An assisting device for assisting the transfer operation of the person being assisted, comprising a base, an arm provided on the base so as to be swingable in the front-rear direction, and supporting a part of the body of the person being assisted, A support portion provided on the arm so as to be swingable in the front-rear direction, a main body portion provided on the base so as to be tiltable in the front-rear direction, an actuator having a movable portion extending and contracting from the main body portion, and a swing on the arm. A first link member that is movably provided and connected to the movable portion； and a second link member that is fixed to the support portion and engages with the first link member, and the movable portion is shortened. A first movement extending from a position to a predetermined middle position is transmitted to the forward swing of the support portion, and a second movement of the movable portion extending from the middle position to the extended position is a forward swing of the arm. A link mechanism for transmission.被介助者の移乗動作を介助する介助装置であって、基台と、前記基台に前後方向に揺動可能に設けられたアームと、前記被介助者の身体の一部を支持し、前記アームに前後方向に揺動可能に設けられた支持部と、前記基台に前後方向に傾動可能に設けられた本体部、および前記本体部から伸縮する可動部を有するアクチュエータと、前記アームに揺動可能に設けられて前記可動部に連結される第一リンク部材、および、前記支持部に固設されて前記第一リンク部材と係合する第二リンク部材を有し、前記可動部が短縮位置から所定の途中位置まで伸びる第一動作を前記支持部の前方への揺動に伝達し、前記可動部が前記途中位置から伸長位置まで伸びる第二動作を前記アームの前方への揺動に伝達するリンク機構と、を備える。
