Waterproof captive screw
The utility model provides a waterproof captive screw. The waterproof captive screw comprises a screw body, a mounting sleeve, an elastic piece and a first sealing piece, wherein the screw body comprises a nut and a screw rod, the screw rod comprises a rod body part and a thread part, the rod body p...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model provides a waterproof captive screw. The waterproof captive screw comprises a screw body, a mounting sleeve, an elastic piece and a first sealing piece, wherein the screw body comprises a nut and a screw rod, the screw rod comprises a rod body part and a thread part, the rod body part is connected with the nut, and the thread part is connected with the end, away from the nut, of the rod body part; the mounting sleeve is provided with a threaded hole into which the screw rod is inserted; the elastic piece is arranged on the portion, between the mounting sleeve and the nut, of the screw in a sleeving mode, and an annular groove used for containing the elastic piece is formed between the nut and the mounting sleeve; and the first sealing piece is arranged between the mounting sleeve and the nut and is used for sealing the screw body and the mounting sleeve. According to the utility model, the first sealing element is extruded when the mounting sleeve and the screw cap are mutually pressed, so t |
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