| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filter holding frame which can be produced by means of simple working. <P>SOLUTION: A first rail member 103 is configured such that the cross-section in the width direction is formed in a step shape having at least one step part 104 and at the same time, the bended edge part 106 is formed by bending the end part in the width direction of the lowermost step flat plane 105 upward. The second rail member 133 is configured such that the cross-section in the width direction is formed in a step shape along the upper surface of the first rail member 103 and, at the same time, the bended edge part 135 is formed by bending the end part in the width direction of the uppermost step flat plane 134 downward. In the first rail member 103 and the second rail member 133, the bended edge part 106 of the first rail member 103 covers the end part in the width direction of the lowermost step flat plane 136 of the second rail member 133, and the bent edge part 135 of the second rail member 133 covers the end part in the width direction of the uppermost step flat plane 105 of the first rail member 103. <P>COPYRIGHT: (C)2012,JPO&INPIT |
