Set-up assembly of casing for electric appliances

Claim 1

A set-up assembly of a casing for electric appliances, the casing comprising: a base having a back wall and top and bottom walls continuing to top and bottom ends of the back wall to be substantially U-shaped in cross section with left and right side and front side opened; a front cover having a front wall and top and bottom walls continuing to top and bottom ends of the front wall to be substantially U-shaped in cross section with left and right sides and back side opened; left and right side covers respectively fitted to close each of the opened left and right sides of a unit of the base and front cover combined in edge-to-edge relationship at their top and bottom walls; the base being provided with first interlocking coupling means having mutually interlocking coupled grooves and hooks on both side edges, receiving holes made in one of the top and bottom walls and adjacent to the front end thereof to extend inward from the outer surface of the wall, and mounting seats at both side end parts of the front ends of the top and bottom walls and at positions to be covered by the top and bottom walls of the front cover; the left and right side covers being respectively provided with mounting lugs projecting inward on their inner surfaces at positions corresponding to the mounting seats of the base adjacent to their top and bottom ends, and second interlocking coupling means interlocked to the first interlocking coupling means of the base at an end edge on the back wall; the front cover being provided with inward projected latches engageable in the receiving holes of the base at one of the top and bottom walls which corresponds to the one of the top and bottom walls of the base which has the receiving holes, and clamp holes adjacent to an end part of the other one of the top and bottom walls; and the set-up assembly being attained by interlocking the second interlocking coupling means at the end edges on the back wall side of both side covers with the first interlocking coupling means at the side edges of the base, fastening with screws the mounting lugs of the side covers against the mounting seats of the base to mount both side covers to both opened sides of the base, and mounting the front cover to the base by engaging the latches into the receiving holes of the base and fastening screws through the clamp holes of the front cover to the corresponding mounting seats of the base.