To provide a heat insulating window sash not causing such damage as cracks or splits on a resin connecting material and facilitating the fixing work of the resin connecting material between an inner wall and an outer wall.
This double-structure heat insulating window sash 10 is constituted of a metal inner wall 1, metal outer walls 2, 102 arranged on both sides, and connecting members 31, 104 connecting and fixing the inner wall 1 and one outer wall 2 together and the inner wall 1 and the other outer wall 102 together. A resin connecting material 31 made of a synthetic resin is used for at least one of the connecting members 31, 104. Coupling end sections 311 on both sides of the resin connecting material 31 are coupled with coupling sections 110, 210 provided on the inner wall 1 and the outer wall 2.
| WO/2022/112051 | ACCESS PANEL FRAME |
| JPS5818544 | [Title of the device] Mounting structure of double metal Satsushi |
MARUYAMA ISAO
NAGAI KATSUAKI
YOSHIDA TAKASHI
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