Abstract:
A window regulator for raising a lowering a window pane in a motor vehicle. The regulator includes a scissors linkage including crossed lever arms connected at a pivot axis. The lever arms are attached at their upper ends to spaced points on the lower edge of the window pane and a cable is connected to the linkage at the pivot axis of the crossed arms. The cable is wrapped around a drum driven by a motor and is further trained over an upper pulley positioned above the pivot axis of the linkage and a lower pulley positioned below the pivot axis of the linkage. The regulator further includes a lower cross rail defining a rear pivot pivotally mounting the lower end of one of the lever arms, an intermediate pivot pivotally mounting the lower pulley, and a forward slot slidably mounting the lower end of the other lever arm. The arrangement is such that movement of the cable through a first distance results in movement of the windowpane through a second distance greater than the first distance, thereby providing a speed multiplier effect.
Abstract:
A cable window lifter with a driving unit includes a drive housing having an internal cavity therein. A cable drum is disposed within the internal cavity and has an internal gear provided along an internal portion of the drum. A pinion gear is disposed within the internal portion of the cable drum and includes teeth that engage the internal gear of the cable drum. The pinion gear is driven manually or by a motor. A support core is disposed between a portion of the internal gear of the cable drum and a portion of the pinion gear teeth. The support core prevents the lateral deflection of the pinion gear teeth out of the internal gear of the cable drum during imposition of an overload force onto the pinion gear, thereby assuring improved running quality of the driving unit and reducing the forces occurring in the driving unit.
Abstract:
An overhead door system employs counterweights which operate through cables connected to a drum which tapers from one end to the other so that the effective force acting on the door in the opening direction is reduced as the proportion of the weight of the door to be supported reduces. The system is adjustable readily to accommodate different types of doors having different opening characteristics in terms of the proportion of the doors weight that must be counterbalanced at different stages of the door opening movement. The drum has a pair of continuous grooves extending side-by-side throughout its length, the counterweight being independently supported by each of a pair of cables laid in these grooves.
Abstract:
Window raising device electrically and manually operated, of simple construction and providing for a firm retention of the window in order to obtain a burglar-proof window. A carriage fixed to the window and sliding in a guide is secured to both ends of a flat belt which slides on two return pads made of synthetic material. The belt is perforated or toothed in its portion passing on a toothed drum. The drum is slidingly mounted on a gear of a main sliding shaft which traverses an electrical driving mechanism. The sliding of the main shaft disengages the shaft from the motor drive but does not disengage its gear from the drum in order to provide a manual drive. The device is useable in a door or in a fixed part of a motor vehicle.
Abstract:
An improved cable spool arrangement is disclosed for use in powered vehicle door operating systems, or in other cable-actuated devices, having one or more actuating cables. In one form of the invention, a groove, or other open channel-like opening, is formed along a generally helical path on the cable spool, and preferably has a varying groove depth along at least a portion of the helical path in order to take up or pay out at least a portion of a cable at a correspondingly varying rate with respect to cable spool rotation and thus cause movement of a door or other movable member at a correspondingly varying rate with respect to cable spool rotation. A second, constant depth portion of the helical groove can also be provided for generally constant take-up or pay-out of a cable onto or from the constant-depth portion of the helical groove. Such varying radius groove arrangement can be used both in high displacement/low force cable movements and in low displacement/high force cable movements.
Abstract:
An improved cable spool arrangement is disclosed for use in powered vehicle door operating systems, or in other cable-actuated devices, having one or more actuating cables. In one form of the invention, a groove, or other open channel-like opening, is formed along a generally helical path on the cable spool, and preferably has a varying groove depth along at least a portion of the helical path in order to take up or pay out at least a portion of a cable at a correspondingly varying rate with respect to cable spool rotation and thus cause movement of a door or other movable member at a correspondingly varying rate with respect to cable spool rotation. A second, constant depth portion of the helical groove can also be optionally provided for generally constant take-up or pay-out of a cable onto or from the constant-depth portion of the helical groove.
Abstract:
A compound counterbalance system for window sashes and the like, comprising: a biasing spring for easing operation of a window sash and the like, the biasing spring being movable at an inherently variable rate of force; a first biasing force transmission having a fixed rate of movement transmission part connected to the biasing spring and a variable rate of movement transmission part connected to the window sash and the like, the variable rate of movement transmission part having a variable rate of operation predetermined to automatically compensate for the variability of the biasing spring to provide substantial constancy of the biasing force throughout an operating range; and, a cable for interconnecting the biasing spring, the first biasing force transmission, and the window sash and the like, whereby loading forces on the first biasing force transmission are substantially constant throughout the operating range. The system may further comprise one or both of a second biasing force transmission connected intermediately of the variable rate of movement transmission part and the window sash and the like, for increasing the effective range of movement of the biasing spring; and, an adjuster for changing the effective magnitude of the biasing force throughout the operating range.
Abstract:
A wire-driving device for a window regulator comprising a worm wheel rotatably contained in a housing, first and second pulleys arranged at both sides of the worm wheel respectively, means for transmitting torque from worm wheel to the pulleys and a worm meshing with the worm wheel and being driven by a motor, whereby first and second wires wound round the pulleys respectively are driven. The motor driven wire-driving device is thinner than conventional devices.
Abstract:
In a window lifter drive for motor vehicles a base member contains a cable drum to which a manual crank handle drive or a motor drive can be selectively secured. The base member includes a housing enclosing the cable driven with an opening on one side for a pinion on the crank handle drive. The housing has an opening on the opposite side for a driving claw part of the motor drive. Each of the pinion and the driving claw part can act directly on the cable drum.
Abstract:
A wire-driving device for a window regulator comprising a first pulley secured to a shaft supported rotatably to a casing, a second pulley secured to the shaft so as to be rotatable and axially movable along the shaft, and a wire of which both end portions are wound round said first pulley and second pulley respectively in the opposite direction to each other, the wire being capable to transmit power when the shaft is rotated, and ratchet teeth being provided on each of facing side surfaces of the pulleys, whereby elongation of the wire is automatically absorbed when the shaft is rotated to wind and unwind the wire round the pulleys.