| 摘要 |
PURPOSE:To control the strain amount of a shape memory spring and a contact precisely by furnishing a No.1 restricting part at a contact, and installing a No.2 restricting part at the bulkhead inside the adjoining contact. CONSTITUTION:No.1 restricting part 8 consisting of a boss for restriction of the motion extent of each contact 4 is provided at the side face of No.1 fold- back part 4C of the contact 4. On the other hand, No.2 restricting part 9 consisting of for restriction of the motion extent of contact in cooperation with No.1 restricting part 8 is installed at the bulkhead 5 between the contacts 4 in each row. These restricting parts 8, 9 are fitted with each other restrict the motion extent of contact. Under high temp., a shape memory spring 6 restores its shape in the direction of shrinking inward. At this time, the restricting part 8 runs against a stopper 9A of the other restricting part 9 to be restricted, even though the shape memory spring 6 exerts unnecessarily large force, so that the limit strain for the contact 4 will never be exceeded.
|
