that is a unitary coupling member with opposing recesses (68B, 68A) for receiving each of the rotor shaft (26F) and an end portion (74) of the screw (30). The unitary coupling member thereby connects the screw (30) to the motor (20) for torque transmission from the motor. The second coupling device includes a thrust containment device (92) that is supported on the screw (30), and an intermediate assembly (90) disposed between the thrust containment device and an end portion (44) of the guide rail (40) of the door operator. A retainer component (94) of the intermediate assembly restricts expansion of the thrust containment device.
Abstract:
A process for regulating the speed of rotation of an alternating current electric motor between two extreme angular positions of the rotor is characterized in that, on commissioning, the theoretical member (N) of complete periods (T) of the alternating current (1) to be supplied to the motor to drive it over such an angular displacement is determined, this theoretical number (N) is stored, on the basis of the chronological position (X) of these periods (T) complete in their total theoretical number (N), a table of the variations in the power supply to the motor required to ensure a predetermined speed is drawn up, in service, the actual instantaneous number (N') of complete periods of the alternating current between one extreme position (EI) and the other extreme position (EF) is counted, on the basis of the chronological position (X) of the actual member (N"), the power supply to the motor is aligned on the value given in the table for the corresponding thereotical member. The invention is applicable to the electrical and electrotechnical industries.
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.