Pull-out connection optical cable

Abstract

The utility model discloses a pull-out connection optical cable, which comprises a sheath and a plurality of optical unit groups, a plurality of inner holes extending along the extension direction of the sheath are arranged in the sheath, the plurality of optical unit groups are assembled in the plurality of inner holes in a one-to-one correspondence manner, and each optical unit group comprises a plurality of optical units. The pull-out connection optical cable facilitates rapid identification of the internal optical unit, and improves the pull-out connection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cables, in particular to a hollow-out optical cable. Background Art

[0002] Splice optical cables are mainly used in residential, commercial, shopping malls, government and enterprise scenarios. They are special optical cables that can quickly achieve optical fiber access. However, in the existing technology, splice optical cables have problems such as difficult to peel the sheath, time-consuming and labor-intensive construction, too many optical units inside the cable, and inconvenient to quickly identify, and the cable that is accidentally broken is not convenient to connect and fix, and the splice length is short. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a splicing optical cable, which facilitates the rapid identification of the internal optical unit and improves the efficiency of splicing.

[0005] The optical cable of the utility model embodiment comprises:

[0006] A sheath, wherein the sheath is provided with a plurality of inner holes extending along an extension direction of the sheath;

[0007] A plurality of light unit groups are assembled in the plurality of inner holes in a one-to-one correspondence, and each of the light unit groups includes a plurality of light units.

[0008] In some embodiments, the outer surface of the sheath is provided with a mark, the position of the mark corresponds to the position of the inner hole and is used to identify different inner holes.

[0009] In some embodiments, the marking includes at least one of the following: a color bar, a marking line.

[0010] In some embodiments, the sheath is provided with a tearing notch, and the tearing notch is used to reduce the distance between the outer surface of the sheath and the inner hole so that the sheath can be easily torn from the tearing notch.

[0011] In some embodiments, the width of the tear gradually decreases along the direction from the outer surface of the sheath to the inner hole.

[0012] In some embodiments, the trenched optical cable includes a strength member, the strength member is disposed at a central position of the jacket, and a plurality of the inner holes are disposed on a circumferential side of the strength member and are spaced apart along the circumference of the strength member.

[0013] In some embodiments, the sheath includes a plurality of protrusions, the plurality of protrusions are arranged at intervals along the circumference of the sheath, and the plurality of inner holes are disposed in the plurality of protrusions in a one-to-one correspondence.

[0014] In some embodiments, the sheath includes a main body, a plurality of the protrusions are integrally formed on the outer peripheral side of the main body and are arranged at intervals along the circumference of the main body, and the reinforcement is disposed in the main body.

[0015] In some embodiments, the outer surface of each of the protrusions is provided with two tearing notches, the two tearing notches are arranged opposite to each other in the circumferential direction of the sheath, and the inner hole in each of the protrusions is located between the two tearing notches.

[0016] In some embodiments, the reinforcement is a metal reinforcement.

[0017] Beneficial effect: The hollow-out optical cable of the embodiment of the utility model realizes the grouping or classification of numerous optical units by setting a plurality of independent inner holes. Multiple optical units in the same group are an optical unit group. When the optical cable is hollow-out and spliced, the optical unit group to which the optical unit belongs can be identified first, and then the corresponding optical unit can be identified within the optical unit group, thereby facilitating the rapid identification of the optical units and improving the efficiency of hollow-out and splicing.

[0018] Secondly, since many light units are distributed in different inner holes, the number of light units in the same independent space is relatively small, thereby reducing the friction force between the light units in the same space, which is conducive to increasing the length of the splicing, reducing the difficulty of the splicing, and improving the operability of the splicing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional schematic diagram of a hollow-out optical cable according to an embodiment of the utility model.

[0020] Figure 2 It is a cross-sectional schematic diagram of a hollow-out optical cable according to another embodiment of the utility model.

[0021] Reference numerals:

[0022] Sheath 1; inner hole 11; mark 12; tear 13; protrusion 14; main body 15;

[0023] Light unit group 2; Light unit 21;

[0024] Reinforcement 3. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0026] The present invention is based on the inventor's discovery and understanding of the following facts and problems:

[0027] The conventional splicing optical cables in the prior art have the following disadvantages during splicing operations:

[0028] 1) When stripping the jacket, professional operating skills and special stripping tools are required. Especially when it comes to high-altitude operations and narrow space operations, the requirements for the digging and splicing operations are high, and the construction is time-consuming and laborious.

[0029] 2) The optical units of the optical cable are all located in the space inside the sheath 1. When there are many optical units, multiple optical units are mixed together. In the weak current room with insufficient light and in the ceiling, it is difficult for operators to find and identify the optical units.

[0030] 3) Glass fiber reinforced plastic rods are usually set as reinforcements in the spliced ​​optical cable, and the plastic rods are generally a pair and symmetrically distributed in the sheath wall. The main reasons for choosing this type of reinforcement instead of metal reinforcements are: first, this reinforcement is different from metal reinforcements, has no memory and is linear. Its supporting function enables the optical cable to maintain good linearity when it is bent, and can return to its original state, which is conducive to splicing; second, because the reinforcement is located in the sheath wall, the sheath thickness around the reinforcement is generally not too thick due to the size of the optical cable. If metal reinforcements are used, once bent, the metal reinforcements will deform, resulting in the metal reinforcements forming bending memory and generating continuous stress, which may cause the reinforcements to be exposed and the sheath to crack during the long-term use of the optical cable.

[0031] However, although the use of glass fiber reinforced plastic rods avoids the above problems, it also creates problems with optical cable splicing. Since glass fiber reinforced plastic rods have a certain bending radius limit, when the bending radius is less than the specified value, the plastic rod will disintegrate and break. Therefore, when the optical cable breaks unexpectedly and needs to be spliced, the reinforcement cannot be wrapped and fixed in the same way as metal reinforcements, and this type of optical cable cannot be reliably fixed when spliced ​​in the junction box. In addition, the plastic rods are embedded in the sheath walls on both sides, which also means that the optical cable can only be bent in a direction perpendicular to the plane where the two plastic rods are located, reducing the flexibility of operation.

[0032] Based on the above facts and problems, the utility model provides a splicing optical cable.

[0033] The trenched optical cable of the embodiment of the utility model comprises a sheath 1 and a plurality of optical unit groups 2. The sheath 1 may be made of polyethylene or other materials. The sheath 1 is provided with a plurality of inner holes 11 extending along the extension direction of the sheath 1.

[0034] For example, Figure 1 As shown, the sheath 1 may be provided with two inner holes 11, and both inner holes 11 may be rectangular holes. In some other embodiments, the cross-section of the inner hole 11 may also be circular, elliptical, or other polygonal. The two inner holes 11 may be arranged relative to each other in the vertical direction. In some other embodiments, the inner holes 11 may also be provided with three, four, five, or other numbers.

[0035] The plurality of light unit groups 2 are assembled in a one-to-one correspondence in the plurality of inner holes 11, and each light unit group 2 includes a plurality of light units 21. For example, Figure 1 As shown, there can be two optical unit groups 2, each of which can include two optical units 21, and the optical unit 21 can include a microtube, multiple optical fibers, etc., and the multiple optical fibers can be fixed in the microtube. The two optical monocular groups can be respectively assembled in the two inner holes 11.

[0036] In some other embodiments, the number of light unit groups 2 may be three, four, five, etc., and each light unit group 2 may include three, four, five, six, etc. light units 21.

[0037] When performing a splicing operation on the splicing optical cable of the embodiment of the utility model, the optical unit group 2 where the optical unit 21 is located can be first identified, and then the corresponding optical unit 21 can be identified in the optical unit group 2, thereby facilitating the rapid identification of the optical unit 21 and improving the efficiency of splicing.

[0038] Secondly, since many light units 21 are distributed in different inner holes 11, the number of light units 21 in the same independent space is relatively small, thereby reducing the friction force between the light units 21 in the same space, which is conducive to increasing the length of the splicing, reducing the difficulty of the splicing, and improving the operability of the splicing.

[0039] In some embodiments, the outer surface of the sheath 1 is provided with a mark 12, the position of the mark 12 corresponds to the position of the inner hole 11 and is used to identify different inner holes 11. Figure 1 As shown, the mark 12 can be integrally formed on the outer surface of the sheath 1, the number of the marks 12 can be the same as the number of the inner holes 11, each mark 12 can be arranged on the outer wall surface of the sheath 1 corresponding to the inner hole 11, and each mark 12 can have its own distinguishing feature. With the help of different distinguishing features, different inner holes 11 can be identified, and then the light unit group 2 where the corresponding light unit 21 is located can be quickly found, thereby improving the convenience of finding the corresponding light unit 21.

[0040] In some embodiments, the mark 12 includes at least one of the following: a color bar, an identification line. For example, the mark 12 may be a color bar, and two color bars may be distinguished by different arrangements of different color blocks, or by setting different numbers of color blocks. In some other embodiments, the mark 12 may also be an identification line, and the identification line may be a convex ridge integrally formed with the outer peripheral wall of the sheath 1, and the lengths of the multiple identification lines may be different. When in use, the corresponding light unit group 2 may be quickly found by identifying the lengths of different identification lines.

[0041] In some embodiments, the sheath 1 is provided with a tearing notch 13, and the tearing notch 13 is used to reduce the distance between the outer surface of the sheath 1 and the inner hole 11 so that the sheath 1 can be easily torn from the tearing notch 13. Figure 1 As shown, the tearing notch 13 can be a groove arranged on the outer wall of the sheath 1, and the bottom of the groove can be close to the inner hole 11, thereby, the wall thickness of the sheath 1 can be thinnest between the bottom of the groove and the inner hole 11 and a weak position is formed, so that the sheath 1 can be easily torn manually from the weak position, avoiding the situation in the prior art that the sheath 1 needs to be peeled off with the help of tools and professional operating skills, reducing the difficulty of the splicing operation and improving the operating efficiency.

[0042] In some embodiments, the width of the tear 13 gradually decreases along the direction from the outer surface of the sheath 1 to the inner hole 11. Figure 1 As shown, the tearing notch 13 can be a V-shaped groove. When in use, the two groove walls of the V-shaped groove can be broken apart to both sides, so that the sheath 1 can be cracked from the groove bottom angle of the V-shaped groove, limiting the development direction of the crack torn from the tearing notch 13, and improving the predictability and controllability of the tearing process of the tearing notch 13.

[0043] In some embodiments, the trenched optical cable includes a strength member 3 , which is disposed at the center of the jacket 1 , and a plurality of inner holes 11 are disposed on the circumferential side of the strength member 3 and are arranged at intervals along the circumference of the strength member 3 .

[0044] For example, Figure 1 As shown, the sheath 1 can be a symmetrical structure, specifically, the upper and lower parts of the sheath 1 can be arranged in mirror symmetry. The reinforcement member 3 can be a long rod and extend along the symmetry axis of the sheath 1. The reinforcement member 3 can protect the sheath 1 when it is pulled, and can also enhance the rigidity of the spliced ​​optical cable.

[0045] There may be two inner holes 11 , one of which may be located above the reinforcement 3 , and the other of which may be located below the reinforcement 3 . The two inner holes 11 may be arranged in mirror symmetry with respect to the reinforcement 3 .

[0046] Therefore, on the one hand, the overall structure of the spliced ​​optical cable can be symmetrical and relatively balanced, and on the other hand, the reinforcement member 3 is arranged at the center position of the sheath 1, so that the reinforcement member 3 is fully wrapped, avoiding the situation where the sheath 1 is easily cracked and leaked due to the proximity of the reinforcement member 3 to the outer wall of the sheath 1 when the spliced ​​optical cable is bent, thereby improving the stability and reliability of the structure.

[0047] In some embodiments, the sheath 1 includes a plurality of protrusions 14 , which are arranged at intervals along the circumference of the sheath 1 , and the plurality of inner holes 11 are disposed in the plurality of protrusions 14 in a one-to-one correspondence.

[0048] For example, Figure 2 As shown, the protrusion 14 may be ridge-shaped and may be provided with three protrusions, the extension direction of the protrusion 14 is consistent with the extension direction of the sheath 1, and the three protrusions 14 may be arranged at equal intervals along the circumferential direction of the sheath 1, that is, the angle formed between any two adjacent protrusions 14 may be 120 degrees. There may also be three inner holes 11, and the three inner holes 11 may be provided in the three protrusions 14 respectively.

[0049] On the one hand, the setting of the protrusion 14 facilitates the arrangement of the inner hole 11 and provides a sufficient arrangement area for the arrangement of the inner hole 11. On the other hand, the circumferential setting of the protrusion 14 also makes the inner holes 11 arranged at intervals along the circumference of the sheath 1, so that the distribution of the optical unit group 2 has a regularity, and the protrusion 14 also has an identification function, which facilitates the identification of the inner holes 11 at different positions in the subsequent splicing process.

[0050] In some other embodiments, the number of the protrusions 14 may be two, four, five, six, etc.

[0051] In some embodiments, the sheath 1 includes a main body 15 , a plurality of protrusions 14 are integrally formed on the outer peripheral side of the main body 15 and arranged at intervals along the circumference of the main body 15 , and the reinforcement 3 is disposed in the main body 15 .

[0052] For example, Figure 2 As shown, the main body 15 can be generally cylindrical, and the extension direction of the main body 15 is also consistent with the extension direction of the sheath 1. The above-mentioned multiple protrusions 14 can be integrally formed on the outer peripheral side of the main body 15 and arranged at equal intervals along the circumferential direction of the main body 15. The reinforcement 3 can be arranged at the axial position of the main body 15.

[0053] Thus, a certain distance is maintained between the reinforcement member 3 and the inner hole 11 , thereby preventing the reinforcement member 3 from extending into the inner hole 11 or being exposed from the surface of the sheath 1 when being bent, and further ensuring the stability of the structure.

[0054] In some embodiments, Figure 2As shown, the outer surface of each protrusion 14 is provided with two tearing notches 13, the two tearing notches 13 are arranged opposite to each other in the circumferential direction of the sheath 1, and the inner hole 11 in each protrusion 14 is located between the two tearing notches 13. When in use, the outer end portion of the protrusion 14 can be torn off from the two tearing notches 13, that is, the opening developed between the two tearing notches 13 on the same protrusion 14 will be connected and pass through the inner hole 11 in the protrusion 14, further improving the convenience of the digging operation.

[0055] In some embodiments, the reinforcement member 3 is a metal reinforcement member 3. For example, the reinforcement member 3 may be a steel wire or the like. The reinforcement member 3 made of metal material has a memory function on the one hand, so that the spliced ​​cable can be kept in a corresponding bending state after the spliced ​​cable is bent, and on the other hand, compared with reinforcement members 3 such as reinforced plastic rods, the reinforcement member 3 made of metal material is also convenient for winding and fixing or splicing and fixing in a splice box, thereby improving the convenience of splicing and fixing.

[0056] A specific example of the optical cable splicing of the present invention is described below.

[0057] The trenched optical cable of the embodiment of the utility model comprises a sheath 1 and a plurality of optical units 21 .

[0058] A plurality of spaces (equivalent to the inner holes 11) are provided inside the sheath 1. During processing, a plurality of light units 21 are grouped to form a plurality of light unit groups 2, and then the plurality of light unit groups 2 can be stored in the corresponding spaces. In this way, the number of light units 21 in a single space is reduced, and the situation where a plurality of light units 21 are simultaneously located in the same space is avoided. In addition, the number of light units 21 in the same space is reduced, thereby reducing the friction between the light units 21, which is conducive to increasing the length of the splicing and reducing the difficulty of the splicing.

[0059] One or more continuous longitudinal color marks (equivalent to the above-mentioned mark 12) are arranged on the outside of the sheath 1 to help construction workers quickly locate the space where the light unit 21 is to be removed.

[0060] V-shaped tearing notches 13 are symmetrically arranged near multiple spaces inside the sheath 1. The sheath 1 at the V-shaped tearing notches 13 is relatively thin, and construction workers can easily tear the sheath 1 from there by hand, so as to find the required light unit 21.

[0061] It should be noted that, according to the number of optical units 21 to be connected, multiple spaces for accommodating optical units 21 can be set, and the multiple spaces for accommodating optical units 21 are distributed circumferentially around the center of the entire optical cable. Each space for accommodating an optical unit 21 is provided with a corresponding "V"-shaped tear 13, and corresponding color codes of multiple colors or multiple types of identification lines can be provided on the outer peripheral wall of the sheath 1 to help construction personnel quickly locate the optical unit 21.

[0062] A metal reinforcement member 3 is provided at the center of the optical cable, so that the hollow optical cable can be fixed in the same way as a common outdoor optical cable is fixed in a joint box, which is convenient for maintenance by construction personnel.

[0063] The optical cable splicing of this example has the following beneficial effects:

[0064] 1. The sheath is provided with a "V"-shaped tearing notch, and the construction workers can peel the sheath with bare hands. Compared with the ordinary spliced ​​optical cable, the optical cable of the utility model does not need to use professional sheath stripping tools to strip the sheath, and the construction workers do not need to be trained to learn how to use the stripping tools. Especially in small spaces or high-altitude operation scenes, the sheath can be stripped by hand without the use of tools. This method greatly facilitates on-site construction workers, reduces the difficulty of operation, and saves construction time.

[0065] 2. Multiple spaces are set up inside the optical cable. Optical units are grouped and stored in multiple spaces. The operator first locates the space, and then quickly finds the optical unit to be spliced ​​according to the color of the optical unit. In the weak current room with insufficient light and the ceiling, this method helps the operator to accurately and quickly identify the optical unit to be spliced. In addition, by storing multiple optical units in groups, the number of optical units in a single space is reduced, thereby reducing the friction between the optical units during splicing, thereby increasing the splicing length and reducing the difficulty of splicing.

[0066] 3. Ordinary hollow-out optical cables mainly consider the linearity of the optical cable and the problem of sheath cracking, and use glass fiber reinforced plastic rods to embed them into the sheath wall. However, the disadvantage is that the glass fiber reinforced plastic rods cannot be wound and fixed in the joint box, resulting in the inability to connect ordinary hollow-out optical cables. The hollow-out optical cable of the utility model is provided with a metal reinforcement member in the center of the optical cable, which, on the one hand, avoids the risk of the reinforcement member being exposed and the sheath cracking, and on the other hand, allows the optical cable to be bent in any direction, and also allows the optical cable to be fixed in the joint box in a conventional manner for optical cable connection, thereby improving the convenience of the connection operation.

[0067] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A spliced ​​optical cable, characterized in that: include: A sheath, wherein the sheath is provided with a plurality of inner holes extending along an extension direction of the sheath; A plurality of light unit groups are assembled in the plurality of inner holes in a one-to-one correspondence, and each of the light unit groups includes a plurality of light units.

2. The optical cable according to claim 1, characterized in that: The outer surface of the sheath is provided with a mark, the position of the mark corresponds to the position of the inner hole and is used to identify different inner holes.

3. The optical cable according to claim 2, characterized in that: The mark includes at least one of the following: a color bar and a marking line.

4. The optical cable according to claim 1, characterized in that: The sheath is provided with a tearing notch, and the tearing notch is used to reduce the distance between the outer surface of the sheath and the inner hole so that the sheath can be easily torn from the tearing notch.

5. The trenching optical cable according to claim 4, characterized in that: The width of the tear gradually decreases along the direction from the outer surface of the sheath to the inner hole.

6. The optical cable according to claim 1, characterized in that: The invention comprises a reinforcing member, wherein the reinforcing member is arranged at the center of the sheath, and a plurality of inner holes are arranged at the peripheral side of the reinforcing member and are arranged at intervals along the circumferential direction of the reinforcing member.

7. The optical cable according to claim 6, characterized in that: The sheath comprises a plurality of protrusions, the plurality of protrusions are arranged at intervals along the circumference of the sheath, and the plurality of inner holes are arranged in the plurality of protrusions in a one-to-one correspondence.

8. The optical cable according to claim 7, characterized in that: The sheath comprises a main body, a plurality of protrusions are integrally formed on the outer peripheral side of the main body and are arranged at intervals along the circumference of the main body, and the reinforcement is arranged in the main body.

9. The trench optical cable according to claim 7, characterized in that: The outer surface of each protrusion is provided with two tearing notches, the two tearing notches are arranged opposite to each other in the circumferential direction of the sheath, and the inner hole in each protrusion is located between the two tearing notches.

10. The trench optical cable according to any one of claims 6 to 9, characterized in that: The reinforcement member is a metal reinforcement member.

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