| 摘要 |
PROBLEM TO BE SOLVED: To provide a contact spring with 2-step click retaining long service life and low cost. SOLUTION: The contact spring with 2-step click 1 is structured by boring a plurality of long holes 3 at even intervals on a circular flat spring member; forming a part outside the long holes 3 in a dish-like or dome-like shape to be a first movable contact part 4 capable of reversely returning; forming a part on the center side from the long holes 3 in a dome-like shape forming a protrusion or recess in the same direction as the first movable contact part 4 to be a second movable contact part 5 capable of reversely returning; connecting the first movable contact part 4 and the second movable contact part 5 with connection parts 9 between the neighboring long holes 3; forming first movable contacts 6 from protrusion parts on recess side faces of the connection parts 9; forming a second movable contact 7 at the center of the recess-side face of the second movable contact part 5; and forming a plurality of supporting pieces 8 at the outer peripheral edge of a circular spring member 2. COPYRIGHT: (C)2010,JPO&INPIT
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