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276results about How to "Improve deformation" patented technology

Negative plate and battery

The invention relates to the field of batteries, in particular to a negative plate and a battery comprising the negative plate. The negative plate comprises a negative current collector, a bottom coating and a negative active material layer, the bottom coating and the negative active material layer are positioned on one side or two sides of the negative current collector, the bottom coating is positioned between the negative current collector and the negative active material layer, the bottom coating comprises a three-dimensional structure formed by a first conductive binder, the first conductive binder comprises a first carbon nano tube, and the first carbon nano tube comprises a second carbon nano tube. The negative plate meets the following relational expression: 1.2 < = B / K < = 3.4, B is the length-diameter ratio of the first carbon nanotube, and K is the tensile strength of the negative current collector. According to the negative plate, the thickness of the priming coat can be greatly reduced, and the energy density of the battery is increased; the binding power between the negative electrode current collector and the negative electrode active material layer can be enhanced, the structural stability of the active material layer can be improved, the pole piece deformation and powder falling in pole piece processing and battery circulation can be improved, and the circulation expansion can be inhibited; the conductivity of the pole piece is improved and the fast charging performance of the battery is improved.
Owner:ZHUHAI COSMX BATTERY CO LTD

High-temperature-resistant and high-impedance pressure-sensitive adhesive, supporting film and preparation method of supporting film

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-temperature-resistant high-impedance pressure-sensitive adhesive, a supporting film and a preparation method of the supporting film. A styrene-butadiene-styrene block copolymer (SBS) is used as a main body material, an acrylic copolymer with high carboxyl content is grafted in a solvent in a thermal initiation mode, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained after the high-temperature-resistant and high-impedance pressure-sensitive adhesive is compounded with tackifying resin, a curing agent and an antioxidant, and after optical-grade PET is coated with the high-temperature-resistant and high-impedance pressure-sensitive adhesive, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained. According to the novel supporting film, the polarity of the SBS main body material is low, the excellent electrical insulation performance is provided, the supporting film body has the characteristic of high impedance, and therefore the requirement for high impedance of the supporting film in a copper bar friction experiment is met; in addition, after the acrylic copolymer with high carboxyl content is grafted, a large number of crosslinking points can be provided, and the overall crosslinking degree is greatly increased after thermocuring, so that the high-temperature modulus of the adhesive layer is improved, and the adhesive layer is endowed with the characteristic of high-temperature deformation resistance.
Owner:SUZHOU SHIHUA NEW MATERIAL TECH

Device and method for adjusting film stress and process equipment of semiconductor device

The invention discloses a thin film stress adjusting device and method and process equipment of a semiconductor device. The adjusting device comprises a heating disc on which a wafer coated with a film on the front side is placed at intervals, and the surface of the heating disc is provided with a plurality of air outlet areas corresponding to a plurality of areas on the back side of the wafer; the controller is configured to respond to a first deformation area which is warped due to the stress of a first thin film on the front side in the wafer and output reaction gas from the gas outlet area below the first deformation area so as to deposit a second thin film on the first deformation area on the back side of the wafer, the second thin film provides downward tensile stress for the first deformation area. According to the invention, the problem of deformation of the coated wafer caused by the stress of the front film can be improved in a targeted manner, and the stability of the product is improved.
Owner:PIOTECH (SHANGHAI) CO LTD

Battery cell, battery device, and electric device

The invention provides a battery monomer, a battery device and a power utilization device. The battery monomer comprises a shell, an electrode terminal, an electrode assembly, a current collecting part and a first insulating part, the shell is provided with a first wall, and the electrode terminal is arranged on the first wall. The electrode assembly is contained in the shell and comprises an electrode body and a tab, and the tab is led out from the end, in the thickness direction of the first wall, of the electrode body. The current collector is arranged in the shell, electrically connected with the tab and the electrode terminal and provided with a welding part, and the welding part is connected with the electrode terminal in a welded mode. The first insulating part is arranged on the side, opposite to the electrode terminal, of the welding part and comprises a first part, the first part is arranged on the side, facing the electrode body, of the first insulating part, and the Young modulus E of the first part is larger than or equal to 0.5 MPa and smaller than or equal to 3 MPa. According to the battery monomer provided by the invention, the risk of damaging the electrode assembly by the first insulating part is reduced, the risk of short circuit in the battery monomer is reduced, and the reliability of the battery monomer is improved.
Owner:CONTEMPORARY AMPEREX TECHNOLOGY CO LTD

Carburizing and quenching process of thin-wall gear and clamping tool of thin-wall gear

The invention discloses a carburizing and quenching process of a thin-wall gear and a clamping tool of the thin-wall gear. The carburizing and quenching process comprises process parameters of temperature, time, flow, carbon potential, cooling speed and the like in stages of pre-cleaning, pre-oxidation, preheating, strong carburizing, diffusion, cooling, quenching, tempering and the like. It needs to be explained that in the technical process, the purpose of reducing the heat treatment deformation quantity of the thin-wall gear is achieved by optimizing the hanging and clamping mode of the thin-wall gear and improving the temperature and time parameters during carburizing and quenching in the scheme. Besides, a clamping tool suitable for the process is designed in the scheme, so that the clamping stability of the thin-wall gear during carburizing and quenching treatment is improved, and the heat treatment deformation quantity of the thin-wall gear is further reduced.
Owner:SHUANGHUAN DRIVING JIAXING PRECISION MFG CO LTD

Forming method of heat-proof layer with special-shaped structure

The invention discloses a special-shaped structure heat-proof layer forming method, and belongs to the technical field of composite material forming. The forming method comprises the following steps: preparing a first prepreg, cutting the first prepreg according to a first angle to obtain an inner-layer prepreg block, and cutting the first prepreg according to a second angle to obtain an outer-layer prepreg block; the inner-layer prepreg blocks are laid on the force bearing body layer by layer in a warp and weft staggered mode, the outer-layer prepreg blocks are laid on the inner-layer prepreg blocks layer by layer in a warp and weft staggered mode, and a large-area heat-proof layer laying layer set is obtained; preparing to obtain an edge heat-proof layer blank body; cutting off a thin-wall area on the edge heat-proof layer blank body; placing the edge heat-proof layer blank body after the thin-wall area is cut off on a mould pressing tool, laying a second prepreg in the area of the mould pressing tool corresponding to the cut-off part, and pre-pressing to obtain an edge heat-proof layer composite blank body; embedding the edge heat-proof layer composite blank body into the prepreg laying layer group to obtain a heat-proof layer blank body with a special-shaped structure; and performing curing treatment on the heat-proof layer blank with the special-shaped structure to obtain the heat-proof layer with the special-shaped structure.
Owner:HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL

Brake disc

The invention provides a brake disc which comprises a friction ring, a first connecting piece and a second connecting piece. A second connecting piece is annularly arranged on the outer ring of the disc cap, the first connecting piece and the second connecting piece are fixedly connected in the axial direction of the brake disc, the second connecting piece is provided with a plurality of interval parts and a plurality of abutting parts, the interval parts and the abutting parts are annularly arranged at intervals in the circumferential direction of the disc cap, and the abutting parts abut against the first connecting piece; the interval part is located on the side, facing the first connecting piece, of the second connecting piece, the first connecting piece and the second connecting piece form an interval in the axial direction of the brake disc through the interval part, and the second connecting piece can deform through the interval part. By means of the technical scheme, the problem that in the prior art, a split type brake disc is poor in thermal deformation performance can be solved.
Owner:YANTAI WINHERE AUTO PART MFG

Gas filtering device for glue processing

The invention belongs to the technical field of gas filtering, and particularly relates to a glue processing gas filtering device which comprises a treatment chamber, a gas inlet and a gas outlet are formed in the two ends of the treatment chamber respectively, a cavity for glue processing gas to pass through is formed in the treatment chamber, and an activated carbon filtering assembly is arranged in the treatment chamber. The device further comprises a collecting mechanism and a control mechanism. Glue processing gas is filtered through the activated carbon filtering assembly, the intercepting filter screen is arranged in the cavity of the processing chamber to intercept falling activated carbon particles, and after the intercepting filter screen is rotated, flowing gas can conduct back flushing cleaning on the intercepting filter screen, meanwhile, the activated carbon particles on the intercepting filter screen can be thrown out under the action of centrifugal force, and therefore the effect of cleaning the glue processing gas is achieved. And the activated carbon particles fall into the collecting bin through the collecting filter screen, so that the function of intercepting and collecting the activated carbon particles on line in the gas filtering process is achieved, shutdown treatment is not needed, and the working efficiency is improved.
Owner:GUANGZHOU KABLEE AUTO PARTS CO LTD

Watchcase clamp

The utility model discloses a watchcase clamp, which belongs to the technical field of meter processing, and comprises a first support piece and a second support piece, the first support piece is arranged on the second support piece, a clamping position is formed between the first support piece and the second support piece, and the clamping position is used for accommodating a watchcase; the watchcase is sleeved outside the first support member, and in the first direction, the first support member is used for abutting against the first end of the watchcase, and the second support member is used for abutting against the second end of the watchcase. In the first direction, the first supporting piece and the second supporting piece abut against the two ends of the watchcase respectively, so that the position of the watchcase on the clamping position is limited. The watchcase is supported by the first supporting piece and is sleeved outside the first supporting piece, so that the contact area between the watchcase and the first supporting piece is increased, the watchcase is prevented from being fixed in an inner supporting and outer clamping mode, the expansion force and the clamping force of the watchcase are reduced, and the local stress on the outer surface of the watchcase is reduced; the problem that the watchcase body is directly clamped by an existing clamp and the watchcase is deformed is solved.
Owner:ZHUHAI ROSSINI WATCH IND

Improved SPH fluid-solid coupling method

The invention provides an improved SPH fluid-solid coupling method, which is characterized in that a new protection limiter function is added into an RSPH continuous equation to adjust density diffusion and ensure global volume conservation, a threshold function is added to a diffusion term in a structural momentum equation, the precision, accuracy and stability of numerical calculation are improved, and the numerical oscillation phenomenon is reduced; the fluid and the structure interact in a two-way weak coupling mode, in an FSI coupling solver, firstly, fluid calculation is conducted with a structural domain as a boundary condition, and then an elastic structure is calculated through a pressure field of the fluid; considering the force balance between the fluid and the structure, and calculating the structure acceleration corresponding to the fluid-structure interaction force; time coupling is carried out in a consistent mode, the time steps of the fluid and the elastic structure are limited by CFL conditions so as to ensure the stability of numerical simulation and the capacity of capturing physical phenomena, and the stability of the elastic structure is enhanced by introducing schemes such as artificial viscosity, hourglass control force and artificial damping.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Wiring terminal of electric energy meter and electric energy meter

The invention provides an electric energy meter wiring terminal and an electric energy meter, and relates to the technical field of electric variable measuring instruments. According to the electric energy meter wiring terminal, the electric energy meter wiring terminal is assembled in the shell, the meter tail wire pressing hole is right opposite to the port, when an external wire is connected with the electric energy meter, the external wire is inserted into the port through the meter tail wire pressing hole, the wire cannot be cut when the external wire is locked, and the connection stability of the external wire and the electric energy meter is improved.
Owner:SHIJIAZHUANG KE ELECTRIC

Intelligent clamp for intelligent manufacturing production line and clamping method

The invention discloses an intelligent clamp for an intelligent manufacturing production line and a clamping method, and belongs to the technical field of clamps. According to the method, a body is of a cone frustum structure, the lower end of the cone frustum structure is connected with a connecting flange, and an annular shell is arranged on the periphery of the cone frustum structure; the circular truncated cone structure is provided with a bonding expansion sleeve for clamping a workpiece and a calibration piece, a pull rod and a piston for implementing measurement are arranged in the circular truncated cone structure, various circuits and related parts are arranged in the annular shell, and the flange is used for being connected with a machine tool. The clamp can achieve the purpose of accurately monitoring the machining state and the part clamping force in the precise machining process in real time.
Owner:XI AN JIAOTONG UNIV

Method for preparing pressureless sintered silicon carbide ceramic through gel injection molding

The invention relates to a method for preparing pressureless sintered silicon carbide ceramics through gel injection molding, and relates to the technical field of ceramics, the method comprises the following steps: adding an organic phase into water, stirring and dissolving to obtain an organic phase solution, adding a cross-linking agent, a dispersing agent, a defoaming agent and a suspending agent into the organic phase solution, and stirring to obtain a premixed solution; adding the powder into the premixed liquid, and stirring to obtain slurry; carrying out ball milling treatment on the slurry, carrying out defoaming treatment after ball milling, and carrying out vibration treatment during defoaming, so as to obtain defoamed slurry; adding a catalyst and an initiator into the defoamed slurry, stirring, pouring into a mold, forming to obtain a green body, drying the green body according to a drying system to obtain a dried green body, and performing pressureless sintering on the dried green body to obtain a silicon carbide ceramic product. The silicon carbide ceramic has the effects of improving the density, hardness and drying performance of the silicon carbide ceramic, the strength of a green body can be effectively improved, and the phenomena of cracking and deformation are reduced.
Owner:NANTONG SANZER PRECISION CERAMICS CO LTD +1

Anti-toppling frame for gas cylinder

The utility model discloses a gas cylinder anti-toppling frame in the technical field of gas cylinder anti-toppling frames, which comprises a supporting bottom plate, vertical rods are mounted at four corners of the top of the supporting bottom plate, moving components are mounted at the bottom ends of two groups of vertical rods positioned at the rear end, and an arc-shaped supporting vertical plate is fixedly mounted at the top of the supporting bottom plate. Clamping assemblies are rotationally connected to the two sides of the arc-shaped supporting vertical plate, multiple sets of supporting plates are welded between the two sets of vertical rods located on the same side, a switch assembly for controlling the two sets of clamping assemblies to rotate is installed between the supporting plates on the two sides, and each clamping assembly comprises multiple sets of clamping plates rotationally connected with the side face of the supporting vertical plate; the gas cylinder fixing support solves the problems that an existing gas cylinder is not provided with a special fixing support in the using process, the gas cylinder is prone to being pulled down or knocked down, the gas cylinder is inconvenient to carry and transfer according to using of workers, and people cannot use the gas cylinder conveniently.
Owner:SHAANXI XINNENG COAL PREPARATION TECH CO LTD

Rubber waterstop suitable for low-temperature environment of tunnel in cold region and preparation method of rubber waterstop

The invention relates to the technical field of rubber waterstops, and discloses a rubber waterstop suitable for a low-temperature environment of a tunnel in a cold region and a preparation method of the rubber waterstop. The rubber waterstop suitable for the low-temperature environment of the tunnel in the cold region is prepared from the following raw materials in parts by mass: 100 to 150 parts of ethylene propylene diene monomer, 5 to 15 parts of homopolymerized epichlorohydrin rubber, 20 to 40 parts of acrylate rubber, 1 to 3 parts of liquid nitrile rubber, 0.01 to 0.1 part of phthalic anhydride, 5 to 10 parts of nano graphene oxide, 1 to 3 parts of tetraethoxysilane, 1 to 2 parts of amino silane and 40 to 60 parts of reinforcing agent. 1-3 parts of an anti-aging agent, 1-5 parts of a plasticizer, 1-2 parts of a vulcanizing agent and 1-2 parts of an accelerant. The obtained water stop belt is excellent in mechanical performance, tensile strength, tearing strength and compression set at the low temperature of-40 DEG C are excellent, cracking is avoided at the low temperature, and the water stop belt can better adapt to the extreme environment.
Owner:INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI

Rotatable welding head structure

ActiveCN222520324URealize rotation adjustmentGood limit fixation effectWelding/cutting auxillary devicesAuxillary welding devicesWire fixationElectric wire
The utility model discloses a rotatable welding head structure, which relates to the welding technical field, and comprises a welding controller, a connecting wire and a welding head body, the connecting wire is fixedly installed at the side end part of the welding controller, the welding head body is fixedly installed at the side end part of the connecting wire, and the welding head body is fixedly installed at the side end part of the connecting wire. The connecting wire is provided with an adjusting mechanism facilitating rotary welding of the welding head body, the adjusting mechanism comprises a fixing pipe and two rotating shafts, the fixing pipe is fixedly connected to the circumferential end of the connecting wire in a sleeving mode, and the number of the rotating shafts is two. According to the welding head, the corrugated pipe is arranged and located on the outer side of the connecting wire, the connecting wire can be protected conveniently when the welding head body rotates and is bent, the situation that the position close to the welding head body is bent frequently and only the connecting wire is abraded is avoided, the deformation effect of the corrugated pipe is good, and the corrugated pipe can deform conveniently along with rotation of the welding head body.
Owner:DALIAN HENGSHUN WANTONG IND EQUIPMENT CO LTD

A deep hole drilling apparatus for elbow crank rods

The application relates to the technical field of machining equipment, in particular to a deep drilling device for elbow curved rods, which comprises an assembling shell, a hydraulic cylinder is embedded at the top end of the assembling shell, a pressing mechanism is connected to the power output end of the hydraulic cylinder, and a sliding groove is arranged on the abutting surface of the assembling shell and the pressing mechanism. The winding equipment body winds and unwinds the cable, so that the electromagnet connected with the connector through the thread is penetrated into the rod piece. When the hydraulic rod drives the inclined block to press and bend the rod piece, the bearing capacity is improved through the support of the electromagnet, so that the excessive pressing and bending of the rod piece is avoided, the deformation of the rod piece is avoided, the product quality is affected, the electromagnet is connected with the connector through the thread, the electromagnet is convenient to disassemble and assemble, the electromagnet with the diameter size suitable for the rod piece is replaced, the applicability is improved, the rod piece is conveniently attracted after the electromagnet is electrified through the cable, the sliding condition is avoided, the pressing and bending quality is affected, when the electromagnet is not worked, the connector is tightened in the connecting hole through the winding equipment body, and the rod piece is conveniently placed and corresponds to the electromagnet.
Owner:厦门礼田兴机械有限公司

Laminated thermoelectric-piezoelectric hybrid energy collector

The invention provides a laminated thermoelectric-piezoelectric hybrid energy collector. The collector comprises a laminated thermoelectric conversion unit and a piezoelectric conversion unit. The thermoelectric conversion unit comprises a heat-conducting sheet, a thermoelectric material, a conductive copper sheet, a load resistor and a wire. The piezoelectric conversion unit comprises a substrate layer cooling fin, a piezoelectric plate and a mass block. According to the hybrid energy collector, the thermoelectric conversion unit and the piezoelectric conversion unit are integrated, the thermoelectric energy converter and the piezoelectric energy converter are combined into a hybrid energy collection device, environmental waste heat and environmental wind energy are converted into electric energy at the same time, the manufacturing cost of the energy collector is reduced, and meanwhile the environmental energy utilization efficiency is improved. According to the device, heat energy generated by the waste heat discharging device and environmental wind energy can be fully utilized at the same time for recycling power generation capacity, high energy collection efficiency is achieved, the device is simple and stable, the practicability of the device is improved, and good application prospects are shown in the field of energy collection.
Owner:SHANGHAI DIANJI UNIV

Energy-saving and environment-friendly dry-type transformer

The utility model relates to an energy-saving and environment-friendly dry-type transformer, which aims at solving the technical problem that the utilization rate of natural wind of the current dry-type transformer is low, and comprises a transformer body, a backflow assembly and a fixing mechanism, the backflow assembly is arranged on the transformer body; wherein the backflow assembly comprises a backflow plate and a backflow groove; the two backflow plates are arranged on the two sides of the transformer body in a central symmetry mode through the fixing mechanisms. The backflow assembly is arranged, so that when the transformer body is used, natural wind can be blown to the windward side of the transformer body and the backflow plate firstly, the natural wind blown to the backflow plate can flow back along the backflow grooves, the backflow plate can flow back to the windward side of the transformer body, and the backflow plate can flow back to the windward side of the transformer body. And the natural wind after backflow can be blown to the leeside of the transformer body, so that the natural wind can take away heat generated by the transformer body to the maximum extent, the energy consumption of the transformer body is reduced, and energy conservation and environmental protection are achieved.
Owner:SHENZHEN GUORUN ELECTROMECHANICAL EQUIP CO LTD

A ventricular assist device that can be used for ventricular aneurysm

ActiveCN118105114Breduce the risk of blood clotsFast deformationSurgeryVentricular aneurysmVentricular assistance
A ventricular assist device that can be used for ventricular aneurysm includes a stent, the stent having a first end and a second end opposite to each other, a polymer film attached to the first end of the stent, a base provided at the second end of the stent, and a force-bearing portion formed between the first end and the second end of the stent, which can spontaneously adapt to the contraction and relaxation movements of the heart. That is, when the force-bearing portion contracts radially under force, the stent stretches axially; when the external force disappears and the force-bearing portion is not radially stressed, the stent returns to its original state. A skirt is provided at the edge of the polymer film, and one end of the skirt away from the polymer film is reversely adhered to the polymer film. When the stent enters the ventricle, the portion of the skirt that is reversely adhered to the polymer film is separated from the polymer film and adsorbed to the ventricular cavity wall, thereby reducing or even solving the problem of residual leakage after surgery.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

An aerogel sound-electric conversion device with sound absorption and power generation functions and a preparation method thereof

This invention belongs to the field of acoustic-to-electric conversion technology, and discloses an aerogel acoustic-to-electric conversion device with both sound absorption and power generation functions, as well as its preparation method. The aerogel acoustic-to-electric conversion device of this invention includes a nanofiber aerogel layer, electrode layers respectively disposed on opposite sides of the nanofiber aerogel layer, and a clamp for fixing the nanofiber aerogel layer and the electrode layers. The nanofiber aerogel layer comprises a three-dimensional porous structure composed of piezoelectric nanofibers. The electrode layers include a substrate and a conductive layer disposed on one side of the substrate. The electrode layers have a through-hole array, and the conductive layer is in contact with the nanofiber aerogel layer. The aerogel acoustic-to-electric conversion device of this invention can achieve the conversion of sound wave-induced mechanical energy into electrical energy while maintaining the sound absorption performance of the aerogel, and is suitable for scenarios such as noise absorption, sound energy harvesting, and self-powered sensing.
Owner:GUANGDONG VOCATIONAL & TECHNICAL COLLEGE

Combined sealing flange

ActiveCN222634055Uachieve sealinghave the effect of absorbing energyFlanged jointsIndustrial engineeringFlange
The utility model discloses a combined sealing flange, which relates to the technical field of flange combination, aims to solve the technical problems that the sealing performance of two connected flanges is influenced and leakage is easily caused by the influence of the vibration of a pipeline at present, and comprises a first flange main body and a second flange main body, connecting grooves are formed in the opposite faces of the first flange body and the second flange body, a sealing part is connected between the connecting grooves in the two sides in a clamped mode, and the sealing part is arranged in one connecting groove through a sealing piece with a plurality of first arc-shaped faces and a plurality of second arc-shaped faces and abuts against the other connecting groove in the assembling process. The first flange body and the second flange body are sealed when being extruded, and gaps in the connecting grooves are filled with the first clamping corners and the second clamping corners when being extruded. The utility model has the advantages that the installation position of the sealing element is stable, the sealing element is not easy to fall off in the assembly process, the position can be kept fixed during fixed combination, and the connection sealing performance is improved.
Owner:WUHAN QINGSHAN BEIHU NANFENG EQUIP CO LTD

Rotation angle adjusting mechanism, fixing device and child carrier

The utility model relates to a rotation angle adjusting mechanism, a fixing device and a child carrier. The rotation angle adjusting mechanism is used for the child carrier. The child carrier comprises a base and a seat assembly rotatably arranged on the base, and the rotation angle adjusting mechanism comprises a limiting piece arranged on the base; the pushing piece is arranged on the seat assembly and can rotate relative to the base along with the seat assembly; and the elastic reset piece is suitable for providing elastic restoring force for the pushing piece so that the pushing piece can abut against the limiting piece. When the seat assembly rotates to enable the pushing piece to be located in a specific angle range, the limiting piece drives the pushing piece to rotate towards the position in the preset direction, when the pushing piece is located in the preset direction, the limiting piece can be matched with the pushing piece to enable the pushing piece to be limited in the preset direction by the limiting piece, and therefore the seat assembly is limited in the preset use mode. The rotation angle adjusting mechanism can automatically adjust the rotation angle of the seat assembly, and therefore the situation that the rotation angle of the seat assembly is insufficient or excessive can be avoided.
Owner:CHINA WONDERLAND NURSERYGOODS

Micro catheter

PendingCN121944342AImprove fatigue resistanceavoid fatigue fractureCatheterCatheterMedical device
The invention relates to the technical field of medical instruments, and discloses a micro catheter. Wherein the microcatheter is sequentially provided with a lining tube and a high polymer material layer from inside to outside in the radial direction, a variable-diameter section is arranged at the far end of the microcatheter, a small-diameter section is arranged on one side of the far end of the variable-diameter section, and a large-diameter section is arranged on one side of the near end of the variable-diameter section; the high polymer material layer comprises a first hardness area, a second hardness area and a third hardness area which are sequentially arranged from the far end to the near end, the first hardness area is located on a part of the small-diameter section, the second hardness area is located on the other part of the small-diameter section, the variable-diameter section and a part of the large-diameter section, and the third hardness area is located on the other part of the large-diameter section; the hardness of the first hardness area is smaller than that of the second hardness area, the hardness of the second hardness area is smaller than that of the third hardness area, and smooth transition of different hardness materials of the large-diameter section and the small-diameter section of the microcatheter is achieved; the flexural rigidity of the reducing section is reduced, so that the change value of the flexural rigidity is reduced, the stress concentration is reduced, and the reliability of the microcatheter is improved.
Owner:SHANGHAI SHENQI MEDICAL TECH CO LTD

A high frequency voice coil motor

The present invention discloses a high-frequency voice coil motor, comprising a housing, a stator assembly mounted on the housing, a mover assembly mounted on the housing, and an elastic member connected to the housing; the mover assembly comprises a bobbin, a coil mounted on the bobbin, and an output shaft connected to the bobbin, and one end of the output shaft away from the bobbin is connected to the elastic member, and the elastic member is used for the output shaft to move stably. After the coil is energized, the bobbin and the stator assembly move relative to each other, and the bobbin moves back and forth in the housing. Driven by the bobbin, the output shaft moves back and forth in the housing, and the elastic member absorbs the vibration of the output shaft during the reciprocating movement of the output shaft by utilizing the flexibility and elasticity of the elastic member itself, and at the same time, the output shaft moves stably along its axial direction, so as to prevent the output shaft from shaking or swaying, and make up for the defect that the output shaft does not move in the axial direction due to radial swing between the bobbin and the stator assembly, thereby improving the stability of the voice coil motor.
Owner:横川机器人(深圳)有限公司 +1

Heat exchanger and air conditioner with better fin fitting effect

ActiveCN224743840UMake sure to embedincrease chimerism
This utility model belongs to the field of air conditioning technology, specifically providing a heat exchanger and air conditioner with better fin fitting effect. This utility model aims to solve the problem of poor fin fitting effect in existing heat exchangers. To this end, the heat exchanger of this utility model includes a refrigerant pipe and multiple fins. The diameter d of the refrigerant pipe is selected from any value between 5.8 mm and 6.5 mm. Each fin includes a fin body and at least one clamp portion through which the refrigerant pipe passes. The clamp portion protrudes from the fin body along its thickness direction, so that a groove is formed on the side of the fin body away from the clamp portion. An outwardly extending flange is provided at the end of the clamp portion away from the fin body. The ratio of the outer diameter of the flange to the inner diameter of the groove is greater than or equal to 0.85 and less than 1. The difference between the outer diameter of the flange and the inner diameter of the groove is selected from any value between 0.5 mm and 10 mm, ensuring that the flange is embedded in the groove of the adjacent fin when the refrigerant pipe passes through the clamp portion. This utility model improves the fin fitting effect of the heat exchanger.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +3

Method for reducing semiconductor stress

The invention discloses a method for reducing stress of a semiconductor. The method comprises the following steps: placing the semiconductor between two glass substrates; wherein the two glass substrates are oppositely arranged, and the contact surface of at least one glass substrate and the semiconductor is coated with UV glue; irradiating the UV glue for the first time by using ultraviolet light, so that the semiconductor and the UV glue are bonded together; carrying out sealing treatment on the semiconductor and the two glass substrates, placing a formed sealing structure in deionized water, and carrying out oscillation treatment by utilizing ultrasonic waves; the vibrated sealing structure is taken out of the deionized water to be dried, and the dried sealing structure is subjected to deblocking treatment; and irradiating the UV glue for the second time by using ultraviolet light, so that the semiconductor is separated from the UV glue. By adopting the technical scheme of the invention, the residual stress generated in the processing process of the semiconductor can be effectively reduced, so that the deformation of the semiconductor caused by the residual stress is improved, and the working performance of the semiconductor is prevented from being influenced.
Owner:SAE TECH DELEVOPMENT DONGGUAN

A solar cell and a printing plate assembly

ActiveCN224481991UImprove support strengthImprove easy breakageElectrical batterySolar battery
The application discloses a solar cell and a printing plate assembly. The solar cell comprises a plurality of sub-grid lines extending along a first direction, the plurality of sub-grid lines are arranged in a plurality of rows and a plurality of columns, a plurality of odd-numbered column sub-grid lines correspond to each other, a plurality of even-numbered column sub-grid lines correspond to each other, the even-numbered column sub-grid lines have an offset along the column direction relative to the odd-numbered column sub-grid lines, at least one main grid line extending along a second direction, the first direction intersects the second direction, the main grid line comprises a first lap portion and a second lap portion, the first lap portion and the second lap portion are alternately arranged along the second direction, so that the first lap portion laps the odd-numbered column sub-grid line, the second lap portion laps the even-numbered column sub-grid line, the first lap portion and the second lap portion are connected, adjacent the first lap portion and the second lap portion have a first interval along the first direction, so that the odd-numbered column sub-grid line and the even-numbered column sub-grid line have a second interval along the first direction.
Owner:HANGZHOU JINGBAO PRECISION TECHNOLOGY CO LTD

Wafer chuck

The present invention provides a wafer clamp, which relates to the technical field of semiconductor chip preparation. The wafer clamp comprises: a clamp seat, the front side of the clamp seat is provided with a fixed clamping claw, and the clamp seat is slidably connected with a movable clamping claw opposite to the fixed clamping claw; the movable clamping claw comprises a base and an arc-shaped spring sheet, and the two ends of the arc-shaped spring sheet are respectively connected to the base; the arc surface of the arc-shaped spring sheet is bent toward the side where the fixed clamping claw is located; the arc-shaped spring sheet comprises an abutting portion located in the middle part, and connecting portions located at the left and right ends, a transition portion is connected between the connecting portion and the abutting portion, and the transition portion has a plurality of through holes penetrating its front and rear surfaces.
Owner:TIANSHUI TIANGUANG SEMICON