| 摘要 |
A hinge assembly ( 100 ) includes a sleeve ( 10 ), a first magnetic member ( 20 ), a second magnetic member ( 20 ), and a locking member ( 40 ). The sleeve is hollow with an open end. The first magnetic member has a first face ( 242 ) and a second face ( 444 ) at a first end ( 232 ) thereof. The first face and the second face have opposing polarities. The second magnetic member is a cylinder. The second magnetic member is received in the sleeve and rotatable relative to the first magnetic member. The second magnetic member has a third face ( 342 ) and a fourth face ( 344 ) at an end thereof facing the first end of the first magnetic member. The third face and the fourth face have opposing polarities. The locking member is disposed at the open end of the sleeve and fixing connected with sleeve.
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