| 摘要 |
<p>A safe socket includes bayonet holder and screw holder. The former comprises two metallic rods, shell, base, the first and the second spring leaf, a soleplate and two springs. Therein, the metallic rod is installed in a vertical sheath, the head of the rod is extended from the vertical sheath, the bar part of the rod is extended downward through the hole on the soleplate, the spring is installed around the rod and lies between the soleplate and the flange of the metallic rod. The later comprises a shell, three contact spring leafs fixed on the lower side of base, an interior threaded liner bushing, and a contact metallic rod and a retractor device that can make both the metallic rod move relative to the third contact spring leaf and the first contact spring leaf move relative to second contact spring leaf at the same time. When the bulb is installed therein, the top of the bulb pushed downward the metallic rod to contact with third contact spring leaf and to form the galvanic circuit, so to bring the lamp into normal operation. When no bulb is installed therein, the lower of the metallic rod is separated from third spring leaf, so to reach safe requirement for non-electriferous.</p> |
