Furniture element forming convertible desk and bed

Abstract

Furniture element forming convertible desk and bed This furniture element comprises a frame to which is linked a desk by link means in the form of a deformable parallelogram and arranged to keep the desk horizontal during its movement between its positions of use and non-use, a bed that moves rotation-wise about a horizontal pin between a vertical position of non-use and a horizontal position of use, and transmission means arranged to move the bed from its position of use to its position of non-use while the desk is being moved from its position of non-use to its position of use, and vice versa. The swivel pin of the bed moves vertically translation-wise relative to the frame of the furniture element between a bottom position close to the floor when the bed is in the position of non-use and a top position away from the floor when the bed is in the position of use.

1 . A furniture element forming a desk and a bed, convertible between a first position for using the desk and not using the bed and a second position for using the bed and not using the desk, the furniture element comprising 
 a frame to which the desk is linked by link means in the form of a deformable parallelogram positioned at at least one end of the desk and arranged to keep the desk horizontal during its movement between the first and second positions, the bed moving rotation-wise about a horizontal pin between a vertical position of non-use and a horizontal position of use,    transmission means arranged to move the bed from its position of use to its position of non-use while the desk is being moved from its position of non-use to its position of use, and vice versa,    wherein the rotation pin of the bed moves vertically translation-wise relative to the frame of the furniture element between a bottom position close to a floor when the bed is in the position of non-use and a top position away from the floor when the bed is in the position of use.    
   
   
       2 . The furniture element as claimed in  claim 1 , wherein the transmission means comprise a tab, one end of which is joined to a moving element of the deformable parallelogram, and the other end of which is mounted to pivot about a horizontal pin joined to the bed.  
   
   
       3 . The furniture element as claimed in  claim 2 , wherein the link means in the form of a deformable parallelogram comprise first and second parallel rods, the ends of which are respectively mounted to pivot on the one hand about horizontal pins joined to the desk and on the other hand about horizontal pins joined to the frame of the furniture element, and wherein one end of the tab is joined to one of the first and second rods.  
   
   
       4 . The furniture element as claimed in  claim 3 , wherein the pins of the first and second rods joined to the desk and joined to the frame of the furniture element are positioned in two parallel planes.  
   
   
       5 . The furniture element as claimed in  claim 4 , wherein the two planes containing the pins of the first and second rods are vertical.  
   
   
       6 . The furniture element as claimed  claim 3 , which comprises a third rod, parallel and offset relative to the first and second rods, one end of which is mounted to pivot about a horizontal pin joined to the desk and the other end of which is mounted to pivot about a horizontal pin joined to the frame of the furniture element.  
   
   
       7 . The furniture element as claimed in claims  1 , wherein the rotation pin of the bed that moves vertically translation-wise comprises a roller guided translation-wise in a vertical guideway joined to the frame of the furniture element.  
   
   
       8 . The furniture element as claimed  claim 1 , which comprises a system for automatically locking the furniture element in the first and second positions.  
   
   
       9 . The furniture element as claimed in  claim 8 , wherein the locking system comprises a locking element mounted to pivot about a pin joined to the bed between a locking position and an unlocking position, the locking element comprising a first notch intended to cooperate with a projecting portion joined to the desk in order to lock the desk when the desk is in its position of use and the locking element in its locking position, and a second notch intended to cooperate with a projecting portion joined to the frame of the furniture element in order to lock the bed when the bed is in its position of use and the locking element in its locking position.  
   
   
       10 . The furniture element as claimed in  claim 9 , wherein the locking system comprises a return means intended to define two stable balance positions of the locking element, these two positions corresponding to the locking and unlocking positions of the locking element.  
   
   
       11 . The furniture element as claimed in claims  9 , wherein the furniture element comprises an end stop intended to cooperate with the locking element while the bed is being moved in order to automatically switch the locking element from its unlocking position to its locking position.  
   
   
       12 . The furniture element as claimed in  claim 8 , wherein the locking system comprises a handle for manually unlocking the locking element.  
   
   
       13 . The furniture element as claimed in  claim 2 , which comprises a pneumatic jack, one end of which is mounted to pivot about a horizontal pin joined to the tab and the other end of which is mounted to pivot about a horizontal pin joined to the frame of the furniture element.  
   
   
       14 . The furniture element as claimed in  claim 1 , which comprises motorization means arranged to allow for a motorized movement of the bed or of the desk between its positions of use or non-use.