초록 ▼

A speed adjusting mechanism for use in connection with, a hydrostatic transaxle comprising a casing in which is mounted a rotating hydraulic pump in fluid communication with a rotating hydraulic motor, a moveable swash plate cooperable with the rotating pump for controlling the speed and direction o

A speed adjusting mechanism for use in connection with, a hydrostatic transaxle comprising a casing in which is mounted a rotating hydraulic pump in fluid communication with a rotating hydraulic motor, a moveable swash plate cooperable with the rotating pump for controlling the speed and direction of rotation of the hydraulic motor, and a trunnion arm linked to the moveable swash plate for adjusting the orientation of the swash plate. The speed adjusting mechanism includes a return arm adapted to be mounted to the casing in a fixed position indicative of a neutral position of the trunnion arm. A control arm is mounted to the trunnion arm and a pair of scissor return arms are provided which cooperate with the return arm to move the control arm to the neutral position. The control arm is adapted to be mounted to the trunnion arm in any one of a plurality of different positions and the return arm is capable of being mounted to the casing in a corresponding position such that the return arm can be aligned with the control arm to establish the neutral position.

대표청구항 ▼

1. A zero-turn transaxle, comprising:a casing adapted to carry a single axle in one of a left-handed or a right-handed drive position; a hydraulic transmission mounted within the casing comprising a rotatable hydraulic pump in fluid communication with a rotatable hydraulic motor and a moveable swash

1. A zero-turn transaxle, comprising:a casing adapted to carry a single axle in one of a left-handed or a right-handed drive position; a hydraulic transmission mounted within the casing comprising a rotatable hydraulic pump in fluid communication with a rotatable hydraulic motor and a moveable swash plate cooperable with the rotatable hydraulic pump for controlling the speed and direction of rotation of the rotatable hydraulic motor, the rotatable hydraulic motor being used to drive the axle; a rotatable trunnion arm coupled to the moveable swash plate, the rotatable trunnion arm extending from the casing; and a speed adjusting mechanism mounted to the casing and drivingly coupled to the rotatable trunnion arm, the speed adjusting mechanism being used to rotate the rotatable trunnion arm to change the orientation of the swash plate to change the speed and direction of rotation of the rotatable hydraulic motor, the speed adjusting mechanism including a return to neutral mechanism for biasing and moving the rotatable trunnion arm to a neutral position where the swash plate does not influence the speed and direction of rotation of the rotatable hydraulic motor comprised of a return arm that is mounted to the casing in a fixed position indicative of the neutral position, a control arm that is mounted to the rotatable trunnion arm, and a pair of scissor return arms which are adapted to move the control arm in cooperation with the return arm for the purpose of moving the rotatable trunnion arm to the neutral position, wherein the return arm has a plurality of openings for accepting a bolt used to mount the return arm to the casing and the control arm has a plurality of openings adapted to engage the bolt to provide a limit to the degree of movement afforded to the control arm.