Patent ID: 7168879
Filing Date: 2007-01-30
Classification: F16B,Y10T

Abstract:
1. A plug-in coupling for removably interconnecting a first structural member and a second structural member, comprising: a resiliently deformable female coupling part adapted to be inserted into a socket at said first structural member such that the female coupling part is retained therein, said female coupling part comprising a ball-shaped cup, a conical portion integral with said ball-shaped cup and serving as a guide portion, an intermediate annular wall integral with said conical portion, and a tubular external wall integral with said intermediate annular wall, said tubular external wall surrounding at least a part of the ball-shaped cup in spaced relation thereto, and the tubular external wall engaging a peripheral wall of said socket when said female coupling part has been inserted into said socket, and a male coupling part comprising a ball-shaped head and a fixing portion for securing said male coupling part to said second structural member, said intermediate annular wall of said female coupling part, in an axial cross-section thereof, being of an undulated profile at least in a certain area thereof, wherein said undulated profile comprises a single axially directed annular bulge of said intermediate annular wall, said bulge having internal and external walls and webs extending therebetween for stiffening said bulge in an axial direction.