Provided is a rotation transmission shaft unit that is easy to install and that can effectively transmit rotation at high rotational speed and high torque. Also provided are a transmission device and a test device that use the shaft unit and transmit high torque and high rotation over a long span.

A rotation transmission shaft unit that is easy to install and axially align and that can rotate at high torque and high speed is realized by providing bearings to both ends of a rigid cylinder and rotatably support, by using the bearings, a central shaft made of a fiber-reinforced resin. Stability of the axial position of the central shaft can be achieved simply by supporting the rigid cylinder of the shaft unit, and since the rotation transmission shaft unit is a unit, it is easy to attach in and detached from an installation position and is easily centered with respect to the axis of a rotating machine, and because rotation can be transmitted over a long span, the speed of a motor test bench and an EMC test device can be increased.

According to an embodiment of the present disclosure, an electronic device may comprise a first housing including a first surface and a second surface facing in a direction opposite the first surface, a second housing including a third surface and a fourth surface facing in a direction opposite the third surface, a hinge disposed between the first housing and the second housing configured to provide rotational motion between the first housing and the second housing, and a flexible display disposed from the first surface of the first housing across the hinge to the third surface of the second housing, at least part of the flexible display configured to form a curved surface as the hinge structure is folded, wherein the hinge may include dual-axis hinges configured to provide a first rotational axis allowing the first housing to rotate about the second housing and a second rotational axis allowing the second housing to rotate about the first housing and slides coupled with the first housing and the second housing and configured to provide sliding motion perpendicular to a lengthwise direction of the first housing and the second housing.

A control apparatus includes a constant storage portion that stores constant values of an electromagnet coil including a resistance value Rm, an inductance Lm, a sampling time Ts, etc. A current storage portion stores previous current command values Ir having been regularly sampled by a microcomputer inside a current control circuit. A low-frequency feedback circuit generates a signal for suppressing an error between DC components and low-frequency components of an input current command value Ir and a detected current value IL and outputs the signal. An output voltage computing circuit calculates, based on the input current command value Ir[n+1], a stored value Ir[n] of the current storage portion, a stored value of a constant storage portion, and the signal of the low-frequency feedback circuit, a voltage for suppling the electromagnet coil with a current in accordance with a command, and outputs the calculated voltage.

An electronic device includes a display, and a hinge assembly foldable together with the display and corresponding to a folding area of the display. The hinge assembly includes a hinge bracket defining first and second hinge axes, first and second rotators connected to the hinge bracket and respectively rotatable about the first and second hinge axes, first and second sliders connected to the hinge bracket, respectively slidable relative to the hinge bracket in a direction parallel with the hinge axes, and spaced apart from each other in the direction, and an elastic member between the first and second sliders and providing an elastic force in the direction. The first and second rotators respectively include first and second helical structures having a helical shape with the first and second hinge axes as a center, and are each connected to the first and second sliders through the first and second helical structures.

The invention relates to an articulated robot arm (1) which comprises a plurality of trapezoidal truncated cylinders (2) disposed in succession around an internal holding member (4), each trapezoidal truncated cylinder (2) being configured to pivot about the internal holding member (4), the internal holding member (4) having angular control means for controlling the rotation of each trapezoidal truncated cylinder (2).

Solar panel assemblies and wall sections using such assemblies are described. In one solar panel assembly, there is a mounting post and three or more triangular shaped panels. Each triangular shaped panel is a solar panel responsive to a first spectrum of light and transparent to a second spectrum of light. The solar panel assembly also includes hinges which connect the triangular shaped panels to the mounting post. The at least three triangular shaped panels can move between a flat configuration and an inverted pyramid configuration. In a further embodiment of the solar panel assembly, the triangular shaped panels form a first solar panel layer, and the assembly also includes one or more additional solar panel layers. Each of the additional solar panel layers being responsive to an associated spectrum of light.

A slide rail assembly includes a first rail, a second rail and a working member. The first rail includes a blocking feature. The second rail is movable relative to the first rail. The working member is configured to be switched between a first state and a second state and includes a first blocking part and a second blocking part. When the second rail is located at an extension position and the working member is in the first state, the first blocking part corresponds to the blocking feature. When the working member is operated to be in the second state, the second blocking part corresponds to the blocking feature, to allow the second rail to be moved from the extension position to a predetermined position, in order to keep a distance between a front part of the second rail and a front part the first rail.

A resettable cutout sectionalizer uses a modified trunnion member including a bridge and a modified cutout hinge including at least one blocking flange. One actuated, the spring-loaded sectionalizer latching pin actuates to free the sectionalizer which is rotated open by the rotation of the trunnion. The trunnion rotates open and then is blocked from further rotation in a first direction by the bridge contacting the blocking flange(s) of the cutout hinge. To reset the device, the sectionalizer body is rotated against the blocking flange which causes the latching flange of the trunnion to cam against the latching pin to overcome the spring bias and push it back into the reset position.

A cable gland includes a bushing. The bushing may include a rib on an interior surface of the bushing to facilitate sealing and gripping of a cable received in the cable gland. The bushing may comprise or be formed from a silicone rubber material.

A slide rail assembly includes a first rail, a second rail movable with respect to the first rail, and a cable management device. The cable management device includes a first set of arms and a second set of arms connected to the first set of arms. The first set of arms include two arms that are movable with respect to each other. The second set of arms also include two arms that are movable with respect to each other. The cable management device has a portion connected to the first rail and is switched from a first state to a second state in response to the second rail moving with respect to the first rail from a first position to a second position.