| 摘要 |
PURPOSE: To easily confirm a lock independent of operation speed by rotating a rotating hooking tool across an operating posture control spring when a single base fluorescent lamp is inserted into a plug receiving body. CONSTITUTION: A plug receiving body 2 is kept at the specified inclined angle by engaging a striking piece 10c of an operating posture control spring 10 with a stopper piece 1b of a base table 1. In this state, a base 5 of a single base fluorescent lamp 4 is inserted into a body 11 of the plug receiving body 2. By this insertion, a striking part 8b of a rotating hooking tool 8 is pushed with an engaging projection 6 of the base 5, the rotating hooking tool 8 is rotated downward. When the rotating hooking tool 8 somewhat rotates and a connecting piece 8c gets over a crooked part 10f of the operating posture control spring 10, the operating posture control spring 10 reverses the energizing direction, and energizes the rotating hooking tool 8 in the hooking direction. A lock sound producing piece 10d locating in the center of the operating posture control spring 10 gets over the connecting piece 8c of the rotating hooking tool 8 to produce lock sound. |
