| 摘要 |
PROBLEM TO BE SOLVED: To suppress a fraud through a boundary between box components while suppressing the enlargement of a board box. SOLUTION: The board box 92 of a main control device 63 includes a front-side component 101 and a back-side component 102. The front-side component 101 is formed with a hook portion 111 at its circumferential edge and the back-side component 102, at its circumferential edge, is formed with a locking receiving portion 121 one-to-one corresponding to the hook portion 111. The hook portion 111 and the locking receiving portion 121 are in the locked state so as to prevent even enlargement of a boundary between the front-side component 101 and the back-side component 102. In this case, a frame part 112 of the front-side component 101 integrally formed with the hook portion 111 constitutes a part of a circumferential face prescribing an inner space of the board box 92. COPYRIGHT: (C)2009,JPO&INPIT |
