The invention discloses a speed change device and a bicycle with the same. The speed change device comprises a selector shaft, two groups of gear shifting connectors, a planetary gear mechanism, an output device and a shifter bar, two groups of mounting grooves are formed in the circumferential surface of the selector shaft, the two groups of gear shifting connectors penetrate the mounting grooves, the planetary gear mechanism comprises an inner gear ring, a planetary carrier, a planetary gear and a central gear, the inner gear ring, the planetary carrier and the central gear sleeve the selector shaft, the central gear and the planetary carrier are arranged in the inner gear ring, the inner gear ring is fixedly connected with a frame, the output device sleeves the central gear or the planetary carrier and is fixedly connected to the central gear or the planetary carrier, and an annular selector bump is arranged on the circumferential surface of the shifter bar. The shifter bar moves to the annular selector bump and is positioned at the connection position of the selector shaft and the planetary carrier or the central gear, and the gear shifting connectors project over the circumferential surface of the selector shaft and are clamped with the planetary carrier or the central gear, so that the selector shaft is locked with the planetary carrier or the central gear. Compared with the prior art, the speed change device has the advantages that the shifter bar can move to smoothly shift gears when the bicycle is in a static state and in a running state, rapid starting is facilitated, and time and labor are saved.
Speed change device and bicycle with same
2015-04-22
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
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