| 摘要 |
PROBLEM TO BE SOLVED: To provide a thin switch using a U-shape contact spring member, wherein the switch is structured to stand stably to switching of several hundred thousand times by integrally fixing a small spring member with small width (for example: 1.0mm or smaller) to a push lever, and by giving resiliency required as the switch to the U-shape contact spring. SOLUTION: In the push lever switch, double contact spring members 1a and 1b are secured integrally to a robust spring member holder 5 made of metal by securing means such as crimp to provide a contact spring member unit A. The unit A is fixed to the lower face of a push lever 10 to provide a push lever unit B in which both units are integrated together. The push lever B is inserted into a case 13 to make contact (ON) the contact point a of an outer contact spring member 1a with the fixed contact point 15 of the case 13. A small and thin push switch excellent in stability and durability is obtained, in which the contact point a' of an inside contact point spring member 1b and a fixed contact point 16 is provided met each other in separated (OFF) state with an operation part 12 provided protruded on outside of the case 13. COPYRIGHT: (C)2004,JPO
|
