CN110333574B - Optical fiber connector capable of being installed on site - Google Patents
Optical fiber connector capable of being installed on site Download PDFInfo
- Publication number
- CN110333574B CN110333574B CN201910482029.0A CN201910482029A CN110333574B CN 110333574 B CN110333574 B CN 110333574B CN 201910482029 A CN201910482029 A CN 201910482029A CN 110333574 B CN110333574 B CN 110333574B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- field optical
- sheath
- prefabricated
- outer housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 102
- 210000001503 joint Anatomy 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 13
- 210000000078 claw Anatomy 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000003908 quality control method Methods 0.000 abstract description 2
- 239000000306 component Substances 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 230000035515 penetration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/385—Accessories for testing or observation of connectors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
- G02B6/387—Connector plugs comprising two complementary members, e.g. shells, caps, covers, locked together
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The quick end part comprises a prefabricated optical fiber part, a field optical fiber part butted with the prefabricated optical fiber part, and a butt joint pipe sleeved outside the prefabricated optical fiber part and the field optical fiber part, wherein the prefabricated optical fiber part comprises a first lock pin and a prefabricated optical fiber pre-buried in the first lock pin, and the field optical fiber part comprises a second lock pin used for connecting the field optical fiber and butted with the first lock pin; the outer housing has at least one interior cavity for receiving the rapid prototyping component, at least one passageway for field optical fiber to pass through to connect with the field optical fiber component. When the optical fiber connector is used on site, the prefabricated optical fiber and the on-site optical fiber are in butt joint by adopting the high-precision ferrule, so that the problem that the assembly process is difficult to check in the conventional V-shaped groove scheme is avoided, and the quality control degree of the production process is improved.
Description
Technical Field
The invention belongs to the technical field of connectors, and particularly relates to an optical fiber connector capable of being installed on site.
Background
With the rapid development of optical fiber communication technology, PON technology has become the most dominant solution for fiber to the home worldwide. With the gradual commercialization of 5G technology, deployment of micro base stations will be more and more, and uncertainty of station building positions will lead to uncertainty of optical cable lengths and exchange periods of prefabricated optical fiber plugs, which brings difficulty to field wiring. Therefore, the application of the optical fiber connector for on-site rapid construction can greatly reduce wiring difficulty and improve on-site construction efficiency.
At present, in the last kilometer of optical fiber access installation construction, an optical fiber fusion welding technology and an optical fiber rapid end forming technology are mainstream schemes. In the rapid fiber termination technology, there are common through-type and pre-buried type. The through type rapid end forming assembly is not stable enough in performance due to the limitation of the prior art, and cannot meet the requirement of on-site rapid construction of optical fibers. Referring to fig. 1, a conventional embedded type rapid end forming assembly is disclosed in patent CN103502861a, a section of optical fiber is embedded in an inner hole 62 of a ferrule 61, one end of the optical fiber and the ferrule are ground and polished to form an end face abutting against a normal connector, the other end of the optical fiber is exposed for a certain length and is ensured to be flush with the end face, the optical fiber with the exposed end is installed in a V groove 69a, a corresponding pressing block 66 is arranged above the V groove to press the embedded optical fiber and the field operation optical fiber, and a gap between the two sections of optical fibers is filled with matching paste. The one end of pre-buried optic fibre exposes in the quick end subassembly of aforementioned mode is outside the lock pin, and damage such as break, terminal surface pollution, terminal surface fall piece take place easily in the production process, causes the product to scrap to exposing end optic fibre and need using mechanical cutting mode to cut off, but the inspection degree is not high in the assembly process, also can cause the product performance unstable, and V groove precision requirement is high simultaneously, makes the difficulty, causes the size to exceed standard easily during batch production, leads to the product performance unstable, can't satisfy the requirement of on-the-spot batch installation.
Disclosure of Invention
The invention aims to provide an optical fiber connector capable of being installed on site, which meets the requirement of quick construction of an optical fiber on site.
The aim of the invention is realized by adopting the following technical scheme. The invention provides an optical fiber connector capable of being installed on site, which comprises an outer shell and a rapid end part arranged in the outer shell, wherein the rapid end part comprises a prefabricated optical fiber part, a site optical fiber part butted with the prefabricated optical fiber part, and a butt joint pipe sleeved outside the prefabricated optical fiber part and the site optical fiber part, the prefabricated optical fiber part comprises a first lock pin and a prefabricated optical fiber pre-buried in the first lock pin, and the site optical fiber part comprises a second lock pin used for connecting the site optical fiber and butted with the first lock pin; the outer housing has at least one interior cavity for receiving the rapid prototyping component, at least one passageway for field optical fiber to pass through to connect with the field optical fiber component.
Furthermore, the tail part of the outer shell is provided with an open slot or an open hole which is convenient for the field optical fiber to penetrate, and the open slot or the open hole and the outer shell are of an integral structure or a split structure.
Further, the tail part of the outer shell is provided with a tooth-shaped structure for clamping the optical cable of the field optical fiber, and the tooth-shaped structure and the outer shell are of an integral structure or a split structure.
Further, the optical fiber connector also comprises a sheath detachably assembled on the outer shell body through a locking mechanism for clamping the optical cable of the field optical fiber, and the locking mechanism comprises a locking piece and a matching piece connected with the locking piece.
Further, the locking mechanism is an elastic locking mechanism, the locking piece is a spring claw arranged on the outer shell, the matching piece is a limiting groove arranged on the sheath, and the spring claw is spring into the limiting groove in a direct-pushing locking mode to assemble the sheath on the outer shell.
Further, the locking mechanism is a thread locking mechanism, the locking piece is an external thread arranged on the outer shell, the matching piece is an internal thread arranged on the sheath, and the sheath is assembled on the outer shell in a rotary locking mode.
Furthermore, the lock piece is directly driven to act when the sheath and the outer shell are unlocked, so that the lock piece is disconnected with the matching piece.
Further, the optical fiber connector further comprises a force application member which is arranged on the outer shell or the sheath and connected with the lock member, and the force application member is driven to act when the sheath and the outer shell are unlocked so as to disconnect the lock member from the matching member.
Further, the outer housing has a viewing aperture therein for viewing whether the field optical fiber is assembled in place.
Further, the rapid prototyping component also comprises a pressing mechanism for pressing the butted prefabricated optical fiber or the field optical fiber.
The field-installable fiber optic connector of the present invention has the following features:
1. The prefabricated optical fiber and the field optical fiber are in butt joint by adopting the high-precision core insert, so that the problem that the assembly process is difficult to check in the conventional V-shaped groove scheme is avoided, and the quality control degree of the production process is improved;
2. The outer shell is provided with a V-shaped open slot, and the tail part of the outer shell is provided with a tooth-shaped structure, so that the optical cable of the field optical fiber can be conveniently penetrated and enough holding force can be provided between the optical cable of the field optical fiber and the connector;
3. a locking mechanism is provided between the sheath and the outer shell, so that the optical cable is clamped and fixed after being preassembled in place.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention given in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a prior art pre-buried quick end assembly.
Fig. 2 is a view of the use of one embodiment of a field-installable fiber optic connector of the present invention.
Fig. 3 is an exploded view of fig. 2.
Fig. 4 is a schematic view of a rapid prototyping assembly in this embodiment.
Fig. 5 is an exploded view of fig. 4.
Fig. 6 is a schematic diagram illustrating the cooperation between the integrated rear housing and the sheath in the present embodiment.
[ Main element symbols description ]
101: Front case 102: rear housing 1021: boss
1022: Mating sleeve 1023: lead portion 1024: open groove
1025: Tooth form structure 2: rapid prototyping component 201: prefabricated optical fiber component
2011: First ferrule 2012: square flange 202: field optical fiber component
2021: The second ferrule 2022: circular flange 203: butt joint pipe
204: Support sleeve 2041: and a blocking edge 3: spring
4: Sheath 501: card slot 502: clamping block
601: Guide key groove 602: guide key 7: optical cable
801: Spring claw 802: limiting groove
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings and the preferred embodiments. In this embodiment, the position of the prefabricated optical fiber component is defined as "front", and the position of the optical cable is defined as "rear".
Referring to FIG. 2, an embodiment of a field-installable fiber optic connector is shown. The optical fiber connector in this embodiment includes a front housing 101, a rapid prototyping end piece 2, a spring 3, an integrated rear housing 102, and a sheath 4.
Referring to fig. 3, the front housing 101 and the integrated rear housing 102 are assembled by a clamping groove and clamping block structure, which includes a clamping groove 501 disposed on the front housing and a clamping block 502 disposed on the integrated rear housing. The integrated rear housing 102 is provided with a boss 1021 for abutting with the tail end of the front housing for positioning, a matching sleeve 1022 connected with the boss and formed by extending forwards, and a lead part 1023 connected with the boss and formed by extending backwards, wherein a clamping block 502 is arranged on the matching sleeve, a guide key 602 matched with a guide key groove 601 arranged at the tail end of the front housing is arranged on the boss 1021, and the clamping block can be aligned and clamped into the clamping groove through the matching of the guide key and the guide key groove. The matching sleeve 1022 is an axially hollow component, and cooperates with the front housing 101 to form an inner cavity for accommodating the rapid prototyping assembly 2.
Referring to fig. 4 and 5, the rapid prototyping component 2 is a core component of the present embodiment, and is different from a conventional V-groove alignment mode, and the component uses an integral embedded contact pin component, specifically includes a prefabricated optical fiber component 201, a field optical fiber component 202, and a butt joint tube 203, where the prefabricated optical fiber component 201 includes a high-precision first ferrule 2011, and a prefabricated optical fiber embedded in the first ferrule; the field optical fiber component 202 includes a high-precision second ferrule 2021 for coupling to the field optical fiber, the second ferrule being centered in abutment with the first ferrule while filling between the preformed optical fiber and the field optical fiber with a matching paste at the time of field construction to eliminate the effect of the air gap; the butt joint pipe 203 is sleeved outside the first ferrule 2011 and the second ferrule 2021, and radial accuracy is ensured when the first ferrule and the second ferrule are butted.
In order to place the rapid prototyping component in the inner cavity formed by the integrated rear housing and the front housing, a square flange 2012 is arranged on the first ferrule 2011 in the embodiment, and the inner hole of the front housing 101 is provided with a square hole section in guiding sliding fit with the square flange 2012; the second ferrule 2021 is provided with a circular flange 2022, and an inner hole of the matching sleeve 1022 of the integrated rear housing is provided with a spring 3 abutting against the tail end of the circular flange 2022, so that necessary spring force is provided for the rapid prototyping component through the front housing, the integrated rear housing and the spring to ensure end face pressure between the two ferrules. In this embodiment, the rapid prototyping component 2 further includes a support sleeve 204 sleeved outside the butt joint pipe, the support sleeve 204 has a blocking edge 2041 for abutting and positioning with the square flange 2012 to limit the depth of the first ferrule inserted into the butt joint pipe, and the tail end of the support sleeve 204 is positioned with the front end of the circular flange 2022 by conical surface matching to limit the depth of the second ferrule inserted into the butt joint pipe.
In this embodiment, the butt-joint tube 203 is an open sleeve with a C-shaped cross section, and may be a closed sleeve or other types of special-shaped sleeves.
In this embodiment, the docking tube 203 and the supporting sleeve 204 are in a split structure, and may be made into an integral structure.
Referring to fig. 3, the lead portion 1023 of the integrated rear housing has an open slot 1024, and the cross section of the open slot 1024 is perpendicular to the axis of the rear housing (or the direction in which the field optical fiber is inserted into the rear housing) so that it opens toward the side of the rear housing, facilitating the penetration of the field optical fiber. The tail of the lead 1023 is provided with a tooth-like structure 1025 comprising two rows of teeth arranged vertically and extending in the direction of the field optical fiber insertion rear housing to clamp the cable 7 when the field optical fiber is inserted into the rear housing, providing a pre-clamping force for the cable. The present embodiment provides a channel for the field optical fiber to pass through the integrated rear housing and connect with the field optical fiber component of the rapid prototyping component via the intercommunicated open slot 1024 and tooth form structure 1025.
In this embodiment, the rear housing adopts an open slot, and may be an open hole penetrating the rear housing. The open slot 1024 is a V-shaped slot, although other shapes are possible.
In this embodiment, the V-shaped groove, the tooth-shaped structure and the rear housing are formed as an integral structure, and the three may be formed as separate structures.
Referring to fig. 6, the sheath 4 and the integrated rear housing 102 are detachably assembled by a locking mechanism, the locking mechanism includes a spring claw 801 disposed on the lead portion and a limit groove 802 disposed on the sheath, and a step is used to position a boss of the integrated rear housing and a front end of the sheath to ensure that the spring claw can be aligned to spring into the limit groove, so as to ensure that the rear housing, the sheath and the optical cable are integrated. The sheath 4 is arranged on the integrated rear shell from back to front and covers the lead part by adopting the structure, so that the field optical fiber is prevented from being exposed, and the optical cable 7 is pressed at the same time, thereby providing tensile resistance for the optical cable.
In this embodiment, the locking mechanism adopts an elastic locking mechanism composed of a spring claw and a limiting groove, the sheath is assembled on the integrated rear shell in a direct-pushing locking manner, and other types of locking mechanisms can be adopted, such as a thread locking mechanism composed of an external thread on the rear shell and an internal thread on the sheath, and the sheath is assembled on the integrated rear shell in a rotating locking manner.
In this embodiment, when the sheath and the integrated rear housing are unlocked, the finger directly presses the spring claw to separate from the limiting groove, and of course, a force application member (such as a push-pull rod and a pull ring) connected with the spring claw can be installed on the integrated rear housing or the sheath as required, and when the sheath and the integrated rear housing are unlocked, the spring claw is separated from the limiting groove by driving the force application member to act, so that the separation of the sheath and the rear housing is realized.
When the optical fiber connector of the embodiment is used on site, an optical fiber manufactured on site sequentially passes through the sheath and the integrated rear shell and is connected with the second ferrule of the optical fiber component on site, the first ferrule of the prefabricated optical fiber component and the second ferrule of the optical fiber component on site are respectively inserted into the butt joint pipe from two sides along opposite directions to realize centering, the quick end part and the spring are installed in a cavity formed by the front shell and the integrated rear shell together, the sheath is pushed from back to front, the sheath compresses an optical cable, and the tail of the integrated rear shell is further extruded, so that the optical cable is ensured to be clamped reliably.
In this embodiment, the front housing and the integrated rear housing together form an outer housing, and the outer housing has an inner cavity for placing the rapid prototyping end part and a channel for connecting the rapid prototyping end part by field optical fiber penetration, and of course, in other embodiments of the present invention: other types of outer housings may be employed that include multiple lumens for rapid end piece placement, multiple channels for field fiber penetration; at least one observation hole can be arranged on the outer shell according to the requirement, so that whether the field optical fiber is assembled in place or not can be checked conveniently; and the outer housing may also be provided with a pressing mechanism for pressing the butted prefabricated optical fiber or the field optical fiber as needed.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present invention will fall within the scope of the technical principles of the present invention, as will be apparent to those skilled in the art without departing from the scope of the technical principles of the present invention.
Claims (8)
1. The quick end part comprises a prefabricated optical fiber part, a field optical fiber part butted with the prefabricated optical fiber part, a butt joint pipe sleeved outside the prefabricated optical fiber part and the field optical fiber part, and a support sleeve sleeved outside the butt joint pipe, wherein the prefabricated optical fiber part comprises a first lock pin and a prefabricated optical fiber pre-buried in the first lock pin, and the field optical fiber part comprises a second lock pin used for connecting a field optical fiber and butted with the first lock pin; one end of the supporting sleeve is provided with a blocking edge which is in butt joint with a first flange arranged on the first inserting core to limit the depth of the first inserting core inserted into the butt joint pipe, and the other end of the supporting sleeve is in conical surface fit with a second flange arranged on the second inserting core to limit the depth of the second inserting core inserted into the butt joint pipe; the outer shell is internally provided with at least one inner cavity for placing a rapid prototyping component and at least one channel for penetrating a field optical fiber into the inner cavity to be connected with the field optical fiber component; the tail part of the outer shell is provided with an open slot which is convenient for the field optical fiber to penetrate into the channel, the opening of the open slot faces to the side part of the outer shell, and the tail part of the outer shell is also provided with a tooth-shaped structure for clamping an optical cable of the field optical fiber; the sheath is assembled on the outer shell in a direct-pushing locking mode and simultaneously compresses the optical cable in the channel.
2. The fiber optic connector of claim 1, wherein the open slot is of unitary or split construction with the outer housing.
3. The fiber optic connector of claim 1, wherein the tooth structure is of unitary or split construction with the outer housing.
4. The optical fiber connector of claim 1, wherein the sheath is assembled on the outer housing through an elastic locking mechanism, the locking member is a spring claw arranged on the outer housing, the matching member is a limit groove arranged on the sheath, the spring claw is spring into the limit groove through a direct pushing locking mode, and the sheath is assembled on the outer housing.
5. The fiber optic connector of claim 4, wherein the lock is directly actuated to disconnect from the mating member when the jacket and the outer housing are unlocked.
6. The optical fiber connector according to claim 4, further comprising a force applying member mounted on the outer housing or the sheath and connected to the lock member, wherein the force applying member is actuated to disconnect the lock member from the mating member when the sheath and the outer housing are unlocked.
7. The fiber optic connector of claim 1, wherein the outer housing has a viewing aperture therein for viewing whether the field optical fiber is assembled in place.
8. The fiber optic connector of claim 1, wherein the rapid prototyping component further comprises a compression mechanism for compressing a butted preform or field optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482029.0A CN110333574B (en) | 2019-06-04 | 2019-06-04 | Optical fiber connector capable of being installed on site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482029.0A CN110333574B (en) | 2019-06-04 | 2019-06-04 | Optical fiber connector capable of being installed on site |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110333574A CN110333574A (en) | 2019-10-15 |
| CN110333574B true CN110333574B (en) | 2024-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910482029.0A Active CN110333574B (en) | 2019-06-04 | 2019-06-04 | Optical fiber connector capable of being installed on site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110333574B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI734532B (en) * | 2020-02-21 | 2021-07-21 | 立佳興業股份有限公司 | Optical connector and optical module thereof |
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| CN108780193A (en) * | 2016-02-10 | 2018-11-09 | 住友电气工业株式会社 | Optical connector lock pin and light connects construction |
| CN108983362A (en) * | 2017-05-31 | 2018-12-11 | 矢崎总业株式会社 | Optical conenctor |
| CN110208913A (en) * | 2018-12-05 | 2019-09-06 | 中航光电科技股份有限公司 | A kind of optical fiber connector of site operation |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995614A (en) * | 2009-08-03 | 2011-03-30 | 矢崎总业株式会社 | Fibre optical connector with ferrule end faces in non-contact state |
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| CN202362492U (en) * | 2011-08-19 | 2012-08-01 | 朱文宾 | Connector for rapid fiber connector |
| CN203164472U (en) * | 2013-02-25 | 2013-08-28 | 潮州三环（集团）股份有限公司 | Movable optical fiber connector assembly with capability of light reflection |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110333574A (en) | 2019-10-15 |
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