Device for the rotationally fixed connection of a shaft to at least one component mounted to rotate on the shaft

A device (1) for connecting, in a rotationally fixed manner, a shaft (2) and at least one component (3) which is rotatably supported on the shaft (2), the device (1) comprising:

• at least one actuating element (6, 15, 16) being supported by the shaft (2) in a rotationally fixed, axially slidable manner;
• the at least one component (3) being axially slidable along the shaft and having first and second frictional surfaces;
• an actor (5), which with an actuating force axially displaces the at least one actuating element (6, 15, 16) such that the at least one actuating element (6, 15, 16) axially biases the at least one component (3), and the at least one actuating element (6, 15, 16) frictionally engages the first frictional surface of the at least one component (3) such that the at least one component (3) and the shaft (2) rotate at essentially an equal speed;
• and
• a holding device for retaining the active frictional connection between the at least one actuating element (6, 15, 16) and the at least one component (3), without the actor (5) providing a further actuating force, such that the at least one component (3) is connected, via the at least one actuating element (6, 15, 16), in a rotationally fixed manner with the shaft (2);
• and
• the actor (5) providing rotary drive movement which is converted into a translational actuation movement by a drive conversion device (10) arranged between the actor (5) and the at least one actuating element (6, 15, 16).

A device (1) for connecting either a first or a second component (3, 14) to a shaft (2) in a rotationally fixed manner, the device (1) comprising:

• at least one component (3, 14) being axially slidably supported by the shaft (2) between an engaged and a disengaged position, the at least one component (3, 14) having first and second frictional surfaces;
• at least one actuating element (6, 15, 16) being supported by the shaft (2) in a rotationally fixed and axially slidable manner;
• an actor (5) which applies an actuating force on the at least one actuating element (6, 15, 16) to axially bias the at least one actuating element (6, 15, 16);
• an abutment being axially fixed to the shaft;
• first and second springs, the first spring axially located between the abutment and the at least one component and the second spring axially located between the at least one component and the at least one actuating element (6, 15, 16), the first and the second springs each applying a force to maintain the at least one component (3, 14) in the disengaged position;
• an actor (5) which applies an actuating force on the at least one actuating element (6, 15, 16) to axially bias, via the second spring, the at least one actuating element (6, 15, 16) toward the at least one component (3, 14) which axially biases the at least one component, toward the abutment, into the engaged position in which the first frictional surface engages the abutment and the second frictional surface engages the at least one component (3, 14) and the at least one component (3, 14) is connected to the shaft in a rotationally fixed manner;
• and
• a holding device for retaining the at least one component (3, 14) in the engaged position, without the actor (5) providing a further actuating force.