Patent ID: 7983596

Claim:
A housing structure, comprising a first structure configured to house a main body functional part, the first structure having body frames disposed at opposite sides of the first structure and a first shaft supported by the body frames; a second structure configured to house a separate body functional part and to be movably supported between an opened position and a closed position by the first shaft of the first structure; and a positioning device configured to position the separate body functional part in relation to the main body functional part in the closed position, the positioning device including: a first engagement portion provided on the first structure; a second engagement portion provided on the second structure, the second engagement portion being engaged with the first engagement portion in the closed position; a first biasing device configured to bias the second engagement portion toward the second structure; and a second biasing device configured to bias the second engagement portion toward the first structure, wherein the positioning device is configured to position the separate body functional part in relation to the main body functional part by biasing forces of the first biasing device and the second biasing device, wherein the positioning device includes a movable receiving member configured to make contact with the second engagement portion and to be pressed by the first biasing device to position the second structure in relation to the first structure in the closed position, and wherein the first biasing device includes a second shaft, and the movable receiving member is supported rotatably about the second shaft at a side in relation to the first structure.