Shaft connection for a vehicle

1. A coupling mechanism for a shaft, the coupling mechanism comprising:

a first shaft segment having an end with a bearing coupled thereto;

a second shaft segment, both the first shaft segment and the second shaft segment being rotatable, the bearing being coupled to the second shaft segment, the bearing supporting the end within the second shaft segment;

a coupler for coupling the first shaft segment to the second shaft segment,

wherein the coupler selectively couples or uncouples the first shaft segment with the second shaft segment, the coupler being associated with a pressure chamber which allows axial sliding of the coupler along the first and second shaft segments upon variation of pressure in the chamber, the chamber being formed by an inner wall of the second shaft segment and by a jacket mounted between the first and the second shaft segments; and

an other bearing rotatably coupled to the jacket and to the first shaft segment.

2. The coupling mechanism according to claim 1 , wherein power is transmitted from the first shaft segment to the second shaft segment when the coupler is in a coupled position, and there is no power transmission from the first shaft segment to the second shaft segment when the coupler is in an uncoupled position.

3. The coupling mechanism according to claim 1 , wherein the second shaft segment is hollow.

4. The coupling mechanism according to claim 3 , wherein the first shaft segment is concentric to and mounted within the second shaft segment.

5. The coupling mechanism according to claim 4 , wherein the coupler is cooperatively mounted between the first shaft segment and the second shaft segment.

6. The coupling mechanism according to claim 1 , wherein the second shaft segment comprises a plurality of inner teeth arranged, at least partially, along its inner perimeter, and the first shaft segment comprises a plurality of teeth arranged, at least partially, along its outer perimeter.

7. The coupling mechanism according to claim 6 , wherein the coupler comprises a plurality of inner and outer teeth arranged, at least partially, along its inner and outer perimeter, respectively, cooperating with the plurality of teeth of the first and second shaft segments.

8. The coupling mechanism according to claim 7 , wherein the coupling mechanism further comprises a return for the coupler.

9. The coupling mechanism according to claim 8 , wherein the return is a spring mounted within the second shaft segment and supported on one side by the second shaft segment and on the other side by the chamber.

10. The coupling mechanism according to claim 1 , wherein the jacket is firmly mounted to the second shaft segment.

11. The coupling mechanism according to claim 10 , further comprising a cover mounted in a static manner, the jacket being rotatably coupled to the cover, the cover having a connection to a compressed air line.

12. A vehicle comprising:

a gearbox;

a driveshaft coupled to the gearbox;

an axle connection coupled to the driveshaft, the axle connection including:

a first shaft segment;

a second shaft segment;

a coupler for coupling the first shaft segment to the second shaft segment, wherein the coupler selectively couples or uncouples the first shaft segment with the second shaft segment, wherein the coupler is associated with a pressure chamber which allows axial sliding of the coupler along the first and second shaft segments upon variation of pressure in the chamber, the chamber being formed by an inner wall of the second shaft segment and by a jacket mounted between the first and the second shaft segments; and

a bearing positioned between the jacket and the first shaft segment, the bearing supporting the first shaft segment.

13. The vehicle according to claim 12 , wherein the vehicle is a goods transport vehicle having a 6×4-wheel drive configuration.