Abstract:
A position detecting device includes a ring gear that is disposed on an outer side of an output shaft of a motor and rotates with the rotation of the output shaft, fixed contact terminals fixed to a cover plate, and a rotary contact terminal provided on a ring gear. As the ring gear rotates, the fixed contact terminals and the rotary contact terminal are brought into contact with each other, thereby detecting a rotational position of the output shaft. The position detecting device further includes a clutch mechanism for preventing the rotation of the ring gear by more than a predetermined degree while permitting the rotation of the output shaft of the motor in the state of contact. Hence, even if the output shaft of the motor is rotated sufficiently, this state of contact is maintained.
Abstract:
Door operator for commercial and domestic use with swing-mounted doors are disclosed. Each operator employs a variable-speed d.c. motor as prime mover, and a vertically oriented door-driving operator output shaft journalled in a transmission having a compact transmission housing which includes shock mounts for mounting of the transmission housing and operator within structure associated with the door. The transmission provides speed reduction coupling of the motor drive shaft to the operator output shaft with substantially right-angled relationship between their axes of rotation. The transmission includes a drive gear, to which the motor drive shaft is coupled by miter gear arrangement of different types, with the drive gear in coaxial relation with the operator output shaft but independently rotatable about it. Epicyclic sun-and-planet gear drive mechanism of specialized design is coaxial with the operator shaft and includes planet gears driven for epicyclic movement about the axis of the operator output shaft, providing speed reduction coupling of the drive gear to the output shaft. Different possible spring arrangements, including rack-gear operated spring modules of interchangeable character, are used for resiliently coupling restorative force to the operator output shaft upon rotation thereof in at least one direction.
Abstract:
The invention relates to a method, and to an arrangement, for optimizing the operation of a door closer at different phases of opening and closing of the door. The door closer is provided with a force transmission shaft (1) turning in accordance with the movements of the door and with a spring element (2) operationally connected thereto. The opening of the door takes place against the force of the spring element (2). According to the invention, at the closing phase of the door the energy of the spring element (2), exceeding the return force of the spring element (2) needed to accomplish the desired closing movement of the door, is recovered through simultaneous braking of the closing movement of the door for the main part of the closing movement. When the door is only somewhat open any more, preferably under 5.degree., a final force securing the closing of the door is accomplished by making use of said recovered energy. For putting the method into practice, the door closer is provided with rotor (4), stator (5) and energy storing device (7), arranged to serve as an electric generator or as an electric motor as required.
Abstract:
Apparatus for automatically closing the deck lid of an automotive vehicle wherein the deck lid is manually moveable between open and closed positions and carries a latch operable to latch the lid closed and release the lid for opening movement. The apparatus of this invention is advantageous because it will not interfere with manual opening and closing of the lid. It includes a drive mechanism connected to the deck lid and operable when actuated from a remote location such as a switch inside the passenger compartment of the vehicle, to move the deck lid downwardly to a nearly closed position. A moveable striker inside the trunk compartment is engageable with the latch in the nearly closed position of the deck and is operable to pull the deck lid downwardly to the closed position. In one embodiment of the invention the deck lid is also automatically opened by reversing the sequence of operation for closing in response to switch actuation to a remote location such as within the passenger compartment of the vehicle.
Abstract:
A drive mechanism for a vehicle sunroof having a roof panel, the drive mechanism providing for accurate and reliable shut-off of the sunroof drive motor when the roof panel reaches either its fully closed or fully open position. The drive mechanism includes a rotatable cam plate which is mounted directly on the housing of the drive mechanism, the drive mechanism being installable as a unit in the sunroof assembly and the cam plate actuating limit switches for controlling the motor.
Abstract:
A closure operator to effect remote, failsafe opening and closing of a damper, particularly a multi-fold or interlocking slat curtain damper. A frame or shell envelops a damper curtain which is capable of opening and closing an air passage through the frame or shell. A housing containing an electromechanical curtain operator is optionally positioned within or outside the frame or shell. The curtain is lifted by a tray connected to two wire cables, in response to the winding of the cable upon a takeup drum located within the housing. The principal components of the electromechanical curtain operator are a motor, planetary gear train and its associated latch mechanism which form a clutch, cable drum, speed control brake, and limit switch assembly. All of the foregoing components are protectively contained within an operator housing which is formed with an irregular shaped projecting finger which engages a mating opening formed in a damper supported bracket or in a baffle which isolates the curtain in its open position.