Patent ID: 7219393
Filing Date: 2007-05-22
Classification: E05D,E05F,E05Y,G06F,Y10T

Abstract:
1. A hinge supporting a first portion and a second portion such that said first portion and said second portion open and closed relative to each other, the hinge comprising: a rotation shaft fixed to said second portion and supported by said first portion such that said rotation shaft is rotatable around a rotation axis thereof relative to said first portion; a first part into which said rotation shaft is inserted; a second part into which said rotation shaft is inserted; a first energizer; and a second energizer comprising at least one torsion coil spring into which said rotation shaft is inserted for energizing said first and second portions to open relative to each other around said rotation shaft, wherein said torsion coil spring comprises a coil and a pair of extensions extending from said coil, wherein one of said extensions is fixed to one of said first and second portions and the other of said extensions is fixed to the other of said first and second portions, wherein one of said first and second parts defines a fixed part fixed to said first portion such that said rotation shaft is rotatable around said rotation axis relative to said fixed part, the other of said first and second parts defines a movable part which is axially movable relative to said rotation shaft and not independently rotatable around a rotation axis thereof relative to said rotation shaft so that the movable part rotates together with said rotation shaft when said rotation shaft rotates around said rotation axis thereof relative to said first portion, said first part has a projection projecting towards said second part, and said second part has a projection projecting towards said first part, said projections overlapping each other axially of said rotation shaft when said first and second portions are open to each other at a certain angle in a range of predetermined angles, said first energizer energizes said movable part towards said fixed part, and when said first and second portions are open to each other at a certain angle in the range of said predetermined angles, said first and second portions are kept open at said certain angle by virtue of frictional force generated between said projection of said fixed part and said projection of said movable part.