| 摘要 |
PURPOSE: To prevent undesirable deformation by fixing a spring element in a case under preliminary stress while allowing the supporting base to cooperate with the spring element and holding the supporting base in a base, thereby preventing a thin wall area of the case from being applied thermally with large load. CONSTITUTION: The case 3 in which a hinge element 7 provided with the spring element 5 is mounted is provided with a recessed part 9 and connected to a left through hole 11. The through hole 11 is penetrated through the left end wall 13 of the case 3, the he width of the recessed part 9 is larger than the width of he through hole 11. Since the width of the spring element 5 is matched with the width of the recessed part 9, the supporting base 15 on which the spring element 5 is abutted is provided in a moving range between the recessed part 9 and the through hole 11. The supporting base 15 functions as the first joint shoulder part of the spring element 5, which is joined to a second joint shoulder part 17 at a side part confronting the supporting base 15. The interval between the supporting table 15 and the shoulder part 17 is selected to be applied with preliminary stress in the state of incorporating the element 5. By this preliminary stress, each part housed in the case 3 is surely held. |
