HINGE DEVICE
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United States of America Patent
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N/A
Issued Date -
Feb 20, 2014
app pub date -
Feb 13, 2012
filing date -
Feb 17, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is a hinge device which, both before and after the change of friction torque, maintains the friction torque, and is prevented from axial lengthening. A shaft member is rotatably supported by a stationary-side bracket, a cam member is axially movable, with its rotation being restricted by the shaft member, a biasing element applies a bias in the direction toward the place where the cam member and the bracket contact each other to generate friction torque, and a convex portion and a concave portion are formed on the cam member and the bracket, respectively, to be fitted to each other. Either the convex portion and/or the concave portion is/are shaped such that the torque changes according to the rotation angle of the shaft member, and the biasing element has the inflection point of a spring constant between the maximum and minimum values of the torque.
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