Frame element of an adjustable bed, bed frame with frame element and assembly method

Abstract

A frame element is arranged as a longitudinal element for a longitudinal side of an adjustable bed and has an adjustable legrest sector and at least one further sector. The frame element comprises a frame support with a sliding surface and an adjustment mechanism for adjusting the legrest sector. The frame element further comprises an adjustable legrest of the legrest sector, the legrest comprising a upper leg part hingedly connected to the frame support or to a middle part of the at least one further sector, and a lower leg part hingedly connected to the upper leg part. A support element of the lower leg part is designed to come into contact with the sliding surface. The adjustment mechanism is arranged to influence an angle between the upper leg part and a main orientation of the frame support, wherein the angle of the upper leg part and an inclination of the lower leg part with respect to the main orientation of the frame support depend on each other.

We claim: 
     
         1 . A frame element for an adjustable bed, the frame element being arranged as a longitudinal element for a longitudinal side of the bed and having an adjustable legrest sector and at least one further sector, the frame element comprising
 a frame support with a sliding surface;   an adjustment mechanism for adjusting the legrest sector; and   an adjustable legrest of the legrest sector, the legrest comprising a upper leg part hingedly connected to the frame support or to a middle part of the at least one further sector, and a lower leg part hingedly connected to the upper leg part; wherein   a support element of the lower leg part is adapted to come into contact with the sliding surface;   the adjustment mechanism is adapted to influence an angle between the upper leg part and a main orientation of the frame support; and   the angle of the upper leg part and an inclination of the lower leg part with respect to the main orientation of the frame support depend on each other.   
     
     
         2 . The frame element according to  claim 1 , wherein the frame support further comprises a bulge in the region of the sliding surface. 
     
     
         3 . The frame element according to  claim 2 , wherein the bulge is a trapezoidal or triangular bulge made of a plastic. 
     
     
         4 . The frame element according to  claim 1 , wherein a pitch angle of the sliding surface with respect to the main orientation of the frame support deviates at least in sections from 0° and is arranged such that
 a flexion angle between the upper leg part and the lower leg part is ergonomically correct; and 
 the inclination of the lower leg part is less than or equal to 15°. 
 
     
     
         5 . The frame element according to  claim 1 , wherein the sliding surface is formed by a sliding coating. 
     
     
         6 . The frame element according to  claim 1 , wherein the support element
 is attached angled to the lower leg part; and   has a straight, curved or angled shape.   
     
     
         7 . The frame element according to  claim 6 , wherein the support element is attached angled between 80° and 100°. 
     
     
         8 . The frame element according to  claim 6 , wherein the support element is welded, glued or screwed to the lower leg part. 
     
     
         9 . The frame element according to  claim 1 , wherein the support element comprises a plain bearing or a roller bearing adapted to come into contact with the sliding surface. 
     
     
         10 . The frame element according to  claim 1 , wherein the support element comprises one or more lateral guides. 
     
     
         11 . The frame element according to  claim 1 , wherein the upper leg part is adapted to come into contact with a contact surface of the adjustment mechanism. 
     
     
         12 . The frame element according to  claim 1 , wherein the adjustment mechanism of the legrest sector comprises a rotatable mounted disc with a spindle nut and a spindle of a drive element, wherein the spindle engages the spindle nut and extends perpendicularly to an axis of rotation of the disc. 
     
     
         13 . The frame element according to  claim 12 , wherein the drive element is an electric coaxial drive. 
     
     
         14 . The frame element according to  claim 1 , wherein a maximum angle of the upper leg part is
 for a lying position between 30° and 50°; and   for a storage position above 50°.   
     
     
         15 . The frame element according to  claim 1 , wherein a maximum angle of the upper leg part is
 for a lying position between 40° and 50°; and   for a storage position between 70° and 100°.   
     
     
         16 . The frame element according to one of  claim 1 , wherein the lower leg part is attached to the upper leg part in such a way that the lower leg part can be folded towards the upper leg part. 
     
     
         17 . The frame element according to  claim 16 , wherein the lower leg part can be folded towards the upper leg part by hand. 
     
     
         18 . The frame element according to  claim 1 , wherein the adjustable legrest sector comprises an anti-crushing mechanism that is adapted to prevent adjustment of the angle of the upper leg part and/or the inclination of the lower leg part when the lower leg part and/or the upper leg part come into contact with an obstacle. 
     
     
         19 . The frame element according to  claim 1 , in which the sliding surface is part of a rail of a baffle guide. 
     
     
         20 . A bed frame of an electrically adjustable bed having an adjustable legrest sector and at least one further sector, the bed frame comprising
 at least one crossbar;   two frame elements according to  claim 1 ; and   a control system which is adapted to synchronously control the adjustment mechanism of the two frame elements.   
     
     
         21 . The bed frame according to  claim 20 , wherein the control system comprises a memory containing a plurality of lying positions and/or storage space positions to be adjusted. 
     
     
         22 . The bed frame according to  claim 20 , wherein the control system is integrated in one of the two frame elements. 
     
     
         23 . The bed frame according to  claim 22 , wherein the control system is integrated in the frame support of one of the two frame elements. 
     
     
         24 . A method of assembling a bed frame comprising
 arranging bed frame elements in a perpendicular manner with respect to each other, wherein the bed frame elements comprise at least one crossbar and two frame elements according to  claim 1 , wherein the bed frame elements are arranged vertically overlapping;   establishing a non-load-bearing connection of the bed frame elements using mounting aids;   lifting of the bed frame elements, which are connected in a non-load-bearing manner, at connection points of the bed frame elements;   positioning a bed foot below each of the connection points; and   establishing a load-bearing connection at each of the connection points, wherein at each of the connection points a mounting aid and the at least one crossbar are clamped between the bed foot and one of the two frame elements.