| 摘要 |
PROBLEM TO BE SOLVED: To reinforce a glass top plate having a through-hole provided therein because of its weak mechanical strength. SOLUTION: A cooker is reinforced as a whole by holding a top plate 1 with a top plate reception section 2a in the vicinity of a through-hole 4, and providing a sealing packing 9 as a buffer member over a gap, and further providing, for provision of heat insulation effect, a space section 11 between an upper surface of the top plate reception section 2a and a lower surface of the top plate 1 for holding the whole of the top plate from a lower portion of the top plate 1 such that a pan, etc., do not fall down. |
