DOOR LATCH, IN PARTICULAR MOTOR VEHICLE DOOR LATCH

Abstract

A door latch and in particular a motor vehicle door latch, which is equipped with a locking mechanism consisting substantially of a catch and a pawl, further having at least one locking mechanism sensor to determine the closing/opening state of the locking mechanism, further having a control unit for evaluating signals of the locking mechanism sensors, and having a trigger sensor for opening the locking mechanism in an electro-motoric manner. According to the invention, a multiple operation of the trigger sensor regardless of the state of the locking mechanism sensor is implemented for opening the locking mechanism.

Claims

1. A door latch comprising: a locking mechanism having a catch and a pawl; at least one locking mechanism sensor to determine a closing/opening state of the locking mechanism; a control unit for evaluating signals of the at least one locking mechanism sensors; and a trigger sensor for opening the locking mechanism in an electro-motoric manner, wherein the control unit is configured to open the locking mechanism after multiple operations of the trigger sensor occur.

2. The door latch according to claim 1, wherein the control unit is configured to determine the multiple operations of the trigger sensor based on a number of operations that is above a predetermined minimum number and/or below a predetermined maximum number.

3. The door latch according to claim 1, wherein the control unit is configured to determine the multiple operations of the trigger sensor based on the multiple operations occurring within a predetermined minimum time window and/or maximum time window.

4. The door latch according to claim 1, wherein the control unit is configured to determine a time-dependent operation number of the trigger sensor.

5. The door latch according to claim 1, wherein the control unit is configured to specify a window for a permissible operation number of the trigger sensor.

6. The door latch according to claim 1, wherein the trigger sensor is provided on a handle.

7. The door latch according to claim 1, wherein the at least one locking mechanism sensor is formed as a catch sensor.

8. The door latch according to claim 1, further comprising an electromotor drive which, directly or indirectly, lifts off the pawl from the catch in dependence on the signals received by the control unit.

9. A method for the operation of a door latch according to claim 1, the method comprising: determining the closing/opening state of the locking mechanism, evaluating the signals of the at least one locking mechanism sensors via the control unit, opening the locking mechanism in the electro-motoric manner when the multiple operations of the trigger sensor occurs.

10. The method according to claim 9 further comprising evaluating the multiple operations of the trigger sensor in a time and/or a number dependent manner via the control unit.

11. The door latch according to claim 5, wherein the control unit is configured to specify the window as being between 1/s and 5/s.

12. The door latch according to claim 6, wherein the handle is an external handle.

13. The door latch according to claim 1, wherein the control unit is configured to ignore a one-time operation of the trigger sensor whereby the locking mechanism is not opened when the at least one locking mechanism sensor determines that the locking mechanism is in an open state.

14. The door latch according to claim 1, wherein the control unit is configured to open the locking mechanism after multiple operations of the trigger sensor occur when the locking mechanism is in an open state and when the locking mechanism is in a closed state.

15. The door latch according to claim 14, wherein the control unit is configured to open the locking mechanism after multiple operations of the trigger sensor occur when the at least one locking mechanism sensor falsely detects that the locking mechanism is in the open state.

16. The door latch according to claim 3, wherein the control unit is configured to determine the multiple operations of the trigger sensor based on the multiple operations occurring within the predetermined minimum time window and the maximum time window that is between one and ten seconds.

17. The door latch according to claim 2, wherein the control unit is configured to determine the multiple operations of the trigger sensor based on the number of operations that is above the predetermined minimum number and below the predetermined maximum number, the predetermined minimum number being two and the predetermined maximum number being ten.

Description

REFERENCE LIST

[0031] 1 Catch

[0032] 2 Pawl

[0033] 1, 2 Locking mechanism

[0034] 3 Locking mechanism sensor/catch sensor

[0035] 4 Control unit

[0036] 5 Drive

[0037] 6 Trigger sensor

[0038] 7 Handle/external handle