Folding Bed

Abstract

Disclosed is a folding bed, comprising a connecting rod assembly, a folding bed frame, a thigh board, a shank board and a first driving device, thigh board is rotatably connected to shank board; connecting rod assembly comprises two first connecting rods, two second connecting rods and a first linking rod, one end of the first connecting rod is slidably connected to shank board, and another end is rotatably connected to the folding bed frame; one end of the second connecting rod is rotatably connected to the first connecting rod, another end of the second connecting rod is used for driving thigh board of the folding bed to rotate, and the two ends of first linking rod are fixedly connected to the two first connecting rods, respectively; the first driving device is used for pushing the first linking rod to drive shank board and thigh board to move.

1 . A folding bed, comprising a connecting rod assembly ( 1 ), a folding bed frame ( 2 ), a thigh board ( 22 ), a shank board ( 21 ) and a first driving device ( 3 ), wherein the thigh board ( 22 ) is rotatably connected to the shank board ( 21 );
 the connecting rod assembly ( 1 ) comprises two first connecting rods ( 11 ), two second connecting rods ( 12 ) and a first linking rod ( 13 ), wherein one end of the first connecting rod ( 11 ) is slidably connected to the shank board ( 21 ) of the folding bed, and another end of the first connecting rod ( 11 ) is rotatably connected to the folding bed frame ( 2 ); one end of the second connecting rod ( 12 ) is rotatably connected to the first connecting rod ( 11 ), the other end of the second connecting rod ( 12 ) is used for driving the thigh board ( 22 ) of the folding bed to rotate, and two ends of the first linking rod ( 13 ) are fixedly connected to the two first connecting rods ( 11 ), respectively;   the first driving device ( 3 ) comprises a first motor ( 31 ) and a first push rod ( 32 ), wherein the first motor ( 31 ) is used for driving the first push rod ( 32 ), and the first push rod ( 32 ) is used for pushing the first linking rod ( 13 ) so as to drive the shank board ( 21 ) and the thigh board ( 22 ) to move.   
     
     
         2 . The folding bed according to  claim 1 , characterized in that a point where the second connecting rod ( 12 ) is rotatably connected to the first connecting rod ( 11 ) is close to the shank board ( 21 ) side of the folding bed, and points where the first linking rod ( 13 ) is fixed to the two first connecting rods ( 11 ) are close to the folding bed frame ( 2 ) side. 
     
     
         3 . The folding bed according to  claim 1 , characterized by further comprising a first guide rail ( 14 ), wherein the first guide rail ( 14 ) is fixedly connected to a back face of the shank board ( 21 ), and is provided with a first guide slot ( 141 ) which is a linear slot. 
     
     
         4 . The folding bed according to  claim 3 , characterized by further comprising a first sliding piece ( 15 ), wherein the first sliding piece ( 15 ) is connected to one end of the first connecting rod ( 11 ) and can slide in an extension direction of the first guide slot ( 141 ). 
     
     
         5 . The folding bed according to  claim 1 , characterized in that an overall thickness of the connecting rod assembly ( 1 ) after the connecting rod assembly is folded is less than a frame thickness of the folding bed frame ( 2 ), and the frame thickness of the folding bed frame ( 2 ) is less than 85 mm. 
     
     
         6 . The folding bed according to  claim 1 , characterized in that the first driving device ( 3 ) further comprises a first connecting piece ( 33 ), wherein one end of the first connecting piece ( 33 ) is rotatably connected to the first push rod ( 32 ), and another end of the first connecting piece ( 33 ) is connected to the first linking rod ( 13 ). 
     
     
         7 . The folding bed according to  claim 1 , characterized in that an inner side frame of the folding bed frame ( 2 ) is rotatably connected to the first connecting rod ( 11 ) by means of an assembly ( 4 ), the assembly ( 4 ) comprises a hollow sleeve ( 41 ) and a screw ( 42 ), the hollow sleeve ( 41 ) is fixedly connected to the folding bed frame ( 2 ), the first connecting rod ( 11 ) hollowly sleeves the hollow sleeve ( 41 ), and the screw ( 42 ) is in matched connection to the hollow sleeve ( 41 ). 
     
     
         8 . The folding bed according to  claim 1 , characterized in that an end of the thigh board ( 22 ) close to the shank board ( 21 ) is provided with a linkage piece ( 5 ), one end of the linkage piece ( 5 ) is rotatably connected to the second connecting rod ( 12 ), and another end of the linkage piece ( 5 ) is fixedly connected to the thigh board ( 22 ). 
     
     
         9 . The folding bed according to  claim 1 , characterized by further comprising a seat board ( 23 ) and a back board ( 24 ), wherein the folding bed frame ( 2 ) comprises a back frame ( 25 ) and a leg frame ( 26 ) that are hinged to each other, the back board ( 24 ) is arranged on the back frame ( 25 ), and the seat board ( 23 ), the thigh board ( 22 ) and the shank board ( 21 ) are hinged in sequence and arranged on the leg frame ( 26 ); a hinge assembly ( 6 ) and a second driving device ( 7 ) are arranged between the back board ( 24 ) and the back frame ( 25 ), and the second driving device ( 7 ) drives the back board ( 24 ) to rotate relative to the back frame ( 25 ) via the hinge assembly ( 6 ). 
     
     
         10 . The folding bed according to  claim 9 , characterized in that the hinge assembly ( 6 ) comprises a second linking rod ( 62 ) and two back brackets ( 61 ), wherein one end of the back bracket ( 61 ) is slidably connected to the back board ( 24 ) of the folding bed, another end of the back bracket ( 61 ) is rotatably connected to the folding bed frame ( 2 ), two ends of the second linking rod ( 62 ) are fixedly connected to the two back brackets ( 61 ), respectively, and the second linking rod ( 62 ) is connected to the second driving device ( 7 ) and drives the back board ( 24 ) to rotate relative to the folding bed frame ( 2 ). 
     
     
         11 . The folding bed according to  claim 10 , characterized in that points where the second linking rod ( 62 ) is fixed to the two back brackets ( 61 ) are close to the folding bed frame ( 2 ) side. 
     
     
         12 . The folding bed according to  claim 10 , characterized in that the hinge assembly ( 6 ) further comprises a second guide rail ( 63 ), wherein the second guide rail ( 63 ) is fixedly connected to a back face of the back board ( 24 ), and is provided with a second guide slot ( 631 ) which is a linear slot. 
     
     
         13 . The folding bed according to  claim 12 , characterized in that the hinge assembly ( 6 ) further comprises a second sliding piece ( 64 ), wherein the second sliding piece ( 64 ) is connected to one end of the back bracket ( 61 ) and can slide in an extension direction of the second guide slot ( 631 ). 
     
     
         14 . The folding bed according to  claim 10 , characterized in that an overall thickness of the hinge assembly ( 6 ) after the hinge assembly is folded is less than a frame thickness of the folding bed frame ( 2 ), and the frame thickness of the folding bed frame ( 2 ) is less than 85 mm. 
     
     
         15 . The folding bed according to  claim 10 , characterized by further comprising a second driving device ( 7 ), wherein the second driving device ( 7 ) comprises a second motor ( 71 ) and a second push rod ( 72 ), the second motor ( 71 ) is fixed to the folding bed frame ( 2 ) and is used for driving the second push rod ( 72 ), the second push rod ( 72 ) is used for pushing the second linking rod ( 62 ) so as to drive the back board ( 24 ) to rotate relative to the folding bed frame ( 2 ). 
     
     
         16 . The folding bed according to  claim 15 , characterized in that a second connecting piece ( 73 ) is arranged between the second push rod ( 72 ) and the second linking rod ( 62 ), one end of the second connecting piece ( 73 ) is rotatably connected to the second push rod ( 72 ), and another end of the second connecting piece ( 73 ) is connected to the second linking rod ( 62 ). 
     
     
         17 . The folding bed according to  claim 15 , characterized in that an inner side frame of the folding bed frame ( 2 ) is rotatably connected to the back bracket ( 61 ) by means of an assembly ( 4 ), the assembly ( 4 ) comprises a hollow sleeve ( 41 ) and a screw ( 42 ), the hollow sleeve ( 41 ) is fixedly connected to the folding bed frame ( 2 ), the back bracket ( 61 ) hollowly sleeves the hollow sleeve ( 41 ), and the screw ( 42 ) is in matched connection to the hollow sleeve ( 41 ). 
     
     
         18 . The folding bed according to  claim 15 , characterized in that the back board ( 24 ) comprises a first back board ( 241 ) and a second back board ( 242 ) that are hinged to each other, wherein the first back board ( 241 ) is slidably connected to the back bracket ( 61 ), and the second back board ( 242 ) is fixed to an end of the back frame ( 25 ) close to the leg frame ( 26 ).