| 摘要 |
PROBLEM TO BE SOLVED: To provide a case which prevents the external force from pressing a synthetic resin hinge shaft as a shearing force and prevents the hinge shaft from being destroyed, and gets more durable and safer. SOLUTION: A hinge structure of a case 1 is attached with a synthetic resin shaft 9 which connects a case body 5 and a lid body 8 so that they can easily rotate to open/close, has a downward shoulder 12 at a rear edge 5a of the case body 5, has an engaging tier 13 which projects upward to the shoulder 12 at a rear edge of a hinge piece 7 facing to the rear edge 5a, and an engaging piece 10 is attached protruding at the edge of the hinge piece 7 of the lid body 8, an abutment member 11a where the engaging piece 10 bumps downward is attached to the edge of a hinge piece 3 of the case body 5, then, the rotation of the lid body 8 around the case body 5 is limited between the two projecting positions which keep the hinge shaft 9 between them, and it prevents the external force from acting to the hinge shaft 9 as a shearing force, and prevents the hinge shaft 9 from getting destroyed by the shearing force. |
