| 摘要 |
<P>PROBLEM TO BE SOLVED: To keep a fin extending from a first packing into closely contact with a back face of a heat insulating door over the whole length even though a jetty is formed inside a mounting position of the first packing. <P>SOLUTION: The first packing 50 is mounted in the U-shape over a side edge at an oscillation supporting point side and upper and lower both side edges of the back face of the heat insulating door 30, the fin 56 extending inward and capable of being closely kept into contact with the back face of the heat insulating door 30 is disposed on the first packing 50, and a second packing 60 vertically extending is disposed at a side edge at an oscillation end side of the heat insulating door 30. A jetty 40 is projected and formed into a U-shape inside the mounting position of the first packing 50, and tips 41 of upper and lower sides 40A of the jetty 40 have inclined faces gradually inclined to the inside toward tip edges, at their outer faces 42. The fin 56 is continuously closely kept into contact with outer faces 42 of the tips 41 in a state that its inclination is gradually moderated, and it is approximately laid at positions over the tip edges to be closely kept into contact with the back face of the heat insulating door 30. <P>COPYRIGHT: (C)2012,JPO&INPIT |
