A double-core flexible electric wire for twisted connection of copper core polyvinyl chloride insulation

Abstract

The present application relates to the technical field of double-core flexible electric wire, in particular to a double-core flexible electric wire with copper core and polyvinyl chloride insulation twisted connection. Technical problem: In the process of using the double-core flexible electric wire, the problem of deformation and tearing is prone to occur because the double-core flexible electric wire is only provided with a single compression-resistant protective structure and lacks double-buffering extrusion-resistant protection function. Technical scheme: The double-core flexible electric wire with copper core and polyvinyl chloride insulation twisted connection comprises an outer protective wire sleeve, a double-core electric wire body, an insulation shielding assembly, a compression-resistant tear-resistant assembly and a buffering extrusion-resistant assembly. The insulation shielding assembly can improve the stability and safety of the overall use of the outer protective wire sleeve, the compression-resistant tear-resistant assembly can play a role in anti-tearing wear protection for the double-core electric wire body, and the buffering extrusion-resistant assembly can play a double-buffering compression-resistant extrusion-resistant protection effect, thereby improving the stability of the double-core electric wire body.

Description

Technical Field

[0001] This invention relates to the field of two-core flexible wire technology, and more particularly to a copper-core polyvinyl chloride insulated stranded two-core flexible wire for connection. Background Technology

[0002] The structure of commercially available double-core flexible wires with copper core and PVC insulated stranded connections is relatively simple. Most of them only have a single compression protection structure and lack double buffer and compression protection. When the double-core flexible wire is subjected to a large external force, it is prone to deformation and tearing, which leads to the inability to guarantee the safety and stability of the double-core flexible wire during use. Therefore, there is an urgent need to develop a double-core flexible wire that can provide double buffer and compression protection to meet the needs of efficient, stable and safe use of double-core flexible wires. Summary of the Invention

[0003] To overcome the problem that most dual-core flexible wires only have a single pressure-resistant protection structure and lack double buffer and compression protection, which makes them prone to deformation and tearing when subjected to large external forces.

[0004] The technical solution of this invention is as follows: a copper-core polyvinyl chloride insulated stranded double-core flexible wire, comprising an outer protective sheath, a double-core wire body, an insulation shielding component, a pressure-resistant and tear-resistant component, and a buffer and compression-resistant component; the double-core wire body is disposed inside the outer protective sheath; the insulation shielding component for overall insulation and fire-resistant protection is disposed inside the outer protective sheath; the pressure-resistant and tear-resistant component for tear and abrasion resistance protection is disposed inside the double-core wire body; and the buffer and compression-resistant component for enhanced pressure resistance protection is disposed inside the pressure-resistant and compression-resistant component.

[0005] Preferably, the use of insulating shielding components can improve the overall stability and safety of the outer protective sheath, while the use of compression-resistant and tear-resistant components can provide tear-resistant and abrasion-resistant protection for the dual-core wire body. At the same time, the use of buffer and compression-resistant components can provide double buffer and compression-resistant protection, further improving the stability of the dual-core wire body.

[0006] Preferably, the outer protective sleeve includes a protective outer sleeve, a protective cavity, and a corrosion-resistant layer; the outer protective sleeve is provided with a protective outer sleeve made of polyvinyl chloride material; a protective cavity is provided inside the protective outer sleeve; the outer surface of the protective outer sleeve is coated with a corrosion-resistant layer, which can improve the service life of the protective outer sleeve, and the protective outer sleeve can provide additional mechanical protection and moisture protection.

[0007] Preferably, the insulating shielding assembly includes a first insulating sleeve, a first pressure-resistant inner sleeve, a braided shielding layer, an aluminum foil shielding layer, and a high-temperature resistant protective sleeve; the first insulating sleeve is installed inside the protective outer sleeve; the first pressure-resistant inner sleeve is installed inside the first insulating sleeve, and the use of the first insulating sleeve and the first pressure-resistant inner sleeve can achieve a preliminary pressure-resistant insulation protection effect.

[0008] Preferably, the inner side of the first pressure-resistant inner sleeve is provided with a braided shielding layer made of copper or aluminum strip; an aluminum foil shielding layer is provided inside the braided shielding layer; and a high-temperature resistant protective sleeve is provided inside the aluminum foil shielding layer. At the same time, the braided shielding layer and the aluminum foil shielding layer can reduce electromagnetic interference, while the high-temperature resistant protective sleeve can play a role in high-temperature protection.

[0009] As a preferred embodiment, the compression-resistant and tear-resistant assembly includes a second insulating sleeve, a second compression-resistant inner sleeve, a tear-resistant protective sleeve, an elastic buffer cavity, and an elastic inner pressure dividing strip; the double-core wire body is provided with a second insulating sleeve; the inner side of the second insulating sleeve is provided with a second compression-resistant inner sleeve, and the use of the second insulating sleeve and the second compression-resistant inner sleeve can achieve the purpose of double reinforcement of insulation and compression protection.

[0010] Preferably, the inner side of the second pressure-resistant inner sleeve is provided with a tear-resistant protective sleeve; the inside of the tear-resistant protective sleeve is provided with an elastic buffer cavity; the inner wall of the tear-resistant protective sleeve is provided with elastic inner pressure strips distributed in a ring at equal intervals. When it is subjected to a large external force, the elastic inner pressure strips can play an elastic pressure-resistant protection role.

[0011] As a preferred embodiment, the buffer and compression-resistant component includes a compression-resistant sleeve, an elastic sealing ring, a buffer groove, a limiting sleeve plate, a limiting groove, a pressure-distributing support block, a fitting inner buffer sleeve, a connecting protective sleeve, a filling groove, and a wire core; the inner side of the elastic inner pressure-distributing strip is provided with a compression-resistant sleeve; the outer side of the compression-resistant sleeve is provided with an elastic sealing ring, which can achieve an elastic sealing and protective effect.

[0012] Preferably, the extrusion-resistant sleeve has a buffer groove inside; a limiting sleeve frame plate is fixedly connected to the inner wall of the extrusion-resistant sleeve; a limiting groove is opened inside the limiting sleeve frame plate; a pressure-dividing support block is provided inside the limiting groove, and the pressure-dividing support block can perform buffering movement in the limiting groove opened inside the limiting sleeve frame plate, thereby playing a limiting buffering protection role.

[0013] Preferably, the inner side of the pressure-dividing support block is provided with a fitting buffer inner sleeve; the inner side of the fitting buffer inner sleeve is provided with a connecting protective sleeve; a filling groove is opened inside the connecting protective sleeve; the filling groove is provided with a wire core, and the fitting buffer inner sleeve and the connecting protective sleeve can provide efficient protection for the wire core.

[0014] The beneficial effects of this invention are:

[0015] 1. The use of insulation shielding components can improve the overall stability and safety of the outer protective cable sleeve. The use of compression and tear-resistant components can provide tear and abrasion protection for the double-core wire body. At the same time, the use of buffer and compression-resistant components can provide double buffer and compression-resistant protection. Compared with the simple structure of double-core flexible wires used for copper core PVC insulated stranded connections on the market, most of which only have a single compression protection structure and lack double buffer and compression-resistant protection function, when double-core flexible wires are subjected to large external forces, they are prone to deformation and tearing. This double-core flexible wire can provide double high-efficiency compression-resistant buffer protection.

[0016] 2. The use of corrosion-resistant layer can extend the service life of protective outer sleeve, while the use of protective outer sleeve can provide additional mechanical protection and moisture protection. The use of first insulating sleeve and first pressure-resistant inner sleeve can achieve preliminary pressure-resistant insulation protection. At the same time, the use of braided shielding layer and aluminum foil shielding layer can reduce electromagnetic interference, while the use of high temperature resistant protective sleeve can achieve high temperature protection.

[0017] 3. The use of the second insulating sleeve and the second pressure-resistant inner sleeve can achieve the purpose of double reinforcement, insulation and pressure resistance protection. When it is subjected to a large external force, the elastic inner pressure dividing strip can play an elastic pressure resistance protection role, and the elastic sealing ring can play an elastic sealing protection role. The pressure dividing support block can play a buffering role in the limiting groove opened inside the limiting sleeve plate, thereby playing a limiting buffer protection role. The use of the fitting buffer inner sleeve and the connecting protective sleeve can play an efficient protection role for the wire core. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of the dual-core flexible wire of the present invention.

[0019] Figure 2 The diagram shown is a schematic representation of the internal structure of the outer protective sheath of the dual-core flexible wire of the present invention.

[0020] Figure 3 The diagram shown is a three-dimensional structural schematic of the dual-core flexible wire body of the present invention.

[0021] Figure 4 The diagram shown is a partial three-dimensional structural schematic of the pressure-resistant and tear-resistant component of the dual-core flexible wire of the present invention.

[0022] Figure 5 The diagram shows the internal three-dimensional structure of the tear-resistant protective sleeve of the dual-core flexible wire of the present invention.

[0023] Figure 6 The diagram shown is a three-dimensional structural representation of the internal structure of the compression-resistant sleeve of the dual-core flexible wire of the present invention.

[0024] Figure 7 The diagram shows a three-dimensional structural schematic of the inner sleeve for the bonding buffer of the dual-core flexible wire of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Outer protective sleeve; 2. Dual-core wire body; 3. Insulation and shielding assembly; 4. Compression-resistant and tear-resistant assembly; 5. Buffer and compression-resistant assembly; 101. Protective outer sleeve; 102. Protective cavity; 103. Corrosion-resistant layer; 301. First insulating sleeve; 302. First compression-resistant inner sleeve; 303. Braided shielding layer; 304. Aluminum foil shielding layer; 305. High-temperature resistant protective sleeve; 401. Second insulating sleeve 402. Second pressure-resistant inner sleeve; 403. Tear-resistant protective sleeve; 404. Elastic buffer cavity; 405. Elastic inner pressure dividing strip; 501. Extrusion-resistant sleeve; 502. Elastic sealing ring; 503. Buffer groove; 504. Limiting sleeve plate; 505. Limiting groove; 506. Pressure dividing support block; 507. Fitting buffer inner sleeve; 508. Connecting protective sleeve; 509. Filling groove; 510. Wire core. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Please see Figure 1-3This invention provides an embodiment of a copper-core PVC insulated stranded double-core flexible wire, comprising an outer protective sheath 1, a double-core wire body 2, an insulation shielding assembly 3, a pressure-resistant and tear-resistant assembly 4, and a cushioning and compression-resistant assembly 5; the double-core wire body 2 is disposed inside the outer protective sheath 1; the insulation shielding assembly 3 for overall insulation and fire-resistant protection is disposed inside the outer protective sheath 1; the pressure-resistant and tear-resistant assembly 4 for tear and abrasion resistance protection is disposed inside the double-core wire body 2; and the cushioning and compression-resistant assembly 5 for enhanced pressure resistance protection is disposed inside the pressure-resistant and tear-resistant assembly 4. The use of insulation shielding component 3 can improve the overall stability and safety of the outer protective sleeve 1, while the use of compression and tear resistant component 4 can provide tear and abrasion resistant protection for the double-core wire body 2. At the same time, the use of buffer compression resistant component 5 can provide double buffer compression and compression resistant protection, further improving the stability of the double-core wire body 2. The outer protective sleeve 1 includes a protective outer sleeve 101, a protective cavity 102, and a corrosion resistant layer 103; the outer protective sleeve 1 is provided with a protective outer sleeve 101 made of polyvinyl chloride material inside; the protective outer sleeve... The protective sleeve 101 has a protective cavity 102 inside; the outer surface of the protective outer sleeve 101 is coated with a corrosion-resistant layer 103, which can improve the service life of the protective outer sleeve 101, and the protective outer sleeve 101 can provide additional mechanical protection and moisture protection. The insulating shielding assembly 3 includes a first insulating sleeve 301, a first pressure-resistant inner sleeve 302, a braided shielding layer 303, an aluminum foil shielding layer 304, and a high-temperature resistant protective sleeve 305; the first insulating sleeve 301 is installed inside the protective outer sleeve 101; the first insulating sleeve 301 is inside... A first pressure-resistant inner sleeve 302 is installed on the side. The use of the first insulating sleeve 301 and the first pressure-resistant inner sleeve 302 can achieve the initial pressure-resistant insulation protection effect. The inner side of the first pressure-resistant inner sleeve 302 is provided with a braided shielding layer 303 made of copper or aluminum strip. An aluminum foil shielding layer 304 is provided inside the braided shielding layer 303. A high-temperature resistant protective sleeve 305 is provided inside the aluminum foil shielding layer 304. At the same time, the use of the braided shielding layer 303 and the aluminum foil shielding layer 304 can reduce electromagnetic interference, while the use of the high-temperature resistant protective sleeve 305 can play a role in high-temperature protection.

[0028] Please see Figure 4-5In this embodiment, the pressure-resistant and tear-resistant component 4 includes a second insulating sleeve 401, a second pressure-resistant inner sleeve 402, a tear-resistant protective sleeve 403, an elastic buffer cavity 404, and elastic inner pressure dividing strips 405. The double-core wire body 2 is provided with a second insulating sleeve 401 inside. The second pressure-resistant inner sleeve 402 is provided inside the second insulating sleeve 401. The use of the second insulating sleeve 401 and the second pressure-resistant inner sleeve 402 can achieve the purpose of double reinforcement of insulation and pressure resistance protection. The tear-resistant protective sleeve 403 is provided inside the second pressure-resistant inner sleeve 402. An elastic buffer cavity 404 is opened inside the tear-resistant protective sleeve 403. Elastic inner pressure dividing strips 405 are distributed circumferentially and equidistantly on the inner wall of the tear-resistant protective sleeve 403. When it is subjected to a large external force, the elastic inner pressure dividing strips 405 can play an elastic pressure-resistant protection role.

[0029] Please see Figure 6-7 In this embodiment, the buffer and compression-resistant assembly 5 includes a compression-resistant sleeve 501, an elastic sealing ring 502, a buffer groove 503, a limiting sleeve plate 504, a limiting groove 505, a pressure-dividing support block 506, a fitting buffer inner sleeve 507, a connecting protective sleeve 508, a filling groove 509, and a wire core 510; the compression-resistant sleeve 501 is provided inside the elastic inner pressure-dividing strip 405; the elastic sealing ring 502 is sleeved on the outside of the compression-resistant sleeve 501, which can provide elastic sealing protection; the compression-resistant sleeve 501 has a buffer groove 503 inside; the limiting sleeve plate 504 is fixedly connected to the inner wall of the compression-resistant sleeve 501. 04; A limiting groove 505 is provided inside the limiting sleeve plate 504; A pressure-dividing support block 506 is provided inside the limiting groove 505. The pressure-dividing support block 506 can perform buffering movement in the limiting groove 505 inside the limiting sleeve plate 504, thereby playing a limiting buffering and protective role. A fitting buffer inner sleeve 507 is provided inside the pressure-dividing support block 506; A connecting protective sleeve 508 is provided inside the fitting buffer inner sleeve 507; A filling groove 509 is provided inside the connecting protective sleeve 508; A wire core 510 is provided in the filling groove 509. The fitting buffer inner sleeve 507 and the connecting protective sleeve 508 can achieve an efficient protection effect for the wire core 510.

[0030] During operation, the corrosion-resistant layer 103 can extend the service life of the protective outer sleeve 101, while the protective outer sleeve 101 can provide additional mechanical protection and moisture protection. The first insulating sleeve 301 and the first pressure-resistant inner sleeve 302 can provide initial pressure-resistant insulation protection. At the same time, the braided shielding layer 303 and the aluminum foil shielding layer 304 can reduce electromagnetic interference, while the high-temperature resistant protective sleeve 305 can provide high-temperature protection.

[0031] Then, the second insulating sleeve 401 and the second pressure-resistant inner sleeve 402 can achieve the purpose of double reinforcement of insulation and pressure resistance protection;

[0032] When subjected to a large external force, the elastic inner pressure strip 405 can provide elastic pressure resistance protection, the elastic sealing ring 502 can provide elastic sealing protection, the pressure support block 506 can perform buffering movement in the limiting groove 505 opened inside the limiting sleeve plate 504, thereby providing limiting buffer protection, and the fitting buffer inner sleeve 507 and connecting protective sleeve 508 can provide efficient protection for the wire core 510.

[0033] Through the above steps, the insulation shielding component 3 can improve the overall stability and safety of the outer protective sheath 1. The pressure-resistant and tear-resistant component 4 can provide tear-resistant and abrasion-resistant protection for the double-core wire body 2. At the same time, the buffer and compression-resistant component 5 can provide double buffer and pressure-resistant protection, further improving the stability of the double-core wire body 2. This solves the problem that in the use of double-core flexible wires, most of them only have a single pressure-resistant protection structure and lack double buffer and compression-resistant protection function. When the double-core flexible wire is subjected to a large external force, it is easy to deform and tear.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A copper-core, polyvinyl chloride-insulated, stranded, double-core flexible wire for connection, comprising an outer protective sheath (1); characterized in that: It also includes a double-core wire body (2), an insulation shielding assembly (3), a pressure-resistant and tear-resistant assembly (4), and a buffer compression-resistant assembly (5); the outer protective sleeve (1) contains the double-core wire body (2); the outer protective sleeve (1) contains the insulation shielding assembly (3) for overall insulation and fire-resistant protection; the double-core wire body (2) contains the pressure-resistant and tear-resistant assembly (4) for tear-resistant and abrasion-resistant protection; the pressure-resistant and tear-resistant assembly (4) contains the buffer compression-resistant assembly (5) for enhanced pressure-resistant protection, the pressure-resistant and tear-resistant assembly (4) includes a second insulating sleeve (401), a second pressure-resistant inner sleeve (402), a tear-resistant protective sleeve (403), an elastic buffer cavity (404), and an elastic inner pressure dividing strip (405); the double-core wire body (2) contains the second insulating sleeve (401); the second insulating sleeve (401) The inner side of the first sleeve is provided with a second pressure-resistant inner sleeve (402), and the inner side of the second pressure-resistant inner sleeve (402) is provided with a tear-resistant protective sleeve (403); the tear-resistant protective sleeve (403) is provided with an elastic buffer cavity (404); the inner wall of the tear-resistant protective sleeve (403) is provided with an elastic inner pressure dividing strip (405) distributed in a ring at equal intervals. The buffer and compression-resistant component (5) includes a compression-resistant sleeve (501), an elastic sealing ring (502), a buffer groove (503), a limiting sleeve plate (504), a limiting groove (505), a pressure dividing support block (506), a fitting buffer inner sleeve (507), a connecting protective sleeve (508), a filling groove (509), and a wire core (510); the inner side of the elastic inner pressure dividing strip (405) is provided with a compression-resistant sleeve (501); the outer side of the compression-resistant sleeve (501) is provided with an elastic sealing ring (502).

2. The copper-core PVC-insulated stranded double-core flexible wire for connection according to claim 1, characterized in that: The outer protective sleeve (1) includes a protective outer sleeve (101), a protective cavity (102), and a corrosion-resistant layer (103); the outer protective sleeve (1) is provided with a protective outer sleeve (101) made of polyvinyl chloride material; a protective cavity (102) is provided inside the protective outer sleeve (101); and a corrosion-resistant layer (103) is coated on the outer surface of the protective outer sleeve (101).

3. The copper-core PVC-insulated stranded double-core flexible wire for connection according to claim 2, characterized in that: The insulating shielding assembly (3) includes a first insulating sleeve (301), a first pressure-resistant inner sleeve (302), a braided shielding layer (303), an aluminum foil shielding layer (304), and a high-temperature resistant protective sleeve (305); the first insulating sleeve (301) is installed inside the protective outer sleeve (101); the first pressure-resistant inner sleeve (302) is installed inside the first insulating sleeve (301).

4. A copper-core, polyvinyl chloride-insulated, stranded, double-core flexible wire for connection according to claim 3, characterized in that: The inner side of the first pressure-resistant inner sleeve (302) is provided with a braided shielding layer (303) made of copper or aluminum strip; the inner side of the braided shielding layer (303) is provided with an aluminum foil shielding layer (304); the inner side of the aluminum foil shielding layer (304) is provided with a high-temperature resistant protective sleeve (305).

5. A copper-core, polyvinyl chloride-insulated, stranded, double-core flexible wire for connection according to claim 1, characterized in that: The compression-resistant sleeve (501) has a buffer groove (503) inside; a limiting sleeve frame plate (504) is fixedly connected to the inner wall of the compression-resistant sleeve (501); a limiting groove (505) is opened inside the limiting sleeve frame plate (504); a pressure-dividing support block (506) is provided inside the limiting groove (505).

6. A copper-core, polyvinyl chloride-insulated, stranded, double-core flexible wire for connection according to claim 4, characterized in that: The pressure divider support block (506) has a fitting buffer inner sleeve (507) on its inner side; the fitting buffer inner sleeve (507) has a connecting protective sleeve (508) on its inner side; the connecting protective sleeve (508) has a filling groove (509) inside; the filling groove (509) has a wire core (510).

Images