Butterfly cable for easy installation

Abstract

This invention belongs to the field of optical cable technology and discloses a butterfly-shaped drop cable that is easy to lay. It has a butterfly-shaped unit, and also includes a first protective unit and a second protective unit for protecting the butterfly-shaped unit. The first and second protective units are located on the left and right sides of the butterfly-shaped unit, respectively, and are integrated with the upper part of the butterfly-shaped unit. Each of the first and second protective units has an opening between itself and the butterfly-shaped unit. This invention has the following main technical advantages: simple structure, easy to manufacture, fast production speed, superior mechanical properties, and more stable and reliable products.

Description

Technical Field

[0001] This invention belongs to the field of optical cable technology, and in particular relates to a butterfly-shaped drop optical cable that is easy to lay. Background Technology

[0002] When butterfly-shaped optical cables are used as conduits, they are mainly inserted directly into the conduit. Since the butterfly-shaped units are prone to rubbing against the conduit walls at the inlet and outlet, they are generally protected, as in the following existing technologies.

[0003] CN215181094U discloses a dual-core butterfly-shaped drop optical cable for ducts, comprising two combined components, a butterfly unit, a protective layer, and an outer sheath. The combined components have a special shape and structure. The two combined components are placed opposite each other, and the two butterfly unit cavities are assembled into a cuboid-shaped butterfly cavity. A first reinforcing member is located in the upper cavity of the first combined component and is located on a groove of the first combined component. A second reinforcing member is located in the upper cavity of the second combined component and is located on a groove of the second combined component. The butterfly unit is located inside the butterfly cavity, and the two combined components form a cylindrical structure. The protective layer is located outside the two combined components, and the outer sheath is located outside the protective layer.

[0004] CN214895944U discloses a lightweight duct-entry optical cable, including a butterfly cable subunit, a reinforcing member, and a water-blocking layer. The butterfly cable subunit includes an optical fiber, a butterfly-shaped sheath wrapped around the optical fiber, and a reinforcing member embedded in the butterfly-shaped sheath. The butterfly cable subunit has a reinforcing member disposed between the notches on both sides of the butterfly wings. The reinforcing member has a columnar structure, and each reinforcing member is tangent to the sidewall of the corresponding notch on both sides. The water-blocking layer is tightly wrapped around the outside of the butterfly cable subunit and the reinforcing member to form a cable core structure. The cross-section of the cable core structure is circular, and the reinforcing member is tangent to the inner side of the water-blocking layer.

[0005] CN113205907A discloses a butterfly-shaped pipe optical fiber composite cable, including an inner sheath, water-blocking tape, steel pipe, optical fiber, reinforcing member, aluminum tape, feeder wire, tin-plated copper wire braided layer and outer sheath. The steel pipe is fitted on the optical fiber, the optical fiber is fixedly installed on the inner sheath, the feeder wire is fixedly installed on the inner sheath, the reinforcing member is fixedly installed on the inner sheath, several sets of water-blocking tape are evenly wound on the inner sheath, the aluminum tape is fixedly installed on the outer wall of the water-blocking tape, the tin-plated copper wire braided layer is fixedly fitted on the outer wall of the aluminum tape, and the outer sheath is fixedly fitted on the outer wall of the tin-plated copper wire braided layer.

[0006] The aforementioned optical cables all have reinforcing members placed directly on both sides of the butterfly unit, and then wrapped or covered together by a protective layer or a covering layer. When under stress, the reinforcing members compress the butterfly unit. Moreover, the structure is complex, the production speed is slow, the cost is high, and the product is not round. In addition, due to the heavy weight of its additional parts, it is not suitable for overhead laying. Summary of the Invention

[0007] To address the aforementioned problems, the present invention aims to disclose a butterfly-shaped drop cable that is easy to lay, which is achieved using the following technical solution.

[0008] A butterfly-shaped drop cable that is easy to lay has a butterfly-shaped unit, and also has a first protection unit and a second protection unit for protecting the butterfly-shaped unit. The first protection unit and the second protection unit are located on the left and right sides of the butterfly-shaped unit respectively and are integrated with the upper part of the butterfly-shaped unit. There are openings between the first protection unit, the second protection unit and the butterfly-shaped unit.

[0009] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a width between the left and right sides of the butterfly unit, and a height between the highest point of the upper surface and the lowest point of the lower surface of the butterfly unit.

[0010] The aforementioned butterfly-shaped drop cable, which is easy to lay, has the outer surfaces of the butterfly unit, the first protection unit, and the second protection unit on the same cylindrical surface.

[0011] A butterfly-shaped drop cable that is easy to lay has a butterfly unit, which consists of an optical communication component, a reinforcing member, and a butterfly sheath. The reinforcing member is located on the upper and lower sides of the optical communication component, and the butterfly sheath covers the optical communication component and the reinforcing member. It also has a first protection unit and a second protection unit, which are located on the left and right sides of the butterfly sheath, respectively. The first protection unit, the butterfly sheath, and the second protection unit are integrated into one unit.

[0012] The aforementioned butterfly-shaped drop cable, which is easy to lay, has an optical communication component that is an optical fiber or an optical fiber ribbon. The optical fiber ribbon consists of multiple optical fibers and an adhesive layer that covers all the optical fibers.

[0013] The aforementioned butterfly-shaped drop cable, which is easy to lay, has tear-out openings on the butterfly-shaped sheaths on both sides of the optical communication component; a first opening is provided between the bottom of the first protection unit and the butterfly-shaped sheath, and a second opening is provided between the bottom of the second protection unit and the butterfly-shaped sheath.

[0014] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a first tear-off opening between the top of the first protection unit and the butterfly-shaped sheath, and a second tear-off opening between the top of the second protection unit and the butterfly-shaped sheath.

[0015] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a first protection unit consisting of a first reinforcing member and a first protective sleeve that covers the first reinforcing member.

[0016] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a second protection unit consisting of a second reinforcing member and a second protective sleeve that covers the second reinforcing member.

[0017] The aforementioned butterfly-shaped drop cable, which is easy to lay, has an upper surface of the butterfly-shaped sheath that is part of a cylindrical surface, a lower surface of the butterfly-shaped sheath that is part of a cylindrical surface, and both the left and right surfaces of the butterfly-shaped sheath are flat.

[0018] The aforementioned butterfly-shaped drop cable, which is easy to lay, has the outer edge of the first protective sleeve, the outer edge of the second protective sleeve, the upper surface of the butterfly-shaped sheath, and the lower surface of the butterfly-shaped sheath on the same cylindrical surface.

[0019] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a height greater than its width.

[0020] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a first reinforcing member replaced by 1 to 4 insulated wires, and a second reinforcing member replaced by 1 to 4 insulated wires. The insulated wires consist of a conductor and an insulating layer covering the conductor.

[0021] This application has the following main beneficial technical effects: simple structure, easy to manufacture, fast production speed, better mechanical properties, and more stable and reliable products. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a dissected three-dimensional structure for Example 1.

[0023] Figure 2 for Figure 1 Enlarged cross-sectional structural diagram.

[0024] Figure 3 for Figure 2 A schematic diagram after removing some of the reference numerals.

[0025] Figure 4 This is a schematic diagram of a dissected three-dimensional structure for Example 2.

[0026] Figure 5 for Figure 4 Enlarged cross-sectional structural diagram.

[0027] Figure 6 for Figure 5 A schematic diagram of a cross-sectional structure after construction. Detailed Implementation

[0028] To enable those skilled in the art to better understand and implement this patent, the markings in the accompanying drawings are explained in detail below.

[0029] In the diagram: 1—Butterfly unit, 2—First protection unit, 3—Second protection unit, 11—Optical fiber, 12—Reinforcing member, 13—Butterfly sheath, 14—Tear opening, 15—First tear opening, 16—Second tear opening, 17—First opening, 18—Second opening, 21—First reinforcing member, 22—First protective sheath, 31—Second reinforcing member, 32—Second protective sheath, H—Height of the butterfly unit, W—Width of the butterfly unit, 111—Adhesive layer, 41—First wire rope, 42—Second wire rope.

[0030] Implementation Example 1: Please see Figures 1 to 3 A butterfly-shaped drop cable for easy installation has a butterfly unit 1, which consists of an optical communication component, a reinforcing member 12, and a butterfly sheath 13. The reinforcing member is located on the upper and lower sides of the optical communication component, and the butterfly sheath covers the optical communication component and the reinforcing member. It also has a first protection unit 2 and a second protection unit 3, which are located on the left and right sides of the butterfly sheath, respectively. The first protection unit, the butterfly sheath, and the second protection unit are integrated into one unit.

[0031] The aforementioned butterfly-shaped drop cable, which is easy to lay, has tear openings 14 on the butterfly-shaped sheaths on both sides of the optical communication component.

[0032] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a first opening 17 between the bottom of the first protection unit and the butterfly-shaped sheath.

[0033] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a second opening 18 between the bottom of the second protection unit and the butterfly-shaped sheath.

[0034] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a first tear-off opening 15 between the top of the first protection unit and the butterfly-shaped sheath.

[0035] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a second tear-off opening 16 between the top of the second protection unit and the butterfly-shaped sheath.

[0036] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a first protection unit consisting of a first reinforcing member 21 and a first protective sleeve 22 that covers the first reinforcing member.

[0037] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a second protection unit consisting of a second reinforcing member 31 and a second protective sleeve 32 that covers the second reinforcing member.

[0038] The aforementioned butterfly-shaped drop cable, which is easy to lay, has an upper surface of the butterfly-shaped sheath that is part of a cylindrical surface, a lower surface of the butterfly-shaped sheath that is part of a cylindrical surface, and both the left and right surfaces of the butterfly-shaped sheath are flat.

[0039] The aforementioned butterfly-shaped drop cable, which is easy to lay, has the outer edge of the first protective sleeve 22, the outer edge of the second protective sleeve 32, the upper surface of the butterfly-shaped sheath, and the lower surface of the butterfly-shaped sheath on the same cylindrical surface.

[0040] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a height H of the butterfly unit that is greater than its width W.

[0041] The aforementioned butterfly-shaped drop cable, which is easy to lay, has a first reinforcing member 21 replaced by 1 to 4 insulated wires, and a second reinforcing member 31 replaced by 1 to 4 insulated wires. The insulated wires consist of a conductor and an insulating layer covering the conductor.

[0042] The aforementioned butterfly-shaped drop cable, which is easy to lay, has an optical communication component of optical fiber 11.

[0043] Implementation Example 2: Please see Figures 4 to 6 and refer to Figures 1 to 3 A butterfly-shaped drop cable that is easy to lay is basically the same as in Implementation Example 1, except that the optical communication component consists of multiple optical fibers 11 and an adhesive layer 111 that covers all the optical fibers.

[0044] In this application, the butterfly-shaped drop cable, when laid overhead, has a first opening 17 fitted onto the first steel wire rope 41 and a second opening 18 fitted onto the second steel wire rope 42, with the first steel wire rope 41 and the second steel wire rope 42 parallel to each other. This method allows the optical cable to be laid overhead. Moreover, during construction, at bends, such as when stretching at corners, the first protection unit 2 and the second protection unit 3 protect the butterfly unit 1 from stretching and friction, effectively protecting it. On the other hand, the first reinforcing member 21 and the second reinforcing member 31 significantly improve the optical cable's tensile strength, compressive strength, bending strength, and abrasion resistance. Furthermore, since the height and width of the butterfly sheath are consistent with the height and width of the butterfly unit in the prior art, existing fiber optic connectors can be used conveniently without the need for additional modifications or redesigns.

[0045] The butterfly-shaped optical cable in this application, when laid in a conduit, is suitable for placement in a conduit due to its cylindrical shape, and can make more reasonable use of the conduit space. On the other hand, due to the presence of the first protection unit 2 and the second protection unit 3, the butterfly unit 1 is effectively protected when the optical cable rubs against the edge of the conduit during the process of pulling it into and out of the conduit, and will not be cracked or torn by wear.

[0046] Compared to existing duct optical cables, this application places the reinforcing member on both sides of the butterfly unit and then covers the butterfly unit and the reinforcing member. The structure is simpler, the product is easier to manufacture, and the product is more rounded. Under stress, the butterfly unit will not be damaged due to pressure on the reinforcing member.

[0047] In this application, when the first reinforcing member is replaced by an insulated wire and the second reinforcing member is replaced by an insulated wire, the mechanical properties of the optical cable are increased while power can be transmitted simultaneously, achieving the goal of simultaneous power and optical signal delivery to the home.

[0048] The butterfly-shaped drop cable described in this application is easy to lay, and the fiber optic cable 11 is of type G.652, G.655, G.656, G.657, A1a, A1b, or A1c.

[0049] The butterfly-shaped drop cable described in this application is easy to lay, and the reinforcing member 12 is made of steel wire, iron wire, aluminum wire, copper wire, alloy wire, glass fiber reinforced plastic rod, aramid yarn, or glass fiber yarn.

[0050] The butterfly-shaped drop cable described in this application is easy to lay, and the butterfly sheath 13 is made of plastic.

[0051] The butterfly-shaped drop cable described in this application is easy to lay, wherein the first reinforcing member 21 is a steel wire, iron wire, aluminum wire, copper wire, alloy wire, glass fiber reinforced plastic rod, aramid yarn, or glass fiber yarn.

[0052] The butterfly-shaped drop cable described in this application is easy to lay, and the first protective sleeve 22 is made of plastic.

[0053] The butterfly-shaped drop cable described in this application is easy to lay, wherein the second reinforcing member 31 is a steel wire, iron wire, aluminum wire, copper wire, alloy wire, glass fiber reinforced plastic rod, aramid yarn, or glass fiber yarn.

[0054] The butterfly-shaped drop cable described in this application is easy to lay, and the second protective sleeve 32 is made of plastic.

[0055] The butterfly-shaped drop cable described in this application is easy to lay, and the adhesive layer 111 is made of plastic, preferably polyacrylic resin.

[0056] In this application, the first protection unit 2 and the second protection unit 3 preferably have the same structure, are symmetrically distributed on both sides of the butterfly unit, and are both combined with the upper side of the butterfly sheath of the butterfly unit.

[0057] In this application, the butterfly unit 1, the first protection unit 2, and the second protection unit 3 are an integral structure, formed as a single unit, and are integrally formed by a sheath extrusion machine.

[0058] In this application, the first opening and the second opening are not only used for engaging the wire rope and hooking, but also for tearing open the first protective unit and the second protective unit during splicing; similarly, the first tear-off opening and the second tear-off opening are also used for tearing open the first protective unit and the second protective unit; in this way, the width and height of the butterfly unit can be guaranteed to match the fiber optic connectors in the prior art.

[0059] In this application, the cross-section of the butterfly-shaped optical cable is similar to that of a wing, which effectively protects the butterfly unit and facilitates overhead installation. The wing structure improves tensile strength, lateral pressure resistance, and impact resistance. The wing structure and the butterfly unit together form a near-circular optical cable, which also facilitates duct installation and is less prone to damage during construction, thus providing effective protection. Compared with the existing duct-mounted butterfly optical cables, it has greater tensile strength, is less prone to crushing, and has a round shape. It is also easy to manufacture and can be formed in one piece.

[0060] In this application, it is also possible to omit the first and second reinforcing members, as long as the first and second protective sleeves have sufficient strength and hardness to prevent the first and second protective units from being torn by gravity during and after hooking.

[0061] In this application, it is preferred that the junction of the innermost bottom of the first protective unit and the butterfly sheath is located above the tear. Similarly, the junction of the innermost bottom of the second protective unit and the butterfly sheath is also located above the tear. In this way, when laid overhead, the tear is located above the first and second wire ropes, which more effectively protects the butterfly unit and prevents it from being easily bitten by birds or other animals at the tear.

[0062] In this application, the presence of the first and second protective units effectively resists external impacts and pressures, and further enhances the strength of the optical cable, making it more suitable for overhead and duct laying. There is no need to worry about the butterfly-shaped drop cable being damaged when using conventional duct optical cable for installation. Of course, the materials of the first and second protective sleeves can also be high-strength foamed materials, which can significantly reduce the weight of the optical cable.

[0063] This application can be used as a smart sensor or smart sensing element; since it can transmit voice and images, it can also be used as a physical sensor, such as a voice sensor or an image sensor; since it transmits light signals through the principle of total internal reflection, it can also be used as a distance sensor; the optical fiber in this application is itself an optical waveguide, so it can be used as an optical waveguide, such as an arrayed optical waveguide or a diffractive optical waveguide; this application can also be used in the field of optical computing, as part of optical chip computing, optical computing, optical network computing, and optical computing.

[0064] This application has the following main beneficial technical effects: simple structure, easy to manufacture, fast production speed, better mechanical properties, and more stable and reliable products.

[0065] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A butterfly-shaped drop cable for easy installation, comprising a butterfly unit (1), the butterfly unit consisting of an optical communication component, a reinforcing member (12), and a butterfly sheath (13), wherein the reinforcing member is located on the upper and lower sides of the optical communication component, and the butterfly sheath covers the optical communication component and the reinforcing member; characterized in that: It also has a first protection unit (2) and a second protection unit (3). The first protection unit and the second protection unit are located on the left and right sides of the butterfly-shaped sheath, respectively. The first protection unit, the butterfly-shaped sheath, and the second protection unit are integrated into one unit. The upper surface of the butterfly-shaped sheath is part of a cylindrical surface, the lower surface of the butterfly-shaped sheath is part of a cylindrical surface, and the left and right surfaces of the butterfly-shaped sheath are both flat. The outer edge of the first protection sleeve (22), the outer edge of the second protection sleeve (32), the upper surface of the butterfly-shaped sheath, and the lower surface of the butterfly-shaped sheath are on the same cylindrical surface.

2. The butterfly-shaped drop cable for easy installation according to claim 1, characterized in that: The optical communication component is an optical fiber (11) or an optical fiber ribbon, which consists of multiple optical fibers (11) and an adhesive layer (111) covering all the optical fibers.

3. The butterfly-shaped drop optical cable for easy installation according to claim 1, characterized in that: The butterfly-shaped sheaths on the left and right sides of the optical communication component have tear openings (14); the lower part of the first protection unit has a first opening (17) between it and the butterfly sheath, and the lower part of the second protection unit has a second opening (18) between it and the butterfly sheath.

4. The butterfly-shaped drop cable for easy installation according to claim 1, characterized in that: The first protective unit has a first tear-off opening (15) between its upper part and the butterfly-shaped sheath, and the second protective unit has a second tear-off opening (16) between its upper part and the butterfly-shaped sheath.

5. The butterfly-shaped drop optical cable for easy installation according to claim 1, characterized in that: The height of the butterfly element is greater than the width of the butterfly element.

6. A butterfly-shaped drop cable for easy installation according to any one of claims 1 to 4, characterized in that: The first protection unit consists of a first reinforcing member (21) and a first protective sleeve (22) that covers the first reinforcing member.

7. A butterfly-shaped drop cable for easy installation according to claim 6, characterized in that: The second protective unit consists of a second reinforcing member (31) and a second protective sleeve (32) that covers the second reinforcing member.

8. The butterfly-shaped drop cable for easy installation according to claim 5, characterized in that: The first reinforcement (21) is replaced by 1 to 4 insulated wires, and the second reinforcement (31) is replaced by 1 to 4 insulated wires, the insulated wires being composed of a conductor and an insulating layer covering the conductor.

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