Patent ID: 6421878
Filing Date: 2002-07-23
Classification: E05D,E05Y,G06F,Y10T

Abstract:
A tilting hinge for a portable computer having a body and a display screen, comprising:a fixture consisting of a fixing plate portion to be fixed to the body of the portable computer and a bearing plate portion bent perpendicularly to the fixing plate portion; a rotating shaft consisting of a fixing portion to be fixed to the display screen of the portable computer, a large-diameter portion and a small-diameter portion, and born relatively rotatably in a bearing hole formed in the bearing plate portion of the fixture; a first friction washer interposed between the large-diameter portion of the rotating shaft and one side of the bearing plate, the first friction washer being engaged with the rotating shaft on the bearing plate portion of the fixture; a second friction washer provided at another side of the bearing plate and engaged with the rotating shaft; an elastic assembly of a spring washer or spring washers, a belleville spring or belleville springs, a wave washer or wave washers, the elastic assembly being disposed to abut on the second friction washer; a set washer disposed to abut on the elastic assembly rotatably with the rotating shaft; a calked projection provided with an end portion of the small-diameter portion of the rotating shaft abutting on the elastic assembly; and torque changing means for changing torque, the torque changing means comprising a convexity or concavity formed on the bearing plate portion and the first or second friction washer on which there are formed a convexity or concavity opposite to the concavity or convexity on the bearing plate portion.