| 摘要 |
A frame includes a first frame member that has a first opening at an end portion thereof; a second frame member that has a second opening at an end portion thereof; a first frame coupling member that comprises a first projection that fits into the first opening and a second projection that fits into the second opening; and a second frame coupling member that couples to the first frame coupling member, wherein: the first frame member and the second frame member are located so as to be sandwiched between the first frame coupling member and the second frame coupling member when the first frame coupling member and the second frame coupling member are coupled to each other. |
