To provide a roller structure with a built-in one-way clutch having a desirable rotating load with simple and economic structure.

This roller structure 20 has a first rotary member 24 with the built-in one-way clutch 22, a second rotary member 28 having a rotary shaft 26 pivotally supported by the one-way clutch 22, and a torque mechanism 30 installed in the first rotary member 24. The torque mechanism 30 is provided with a rubber ring 42 to be installed in the first rotary member 24 and a support member 44 to be pressure-fitted to the peripheral surface of the rubber ring 42.