PROBLEM TO BE SOLVED: To provide a lumbar burden alleviation tool which enables natural walking by releasing the tensile force of a tensile force transmission string automatically during upright walking and generates an auxiliary moment to the waist portion when the person restarts a forward-bending work after walking.SOLUTION: A lumbar burden alleviation tool (10) serves as a connectedly mounting mechanism (22) of a waist pad part (12b) and tensile force transmission strings (18, 20) and includes: a pair of right and left swing arms (22a, 22b) having an end rotationally pivoted on the waist pad part (12b) and the other end connected with the tensile force transmission strings (18, 20) springs (22e, 22f) connecting the other end of the swing arms (22a, 22b) and the waist pad part (12b) and stopper parts (22c, 22d) attached to the rotation arms (22a, 22b).COPYRIGHT: (C)2015,JPO&INPIT【課題】直立歩行時に自動的に張力伝達紐の張力を解除して自然歩行を可能にし、歩行から再び前屈作業を開始すると腰部への補助モーメントを発生させる腰部負担軽減具を提供する。【解決手段】腰部負担軽減具(10)が、腰当て部(12b)と張力伝達紐(18、20)との連結装着機構(22)として、一端を腰当て部(12b)に回転可能に軸着し、他端部を張力伝達紐(18、20)に連結した左右一対の揺動アーム(22a、22b)と、揺動アーム(22a、22b)の他端側と腰当て部(12b)とを連結したばね(22e、22f)と、回転アーム(22a、22b)に付設されたストッパー部(22c、22d)とを備える。【選択図】図1
