Importance

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Abstract

It is an object of the present invention to provide an innovative hinge device of a dual-shaft construction that performs a synchronized pivoting motion, and that can smoothly perform an undulating pivoting motion without any unsteadiness; and an electronic device using the hinge device. The present invention is a hinge device in which a second member 2 is connected to a first member 1 so that the second member 2 can perform an undulating pivoting motion from a state in which the first member 1 and second member 2 are overlapped, wherein the hinge device is constructed so that pivot shaft parts 4 and 5 are disposed in parallel on a hinge base 3 disposed between the end part of the first member 1 and the end part of the second member 2; the hinge base 3 is provided so as to be free to perform an undulating pivoting motion with respect to the first member 1 via the first pivot shaft part 4; the second member 2 is disposed so as to be free to perform an undulating pivoting motion with respect to the hinge base 3 via the second pivot shaft part 5; a first pivoting part 6 and second pivoting part 7 that pivot in a relative manner when performing an undulating pivoting motion are respectively disposed on the first pivot shaft part 4 and second pivot shaft part 5; and the first pivoting part 6 and second pivoting part 7 are connected by a connecting link part 17, so that the second pivoting part 7 is caused to perform a transmitted co-pivoting motion by this first pivoting part 6.

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First Claim