| 摘要 |
A clasp device includes a frame and a button for clasping a sheet material between the frame and the button by women and children without a great force. The button is engaged in an opening of the frame and includes an annular flange having a size greater than the opening of the frame for engaging with the frame and for preventing the button from being disengaged from the frame. The frame has one or more stops engaged with the annular flange of the button for securing the button to the frame and for preventing the button from being disengaged from the frame.
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