A novel self-adaptive bionic robot hand with flexible fingers

Amputees' demands of bionic prosthetic hands are increasing today. However, most of today's commercial bionic prosthetic hands are designed with rigid fingers, which has many disadvantages and brings a lot of inconvenience. On the contrary, flexible bionic finger shows its own advantages gradually because of its great performance on self-adaption and impact resistance. Apparently, the design of the self-adaptive flexible bionic finger is an important part of the design of the bionic prosthetic hand. This paper proposes a flexible finger with a spring that can resist impact and adapt the shape of the objects. Basing on the mechanism, the bionic prosthetic finger and the hand are designed. The hand has three fingers and each finger has 2 DOFs. The theoretical analysis and the relevant experiment results show that the hand can efficiently resist the impact.

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