To provide a support device of a one-way clutch for suppressing the application of an impact load to the fixing part of a first race or the inside of the clutch accompanying input of a force in a direction opposite to a rotation direction allowed to a second race, in the one-way clutch used with the position in a circumferential direction of a first race fixed.

In the support device of the one-way clutch F, the one-way clutch F includes an outer race fixed to a case 31 and an inner race rotating only in one direction to the outer race. The outer race is fixed to the case 31 with the fixing part 60. The fixing part 60 allows switching between a fixed state and a released state. In the fixed state, the fixing part is fixed to both the case 31 and the outer race and restricts the rotation of the outer race to the case 31. In the released state, the fixing part is separated from one of the case 31 and the outer race and allows the rotation of the outer race to the case 31.

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