Conductive fibers and wearable devices

Abstract

This utility model discloses a conductive fiber and a wearable device, relating to the field of flexible sensor technology. The conductive fiber includes an elastic core, a conductive layer, and an insulating layer. The conductive layer's wires are spirally wound in the same direction around the outside of the elastic core, covering the outer layer of the elastic core. Similarly, the insulating layer's wires are spirally wound in the same direction around the outside of the conductive layer, covering the outer layer of the conductive layer. The technical solution provided by this utility model achieves strain insensitivity, while also being simple to manufacture and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of flexible sensor technology, and in particular to a conductive fiber and a wearable device. Background Technology

[0002] Flexible sensors possess excellent properties such as portability, comfort, and flexibility, allowing them to be fixed anywhere on the subject or seamlessly integrated into wearable devices (such as clothing or accessories). They play a crucial role in motion signal monitoring, health monitoring, and human-machine interfaces. In flexible electronic devices, strain-insensitive stretchable wires are a core component, providing stable electrical signal transmission between electronic components. Currently, strain-insensitive stretchable wires typically achieve their strain-insensitive properties by either filling an elastic polymer substrate with liquid metal or creating a corrugated structure on the outside of the elastomer substrate. However, these methods are relatively complex and costly. Utility Model Content

[0003] The main purpose of this invention is to propose a conductive fiber and a wearable device that achieves strain insensitivity while being simple to manufacture and low in cost.

[0004] To achieve the above objectives, this utility model proposes a conductive fiber, which includes an elastic core, a conductive layer, and an insulating layer. The wires of the conductive layer are spirally wound in the same direction around the outside of the elastic core and cover the outer layer of the elastic core. The wires of the insulating layer are spirally wound in the same direction around the outside of the conductive layer and cover the outer layer of the conductive layer.

[0005] In one embodiment, the winding angle between the wires of the conductive layer and the elastic core is different from the winding angle between the wires of the insulating layer and the wires of the conductive layer.

[0006] In one embodiment, the winding angle between the wires of the conductive layer and the elastic core is 15°-30°; the winding angle between the wires of the insulating layer and the wires of the conductive layer is 85°-95°.

[0007] In one embodiment, the conductive layer wire is cylindrical, and the diameter of the conductive layer wire is 0.15mm-0.25mm; and / or,

[0008] The wire of the insulating layer is cylindrical, and the diameter of the wire of the insulating layer is 0.1mm-0.2mm.

[0009] In one embodiment, the elastic shaft core is composed of multiple elastic fibers;

[0010] The elastic fiber includes one of spandex, silicone filament, thermoplastic polyurethane elastomer, and high-elastic nylon; and / or,

[0011] The elastic fibers in the elastic shaft core have a fineness of 40D-60D.

[0012] In one embodiment, the conductive layer is composed of conductive wire, which includes one of enameled wire, paper-insulated wire, and glass fiber-insulated wire.

[0013] In one embodiment, the insulating layer is composed of insulating fibers, including one of nylon, polyester, and polypropylene.

[0014] In one embodiment, the conductive fiber further includes an electromagnetic shielding layer, wherein the wires of the electromagnetic shielding layer are spirally wound in the same direction around the outside of the conductive layer and cover the outer layer of the conductive layer, and the insulating layer is spirally wound in the same direction around the outside of the electromagnetic shielding layer and covers the outer layer of the electromagnetic shielding layer.

[0015] In one embodiment, the winding angle between the wires of the electromagnetic shielding layer and the wires of the conductive layer is 85°-95°, and the winding angle between the wires of the insulating layer and the wires of the electromagnetic shielding layer is 85°-95°; and / or,

[0016] The electromagnetic shielding layer is composed of metal-plated fibers, which include one of aluminum-plated fibers, nickel-plated fibers, silver-plated fibers, and copper-plated fibers.

[0017] This invention also proposes a wearable device, which includes the conductive fibers described above.

[0018] The conductive fiber provided by this invention has a multi-layer wound structure, comprising an elastic core providing elasticity, a conductive layer providing conductivity, and an insulating layer providing appearance and color. The conductive layer wires are spirally wound in the same direction around the outer side of the elastic core, covering the outer layer of the elastic core. Similarly, the insulating layer wires are spirally wound in the same direction around the outer side of the conductive layer, covering the outer layer of the conductive layer. Because the conductive layer wires are spirally wound to form a helical structure, the helical structure can effectively absorb and disperse external forces, reducing deformation of the wires under stress. Simultaneously, the helical structure allows for a more uniform stress distribution when the wires are stretched or compressed, thereby reducing the degree of resistance change. In other words, the resistance of the wires in the conductive layer is less sensitive to strain, thus achieving strain-insensitive characteristics. Furthermore, compared to existing technologies that use liquid metal to fill the elastic polymer substrate or create a wrinkled structure on the outside of the elastomer substrate, the conductive fiber provided by this invention uses a multi-layer wound structure, which is simple to manufacture and relatively low in cost. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of an embodiment of the conductive fiber provided by this utility model;

[0021] Figure 2 This is a schematic diagram illustrating the application of the conductive fiber provided by this invention in fabric.

[0022] Explanation of icon numbers:

[0023] 100. Conductive fiber; 1. Elastic fiber; 2. Conductive wire; 3. Metal-plated fiber; 4. Insulating fiber; 200. Fabric matrix; 201. Electrode; 300. Electronic equipment.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] In the prior art, strain-insensitive stretchable wires achieve strain-insensitive properties by filling the elastic polymer substrate with liquid metal or by creating a pleated structure on the outside of the elastomer substrate. These methods often have technical problems such as relatively complex processes and relatively high costs.

[0029] To address the aforementioned technical problems, this invention proposes a conductive fiber that achieves strain insensitivity while being simple to manufacture and low in cost.

[0030] Please see Figure 1 In one embodiment of the present invention, the conductive fiber 100 includes an elastic core, a conductive layer and an insulating layer. The wires of the conductive layer are spirally wound around the outside of the elastic core in the same direction and cover the outer layer of the elastic core. The wires of the insulating layer are spirally wound around the outside of the conductive layer in the same direction and cover the outer layer of the conductive layer.

[0031] The elastic shaft core is made of an elastic material, which effectively ensures a tight bond between the elastic shaft core and the conductive layer during axial stretching, preventing slippage. The conductive layer is made of conductive wire, whose main function is to provide conductivity. The conductive wire is spirally wound in the same direction around the outside of the elastic shaft core, completely covering its outer layer. The insulating layer is made of insulating wire, whose main function is to provide insulation. The insulating wire is spirally wound in the same direction around the outside of the conductive layer, completely covering its outer layer. The winding angles of both the conductive and insulating layers are not limited.

[0032] Since both the conductive and insulating layers of the wire are spirally wound, a spiral structure is formed. This structure gives the wire the following advantages when subjected to external forces: (1) The spiral structure can effectively absorb and disperse external forces, reducing the deformation of the wire caused by the force; (2) The spiral structure can enable the wire to achieve a uniform stress distribution when it is stretched or compressed, thereby improving the elasticity of the wire; (3) The spiral structure increases the flexibility of the wire, making it less prone to breakage during bending.

[0033] Furthermore, the conductive layer wires employ a helical winding process, reducing their resistance sensitivity to strain. This means the conductive fiber 100 achieves strain insensitivity for the following reasons: a) Uniform stress distribution: The helical structure allows for a more uniform stress distribution when the conductive layer wires are stretched or compressed. This means that even if the conductive wire 2 deforms, the reduction in cross-sectional area and the increase in length are uniform, thus reducing the degree of resistance change. b) Maintaining cross-sectional area: The helical structure can resist deformation to a certain extent, maintaining the cross-sectional area of ​​the conductive wire 2. This is because, under tension, some force can be absorbed through the deformation of the helical structure, rather than simply by increasing length and decreasing cross-sectional area. c) Stable crystal structure: The helical structure may cause a rearrangement of the internal crystal structure of the conductive wire 2, making the lattice more stable and reducing resistance changes caused by lattice deformation. d) Residual stress: The helical structure may introduce residual stress into the conductive wire 2. This stress can, to some extent, offset externally applied stress, reducing the deformation of the conductive wire 2 and thus reducing its resistance change. e. Dislocation motion suppression: The spiral structure may suppress the motion of dislocations. Dislocations are a type of defect in the crystal lattice, and their motion can cause changes in resistance. By suppressing dislocation motion, the resistance changes caused by dislocations can be reduced.

[0034] It should be noted that when subjected to external stretching, the conductive wire 2, which provides conductivity, will only undergo spatial reconstruction and straightening, while the path through which the current flows will not be lengthened, meaning that the resistance change is small, thus exhibiting good strain insensitivity performance.

[0035] The conductive fiber 100 provided by this invention employs a spiral winding structure for the conductive layer wires, which reduces the sensitivity of its resistance to strain, thereby enabling the conductive fiber 100 to achieve strain insensitivity. Furthermore, compared to existing technologies that use liquid metal to fill the elastic polymer substrate or create a pleated structure on the outside of the elastomer substrate, the conductive fiber 100 provided by this invention uses a multi-layer winding structure, which is simple to manufacture and relatively low in cost.

[0036] In an optional embodiment, the winding angle of the conductive layer wires differs from that of the insulating layer wires. This winding method allows the conductive layer wires and insulating layer wires to overlap interlaced, resulting in a tighter bond and higher bonding strength. It also more effectively disperses stress and inhibits wire loosening, enhancing the overall structural stability of the conductive fiber 100.

[0037] In some embodiments of this invention, the winding angle between the conductive layer wire and the elastic core is 15°-30° (e.g., 15°, 20°, 25°, 30° and any range between the two endpoints).

[0038] By selecting the winding angle range mentioned above, the conductive layer wire can possess both a certain degree of flexibility and good tensile strength. Furthermore, within this winding angle range, when the conductive layer wire is subjected to external forces such as tension or bending, stress can be better dispersed, avoiding the risk of damage due to stress concentration and extending its service life. In addition, the above winding angle range can optimize the electron transmission path, ensuring smooth electron conduction within the conductive layer wire. It also helps reduce electromagnetic signal interference, improving the accuracy and stability of signal transmission, making it suitable for applications with high signal quality requirements.

[0039] In some embodiments of this invention, the winding angle between the wires of the insulating layer and the wires of the conductive layer is 85°-95° ​​(e.g., 85°, 90°, 95° and any range between the two endpoints).

[0040] By selecting the aforementioned winding angle range, the wires of the insulation layer and the conductive layer overlap and interweave, resulting in a tighter bond and higher bonding strength, thus enhancing the overall structural strength of the conductive fiber 100. Furthermore, it allows for a tighter and more regular winding of the insulation layer wires, effectively improving insulation performance and ensuring a neat and aesthetically pleasing appearance. Simultaneously, the aforementioned winding angle range ensures more uniform protection of the internal conductive layer wires by the insulation layer. When subjected to external impacts or friction, the insulation layer can more evenly distribute the external force, reducing damage to the internal wires and extending service life.

[0041] In some embodiments of this utility model, the conductive layer wire is cylindrical, and the diameter of the conductive layer wire is 0.15mm-0.25mm (e.g., 0.15mm, 0.18mm, 0.2mm, 0.22mm, 0.25mm, and any range of values ​​at both ends).

[0042] The conductive layer uses wires within the aforementioned diameter range, which have a suitable cross-sectional area to ensure smooth electron transport, relatively low resistance, and good conductivity. Furthermore, wires within the aforementioned diameter range have good flexibility, can withstand a certain degree of bending without breaking, and facilitate tight winding of the wires.

[0043] In a specific embodiment, the diameter of the conductive layer wire is 0.2mm, and the pitch during winding is 5 turns per 1cm.

[0044] In some embodiments of this utility model, the wire of the insulating layer is cylindrical, and the diameter of the wire of the insulating layer is 0.1mm-0.2mm (e.g., 0.1mm, 0.12mm, 0.15mm, 0.18mm, 0.2mm, and any range of values ​​at both ends).

[0045] The wires used for the insulation layer are selected within the aforementioned diameter range, possessing excellent insulation properties and good flexibility, and also exhibiting a beautiful and refined appearance.

[0046] In some embodiments of this invention, the elastic shaft core is composed of multiple elastic fibers 1, which enhances elasticity and flexibility, while also improving the strength and durability of the elastic fibers 1 and extending their service life. Furthermore, when the elastic shaft core is deformed by external force, the multiple elastic fibers 1 can buffer the deformation through their interaction, reducing the impact on the conductive layer and ensuring that the conductive layer has good conductivity stability.

[0047] Optionally, the number of elastic fibers 1 is 3-9.

[0048] Optionally, the elastic fiber 1 includes one of spandex, silicone filament, thermoplastic polyurethane elastomer, and high-elastic nylon.

[0049] In an optional embodiment, the fineness of the elastic fiber 1 in the elastic core is 40D-60D (e.g., 40D, 45D, 50D, 55D, 60D and any range between two endpoints).

[0050] The fineness of elastic fiber 1 is selected within the above range, which has good elasticity and appropriate strength, and good flexibility.

[0051] In an optional embodiment, the conductive layer is composed of conductive wire 2, which includes one of enameled wire, paper-insulated wire, and glass fiber-insulated wire. Enameled wire is a conductor formed by coating bare copper wire with insulating varnish, i.e., copper wire enameled wire, which has good insulation properties, high heat resistance, and small dimensions. Paper-insulated wire refers to an electric wire made by wrapping insulating paper around a conductor, which has good insulation properties, a certain mechanical strength, and good air permeability. Glass fiber-insulated wire is an electric wire with glass fiber wrapped around a conductor as the insulating material, which has good heat resistance, good insulation, mechanical strength, corrosion resistance, and aging resistance. In specific applications, conductive wire 2 can be selected from any of the above.

[0052] In an optional embodiment, the insulating layer is composed of insulating fibers 4, which include one of nylon, polyester, and polypropylene. Nylon fibers have strong abrasion resistance, good flexibility, good corrosion resistance, and high moisture absorption. Polyester fibers have high tensile strength, good stability, excellent light resistance, and easy cleaning. Polypropylene fibers have advantages such as light weight, good water resistance, strong chemical stability, and low cost. In specific applications, any of the above-mentioned insulating fibers 4 can be selected.

[0053] In some embodiments of this utility model, the conductive fiber 100 further includes an electromagnetic shielding layer, the wires of which are spirally wound in the same direction around the outside of the conductive layer and cover the outer layer of the conductive layer, and the insulating layer is spirally wound in the same direction around the outside of the electromagnetic shielding layer and covers the outer layer of the electromagnetic shielding layer.

[0054] In this embodiment, the conductive fiber 100 comprises, from the inside out, an elastic core, a conductive layer, an electromagnetic shielding layer, and an insulating layer. The conductive layer wires are tightly spirally wound around the outside of the elastic core, the electromagnetic shielding layer wires are tightly spirally wound around the outside of the conductive layer, and the insulating layer wires are tightly spirally wound around the outer layer of the conductive layer. The main function of the electromagnetic shielding layer is to provide electromagnetic shielding performance, shielding against electromagnetic interference, including interference from internal components of the electronic device (such as circuit boards, cables, electronic components, etc.), external electromagnetic sources (such as other electronic devices, radio signals, power lines, wireless communications, etc.), and signal transmission lines. It should be noted that the shielding effect is bidirectional and multi-faceted; it can prevent electromagnetic waves from inside the device from radiating to the external environment, prevent external electromagnetic waves from interfering with the internal electronic components of the device, and protect signals on the transmission line from external electromagnetic interference, ensuring signal clarity and accuracy.

[0055] In an optional embodiment, the winding angle between the wires of the electromagnetic shielding layer and the wires of the conductive layer is 85°-95° ​​(e.g., 85°, 90°, 95°, and any range between two endpoints), and the winding angle between the wires of the insulating layer and the wires of the electromagnetic shielding layer is 85°-95° ​​(e.g., 85°, 90°, 95°, and any range between two endpoints). Thus, the wires of the conductive layer, the electromagnetic shielding layer, and the insulating layer are interwoven and overlapped, resulting in a tighter bond, higher bonding strength, and consequently, higher overall structural strength of the conductive fiber 100.

[0056] In an optional embodiment, the electromagnetic shielding layer is composed of metal-plated fibers 3, which include one of aluminum-plated fibers, nickel-plated fibers, silver-plated fibers, and copper-plated fibers.

[0057] In an optional embodiment, the coating thickness of the metal-coated fiber 3 is 10μm-100μm (e.g., 10μm, 25μm, 50μm, 75μm, 100μm and any range between two endpoints). Selecting this thickness range can provide a better electromagnetic shielding effect and also ensure that the metal-coated fiber 3 has good conductivity, thereby improving the stability and reliability of the electromagnetic shielding layer, while taking into account good flexibility and strength.

[0058] Optionally, the metal-coated fiber 3 is cylindrical, and the diameter of the metal-coated fiber 3 is 0.15mm-0.25mm (e.g., 0.15mm, 0.18mm, 0.2mm, 0.22mm, 0.25mm, and any range of values ​​at both ends).

[0059] The metal-plated fiber 3 is selected within the above-mentioned diameter range. When wound, it can form a relatively tight electromagnetic shielding layer with good electromagnetic shielding effect. At the same time, it can also take into account good flexibility and strength, thereby improving the reliability and durability of the electromagnetic shielding layer.

[0060] The conductive fiber 100 provided by this utility model can be prepared by the following steps: S1. Take 3-9 clean elastic fibers 1 as elastic cores, and wind conductive wires 2 around the outside of the elastic cores using an automatic winding machine. Maintain a stable moving speed and adjust the tension during the winding process using a tension pay-off frame to ensure that the conductive wires 2 are tightly wound and not easily detached. S2. Inspect the wound composite fiber to ensure that its surface is flat, undamaged, and tightly wound, thus obtaining the first composite fiber. S3. Wind metal-plated fibers 3 around the outside of the first composite fiber using an automatic winding machine. Maintain a stable moving speed and adjust the tension during the winding process using a tension pay-off frame to ensure that the metal-plated fibers 3 are tightly wound and not easily detached. Repeat step S2 to obtain the second composite fiber. S4. Wind insulating fibers 4 around the outside of the second composite fiber using an automatic winding machine. Maintain a stable moving speed and adjust the tension during the winding process using a tension pay-off frame to ensure that the insulating fibers 4 are tightly wound and not easily detached. Repeat step S2 to obtain the third composite fiber, which is the conductive fiber 100 provided by this utility model.

[0061] It should be noted that during the winding process, the winding tension must be strictly controlled, ensuring a winding speed of 10-50 m / min. This guarantees that each layer of wire maintains appropriate tension, avoiding excessive looseness or tightness, to achieve a tightly wound layer. The dimensions and materials of the conductive wire 2, the metal-plated fiber 3, and the insulating fiber 4 can all refer to the above embodiments, and will not be repeated here.

[0062] The conductive fiber 100 provided by this utility model uses inexpensive and readily available raw materials (such as spandex, copper wire enameled wire, silver-plated fiber, nylon, etc.), and adopts a simple winding process. The process is simple and easy to reproduce, making it suitable for mass production.

[0063] This utility model also proposes a wearable device, which includes a conductive fiber 100. The specific structure of the conductive fiber 100 is as described in the above embodiments. Since this wearable device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Among them, the conductive fiber 100 provided by this utility model has good elasticity and flexibility, strain insensitivity and stretchability, and can be used as a sensing wire. The conductive fiber 100 can be fixed in the body of the wearable device. The wearable device includes, but is not limited to, smart clothing. The conductive fiber 100 is fixed in the smart clothing as a sensing wire. Optionally, the conductive fiber 100 is integrated into the fabric matrix 200 of the smart clothing.

[0064] In some embodiments, please refer to Figure 2Conductive fiber 100 is integrated into smart clothing through a textile process. The conductive fiber 100 is embedded in the fabric matrix 200 of the smart clothing. Electrodes 201, which can be made of brass alloy, are disposed on the surface of the fabric matrix 200. One end of the electrode 201 is welded to the conductive fiber 100, and the other end of the conductive fiber 100 is connected to an electronic device 300. It should be noted that for the same electronic device 300, two electrodes 201 need to be disposed on the surface of the fabric matrix 200, and the electrodes 201 and the electronic device 300 are connected through an embedded conductive fiber 100. Thus, signals can be transmitted through the conductive fiber 100. Because the conductive fiber 100 provided by this invention has strain-insensitive characteristics, it can transmit electrical signals stably and accurately, unaffected by deformation, making it suitable for long-term, continuous monitoring applications.

[0065] Of course, in some embodiments, the conductive fiber 100 itself does not have electromagnetic shielding function, but the electromagnetic shielding function is given to the wearable device body. For example, some or all of the wires of the fabric matrix 200 are replaced by metal-plated fibers 3 to achieve electromagnetic shielding performance, so the overall radial dimension of the conductive fiber 100 is smaller.

[0066] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An electrically conductive fiber, characterized by, The conductive fiber includes an elastic core, a conductive layer, and an insulating layer. The wires of the conductive layer are spirally wound in the same direction around the outside of the elastic core and cover the outer layer of the elastic core. The wires of the insulating layer are spirally wound in the same direction around the outside of the conductive layer and cover the outer layer of the conductive layer.

2. The electrically conductive fiber of claim 1 wherein, The winding angle between the wires of the conductive layer and the elastic shaft core is different from the winding angle between the wires of the insulating layer and the wires of the conductive layer.

3. The conductive fiber of claim 2, wherein, The winding angle between the wire of the conductive layer and the elastic shaft core is 15°-30°; The winding angle between the wires of the insulating layer and the wires of the conductive layer is 85°-95°.

4. The conductive fiber of claim 1 wherein, The conductive layer wires are cylindrical, and the diameter of the conductive layer wires is 0.15mm-0.25mm; and / or, The wire of the insulating layer is cylindrical, and the diameter of the wire of the insulating layer is 0.1mm-0.2mm.

5. The conductive fiber of claim 1 wherein, The elastic shaft core is composed of multiple elastic fibers; The elastic fiber includes one of spandex, silicone filament, thermoplastic polyurethane elastomer, and high-elastic nylon; and / or, The elastic fibers in the elastic shaft core have a fineness of 40D-60D.

6. The electrically conductive fiber of claim 1 wherein, The conductive layer is composed of conductive wires, including one of enameled wire, paper-insulated wire, and glass fiber-insulated wire.

7. The conductive fiber of claim 1 wherein, The insulating layer is composed of insulating fibers, including one of nylon, polyester, and polypropylene.

8. The conductive fiber of any one of claims 1 to 7, wherein, The conductive fiber also includes an electromagnetic shielding layer, wherein the wires of the electromagnetic shielding layer are spirally wound in the same direction on the outside of the conductive layer and cover the outer layer of the conductive layer, and the insulating layer is spirally wound in the same direction on the outside of the electromagnetic shielding layer and covers the outer layer of the electromagnetic shielding layer.

9. The conductive fiber of claim 8, wherein The winding angle between the wires of the electromagnetic shielding layer and the wires of the conductive layer is 85°-95°, and the winding angle between the wires of the insulating layer and the wires of the electromagnetic shielding layer is 85°-95°; and / or, The electromagnetic shielding layer is composed of metal-plated fibers, which include one of aluminum-plated fibers, nickel-plated fibers, silver-plated fibers, and copper-plated fibers.

10. A wearable device, comprising: The wearable device includes conductive fibers as described in any one of claims 1 to 9.

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