| 摘要 |
An element (1) for the ventilation of a housing containing an electrical, electronic, mechanical, electromechanical or similar device such as a headlamp of a motor vehicle, comprising a rigid body (2) having an outer cylindrical wall (3), closed off at a first extremity (4) by a closing part (5), said cylindrical wall (3) being open at a second extremity (7) attached to the housing, the body (2) comprising an inner member (15) of an at least partly yielding material having a first extremity (14) close to the closing part (5) of the rigid body (2) and bearing a filtering membrane (25), and a second open extremity (17) facing said housing; between the filtering membrane (25) or the first extremity (14) of said inner member (15) and the closing part (5) of the rigid body (2) there is a distance (D) of between 1 and 4 mm, means (50; 60, 22) for securing insertion of said inner member (15) within aforesaid rigid body (2) being provided so as to allow said distance (D) to be automatically maintained at the time of said insertion. |
