The invention provides a folding bicycle frame comprising a main force bearing seat. A vertical pipe is connected to the upper part of the main force bearing seat. A front frame is connected to the front part the main force bearing seat and a rear frame is connected to the rear part of the main force bearing seat. A clamping and locking control mechanism is arranged above the vertical pipe and a pipe casing mechanism is arranged below the vertical pipe. The front frame comprises an upper pipe, a head pipe and a lower pipe. The rear frame comprises an upper connection pipe, a vertical fork and a bottom fork. One end of the upper pipe is connected with the clamping and locking control mechanism and the other end of the upper pipe is connected with the lower pipe in a sliding manner. One end of the lower pipe is fixedly connected with the vertical pipe and the other end of the lower pipe is connected with the main force bearing seat. One end of the upper connection pipe is connected with the clamping and locking control mechanism and the other end of the upper connection pipe is connected with one end of the vertical fork. The vertical fork and the bottom fork are fixedly connected together. A folding rotation shaft is arranged on the bottom fork. The bottom fork is connected with the main force bearing seat through the rotation shaft. A first shock absorber is arranged between the lower pipe and the folding rotation shaft of the bottom fork. The pipe casing mechanism is connected with a support pipe fixedly connected to the joint of the upper connection pipe and the vertical fork. The folding bicycle frame is reasonable in structure and durable and convenient to use.
Folding bicycle frame
2015-07-08
Patent
Elektronische Ressource
Englisch
IPC: | B62K Fahrräder , CYCLES |
Folding frame and folding electric bicycle with folding frame
Europäisches Patentamt | 2015
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