PURPOSE: To increase the life of a switch by forming second contact points of a lower protruding height than first contact points on one side or both sides of the motion direction of a contact plate to the first contact points.
CONSTITUTION: First contact points 7, 8 are embossed to a protrusion 5 to protrude in the opposite direction to the protrusion 5 on both sides of the direction perpendicularly crossing the motion direction of a contact plate 4, and second contact points 9, 10 of a lower height than the first contact points are embossed on both sides along the motion direction of the contact plate 4. A ball 6 of a positioning plunger is energized down at a lower part of a diagonal side 20 at the protrusion 5. This energization position is composed to be the position of the center of gravity of a triangle composed of the first contact points 7, 8 and the second contact point 9 in contact with a substrate 2, and the load is applied uniformly to the three contact point in contact with it. The life of a switch is doubled by this.
MORI SHIGETAKA
KAWASE TOSHIHIRO
SHIODA KAZUYA
MIZUTA YUKIO
| JPS5769128U | 1982-04-26 | |||
| JPS3930469Y1 | ||||
| JPS46376A |
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