| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable machine used for an electronic key system, which allows a circuit element to be easily prevented from being modified. <P>SOLUTION: A protective cover 60 includes a tabular plane part 61 and a plurality of engaging projections 62 arranged in the vicinity of the outer edge of the plane part 61. The engaging projection 62 is provided with an engaging claw 62a having a claw-shaped apex, and a protective plate 62b which is arranged apart from the engaging claw 62a, more adjacent to the outer edge of the plane part 61 than the engaging claw 62a, such that the outside ranging from the base portion to the apex of the engaging claw 62a is covered. The engaging claw 62a and the protective plate 62b project from the surface opposite to a circuit board 70 in the plane part 61 toward the circuit board 70. A battery holder 80 is provided with a groove part 85a at a place opposite to the engaging claw 62a of the protective cover 60, with which the apex of the engaging claw 62a engages from the outer edge side of the plane part 61. <P>COPYRIGHT: (C)2013,JPO&INPIT |
