Variable speed direct drive transmission
AssigneeCakir Aga Motorlu Tasitlar Sanayi ve Ticaret Ltd. Sti.
InventorCem Cakirogullari
Life of this patent
Estimating the term…
Abstract
A direct drive transmission system suitable for use with scooters, go-carts or motorcycles is disclosed. The transmission system comprises a drive shaft coupled to a motor shaft and a friction element which is guided longitudinally on said drive shaft, rotating with the rotation of the drive shaft. The system further comprises a roll bearing fixedly attached around at least part of the periphery of its inner ring to an end of the friction element and a stopper which is fixedly attached to the outer ring of said roll bearing. The stopper is adapted to affix a wire, which when pulled, moves longitudinally said friction element towards the inner end of the drive shaft so as to allow engagement of said friction element onto a traction surface of the drive wheel.
Claims13
A direct drive transmission system comprising a drive shaft (15) adapted to be coupled via a coupling (25) at its inner end to a motor shaft (12), a friction element (22) which rotates with the rotation of the drive shaft and which can be actuated longitudinally, during rotation, on the primary axis of said drive shaft, characterized in that the system further comprises,
- a roll bearing (20) comprising at least an inner ring (31) and an outer ring (32), said roll bearing being fixedly attached around at least part of the periphery of its inner ring (31) to an end of said friction element (22) and where said inner ring (31) has an inner diameter that is larger than the outer diameter of said drive shaft (15),
- a stopper (21) which is fixedly attached to the outer ring (32) of said roll bearing (20), said stopper being adapted to affix a wire (26), which when pulled, moves longitudinally said friction element (22) towards the inner end of said drive shaft (15) so as to allow engagement of said friction element onto a traction surface (16) of a drive wheel (14).
A direct drive transmission system as set forth in any of the preceding claims wherein said roll bearing (20) is a ball bearing.
A direct drive transmission system as set forth in any of the preceding claims wherein the outer diameter of said roll bearing (20) is smaller than the outer diameter of said friction element (22).
A direct drive transmission system as set forth in any of the preceding claims wherein the friction element (22) is provided with projections and/or recesses machined longitudinally around the periphery of drive shaft either at an acute angle or in parallel formation to the primary axis of said friction element.
A direct drive transmission system as set forth in any of the preceding claims wherein the drive shaft (15) is provided with projections and/or recesses machined longitudinally around the periphery of drive shaft either at an acute angle or in parallel formation to the guiding grooves (24).
A vehicle, particularly a scooter, a go-cart or a motorcycle equipped with the transmission system of any of the preceding claims.
Dependencies are inferred from the claim text.