One end of first and second arms 30 and 40 are rotatably connected to a first hinge body 10 and a second hinge body 20, respectively. The other end of the first arm is guided by a second guide 25 of the second hinge body and the other end of the second arm is guided by a first guide 15 of the first hinge body. Friction torque is applied on the second hinge body by the friction plate 60. The first guide has a main guide portion 15x and a sub-guide portion 15y that is connected to an end of the main guide portion and draws an arc centered on the first shaft member. When the other end of the second arm is on the sub-guide portion, frictional resistance is not received, so that the second hinge body is automatically rotated by the urging member 70.

A door hinge with a damping function which is implemented according to the flow of oil when opening and closing a door so that a buffering force is applied during opening of the door, closing of the door is carried out smoothly. Due to rapid return of a damper unit, the damper unit immediately operates even when the door is closed immediately after being opened, thereby enabling smooth opening and closing of the door.

A door hinge with a damping function which is implemented according to the flow of oil when opening and closing a door so that a buffering force is applied during opening of the door, closing of the door is carried out smoothly. Due to rapid return of a damper unit, the damper unit immediately operates even when the door is closed immediately after being opened, thereby enabling smooth opening and closing of the door.

A hinge module includes a plurality of discs, a plurality of friction plates and a restraining member. The discs are eccentrically connected to each other. Each of the friction plates has a circular hole, each of the friction plates is rotatably disposed on one of the discs through the circular hole, and the friction plates contact each other. The restraining member is disposed on the friction plates.

A one-way braking hinge capable of self-aligning a shaft and a one-way clutch is provided. The one-way braking hinge (10) includes a first leaf (1), a shaft (3) rotatably supported by the first leaf (1), at least one resistance part (4) that resists rotation of the shaft (3), a second leaf (2) rotatably coupled to the shaft (3), a one-way clutch (12) into which the shaft (3) is inserted, and a position adjusting member (11) to which the one-way clutch (12) is fixed. The position adjusting member (11) is position-adjustably coupled to the second leaf (2).

A one-way braking hinge capable of self-aligning a shaft and a one-way clutch is provided. The one-way braking hinge (10) includes a first leaf (1), a shaft (3) rotatably supported by the first leaf (1), at least one resistance part (4) that resists rotation of the shaft (3), a second leaf (2) rotatably coupled to the shaft (3), a one-way clutch (12) into which the shaft (3) is inserted, and a position adjusting member (11) to which the one-way clutch (12) is fixed. The position adjusting member (11) is position-adjustably coupled to the second leaf (2).

A hinge capable of widely expanding includes an arc-shaped guide member, two movable members and two torsion generating members, wherein first guide rails are formed on two sides of the arc-shaped guide member, and a circular displacement track is defined by an arc center of the arc-shaped guide member. Each of the two movable members, respectively positioned on two sides of the arc-shaped guide member, is provided with a working surface contacting one of the first guide rails and an arc-shaped through hole penetrating therethrough. The arc center of the arc-shaped through hole is the same as the arc-shaped guide members'. Each of the two torsion generating members is assembled to the arc-shaped guide member through the arc-shaped through hole to which one of the two movable members belongs. The two movable members are guided by the arc-shaped guide member to move on the circular displacement track.

Friction hinge (21) for the pivotable connection of two components, comprising at least one first hinge sleeve (24) which is arranged in alignment with at least one further hinge sleeve (22), a shaft (11) which runs through the hinge sleeves (22, 24), and at least one friction spring for exerting a friction torque on the movable shaft (11), wherein at least two mutually aligned friction springs (10, 10′) are connected to the first hinge sleeve (24) via radial shoulders (16, 16′) and exert a friction torque on the shaft (11) mounted in the further hinge sleeve (22).

A portable information handling system includes a variable torque hinge that increases torque to resist hinge rotation when the information handling system housing rotates to a writing position, such as rotation to a range of between 300 and 350 degrees. In one embodiment, a sequential hinge rotates in the writing range about one axle that has increased friction in the desired writing range generated by a cam having a variable surface area and depth to work a variable friction between a friction structure and axle end cap.

A hinge comprises a first body and a second body irremovably rotatably coupled along a rotational axis of the hinge. The first body and the second body comprise opposing radial bearing surfaces engaged only within a working rotational range of the hinge for fixing the relative position of the first body and the second body in a radial direction with respect to the rotational axis of the hinge. The first body and the second body further define opposing axial bearing surfaces engaged only within the working rotational range of the hinge for fixing the relative position of the first body and the second body in an axial direction with respect to the rotational axis of the hinge. The opposing radial bearing surfaces and the opposing axial bearing surfaces are not engaged outside of the working rotational range.