| 摘要 |
PROBLEM TO BE SOLVED: To provide a push button switch using a lead switch that can be designed to be thin as a whole.SOLUTION: A leaf spring 4 has an action point 41, and the action point 41 is pressed through a pin 31 by a push-in operation of a push button 2. The leaf spring 4 has plural branch springs 42a to 42d which are located at an equal distance from the action point 41 on the same circumferential direction. Each of the branch springs 42 is bent at a designated angle in a direction opposite to the push button 2 and each tip of which is positioned. When the action point 41 is pressed, each bending angle of the branch springs 42 is deformed, and the leaf spring 4 is rotated around the action point 41 by a certain angle. The rotation of the leaf spring 4 makes a magnet 5 approach to a lead switch 6, so that the lead switch 6 is turned on. When the press of the button 2 is released, the leaf spring 4, the magnet 5 and the push button 2 are returned to original positions by resilience of the branch springs 42, and the lead switch 6 is turned off.SELECTED DRAWING: Figure 1 |
