Front chain -picking device of bicycle
The utility model discloses a front chain -picking device of bicycle, include a drive unit, a drive unit, one group of chain frame, an and energy storage unit, drive unit has a motor and a play mechanical axis of connecting the motor, drive unit connects drive unit's play mechanical axis, dial...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The utility model discloses a front chain -picking device of bicycle, include a drive unit, a drive unit, one group of chain frame, an and energy storage unit, drive unit has a motor and a play mechanical axis of connecting the motor, drive unit connects drive unit's play mechanical axis, dial chain frame pin joint in drive unit, it dials chain frame switching position to make drive unit can see through the drive unit drive, the energy storage unit has 1 the 1st compression spring and 1 the 2nd compression spring, it is first, the 2nd compression spring locates the interior double -phase offside of dialling the chain frame that just lies in of drive unit, provide the energy storage effect on the one hand, be used for alleviateing the load of motor, on the other hand can provide and dial the chain frame at the buffering effect who receives the yawing force upon impact, make overall structure can and then obtain good protection. |
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