Motor vehicle lock comprising integrated servo closing function

Abstract

The invention relates to a motor-vehicle lock, in particular a motor-vehicle door lock. In order to provide a reliable assembly and a reliable operation for said lock, the drive housing 6 of the servo closing function 2 is designed to function simultaneously as a Bowden cable bearing 8 and as a receiving chamber or shaft 14 for the micro-switch 15. The drive housing 6 has a robust, compact design and allows the micro-switch 15 to be sited securely in the drive housing 6 always in the same place. This also remains the case as the securing cover 10 is fixed in the drive housing 6 by means of a clip 11.

Claims

1. A motor vehicle door latch comprising: a motor vehicle door latch with a catch, pawl and a closure aid acting on the catch in the form of a drive with an actuator, drive shaft, Bowden cable and a sensor assigned and connected to a drive housing, whereby the catch can be moved out of a pre-ratchet position in a motorized manner via the drive into a main ratchet position until the sensor responds, wherein the sensor is integrated into the drive housing with which a Bowden cable thrust bearing is also connected, and a lid with a clip interlocking with a component in the drive housing and against the shaft, thereby securing the sensor in the drive housing.

2. The motor vehicle latch according to claim 1, characterized in that, wherein the drive housing and the Bowden cable thrust bearing or its covering cap are formed as a single component.

3. The motor vehicle latch according to claim 1, characterized in that, wherein the sensor is arranged in a shaft running parallel to the drive in the compact drive housing.

4. The motor vehicle latch according to claim 1, wherein the sensor is pre-installed on the lid and is configured to be pushable into its drive housing or its shaft.

5. The motor vehicle latch according to claim 1, wherein the sensor is formed as a microswitch.

6. The motor vehicle latch according to claim 1, wherein the lid is clipped on the drive housing.

7. The motor vehicle latch according to claim 1, wherein the lid is connected to the shaft via a seal.

8. The motor vehicle latch according to claim 7, wherein the seal is elastic.

9. The motor vehicle latch according to claim 1, wherein the lid demonstrates an eyelet on the outside.

10. The motor vehicle latch according to claim 1, wherein the rope of the Bowden cable can be fixed to the connecting piece or the Bowden cable thrust bearing via a steel sleeve pressed on the end side or via a cap-shaped component.

Description

(1) Further details and advantages of the invention object result from the following description of the pertaining sketch in which a preferred execution example is depicted with the necessary details and individual components. The following are shown:

(2) FIG. 1 a lateral view of the drive housing with an integrated sensor,

(3) FIG. 2 a partial section of the drive housing with installed sensor,

(4) FIG. 3 the lid with sensor and the clips interlocking in the drive housing and

(5) FIG. 4 the end piece of the Bowden cable or the rope with a steel sleeve applied,

(6) A closure aid 2 consisting of a Bowden cable 3 with a rope 4 and a drive 5 is part of a motor vehicle door latch 1 that is not illustrated in detail here. The drive 5 is housed in a quite stable drive housing 6, which simultaneously also forms the Bowden cable thrust bearing 8. The covering cap 9 of the Bowden cable thrust bearing 8 has outlets for the rope 4 on the end side. Beneath this Bowden cable thrust bearing 8 a component is arranged with a shaft 14 in which the sensor 7 outlined in greater detail further along is housed. When the drive shaft not illustrated here returns, i.e. when the movement of the catch which is also not illustrated into the main ratchet is complete, a switch-off command is made to the motor of the drive 5 via the sensor 7 in order to securely prevent the system from reaching a hard stop as previously mentioned. On the outlet side of this shaft 14 a lid 10 is arranged which is connected to the drive housing 6 or the Bowden cable thrust bearing 8 or the shaft 14 in a manner described further along. In order to be able to verify the secure fit of this lid 10 in a simple, it demonstrates an eyelet 17 on the outside.

(7) FIG. 2 shows an open drive housing 6 or Bowden cable thrust bearing 8 with the subsequent shaft 14 and the clipped lid 10, on which the sensor 7, here in the form of a microswitch 15, is fixed. An effective sealing of the shaft 14 is ensured via a merely illustrated seal 16, whereby tensioning of the elastic seal 16 occurs when the lid 10 with its clip 11 is inserted into the drive housing 6 or into the shaft 14. The clip 11 then interlocks behind a part of the shaft 14, whereby it can only be loosened from this position again by an opening area of the drive housing 6 which is not shown here. The external area of the lid 10 with the eyelet 17 necessary for the end-of-line test is also very clearly recognizable here.

(8) The microswitch 15 pre-installed with the lid 10 during installation possesses a supply cable 12 via which the relevant information can also be forwarded to the drive 5 not shown here. From FIG. 3, it is further apparent how the clip 11 is formed and how it can demonstrate the necessary resilience to interlock behind the relevant component 18 and thus to become tense so that the secure position of the microswitch 15 and at the same time the sealing position of the lid 10 is guaranteed.

(9) Finally, FIG. 4 shows the end area of the rope 4 which can be fixed in the drive housing 6 or in the connecting piece 21 as there is a steel sleeve 19 or also a cap-shaped component 20 on the end side, which is pinched with the rope 4 in such a way that the necessary forces can thus be exerted on the rope 4 of the Bowden cable 3.

(10) All stated characteristics, including those taken from the sketches alone, are viewed as crucial to the invention alone and jointly.