Plug-and-socket connector with a blocking element

1. A plug-and-socket connector, comprising:

a first housing with first electrical contacts; and

a second housing with second electrical contacts, the first housing having a lever which is rotatably mounted on the first housing, the second housing having a toothed surface on which the lever can be brought into contact with the toothed surface, with the lever acting with the toothed surface upon pivoting the lever from a pre-engagement position into the end position and drawing the first and the second housing together into the end position in which the first and the second contacts are contacted with each other, the lever having a contact surface, the first housing having a blocking surface on a blocking element, in a pre-assembly position of the first and the second housing in which the two housings are partially inserted into one another, the blocking surface being arranged in a path of movement of the contact surface of the lever from the pre-engagement position towards the end position of the lever, so that pivoting of the lever into the end position is blocked, the second housing having a release surface, upon pushing together the two housings from the pre-assembly position into an assembly position the release surface moving the blocking element with the blocking surface out of the path of movement of the contact surface, so that the lever can be moved from the pre-engagement position into the end position in order to assemble the two housings into the assembly position.

2. The plug-and-socket connector according to claim 1 , the blocking element being designed as a flexible tongue which is arranged laterally on a housing wall of the first housing.

3. The plug-and-socket connector according to claim 1 , the blocking element having a second actuating surface arranged at least partially at a right-angle to the blocking surface, and the second actuating surface is associated with the release surface for actuating the blocking element.

4. The plug-and-socket connector according to claim 3 , the second actuating surface being arranged in the direction of movement of the release surface inclined with increasing coverage to the release surface along the direction of movement of the second housing from the pre-assembly position into the assembly position.

5. The plug-and-socket connector according to claim 1 , the contact surface being formed in a cut-out in the lever.

6. The plug-and-socket connector according to claim 1 , the lever being rotatably mounted on the first housing in a bearing, with the lever having an at least partially ring-shaped actuating section in the region of the bearing, with a first cut-out being provided on the actuating section, on which cut-out the contact surface is formed.

7. The plug-and-socket connector according to claim 6 , the actuating surface being formed on the actuating section, which surface is provided rotatably about the bearing for acting on the toothed surface of the second housing and for drawing the two housings together.

8. The plug-and-socket connector according to claim 6 , with a second cut-out being provided on the actuating section, into which at least one of the first cut-out and the second cut-out the blocking surface of the blocking element at least partially projects in the end position of the two housings.

9. The plug-and-socket connector according to claim 1 , the release surface being formed on an inner side of the second housing.

10. The plug-and-socket connector according to claim 9 , the release surface being formed as a surface arranged inclined in the direction of insertion of the two housings.

11. The plug-and-socket connector according to claim 9 , the second housing, at least on the inner side, having at least one cut-out into which the blocking element at least partially projects in the end position of the two housings.

12. A first housing of a plug-and-socket connector, comprising:

first electrical contacts, the first housing having a lever which is rotatably mounted on the first housing, the lever with an actuating surface being able to be brought into contact on a toothed surface of a second housing, the lever being designed to act with the toothed surface upon pivoting from a pre-engagement position into an end position and to draw the first and the second housing together into an assembly position, the lever having a contact surface, the first housing having a blocking surface on a blocking element, the blocking surface being arranged in a path of movement of the contact surface of the lever from the pre-engagement position towards the end position of the lever, so that pivoting of the lever into the end position is blocked, the blocking element being designed to be movable, so that the blocking element with the blocking surface can be moved out of the path of movement of the contact surface by insertion of the second housing, so that the lever can be moved from the pre-engagement position into the end position.