Arrangement for height adjustment preferably for kitchen tables with base cabinets

Abstract

An arrangement for height-adjustment, preferably for kitchen tables with base cabinets is designed as a platform comprising a bottom plate ( 10 ), on which is mounted a lifting arrangement ( 13 - 18 ) with a carrying surface ( 11 ) for an object positioned thereon.

1 . An arrangement for height-adjustment  for base cabinets located on a floor and where an upper side of the cabinets includes a table top, wherein the arrangement is designed as a platform comprising a bottom plate on which is mounted a lifting arrangement with a carrying surface for an object positioned thereon. 
     
     
         2 . The arrangement according to  claim 1 , wherein a spindle unit ( 2 - 4 ,  7 ,  8 ;  13 - 15 ;  73 - 75 ;  200 ,  202 ,  203 ) comprises at least one spindle ( 2 ;  13 ,  14 ;  73 ,  74 ,- 200 ,  202 ) and a spindle nut ( 8 ;  15 ;  75 ;  203 ) is mounted at each corner of the bottom plate ( 10 ) and where an upper end of the spindle unit ( 2 - 4 ,  7 ,  8 ;  13 - 15 ;  73 - 75 ;  200 ,  202 ,  203 ) constitutes the carrying surface and where the spindle units are driven by at least one electric motor ( 5 ;  80 ;  302 ). 
     
     
         3 . The arrangement according to  claim 1 , including a spindle ( 2 ) on a pressure bearing ( 4 ) mounted at each corner of the bottom plate and where the lower end of the spindle is equipped with a toothed disc or chain wheel ( 4 ), a motor ( 5 ) which through an endless toothed belt or chain ( 6 ) drives the spindles ( 2 ) synchronously and where a tube piece ( 7 ) extending over the spindles ( 2 ), is equipped with a spindle nut ( 8 ) at the lower end, and where the upper side of the tube pieces ( 7 ) constitutes the supporting surface. 
     
     
         4 . The arrangement according to  claim 1 , wherein a hollow spindle ( 13 ) with external thread is secured in each corner of the bottom plate, a solid spindle ( 14 ) with external thread is secured to a top plate ( 11 ), constituting the supporting surface, a tubular spindle nut ( 15 ) is secured between the hollow spindle ( 13 ) and the solid spindle ( 14 ), said spindle nut having a hole with internal thread for the solid spindle ( 14 ) at the top and a hole with internal thread for the hollow spindle ( 13 ) at the bottom, the spindle nuts ( 15 ) are mounted in each corner of an intermediate frame ( 16 ), and a motor unit, which through an endless chain or toothed belt ( 17 ) running over a chain wheel or toothed pulley ( 18 ) drives each spindle nut ( 15 ). 
     
     
         5 . The arrangement according to  claim 1 , including two wedge elements ( 80 , 81 ) located next to each other, an axially displaceable wedge element ( 82 ) is located between these two wedge elements, said displaceable wedge element rests on one on the wedge elements ( 80 ) with a surface, while the other wedge element ( 81 ) rests on a surface of the displaceable wedge element ( 82 ) facing upwards, and where the axially displaceable wedge element ( 82 ) may be moved with a chain or belt drive, alternatively a spindle nut unit. 
     
     
         6 . The arrangement according to  claim 1 , includes a box-shaped profile ( 51 ) which is open at the top and a box-shaped profile ( 50 ) which is open at the bottom and that there between these two box-shaped profiles ( 50 , 51 ) is a chassis element ( 52 ), in which two chain wheels ( 53 , 54 ) are embedded, over which an endless chain ( 55 ) runs, that a triangular plate element ( 56 , 57 ) is secured to each chain distance between the two chain wheels ( 53 , 54 ), where an axle pin ( 58 - 61 ) is secured at each corner facing away from the chain wheels ( 53 , 54 ), said axle pin fitting into two inclined tracks ( 62 ,  63 ;  64 ,  65 ) in the two box-shaped profiles ( 51 ; 50 ), and where the chain ( 55 ) is driven by a reversible electric motor ( 66 ) such that when the two triangular plate elements ( 56 , 57 ) are displaced away from each other, the upper box-shaped profile ( 50 ) will be raised and when the two triangular plate elements ( 56 , 57 ) are pulled towards each other the upper box-shaped profile ( 50 ) is lowered. 
     
     
         7 . The arrangement according to  claim 1 , includes two box-shaped profiles ( 70 , 71 ) and that a third box-shaped profile ( 72 ) is located in between such that these three box-shaped profiles ( 70 - 72 ) in a telescopic manner may be displaced in and out of each other with a solid spindle ( 73 ) in mesh with a hollow spindle ( 74 ), which again is in mesh with a tubular spindle nut ( 75 ), which on the exterior has a bevel wheel ( 76 ), that such a spindle unit is located at each end of the box-shaped profiles ( 70 - 72 ) and is connected to a drive shaft ( 77 ) driven by a motor, and that each end of the drive shaft ( 77 ) is equipped with a bevel wheel ( 78 ) in mesh with the bevel wheel ( 76 ) of the spindle unit on the spindle nuts ( 75 ). 
     
     
         8 . The arrangement according to  claim 1 , wherein two parallel shafts ( 23 , 24 ) are mounted on the bottom plate ( 2 ) at a mutual distance, and that an arm ( 25 - 28 ) is located at each end of these shafts, that the upper end of the arms ( 25 - 28 ) in pairs are connected to a rod ( 29 , 30 ), corresponding to the length between the two shafts ( 23 , 24 ) such that a rod-shaped parallelogram emerges at each side, the upper side of which constituting the supporting surface and that a linear actuator ( 32 ) is secured with one end to the bottom plate ( 20 ) and with the other end ( 33 ) is secured to a rotary arm ( 31 ) on one of the shafts ( 23 ) for raising and lowering the rod-shaped parallelogram. 
     
     
         9 . The arrangement according to  claim 1 , wherein the lifting arrangement comprises a shaft ( 103 ) driven by a motor ( 108 ) mounted on the bottom plate ( 102 ), that a rope such as a wire, belt, plastic band, steel band ( 104 ; 109 ) is secured to each end of the shaft ( 103 ), said rope running over rolls ( 105 , 106 ) and up over the upper edge of the lower box-shaped element ( 100 ) and is secured to the underside of a subsequent box-shaped element ( 101 ). 
     
     
         10 . The arrangement according to  claim 1 , including two similar but mirrored arrangements comprising a lever ( 90 ), mounted about a horizontal shaft ( 91 ) in a rotatable manner, that a spindle ( 92 ), driven by a reversible electric motor ( 93 ), is secured at a distance along the lever ( 90 ), that the spindle ( 92 ) is in mesh with a spindle nut ( 94 ) mounted on the lever ( 90 ), that the spindle nut ( 94 ) is mounted on the lever in a rotatable and displaceable manner, alternatively that the spindle ( 92 ) is embedded in a tiltable manner. 
     
     
         11 . The arrangement according to  claim 1 , wherein the platform is longitudinal, i.e., the length is larger than the width, and where a lifting arrangement with a spindle unit, a lever, wedge arrangement or rope drive is located at each end. 
     
     
         12 . The arrangement according to  claim 1 , wherein the platform has a length of approximately 45 cm and a width of approximately 20 cm. 
     
     
         13 . The arrangement according to  claim 1 , including on at least the visible sides of the platform in its mounted position a telescopic cover. 
     
     
         14 . The arrangement according to  claim 13 , wherein one part of the telescopic cover is secured to the bottom plate while another part is secured at the carrying surface such that the cover is extended and retracted concurrently with the movements of the platform. 
     
     
         15 . A cabinet with a bottom plate prepared for mounting of or which is mounted with at least one arrangement according to  claim 1 .