Abstract:
A cable-and-pulley mounted overhead door includes a mechanism for sensing when the cable is tending to slacken and to automatically take-up the slack so as to thereby prevent the cable from disengaging from its pulley. When the overhead door includes an automated drive system, provision is further made for sensing when the take up of slack has progressed to a determined degree and to responsively turn off the automated drive system.
Abstract:
An opening and closing device opens and closes a sliding door by using a cable connected to the sliding door movably attached to a vehicle body. The opening and closing device has a base bracket, a motor, a transmission, a rotary drum, a first conduit fixed portion, a second conduit fixed portion, a first tension controller and a second tension controller. The base bracket is fixed to the vehicle body with bolts. The motor, the transmission, the rotary drum, the first and second conduit fixed portions and the first and second tension controllers are fixed to a disposition face of the base bracket. The first and second tension controllers are respectively disposed between the rotary drum and the first conduit fixed portion and between the rotary drum and the second conduit fixed portion, and applies tension to the cable fed from the rotary drum to take up the slack.
Abstract:
A horizontally sliding door or some other type of translating door includes a chain, cable, or some other elongate member for moving a door panel across a doorway, and the door also includes a sensor that monitors the tension or slackness of the elongate member to determine whether the door panel encounters an obstruction in the doorway. In some embodiments, a proximity sensor detects slackness in the elongate member by sensing when the member droops away from or toward the sensor. The elongate member can have some sections that are more elastic than others to increase the drooping action.
Abstract:
An opening-and-closing device opens and closes a sliding door by using a cable connected to the sliding door movably attached to a vehicle body. The opening-and-closing device has a base bracket, a motor, a transmission, a rotary drum, a first conduit fixed portion, a second conduit fixed portion, a first tension controller and a second tension controller. The base bracket is fixed to the vehicle body with bolts. The motor, the transmission, the rotary drum, the first and second conduit fixed portions and the first and second tension controllers are fixed to a disposition face of the base bracket. The first and second tension controllers are respectively disposed between the rotary drum and the first conduit fixed portion and between the rotary drum and the second conduit fixed portion, and applies tension to the cable fed from the rotary drum to take up the slack.
Abstract:
A window lifter comprises a cable, a window linkage driven by the cable, a fixed device and a cable redirecting device. The cable redirecting device is rotatably mounted on the fixed device and adapted to automatically lock onto the fixed device upon reaching a predetermined angular position. In addition, the cable redirecting device has a cable guiding portion which is not a figure of revolution about the axis of rotation relative to the fixed device. This window lifting mechanism provides a simple structure with few elements. Its assembly is also simple: the cable-redirecting device is rotatably mounted on the fixed device; it is thereafter rotated for tensioning the cable and then locked in a position where the cable is tensioned.
Abstract:
The window lifter of the invention comprises a window slider, a cable driving said window slider, a spring having a mobile cable tensioning portion and having a fixed cable return portion, both portions engaging the cable. This window lifter provides a simplified fabrication and a reduced number of parts.
Abstract:
A connection wire is connected to a part of a rear door popped up in a door-opening direction by an urging force. A pulley rotates responsive to a driving motor inside a wire-winding device to wind the connection wire thereon. In this manner, the rear door is automatically closed. The pulley is urged in a connection wire-winding direction by a power spring. A clutch is between the pulley and the driving motor. When the rear door is pressed by an operator's hands in a door-closing direction while the rear door is being closed, the pulley is rotated by the power spring, thus winding the connection wire thereon and preventing the connection wire from becoming loose. At this time, the connection between the pulley and the driving motor is cut off by the clutch. Thus, the pulley is rotated by the power spring freely and rapidly. In this manner, the rear door can be closed manually even while it is being closed automatically. Further, the connection wire can be prevented from becoming loose and from being sandwiched between the body of the vehicle and the periphery of a rear opening thereof.
Abstract:
A door operating apparatus for a vehicle back door is comprised of a wire, a winding mechanism, a guide pulley, a tension mechanism and a stopper. The winding mechanism is installed at one of a vehicle body and the back door and is connected to an end of the wire. The winding mechanism winds and releases the wire according to a command signal. The guide pulley is installed at the other one of the vehicle body of the back door with respect to the winding mechanism and supports the wire. The tension mechanism is connected to the other end of the wire and always pulling the wire. The stopper prevents the wire from being sent from the tension mechanism at a predetermined point. Therefore, even if the back door is manually opened and closed, the wire is kept in a tensioned state by means of the tension mechanism to enable smooth opening and closing during manual operations.
Abstract:
An overhead garage door arrangement in which a door leaf is moveable between open and closed position, and is installable against a ceiling for sliding up and down or that can be tilted or swung up and down for compensating against the weight of the door, at least one helical spring module is provided with a least two parallel-loaded helical tension springs that are arranged coaxially one within the other, and that are wound in opposite directions. The inner spring has an outside diameter which is smaller than the inside diameter of the outer spring. The oppositely wound coils of the coaxial springs cross each other. The two springs are pushed over a holding element which has a narrower first section for receiving the inner spring, and having a wider second section spaced from the first section for receiving the outer spring. The first and second sections of the holding element have edges with hook-shaped portions for grasping coils of the coaxial springs.
Abstract:
A powered sliding device for a sliding door comprises a wire drum rotated by a motor, a wire cable connecting the wire drum and the sliding door, a clutch mechanism provided between the wire drum and the motor. The clutch mechanism has a first coupling state for opening the door, a second coupling state for closing the door, and an uncoupling state. The wire drum has a cylindrical shape having a substantially closed end and an opposite open end, and an inner space formed inside thereof. The clutch mechanism is substantially provided within the inner space. The clutch mechanism is displaced into the first coupling state when the motor rotates in a given direction and displaced into the second coupling state when the motor rotates in a direction opposite to the given direction. The clutch mechanism is returned to the uncoupling state from the first coupling state when the motor is rotated in the opposite direction by a predetermined amount, and is returned to the uncoupling state from the second coupling state when the motor is rotated in the given direction by the predetermined amount.