| 摘要 |
The present invention relates a bicycle that can be connected to each other such that it may be used as a one seat bicycle as well as the bicycle built for two or more people, wherein a top tube forming a frame is positioned to be separated from a fixed tube attached to a head tube, a clutch means is converted from an un-clutch state to a clutch state between the fixed tube and top tube, and a synchronizer is positioned between a front fork and the clutch means, which is separated at the clutch state and attached at the un-clutch state so that in case of the one seat bicycle, the head tube is integrally connected to the top tube while in case of a rear one of the bicycle built for two or more people, the head tube is pivotally converted to the top tube thereby the rear one not toppling over during steered as well as converting the one seat bicycle to the bicycle built for two or more people when two or more bicycle are connected to each other in tandem. In addition, in case of the bicycle built for two or more people, a foremost operator so as to control brakes of all rear connected bicycles at ones, to smoothly operate the brakes at the limited battery capacity and to minimize a consumption of the battery capacity, the present invention relates a bicycle that can be connected to each other such that the foremost operator controls the brakes of all rear connected bicycles at ones because a pulse phase signal generated by an encoder when the encoder is interworked with a brake lever, is inputted to all rear connected bicycles at ones, a duty rate obtained by assembling a phase signal corresponding to the pulse signal of the rotary encoder connected to a rotary shaft of the brake lever and a stepped waveform outputted from the frequency determining circuit, allows all brake modulator motor of the all the bicycles to be operated so that branch lines connected to the traditional brake is rolled up an released though a deceleration gear and is maintained at the rolled up state when a ratchet finger is go in gear with a ratchet gear positioned in a center of a spool thereby maintaining a brake force of all connected bicycles at the unpowered state.
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