| 摘要 |
PROBLEM TO BE SOLVED: To shorten the time for assembling a box and to obtain electrical continuity among member components by fastening the members to be fastened when assembled. SOLUTION: Through holes 26, 28 for electrical continuity are formed on the four corners of an upper frame and a lower frame 12 and through holos 30, 32, etc., for inserting rivets are formed. Through holes 52, 54, 60, 62 for inserting the rivets are formed on both edge parts of a column 14 to be arranged on the four corners of the upper frame and lower frame 12 and through holes 56 58, 64, 66 for continuity are formed. Protrusions 82, 84, etc., which can fit to the passing holes 26, 28, etc., are formed on a corner bracket 16 and through holes 73, 76, etc., are formed. When the upper frame, lower frame 12 and column 14 are assembled via the corner bracket 16, the protrusions 82, 84, 94, 96, 98 100 are fitted into the through holes 26, 28, 56, 58, 64, 66 to align the positions, The rivets 46 are inserted for fastening to make each protrusion fit into each through hole and deformation subsequently caused by the fits makes a coating film detected from the surface of each member. |
