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: 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: A compact hub-embedded multi-stage transmission is provided which is implemented to achieve multi-stage shifting by using a multi-stage planetary gear set having a one stage or two or more stages and a double one-way clutch in order to impart an overrunning function during inertial travel, and at the same time, to allow rapid shifting to be made even with a small force for manipulating a shift lever by means of use of a forced shift function even in a driven travel state. Accordingly, product marketability can be maximized, and rapid shifting can be made even with a small force for manipulating a shift lever by means of use of a forced shift function even in a driven travel state, thereby considerably improving shifting accuracy.

Abstract: A multi-stage transmission having more stages using planetary gear sets and employing a forced return means for achieving smooth shifting in a forward operation by acceleration manipulation and a reverse operation by deceleration manipulation is provided. The multi-stage transmission includes a shaft with both ends fixed, a sprocket for receiving a rotational force and a hub shell for outputting the rotational force; a shifting unit comprising one-way clutches and planetary gear sets, each of planetary gear sets being composed of a sun gear, planetary gears, a carrier and a ring gear provided within the hub shell to change the rotational force input through the sprocket and to output the changed rotational force to the hub shell; and a control unit for controlling shifting by controlling pawls provided on the shaft according to manipulation of a shift lever to selectively restrict rotation of the sun gear.

Abstract: Provided is a forced speed changing apparatus of bicycle. The forced speed changing apparatus of bicycle is characterized in that a pressure member is disposed at the pawl controlling ring 15, and a spline groove 27, 27a and 27b is formed at an inner circumference of the carrier 20 so that the pressure member is moved by rotation of the carrier 20 so as to press the pawl 12, 13 and to release engagement between the pawl 12, 13 and the sun gear 23, 24. Therefore the function and operation of the forced speed changing apparatus of bicycle can be enhanced.

Abstract: A transmission for a motor, which gives a normal rotation and constant speed output to an output cover when a driving shaft of the motor rotates in a normal direction and a normal rotation and speed-changed output to the output cover when the driving shaft of the motor rotates in a reverse direction, is provided. Interference caused by a reverse input can be prevented although rotation is reversely input from the output cover. The driving shaft includes a polygonal outer circumference; a ball-mounting ring is coupled to the outer circumference, the ball-mounting ring including, therein a constant speed ball and a speed changing ball spaced apart from each other by a predetermined distance so that upper and lower sides of them protrude; and the ball-mounting ring is frictionally fixed by an additionally fixed friction pin.

Abstract: A transmission is adapted to have a deceleration structure while generating an output in the same direction as when a motive power is rotated forwardly when the motive power is rotated reversely. The transmission includes a motor, an output cover, fixed shafts, and a transmission. The transmission is selectively connected according to the rotational direction of the driving shaft. The transmission provides a constant speed output in the forward direction since the driving shaft and the output cover are directly connected to each other when the driving shaft is rotated forwardly, but provides a decelerated output in the forward direction since a reduction planetary gear is geared between the driving shaft and the output cover when the driving shaft is rotated reversely.

Abstract: The present invention relates to an apparatus for automatically locking and unlocking a vehicle seat belt, which automatically locks and unlocks seat belts of a driver seat and a passenger seat of a vehicle. The apparatus includes: a first housing 10; a second housing 20; a belt-locking bar 40 having one end coupled to a hinge portion 30 provided at the center of a connection portion between the first and second housings 10 and 20; a movable block 61; a retractor 50; a chest protecting belt 60 having one end connected to the movable block 61; an abdomen protecting belt 70; and a controller 100 for controlling the rotation of the belt-locking bar 40. According to the present invention, the seat belt is automatically locked at the time of a start of a vehicle engine without being manually worn by a driver or a passenger getting in the vehicle.

Abstract: A transmission for use in an electrically-driven bicycle and/or a scooter is disclosed, in which the transmission coupled with a motor is embedded together with the motor in a hub of a rear or front wheel. According to the transmission and a transmission method, the power generated from the motor or a pedal is outputted through a transmission device to a hub shell of the wheel. The output of the motor or other output of the motor which is subject to a reduction unit is used as the input of the transmission device. The ring gear and the hub shell are connected to each other with an output pawl, so that the power cannot be reversely inputted when the hub shell is rotated with a higher speed than the ring gear.

Abstract: Provided is a forced speed changing apparatus of bicycle. The forced speed changing apparatus of bicycle is characterized in that a pressure member is disposed at the pawl controlling ring 15, and a spline groove 27, 27a and 27b is formed at an inner circumference of the carrier 20 so that the pressure member is moved by rotation of the carrier 20 so as to press the pawl 12, 13 and to release engagement between the pawl 12, 13 and the sun gear 23, 24. Therefore the function and operation of the forced speed changing apparatus of bicycle can be enhanced.

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.