Abstract: A complex moving/rotating pivot shaft device is applicable to a double-screen or flexible screen to minify the assembling/moving space of the components. The complex moving/rotating pivot shaft device includes an assembly of a fixing seat and a moving module. The moving module includes an operation arm, a guide section disposed on the operation arm and a bridge unit disposed between the operation arm and the fixing seat. The bridge unit has a shaft pillar, a reciprocally movable bolt and a guiding section in cooperation with the guide section, whereby the operation arm can move along the guiding section to reach a set position. Thereafter, the operation arm can rotate around the shaft pillar of the bridge unit to achieve opening/closing effect.

Abstract: A torque-variable single-shaft rotary shaft structure with multiple frictional pairs includes a pivot shaft. A first support is secured to a pivot shaft and a second support is disposed on the pivot shaft. An adjustment wheel assembly, a frictional assembly and an elastic assembly are fitted on the pivot shaft. The adjustment wheel assembly and the frictional assembly have a first adjustment wheel and a second frictional member synchronously movable with the first support and a second adjustment wheel and a first frictional member synchronously movable with the second support. When the first and second supports are rotated, the first and second adjustment wheels are driven to contact and abut against each other so as to provide axial action forces. The frictional assembly has multiple first and second frictional members, which are alternately arranged in frictional contact with each other to form multiple frictional pairs.