| 摘要 |
A hinge assembly ( 200 ) includes a retaining member ( 4 ), a fixing seat ( 5 ), a control member ( 6 ), a first spring ( 7 ), a follower element ( 10 ), a rotating element ( 20 ), a second spring ( 9 ) and a shaft ( 30 ). The first spring provides an elastic force to the control member. The rotating element includes an axis hole having an inner screw thread ( 4342 ). The rotating element disposes two protrusions ( 24 ). The follower element includes two recesses ( 15 ) and two plane portions ( 16 ). The second spring provides an elastic force to make the protrusions of the rotating element receive in the recesses of the follower element and resist each other. The shaft defines an outer screw thread ( 233 ). The outer screw thread engages with the inner screw thread of the rotating element.
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