Patent ID: 8662608

Claim:
A height adjusting mechanism, comprising: a hinge shaft; an adjusting member for driving the hinge shaft to rotate around an axis of the hinge shaft; a constraining member for constraining a movement of the adjusting member in an axial direction of the hinge shaft; and a base with the constraining member fixedly connected thereto, wherein the hinge shaft connected with the base is liftable in the axial direction of the hinge shaft under the driving of the adjusting member, the base comprises: a supporting base part to which the hinge shaft is liftably connected; and a hinge base part in which the supporting base part is detachably accommodated, the hinge shaft comprises: a fitting shaft portion; an adjusting shaft portion connected to the fitting shaft portion which is mated with the adjusting number so as to adjust the hinge shaft; and a connecting shaft portion which is threadedly connected to the base; a center of the adjusting member is formed with an adjusting aperture which is of a polygonal shape at the center thereof, and the adjusting shaft portion has a cross section perpendicular to the axis mated with the polygonal shape, which is configured to be running fitted with the adjusting aperture; the adjusting member has a cross section perpendicular to the axis with a polygonal periphery; the peripheral surface of the adjusting member is formed with adjusting grooves which are extended in the axial direction; and the supporting base part has an end facing toward the adjusting member being formed into a stepped part having a first surface and a second surface higher than the first surface in the axial direction, with the adjusting member being disposed on the first surface and the constraining member being detachably connected to the second surface and the adjusting member being disposed between the first surface and the constraining member.