Abstract:
A modular window assembly has a glazing pane, typically a slider assembly incorporating a vertically mounted transparent pane, which is slidably mounted in a rear-mounted frame. The slider pane is mounted for moving laterally back and forth between a closed and an open position. A drive subassembly comprises a drive drum and handle remotely mounted in the passenger compartment for moving the sliding pane back and forth between the open and closed positions. An anti-backdrive subassembly is connected to the drive drum and the handle to substantially prevent opening or closing of the slider pane by forces other than operation of the handle. The drive subassembly further comprises a mechanism for operatively connecting the handle to the sliding pane, for example, a drive cable mounted in the roof above a roof liner. When the handle is rotated in either direction, the drive drum wraps and unwraps corresponding segments of the drive cable, pulling the sliding pane between its open and closed position. When a force is exerted directly on the sliding pane, the anti-backdrive device substantially prevents rotation of the drive drum and correspondingly, movement of the sliding pane.
Abstract:
A tilt adjustment mechanism having an upper housing, a lower housing and a shaft assembly is disclosed. The shaft assembly receives the gears which are pressed on either end of shaft. The shaft fits through locating slots in the lower housing. Each of the gears are activated by internal gears located on each side of the upper housing. The internal gears are integrally formed with the upper housing. The upper housing is hinged on the lower housing and can rotate 20 degrees. The shaft assembly mechanism provides a torsion bar function to insure that the upper housing moves evenly with respect to the lower housing. Even motion in the upwards and downwards directions of the housing is provided by even rotational torsional motion and opposite rotational torsional motion of the shaft assembly of the tilt adjustment mechanism. The shaft assembly mechanism decouples the frictional load in the two different rotational directions about its shaft. This permits the adjustment of the forces to optimal levels in both directions. A relatively high force is desired to move the upper housing in a downward direction. This prevents the operator's touches on a display tablet, mounted to the upper housing to cause the tilt adjustment mechanism to move in the downward direction. A relatively low force is required to move the tilt adjustment mechanism in the upwards direction.
Abstract:
A tilt adjustment mechanism having an upper housing, a lower housing and a shaft assembly is disclosed. The shaft assembly receives the gears which are pressed on either end of shaft. The shaft fits through locating slots in the lower housing. Each of the gears are activated by internal gears located on each side of the upper housing. The internal gears are integrally formed with the upper housing. The upper housing is hinged on the lower housing and can rotate 20 degrees. The shaft assembly mechanism provides a torsion bar function to insure that the upper housing moves evenly with respect to the lower housing. Even motion in the upwards and downwards directions of the housing is provided by even rotational torsional motion and opposite rotational torsional motion of the shaft assembly of the tilt adjustment mechanism. The shaft assembly mechanism decouples the frictional load in the two different rotational directions about its shaft. This permits the adjustment of the forces to optimal levels in both directions. A relatively high force is desired to move the upper housing in a downward direction. This prevents the operator's touches on a display tablet, mounted to the upper housing to cause the tilt adjustment mechanism to move in the downward direction. A relatively low force is required to move the tilt adjustment mechanism in the upwards direction.
Abstract:
The invention concerns an electric-motor drive system for a bowden-cable window lifter. The system includes a braking spring in the form of a helical spring in the manner known from manual bowden cable window lifters. This is made possible by the inclusion on the worm wheel of an arcuate slot crossed by a tab affixed to the cable reel and extending to the other side of the worm wheel into the clearance of a ring affixed to the worm wheel. The ring and the tab are enclosed by the helical spring of which the bent-off ends each enter the gap between the tab and ring. These components (ring, tab, and spring) are combined to one side of the worm wheel, and achieve the locking of the cable mechanism--by expanding the spring against a surrounding braking surface--when the mechanism is actuated in reverse by movement of the window pane. Owing to this braking mechanism it becomes possible to select the pitch of the worm and worm-wheel at the most advantageous angle irrespective of the otherwise required self-locking between the worm and worm wheel ordinarily used to stop undesired pane movement.
Abstract:
There is disclosed a hinge assembly that has a pintle and two plates that can rotate about the axis of the pintle. The first plate is irrotatably affixed to the pintle. The second plate is part of a friction element which also includes a band having a plurality of turns helically disposed about the pintle. Between the other end of the band and the second plate there is a spring that tightens the band about the pintle. The band is flexible enough so that it does not grip the pintle without the force of the spring. Frictional force is developed between the band and the pintle that opposes movement of the second plate in a direction that tends to tighten the band about the pintle. Movement of the second plate in the opposite direction tends to loosen the band's grip on the pintle so that very little frictional force is developed.
Abstract:
A cylindrical bushing member includes at least one groove of a depth and width to fully accommodate a coil spring within the inner periphery of the bushing with the spring, when relaxed having an inner diameter slightly larger than the diameter of a shaft member projecting axially therethrough. The coil spring is fixed relative to the bushing so as to be non-rotatable relative thereto. The coil spring has at least one end in contact with the periphery of the shaft for frictional engagement therewith such that relative rotation of the bushing and the shaft in one direction causes multiple turns of the coil spring to engage the periphery of the shaft and to snub the spring and to cause a driving member to rotate a driven member as fast as that of the driving member, but permit the driven member to rotate faster and free-wheel to overrun the driving member. Additional turns of wire of the coil spring may be wrapped about the outer periphery of the bushing within an outer peripheral groove with the free end thereof engaging the outer periphery of the outer peripheral groove wall to snub the outer turns of spring wire to effect a grip between the outer turns of the wire coil spring and the bushing during clutching operation of the clutch.
Abstract:
A drive unit for adjusting window panes, sunroofs, and seats in a vehicle has a reversible electric motor behind which is inserted a worm gear with a worm shaft. To prevent an undesired or unauthorized adjustment of a motor vehicle part, a brake device is provided. The brake device has a mechanical, one-way brake element with which the worm shaft may be coupled by an axial displacement. In order to reduce the effect of the brake device on the worm shaft when the window pane is adjusted by the electric motor, the brake element is the rotatable part of a rotation limiting device and, in the axial direction, it is supported on a stop.