| 摘要 |
A pivot shaft device installed between an object and a body for adjusting a relative angle therebetween is disclosed. The pivot shaft device comprises an axial shaft, an axial sleeve and at least one retaining element. Each retaining element has a plurality of friction arms and at least one positioning portion. The plurality of friction arms are arranged along the axial direction of the axial sleeve and are parallel to each other. The positioning portion is integrally connected to each of the ends of the friction arms. When the axial shaft inserts into the axial sleeve installed with the retaining element, as the object rotates with respect to the body, a steady torsional force is generated by the interaction of the friction arms and the first axial portion.
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