| 摘要 |
A waterproof joint of an N-type aerial, comprising a male joint (1), a female joint (2), a first waterproof ring (3), a second waterproof ring (4), a third waterproof ring (5), a first waterproof cover (6), a second waterproof cover (7) and a hollow waterproof sleeve (8); the male joint (1) comprises a sleeve pipe (11); the waterproof sleeve (8) is sleeved at the joint position of the male and female joints (1, 2); the first and second waterproof covers (6, 7) are respectively installed at two ends of the waterproof sleeve (8); the first waterproof ring (3) is sleeved on the male joint (1), and adhered at the outer side of the first waterproof cover (6); the second waterproof ring (4) is located in the first waterproof cover (6), sleeved on the male joint (1), and embedded between the male joint (1) and the inner wall of the first waterproof cover (6); and the third waterproof ring (5) is located in the second waterproof cover (7), sleeved on a cable, and embedded between the cable and the inner wall of the second waterproof cover (7). The structure effectively prevents aqueous vapor from entering an aerial joint, and avoids the degradation or failure of aerial performance caused by a water droplet; in addition, cables with various wire diameters can be used by changing the third waterproof ring (5), thus enlarging the scope of application of a product. |
