Foldable electric bed

Abstract

Disclosed is a foldable electric bed, which includes a head bed frame and a foot bed frame. The head bed frame has a male plate, and the foot bed frame has a female plate. The male plate and the female plate are pin-connected to each other through a pin shaft. One of the head bed frame and the foot bed frame is rotatable relative to the other one thereof by means of the pin shaft between a horizontal position and a folded position. In the folded position, the head bed frame and the foot bed frame are folded together facing each other, and both the head frame and the foot bed frame have gaps for accommodating elements that project from the bed frames.

What is claimed is: 
     
         1 . A foldable electric bed, comprising: a head bed frame which comprises a rotatable first bed plank and a head drive assembly for driving the first bed plank to rotate, at least a portion of the head drive assembly projecting from the head bed frame; and a foot bed frame which comprises gaps provided at sides of the foot bed frame, wherein the head bed frame has a projecting male plate, and the foot bed frame has a projecting female plate, wherein the male plate has a pin hole at an end thereof, and the female plate has another pin hole at an end thereof, the pin hole of the male plate and the pin hole of the female plate being matched with each other and pin-connected to each other through a pin shaft, wherein one of the head bed frame and the foot bed frame is rotatable relative to the other one thereof between a horizontal position and a folded position by means of the pin shaft, wherein in the horizontal position, the head bed frame and the foot bed frame are connected adjacent to each other on a same level, wherein in the folded position, the head bed frame and the foot bed frame are folded together facing each other, and at least a portion of the head drive assembly projecting from the head bed frame is disposed in the gaps of the foot bed frame. 
     
     
         2 . The foldable electric bed according to  claim 1 , wherein the foot bed frame comprises a rotatable fourth bed plank and a foot drive assembly for driving the fourth bed plank to rotate, at least a portion of the foot drive assembly projecting from the foot bed frame, and the head bed frame comprises gaps provided at sides of the head bed frame, wherein in the folded position, the head bed frame and the foot bed frame are folded together facing each other, at least a portion of the head drive assembly projecting from the head bed frame is disposed in the gaps of the foot bed frame, and at least a portion of the foot drive assembly projecting from the foot bed frame is disposed in the gaps of the head bed frame. 
     
     
         3 . The foldable electric bed according to  claim 2 , wherein the head bed frame further comprises: a second bed plank fixed in the head bed frame, the second bed plank being hinged to the first bed plank, and the head drive assembly comprises: a first pivotal rod projecting from the head bed frame, a first direct-drive motor, a first drive rod, and a first push rod, wherein the first direct-drive motor is hinged to an end of the head bed frame away from the male plate, two ends of the first drive rod are connected respectively to the first pivotal rod and the first direct-drive motor, and two ends of the first push rod are connected respectively to the first pivotal rod and the first bed plank. 
     
     
         4 . The foldable electric bed according to  claim 2 , wherein the foot bed frame further comprises: a third bed plank fixed in the foot bed frame, a fourth bed plank hinged to the third bed plank, and a fifth bed plank hinged to the fourth bed plank, and the foot drive assembly comprises: a second pivotal rod projecting from the foot bed frame, a second direct-drive motor, a second drive rod, and second push rod, wherein the second direct-drive motor is hinged to an end of the foot bed frame away from the female plate, two ends of the second drive rod are connected respectively to the second pivotal rod and the second direct-drive motor, and two ends of the second push rod are connected respectively to the second pivotal rod and the fourth bed plank. 
     
     
         5 . The foldable electric bed according to  claim 4 , wherein the first direct-drive motor and the second direct-drive motor are respectively disposed on two sides of a longitudinal symmetrical centerline of the electric bed. 
     
     
         6 . The foldable electric bed according to  claim 1 , wherein at least two pairs of the male plates and the female plates are provided at two sides of a longitudinal symmetrical centerline of the electric bed. 
     
     
         7 . The foldable electric bed according to  claim 1 , wherein at least one of the first bed plank, a second bed plank, a third bed plank, a fourth bed plank, and a fifth bed plank has a surface with a hole or a counter bore. 
     
     
         8 . The foldable electric bed according to  claim 1 , wherein the first bed plank and a second bed plank, a third bed plank and a fourth bed plank, and the fourth bed plank and a fifth bed plank, are hinged to each other through three respective hinges, wherein hinges at two sides are made of iron, and hinges in a middle are made of plastic. 
     
     
         9 . The foldable electric bed according to  claim 1 , wherein the foot bed frame further comprises a support leg, which, in the folded position, is supported on the head bed frame. 
     
     
         10 . The foldable electric bed according to  claim 1 , wherein in the folded position, gaps of the head bed frame and the gaps of the foot bed frame deviate from each other by a distance in a horizontal direction.