Roller pin multistation axial clutch structure of hand-operated torque screw screwdriver

A roller pin multistation axial clutch structure of a hand-operated torque screw screwdriver comprises a roller pin base, a roller pin, a rolling ball set, a rolling ball base, a fixed pin and a sliding spring retainer. The rolling ball base is sleeved on the sliding spring retainer. A groove corresponding to the roller pin is formed in the roller pin base, and the roller pin is arranged in the groove. The diameter of the roller pin is larger than the depth of the groove. A circular arc groove extending in the circumferential direction is formed in the rolling ball base. The rolling ball set is arranged in the circular arc groove through a rolling ball support. The roller pin and rolling balls are correspondingly arranged. The roller pin makes contact with the rolling balls on the rolling ball base through rotation of the roller pin base to generate sliding friction. According to clutch structure, a single-roller-pin and multistation mode is adopted, the contact points between the single roller pin and the ro