206results about How to "Improve shielding effect" patented technology

The invention provides an ultra-high-speed electric connector which comprises an insulating body, the insulating body is provided with a lengthwise slot, a plurality of terminal slots are formed in lengthwise side walls on the two sides of the slot respectively, and a fool-proof part is arranged in the slot and used for dividing the insulating body into a power supply and low-speed signal area and a high-speed signal area which are located on the two sides of the fool-proof part; the plurality of terminals comprise differential signal terminals distributed in the high-speed signal area and other terminals distributed in the high-speed signal area and the power supply and low-speed signal area, every two differential signal terminals are adjacent, and two sides of every two adjacent differential signal terminals are respectively provided with a grounding terminal; every two adjacent differential signal terminals and two grounding terminals located on the two sides of the two differential signal terminals form a terminal module, and the two differential signal terminals and the two grounding terminals of each terminal module and an insulating block inserted into the insulating body are formed in an embedded mode. The ultra-high-speed electric connector can enable signal transmission to be better and more stable.

The utility model relates to a mounting structure of PCB board large current conductor, this mounting structure includes metal base, PCB board, large current conductor and upper shell, the recessed groove for the large current conductor inlay is integrally arranged on the metal base, the PCB board sets up on the upper surface of metal base, the utility model discloses through embedding the large current conductor on the PCB board into the recessed groove inside the metal base, realizes the all -round metal surrounding and shielding of large current conductor, effectively avoids the electric field, magnetic field signal radiation to outside of the current on the large current conductor, realizes better EMC shielding effect.

A first terminal module comprises an insulating support, a plurality of first conductive terminals and at least one metal shielding sheet. The insulating bracket includes a bump portion. The first conductive terminal comprises a first signal terminal and a second signal terminal, and each of the first signal terminal and the second signal terminal comprises a first contact part. The metal shielding sheet comprises a channel part, and the convex block part is accommodated in the channel part. According to the invention, through the arrangement of the bump part, the structural strength of the insulating bracket can be improved; in addition, through the arrangement of the channel part, the shielding effect on the first conductive terminal can be improved. The invention further discloses a first backboard connector with the first terminal module.

This utility model discloses a wire-pair shielded data transmission cable with high transmission performance, comprising: a cross-shaped frame, the four isolation walls of the cross-shaped frame having different wall thicknesses, a buffer groove provided at the top of the isolation wall, and a folded groove aligned with the bottom of the buffer groove on the outer wall of the isolation wall, a filling rope and a set of twisted core wires arranged in the cavity between two adjacent isolation walls, aluminum-plastic composite tape wrapped around the twisted core wires, and tinned copper wire braided tape woven on the cross-shaped frame, the tinned copper wire braided tape being in direct contact with the aluminum surface of the aluminum-plastic composite tape, the tinned copper wire braided tape abutting against the twisted core wires and compressing the buffer groove, the groove wall of the buffer groove bending along the folded groove and abutting against the tinned copper wire braided tape after being compressed by the tinned copper wire braided tape, a wrapping tape wrapped around the tinned copper wire braided tape, and a sheath extruded onto the wrapping tape. This utility model has a simple structure and excellent signal shielding performance both internally and externally.

The utility model discloses a cable, which belongs to the field of cables and comprises a core wire, a middle coating layer, a first shielding layer, a second shielding layer and a ground wire, the middle coating layer is coated outside the core wire, the first shielding layer is coated outside the middle coating layer, the second shielding layer is coated outside the first shielding layer, and the ground wire is positioned between the middle coating layer and the first shielding layer. According to the cable provided by the utility model, through the combined action of multiple layers of structures, the middle coating layer, the first shielding layer and the second shielding layer can be dispersed to each layer when bearing external bending stress, so that the stress concentration of the core wire is reduced, the probability of deformation of the core wire due to repeated bending is reduced, the characteristic impedance stability is maintained, the signal transmission is ensured, and the data transmission abnormity is reduced.

This invention discloses a superhydrophobic and oleophobic coating combined with a solvent-free anti-corrosion primer and its preparation method. The superhydrophobic and oleophobic coating includes a solvent-free anti-corrosion primer layer, an intermediate paint layer, and a topcoat layer. The solvent-free anti-corrosion primer layer includes epoxy resin, butyl glycidyl ether, pigments, fillers, and additives. The intermediate paint layer includes fluorocarbon resin, diluent, pigments, fillers, and additives. The topcoat layer includes fumed silica and ethanol. This invention, through the mutual compatibility and synergistic effect of the primer layer, intermediate paint layer, and superhydrophobic topcoat layer, enables the overall coating to not only exhibit excellent hydrophobic and oleophobic properties but also possess long-lasting anti-corrosion performance, extending the service life of the metal substrate. It also improves the hydrophobic and oleophobic stability of the superhydrophobic and oleophobic coating, showing promising application prospects.

The application relates to the technical field of signal shielding devices, in particular to a portable multi-frequency-band shielding device which comprises a device main body, a first shielding unit and a second shielding unit. The first shielding unit is provided with a first antenna module, and the second shielding unit is provided with a second antenna module. The first antenna module is configured as an omnidirectional antenna, so that the shielding device meets the demand of shielding signals of various wireless devices; the second antenna module is configured as a directional antenna, so that the shielding device meets the demand of shielding signals of specific wireless devices; the first antenna module is installed outside the device main body, and the second antenna module is installed inside the device main body, so that the shielding effect of the shielding device on different signals is improved. In this way, the shielding function of the shielding device meets the expected requirement.

The utility model belongs to the technical field of electromagnetic shielding, particularly relates to a multilayer nested high-frequency electromagnetic shielding device, and aims to solve the problems that a single-layer box body of an existing device is extremely limited in high-frequency electromagnetic wave absorption capacity, a large amount of high-frequency electromagnetic interference is only simply reflected, the reflected electromagnetic waves are repeatedly refracted inside and outside the box body, and complex standing waves are formed. In order to solve the problems that the electromagnetic interference intensity in a box body cannot be effectively reduced and the complexity of an electromagnetic environment is aggravated, the utility model provides the following scheme: the multi-layer nested high-frequency electromagnetic shielding device comprises a shielding base, and an inner-layer shielding body, a middle-layer shielding body and an outer-layer shielding body are sequentially nested on the surface of the shielding base from inside to outside; the beneficial effects of the utility model are that the design of nesting in sequence from inside to outside enables each layer of shielding body to work cooperatively, weakens high-frequency electromagnetic interference layer by layer, and compared with a single-layer shielding structure, can cope with a complex high-frequency electromagnetic environment more comprehensively and efficiently, and significantly improves the shielding effect.

An electric connector comprises a terminal assembly which is provided with an insulation part, a signal terminal fixed on the insulation part and a shielding piece with a main body part, the main body part extends to form two arm parts, and the rear sides of the arm parts are provided with guide connection ends; the serial connection piece is located on the rear sides of the multiple terminal assemblies and is provided with a serial connection end which is connected with a shielding layer of the cable in a conducting mode, the serial connection piece is provided with multiple serial connection parts with the same height, the serial connection parts and the conducting connection ends of the two arm parts form grounding conducting connection, the serial connection piece is provided with covering parts, and one covering part is located between the two serial connection parts; the covering part, the main body part of the shielding piece and the two arm parts jointly form four-side wrapping on the signal terminal; the grounding piece is located at the front sides of the plurality of terminal assemblies and is provided with a grounding end which is conductively connected with a shielding layer of the cable, the grounding piece is provided with a plurality of grounding parts with the same height, the grounding parts and the main body parts of the terminal assemblies form grounding conductively connection respectively, and the serial connection parts and the grounding parts are different in height; the guide connecting sheets are located below the terminal assemblies, and each guide connecting sheet is provided with a plurality of guide connecting parts which are electrically connected with the serial connecting piece and the grounding piece respectively.

The application relates to a translational tolerance connector and a connector seat, the connector seat comprising a base with a fixed outer conductor, a floating seat composed of a floating insulator and a floating outer conductor arranged inside and outside, and an inner conductor, the floating seat as a whole is placed in the fixed outer conductor through the elastic bending part of the inner conductor, the base is provided with clamping parts for restricting the floating seat as a whole to horizontally slide along the X and Y directions from the upper and lower sides, and the floating outer conductor is provided with sliding parts in elastic abutment with the clamping parts, so that the floating outer conductor and the fixed outer conductor are in elastic abutment during the horizontal sliding of the floating seat along the X and Y directions. The application aims to provide a translational tolerance connector and a connector seat with excellent shielding effect and tolerance performance.

The application discloses a kind of magnetic field shielding method and device of mechanical pump electron beam welding, based on the simulation analysis of the magnetic field distribution at the weld of mechanical pump, according to the shape of mechanical pump, iterative design magnetic field shielding device, adopt high permeability permalloy to make " two half splicing " type double shielding structure, the splicing seam of inside and outside two shielding layers is 90 ° angle, installed in the periphery of mechanical pump, in the premise of not changing the performance of mechanical pump itself, not transforming electron beam welding equipment realizes beam current no deflection in the process of mechanical pump electron beam welding, realizes the precision welding of mechanical pump.

This invention relates to a layer-by-layer composite electrochromic thin film of Mo-WO3 and Bi-WO3 and its preparation method. The method includes: dissolving tungstic acid in hydrogen peroxide solution to obtain a peroxytungstic acid solution; adding a Bi-containing substance to the peroxytungstic acid solution and heating until the Bi-containing substance is completely dissolved to obtain a bismuth-doped peroxytungstic acid sol; adding a Mo-containing substance to the peroxytungstic acid solution and heating until the Mo-containing substance is completely dissolved to obtain a molybdenum-doped peroxytungstic acid sol; spin-coating the bismuth-doped peroxytungstic acid sol onto a conductive glass substrate and calcining to obtain a bismuth-doped WO3 thin film; and spin-coating the molybdenum-doped peroxytungstic acid sol onto the bismuth-doped WO3 thin film and calcining to obtain a Mo-WO3 / Bi-WO3 thin film. This invention employs a layer-by-layer composite structure design. The Bi-WO3 bottom layer significantly enhances the film-substrate adhesion and improves cycle stability; the Mo-WO3 surface layer ensures high optical modulation rate, fast response, and memory effect, achieving a synergistic performance improvement.

The utility model relates to a kind of three-phase voltage transformers of compartment, including shell and first, second single-phase mutual inductor, the top of shell is arranged three-phase, each phase includes a root of fusing tube, shell also includes three internal fusing tubes, the inner wall of the tube bottom of each internal fusing tube is arranged with spring contact finger, fuse is placed in tube, second nut is installed in tube mouth, the primary winding of first, second single-phase mutual inductor is electrically connected with first to fourth electrically conductive pole respectively, define three fusing tubes as first to third fusing tube, the other end of first electrically conductive pole is electrically connected with the spring contact finger of first fusing tube, the other end of second electrically conductive pole, third electrically conductive pole is electrically connected with the spring contact finger of second fusing tube, the other end of fourth electrically conductive pole is electrically connected with the spring contact finger of third fusing tube. Utilize a kind of three-phase voltage transformers of compartment designed by the utility model, can solve the problem of traditional three-phase voltage transformer common fusing tube, compact structure, increased operation and maintenance difficulty, reduced replacement efficiency.

The utility model relates to the technical field of flow meters, and discloses an anti-interference signal shielding shell of a vortex shedding flow meter, which comprises two shell bodies which are oppositely arranged to form a square box shape, two end walls of the shell bodies are provided with pipe grooves which can be butted to form pipe holes, connecting edges are fixedly arranged at the edges of the opposite surfaces, and the connecting edges are fixed through a plurality of screws. The shell is composed of a stainless steel shell on the outer side and a copper shell on the inner side. And the supporting legs are detachably arranged below the shell. The vortex shedding flowmeter has the advantages that the vortex shedding flowmeter has a good signal shielding protection effect, and output data errors are prevented.

This utility model discloses a metal-faced sandwich composite integrated panel for shielded rooms, relating to the fields of electromagnetic shielding and building envelope technology. This utility model includes a new integrated panel one for external building shielding and enclosure and a new integrated panel two for internal building shielding, decoration, and sound absorption. New integrated panel one consists of an enclosure layer, a sandwich layer, and a shielding layer; new integrated panel two consists of a shielding layer, a sandwich layer, and an enclosure layer. Through the unique design of new integrated panels one and two, this utility model is suitable for a wide frequency band of 10kHz-50GHz, exhibiting excellent shielding effectiveness, meeting and exceeding the national military standard GJB5792A-2021C level standard, fully meeting the design requirements of anechoic chambers and other types of shielded rooms. New integrated panels one and two are produced and constructed using innovative models and processes, achieving true integrated shielding, resulting in higher construction efficiency, better quality, stronger safety, shorter cycle time, and higher cost-effectiveness.

The application discloses a flexible multifunctional electromagnetic shielding film and a preparation method and application thereof. The electromagnetic shielding film comprises a carbon nanotube film, a high magnetic permeability layer and a high electrical conductivity layer combined with a first surface and a second surface of the carbon nanotube film respectively, and the electrical conductivity of the high magnetic permeability layer, the carbon nanotube film and the high electrical conductivity layer increases in turn, and the magnetic permeability decreases in turn. The application provides an electromagnetic shielding material with a three-layer structure. Due to the difference in the electrical conductivity and the magnetic permeability of the materials between the three layers, the electromagnetic wave experiences an 'absorption-reflection-reabsorption' process after entering the material, so that the material presents a low reflection characteristic. The Joule heating performance of the electromagnetic shielding film is good, the temperature response speed is fast when a voltage is applied, the stability of the electromagnetic shielding film during heating is excellent, the electromagnetic shielding film can remain stable for a long time, and the electromagnetic shielding film shows great application potential in the electromagnetic protection field and the thermal management field of high-integration electronic equipment.

The utility model discloses a kind of connecting lines for robot, including wire rod, the wire rod includes several core wires, shielding layer, braiding layer and outer covering layer, the shielding layer is covered in all core wires outside, the braiding layer is covered in shielding layer outside, the outer covering layer is covered in braiding layer outside, the shielding layer is aluminum foil layer, the braiding layer is woven from winding conductor, the material of outer covering layer is TPE, the core wire includes conductor and the first insulating layer covered in conductor outside, the material of first insulating layer is ETFE, the conductor is several tin-plated copper wires and the winding conductor stranded in several tin-plated copper wires, two core wires are twisted after being covered in second insulating layer to form wire;Whereby, it improves flexibility, tensile resistance and bending resistance, with stronger shielding effect, improves anti-interference capability.

The present application relates to the technical field of connector, especially to an electric connector assembly. The electric connector assembly comprises a shell, a PCB adapter plate is arranged in the shell, two or more rows of non-ground cables are electrically and fixedly connected to the PCB adapter plate, two or more rows of connecting pads are arranged on the front and back surfaces of the PCB adapter plate respectively, each row of connecting pads comprises a row of signal pads and ground pads, the core wire of the non-ground cable is electrically and fixedly connected to the signal pad on the front surface, the conductive outer sheath is electrically connected to the ground pad on the front surface, the signal pad and the ground pad on the back surface are used for being electrically connected to the corresponding terminals of a PCB female plate or being electrically connected to the corresponding terminals of an adapter socket and then being electrically connected to the PCB female plate, the PCB adapter plate is internally arranged with a conductive circuit to correspondingly connect the connecting pads on the front and back surfaces of the PCB adapter plate, and the electric connector assembly further comprises a load bottom support which is locked and connected to the shell. The electric connector assembly can realize multi-row high-density wiring and greatly improve the performance of the connector.

This utility model discloses a combined signal shielding cable, comprising a shielding paper layer, a PTFE tape layer covering the outer periphery of the shielding paper layer, a water-blocking layer covering the outer periphery of the PTFE tape layer, a tinned copper wire braided layer covering the outer periphery of the water-blocking layer, an outer insulation layer covering the outer periphery of the tinned copper wire braided layer, and a plurality of first conductor assemblies and a plurality of second conductor assemblies disposed within the shielding paper layer. The spaces between the plurality of first conductor assemblies, the plurality of second conductor assemblies, and the shielding paper layer are filled with a plurality of dispersed bulletproof wires and a plurality of fiberglass yarns. This utility model can adapt to complex and changing usage environments. By providing a multi-layered protective structure around the first and second conductor assemblies, it improves the cable's resistance to swaying, bending, corrosion, and aging, thereby extending the cable's service life.

The utility model discloses a calcium carbide furnace with cleaning structure, including nut, calcium carbide furnace body, door frame, cleaning door, nut is installed in the lateral part of cleaning door with the thread, nut and door frame movable contact, cleaning door is inserted in the door frame, and the door frame fixed connection is established in calcium carbide furnace body, and the internal space of door frame communicates with the internal space of calcium carbide furnace body. The calcium carbide furnace body includes the furnace body shell, and the upper portion of furnace body shell is hollow and is provided with cleaning import and export, and the door frame covers cleaning import and export, and the root of door frame is fixedly connected with furnace body shell. The door frame includes the frame body, unscrews the nut, then draws out along the door frame to the cleaning door, opens the opening of door frame, thereby opens the entrance of calcium carbide furnace body, and the calcium carbide furnace body is cleaned through the door frame, and the difficulty of opening or closing cleaning door is reduced through the operation of a small amount of nut, thereby the difficulty of cleaning calcium carbide furnace body is reduced.

This invention relates to a thermally insulating and high-pressure resistant polypropylene material, comprising the following components in parts by weight: polypropylene resin, hollow glass fiber, modified nano-ATO, hollow glass microspheres, antioxidant, latex powder, nucleating agent, and lubricant; wherein the modified nano-ATO is a product obtained by coupling nano-ATO with MPS and then copolymerizing it with octadecene and acrylate. Because the modified nano-ATO introduces long alkyl chains of octadecene, which are similar in polarity to polypropylene, the two molecules are more tightly packed through intermolecular forces and entanglement between molecular chain segments. The modified nano-ATO contains ester groups and other oxygen-containing groups that form hydrogen bonds with the hydroxyl groups on the surface of the hollow glass fiber, resulting in strong interactions between the nano-ATO and both the polypropylene matrix and the hollow glass fiber. This gives the modified nano-ATO excellent compatibility and stability with other components, significantly improving the pressure resistance and other mechanical properties of the polypropylene material.

A first connector comprises a first shell and a first terminal module. The first terminal module comprises a first terminal module, a first grounding module, a second grounding module, a first shielding plate, a second shielding plate and a first insulating plate. The first grounding module comprises a plurality of first grounding sheets which are arranged in a laminated manner. Each first grounding piece is provided with a first penetrating through hole penetrating through the first grounding piece in the thickness direction of the first grounding piece. The first penetrating through holes of the plurality of first grounding sheets are communicated with each other. The first insulating plate is at least partially formed on the first grounding module, and the first insulating plate is provided with a connecting column filled in the first through hole. According to the embodiment of the invention, the plurality of first grounding sheets can be tightened along the stacking direction by arranging the connecting columns, so that the plurality of first grounding sheets can be tightly attached together along the stacking direction, and the shielding effect can be improved.

The utility model discloses an energy storage system DC cable comprising a conductor, and the outer side of the conductor is sequentially wrapped by a composite isolation layer, an insulation layer, an anti-spraying layer, a ceramic protection layer, a metal fiber shielding layer and a sheath layer. The conductor is of a layered winding structure, and the winding pitch is 6-8 times of the twisting outer diameter of the conductor. The direct-current cable of the energy storage system has excellent bending performance and tensile performance, also has excellent electrical insulation performance, and can ensure stable insulation performance in both high-temperature and low-temperature environments; meanwhile, the cable is fireproof, waterproof, damp-heat-resistant and excellent in flame retardant property; moreover, the cable can resist electromagnetic interference, thereby guaranteeing the stability of signal transmission. In addition, the cable is small in outer diameter and light in weight, and can meet the requirements of light weight and flexibility of the cable.

The invention discloses an Ag2S / Cu9S8 / PANI / cotton fabric and a preparation method and application thereof. The preparation method comprises the following steps: preparing an organic phase solution and a water phase solution; respectively soaking the cotton fabric in the organic phase solution and the aqueous phase solution to obtain a PANI cotton fabric; mixing copper sulfate pentahydrate, sodium thiosulfate, silver nitrate and distilled water, and adjusting the pH value to obtain a reaction solution; and putting the PANI cotton fabric into the reaction solution to react, and then taking out to obtain the Ag2S / Cu9S8 / PANI / cotton fabric. An interfacial polymerization method is adopted to synthesize polyaniline on a cotton fabric to prepare a PANI cotton fabric in situ, and a stepped heating water bath oscillation reaction is adopted to prepare the Ag2S / Cu9S8 / PANI cotton fabric. According to the invention, the preparation method is simple and convenient, and the prepared Ag2S / Cu9S8 / PANI cotton fabric has excellent conductivity and electromagnetic shielding effectiveness.

The utility model relates to the technical field of shielding materials, and discloses a shielding structure, a cable and an electronic product. The shielding structure comprises a polyimide film layer and a conductive cloth layer, the polyimide film layer and the conductive cloth layer are bonded through an acrylic adhesive layer, a conductive adhesive layer is attached to the side, away from the acrylic adhesive layer, of the conductive cloth layer, and the overall thickness T after the polyimide film layer, the acrylic adhesive layer, the conductive cloth layer and the conductive adhesive layer are attached is smaller than or equal to 0.04 mm. The cable comprises a conductive wire and a shielding structure, and the shielding structure is pasted and coated on the outer side of the conductive wire. The electronic product comprises a first main body and a second main body which are rotationally connected, and the first main body and the second main body are electrically connected through a cable. According to the utility model, the shielding performance, wear resistance and bending durability of the shielding structure are improved, the thickness does not exceed 0.04 mm, the shielding structure can bear 500,000 times of rotating friction without being damaged and layered, and the shielding structure still has high shielding performance and conductivity.

The utility model provides a kind of multifunctional flip type mobile phone shielding box, including box and soundproofing module, box includes outer storehouse body and the flip of rotation connection in outer storehouse body, soundproofing module is composed of outer soundproofing layer and inner soundproofing layer, and inner soundproofing layer is equipped with the mobile phone accommodating cavity of accommodating, mobile phone accommodating cavity bottom is equipped with the sound interference collection recording interference module of interference sound and wireless charging module;Outer storehouse body inside is equipped with storage chamber, and soundproofing module is arranged in storage chamber, the inner wall of the chamber box is equipped with shielding component, when the flip is covered on outer storehouse body, the shielding component and soundproofing module hinder mobile phone accommodating cavity and the sound and signal transmission of outside. The utility model reduces the sound pickup effect of mobile phone to outside sound by recording interference, electromagnetic shielding and independent soundproofing module cooperation, improves the recording interference and electromagnetic shielding effect of shielding box.

The utility model relates to the technical field of isolation protection, in particular to a lead-free ray protection plate partition wall which comprises a first protection plate, a second protection plate is arranged on one side of the first protection plate, a first sealing rubber strip is fixedly connected to the side face of the first protection plate, and a second sealing rubber strip is fixedly connected to the side face of the second protection plate. According to the lead-free ray protection plate partition wall, through the arrangement of the first protection plate, the second protection plate, the first sealing rubber strip and the second sealing rubber strip, when the lead-free ray protection plate partition wall is used, the first protection plate is used for preliminarily shielding rays, the second protection plate is used for further absorbing scattered rays, splicing seams of the two layers of protection plates are staggered, and the rays are prevented from leaking from the splicing seams; the first sealing rubber strip and the second sealing rubber strip are both arranged at the splicing seam, so that ray leakage is further prevented, the ray shielding effect is improved, and the situation that the splicing position of a traditional protection plate is not spliced in a staggered mode, rays are prone to leakage, and the protection performance of the device is reduced is avoided.

The application discloses a helium leak detection box chamber protective pipeline assembly with strong sealing and shielding performance and relates to the technical field of helium leak detection box chamber pipeline assemblies. The helium leak detection box chamber protective pipeline assembly with strong sealing and shielding performance comprises a mounting seat, a mounting hole is formed in the surface of the mounting seat, a limiting groove is formed in the surface of the mounting seat, and a pressing assembly is arranged in the limiting groove. The helium leak detection box chamber protective pipeline assembly with strong sealing and shielding performance is used in the following manner: the shielding pipe is penetrated through the wall between the shielding chamber and the shielding chamber operating room, then the mounting seat is fixed to the wall surfaces of the operating room and the shielding chamber through wall nails and mounting holes, so that the fast mounting effect is achieved, the threaded rod is rotated to rotate into the threaded hole of the positioning nut, at the same time, the sliding block also moves along the outside of the threaded rod, and the sliding block, the connecting block and the pressing ring clamp and fix the line pipe as the threaded rod rotates in.

The utility model discloses a wear-resistant vehicle wire harness assembly which comprises a first joint and a second joint arranged on the right side of the first joint, and the first joint and the second joint are connected through a wire harness body. The wire harness body is composed of a wear-resistant layer, a flame-retardant layer, a heat-insulating layer, a reinforcing layer, an elastic layer, a shielding layer, an insulating layer, a wire core and a separation insulating column. Through the arrangement of the wear-resistant layer, the wear-resistant effect of the surface of the wire harness body is improved, the phenomenon that the wire harness is abraded with the internal structure of a vehicle after being used for a long time is reduced, and therefore the service life of the wire harness is prevented from being influenced, through the arrangement of the flame-retardant layer, the flame-retardant effect of the wire harness body is improved, the safety in use is improved, and through the arrangement of the heat insulation layer, the service life of the wire harness is prolonged. The heat insulation effect of the wire harness body is improved, the strength of the wire harness body is improved through the arrangement of the reinforcing layer, the service life of the wire harness body is further prolonged, and the insulation effect of the wire core is improved through the arrangement of the insulation layer.

This utility model relates to the field of current transformer technology and discloses a shielded electronic current transformer that solves the problem of poor shielding effect in existing electronic current transformers. It includes a shielded induction coil housing, an insulator, and a shielded electronic device mounting housing. The induction coil is installed inside the shielded induction coil housing. A busbar is installed through the center of the shielded induction coil housing, passing through the center of the induction coil. A grounding wire is installed at one end of the bottom of the shielded induction coil housing. A breakdown-resistant component is installed at the top of the shielded electronic device mounting housing. Both the shielded induction coil housing and the shielded electronic device mounting housing are composed of an aluminum alloy layer, an aluminum oxide insulating outer layer, a carbon nanofiber layer, an aluminum foil layer, a copper mesh layer, a nanocrystalline absorbing layer, and an epoxy resin curing layer. This electronic current transformer improves shielding performance.