PROBLEM TO BE SOLVED: To provide a plate spring for an artificial leg capable of storing greater elastic energy.MEANS: A plate spring for an artificial leg is constituted of a plate spring having an attachment surface part provided under a stump part of a leg part, a curved surface part extending toward one side of the leg part and curved downward, and a ground plane part facing the attachment surface part. In the curved surface part, a height from the ground plane part to a bent part having the largest curvature is equivalent or more to a height from the ground plane part to the attachment surface part.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】より大きな弾性エネルギーを蓄えることができる義足用板バネを提供すること。【手段】脚部の断端部の下方に設けた取り付け面部と、前記脚部の一方に向けて延設され下方に湾曲している湾曲面部と、前記取り付け面部と対向する接地面部とを有している板バネから構成されており、前記湾曲面部のうち、前記接地面部から曲率が最も大きくなる屈曲部までの高さが、前記接地面部から前記取り付け面部までの高さと同等以上である義足用板バネ。【選択図】 図1
