Discrete-ratio gearbox for motor vehicle
AssigneeC.R.F. Societa Consortile per Azioni
InventorsDario Caenazzo, Gianluigi Pregnolato, Valter Pastorello, Carlo Emilio Baret
Life of this patent
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Abstract
The gearbox comprises a case, a rod mounted on the case, a pair of sliding shift forks mounted on the rod, and travel-limit elements arranged on the rod for defining travel-limit positions for the shift forks. The travel-limit elements comprise a pair of bushes which are separate from the rod and have each a first axially outer larger-diameter portion and a second axially inner smaller-diameter portion so as to define at least one axial abutment surface for the shift fork adjacent thereto.
Claims12
A discrete-ratio gearbox for a motor vehicle, comprising a case, at least one rod mounted on the case, at least one sliding shift fork mounted on the at least one rod, and travel-limit means which are provided on the at least one rod for defining travel-limit positions for the at least one shift fork, wherein the travel-limit means comprise at least one bush separate from the at least one rod,
- wherein the at least one bush is fixedly mounted on a respective end of the at least one rod and comprises an axially inner portion and an axially outer portion which is formed in a single piece with the axially inner portion and has a larger diameter than the axially inner portion.
A discrete-ratio gearbox for a motor vehicle, comprising a case, at least one rod mounted on the case, at least one sliding shift fork mounted on the at least one rod, and travel-limit means which are provided on the at least one rod for defining travel-limit positions for the at least one shift fork,
- wherein the travel-limit means comprise at least one bush separate from the at least one rod,
- wherein the at least one bush is fixedly mounted on a respective end of the at least one rod and comprises an axially inner portion and an axially outer portion having a larger diameter than the axially inner portion,
- wherein the at least one shift fork is slidably mounted on the axially inner portion and wherein the axially outer portion forms an axial abutment surface defining a travel-limit position for the at least one shift fork,
- wherein the gearbox further comprises a left-hand shift fork and a right-hand shift fork which are mounted on a common rod, a left-hand bush, a right-hand bush, and a third travel-limit element interposed between the left-hand and right-hand bushes,
- wherein the axial abutment surface of the left-hand bush defines a travel-limit position for the movement of the left-hand shift fork to the left,
- wherein the axial abutment surface of the right-hand bush defines a travel-limit position for the movement of the right-hand shift fork to the right, and
- wherein the third travel-limit element forms a pair of axial abutment surfaces defining a travel-limit position for the movement of the left-hand shift fork to the right and a travel-limit position for the movement of the right-hand shift fork to the left, respectively.
A discrete-ratio gearbox for a motor vehicle, comprising a case, at least one rod mounted on the case, at least one sliding shift fork mounted on the at least one rod, and travel-limit means which are provided on the at least one rod for defining travel-limit positions for the at least one shift fork,
- wherein the travel-limit means comprise at least one bush separate from the at least one rod,
- wherein the at least one bush is fixedly mounted on a respective end of the at least one rod and comprises an axially inner portion and an axially outer portion having a larger diameter than the axially inner portion,
- wherein the axially inner portion forms a first axial abutment surface defining a travel-limit position for a first shift fork and
- wherein the axially outer portion forms a second axial abutment surface defining a travel-limit position for a second shift fork.
Dependencies are inferred from the claim text.