| 摘要 |
PROBLEM TO BE SOLVED: To provide a button capable turning on a switch contact even if pressing an outer edge of a keytop, and to provide an operation part provided with the button and an electric device provided with the operation part. SOLUTION: This button is provided with a sheet 210 having the switch contact 211 turned on and turned off by elastic deformation, key rubber 220 having a contact protrusion 225 turning on and turning off the switch contact by elastic deformation, and the keytop 230 covered with the key rubber and capable of pressing the key rubber. A keytop inclination regulating part 232 regulating gradient of the keytop is provided in the keytop, and the key rubber is formed small as compared with the keytop. Thereby, when the outer edge of the keytop is pressed, the pressing force can be distributed to the contact protrusion and the elastic deformation part of the key rubber. So, the keytop and the key rubber do not incline and the contact protrusion of the key rubber can surely contact the switch contact of the sheet. COPYRIGHT: (C)2007,JPO&INPIT
|
