Column-head type high-degree-of-freedom folding trailer

Abstract

The invention relates to a column-head type high-degree-of-freedom folding trailer, so that the folding trailer has sufficient degree of freedom when folding and unfolding. The trailer comprises a cloth car and a folding frame for supporting the cloth car. The bottom of the folding frame is provided with a wheel assembly and one end of the folding frame is connected with a pull rod. A folding frame includes a bottom support assembly and a folding fence, a bottom support assembly has four bottom corner connectors distributed at four corners of a folding frame and a center connector located at acenter position of the four bottom corner connectors, the central connecting head and the bottom corner connecting head are connected through a bottom connecting rod, one end of the bottom connectingrod is rotatably connected with the bottom corner pillar head on the bottom corner connecting head through the horizontal axis, the bottom corner pillar head can be horizontally rotatably installed on the bottom corner connecting head, the other end of the bottom connecting rod is rotatably connected with the center pillar head on the center connecting head through the horizontal axis, and the center pillar head can be horizontally rotatably installed on the center connecting head; a vertical pole is arranged on the bottom corner connecting head, and a folding fence is arranged between two adjacent vertical poles.

Description

technical field [0001] The invention relates to a column-type high-degree-of-freedom folding trailer. Suitable for use in the field of trailer technology. Background technique [0002] With the improvement of people's living standards, the desire for outdoor activities is becoming stronger and stronger, and the requirements for the convenience of life are getting higher and higher. When doing outdoor activities, it is necessary to carry some odds and ends required for activities. At this time, it is easy to fold and carry Folding trailers came into being. [0003] The Chinese patent No. 201520356694.2 discloses "a folding trailer", which includes wheels, folding brackets, and a tabletop, but the connection between the base rod and the base adopts a low-degree-of-freedom hinge method with only one rotational degree of freedom, and During the folding or unfolding process of the folding trailer, the base rod and the base have both rotation around the horizontal axis and rotat...

AI Technical Summary

Problems solved by technology

[0003] The Chinese patent No. 201520356694.2 discloses "a folding trailer", which includes wheels, folding brackets, and a tabletop, but the connection between the base rod and the base adopts a low-degree-of-freedom hinge method with only one rotational degree of freedom, and During the folding or unfolding process of the folding trailer, the base rod and the base have both rotation around the horizontal axis and rotation around the vertical axis, which requires two degrees of freedom of rotation. Insufficient degrees of freedom cause interference, which affects the smooth progress of folding and unfolding activities

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