| 摘要 |
PROBLEM TO BE SOLVED: To provide a dome type movable contact piece having a long push-in amount, low pressing pressure, sufficient durability, and a reduced bottom-colliding feeling, and a dome type movable contact to which the movable contact piece is fastened.SOLUTION: In a long stroke and dome type movable contact piece 1 having four or more L-shaped or triangle slits 3 formed in a dome type contact piece 2 with a click action function, which is obtained by forming one elastic metal thin plate into a dome type, these slits 3 are formed so as to be disposed at an equal angle with respect to the center of the dome type contact piece 2, the vertical angle part of each slit 3 is directed toward the center position of the dome type contact piece 2, a center part 4 of the dome type contact piece 2 is connected to a peripheral part 5 of the dome type contact piece 2 by a coupling part 6 having a radially uniform width between the slits 3, and these slits 3 reduce pulling tension in the radial direction and the circumferential direction. The dome type movable contact piece 2 is fastened to a sheet 15 only in a required portion. |
