Abstract: A strap mount assembly includes a board member, a strap holding portion, and a stopper member. The board member has a first surface and a second surface that is an opposite surface of the first surface and includes a first insertion hole that is through the board member in a thickness direction and through which a first end portion of a strap is inserted to the second surface. The strap holding portion is on the first surface and configured to hold a second end portion of the strap and includes a second insertion hole in which the second end portion is inserted and that opens in a direction along the first surface. The stopper member is coupled to the second end portion and stops at a hole edge of the second insertion hole from an opposite side from the first insertion hole with respect to the second insertion hole.