| 摘要 |
<p>A hermetic quick coupling for safety valves for tires, including, at the end of the pump body, a tubular chamber (9) that is connected to the compression cylinder (6) of the pump through a central radial hole (10); a bush (11) is hermetically and slidingly fitted inside the tubular chamber (9) and is frontally provided with a rigidly coupled end of a bell-shaped element (19) that forms a seat for a sealing rubber fitting (20) together with the bush (11), the other end of the bell-shaped element (19) being flexible; when the valve (2) is manually pushed against the bush (11) towards the inside of the chamber (9), the bell-shaped element (19) is adapted to interfere with the opening of the chamber (9), clamp the safety valve (2), and tighten the rubber fitting (20) perimetrically on the end of the valve (2); the bush (11) is hermetically crossed, at the rear, by a stem (25) that is rigidly coupled to the bottom (24) of the chamber (9) and is adapted to actuate the shutter of the valve (2) when the safety valve (2), clamped by the bell-shaped element (19), enters. <MATH></p> |
