Clamping structure for objects e.g. invitation cards, has connection piece whose portion is inserted into opening, where engagement part and portion of connection piece are connected to posterior surface of portion of folding piece
摘要
<p>The structure has an opening (121) formed in a central portion of a folding piece (12). An engagement part (141) is connected with an external edge of a portion of a connection piece (14). The portion of the connection piece is inserted into the opening. A curve part (142) is positioned between the engagement part and a main part of the portion of the connection piece. The engagement part and the portion of the connection piece are connected to a posterior surface of a portion of another folding piece (13).</p>
