OPENING DEVICE FOR A MOTOR VEHICLE DOOR ELEMENT

Abstract

An opening device for a motor vehicle door element, more particularly a side door, comprising an electrically actuatable door lock, an electrical drive unit, a setting means and a control unit, wherein an operating mode can be selected by means of the control unit, and wherein a means for emergency power supply is provided at the opening device.

Claims

1. An opening device for a motor vehicle door element comprising: an electrically-actuatable door lock that holds the vehicle door element in a locking position and releases the vehicle door element to an open position, an electrical drive unit that is actuated for setting the vehicle door element between the locking position and the open position, and a control unit that operates the electric drive unit, wherein an operating mode is selected by the control unit, and an emergency power supply that supplies power at to the control unit for operating the opening device.

2. The opening device according to claim 1, wherein the emergency power supply is configured as an externally-accessible power supply that is connectable to the control unit.

3. The opening device according to claim 1, further comprising an external access for connecting the emergency power supply and a flap, wherein the external access is arranged in a region of the flap for connection of the emergency power supply.

4. The opening device according to claim 1, wherein the emergency power supply is coupled to the opening device by the control unit.

5. The opening device according to claim 1, wherein the emergency power supply is legitimized by the control unit for authorizing the emergency power supply to supply power for operating the opening device.

6. The opening device according to claim 5, wherein the legitimization is carried out in response to a voltage drop.

7. The opening device according to claim 5, wherein the legitimization is carried out by the control unit, the control unit being configured as an external control unit.

8. The opening device according to claim 5, wherein the legitimization is carried out in response to a crash signal.

9. The opening device according to claim 5, wherein the legitimization is carried out in response to activation of a circuit breaker.

10. A method for opening a motor vehicle door element comprising the steps of: sensing a current drop, determining a legitimization decision for an emergency power supply for an opening device according to claim 1 in response to the current drop, and activating the emergency power supply when the legitimization determination results in a legitimization.

11. The opening device according to claim 3, wherein the flap is a fuel filler flap or a charging socket.

12. The opening device according to claim 7, wherein the external control unit is a smartphone, a smart device, a key fob, and/or an NFC card.

13. The method according to claim 10, wherein the legitimization is carried out in response to a crash signal.

14. The method according to claim 10, wherein the legitimization is carried out in response to activation of a circuit breaker.

Description

[0022] In the drawings:

[0023] FIG. 1 shows a basic representation of an opening device with a means for emergency power supply as an integral component of a motor vehicle and in a basic arrangement in a motor vehicle, wherein a side view of a motor vehicle door element in a motor vehicle is shown.

[0024] FIG. 1 shows a side view of a motor vehicle 1 in the region of a side wall 2 and a door element 3. An opening device 4 is shown in a basic form with reference to the position in the door element 3.

[0025] The opening device 4 has an electrically-actuatable door lock 5, a drive unit 6 with a setting means, a control unit 7, and an externally-accessible power supply 8. By means of the door lock 5, the door element 3 can hold the door element 3 in a closed position, in cooperation with a lock holder 9. If, for example, a control signal 11 is then forwarded to the control unit 7 by means of a radio remote control 10, the electrically-actuatable door lock 5 can be unlocked via a control line 12, as a result of which a locking mechanism located in the interior of the door lock 5 releases the lock holder 9. The door element 3—in this case, a side door 3 of a motor vehicle 1—is now held freely pivotable in the motor vehicle 1. The door element 3 can now be transferred to an open position by means of the drive unit 6 and the setting means located in the drive unit 6. For this purpose, the drive unit 6 is controlled, simultaneously with or after the unlocking of the locking mechanism, via a control line 13.

[0026] If a voltage drop now occurs in the motor vehicle 1, this voltage drop can be detected by the control unit 7 of the motor vehicle 1. The externally-accessible power supply, e.g., in the form of a socket, can now be enabled via the control line 14. In this exemplary embodiment, the legitimization of the means for emergency power supply 8 takes place via the voltage drop in the motor vehicle 1. If the voltage drop has been detected and the externally-accessible power supply 8 activated, an external voltage source 15 can be connected, via, for example, a cable connection 16, to the socket 8 of the motor vehicle 1. The external power supply 8 is now able either to supply the control unit 7 with a voltage via the control line 14, so that the door lock 5 and the drive unit 6 can be supplied with a voltage, or to supply a current via the control lines 12, 13, or the power supply 8 itself conducts a corresponding voltage to the door lock 5 or the drive unit 6 via separate control lines 17, 18. The direct control of the door lock 5 and the drive unit 6 via the control lines 17, 18 can take place, for example, when the external voltage source itself has its own control unit, wherein the external voltage source is, for example, a smartphone with appropriate software.

[0027] It is also conceivable according to the invention that a legitimization be carried out, via a crash signal, in the control unit 7. The socket 8, which can be arranged, for example, behind a flap of a charging socket, is then activated, so that a voltage source 15 can supply the opening device 4 with a voltage or a current. However, the legitimization can also take place via a smartphone 10, wherein the smartphone 10 in turn sends a control signal to the control unit 7, so that the control unit 7 enables the external power supply via the socket 8. In any case, it is ensured that, in the event of a voltage drop, the opening device 4 can be activated and operated via the externally-accessible power supply 8.

LIST OF REFERENCE SIGNS

[0028] 1 motor vehicle [0029] 2 side wall [0030] 3 door element [0031] 4 opening device [0032] 5 door lock [0033] 6 drive unit [0034] 7 control unit [0035] 8 externally-accessible power supply, socket [0036] 9 lock holder [0037] 10 radio remote control, smartphone [0038] 11 radio signal [0039] 12, 13, 14, 17, 18 control line [0040] 15 voltage source [0041] 16 cable connection