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US 9,174,533 B2Granted
Drive structure for electric bicycle
AssigneeMando Corporation
InventorIl Yong Kim
Life of this patent
Estimating the term…
Abstract
A motor structure for an electric bicycle including a motor provided with a rotor and a stator to generate a rotary force to drive a wheel of the electric bicycle, the rotor having an accommodation space formed at a center thereof, a first decelerator unit disposed in the accommodation space and connected to a rotating shaft that is rotated together with the rotor, a second decelerator unit connected to the first decelerator unit and disposed outside the motor, and a motor housing to accommodate the motor and the second decelerator unit.
Claims10
A motor structure of an electric bicycle, the motor structure comprising:
- a motor provided with a rotor and a stator to generate a rotary force to drive a wheel of the electric bicycle, the rotor having a portion encircling an accommodation space defined therewithin;
- a first decelerator unit disposed in the accommodation space to be radially enclosed by the encircling portion of the rotor and connected to a rotating shaft that is rotated together with the rotor;
- a second decelerator unit connected to the first decelerator unit and disposed outside the motor;
- and
- a motor housing to accommodate the motor and the second decelerator unit,
- wherein the first decelerator unit comprises:
- a first sun gear installed on the rotating shaft;
- a plurality of first planet gears disposed around the first sun gear while being engaged with the first sun gear;
- a first carrier connected to a first center shaft of each of the plurality of first planet gears to output a rotary force;
- and
- a first ring gear fixed while being circumscribed on peripheries of the plurality of first planet gears.
8 more elements
Dependencies are inferred from the claim text.