Rotary/push operating device for a human-machine interface

1. A rotary/push operating device for a human-machine interface, in particular for a vehicle component, such as an air conditioning system, comprising

a rotary/push operating element which is adapted to be rotated in a rotary movement about a guide shaft and to be axially moved along the guide shaft,

a roller bearing unit having an outer bearing ring, an inner bearing ring and rolling bodies arranged,

wherein one of the bearing rings is connected in a rotationally fixed manner and an axially fixed manner with the rotary/push operating element and is rotated and depressed therewith,

a rotation sensor for sensing the rotary movement of the rotary/push operating element,

a pressure sensor responding to an axial movement of the rotary/push operating element from a starting position into a depressed position along the guide shaft, and

a return element for automatically moving back the rotary/push operating element from the depressed position into the starting position,

wherein the return element directly or indirectly acts upon the roller bearing unit, and

wherein the other one of the bearing rings is guided with the rotary/push operating element in an axially movable manner along the guide shaft and is secured against rotation at the latter.

2. The rotary/push operating device for a human-machine interface according to claim 1 , further comprising

a rotary arresting unit arranged between the inner bearing ring and the outer bearing ring or between a first component mechanically coupled with the inner bearing ring and a second component mechanically coupled with the outer bearing ring,

wherein the rotary arresting unit includes an arresting template provided with arresting recesses and at least one arresting projection moving into and out of one of the arresting recesses,

wherein the arresting template and the at least one arresting projection are adapted to be moved relative to each other, and

wherein the arresting template and/or the at least one arresting projection is/are adapted to be elastically moved or deformed.

3. The rotary/push operating device according to claim 2 , wherein the return element directly or indirectly acts upon the inner bearing ring of the rolling bearing unit.

4. The rotary/push operating device according to claim 2 , wherein the return element comprises a coil spring.

5. The rotary/push operating device according to claim 1 , wherein a plurality of return elements directly or indirectly act upon the rolling bearing unit.

6. The rotary/push operating device according to claim 1 , wherein the rotary/push operating element is of an essential cap-shaped configuration having a front side and a circumferential side and comprising a fixed key body at its front side as well as a ring element adapted to rotate about the key body at its circumferential side, and that the key body is directly or indirectly connected with the inner bearing ring and the ring element is directly or indirectly connected with the outer bearing ring of the rolling bearing unit.

7. The rotary/push operating device according to claim 1 , wherein the rolling bearing unit comprises two rows of rolling bodies axially spaced apart from each other along the guide shaft.

8. The rotary/push operating device according to claim 1 , wherein the at least one arresting projection is configured as a (metal) spring clip.

9. The rotary/push operating device according to claim 1 , wherein the rotary arresting unit is arranged at sides facing each other of the outer bearing and the inner bearing ring or of components mechanically coupled therewith.