| 摘要 |
Including an operation body of circular ring shape, a first guide plate of magnetic body fixed to the downside of the operation body, a plurality of movable magnets disposed on the downside of a first flat plane of the first guide plate concentrically with the operation body, a base for rotatably supporting the operation body from beneath, a detection element for detecting a change in magnetic field from the movable contacts due to rotating operation of the operation body without making contact, and a second guide plate of a magnetic body fixed to the base having a plurality of second flat planes opposite to the disposing position of the movable magnets so as to be opposite to each one of the movable magnets, the plurality of movable magnets face to or depart from each one of the second flat planes of the second guide plate depending on the rotation of the operation body. Hence, a rotary operation type input device having a clear click feel can be obtained at low cost and in thin type.
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