CONTROL MECHANISM FOR HYDROSTATIC TRANSMISSION
First Claim
1. A control mechanism for controlling a displacement of a hydrostatic transmission, comprising:
- a rotary member for controlling the displacement of the hydrostatic transmission, the rotary member being pivoted outside of a casing incorporating the hydrostatic transmission;
a servo unit including a telescopically movable actuator and a valve controlling the telescopic movement of the actuator, the actuator being interlockingly connected to the rotary member; and
a first pivot via which the servo unit is pivotally supported on the casing,wherein the servo unit rotates centered on the first pivot as the rotary member rotates according to the telescopic movement of the actuator hydraulically controlled by the valve.
1 Assignment
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Accused Products
Abstract
An HST control mechanism includes a rotary member, a servo unit, a telescopic member, and a biasing device. The rotary member for controlling a displacement of a hydrostatic transmission (HST) is pivoted outside of a casing incorporating the HST. The servo unit includes a telescopically movable actuator and a valve controlling the telescopic movement of the actuator. The actuator is interlockingly connected to the rotary member. The servo unit is pivotally supported on the casing via a first pivot. The servo unit rotates centered on the first pivot as the rotary member rotates according to the telescopic movement of the actuator hydraulically controlled by the valve. The telescopic member is pivotally supported on the casing via a second pivot. The telescopic member is provided with the biasing device that biases the telescopic member and the rotary member toward a position corresponding to a neutral state of the HST.
17 Citations
4 Claims
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1. A control mechanism for controlling a displacement of a hydrostatic transmission, comprising:
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a rotary member for controlling the displacement of the hydrostatic transmission, the rotary member being pivoted outside of a casing incorporating the hydrostatic transmission; a servo unit including a telescopically movable actuator and a valve controlling the telescopic movement of the actuator, the actuator being interlockingly connected to the rotary member; and a first pivot via which the servo unit is pivotally supported on the casing, wherein the servo unit rotates centered on the first pivot as the rotary member rotates according to the telescopic movement of the actuator hydraulically controlled by the valve. - View Dependent Claims (2, 3, 4)
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Specification