Electrical connector comprising a mat seal and a ramp system for compressing the mat seal

1. An electrical connector comprising:

an insulative housing having:

a front face for being mated with a counterpart electrical connector, and

a rear face for inserting cable terminals,

a plurality of terminal accommodating chambers, which each open on the rear face for inserting of a respective cable terminal, and open on the front face so that the respective cable terminal accommodated in the accommodating chamber can be connected to a counterpart terminal of the counterpart connector,

a mat seal against the rear face, and having a plurality of cable passages facing the accommodating chambers,

a rear grid disposed against the mat seal, the rear grid comprising a main section having a plurality of cable passages facing the cable passages of the mat seal, and at least one chamfered flange extending rearward away from the main section,

a mobile part,

a guide rail fixed to the housing, the guide rail being transverse to the front-rear direction (XX′), for transversally guiding the mobile part,

a ramp system such that, when the mobile part is guided by the guide rail, the ramp system pushes the rear grid against the mat seal so as to compress the mat seal,

the electrical connector being characterized in that the ramp system is formed by the at least one chamfered flange that rises rearward with respect to the main section of rear grid and that is fixed to the rear grid.

2. The electrical connector according to claim 1 , wherein the mobile part is a rear cap covering the rear grid.

3. The electrical connector according to claim 1 , comprising a stop for maintaining the rear grid in a pre-locking position against the mat seal.

4. The electrical connector according to claim 3 , wherein the rear grid, in the pre-locking position, does not compress the mat seal.

5. The electrical connector according to claim 3 , wherein the rear grid comprises a peripheral latch, and the stop is formed by a recess for receiving the latch, the recess being provided in a the rear skirt extending rearward with respect to the rear face.

6. The electrical connector according to claim 1 , wherein a clearance is provided between the mat seal and a rear skirt extending rearward with respect to the rear face, when the mat seal is not compressed by the rear grid.

7. An electrical connector comprising:

a housing having a plurality of terminal accommodating chambers, and at least one guide rail;

a mat seal located on the housing and having a plurality of first cable passages facing the terminal accommodating chambers;

a rear grid located against the mat seal, the rear grid comprising a main section having a plurality of second cable passages facing the first cable passages of the mat seal, and at least one flange extending rearward away from the main section, a rearward facing surface of the at least one flange being spaced from the main section of the rear grid and forming a first ramp surface; and

a rear cap adapted to be slid on the at least one guide rail to connect to the housing, the rear cap having a second ramp surface,

wherein, when the rear cap is moved on the housing towards an assembled position and guided by the at least one guide rail on the housing, the second ramp surface is configured to contact the first ramp surface and push the at least one flange forward into the housing and thereby push the rear grid against the mat seal to compress the mat seal between the housing and the rear grid.

8. The electrical connector as in claim 7 wherein the housing has a latch recess and the rear grid has a latch slidably located in the latch recess between a first pre-latched position and a second latched position.

9. The electrical connector as in claim 7 wherein the at least one flange comprises two flanges located on opposite sides of a rear end of the main section and extending away from the rear end in a general cantilever fashion.

10. The electrical connector as in claim 7 wherein the first ramp surface is chamfered at opposite ends.

11. The electrical connector according to claim 7 comprising a stop for maintaining the rear grid in a pre-locking position against the mat seal.

12. The electrical connector according to claim 11 wherein the rear grid, in the pre-locking position, does not compress the mat seal.

13. The electrical connector according to claim 11 wherein the rear grid comprises a peripheral latch, and the stop is formed by a recess for receiving the latch, the recess being provided in a rear skirt of the housing.

14. The electrical connector according to claim 13 wherein a clearance is provided between the mat seal and the rear skirt when the mat seal is not compressed by the rear grid.