| 摘要 |
A multifunction concentric plug comprises a large-size concentric plug portion and a small-size concentric plug portion. When the portions are combined, a sleeve of relatively small-size concentric plug portion is arranged in a hollow of a sleeve of the large-size concentric plug portion so that the sleeve of the large-size concentric plug portion is aligned with the sleeve of the small-size concentric plug portion. The tip of the small-size concentric plug portion electrically contacts a core conductor of the large-size concentric plug portion. A combining means is provided in knobs of the large-size and small-size concentric plug portions whereby the large-size and small-size concentric plug portions can be securely combined with each other. |
