Patent ID: 7043798
Filing Date: 2006-05-16
Classification: E05D,E05Y,G06F,H04M,Y10T

Abstract:
1. A hinge device adapted to connect two parts of a foldable apparatus, the parts being rotated to define a first angle therebetween, the hinge device comprising: a first hinge sleeve adapted to be connected to one part of the foldable apparatus; a second hinge sleeve adapted to be connected to the other part of the foldable apparatus; a pin; a first disk fitted unrotatably into the first hinge sleeve, the first disk comprising a receiving recess receiving the pin, and a balancing member for offsetting an unbalance causing by the pin; a spring member received in the first hinge sleeve, and sandwiched between the first hinge sleeve and the first disk; a second disk fitted unrotatably into the second hinge sleeve and abutting the first disk, the second disk defining at least two engaging recesses, the engaging recesses engaging with the pin under the effect of resilient force of the spring member, wherein the two engaging recesses define a second angel therebetween which is the same as the first angel; and a shaft combining the first hinge sleeve, the spring, the first disk, the second disk and the second hinge sleeve together; wherein in operation, the pin is firstly received in a space defined by the receiving recess and one of the engaging recesses, then second hinge sleeve is rotated relative to the first hinge sleeve, thereby driving the second disk to move relative to the first disk, the pin is rotated and received in a space defined by the receiving recess and the other one of the engaging recesses.