| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the assembly structure of an inverter of standard specification and waterproof specification such that the design of appearance is unified and the assembly components are used commonly. <P>SOLUTION: In the inverter, a panel fixing case (mold resin case) 5 is disposed in a unit case and an operating panel 4 is attached to the recess 5a of the case, a bearing surface 5b for fixing a waterproof packing 6 is formed at the fringe of the panel fixing case 5, and through holes 6c of screw for fastening the fringe of the window hole in a front cover to the waterproof packing are formed at a plurality of positions of the bearing surface, and nut holding portions for inserting hexagonal nuts are formed on the backside of the case in correspondence with the screw through holes. In case of waterproof specification, a waterproof packing 6 and a nut are set on the panel fixing case 5 and the waterproof packing is fastened with a screw between the front cover applied to the front side of the case and the panel fixing case thus sealing the fringe of the window hole liquid tightly. <P>COPYRIGHT: (C)2008,JPO&INPIT |
