| 摘要 |
A synchronously adjustable pivot has a function of balancing the torque and is provided between an outer receiving seat and an inner receiving seat. The pivot further includes an outer sleeve. One end of the outer sleeve is provided with a knob and an inner sleeve threadedly connected to the knob. Further, the other end of the outer sleeve is provided with a bolt. Elastic elements are provided at the outside of both ends of the outer sleeve. When the pivot provided with elastic elements is arranged into the inner receiving seat, a washer having high coefficient of friction is disposed between the outer receiving seat and the inner receiving seat. Finally, a bolt is used for fixation. With the above arrangement, when the degree of tightness between the outer receiving seat and the inner receiving seat is enhanced via the pivot, the large friction generated by the washer is used to balance the rotating torque on both ends of the pivot and keep the degree of tightness on both ends thereof equal.
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