Toroidal-type continuously variable transmission
First Claim
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1. A toroidal-type continuously variable transmission, comprising:
- an input shaft into which a rotational force is input and including an oil passage formed in a center portion thereof so as to extend along an axial direction thereof;
an input side disk rotating integrally with the input shaft;
an output side disk disposed concentric with and opposed to the input side disk;
a ball spline for supporting the input side disk disposed on the outer peripheral surface of the input shaft, the ball spline including a plurality of ball spline grooves formed in the outer peripheral surface thereof so as to be spaced from one another at a given interval in the peripheral direction thereof; and
a plurality of oil grooves for connecting together the ball spline grooves, wherein the input shaft includes an oil hole for allowing the oil grooves and the oil passage to communicate with each other.
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Abstract
The present toroidal-type continuously variable transmission comprises an oil passage formed in an input shaft so as to extend in the axial direction of the input shaft, a plurality of ball spline grooves formed in the outer peripheral surface of the input shaft so as to be spaced from one another at a given interval in the peripheral direction of the input shaft, a plurality of oil grooves not only for connecting together the ball spline grooves but also for guiding lubricating oil along the outer peripheral surface of the input shaft, and two oil holes 1a formed in the input shaft 1 for allowing the oil grooves and oil passage to communicate with each other.
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Citations
11 Claims
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1. A toroidal-type continuously variable transmission, comprising:
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an input shaft into which a rotational force is input and including an oil passage formed in a center portion thereof so as to extend along an axial direction thereof;
an input side disk rotating integrally with the input shaft;
an output side disk disposed concentric with and opposed to the input side disk;
a ball spline for supporting the input side disk disposed on the outer peripheral surface of the input shaft, the ball spline including a plurality of ball spline grooves formed in the outer peripheral surface thereof so as to be spaced from one another at a given interval in the peripheral direction thereof; and
a plurality of oil grooves for connecting together the ball spline grooves, wherein the input shaft includes an oil hole for allowing the oil grooves and the oil passage to communicate with each other. - View Dependent Claims (2, 3, 4)
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5. A toroidal-type continuously variable transmission, comprising:
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an input shaft into which a rotational force is input;
an input side disk rotating integrally with the input shaft;
an output side disk disposed concentric with and opposed to the input side disk; and
a ball spline for supporting the input side disk disposed on the outer peripheral surface of the input shaft;
wherein the input shaft includes an oil passage formed in a center portion thereof so as to extend along an axial direction thereof, a plurality of ball spline grooves formed in the outer peripheral surface thereof so as to be spaced from one another at a given interval in the peripheral direction thereof, a plurality of oil grooves formed in the outer peripheral surface thereof respectively for connecting together the two mutually adjoining ones of the ball spline grooves, and an oil hole for allowing the oil grooves and the oil passage to communicate with each other. - View Dependent Claims (6, 7, 8)
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9. A toroidal-type continuously variable transmission, comprising:
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an input shaft into which a rotational force is input;
an input side disk rotating integrally with the input shaft;
an output side disk disposed concentric with and opposed to the input side disk; and
a ball spline for supporting the input side disk disposed on the outer peripheral surface of the input shaft;
wherein the input shaft includes an oil passage formed in a center portion thereof so as to extend along an axial direction thereof, and a plurality of ball spline grooves formed in the outer peripheral surface thereof so as to be spaced from one another at a given interval in the peripheral direction thereof;
the input side disk includes a plurality of ball spline grooves formed in the inner peripheral surface thereof and a plurality of oil grooves formed in the inner peripheral surface thereof respectively for connecting together the two mutually adjoining ones of the ball spline grooves; and
the input shaft further includes an oil hole for allowing the oil grooves and the oil passage to communicate with each other. - View Dependent Claims (10, 11)
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Specification