An accessory device for an electronic device is disclosed. The accessory device includes multiple sections, with one section holding the electronic device, and another section having an input mechanism, such as a keyboard. The accessory device includes a hinge assembly that allows relative movement of the sections with respect each other. An additional hinge assembly is integrated with the section carrying the electronic device, and provides additional flexibility and range of motion of the section, thereby allowing a user to position the electronic device at multiple different angles relative to the section carrying the input mechanism. Also, each hinge assembly may include multiple roller and spacer elements, as well as a retention structure passing through each roller element and spacer element. The retention structure can provide tension to increase the frictional force between the roller and spacer elements, and/or provide counterbalance to offset the weight of the electronic device.

An electronic device is disclosed. The electronic device may include: a body provided with a computing system; a hinge assembly adjacent to one side of the body and installed inside of the body; and a display part including a display panel for displaying a screen, wherein the display part is pivotable with respect to the body and is connected to the hinge assembly, wherein the hinge assembly may include: a hinge shaft; a first coupling part adjacent to one end of the hinge shaft, extended from an outer circumferential surface of the hinge shaft, and fixed to the display part; a second coupling part rotatably coupled to the hinge shaft and that is fixed to the body; and a foot plate pivotably coupled to the second coupling part and pivotable with the second coupling part according to the rotation of the hinge shaft.

An electronic device according to various embodiments disclosed herein may include a first housing, a second housing, and a hinge that foldably connect the first housing and the second housing, wherein the hinge may include a hinge bracket, a first arm coupled to the first housing, and a multi-link structure including a plurality of rotation shafts and a plurality of links connecting the plurality of rotation shafts and configured to rotatably connect the hinge bracket and the first arm to each other. Various other embodiments may be possible.

A foldable display device includes a first support plate and a second support plate, a display panel disposed on the first support plate and the second support plate and a hinge assembly disposed between the first support plate and the second support plate, wherein the hinge assembly includes, a first hinge arm and a second hinge arm rotatably connected to each other, a first virtual axis gear coupled to the first hinge arm, a second virtual axis gear coupled to the second hinge arm, a first rotational gear and a second rotational gear disposed to mesh with each other between the first virtual axis gear and the second virtual axis gear and a first gear arm and a second gear arm fastened to interlock with the first virtual axis gear and the second virtual axis gear, wherein the first support plate, the second support plate, and the display panel perform folding and unfolding operations about a rotation axis different from central axes of the first virtual axis gear and the second virtual axis gear.

An electronic device is provided. The electronic device includes a housing including first and second housings, a display including a first display region connected to the first housing and a second display region connected to the second housing, and a hinge module connected to the first housing and the second housing. The hinge module may include a rotation bracket including a first accommodation space providing a first rotation axis and a second accommodation space providing a second rotation axis, a rotation member including a first rotation member connected to the first display region and a second rotation member connected to the second display region, and a rail member including a first rail member connected to the first rotation member and configured to rotate in the first accommodation space, and a second rail member connected to the second rotation member and configured to rotate in the second accommodation space.

The pivot shaft structure moving around virtual axis includes an assembly of a main body, a first operation board and a second operation board disposed on the main body. The first operation board has an arm section. The second operation board has an arm section. The arm sections of the first and second operation boards are respectively received in a first arched rail and a second arched rail of the main body. The first and second arched rails are arched and disposed around a virtual axis. When a user operates the first operation board or the second operation board to move, the first operation board or the arm section thereof and the second operation board or the arm section thereof respectively synchronously move around the virtual axis along the first and second arched rails toward each other to achieve opening/closing effect.

A hinged dead front for an enclosure of an electrical panelboard, said enclosure defined by a rear panel, an operative left side panel, an operative right side panel and a door, wherein the rear panel of said enclosure is provided with hinged mounting bracket assemblies on which said dead front is hingeably mounted; and latch stopping bracket assemblies configured to engage with locking elements fitted on said dead front.

A rotating shaft mechanism (10) is provided, including a main bracket (1) and at least one rotating assembly (2). Each rotating assembly can rotate relative to the main bracket. The rotating assembly includes a rotating member (21), a middle frame (22), and a sliding member (23). The rotating member can be rotatably connected to the main bracket about the first rotation center, and the other end of the rotating member can be rotatably connected to the middle frame about the third rotation center. One end of the sliding member is hinged to the main bracket, and the sliding member can rotate relative to the main bracket about the second rotation center. The other end of the sliding member slidably coordinates with the middle frame, so that the middle frame is away from or close to the second rotation center along an extension direction of the sliding member.

A synchronous opening or closing thin hinge comprises a rotating part including a bracket and two arcuate movable members, and a torsion providing part providing a torque. Two tracks are provided on the bracket for the arcuate movable members which are formed with a guide groove to perform an arcuate trajectory displacement. The torsion providing part comprises two connecting rods displacing along the guide groove when the two arcuate movable members are displacing, two rotating shafts disposed in parallel and operated by the two connecting rods, and a swing member disposed between the two rotating shafts. The two rotating shafts are provided with a plurality of teeth. The swing member comprises two meshing parts meshing with the plurality of teeth. The two meshing parts engaging with different parts of the plurality of teeth as the two rotating shafts rotating, and the swing member swings between the two rotating shafts.

An electronic device, including a host, a main display, an auxiliary display, and a lifting mechanism, is provided. The main display is pivoted to the host. The auxiliary display is disposed on the host. The lifting mechanism is disposed between the auxiliary display and the host. The lifting mechanism is configured to lift the auxiliary display and maintain a lifting height of the auxiliary display.