PROBLEM TO BE SOLVED: To provide a transfer supporting device capable of avoiding interference with a care receiver by a completely new idea.SOLUTION: The transfer supporting device 100 includes: a trolley 1 an arm portion 2 that is pivotably attached to the trolley 1 a body holder 3 provided on the arm portion 2 to hold a care receiver M a third motor 15 as a driving source that pivots the arm portion 2 and a driving force transmission mechanism D. The driving force transmission mechanism D transmits the driving force of the third motor 15 to the body holder 3 while the care receiver M is being transferred, and does not substantially transmit the driving force of the third motor 15 to the body holder 3 while the care receiver M is not being transferred.COPYRIGHT: (C)2011,JPO&INPIT【課題】全く新しい発想で、被介護者に対する干渉を回避することが可能な移乗支援装置を提供する。【解決手段】移乗支援装置100は、台車1と、台車1に対して自在に傾くことができるように取り付けられるアーム部2と、アーム部2に設けられ、被介護者Mを保持する身体保持具3と、アーム部2の傾く動作の駆動源としての第3モータ15と、駆動力伝達機構Dを備える。この駆動力伝達機構Dは、被介護者Mを動かす間は、身体保持具3に対して第3モータ15の駆動力を伝達し、一方で、被介護者Mを動かさない間は、身体保持具3に対して第3モータ15の駆動力を実質的に伝達しない。【選択図】図8