| 摘要 |
A holder 1 is provided with two first engaging frame parts 2 and 3 and one second engaging frame part 4. The second engaging frame part 4 includes a pair of supporting parts 41, an elastic beam part 42, and an operating piece 44. The elastic beam part 42 is bendable outward and twistable. A width of the opening of the second engaging frame part 4 is shorter than the sum of a thickness of a flange 61 and a thickness of an edge frame member 62. When the elastic beam part 42 is twisted, the opening width of the second engaging frame part 4 is increased, and the elastic beam part 42 comes in engagement with the rear surface of the flange 61.
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