A dual-axle hinge is provided. The dual-axle hinge includes a first shaft, a second shaft, a first fixing member, and a torque assembly. The first fixing member includes a first through hole, a second through hole, a first positioning hole, and a second positioning hole between the first through hole and the second through hole. The torque assembly includes a first torque adjustment portion, a second torque adjustment portion, a middle portion, a first positioning protrusion, and a second positioning protrusion. The first torque adjustment portion and the second torque adjustment portion are connected to two sides of the middle portion respectively, and the first positioning protrusion and the second positioning protrusion are disposed at the middle portion respectively and protrude toward the first positioning hole and the second positioning hole. The disclosure further provides an electronic device.

A friction hinge with its motion restricted in one pivoting direction includes a support member, a restricting module, and a pivot member. The restricting module is mounted on the support member. The restricting module has an air flow opening. The pivot member is pivotable relative to the support member and the restricting module. A regulating chamber is defined between the pivot member and the restricting module. When the pivot member is pivoted in one direction, a pressure in the regulating chamber is increased and the restricting module is actuated to reduce size of the air flow opening, increasing the resistance to pivoting of the pivot member in this pivoting direction.

Examples disclosed herein provide a hinge mechanism to pivotally connect housings of a computing device along an axis. As an example, the hinge mechanism includes a first guide rail fixed to a first housing of the computing device, a second guide rail fixed to a second housing of the computing device, and an intermediate guide rail to connect the first and second guide rails to each other. As an example, the hinge mechanism includes a rotation assembly linked to the first guide rail via a bell crank, wherein a rotational axis of the rotation assembly is offset from the axis, and the rotation assembly is to provide a level of resistance to a torque provided when opening or closing the first housing with respect to the second housing.

An apparatus can include a processor; memory accessible by the processor; a first housing that includes a first link end; a second housing that includes a second link end; and a hinge assembly that includes a first link coupled to the first link end via a first axle, a second link coupled to the second link end via a second axle and an intermediate axle that operatively couples the first link and the second link where stop surfaces of the first and second links define a minimum radius of curvature of the hinge assembly.

The description relates to hinged devices, such as hinged computing devices. One example can include a first portion and a second portion that have hinge ends rotatably secured relative to a hinge shaft. The example can also include a u-shaped friction arm extending from a first end positioned around the hinge shaft to a second end positioned around the hinge shaft and a pop-up assembly positioned along the hinge shaft between the first end and the second end and configured to create a bias to rotate the first and second portions away from one another.

A hinge module includes a first motion component, a second motion component, a third motion component, an axle module and a linking member. The second motion component has a pushing portion. The axle module includes a first axle and a second axle. The linking member is pivoted to the first motion component by the first axle, the second motion component and the linking member are pivoted to the third motion component by the second axle. When the second motion component is rotated from a first operation state to a second operation state, the second motion component props against the linking member by the pushing portion, such that the third motion component is driven to rotate by the linking member. When the second motion component continues rotating from the second operation state, the pushing portion is separated from the linking member.

A manhole includes a device for safely closing and locking the manhole, which has a cylinder with centering pins that is attached to a slab and is rotatable with an operating key acting on the pins, and further includes an anti-burglary block, which in locked position is positioned inside the cylinder and hides and protects an anti-theft bolt positioned inside a hole, which crosses the entire anti-burglary block and has a larger diameter at the front and the same diameter as the anti-theft bolt in the back, so as to receive the anti-theft bolt in a threaded spot in the inner wall of the cylinder and enable placement of the anti-theft bolt in the body of the anti-burglary block when totally tightened into the threaded spot, wherein the end of the anti-theft bolt, in closed position, is housed in a locking hole on a circular support of the cover.

A door support includes a first shaft coupled to a door for rotating the door; a first armature on the first shaft; a second shaft with at least one module that resists motion; a second armature on the second shaft; a linkage that connects the armature on the first shaft with the armature on the second shaft; a freewheel on the second armature or on the second shaft that does not engage the module that resists motion thereby allowing the door to open without resistance, the freewheel engaging as the door is closed to provide a resistance as the door is closed, and the linkage positioned such that as the door is nearly closed that the resistance becomes negligible allowing the door to fully close.

A flexible display device and an electronic device are provided. The flexible display device includes a flexible display panel, a rigid structure and a support structure. The support structure includes a set of support arms including a first support arm and a second support arm. The rigid structure is bent at a preset angle based on a combined state of the set of support arms so that the flexible display panel supported by the rigid structure is bent at a same angle as the preset angle. The combined state includes a first use state and a second use state. The first support arm and the second support arm are located on a same plane in the first use state. The preset angle is formed between the first support arm and the second support arm in the second use state.

A convenience interface device is provided for personnel to access devices that reside inside an enclosure without opening the enclosure door. The convenience interface device includes a housing, a cover assembly comprising a cover and a cover receiving frame operatively connected to the housing, a first metal insert and a first magnet for magnetically connecting together, one of the first metal insert and the first magnet on one of the cover or the receiving frame and the other of the first metal insert and the first magnet on the other of the cover or the receiving frame, and a second metal insert and a second magnet for magnetically connecting together, one of the second metal insert and the second magnet on one of the cover or the receiving frame and the other of the second metal insert and the second magnet on the other of the cover or the receiving frame.