| 摘要 |
PROBLEM TO BE SOLVED: To provide a mechanism for achieving low cost in production cost by reducing assembly man-hour, and for achieving improvement of designability of appearance.SOLUTION: At an upper side cover 108, a plurality of engaging parts 119 are arranged along an abutting part 126a, inside ribs 121 are arranged inside the engaging parts 119, and hook parts 120 are arranged between the engaging parts 119 adjacent to each other. The inside ribs 121 are arranged inside the engaging parts 119 at a certain distance, and provided protruding downward further than the abutting part 126a, and also, connected to the engaging parts 119 by connection ribs 122 provided on both sides of the hook part 120. At a right side cover 109, a plurality of parts 124 to be engaged are arranged along an abutting part 126b correspondingly to the engaging parts 119, and also, parts 125 to be hooked are arranged between the parts 124 to be engaged adjacent to each other correspondingly to the hook parts 120. The parts 124 to be engaged can be engaged with the engaging parts 119, and the parts 125 to be hooked can be hooked with the hook parts 120. |
