| 摘要 |
<p>A trailer connection unit for a bicycle, capable of connecting a trailer to a bicycle comprises: a holding frame fixed on the trailer, and having a hole at the top center; a first connection frame having a shaft pin fitted in the hole of the holding frame, and an insertion groove recessed in the front end; a hole formed on the circumference of the front end of the first connection frame on which the insertion groove is formed; a second connection frame having the end inserted in the insertion groove of the first connection frame; two or more connection holes formed on the circumference of the end of the second connection frame, and selectively positioned in the hole of the first connection frame according to the inserted depth of the second connection frame inserted in the insertion groove of the first connection frame; a pin fitted in the connection hole of the first connection frame and one connection hole of the second connection frame to fix the second connection frame on the first connection frame; and a third connection frame pin-coupled in a state of being fitted in the front end of the second connection frame, and coupled to a rear wheel shaft of the bicycle to connect the trailer to the bicycle. The third connection frame is folded in a specific direction while being rotated on a hinge in a state where the front end of the second connection frame and the end of the third connection frame are hinge-connected to each other.</p> |
