自在鉤の原理を利用した鉗子用力リミッタのためのロック機構の提案

抄録

In previous study, I developed a forceps force limiter which uses leaf spring buckling. However, the maximum stress of the buckled leaf spring might exceed the allowable stress because this mechanism does not limit the displacement of the leaf spring. This paper proposes a lock mechanism of the force limiter which applies the friction mechanisms of ”Jizaikagi”. The shape of ”Jizaikagi” is slender, which enables to install it in forceps. If the displacement of the buckled leaf spring exceeds the threshold value, then this mechanism locks the handles of the proximal side. The developed lock mechanism has 12 mm in thickness, and I confirmed that the proposed mechanism locked the handles when grasping force was 13 N.