초록 ▼

A crank-CVT transmission which has a freewheel device connected to an output shaft of the transmission. The device selectively enables and blocks a relative rotation between the device and the output shaft. The transmission further has a switching unit adapted to switch the device and an internal sh

A crank-CVT transmission which has a freewheel device connected to an output shaft of the transmission. The device selectively enables and blocks a relative rotation between the device and the output shaft. The transmission further has a switching unit adapted to switch the device and an internal shaft, which can be connected to the output shaft and by a connecting element to a differential. The internal shaft can be displaced in the axial direction of the output shaft. The transmission further has an actuator interacting with the switching unit and adapted to initiate the switch of the device. The actuator has a first mechanism adapted to displace the internal shaft in the axial direction, disconnecting the internal shaft from the differential a second mechanism adapted to drive the switching unit. The second mechanism is coupled to the first mechanism and is driven after the first mechanism.

대표청구항 ▼

1. A crank-CVT transmission, comprising: an output shaft;a freewheel device connected to the output shaft, the output shaft adapted to optionally enable and block a relative rotation between the freewheel device and the output shaft;a shifting unit adapted to shift the freewheel device;a differentia

1. A crank-CVT transmission, comprising: an output shaft;a freewheel device connected to the output shaft, the output shaft adapted to optionally enable and block a relative rotation between the freewheel device and the output shaft;a shifting unit adapted to shift the freewheel device;a differential;an inner shaft which is connectable to the output shaft and to the differential via a connecting means, the inner shaft being displaceable in an axial direction of the output shaft; andan actuator, which interacts with the shifting unit and is adapted to initiate shifting of the freewheel device having a first mechanism adapted to displace the inner shaft in the axial direction to disconnect the inner shaft from the differential, and a second mechanism adapted to drive the shifting unit, the second mechanism being coupled to the first mechanism and being driven after the first mechanism. 2. The crank-CVT transmission as claimed in claim 1, wherein the first mechanism has a drive. 3. The crank-CVT transmission as claimed in claim 2, wherein the drive is a worm drive. 4. The crank-CVT transmission as claimed in claim 1, wherein the first mechanism has a first hollow gear, a first planetary gear set and a first sun gear. 5. The crank-CVT transmission as claimed in claim 4, Wherein the first mechanism has a ramp mechanism, and the ramp mechanism has a ramp planetary gear set, a first ramp which is permanently connected to the inner shaft, a second ramp which is permanently arranged in a ramp housing, and at least one ramp body, which is arranged between the first ramp and the second ramp. 6. The crank-CVT transmission as claimed in claim 5, wherein the first mechanism has a compression spring, which is adapted and arranged to compress the first ramp and the second ramp. 7. The crank-CVT transmission as claimed in claim 5, wherein the first mechanism has a bow spring which is arranged between the first sun gear and the ramp mechanism. 8. The crank-CVT transmission as claimed in claim 5, wherein the second mechanism has a second hollow gear, a second planetary gear set and a second sun gear. 9. The crank-CVT transmission as claimed in claim 8, wherein the second mechanism has a third hollow gear, a third planetary gear set and a third sun gear. 10. The crank-CVT transmission as claimed in claim 9, wherein the first sun gear and the third sun gear are mounted rotatably, and the second sun gear is permanently connected to the ramp housing. 11. The crank-CVT transmission as claimed in claim 9, wherein the first planetary gear set, the second planetary gear set and the third planetary gear set have a common planetary gear carrier. 12. The crank-CVT transmission as claimed in claim 9, wherein the third hollow gear has at least one indent connection adapted to permanently connect the second hollow gear to the third hollow gear. 13. The crank-CVT transmission as claimed in claim 8, wherein the second hollow gear has, on a surface assigned to the first hollow gear, at least one arcuate groove in which a pin, which is permanently connected to the first hollow gear, is arranged. 14. The crank-CVT transmission as claimed in claim 13, wherein the second hollow gear has, on a surface assigned to the first hollow gear, three grooves, and in each of the grooves a pin, which is permanently connected to the first hollow gear, is arranged. 15. The crank-CVT transmission as claimed in claim 1, wherein the shifting unit is a spindle, which is displaceable in the axial direction of the output shaft. 16. The crank-CVT transmission as claimed in claim 1 wherein the freewheel device optionally blocks a relative rotation in a first direction of relative rotation between the freewheel device and the output shaft, or in a second direction of relative rotation between the freewheel device and the output shaft, permitting a relative rotation between the freewheel device and the output shaft in another direction of relative rotation.