A multi-unit self-supporting butterfly-shaped optical cable

Abstract

The present invention belongs to the technical field of communication optical cables and discloses a multi-unit, self-supporting butterfly-shaped optical drop cable comprising at least two identical butterfly-shaped drop units, a protective housing, and multiple reinforcement members. The butterfly-shaped sheath of the butterfly-shaped drop unit is formed in the shape of a portion of two elliptical cylinder surfaces, and the butterfly sheath also has a flat surface. The protective housing is composed of 2n shell bodies and extension bodies. All the shell bodies are sequentially connected to form a closed structure with a shell cavity formed inside. The extension body extends outward from the top of the shell body. The butterfly-shaped drop unit is located within the shell cavity. The extension body has at least two sequentially arranged extension holes; the reinforcement members are located within the extension holes, where n is a positive integer. The present invention has the following major beneficial technical effects: a novel, simple, and easy-to-manufacture structure, excellent anti-bite performance, high tensile strength, stable and reliable optical performance, a more reasonable number of drop units, and more reliable fixation.

Description

Technical Field

[0001] The present invention belongs to the technical field of communication optical cables, and in particular relates to a multi-unit self-supporting butterfly-shaped introduction optical cable. Background Art

[0002] Prior art self-supporting butterfly-shaped drop optical cables are integrated structures consisting of a suspension wire, reinforcements, and drop units. The suspension wire is combined with the reinforcements, which in turn combine with the drop units to form a straight-line structure. The suspension wire has additional reinforcement elements within it. During construction or operation, the suspension wire or the entire cable is clamped. However, these cables have several drawbacks: They only have a single drop unit, which increases installation costs when more applications are required. Furthermore, without external components for further protection, their anti-snagging performance is poor. Prior art optical cables with multiple units often have too many units, resulting in inflexibility and high costs, making them impractical for practical use. For example, in an apartment with only two or three units per floor, only the drop units required are needed. Furthermore, prior art self-supporting cables have only one reinforcement member, which lacks sufficient tensile strength. When sufficient tensile strength is required, the cable becomes oversized and expensive. Furthermore, prior art single-sided fixed suspension wires are difficult to locate, and can sway in wind, causing unstable cable performance.

[0003] CN214225518U discloses a dual-unit butterfly-shaped optical drop cable comprising a protective housing and two butterfly-shaped optical units. The butterfly-shaped optical units are composed of an optical fiber, a first reinforcement member and a second reinforcement member located on the upper and lower sides of the optical fiber, and a first butterfly-shaped sheath. The first butterfly sheath covers the optical fiber, the first reinforcement member, and the second reinforcement member. The edges of the first butterfly sheath on the left and right sides of the optical fiber have first tearing openings. The cable is characterized in that the cross-section of the butterfly-shaped optical unit is elliptical. The protective housing is formed by joining an upper protective tube and a lower protective tube. The protective housing is an integrated structure, and the butterfly-shaped optical unit is located within the protective housing.

[0004] CN213482529U discloses an improved butterfly-shaped introduction optical cable, which comprises two first protective shells, two second protective shells, and a butterfly-shaped introduction unit; the first and second protective shells have special structures; and the butterfly-shaped introduction unit is located in an accommodating cavity.

[0005] In the existing technology, a multi-branch structure is adopted, and multiple branch strips are rigidly connected. During installation and operation, these strips often cause position deviation, aging and breakage of branches or tendons, and are troublesome to produce and inconvenient to coil.

[0006] The above-mentioned prior art cannot simultaneously solve the related technical problems existing in the prior art. Summary of the Invention

[0007] To solve the above problems, the present invention aims to disclose a multi-unit self-supporting butterfly-shaped optical cable introduction cable, which is achieved by adopting the following technical solutions.

[0008] A multi-unit self-supporting butterfly-shaped optical cable introduction cable, having at least two identical butterfly-shaped introduction units, a protective shell, and multiple reinforcement members. The butterfly-shaped introduction unit is composed of an optical fiber, two reinforcement members, and a butterfly sheath. The butterfly sheath is composed of a first butterfly sheath and a second butterfly sheath. The reinforcement members are respectively located on both sides of the optical fiber, and the two reinforcement members are respectively located in the first butterfly sheath and the second butterfly sheath. The characteristics are: the outer edges of the first butterfly sheath and the second butterfly sheath are both part of an elliptical cylinder, and a concave first tearing groove is formed at the junction of the elliptical cylinders of the first butterfly sheath and the second butterfly sheath. The non-arc surface of the butterfly sheath is a side plane, and the side plane corresponding to the optical fiber is It has a concave second tear groove; the protective shell is composed of 2n shell bodies and extension bodies, all of the shell bodies are connected in sequence to form a closed structure, the extension body extends outward from the top of the shell body, and adjacent shell bodies are connected to form an inwardly protruding inner convex strip, the interior of the shell body is a shell cavity, the shell cavity is connected, the outer surface of the shell body and the inner surface of the shell body are both part of an ellipse, and two adjacent shell bodies are grouped together to form an empty butterfly-shaped body, each empty butterfly-shaped body is provided with a butterfly-shaped introduction unit, and the extension body has at least two extension holes arranged in sequence; the reinforcement is located in the extension hole, n≥2, n is a positive integer.

[0009] The above-mentioned multi-unit self-supporting butterfly-shaped optical cable is characterized in that: n=2, and the side planes of two identical butterfly-shaped introduction units are aligned and closely attached.

[0010] The multi-unit self-supporting butterfly-shaped optical cable mentioned above is characterized in that: n≥3, a central cavity is formed in the center of the shell body, and a filling component of a corresponding shape is placed in the central cavity.

[0011] The multi-unit self-supporting butterfly-shaped optical cable mentioned above is characterized in that the extension body has binding holes that are intermittently distributed and penetrate the extension body, and the binding holes are located between adjacent extension holes.

[0012] The present application has the following main beneficial technical effects: novel and simple structure, easy manufacturing, excellent anti-biting performance, high tensile strength, stable and reliable optical performance, more reasonable number of introduced units, and more reliable fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure after dissection of Example 1.

[0014] Figure 2 for Figure 1 Schematic diagram of the enlarged cross-section structure.

[0015] Figure 3for Figure 1 Schematic diagram of the three-dimensional structure of a section of the protective shell used in the dissection.

[0016] Figure 4 for Figure 3 Schematic diagram of the enlarged cross-section structure.

[0017] Figure 5 for Figure 4 Schematic diagram of the structure after adding some lines.

[0018] Figure 6 This is a schematic diagram of the cross-sectional structure of Example 2.

[0019] Figure 7 This is a schematic diagram of the cross-sectional structure of the protective shell of Example 3.

[0020] Figure 8 This is a schematic diagram of the cross-sectional structure of the protective shell of Example 4. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand and implement this patent, the marks in the drawings are now explained in detail in conjunction with the drawings in the specification.

[0022] In the figure: 1—butterfly-shaped introduction unit, 2—protective shell, 3—reinforcement member, 11—optical fiber, 12—reinforcement member, 13—butterfly-shaped sheath, 131—first butterfly sleeve, 132—second butterfly sleeve, 133—first tear groove, 134—second tear groove, 135—side plane, 21—shell body, 22—extension body, 23—inner convex strip, 210—shell cavity, 220—extension hole, 211—outer surface of shell body, 212—inner surface of shell body, 2100—central cavity, 200—central cavity.

[0023] Implementation Example 1: Please see Figures 1 to 5 A multi-unit self-supporting butterfly-shaped optical cable includes two identical butterfly-shaped introduction units 1, a protective shell 2, and three reinforcement members 3.

[0024] The butterfly introduction unit 1 is composed of an optical fiber 11, two reinforcement members 12, and a butterfly sheath 13. The butterfly sheath 13 is composed of a first butterfly sheath 131 and a second butterfly sheath 132. The reinforcement members 12 are respectively located on both sides of the optical fiber 11. The two reinforcement members 12 are respectively located in the first butterfly sheath 131 and the second butterfly sheath 132. The outer edges of the first butterfly sheath 131 and the second butterfly sheath 132 are both part of an elliptical cylinder. A concave first tear groove 133 is formed at the junction of the elliptical cylinders of the first butterfly sheath 131 and the second butterfly sheath 132. The non-arc surface of the butterfly sheath 13 is a side plane 135. The side plane 135 corresponding to the optical fiber 11 has a concave second tear groove 134.

[0025] The protective housing 2 consists of four main bodies 21 and extensions 22. The four main bodies 21 are connected in sequence to form a closed structure. The extensions 22 extend outward from the top of the main bodies 21. Adjacent main bodies 21 connect to form inwardly protruding inner ridges 23. The interior of the main body 21 defines a housing cavity 210. The extensions 22 have three sequentially arranged extension holes 220. The outer surface 211 and inner surface 212 of the main body are both segments of an ellipse. The centers of the four main bodies 21 form a central cavity 2100.

[0026] The three reinforcement members 3 are respectively located in the three extension holes 220 , and the side planes 135 of the two identical butterfly-shaped introduction units 1 are aligned and tightly attached to each other. The butterfly-shaped introduction unit 1 is located in the housing cavity 210 .

[0027] In this embodiment, the butterfly-shaped sheath 13 substantially fills the housing cavity 210 .

[0028] Furthermore, in this embodiment, the extension body 22 has intermittently distributed bandage holes that penetrate the extension body 22. The so-called bandage holes that penetrate the extension body 22 are as follows: Figure 4 From top to bottom, the extension body 22 between the first and second extension holes 220 has a bandaging hole running through it left and right, and the extension body 22 between the second and third extension holes 220 has a bandaging hole running through it left and right.

[0029] Implementation Example 2: Please see Figure 6 , and refer to Figures 1 to 5 A multi-unit self-supporting butterfly-shaped optical cable is basically the same as embodiment 1, except that the two butterfly-shaped introduction units 1 are tilted in a different direction from that in the embodiment. This method makes the placement of the butterfly-shaped introduction units 1 in the shell cavity 210 more flexible and can be placed more casually.

[0030] Implementation Example 3: See Figure 7 , and refer to Figures 1 to 6 A multi-unit self-supporting butterfly-shaped optical cable introduction is basically the same as embodiment 1 and embodiment 2, except that: each shell body 21 has an extension body 22 extending outward from the top of the shell body 21, and the extension body 22 has three extension holes 220 arranged in sequence.

[0031] In this embodiment, the reinforcing member 3 may be provided in all or part of the extension hole 220 .

[0032] Furthermore, at least one shell body 21 may have an extension body 22 extending outward from the top of the shell body 21 , each extension body 22 may have at least two sequentially arranged extension holes 220 , and each shell body 21 may have a bandaging hole.

[0033] The above embodiment has the following advantages: the binding hole provides an additional fixing method besides self-supporting fixation, which can make the fixation of the optical cable more reliable. For example, additional fixation can be achieved by passing a binding tape or rope through the binding hole. For example, when there are two shell bodies 21 in relative directions, the upper and lower shell bodies 21 can also be fixed by different clamps. In this way, the optical cable will not sway when the wind blows.

[0034] Implementation Example 4: See Figure 8 , and refer to Figures 1 to 7 A multi-unit self-supporting butterfly-shaped optical drop cable is basically the same as embodiments 1-3, except that: the shell body 21 has six, two adjacent shell bodies 21 form a pair, forming a connected shell cavity 210, forming a total of three shell cavities 210, each of which houses a butterfly-shaped drop unit 1. A central cavity 200 is formed in the center of the shell body 21, and a filling component of a corresponding shape is placed in the central cavity 200. This can make the butterfly-shaped drop unit 1 structurally stable.

[0035] In the present application, the dispersed reinforcement members 3 are formed from the single reinforcement member of the prior art, which not only increases the number of reinforcement members 3 but also makes the tensile strength stronger and the reliability higher.

[0036] In this application, multiple shell bodies 21 can be provided as needed, and the number of the shell bodies 21 is even. Each pair of adjacent shell bodies 21 houses a butterfly-shaped introduction unit 1, thus resolving the various inconveniences caused by the single butterfly-shaped introduction unit 1 in the prior art. Due to the production and customization based on demand, waste of size and cost is avoided, thus meeting actual needs.

[0037] In the present application, due to the presence of the protective shell 2, the anti-bite performance is better.

[0038] In the present application, the butterfly-shaped introduction unit 1 is an integrated structure; the protective shell 2 is also an integrated structure.

[0039] In the present application, the inner convex strip 23 is clamped on the corresponding first tearing groove 133, thereby realizing reliable fixation of the butterfly-shaped introduction unit 1; the non-planar outer edges of adjacent butterfly-shaped introduction units 1 are connected and actually form a structure similar to the first tearing groove. At this time, the inner convex strip 23 is also clamped on the structure similar to the first tearing groove, further reliably fixing the butterfly-shaped introduction unit 1.

[0040] In this application, the side plane 135 is a plane.

[0041] The multi-unit self-supporting butterfly-shaped optical cable introduced in the present application is characterized in that the material of the protective shell 2 is plastic, aluminum alloy, steel or iron.

[0042] The multi-unit self-supporting butterfly-shaped optical cable introduced in the present application is characterized in that the reinforcement member 3 is a steel wire, an aluminum wire, an iron wire, a copper wire, or a glass fiber reinforced plastic rod.

[0043] The multi-unit self-supporting butterfly-shaped optical cable introduced in the present application is characterized in that the type of the optical fiber 11 is G.652, G.655, G.656, G.657, A1a, or A1b.

[0044] The multi-unit self-supporting butterfly-shaped optical cable introduced in the present application is characterized in that the reinforcement member 12 is a steel wire, an aluminum wire, an iron wire, a copper wire, or a glass fiber reinforced plastic rod.

[0045] The multi-unit self-supporting butterfly-shaped drop optical cable described in the present application is characterized in that the material of the butterfly-shaped sheath 13 is plastic.

[0046] A multi-unit self-supporting butterfly-shaped optical cable introduced in the present invention has at least two identical butterfly-shaped introduction units, a protective shell, and multiple reinforcement members. The butterfly-shaped sheath of the butterfly-shaped introduction unit is formed by the shape of a portion of two elliptical cylinder surfaces. The butterfly-shaped sheath also has a flat surface. The protective shell is composed of 2n shell bodies and extension bodies. All shell bodies are connected in sequence to form a closed structure and form a shell cavity inside. The extension body extends outward from the top of the shell body. The butterfly-shaped introduction unit is located in the shell cavity. The extension body has at least two extension holes arranged in sequence; the reinforcement member is located in the extension hole, n≥2, and n is a positive integer.

[0047] The optical cable in this application can also be used as a physical sensor, an optical fiber sensor, or an intelligent sensor.

[0048] The present application has the following main beneficial technical effects: novel and simple structure, easy manufacturing, excellent anti-biting performance, high tensile strength, stable and reliable optical performance, more reasonable number of introduced units, and more reliable fixation.

[0049] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent alternatives to the technical features of the technical solutions described in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A multi-unit self-supporting butterfly-shaped drop optical cable having two identical butterfly-shaped drop units, a protective housing, and multiple reinforcement members. The butterfly-shaped drop unit is composed of an optical fiber, two reinforcement members, and a butterfly sheath. The butterfly sheath is composed of a first butterfly sheath and a second butterfly sheath. The reinforcement members are located on both sides of the optical fiber, and the two reinforcement members are located in the first butterfly sheath and the second butterfly sheath, respectively. The characteristics are: The outer edges of the first butterfly sleeve and the second butterfly sleeve are both part of an elliptical cylinder. A concave first tear groove is formed at the junction of the elliptical cylinders of the first butterfly sleeve and the second butterfly sleeve. The non-arc surface of the butterfly sleeve is a side plane, and a concave second tear groove is formed on the side plane corresponding to the optical fiber. The protective shell is composed of four shell bodies and extension bodies. All shell bodies are connected in sequence to form a closed structure. The extension bodies extend outward from the top of the shell bodies. Adjacent shell bodies are connected to form an inwardly protruding inner convex strip. The interior of the shell body is a shell cavity. The shell cavities are connected. The outer surface and inner surface of the shell body are both parts of an ellipse. Two adjacent shell bodies are grouped together to form an empty butterfly-shaped body. Each empty butterfly-shaped body is provided with a butterfly-shaped introduction unit. The extension body has at least two sequentially arranged extension holes; the reinforcement is located in the extension hole. The side planes of the two identical butterfly-shaped introduction units are aligned and close to each other. The butterfly-shaped introduction units are an integrated structure, and the protective shell is also an integrated structure. The inner convex strips clamp the corresponding first tearing grooves, and the non-planar outer edges of adjacent butterfly-shaped introduction units are connected. The extension body is provided with bandaging holes which are intermittently distributed and pass through the extension body, and the bandaging holes are located between adjacent extension holes.

2. A multi-unit self-supporting butterfly-shaped drop cable having at least three identical butterfly-shaped drop units, a protective housing, and multiple reinforcement members. The butterfly-shaped drop unit is composed of an optical fiber, two reinforcement members, and a butterfly sheath. The butterfly sheath is composed of a first butterfly sheath and a second butterfly sheath. The reinforcement members are located on both sides of the optical fiber, and the two reinforcement members are located in the first butterfly sheath and the second butterfly sheath, respectively. The characteristics are: The outer edges of the first butterfly sleeve and the second butterfly sleeve are both part of an elliptical cylinder. A concave first tear groove is formed at the junction of the elliptical cylinders of the first butterfly sleeve and the second butterfly sleeve. The non-arc surface of the butterfly sleeve is a side plane, and a concave second tear groove is formed on the side plane corresponding to the optical fiber. The protective shell is composed of 2n shell bodies and extension bodies. All shell bodies are connected in sequence to form a closed structure. The extension body extends outward from the top of the shell body. Adjacent shell bodies are connected to form an inwardly protruding inner convex strip. The interior of the shell body is a shell cavity. The shell cavities are connected. The outer surface and the inner surface of the shell body are both parts of an ellipse. Two adjacent shell bodies are grouped together to form an empty butterfly body. Each empty butterfly body is provided with a butterfly-shaped introduction unit. The extension body has at least two sequentially arranged extension holes; the reinforcement is located in the extension hole. n ≥ 3, n is a positive integer; A central cavity is formed in the center of the shell body, and a filling component of a corresponding shape is placed in the central cavity; The butterfly-shaped introduction unit is an integrated structure, and the protective shell is an integrated structure; the inner convex strips clamp the corresponding first tearing grooves, and the non-planar outer edges of adjacent butterfly-shaped introduction units are connected; The extension body is provided with bandaging holes which are intermittently distributed and pass through the extension body, and the bandaging holes are located between adjacent extension holes.

3. A multi-unit self-supporting butterfly-shaped drop optical cable according to claim 1 or claim 2, characterized in that: The material of the protective shell is plastic, aluminum alloy, steel or iron.

4. The multi-unit self-supporting butterfly-shaped drop optical cable according to claim 3, characterized in that: The reinforcement member is a steel wire, an aluminum wire, an iron wire, a copper wire or a glass fiber reinforced plastic rod.

5. The multi-unit self-supporting butterfly-shaped drop optical cable according to claim 4, characterized in that: The optical fiber model is G.652, G.655, G.656, G.657, A1a, or A1b.

6. The multi-unit self-supporting butterfly-shaped drop optical cable according to claim 5, characterized in that: The reinforcement is steel wire, aluminum wire, iron wire, copper wire or glass fiber reinforced plastic rod.

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