Continuously variable transmission pedal control system
AssigneeDeere & Company
InventorsKenneth M. Reep, David W. Geiger
Life of this patent
Estimating the term…
Abstract
A continuously variable transmission pedal control system includes a forward pedal connected to a forward pivoting bracket, a reverse pedal connected to a reverse pivoting bracket, a first spring connecting the forward pivoting bracket to a linkage such as a bell crank at a first attachment point, and a second spring connecting the reverse pivoting bracket to the linkage at a second attachment point. The linkage may be connected by a motion control rod to a continuously variable transmission that provides a variable forward traction drive speed based on a position of the forward pedal and a variable reverse traction drive speed based on a position of the reverse pedal.
Claims6
A continuously variable transmission pedal control system, comprising:
- a forward pedal connected to a forward pivoting bracket;
- a reverse pedal connected to a reverse pivoting bracket;
- a first spring connecting the forward pivoting bracket to a first attachment point at a first end of a bell crank connected to a continuously variable transmission and exerting a first spring pulling force urging the bell crank to pivot in a first direction when depressing the forward pedal;
- a motion control rod attached to the bell crank at a motion control rod attachment point of the bell crank and connecting the bell crank to the continuously variable transmission;
- a second spring connecting the reverse pivoting bracket to a second attachment point between the motion control rod attachment point and a pivot axis of the bell crank and exerting a second spring pulling force urging the bell crank to pivot in a second direction when depressing the reverse pedal;
- the pivot axis of the bell crank is perpendicular to a pivot axis of the forward pivoting bracket;
- the continuously variable transmission providing a variable forward traction drive speed if the motion control rod moves in a first direction and a variable reverse traction drive speed if the motion control rod moves in a second direction.
A continuously variable transmission pedal control system, comprising:
- a forward traction drive pedal and a reverse traction drive pedal mounted side by side in a lawn and garden tractor operator station;
- a first coil spring and a second coil spring, the first coil spring connecting the forward traction drive pedal to a first attachment point at a first end of a bell crank that pivots in a first direction in response to a pulling force of the first coil spring, and the second coil spring connecting the reverse traction drive pedal to a second attachment point of the bell crank that pivots in a second direction in response to a pulling force of the second coil spring;
- and
- a motion control rod attached to the bell crank at a motion control rod attachment point at a second end of the bell crank and connecting the bell crank to a control input of a continuously variable transmission that operates in a forward traction drive mode if the bell crank pivots in the first direction and in a reverse traction drive mode if the bell crank pivots in the second direction;
- the second attachment point is between the motion control rod attachment point and a pivot axis of the bell crank;
- the pivot axis of the bell crank is perpendicular to a pivot axis of the forward traction drive pedal.
A continuously variable transmission pedal control system, comprising:
- a bell crank connected by a first spring to a forward pedal and a second spring to a reverse pedal;
- the first spring and the second spring exerting tensile forces on opposite ends of the bell crank to pivot the bell crank in a first direction by force from the first spring and a second direction by force from the second spring;
- the first spring connected to the bell crank at a first attachment point that is at a first of the opposite ends of the bell crank, and the second spring connected to the bell crank at a second attachment point;
- and
- a motion control rod attached to the bell crank at a motion control rod attachment point of the bell crank and connecting the bell crank to a continuously variable transmission connected by a belt to an engine and causing a traction drive wheel to rotate forwardly if the bell crank pivots in the first direction and rearwardly if the bell crank pivots in the second direction;
- the second attachment point is between the motion control rod attachment point and a pivot axis of the bell crank;
- the pivot axis of the bell crank is perpendicular to a pivot axis of the forward pedal.
Dependencies are inferred from the claim text.