| 摘要 |
PROBLEM TO BE SOLVED: To eliminate welding, for fixing brackets not to be exposed to outside surface in an assembled state, to reduce the weight of each member, and to mass-produce limited kinds of members. SOLUTION: This box is provided with a frame 1, structured with members formed by bending, doors 6, side plates 8 and a base 9. The frame 1 is made up of a ceiling plate 2, a bottom plate 3, pillars 4, corner connecting plates, a top/bottom separator 5, an intermediate connecting plate, and instrument mounting plates 12. Connected parts of each member, positioned so as not to be exposed, are fixed with fixing brackets. The doors are arranged on the front and rear surfaces of the frame 1, and the other side of each door is mounted in such a way as to be rotatable freely to the mounting parts 103 of either one of the two pillars 4 facing each other on the front and rear surfaces of the frame 1. This structure brings about the action and effect of improving the strength of the casing, safety against an accident by electric shock and assembling work, the economy of manufacturing the constituent members of the casing, and easiness in response to the demand for any change. |
