A rotating device and a rotating radar device. The rotating device comprises a fixed platform and a rotating platform; the top of the fixed platform and the bottom of the rotating platform are rotatably connected by a rotating shaft, a first bearing, and a second bearing; the rotating shaft is connected to the inner ring; the fixed platform includes a carbon brush and a first magnetic member; the rotating platform includes a second magnetic member and a rotor conductive ring; an outer ring of the first bearing is connected to the fixed platform; an inner ring of the second bearing is connected to the fixed platform, and an outer ring of the second bearing is connected to the rotating platform.

The disclosure relates to a pivot axle arrangement for providing the two structural elements are pivotally movable in relation to each other. The pivot axle arrangement comprises a first and a second axle spindle for holding an outer axle, a first and a second bearing element and the outer axle. The outer axle is formed as a hollow cyclinder. An inner axle is concentrically arranged in a longitudinal direction inside of the outer axle such that the inner axle extends between said first and second axle spindle. The ends of the inner axle are fastened to the first and second axle spindles by a first and second fastening means such that the first and second axle spindles are interconnected via said inner axle.

A power consumption control device includes: a voltage detection circuit configured to detect whether an input power supply of a magnetic levitation system to be controlled is turned off; and a comparison unit configured to detect an operating parameter of a motor of the magnetic levitation system during an operation of the motor as a generator, and compare the operating parameter with a set parameter to obtain a comparison result; a motor controller of the magnetic levitation system controls the motor of the magnetic levitation system to operate as the generator in a case that the input power supply is turned off, a bearing controller of the magnetic levitation system adjusts a magnitude of a bearing bias current of the magnetic levitation system according to the comparison result, to control a power consumption of a magnetic levitation bearing of the magnetic levitation system within a set range.

A hinge is provided. The hinge includes a first plate, a second plate, a third plate, a shaft, a first elastic element, and a second elastic element. The second plate is connected to the first plate. The third plate is disposed on the second plate. The shaft is connected to the first plate and the second plate. The first elastic element surrounds the shaft. The second elastic element is connected to the second plate and the third plate. The second plate is rotatable around the shaft via the first elastic element. The second plate is movable relative to the third plate via the second elastic element.

A pivot structure assembly including a fixed cover and a hinge module is provided. The hinge module includes a torque element, a first shaft, a second shaft, a first bracket and a second bracket. The torque element is fixed on the fixed cover and has a first and a second axle sleeves, parallely disposed at two opposite sides of the torque element. The first shaft is disposed through the first axle sleeve, and the second shaft is disposed through the second axle sleeve. The first bracket is pivotally disposed on the torque element through the first shaft, and the second bracket pivotally disposed on the torque element through the second shaft. When the first and second brackets rotate relatively to the torque element, the first and second axle sleeves respectively provide different friction forces to the first and second shafts. In addition, an electronic device is also mentioned.

A conical bearing member includes a communication hole communicating an inner peripheral surface and an outer peripheral surface of the conical bearing member, and the inner peripheral surface includes a press-fit region in contact with a shaft and an enlarged diameter region having a diameter greater than a diameter of the press-fit region and including an inner opening part of the communication hole. A tapered part having a diameter increasing toward the enlarged diameter region is provided at an end part of the press-fit region on the enlarged diameter region side.

A hard disk drive includes a base deck that is coupled to a cover, a motor assembly that is coupled to the base deck, and magnetic recording media that is coupled to the motor assembly. The motor assembly includes a magnetic bearing with a horizontal magnetic bearing component and a vertical magnetic bearing component.

A foldable device may include a foldable layer and a hinge system that is positioned between a first body and a second body of the foldable device. The hinge device may include a first hinge section and a second hinge section. The first hinge section and the second hinge section may include a rigid, planar body. A third hinge section may be positioned in a space between the first hinge section and the second hinge section. The third hinge section may include a rigid, contoured body.

A bearing housing structure (101) comprises a support section (102) for supporting a bearing (117), a reception interface (103) for receiving lubrication grease, and grease channels (104-106) for conducting the lubrication grease to both sides of the bearing which are mutually opposite in the axial direction of the bearing. The bearing housing structure comprises exit conduits (107, 108) for allowing the lubrication grease to exit the bearing from the both sides of the bearing and a grease reservoir (109) for storing the lubrication grease exiting the bearing via one or more of the exit conduits. The bearing housing structure is capable of operating in different positions so that the axial direction of the bearing can be horizontal, vertical, or slanting.

A flexure bearing includes an inner race, an outer race, and a plurality of substantially planar radially extending blades coupled between the inner and outer race. The blades have a thickness that is thinner than a thickness of the inner and outer races. The inner race, outer race, and blades have substantially the same height. At least one heating element is coupled to the inner race and/or the outer race. The heating element is configured to apply heat to the race that it is coupled to in order to tune the flexure bearing.