CN203616514U - In-wall direct-buried round lead-in optical cable - Google Patents
In-wall direct-buried round lead-in optical cable Download PDFInfo
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- CN203616514U CN203616514U CN201320682067.9U CN201320682067U CN203616514U CN 203616514 U CN203616514 U CN 203616514U CN 201320682067 U CN201320682067 U CN 201320682067U CN 203616514 U CN203616514 U CN 203616514U
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- optical cable
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- optical fiber
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Abstract
The utility model discloses an in-wall direct-buried round lead-in optical cable including an optical fiber. The optical fiber is wrapped with a tightly-covering coating layer, a waterproof aramid fiber layer, an anti-flaming sleeve, a steel tape armoring layer and an anti-flaming outer sheath from inside out successively. A G.657 single mode fiber that is high in tensile strength and easy to bend and can absorb water is adopted in the optical fiber unit. At the same time, the optical cable is protected against damages caused by external elements comprehensively by adopting the anti-flaming jacket, the anti-flaming PBT sleeve and the winkled steel tape armoring. The in-wall direct-buried round lead-in optical cable can be buried in a wall easily in a building process or after a building is built. The in-wall direct-buried round lead-in optical cable is simple in integral structure, good in flexibility, small in outer diameter and can be laid in corners of the wall easily. Besides, the in-wall direct-buried round lead-in optical cable is mature in production technique, flexible in laying method and good in practical applicability.
Description
Technical field
The utility model belongs to indoor communications optical cable manufacturing technology field, relate to a kind of can be at the circular leading in cable of building interior direct-burried.
Background technology
At present, the indoor optical cable of Access Network is mainly butterfly optical cable and tight sleeve optic cable is main, its basic structure is as shown in Fig. 1 (a), butterfly optical cable cross section is the low sheath 4 of a butterfly structure, its middle part is provided with tearing port 102, the inner side, two ends up and down of butterfly structure is provided with the reinforcement 101 running through, and the middle part of tearing port 102 correspondences is provided with the optical fiber 103 running through.Shown in Fig. 1 (b), tight sleeve optic cable cross section is two set with each other cylindrical, slightly different with butterfly optical cable, is many at the optical fiber running through 103 at corresponding tearing port 102 middle parts.When current indoor optical cable connects up in built building, adopt open-wire line system of laying, if adopt the indoor layout effect of the leading in cable impact entirety of said structure more.
Utility model content
The purpose of this utility model is to provide a kind of circular leading in cable of direct-burried within the walls, has solved problems of the prior art.
The purpose of this utility model realizes by following technical proposals.
A circular leading in cable for direct-burried, comprises optical fiber within the walls, and described outer fiber is by being coated with successively tight cover coating, water resistance aramid fiber layer, fire retardant sleeve, steel-tape armouring layer and fire-retardant oversheath outside interior.
Further, described optical fiber adopts G.657 single-mode fiber.
Further, described fire retardant sleeve adopts PBT sleeve pipe.
Further, described steel-tape armouring layer adopts wrinkle steel-tape armouring layer.
Feature of the present utility model is:
1, current indoor optical cable is generally used in built building, and the open-wire lines that adopt, affect overall aesthetic, and existing indoor optical cable reinforcement have certain toughness more in the wiring process of whole building, make optical cable bending radius little, and optical cable volume is large.FTTH newly developed is with optical fiber cable for direct burial external diameter is little within the walls, and fiber unit adopts G.657 single-mode fiber (bending loss insensitive single-mode fiber), and aramid fiber reinforcement has extremely strong tensile strength, flexible water suction; Adopt flame-retardant sheath material, flame-retardant PBT sleeve pipe and wrinkle steel-tape armouring, omnibearing protection optical cable is not subject to the damage of extraneous factor simultaneously; Can be in the process of building building or building lay easily direct-burried after building up and enter body of wall inside.
2, large, flexible poor, the difficult wiring of current Access Network inside cable external diameter, and affect the aesthetic of building entirety.Optical fiber cable for direct burial within the walls for FTTH newly developed, one-piece construction is simple, flexible, external diameter is little, can easily lay in body of wall corner.And production technology maturation, system of laying are flexible, have good practicality.
3, optical fiber cable for direct burial within the walls newly developed, aramid fiber as fill, block water and reinforcement in the space of sleeve pipe, stretch under the condition of performance not affecting optical cable tensile, cable outer diameter dwindles greatly, and the raw-material use amount of oversheath is obviously reduced; And the body of wall volume of digging in laid processes or taking is little.
The beneficial effects of the utility model are,
(1) open up the new direction that fiber cable laying field is developed, promoted the diversity development of optical cable industry.
(2) improve the flexibility of inside cable, can tackle the wiring within the walls under varying environment.
(3) strengthen inside cable physical strength, reduced the external diameter of optical cable.
(4) alleviate the weight of inside cable self, made system of laying versatile and flexible.
(5) resisted the infringement of body of wall wet environment to indoor optical-fibre optical cable.
Accompanying drawing explanation
Fig. 1 (a) is indoor butterfly leading in cable structural representation;
Fig. 1 (b) is indoor tight cover leading in cable structural representation;
In Fig. 1,101. reinforcements, 102. tearing ports, 103. low sheath, 4. optical fiber.
Fig. 2 is one circular leading in cable structural representation for direct-burried within the walls.
In Fig. 2,1. fire-retardant oversheath, 2. steel-tape armouring layer, 3. fire retardant sleeve, 4. optical fiber, 5. water resistance aramid fiber layer, 6. tight cover coating.
Fig. 3 is the technical process figure of the circular leading in cable of direct-burried within the walls.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention or utility model are elaborated.
A kind of circular leading in cable structure of direct-burried within the walls as shown in Figure 2, comprises optical fiber 4, and optical fiber 4 outsides are by being coated with successively tight cover coating 6, water resistance aramid fiber layer 5, fire retardant sleeve 3, steel-tape armouring layer 2 and fire-retardant oversheath 1 outside interior.
Wherein, optical fiber 4 adopts G.657 single-mode fiber.Fire retardant sleeve 3 adopts PBT sleeve pipe, and steel-tape armouring layer 2 adopts wrinkle steel-tape armouring layer.
Tightly overlap coating 6 at optical fiber 4 outer cladding one decks and form tight tube structure, add water resistance aramid fiber 5 outward at tight tube structure, then extrude one deck PBT sleeve pipe 3, again at the outer vertical bag one deck wrinkle steel-tape armouring layer 2 of PBT sleeve pipe 3, finally, at the fire-retardant oversheath 1 of wrinkle steel-tape armouring layer 2 outer cladding one deck, make this circular leading in cable of direct-burried within the walls.
FTTH, with compared with the inside cable of optical fiber cable for direct burial within the walls and other structure, has better practicality and economy:
(1) adopt aramid fiber as reinforcement, reduced on the one hand the deadweight of optical cable, reduced cable outer diameter, there is hygroscopic effect simultaneously; Keeping, under the prerequisite of original tensile property, having increased the flexibility of optical cable on the other hand.
(2) adopt G.657 single-mode fiber, guaranteed the performance of optical cable normal work in body of wall complex environment.
(3) due to this structure, to have external diameter little, soft, therefore can in different system of layings and different environment, use.
(4) little conductor assembly outer diameter, has reduced the use amount of jacket material; Aramid yarn and steel band, improved optical cable and resisted the moist ability of encroaching on of body of wall.
Concrete scheme: FTTH is illustrated in fig. 3 shown below with the technical process figure of optical fiber cable for direct burial within the walls: after PBT sleeve pipe 3 radially being overlapped after finished product optical fiber is tightly overlapped again and moulding, the additional sheath of cable core, must get product after testing afterwards.
The foregoing is only a kind of embodiment of the present utility model, it not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model instructions, is claim of the present utility model and contains.
Claims (4)
1. the circular leading in cable of direct-burried within the walls, comprise optical fiber (4), it is characterized in that, described optical fiber (4) outside is by being coated with successively tight cover coating (6), water resistance aramid fiber layer (5), fire retardant sleeve (3), steel-tape armouring layer (2) and fire-retardant oversheath (1) outside interior.
2. the circular leading in cable of direct-burried within the walls according to claim 1, is characterized in that, described optical fiber (4) adopts G.657 single-mode fiber.
3. the circular leading in cable of direct-burried within the walls according to claim 1, is characterized in that, described fire retardant sleeve (3) adopts PBT sleeve pipe.
4. the circular leading in cable of direct-burried within the walls according to claim 1, is characterized in that, described steel-tape armouring layer (2) adopts wrinkle steel-tape armouring layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682067.9U CN203616514U (en) | 2013-10-30 | 2013-10-30 | In-wall direct-buried round lead-in optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682067.9U CN203616514U (en) | 2013-10-30 | 2013-10-30 | In-wall direct-buried round lead-in optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203616514U true CN203616514U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320682067.9U Expired - Fee Related CN203616514U (en) | 2013-10-30 | 2013-10-30 | In-wall direct-buried round lead-in optical cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN203616514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204131A (en) * | 2015-11-03 | 2015-12-30 | 江苏亨通光电股份有限公司 | Manufacturing method of central tube FTTH enhanced type leading-in optical cable and optical cable |
-
2013
- 2013-10-30 CN CN201320682067.9U patent/CN203616514U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204131A (en) * | 2015-11-03 | 2015-12-30 | 江苏亨通光电股份有限公司 | Manufacturing method of central tube FTTH enhanced type leading-in optical cable and optical cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20161030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |