Abstract: The opening and closing mechanism for opening and closing bodies has a first opening and closing body, a second opening and closing body, a first support member, a second support member, a first and second guide member, wherein a first and a second guide member intermediate portion are disposed to have an overlapping region, in the overlapping region, one of the first guide member intermediate portion and the second guide member intermediate portion is arranged, with respect to the other of the first guide member intermediate portion and the second guide member intermediate portion, in a direction to which a load is applied, and each of the first to fourth connecting portions has a rolling element provided at a side so as to apply a load toward toe guide members.