| 摘要 |
A joystick has a dome facing a flat position sensitive detector for use an electronic device. The dome is elastically mounted so that the apex of the dome rests on the detector. As the joystick is deflected, the dome and the detector roll against each other such that the apex of the dome moves to a different location of the detector surface. The joystick can be depressed to cause the dome to buckle in order to select a function of the electronic device. When the joystick is depressed, the contact area between the dome and the detector increases abruptly. After the dome is buckled, the user can exert an uneven pressure to the joystick to allow the electronic device to carry out another function.
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