Plug connector arrangement with secondary locking
View Patent ↗The present invention relates to a plug connector arrangement with a plug, having first catch arms arranged parallel to the plug-in direction and a secondary locking, as well as a mating plug with shoulders, behind which catch lugs engage in a final plugged-in position on the first catch arms. The secondary locking is released from a pre-catch position by the mating plug during the plug-in process and, on reaching its final catch position, is held back by the first catch arms until the catch lugs thereof are locked behind the shoulders of the mating plug.
1. A plug connector arrangement comprising:
a plug, having first catch arms arranged parallel to a plug-in direction and a secondary locking, and
a mating plug with shoulders, behind which catch lugs of the first catch arms engage in a final plugged-in position,
characterized in that
the secondary locking is released from a pre-catch position by the mating plug during a plugging-in process and, on reaching a final catch position, is held back by the first catch arms until the catch lugs thereof are locked behind the shoulders of the mating plug,
wherein, around a plug face of the plug, the plug has a skirt, on the front end of which are molded brackets, which, in the final catch position, secure the front ends of second catch arms of the secondary locking, accommodated therein, against radially outwardly acting forces.
2. The plug connector arrangement according to claim 1 , further characterized in that the first catch arms are arranged outside of the skirt and their catch lugs project so far through openings in the skirt into the region in front of the plug face of the plug that, when the mating plug is inserted, they come into contact with it.
3. The plug connector arrangement according to claim 1 , further characterized in that the second catch arms of the secondary locking are arranged outside of the skirt and their catch lugs project so far through openings in the skirt into the region in front of the plug face of the plug that, when the mating plug is inserted, they come into contact with it.
4. The plug connector arrangement according to claim 3 , further characterized in that the mating plug has ramps, on which the catch lugs of the first catch arms and the catch lugs of the second catch arms of the secondary locking slide during the plug-in operation and are moved away from the central lengthwise axis of the plug.
5. The plug connector arrangement according to claim 4 , further characterized in that the ramps end with the shoulders, behind which the catch lugs of the first catch arms are locked in final catch position.
6. The plug connector according to claim 4 , further characterized in that the second catch arms of the secondary locking have catch means on the side facing the skirt for locking of the secondary locking in a pre-catch position, in which they engage in complementary catch means on the outer side of the skirt, and in that, when the mating plug is inserted, the ramps thereof displace the catch lugs of the second catch arms so far from the lengthwise central axis that the catch means, mutually engaged in the pre-catch position, are brought out of engagement, whereby the secondary locking is released from its pre-catch position.
7. The plug connector arrangement according to claim 6 , further characterized in that the first catch arms, prior to attaining their final catch position, block the second catch arms, so that the latter cannot attain their final catch position.
8. The plug connector arrangement according to claim 6 , further characterized in that the free ends of the second catch arms abut against the catch lugs thereof during the plug-in process prior to reaching the final catch position of the first catch arms.
9. The plug connector arrangement according to claim 1 , further characterized in that the first catch arms and the catch lugs thereof consist of bent wire clips.
10. The plug connector arrangement according to claim 9 , further characterized in that the catch lugs of the first catch arms are molded as U-shaped loops that project into the openings of the skirt.
11. The plug connector arrangement according to claim 1 , further characterized in that the skirt has opposite-lying recesses adjacent to the regions in which the first and second catch arms are arranged.
12. The plug connector arrangement according to claim 11 , further characterized in that the plug has a housing made of plastic, to which is adjoined the skirt in a unitary construction and in which a contact carrier block is mounted, the front side of which projects into the space bounded by the skirt, whereby a sealing ring seals the gap between the contact carrier block and the housing.
13. The plug connector arrangement according to claim 12 , further characterized in that the mating plug has a plug-in region, in an essentially cylindrical body, the cylinder axis of which is oriented at an angle of 90° to the plug axis, with a recess complementary to the contact carrier block of the plug, in which are arranged contacts complementary to the contacts of the plug.
14. The plug connector arrangement according to claim 13 , further characterized in that the front edge of the socket is flat and, in the plugged-in state, presses on the sealing ring in the plug.
15. The plug connector arrangement according to claim 13 , further characterized in that the mating plug has ramps, on which the catch lugs of the first catch arms and the catch lugs of the second catch arms of the secondary locking slide during the plug-in operation and are moved away from the central lengthwise axis of the plug, and further characterized in that the ramps are formed by means of the cylindrical jacket parts on both sides of the recess of the mating plug.
16. The plug connector arrangement according to claim 13 , further characterized in that, around its plug face, the plug has a skirt, on the front end of which are molded brackets, which, in the final catch position, secure the front ends of the second catch arms of the secondary locking, accommodated therein, against radially outwardly acting forces, and further characterized in that the cylindrical body is bounded over more than three-fourths of its diameter by the skirt and edges of the recesses in the skirt follow essentially the shape of the cylindrical jacket so as to terminate the plug-in region.
17. The plug connector arrangement according to claim 13 , further characterized in that the mating plug region is arranged on the cylindrical body of a diesel injection nozzle.
18. A plug connector arrangement comprising:
a plug comprising first catch arms arranged parallel to a plug-in direction and a secondary locking, wherein the first catch arms comprise catch lugs, and wherein the secondary locking comprises second catch arms, and
a mating plug with shoulders, behind which the catch lugs engage in a final plugged-in position,
wherein the secondary locking is adapted to be released from a pre-catch position by the mating plug during a plugging-in process and, on reaching a final catch position with the mating plug, is adapted to be held back by the first catch arms until the catch lugs are locked behind the shoulders of the mating plug,
wherein, a skirt is provided at a plug face of the plug, wherein a front end of the skirt comprises molded brackets, which, in the final catch position, are adapted to secure the front ends of second catch arms of the secondary locking, accommodated therein, against radially outwardly acting forces.