| 摘要 |
PURPOSE:To prevent the door from being disassembled and to make screws invisible without impairing serviceability and reliability of the titled heater by welding a clamp to a door inner plate and fixing the door frame to the clamp by means of a screw for assembling so that means for holding a door outer plate assumes a latch structure on the outer peripheral end surface. CONSTITUTION:A clamp 22 is spot-welded to a door inner plate 21, and clamps a door frame 23 and a screen 25 by means of a screw 24. These parts constitute a choking structure for preventing leakage of radio waves. The door outer plate 28 assumes a latch structure by the door frame 23 and the upper end of the door outer plate 28, and the lower end thereof is fixed by a screw 29. Accordingly, only the screw 29 at the lower end of the door outer plate 28 is visible from the ouside, and other clamping screws are hidden in the inner part of the door. Henmce, average users can hardly find screws. Therefore, it is possible to prevent the door from being disassembled and cleaned up due to stains. Further, such a simple structure that an outer glass plate 32 and a window frame 33 are held between the door frame and the door outer plate, becomes possible, and since they are ultimately fastened by screws, assembly and disassembly of these parts are positively possible. Therefore, problems with respect to the reliability can be all eliminated. |
