Sensor

1. A sensor for triggering a vehicle security device, comprising:

a support element and a housing part which holds the support element, and wherein the housing part consists of a softer material than the support element;

wherein the housing part has a housing rear wall and at least one snap element which permits the housing rear wall to be snapped into a through-opening of a support device; and

wherein the housing rear wall of the housing part has an annular stop portion which, when the housing rear wall is mounted on the through-opening of the support device, bears against the side of the support device facing the support element of the sensor.

2. A sensor for triggering a vehicle security device, comprising:

a support element and a housing part which holds the support element, and wherein the housing part consists of a softer material than the support element;

wherein the housing part has a housing rear wall and at least one snap element which permits the housing rear wall to be snapped into a through-opening of a support device; and

wherein the housing rear wall has an internal region which, after the housing rear wall has been mounted on the through-opening of the support device, is located on the side of the support device remote from the support element of the sensor.

3. A sensor for triggering a vehicle security device, comprising:

a support element and a housing part which holds the support element, and wherein the housing part consists of a softer material than the support element;

wherein the housing part has two rail portions which extend in parallel in a configuration so that the support element of the sensor can be inserted between the two rail portions in a direction parallel to the rail portions and wherein the rail portions hold the support element in position.

4. The sensor as claimed in claim 3 , wherein the housing part has a housing rear wall and at least one snap element which permits the housing rear wall to be snapped into a through-opening of a support device.

5. A vehicle security device including sensor that includes a support element and a housing part which holds the support element, and wherein the housing part consists of a softer material than the support element; the vehicle security device comprising:

a support device and a covering element;

wherein the support element of the sensor is arranged between the support device and the covering element;

wherein the support element of the sensor is separated by the housing part of the sensor from the support device and/or the cover;

wherein the support device has a through-opening;

wherein the housing part includes a housing rear wall and at least one snap element which snaps the housing rear wall into the through-opening of the support device;

wherein the housing rear wall of the housing part has an annular stop portion which in the region of the through-opening of the support device bears against the side of the support device facing the support element of the sensor ( 10 ) and

wherein the snap element bears against the side of the support device remote from the support element of the sensor and, together with the annular stop portion, produces a positive connection between the housing rear wall of the housing part and the support device.

6. The vehicle security device as claimed in claim 5 , wherein the housing part passes through the plane of the through-opening of the support device and has an internal region which is located on the side of the support device remote from the support element ( 40 ) of the sensor, and the internal region of the housing rear wall and the annular stop portion are connected by a connecting portion passing through the through-opening of the support device.

7. The vehicle security device as claimed in claim 5 , wherein the housing part has two rail portions which extend in parallel, and the support element of the sensor is inserted between the two rail portions which extend in parallel.