PROBLEM TO BE SOLVED: To provide a hand exo-skeleton device in which an output in the bend of a three-layer-connecting slide spring can be obtained more greatly than the output in the stretch of the three-layer connecting slide spring.SOLUTION: A zero-th exterior part 19, a first exterior part 21, a second exterior part 23 and a third exterior part 25 serially disposed in the longitudinal direction of fingers are connected by multiple groups of slide springs and fixed springs disposed in parallel in the vertical direction, respectively. The slide spring for fixing the upper part of each exterior part is made a variable length so that a certain constant distance may be moved to the finger longitudinal direction by a slider mechanism. The fixed spring for fixing a central part of the vertical direction of each exterior part is fixed in the exterior part at both ends. In the lower part of each exterior part, a drive spring 49 is included which can freely slide only in the finger longitudinal direction. The drive spring 49 fixes the tip to the zero-th exterior part 19, and fixes the base end to a drive shaft 27. The slide spring and fixed spring for connecting each exterior part along with the drive spring 49 are constituted with three layers in the vertical direction.SELECTED DRAWING: Figure 3【課題】三層の連結スライドばねの屈曲時の出力を三層の連結スライドばねの伸展時の出力よりも大きく得られる。【解決手段】手指の長手方向に直列に配置した第０外装部１９、第１外装部２１、第２外装部２３、第３外装部２５を、上下方向に並列に配置した複数組のスライドばね及び固定ばねによりそれぞれ連結する。各外装部の上部を固定するスライドばねは、スライダ機構により、ある一定の距離を手指長手方向に対して移動できるように可変長とする。各外装部の上下方向の中央部を固定する固定ばねは、その両端において外装部に固定する。各外装部の下部には、手指長手方向についてのみ自在にスライド移動可能な駆動ばね４９を備える。駆動ばね４９は、先端を第０外装部１９に固定し、基端を駆動軸２７へ固定する。各外装部を連結するスライドばね及び固定ばねと、駆動ばね４９とを、上下方向に三層で構成する。【選択図】図３
