Abstract: A fastening device for a bicycle includes a fixed assembly and a fastening assembly. The fixed assembly is fixedly mounted to the frame of the bicycle, and the fastening assembly is used for supporting an article. The first moveable socket and the second moveable socket of the fastening assembly are snapped into the first fixed holder and the second fixed holder of the fixed assembly correspondingly, so that the fastening assembly and the supported article are detachedly mounted to the frame of the bicycle. The fastening device for a bicycle can facilitate the disengaging and engaging of the article, prevent wear of the surface of the article, and enhance the fixing strength of the fastening assembly.

Abstract: A bicycle fastener includes a fixing assembly (1) and a fastener assembly (3). The fixing assembly (1) is fixedly mounted to the frame (5) of the bicycle, and the fastener assembly (3) is used for supporting an article. The first moveable seat (31) and the second moveable seat (32) of the fastener assembly (3) are snapped into the first fixing seat (11) and the second fixing seat (12) of the fixing assembly (1) correspondingly, so that the fastener assembly (3) and the supported article are detachedly mounted to the frame (5) of the bicycle. The bicycle fastener can facilitate the disengaging and engaging of the article, prevent wear of the surface of the article, and enhance the fixing strength of the fastener assembly.

Abstract: A carrying trailer for use with bicycles includes a spine, a plurality of branch members and a wheel. The spine has a connecting portion at one end thereof which is adapted to couple to a bicycle. Each branch member has a ring and a supporting arm. The ring is rotatably mounted around the spine. One end of the supporting arm is fixed to an outer radial surface of the ring and the other end thereof extends away from an axis of the ring, with the supporting arm extending in a radial direction of the ring. The wheel pivotably couples to the other end of the spine. Consequently, positions of the branch members on the spine can be adjust to form a loading plane, or to stack the supporting arms of the branch members up at the same side of the spine for reducing storage space.