US Patent 7101131 Attachment system

An attachment system for securing a rod member in a mounting opening of a constructional component (44; 74; 97) includes a receiving sleeve (5; 37; 64; 73; 93) for receiving the rod member (23; 40), and an actuation member (4; 35; 62; 72; 81; 92) connected with the receiving sleeve (5; 37; 64; 73; 93) for substantially radially displacing the engagement elements (24.1; 24.2; 49.1; 49.1; 69.1; 69.2; 98.1; 98.2) of the receiving sleeve, which engage the rod member, from a first position in which the rod member is received in the receiving sleeve (5; 37; 64; 73; 93) to a second position in which the rod member is locked in the receiving sleeve.