| 摘要 |
PROBLEM TO BE SOLVED: To provide a case member fixing structure of easy attachment and detachment without damage in appearance. SOLUTION: A locking projection 18 of generally wedge shape with a locking surface 23 is arranged on a side wall inside surface 17 from a side wall 11 of a bottom case 4 to an insertion part 12. Also, a tang shaped locking piece 19 with a locking cavity in one body with an inner side wall 8 is arranged in an upper case 3. A clearance S1 is maintained in vertical direction between an outer side wall 7 of the upper case 3 and the side wall 11 of the bottom case 4 and a clearance S2 is maintained in vertical direction between the tip of the insertion part 12 of the bottom case 4 and a base part surface arranged on the inner side wall 8 of the upper case 3.
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