| 摘要 |
PURPOSE:To stabilize an opening/closing operation and prevent reduction of a snapping force if the opening/closing operation is repeatedly conducted. CONSTITUTION:Two integral molded hinges 4 are provided at an interval. A large-width hinge strap 5 is provided between the both. End parts of the hinge strap 5 are respectively connected to a body part 2 and a cap part 3 by angular parts. The hinge strap 5 is made substantially linear in an open position for the body part 2 and the cap 3. The hinge strap 5 is curved in a close position therefor. Thus, the hinge strap 5 is not tensed in either position. |
