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.

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.

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 gear wheel for a transmission, in particular a draw key transmission, is disclosed. The gear wheel contains a first ring element and a second ring element, the first ring element having a driving contour for receiving a shaft pin of the transmission and the second ring element having a toothing on an outer surface.

A gear wheel for a transmission, in particular a draw key transmission, is disclosed. The gear wheel contains a first ring element and a second ring element, the first ring element having a driving contour for receiving a shaft pin of the transmission and the second ring element having a toothing on an outer surface.

An axle assembly that includes a barrel cam. The barrel cam may be rotatable about a barrel cam axis and may be operatively connected to a first shift collar. Rotation of the barrel cam about the barrel cam axis may control movement of the first shift collar along a first axis.

An axle assembly that includes a barrel cam. The barrel cam may be rotatable about a barrel cam axis and may be operatively connected to a first shift collar. Rotation of the barrel cam about the barrel cam axis may control movement of the first shift collar along a first axis.

A first slider and a fifth-speed driving gear are arranged along an axial direction on a driving shaft. A shift fork has an end located in a guide groove of a shift drum, and another end connected to the first slider. In gear-shifting to a fifth speed, the first slider moves on the driving shaft so that a plurality of fifth-speed dog projections and a plurality of fifth-speed dog recesses mesh with each other. At least four of the plurality of fifth-speed dog projections and at least four of the plurality of fifth-speed dog recesses mesh within a range of 90 degrees at one side in the circumferential direction of the fifth-speed driving gear and a range of 90 degrees at another side in the circumferential direction of the fifth-speed driving gear with respect to a reference line.

A first slider and a fifth-speed driving gear are arranged along an axial direction on a driving shaft. A shift fork has an end located in a guide groove of a shift drum, and another end connected to the first slider. In gear-shifting to a fifth speed, the first slider moves on the driving shaft so that a plurality of fifth-speed dog projections and a plurality of fifth-speed dog recesses mesh with each other. At least four of the plurality of fifth-speed dog projections and at least four of the plurality of fifth-speed dog recesses mesh within a range of 90 degrees at one side in the circumferential direction of the fifth-speed driving gear and a range of 90 degrees at another side in the circumferential direction of the fifth-speed driving gear with respect to a reference line.