Plug-in connector, control apparatus and method for producing a control apparatus

1. A plug-in connector for a control apparatus, the plug-in connector comprising:

a support body having a base section;

at least one contact pin extending through said base section of said support body and to be connected electrically and mechanically to a printed circuit board of the control apparatus;

said support body having a trough formed therein by said base section, a groove surrounding said base section in a lateral direction, and a side boundary surrounding said groove in the lateral direction; and

sealing compound filling said trough, said sealing compound extending inside said trough integrally in one piece from said side boundary, through said groove and to said contact pin, and covering said base section at least in certain locations.

2. The plug-in connector according to claim 1 , wherein said sealing compound covers said base section completely.

3. The plug-in connector according to claim 1 , wherein said sealing compound is a hardening liquid seal.

4. A control apparatus, comprising:

a housing and a printed circuit board disposed in an interior of said housing, said housing having an opening for the plug-in connector according to claim 1 to be inserted, wherein the at least one contact pin of the connector is electrically and mechanically connected to said printed circuit board inside said housing;

a first sealing interface in a region of said opening between said housing and said plug-in connector, and a second sealing interface on said base section in a region of said at least one contact pin; and

a seal formed integrally in one piece and sealing said first and second sealing interfaces, said seal extending inside said trough integrally from said groove to said contact pin and covering said base section at least in certain locations.

5. The control apparatus according to claim 4 , wherein said seal covers said base section completely.

6. The control apparatus according to claim 4 , configured as a control apparatus for a motor vehicle.

7. The control apparatus according to claim 4 , wherein said seal in the region of said first and second sealing interfaces is formed from a common material.

8. The control apparatus according to claim 4 , wherein an upper edge of the side boundary is offset relative to a surface of said base section facing said interior of said housing, in a direction of said interior of said housing.

9. The control apparatus according to claim 8 , wherein said upper edge of the side boundary of the plug-in connector is spaced apart from said housing, at least in certain sections thereof.

10. The control apparatus according to claim 4 , wherein said housing is formed with a collar running around said opening and said collar is disposed in said groove.

11. The control apparatus according to claim 4 , wherein said printed circuit board is disposed or formed in said housing such that, in a mounting position above the opening, an access to the plug-in connector which is secured to the housing, is provided for applying a material of said seal to the base section of the plug-in connector.

12. A method for producing a control apparatus according to claim 4 , the method comprising:

providing a semi-finished product including the plug-in connector inserted into the opening in the housing;

orienting the semi-finished product with the plug-in connector arranged underneath the housing in a direction of a force of gravity, resulting in the one or more contact pins of the plug-in connector, with which contact is to be made by a complementary plug from outside the control apparatus, to point downwards;

applying a fluid sealing compound to the base section of the plug-in connector from the interior of the housing and through the opening, to cause the sealing compound to run into and fill an intermediate space formed in the groove between the collar of the housing and the wall of the groove, until a level of the base section is reached.

13. The method according to claim 12 , which comprises continuing the step of applying the fluid sealing compound after the level of the base section has been reached, until the sealing compound extends from the groove via the base section to the contact pin, and with the result that the sealing compound covers the base section in certain locations and surrounds the contact pin laterally.

14. The method according to claim 13 , which comprises applying the fluid sealing compound until the sealing compound covers the base section completely.