A parallel cable or optical cable or optical-electrical hybrid cable
Through the design of parallel cables or optical cables, the structure of outer cover and closure strips is used to solve the problem of high cost and inconvenient protection in electrical units and loose sleeves in cables and optical cables, and the flexible separation and fixation of cables and optical cables is achieved. Reduces production costs and improves the security of the access network.
Patent Information
- Application Number
- CN202010133048.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-03-01
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2040-03-01
AI Technical Summary
During the production process, existing cables and optical cables need to be added to color masters to distinguish between electrical units and loose sleeves, resulting in increased costs and cannot effectively protect backup electrical units or loose sleeves that do not require access to the network during the access network. .
A parallel cable or optical cable design consisting of an outer cover layer, an electrical unit or a loose sleeve is used to connect the electrical unit or optical unit by setting a cavity, a clamping component and a closure strip on the outer cover layer. , realizes flexible separation and fixation of electrical units or loose sleeves, avoids the use of color masterbatch, and distinguishes the order of electrical units by the color of the closed strip.
It realizes simple access to electrical units and loose sleeves, saves materials, prevents dust and is convenient for separation, and avoids the use of color masterbing, reduces production costs, and prevents misconnected lines and short circuits.
Smart Images
Figure CN111210932B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of cables, and in particular relates to a parallel electric cable or an optical cable or an optoelectronic hybrid cable. Background Art
[0002] Electrical and optical cables are the blood vessels of the power and communications sectors, connecting every aspect of people's lives.
[0003] In the prior art, an electric cable or an optical cable is composed of a plurality of electrical units or loose tubes and an outer sheath extruded outside the electrical units or loose tubes. The electrical units and loose tubes in the electric cable and the optical cable are distinguished by adding masterbatches of different colors to the natural color insulation layer material and the loose tube material during the production process.
[0004] The above-mentioned prior art has the following shortcomings: 1. The electrical unit or loose tube needs to be distinguished by adding masterbatch, which is expensive and is not conducive to reducing the cost of cables or optical cables; 2. During the network access process, after the required length of the sheath is stripped off and the electrical unit or loose tube that needs to be accessed is connected to the network, the spare electrical unit or loose tube that does not need to be accessed to the network cannot be effectively protected. Summary of the invention
[0005] To solve the above problems, the purpose of the present invention is to disclose a parallel cable or optical cable or optoelectronic hybrid cable, which is implemented by adopting the following technical solution.
[0006] A parallel cable, consisting of an outer sheath and at least one group of electrical units, wherein the same group of electrical units consists of at least two electrical units, wherein the electrical unit consists of a conductor and an insulating layer extruded outside the conductor, wherein the outer sheath consists of an outer sheath body, wherein when there is a group of electrical units, a cavity is formed inside the outer sheath body, and an opening is formed on the outer sheath body, and when there are two or more groups of electrical units, a partition component is further provided inside the outer sheath body, wherein the partition component has a plurality of partition edges, and the interior of the outer sheath body is divided into a plurality of cavities, and each cavity corresponds to An opening is formed on the outer sheath body, and two clamping parts are formed on the outer sheath body on both sides of the opening. A closing strip is provided in the opening, and the closing strip is composed of a closing strip body. Two clamping grooves are formed on both sides of the closing strip body. The closing strip is fixed to the outer sheath by clamping the clamping parts with the clamping grooves. The electrical units in the same group are connected together in pairs through connecting parts to form parallel electrical units. A parallel electrical unit is provided in each cavity, and the first electrical unit in the parallel electrical units is also connected to the closing strip through a connecting part, and the connecting part is made of a soft and easy-to-tear material.
[0007] The parallel cable described above is characterized in that the material of the insulating layer is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0008] The parallel cable described above is characterized in that the material of the conductor is copper or aluminum.
[0009] A parallel optical cable is composed of an outer sheath and at least one group of loose tubes. At least one optical communication component is arranged in the loose tubes. The outer sheath is characterized in that the outer sheath is composed of an outer sheath body. When there is one group of loose tubes, a cavity is formed inside the outer sheath body, and an opening is formed on the outer sheath body. When there are two or more groups of loose tubes, a partition component is further arranged in the outer sheath body. The partition component is composed of a plurality of partition edges, and the interior of the outer sheath body is divided into a plurality of cavities. An opening is formed on the outer sheath body corresponding to each cavity. Two clamping components are formed on the outer sheath body at both sides of the opening. A closing strip is arranged in the opening. The closing strip is composed of a closing strip body. Two clamping grooves are formed on both sides of the closing strip body. The closing strip is fixed to the outer sheath by clamping with the clamping component through the clamping groove. The loose tubes in the same group are connected together in pairs by connecting components to form a parallel optical unit. A parallel optical unit is arranged in each cavity. The first loose tube in the parallel optical unit is also connected to the closing strip by a connecting component. The connecting component is made of a soft and tearable material.
[0010] The parallel optical cable described above is characterized in that the optical communication component is a G.652 optical fiber, a G.653 optical fiber, a G.654 optical fiber, a G.655 optical fiber, a G.656 optical fiber, a G.657 optical fiber, an A1a optical fiber, an A1b optical fiber, or an A1c optical fiber.
[0011] The parallel optical cable described above is characterized in that the optical communication component can also be an optical fiber ribbon formed by at least two optical fibers being bundled together, or an optical fiber ribbon body formed by at least two optical fiber ribbons being stacked.
[0012] The parallel cable described above is characterized in that the material of the loose tube is modified polypropylene or polybutylene terephthalate.
[0013] A parallel photoelectric hybrid cable is composed of an outer sheath, at least one group of loose tubes and at least one group of electrical units. At least one optical communication component is arranged in the loose tube. The electrical unit is composed of a conductor and an insulating layer extruded outside the conductor. The invention is characterized in that the outer sheath is composed of an outer sheath body. A partition component is also arranged in the outer sheath body. The partition component has a plurality of partition edges, and the interior of the outer sheath body is divided into a plurality of cavities. An opening is formed on the outer sheath body corresponding to each cavity. Two clamping components are formed on the outer sheath body at both sides of the opening. A closing strip is arranged in the opening. The closing strip is composed of a closing strip body. Two clamping grooves are formed on both sides of the closing strip body. The closing strip is fixed to the outer sheath by clamping with the clamping component through the clamping groove. The loose tubes or electrical units in the same group are connected together in pairs through connecting components to form parallel optical units or parallel electrical units. A parallel optical unit or parallel electrical unit is arranged in each cavity. The first loose tube or electrical unit in the parallel optical unit or parallel electrical unit is also connected to the closing strip through the connecting component. The connecting component is made of a soft and tearable material.
[0014] The above-mentioned parallel optoelectronic hybrid cable is characterized in that the optical communication component is G.652 optical fiber, G.653 optical fiber, G.654 optical fiber, G.655 optical fiber, G.656 optical fiber, G.657 optical fiber, A1a optical fiber, A1b optical fiber or A1c optical fiber.
[0015] The parallel optoelectronic hybrid cable described above is characterized in that the optical communication component can also be an optical fiber ribbon formed by at least two optical fibers being bundled together, or an optical fiber ribbon body formed by at least two optical fiber ribbons being stacked.
[0016] The above-mentioned parallel optoelectronic hybrid cable is characterized in that the material of the loose tube is modified polypropylene or polybutylene terephthalate.
[0017] The above-mentioned parallel optoelectronic hybrid cable is characterized in that the material of the insulating layer is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0018] The above-mentioned parallel optoelectronic hybrid cable is characterized in that the material of the conductor is copper, aluminum or alloy.
[0019] The parallel cable or optical cable or optoelectronic hybrid cable described above is characterized in that a reinforcing member is also provided in the partition component.
[0020] The parallel cable or optical cable or optoelectronic hybrid cable described above is characterized in that the reinforcement member is phosphated steel wire or stainless steel wire or glass fiber reinforced plastic rod.
[0021] The parallel cable or optical cable or optoelectronic hybrid cable described above is characterized in that the material of the outer sheath body is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0022] The parallel cable or optical cable or optoelectronic hybrid cable described above is characterized in that the material of the sealing strip body is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0023] The parallel cable or optical cable or optoelectronic hybrid cable described above is characterized in that the material of the connecting component is polyester film.
[0024] In the present invention, when the cable is being laid, the closing strip of the corresponding cavity is pulled open, the first electric unit in the parallel electric unit is directly pulled out of the cavity along the closing strip, the connecting component between the closing strip and the first electric unit is cut or torn to open a longer section of the closing strip; then a section of the connecting component between the first electric unit and the second electric unit is cut to open the first electric unit to a required length, the length of the first electric unit being opened is shorter than the length of the closing strip; then the second electric unit is pulled out in the same way, a section of the closing strip with the same distance as the distance between the first electric unit and the second electric unit is cut on the closing strip, and the closing strip is embedded in the opening between the first electric unit and the second electric unit. In this way, the corresponding closing strips can be embedded between all adjacent electric units in the parallel electric unit, which can fix the electric unit and prevent dust from entering the cavity without turning the cut closing strip into construction waste. The order of the electric units can also be identified according to the order of exposure to the outside of the outer sheath to prevent wrong wiring and line short circuit.
[0025] In the present invention, the internal electric unit or loose tube can be directly pulled out when the closing strip is pulled open, which is simple and convenient; the closing strip can be re-embedded in the opening without damaging the outer protective layer; the order in which the electric units or loose tubes are connected in parallel can be directly used for the arrangement order of the electric units, and there is no need to classify the insulating layer or the loose tube by chromatography, thus saving the practical use of masterbatch materials and saving costs; the connecting component adopts polyester film, which is soft and does not occupy a large amount of space in the cavity, is relatively light, and is easy to separate; when there are multiple cavities, the internal electric units or optical units can be distinguished by extruding materials outside the closing strip or adding masterbatch in the closing strip, thus saving masterbatch, and at the same time, the color of the closing strip can also be used as a method for distinguishing other cables.
[0026] Therefore, the present invention has the advantages of simple structure, convenient access to the electric unit and the loose tube, material saving, colorless identification, dust prevention, convenient separation, and fixability of the electric unit and the loose tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1It is a schematic diagram of the three-dimensional structure of Example 1 of the present invention.
[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the outer protective layer of Example 1 of the present invention.
[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of Example 2 of the present invention.
[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of Example 3 of the present invention.
[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the parallel electrical units of Embodiment 1, Embodiment 2 and Embodiment 3 of the present invention.
[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the sealing strip of the present invention.
[0033] Figure 7 This is a schematic diagram of the three-dimensional wiring structure of Example 1 of the present invention.
[0034] In the figure: 1. outer sheath, 11. outer sheath body, 12. opening, 13. snap-fit component, 14. cavity, 15. reinforcement, 16. partition component, 2. closing strip, 21. closing strip body, 22. slot, 3. insulating layer, 4. conductor, 5. loose tube, 6. optical communication component, 7. connecting component. DETAILED DESCRIPTION
[0035] Example 1
[0036] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7A parallel cable, consisting of an outer sheath 1 and two groups of electrical units, one group of electrical units consists of at least two electrical units, the electrical unit consists of a conductor 4 and an insulating layer 3 extruded outside the conductor 4, characterized in that the outer sheath consists of an outer sheath body 11 and a partition component 16, the partition component 16 divides the inner part of the outer sheath body 11 into two cavities 14, two openings 12 are formed on the outer sheath body 11 corresponding to each cavity 14, two clamping components 13 are formed on the outer sheath body 11 on both sides of the opening 12, and the partition component 16 has two openings 12 formed on the outer sheath body 11 on both sides of the opening 12. A reinforcement member 15 is provided, and a closing strip 2 is provided in the opening 12. The closing strip 2 is composed of a closing strip body 21. Two card slots 22 are formed on both sides of the closing strip body 21. The closing strip 2 is engaged with the card-connecting component 13 through the card slots 22 and is fixed to the outer sheath 1. The electrical units in the same group are connected together in pairs through connecting components 7 to form two parallel electrical units, which are respectively placed in two cavities 14. The first electrical unit in the parallel electrical units is also connected to the closing strip 2 through the connecting component 7. The connecting component 7 is made of a soft and easy-to-tear material.
[0037] The parallel cable described in the above embodiment is characterized in that the material of the insulating layer 3 is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0038] The parallel cable described in the above embodiment is characterized in that the material of the conductor 4 is copper or aluminum.
[0039] The parallel cable described in the above embodiment is characterized in that the reinforcement member 15 is a phosphating steel wire or a stainless steel wire or a glass fiber reinforced plastic rod.
[0040] Example 2
[0041] Please see Figure 3 , Figure 5 , Figure 6A parallel cable, consisting of an outer sheath 1 and a group of electrical units, the same group of electrical units consists of at least two electrical units, the electrical unit consists of a conductor 4 and an insulating layer 3 extruded outside the conductor 4, characterized in that the outer sheath consists of an outer sheath body 11, a cavity 14 is formed inside the outer sheath body 11, an opening 12 is formed on the outer sheath body 11, two clamping parts 13 are formed on the outer sheath body 11 on both sides of the opening 12, a closing strip 2 is provided in the opening 12, the closing strip 2 consists of a closing strip body 21, two clamping grooves 22 are formed on both sides of the closing strip body 21, the closing strip 2 is fixed to the outer sheath 1 by clamping with the clamping part 13 through the clamping groove 22, the electrical units in the same group are connected together in pairs by connecting parts 7 to form parallel electrical units, which are placed in the cavity 14, the first electrical unit in the parallel electrical units is also connected to the closing strip 2 by the connecting part 7, and the connecting part 7 is made of a soft and easy-to-tear material.
[0042] The parallel cable described in the above embodiment is characterized in that the material of the insulating layer 3 is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0043] The parallel cable described in the above embodiment is characterized in that the material of the conductor 4 is copper or aluminum.
[0044] Please see Figure 4 , Figure 5 , Figure 6A parallel optoelectronic hybrid cable, consisting of an outer sheath 1, a group of electrical units and two groups of loose tubes 5, wherein the same group of electrical units consists of at least two electrical units, and the same group of loose tube 5 units consists of at least two loose tubes 5, wherein the electrical unit consists of a conductor 4 and an insulating layer 3 extruded outside the conductor 4, and at least one optical communication component 6 is arranged in the loose tube 5, characterized in that the outer sheath consists of an outer sheath body 11 and a partition component 16, wherein the partition component 16 has three partition edges, and the interior of the outer sheath body 11 is divided into three cavities 14, and an opening 12 is formed on the outer sheath body 11 corresponding to each cavity 14, and two clamping components 13 are formed on the outer sheath body 11 on both sides of the opening 12, and a partition component 16 is arranged in the center A reinforcement member 15, a closing strip 2 is arranged in the opening 12, the closing strip 2 is composed of a closing strip body 21, two slots 22 are formed on both sides of the closing strip body 21, the closing strip 2 is engaged with the clamping component 13 through the slots 22 and fixed to the outer sheath 1, the electrical units in the same group are connected together in pairs through the connecting component 7 to form a parallel electrical unit, the loose sleeves 5 in the same group are connected together in pairs through the connecting component 7 to form two parallel optical units, one parallel electrical unit and two parallel optical units are respectively placed in three cavities 14, the first electrical unit in the parallel electrical unit and the first loose sleeve 5 in the parallel optical unit are also connected to the closing strip 2 through the connecting component 7, and the connecting component 7 is a soft and easy-to-tear material.
[0045] The parallel optoelectronic hybrid cable described in the above embodiment is characterized in that the optical communication component 6 is G.652 optical fiber, G.653 optical fiber, G.654 optical fiber, G.655 optical fiber, G.656 optical fiber, G.657 optical fiber, A1a optical fiber, A1b optical fiber or A1c optical fiber.
[0046] The parallel optoelectronic hybrid cable described in the above embodiment is characterized in that the optical communication component 6 can also be an optical fiber ribbon formed by at least two optical fibers being bundled together, or an optical fiber ribbon body formed by at least two optical fiber ribbons being stacked.
[0047] The parallel optoelectronic hybrid cable described in the above embodiment is characterized in that the material of the loose tube 5 is modified polypropylene or polybutylene terephthalate.
[0048] The parallel optoelectronic hybrid cable described in the above embodiment is characterized in that the material of the insulating layer 3 is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin, or polyvinyl chloride.
[0049] The parallel optoelectronic hybrid cable described in the above embodiment is characterized in that the material of the conductor 4 is copper or aluminum.
[0050] Example 4
[0051] A parallel optical cable is composed of an outer sheath 1 and a group of loose tubes 5. At least one optical communication component 6 is arranged in the loose tubes 5. The outer sheath is characterized in that the outer sheath is composed of an outer sheath body 11, a cavity 14 is formed inside the outer sheath body 11, an opening 12 is formed on the outer sheath body 11, two clamping components 13 are formed on the outer sheath body 11 on both sides of the opening 12, a closing strip 2 is arranged in the opening 12, the closing strip 2 is composed of a closing strip body 21, two clamping grooves 22 are formed on both sides of the closing strip body 21, the closing strip 2 is fixed to the outer sheath 1 by clamping with the clamping component 13 through the clamping groove 22, the loose tubes 5 in the same group are connected together in pairs through a connecting component 7 to form a parallel optical unit placed in the cavity 14, the first optical unit in the parallel optical unit is also connected to the closing strip 2 through the connecting component 7, and the connecting component 7 is made of a soft and tearable material.
[0052] The parallel optical cable described in the above embodiment is characterized in that the optical communication component 6 is a G.652 optical fiber, a G.653 optical fiber, a G.654 optical fiber, a G.655 optical fiber, a G.656 optical fiber, a G.657 optical fiber, an A1a optical fiber, an A1b optical fiber, or an A1c optical fiber.
[0053] The parallel optical cable described in the above embodiment is characterized in that the optical communication component 6 can also be an optical fiber ribbon formed by at least two optical fibers being bundled together, or an optical fiber ribbon body formed by at least two optical fiber ribbons being stacked.
[0054] The parallel optical cable described in the above embodiment is characterized in that the material of the loose tube 5 is modified polypropylene or polybutylene terephthalate.
[0055] A parallel cable or optical cable or optoelectronic hybrid cable as described in any of the above embodiments is characterized in that the material of the outer sheath body 11 is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0056] A parallel cable or optical cable or optoelectronic hybrid cable as described in any of the above embodiments is characterized in that the material of the sealing strip body 21 is low-density polyethylene, medium-density polyethylene, high-density polyethylene, flame-retardant polyolefin or polyvinyl chloride.
[0057] A parallel cable or optical cable or optoelectronic hybrid cable as described in any of the above embodiments is characterized in that the material of the connecting component 7 is polyester film.
[0058] In the present invention, when the cable is being laid, the closing strip 2 of the corresponding cavity is pulled open, the first electric unit in the parallel electric unit is directly pulled out of the cavity 14 along the closing strip 2, the connecting component 7 between the closing strip 2 and the first electric unit is cut or torn open, and the closing strip 2 is pulled open by a longer section; then the connecting component 7 between the first electric unit and the second electric unit is cut open, and the first electric unit is pulled open by a required length, and the length of the first electric unit pulled open is shorter than the length of the closing strip 2 pulled open; then the second electric unit is pulled out in the same way, and a section of the closing strip 2 with the same distance as the distance between the pulled out first electric unit and the second electric unit is cut on the closing strip 2, and embedded in the opening 12 between the first electric unit and the second electric unit, so that the corresponding closing strips 2 can be embedded between all adjacent electric units in the parallel electric unit, which can fix the electric unit and prevent dust from entering the cavity 14, and will not make the cut closing strips 2 become construction waste, and the order of the electric units can be identified according to the order of exposure outside the outer sheath 1, to prevent wrong wiring and cause line short circuit.
[0059] In the present invention, the internal electrical unit or loose tube 5 can be directly pulled out when the closing strip 2 is pulled open, which is simple and convenient; the closing strip 2 can be re-embedded in the opening 12 without damaging the outer sheath 1; the order in which the electrical units or loose tubes 4 are connected in parallel can be directly used for the arrangement order of the electrical units, and there is no need to classify the insulating layer 3 or the loose tube by chromatography, which saves the practical use of masterbatch materials and saves costs; the connecting component 7 is made of polyester film, which is soft and does not occupy a large amount of space in the cavity 14, and is relatively light and easy to separate; when there are multiple cavities 14, the internal electrical units or optical units can be distinguished by extruding materials outside the closing strip 2 or adding masterbatches in the closing strip 2, which saves masterbatches, and at the same time, the color of the closing strip 2 can also be used as a method for distinguishing other cables.
[0060] The present invention solves the problem that electric units or loose tubes need to be distinguished by adding masterbatches, the masterbatches are expensive, and this is not conducive to reducing the cost of electric cables or optical cables; and the problem that in the process of accessing the network, after the sheath of the required length is stripped off and the electric units or loose tubes to be accessed are accessed to the network, the spare electric units or loose tubes that do not need to be accessed to the network cannot be effectively protected.
[0061] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.
Claims
1. A parallel cable, comprising an outer sheath (1) and at least one group of electrical units, wherein the same group of electrical units comprises at least two electrical units, wherein the electrical units comprise a conductor (4) and an insulating layer (3) extruded outside the conductor (4), characterized in that The outer sheath is composed of an outer sheath body (11). When there is a group of electrical units, a cavity (14) is formed inside the outer sheath body (11), and an opening (12) is formed on the outer sheath body (11). When there are two or more groups of electrical units, a partition component (16) is further provided inside the outer sheath body (11). The partition component (16) is composed of a plurality of partition edges, and divides the interior of the outer sheath body (11) into a plurality of cavities (14). An opening (12) is formed on the outer sheath body (11) corresponding to each cavity (14). The outer sheath body (11) on both sides of the opening (12) has a plurality of partition edges. Two clamping parts (13) are formed, a closing strip (2) is arranged in the opening (12), the closing strip (2) is composed of a closing strip body (21), two clamping grooves (22) are formed on both sides of the closing strip body (21), the closing strip (2) is clamped with the clamping part (13) through the clamping grooves (22) and fixed to the outer sheath (1), the electrical units in the same group are connected together in pairs through the connecting part (7) to form parallel electrical units, each containing cavity (14) is provided with a parallel electrical unit, and the first electrical unit in the parallel electrical unit is also connected to the closing strip (2) through the connecting part (7), and the material of the connecting part is polyester film; When the parallel cable is laid, the closing strip (2) of the corresponding cavity is pulled open, and the first electrical unit in the parallel electrical unit is directly pulled out of the cavity (14) along the closing strip (2), and a hole is cut or torn in the connecting component (7) between the closing strip (2) and the first electrical unit, and the closing strip (2) is pulled open by a longer section; then a hole is cut in the connecting component (7) between the first electrical unit and the second electrical unit, and the first electrical unit is pulled open by a required length, and the length of the first electrical unit pulled open is shorter than the length of the closing strip (2); then the second electrical unit is pulled out in the same way, and a section of the closing strip (2) is cut on the closing strip (2) that is the same as the distance between the pulled out first electrical unit and the second electrical unit, and is embedded in the opening (12) between the first electrical unit and the second electrical unit. In this way, the corresponding closing strips (2) can be embedded between all adjacent electrical units in the parallel electrical unit, and the electrical units can be fixed.
2. A parallel cable according to claim 1, characterized in that The material of the insulating layer (3) is low-density polyethylene, medium-density polyethylene, high-density polyethylene or polyvinyl chloride.
3. A parallel cable according to claim 1 or claim 2, characterized in that The material of the conductor (4) is copper, aluminum or an alloy.
4. A parallel optical cable, comprising an outer sheath (1) and at least one set of loose tubes (5), wherein at least one optical communication component (6) is arranged in the loose tubes (5), characterized in that The outer sheath is composed of an outer sheath body (11). When there is one group of loose tubes (5), a cavity (14) is formed inside the outer sheath body (11), and an opening (12) is formed on the outer sheath body (11). When there are two or more groups of loose tubes (5), a partition component (16) is further provided inside the outer sheath body (11). The partition component (16) is composed of a plurality of partition edges, and divides the interior of the outer sheath body (11) into a plurality of cavities (14). An opening (12) is formed on the outer sheath body (11) corresponding to each cavity (14). The outer sheath body (11) on both sides of the opening (12) has a plurality of partition edges. Two clamping parts (13) are formed, a closing strip (2) is arranged in the opening (12), the closing strip (2) is composed of a closing strip body (21), two clamping grooves (22) are formed on both sides of the closing strip body (21), the closing strip (2) is clamped with the clamping part (13) through the clamping grooves (22) and fixed to the outer sheath (1), the loose tubes (5) in the same group are connected together in pairs through the connecting part (7) to form a parallel optical unit, each cavity (14) is provided with a parallel optical unit, the first loose tube (5) in the parallel optical unit is also connected to the closing strip (2) through the connecting part (7), and the material of the connecting part is a polyester film; When the parallel optical cable is laid, the closing strip (2) of the corresponding cavity is pulled open, the first loose tube (5) in the parallel optical unit is directly pulled out of the cavity (14) along the closing strip (2), the connecting component (7) between the closing strip (2) and the first loose tube (5) is cut or torn, and the closing strip (2) is pulled open to a longer length; then the connecting component (7) between the first loose tube (5) and the second loose tube (5) is cut open, the first loose tube (5) is pulled open to a required length, and the first loose tube (5) is pulled open to a required length. The length of the loose tube (5) pulled out is shorter than the length of the closing strip (2) pulled out; the second loose tube (5) is pulled out in the same way, a closing strip (2) is cut on the closing strip (2) with the same distance as the distance between the first loose tube (5) pulled out and the second loose tube (5), and is embedded in the opening (12) between the first loose tube (5) and the second loose tube (5), so that the corresponding closing strips (2) can be embedded between all adjacent loose tubes (5) in the parallel optical unit, and the loose tubes (5) can be fixed.
5. A parallel optical cable according to claim 4, characterized in that The optical communication component (6) is a G.652 optical fiber, a G.653 optical fiber, a G.654 optical fiber, a G.655 optical fiber, a G.656 optical fiber, a G.657 optical fiber, an A1a optical fiber, an A1b optical fiber, or an A1c optical fiber, or an optical fiber ribbon formed by combining at least two of the above optical fibers, or an optical fiber ribbon body formed by stacking at least two optical fiber ribbons.
6. A parallel optical cable according to claim 4 or claim 5, characterized in that The material of the loose tube (5) is modified polypropylene or polybutylene terephthalate.