Foldable bed

Abstract

A foldable bed having a frame and a cover attached to the frame. The frame has two handles, four legs and two identical side beams which is linked with four pairs of scissoring bars. All parts are able to be solid therefore a strength thereof can be significantly increased and a noise bring by telescoping tubes may be eliminated.

What is claimed is: 
     
         1 . A foldable bed comprising:
 a frame having a left handle and a right handle, a first left side beam and a second left side beam pivotally connected to said left handle, a first right side beam and a second right side beam pivotally connected to said right handle, a first left, a second left, a first right, and a second right leg respectively pivotally connected to said first left, said second left, said first right, and said second right side beam near a free end of each said side beam, a first left, a second left, a first right, or a second right lower bar respectively pivotally connected to said first left, said second left, said first right or said second right legs in middle of each said leg, a first left, a second left, a first right, or a second right upper bar respectively pivotally connected to a middle of said first left, said second left, said first right and said second right side beam with an end thereof and respectively pivotally connected to a free end of said first left, said second left, said first right, and said second right lower bar with the other end thereof, a left peddling and a right peddling, a first left and a second left tilt bar each having one end pivotally connected to said left peddling and a free end respectively pivotally connected to a middle of said first left and said second left upper bar, a first right and a second right tilt bars each having one end pivotally connected to said right peddling and a free end respectively pivotally connected to a middle of said first right and said second right upper bars, a first left, a second left, a first right, and a second right linking bars each having one end respectively pivotally connected to a middle of said first left, said second left, said first right, or said second right tilt bars and a free end respectively pivotally connected to the left and the right handles, a first end bar pivotally connected to a free end of said first left side beam at one end thereof and to a free end of said first right leg at the other end thereof, an opposite first end bar pivotally connected to a free end of said first right side beam at one end thereof and to a free end of said first left leg at the other end thereof, said first and said opposite first end bars being hinged at about a middle portion hereof and able to scissor with respect to each other, a second end bar pivotally connected to a free end of said second left side beam at one end thereof and to a free end of said second right leg at the other end thereof, an opposite second end bar pivotally connected to a free end of said second right side beam at one end thereof and to a free end of said second left leg at the other end thereof, said first and said opposite second end bars being hinged at about a middle portion hereof and able to scissor with respect to each other, a first middle bar pivotally connected to said left handle at one end thereof and to a point of said first right tilt bar near said right foot at the other end thereof, an opposite first middle bar pivotally connected to said right handle at one end thereof and to a point of said first left tilt bar near said left peddling at the other end thereof, said first and said opposite first middle bars being hinged at about a middle portion hereof and able to scissor with respect to each other, a second middle bar pivotally connected to said left handle at one end thereof and to a point of said second right tilt bar near said right peddling at the other end thereof, an opposite second middle bar pivotally connected to said right handle at one end thereof and to a point of said second left tilt bar near said left peddling at the other end thereof, said first and said opposite second middle bars being hinged at about the middle portion hereof and able to scissor with respect to each other; and,   a cover attached to the frame.   
     
     
         2 . The foldable bed as claimed in  claim 1 , wherein said frame further has sleeves covering on and being slidable with respect to respect said first left, second left, first right, or second right tilt bar between respect said first left, second left, first right, and second right linking bars and respect said opposite first middle, opposite second middle, first middle or second middle bars, and reinforcing bars pivotally connected to one of said sleeves at one end thereof and to a middle of respect first left, second left, first right, or second right linking bars at the other end thereof.