Abstract:
La porte sectionnelle comporte un tablier (4) compensé et un moyen d'entraînement de ce tablier, comprenant notamment une chaîne sans fin verticale (54) tendue entre deux pignons (52), (53). La chaîne, solidaire du tablier (4), s'engrène avec un pignon (55) accouplé par un embrayage à un moteur d'entraînement (50) installé à hauteur d'homme. La liaison mécanique (8) entre la chaîne (54) et le tablier (4) est telle qu'elle induit un temps de retard dans l'entraînement du tablier vers le haut depuis sa position basse verrouillée. Il en résulte une course à vide de la chaîne. Pendant cette course, une action de déverrouillage est appliquée par le moyen d'entraînement (5) sur un mécanisme de verrouillage du tablier en position basse. La liaison mécanique (8) est guidée par une tapée (30) attenante au rail de guidage (31) du tablier et ladite liaison est solidarisée au panneau inférieur (40) du tablier par une articulation d'axe BB'.
Abstract:
A power closing assembly operates a closure panel hingedly secured to a motor vehicle. The power closing assembly includes an actuator mounted to the motor vehicle, a movable striker also mounted to the motor vehicle to receive the closure panel's latch, and a rotary power cable connecting therebetween. The actuator has a closure cable on a spooling drum extending to the closure panel for closing from an open position when the actuator operates. The movable striker moves between a nominal inboard position and an outboard position. A rotary power cable connects between a provided output on the actuator and an input on the striker so that the striker's movement is powered and synchronized by the actuator. With the closure panel open, the actuator begins a closing cycle by driving in a direction to spool in the closure cable extending to the closure panel. The actuator's direction, using the rotary power cable, simultaneously causes the striker to move outboard. When the closure panel is pulled completely closed, the striker has also moved to its outboard position whereupon the closure panel's latch readily receives and engages the striker. Upon engagement the actuator reverses its drive direction. This reverse direction causes both the actuator to reset with respect to its closure cable spooling drum and the rotary power cable to turn in the other direction causing the striker to return to its inboard position and fully close the closure panel against its seal load.
Abstract:
A drive assembly moves a vehicle closure panel from an open to a closed condition. The drive assembly has a housing and a motor mounted on the housing. A drum and gear assembly is rotatably mounted on the housing. The drum and gear assembly has a drum having a helical groove, a gear in driving engagement with the motor, and a spring biasing the drum in a winding direction relative to the gear. The drum and gear have a lost motion connection therebetween. A cable has an end connected to the closure panel and an opposite end connected to the drum about the helical groove in the winding direction. The drum rotates in the winding direction relative to the stationary gear as the closure panel is manually moved from the open to the closed condition with the spring maintaining a cable tension. The drum and gear rotate together in the winding direction upon energizing the motor effecting powered movement of the closure panel to the closed condition. The motor is afterwards energized in an opposite direction counter-rotating the gear relative to the drum back to a start position.
Abstract:
A driving device for an object moved back and forth by a driver (13) or an actuating shaft has a driving motor unit (10) and a driven member (1) that may be rotated by the driving motor unit and that frictionally engages a toothless transmission element. In order to obtain a practically slip-free, cheap to produce and silent transmission, at least one additional friction roller (2) associated with the driven member (1) is form-fittingly linked to the driven member (1) so as to act as a transmission member. The friction surfaces of the friction roller and the driven member have synchronous speeds of rotation and the traction force-transmitting element (8) is guided over part of the circumference of the friction surfaces of the at least two roller-shaped members (1, 2).
Abstract:
A line tensioning device (4) comprising a body (44), a line guide member (42) rotatably mounted to the body (44) and having means to seat and guide a line as it changes direction. The line tensioning device also comprises a spring (46) disposed to bias the line guide member (42) in one rotational direction whereby to tension the line and ratchet means (48, 50) coupling the line guide member (42) and the body (44). The ratchet means (48, 50) includes an engagement member (48) responsive to a very slow change in the operating rotational position of said line guide member (42) in one rotational direction, over multiple cyclic movements of the line, to move from one ratchet position to a next ratchet position.
Abstract:
A drive assembly for a sliding door is disclosed, the drive assembly having a power drive unit for providing a rotational force to rotate a cable drum of the drive assembly, the power drive unit being mounted within the sliding door; a cable having one end secured a guide track of the drive assembly and another end secured to the guide track; a roller assembly configured to slidably engage the guide track; an arm fixedly secured to the sliding door and pivotally mounted to the roller assembly at a pivot point; a pulley rotationally mounted to the roller assembly, the axis of rotation of the pulley being aligned with the pivot point and the cable engages the pulley in opposite directions as the cable drum rotates and the roller assembly slides along the guide track as the cable drum rotates, wherein movement of the roller assembly causes movement of the sliding door.
Abstract:
Apparatus (10) for use with barrier movement systems (16) in which a flexible member (26, 26') is used to move or support the barrier. The apparatus measures tension in the flexible member and generates a signal when the tension eases beyond a predetermined point. Additionally, the apparatus includes a stop member (83) which moves in response to easing tension to a position to stop further barrier movement.
Abstract:
An operator for opening and closing movable barriers such as garage doors comprising a pass-point limit system which is a component of an operating head. An operator for a rolling shutter or gate can be installed on either side of the opening. A dual pass-point system provides a unique pass-point regardless of direction of mounting the operator, regardless of the direction of travel for opening the barrier, and regardless of installation configuration, eliminating the need for the installer to know which direction the motor is rotating or the barrier is travelling. The operator automatically learns both the open and close limits, regardless of direction of travel and without having to press a learn switch to set the open and close limits.
Abstract:
A door has a door leaf (10) which may be moved overhead between an open and closed position and which is connected by means of a traction cable system to a weight-balancing device, driving motor or another similar power source. The traction cable system has at least one cable unit (21) secured at one end to the door leaf and fixed at the other end. In order to dispense with catching means and ensure a longer service life, at least one of the cable units (21) has two cables (21', 21'') loaded approximately in parallel and combined by their associated ends each to a building element. At least one of said building elements is designed as a cable tension compensating device.