Patent ID: 7568868

Claim:
A device for connecting a support element to an add-on piece, said support element including an aperture, said device comprising: a generally U-shaped plug-in element adapted to be inserted into said aperture, said plug-in element having two parallel legs, a connecting region connecting said two parallel legs, and two laterally projecting bearing sections disposed away from and generally parallel to said connecting region, said connecting region having an abutment region; an inner element disposed between said two legs, said inner element having two edge webs disposed substantially parallel to said two parallel legs, each said edge web having a counter lug disposed outwardly of and at an angle to said associated edge web and directed toward a bearing section, said inner element movable with respect to said plug-in element in a direction parallel to said parallel legs, said inner element having a face plate spaced from and parallel to said connecting region, said face plate having a threaded region therein; and a fastener threadedly disposed in said threaded region, said fastener having an end adapted to contact said abutment region, whereby, when a said add-on piece and a said support piece are assembled and said fastener is threaded into said threaded region, said fastener end engages said abutment region and causes said inner element to move in a direction parallel to said parallel legs and away from said plug-in element until said counter lugs bear against the said support element, thereby securing said support element to said add-on piece.