| 摘要 |
PURPOSE:To simplify fixing by providing a projection at a flange of a support frame and by forming, at a flange of a magnetic sealed board, a guide with a larger diameter than the projection and a fixed hole with a smaller diameter than the projection, adjacent to the guide. CONSTITUTION:A cylindrical projection 15 is provided at a flange 5a of a support frame 5, while a hole 16 is formed at a flange 1a of an internal magnetic sealed board 1. The hole 16 comprises a guide hole 16a having a larger diameter than a projection 15 and a slit-like fixed hole 16b not wider than the projection 15, adjacent to the guide hole 16a. And, after both flanges 1a and 5a are connected by having the guide hole 16a inserted into the projection 15, the internal magnetic sealed board 1 is slided to forcibly insert the projection 15 into the fixed hole 16b so as to fix it to the support frame. In this way, both can be easily assembled. |
