Stretch-resistant single-mode single-core armored jumper wire

Abstract

The utility model provides an anti-stretching single-mode single-core armored jumper wire, comprising a jumper wire main body, one side of the jumper wire main body is provided with a fiber core, a wrapping layer, a tight sleeve layer, an aramid fiber layer and a rubber sheath from inside to outside, one end of the jumper wire main body is connected with a jumper wire joint, a flexible rubber hose is sleeved between the tight sleeve layer and the aramid fiber layer, and the rubber sheath is provided with a sheath. A first spiral steel wire is embedded in the flexible rubber pipe, a rubber sliding pipe is sleeved on the outer gap of the jumper wire body, a row of two hanging plates arranged along the length direction are fixedly connected on the outer peripheral wall of the rubber sliding pipe, and hanging holes are arranged on the hanging plates. According to the utility model, a stainless steel tube in the jumper wire main body in the prior art is replaced by the flexible rubber tube with the built-in first spiral steel wire, so that the jumper wire has the advantage of large bending degree on the premise that the tensile strength is ensured; meanwhile, the arrangement of the first spiral steel wire can effectively avoid the problem of fiber core breakage caused by the excessive bending of the jumper.

Description

Technical Field

[0001] The utility model relates to the technical field of single-mode jumpers, and specifically relates to an anti-tensile single-mode single-core armored jumper. Background Art

[0002] Optical fiber jumpers are similar to coaxial cables, except that they do not have a mesh shielding layer. The center is a glass core for light propagation. In multimode optical fibers, the diameter of the core is 50μm - 65μm, which is roughly equivalent to the thickness of a human hair. While the diameter of the core of a single-mode optical fiber is 8μm - 10μm. The core is surrounded by a glass jacket with a refractive index lower than that of the core to keep the optical fiber within the core. Outside that is a thin plastic outer jacket to protect the jacket. The central glass core of a single-mode optical fiber is very thin and can only transmit one mode of optical fiber. Therefore, its intermodal dispersion is very small and it is suitable for long-distance communication. However, there are still material dispersion and waveguide dispersion. Thus, single-mode optical fibers have relatively high requirements for the spectral width and stability of the light source, that is, the spectral width should be narrow and the stability should be good. In Ethernet with a speed of 100Mbps and even Gigabit Ethernet with a speed of 1G, single-mode optical fibers can support transmission distances exceeding 5000m. Optical fibers and glass are made of the same material, which is silicon dioxide. The reason why an optical fiber can be bent is due to its structure. Since the optical fiber is very thin, it is very flexible. If glass could be made as thin as an optical fiber, it could also be bent, but an optical fiber can only be bent at a large angle, otherwise it will break just like glass.

[0003] The utility model with the publication number CN207424303U proposes a single-mode armored jumper, which includes a jumper body, an aramid layer, a rubber sheath, a tight jacket layer and a fiber core, a sliding tube and a bending through hole. The jumper body includes a rubber sheath, an aramid layer, a tight jacket layer and a fiber core. An aramid layer is arranged inside the rubber sheath, and a soft iron wire is arranged between the rubber sheath and the aramid layer. A stainless steel tube is arranged inside the aramid layer, and a tight jacket layer is arranged inside the stainless steel tube. A fiber core is arranged inside the tight jacket layer, and a coating layer covers the outside of the fiber core. A cladding layer is arranged between the coating layer and the tight jacket layer. A sliding tube is arranged outside the jumper body, and a bending through hole is opened inside the sliding tube. The utility model solves the problems that the traditional optical fiber jumper is easy to break and damage during long-distance transmission, and the attenuation of light during transmission is caused by excessive bending during installation by setting the jumper body, the aramid layer, the rubber sheath, the tight jacket layer and the fiber core, the sliding tube and the bending through hole.

[0004] However, the above-mentioned existing technologies still have the following deficiencies in use: 1. A stainless steel tube is provided inside the jumper body. Although the stainless steel tube can improve the tensile strength, the large hardness of the stainless steel tube results in a small bending degree of the entire jumper, which is not conducive to turning during jumper wiring; 2. In order to avoid breakage when the jumper is bent, a sliding tube is sleeved outside the jumper body, and a bending through-hole is opened inside the sliding tube. When a part of the jumper body needs to be bent, the sliding tube is slid to the position where bending is required, and the bending through-hole is used to assist the bending of the jumper body. However, the bending through-hole in the sliding tube is a fixed structure. When bending is not required, the bending through-hole still functions, causing a part of the jumper body to be in a bent state, which is not conducive to the straight wiring of the jumper body.

[0005] Therefore, the present utility model provides an anti-tensile single-mode single-core armored jumper. Content of the Utility Model

[0006] Aiming at the deficiencies existing in the prior art, the purpose of the present utility model is to provide an anti-tensile single-mode single-core armored jumper to solve the problems raised in the above-mentioned background technology. The present utility model has the advantages that the bending of the jumper body is more convenient, which is convenient for bending wiring, and also has a bending and non-bending switching function, making the wiring of the jumper body more tidy.

[0007] In order to achieve the above purpose, the present utility model is realized through the following technical solutions: An anti-tensile single-mode single-core armored jumper includes a jumper body. One side of the jumper body is provided with a fiber core, a cladding, a tight jacket layer, an aramid layer and a rubber sheath from the inside to the outside. One end of the jumper body is connected with a jumper connector. A soft rubber tube is sleeved between the tight jacket layer and the aramid layer, and a first spiral steel wire is embedded in the soft rubber tube. A rubber sliding tube is sleeved outside the jumper body with a gap. A row of two hanging plates arranged along the length direction is fixedly connected to the outer peripheral wall of the rubber sliding tube, and a hanging hole is opened on the hanging plate. It also includes a connecting rod, and one side of the connecting rod is fixedly connected with insertion shafts near both ends and inserted into the hanging holes.

[0008] Furthermore, the number of the first spiral steel wires is at least three and is circumferentially and uniformly distributed relative to the axis of the rubber sheath.

[0009] Furthermore, a second spiral steel wire is nested inside the rubber sliding tube.

[0010] Furthermore, the number of the second spiral steel wires is at least three and is circumferentially and uniformly distributed relative to the axis of the rubber sliding tube.

[0011] Furthermore, a number of rings that are in interference fit with the rubber sheath are nested inside the rubber sliding tube.

[0012] Furthermore, the connecting rod is of an arc-shaped rod structure, and a C-shaped clamp that is clamped with the rubber sheath is fixedly connected to the middle of the connecting rod.

[0013] Further, a protective rubber pad is adhesively bonded to the inner wall of the C-shaped card.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, by replacing the stainless steel tube in the jumper main body of the prior art with a soft rubber tube provided with a first spiral steel wire, the jumper has the advantage of a large bending degree while ensuring the tensile strength. At the same time, the setting of the first spiral steel wire can effectively avoid the problem of the fiber core breaking caused by excessive bending of the jumper.

[0016] 2. In the present utility model, a rubber sliding tube provided with a second spiral steel wire is sleeved outside the jumper, and then a rear connecting rod is detachably connected to the outside of the rubber sliding tube. The connecting rod is in an arc structure and is inserted and matched with the rubber sliding tube. When inserted, the jumper main body can be bent, which is convenient for bending wiring. When bending wiring is not required, the connecting rod is removed, and at this time, the jumper main body is in a straight state. Therefore, it has the advantage of more convenient switching between straight and non-straight wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an anti-tensile single-mode single-core armored jumper of the present utility model;

[0018] Figure 2 is a schematic cross-sectional view of the jumper main body of an anti-tensile single-mode single-core armored jumper of the present utility model;

[0019] Figure 3 is a schematic internal structure diagram of the soft rubber tube of an anti-tensile single-mode single-core armored jumper of the present utility model;

[0020] Figure 4 is a schematic internal structure diagram of the rubber sliding tube of an anti-tensile single-mode single-core armored jumper of the present utility model.

[0021] In the figure: 1. Fiber core; 2. Cladding; 3. Tight jacket layer; 4. Aramid layer; 5. Rubber sheath; 7. Soft rubber tube; 71. First spiral steel wire; 8. Rubber sliding tube; 81. Hanging plate; 811. Hanging hole; 82. Second spiral steel wire; 83. Sleeve ring; 9. Jumper connector; 101. Connecting rod; 1011. C-shaped card; 10111. Protective rubber pad; 1012. Insertion shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please refer to Figures 1 to 4, the present utility model provides a technical solution: an anti-tensile single-mode single-core armored jumper, including a jumper body. On one side of the jumper body from the inside to the outside, there are a fiber core 1, a cladding 2, a tight jacket layer 3, an aramid layer 4, and a rubber sheath 5. The cladding 2, the tight jacket layer 3, the aramid layer 4, and the rubber sheath 5 all adopt the structures in the patent documents mentioned in the background art. One end of the jumper body is connected to a jumper connector 9, and the jumper connector 9 is hermetically connected to the fiber core 1.

[0024] In this technical solution, a soft rubber tube 7 is sleeved between the tight jacket layer 3 and the aramid layer 4. A first helical steel wire 71 is embedded in the soft rubber tube 7. The setting of the first helical steel wire 71 makes this armored jumper easy to bend, and at the same time, it will not be over-bent, and it can also ensure the tensile strength.

[0025] Furthermore, the number of the first helical steel wires 71 is at least three and they are circumferentially evenly distributed relative to the axis of the rubber sheath 5. The setting of the three first helical steel wires 71 can ensure that the jumper body will not be over-bent to cause the fiber core 1 to break.

[0026] Among them, a rubber sliding tube 8 is sleeved in the external gap of the jumper body. A row of two hanging plates 81 arranged along the length direction is fixedly connected to the outer peripheral wall of the rubber sliding tube 8. A hanging hole 811 is opened on the hanging plate 81. It also includes a connecting rod 101. On one side of the connecting rod 101, a plug shaft 1012 that is close to both ends and is inserted into the hanging hole 811 is fixedly connected. The functions of the hanging plate 81 and the connecting rod 101 are to assist this armored jumper to adaptively bend and facilitate the routing and turning of this armored jumper. When turning is not required, the connecting rod 101 is removed, and at this time, the rubber sliding tube 8 will return to a straight state.

[0027] Furthermore, the connecting rod 101 is of an arc-shaped rod structure. A C-shaped clamp 1011 that is clamped with the rubber sheath 5 is fixedly connected to the middle of the connecting rod 101. The function of this setting is to facilitate the fixed connection between the connecting rod 101 and the rubber sliding tube 8. Moreover, after the connecting rod 101 and the rubber sliding tube 8 are clamped, it can also stabilize the bent part on the armored jumper and avoid the problem that the bent part is broken due to accidental collision. Among them, a protective rubber pad 10111 is adhered to the inner wall of the C-shaped clamp 1011.

[0028] Among them, a plurality of rings 83 that are in interference fit with the rubber sheath 5 are nested in the rubber sliding tube 8. The function of the rings 83 is to increase the frictional resistance between the rubber sliding tube 8 and the rubber sheath 5, so that the rubber sliding tube 8 can stay stably after moving on the rubber sheath 5, and it has the function of preventing the rubber sliding tube 8 from loosening relative to the rubber sheath 5.

[0029] In this embodiment, a second helical steel wire 82 is nested inside the rubber sliding tube 8. Further, the number of the second helical steel wires 82 is at least three and they are circumferentially and uniformly distributed relative to the axis of the rubber sliding tube 8. This arrangement can improve the strength of the rubber sliding tube 8 against bending deformation and can further protect the fiber core 1 inside the jumper body passing through it.

[0030] Working principle: When the armored jumper is routed in a straight line, the connecting rod 101 can be removed. At this time, the rubber sheath 5 with the built-in first helical steel wire 71 can ensure the tensile strength of the armored jumper. When there is a bent section during the routing of the armored jumper, manually slide the rubber sliding tube 8 to the position where bending is required, then manually clip the C-shaped clip 1011 in the middle of the bent part of the rubber sheath 5, and then manually bend the rubber sheath 5 at the current position so that the two hanging holes 811 on the rubber sliding tube 8 are inserted into the insertion shafts 1012 at both ends of the connecting rod 101. At this time, the bent part of the armored jumper is shaped, and it can effectively prevent the jumper at the current bent part from breaking.

[0031] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tensile-resistant single-mode single-core armored jumper, comprising a jumper body, on one side of which from inside to outside are provided with a fiber core (1), a cladding (2), a tight buffer layer (3), an aramid layer (4) and a rubber sheath (5). One end of the jumper body is connected with a jumper connector (9), characterized in that, A soft rubber tube (7) is sleeved between the tight sleeve layer (3) and the aramid layer (4). A first helical steel wire (71) is embedded in the soft rubber tube (7). A rubber sliding tube (8) is sleeved in the outer gap of the jumper main body. A row of two hanging plates (81) arranged along the length direction is fixedly connected to the outer peripheral wall of the rubber sliding tube (8). A hanging hole (811) is formed in the hanging plate (81). A connecting rod (101) is further included. A plug shaft (1012) that is close to both ends and inserted into the hanging hole (811) is fixedly connected to one side of the connecting rod (101).

2. The single-mode single-core armored jumper with anti-tensile property according to claim 1, characterized in that: The number of the first helical steel wires (71) is at least three and they are circumferentially and uniformly distributed relative to the axis of the rubber sheath (5).

3. The single-mode single-core armored jumper with anti-tensile property according to claim 1, characterized in that: A second helical steel wire (82) is nested in the rubber sliding tube (8).

4. The anti-tensile single-mode single-core armored jumper according to claim 3, characterized in that: The number of the second helical steel wires (82) is at least three and they are circumferentially and uniformly distributed relative to the axis of the rubber sliding tube (8).

5. The single-mode single-core armored jumper with anti-tensile property according to claim 1, wherein: A plurality of collar rings (83) that are in interference fit with the rubber sheath (5) are nested in the rubber sliding tube (8).

6. The single-mode single-core armored jumper with anti-tensile property according to claim 1, characterized in that: The connecting rod (101) is of an arc-shaped rod structure. A C-shaped clip (1011) that is clamped with the rubber sheath (5) is fixedly connected to the middle of the connecting rod (101).

7. The single-mode single-core armored jumper with anti-tensile property according to claim 6, characterized in that: A protective rubber pad (10111) is bonded to the inner wall of the C-shaped clip (1011).

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