CN201837739U - Expandable exchange board in optical fiber exchange system - Google Patents
Expandable exchange board in optical fiber exchange system Download PDFInfo
- Publication number
- CN201837739U CN201837739U CN2010205192166U CN201020519216U CN201837739U CN 201837739 U CN201837739 U CN 201837739U CN 2010205192166 U CN2010205192166 U CN 2010205192166U CN 201020519216 U CN201020519216 U CN 201020519216U CN 201837739 U CN201837739 U CN 201837739U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- exchange
- cord circuit
- power board
- circuit optical
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The embodiment of the utility model provides an expandable exchange board in an optical fiber exchange system, which is divided into an exchange area and an expansion area, wherein a plurality of exchange holes are formed in the exchange area, at least one expansion hole is formed in the expansion area, the expansion hole is used for the insertion of one end of an expansion connecting optical fiber from one side, and the insertion of one end of a cord circuit optical fiber from the other side, so as to enable one end of the expansion connecting optical fiber to be butt-jointed with one end of the cord circuit optical fiber in the expansion hole, the other end of the expansion connecting optical fiber is connected into another exchange equipment, a cord circuit optical fiber fixing part used for fixing the end of the cord circuit optical fiber is inserted into the exchange hole below the exchange hole, and the cord circuit optical fiber fixing part comprises a sleeve chuck, a sleeve, a pressure plate and a nut cap which are sequentially arranged from top to bottom and all provided with through holes penetrating in vertical direction. The expandable exchange board can conveniently realize not only the insertion and fixing of a circuit optical fiber linker in the exchange hole, but also the expansion of the exchange board.
Description
Technical field
The utility model belongs to technical field of optical fiber communication, relates in particular to the power board expanded in a kind of optical fiber exchange system.
Background technology
At present, as basic bearer network---the fiber optic network of fiber-optic communications traffic, its operation maintenance work also is under the original artificial mode, promptly needs manually to remove to carry out jumping fiber to the scene usually and operates the butt joint exchange that realizes between the different fiber; But be limited by the influence of factor such as loaded down with trivial details of dispersion, the Manual Switch operation in geographic position, so in routine duties manually-operated workload is huge and time-consuming, therefore how to realize that the automatic butt of fiber cores promptly is called the problem that people are concerned about very much.
At this problem, a kind of fiber full-switching equipment and method are disclosed in the Chinese patent application prospectus that on February 24th, 2010, disclosed publication number was CN101655585A, this equipment comprises the power board with a plurality of exchange holes, the two ends of every cord circuit optical fiber are separately fixed in a pair of cord circuit fiber optic links device, one end of every external fiber is fixed in the circuit optical fiber linker, the circuit optical fiber linker that drive unit will be fixed two outside line optical fiber ends that need exchange moves to idle exchange hole place insertion respectively wherein, unappropriated a pair of cord circuit fiber optic links device is moved on to target exchange hole place respectively also to be inserted wherein, thereby realize being inserted into the cord circuit fiber optic links device in the same exchange hole and the butt joint of cord circuit optical fiber in the circuit optical fiber linker and outside line optical fiber end, reach optics and connect.
But in the practice of technique scheme, a linker in cord circuit fiber optic links device and the circuit optical fiber linker is inserted into the exchange hole from the top that can expand power board, another linker is inserted into the exchange hole from the below that can expand power board, and this is inserted into the problem how linker the exchange hole is fixed with regard to having brought from the below.For the cord circuit optical fiber that can expand power board one side all is fixedly connected situation, cord circuit optical fiber inserts from the below of exchange hole, how to realize the fixing of cord circuit optical fiber end and how to realize that circuit optical fiber is the problem that people relatively are concerned about with stable butt joint of cord circuit optical fiber.
The utility model content
In view of this, the purpose of this utility model is to provide the power board expanded in a kind of optical fiber exchange system, and it is wherein also fixing to realize more easily that the circuit optical fiber linker inserts, and can realize expanding the dilatation of power board.
For achieving the above object, an embodiment of the present utility model provides the power board expanded in a kind of optical fiber exchange system, form a plurality of exchange holes on it, described exchange hole is used for inserting from the below end of cord circuit optical fiber, insert the circuit optical fiber linker of fixed outer circuit optical fiber from the top, the one cord circuit optical fiber fixed part that is used for fixing the cord circuit optical fiber end is inserted into the exchange hole from the below of exchange hole, and described cord circuit optical fiber fixed part comprises the cutting ferrule, sleeve, compressing tablet and the block that are equipped with the through hole that above-below direction runs through that sets gradually from top to bottom;
The end that described block stretches out from the exchange hole below forms outward extending edge, and the edge of described block fixes with the lower surface that can expand power board; Described compressing tablet comprises first cylinder and is arranged on the first annular outer of the described first cylinder bottom, and the lower surface that described block extend into the first annular outer of end in the exchange hole and described compressing tablet offsets;
Described sleeve comprises second cylinder, is arranged on second annular outer of the described second cylinder bottom and the annular top that is arranged on the second cylinder top;
First cylinder of described compressing tablet is inserted into the sleeve from the below, the lower surface of the upper surface of the first annular outer of described compressing tablet and the second annular outer of described sleeve offsets, second cylinder of described sleeve is inserted into the cutting ferrule from the below, and the upper surface of the second annular outer of described sleeve and the bottom surface of cutting ferrule offset;
The end of described cord circuit optical fiber is fixed in the cord circuit optical fiber fixed part by optical fiber head, the optical fiber head of cord circuit optical fiber be inserted into from the below cord circuit optical fiber fixed part and fixing wherein, described optical fiber head comprises near the fiber cores end of cord circuit optical fiber one section and the glass bushing that is wrapped in this section fiber cores outside;
The optical fiber head of described cord circuit optical fiber is arranged in described sleeve and stretches out from the upper end of described sleeve, the glass bushing of the optical fiber head of described cord circuit optical fiber is provided with loop configuration at the outer wall that is arranged in described sleeve, the sheathed spring in the outside of the glass bushing part below the loop configuration of described optical fiber head, the lower surface of the upper surface of the loop configuration of the optical fiber head of described cord circuit optical fiber and the annular top of described sleeve offsets; The top of first cylinder of described compressing tablet and the bottom of described spring offset.
Preferably, the sidewall of described cutting ferrule is provided with aduncate depressed part.
Preferably, upper shed place of described exchange hole has chamfering.
Preferably, the lower opening of described exchange hole has chamfering.
Preferably, described compressing tablet forms a gap that runs through up and down and radially extend to interior bone from the outside.
Preferably, the outer wall at the edge of described block is rectangular, and four angles at the edge of this block all have a depression, and the block angle respect to one another in adjacent four exchange holes is fixed on the lower surface that can expand power board by a shared screw.
Preferably, described cutting ferrule is the cutting ferrule that resilient material is made.
According to the utility model embodiment, the lock pin of the circuit optical fiber linker of fixed outer circuit optical fiber can be inserted in the exchange hole that can expand on the power board easily, and finally be inserted into the cutting ferrule of the cord circuit fiber optic links device fixed part that is arranged in exchange hole, the circuit optical fiber linker that is inserted in the exchange hole can stably be fixed, and gives security for the end of circuit optical fiber and cord circuit optical fiber achieves a butt joint; In addition, can expand extending bore on the power board, can reach purpose so that being connected to outside line optical fiber on the different power boards expanded realizes interconnectedly to the dilatation that can expand power board by this.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the axonometric drawing of the power board in the optical fiber exchange system that provides of the utility model embodiment;
Fig. 2 is the vertical view of the power board among Fig. 1;
Fig. 3 is the upward view of the power board among Fig. 1;
Fig. 4 is that the A-A of the power board among Fig. 2 is to cut-open view;
Fig. 5 is the partial enlarged drawing of area B among Fig. 4;
Fig. 6 is the user mode synoptic diagram of the power board that provides among the utility model embodiment;
Fig. 7 is the partial enlarged drawing of zone C among Fig. 6;
Fig. 8 is the partial enlarged drawing of region D among Fig. 3.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the axonometric drawing of the power board expanded in a kind of optical fiber exchange system of providing of the utility model embodiment, Fig. 2 is the vertical view of the power board expanded among Fig. 1, Fig. 3 is the upward view of the power board expanded among Fig. 1, shown in Figure 3 to scheming as Fig. 1, the power board expanded 1 in this optical fiber exchange system is divided into exchange area 1a and extended area 1b.Exchange area 1a goes up and forms a plurality of exchange holes 21, and extended area 1b goes up and forms a plurality of extending bores 22.
Exchange hole 21 is used for inserting from the below end of cord circuit optical fiber, and inserts the circuit optical fiber linker of fixed outer circuit optical fiber from the top.In the optical fiber exchange system, other network equipments that outside line fiber optic links device outside need exchanges, cord circuit optical fiber is used to connect two outside line optical fiber, thus the exchange between the outside network device that two outside line optical fiber that realization is connected by cord circuit optical fiber connect respectively.For an end of realizing outside line optical fiber docks with an end of cord circuit optical fiber, circuit optical fiber linker that can fixed outer circuit optical fiber one end is inserted into from the exchange hole 21 of opposite side insertion cord circuit optical fiber.Cord circuit optical fiber in the power board expanded that provides in the present embodiment all is to be inserted into the exchange hole 21 from the below that can expand power board 1, and each end of cord circuit optical fiber all is fixed in the exchange hole motionless; And the circuit optical fiber linker all is to be inserted into the exchange hole 21 from the top that can expand power board 1, and the circuit optical fiber linker is and to move by device clampings such as the mechanical arms of outside, therefore the position of the exchange hole of circuit optical fiber linker insertion can change, like this, because cord circuit optical fiber is from all expanding below the power board, so whole exchange system better appearance, the circuit optical fiber linker all is to be positioned at the top that can expand power board in addition, so make things convenient for mechanical arm to the clamping of circuit optical fiber linker with move.
Extending bore 22 is used for inserting expansion from a side and connects optical fiber, insert an end of cord circuit optical fiber from opposite side, dock in extending bore 22 with an end of cord circuit optical fiber so that expansion connects an end of optical fiber, the other end that expansion connects optical fiber is linked in other the switching equipment.Can realize the expansion between the switching equipment like this, the feasible outside line optical fiber that is connected on the different switching equipment carries out interconnected, reaches the purpose to the dilatation of switching equipment.
Extended area 1b can be positioned at the one or both sides of exchange area 1a.Exchange hole 21 becomes rectangular array in exchange area 1a.
Fig. 4 for the A-A of the power board expanded in the optical fiber exchange system among Fig. 2 to cut-open view, Fig. 5 is the partial enlarged drawing of the area B among Fig. 4.Please be simultaneously referring to Fig. 4 and Fig. 5, in the present embodiment, cord circuit optical fiber fixedly finishing in exchange hole 21 by cord circuit optical fiber fixed part 3.The end of cord circuit optical fiber is fixed in the cord circuit optical fiber fixed part 3, and cord circuit optical fiber fixed part 3 is inserted into the exchange hole 21 from the below that can expand power board 1.
As shown in Figure 5, cord circuit optical fiber fixed part 3 comprises the cutting ferrule 33, sleeve 32, the compressing tablet 31 that are equipped with the through hole that above-below direction runs through that sets gradually from top to bottom and blocks a shot 34.
The end of cord circuit optical fiber is fixed in the cord circuit optical fiber fixed part 3 by optical fiber head 4, the optical fiber head 4 of cord circuit optical fiber be inserted into from the below cord circuit optical fiber fixed part 3 and fixing wherein, this optical fiber head 4 comprises near the fiber cores end of cord circuit optical fiber one section and the glass bushing 41 that is wrapped in this section fiber cores outside.The optical fiber head 4 of cord circuit optical fiber is arranged in sleeve 32 and stretches out from the upper end of sleeve 32, the glass bushing 41 of optical fiber head 4 is provided with loop configuration 42 at the outer wall that is arranged in sleeve 32, the sheathed spring 43 in the outside of the below glass bushing 41 of optical fiber head 4 loop configuration, the bottom of spring 43 offsets with the top that extend into the first cylinder 31b of the compressing tablet 31 the sleeve 32 from the below, the lower surface of the loop configuration 42 of the top of spring 43 and cord circuit optical fibre optical fibre head 4 offsets, and the annular top 32c of the upper surface of this loop configuration 42 and sleeve 32 offsets.
Describe the process that the power board expanded that provides by present embodiment is realized cord circuit optical fiber and outside line fiber alignment in detail below in conjunction with Fig. 6 and Fig. 7, Fig. 6 is the synoptic diagram that can expand the user mode of power board 1; Fig. 7 is the partial enlarged drawing of zone C among Fig. 6.As Fig. 6 and Fig. 7, insert the circuit optical fiber linker of a fixed outer circuit optical fiber from the top of exchange hole 21, only show the lock pin 5 and near the ingredient thereof in the exchange hole of being inserted into of circuit optical fiber linker among Fig. 6 and Fig. 7, wherein the end of outside line optical fiber is fixed in the lock pin 5 by its optical fiber head 6.
The lock pin 5 of circuit optical fiber linker inserts wherein from the top of exchange hole 21, the path of lock pin 5 partly is inserted in the cutting ferrule 33 of cord circuit optical fiber fixed part 3, the end that is fixed on the optical fiber head 6 of the outside line optical fiber in the circuit optical fiber linker achieves a butt joint with the optical fiber head 4 hungry ends that are fixed on the cord circuit optical fiber in the cord circuit optical fiber fixed part 3, thereby makes outside line optical fiber and cord circuit optical fiber realize that optics is interconnected.In addition, mechanical arm inserts the circuit optical fiber linker wherein process above exchange hole 21, if before being inserted into the precalculated position, the optical fiber head 6 of outside line optical fiber contacts with the optical fiber head 4 of cord circuit optical fiber, then in the process that circuit fiber optic links device continues to insert downwards, the optical fiber head 6 of outside line optical fiber will apply downward pressure to the optical fiber head 4 of cord circuit optical fiber, because the effect of the spring 43 in the cord circuit optical fiber fixed part 3, make the optical fiber head 4 of cord circuit optical fiber when receiving downward pressure, can move down, simultaneously because the elastic pressure of spring 43, make the optical fiber head 4 of cord circuit optical fiber in the process that moves down still can with the optical fiber head 6 of outside line optical fiber between realize stable docking.
For the lock pin 5 that improves the circuit optical fiber linker is inserted into stability in the cord circuit optical fiber fixed part 3 in the exchange hole, preferably the sidewall of the cutting ferrule 33 in cord circuit optical fiber fixed part 3 is provided with aduncate depressed part 33a.This depressed part 33a can carry out more stable clamping to the lock pin 5 that inserts the circuit optical fiber linker in the cutting ferrule 33.Above-mentioned cutting ferrule 33 can be made by resilient material, for example plastics.In order to realize
In addition, preferably, upper shed at exchange hole 21 also has chamfering, even there is trickle deviation mechanical arm the position that the circuit optical fiber linker is moved and the position in actual exchange hole like this, the also guide effect of the chamfering by exchange hole 2 upper sheds place makes level and smooth being inserted in the exchange hole 21 of circuit optical fiber linker.In addition, also can have chamfering, thereby can more easily block 34 be inserted in the exchange hole 21 at the lower opening of exchange hole 21.
How to consider that more easily the optical fiber head 4 with cord circuit optical fiber penetrates in the cord circuit optical fiber fixed part 3, preferably, forms a gap that runs through up and down and radially extend to its interior bone from the outside at compressing tablet 31.Like this, when the optical fiber head 4 with cord circuit optical fiber penetrates cord circuit optical fiber fixed part 3, only other parts of optical fiber head 4 related connected cord circuit optical fiber gap from compressing tablet 31 need be moved into the intermediate throughholes of compressing tablet 31.
The shape of the edge 34a of block 34 and this edge 34a can have a variety of with the fixed form that can expand the lower surface of power board 1, more attractive in appearance in order to make that block 34 is fixed on behind the lower surface that can expand power board 1, can adopt following preferred specific implementation.
Fig. 8 shows the partial enlarged drawing into region D among Fig. 3, and Fig. 8 shows this preferred implementation.As shown in Figure 8, the outer wall at the edge of block 34 is rectangular, all there is a depression 34a1 at four angles at the edge of block 34, block angle respect to one another in adjacent four exchange holes is fixed on the lower surface that can expand power board 1 by a shared screw 11, on the lower surface that can expand power board 1, corresponding screw hole 12 is set in the centre of adjacent four exchange holes for this reason.Like this, even if block is fixed on the lower surface that to expand power board 1 by screw, because the surface of screw is embedded in the depression on adjacent four block angles respect to one another, the surface of screw can not exceed much than the surface of block yet, even can be surperficial more identical or lower than what block a shot.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. the power board expanded in the optical fiber exchange system is divided into exchange area and extended area on it, and described exchange area forms a plurality of exchange holes, forms at least one extending bore on the described extended area;
Wherein, described exchange hole is used for inserting from the below end of cord circuit optical fiber, inserts the circuit optical fiber linker of fixed outer circuit optical fiber from the top; Described extending bore is used for inserting the end that expansion connects optical fiber from a side, opposite side inserts an end of cord circuit optical fiber, so that connecting an end of optical fiber, described expansion in described extending bore, docks with an end of described cord circuit optical fiber, the other end that described expansion connects optical fiber is linked in other switching equipment, it is characterized in that, the one cord circuit optical fiber fixed part that is used for fixing the cord circuit optical fiber end is inserted into the exchange hole from the below of exchange hole, and described cord circuit optical fiber fixed part comprises the cutting ferrule that is equipped with the through hole that above-below direction runs through that sets gradually from top to bottom, sleeve, compressing tablet and block;
The end that described block stretches out from the exchange hole below forms outward extending edge, and the edge of described block fixes with the lower surface that can expand power board; Described compressing tablet comprises first cylinder and is arranged on the first annular outer of the described first cylinder bottom, and the lower surface that described block extend into the first annular outer of end in the exchange hole and described compressing tablet offsets;
Described sleeve comprises second cylinder, is arranged on second annular outer of the described second cylinder bottom and the annular top that is arranged on the second cylinder top;
First cylinder of described compressing tablet is inserted into the sleeve from the below, the lower surface of the upper surface of the first annular outer of described compressing tablet and the second annular outer of described sleeve offsets, second cylinder of described sleeve is inserted into the cutting ferrule from the below, and the upper surface of the second annular outer of described sleeve and the bottom surface of cutting ferrule offset;
The optical fiber head of described cord circuit optical fiber be inserted into from the below cord circuit optical fiber fixed part and fixing wherein, described optical fiber head comprises near the fiber cores end of cord circuit optical fiber one section and the glass bushing that is wrapped in this section fiber cores outside;
The optical fiber head of described cord circuit optical fiber is arranged in described sleeve and stretches out from the upper end of described sleeve, the glass bushing of the optical fiber head of described cord circuit optical fiber is provided with loop configuration at the outer wall that is positioned at described sleeve, the sheathed spring in the outside of the glass bushing part below the loop configuration of described optical fiber head, the lower surface of the upper surface of the loop configuration of the optical fiber head of described cord circuit optical fiber and the annular top of described sleeve offsets; The top of first cylinder of described compressing tablet and the bottom of described spring offset.
2. the power board expanded in the optical fiber exchange system according to claim 1 is characterized in that the sidewall of described cutting ferrule is provided with aduncate depressed part.
3. the power board expanded in the optical fiber exchange system according to claim 1 is characterized in that upper shed place of described exchange hole has chamfering.
4. the power board expanded in the optical fiber exchange system according to claim 1 is characterized in that the lower opening of described exchange hole has chamfering.
5. the power board expanded in the optical fiber exchange system according to claim 1 is characterized in that, described compressing tablet forms a gap that runs through up and down and radially extend to interior bone from the outside.
6. the power board expanded in the optical fiber exchange system according to claim 1, it is characterized in that, the outer wall at the edge of described block is rectangular, four angles at the edge of this block all have a depression, and the block angle respect to one another in adjacent four exchange holes is fixed on the lower surface that can expand power board by a shared screw.
7. according to the power board expanded in any described optical fiber exchange system in the claim 1 to 6, it is characterized in that described cutting ferrule is the cutting ferrule that resilient material is made.
8. according to the power board expanded in any described optical fiber exchange system in the claim 1 to 6, it is characterized in that described extended area is positioned at the one or both sides of exchange area.
9. the power board expanded in the optical fiber exchange system according to claim 8 is characterized in that described exchange hole becomes rectangular array at exchange area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205192166U CN201837739U (en) | 2010-09-03 | 2010-09-03 | Expandable exchange board in optical fiber exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205192166U CN201837739U (en) | 2010-09-03 | 2010-09-03 | Expandable exchange board in optical fiber exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201837739U true CN201837739U (en) | 2011-05-18 |
Family
ID=44007846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205192166U Expired - Lifetime CN201837739U (en) | 2010-09-03 | 2010-09-03 | Expandable exchange board in optical fiber exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201837739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012541A (en) * | 2010-09-03 | 2011-04-13 | 张莉 | Extensible switching board in optical fiber switching system |
-
2010
- 2010-09-03 CN CN2010205192166U patent/CN201837739U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012541A (en) * | 2010-09-03 | 2011-04-13 | 张莉 | Extensible switching board in optical fiber switching system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101644796B (en) | Bidirectional optical fiber core butt joint device | |
| CN101609184B (en) | One-way optical fiber core butting device | |
| CN102012541B (en) | Extensible switching board in optical fiber switching system | |
| CN201837739U (en) | Expandable exchange board in optical fiber exchange system | |
| CN201749220U (en) | Exchange plate in optical fiber exchange system | |
| CN101644798A (en) | Optical fiber core butt joint plate | |
| CN102012540B (en) | Switch board in optical fiber switching system | |
| CN201749222U (en) | Exchange plate in an optical fiber exchange system | |
| CN105739027A (en) | Optical fiber splicing device | |
| CN201812059U (en) | Expandable switch board in fiber switching system | |
| CN101655586B (en) | Optical fiber core connector | |
| CN103412375A (en) | Optical fiber core butting connector | |
| CN201796162U (en) | Switch board in optical fiber switching system | |
| CN105259618A (en) | Fiber core butt joint structure | |
| CN106772823B (en) | A kind of fiber core docking matrix structure | |
| CN201681219U (en) | Spectacle leg and spectacle frame | |
| CN101614848B (en) | 24 core fiber full-switching equipment and method | |
| CN201725064U (en) | Fiber core linker | |
| CN201837740U (en) | Optical fiber core linker | |
| CN101614847B (en) | Fiber full-switching equipment and method | |
| CN102012545A (en) | Extensible switch board in optical switching system | |
| CN211229325U (en) | Assembled building decorative plate assembly | |
| CN102012546A (en) | Switch board in optical fiber switching system | |
| CN101614846B (en) | Fiber core alignment device | |
| CN201489145U (en) | Extendable switching card system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110518 Effective date of abandoning: 20120104 |