Positioning system for head-up display

1. A positioning system for a head-up display, which comprises:

a combiner carrier, being moved between a first position and a second position;

a combiner, rotatably disposed on the combiner carrier and a tilt angle of the combiner being adjusted, wherein the combiner is rotated relative to the combiner carrier when adjusting the tilt angle of the combiner; and

a driving mechanism for alternatively driving the movement of the combiner carrier and the tilt angle adjustment of the combiner,

wherein the driving mechanism comprises a guiding plate having a guiding pin; and a guiding slot for accommodating the guiding pin and having a straight slot and a curve slot;

wherein, when the guiding pin moves in the straight slot, the driving mechanism drives the movement of the combiner carrier;

wherein, when the guiding pin moves in the curve slot, the driving mechanism drives the tilt angle adjustment of the combiner, and the movement of the combiner carrier is stopped.

2. The positioning system for the head-up display according to claim 1 further comprising a spindle rotatably disposed on the combiner carrier; and a driving gear disposed on the spindle, wherein the guiding plate is disposed on the spindle,

wherein, when the guiding pin is in the straight slot, the spindle and the driving gear are prohibited from rotating, and the driving gear is driven to move linearly to drive the movement of the combiner carrier,

wherein, when the guiding pin is in the curve slot, the spindle and the driving gear are allowed to rotate, the driving gear is driven to rotate to drive the tilt angle adjustment of the combiner.

3. The positioning system for the head-up display according to claim 2 , wherein the driving gear is driven by an endless gear belt.

4. The positioning system for the head-up display according to claim 1 , wherein the driving mechanism further comprises:

a planetary gear train, having a sun gear and a planet gear, wherein the planet gear is engaged with the sun gear; and

a sleeve, connected to the planet gear and having the guiding pin;

wherein, when the guiding pin is in the straight slot, the planet gear is rotated at a fixed position and drives the sun gear to rotate to drive the movement of the combiner carrier,

wherein, wherein the guiding pin is in the curve slot, the planet gear is revolved about the sun gear to drive the tilt angle adjustment of the combiner, and the sun gear is prohibited to rotate.

5. The positioning system for the head-up display according to claim 4 , further comprising a rack having a stopper at its one end; and a gear wheel disposed on the spindle and engaged with the rack; wherein, when the sun gear is driven to rotate, the gear wheel is rotated together and relatively moves on the rack to drive the movement of the combiner carrier.

6. The positioning system for the head-up display according to claim 5 , wherein the guiding pin is in the curve slot, the rotation of the gear wheel is stopped by the stopper, and the sun gear is prohibited to rotate accordingly.

7. A positioning system for a head-up display, which comprises:

a combiner carrier, being moved between a first position and a second position;

a combiner, rotatably disposed on the combiner carrier and a tilt angle of the combiner being adjusted, wherein the combiner is rotated relative to the combiner carrier when adjusting the tilt angle of the combiner;

a spindle, rotatably disposed on the combiner carrier;

a driving gear, disposed on the spindle; and

a driving mechanism, comprising a guiding plate disposed on the spindle and having a guiding pin; and a guiding slot for accommodating the guiding pin and having a straight slot and a curve slot;

wherein, when the guiding pin is in the straight slot, the spindle and the driving gear are prohibited from rotating, and the driving gear is driven to move linearly to drive the movement of the combiner carrier,

wherein, when the guiding pin is in the curve slot, the spindle is allowed to rotate, the spindle and the driving gear are allowed to rotate, and the driving gear is driven to rotate to drive the tilt angle adjustment of the combiner.

8. The positioning system for the head-up display according to claim 7 , wherein the driving gear is driven by an endless gear belt.

9. A positioning system for a head-up display, which comprises:

a combiner carrier, being moved between a first position and a second position;

a combiner, rotatably disposed on the combiner carrier and a tilt angle of the combiner being adjusted, wherein the combiner is rotated relative to the combiner carrier when adjusting the tilt angle of the combiner; and

a driving mechanism, comprising a planetary gear train having a sun gear and a planet gear; a sleeve connected to the planet gear and having a guiding pin; and a guiding slot for accommodating the guiding pin and having a straight slot and a curve slot;

wherein, when the guiding pin is in the straight slot, the planet gear is rotated at a fixed position and drives the sun gear to rotate to drive the movement of the combiner carrier,

wherein, wherein the guiding pin is in the curve slot, the planet gear is revolved about the sun gear to drive the tilt angle adjustment of the combiner, and the sun gear is prohibited to rotate.

10. The positioning system for the head-up display according to claim 9 further comprising a rack having a stopper at its one end; and a gear wheel disposed on the spindle and engaged with the rack; wherein, when the sun gear is driven to rotate, the gear wheel is rotated together and relatively moves on the rack to drive the movement of the combiner carrier.

11. The positioning system for the head-up display according to claim 10 , wherein the guiding pin is in the curve slot, the rotation of the gear wheel is stopped by the stopper, and the sun gear is prohibited to rotate accordingly.