Audi Q7 - Display Mechanism; Display Versions; Mechanism Components; Functional Principle

54
A new display mechanism is used on the AudiQ7. It allows the
display to be elevated vertically out of the dash panel. Both display
versions have the same mechanism.
The display versions have the following features:
• 7.0“ TFT colour monitor with 800x480pixel resolution
• 8.3“ TFT colour monitor with 1024x480pixel resolution
The mechanism itself comprises:
• Display opening/closing motor V301
• Display opening limit switch F330
• Display closing limit switch F331
• Hall-eect sensor for position recognition
• Guide pin
• Lifting arms
• Springs (for backlash compensation and as weight balancing
for support when extending the display)
Display mechanism
Functional principle
When the display extends, the electric motor drives a lifting arm.
The second lifting arm is connected to the first lifting arm by a rack
segment (scissors principle) and thus also moves upwards. The
current position of the display is determined by a Hall-eect
sensor.
The electric motor speeds up after travelling a certain distance and
slows down again before reaching its end position.
Shortly before reaching the upper end position, the display
opening limit switch F330 emits a signal. The electric motor then
continues turning until the Hall-eect sensor no longer detects
that the motor is running. The electric motor is then deactivated.
This "run-on" feature ensures that the display is moved firmly into
its end postion in order to avoid rattling noise.
The display retracts in the same way, with the electric motor
turning in the reverse direction.
Activation mechanism
The motor and both limit switches are activated by the multimedia
system operating unit E380 and their signals are read out. The
control unit transfers this data to the information electronics
control unit 1 J794. J794 evaluates the data and transmits the
appropriate control commands.
Hall sensor
< Back
Forwards >
Ξ Contents