Selector device for a change-speed gearbox

A selector device for a change-speed gearbox, comprising:

• a selector shaft being subject to an axial selecting force to actuate gearwheel clutches and being axially and rotatively displaceable to a significant angular position relative to a housing,
• a choosing sleeve being arranged concentrically to the shaft and being rotatably and axially displaceable relative to said shaft and axially fixed relative to the housing,
• a latching device which rotationally fixes the selector shaft in a significant angular position relative to the housing, and
• at least one additional choosing sleeve being arranged concentrically to the shaft and being rotatably and axially displaceable relative to said shaft and axially fixed relative to the housing.

A selector device for a change-speed gearbox, comprising:

• a selector shaft being subject to an axial selecting force to actuate gearwheel clutches,
• a choosing sleeve being arranged concentrically and displaceably in a positively guided manner relative to said shaft and fixedly relative to a housing,
• a latching device by which the selector shaft is arranged in an axially displaceable manner in a significant angular position relative to the housing and in a substantially rotationally fixed manner by a latching force, and
• at least one additional choosing sleeve being arranged concentrically and displaceably in a positively guided manner relative to said shaft and fixedly relative to the housing.

A method of making a selector device for a change-speed gearbox, comprising:

• providing a selector shaft being subject to an axial selecting force to actuate gearwheel clutches,
• arranging a choosing sleeve concentrically and displaceably in a positively guided manner relative to said shaft and fixedly relative to a housing,
• providing a latching device by which the selector shaft is arranged in an axially displaceable manner in a significant angular position relative to the housing and in a substantially rotationally fixed manner by a latching force, and
• arranging at least one additional choosing sleeve concentrically and displaceably in a positively guided manner relative to said shaft and fixedly relative to a housing.

A method of changing gears in a selector device for a change-speed gearbox, including a first and second choosing sleeve being arranged concentrically to a selector shaft and axially fixed and rotationally displaceable relative to a housing, comprising;

• braking the first choosing sleeve by an associated first brake such that the first choosing sleeve is rotationally fixed relative to the housing,
• holding the second choosing sleeve in a reaction free state by disengaging an associated second brake, and
• actuating the selector shaft via a shift actuator which provides an axial selecting force to the selector shaft, whereby a rotary motion corresponding to a differential angle of rotation associated with the first choosing sleeve is imposed on the selector shaft via the braked first choosing sleeve, thereby a selector finger fixed relative to the selector shaft moves into a significant angular position to engage a selector rod and actuate the selector rod into a gear position,
• wherein the second choosing sleeve is rotated relative to the selector shaft by a differential angle of rotation associated with the second choosing sleeve.