Development of Thumb-Operated Dial-Type Integrated Switch and its Effectiveness

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  • MURATA Atsuo
    Graduate School of Natural Science and Technology, Okayama University
  • MORIWAKA Makoto
    Graduate School of Natural Science and Technology, Okayama University
  • WANG Shuguang
    Graduate School of Natural Science and Technology, Okayama University

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  • 親指操作型ダイヤル式統合スイッチの開発とその有効性評価
  • オヤユビ ソウサガタ ダイヤルシキ トウゴウ スイッチ ノ カイハツ ト ソノ ユウコウセイ ヒョウカ

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Abstract

A thumb-operated dial-type integrated switch for automobile use was developed, and the task completion time for this type of integrated switch was compared with that for a traditional integrated switch. The rotation torque of an encoder and the rotation diameter ware selected as experimental parameters. An attempt was made to identify the recommended condition of rotation torque and diameter. It was demonstrated that the thumb-operated dial-type integrated switch led to faster task completion time as compared with the traditional integrated switch. As for the thumb-operated dial-type integrated switch, the following combination of the rotation torque and the rotation diameter were not proper: diameter of 20 mm for the rotation torque of 12.9 mN·m and 9.2 mN·m, and diameters of 20 mm and 40 mm for the rotation torque of 8.6 mN·m. It was also suggested that the optimal condition cannot be identified using the condition of the rotation force only, and that the optimal condition must be determined taking into account the combination of the rotation torque and the rotation diameter.

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