Folding trailer
View Patent ↗The invention relates to the trailer and particularly serves for a folding trailer, comprising a rod assembly, four vertical pipes, a linkage sliding sleeve, a left-right folding assembly and a front-back folding assembly, the left and right folding assemblies include six cross tubes, and the front-rear folding assemblies include two cross straight tubes and two cross bend tubes, to ensure that the intersections of the second and third cross tubes, as well as the fourth and fifth cross tubes, are shifted down, as is the intersection of the second cross elbow and the second cross straight tube; The highest point of the constricted second, third, fourth, and fifth crossovers shall be lower than the horizontal line of the vertex-angle fastener, which ensures the highest point of the contracted folding trailer is level with the highest point of the vertex angle fixing piece not to raise the contracted height.
1 . A folding trailer comprises a vertical rod assembly comprising a first fixed vertical pipe, a second fixed vertical pipe, a third fixed vertical pipe, and a fourth fixed vertical pipe,
wherein the vertical rod assembly further comprises a top angle fixing member which is respectively fixed on tops of four vertical pipes and a linkage sliding sleeve which is gliding connected with the four vertical rods, respectively;
left and right folding assemblies are arranged between the second and fourth fixed vertical pipes and between the first and third fixed vertical pipes, the first and second fixed vertical pipes and the third and fourth fixed vertical pipes are provided with front and rear folding assemblies;
the left and right folding assemblies comprise a first side cross tube and a sixth side cross tube rotationally matched with the top angle fixing member, respectively,
the left and right folding assemblies also comprise a second side cross tube and a fifth side cross tube rotationally matched with the linkage sliding sleeve, respectively,
the left and right folding assemblies also comprise a third side cross tube and a fourth side cross tube rotationally matched with the first side cross tube and the sixth cross tube, respectively;
the front and rear folding assemblies include a first cross bend tube and a first cross straight tube that are rotationally matched with the top angle fixing member, respectively,
the front and rear folding assemblies also comprise a second cross bend tube and a second cross straight tube rotationally matched with the linkage sliding sleeve, respectively;
a handle assembly is also arranged between the first fixed vertical pipe and the second fixed vertical pipe,
the handle assembly includes two sleeves at bottoms of the first and second fixed vertical pipes, respectively;
wherein a fixed rod sleeve that is rotationally matched with the two sleeves is arranged at a cross center of the two sleeves, and a third telescopic cylinder is fixed at a center of the fixed rod sleeve,
the third telescopic cylinder is provided with a second telescopic cylinder on top of which a first telescopic cylinder is fitted, a handle is fixed on a top of the first telescopic cylinder.
2 . The folding trailer according to claim 1 , wherein the first side cross tube is connected with the second side cross tube, the fourth side cross tube and the sixth side cross tube respectively by a rotating shaft,
the second side cross tube and the third side cross tube are connected by the rotating shaft,
the third side cross tube and the sixth side cross tube are connected by the rotating shaft,
the fourth side cross tube and the fifth side cross tube are connected by the rotating shaft, and
the fifth side cross tube and the sixth side cross tube are connected by the rotating shaft.
3 . The folding trailer according to claim 1 , wherein the first cross bend tube and the second cross bend tube are connected by a rotating shaft,
the first cross straight tube and the second cross straight tube are connected by the rotating shaft, and
the first cross bend tube and the first cross straight tube are connected by the rotating shaft,
the second cross bend tube and the second cross straight tube are connected by the rotating shaft.
4 . The folding trailer according to claim 1 , wherein the vertical rod assembly also comprises a bottom angle fixing member which is respectively fixed at bottoms of the four vertical pipes, a bottom of the vertical rod assembly is provided with a bottom support assembly,
the bottom support assembly comprises a first bottom connecting pipe, a second bottom connecting pipe, a third bottom connecting pipe, and a fourth bottom connecting pipe in an X-shape respectively and rotationally matched with the four bottom angle fixing member pieces, a cross center of the first bottom connecting pipe, the second bottom connecting pipe, the third bottom connecting pipe and the fourth bottom connecting pipe is also provided with a bottom connecting piece which is rotationally matched with the four bottom connecting pipes respectively.
5 . The folding trailer according to claim 1 , wherein a wheel assembly is arranged at a bottom of the vertical rod assembly,
the wheel assembly comprises wheels at bottoms of the first fixed vertical pipe, the second fixed vertical pipe, the third fixed vertical pipe and the fourth fixed vertical pipe, respectively,
the wheels at bottoms of the first and second fixed vertical pipes and a connection of the two vertical pipes are respectively provided with a universal wheel fork,
the wheels at the bottom of the third and fourth fixed vertical pipes and the connection of the two vertical tubes are respectively provided with a directional fork.
6 . The folding trailer according to claim 4 , wherein when the fold-up trailer shrinks, the bottom connecting piece rises, sides of the first bottom connecting pipe, the second bottom connecting pipe, the third bottom connecting pipe, and the fourth bottom connecting pipe near the bottom connecting piece rises with the bottom connecting piece,
sides of the first bottom connecting pipe, the second bottom connecting pipe, the third bottom connecting pipe, and the fourth bottom connecting pipe near the bottom angle fixing member is closed to the bottom connecting piece.
7 . The folding trailer according to claim 2 , wherein when the folding trailer shrinks, four linkage sliding sleeves simultaneously descend, included angles on both sides of the first side cross tube and the second side cross tube, and included angles on both sides of the fifth side cross tube and the sixth side cross tube are increased,
an angle between lower ends of the second side cross tube and the third side cross tube, and an angle between the fourth side cross tube and the fifth side cross tube are reduced,
an included angle of lower ends of the third and fourth side cross tubes, and an included angle of upper ends of the first and sixth cross tubes are reduced.
8 . The folding trailer according to claim 3 , wherein when the fold-up trailer shrinks, included angles on both sides of the first cross bend tube and the second cross bend tube, and included angles on both sides of the first cross straight tube and the second cross straight tube are increased,
an included angle of lower ends of the first cross bend tube and the first cross straight tube, and an included angle of upper end of the second cross bend tube and the second cross straight tube are reduced.
9 . The folding trailer according to claim 5 , wherein when the folding trailer shrinks, the fixed rod sleeve rises and an angle between lower ends of the two sleeves decreases.