Multi-unit self-supporting butterfly-shaped lead-in optical cable

Abstract

The invention belongs to the technical field of communication optical cables, and discloses a multi-unit self-supporting butterfly-shaped leading-in optical cable which is provided with at least two identical butterfly-shaped leading-in units, a protective shell and a plurality of reinforcing pieces, a butterfly-shaped sheath of each butterfly-shaped leading-in unit is formed by the shape of a part of the surface of two elliptic cylinders, the butterfly-shaped sheath is further provided with one surface which is a plane, and the other surface of the butterfly-shaped sheath is a plane. The protective shell is composed of 2n shell bodies and an extension body, all the shell bodies are connected in sequence to form a closed structure, a shell cavity is formed in the closed structure, the extension body extends outwards from the top end of the shell body, the butterfly-shaped introduction unit is located in the shell cavity, and at least two extension holes which are arranged in sequence are formed in the extension body; the reinforcers are located in the extending holes, n is larger than or equal to 2, and n is a positive integer. The invention has the following main technical effects: the structure is novel and simple, the manufacture is easy, the anti-biting performance is excellent, the tensile resistance is large, the optical performance is stable and reliable, the number of introduced units is more reasonable, and the fixation is more reliable.

Description

Technical Field

[0001] The 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] The self-supporting butterfly-shaped optical cable in the prior art is an integrated structure composed of a suspension wire, a rib, and an introduction unit. The suspension wire is combined with the rib, and the rib is combined with the introduction unit to form a straight structure. The suspension wire has additional reinforcement elements inside. During construction or work, the suspension wire is clamped or the entire cable is clamped together. The defects of this cable are: there is only one introduction unit, which brings more cost to the laying when more applications are required. On the other hand, there is no external component for further protection, and the anti-bite performance is poor. The optical cable with more units in the prior art usually has too many units, is inflexible, and has a high cost, which is not conducive to practical use. For example, there are only two or three households on a single floor of an apartment. In this case, only the introduction unit of the corresponding unit is actually needed. In addition, the self-supporting cable reinforcement in the prior art has only one, which does not have sufficient tensile strength. When sufficient tensile strength is required, the size is too large and the cost remains high. Moreover, the unilateral fixing of the suspension wire in the prior art is not conducive to the positioning of the position, and it shakes with the wind, etc., causing the instability of the optical cable performance.

[0003] CN214225518U discloses a double-unit butterfly-shaped optical cable, which has a protective shell and two butterfly-shaped optical units. The butterfly-shaped optical unit is 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-shaped sheath covers the optical fiber, the first reinforcement member, and the second reinforcement member. The edges of the first butterfly-shaped sheath on the left and right sides of the optical fiber are provided with first tearing openings. The characteristic is that the cross section of the butterfly-shaped optical unit is an elliptical shape; the protective shell is formed by joining an upper protective tube and a lower protective tube, the protective shell is an integrated structure, and the butterfly-shaped optical unit is located in the protective shell.

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

[0005] In the prior art, a multi-branch structure is adopted, and multiple branch strips are rigidly connected. During installation and operation, position deviation, aging and breakage of branches or tendons are often caused, and the production is troublesome and winding is inconvenient.

[0006] The above-mentioned prior art cannot solve the related technical problems existing in the prior art at the same time. Summary of the invention

[0007] To solve the above problems, the purpose of the present invention is 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, comprising at least two identical butterfly-shaped introduction units, a protective shell, and a plurality of reinforcement members, wherein the butterfly-shaped introduction unit is composed of an optical fiber, two reinforcement members, and a butterfly-shaped sheath, wherein the butterfly-shaped sheath is composed of a first butterfly-shaped sheath and a second butterfly-shaped sheath, wherein 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-shaped sheath and the second butterfly-shaped sheath, and wherein the outer edges of the first butterfly-shaped sheath and the second butterfly-shaped sheath are both part of an elliptical cylinder, wherein a concave first tearing groove is formed at the junction of the elliptical cylinders of the first butterfly-shaped sheath and the second butterfly-shaped sheath, wherein the non-arc surface of the butterfly-shaped sheath is a side plane, and the side plane corresponding to the optical fiber is A second recessed tear groove is provided; the protective shell is composed of 2n shell bodies and extension bodies, all of which 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 inner convex strip protruding inwardly, 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 an empty butterfly body is formed by two adjacent shell bodies as a group, each empty butterfly body is provided with a butterfly 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, and n is a positive integer.

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

[0010] The above-mentioned multi-unit self-supporting butterfly-shaped optical cable introduction 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 above-mentioned multi-unit self-supporting butterfly-shaped optical cable introduction is characterized in that: the extension body is provided with binding holes which 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 structure, simplicity, 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 implementation 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 described 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-shaped sheath, 132—second butterfly-shaped sheath, 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 has two identical butterfly-shaped introduction units 1, a protective shell 2, and three reinforcement members 3. 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. The protective shell 2 is composed of four shell bodies 21 and an extension body 22. The four shell bodies 21 are connected in sequence to form a closed structure. The extension body 22 extends outward from the top of the shell body 21. Adjacent shell bodies 21 are connected to form an inner convex strip 23 protruding inward. The inside of the shell body 21 is a shell cavity 210. The extension body 22 has three sequentially arranged extension holes 220. The outer surface 211 of the shell body and the inner surface 212 of the shell body are both parts of an ellipse. The centers of the four shell bodies 21 form a central cavity 2100. The three reinforcing 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 closely attached to each other, and the butterfly-shaped introduction unit 1 is located in the housing cavity 210 .

[0024] In this embodiment, the butterfly sheath 13 substantially fills the housing cavity 210 .

[0025] 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 In the figure, from top to bottom, the extension body 22 between the first and second extension holes 220 has a bandaging hole that passes through left and right, and the extension body 22 between the second and third extension holes 220 has a bandaging hole that passes through left and right.

[0026] Implementation Example 2: Please see Figure 6 , and refer to Figures 1 to 5 A multi-unit self-supporting butterfly-shaped optical cable introduction is basically the same as the implementation example 1, except that the two butterfly-shaped introduction units 1 have different inclination directions from those in the implementation example. The existence of 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.

[0027] Implementation Example 3: Please 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 Implementation Example 1 and Implementation Example 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.

[0028] In this embodiment, the reinforcing member 3 may be provided in all or part of the extension hole 220 .

[0029] 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.

[0030] The above embodiment has the following advantages: the binding hole provides an additional fixing method besides self-supporting fixing, which can make the fixing of the optical cable more reliable. For example, additional fixing is 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, so that the optical cable will not sway when the wind blows.

[0031] Implementation Example 4: Please see Figure 8 , and refer to Figures 1 to 7 A multi-unit self-supporting butterfly-shaped optical cable introduction cable is basically the same as the embodiments 1-3, except that: the shell body 21 has six, two adjacent shell bodies 21 are used as a pair to form a connected shell cavity 210, and a total of three shell cavities 210 are formed, and a butterfly-shaped introduction unit 1 is placed in each of the three shell cavities 210, and 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, so that the structure of the butterfly-shaped introduction unit 1 can be stable.

[0032] In the present application, the dispersed reinforcement members 3 are formed from a single reinforcement member in the prior art, which not only increases the number of reinforcement members 3 but also makes the tensile strength stronger and the reliability higher.

[0033] In the present application, multiple shell bodies 21 may be provided according to the requirements, and the number of the shell bodies 21 may be even, and a butterfly-shaped introduction unit 1 may be placed in each pair of adjacent shell bodies 21, thereby solving the various inconveniences caused by only one butterfly-shaped introduction unit 1 in the prior art. Since the shell body 21 is produced and customized according to the requirements, the waste of size and cost is avoided, and the actual requirements are met.

[0034] In the present application, due to the presence of the protective shell 2, the anti-bite performance is better.

[0035] In the present application, the butterfly introduction unit 1 is an integrated structure; the protective shell 2 is also an integrated structure.

[0036] In the present application, the inner convex strip 23 clamps the corresponding first tear 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 tear groove. At this time, the inner convex strip 23 is also clamped on the structure similar to the first tear groove, further reliably fixing the butterfly-shaped introduction unit 1.

[0037] In the present application, the side plane 135 is a plane.

[0038] 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.

[0039] 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.

[0040] 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 or G.655 or G.656 or G.657 or A1a or A1b.

[0041] 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.

[0042] The multi-unit self-supporting butterfly-shaped optical cable introduced in the present application is characterized in that the material of the butterfly-shaped sheath 13 is plastic.

[0043] 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 part of two elliptical cylinder surfaces, and the butterfly-shaped sheath also has a surface that is a plane. 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, and 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.

[0044] The optical cable in this application can also be used as a physical sensor, an optical fiber sensor, or an intelligent sensor.

[0045] The present application has the following main beneficial technical effects: novel structure, simplicity, easy manufacturing, excellent anti-biting performance, high tensile strength, stable and reliable optical performance, more reasonable number of introduced units, and more reliable fixation.

[0046] 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 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 multi-unit self-supporting butterfly-shaped lead-in optical cable, comprising at least two identical butterfly-shaped lead-in units, a protective shell, and a plurality of reinforcement members, wherein the butterfly-shaped lead-in unit is composed of an optical fiber, two reinforcement members, and a butterfly-shaped sheath, wherein the butterfly-shaped sheath is composed of a first butterfly-shaped sheath and a second butterfly-shaped sheath, wherein 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-shaped sheath and the second butterfly-shaped sheath, wherein the characteristics are as follows: The outer edges of the first butterfly sleeve and the second butterfly sleeve are both part of the elliptical cylinder, and a concave first tearing groove is formed at the junction of the elliptical cylinders of the first butterfly sleeve and the second butterfly sleeve, and the non-arc surface of the butterfly sleeve is a side plane, and a concave second tearing groove is provided on the side plane corresponding to the optical fiber; The protective shell is composed of 2n shell bodies and extension bodies. All the 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 inner convex strip protruding inward. The inside 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. Two adjacent shell bodies are grouped as a group to form an empty butterfly body. A butterfly introduction unit is arranged inside each empty butterfly body. The extension body has at least two extension holes arranged in sequence; the reinforcement is located in the extension hole, n≥2, and n is a positive integer.

2. A multi-unit self-supporting butterfly-shaped optical cable according to claim 1, characterized in that: n=2, the side planes of two identical butterfly-shaped introduction units are aligned and close to each other.

3. The multi-unit self-supporting butterfly-shaped optical cable according to claim 1, 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.

4. A multi-unit self-supporting butterfly-shaped optical cable according to any one of claims 1 to 3, characterized in that: The extension body is provided with bandaging holes which are intermittently distributed and penetrate the extension body, and the bandaging holes are located between adjacent extension holes.

5. A multi-unit self-supporting butterfly-shaped optical cable according to claim 4, characterized in that: The butterfly introduction unit is an integrated structure.

6. A multi-unit self-supporting butterfly-shaped optical cable according to claim 5, characterized in that: The protective shell is an integrated structure.

7. A multi-unit self-supporting butterfly-shaped optical cable according to claim 6, characterized in that: The material of the protective shell is plastic, aluminum alloy, steel or iron.

8. The multi-unit self-supporting butterfly-shaped optical cable according to claim 7, 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.

9. A multi-unit self-supporting butterfly-shaped optical cable according to claim 8, characterized in that: The optical fiber model is G.652 or G.655 or G.656 or G.657 or A1a or A1b.

10. The multi-unit self-supporting butterfly-shaped optical cable according to claim 9, characterized in that: The reinforcement is steel wire, aluminum wire, iron wire, copper wire or glass fiber reinforced plastic rod.

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