| 摘要 |
<p>PURPOSE:To provide an electrostatic capacity sensor capable of being arrayed in all horizontal/vertical gap parts generated among respective keys arrayed on a keyboard. CONSTITUTION:The electrostatic sensor is provided with base plates 1, 2 oppositely arrayed through a gap respectively consisting of horizontally extended parts X and vertically extended parts Y extended to one direction rectangularly to the parts X, an operation shaft J erected on the base plate 1, variable capacitors Cx+, Cx- constituted of electrodes mounted on respective opposite faces of the horizontally extended parts X of both of the base plates 1, 2, a variable capacitor Cy+ constituted of electrodes mounted on respective opposite faces of the vertically extended parts Y of the plates 1, 2 a fixed capacitor Cy- mounted on the outside of the base plates 1, 2. Thereby, a distance between respective parts of the plates 1, 2 is changed by force applied to the shaft J and the contents of the electrostatic capacity of the capacitors Cx+, Cx-, Cy+ are respectively changed.</p> |
