39results about How to "Avoid Metal Fatigue" patented technology

A RF MEMS switch comprising a crossbeam of SiC, supported by at least one leg above a substrate and above a plurality of transmission lines forming a CPW. Bias is provided by at least one layer of metal disposed on a top surface of the SiC crossbeam, such as a layer of chromium followed by a layer of gold, and extending beyond the switch to a biasing pad on the substrate. The switch utilizes stress and conductivity-controlled non-metallic thin cantilevers or bridges, thereby improving the RF characteristics and operational reliability of the switch. The switch can be fabricated with conventional silicon integrated circuit (IC) processing techniques. The design of the switch is very versatile and can be implemented in many transmission line mediums.

The invention discloses a precise instrument placement box. The precise instrument placement box comprises an outer box and an inner box, wherein the outer box is connected with inner box by elastic ropes and elastic members; both of the elastic ropes and the elastic members are horizontally or vertically arranged; eight elastic ropes and four elastic members are provided; the single elastic member is located between two elastic ropes, and one group is formed according to the structure and fixedly connected with the outer box and the inner box respectively; the inner box is further filled with a buffer layer. The precise instrument placement box is capable of preventing the elastic members from generating metal fatigue while protecting for a long time.

In a plasma display module, a flexible substrate is strengthened and a mounting structure for alleviating stresses is provided, thereby preventing the metal fatigue of wirings. In a PDP (Plasma Display Panel) module, a metal plate and a flexible substrate constituting a driver module are provided. On the flexible substrate, wirings not connected to electrodes of the panel (independent linear patterns) are disposed on an outer side of wirings and near an edge portion of the metal plate to which the flexible substrate is attached.

The invention relates to an oil bath feeder controller which comprises a motor continuous and reversing rotation control circuit, wherein the motor continuous and reversing rotation control circuit comprises five relays and a microcontroller. The microcontroller controls the five relays to control the motor continuous rotation and the motor reversing rotation; the five relays are connected with a reverse electromotive force absorbing circuit and a relay contact mechanical interlocking circuit, wherein the reverse electromotive force absorbing circuit is used for inhibiting the reverse electromotive force, and the relay contact mechanical interlocking circuit is used for controlling the motor to be either in a continuous rotation state or in a reversing rotation state. The oil bath feeder controller replaces the application of an alternating current contactor in a traditional controller with the relay and the PCB wire arrangement can be adopted so that volume of the controller is greatly narrowed, and cost is reduced. The microcontroller controls the relays to realize motor continuous rotation and reversing rotation, so that relay contact damage and motor shaft fracture caused by motor instantaneous state switch can be avoided.

An embodiment of the invention provides a light modulator pixel unit and a manufacturing method thereof. The light modulator pixel unit comprises that: an interlayer dielectric layer positioned on a substrate; a cavity in the interlayer dielectric layer; a bottom electrode, a movable electrode and a top electrode which are in the interlayer dielectric layer and have positions corresponding to the position of the cavity; an optical filter which is on the top electrode and is used for converting white light into three-primary-color light. The movable electrode has a light reflecting surface, and the top electrode is a semi-transparent metal film. By utilizing movement of the movable electrode in the cavity, a light modulator can carry out modulation on the three-primary-color light after conversion by the optical filter. The embodiment of the invention solves a problem that a present light modulator pixel unit generally needs to utilize monochromatic light emitted by a monochromatic light source as incident light, and cost of the light modulator pixel unit is reduced.

The invention relates to the technical field of building facilities, in particular to a magnetic force buffer device. The magnetic force buffer device comprises a top pressing block, a bottom supporting plate, a plurality of sets of first magnetic stripes, second magnetic stripes, positioning screw rods and positioning nuts. The top pressing block is located above the bottom supporting plate. Thecross section of the top pressing block and the cross section of the bottom supporting plate are both in a U shape. The top pressing block and the bottom supporting plate are arranged in a matched mode. The first magnetic stripes and the second magnetic stripes are fixed into a recessed cavity of the top pressing block and a recessed cavity of the bottom supporting plate correspondingly. The samemagnetic poles of the first magnetic stripes and the second magnetic stripes are opposite, and thus magnetic repulsive force is formed. The first magnetic stripes and the second magnetic stripes are fixed into the device through the positioning screw rods. The top pressing block is suspended on the bottom supporting plate under the lifting action of the magnetic repulsive force and the limiting action of the positioning screw rods. A lifting space area is formed between the first magnetic stripes and the second magnetic stripes. According to the magnetic force buffer device, the magnetic stripes with the same magnetic poles being opposite are evenly arranged, the magnetic repulsive force is used for replacing elastic force, stable fixation is conducted, the problem of metal fatigue causedby using of elastic parts is avoided, and the stress of the device is stable on the whole.

The invention relates to the technical field of waste collection, and discloses a slow descending device of a dustbin cover. The slow descending device comprises a motor, a master control device and an angle sensing device; the motor is used for being in driving connection with the dustbin cover; the master control device controls forward and backward rotation and braking of the motor; the angle sensing device is used for sensing the rotation angle of the dustbin cover; and the angle sensing device is in communication connection with the master control device, when the dustbin cover is closedto a preset angle, the master control device controls the motor to brake so that the dustbin cover drives the motor to rotate to a closed position. In this way, slow descending of the intelligent dustbin cover is achieved, mechanical structure is reduced, the problems of metal fatigue and rust of a spring in a damping structure are avoided, meanwhile, the structure of the dustbin is more simple, and the size is smaller.

The invention relates to a high-efficiency superheater which is arranged in a superheating flue and comprises a first-stage heating flue and a second-stage heating flue sleeving outside the first-stage heating flue, wherein the first-stage heating flue comprises a flue gas channel A; heat exchange fins A are arranged in the flue gas channel A; an annular heating chamber A is formed in the outer wall of the flue gas channel A; the second-stage heating channel comprises an annular heating chamber B; an annular flue gas channel B is arranged between the inner wall of the annular heating chamber B and the outer wall of the annular heating chamber A; the annular heating chamber B and the annular heating chamber A are communicated through a plurality of connecting pipes; a conical groove is formed in one side, toward the superheating flue, of the superheater; the axis of the conical groove is coaxial with the flue gas channel A; the bottom surface edge of the conical groove is positioned in the outer wall surface of the annular heating chamber B. A dividing wall type heat exchanger with an annular structure replaces an original dividing wall type heat exchanger with an array pipeline structure, so the flowing resistance of high-temperature flue gas flowing in the superheater is reduced.

The invention discloses a shock absorption type physical distribution trolley with a goods clamping and fixing function. The shock absorption type physical distribution trolley includes a curved bottom frame. The middle of the curved bottom frame is connected with a shock absorption horizontal beam in a welding mode. The right end of the curved bottom frame is connected with a pushing rod supporting frame in a welding mode. The lower surface of the curved bottom frame is connected with a universal wheel rotation frame in a welding mode. The upper surface of the curved bottom frame is connectedwith a supporting rod in a welding mode. The front surface of the side wall of the universal wheel rotation frame is connected with a shock absorption ring protection cover in a welding mode. The universal wheel rotation frame is internally provided with a shock absorption ring inner cavity. The inner surface of the shock absorption ring inner cavity is connected with six flexible springs evenlyin a welding mode. Through an arch structure on the curved bottom frame and by using toughness of metal, part of bumpy impacting force is absorbed. Meanwhile, the bumpy impacting force is absorbed inan assistant mode. A shock absorption ring on the outer part of a rolling wheel rotation shaft absorbs bump from the rolling wheel. And meanwhile, a restraining rod between bearing plates makes the flexible springs bear the impacting force simultaneously, and the problem that only one spring bears force and has metal fatigue is prevented.

The embodiment of the invention provides an MEMS (Micro Electro Mechanical System) optical modulator pixel unit and a making method thereof. The optical modulator pixel unit comprises a cavity positioned in an interpoly dielectric layer, a movable electrode positioned in the cavity, a top electrode positioned on the cavity, a bottom electrode positioned below the cavity, and a filter arranged on the top electrode, wherein the optical modulator pixel unit is used for modulating white light by using a light diffraction principle. The embodiment of the invention solves the problem that the traditional optical modulator pixel unit commonly utilizes a single-color light source to send single-color light rays to be used as incident light rays, thus the cost of the optical modulator pixel unit is reduced.

The invention relates to the field of solid rocket engines, and discloses a flexible joint used at wide temperature range. The flexible joint comprises a front flange, a rear flange, multiple layers of elastic pieces and multiple layers of reinforcing pieces, and the front flange and the rear flange are connected through the multiple layers of elastic pieces and the multiple layers of reinforcing pieces; each elastic piece is made of an addition type liquid silicone rubber material; each reinforcing piece is made of a high-strength carbon/phenolic aldehyde composite material; the elastic pieces and the reinforcing pieces are both of a spherical annular sheet structure, and the multiple layers of reinforcing pieces and the multiple layers of elastic pieces are alternately bonded; and the shortest arc length of one reinforcing piece is larger than that of one elastic piece, and the portion, longer than one elastic piece, of one reinforcing piece is filled with dynamic sealing unvulcanized putty. According to the flexible joint used at wide temperature range and a flexible spray pipe, the stability and the safety performance of the elastic pieces and the reinforcing pieces are better, and better environmental adaptability is achieved.

Provided is a slider for a slide fastener, whereby several bodies can be obtained in one casting process and production costs can be reduced. A cover member (50) has a pair of right and left front-side engagement pieces (56) that engage with a front-side pillar section (30) and a pair of right and left rear-side engagement pieces (57) that engage with a rear-side pillar section (40). Front-side recessed sections for engagement (31) having a surface facing the upper surface of the front-side engagement pieces (56) are formed in the right and left side surfaces of the front-side pillar section (30); rear-side recessed sections for engagement (41) having a surface facing the upper surface of the rear-side engagement pieces (57) are formed in the right and left side surfaces of the rear-side pillar section (40); and the front-side and rear-side recessed sections for engagement (31, 41) are formed penetrating along the front-rear direction of the bodies (20).

The invention discloses a flight electric vehicle which comprises a frame, wheels, a storage battery pack, a speed regulation controller, wheel motors, a propeller motor and a movable wing. The frame, the wheels, the storage battery pack, the speed regulation controller, the wheel motors, the propeller motor and the movable wing are combined with one another to form the flight electric vehicle. The flight electric vehicle is characterized in that the wheels can be driven by the wheel motors of the flight pure electric vehicle, a propeller can be driven by an engine, the electric flight vehicle can independently move, the wing can be automatically unfolded and folded, and flight states of the wing can be operated and controlled by a triangular operating lever mounted in the middle of a main beam of the wing.

The invention belongs to the field of fog guns, and particularly relates to a fog gun air duct, a fog gun, a dust suppression vehicle and a spraying machine. The fog gun air duct comprises a duct body arranged in the front-back direction, a front impeller and a rear impeller are arranged in the duct body, the fog gun air duct further comprises a differential mechanism, the front impeller and the rear impeller are in transmission connection with two output shafts of the differential mechanism respectively, and a transmission shaft of the differential mechanism is connected with a driving device. The front impeller and the rear impeller form two-stage air supply in the duct body, it is guaranteed that the fog gun duct body has a large air outlet amount and a high air outlet speed, and water fog is sent to a long distance. The front impeller and the rear impeller are connected to the two output shafts of the differential mechanism, when air resistances borne by the front impeller and the rear impeller are different, the rotating speeds and torques of the front impeller and the rear impeller can be adaptively adjusted based on the actual resistance of surrounding air, the rotating speed of the front impeller is lower than that of the rear impeller, the load borne by the whole transmission structure composed of the impellers and the differential mechanism is uniform, metal fatigue caused by overlarge local load is avoided, and it is guaranteed that the fog gun air duct is more durable.