| 摘要 |
A hinge torsion device having a tubular sleeve is disclosed. The hinge torsion device is suitable for electronic devices (such as notebook computers or PDAs). The hinge torsion device comprises a friction element, and a rotary shaft. The friction element is tightly and coaxially inserted into the sleeve, and the rotary shaft is pivotally installed to the friction element. The friction element has an axial hole for being pivotally installed with the rotary shaft. The axial hole is disposed eccentrically. The wall of the friction element has a slot axially arranged and penetrating the wall of the friction element. Thereby, the strength of the cross section of the friction element is enhanced.
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