LID ASSEMBLY STRUCTURE

In a lid assembly structure which includes a base member a lid and an opening/closing mechanism and in which the opening/closing mechanism includes a biasing member during assembling of the base member and the opening/closing mechanism the biasing member is guided by a guide portion which is a part of the opening/closing mechanism and a state of the biasing member is changed from a temporary assembled state where a second engagement end of the biasing member and a temporary engagement portion engage with each other to a main assembled state where the second engagement end and a main engagement portion of a mating member engage with each other, thereby accumulating at least a part of a biasing force in the biasing member