Patent ID: 7672451
Filing Date: 2010-03-02
Classification: H04M,Y10T

Abstract:
1. An electronic handheld device comprising: a first panel; a second panel rotatable relative to the first panel about an axis such that the first and second panels are folded or unfolded with respect to each other; a hinge housing engaged with the first panel; a first hinge member received in the hinge housing and linearly movable relative to the hinge housing along the axis; a second hinge member engaged with the second panel and rotatable relative to the first hinge member about the axis, wherein one of the first and second hinge members comprises a cam having a cam surface, wherein the other comprises a cam follower in contact with the cam surface and configured to move along a path on the cam surface; and a resilient member configured to keep the cam follower and the cam surface in contact with each other, wherein the hinge housing comprises an inner wall defining a hole generally extending along the axis, wherein the first hinge member is configured to linearly move within the hole, wherein the inner wall comprises a curved surface and a key, wherein at least part of the curved surface is a circular arc having a first radius from the axis when viewed along the axis, wherein the key is configured to hinder the first hinge member from rotating relative to the hinge housing, wherein the key is located outside an imaginary circle, wherein a portion of the circumference line of the imaginary circle overlaps the circular arc.