CN110673269A - Miniaturized fiber connector - Google Patents
Miniaturized fiber connector Download PDFInfo
- Publication number
- CN110673269A CN110673269A CN201910832482.XA CN201910832482A CN110673269A CN 110673269 A CN110673269 A CN 110673269A CN 201910832482 A CN201910832482 A CN 201910832482A CN 110673269 A CN110673269 A CN 110673269A
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- China
- Prior art keywords
- tail
- shell
- sleeve
- crimping
- cavity
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- Pending
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Classifications
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- 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
-
- 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
- G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention relates to a miniaturized optical fiber connector, which comprises a front shell, a dustproof cap, a contact pin, a spring, a positioning shell, a rear sleeve, a crimping sleeve and a tail sheath, wherein the tail part of the rear sleeve is a crimping column with rough lines to ensure the tensile strength after crimping, the crimping sleeve is crimped on the crimping column, and the tail sheath is sleeved on the crimping sleeve, and the front end of the rear sheath is inserted into a cavity of the positioning shell; after the whole connector is assembled, the tail end of the front shell, the middle shell of the rear sleeve and the front end of the tail sheath are simultaneously assembled in a cavity of the positioning shell. The invention can simultaneously assemble the tail end of the front shell, the middle shell of the rear sleeve and the front end of the tail sheath in the cavity of the positioning shell, thereby improving the space utilization rate, shortening the overall length of the connector and achieving the purpose of miniaturization so as to adapt to the requirement of optimizing the space height of the cabinet.
Description
Technical Field
The invention relates to a miniaturized optical fiber connector.
Background
At present, due to the optimization of cost and space of data centers and operator cabinets, more miniaturized plugs are needed, and with the continuous increase of communication flow, the installation density of part of equipment panel connectors in a communication system is increased, so that the size of the connectors needs to be reduced more, and the installation density is improved in a limited accommodating space. The miniaturized optical fiber connector can effectively reduce the wiring space of the jumper, saves the space, and enables more communication lines and corresponding equipment to be assembled in the cabinet.
As shown in fig. 1 and 2, the existing DLC plug includes, in order from front to back, a dust cap, a front housing, a pin, a spring, a rear sleeve, a positioning housing, a crimping sleeve, and a tail sheath. The front end of the rear sleeve is inserted into the inner cavity of the front shell, the positioning shell is clamped on the rear sleeve, and the tail sheath is arranged at the end parts of the positioning shell and the rear sleeve. Because the rear sleeve of the scheme is of an insert structure, the front end of the rear sleeve is an injection molding part, and the tail end of the rear sleeve is metal, the structure is high in cost and large in part volume; in addition, when all parts of the existing DLC plug are assembled, the DLC plug sequentially extends backwards, so that the space reuse rate is low, the DLC plug is longer in length, and the occupied space is large.
Disclosure of Invention
In order to overcome the defects, the invention provides a miniaturized optical fiber connector, which is characterized in that the structural design is changed, so that the tail end of a front shell, the middle shell of a rear sleeve and the front end of a tail sheath are simultaneously inserted and assembled in a cavity of a positioning shell, the space utilization rate is improved, and the overall length of the connector is shortened to achieve the purpose of miniaturization so as to meet the requirement of space height optimization of a cabinet.
The invention solves the technical problem by adopting the following technical scheme, and the miniaturized optical fiber connector provided by the invention comprises a front shell, a dustproof cap assembled at the front end of the front shell, a contact pin and a spring assembled in inner cavities of the front shell and a rear sleeve, a positioning shell, a rear sleeve with the front end inserted in a cavity at the tail part of the front shell, a crimping sleeve for crimping an optical cable tensile element and a tail sheath sleeved on the crimping sleeve, wherein the tail part of the rear sleeve is a crimping column with rough grains to ensure the tensile strength after crimping, the crimping sleeve is crimped on the crimping column, and the front end of the tail sheath sleeved on the crimping sleeve is inserted in a cavity of the positioning shell; after the whole connector is assembled, the tail end of the front shell, the middle shell of the rear sleeve and the front end of the tail sheath are simultaneously assembled in a cavity of the positioning shell.
Further, procapsid tail end is provided with the afterbody step that is used for increasing procapsid afterbody intensity and with location casing die cavity adaptation, and tail sheath front end is provided with the head step that is used for with location casing die cavity adaptation, and after whole connector assembly, the afterbody step of procapsid, the middle casing of back cover and the head step of tail sheath front end assemble simultaneously in location casing die cavity.
Furthermore, the front shell tail is provided with a T-shaped slot, the T-shaped slot comprises a first slot arranged on the step of the front shell tail and a second slot connected with the first slot, the front end of the rear sleeve middle shell is provided with a bulge matched with the first slot, and the bulge and the first slot are matched to facilitate the rear sleeve to be inserted into the inner cavity of the front shell tail to realize fool-proofing.
Furthermore, two sides of the middle shell of the rear sleeve are provided with third grooves used for being matched with the convex ribs on two sides of the inner wall of the cavity of the positioning shell.
Further, interference fit is carried out between the tail sheath and the positioning shell or the crimping sleeve, so that the tail sheath is fixed.
Furthermore, the rear sleeve is integrally formed by injection molding, so that the defect that the rear sleeve in the original structure is high in cost and large in size is overcome.
Compared with the prior art, the invention has the following advantages:
the invention adds the tail step which is matched with the cavity of the positioning shell at the tail part of the front shell of the connector by changing the structural design, and the head step which is matched with the cavity of the positioning shell is added at the front end of the tail sheath, the front end of the rear sheath is inserted into the cavity of the tail part of the front shell under the guidance of the bulge and the first slot so that the step of the tail part of the front shell is tightly attached to one side surface of the middle shell of the rear sheath, the head step of the tail sheath is tightly attached to the other side surface of the middle shell of the rear sheath after being assembled, the shape of the middle shell of the rear sheath is also matched with the cavity of the positioning shell, after the whole, the tail step of the front shell, the middle shell of the rear sleeve and the head step of the tail sheath are simultaneously inserted and assembled in the cavity of the positioning shell, compared with the original connector, the connector with the structure has the advantages that the size is greatly reduced, the occupied space is small, and more communication lines and corresponding equipment can be assembled in the cabinet. And the back cover of the invention is an integral injection molding, compared with the prior art, the volume of the back cover is reduced, and the production cost is reduced. The invention has high space utilization rate, and one embodiment can shorten the whole length of the connector to 32mm, reduce the occupied space compared with the original connector (the whole length is 42mm), and meet the requirement of optimizing the space height of the cabinet.
Drawings
Fig. 1 is an exploded view of a prior art connector.
Fig. 2 is a schematic view of fig. 1 assembled.
Figure 3 is a schematic view of the connector of the present invention after assembly.
Fig. 4 is an exploded view of fig. 3.
Fig. 5 is a schematic structural view of the front case of fig. 3.
Fig. 6 is a schematic view of the structure of the rear cover of fig. 3.
Fig. 7 is a schematic structural view of the positioning housing in fig. 3.
Element and symbol description:
1: dust cap, 2: front case, 3: pin, 4: spring, 5: positioning housing, 6: rear cover, 7: crimping sleeve, 8: tail jacket, 9: front-housing aft cavity, 10: crimp post, 11: positioning the housing cavity, 12: front-housing tail step, 13: spring claw, 14: first slot, 15: second slot, 16: rear cover intermediate case, 17: projection, 18: third slot, 19: convex rib, 20: tail sheath head step, 21: elastic finger, 22: bump, 23: a clamping groove.
Detailed Description
In order to further illustrate the technical means and technical effects adopted by the present invention, the present invention is described in detail below with reference to the examples.
It should be noted that: the terms "side", "front", "rear", "tail", etc. indicating the orientations of the present invention are based on the illustrated orientations or positional relationships, and are used for convenience of describing the present invention, and thus, should not be construed as limiting the present invention.
As shown in fig. 4, the present invention includes a dust cap 1, a front housing 2, a pin 3, a spring 4, a positioning housing 5, a rear cover 6, a press-fit cover 7, and a tail boot 8. The dustproof cap is assembled at the front end of the front shell, the front end of the rear sleeve is assembled in an inner cavity 9 at the tail of the front shell in an inserting mode, a contact pin and a spring connected with the contact pin are assembled in inner cavities of the front shell and the rear sleeve, the tail of the rear sleeve is a crimping column 10 with rough grains to guarantee tensile strength after crimping, the crimping sleeve is crimped on the crimping column to achieve crimping and fixing of an optical cable tensile element and an optical cable (the optical cable tensile element is arranged on the crimping column, the optical cable tensile element is the prior art, not shown in the drawing, a fiber core of the optical cable penetrates into the contact pin, and a sheath of the optical cable is crimped by the crimping sleeve, which is well known by technical personnel in the field and is not described in detail again), the tail sheath is sleeved on the crimping sleeve, and. After the entire connector is assembled, the tail end of the front shell, the middle shell of the rear sleeve and the front end of the tail sheath are simultaneously assembled in the cavity of the positioning shell, as shown in fig. 3.
The procapsid tail end is provided with afterbody step 12 that has certain thickness and intensity and is used for increasing procapsid afterbody intensity, and the procapsid has been provided with the afterbody of bullet claw 13 one side and has seted up T type fluting, and T type fluting is including setting up in the first fluting 14 of procapsid afterbody step and the second fluting 15 of being connected with first fluting, thereby the external diameter of back cover front end casing slightly is less than procapsid tail end internal diameter and makes back cover front end can peg graft in procapsid afterbody inner chamber. The front end of the rear sleeve middle shell 16 is provided with a bulge 17 matched with the first slot of the T-shaped slot of the tail of the front shell, so that the rear sleeve can be more easily inserted into the inner cavity of the tail of the front shell, and the fool-proof effect is realized and the matching degree of the rear sleeve and the front shell is increased. The first slot and the second slot are used to provide a certain deformation space to facilitate the insertion of the rear cover into the rear end of the front housing, as shown in fig. 5 and 6.
Both sides of the rear cover middle shell are provided with third slots 18 for matching with ribs 19 on both sides of the inner wall of the cavity of the positioning shell, as shown in fig. 6 and 7.
The front end of the rear sleeve is inserted into a cavity at the tail part of the front shell, and the straight pull resistance is realized through the matching of the convex blocks 22 at the two sides of the rear sleeve and the clamping grooves 23 arranged at the tail part of the front shell. The bulge on the rear sleeve is inserted into the first open slot at the tail end of the front shell, so that the tail step of the front shell is close to one side surface of the middle shell of the rear sleeve, meanwhile, the compression joint sleeve is compressed and connected onto the compression joint column with the grain at the tail end of the rear sleeve to realize compression joint fixation of the optical cable tensile element, and then the tail sheath is compressed and connected onto the compression joint sleeve. The front end of the tail sheath is provided with a head step 20 which is used for being matched with a cavity of the positioning shell, the head step at the front end of the tail sheath is tightly attached to the other side face of the middle shell of the rear sheath, so that the tail of the front shell, the middle shell of the rear sheath and the front end of the tail sheath are assembled in the cavity of the positioning shell together, and the elastic fingers 21 on the positioning shell are matched with the elastic claws 13 on the front shell for unlocking and locking the connector and the adapter.
The overall dimension of the tail step of the front shell, the overall dimension of the middle shell of the rear sleeve and the overall dimension of the head step at the front end of the tail sheath are matched with the positioning shell cavity 11 to increase the assembling compactness, and after the whole connector is assembled, the tail step of the front shell, the middle shell of the rear sleeve and the head step at the front end of the tail sheath are assembled in the positioning shell cavity simultaneously. The tail sheath is in interference fit with the positioning shell or the crimping sleeve to realize the fixation of the tail sheath.
The rear sleeve is integrally injection-molded, the volume and the length of the rear sleeve are greatly reduced compared with the original rear sleeve, the head step at the front end of the tail sheath can be arranged in the cavity of the positioning shell, the space is recycled, the integral length of the connector is greatly shortened, the integral length of the optical fiber connector can be shortened to 32mm by one embodiment, and the length of the original optical fiber connector is more than 42 mm.
The optical fiber connector of the invention can be used for simplex LC connectors and can also be used for other connectors.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.
Claims (6)
1. A miniaturized optical fiber connector comprises a front shell, a dust cap assembled at the front end of the front shell, a contact pin and a spring assembled in inner cavities of the front shell and a rear sleeve, a positioning shell, a rear sleeve with the front end inserted in a cavity at the tail part of the front shell, a crimping sleeve for crimping an optical cable tensile element and a tail sheath sleeved on the crimping sleeve, and is characterized in that the tail part of the rear sleeve is a crimping column with rough grains to ensure the tensile strength after crimping, the crimping sleeve is crimped on the crimping column, and the tail sheath is sleeved on the crimping sleeve and the front end of the tail sheath is inserted in a cavity of the positioning shell; after the whole connector is assembled, the tail end of the front shell, the middle shell of the rear sleeve and the front end of the tail sheath are simultaneously assembled in a cavity of the positioning shell.
2. The miniaturized fiber optic connector of claim 1, wherein the rear end of the front housing is provided with a tail step for increasing the strength of the tail of the front housing and for engaging the cavity of the positioning housing, and the front end of the tail boot is provided with a head step for engaging the cavity of the positioning housing, the tail step of the front housing, the middle housing of the rear boot and the head step of the front end of the tail boot being simultaneously engaged in the cavity of the positioning housing after the connector is fully engaged.
3. The miniaturized fiber optic connector of claim 2, wherein the front housing has a T-shaped slot formed at a rear portion thereof, the T-shaped slot includes a first slot formed in a step of the rear portion of the front housing and a second slot connected to the first slot, the rear housing has a protrusion adapted to the first slot at a front end thereof, and the protrusion and the first slot cooperate to facilitate insertion of the rear housing into the rear cavity of the front housing for fool-proofing.
4. The miniaturized fiber optic connector of claim 1, wherein both sides of the rear housing intermediate shell are provided with third slots for engaging ribs on both sides of the cavity of the positioning shell.
5. The miniaturized fiber optic connector of claim 1, wherein the tail jacket is secured by an interference fit with the retention housing or the crimp sleeve.
6. The miniature fiber optic connector of claim 1, wherein the rear sleeve is integrally injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910832482.XA CN110673269A (en) | 2019-09-04 | 2019-09-04 | Miniaturized fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910832482.XA CN110673269A (en) | 2019-09-04 | 2019-09-04 | Miniaturized fiber connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110673269A true CN110673269A (en) | 2020-01-10 |
Family
ID=69076295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910832482.XA Pending CN110673269A (en) | 2019-09-04 | 2019-09-04 | Miniaturized fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110673269A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040047565A1 (en) * | 2002-09-11 | 2004-03-11 | Cheng Yung Chang | Optical connector assembly |
| US20070025666A1 (en) * | 2005-07-28 | 2007-02-01 | Sumiden High Precision Co., Ltd. | Optical connector plug |
| JP4077165B2 (en) * | 2000-02-29 | 2008-04-16 | ルーセント テクノロジーズ インコーポレーテッド | Connector for terminating an optical fiber and optical fiber cable terminated with a connector |
| CN103048742A (en) * | 2012-12-26 | 2013-04-17 | 中航光电科技股份有限公司 | DLC (Digital Loop Carrier) optical fiber connector |
| CN103852828A (en) * | 2013-07-10 | 2014-06-11 | 连展科技电子（昆山）有限公司 | Optical fiber connector |
| CN105467528A (en) * | 2015-09-29 | 2016-04-06 | 中航光电科技股份有限公司 | Optical fiber connector and optical contact part module of same |
| CN106154432A (en) * | 2016-08-23 | 2016-11-23 | 深圳市特发信息光网科技股份有限公司 | A kind of assembling Anti-stiff LC type flexible jumper |
| CN108535818A (en) * | 2018-06-22 | 2018-09-14 | 海峡医疗器械工程研究中心（常州）有限公司 | A kind of telecommunication optical fiber connector |
| US20190033531A1 (en) * | 2017-07-31 | 2019-01-31 | Seikoh Giken Co., Ltd. | Optical connector plug and duplex optical connector plug |
-
2019
- 2019-09-04 CN CN201910832482.XA patent/CN110673269A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4077165B2 (en) * | 2000-02-29 | 2008-04-16 | ルーセント テクノロジーズ インコーポレーテッド | Connector for terminating an optical fiber and optical fiber cable terminated with a connector |
| US20040047565A1 (en) * | 2002-09-11 | 2004-03-11 | Cheng Yung Chang | Optical connector assembly |
| US20070025666A1 (en) * | 2005-07-28 | 2007-02-01 | Sumiden High Precision Co., Ltd. | Optical connector plug |
| CN103048742A (en) * | 2012-12-26 | 2013-04-17 | 中航光电科技股份有限公司 | DLC (Digital Loop Carrier) optical fiber connector |
| CN103852828A (en) * | 2013-07-10 | 2014-06-11 | 连展科技电子（昆山）有限公司 | Optical fiber connector |
| CN105467528A (en) * | 2015-09-29 | 2016-04-06 | 中航光电科技股份有限公司 | Optical fiber connector and optical contact part module of same |
| CN106154432A (en) * | 2016-08-23 | 2016-11-23 | 深圳市特发信息光网科技股份有限公司 | A kind of assembling Anti-stiff LC type flexible jumper |
| US20190033531A1 (en) * | 2017-07-31 | 2019-01-31 | Seikoh Giken Co., Ltd. | Optical connector plug and duplex optical connector plug |
| CN108535818A (en) * | 2018-06-22 | 2018-09-14 | 海峡医疗器械工程研究中心（常州）有限公司 | A kind of telecommunication optical fiber connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200110 |
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| RJ01 | Rejection of invention patent application after publication |