A Multifingered Hand with Three Coupled Four-bar Mechanisms

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  • OBATA Yoshinobu
    Dept. of Control Engineering, National Institute of Technology, Sasebo College
  • MAKITA Satoshi
    佐世保工業高等専門学校　電子制御工学科

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Other Title
  • 三連結四節リンク機構を有する多指ロボットハンド

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<p>Myoelectric prosthetic hands should be lighter in weight and maintainable, and able to exert large grip force to comfortably substitute the upper limb of amputees in daily life. This means it requires a lighter and simplified system whilst maintaining grip force. In this paper, we propose a five-fingered mechanical hand which each finger is comprised of three coupled four-bar mechanism. And three fingers of them is connected to a balance joint driven by a servo motor for adaptive grasping. We examined this mechanism's grip force and compliance performed by three small RC servo motors. The result shows that the hand can grasp several kinds of objects used in daily life weighing up to 2kg, in addition to being lightweight.</p>

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