| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the detachment of a cover that may arise from the deformation of the casing. <P>SOLUTION: A pair of control pieces 35, which are extended roughly at right angles from the side edges of the cover 30 along the outside surfaces of side plates 13a, 13b, is formed on the cover 30. Control walls 20 overlapping the outside surfaces of the control pieces 35 are formed on the outside surfaces of the side plates 13a, 13b. The inclination attitude of the side plates 13a, 13b and the control pieces 35 becomes reverse to each other, when the side plates 13a, 13b and the control pieces 35 are both displaced outside. Here, the control pieces 35 are sandwiched between the side plates 13a, 13b and the control walls 20, so that the movement of the side plates 13a, 13b and the control pieces 35 are restricted in such a way as to maintain roughly parallel attitude to each other. As a result, the opening-enlarging deformation of the casing 10 is controlled, thereby prevent the detachment of the cover 30 that may arise from the opening-enlarging deformation of the casing 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
