Intermediate drive motor assembly for electric bicycles comprising a power transmission
By designing a power transmission device and an intermediate drive motor combination in an electric bicycle, and using two sets of transmission gears and a shifter sub-assembly, the problems of low mechanical efficiency and high cost are solved, and electric bicycle power transmission with multiple bicycle speed ratios is realized.
CN122249368APending Publication Date: 2026-06-19THE GATES CORP
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- THE GATES CORP
- Filing Date
- 2024-09-25
- Publication Date
- 2026-06-19
Smart Images
Figure CN122249368A_ABST
Abstract
An intermediate drive motor assembly for an electric bicycle includes a power transmission device having a crankshaft subassembly, a motor subassembly, a sensor drive subassembly, and a transmission subassembly. The sensor drive subassembly is operable to receive a first power output from the crankshaft subassembly and a second power output from the motor subassembly, and to combine the first and second power outputs into a combined power output. The transmission subassembly is operable to adjust the combined power output via a first transmission combination or a second transmission combination to form an adjusted power output. The transmission subassembly is operable to shift gears between a first transmission gear combination and a second transmission gear combination via a countershaft subassembly, the countershaft subassembly including a camshaft rotatable within a pin shaft. Rotation of the camshaft within the pin shaft causes different pin combinations to engage the transmission gears.
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