Device for actuating the pivoting movement of a vehicle flap

Abstract

The device for actuating a pivoting movement of a vehicle flap about a pivot axis includes a gas spring having a cylinder and a piston rod protruding from the cylinder. Either the cylinder or the piston rod is coupled to a fixed component of the vehicle body, and the other one of cylinder and piston rod is coupled to the flap at a distance from the pivot axis. A flexurally rigid guide extends parallel adjacent to the gas spring and is fixedly connected to the cylinder of the gas spring. One region of a flexible tension and compression element is guided in the guide and operatively connected to the flap, and a second region is guided in a flexible casing and operatively connected to a reversible drive, so that the flexible tension and compression element can be motor-driven.

1 . A device for actuating a pivoting movement of a flap of a vehicle about a pivot axis, the device comprising: 
 a gas spring having a cylinder extending in a longitudinal direction and a piston rod extending out of one side of the cylinder, one of the cylinder or the piston rod being coupled to a fixed component of a body of the vehicle, and the other one of the cylinder and the piston rod being coupled to the flap at a distance from the pivot axis;    a flexurally rigid guide extending in the longitudinal direction parallel adjacent to the gas spring and being fixedly connected to the cylinder of the gas spring;    a flexible tension and compression element having first and second regions, the first region being guided in the guide and being operatively connected to the flap and the second region being guided in a flexible casing; and    a reversible drive connected to the second region such that the flexible tension and compression element is drivable by the reversible drive in the longitudinal direction.    
   
   
       2 . The device of  claim 1 , wherein an extent of the guide in the longitudinal direction approximately corresponds to an extended length of the piston rod of the gas spring.  
   
   
       3 . The device of  claim 1 , further comprising a pushing and pulling rod connected to the first region of the tension and compression element and a connecting member connecting a free end of the tension and compression element to a free end of the piston rod protruding out of the cylinder.  
   
   
       4 . The device of  claim 3 , further comprising a supporting member fixedly connected to the cylinder and a helical compression spring radially enclosing the gas spring and the guide, the helical compression spring having a first end supported on the connecting member and a second end supported on the supporting member.  
   
   
       5 . A device for actuating a pivoting movement of a flap of a vehicle about a pivot axis, the device comprising: 
 a gas spring having a cylinder extending in a longitudinal direction and a piston rod extending out of one side of the cylinder, one of the cylinder or the piston rod being coupled to a fixed component of a body of the vehicle, and the other one of the cylinder and the piston rod being coupled to the flap at a distance from the pivot axis;    a flexurally rigid guide extending in the longitudinal direction parallel and adjacent to the gas spring and having one end portion fixedly connected to the one of the cylinder or the piston rod;    a flexible tension and compression element having first and second regions, the first region being guided in the guide, being connected to the other one of the cylinder and the piston rod and being operatively connected to the flap, and the second region being guided in a flexible casing; and    a reversible drive connected to the second region such that the flexible tension and compression element is drivable by the reversible drive in the longitudinal direction.    
   
   
       6 . The device of  claim 5 , wherein the guide has a longitudinally extending slot on a side facing the cylinder, and wherein the device further comprises a connecting element protruding radially through the slot and fixedly connecting the first region of the tension and compression element to the other one of the cylinder and the piston rod.  
   
   
       7 . The device of  claim 5 , wherein the guide comprises a continuous guide tube or a plurality of guide tube sections arranged coaxially at a distance one behind another.  
   
   
       8 . The device of  claim 7 , wherein the guide tube or the plurality of guide tube sections each comprise half tube parts connected to each other.  
   
   
       9 . A device for actuating a pivoting movement of a flap of a vehicle about a pivot axis, the device comprising: 
 a gas spring having a cylinder extending in a longitudinal direction, a piston, and a piston rod having a cross-sectional dimension and extending out of a first side of the cylinder, one of the cylinder and the piston rod being coupled to a fixed component of a body of the vehicle, and the other one of the cylinder and the piston rod being coupled to the flap at a distance from the pivot axis;    a flexurally rigid guide extending in the longitudinal direction from a second side of the cylinder of the gas spring opposite from said first side;    a flexible tension and compression element having a first region guided in the guide and a second region guided in a flexible casing;    a connecting rod having a cross-sectional dimension and extending in a sealed manner into the cylinder through the second side and being fixedly connected to the piston, wherein the cross-sectional dimension of the piston rod exceeds the cross-sectional dimension of the connecting rod, the first region being operatively connected to the flap through the connecting rod and the piston rod; and    a reversible drive connected to the second region such that the flexible tension and compression element is drivable by the reversible drive in the longitudinal direction.    
   
   
       10 . A device for actuating a pivoting movement of a flap of a vehicle about a pivot axis, the device comprising: 
 a gas spring having a cylinder extending in a longitudinal direction and a piston rod extending through one side of the cylinder, the cylinder being operatively coupled to the flap at a distance from the pivot axis, and the piston rod being coupled to a fixed component of a body of the vehicle;    a first flexurally rigid guide connected at a distance from the pivot axis of the flap to a fixed component of the body of the vehicle;    a second guide connected to a fixed component of the body of the vehicle and extending in the longitudinal direction parallel and adjacent to the gas spring;    a flexible tension and compression element having a first region, a second region, and a third region intermediate the first and second regions, the first region being guided in the first guide and connected to the flap, the second region being guided in the second guide and being connected to the cylinder, and the third region being guided in a flexible casing and connecting the first and second regions; and    a reversible drive operatively connected for acting on the second region such that the flexible tension and compression element is drivable by the reversible drive in the longitudinal direction.    
   
   
       11 . The device of  claim 10 , wherein the second guide has a longitudinally extending slot on a side facing the cylinder, and wherein the device further comprises a connecting element radially protruding through the slot and fixedly connecting the second region of the tension and compression element to the cylinder.  
   
   
       12 . The device of  claim 10 , wherein the second guide comprises a continuous guide tube or a plurality of guide tube sections arranged coaxially at a distance one behind another.  
   
   
       13 . The device of  claim 12 , wherein the guide tube or the plurality of guide tube sections are composed of half tube parts connected to each other.  
   
   
       14 . The device of  claim 10 , further comprising a spindle drive connected between the reversible motor and the cylinder for moving the cylinder of the gas spring in the longitudinal direction.  
   
   
       15 . The device of  claim 14 , wherein the spindle drive comprises a longitudinally extending threaded spindle having one end fastened to the cylinder of the gas spring by an axially fixed spindle nut, the spindle being rotatably drivable by the reversible motor.  
   
   
       16 . The device of  claim 1 , wherein the tension and compression element is a cable.  
   
   
       17 . The device of  claim 1 , wherein the reversible drive is a reversible electric motor.  
   
   
       18 . The device of  claim 17 , wherein the electric motor is a non-self-locking electric motor.  
   
   
       19 . The device of  claim 1 , further comprising a lock for locking the flap in a closed position.  
   
   
       20 . The device of  claim 19 , wherein the lock is an electromechanical lock.  
   
   
       21 . The device of  claim 1 , further comprising a plurality of tension and compression elements which each lead to a gas spring and can be driven by the drive.  
   
   
       22 . The device of  claim 1 , wherein the flap can be driven pivotably by a plurality of devices.  
   
   
       23 . The device of  claim 1 , further comprising an electromechanical coupling for driving the tension and compression element.  
   
   
       24 . The device of  claim 1 , further comprising a sensor for detecting a speed of movement of the flap and a device for comparing a measured value with a desired value, the drive being drivable in a stoppable or reversible manner if the measured value is lower than the desired value.