| 摘要 |
A rotary hinge mechanism ( 20 ) includes a connecting element ( 22 ), a first hollow fixing element ( 24 ), and a second hollow fixing element ( 26 ). The connecting element is a hollow cylinder. The connecting element has a first limiting stopper ( 2224 ) and a second limiting stopper ( 2228 ). The first limiting stopper and the second limiting stopper are respectively formed on two opposite surfaces thereof and circumferentially spaced. The first hollow fixing element has a first abutting block ( 243 ) formed on one end surface thereof. The second hollow fixing element has a second abutting block ( 263 ) formed on one end surface thereof. The first fixing element is rotatably connected with one end of the connecting element, and the other end of the connecting element is rotatably connected with the second fixing element.
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