CPC B62B 9/12 (2013.01) [B62B 7/02 (2013.01); B62K 27/003 (2013.01)] | 9 Claims |
1. A child trailer with a low folding thickness, comprising a bottom frame and a side frame, wherein a front end of the bottom frame is rotationally connected with a front end of the side frame;
a top support rod is fixed at a rear end of the side frame; a left end and a right end of the top support rod are respectively connected with an upper-section tail support rod rotating around an axis of the top support rod; a tail end of the upper-section tail support rod is connected with a first end of a folding joint; a second end of the folding joint is connected with a lower-section tail support rod; a rear end of the bottom frame is connected with a tail rack rotating around a shaft parallel to the axis of the top support rod; and a tail end of the lower-section tail support rod is rotationally connected with a middle part of the tail rack;
a folding locking member matched with the tail rack is fixed on the lower-section tail support rod or the upper-section tail support rod; and
rear wheels are mounted on a rear side of the bottom frame, and a towing rod device extending forward is fixed at a bottom of a front side of the bottom frame,
wherein the folding joint comprises a first rotating block, a second rotating block and a rotating piece; the first rotating block is fixedly connected with an upper connecting part; the upper connecting part is fixed to the upper-section tail support rod; the second rotating block is fixedly connected with a lower connecting part; the lower connecting part is fixed to the lower-section tail support rod; the rotating piece is located on a rear side of the first rotating block and a rear side of the second rotating block; two ends of the rotating piece are respectively hinged at a middle part of the first rotating block and a middle part of the second rotating block; and rotating piece grooves matched with the rotating piece are respectively formed on the rear side of the first rotating block and the rear side of the second rotating block; and
wherein an upper part of the tail rack is provided with two U-shaped bending parts; a middle part of each U-shaped bending part protrudes toward a rear side of the child trailer, an included angle of each U-shaped bending part is between 100° and 110°, and when the child trailer is unfolded, the tail rack is attached to the upper-section tail support rod, the folding joint and the lower-section tail support rod.
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