PUSH-BUTTON SWITCH MEMBER

To provide a push-button switch member having high durability, in which an inclined push operation is made.SOLUTION: A push-button switch member 1 comprises: key tops 12 and 13; rubber-shaped elastic body dome parts 14 and 15 contacted with the key tops 12 and 13, and having a shape enlarging in a plan view from the key tops 12 and 13; pusher parts 19 and 20 projected to an inner direction of the dome prats 14 and 15 from the key tops 12 and 13; and a base part 16 connected to the dome parts 14 and 15 opposite to the key tops 12 and 13 while nipping the dome parts 14 and 15. Boundary parts 17 and 18 between the key tops 12 and 13 and the dome parts 14 and 15 in the plane view viewing from a top surface of the key tops 12 and 13 have a circle form, an elliptical form, or a polygon form which is a triangle or more, of which a curvature radius is one or more. A circumference of the boundary parts 17 and 18 between the key tops 12 and 13 and the dome parts 14 and 15 is 1.7 times of that of an end surface of the pusher parts 19 and 20.SELECTED DRAWING: Figure 1 【課題】斜め押しの操作がなされても耐久性の高い押釦スイッチ用部材を提供する。【解決手段】本発明は、キートップ１２，１３と、キートップ１２，１３に接続され当該キートップ１２，１３から平面視にて拡径する形状を有するゴム状弾性体のドーム部１４，１５と、キートップ１２，１３からドーム部１４，１５の内方に突出するプッシャー部１９，２０と、ドーム部１４，１５を挟んでキートップ１２，１３と反対側にてドーム部１４，１５と接続されるベース部１６と、を備え、キートップ１２，１３の天面から見る平面視におけるキートップ１２，１３とドーム部１４，１５との境界部分１７，１８は円形、楕円形若しくは曲率半径が１以上の三角以上の多角形であり、キートップ１２，１３とドーム部１４，１５との境界部分１７，１８の周長は、プッシャー部１９，２０の端面の周長の１．７倍以上である押釦スイッチ用部材１に関する。【選択図】図１