Lead-in optical cable for FTTX

Abstract

The invention belongs to the technical field of optical cables, and discloses a leading-in optical cable for FTTX, which is provided with a cable core and an outer sheath wrapped outside the cable core, and is characterized in that the cable core is composed of a lining body, a plurality of bridge bodies and a plurality of leading-in sheaths, the leading-in sheaths are internally provided with optical fibers and two reinforcing pieces, the two reinforcing pieces are respectively positioned on two sides of the optical fibers, and the lining body is arranged on the two sides of the optical fibers. The optical fibers and the reinforcing pieces are distributed along the long axis of the leading-in sheath, one end of each bridge body is connected with the outer surface of the lining body, the other end of each bridge body is connected with the surface of one end of the long axis or the short axis of the leading-in sheath, and a side cavity is formed between every two adjacent bridge bodies. The invention has the main beneficial technical effects that the introduced sheath is convenient to take and place, the occupied space is small, the space utilization rate is high, the appearance size is small, the material consumption is low, and the use is flexible.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical cables, and particularly relates to an access optical cable for FTTX. Background Art

[0002] With the continuous growth of broadband access demand, users need separate optical fibers to enter the home, which can greatly improve the bandwidth and the security of information transmission.

[0003] Most of the existing access optical cables adopt the method of stranding multiple units, placing them in a cavity, and then covering them with a sheath or a protective layer. The main disadvantages of this method are inconvenient access to the units, large space occupation, low space utilization rate, and large external dimensions.

[0004] CN115097588A discloses a multi-unit butterfly access optical cable, which has multiple butterfly units and multiple engaging components; the butterfly unit is composed of an optical fiber, a strengthening member, and a unit sheath, and the unit sheath has a first engaging port and a second engaging port; the engaging component is composed of an engaging body; in the assembled state, the outer edges of all the butterfly units are on the same cylindrical surface, and one end of the engaging component between adjacent butterfly units is embedded in the second engaging port of one butterfly unit, and the other end of the engaging component between adjacent butterfly units is embedded in the first engaging port of another butterfly unit.

[0005] CN111667950A discloses a layered distributed optical cable, which has a central strengthening member, a light guiding component, and an electrically conductive component. The electrically conductive component is composed of an electrically conductive body and an insulating layer. It is characterized in that there is also an outer elevated component, which is composed of an outer sleeve body and an outer elevated body. One end of the outer elevated body in the outer elevated component is connected to the outer edge of the central strengthening member, and the other end is connected to the outer sleeve body. The outer sleeve body has a cavity, and the light guiding component is located in the cavity. Accommodating grooves are provided on both side walls of the outer elevated body of the outer elevated component, and the positions of the accommodating grooves of adjacent outer elevated components correspond to each other. A part of the electrically conductive component is located in the accommodating grooves of adjacent outer elevated components, and the adjacent outer elevated components clamp the electrically conductive component located in the accommodating grooves.

[0006] The above-mentioned existing technologies and combinations cannot solve the problems existing in the prior art. Summary of the Invention

[0007] To solve the above problems, the object of the present invention is to disclose an access optical cable for FTTX, which is realized by the following technical solutions.

[0008] An access optical cable for FTTX, used as an image sensor in a physical sensor, has a cable core and an outer sheath, and the outer sheath covers the cable core. It is characterized in that: the cable core is composed of an inner liner, a plurality of bridge bodies, and a plurality of access sheaths. The access sheath has an optical fiber and two reinforcing members inside. The two reinforcing members are respectively located on both sides of the optical fiber, and the optical fiber and the reinforcing members are distributed along the long axis of the access sheath. One end of the bridge body is connected to the outer surface of the inner liner, and the other end of the bridge body is connected to the surface of one end of the long axis or short axis of the access sheath. A side cavity is formed between adjacent bridge bodies.

[0009] The above-mentioned access optical cable for FTTX is characterized in that: the inner liner, the plurality of bridge bodies, and the access sheath are integrally formed and are of an integral structure.

[0010] An access optical cable for FTTX has a cable core, an outer sheath, and a plurality of access sheaths. The outer sheath covers the cable core. It is characterized in that: the cable core is composed of an inner liner, a plurality of bridge bodies, and a plurality of clamping members. The access sheath has an optical fiber and two reinforcing members inside. The two reinforcing members are respectively located on both sides of the optical fiber, and the optical fiber and the reinforcing members are distributed along the long axis of the access sheath. One end of the bridge body is connected to the outer surface of the inner liner, and the other end of the bridge body is connected to the surface of one end of the short axis of the clamping member. A side cavity is formed between adjacent bridge bodies. The clamping member has a clamping cavity inside, and the outer end of the clamping member has an opening. The access sheath is embedded in the clamping cavity.

[0011] The above-mentioned access optical cable for FTTX is characterized in that: the bridge bodies are symmetrically distributed on the outer surface of the inner liner.

[0012] The above-mentioned access optical cable for FTTX is characterized in that: the cross-section of the access sheath is oval.

[0013] The above-mentioned access optical cable for FTTX is characterized in that: adjacent access sheaths are adjacent or have a gap.

[0014] The above-mentioned access optical cable for FTTX is characterized in that: when the other end of the bridge body is connected to the surface of one end of the short axis of the access sheath, the plane passing through the central axis of the inner liner bisects the bridge body and coincides with the plane where the short axis of the access sheath is located; when the other end of the bridge body is connected to the surface of one end of the long axis of the access sheath, the plane passing through the central axis of the inner liner bisects the bridge body and coincides with the plane where the long axis of the access sheath is located.

[0015] The above-mentioned access optical cable for FTTX is characterized in that: it also has a plurality of power transmission components, and the power transmission components are located in the side cavity.

[0016] The above-mentioned access optical cable for FTTX is characterized in that: it also has a central reinforcing member, and the central reinforcing member is located inside the inner liner.

[0017] The above-mentioned drop cable for FTTX does not have an outer sheath.

[0018] For the above-mentioned drop cable for FTTX, the outermost edges of the drop sheaths are on the same circumference.

[0019] The above-mentioned drop cable for FTTX is characterized in that the material of the central strength member is steel wire, aluminum wire, copper wire, glass fiber reinforced plastic, aramid yarn, steel stranded wire or aluminum stranded wire.

[0020] The above-mentioned drop cable for FTTX is characterized in that the material of the outer sheath is plastic.

[0021] The above-mentioned drop cable for FTTX is characterized in that the material of the inner liner is plastic.

[0022] The above-mentioned drop cable for FTTX is characterized in that the material of the bridge body is plastic.

[0023] The above-mentioned drop cable for FTTX is characterized in that the material of the drop sheath is plastic.

[0024] The above-mentioned drop cable for FTTX is characterized in that the material of the conductor is copper, aluminum, copper alloy or aluminum alloy.

[0025] The above-mentioned drop cable for FTTX is characterized in that the material of the insulating layer is plastic.

[0026] The above-mentioned drop cable for FTTX is characterized in that the optical fiber is a single-mode or multi-mode optical fiber in the prior art.

[0027] The above-mentioned drop cable for FTTX is characterized in that the material of the strengthening member is steel wire, aluminum wire, copper wire, glass fiber reinforced plastic or aramid yarn.

[0028] The above-mentioned drop cable for FTTX is characterized in that the material of the clamping member is plastic.

[0029] The above-mentioned drop cable for FTTX is characterized in that the inner liner, multiple bridge bodies and multiple clamping members are integrally formed, and it is an integral structure.

[0030] This application has the following main beneficial technical effects: The drop sheath is convenient to take and place, occupies a small space, has a high space utilization rate, has a small external dimension, consumes less materials, and is flexible to use. Description of the Drawings

[0031] Figure 1 It is a three-dimensional structural schematic diagram of a dissected part for Embodiment 1.

[0032] Figure 2 is Figure 1 Schematic diagram of an enlarged cross-sectional structure.

[0033] Figure 3 is the schematic diagram of the cross-sectional structure of Embodiment 2.

[0034] Figure 4 is the schematic diagram of the three-dimensional structure of a section of the cable core in Embodiment 1 and Embodiment 2 after dissection.

[0035] Figure 5 is Figure 4 Schematic diagram of an enlarged cross-sectional structure.

[0036] Figure 6 is the schematic diagram of the enlarged cross-sectional structure of Embodiment 3.

[0037] Figure 7 is the schematic diagram of the three-dimensional structure of a section of the cable core in Embodiment 4 after dissection.

[0038] Figure 8 is Figure 7 Schematic diagram of an enlarged cross-sectional structure.

[0039] Figure 9 is the schematic diagram of the three-dimensional structure of a section of the cable core in Embodiment 5 after dissection.

[0040] Figure 10 is Figure 9 Schematic diagram of an enlarged cross-sectional structure. Detailed implementation manners

[0041] In order to enable those skilled in the relevant technical field to better understand and implement this patent, the following provides a detailed description of the labels in the accompanying drawings in conjunction with the specification drawings.

[0042] In the figures: 2 - central strengthening member, 3 - power transmission component, 4 - outer sheath, 11 - inner lining body, 12 - bridge body, 13 - lead-in sheath, 31 - conductor, 32 - insulating layer, 130 - side cavity, 131 - optical fiber, 132 - reinforcing member, 14 - clamping component, 141 - clamping cavity, 142 - opening, 143 - through hole, 121 - tearing groove, C - first cylindrical surface, L - long axis of the lead-in sheath.

[0043] Embodiment 1: Please refer to Figure 1 , 2 and Figure 4 and Figure 5, An optical cable for FTTX introduction, which has a cable core, multiple power transmission components 3, and an outer sheath 4. The power transmission component is composed of a conductor 31 and an insulating layer 32 that covers the conductor. The outer sheath covers the cable core. Its characteristics are as follows: The cable core is composed of an inner liner 11, a central strengthening member 2, multiple bridge bodies 12, and multiple introduction sheaths 13. The central strengthening member is located inside the inner liner. The introduction sheath has an optical fiber 131 and two strengthening members 132 inside. The two strengthening members are respectively located on both sides of the optical fiber. The optical fiber and the strengthening members are distributed along the long axis of the introduction sheath. One end of the bridge body is connected to the outer surface of the inner liner, and the other end of the bridge body is connected to the surface of the introduction sheath. A side cavity 130 is formed between adjacent bridge bodies, and the power transmission component is located in the side cavity.

[0044] For the above-mentioned optical cable for FTTX introduction, its characteristics are as follows: The bridge bodies are symmetrically distributed on the outer surface of the inner liner.

[0045] For the above-mentioned optical cable for FTTX introduction, its characteristics are as follows: The cross-section of the introduction sheath is oval.

[0046] For the above-mentioned optical cable for FTTX introduction, its characteristics are as follows: The plane passing through the central axis of the inner liner bisects the bridge body and coincides with the plane where the short axis of the introduction sheath is located.

[0047] For the above-mentioned optical cable for FTTX introduction, its characteristics are as follows: Adjacent introduction sheaths are either closely adjacent or have a slight gap.

[0048] For the above-mentioned optical cable for FTTX introduction, its characteristics are as follows: The inner liner 11, the central strengthening member 2, multiple bridge bodies 12, and the introduction sheath 13 are integrally formed and are of an integral structure; for example, they are formed by extrusion. During extrusion, the central strengthening member 2, the optical fiber, and the strengthening members are passed through the corresponding die holes of the extrusion head and are stretched and cooled together with the extruded plastic to form the cable core.

[0049] Embodiment 2: Please refer to Figures 3 to 5 , and refer to Figure 1 and Figure 2 , An optical cable for FTTX introduction is basically the same as Embodiment 1, but the difference is that it does not have a power transmission component.

[0050] Furthermore, an optical cable for FTTX introduction is basically the same as Embodiment 1, but the difference is that it does not have a power transmission component and at the same time does not have an outer sheath 4.

[0051] Embodiment 3: Please refer to Figure 6 , and refer to Figures 1 to 5 , An optical cable for FTTX introduction is basically the same as Embodiment 2, but the difference is that it does not have a central strengthening member.

[0052] For an access optical cable for FTTX described above, the outermost edges of the access sheaths are on the same circumference. In this way, the outer sheath is relatively round and smooth after being coated.

[0053] Embodiment 4: Please refer to Figure 7 and Figure 8 and refer to Figures 1 to 6 An access optical cable for FTTX includes a cable core, a plurality of power transmission components, an outer sheath, and a plurality of access sheaths. The power transmission component is composed of a conductor and an insulating layer covering the conductor. The outer sheath covers the cable core. It is characterized in that: the cable core is composed of an inner liner 11, a plurality of bridge bodies 12, and a plurality of clamping components 14. The access sheath has optical fibers and two reinforcing members inside. The two reinforcing members are respectively located on both sides of the optical fiber. The optical fibers and the reinforcing members are distributed along the long axis of the access sheath. One end of the bridge body is connected to the outer surface of the inner liner, and the other end of the bridge body is connected to the surface of the clamping component. A side cavity 130 is formed between adjacent bridge bodies. The clamping component has a clamping cavity 141 inside, and the outer end of the clamping component has an opening 142. The access sheath is embedded in the clamping cavity, and the power transmission component is located in the side cavity.

[0054] For an access optical cable for FTTX described above, it may not have a power transmission component.

[0055] For an access optical cable for FTTX described above, it may not have an outer sheath.

[0056] For an access optical cable for FTTX described above, a central reinforcing member can be added and arranged inside the inner liner.

[0057] For an access optical cable for FTTX described above, the bottom of the clamping component 14 may also have a plurality of through holes 143. The through holes are used for draining water, hot steam, ventilation, and air passage, such as discharging rainwater, dew, etc., and making it dry through air circulation. When the power transmission component generates heat and transfers it to the clamping cavity, it can heat and melt when it is cold and frosty or frozen.

[0058] For an access optical cable for FTTX described above, a tear groove 121 may also be provided near the clamping component at the other end of the bridge body. The tear groove can also be set in any of the above embodiments. It can be on one side or both sides of the bridge body. The purpose is to separate the bridge body from the clamping component or the access sheath, facilitating construction and connection.

[0059] For an access optical cable for FTTX described above, the outer edge of the clamping component is elliptical, and the outermost parts of the outer edges of all clamping components are on the same cylindrical surface. The cross-sections of the clamping cavity and the access sheath are both elliptical. The access sheath matches the size of the clamping cavity and can be embedded in the clamping cavity.

[0060] An access optical cable for FTTX, characterized in that: the plane passing through the central axis of the inner liner bisects the bridge body and coincides with the plane where the short axis of the clamping member is located.

[0061] An access optical cable for FTTX, characterized in that: adjacent clamping members are adjacent or have a slight gap.

[0062] Example 5: See Figure 9 and Figure 10 and refer to Figures 1 to 8 An access optical cable for FTTX is basically the same as any one of Examples 1 to 3 above. The difference is that: the plane passing through the central axis of the inner liner 11 bisects the bridge body 12 and coincides with the plane where the long axis of the access sheath 13 is located, and the other end of the bridge body 12 is connected to one long axis end of the access sheath 13.

[0063] For an access optical cable for FTTX as described above, the other long axis ends of all the access sheaths 13 are on the same first cylindrical surface C.

[0064] For an access optical cable for FTTX as described above, the plane where the long axis L of each access sheath 13 is located passes through the central axis of the inner liner 11 and bisects the bridge body 12.

[0065] In this example, the way that the long axis plane of the access sheath 13 passes through the plane where the central axis of the inner liner 11 is located is simply referred to as the vertical way, which makes the structure more compact. Since the short axis of the access sheath is generally shorter than the long axis, more access sheaths can be accommodated with the same diameter. Of course, the prerequisite is that the radius size must not be less than the sum of the long axis length of the access sheath, the radius of the inner liner, and the height of the bridge body; and when a larger optical cable size is not required or that is, not so many access sheaths are needed, it is better to adopt the way that the short axis plane of the access sheath 13 passes through the plane where the central axis of the inner liner 11 is located, that is, the horizontal way, which can save more materials and avoid waste according to actual use.

[0066] An access optical cable for FTTX as described in this application, characterized in that: the material of the central strengthening member 2 is steel wire, or aluminum wire, or copper wire, or glass fiber reinforced plastic, or aramid yarn, or steel strand, or aluminum strand.

[0067] An access optical cable for FTTX as described in this application, characterized in that: the material of the outer sheath 4 is plastic.

[0068] An access optical cable for FTTX as described in this application, characterized in that: the material of the inner liner 11 is plastic.

[0069] An access optical cable for FTTX as described in this application, characterized in that: the material of the bridge body 12 is plastic.

[0070] An access optical cable for FTTX described in this application is characterized in that the material of the access sheath 13 is plastic.

[0071] An access optical cable for FTTX described in this application is characterized in that the material of the conductor 31 is copper, aluminum, copper alloy or aluminum alloy.

[0072] An access optical cable for FTTX described in this application is characterized in that the material of the insulating layer 32 is plastic.

[0073] An access optical cable for FTTX described in this application is characterized in that the optical fiber 131 is a single-mode or multi-mode optical fiber in the prior art.

[0074] An access optical cable for FTTX described in this application is characterized in that the material of the reinforcing member 132 is steel wire, aluminum wire, copper wire, glass fiber reinforced plastic or aramid yarn.

[0075] An access optical cable for FTTX described in this application is characterized in that the material of the clamping member 14 is plastic.

[0076] In this application, the adjacent bridge bodies 12 and the adjacent access sheaths 13 clamp the power transmission component 3 therein, making the structure more stable and reliable. At the same time, during inspection or construction, the power transmission component 3 can be taken and placed by simply separating the access sheath 13 gently, so the efficiency is higher.

[0077] Of course, when there is a clamping member 14, the adjacent bridge bodies 12 and the adjacent clamping members 14 clamp the power transmission component 3 therein, making the structure more stable and reliable. At the same time, during inspection or construction, the power transmission component 3 can be taken and placed by simply separating the clamping member 14 gently, so the efficiency is higher.

[0078] This application can be used as an intelligent sensor or an intelligent sensing element; since it can transmit voice and images, it can also be used as a physical sensor, such as a voice sensor or an image sensor, preferably an image sensor, to transmit video signals and voice signals; since it transmits optical signals through the total reflection principle, it can also be used as a distance sensor; the optical fiber in this application itself is an optical waveguide, so it can be used as an optical waveguide, such as an array optical waveguide or a diffraction optical waveguide; this application can also be used in the field of optical computing, as part of optical computing, optical computing, optical network computing, and optical chip computing.

[0079] This application has the following main beneficial technical effects: the access sheath is convenient to take and place, occupies a small space, has a high space utilization rate, has a small external dimension, consumes less materials, and is flexible to use.

[0080] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as a limitation to the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An FTTX optical cable, comprising a cable core and an outer sheath (4), wherein the outer sheath is coated on the outside of the cable core, and wherein: The cable core is composed of an inner lining body (11), a plurality of bridge bodies (12), and a plurality of introduction sheaths (13); the introduction sheaths contain optical fibers (131) and two reinforcing members (132); the two reinforcing members are respectively located on both sides of the optical fibers; the optical fibers and the reinforcing members are distributed along the long axis of the introduction sheath; one end of the bridge body is connected to the outer surface of the inner lining body; the other end of the bridge body is connected to the surface of one end of the long axis or short axis of the introduction sheath; and a side cavity (130) is formed between adjacent bridge bodies.

2. The FTTX optical cable according to claim 1, characterized in that: The lining body (11), the plurality of bridge bodies (12), and the introduction sheath (13) are formed in one piece, forming an integrated structure.

3. An FTTX optical cable, comprising a cable core, an outer sheath, and a plurality of lead-in sheaths, wherein the outer sheath is coated on the outside of the cable core, and wherein: The cable core is composed of an inner lining body (11), a plurality of bridge bodies (12), and a plurality of clamping components (14); an optical fiber and two reinforcing components are arranged inside the introduction sheath; the two reinforcing components are respectively located on both sides of the optical fiber; the optical fiber and the reinforcing components are distributed along the long axis of the introduction sheath; one end of the bridge body is connected to the outer surface of the inner lining body; the other end of the bridge body is connected to the surface of one end of the short axis of the clamping component; a side cavity (130) is formed between adjacent bridge bodies; a clamping cavity (141) is arranged inside the clamping component; the outer end of the clamping component has an opening (142); and the introduction sheath is embedded in the clamping cavity.

4. The FTTX optical cable according to claim 3, characterized in that: The lining body (11), the plurality of bridge bodies (12), and the plurality of clamping components (14) are formed integrally, forming an integrated structure.

5. The FTTX optical cable according to any one of claims 1 to 4, characterized in that: The bridge bodies are symmetrically distributed on the outer surface of the lining body.

6. The FTTX optical cable according to claim 5, characterized in that: The cross section of the introduction sheath is oval.

7. The FTTX optical cable according to claim 1 or claim 2, characterized in that: Adjacent lead-in sheaths are either close together or have a gap.

8. The FTTX optical cable according to claim 7, characterized in that: When the other end of the bridge body is connected to the surface of one end of the short axis of the introduction sleeve, the plane passing through the central axis of the lining body divides the bridge body into two halves and coincides with the plane where the short axis of the introduction sleeve is located; when the other end of the bridge body is connected to the surface of one end of the long axis of the introduction sleeve, the plane passing through the central axis of the lining body divides the bridge body into two halves and coincides with the plane where the long axis of the introduction sleeve is located.

9. The FTTX optical cable according to any one of claims 1 to 4, characterized in that: It also has a plurality of power transmission components (3), which are located in the side cavity.

10. The FTTX optical cable according to any one of claims 1 to 4, characterized in that: A central reinforcement (2) is also provided, and the central reinforcement is located inside the lining body.

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