CN110609359A - MPO fiber connector - Google Patents
MPO fiber connector Download PDFInfo
- Publication number
- CN110609359A CN110609359A CN201811582696.8A CN201811582696A CN110609359A CN 110609359 A CN110609359 A CN 110609359A CN 201811582696 A CN201811582696 A CN 201811582696A CN 110609359 A CN110609359 A CN 110609359A
- Authority
- CN
- China
- Prior art keywords
- spring
- rear end
- limiting seat
- spring limiting
- seat
- 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.)
- Pending
Links
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
- G02B6/3869—Mounting ferrules to connector body, i.e. 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
- G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
Abstract
The invention relates to the technical field of connector devices, in particular to an MPO optical fiber connector, which can solve the problems that a spring limiting seat of the optical fiber connector in the prior art is not easy to install in place and has a potential stripping hazard. The MPO optical fiber connector comprises a shell assembly, wherein the shell assembly comprises an outer shell and an inner shell, the inner shell is provided with an inner cavity, a ferrule, a spring used for pushing the ferrule forwards and a spring limiting seat used for limiting the spring are arranged in the inner cavity, a clamping protrusion is arranged on the spring limiting seat, a clamping concave part matched with the clamping protrusion is arranged on the inner shell, a stopping part in stopping fit with the inner shell along the front-back direction is arranged at the rear end of the spring limiting seat, and when the stopping part of the spring limiting seat and the inner shell form stopping fit, the whole stopping surface on the clamping protrusion is positioned in front of the stopping surface of the clamping concave part.
Description
Technical Field
The invention relates to the technical field of connector devices, in particular to an MPO optical fiber connector.
Background
Along with the rapid development of data communication such as big data and cloud computing, the requirement of the market on network bandwidth is increased in a blowout manner, and further higher requirements are provided for the density of the optical fiber network. In optical fiber communication, in order to realize functions such as distribution and switching among different light rays, an MOP optical fiber connector which is a multi-core multi-channel plug-in connector is often used, wherein the MOP optical fiber connector is formed by butting and locking a female optical fiber connector with a guide pin hole and a male optical fiber connector with a guide pin on an adapter, and the push force of a compression spring is utilized to keep physical contact between matched insertion cores, so that multi-optical fiber interconnection of two optical cables is realized.
An optical fiber connector disclosed in patent document No. CN202453542U and publication No. 2012.09.26 includes a housing assembly formed by combining an outer housing and an inner housing, and a ferrule disposed in the inner housing for connecting optical fibers in an optical cable and capable of being mated with other ferrules. The rear side of the inserting core along the inserting matching direction is provided with a spring and a spring limiting seat for limiting the spring, the specific structure of the spring limiting seat is a frame structure which is formed by combining and limits the spring to move along the radial direction, the frame structure is respectively a first frame and a second frame, the first frame and the second frame are respectively arranged on the left side and the right side (the two sides perpendicular to the inserting direction) of the spring, and the first frame or the second frame is used for connecting the cantilever which is arranged in an extending mode along the inserting direction. And the cantilever is provided with a clamping protrusion, namely a barb, matched with the inner shell in a blocking way, and the clamping protrusion can be matched with a clamping concave part in the inner shell through the clamping protrusion when the inserting core, the spring and the spring limiting seat enter the inner shell, so that the clamping between the cantilever and the inner shell is realized. In order to ensure the positioning accuracy of the spring limiting seat in the inner shell, the tail part of the spring limiting seat is provided with a flange which is used as a stop part and protrudes outwards, and the flange can be matched with the rear end face of the inner shell in a stop way to position the position of the spring limiting seat in the inner shell.
However, the optical fiber connector also has structural defects: when assembling the optical fiber connector, in order to ensure the installation position of the spring limiting seat, the flange and the clamping protrusion on the spring limiting seat need to be simultaneously kept in an accurate matching relation with the inner shell as much as possible, but in the actual use process, the clamping protrusion on the spring limiting seat can be positioned at the position which is not clamped by the inner shell or only abutted against the inner shell, the flange on the tail end of the spring limiting seat can be in stop matching with the rear end face of the inner shell, so that the spring limiting seat cannot continuously advance in the inner shell, the barb on the spring limiting seat cannot form buckle matching with the clamping concave part in the inner shell, and the spring limiting seat is further not installed in place, and the inserting core and the spring limiting seat can be separated from the inner shell when the optical fiber connector is used.
Disclosure of Invention
The invention aims to provide an MPO optical fiber connector, which can solve the problems that a spring limiting seat of the optical fiber connector in the prior art is not easy to be installed in place and has the hidden trouble of disengagement.
In order to achieve the purpose, the MPO optical fiber connector adopts the following technical scheme:
an MPO optical fiber connector comprises a shell assembly, wherein the shell assembly comprises an outer shell and an inner shell, the inner shell is provided with an inner cavity, a ferrule, a spring used for pushing the ferrule forwards and a spring limiting seat used for limiting the spring are arranged in the inner cavity, a clamping protrusion is arranged on the spring limiting seat, a clamping concave part matched with the clamping protrusion is arranged on the inner shell, a stopping part matched with the inner shell in a stopping manner along the front-back direction is arranged at the rear end of the spring limiting seat, and when the stopping part of the spring limiting seat and the inner shell form the stopping fit, the whole stopping surface on the clamping protrusion is positioned in front of the stopping surface of the clamping concave part.
The beneficial effects are that: when the stopping part of the spring limiting seat is in stopping fit with the inner shell, the arrangement mode that the whole stopping surface on the clamping protrusion is positioned in front of the stopping surface of the clamping concave part is set, so that when the spring limiting seat is in clamping fit with the inner shell, the stopping surface of the clamping protrusion is inevitably positioned in front of the stopping surface of the clamping concave part between the clamping protrusion of the spring limiting seat and the clamping concave part of the inner shell, the stop part of the spring limit seat is in stop fit with the inner shell, the spring limit seat can only move backwards in the shell to enable the stop surface of the clamping protrusion to be attached to the stop surface of the clamping concave part, at the moment, although the stop part of the spring limit seat is disengaged from the inner shell, but the spacing seat of spring still receives the protruding cooperation restriction with the joint concave part of joint, can't withdraw from in the interior casing, has guaranteed that the spacing seat of spring can not deviate from in the interior casing.
Furthermore, the stop surface on the clamping protrusion is an inclined surface, and one side of the inclined surface close to the spring limiting seat is positioned on one side of the inclined surface far away from the spring limiting seat.
The beneficial effects are that: the blocking surface on the clamping protrusion is set to be an inclined surface, one side of the inclined surface, which is close to the spring limiting seat, is located on one side of the inclined surface, which is far away from the spring limiting seat, so that the inclined surface forms an inclined surface inclining backwards, and the inclined surface enables the clamping protrusion to form a barb-shaped structure, so that the clamping protrusion is more stable in clamping fit and higher in fit strength.
Furthermore, the spring limiting seat comprises a base body part positioned at the rear end of the spring limiting seat, the base body part is integrally inserted into the rear end opening of the inner cavity, and the rear end surface of the base body part is positioned near the rear end surface of the inner shell in the front-rear direction; further, the rear end face of the base body portion is flush with the rear end face of the inner shell, or the rear end face of the base body portion is recessed into the rear end opening of the inner cavity or is not larger than 5 mm.
The beneficial effects are that: when the stop part of the spring limiting seat is in stop fit with the inner shell, the rear end face of the base body part is positioned near the rear end face of the inner shell, so that the stable fit of the spring limiting seat and the inner shell can be ensured; the rear end face of the base body portion is flush with the rear end face of the inner shell, the radial size of the MPO optical fiber connector can be reduced, the rear end opening of the rear end face of the base body portion, which is concave into the inner cavity, or the rear end opening of the rear end face, which is convex out of the inner cavity, is not larger than 5mm, and the spring limiting seat and the inner shell can be completely matched in arrangement in the mode.
Furthermore, at least one side opening edge of the rear end opening of the inner cavity is provided with a chamfer to form a flaring structure, the rear end of the base body part is provided with a flaring adapting section, and the flaring adapting section is provided with an inclined side surface adapted to the flaring structure.
The beneficial effects are that: the flaring structure is arranged at the opening at the rear end of the inner cavity, the inclined side face is correspondingly arranged on the base body part, the flaring structure and the inclined side face form a guide face for guiding the matching of the flaring structure and the inclined side face, so that the matching of the inner shell and the spring limiting seat is facilitated, and the inner shell and the spring limiting seat are more smoothly inserted.
Further, the inner housing has a rectangular cross section, and the inclined side surface is provided on a side of the base portion corresponding to a width of the rectangle.
The beneficial effects are that: the inclined side faces are arranged on the corresponding side edges of the wide sides of the rectangle, so that the width of the inner shell and the spring limiting seat is increased, the height is limited, and the optical line connector can be conveniently plugged on equipment.
Furthermore, the root of the clamping protrusion is in arc-shaped transitional connection with the main body of the spring limiting seat.
The beneficial effects are that: the arc-shaped transitional connection is arranged between the clamping protrusion and the spring limiting seat, so that the stress concentration condition of the root part of the clamping protrusion in clamping fit can be reduced, and the service life of the spring limiting seat is prolonged.
Furthermore, the two sides of the spring limiting seat corresponding to the wide side of the rectangle are respectively provided with an elastic cantilever, and the two elastic cantilevers are respectively provided with the clamping protrusions.
The beneficial effects are that: the elastic cantilever is arranged on the spring limiting seat and can swing along the axial direction of the spring limiting seat after being stressed, so that the spring limiting seat and the inner shell are matched more flexibly.
Furthermore, a positioning seat is arranged between the insertion core and the spring, a positioning groove is arranged on the positioning seat, and the front end of the spring is radially positioned and arranged in the positioning groove.
The beneficial effects are that: a positioning seat is arranged between the insertion core and the spring, and the positioning seat and a spring limiting seat can limit the integral position of the front end of the spring in the inner shell, so that eccentric wear between the spring and the optical fiber is avoided.
Furthermore, a limiting surface for limiting the rear end of the spring is arranged on the spring limiting seat.
The beneficial effects are that: the spring limiting seat can limit the integral position of the rear end of the spring in the inner shell, and eccentric wear between the spring and the optical fiber is avoided.
Drawings
FIG. 1 is a schematic view of the assembly of an MPO fiber optic connector according to the present invention;
FIG. 2 is a cross-sectional view of an unassembled MPO fiber optic connector of the present invention;
FIG. 3 is a cross-sectional view of the MPO fiber optic connector of the present invention when assembled;
FIG. 4 is a schematic diagram showing the fitting relationship between the clamping protrusion and the clamping recess of the MPO optical fiber connector according to the present invention;
FIG. 5 is a schematic view of a partial structural fit of the MPO fiber optic connector of the present invention;
FIG. 6 is a schematic structural view of a spring retainer of the MPO fiber connector of the present invention;
fig. 7 is a schematic structural diagram of the positioning seat of the MPO optical fiber connector of the present invention.
In the figure: 1. an inner housing; 11. an inner cavity; 12. a clamping hole; 13. a flaring structure; 2. inserting a core; 3. a spring; 4. a spring limiting seat; 41. a barb; 42. an inclined side surface; 43. a base portion; 44. a spring limiting surface; 5. positioning seats; 51. and (6) positioning a groove.
Detailed Description
The following description will be made of a specific embodiment of the MPO optical fiber connector according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the MPO optical fiber connector includes a housing assembly, the housing assembly includes an inner housing 1 and an outer housing (not shown in the figure) which are sleeved and arranged, the cross section of the inner housing 1 is rectangular, the inner housing 1 has an inner cavity 11, and a ferrule 2, a spring 3 for pushing the ferrule 2 forward and a spring limiting seat 4 for limiting the spring 3, which are sequentially arranged in the inner cavity 11 along a plugging direction. In order to ensure that the inserting core 2, the spring 3 and the spring limiting seat 4 are fixed in the inner shell 1, the spring limiting seat 4 is provided with a clamping protrusion, a clamping concave part matched with the clamping protrusion is correspondingly arranged in the inner cavity 11 of the inner shell 1, when the spring limiting seat 4 is clamped in the inner cavity 11, the spring limiting seat 4 limits the spring 3, the spring 3 pushes the inserting core 2 forwards under pressure, and the rear end of the spring limiting seat 4 is provided with a stopping part in stopping fit with the rear end surface of the inner shell 1 along the inserting direction (namely the front-back direction). In order to ensure that the spring limiting seat 4 can be installed in the inner shell 1 in place, when the stop part of the spring limiting seat 4 forms stop fit with the inner shell 1, the whole stop surface on the clamping protrusion is positioned in front of the stop surface of the clamping concave part.
As shown in fig. 2, a locking hole 12 is provided as a locking recess in the inner housing 1, and two elastic cantilevers are provided on the spring seat 4 and arranged perpendicular to the insertion direction, that is, arranged at intervals in the left-right direction, and the elastic cantilevers are deformed by pressure and swing left and right when the spring seat 4 enters the inner housing 1. On the sides of the elastic cantilevers facing away from each other, barbs 41 are provided as snap-in projections. As shown in fig. 3 and 4, the stopping surface of the barb 41, which is in stopping engagement with the hole wall of the fastening hole 12, is an inclined surface arranged obliquely backward, and an arc transition surface connecting the barb 41 and the outer side surface of the cantilever is provided between the two.
The spring limiting seat 4 comprises a base body portion 43 located at the rear end of the spring limiting seat 4, the rear end of the base body portion 43 is a corresponding portion of the spring limiting seat 4 for crimping a cable when in use, a portion of the inner cavity 11 corresponding to the base body portion 43 of the spring limiting seat 4 is an opening structure, the base body portion 43 of the spring limiting seat 4 is integrally inserted into the inner cavity 11 of the inner shell 1, the rear end face of the base body portion 43 is located near the rear end face of the rear end opening of the inner cavity 11 in the front-rear direction, a chamfer is arranged on the opening edge of the rear end opening of the inner cavity 11, the opening structure forms an outward-enlarged flaring structure 13, the base body portion 43 is provided with a flaring adapting section corresponding to the flaring structure 13, and the flaring adapting section is provided with an inclined side face 42 adapted to the flaring structure 13. As shown in fig. 5, the inclined side faces 42 are provided on the side of the base portion 43 corresponding to the wide side of the rectangle.
The rear end surface of the base portion 43 is located in the vicinity of the rear end surface of the inner housing 1 in the front-rear direction, and there are several cases: the first is that the rear end face of the base body portion 43 is disposed flush with the rear end face of the inner housing 1; the second is that the rear end face of the base body portion 43 is recessed into the rear end opening of the cavity 11 by a distance of not more than 5 mm; the third is that the rear end surface of the base body portion 43 projects out of the rear end opening of the internal cavity 11 by a distance of not more than 5 mm. The above three cases can be explained in which the rear end surface of the base body portion 43 is located in the vicinity of the rear end surface of the inner housing 1 in the front-rear direction. In the present embodiment, the first situation is adopted, that is, when the stopping portion of the spring limiting seat 4 is in stopping fit with the inner housing 1, the barb 41 of the spring limiting seat 4 is located in front of the stopping surface of the clamping hole 12, and at this time, the spring 3 pushes the spring limiting seat 4 to retreat backwards, so that the barb 41 is in clamping fit with the clamping hole 12. When the barb 41 is snap-fitted into the snap-fit hole 12, the rear end surface of the base portion 43 is flush with the rear end surface of the inner housing 1.
As shown in fig. 6, the spring seat 4 includes two elastic cantilever arms arranged along the left-right direction, barbs 41 as engaging protrusions are provided on outer side surfaces of the elastic cantilever arms, and the barbs 41 and inclined side surfaces 42 on the base portion 43 are arranged in the front-back direction along the insertion direction. While on the opposite inner side of the elastic cantilever a spring stop surface 44 is provided for completely stopping the spring 3. As shown in fig. 7, the positioning seat 5 disposed in front of the spring spacing seat 4 for limiting the spring 3 includes a positioning column disposed toward the ferrule 2 and a positioning main body for fixing the spring 3, the positioning main body is provided with a positioning groove 51 for limiting the front end of the spring 3, the positioning groove 51 is matched with the spring spacing surface 44 to limit the spring 3 in the inner housing 1, and the spring 3 can be prevented from eccentric wear with the optical fiber after being limited in movement.
When an operator uses the MPO optical fiber connector of the present invention, as shown in fig. 4, when the spring retainer 4, the positioning seat 5 on the front side thereof, and the spring 3 are inserted into the inner housing 1, and the inclined side 42 of the spring retainer 4 serving as a stopper is in stopper fit with the corresponding position of the inner housing 1, a space is provided between the barb 41 on the elastic cantilever of the spring retainer 4 and the wall of the hole 12 provided in the inner housing 1 and in which the barb 41 is in stopper fit, and in order to ensure that the optical fiber connector is mounted in place, the stopper surface of the barb 41 facing the hole 12 is located in front of the stopper surface of the hole 12 for engaging with the barb 41.
In other embodiments, the number of barbs as the clamping protrusions can be adjusted according to the structure of the optical fiber connector.
In other embodiments, the snap projections may also be provided in a planar configuration.
In other embodiments, the spring limiting seat may be configured as a sleeve structure, and the sleeve structure is not provided with a cantilever that is separately suspended, but directly sets the clamping protrusion on the outer side wall of the sleeve structure to be clamped and matched with the inner casing.
The above-mentioned embodiments, the objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a MPO fiber connector, includes the casing subassembly, and the casing subassembly includes shell body and interior casing, and interior casing has the inner chamber, is equipped with the lock pin in the inner chamber, is used for the spring that pushes away the lock pin forward and is used for carrying out spacing seat of spring to the spring, and it is protruding to be equipped with the joint on the spacing seat of spring, is equipped with the joint concave part with the protruding adaptation of joint on the interior casing, and the rear end of the spacing seat of spring is equipped with and interior casing along fore-and-aft direction stop complex stop portion: when the stop part of the spring limiting seat and the inner shell form stop matching, the whole stop surface on the clamping protrusion is positioned in front of the stop surface of the clamping concave part.
2. The MPO fiber optic connector according to claim 1, wherein: the stop surface on the clamping protrusion is an inclined surface, and one side of the inclined surface close to the spring limiting seat is positioned on one side of the inclined surface far away from the spring limiting seat.
3. The MPO fiber optic connector of claim 2, wherein: the spring limiting seat comprises a base body part positioned at the rear end of the spring limiting seat, the base body part is integrally inserted into the rear end opening of the inner cavity, and the rear end surface of the base body part is positioned near the rear end surface of the inner shell in the front-rear direction; the rear end face of the base body part is flush with the rear end face of the inner shell, or the rear end face of the base body part is recessed into the rear end opening of the inner cavity or protrudes out of the rear end opening of the inner cavity and is not more than 5 mm.
4. The MPO fiber optic connector according to claim 3, wherein: at least one side opening edge of the rear end opening of the inner cavity is provided with a chamfer to form a flaring structure, the rear end of the base body part is provided with a flaring adaptation section, and the flaring adaptation section is provided with an inclined side face adapted to the flaring structure.
5. The MPO fiber optic connector according to claim 4, wherein: the inner housing has a rectangular cross section, and the inclined side surface is provided on a side of the base portion corresponding to a width of the rectangle.
6. The MPO fiber optic connector according to claim 1, 2 or 3, wherein: the root of the clamping protrusion is in arc-shaped transitional connection with the main body of the spring limiting seat.
7. The MPO fiber optic connector according to claim 5, wherein: the two sides of the spring limiting seat, which correspond to the wide sides of the rectangle, are respectively provided with an elastic cantilever, and the two elastic cantilevers are respectively provided with the clamping protrusions.
8. The MPO fiber optic connector according to claim 1, wherein: a positioning seat is arranged between the insertion core and the spring, a positioning groove is arranged on the positioning seat, and the front end of the spring is radially positioned and arranged in the positioning groove.
9. The MPO fiber optic connector according to claim 1 or 8, wherein: and the spring limiting seat is provided with a limiting surface for limiting the rear end of the spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163382 | 2018-09-30 | ||
| CN2018111633824 | 2018-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110609359A true CN110609359A (en) | 2019-12-24 |
Family
ID=68888943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811582696.8A Pending CN110609359A (en) | 2018-09-30 | 2018-12-24 | MPO fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110609359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023023372A1 (en) * | 2021-08-19 | 2023-02-23 | Ppc Broadband Fiber Ltd. | Optical fiber connector for minimizing signal transmission losses |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713709A (en) * | 2009-08-13 | 2012-10-03 | 北卡罗来纳康姆斯科普公司 | Fiber management component |
| US20150355417A1 (en) * | 2014-06-09 | 2015-12-10 | Senko Advanced Components, Inc. | Reduced-profile data transmission element connectors, adapters, and connection assemblies thereof |
| CN205720783U (en) * | 2016-04-11 | 2016-11-23 | 深圳市嘉万光通信有限公司 | The plug construction of the joints of optical fibre |
| CN106687839A (en) * | 2014-09-12 | 2017-05-17 | Sei光学前沿株式会社 | Optical connector |
| JP2017134310A (en) * | 2016-01-29 | 2017-08-03 | 株式会社フジクラ | Optical connector and optical connector system |
-
2018
- 2018-12-24 CN CN201811582696.8A patent/CN110609359A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713709A (en) * | 2009-08-13 | 2012-10-03 | 北卡罗来纳康姆斯科普公司 | Fiber management component |
| US20150355417A1 (en) * | 2014-06-09 | 2015-12-10 | Senko Advanced Components, Inc. | Reduced-profile data transmission element connectors, adapters, and connection assemblies thereof |
| CN106687839A (en) * | 2014-09-12 | 2017-05-17 | Sei光学前沿株式会社 | Optical connector |
| JP2017134310A (en) * | 2016-01-29 | 2017-08-03 | 株式会社フジクラ | Optical connector and optical connector system |
| CN205720783U (en) * | 2016-04-11 | 2016-11-23 | 深圳市嘉万光通信有限公司 | The plug construction of the joints of optical fibre |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023023372A1 (en) * | 2021-08-19 | 2023-02-23 | Ppc Broadband Fiber Ltd. | Optical fiber connector for minimizing signal transmission losses |
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Application publication date: 20191224 |