| 摘要 |
<p>The device (1) has elements (2, 3) comprising walls (5, 6) placed in contact against each other in a reference plane. One of the walls includes an anti-return strip (8) swinging between a maximum stress position corresponding to a zero angle with respect to the line and a rest position, so that the strip is in contact and supported with an interior surface (11) of opening (10), a body (16) of third element (4) is in contact and supported with a handling unit (15) of one of the elements, and an elastic strip (17) of the body is in contact and supported with embossing (9) of another element.</p> |
