CN113674903A

CN113674903A - Built-in optical fiber coaxial cable

Info

Publication number: CN113674903A
Application number: CN202110769093.4A
Authority: CN
Inventors: 汤晓楠; 承滨
Original assignee: Shenyu Communication Technology Co Ltd
Current assignee: Shenyu Communication Technology Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-11-19
Anticipated expiration: 2041-07-07
Also published as: CN113674903B

Abstract

The invention discloses a built-in optical fiber coaxial cable which comprises a rubber outer sleeve, wherein a non-woven fabric layer is arranged in the middle position inside the rubber outer sleeve, a first insulating layer is arranged on the inner side of the non-woven fabric layer, an aramid fiber layer is arranged on the inner side of the first insulating layer, an aluminum foil layer is arranged on the inner side of the aramid fiber layer, and a second insulating layer is arranged on the inner side of the aluminum foil layer. According to the invention, through the matching use of the hollow inner conductor, the memory metal strip, the rubber sleeve and the soft plastic plate, one end of the optical fiber cable is fixedly connected with one end of the group of memory metal strips through the iron wire, the group of memory metal strips are mechanically pulled from the other end of the built-in optical fiber coaxial cable, the optical fiber cable is brought into the rubber sleeve by the memory metal strips to play a role of a traction rope, the optical fiber cable in the rubber sleeve is protected by the multilayer protective layer on the outer side of the hollow inner conductor, other cables and the like can also be brought into the rubber sleeve for matching use, and the application range of the cable is improved.

Description

Built-in optical fiber coaxial cable

Technical Field

The invention relates to the technical field of coaxial cables, in particular to a built-in optical fiber coaxial cable.

Background

The broadband access network is a broadband access network combining optical fibers and coaxial cables, replaces general cables with the optical fibers to serve as a backbone in a cable television network, and can provide a shared bandwidth of 30Mbps for high-speed Internet access, VOD, analog or digital cable television and digital video programs. The transmission medium from the head-end equipment room to the optical fiber nodes near the subscribers is optical fiber, and the transmission medium from the optical fiber nodes to the terminal equipment of the subscribers is an RG-62 electric cable.

The existing built-in optical fiber coaxial cable usually wraps the inner core of the cable directly through the rubber outer sleeve, so that the overall toughness is relatively common, the toughness of the whole cable cannot be further improved, and the pressure resistance of the cable is ensured; the existing built-in optical fiber coaxial cable cannot selectively replace an optical fiber cable or other media into the hollow inner conductor according to the requirement, so that the application range of the coaxial cable is reduced; meanwhile, the existing built-in optical fiber coaxial cable usually wraps the optical fiber cable in the rubber jacket directly, once a certain section of the whole cable is suddenly subjected to instant impact force, the optical fiber wire in the optical fiber cable is easily damaged, and the impact resistance of the whole built-in optical fiber coaxial cable cannot be further improved.

Disclosure of Invention

It is an object of the present invention to provide a built-in optical fiber coaxial cable to solve the above-mentioned problems associated with the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the coaxial cable with the built-in optical fiber comprises a rubber outer sleeve, a non-woven fabric layer is arranged in the middle of the inside of the rubber outer sleeve, and the inner side of the non-woven fabric layer is provided with a first insulating layer, the inner side of the first insulating layer is provided with an aramid fiber layer, an aluminum foil layer is arranged on the inner side of the aramid fiber layer, a second insulating layer is arranged on the inner side of the aluminum foil layer, and the inner side of the second insulating layer is provided with a hollow inner conductor, the inner side of the hollow inner conductor is provided with a rubber sleeve, the inner side of the rubber sleeve is uniformly provided with sliding grooves, and the inside of the sliding groove is provided with a memory metal strip, the inner side of the rubber sleeve is provided with an optical fiber cable, the inner side wall of the rubber sleeve is uniformly provided with a soft plastic plate which is matched with the optical fiber cable, three groups of wire grooves are symmetrically formed in two ends of the inner portion of the rubber outer sleeve, and stainless steel wires are arranged inside the four groups of wire grooves close to the rubber outer sleeve.

Preferably, five groups of sliding grooves are uniformly formed in the inner side of the rubber sleeve, five rows of soft plastic plates are uniformly arranged on the inner side of the rubber sleeve, and each row of soft plastic plates is located in the middle of two adjacent groups of sliding grooves.

Preferably, a glass fiber layer is arranged in the middle of the inside of the rubber outer sleeve, a fire-resistant mica tape is arranged on the inner side of the glass fiber layer, and the fire-resistant mica tape is positioned on the outer side of the non-woven fabric layer.

Preferably, arc-shaped through holes are symmetrically formed in two sides of the top of the rubber outer sleeve, and the arc-shaped through holes are communicated with the inside of the adjacent wire grooves.

Preferably, two groups of through grooves are symmetrically formed in positions, close to the glass fiber layer, of two sides in the rubber outer sleeve, the aperture of each through groove is smaller than that of each wire groove, and the cross section of the rubber outer sleeve is in an oval structure shape.

Preferably, the edge position outside the rubber outer sleeve is provided with a length scale mark, and one side of the length scale mark is provided with a length marking label.

Preferably, the flexible plastic plates are of arc structures, and the bending directions of all the flexible plastic plates are the same.

Preferably, the size of the memory metal strip is smaller than the size of the inner part of the sliding groove.

Compared with the prior art, the invention provides the built-in optical fiber coaxial cable, which has the following beneficial effects:

1. according to the invention, through the matched use of the rubber outer sleeve, the first insulating layer, the non-woven fabric layer, the second insulating layer, the rubber sleeve, the wire groove and the through groove, when the built-in optical fiber coaxial cable is subjected to pressure, the rubber outer sleeve can achieve a larger compression-resistant effect, the wire groove and the through groove can further improve the compression-resistant effect of the rubber outer sleeve, and part of rubber materials can be saved, and the first insulating layer, the non-woven fabric layer and the second insulating layer can achieve the effect of compression resistance again, so that the compression-resistant capability of the whole built-in optical fiber coaxial cable is improved.

2. The invention uses the matching of the optical fiber cable, the hollow inner conductor, the memory metal strip, the rubber sleeve, the sliding groove and the soft plastic plate, when the optical fiber cable is needed to be inserted into the hollow inner conductor for use, one end of the optical fiber cable can be fixedly connected with one end of a group of memory metal strips through an iron wire, then the group of memory metal strips are mechanically pulled from the other end of the built-in optical fiber coaxial cable, the optical fiber cable is brought into the rubber sleeve by the memory metal strips to play a role of a hauling rope, the optical fiber cable in the rubber sleeve is protected by the multi-layer protective layer outside the hollow inner conductor, other cables and the like can also be brought into the rubber sleeve for matching use, and in the daily use process of the built-in optical fiber coaxial cable, five groups of memory metal strips can also greatly improve the toughness and the deformation resistance of the whole built-in optical fiber coaxial cable, therefore, the stable and safe use of the optical fiber cable is ensured, and the application range of the cable is also improved.

3. According to the invention, through the matching use of the optical fiber cable, the memory metal strip, the rubber sleeve, the sliding groove and the soft plastic plate, in the process of drawing the optical fiber cable into the rubber sleeve, the soft plastic plate can play a role of guiding, and also can prevent the optical fiber cable from having a large gap with the inner wall of the rubber sleeve, so that the stability of the optical fiber cable in the rubber sleeve is improved, when the whole cable is suddenly impacted, the rubber sleeve firstly performs primary buffering, then the memory metal strip can also improve the shock resistance of the whole cable through the second-step buffering performed by the multilayer protective layer, and finally the soft plastic plate also deforms when the impact force impacts the outer side of the optical fiber cable, so that the final-step buffering is realized, and the shock resistance of the whole cable can be greatly improved through the multi-step buffering structure.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view of the glass fiber layer of the present invention with the inner side removed;

FIG. 4 is a disassembled cross-sectional view of the fiber optic cable of the present invention;

FIG. 5 is a cross-sectional view of the inside of the hollow inner conductor of the present invention;

FIG. 6 is a perspective view of the rubber bushing of the present invention;

FIG. 7 is an enlarged view taken at A of FIG. 4 according to the present invention.

In the figure: 1. a rubber jacket; 2. fire-resistant mica tapes; 3. an aluminum foil layer; 4. a fiber optic cable; 5. a hollow inner conductor; 6. a first insulating layer; 7. stainless steel wires; 8. arc perforation; 9. a non-woven fabric layer; 10. a second insulating layer; 11. a memory metal strip; 12. a rubber sleeve; 13. an aramid fiber layer; 14. a glass fiber layer; 15. a wire slot; 16. a through groove; 17. a sliding groove; 18. a flexible plastic sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the coaxial cable with the built-in optical fiber comprises a rubber outer sleeve 1, a non-woven fabric layer 9 is arranged at the middle position inside the rubber outer sleeve 1, a first insulating layer 6 is arranged on the inner side of the non-woven fabric layer 9, an aramid fiber layer 13 is arranged on the inner side of the first insulating layer 6, an aluminum foil layer 3 is arranged on the inner side of the aramid fiber layer 13, a second insulating layer 10 is arranged on the inner side of the aluminum foil layer 3, and the inner side of the second insulating layer 10 is provided with a hollow inner conductor 5, the inner side of the hollow inner conductor 5 is provided with a rubber sleeve 12, the inner side of the rubber sleeve 12 is uniformly provided with sliding grooves 17, and the inside of sliding tray 17 is provided with memory metal strip 11, and the inboard of rubber sleeve 12 is provided with optic fibre cable 4, evenly is provided with the soft plastic board 18 of mutually supporting with optic fibre cable 4 on the inside wall of rubber sleeve 12, and three groups of wire casings 15 have evenly been seted up to the both ends of the inside of rubber overcoat 1 symmetry, and all are provided with stainless steel wire 7 in the four groups of wire casings 15 that are close to rubber overcoat 1.

Furthermore, five groups of sliding grooves 17 are uniformly formed in the inner side of the rubber sleeve 12, five rows of soft plastic plates 18 are uniformly arranged in the inner side of the rubber sleeve 12, and each row of soft plastic plates 18 is located in the middle of two adjacent groups of sliding grooves 17, so that the deformation resistance of the rubber sleeve 12 can be improved, the position of the optical fiber cable 4 can be limited by the soft plastic plates 18, and the optical fiber cable 4 is prevented from shaking greatly in the rubber sleeve 12 to influence the normal use of the optical fiber cable 4.

Further, a glass fiber layer 14 is arranged in the middle of the inside of the rubber outer sleeve 1, a fire-resistant mica tape 2 is arranged on the inner side of the glass fiber layer 14, the fire-resistant mica tape 2 is located on the outer side of the non-woven fabric layer 9, when the cable is burnt by fire, the glass fiber layer 14 is melted to form a firm protective armor for protecting the hollow inner conductor 5 and the optical fiber cable 4 inside the glass fiber layer 14, and the fire-resistant mica tape 2 on the inner side of the glass fiber layer 14 can further prevent the fire from damaging the inner components of the fire-resistant mica tape 2.

Further, arc perforation 8 has been seted up to the bilateral symmetry at 1 top of rubber overcoat, and the inside intercommunication of arc perforation 8 and adjacent a set of wire casing 15 passes arc perforation 8 with fixed iron wire, and fix the cable on certain pipeline or stake with fixed iron wire, improve the steadiness after the cable is put.

Furthermore, two groups of through grooves 16 are symmetrically formed in positions, close to the glass fiber layer 14, of two sides in the rubber outer sleeve 1, the aperture of each through groove 16 is smaller than that of the wire groove 15, and the cross section of the rubber outer sleeve 1 is in an oval structure shape, so that the compression resistance of the rubber outer sleeve 1 is improved.

Further, the edge position outside rubber coat 1 is provided with the length scale mark, and one side of length scale mark is provided with the length and marks the label, and the user of being convenient for cuts this cable into required length as required.

Further, the flexible plastic sheets 18 have an arc-shaped structure, and the bending directions of all the flexible plastic sheets 18 are the same, which helps to reduce the gap between the optical fiber cable 4 and the inner wall of the rubber bushing 12.

Further, the size of the memory metal strip 11 is smaller than the size of the inside of the sliding groove 17, so that when a user pulls the group of memory metal strips 11 outwards, the memory metal strips 11 can move inside the sliding groove 17 more easily.

In embodiment 1, as shown in fig. 1 to 7, when the optical fiber cable 4 needs to be pulled into the rubber sleeve 12, one end of the optical fiber cable 4 may be fixedly connected to one end of a group of memory metal strips 11 through an iron wire, and then the group of memory metal strips 11 is mechanically pulled from the other end of the embedded optical fiber coaxial cable, so that the optical fiber cable 4 is brought into the rubber sleeve 12 by the memory metal strips 11 to function as a pulling rope, and the optical fiber cable 4 inside the rubber sleeve 12 is protected by a multi-layer protection layer outside the hollow inner conductor 5, or other cables and the like may be brought into the rubber sleeve 12 for use in a matching manner.

Example 2, as shown in fig. 7, when the cable is burned, the glass fiber layer 14 melts to form a firm protective armor to protect the hollow inner conductor 5 and the optical fiber cable 4 inside the glass fiber layer 14, and the fire-resistant mica tape 2 inside the glass fiber layer 14 can further avoid the damage of fire to the internal components of the fire-resistant mica tape 2, when the two ends of the cable are pulled up and suspended, the non-woven fabric layer 9 and the aramid fiber layer 13 can improve the anti-pulling capability of the whole cable, and other smaller lines can be pulled into the slot 15 by using the stainless steel wire 7, so that the line passes through the slot 15, the line is protected by using the rubber jacket 1, and the aluminum foil layer 3 can reduce the influence of external signals on the cable.

The working principle is as follows: when the optical fiber cable 4 needs to be inserted into the hollow inner conductor 5 for use, one end of the optical fiber cable 4 can be fixedly connected with one end of a group of memory metal strips 11 through an iron wire, then the group of memory metal strips 11 are mechanically pulled from the other end of the built-in optical fiber coaxial cable, the optical fiber cable 4 is brought into the rubber sleeve 12 through the memory metal strips 11 to play a role of a pulling rope, the optical fiber cable in the rubber sleeve 12 is protected through a plurality of layers of protective layers on the outer side of the hollow inner conductor 5, other cables and the like can also be brought into the rubber sleeve 12 for matching use, and in the daily use process of the built-in optical fiber coaxial cable, five groups of memory metal strips 11 can also greatly improve the toughness and the deformation resistance of the whole built-in optical fiber coaxial cable, so as to be beneficial to ensuring the stable and safe use of the optical fiber cable 4, and in the process of pulling the optical fiber cable 4 into the rubber sleeve 12, the soft plastic board 18 can play the effect of direction, also can let the optic fibre cable can not have very big space with between the inner wall of rubber sleeve 12, help improving the stability of optic fibre cable in rubber sleeve 12 inside, and when whole cable received impact suddenly, carry out preliminary buffering by rubber overcoat 1 earlier, the second step buffering through multilayer protective layer is done afterwards, memory metal strip 11 also can improve the shock resistance of whole cable, last soft plastic board 18 also can take place deformation when colliding to the outside of optic fibre cable 4 because of the impact force, thereby play last step buffering, through multistep buffer structure, can greatly improve the shock resistance of whole cable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Built-in optic fibre coaxial cable, including rubber overcoat (1), its characterized in that: the rubber jacket is characterized in that a non-woven fabric layer (9) is arranged at the middle position inside the rubber jacket (1), a first insulation layer (6) is arranged on the inner side of the non-woven fabric layer (9), an aramid fiber layer (13) is arranged on the inner side of the first insulation layer (6), an aluminum foil layer (3) is arranged on the inner side of the aramid fiber layer (13), a second insulation layer (10) is arranged on the inner side of the aluminum foil layer (3), a hollow inner conductor (5) is arranged on the inner side of the second insulation layer (10), a rubber sleeve (12) is arranged on the inner side of the hollow inner conductor (5), sliding grooves (17) are uniformly formed in the inner side of the rubber sleeve (12), memory metal strips (11) are arranged inside the sliding grooves (17), an optical fiber cable (4) is arranged on the inner side of the rubber sleeve (12), a soft plastic plate (18) matched with the optical fiber cable (4) is uniformly arranged on the inner side wall of the rubber sleeve (12), three groups of wire grooves (15) are evenly and symmetrically arranged at two ends inside the rubber outer sleeve (1), and stainless steel wires (7) are arranged inside four groups of wire grooves (15) close to the rubber outer sleeve (1).

2. The fiber-optic coaxial builtin cable of claim 1, wherein: five groups of sliding grooves (17) are uniformly formed in the inner side of the rubber sleeve (12), five rows of soft plastic plates (18) are uniformly arranged in the inner side of the rubber sleeve (12), and each row of soft plastic plates (18) is located in the middle of two adjacent groups of sliding grooves (17).

3. The fiber-optic coaxial builtin cable of claim 1, wherein: the rubber sleeve is characterized in that a glass fiber layer (14) is arranged in the middle of the inside of the rubber sleeve (1), a fire-resistant mica tape (2) is arranged on the inner side of the glass fiber layer (14), and the fire-resistant mica tape (2) is located on the outer side of the non-woven fabric layer (9).

4. The fiber-optic coaxial builtin cable of claim 1, wherein: arc perforation (8) have been seted up to the bilateral symmetry at rubber overcoat (1) top, and arc perforation (8) and the inside intercommunication of an adjacent group wire casing (15).

5. The fiber-optic coaxial builtin cable of claim 1, wherein: two sets of logical grooves (16) have been seted up to the symmetry of the position department that the inside both sides of rubber overcoat (1) are close to glass fiber layer (14), and the aperture that leads to groove (16) is less than the aperture of wire casing (15), the transversal oval structure form of personally submitting of rubber overcoat (1).

6. The fiber-optic coaxial builtin cable of claim 1, wherein: the rubber sleeve is characterized in that length scale marks are arranged at the edge positions of the outer side of the rubber sleeve (1), and a length marking label is arranged on one side of each length scale mark.

7. The fiber-optic coaxial builtin cable of claim 1, wherein: the soft plastic plates (18) are of arc structures, and the bending directions of all the soft plastic plates (18) are the same.

8. The fiber-optic coaxial builtin cable of claim 1, wherein: the size of the memory metal strip (11) is smaller than the size of the inside of the sliding groove (17) firstly.