Foldable sofa armrest

Abstract

Disclosed is a foldable sofa armrest, including an armrest frame capable of being folded along a left-right direction. The armrest frame includes a first frame and a second frame arranged on left and right sides, respectively, and at least one movable support rod assembly arranged between the first frame and the second frame. The armrest frame has an unfolded state and a folded state. According to the present invention, the foldable sofa armrest is simple in structure. By arranging the movable support rod assembly, the armrest frame can be in the unfolded or folded state, the folded sofa armrest can be turned from the unfolded state to the folded state, and the packaging volume of the sofa armrest can be reduced, such that transportation is facilitated.

What is claimed is: 
     
         1 . A foldable sofa armrest, characterized by comprising an armrest frame capable of being folded along a left-right direction, the armrest frame comprises a first frame and a second frame arranged on left and right sides, respectively, and at least one movable support rod assembly arranged between the first frame and the second frame; the armrest frame has an unfolded state and a folded state; when the armrest frame is in the unfolded state, the movable support rod assembly is unfolded in the left-right direction, and the first frame and the second frame are arranged on left and right sides of the movable support rod assembly, respectively; when the armrest frame is in the folded state, the movable support rod assembly is folded in the left-right direction, such that the first frame and the second frame are drawn close to each other and fit each other. 
     
     
         2 . The foldable sofa armrest according to  claim 1 , wherein there are two movable support rod assemblies, and the two movable support rod assemblies are assembled at front and back ends of the first frame and the second frame, respectively. 
     
     
         3 . The foldable sofa armrest according to  claim 1 , wherein the movable support rod assembly comprises a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod intersect with each other and are in pivot joint at the intersection; an end of the first connecting rod is pivotally connected to the first frame, and the other end of the first connecting rod is capable of either rotating relatively or being relatively slidably connected to the second frame; and one end of the second connecting rod is pivotally connected to the second frame, and the other end of the second connecting rod is capable of either rotating relatively or being relatively slidably connected to the first frame. 
     
     
         4 . The foldable sofa armrest according to  claim 1 , wherein an end of the first connecting rod is pivotally connected to the second frame, and the other end of the first connecting rod is capable of either rotating relatively or being relatively slidably connected to the first frame; and one end of the second connecting rod is pivotally connected to the first frame, and the other end of the second connecting rod is capable of either rotating relatively or being relatively slidably connected to the second frame. 
     
     
         5 . The foldable sofa armrest according to any one of  claims 1-4 , wherein a limiting mechanism is assembled between the first frame and the second frame. 
     
     
         6 . The foldable sofa armrest according to  claim 5 , wherein the limiting mechanism ( 4 ) comprises a first limiting plate and a second limiting plate; an end of the first limiting plate is pivotally connected to the first frame, an end of the second limiting plate is pivotally connected to the second frame, another end of the first limiting plate is pivotally connected to another end of the second limiting plate, a limiting groove opened upwards is formed in a position, close to the first limiting plate, of an end of the second limiting plate, and correspondingly, a positioning plate fitting the limiting groove is formed at an end of the first limiting plate; and when the armrest frame is in the unfolded state, the first limiting plate and the second limiting plate move downwards, such that the positioning plate is clamped into the limiting groove. 
     
     
         7 . The foldable sofa armrest according to  claim 3 , wherein each of inner sides of the first frame and the second frame is provided with four guiding support rods; the first connecting rod and the second connecting rod are pivotally connected to the guiding support rods ( 5 ), and the first connecting rod and the second connecting rod are equipped with sliding parts at the intersections with the guiding support rods; and each of the sliding parts is a rotating shaft, each of the guiding support rods is provided with a guide slot) extending along an up-down direction, and the rotating shaft ( 6 ) is inserted into the guide slot) in a sliding fit manner. 
     
     
         8 . The foldable sofa armrest according to  claim 7 , wherein the first connecting rod, the second connecting rod and the guiding support rods all are plate-like; when the armrest frame is in the folded state, the first connecting rod and the second connecting rod are drawn close to each other in the left-right direction and are jointly located on a front side or a rear side of the guiding support rod, such that the first frame and the second frame fit each other. 
     
     
         9 . The foldable sofa armrest according to  claim 8 , wherein the guiding support rods are fixedly arranged on the first frame and the second frame through connecting parts ( 7 ), the connecting part is positioning block or reinforcing plate. 
     
     
         10 . The foldable sofa armrest according to  claim 1 , wherein a transverse positioning plate is fixedly arranged in the inner middle part of the first frame in a length direction, and multiple protective rods) are fixedly arranged on the outer side of the second frame in a length direction.