| 摘要 |
The subject of the invention is various modifications of the extendible support device according to the main patent, for the purpose of avoiding, by virtue of a tightening up (13) in the connection segment (12), the guide finger (6) of the cam (3) coming out involuntarily, of trapping the guide finger (6) between the male element (1) and the female element (2) of the device, and of facilitating, by virtue of a shoulder (20), the positioning thereof during assembly, of providing greater stability for the device produced by moulding plastic, by limiting the oscillations of the female part (2), by adding increased thicknesses (10) pointing radially on the male part, at the lateral points of contact of the two elements (1) and (2) of the device, of facilitating the moulding of the male element (1) by virtue of the arrangement of some segments of the cam (3), one side of which points radially and the other side of which perpendicularly to the diametral reference plane, the conjugate guide finger (6) assuming a conical shape. <IMAGE>
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