| 摘要 |
<p>PURPOSE:To improve the operating easiness and facilitate connections of a grounding lead by removably furnishing a knob which protruds at the surface of the fixture body and rotates a fastening screw at the head of this screw. CONSTITUTION:At the time of connecting a grounding lead, a knob 30 whose recess 31 is fitted on the head 19 of a fastening screw 18 is turned, and the fastening screw 18 is tightened, as a ridge 33 on the knob 30 is detained with a slit 20 formed in the head 19 of the screw 18. By this fit, a nut 17 is stopped turning by the inner wall of a terminal chamber 15 and tightened, and an electric wire threaded from a grounding lead insert hole 22 in a lid member 3 to a grounding lead insert part 23 of a grounding lead connecting terminal piece 16, and further between the nut 17 and the terminal piece 16 in the terminal chamber 15 is tightened and connected. As the detent protruding edge 32 of the knob 30, at this time, is detained with a step 21 at the head 19 of the fastening screw 18, there is no risk of slipping-off, and also the knob 30 covers the head of the fastening screw 18 and the grounding lead connecting part 12.</p> |
