Magnetic hinge apparatus
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United States of America Patent
Stats
-
Dec 14, 2004
Grant Date -
Oct 10, 2002
app pub date -
Apr 2, 2002
filing date -
Apr 4, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic hinge apparatus is applicable to a foldable product (such as folding cellular phone) for connecting the cover and the base. A practical application is provided by aligning two magnetic cams on a shaft. One magnetic cam is connected to the base, and the other is connected to the cover. Also, an attractive force is formed between the opposite surfaces of the two opposite magnetic cams. Before applying any external force on the foldable product, the convex portion of one magnetic cam completely engages the concave portion of the other magnetic cam. When the cover is opened, both magnetic cams are rotated relatively and then separated from the engaged position. When the cover keeps in opening, the convex portions of both magnetic cams are going to touch and then across each other; meanwhile, the magnetic force can attract two magnetic cams back to the engaged position. Accordingly, the foldable product secured by the magnetic hinge apparatus possesses the snap characteristic.
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