Continuously variable transmission
First Claim
1. A CVT transmission comprising:
- a shaft (1) journalled to a housing (4);
a first sheave (14) fixed to the shaft (1);
a second sheave (12) moveable parallel to an axis of rotation (1A) of the shaft;
the second sheave locked in rotating relation with the first sheave by a first sheave member (22) cooperatively engaged with a second sheave receiving member (12A), the second sheave receiving member comprising a slot disposed at a helical angle (HA) with respect to the axis of rotation;
a sprocket (6) journalled to the housing;
the sprocket threadably engaged (6B) with a movable member (26), a bearing (16) disposed between the movable member and the second sheave;
the movable member engaged (5A) with the housing whereby movement of the movable member is parallel with the axis of rotation;
an actuator (30) engaged with the sprocket; and
the second sheave is axially movable through the helical angle upon a rotation of the sprocket.
4 Assignments
0 Petitions
Accused Products
Abstract
A CVT transmission comprising a shaft journalled to a housing, a first sheave fixed to the shaft, a second sheave moveable parallel to an axis of rotation of the shaft, the second sheave locked in rotating relation with the first sheave by a first sheave member cooperatively engaged with a second sheave receiving member, the second sheave receiving member disposed at a helical angle (HA) with respect to the axis of rotation, a sprocket journalled to the housing, the sprocket threadably engaged with a movable member, a bearing disposed between the movable member and the second sheave, the movable member engaged with the housing whereby movement of the movable member is parallel with the axis of rotation, an electric actuator engaged with the sprocket, and the second sheave is axially movable upon a rotation of the sprocket.
26 Citations
14 Claims
-
1. A CVT transmission comprising:
-
a shaft (1) journalled to a housing (4); a first sheave (14) fixed to the shaft (1); a second sheave (12) moveable parallel to an axis of rotation (1A) of the shaft; the second sheave locked in rotating relation with the first sheave by a first sheave member (22) cooperatively engaged with a second sheave receiving member (12A), the second sheave receiving member comprising a slot disposed at a helical angle (HA) with respect to the axis of rotation; a sprocket (6) journalled to the housing; the sprocket threadably engaged (6B) with a movable member (26), a bearing (16) disposed between the movable member and the second sheave; the movable member engaged (5A) with the housing whereby movement of the movable member is parallel with the axis of rotation; an actuator (30) engaged with the sprocket; and the second sheave is axially movable through the helical angle upon a rotation of the sprocket. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A clutch system for a continuously variable transmission, the clutch system coupled to a shaft that is rotatable about a longitudinal axis, comprising:
-
a stationary sheave coupled to the shaft; a movable sheave comprising a slot having a helical angle with respect to the shaft, and moveably coupled to the shaft, the movable sheave being helically movable with respect to said stationary sheave; a positional motor coupled to the moveable sheave and configured to cause said moveable sheave to move closer or further from the stationary sheave; and the moveable sheave and the stationary sheave coupled via the slot. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A vehicle comprising a continuously variable transmission system, wherein the continuously variable transmission system comprises:
-
a stationary sheave coupled to a shaft; a movable sheave journalled about the shaft, the movable sheave being movable closer to or further from the stationary sheave along a helical longitudinal axis of rotation; a motor coupled to the moveable sheave and configured to cause said moveable sheave closer or further from the stationary sheave; and the stationary sheave and the moveable sheave coupled with a pin and slot, wherein said slot is generally at a helical angle from said longitudinal axis of rotation and said moveable sheave helically moveable with respect to said stationary sheave. - View Dependent Claims (12, 13, 14)
-
Specification