Adjusting arm clutch capable of unidirectionally controlling rotation angle

The utility model relates to the technical field of automobile adjusting arms, in particular to an adjusting arm clutch capable of unidirectionally controlling a rotation angle, which controls the maximum axial rotation angle of the clutch by setting the fan-shaped angles of a first arc tooth and a second arc tooth, and limits the rotation direction by reversely meshing a first bevel gear and a second bevel gear. The first bevel gear and the second bevel gear are automatically separated, one-way limiting of the rotation angle is achieved, the safety of the clutch is improved, and normal work of the adjusting arm is guaranteed. 本实用新型涉及汽车调整臂技术领域，尤其涉及一种单向控制旋转角度的调整臂离合器，其通过设定第一弧齿合和第二弧齿的扇形角大小，控制离合器轴向旋转的最大角度，通过第一锥齿和第二锥齿反向齿合，限定旋转方向，反向旋转时，第一锥齿和第二锥齿自动分离，实现单向限定旋转角度，提高了离合器的安全性，确保调整臂的正常工作。