Telescopic support device for furniture

Abstract

The invention relates to a telescopic support device for furniture, the device comprising; at least three profile parts including a central profile part, a first profile part adjacent to the central profile part and a second profile part adjacent to the central profile part and opposite the first profile part, wherein said at least three profile parts are telescopically moveable with respect to each other, a motor unit mounted with the central profile part such that the motor unit moves in unity with the central profile part, wherein the motor unit is in driving engagement with the first profile part.

1 . Telescopic support device comprising;
 at least three profile parts including a central profile part, a first profile part adjacent to the central profile part and a second profile part adjacent to the central profile part and opposite the first profile part, wherein said at least three profile parts are telescopically moveable with respect to each other,   a motor unit mounted with the central profile part such that the motor unit moves in unity with the central profile part, wherein the motor unit is in driving engagement with the first profile part,   a coupling system for coupling the first and second profile part such that the second profile part is driven with respect to the central profile part when the motor unit drives the central profile part with respect to the first profile part.   
     
     
         2 . Telescopic support device according to  claim 1 , wherein the coupling system comprises a flexible driving member with which the relative displacement of the first and second profile parts can be realized. 
     
     
         3 . Telescopic support device according to  claim 2 , wherein the coupling system comprises a return pulley coupled with the central profile part, wherein the flexible driving member extends around the return pulley, and wherein one section of the flexible driving member is coupled with the first profile part and another section of the flexible driving member beyond the return pulley is coupled with the second profile part. 
     
     
         4 . Telescopic support device according to  claim 3 , wherein the coupling system comprises a further return pulley coupled with the central profile part and arranged opposite the said return pulley, wherein the flexible driving member extends around and is tensioned between both the return pulley and the further return pulley. 
     
     
         5 . Telescopic support device according to  claim 4 , wherein the flexible driving member is endless. 
     
     
         6 . Telescopic support device according to  claim 2 , wherein the flexible driving member comprises one or more from a cable, snare, chain, belt, and steel wire. 
     
     
         7 . Telescopic support device according to  claim 1 , the first profile part is provided with a gear rack, and the motor unit is in driving engagement with the first profile part through the gear rack. 
     
     
         8 . Telescopic support device according to  claim 7 , wherein the gear rack comprises a spur toothing. 
     
     
         9 . Telescopic support device according to  claim 1 , wherein the motor unit comprises a worm gear. 
     
     
         10 . Telescopic support device according to  claim 7 , wherein the gear rack is freestanding. 
     
     
         11 . Telescopic support device according to  claim 10 , wherein the gear rack extends towards the central profile part, and a freestanding end of the gear rack is constrained by the central profile part. 
     
     
         12 . Telescopic support device according to  claim 7 , wherein the coupling system extends in a longitudinal direction of the telescopic support device and between the gear rack and the motor unit. 
     
     
         13 . Telescopic support device according to  claim 1 , wherein the at least three profile parts have a cylindrical configuration in order to form a housing. 
     
     
         14 . Telescopic support device according to  claim 13 , wherein the at least three profile parts have a square cross section. 
     
     
         15 . Telescopic support device according to  claim 1 , further comprising an electrical connection system for connecting the motor unit to a power supply. 
     
     
         16 . Telescopic support device according to  claim 15 , wherein the electrical connection system extends through the first and/or second profile part towards the central profile part. 
     
     
         17 . Telescopic support device according to  claim 15 , wherein the electrical connection system extends in the longitudinal direction of the telescopic support device and opposite the gear rack. 
     
     
         18 . Telescopic support device according to  claim 15 , wherein the electrical connection system comprises a curl cable. 
     
     
         19 . Driving system for furniture, comprising a number of telescopic support devices according to  claim 1 , and a control unit coupled with all of the number of telescopic support devices to drive the motor units in an even manner. 
     
     
         20 . (canceled) 
     
     
         21 . Method for assembling a telescopic support device according to a preceding claim, the method comprising;
 assembling the motor unit, coupling system and gear rack to form a drive unit and then,   mount the drive unit as a whole within an interior of the least three telescopically profile parts.