| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fraudulent opening prevention mechanism of a board case which is structured so as to permit the trace of the fraudulent opening of a board case to be clearly left. <P>SOLUTION: In the fraudulent opening prevention mechanism, a connection 85 has an outside periphery curved surface 85a bent into a circular arc around a prescribed axis, connected to the side wall portion 57 of a case lid member 50 on the one end side of the axial direction, and connected to a lid side engagement portion 80 on the other end side of the axial direction. The corner portion 86 on the one end side where the outside periphery curved surface 85a of the connection 85 crosses the side wall portion 57 of the case lid member 50 is formed by smoothly connecting the outside periphery curved surface 85a and the side wall portion 57 by denting it into a circular arc. <P>COPYRIGHT: (C)2012,JPO&INPIT |
