A shifting device for a transmission unit of a vehicle, in particular a vehicle that is driven by muscle force. The transmission unit has a first shaft, which is formed as a hollow shaft, on which a plurality of free gears is mounted. The free gears are in engagement with a corresponding plurality of gearwheels, which are mounted on a second shaft, wherein the free gears are connectable to the first shaft by means of selecting devices. The selecting devices can be actuated by means of a camshaft arranged coaxially in the first shaft, wherein the camshaft is connected to a driving device in order to be rotated relative to the first shaft to actuate the selecting devices.

The present invention provides a multi-speed transmission including: a driving shaft rotated by an input rotational force; a plurality of driving gears coupled to the driving shaft to be rotated by the rotation of the driving shaft; a plurality of transmission gears engaged with the driving gears; a transmission shaft including a plurality of pawls moved in and out of the outer circumferential surface, and coupled to the transmission gears, specifically, selectively coupled to at least a few of the transmission gears according to the in and out-movement of the pawls; a transmission control means for selectively controlling the in and out-movement of the pawls; a plurality of driven gears engaged with at least a few of the transmission gears; and a driven shaft coupled to the plurality of driven gears and transferring the rotational force to an object to be driven.

A directional transmission mechanism, a directional sprocket apparatus using the directional transmission mechanism, and a pedal device using the directional sprocket apparatus are disclosed. The directional transmission mechanism includes a driving shaft, an output shaft, a co-rotating wheel, a reverse-rotating wheel, and a switching mechanism. The co-rotating wheel set drives the output shaft to rotate in a direction that is the same as that of the driving shaft. The reverse-rotating wheel set drives the output shaft to rotate in a direction opposite to that of the driving shaft. The switching mechanism switches the driving shaft to drive the co-rotating wheel set or drive the reverse-rotating wheel set to rotate, so as to enable the output shaft to rotate directionally. The co-rotating wheel set is connected with the driving shaft and the output shaft, and the reverse-rotating wheel set is connected with the driving shaft and the output shaft.

A directional transmission mechanism, a directional sprocket apparatus using the directional transmission mechanism, and a pedal device using the directional sprocket apparatus are disclosed. The directional transmission mechanism includes a driving shaft, an output shaft, a co-rotating wheel, a reverse-rotating wheel, and a switching mechanism. The co-rotating wheel set drives the output shaft to rotate in a direction that is the same as that of the driving shaft. The reverse-rotating wheel set drives the output shaft to rotate in a direction opposite to that of the driving shaft. The switching mechanism switches the driving shaft to drive the co-rotating wheel set or drive the reverse-rotating wheel set to rotate, so as to enable the output shaft to rotate directionally. The co-rotating wheel set is connected with the driving shaft and the output shaft, and the reverse-rotating wheel set is connected with the driving shaft and the output shaft.

An electric motorcycle includes a transmission gear set mounted in a gearbox housing and having a power input shaft inserted through a middle block of the gearbox and a power input pulley mounted on the power input shaft, an electric motor mounted on one side of the middle block and having a motor pulley mounted on the motor shaft thereof, and a transmission belt coupled between the motor pulley and the power input pulley for enabling the electric motor to rotate the power input shaft of the transmission gear set through the transmission belt, a gear shift pedal and a gear shift axle for gear shifting, and a speed output chain gear mounted on an output shaft of the transmission gear set and driven by the output shaft to rotate the rear wheel of the electric motorcycle through a chain.

A transmission mechanism includes a plurality of drive gears disposed on a counter shaft and a plurality of driven gears disposed on a drive shaft. Each of the plurality of drive gears is engaged with each of the plurality of driven gears to forma plurality of shift-gear pairs. An eight-speed drive gear, which forms an eight-speed shift-gear pair having the smallest reduction gear ratio, and a seven-speed drive gear, which forms a seven-speed shift-gear pair having the second smallest reduction gear ratio, are disposed adjacent one another at a center portion of an arrangement of the drive gears. An eight-speed driven gear, which forms the eight-speed shift-gear pair, and a seven-speed driven gear, which forms the seven-speed shift-gear pair, are disposed adjacent one another at a center portion of an arrangement of the driven gears.

A transmission mechanism includes a plurality of drive gears disposed on a counter shaft and a plurality of driven gears disposed on a drive shaft. Each of the plurality of drive gears is engaged with each of the plurality of driven gears to forma plurality of shift-gear pairs. An eight-speed drive gear, which forms an eight-speed shift-gear pair having the smallest reduction gear ratio, and a seven-speed drive gear, which forms a seven-speed shift-gear pair having the second smallest reduction gear ratio, are disposed adjacent one another at a center portion of an arrangement of the drive gears. An eight-speed driven gear, which forms the eight-speed shift-gear pair, and a seven-speed driven gear, which forms the seven-speed shift-gear pair, are disposed adjacent one another at a center portion of an arrangement of the driven gears.

A bicycle driving device allows control to be executed in accordance with the riding conditions. The bicycle driving device includes a planetary mechanism, a first motor, a second motor, and an output part. The planetary mechanism includes an input body to which rotation of a crankshaft is inputted, an output body that rotates when the input body rotates, and a transmission body that transmits rotation of the input body to the output body. The first motor is configured to rotate the input body or the output body. The second motor is configured to rotate the transmission body. The output part includes a hole through which the crankshaft extends. The output part is rotatable about the axis of the crankshaft, and rotation of the output body is transmitted to the output part.

A bicycle driving device allows control to be executed in accordance with the riding conditions. The bicycle driving device includes a planetary mechanism, a first motor, a second motor, and an output part. The planetary mechanism includes an input body to which rotation of a crankshaft is inputted, an output body that rotates when the input body rotates, and a transmission body that transmits rotation of the input body to the output body. The first motor is configured to rotate the input body or the output body. The second motor is configured to rotate the transmission body. The output part includes a hole through which the crankshaft extends. The output part is rotatable about the axis of the crankshaft, and rotation of the output body is transmitted to the output part.

A drive assemblage is described for a vehicle drivable by muscle energy and/or—in particular additionally—by motor energy, to an electric bicycle, e-bike, or pedelec, having: a crank spindle rotatable around a rotation axis for receiving a first torque that is generated in particular by muscle energy; and a transfer device that is embodied to transfer the first torque from the crank spindle to an output drive element couplable to a drive wheel of the vehicle, and is embodied, by way of an—in particular automatically—shiftable spur gear transmission, for a variable conversion ratio, in which: the spur gear transmission has a first shiftable spur gear transmission and a second shiftable spur gear transmission separate therefrom; the first shiftable spur gear transmission and the second shiftable spur gear transmission have a common transmission output to the couplable output drive element; and the first shiftable spur gear transmission and the second shiftable spur gear transmission are couplable alternatingly and alternatively into the power and torque flow of the transfer device.