A portable information handling system rotationally couples housing portions with a variable torque hinge having a first axle that rotates with a first housing portion, a second axle that rotates with a second housing portion and a synchronizing gear assembly that translates rotation between the first and second axles. Variable torque is applied by selectively engaging and disengaging a coupler gear with the synchronizing gear assembly to apply and remove an increased torque that resists housing rotation. In one embodiment, the coupler gear is an idler gear of the synchronizing gear mechanism that selectively applies and removes an increase torque of the second axle to the first axle. The coupler gear slides in response to an actuator, such as an electro-permanent magnet acting on a ferromagnetic material with high and low magnetic attraction states.

A pivot device invention includes a base and a translating unit. The base includes a side having first and second connecting portions. The translating unit includes a first sliding seat, a pivot, a first wheel, a second wheel, and a first interlink. The sliding seat is mounted to the first connecting portion and is movable relative to the base. The pivot and the second wheel are pivotably mounted to the sliding seat. The first wheel is mounted to and jointly rotatable with the pivot. Rotation of the first wheel is in an interlocking relationship with rotation of the second wheel. The first interlink is mounted to and jointly rotatable with the second wheel. The first interlink includes a first sliding portion mounted to the second connecting portion and movable relative to the base. Rotation of the first interlink actuates the sliding seat to move relative to the base.

The invention provides a semi-automatic hinge of a mobile terminal having an inward-foldable flexible screen, which comprises a middle U-shaped cover, a left support frame, and a right support frame, and the left support frame, the right support frame and the U-shaped cover are rotatably connected; a torsion mechanism is provided between the left support frame and the U-shaped cover, and the right support frame and the U-shaped cover. The invention also provides an inward-foldable flexible screen mobile terminal using the above hinge. The invention has a simple structure, can achieve the semi-automatic operation of opening and flattening and folding of the hinge, provides a better sense of operation experience, and can make the middle mechanism of the hinge not to be exposed after the hinge is closed and provide a space for accommodating the bending portion of the flexible screen.

An arm structure of an electronic device is provided. The arm structure includes an arm body, a first cam disposed on one side of the arm body and including a first hole into which at least a portion of a rotating shaft providing a folding operation of the electronic device is inserted, a peak and a valley being formed around the first hole, a second cam arranged side-by-side on a same axis as the one side of the arm body, spaced apart from the first cam, and including a second hole into which at least a portion of the rotating shaft is inserted, a peak and a valley being formed around the second hole, and a connecting part disposed on another side of the arm body and fastened with a rotating part providing rotation of the electronic device.

A rotation shaft assembly includes a first lock accessory, a second lock accessory, a rotation shaft, a driven member, and a torsion mechanism. The rotation shaft includes a first member and a second member that are rotatable relative to each other, where the first member is fixedly connected to the first lock accessory, and the second member is fixedly connected to the second lock accessory. The driven member is connected to the first member or the second member, and is configured to be driven to rotate by the first member or the second member. The torsion mechanism is at least provided at the driven member and is configured to provide torsion during rotation.

An example of a foldable display device includes a display panel having a first area, a second area, and a foldable area therebetween; a first support plate supporting the first area of the display panel; a second support plate supporting the second area of the display panel; a central support disposed under the foldable area of the display panel and configured to move vertically; a first peripheral support slidable while supporting the first support plate; a second peripheral support slidable while supporting the second support plate; and a hinge body disposed under the central support. The central support ascends toward the display panel during an unfolding operation and descends toward the hinge body during an in-folding operation. The first peripheral support and the second peripheral support move toward the central support during the unfolding operation, and move away from the central support during the in-folding operation.

Disclosed are an hinge structure including: a first housing, a second housing, a hinge, and a flexible display, the hinge structure includes: a first rotation part, a second rotation part, a fixing bracket, and a structure, the structure includes a first rotary shaft, a second rotary shaft, a first main gear formed in the first rotary shaft, a second main gear formed in the second rotary shaft, and at least one idle gear disposed between the first main gear and the second main gear, and the first gear may be geared with the first main gear, and the second gar may be geared with the second main gear, and a foldable electronic device including the same.

A shaft structure includes a carrier, a first mandrel, and a second mandrel. The carrier has a groove, a receiving space communicated with the groove, and two protruding portions. The two protruding portions protrude from an inner wall of the carrier, and the two protruding portions are located between the receiving space and the groove. The first mandrel has a first gear, a first rotation shaft, and a first connection shaft connected to the first gear and the first rotation shaft. The first gear is located in the receiving space. The second mandrel has a second gear, a second rotation shaft, and a second connection shaft connected to the second gear and the second rotation shaft. The second gear is configured to move in the receiving space and the groove.

The disclosure relates to a rotating component and a terminal device. The rotating component includes: a hinge bracket; a movable strip disposed on the hinge bracket, the movable strip including a first meshing portion facing toward the hinge bracket and a second meshing portion facing away from the hinge bracket. The rotating component further includes two rotating structures, where the first rotating structure is disposed on one side of the movable strip and meshed with the first meshing portion, and the second rotating structure is disposed on another side of the movable strip and meshed with the second meshing portion. When the movable strip moves, the two rotating structures rotate synchronously in opposite rotation directions.

The present invention relates to a door hinge system (10) for a pivoting door (30) of a domestic appliance (20), in particular for a pivoting oven door (30) of a cooking oven (20). The door hinge system (10) comprises a stationary hinge part (12) in arranged or arrangeable at or in a chassis of the domestic appliance (20). The door hinge system (10) comprises a pivoting hinge part (14) connected or connectable to the door (30). The door hinge system (10) comprises a driving device (16, 18, 22, 24) for driving the pivoting hinge part (14). The driving device includes at least one motor (16) coupleable to and decoupleable from the pivoting hinge part (14). The driving device (16, 18, 22, 24) is automatically controllable. The pivoting hinge part (14) is manually pivotable, if the motor (16) is decoupled from the pivoting hinge part (14).