ATTACHMENT STRUCTURE FOR SHEET MATERIAL

An attachment structure for a sheet material includes an attachment hole portion that is provided in a sheet material and in which a large-diameter hole and a small-diameter hole communicate with each other through a communication portion, a locking portion provided in a member to be attached corresponding to the attachment hole portion, and configured to lock the attachment hole portion to attach the sheet material to the member to be attached, and a projecting piece that is provided in the communication portion and in which a width of the communication portion is narrower than an inner diameter of the small-diameter hole. The locking portion includes an insertion guide portion having an inclined face formed on a side face of a column portion, and configured to bend the projecting piece in contact with the column portion in a thickness direction of the sheet material.