Katoh Electrical Machinery Company, Ltd.

Hideya Tajima

Takayuki Kaneko

A biaxial hinge device, rotates a second member with regard to a first member around a first axis for opening and closing in a vertical direction, and rotates the second member with regard to the first member around a second axis in a horizontal direction. The hinge has a vertical direction rotation controlling mechanism of the second member having the first axis, and a horizontal direction rotation controlling mechanism of the second member having the second axis. A movable stopper is further mounted between a supporting member of the vertical direction rotation controlling mechanism and an attaching member of the horizontal direction rotation controlling mechanism, to which the supporting member is rotably attached. A rotation in a horizontal direction is therefore controlled within a range of predetermined angles, additionally further rotation in the same direction is available via pressing of the second member into the desired direction.

Biaxial hinge device of electrical equipment

To create a torque difference in a tilting hinge, the tilting hinge includes a fixture consisting of a fixing plate portion to be fixed to the body of a 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 a 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 having a through-hole formed in the center thereof and disposed between the large-diameter portion of the rotating shaft and one side of the bearing plate portion rotatably with the rotating shaft being inserted in the central through-hole or disposed in engagement with the bearing plate portion; a second friction washer having a through-hole formed in the center thereof and disposed fixed to the bearing plate portion with the rotating shaft being inserted at the small-diameter portion thereof in the central through-hole or rotatably 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, etc. each having a through-hole formed in the center thereof, the assembly being disposed to abut on the second friction washer with the rotating shaft being inserted at the small-diameter portion thereon in the central through-hole; a set washer having a through-hole formed in the center thereof and disposed to abut on the elastic assembly rotatably with the rotating shaft being inserted at the small-diameter portion thereof in the central through-hole; the rotating shaft having a to-be-calked projection, from the set washer, of the small-diameter portion thereof; and a torque controlling means for generating, axially of the rotating shaft at either of the sides of the bearing plate portion, a torque varying depending upon the angle of rotation of the rotating shaft.

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Kanagawa, Japan

Hideya Tajima