Driving assembly, folding bed and folding bed frame using the driving assembly

Abstract

Disclosed are a driving assembly, a folding bed and a folding bed frame using the driving assembly. The driving assembly includes a first driving cylinder and a first force transmission assembly, one end of the first driving cylinder is fixedly mounted with a first connecting seat, the other end is rotatably connected to a second connecting seat; the first force transmission assembly includes a third connecting seat fixedly connected to the first base, a first force transmission rod rotatably connected to the third connecting seat, and a second force transmission rod rotatably connected to the first force transmission rod, the first force transmission rod is fixedly connected to the second connecting seat, and the second force transmission rod is configured to be rotatably connected to the back support.

What is claimed is: 
     
         1 . A driving assembly for a folding bed, comprising a first driving cylinder and a first force transmission assembly, wherein:
 one end of the first driving cylinder is fixedly mounted with a first connecting seat, the other end is rotatably connected to a second connecting seat, and the first connecting seat is used for rotatably connecting the first driving cylinder to a first base;   the first force transmission assembly is configured to transmit a driving force of the first driving cylinder to a back support and comprises a third connecting seat fixedly connected to the first base, a first force transmission rod rotatably connected to the third connecting seat, and a second force transmission rod rotatably connected to the first force transmission rod, the first force transmission rod is fixedly connected to the second connecting seat, and the second force transmission rod is configured to be rotatably connected to the back support.   
     
     
         2 . The driving assembly for a folding bed according to  claim 1 , wherein two first force transmission assemblies are positioned at each side of the first driving cylinder. 
     
     
         3 . A folding bed, comprising a first folding unit and a second folding unit rotatably connected to each other; wherein:
 the first folding unit comprises a first base, a first hip support fixedly mounted on the first base, a back support rotatably connected to the first hip support for supporting the back of a human body, and a driving assembly configured to drive the back support to rotate relative to the first hip support, the first hip support is positioned at one end of the first folding unit close to the second folding unit, and the driving assembly is as claimed in  claim 1 ;   the second folding unit comprises a second base rotatably connected to one end of the first base, a second hip support fixedly mounted on the second base, and a leg support assembly mounted at one end of the second hip support for supporting a human leg, the first hip support and the second hip support form a hip support assembly for supporting a human hip;   when the folding bed is in a folded state, the back support and the first hip support form a plane A, the leg support assembly and the second hip support form a plane B, the plane A is parallel to the plane B and spaced from the plane B, and the first base, the driving assembly and the second base are all positioned between the plane A and the plane B.   
     
     
         4 . The folding bed according to  claim 3 , wherein the leg support assembly is rotatably connected to the second hip support, and the second folding unit further comprises a force application assembly for driving the leg support assembly to rotate relative to the second hip support, and the second hip support is positioned at an end of the second base close to the first base;
 when the folding bed is in a fully unfolded state, the plane A coincides with the plane B, and the driving assembly and the force application assembly are arranged in a staggered manner.   
     
     
         5 . The folding bed according to  claim 4 , wherein the leg support assembly comprises:
 a first leg support rotatably connected to the second hip support, the first leg support being positioned at one end of the second hip support away from the first hip support;   a second leg support rotatably connected to one end of the first leg support away from the second hip support;   a connecting rod rotatably connected to the second leg support, two ends of the connecting rod being rotatably connected to the second leg support and the second base respectively;   the force application assembly comprises a second driving cylinder and a second force transmission assembly for transmitting a driving force of the second driving cylinder to the first leg support.   
     
     
         6 . The folding bed according to  claim 5 , wherein one end of the second driving cylinder is rotatably connected to the second base, the second force transmission assembly comprises a fourth connecting seat rotatably connected to an output end of the second driving cylinder, a third force transmission rod rotatably connected to the fourth connecting seat, a fourth force transmission rod rotatably connected to the third force transmission rod, and a fifth connecting seat rotatably connected to the third force transmission rod, one end of the fourth force transmission rod away from the third force transmission rod is rotatably connected to the first leg support; the fifth connecting seat is fixedly mounted on the second base, and a connection part between the fifth connecting seat and the third force transmission rod, a connection part between the fourth force transmission rod and the third force transmission rod, and a connection part between the fourth force transmission rod and the first leg support form a triangle. 
     
     
         7 . The folding bed according to  claim 6 , wherein the fourth connecting seat comprises a mounting seat rotatably connected to the second driving cylinder and a force transmission shaft fixedly connected to the third force transmission rod, and one end of the mounting seat away from the second driving cylinder is fixedly connected to an outer wall of the force transmission shaft. 
     
     
         8 . The folding bed according to  claim 7 , wherein two second force transmission assemblies are symmetrically arranged along a central shaft of the second driving cylinder, and force transmission shafts corresponding to the two second force transmission assemblies are coaxially arranged and fixedly connected. 
     
     
         9 . The folding bed according to  claim 3 , wherein a bottom surface of the first base and a bottom surface of the second base are each provided with a mounting member for mounting a bed leg, and a threaded hole is formed in the mounting member. 
     
     
         10 . The folding bed according to  claim 5 , wherein a foot pedal for limiting a mattress to move towards the foot are arranged on an upper end face of the second leg support. 
     
     
         11 . A folding bed frame, comprising a first folding unit and a second folding unit rotatably connected to each other, and bed legs detachably connected to the first folding unit and the second folding unit; wherein the first folding unit is as claimed in  claim 3  and a second folding unit is as claimed in  claim 3 ; the first folding unit and the second folding unit are equal in length and width, and a rotary folding mechanism for folding the bed frame is provided between the first folding unit and the second folding unit, and when the bed frame is in a folded state, the first folding unit is parallel to the second folding unit and a receiving gap is formed between the first folding unit and the second folding unit, and the driving assembly is positioned in the receiving gap;
 when the first folding unit and the second folding unit are rotated, facing surfaces are those facing toward each other during rotation, counter surfaces are those facing away from each other during operation, a first packaging frame is rotatably connected to a periphery of the facing surface of the first folding unit, and a second packaging frame is fixedly connected to a periphery of the facing surface of the second folding unit, and the first folding unit is further provided with a limiting mechanism for placing the first packaging frame in a first limiting position or in a second limiting position; 
 when the bed frame is in a fully unfolded state, the first packaging frame is in the first limiting position, and, the first packaging frame and the second packaging frame are arranged symmetrically; 
 when the bed frame is in a folded state, the first packaging frame is in the second limiting position, and, the first packaging frame abuts on the sidewall of the second packaging frame. 
 
     
     
         12 . The folding bed frame according to  claim 11 , wherein the first packaging frame comprises a transverse bar extending along a wide edge of the bed frame and two vertical bars extending along a long edge of the bed frame, the rotating connection part of the transverse bar and the first folding unit is located on one side of the transverse bar away from the wide edge of the bed frame, and the rotating connection part of the vertical bar and the first folding unit is located on one side of the vertical bar away from the long edge of the bed frame. 
     
     
         13 . The folding bed frame according to  claim 11 , wherein the vertical bar comprises a vertical section and a folding section rotatably connected to one end of the vertical section, the folding section is rotatably connected to one end of the vertical section, and the rotating connection part is positioned at a side away from the long edge of the bed frame. 
     
     
         14 . The folding bed frame according to  claim 13 , wherein a locking part for locking a relative position of the vertical section and the folding section is arranged between the vertical section and the folding section, and at one end of the vertical section away from the rotating connection part and one end of the folding section away from the rotating connection part. 
     
     
         15 . The folding bed frame according to  claim 14 , wherein the locking part comprises a hook portion of a first hook and loop fastener arranged on a side of the vertical section away from the long edge of the bed frame, and a loop portion of a first hook and loop fastener arranged on the folding section and engaged with the hook portion of a first hook and loop fastener. 
     
     
         16 . The folding bed frame according to  claim 11 , wherein the limiting mechanism comprises a hook portion of a second hook and loop fastener arranged in the first folding unit, a loop portion of a second hook and loop fastener arranged in the first packaging frame, the hook portion of a second hook and loop fastener is arranged on each side of the rotating connection part of the first packaging frame, and the loop portion of a second hook and loop fastener is arranged on each side of the rotating connection part of the first packaging frame. 
     
     
         17 . The folding bed frame according to  claim 16 , wherein when the bed frame is in the folded state, the second packaging frame is in interference fit with the receiving gap. 
     
     
         18 . The folding bed frame according to  claim 11 , wherein the bed frame is further provided with a functional interface, and the first packaging frame and the second packaging frame are each provided with an escape groove for wiring of the functional interface.