Patent attributes
A parallelism control device applied to dual-shaft system for fixing the parallelism of the rotary shafts and facilitating the assembling process. The device includes an assembly of a first and a second rotary shafts and a fixing unit capable of providing torque effect. Each of the first and second rotary shafts has a fixed section and a pivoted section mounted on an electronic apparatus. The fixing unit has a substantially C-shaped cross section and includes a first and a second sections, a connection section in connection with the first and second sections and a split between the first and second sections. The first and second sections and the connection section are fixedly assembled with the pivoted sections of the first and second rotary shafts so as to avoid deflection of the first and second rotary shafts and fix the parallelism thereof.