Abstract: A shifting manipulation-assisting device and a hub-embedded transmission, wherein in controlling pawls that restrain rotation of sun gears to perform shifting in a planetary gear set, shifting control is properly performed even with a small manipulation force. The shifting manipulation-assisting device includes a pawl control ring having an inner peripheral surface to control laying-down of control pawls, and an outer peripheral surface formed with rotation restricting protrusions; an angle control member positioned on an inner periphery side of a driver; pressing members supported on the angle control member, and positioned between the unidirectionally inclined recesses and an inner peripheral surface of the driver; an elastic connecting body connected to resiliently support the pawl control ring; a fixed support member non-rotatably fixed to the shaft and rotatably supporting the driver; and a return spring connected to reversely rotate and accordingly return the angle control member.

Abstract: A transmission for a motor is provided, which optimizes a transmission for outputting a rotational force only in one direction at different shifting ratios according to forward/reverse rotation directions of a rotational shaft of the motor while enabling a reverse input, accurately transmits the rotational force without slippage and has durability even upon use thereof for a long period of time, thereby improving reliability and shifting accuracy and maximizing marketability and market competitiveness.

Abstract: A shifting manipulation-assisting device and a hub-embedded transmission, wherein in controlling pawls that restrain rotation of sun gears to perform shifting in a planetary gear set, shifting control is properly performed even with a small manipulation force. The shifting manipulation-assisting device includes a pawl control ring having an inner peripheral surface to control laying-down of control pawls, and an outer peripheral surface formed with rotation restricting protrusions; an angle control member positioned on an inner periphery side of a driver; pressing members supported on the angle control member, and positioned between the unidirectionally inclined recesses and an inner peripheral surface of the driver; an elastic connecting body connected to resiliently support the pawl control ring; a fixed support member non-rotatably fixed to the shaft and rotatably supporting the driver; and a return spring connected to reversely rotate and accordingly return the angle control member.

Abstract: The present invention relates to a transmission for a motor, and more particularly, to a transmission for a motor, which optimizes a transmission for outputting a rotational force only in one direction at different shifting ratios according to forward/reverse rotation directions of a rotational shaft of the motor while enabling a reverse input, accurately transmits the rotational force without slippage and has durability even upon use thereof for a long period of time. Accordingly, the transmission improves reliability and shifting accuracy and maximizes marketability and market competitiveness.

Abstract: Disclosed is an automatic speed changing device in which speed is automatically changed according to a predetermined amount of rotation without user's arbitrary manipulations.

Abstract: Disclosed is an automatic speed changing device in which speed is automatically changed according to a predetermined amount of rotation without user's arbitrary manipulations.

Abstract: Disclosed is an automatic speed changing device in which speed is automatically changed according to a predetermined amount of rotation without user's arbitrary manipulations.

Abstract: Disclosed is an automatic speed changing device in which speed is automatically changed according to a predetermined amount of rotation without user's arbitrary manipulations.

Abstract: An apparatus for changing the speed of bicycles, more particularly, an apparatus that changes the speed of bicycles using inner gears within a rear wheel hub and controls the inner gears by means of controllers mounted on a hub shaft. The apparatus includes: a driven sprocket receiving the driving force of a driving sprocket; a speed controlling portion, which includes a carrier that is fixed to one side of the driven sprocket, containing a plurality of planetary gears with ratchet-teeth formed along their inner circumferences; at least two sun gears for engaging each step of the planetary gears at their ratchet-teeth; a ring gear engaging the other side of the planetary gears; an output portion, including a hub shell transferring the driving force to the rear wheel by means of the carrier and the ring gear; a clutch means mounted between the carrier and the hub shell, and the ring gear and the hub shell, which selectively mediates the driving force; and a speed-change controlling portion.

Abstract: A driving direction changing apparatus of a rear hub of a bicycle, having a driving portion and a driving direction changing portion, which is capable of always outputting driving force in only one direction, that is, forward, by receiving the forward and rearward driving force of a pedal shaft, is provided.

Abstract: An apparatus for changing direction of driving force for bicycles, more particularly, an apparatus for changing direction of driving force for bicycles, which can travel bicycles forward by pedaling rearward as well as by pedaling forward, is provided.

Abstract: An apparatus for changing direction of driving force for bicycles, more particularly, an apparatus for changing direction of driving force for bicycles, which can travel bicycles forward by pedaling rearward as well as by pedaling forward, is provided.

Abstract: An apparatus for changing speed of bicycles, more particularly, an apparatus for changing speed of bicycles that changes speed of bicycles using inner gears inside a rear wheel hub and controlling the inner gears with controllers mounted on a hub shaft.

Abstract: An apparatus for changing direction of driving force for bicycles, more particularly, an apparatus for changing direction of driving force for bicycles, which can travel bicycles forward by pedaling rearward as well as by pedaling forward, is provided.

Abstract: A controller for changeable pedaling system of a bi-directional pedaling bicycle is provided.

Abstract: A power changing apparatus of a bicycle hub is provided. The apparatus including a transmission section at one side of a hub shell of a rear wheel, a bi-directional pedaling apparatus (BDPA) section at the other side thereof, and a clutch between the transmission section and the BDPA section provides the power in one direction at all times regardless of the direction of power applied thereto and changes speed according to the driving state of the bicycle. Also, a lever is inserted into the left side of a hub shaft having holes at both ends thereof to control the transmission section and a pin lever is inserted into the right side of the hub shaft to control the BDPA section. The power changing apparatus of the bicycle hub can be connected to a general bicycle compatible with it.

Abstract: An apparatus for changing rotation of a pedal shaft for a bicycle is provided, in which forward and rearward driving forces of the pedal shaft are convertible without a load, by indirect coupling, and the bicycle can be pulled rearward under the setting conditions for forward traveling. The apparatus includes: a sprocket housing installed to be freely rotatable centering the pedal shaft, to which a ring gear and a ratchet changing ring having the first one-way stoppers are fixed; a sun gear installed to be integrally rotatable with the pedal shaft; rearward rotation of the carrier can be checked by the first one-way stoppers of the ratchet changing ring; a changing gear ring coupled with the carrier to be elastically rotatable along the circumference with predetermined rotatable angle; a fixing housing having the second one-way stoppers capable of stopping rearward rotation of the carrier; and a stopper changing ring capable of controlling the second one-way stoppers of the fixing housing.

Abstract: An apparatus for changing power direction for a bicycle is provided, which can travel the bicycle forward all the times, and simultaneously idle the bicycle, and transmit the driving force to a pedal shaft, thereby pulling back the bicycle without reverse-load.