| 摘要 |
A bicycle with a slant backrest frame includes a bicycle embodiment, and a power unit wherein the bicycle embodiment is equipped with a saddle having a slant backrest, and a rectangular central tube disposed under the saddle thereof in communication with a lower tube to which a switch device is fixedly attached at a preset position. The power unit made up of a rear loading bracket and a storage battery is adapted to the central tube with the rear loading bracket securely fixed to a slant flat opening of the central tube and the storage battery retained at a receiving cavity of the central tube therein. In practical use, the bicycle embodiment can be either pedaled by feet or electrically moved via the power unit conductively linked to the switch device thereof. Besides, first/second electrical wires of the switch device and first/second conducting wires of the storage battery thereof are concealed at the central and the lower tubes therein for protection thereof as well as the overall beauty of the bicycle embodiment thereof. Moreover, via the separate design of the power unit and the bicycle embodiment thereof, the storage battery can be individually withdrawn from the receiving cavity thereof for recharging, enable a rider to make use of the bicycle embodiment without waiting for the completion of the charging operation thereof.
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