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公开(公告)号:US20210016853A1
公开(公告)日:2021-01-21
申请号:US16514969
申请日:2019-07-17
Applicant: Ping-Lin Yu
Inventor: Ping-Lin Yu
Abstract: The main structure of the present invention comprises: a carrying-frame set with a cargo-carrying structure, direction-guiding wheels, and a connection component comprising a sleeving-connection element and a quick-dismantling component; wherein the connection component is provided for connecting a power-providing frame set with an adjustment component comprising an assembly-connection element and a connection portion, and a steering component is set at the side of the connection component. Thereby, the user can adjust the distance between the carrying-frame and the power-providing frame to achieve the advantage of saving the accommodation space through the steering component.