Power line and electrical equipment

Abstract

The utility model discloses a power line and electrical equipment, and relates to the technical field of electrical appliances. The power line comprises an inner core, a magnetic attraction sheath and an outer sheath, the inner core comprises at least one conductor, and the outer peripheral surface of each conductor is sleeved with the inner sheath; the magnetic attraction sheath is sleeved outside the inner core; and the outer sheath is sleeved on the outer peripheral surface of the magnetic attraction sheath. According to the power line disclosed by the invention, the magnetic attraction sheath is arranged, so that the power line has an automatic stacking and winding function, the power line can be conveniently stored without adopting an additional device, and the storage operation of the power line becomes simple and convenient; the electrical equipment has the advantage that the power line is easy to store.

Description

Technical Field

[0001] This application relates to the technical field of electrical appliances, and in particular to a power cord and an electrical appliance device. Background Art

[0002] With the improvement of people's living quality, consumers also put forward requirements for the aesthetics and performance of power cords on the premise of meeting the conventional electrical conductivity, signal transmission characteristics, and anti-interference requirements. Traditional power cords often get tangled and knotted, becoming messy and difficult to organize and store, which brings great trouble to consumers when retrieving them, takes a lot of time and effort, and is prone to damage the power cord body, thus affecting the service life and safety of the power cord. Utility Model Content

[0003] In view of this, one object of this application is to provide a power cord to solve the technical problem that the power cords in the prior art often get tangled and knotted, becoming messy and difficult to organize and store.

[0004] Another object of this application is to provide an electrical appliance device including the above-mentioned power cord.

[0005] To achieve at least one of the above objects, this application provides the following technical solutions:

[0006] An embodiment of this application provides a power cord, which includes:

[0007] An inner core, which includes at least one conductor, and an inner sheath is sleeved on the outer peripheral surface of each conductor;

[0008] A magnetic attraction sheath, which is sleeved on the outside of the inner core;

[0009] An outer sheath, which is sleeved on the outer peripheral surface of the magnetic attraction sheath.

[0010] For the power cord as described above, wherein, the cross-section of the outer sheath is in an annular shape.

[0011] For the power cord as described above, wherein, the outer sheath is a halogen-free flame-retardant thermoplastic elastomer material layer or a halogen-free flame-retardant braided layer.

[0012] For the power cord as described above, wherein, the thickness of the outer sheath is less than or equal to 0.3 mm.

[0013] For the power cord as described above, wherein, the cross-section of the outer sheath is in an elliptical annular shape.

[0014] For the power cord as described above, wherein, the outer surfaces of the opposite sides of the outer sheath along the long axis direction are planes.

[0015] For the power cord as described above, wherein, the outer sheath is a halogen-free flame-retardant braided layer.

[0016] The power cord as described above, wherein the magnetic absorption sheath is a magnetic absorption sheath made of magnetic powder, thermoplastic elastomer and halogen-free low-smoke flame retardant material.

[0017] Another embodiment of the present application provides an electrical device, which includes the above-mentioned power cord.

[0018] The electrical device as described above, wherein the electrical device is a power strip, a rice cooker, a hair dryer or an electric fan

[0019] Compared with the prior art, the above technical solution has the following advantages:

[0020] For the power cord of the present application, by setting the magnetic absorption sheath, the power cord has an automatic stacking and winding function, so that the power cord can be conveniently stored without using an additional device, and thus the storage operation of the power cord becomes simple and convenient;

[0021] The electrical device of the present application has the advantage that the power cord is easy to store. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic cross-sectional structure diagram of the first structure of the power cord provided by some embodiments of the present application;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of the second structure of the power cord provided by some embodiments of the present application;

[0025] Figure 3 It is a schematic cross-sectional structure diagram of the third structure of the power cord provided by some embodiments of the present application;

[0026] Figure 4 It is a schematic cross-sectional structure diagram of the third structure of the power cord provided by some embodiments of the present application.

[0027] Explanation of the reference numerals in the drawings:

[0028] 10, inner core; 11, conductor; 12, inner sheath;

[0029] 20, magnetic absorption sheath;

[0030] 30, outer sheath. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become more clearly defined.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of this application and the above-mentioned accompanying drawings are intended to cover non-exclusive inclusion.

[0033] The "embodiments" mentioned in this application mean that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0034] The special term "exemplary" mentioned in this application means "serving as an example, embodiment or illustrative". Among them, any embodiment described as "exemplary" does not have to be construed as superior to or better than other embodiments. Although various aspects of the embodiments are shown in the accompanying drawings, unless otherwise specified, the drawings do not have to be drawn to scale.

[0035] In the description of this application, the orientation or positional relationship indicated by technical terms such as "inside" and "outside" is based on the orientation or positional relationship in the working state of this application, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of this application.

[0036] In the description of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The technical solutions of the embodiments of this application will be elaborated in detail below with reference to the accompanying drawings. The technical features involved in different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0038] Embodiment 1

[0039] As Figure 1 shown, the present application provides a power cord, which includes an inner core 10, a magnetic attraction sheath 20 and an outer sheath 30, wherein:

[0040] The inner core 10 includes at least one conductor 11, and an inner sheath 12 is sleeved on the outer peripheral surface of each conductor 11. Specifically, the conductor 11 is a conductive metal wire, such as a copper wire or an aluminum wire, and the inner sheath 12 is an insulating sheath to ensure the power-on safety of the power cord and prevent any leakage between the conductor 11 and the air;

[0041] The magnetic attraction sheath 20 is sleeved on the outside of the inner core 10, and the magnetic attraction sheath 20 itself has magnetic attraction ability, which can enable the power cord to be automatically stacked and wound;

[0042] The outer sheath 30 is sleeved on the outer peripheral surface of the magnetic attraction sheath 20, and the outer sheath 30 can protect the magnetic attraction sheath 20 and the inner core 10.

[0043] For the power cord of the present application, by setting the magnetic attraction sheath 20, the power cord is provided with an automatic stacking and winding function, so that the power cord can be conveniently stored without using an additional device, and thus the storage operation of the power cord becomes simple and convenient.

[0044] Further, the magnetic attraction sheath 20 is a magnetic attraction sheath 20 made of magnetic powder, thermoplastic elastomer and halogen-free low-smoke flame retardant material. Specifically, the magnetic powder includes magnetic powder materials such as anisotropic samarium iron nitride and / or anisotropic neodymium iron nitride. The magnetic attraction sheath made of such materials has good magnetic attraction ability, so as to ensure that the power cord has an automatic stacking and winding function.

[0045] Further, the cross-section of the outer sheath 30 is circular.

[0046] Still further, the outer sheath 30 is a halogen-free flame retardant thermoplastic elastomer material layer or a halogen-free flame retardant braided layer.

[0047] Further, the thickness of the outer sheath 30 is less than or equal to 0.3 mm. Such a thickness can not only protect the magnetic attraction sheath 20 and the inner core 10, but also have good flexibility performance.

[0048] Embodiment 2

[0049] The power cord of this embodiment is basically the same as that of Embodiment 1, except for the shape of the outer sheath 30. Specifically, as Figure 2 shown, in this embodiment, the cross-section of the outer sheath 30 is elliptical.

[0050] As Figure 3 and Figure 4As shown, further, the outer surfaces of the two opposite sides of the outer sheath 30 along the long axis direction are flat surfaces.

[0051] Furthermore, the outer sheath 30 is a halogen-free flame-retardant braided layer, and the thickness of the outer sheath 30 is less than or equal to 0.3 mm. Such a thickness can not only protect the magnetic attraction sheath 20 and the inner core 10, but also have good flexibility performance.

[0052] It should be noted that the shape of the outer sheath is also set according to actual use requirements. For example, the cross-section of the outer sheath can be a rectangular ring or an irregularly shaped ring.

[0053] Embodiment III

[0054] The present application also provides an electrical appliance having the above-mentioned power cord. Therefore, the electrical appliance of the present application has the advantage of easy storage of the power cord.

[0055] Furthermore, the electrical appliance is a power strip, a rice cooker, a hair dryer or an electric fan.

[0056] Next, the materials for preparing the magnetic attraction sheath will be specifically described.

[0057] The magnetic powder includes anisotropic samarium iron nitride magnetic powder and / or anisotropic neodymium iron nitride magnetic powder. The base material of the magnetic attraction sheath is materials such as TPV (Thermoplastic Vulcanizate), TPE (Thermoplastic Elastomer), TPU (Thermoplastic polyurethanes), ABS (ABS resin, acrylonitrile-butadiene-styrene copolymer, Acrylonitrile Butadiene Styrene) and polyamide resin, and processing aids such as halogen-free flame-retardant materials are added.

[0058] Specifically, the weight components of the materials for manufacturing the magnetic attraction sheath in the present application are as follows:

[0059] 55wt% - 75wt% of magnetic powder;

[0060] 15wt% - 25wt% of binder;

[0061] 5wt% - 25wt% of flame retardant;

[0062] 3.5wt% - 25wt% of processing aids.

[0063] Among them, the magnetic powder includes anisotropic samarium-iron-nitrogen magnetic powder and / or anisotropic neodymium-iron-nitrogen magnetic powder. Selecting samarium-iron-nitrogen magnetic powder with a specific particle size range, distribution characteristics, and uniform magnetism can be well combined with thermoplastic elastomers, etc. While having high magnetic properties, it ensures that the surface of the magnetic attraction sheath is smooth, with good flexibility and toughness, and is especially suitable for power cords and can be well combined with the outer sheath layer. In addition, based on the characteristics of nitrides, it has good corrosion resistance and oxidation resistance.

[0064] It should be noted that a flame retardant should be added to the processing aids.

[0065] Specifically, the x10 particle size of the anisotropic samarium-iron-nitrogen magnetic powder that can be used in this application is 0.6 μm to 1.0 μm, the x50 particle size is 1.9 μm to 2.4 μm, and the x99 particle size is 5.5 μm to 7.2 μm. Further, the maximum magnetic energy product (BH)max of this samarium-iron-nitrogen magnetic powder is 28 MGOe to 41 MGOe, the remanence (Br) is 12.5 kGs to 15.0 kGs, and the intrinsic coercivity (Hcj) is 8.0 kOe to 12.0 kOe. Such magnetic powder is a permanent magnetic powder with strong magnetic properties and submicron particle size.

[0066] Among them, "x10 particle size" means that in the particle size distribution of this magnetic powder, the particles smaller than the "x10 particle size" account for 10% of the total number of particles; "x90 particle size" means that in the particle size distribution of this magnetic powder, the particles larger than the "x90 particle size" account for 10% of the total number of particles; "x50 particle size" means the median particle size of this magnetic powder. In the particle size distribution, the particles smaller than the "x50 particle size" and the particles larger than the "x50 particle size" each account for 50%. These test data can all be obtained by measuring with a laser particle size analyzer.

[0067] The magnetic powder can also contain ferrite magnetic powder with a total amount of 0 to 40 wt%. At this time, the total amount of anisotropic samarium-iron-nitrogen magnetic powder and / or anisotropic neodymium-iron-nitrogen magnetic powder can be 30 wt% to 75 wt%. In order to cooperate with the samarium-iron-nitrogen magnetic powder and / or neodymium-iron-nitrogen magnetic powder, the x50 particle size of these ferrite magnetic powders is usually 1.4 μm to 2.0 μm.

[0068] Combining magnetic powders such as ferrite magnetic powder with samarium-iron-nitrogen magnetic powder can save costs while ensuring magnetic properties. In particular, the use of flame retardants can be reduced. Even when the amount of flame retardant used is small, the flame retardant grade of VW-1 can still be achieved.

[0069] In one embodiment, based on the total weight of the magnetic powder, the total amount of samarium-iron-nitrogen magnetic powder and / or neodymium-iron-nitrogen magnetic powder can be 30 wt% to 100 wt%, and the total amount of ferrite magnetic powder can be 0 wt% to 70 wt%.

[0070] In the materials for manufacturing the magnetic sheath of the present application, the role of the binder is to increase the fluidity of the magnetic powder particles and the bonding strength between them, and endow the magnet with mechanical properties and corrosion resistance; the choice of the binder can be determined according to the application requirements. Usually, a binder with a melting point between 80°C and 200°C can be selected, which still has certain tensile properties after being formed by a mold in a high-temperature molten state and cooled. And usually, a thermoplastic elastomer material with good fluidity, large bonding force, high bonding strength, low water absorption and good dimensional stability is selected.

[0071] In one embodiment, the binder is preferably one or more of styrene-based thermoplastic elastomers, olefin-based thermoplastic elastomers, diene-based thermoplastic elastomers, vinyl chloride-based thermoplastic elastomers, urethane-based thermoplastic elastomers (TPU), ester-based thermoplastic elastomers (TPE), amide-based (TPAE) thermoplastic elastomers, organofluorine-based (TPF) thermoplastic elastomers, thermoplastic resins (EEA) and silicone-based thermoplastic elastomers.

[0072] Among these materials, more preferably, materials such as TPE (Thermoplastic Elastomer), TPU (Thermoplastic polyurethanes), TPV (Thermoplastic Rubber) and polyamide resin, etc. The above-mentioned binder can achieve the following effects: making the material have good flexibility and better molding fluidity at the same time.

[0073] Among them, the binder is more preferably a combination of urethane-based (TPU) thermoplastic elastomer, ester-based (TPE) thermoplastic elastomer and / or TPV (Thermoplastic Rubber). This binder can ensure the toughness of the material while ensuring the tensile and bending properties of the sheath material, and is suitable for the application requirements of cables such as power cords.

[0074] In addition, the binder can also be selected from at least one of styrenics (SBS, SIS, SEBS, SEPS), olefins (TP0, TPV), dienes (TPB, TPI), vinyl chlorides (TPVC, TCPE), urethanes (TPU), esters (TPEE), amides (TPAE), organofluorines (TPF), organosilicones, and ethylenes, etc. And, according to actual usage needs, the selection range can also include at least one of polyamide resin, thermoplastic polyimide, liquid crystal polymer, polyphenylene sulfide, polyphenylene ether, polyolefin, modified polyolefin, polycarbonate, polymethyl methacrylate, polyether, polyether ketone, polyetherimide, polyoxymethylene, and chlorosulfonated polyethylene, and / or at least one of copolymers, blends, and polymer alloys formed based on at least one of polyamide resin, thermoplastic polyimide, liquid crystal polymer, polyphenylene sulfide, polyphenylene ether, polyolefin, modified polyolefin, polycarbonate, polymethyl methacrylate, polyether, polyether ketone, polyetherimide, polyoxymethylene, and chlorosulfonated polyethylene.

[0075] Among them, the polyamide resin can be, for example, nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6-12, and nylon 6-66; the liquid crystal polymer can be an aromatic polyester; the polyolefin can be polyethylene or polypropylene.

[0076] It should be noted that for processing and application needs, in the materials used to manufacture the magnetic suction sheath, in addition to the flame retardant that must be included, some processing aids are also included, such as at least one of coupling agents, plasticizers, lubricants, and antioxidants, which can be determined according to the selected binder and application requirements.

[0077] These coupling agents, plasticizers, lubricants, and flame retardants can use conventional materials and can be selected according to requirements.

[0078] Among them, plasticizers and lubricants can improve the performance of the sheath material, and at the same time can simplify the processing conditions and improve the processing efficiency to a certain extent; the flame retardant is used in conjunction with the thermoplastic elastomer to increase the applicability of the material in consumer electronics products such as data cables and meet strict safety requirements.

[0079] Specifically, the coupling agent includes titanate coupling agents and / or silane coupling agents;

[0080] The plasticizer includes at least one of dioctyl phthalate DOP, stearate, fatty acid, phosphate ester, benzene polycarboxylate, and alkyl sulfonate;

[0081] The lubricant includes at least one of silicone oil, wax, fatty acid, oleic acid, polyester, synthetic ester, carboxylic acid, alumina, silica, and titanium dioxide;

[0082] Flame retardants include organic flame retardants, inorganic flame retardants, and halogen-free flame retardants. Among them, organic flame retardants include, but are not limited to, flame retardants mainly composed of bromine-based, phosphorus-nitrogen-based, nitrogen-based, red phosphorus and its compounds, and inorganic flame retardants include, but are not limited to, flame retardants mainly composed of antimony trioxide, magnesium hydroxide, aluminum hydroxide, and silicon-based materials, etc. Halogen-free flame retardants are preferred, such as polyester-based halogen-free flame retardants, etc.

[0083] It should be noted that in some embodiments of the present application, since the magnetic powder contains ferrite magnetic powder, the ferrite magnetic powder can achieve a flame retardant effect alone or in combination with a flame retardant, and the ferrite magnetic powder itself has magnetism, which can reduce the degree of reduction of magnetic properties due to the addition of non-magnetic flame retardants. Therefore, in the sheath material containing ferrite magnetic powder, based on the total weight of the sheath material, the amount of the flame retardant can be 5wt% - 25wt%.

[0084] When the cross-section of the power cord is a perfect circle, the outer sheath adjacent to the magnetic adsorption sheath can be a halogen-free low-smoke flame-retardant thermoplastic elastomer material with a thickness not exceeding 0.3mm or a halogen-free flame-retardant braid. When the cross-section of the power cord is an ellipse, the outer sheath adjacent to the outside of the magnetic adsorption sheath is a halogen-free flame-retardant braid layer with a thickness not exceeding 0.3mm. Since the suction force is stronger when the contact surface of the adsorption surface is larger, considering the wire diameter size and weight of general household appliances, it is preferred that the cross-section of the power cord is an ellipse.

[0085] The above materials are prepared into a magnetic adsorption sheath with a thickness of 1mm by a magnetic field orientation head, which can achieve a surface magnetic flux density of at least 1000 Gs, a tensile strength between 1 MPa and 2 MPa, an elongation at break between 2% and 4%, and a Shore hardness below 90A.

[0086] The following specifically describes the processing process of the power cord of the present application:

[0087] S1. Prepare the raw materials for the sheath, and the weight components of the raw materials are as follows:

[0088] 55wt% - 75wt% of magnetic powder;

[0089] 15wt% - 25wt% of binder;

[0090] 5wt% - 25wt% of flame retardant;

[0091] 3.5wt% - 25wt% of processing aids.

[0092] Among them, when the magnetic powder contains samarium-iron-nitrogen magnetic powder, the x50 particle size of the samarium-iron-nitrogen magnetic powder is 1.9μm - 2.4μm; when the magnetic powder contains neodymium-iron-nitrogen magnetic powder, the x50 particle size of the neodymium-iron-nitrogen magnetic powder is 1.5μm - 2.0μm;

[0093] S2. Mix the above raw materials evenly and conduct kneading at 120°C to 200°C to obtain the sheath raw material;

[0094] S3. Feed the kneaded sheath raw material into a wire extrusion die (this die can refer to the Chinese invention patent with the application number 2024105836668) through an extruder. At the same time, insert the bare wire into the wire extrusion die from the inlet end. The sheath semi-finished product in a molten state between 130°C and 200°C undergoes magnetic orientation in the wire extrusion die, and a wire with a magnetic sheath is obtained through subsequent processes.

[0095] Among them, the materials of the magnetic powder include anisotropic samarium iron nitride magnetic powder, ferrite magnetic powder, and anisotropic neodymium iron nitride magnetic powder.

[0096] Specifically, the anisotropic samarium iron nitride magnetic powder can be:

[0097] The first type of anisotropic samarium iron nitride magnetic powder has a maximum magnetic energy product (BH)max of 38.7 MGOe, a remanence (Br) of 14.7 kGs, an intrinsic coercivity (Hcj) of 11.5 kOe, x10 of 0.71 μm, an x50 particle size of 2.10 μm, and x99 of 6.55 μm.

[0098] The second type of anisotropic samarium iron nitride magnetic powder has a maximum magnetic energy product (BH)max of 28.8 MGOe, a remanence (Br) of 12.9 kGs, an intrinsic coercivity (Hcj) of 8.5 kOe, x10 of 0.82 μm, an x50 particle size of 2.36 μm, and x99 of 7.14 μm.

[0099] The third type of anisotropic samarium iron nitride magnetic powder has a maximum magnetic energy product (BH)max of 32.2 MGOe, a remanence (Br) of 13.5 kGs, an intrinsic coercivity (Hcj) of 9.0 kOe, x10 of 0.85 μm, an x50 particle size of 2.45 μm, and x99 of 7.95 μm.

[0100] The ferrite magnetic powder can be:

[0101] The first type of ferrite magnetic powder has a maximum magnetic energy product (BH)max of 1.8 MGOe, a remanence (Br) of 1.82 kGs, an intrinsic coercivity (Hcj) of 2.92 kOe, and an average particle size of 1.48 μm.

[0102] The second type of ferrite magnetic powder has a maximum magnetic energy product (BH)max of 0.7 MGOe, a remanence (Br) of 1.74 kGs, an intrinsic coercivity (Hcj) of 2.76 kOe, and an average particle size of 1.69 μm.

[0103] The third type of ferrite magnetic powder has a maximum energy product (BH)max of 0.6 MGOe, a remanence (Br) of 1.65 kGs, an intrinsic coercivity (Hcj) of 2.64 kOe, and an average particle size of 1.90 μm.

[0104] The anisotropic neodymium iron boron magnetic powder can be:

[0105] The first type of anisotropic neodymium iron boron magnetic powder has the following properties: maximum energy product (BH)max of 20.3 MGOe, remanence (Br) of 12.5 kGs, intrinsic coercivity (Hcj) of 6.5 kOe, x10 of 0.56 μm, x50 particle size of 1.87 μm, and x99 of 5.55 μm.

[0106] The second type of anisotropic neodymium iron boron magnetic powder has the following properties: maximum energy product (BH)max of 16.5 MGOe, remanence (Br) of 11.9 kGs, intrinsic coercivity (Hcj) of 5.0 kOe, x10 of 0.75 μm, x50 particle size of 1.92 μm, and x99 of 5.86 μm.

[0107] The third type of anisotropic neodymium iron boron magnetic powder has the following properties: maximum energy product (BH)max of 10.2 MGOe, remanence (Br) of 11.5 kGs, intrinsic coercivity (Hcj) of 3.5 kOe, x10 of 0.92 μm, x50 particle size of 2.10 μm, and x99 of 6.33 μm.

[0108] The binder includes:

[0109] For TPU1, Elastollan BCF 45A 12P produced by BASF is selected, with a Shore hardness of 48A.

[0110] For TPU2, Elastollan SP1150A15P produced by BASF is selected, with a Shore hardness of 50A.

[0111] For TPU3, Elastollan 1170A10 produced by BASF is selected, with a Shore hardness of 71A.

[0112] For TPE1, TF3ZGO-LCNT produced by KRAIBURG TPE Germany is selected, with a Shore hardness of 00 - 30A.

[0113] For TPE2, TF5ZGO-LCNT produced by KRAIBURG TPE Germany is selected, with a Shore hardness of 00 - 50A.

[0114] For TPE3, SHF 50A - 3S1981 produced by GILLICHER USA is selected, with a Shore hardness of 50A.

[0115] For TPV, Santoprene 203 - 40 produced by ExxonMobil is selected, with a Shore hardness of 40A.

[0116] Processing aids include:

[0117] The lubricant selected is PMX-200 silicone oil.

[0118] The flame retardant selected is KSW-03 halogen-free phosphorus-nitrogen flame retardant.

[0119] Performance test methods

[0120] 1. Use the NIM-200C magnetic measurement system to detect magnetic properties.

[0121] 2. Use a gaussmeter to detect the surface magnetic flux density.

[0122] 3. Use a universal testing machine to detect the tensile strength (the measurement standard is ASTM D638) and the elongation at break (ASTM D412).

[0123] 4. Use a vertical burning tester to conduct a vertical burning test, and the measurement standard is UL1581.

[0124] The following describes the manufacturing process of the power cord of the present application in combination with specific embodiments using the above materials:

[0125] Embodiment 1

[0126] 1. Prepare the raw materials for the magnetic attraction sheath. The raw materials for the magnetic attraction sheath include the following raw materials in parts by weight:

[0127]

[0128] 2. Co-extrude the above raw materials for the magnetic attraction sheath with a 0.3-mm-thick TPE outer sheath through a wire extrusion die equipped with a magnetic field orientation device. After heating and maintaining a constant temperature for 1 hour, use a gaussmeter to measure the orientation magnetic field of the wire extrusion die to be 10.2 kOe.

[0129] The cross-section of the manufactured power cord is a perfect circle, the thickness of the magnetic attraction sheath is 1 mm, use a gaussmeter to closely adhere to the S pole of the orientation direction of the outer sheath of the finished power cord to detect the surface magnetic flux density of 1000 Gs, and the flame retardant grade of the power cord is VW-1.

[0130] Embodiment 2

[0131] 1. Prepare the raw materials for the magnetic attraction sheath. The raw materials for the magnetic attraction sheath include the following raw materials in parts by weight:

[0132]

[0133] 2. Extrude the above magnetic adsorption sheath raw materials together with a 0.3-mm thick TPE outer sheath through a wire extrusion die equipped with a magnetic field orientation device. After heating at a constant temperature for 1 hour, use a gauss meter to measure the orientation magnetic field of the wire extrusion die, and the magnitude is 12 kOe.

[0134] The cross-section of the made power cord is a perfect circle, the thickness of the magnetic adsorption sheath is 1 mm. Use a gauss meter to closely adhere to the S pole of the orientation direction of the outer sheath of the finished power cord, and the detected surface magnetic flux density is 1100 Gs. The flame retardant grade of the power cord is VW-1.

[0135] Example 3

[0136] 1. Prepare the magnetic adsorption sheath raw materials, and the magnetic adsorption sheath raw materials include the following raw materials by weight:

[0137]

[0138] 2. Extrude the above magnetic adsorption sheath raw materials through a wire extrusion die equipped with a magnetic field orientation device. After heating at a constant temperature for 1 hour, use a gauss meter to measure the orientation magnetic field of the wire extrusion die, and the magnitude is 12 kOe. After molding, apply a 0.3-mm thick braided layer through an outer sheath preparation device.

[0139] The cross-section of the made power cord is an ellipse, the thickness of the magnetic adsorption sheath is 1 mm. Use a gauss meter to closely adhere to the S pole of the orientation direction of the outer sheath of the finished power cord, and the detected surface magnetic flux density is 1150 Gs. The flame retardant grade of the power cord is VW-1.

[0140] Example 4

[0141] 1. Prepare the magnetic adsorption sheath raw materials, and the magnetic adsorption sheath raw materials include the following raw materials by weight:

[0142]

[0143] 2. Extrude the above magnetic adsorption sheath raw materials through a wire extrusion die equipped with a magnetic field orientation device. After heating at a constant temperature for 1 hour, use a gauss meter to measure the orientation magnetic field of the wire extrusion die, and the magnitude is 12 kOe. After molding, apply a 0.3-mm thick braided layer through an outer sheath preparation device.

[0144] The cross-section of the made power cord is an ellipse, the thickness of the magnetic adsorption sheath is 1 mm. Use a gauss meter to closely adhere to the S pole of the orientation direction of the outer sheath of the finished power cord, and the detected surface magnetic flux density is 1200 Gs. The flame retardant grade of the power cord is VW-1.

[0145] Example 5

[0146] 1. Prepare the magnetic adsorption sheath raw materials, and the magnetic adsorption sheath raw materials include the following raw materials by weight:

[0147]

[0148] 2. Extrude the above magnetic absorption sheath raw materials through a wire extrusion die equipped with a magnetic field orientation device. After heating and keeping the temperature constant for 1 hour, use a gauss meter to measure the magnitude of the orientation magnetic field of the wire extrusion die, which is 21 kOe. After forming, apply a 0.3 mm thick braided layer through an outer sheath preparation device.

[0149] 3. The cross-section of the made power cord is oval, the thickness of the magnetic absorption sheath is 1 mm. Use a gauss meter to closely adhere to the S pole of the orientation direction of the outer sheath of the finished power cord to detect the surface magnetic flux density of 1300 Gs, and the flame retardant grade of the power cord is VW-1.

[0150] Example Six

[0151] 1. Prepare the magnetic absorption sheath raw materials, and the magnetic absorption sheath raw materials include the following raw materials in parts by weight:

[0152]

[0153] 2. Extrude the above sheath raw materials through a wire extrusion die equipped with a magnetic field orientation device. After heating and keeping the temperature constant for 1 hour, use a gauss meter to measure the magnitude of the orientation magnetic field of the wire extrusion die, which is 21 kOe. After forming, apply a 0.3 mm thick braided layer through an outer sheath preparation device.

[0154] 3. The cross-section of the made power cord is oval, the thickness of the magnetic absorption sheath is 1 mm. Use a gauss meter to closely adhere to the S pole of the orientation direction of the outer sheath of the finished power cord to detect the surface magnetic flux density of 1400 Gs, and the flame retardant grade of the power cord is VW-1.

[0155] The mechanical properties of the power cords in the above examples are as follows:

[0156]

[0157] To sum up, for the power cord of the present application, by setting the magnetic absorption sheath, the power cord has an automatic stacking and winding function, so that the power cord can be conveniently stored without using an additional device, and further makes the storage operation of the power cord simple and convenient.

[0158] The electrical equipment of the present application has the advantage that the power cord is easy to store.

[0159] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A power cord, characterized in that, The power cord includes: An inner core, which includes at least one conductor, and an inner sheath is sleeved on the outer peripheral surface of each conductor; A magnetic attraction sheath, which is sleeved outside the inner core; An outer sheath, which is sleeved on the outer peripheral surface of the magnetic attraction sheath; Wherein, the cross-section of the outer sheath is in an elliptical ring shape, and the outer surfaces of the opposite two sides of the outer sheath along the long axis direction are planes.

2. The power cord according to claim 1, wherein The outer sheath is a halogen-free flame-retardant thermoplastic elastomer material layer or a halogen-free flame-retardant braided layer.

3. The power cord according to claim 1, wherein The thickness of the outer sheath is less than or equal to 0.3 mm.

4. An electrical device, characterized in that, The electrical equipment includes the power cord according to any one of claims 1 to 3.

5. The electrical device according to claim 4, characterized in that, The electrical equipment is a power strip, a rice cooker, a hair dryer or an electric fan.

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