Abstract:
A powered actuator for moving a motor vehicle closure panel from a closed position to an open position and method of construction thereof. Powered actuator includes an electric motor configured to rotate a driven shaft and a gearbox coupled to the driven shaft. An extensible member extends through the gearbox to a proximal end on one side of the gearbox for attachment to one of a vehicle body or the closure member and to a distal end on an opposite side of the gearbox. Extensible member is configured to move between retracted and extended positions in response to rotation of the driven shaft. A contamination cover enshrouds the extensible member between the gearbox and the distal end of the extensible member. Contamination cover moves between an axially extended state and an axially retracted state while the extensible member moves between the respective retracted position and the extended position.
Abstract:
A sliding power lift and locking assembly for lifting and locking an object includes a motor, a first drive shaft, a first drive block assembly, a first drive housing, and a link arm. The first drive shaft has a body and a cylindrical axis and is rotationally driven by the motor. The first drive block assembly includes an aperture configured to engage the body of the first drive shaft, a latch dog with a first slot configured to engage a dog catch pin associated with the object, and a slider. A portion of the first drive housing and a portion of the first drive block assembly are provided in a track of the first drive housing, and the track of the first drive housing is configured such that the first drive block assembly is configured to move in a path relative to the first drive housing. The link arm includes a first end and second end. The first end of the link arm is configured to move with the slider of the first drive block assembly, and the second end of the link arm is configured to connect to the object.
Abstract:
A linear mechanical drive with precise end of travel load positioning includes a drive shaft having a threaded portion intermediate two non-threaded portions, reversible motor drive turning the shaft, a load carrier element threaded on the shaft for pulling the load along the shaft, the carrier disengaging at the non-threaded portions thereby to precisely determine the end position of the carrier irrespective of continued drive shaft rotation. The carrier reengages to the threaded portion upon reversal of drive shaft rotation, and a load connector on the carrier element is adjustable for precisely positioning the load at one or both of the end of travel positions. Other features disclosed protect the drive against excessive mechanical wear and disengage the load from the carrier element for strain relief.
Abstract:
A sliding door of the type employed in public transport vehicles and driven by an electric motor comprises at least one door-leaf coupled with a nut mounted on an endless screw which is driven in rotation in order to open and/or close the door. The nut is displaced in translational motion within a guide which prevents rotational motion. The locking device comprises means for interrupting the translational displacement of the guided nut at the end of travel and for permitting angular rotation of the nut with the endless screw, means for limiting the angular displacement of the nut and finally means for limiting the translational motion of the nut if it is displaced along the endless screw and no longer engaged in the guide.
Abstract:
Rotary locks used on transit vehicle doors (2) when opened and closed by a rotating helical door drive member (40). In a preferred embodiment, a first lock utilizes a negative thread portion (51) of the helical drive (40). A second lock utilizes a rotating lock pawl (22) and stop (23). The drive (40) and lock can be used to operate door systems with and without separate door hangers. Compensation for camber variations in car structure is provided through the use of spherical mounts or drive member journals (35, 38).
Abstract:
Dispositif d'actionnement électromécanique pour porte à déplacement coulissant comprenant un moteur entraînant une vis sans fin (1) sur laquelle est monté un écrou (3) relié à la porte à déplacer et retenu en rotation par une glissière (5) présentant un décrochement (16) à l'endroit correspondant à la fin de la course de la porte. Ce décrochement autorise une certaine rotation de l'écrou et constitue une butée (17) empêchant le déplacement en arrière de l'écrou lorsque on agit sur lui par l'intermédiaire de la porte. L'écrou est constitué de deux parties (31, 32) solidaires axialement l'une de l'autre, montées rotativement l'une autour de l'autre et conformées de manière à assurer leur solidarisation mutuelle en rotation avec un important jeu angulaire. Le dispositif a pour but d'empêcher un déverrouillage intempestif de la porte fermée par l'armage élastique en torsion de la vis sans fin.