| 摘要 |
<p>Quick-connect fitting with safety system for pneumatic tubes comprising a terminal coupling (8), a spring (18), a valve (28), an O-ring (26), a connector body (38), a ring seal (36), an O-ring (6), a snap ring (78), a spring (98), a needle locking mechanism (65, 66), a ball (45, 46) and a lid (58), wherein the lid (58) and the snap ring (78) with apron (78f) form the slide (2), wherein an elastic needle ring (88) having at least one projecting spring (88a, 88a') is in contact with the inner wall (58a) of the lid (58), creating an opening (88g), a cavity (88b, 88b') that constitutes an air gap or nozzle (88q) which guides the ball (45,46) towards the throat (12) of the nozzle (B), a needle guide (65, 66) by means of a four-cornered recess (88c), the depth of which is greater than the diameter of the needle (65, 66).
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