Housing for connecting to a plug connector part

2:

• The housing of claim 1, wherein the insertion opening has a first opening width at the first wall portion and a second opening width at the second wall portion,
• wherein the second opening width is larger than the first opening width as measured transversely to the insertion direction.

3:

• The housing of claim 2, wherein the wall is substantially cylindrical at the first wall portion and at the second wall portion, and
• wherein the first opening width corresponds to a diameter of the insertion opening at the first wall portion and the second opening width corresponds to a diameter of the insertion opening at the second wall portion.

4:

• The housing of claim 1, wherein the coding protrusion extends in the insertion direction over an entire height of the second wall portion, as measured in the insertion direction.

5:

• The housing of claim 1, wherein the coding apparatus includes at least two coding protrusions that form a coding groove therebetween that extends in the insertion direction.

6:

• The housing of claim 5, wherein the coding groove has a first width, as measured in a circumferential direction about the insertion direction,
• wherein the coding groove adjoins an entry point, when viewed in the insertion direction, and
• wherein the entry point has a second width that is smaller than the first width, as measured in the circumferential direction.

7:

• The housing of claim 6, wherein the entry point is arranged on the first wall portion.

8:

• The housing of claim 1, wherein the coding apparatus includes a plurality of coding grooves which are offset from one another in a circumferential direction about the insertion direction.

9:

• The housing of claim 8, wherein at least two of the coding grooves have different widths as measured in the circumferential direction.

10:

• The housing of claim 1, wherein the second wall portion has a larger opening width than the first wall portion, as measured between coding grooves which are opposite one another within the insertion opening in a direction transverse to the insertion direction.

12:

• The electrical device of claim 11, wherein the shielding plate defines the insertion opening in the insertion direction, and
• wherein the shielding plate includes an engagement opening configured to receive a latch element of the plug connector part in a latching manner.

13:

• The electrical device of claim 11, further comprising:
• a contact pin, which extends in the insertion direction from the shielding plate into the insertion opening, connected to the shielding plate, and
• wherein the contact pin includes an electric contact.

14:

• The device of claim 11, further comprising:
• a printed circuit board arranged at a spacing from the shielding plate when viewed in the insertion direction.

16:

• The apparatus of claim 15, wherein the plug connector part includes an insertion head and a coding rib arranged on the insertion head,
• wherein the coding rib extends in the insertion direction, and
• wherein the coding rib can be brought into engagement with a coding groove on the insertion opening.

17:

• The apparatus of claim 16, wherein an extension length of the coding rib, as measured in the insertion direction, is no larger than a height of the coding groove, as measured in the insertion direction.

18:

• The apparatus of claim 17, wherein the insertion head has a length, as measured in the insertion direction, the length of the insertion head substantially corresponding to the height of the wall of the housing, as measured in the insertion direction,
• wherein the extension length of the coding rib is shorter than the length of the insertion head.