| 摘要 |
<p>Disclosed is an analog pointing key structure provided with a rigid key top, a surrounding member having a hole from which the rigid key top is exposed, a support member to which the rigid key top is secured and in which an elastic return portion is allowed to move/return in a direction along the surface of the key top, a ring-like magnet member which is secured to the support member on the underside of the surrounding member and which is positioned between the rigid key top and the elastic return portion, a magnetic sensor for detecting the change of magnetic flux density caused by the movement of the magnet member in association with the rigid key top, an annular blindfold plate which is provided on the surface of the magnet member and which has an inner peripheral portion positioned on the inside of the hole of the surrounding member, a key top support plate to which the rigid key top is bonded and in which the outer peripheral portion thereof is positioned on the underside of the blindfold plate, and has an outer diameter larger than the inner diameter of the blindfold plate, and an elastic member which is secured to the underside of the support member and which allows the key top to move/return in the thickness direction of the support member.</p> |
