Double-layer reverse silk-covered enameled stranded wire

Abstract

The utility model discloses a double-layer reverse silk-covered enameled stranded wire comprising an enameled wire body which is composed of a copper wire and an insulating paint layer, and the insulating paint layer is coated on the outer surface of the insulating paint layer; the enameled wire comprises an enameled wire body and glass fibers, the glass fibers are wound on the outer side of the enameled wire body, first thermal fuses are arranged between the glass fibers, heat-conducting carbon fibers are wound on the outer sides of the glass fibers, polyester yarns are wound on the outer sides of the heat-conducting carbon fibers, and second thermal fuses are arranged between the polyester yarns. The enameled stranded wire adopts a double-layer reverse wire structure, the insulating property of the enameled stranded wire is enhanced, the structure is stable, and the protection effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of enameled stranded wires, in particular to a double-layer reverse-wire-wrapped enameled stranded wire. Background Art

[0002] Enameled wire is a cable consisting of a conductor and an insulation layer, which has mechanical properties, chemical properties, electrical properties, and thermal properties. It is the main raw material for products such as motors, electrical appliances, and household appliances. Enameled stranded wire is made of two or more enameled single wires twisted in a circular spiral according to certain rules and directions. Compared with enameled wire, it has stable signal transmission and strong anti-interference ability.

[0003] Since the enameled stranded wire is easily rubbed against the external environment during use, the insulating paint film on the surface of the enameled stranded wire is worn, reducing the insulation effect of the enameled stranded wire. The current solution is to wrap natural silk or fiber silk around the outside of the enameled stranded wire, but the silk wire layer is generally a single-layer structure, which is still difficult to meet the high-wear use environment, and therefore urgently needs to be improved. Utility Model Content

[0004] The utility model aims to provide a double-layer reverse-wire enameled stranded wire to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a double-layer reverse wire-wrapped enameled stranded wire, comprising:

[0006] An enameled wire body, wherein the enameled wire body is composed of a copper wire and an insulating varnish layer, and the insulating varnish layer is coated on the outer surface of the insulating varnish layer;

[0007] Glass filaments, the glass filaments are wound around the outside of the enameled wire body, and a first thermal fuse is arranged between the glass filaments, a heat-conducting carbon fiber filament is wound around the outside of the glass filaments, a polyester filament is wound around the outside of the heat-conducting carbon fiber filaments, and a second thermal fuse is arranged between the polyester filaments.

[0008] Preferably, a high temperature resistant layer is provided on the surface of the insulating paint layer, and the high temperature resistant layer is a polyimide coating having good high temperature resistance.

[0009] Preferably, the winding direction of the glass filaments is opposite to the twisting direction of the enameled wire body, which is conducive to the tight winding of the glass filaments.

[0010] Preferably, the winding direction of the polyester filament is the same as the twisting direction of the enameled wire body, which is conducive to the tight winding of the polyester filament.

[0011] Preferably, a compression-resistant structure is provided on the outside of the polyester filament, and the compression-resistant structure includes an outer protective sleeve, an arc-shaped groove, and a hollow rubber tube. The outer protective sleeve is arranged on the outside of the polyester filament, and the arc-shaped grooves are all arranged on the inner surface of the outer protective sleeve. The hollow rubber tube is adhered to the inside of the arc-shaped groove, and the hollow rubber tube fits tightly to the polyester filament, thereby improving the compression resistance of the enameled stranded wire.

[0012] Preferably, a flame retardant layer is provided on the surface of the high temperature resistant layer, and the flame retardant layer is ceramic silicone rubber, which forms a hard ceramic shell at high temperature and has a flame retardant effect, thereby improving the flame retardancy and fire resistance of the enameled stranded wire.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the double-layer reverse wire enameled stranded wire adopts a double-layer reverse wire structure, which enhances the insulation performance of the enameled stranded wire, has a stable structure, and has a good protection effect;

[0014] By arranging glass yarn, first thermal fuse wire, polyester yarn, second thermal fuse wire and heat-conducting carbon fiber yarn, since the glass yarn and polyester yarn are wound around the outside of the enameled wire body in sequence, the winding direction of the glass yarn is opposite to the twisting direction of the enameled wire body, and the winding direction of the polyester yarn is the same as the twisting direction of the enameled wire body, and a double-layer reverse wire structure is adopted, which not only enhances the insulation performance of the enameled twisted wire, but also melts the first thermal fuse wire between the glass yarn and the second thermal fuse wire between the polyester yarn after heating and adheres the glass yarn and the polyester yarn together, so that they are tightly bonded, the structure is stable, and they will not fall apart, and the protection effect on the enameled wire body is good. Furthermore, since the heat-conducting carbon fiber yarn is arranged between the glass yarn and the polyester yarn, the heat-conducting carbon fiber yarn has a good thermal conductivity, thereby facilitating the heat extraction from the glass yarn and the polyester yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the enlarged structure of the enameled wire body of the utility model;

[0018] Figure 3 This is a schematic diagram of the enlarged structure of the glass fiber of the utility model;

[0019] Figure 4 For the utility model Figure 3The enlarged structural diagram at A in the middle;

[0020] Figure 5 It is a schematic diagram of a partially enlarged structure of the compression-resistant structure of the utility model.

[0021] In the figure: 1. enameled wire body; 101. copper wire; 102. insulating paint layer; 2. glass wire; 201. first thermal fuse; 3. polyester wire; 301. second thermal fuse; 4. thermal conductive carbon fiber wire; 5. pressure-resistant structure; 501. outer protective sleeve; 502. arc groove; 503. hollow rubber tube; 6. high temperature resistant layer; 7. flame retardant layer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides an embodiment: a double-layer reverse wire-wrapped enameled stranded wire, comprising:

[0025] The enameled wire body 1 is composed of a copper wire 101 and an insulating varnish layer 102, and the insulating varnish layer 102 is coated on the outer surface of the insulating varnish layer 102;

[0026] Glass filaments 2, the glass filaments 2 are wound around the outside of the enameled wire body 1, and first thermal fuses 201 are arranged between the glass filaments 2, thermal conductive carbon fiber filaments 4 are wound around the outside of the glass filaments 2, polyester filaments 3 are wound around the outside of the thermal conductive carbon fiber filaments 4, and second thermal fuses 301 are arranged between the polyester filaments 3;

[0027] The first thermal fuse 201 between the glass fibers 2 and the second thermal fuse 301 between the polyester fibers 3 are heated and melted to adhere the glass fibers 2 and the polyester fibers 3 together, so that they are tightly bonded, the structure is stable, and they will not fall apart, and the protection effect on the enameled wire body 1 is good;

[0028] The heat-conducting carbon fiber filaments 4 have good heat-conducting effect, so as to facilitate the heat dissipation inside the glass filaments 2 and the polyester filaments 3;

[0029] The surface of the insulating paint layer 102 is provided with a high temperature resistant layer 6, and the high temperature resistant layer 6 is a polyimide coating with good high temperature resistance;

[0030] The winding direction of the glass yarn 2 is opposite to the twisting direction of the enameled wire body 1, which is conducive to the tight winding of the glass yarn 2;

[0031] The winding direction of the polyester yarn 3 is the same as the twisting direction of the enameled wire body 1, which is conducive to the tight winding of the polyester yarn 3;

[0032] The outer side of the polyester yarn 3 is provided with a compression-resistant structure 5, which includes an outer protective sleeve 501, an arc-shaped groove 502, and a hollow rubber tube 503. The outer protective sleeve 501 is arranged on the outer side of the polyester yarn 3, and the arc-shaped grooves 502 are all arranged on the inner surface of the outer protective sleeve 501. The hollow rubber tube 503 is adhered to the inside of the arc-shaped groove 502, and the hollow rubber tube 503 is tightly fitted with the polyester yarn 3;

[0033] When the enameled stranded wire is squeezed by external force, the hollow rubber tube 503 inside the outer protective sheath 501 is deformed by force, dispersing the squeezing force, thereby improving the compression resistance of the enameled stranded wire;

[0034] The surface of the high temperature resistant layer 6 is provided with a flame retardant layer 7, and the flame retardant layer 7 is ceramic silicone rubber, which will form a hard ceramic shell at high temperature, has a flame retardant effect, and improves the flame retardant and fire resistant performance of the enameled stranded wire.

[0035] When the embodiment of the present application is used: first, since the glass filaments 2 and the polyester filaments 3 are sequentially wound around the outside of the enameled wire body 1, wherein the winding direction of the glass filaments 2 is opposite to the twisting direction of the enameled wire body 1, and the winding direction of the polyester filaments 3 is the same as the twisting direction of the enameled wire body 1, a double-layer reverse wire structure is adopted, which not only enhances the insulation performance of the enameled twisted wire, but also melts the first thermal fuse 201 between the glass filaments 2 and the second thermal fuse 301 between the polyester filaments 3 after heating and adheres the glass filaments 2 and the polyester filaments 3 together, so that they are tightly bonded, the structure is stable, and they will not fall apart, and the protection effect on the enameled wire body 1 is good. There is a heat-conducting carbon fiber filament 4 in between, and the heat-conducting carbon fiber filament 4 has a good heat-conducting effect, so that it is convenient to extract the heat inside the glass filament 2 and the polyester filament 3. Secondly, since the outer surface of the enameled wire body 1 is provided with a high-temperature resistant layer 6 and a flame-retardant layer 7 in sequence, the high-temperature resistant layer 6 is a polyimide coating with good high-temperature resistance, and the flame-retardant layer 7 is a ceramic silicone rubber, which will form a hard ceramic shell at high temperature and has a flame-retardant effect, thereby improving the flame retardant and fire-resistant properties of the enameled stranded wire. Moreover, when the enameled stranded wire is squeezed by external force, the hollow rubber tube 503 on the inner side of the outer protective sleeve 501 is deformed by force to disperse the squeezing force, thereby improving the compressive resistance of the enameled stranded wire.

[0036] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-layer reverse wire-covered enameled stranded wire, characterized in that: include: An enameled wire body (1), the enameled wire body (1) being composed of a copper wire (101) and an insulating varnish layer (102), and the insulating varnish layer (102) being coated on the outer surface of the insulating varnish layer (102); Glass filaments (2), the glass filaments (2) are wound around the outside of an enameled wire body (1), and first thermal fuses (201) are arranged between the glass filaments (2), thermal conductive carbon fiber filaments (4) are wound around the outside of the glass filaments (2), polyester filaments (3) are wound around the outside of the thermal conductive carbon fiber filaments (4), and second thermal fuses (301) are arranged between the polyester filaments (3), and a double-layer reverse wire structure is adopted to enhance insulation performance.

2. A double-layer reverse-wire enameled stranded wire according to claim 1, characterized in that: A high temperature resistant layer (6) is provided on the surface of the insulating paint layer (102), and the high temperature resistant layer (6) is a polyimide coating.

3. The double-layer reverse-wire enameled stranded wire according to claim 1, characterized in that: The winding direction of the glass filaments (2) is opposite to the twisting direction of the enameled wire body (1).

4. The double-layer reverse-wire enameled stranded wire according to claim 1, characterized in that: The winding direction of the polyester yarn (3) is the same as the twisting direction of the enameled wire body (1).

5. The double-layer reverse-wire enameled stranded wire according to claim 1, characterized in that: The outer side of the polyester filament (3) is provided with a pressure-resistant structure (5), and the pressure-resistant structure (5) comprises an outer protective sleeve (501), an arc-shaped groove (502), and a hollow rubber tube (503). The outer protective sleeve (501) is arranged on the outer side of the polyester filament (3), and the arc-shaped grooves (502) are all arranged on the inner surface of the outer protective sleeve (501). The hollow rubber tube (503) is adhered to the inside of the arc-shaped groove (502), and the hollow rubber tube (503) and the polyester filament (3) are tightly fitted.

6. A double-layer reverse-wire enameled stranded wire according to claim 2, characterized in that: A flame retardant layer (7) is provided on the surface of the high temperature resistant layer (6), and the flame retardant layer (7) is ceramic silicone rubber.

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