| 摘要 |
A hinge assembly ( 10 ) for interconnecting a main body and a cover of a portable electronic device includes a hinge housing ( 20 ), and a first hinge apparatus ( 30 ) and a second hinge apparatus ( 40 ) rotatably contained in the housing. The first hinge apparatus includes a cam ( 36 ) rotatably attached to the housing and fixed to the main body, and other elements housed in the housing and fixed relative thereto. The second hinge apparatus includes a boom ( 43 ) fixed to the cover, a boom cover ( 48 ), a support ( 41 ) rotatably attached to the boom and fixed to the housing, and two ball bearings contained between the boom and the boom cover. The cover is opened relative to the main body by being rotated about an X-axis of the first hinge apparatus. The cover is then rotated relative to the housing about a Y-axis of the second hinge apparatus.
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