CN110618497A - Optical fiber connector - Google Patents
Optical fiber connector Download PDFInfo
- Publication number
- CN110618497A CN110618497A CN201811581557.3A CN201811581557A CN110618497A CN 110618497 A CN110618497 A CN 110618497A CN 201811581557 A CN201811581557 A CN 201811581557A CN 110618497 A CN110618497 A CN 110618497A
- Authority
- CN
- China
- Prior art keywords
- rear end
- spring
- flaring
- inner shell
- casing
- 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.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 34
- 230000006978 adaptation Effects 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 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
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening 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
- G02B6/3818—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type
- G02B6/3821—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres of a low-reflection-loss type with axial spring biasing or loading means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention relates to an optical fiber connector, which comprises an outer shell and an inner shell, wherein an insert core and a pushing spring used for pushing the insert core forwards are arranged in the inner shell, a spring limiting seat is inserted at the rear end of the inner shell and comprises a base body, at least one side opening edge of the opening at the rear end of the inner shell is provided with a flaring structure formed by a chamfer, a flaring adapting section is arranged at the rear end of the base body, the flaring adapting section is provided with an inclined side surface adapted to the flaring, and the rear end surface of the flaring adapting section is positioned near the rear end surface of the inner shell in the axial direction of a shell assembly. The flaring adaptation section of the base body part on the spring limiting seat is in limiting fit with the flaring structure of the shell assembly, the situation that the limiting structure is arranged at the rear end of the base body part is avoided, the axial size of the shell assembly connected with the spring limiting seat is reduced, the length of the optical fiber connector in the front-back direction is shortened, and the optical fiber connector can meet the application occasion with limited space.
Description
Technical Field
The present invention relates to an optical fiber connector.
Background
In optical fiber communications, it is necessary to use fiber optic connectors to enable continuation, distribution, switching, etc., between different optical fibers. The MPO fiber optic connector has the advantages of high connection density, stable and reliable performance, small volume, convenient operation, easy wiring management and the like, and is widely applied. As the density of connections increases and the size of the chassis becomes smaller, less and less space is left for the fiber optic connectors.
Chinese utility model patent with grant bulletin number CN202453542U discloses an optical fiber connector, this optical fiber connector includes housing assembly, a holder for inserting the lock pin subassembly in housing assembly and keeping the lock pin subassembly in housing assembly, housing assembly includes shell body and interior casing, holder has constituted the spacing seat of spring, holder includes the base member portion and the cantilever that extends to the front end by the base member, the rear end of base member is equipped with the tail cover joint part of being connected with the tail cover, wherein, the cantilever sets up in pairs, be equipped with on the cantilever be used for with housing assembly locking complex barb, holder and two cantilever structure in the middle of be equipped with the spring of elasticity roof pressure lock pin subassembly. However, the cantilever needs to be compressed and deformed in the assembling process, so that the cantilever must be ensured to have a certain length to ensure that the cantilever is not damaged when deformed, which results in a longer cantilever, and in addition, the housing component mounting seats are axially distributed and also need a larger axial space, which results in a longer length of the optical fiber connector and is difficult to meet the space requirement; in addition, the cantilever is easily deformed, which also causes the problem of the failure of the snap.
Disclosure of Invention
The invention aims to provide an optical fiber connector, which aims to solve the problems that the optical fiber connector in the prior art is long in axial dimension and difficult to meet the space requirement.
In order to achieve the purpose, the technical scheme of the optical fiber connector is as follows:
fiber connector includes casing assembly, and casing assembly includes shell body and interior casing, is equipped with the lock pin in the interior casing and is used for the forward top to push away the top of lock pin and pushes away the spring, and the rear end cartridge of interior casing is used for carrying out spacing spring spacing seat to pushing away the spring, and the spacing seat of spring is including the tail cover joint portion that is located the rear end and the adjacent base portion of tail cover joint portion, and interior casing rear end open-ended at least one side mouth is along being equipped with the flaring structure that the chamfer formed, the rear end of base portion is equipped with flaring adaptation section, and flaring adaptation section has the slope side with the flaring adaptation, and the rear end face of flaring adaptation section is located near the rear end face of interior casing on casing assembly's.
The invention has the beneficial effects that: the flaring adaptation section of the base body part on the spring limiting seat is in limiting fit with the flaring structure of the shell assembly, so that the rear end face of the base body part is positioned near the rear end face of the inner shell in the axial direction of the shell assembly, meanwhile, the rear end of the base body part is prevented from being provided with the limiting structure, the axial size of the shell assembly after being connected with the spring limiting seat is reduced, the length of the optical fiber connector in the front-back direction is shortened, and the optical fiber connector can meet the application occasion with limited space.
The rear end face of the flaring adaptation section is flush with the rear end face of the inner shell, or the rear end face of the flaring adaptation section is recessed or extends out of the rear end face of the inner shell by no more than 5 mm. Further shortening the effective length of the fiber optic connector in the fore-aft direction.
The spring limiting seat is provided with an elastic cantilever which stretches forwards in a hanging mode, the elastic cantilever is provided with a clamping protrusion, the inner wall of the inner shell is provided with a clamping recess matched with the clamping protrusion, and a blocking matching surface which is used for achieving blocking matching along the axial direction of the inner shell is an inclined surface which inclines backwards. Through the convex and concave buckle cooperation of joint the dismouting of the spacing seat of spring and interior casing of being convenient for.
The radial dimension of the base body portion is smaller than the dimension of the rear end opening of the inner housing. Facilitating insertion of the base portion into the inner housing.
Be equipped with casing pin passageway on the interior casing, be equipped with corresponding spacing seat pin passageway on the spacing seat of spring, the spacing seat of spring is through penetrating the casing pin passageway simultaneously and spacing seat pin passageway the pin along the axial positioning including the casing of interior casing, spacing seat pin passageway is for setting up the spacing seat recess in the spacing seat side of spring, casing pin passageway includes trompil and casing recess, and spacing seat recess is in with the casing recess when spacing seat of spring is fixed a position including the casing mutually involutory. The pin is inserted into the hole and the groove, so that the locking is firm.
The cross section of the inner shell is rectangular, a boss is arranged on the side face of the base body portion, a notch used for being matched with the boss in a positioning mode is arranged on the side wall, corresponding to the long edge of the rectangle, of the rear end of the inner shell, the boss protrudes out of the side wall of the inner shell, a sliding groove corresponding to the boss is arranged on the outer shell, and a front stop wall used for being matched with the boss in a stopping mode is arranged at the front end of the sliding groove when the outer shell is unlocked. Through boss and breach location fit, avoid the spacing seat of spring to excessively insert interior casing.
Drawings
Fig. 1 is a schematic structural diagram of an optical fiber connector according to an embodiment 1 of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
FIG. 4 is a schematic structural view of an embodiment 1 of the inner housing of the present invention;
FIG. 5 is a schematic structural diagram of a spring retainer according to embodiment 1 of the present invention;
FIG. 6 is a schematic structural diagram of an optical fiber connector according to embodiment 2 of the present invention;
in fig. 1 to 5: 1-an outer shell; 2-an inner housing; 3-a return spring; 4-pins; 5-inserting core; 6-positioning seat; 7-an optical fiber; 8-pushing springs; 9-a spring limiting seat; 10-turning out the edges; 11-a notch; 12-opening holes; 13-housing recess; 14-a flaring structure; 15-limiting seat groove; 16-a boss; 17-a boot junction; 18-a base portion; 19-a flare adaptation section; 20-a chute; 21-a front retaining wall;
in fig. 6: 101-an outer shell; 102-an inner housing; 103-core insert; 104-an optical fiber; 105-a pusher spring; 106-spring limit seat; 107-snap projections; 108-snap fit recess.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In embodiment 1 of the optical fiber connector of the present invention, as shown in fig. 1 and 2, the optical fiber connector includes a housing assembly, the housing assembly includes an outer housing 1 and an inner housing 2, the inner housing has a cavity, and a ferrule assembly, a pushing spring 8 for pushing the ferrule assembly forward, and a spring limiting seat 9 for limiting the pushing spring 8 are disposed in the cavity. As shown in fig. 2, the ferrule assembly includes a positioning seat 6, a ferrule 5 is disposed at the front end of the positioning seat 6, an optical fiber 7 is installed in the ferrule 5 along the front-back direction, a pushing spring 8 is sleeved on the optical fiber 7, and a limiting step for placing two ends of the pushing spring 8 is disposed at the opposite end of the positioning seat 6 and a spring limiting seat 9.
As shown in fig. 5, in the present embodiment, the spring seat 9 includes a tail sleeve combining portion 17 located at the rear end and a base portion 18 adjacent to the tail sleeve combining portion 17 and disposed at the front end of the tail sleeve combining portion 17, the rear end of the inner shell is opened to be a flared structure 14, the flared structure 14 in the present embodiment is formed by four side edges, and in other embodiments, the flared structure is formed by one or more than two side edges. In the present embodiment, each side of the flaring structure 14 is a straight inclined surface, and in other embodiments, each side of the flaring structure 14 is an arc-shaped inclined surface. The rear end part of the base part 18 is provided with a taper flaring adaptation section 19 adapted with a flaring structure, and the rear end surface of the flaring adaptation section 19 is flush with the rear end surface of the inner shell 2 in the axial direction of the shell assembly, so that the effective length of the optical fiber connector along the front-back direction is shortened. In other embodiments, the rear end face of the spring retainer is located before or after the rear end face of the inner housing. In this embodiment, the return spring 3 is arranged between the inner shell 2 and the outer shell 1, the outward turning edge 10 for supporting the return spring 3 is arranged at the rear end of the inner shell 2, and the small-diameter end of the flaring structure 14 is positioned between the front side and the rear side of the outward turning edge 10, so that the strength of the flaring structure is ensured under the condition that the radial size of the inner shell is not increased. In other embodiments, the small diameter end of the flare structure is located forward of or flush with the front side of the upturned edge.
As shown in fig. 3 to 5, the inner housing 2 is provided with an opening 12 having a central line perpendicular to the front-rear direction and a housing groove 13 extending along the central line direction of the opening 12, the opening 12 and the housing groove 13 form a housing pin passage, the spring retainer 9 is provided with a retainer groove 15 which is involuted with the housing groove 13 for the insertion of the pin 4, and the retainer groove 15 forms a retainer pin passage. The pin is inserted into the hole and the groove, so that the locking is firm; and simultaneously, the length of the cantilever is reduced, so that the axial effective length of the connector is reduced. In this embodiment, spacing seat recess 15 sets up in pairs and the distribution of symmetry is in the both sides of the spacing seat of spring 9, and trompil 12 and casing recess 13 on the corresponding interior casing set up in pairs to lock spacing seat of spring 9 and interior casing through two pins 4, guaranteed the reliability after interior casing and the spacing seat of spring locking, in other embodiments, the quantity of spacing seat recess is more than one or three, trompil and casing recess and spacing seat recess one-to-one. In this embodiment, casing recess 13 and spacing seat recess 15 are the rectangular channel, and the cross section that corresponds pin 4 is the rectangle, has further improved the reliability after interior casing and the spacing seat locking of spring. In other embodiments, the housing groove and the limiting seat groove are both rectangular grooves, and the cross section of the corresponding pin is circular. In this embodiment, spacing seat recess 15 link up the setting of spacing seat 9 of spring to increase the area of contact of spacing seat recess and pin, guarantee that the spacing seat of spring inserts interior casing locking back atress even, avoid the spacing seat of spring to take place the slope. In other embodiments, the groove of the limiting seat does not penetrate through the spring limiting seat, and the spring limiting seat may be unevenly stressed after being inserted into the inner housing and locked, so that the spring limiting seat is inclined, and the optical fiber is damaged.
In this embodiment, the cross section of the inner housing 2 is rectangular, the side surface of the base portion 18 is provided with a boss 16, the side wall of the rear end of the inner housing 2 corresponding to the long side of the rectangle is provided with a notch 11 for positioning and matching with the boss 16, and the boss 16 protrudes out of the side wall of the inner housing 2, as shown in fig. 2, the outer housing 1 is provided with a chute 20 corresponding to the boss 16, the front end of the chute 20 is provided with a front stop wall 21 for stopping and matching with the boss 16 when the outer housing 1 is unlocked, and the boss 16 and the notch 11 are positioned and matched to prevent the spring limit seat 9 from being excessively inserted into the inner housing. In other embodiments, no bosses are provided on the sides of the base portion.
In embodiment 2 of the optical fiber connector of the present invention, as shown in fig. 6, the optical fiber connector includes a housing assembly, the housing assembly includes an outer housing 101 and an inner housing 102, the inner housing 102 has a cavity, and a ferrule assembly, a pushing spring 105 for pushing the ferrule assembly forward, and a spring limiting seat 106 for limiting the pushing spring 105 are disposed in the cavity. The ferrule assembly comprises a positioning seat, a ferrule 103 is arranged at the front end of the positioning seat, an optical fiber 104 is arranged in the ferrule 103 along the front-back direction, a pushing spring 105 is sleeved on the optical fiber 104, and a limiting step for placing two ends of the pushing spring 8 is arranged at the opposite end of the positioning seat and a spring limiting seat 106. An elastic cantilever which is cantilevered forwards is arranged on the spring limiting seat 106, a clamping protrusion 107 is arranged on the elastic cantilever, a clamping recess 108 which is matched with the clamping protrusion 107 is arranged on the inner wall of the inner shell 102, a stopping matching surface which is used for realizing the stopping matching along the axial direction of the inner shell 102 between the clamping protrusion 107 and the inner shell 102 is an inclined surface which is inclined backwards, and the spring limiting seat 106 and the inner shell 102 can be conveniently disassembled and assembled through the buckling matching of the clamping protrusion 107 and the clamping recess 108. In this embodiment, the spring seat 106 further includes a base portion and a tail sleeve coupling portion connected to the rear end of the base portion, the base portion is not provided with a protrusion, the corresponding inner housing 102 is not provided with a notch, the outer housing 101 is not provided with a sliding slot, and the radial dimension of the base portion is smaller than the dimension of the opening at the rear end of the inner housing 102.
Claims (6)
1. Fiber connector, including housing assembly, housing assembly includes shell body and interior casing, is equipped with the lock pin in the interior casing and is used for the forward top to push away the top of lock pin and pushes away the spring, and the rear end cartridge of interior casing is used for carrying out spacing spring spacing seat to pushing away the spring, and the spacing seat of spring is including the tail cover joint portion that is located the rear end and the adjacent base body portion of tail cover joint portion, its characterized in that: at least one side opening edge of the rear end opening of the inner shell is provided with a flaring structure formed by a chamfer, the rear end of the base body part is provided with a flaring adaptation section, the flaring adaptation section is provided with an inclined side surface adapted to the flaring, and the rear end surface of the flaring adaptation section is positioned near the rear end surface of the inner shell in the axial direction of the shell assembly.
2. The fiber optic connector of claim 1, wherein: the rear end face of the flaring adaptation section is flush with the rear end face of the inner shell, or the rear end face of the flaring adaptation section is recessed or extends out of the rear end face of the inner shell by no more than 5 mm.
3. The optical fiber connector according to claim 1 or 2, wherein: the spring limiting seat is provided with an elastic cantilever which stretches forwards in a hanging mode, the elastic cantilever is provided with a clamping protrusion, the inner wall of the inner shell is provided with a clamping recess matched with the clamping protrusion, and a blocking matching surface which is used for achieving blocking matching along the axial direction of the inner shell is an inclined surface which inclines backwards.
4. The optical fiber connector according to claim 1 or 2, wherein: the radial dimension of the base body portion is smaller than the dimension of the rear end opening of the inner housing.
5. The optical fiber connector according to claim 1 or 2, wherein: be equipped with casing pin passageway on the interior casing, be equipped with corresponding spacing seat pin passageway on the spacing seat of spring, the spacing seat of spring is through penetrating the casing pin passageway simultaneously and spacing seat pin passageway the pin along the axial positioning including the casing of interior casing, spacing seat pin passageway is for setting up the spacing seat recess in the spacing seat side of spring, casing pin passageway includes trompil and casing recess, and spacing seat recess is in with the casing recess when spacing seat of spring is fixed a position including the casing mutually involutory.
6. The optical fiber connector according to claim 1 or 2, wherein: the cross section of the inner shell is rectangular, a boss is arranged on the side face of the base body portion, a notch used for being matched with the boss in a positioning mode is arranged on the side wall, corresponding to the long edge of the rectangle, of the rear end of the inner shell, the boss protrudes out of the side wall of the inner shell, a sliding groove corresponding to the boss is arranged on the outer shell, and a front stop wall used for being matched with the boss in a stopping mode is arranged at the front end of the sliding groove when the outer shell is unlocked.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018111634013 | 2018-09-30 | ||
| CN201811163401 | 2018-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110618497A true CN110618497A (en) | 2019-12-27 |
| CN110618497B CN110618497B (en) | 2024-04-05 |
Family
ID=68920297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811581557.3A Active CN110618497B (en) | 2018-09-30 | 2018-12-24 | Optical fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110618497B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111708123A (en) * | 2020-06-19 | 2020-09-25 | 汇聚科技（惠州）有限公司 | Novel short MPO connector |
| WO2022021627A1 (en) * | 2020-07-31 | 2022-02-03 | 上海光卓通信设备有限公司 | Ceramic ferrule and optical fiber connection assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2111148A1 (en) * | 1992-12-16 | 1994-06-17 | Danny Morlion | Connector assembly |
| US6217229B1 (en) * | 1998-07-30 | 2001-04-17 | Litton Systems, Inc. | Fiber optic connector with dowel alignment of mating members |
| US20050069264A1 (en) * | 2003-09-30 | 2005-03-31 | Luther James P. | Fiber optic connection for applying axial biasing force to multifiber ferrule |
| CN203012187U (en) * | 2012-09-26 | 2013-06-19 | 孙莉 | SC-type optical fiber quick connector |
| CN204705742U (en) * | 2015-04-13 | 2015-10-14 | 鸿富锦精密工业（深圳）有限公司 | The joints of optical fibre |
| CN209471272U (en) * | 2018-09-30 | 2019-10-08 | 中航光电科技股份有限公司 | Optical fiber connector |
-
2018
- 2018-12-24 CN CN201811581557.3A patent/CN110618497B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2111148A1 (en) * | 1992-12-16 | 1994-06-17 | Danny Morlion | Connector assembly |
| US6217229B1 (en) * | 1998-07-30 | 2001-04-17 | Litton Systems, Inc. | Fiber optic connector with dowel alignment of mating members |
| US20050069264A1 (en) * | 2003-09-30 | 2005-03-31 | Luther James P. | Fiber optic connection for applying axial biasing force to multifiber ferrule |
| CN203012187U (en) * | 2012-09-26 | 2013-06-19 | 孙莉 | SC-type optical fiber quick connector |
| CN204705742U (en) * | 2015-04-13 | 2015-10-14 | 鸿富锦精密工业（深圳）有限公司 | The joints of optical fibre |
| CN209471272U (en) * | 2018-09-30 | 2019-10-08 | 中航光电科技股份有限公司 | Optical fiber connector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111708123A (en) * | 2020-06-19 | 2020-09-25 | 汇聚科技（惠州）有限公司 | Novel short MPO connector |
| CN111708123B (en) * | 2020-06-19 | 2021-10-22 | 汇聚科技（惠州）有限公司 | Short MPO connector |
| WO2022021627A1 (en) * | 2020-07-31 | 2022-02-03 | 上海光卓通信设备有限公司 | Ceramic ferrule and optical fiber connection assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110618497B (en) | 2024-04-05 |
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