Foldable bed assembly and method of folding the dame

Abstract

A foldable bed assembly includes a bed frame unit having support frames and wing support members retractably located at lateral side of the support frames correspondingly. A bed board unit put on the bed frame unit for putting on a mattress. The bed board unit includes main boards and wing boards are foldably located at lateral side of the main boards correspondingly. When the bed frame unit and the bed board unit are expanded, the wing support members respectively support the underside of the wing boards. A method for folding the foldable bed assembly includes folding the wing boards to the main boards, retracting the wing support members into the support frames, and folding the support frames completely.

What is claimed is: 
     
         1 . A foldable bed assembly comprising:
 a bed frame unit having multiple support frames; the multiple support frames being foldable with respect to each other along a longitudinal direction of the foldable bed assembly; multiple wing support members connected to the bed frame unit and located in a row along the longitudinal direction of the foldable bed assembly; wherein, the multiple wing support members being located at least one lateral side of the multiple support frames corresponding thereto, and the multiple wing support members retractably located along a transversal direction of the foldable bed assembly, and   a bed board unit put on the bed frame unit and including multiple main boards; the multiple main boards being foldable with respect to each other along a longitudinal direction of the foldable bed assembly; the bed board unit including multiple wing boards which are located in a row along the longitudinal direction of the foldable bed assembly; the multiple wing boards respectively located at least one lateral side of the multiple main boards corresponding thereto; wherein the wing boards being foldable with respect to the main boards correspondingly and along a transversal direction of the foldable bed assembly; wherein when the bed frame unit and the bed board unit are expanded, the multiple support frames support undersides of the multiple main boards correspondingly, and the multiple wing support members support undersides of the multiple wing boards correspondingly.   
     
     
         2 . The foldable bed assembly as claimed in  claim 1 , wherein multiple transverse tubes extend along the transversal direction of the foldable bed assembly and are connected to the multiple support frames correspondingly; the multiple wing support members are retractably inserted into the transverse tubes correspondingly and retractably extend along the transversal direction of the foldable bed assembly. 
     
     
         3 . The foldable bed assembly as claimed in  claim 2 , wherein each of the transverse tubes includes at least one engaging hole, each of the multiple wing support members includes a resilient member and an engaging protrusion connected to the resilient member; the resilient member is biased in each of the multiple wing support members corresponding thereto, the engaging protrusion of the resilient member protrudes beyond each of the multiple wing support members corresponding thereto by an elastic force of the resilient member and inserted into the at least one engaging hole of the transverse tube corresponding thereto. 
     
     
         4 . The foldable bed assembly as claimed in  claim 1 , wherein each of the multiple wing boards includes at least one hinge member pivotably connected to the at least one lateral side of each of the multiple main boards corresponding thereto, such that each of the multiple wing boards is pivotable about the at least one hinge member and toward each of the multiple main boards corresponding thereto, and such that each of the multiple wing boards is foldable with respect to each of the multiple main boards corresponding thereto and along the transversal direction of the foldable bed assembly. 
     
     
         5 . The foldable bed assembly as claimed in  claim 4 , wherein the at least one hinge member includes at least one strip which includes two half portions which are formed with each other and respectively adhered to and riveted to each of the multiple main boards and each of the multiple wing boards corresponding thereto, such that each of the multiple wing boards is pviotable about a separation line between the two half portions and toward each of the multiple main boards corresponding thereto. 
     
     
         6 . The foldable bed assembly as claimed in  claim 5 , wherein an indication line is formed between the two half portions and identically located along the separation line, and located in alignment with two respective facing sides between each of the multiple main boards and each of the multiple wing boards corresponding thereto. 
     
     
         7 . The foldable bed assembly as claimed in  claim 1 , wherein the multiple wing support members are located two opposed lateral sides of the multiple support frames corresponding thereto; two of the multiple wing boards are respectively and pivotably connected to two opposed lateral sides of each of the multiple main boards, and are foldable with respect to each of the multiple main boards along the transversal direction of the foldable bed assembly. 
     
     
         8 . The foldable bed assembly as claimed in  claim 7 , wherein the two wing support members on the two opposed lateral sides of each of the multiple support frames are located symmetrically to each other; the two wing boards on the two sides of each of the multiple main boards are located symmetrically to each other; widths in the transversal direction of the foldable bed assembly of the two wing boards on the two opposed lateral sides of each of the multiple main board are identical. 
     
     
         9 . The foldable bed assembly as claimed in  claim 7 , wherein a ratio between the width in the transversal direction of the foldable bed assembly of each of the two wing boards and a width in the transversal direction of the foldable bed assembly of each of the multiple main boards is between ⅙ to ½. 
     
     
         10 . The foldable bed assembly as claimed in  claim 1 , wherein the underside of each of the multiple wing boards is supported by at least two of the multiple wing support members. 
     
     
         11 . The foldable bed assembly as claimed in  claim 1 , wherein a top of each of the multiple support frames is pivotably connected at least one angle adjustment frame; the angle adjustment frame is mounted with one of the multiple main boards; a driving unit is pivotably connected between one of the multiple support frames and the angle adjustment frame correspondingly; the driving unit drives the angle adjustment frame to rotate with respect to the corresponding support frame along an axial line parallel to the transversal direction of the foldable bed assembly. 
     
     
         12 . The foldable bed assembly as claimed in  claim 11 , wherein multiple transverse tubes extend along the transversal direction of the foldable bed assembly and are connected to the at least one angle adjustment frame correspondingly; the multiple wing support members are retractably inserted into the transverse tubes correspondingly and retractably extend along the transversal direction of the foldable bed assembly. 
     
     
         13 . The foldable bed assembly as claimed in  claim 12 , wherein the underside of each of the multiple wing boards is supported by at least two of the multiple wing support members. 
     
     
         14 . The foldable bed assembly as claimed in  claim 1 , wherein when the foldable bed assembly is to be folded completely, the multiple wing boards are firstly folded toward tops of the multiple main boards correspondingly, the multiple wing support members are secondly retracted toward the multiple support frames correspondingly, and the multiple support frames together with the multiple main boards and the multiple wing boards are finally folded along the longitudinal direction of the foldable bed assembly, so that the multiple wing boards are located between the multiple main boards, and the multiple wing boards and the multiple main boards are located between the multiple support frames. 
     
     
         15 . The foldable bed assembly as claimed in  claim 1 , wherein each support frame is put on with two main boards, and two opposed lateral sides of each main board are respectively and foldably connected with one wing board; wherein when the foldable bed assembly is in a completely folded status, one top of each main board is overlapped with two wing boards, surrounding contour lines of the two wing boards projected on a first plane are inside surrounding contour lines of the corresponding main board projected on the first plane; surrounding contour lines of the two main boards put on the same one support frame projected on a second plane are formed in a rectangle and correspondingly overlapped on four sides of the rectangle, and a ratio between lengths of a long side and a short side of the rectangle is between 1˜1.1. 
     
     
         16 . The foldable bed assembly as claimed in  claim 1 , wherein the ratio between the lengths of the long side and the short side of the rectangle is between 1˜1.05. 
     
     
         17 . A folding method for a foldable bed assembly, the foldable bed assembly comprising a bed frame unit and a bed board unit; the bed frame unit having multiple support frames; the multiple support frames being foldable with respect to each other along a longitudinal direction of the foldable bed assembly; multiple wing support members connected to the bed frame unit and located in a row along the longitudinal direction of the foldable bed assembly; wherein, the multiple wing support members being located at least one lateral side of the multiple support frames corresponding thereto, and the multiple wing support members retractably located along a transversal direction of the foldable bed assembly; the bed board unit put on the bed frame unit and including multiple main boards; the multiple main boards being foldable with respect to each other along a longitudinal direction of the foldable bed assembly; the bed board unit including multiple wing boards which are located in a row along the longitudinal direction of the foldable bed assembly; the multiple wing boards respectively located at least one lateral side of the multiple main boards corresponding thereto; wherein the multiple wing boards being foldable with respect to the multiple main boards correspondingly and along a transversal direction of the foldable bed assembly; wherein when the bed frame unit and the bed board unit are expanded, the multiple support frames support undersides of the multiple main boards correspondingly, and the multiple wing support members support undersides of the multiple wing boards correspondingly;
 wherein, the method comprising the steps of:   firstly the multiple wing boards being folded toward tops of the multiple main boards correspondingly;   secondly the multiple wing support members being retracted toward the multiple support frames correspondingly, and   finally the support frames together with the main boards and the wing boards being folded along the longitudinal direction of the foldable bed assembly, so that the multiple wing boards are located between the multiple main boards, and the multiple wing boards and the multiple main boards are located between the multiple support frames.   
     
     
         18 . The method as claimed in  claim 17 , wherein, wherein, each support frame is put on with two main boards, the multiple wing support members are located two opposed lateral sides of the multiple support frames corresponding thereto, and two opposed lateral sides of each main board are respectively and foldably connected with one wing board; wherein when the foldable bed assembly is in a completely folded status, one top of each main board is overlapped with two wing boards correspondingly, surrounding contour lines of the two wing boards projected on a first plane are inside surrounding contour lines of the corresponding main board projected on the first plane; surrounding contour lines of every two main boards put on the same one support frame projected on a second plane are formed in a rectangle and correspondingly overlapped on four sides of the rectangle, and a ratio between lengths of a long side and a short side of the rectangle is between 1˜1.1. 
     
     
         19 . A folding method for a foldable bed assembly, the foldable bed assembly comprising a bed frame unit and a bed board unit; the bed frame unit having multiple support frames; the multiple support frames being foldable with respect to each other along a longitudinal direction of the foldable bed assembly; multiple wing support members connected to the bed frame unit and located in a row along the longitudinal direction of the foldable bed assembly; wherein, the multiple wing support members being located at least one lateral side of the multiple support frames corresponding thereto, and the multiple wing support members retractably located along a transversal direction of the foldable bed assembly; the bed board unit put on the bed frame unit and including multiple main boards; the multiple main boards being foldable with respect to each other along a longitudinal direction of the foldable bed assembly; the bed board unit including multiple wing boards which are located in a row along the longitudinal direction of the foldable bed assembly; the multiple wing boards respectively located at least one lateral side of the multiple main boards corresponding thereto; wherein the multiple wing boards being foldable with respect to the multiple main boards correspondingly and along a transversal direction of the foldable bed assembly; wherein when the bed frame unit and the bed board unit are expanded, the multiple support frames support undersides of the multiple main boards correspondingly, and the multiple wing support members support undersides of the multiple wing boards correspondingly;
 wherein, the method comprising the steps of:   firstly the multiple wing boards being folded toward tops of the multiple main boards correspondingly;   secondly the support frames together with the main boards and the wing boards being folded along the longitudinal direction of the foldable bed assembly, so that the multiple wing boards are located between the multiple main boards, and the multiple wing boards and the multiple main boards are located between the multiple support frames, and   finally the multiple wing support members being retracted toward the multiple support frames correspondingly.   
     
     
         20 . The method as claimed in  claim 19 , wherein, each support frame is put on with two main boards, the multiple wing support members are located two opposed lateral sides of the multiple support frames corresponding thereto, and two opposed lateral sides of each main board are respectively and foldably connected with one wing board; wherein when the foldable bed assembly is in a completely folded status, one top of each main board is overlapped with two wing boards correspondingly, surrounding contour lines of the two wing boards projected on a first plane are inside surrounding contour lines of the corresponding main board projected on the first plane; surrounding contour lines of every two main boards put on the same one support frame projected on a second plane are formed in a rectangle and correspondingly overlapped on four sides of the rectangle, and a ratio between lengths of a long side and a short side of the rectangle is between 1˜1.05.