Patent ID: 8297871

Claim:
A plug-in connector for hollow sections of spacer frames for insulating glass panes, the plug-in connector comprising: a connector part comprising: an essentially U-shaped or box-shaped cross section with side walls and at least one middle wall; and a center stop comprising a plurality of elastic stop elements at a connection point at the edge area of the side walls, wherein the center stop has two separate stop elements directed opposite each other, said two separate stop elements being arranged on both sides of the connection point with only one of said stop elements at one of said side walls and with only one of said stop elements at another of said side walls and with said stop elements each being essentially elastic in the plane of said one of said side walls and said another of said side walls, respectively, to elastically move transversely to a lengthwise extension with respect to the adjacent side wall wherein each of the stop elements has a head part which is wedge-shaped and widens towards the connection point and the head part has a constriction on a rear side, wherein each of the stop elements has an elastic stop inner edge angled toward an outer side of the associated wall, from a stop end toward the constriction, and with an elastic stop outer edge angled away from the outer side of the associated wall, from the stop end toward the constriction.