Patent ID: 7467000
Filing Date: 2008-12-16
Classification: E05D,E05Y,G06F,H04M,Y10T

Abstract:
1. A hinge device of a portable equipment comprising: a first hinge portion including a first hinge pin and coupling a first case body and a second case body constituting the portable equipment to each other so as to allow the second case body to rotate relative to the first case body with respect to the first hinge pin; a second hinge portion including a second hinge pin which extends in a direction perpendicular to the first hinge pin and coupling the first case body and the second case body to each other so as to allow the second case body to rotate relative to the first case body with respect the second hinge pin, wherein said second hinge portion comprises: the second hinge pin standing vertically on the first case body; a hinge body provided to be rotatable around an axis of the second hinge pin; a second cam A fixed to a fore end portion of the second hinge pin; a second cam B rotating together with the hinge body as well as being movable in an axial direction of the second hinge pin, and being in surface contact with the second cam A; a second biasing means, provided between the second cam B and the hinge body, for biasing the second cam B toward the second cam A; a second cam convex portion provided on at least one of a contact surface of the second cam A and a contact surface of the second cam B; and a second cam concave portion provided on at least the other of the contact surface of the second cam A and the contact surface of the second cam B and engaged with the second cam convex portion to keep a position of the second case body relative to the first case body at a predetermined position in a locked state, wherein said first hinge portion comprises: a hinge case body fixed to the hinge body; the first hinge pin rotatably supported by the hinge case body; a first cam A fixed to the first hinge pin and having a mounting part to which the second case body is attached; a double-sided cam engaged with the hinge case body as well as being movable in an axial direction of the first hinge pin, and being in surface contact with the first cam A; a first cam B rotating together with the first hinge pin as well as being movable in the axial direction of the first hinge pin, and being in surface contact with the double-sided cam; a first biasing means, provided between the first cam B and the hinge case body, for biasing the first cam B toward the double-sided cam to thereby press the double-sided cam against the first cam A; first cam convex portions provided on at least one of a contact surface of the first cam A and a first contact surface of the double-sided cam being in contact with the first cam A and on at least one of a second contact surface of the double-sided cam being in contact with the first cam B and a contact surface of the first cam B; and first cam concave portions provided on at least the other of the contact surface of the first cam A and the first contact surface of the double-sided cam and on at least the other of the second contact surface of the double-sided cam and the contact surface of the first cam B, and engaged with the first cam convex portions to keep a position of the second case body relative to the first case body at a predetermined position in a locked state.