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15results about How to "Increase damping" patented technology
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hinge assembly, folding housing and electronic devices
ActiveCN117628044Bincrease dampingreduce volumeDigital data processing detailsCasings/cabinets/drawers detailsStructural engineeringElectric devices
This invention provides a rotating shaft assembly, comprising a base, a first rotating mechanism, a second rotating mechanism, and a damping mechanism. The first rotating mechanism is rotatably connected to one side of the base; the second rotating mechanism is rotatably connected to the opposite side of the base. The damping mechanism includes a stop member slidably connected to the base and a first elastic member. The first rotating mechanism and the stop member are rotatably connected via a first arcuate rail and a first arcuate groove. The second rotating mechanism and the stop member are rotatably connected via a second arcuate rail and a second arcuate groove. The axis of the first arcuate groove is parallel to the axis of the second arcuate groove. The first elastic member has a pre-elastic force that causes the stop member to abut against the first rotating mechanism and / or the second rotating mechanism. This invention also provides a folding housing and an electronic device.
Owner:GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
Mobile device stylus
ActiveCN224399830Uavoid resistanceincrease dampingInput/output processes for data processingMobile deviceTesting Methods
A mobile device stylus includes a coupling portion couplable to a face of a mobile device, a support portion connected to a portion of the coupling portion, and a contact portion to contact a screen of the mobile device to operate the mobile device, an end of the contact portion connected to the coupling portion, wherein the coupling portion is a ring structure, a non-circular ring structure, or a non-enclosed ring structure.
Owner:SENSEAGE CO LTD +1
Design method of virtual additional stability controller for phase-locked synchronous grid-connected vsc
The application discloses a design method of a virtual additional stability controller of a phase-locked synchronization type grid-connected VSC and belongs to the technical field of phase-locked synchronization, comprising the following steps: designing a stability controller composed of a direct-current isolation link, a lead-lag and a proportional coefficient, defining an angle of operation as an included angle of an output current and an equivalent current of a power grid, taking the angle of operation as an input of the stability controller and taking an additional q-axis voltage of a grid-connected point as an output, establishing a Heffron-Philips model based on the defined angle of operation to obtain a feedback branch transfer function from the angle of operation to power, calculating a lag angle caused by the feedback branch transfer function from the angle of operation to power according to a sub-synchronous oscillation frequency of the phase-locked synchronization type grid-connected VSC, realizing compensation of negative damping caused by the lag angle of the negative feedback branch, thereby improving damping of the phase-locked synchronization type grid-connected VSC and enhancing synchronization stability of the phase-locked synchronization type grid-connected VSC, and thus solving the technical problem that the existing phase-locked synchronization type grid-connected VSC has low synchronization stability and is prone to sub-synchronous oscillation.
Owner:HUAZHONG UNIV OF SCI & TECH +1
Hinge mechanism and electronic device
Owner:VIVO MOBILE COMM CO LTD
Seal method for dynamic docking at sea based on multi-modal perception of sea conditions
The application discloses a kind of based on sea condition multimodal perception's offshore dynamic docking sealing method, obtains propagation path parameter and calculates initial fluctuation index, obtains the deviation value sequence corresponding to path fluctuation;Get the corrected attitude vector;By weighted fusion method, reduce the credibility weight of corresponding direction data, and recalculate overall credibility distribution;Determine the optimized attitude vector;Judge whether path fluctuation is stable, if unstable then iteration updates deviation value sequence;Get final position attitude calculation result, for the correction of docking position deviation, output accurate docking instruction sequence.The application enhances the buffering and absorption capacity of equipment to external impact, prevents rigid collision and sealing failure caused by sudden surge or flow field pulsation, improves the safety, flexibility and sealing reliability of offshore dynamic docking.
Owner:LUDONG UNIVERSITY
Additive Manufacturing-Based Inertial Amplification Nonlinear Low-Frequency Vibration Isolation Metamaterial Structure, Isolation Device, and Performance Control Method
PendingCN122083091AAmplify inertial effectsImprove low frequency vibration isolation performanceAdditive manufacturing apparatusShock absorbersLongitudinal waveEnergy absorption
This invention discloses an additive manufacturing-based inertial amplification nonlinear low-frequency vibration isolation metamaterial structure, vibration isolation device, and its performance control method. The vibration isolation metamaterial structure includes a rhombic frame structure, an inertial amplification unit, and a square spring structure. The square spring structure is arranged within the rhombic frame structure, with its two ends connected to a pair of opposite corners of the rhombic frame structure. The elastic extension direction of the square spring structure is parallel to the diagonal of this pair of opposite corners of the rhombic frame structure. The inertial amplification unit has a centrally symmetrical structure, including a rigid rod, two counterweights, and two diagonal rods. The center of symmetry of the inertial amplification unit, the center of the rhombic frame structure, and the center of the square spring structure all coincide in projection. Therefore, the vibration isolation metamaterial structure of this invention significantly widens the bandgap range and enhances low-frequency vibration isolation performance, exhibiting excellent performance in suppressing longitudinal waves in the 0-1000Hz low-frequency range, increasing vibration damping, and energy absorption.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Lightweight composite material anti-collision beam and preparation method thereof
PendingCN122077849AImprove the impact energy absorption effectImprove the problem of brittle fractureDomestic articlesBumpersPost collisionEnergy absorption
The invention relates to a lightweight composite material anti-collision beam and a preparation method thereof. Comprising the following steps that a cavity of a composite material anti-collision beam shell is partially filled with foam materials or completely filled with the foam materials with different densities, a filling layer with density changes is formed in the composite material anti-collision beam shell, the foam materials are cured, and the lightweight composite material anti-collision beam is obtained. According to the preparation method of the lightweight composite material anti-collision beam, pseudo-plastic failure energy absorption of the composite material anti-collision beam is realized, so that the technical problems that an existing composite material anti-collision beam is prone to layering and tearing after collision and cannot fully absorb collision energy, and then brittle fracture of the anti-collision beam is caused are solved.
Owner:SINOMA SCI & TECH
Anti-shock dowel device
The utility model relates to bridge damping technical field, concretely relates to a kind of anti-seismic mortise and tenon device, including mass block, and the one end of mass block along first direction is provided with damping support;Two sides of mass block along second direction are respectively provided with connecting beam;Upper mortise and tenon, upper mortise and tenon are connected to at least one side wall of mass block along third direction, and the one end of upper mortise and tenon along first direction towards damping support is provided with mortise groove;Lower mortise and tenon, the one end of lower mortise and tenon close to upper mortise and tenon is provided with tenon head, and tenon head is embedded mortise groove, and tenon head and mortise groove between filling have viscoelastic material;The one end of lower mortise and tenon away from upper mortise and tenon is used to and the bottom plate of box girder connection.The utility model can overcome the existing damping mortise and tenon device only simple concave-convex cooperation is used and is installed in box girder side or beam end, leading to upper mortise and tenon and lower mortise and tenon permanent deformation is prone to occur even structural damage, and the technical problem of low energy consumption efficiency.
Owner:HAINAN UNIV +1
Upper limb rehabilitation training device
ActiveCN224388004Uincrease dampingFlexible adjustment of dampingFrictional force resistorsPhysical therapyUpper limb rehabilitation
The utility model provides an upper limb rehabilitation training device, include: support mechanism, gripping mechanism and damping adjusting mechanism, wherein, support mechanism includes first casing, gripping mechanism includes fixed link and two opposite setting handle of fixed link both ends, the middle part of fixed link is provided with pivot, pivot rotatory connection in first casing, with gripping mechanism can rotate relative to support mechanism, damping adjusting mechanism includes damper, movable frame and first drive part, damper is at least partial cover and set in pivot, movable frame is connected in damper far from one side of pivot, first drive part is connected in movable frame, first drive part is used for driving movable frame far from or close to pivot, with adjusting the extrusion force between damper and pivot and adjusting the damping when gripping mechanism rotates relative to support mechanism.
Owner:泰康保险集团股份有限公司 +1
Foamed ceramic composite machine tool bed integrated with cooling channels
ActiveCN224406939UUniform temperatureStrong active temperature control capabilityTemperature controlCeramic composite
The utility model provides a kind of foamed ceramic composite machine bed of integrated cooling runner, including foamed ceramic pedestal, reinforcing rib, workbench, the inside of foamed ceramic pedestal is equipped with the hole structure of net-like distribution, hole structure includes rib hole and runner hole, rib hole is used to fill reinforcing rib, runner hole constitutes cooling medium passage;Runner hole inner wall is equipped with sealing layer, runner hole is equipped with medium inlet and medium outlet on foamed ceramic pedestal side wall;Reinforcing rib is filled in the inner wall of rib hole, and is integrated with foamed ceramic pedestal solidification, form built-in reinforcing framework;Workbench is fixedly arranged on the upper surface of foamed ceramic pedestal, and workbench is integrally connected with reinforcing rib at the orifice of rib hole.This foamed ceramic composite machine bed of integrated cooling runner has active temperature control capability, and has the advantages of lightweight, strong vibration absorption and damping capacity, high structural strength, good dimensional stability.
Owner:FUJIAN TIETUO MACHINERY
A low-noise fan for air-cooled coolers
This utility model discloses a low-noise fan for an air-cooled cooler, including a noise-reducing shell and a fan box. The noise-reducing shell has a carbon fiber reinforced plastic layer inside, and a titanium alloy sheet is placed on the inner wall of the carbon fiber reinforced plastic layer. A fiberglass sheet is placed on the inner wall of the titanium alloy sheet. The upper end of the noise-reducing shell has mounting holes. This low-noise fan for an air-cooled cooler uses a snap-fit connection between the mounting holes and mounting rods to facilitate the assembly of the cover frame. The connecting mesh provides some protection against debris while ensuring that the airflow speed is not affected. The snap-fit structure also facilitates the disassembly, cleaning, and replacement of the connecting mesh, ensuring its cleanliness. The carbon fiber reinforced plastic layer has high damping performance, with a damping ratio of over [value missing], which can quickly attenuate vibration energy, thereby reducing noise. The titanium alloy sheet adjusts the material's natural frequency to avoid the excitation frequency, reducing resonance noise.
Owner:WUXI MODERN HYDRAULIC CO LTD
Dynamically pressure-adaptive corrugated diaphragm pressure sensor
PendingCN122074932Aimprove consistencysmooth transitionCatheterSensorsMiniaturizationBiocompatibility
This invention relates to the field of implantable pressure sensors and discloses a corrugated diaphragm pressure sensor with dynamic pressure adaptation. It includes a sensor housing and a built-in corrugated diaphragm assembly. The corrugated diaphragm assembly comprises a corrugated diaphragm body, a gradient composite layered structure, and a built-in damping adjustment unit. The corrugated diaphragm body has a non-uniform corrugated parameter structure, divided into at least two regions with different parameters along the radial or circumferential direction. The gradient composite layered structure is composed of at least two layers of materials with different elastic moduli. The damping adjustment unit is located on the back of the diaphragm or in the corrugation gaps and can adjust the damping according to the transient rate of dynamic pressure change. This invention achieves adaptation to the dynamic physiological pressure of the human body, possesses miniaturization and high biocompatibility, and solves the problems of narrow dynamic response range and high detection distortion rate of traditional implantable sensors.
Owner:北京卷起袖子科技有限公司
High-elastic damping composite asphalt material as well as preparation method and application thereof
PendingCN122080656Aincrease dampingImproved vibration absorption performanceBuilding insulationsEnergy technologyRoad engineering
The invention discloses a high-elastic damping composite asphalt material as well as a preparation method and application thereof, and belongs to the crossing field of road engineering and a new energy technology. The high-elastic damping composite asphalt material is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 4.4 to 4.6 parts of rock asphalt, 4.3 to 8.2 parts of rubber and 5.3 to 5.5 parts of SBS (Styrene Butadiene Styrene) modifier. The high-elastic damping composite asphalt material has high-temperature stability, high damping performance, vibration absorbability, low-temperature toughness and environmental durability, stress buffering and energy dissipation of a photovoltaic structure system can be achieved, load damage to a photovoltaic module is effectively relieved, the fatigue resistance and vibration reduction capacity of a photovoltaic road are remarkably improved, and the service life of the photovoltaic road is prolonged. And thus, the overall service performance and life cycle of the photovoltaic road are remarkably improved.
Owner:TSINGHUA UNIVERSITY +1
Foamed ceramic composite machine tool body with flow channel and rib hole separated in layers
ActiveCN224406938UUniform temperatureStrong active temperature control capabilityTemperature controlCeramic composite
This invention provides a foamed ceramic composite machine tool bed with layered isolation between flow channels and ribs. It includes a foamed ceramic base with an internal channel structure comprising a cooling layer and a reinforcing layer. The cooling layer is located above the reinforcing layer, and the cooling layer and reinforcing layer are completely isolated by a solid foamed ceramic partition. The cooling layer contains multiple horizontally parallel flow channels, each with a sealing layer on its inner wall. The flow channels also have media inlets and outlets on the sidewalls of the foamed ceramic base. The reinforcing layer contains horizontal and vertical slots arranged in a three-dimensional mesh pattern. Reinforcing ribs fill these slots and are integrally formed with the foamed ceramic base, creating a built-in reinforcing skeleton. This foamed ceramic composite machine tool bed offers advantages such as strong active temperature control, no interference between the flow channels and the skeleton, simple manufacturing process, lightweight design, strong vibration absorption and damping capabilities, high structural strength, and good dimensional stability.
Owner:FUJIAN TIETUO MACHINERY
A gearbox alloy bracket structure with vibration-damping connection
ActiveCN224283309UHigh damping characteristicsSimple structureRubber-like material springsLow internal friction springsStructural engineeringHoneycomb like
This utility model relates to the technical field of gearbox alloy bracket structures and discloses a gearbox alloy bracket structure with anti-vibration buffer connection. The structure includes an alloy bracket with a honeycomb-shaped buffer layer at its top. The honeycomb cells of the buffer layer are filled with high-damping rubber. First and second mounting holes are respectively provided at both ends of the alloy bracket, and a third mounting hole is provided in the middle. All three mounting holes pass through the honeycomb-shaped buffer layer. A stacked damping plate is provided at the bottom of the alloy bracket. This utility model, by using the honeycomb-shaped buffer layer and high-damping rubber, utilizes the inherent flexibility and damping of the honeycomb structure. The high-damping rubber further absorbs vibration energy and converts it into heat energy, significantly improving the damping characteristics of the bracket itself and reducing the outward radiation and transmission of vibration.
Owner:SUZHOU KANGSUO ELECTROMECHANICAL CO LTD