| 摘要 |
PROBLEM TO BE SOLVED: To provide such a negative plate that insulation materials can be attached to both side edges of the negative plate so as not to form a gap between the bottom end of the insulation material and the negative plate without the use of a special apparatus, a filler and the like. SOLUTION: The negative plate 11 has cut out portions at the bottom ends of the both side edges, and fits and holds the insulation materials 12 into and at the both side edge parts. Each cut out portion provided at the bottom ends of the both side edges of the negative plate 11 comprises a horizontally cut out side which reaches the side edge of the negative plate 11 and an obliquely cut out side which reaches the bottom edge of the negative plate 11. In addition, a fitting groove 12a of the insulation material 12 has portions which abut on at least a horizontally cut out side and an obliquely cut out side of the cut out portions of the negative plate 11 so as to oppose the sides. COPYRIGHT: (C)2011,JPO&INPIT |
