US20030081913A1 - Optical connector with slidable shielding door - Google Patents

Optical connector with slidable shielding door Download PDF

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Publication number
US20030081913A1
US20030081913A1 US10/020,534 US2053401A US2003081913A1 US 20030081913 A1 US20030081913 A1 US 20030081913A1 US 2053401 A US2053401 A US 2053401A US 2003081913 A1 US2003081913 A1 US 2003081913A1
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Prior art keywords
optical fiber
housing
door
connector
shielding door
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US10/020,534
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US6554495B1 (en
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Ziqiang Zhu
Guohua Zhang
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Google LLC
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Assigned to HON HAI PRECISION IND. CO., LTD. reassignment HON HAI PRECISION IND. CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZHANG, GUOHUA, ZHU, ZIQIANG
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Publication of US20030081913A1 publication Critical patent/US20030081913A1/en
Assigned to GOLD CHARM LIMITED reassignment GOLD CHARM LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HON HAI PRECISION INDUSTRY CO., LTD.
Assigned to GOOGLE INC. reassignment GOOGLE INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GOLD CHARM LIMITED, HON HAI PRECISION INDUSTRY CO., LTD, HONG FUJIN PRECISION INDUSTRIAL (SHENZHEN) CO.
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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
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3847—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces
    • G02B6/3849—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces using mechanical protective elements, e.g. caps, hoods, sealing membranes

Definitions

  • the present invention relates to optical fiber receptacle connectors for receiving optical fiber plug connectors, and more particularly to a plastic optical fiber receptacle connector having a rotatable and slidable shielding door.
  • Optical fiber connectors are an important part of optical fiber communications systems. For instance, such connectors may be used as joints in long-distance optical fiber routing; to connect optical fibers to passive devices such as switches and attenuators; or to connect optical fibers to active devices such as radiation sources and detectors.
  • the optical fiber connector When an optical fiber connector is used for removably coupling an active device with an optical fiber plug, the optical fiber connector normally has a shielding door for preventing dust and other foreign matter from entering the optical fiber connector. Dust and other foreign matter adversely affect the performance of active devices inside the optical fiber connector.
  • FIG. 1 shows a plastic optical fiber connector disclosed in Japan Patent Application JP-A-6-331859.
  • the plastic optical fiber connector comprises a housing 1 having a bottom wall 12 , two sidewalls 14 extending upwardly from the bottom wall 12 , a top wall 11 , and a rear wall (not labeled) integrally connecting the top wall 11 and the sidewalls 14 .
  • a space 16 is defined in the housing 1 for receiving a complementary optical fiber plug 2 .
  • An active device 17 is embedded in the rear wall of the housing 1 .
  • a shielding door 13 is pivotably positioned at a front of the housing 1 . Once an optical fiber plug 2 is withdrawn from the optical fiber connector, the shielding door 13 is closed to avoid entry of dust into the optical fiber connector.
  • the shielding door 13 When the optical fiber plug 2 is inserted into the housing 1 , the shielding door 13 is rotated to an open position. However, once the optical fiber plug 2 is received in the optical fiber connector, the shielding door 13 remains entirely outside the housing 1 . As a result, an unduly large amount of space is occupied by the shielding door 13 . Furthermore, the shielding door 13 is unduly exposed and prone to sustain accidental damage.
  • the plastic optical fiber connector includes a housing, a shielding door, and a spring member mounted between the housing and the shielding door.
  • the shielding door When an optical fiber plug is inserted into the optical fiber connector, the shielding door is pushed open and the spring member is deformed. Spring force is thereby generated in the spring member and exerted on the shielding door.
  • the spring force of the spring member urges the shielding door to return to its original closed position.
  • the spring member is prone to break at a point where it interconnects with the shielding door, particularly after it has become fatigued from repeated use. The shielding door is thus easily damaged, and needs frequent replacement.
  • an object of the present invention is to provide a plastic optical fiber connector having a durable shielding door which prevents contamination of optical devices inside the optical fiber connector.
  • Another object of the present invention is to provide a plastic optical fiber connector having a shielding door received in the optical fiber connector once an optical fiber plug is inserted into the optical fiber connector.
  • the shielding door comprises two parallel slots defined in opposite side walls thereof, and a shaft extending through the slots. Opposite ends of the shaft are fixed in a front portion of the housing.
  • FIG. 1 is a perspective view of a conventional plastic optical fiber connector, together with a complementary optical fiber plug connector;
  • FIG. 2 is a perspective view of a plastic optical fiber connector in accordance with the present invention, showing a shielding door thereof in a closed position;
  • FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2;
  • FIG. 4 is a perspective view of the shielding door of the plastic optical fiber connector of FIG. 2;
  • FIG. 5 is similar to FIG. 4, but viewed from another aspect
  • FIG. 6 is similar to FIG. 2, but also showing a complementary optical fiber plug connector
  • FIG. 7 is similar to FIG. 6, but showing the shielding door in an open position
  • FIG. 8 is similar to FIG. 7, but showing the optical fiber plug connector inserted into a housing of the plastic optical fiber connector, and the shielding door fully inserted into the housing.
  • a plastic optical fiber connector 3 in accordance with the present invention comprises a housing 32 , an active device 33 and a shielding door 31 .
  • the housing 32 comprises a bottom wall 322 , two sidewalls 323 extending upwardly from opposite sides of the bottom wall 322 , a rear wall 324 , and a top wall 325 .
  • a cavity 35 is defined in the housing 32 , for receiving a complementary optical fiber plug connector 4 therein.
  • Two guide grooves 321 are defined in inner surfaces of the sidewalls 323 respectively, for slidably receiving the optical fiber plug 4 .
  • the active device 33 is embedded in the rear wall 324 of the housing 32 .
  • a plurality of conductive pins 331 of the active device 33 depends outwardly from the housing 32 , for electrically connecting with a printed circuit board (not shown).
  • the active device 33 is generally a light-emitting diode or a laser diode for generating optical signals.
  • the active device may alternatively be a photo diode for receiving optical signals and converting the optical signals into corresponding electrical signals.
  • the shielding door 31 is disposed at a front of the housing 32 .
  • the shielding door 31 comprises a plate 311 , two side walls 315 perpendicularly extending in a same direction from the plate 311 , a handle 312 extending in an opposite direction from one end of the plate 311 , and a shaft 313 disposed at an opposite end of the plate 311 .
  • the handle 312 facilitates manual operation of the shielding door 31 .
  • Two slots 314 are respectively defined in the sidewalls 315 .
  • the slots 314 are parallel and opposite to each other, and movingly accommodate the shaft 313 therein. Opposite ends of shaft 313 are fixed in a front portion of the housing 32 .
  • the shielding door 31 is rotatable and slidable with respect to the shaft 313 .
  • the optical fiber plug 4 comprises a main body 45 , a ferrule 43 embedded in a front portion of the main body 45 , and an optical fiber cable 41 retained in a rear portion of the main body 45 .
  • the two guide ribs 42 are formed on opposite sides of the main body 45 respectively, for engaging in the guide grooves 321 of the housing 32 .
  • the shielding door 31 when optical fiber connector 3 is not in use, the shielding door 31 is oriented in a closed position. This prevents the active device 33 from being harmed by foreign contamination. Similarly, when the optical fiber plug 4 is withdrawn from the housing 32 , the shielding door 31 is manually closed.
  • the shielding door 31 is manually rotated outwardly and upwardly to an open position. In this position, the plate 311 of the shielding door 31 is substantially parallel to the top wall 325 of the housing 32 .
  • the optical fiber plug 4 is then inserted into the cavity 35 of the housing 32 .
  • the guide ribs 42 of the optical fiber plug 4 are engagingly received in the guide grooves 321 of the housing 32 .
  • the shielding door 31 is then pushed into the housing 32 , with the sidewalls 315 of the shielding door 31 sliding over the shaft 313 of the shielding door 31 .
  • the handle 312 of the shielding door 31 abuts a front end of the housing 32 .
  • the shielding door 31 is manually pulled outwardly, and then rotatingly returned to its original closed position.

Abstract

A plastic optical fiber connector (3) includes a housing (32) defining a cavity (35) therein for receiving a complementary optical fiber plug (4), an active device (33) embedded in a rear of the housing, and a shielding door (31) disposed at a front of the housing. The shielding door includes two parallel slots (314) defined in opposite side walls (315) thereof, and a shaft (313) extending through the slots. Opposite ends of the shaft are fixed in a front portion of the housing. When the optical fiber plug is to be inserted into the cavity of the housing, the shielding door is manually rotated outwardly and upwardly from a closed position to an open position, and then slid into the housing. Once the optical fiber plug is withdrawn from the optical fiber connector, the shielding door is manually slid outwardly, and then rotatingly returned to its original closed position.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • The present invention relates to optical fiber receptacle connectors for receiving optical fiber plug connectors, and more particularly to a plastic optical fiber receptacle connector having a rotatable and slidable shielding door. [0002]
  • 2. Description of Prior Art [0003]
  • Optical fiber connectors are an important part of optical fiber communications systems. For instance, such connectors may be used as joints in long-distance optical fiber routing; to connect optical fibers to passive devices such as switches and attenuators; or to connect optical fibers to active devices such as radiation sources and detectors. [0004]
  • When an optical fiber connector is used for removably coupling an active device with an optical fiber plug, the optical fiber connector normally has a shielding door for preventing dust and other foreign matter from entering the optical fiber connector. Dust and other foreign matter adversely affect the performance of active devices inside the optical fiber connector. [0005]
  • FIG. 1 shows a plastic optical fiber connector disclosed in Japan Patent Application JP-A-6-331859. The plastic optical fiber connector comprises a housing [0006] 1 having a bottom wall 12, two sidewalls 14 extending upwardly from the bottom wall 12, a top wall 11, and a rear wall (not labeled) integrally connecting the top wall 11 and the sidewalls 14. A space 16 is defined in the housing 1 for receiving a complementary optical fiber plug 2. An active device 17 is embedded in the rear wall of the housing 1. A shielding door 13 is pivotably positioned at a front of the housing 1. Once an optical fiber plug 2 is withdrawn from the optical fiber connector, the shielding door 13 is closed to avoid entry of dust into the optical fiber connector. When the optical fiber plug 2 is inserted into the housing 1, the shielding door 13 is rotated to an open position. However, once the optical fiber plug 2 is received in the optical fiber connector, the shielding door 13 remains entirely outside the housing 1. As a result, an unduly large amount of space is occupied by the shielding door 13. Furthermore, the shielding door 13 is unduly exposed and prone to sustain accidental damage.
  • Another plastic optical fiber connector is disclosed in Japan Patent JP-2001-201663. The plastic optical fiber connector includes a housing, a shielding door, and a spring member mounted between the housing and the shielding door. When an optical fiber plug is inserted into the optical fiber connector, the shielding door is pushed open and the spring member is deformed. Spring force is thereby generated in the spring member and exerted on the shielding door. When the optical fiber plug is withdrawn from the optical fiber connector, the spring force of the spring member urges the shielding door to return to its original closed position. Unfortunately, the spring member is prone to break at a point where it interconnects with the shielding door, particularly after it has become fatigued from repeated use. The shielding door is thus easily damaged, and needs frequent replacement. [0007]
    • SUMMARY OF THE INVENTION
  • In view of the above, an object of the present invention is to provide a plastic optical fiber connector having a durable shielding door which prevents contamination of optical devices inside the optical fiber connector. [0008]
  • Another object of the present invention is to provide a plastic optical fiber connector having a shielding door received in the optical fiber connector once an optical fiber plug is inserted into the optical fiber connector. [0009]
  • In order to achieve the objects set above, a plastic optical fiber connector in accordance with the present invention comprises a housing defining a cavity therein for receiving a complementary optical fiber plug, an active device embedded in a rear of the housing, and a shielding door disposed at a front of the housing. The shielding door comprises two parallel slots defined in opposite side walls thereof, and a shaft extending through the slots. Opposite ends of the shaft are fixed in a front portion of the housing. When the optical fiber plug is to be inserted into the cavity of the housing, the shielding door is manually rotated outwardly and upwardly from a closed position to an open position, and then slid into the housing. Once the optical fiber plug is withdrawn from the optical fiber connector, the shielding door is manually slid outwardly, and then rotatingly returned to its original closed position. [0010]
  • Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:[0011]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of a conventional plastic optical fiber connector, together with a complementary optical fiber plug connector; [0012]
  • FIG. 2 is a perspective view of a plastic optical fiber connector in accordance with the present invention, showing a shielding door thereof in a closed position; [0013]
  • FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2; [0014]
  • FIG. 4 is a perspective view of the shielding door of the plastic optical fiber connector of FIG. 2; [0015]
  • FIG. 5 is similar to FIG. 4, but viewed from another aspect; [0016]
  • FIG. 6 is similar to FIG. 2, but also showing a complementary optical fiber plug connector; [0017]
  • FIG. 7 is similar to FIG. 6, but showing the shielding door in an open position; and [0018]
  • FIG. 8 is similar to FIG. 7, but showing the optical fiber plug connector inserted into a housing of the plastic optical fiber connector, and the shielding door fully inserted into the housing.[0019]
    • DETAILED DESCRIPTION OF PREFERRED EMBODIMENT OF THE INVENTION
  • Referring to FIGS. 2, 3 and [0020] 6, a plastic optical fiber connector 3 in accordance with the present invention comprises a housing 32, an active device 33 and a shielding door 31. The housing 32 comprises a bottom wall 322, two sidewalls 323 extending upwardly from opposite sides of the bottom wall 322, a rear wall 324, and a top wall 325. A cavity 35 is defined in the housing 32, for receiving a complementary optical fiber plug connector 4 therein. Two guide grooves 321 are defined in inner surfaces of the sidewalls 323 respectively, for slidably receiving the optical fiber plug 4. The active device 33 is embedded in the rear wall 324 of the housing 32. A plurality of conductive pins 331 of the active device 33 depends outwardly from the housing 32, for electrically connecting with a printed circuit board (not shown). The active device 33 is generally a light-emitting diode or a laser diode for generating optical signals. The active device may alternatively be a photo diode for receiving optical signals and converting the optical signals into corresponding electrical signals. The shielding door 31 is disposed at a front of the housing 32.
  • Referring to FIGS. 4 and 5, the [0021] shielding door 31 comprises a plate 311, two side walls 315 perpendicularly extending in a same direction from the plate 311, a handle 312 extending in an opposite direction from one end of the plate 311, and a shaft 313 disposed at an opposite end of the plate 311. The handle 312 facilitates manual operation of the shielding door 31. Two slots 314 are respectively defined in the sidewalls 315. The slots 314 are parallel and opposite to each other, and movingly accommodate the shaft 313 therein. Opposite ends of shaft 313 are fixed in a front portion of the housing 32. Thus the shielding door 31 is rotatable and slidable with respect to the shaft 313.
  • Referring to FIGS. [0022] 6-8, the optical fiber plug 4 comprises a main body 45, a ferrule 43 embedded in a front portion of the main body 45, and an optical fiber cable 41 retained in a rear portion of the main body 45. The two guide ribs 42 are formed on opposite sides of the main body 45 respectively, for engaging in the guide grooves 321 of the housing 32.
  • Referring to FIG. 6, when [0023] optical fiber connector 3 is not in use, the shielding door 31 is oriented in a closed position. This prevents the active device 33 from being harmed by foreign contamination. Similarly, when the optical fiber plug 4 is withdrawn from the housing 32, the shielding door 31 is manually closed.
  • Referring to FIG. 7, when the [0024] optical fiber plug 4 is to be inserted into the optical fiber connector 3, the shielding door 31 is manually rotated outwardly and upwardly to an open position. In this position, the plate 311 of the shielding door 31 is substantially parallel to the top wall 325 of the housing 32.
  • Referring to FIG. 8, the [0025] optical fiber plug 4 is then inserted into the cavity 35 of the housing 32. The guide ribs 42 of the optical fiber plug 4 are engagingly received in the guide grooves 321 of the housing 32. The shielding door 31 is then pushed into the housing 32, with the sidewalls 315 of the shielding door 31 sliding over the shaft 313 of the shielding door 31. When the shielding door 31 is fully inserted into the housing 32, the handle 312 of the shielding door 31 abuts a front end of the housing 32.
  • Once the [0026] optical fiber plug 4 is withdrawn from the optical connector 3, the shielding door 31 is manually pulled outwardly, and then rotatingly returned to its original closed position.
  • While the present invention has been described with reference to a particular embodiment, the description is illustrative of the invention and is not to be construed as limiting the invention. Therefore, various modifications to the present invention can be made to the preferred embodiment by those skilled in the art without departing from the true spirit and scope of the invention as defined by the appended claims. For example, in an alternate embodiment the slot may be formed in the housing and the shaft may be formed on the door. [0027]

Claims (16)

1. An optical fiber connector for receiving a complementary optical fiber plug connector, said optical fiber connector comprising:
a housing;
an active device embedded in the housing; and
a shielding door defining at least one slot, the door comprising a shaft extending through the at least one slot and being located in a front portion of the housing;
wherein the door is rotatable and slidable with respect to the shaft, and when the optical fiber plug connector is inserted into the housing, the door is slidably receivable in the housing.
2. The optical fiber connector as described in claim 1, wherein the door defines two slots disposed opposite to each other.
3. The optical fiber connector as described in claim 2, wherein the door further comprises two sidewalls, and the slots are respectively defined in the sidewalls.
4. The optical fiber connector as described in claim 1, wherein the door further comprises a handle for facilitating manual operation of the door.
5. The optical fiber connector as described in claim 1, wherein the active device is a laser diode.
6. The optical fiber connector as described in claim 1, wherein the active device is a light-emitting device.
7. The optical fiber connector as described in claim 1, wherein the active device is a photo diode.
8. An optical connector for receiving an optical fiber plug connector, said optical connector comprising:
a housing;
a shielding door defining at least one slot, the door comprising a shaft extending through the at least one slot and being located in a front portion of the housing;
wherein the door is rotatable and slidable with respect to the shaft, and when the optical fiber plug connector is inserted into the housing, the door is slidably receivable in the housing.
9. The optical fiber connector as described in claim 8, wherein the door further comprises a handle for facilitating manual operation of the door.
10. The optical fiber connector as described in claim 8, wherein an active device is embedded in the housing.
11. The optical fiber connector as described in claim 10, wherein the active device is a light-emitting device.
12. The optical fiber connector as described in claim 10, wherein the active device is a laser diode.
13. The optical fiber connector as described in claim 10, wherein the active device is a photo diode.
14. A connector assembly comprising:
a housing defining a cavity therein;
a plug mateable with said housing; and
a shielding door moveable relative to the housing with interengaging device; wherein
when no plug is inserted into the cavity, said shielding door is, in a vertical position, vertically located around a front opening of said cavity to shield said cavity; when the plug is inserted into the cavity, said shielding door is, in a horizontal position, substantially horizontally received in an portion of the cavity and thus is located between said plug and one side wall of said housing in a vertical direction of the housing.
15. The assembly as described in claim 14, wherein said shielding door further includes a handle around an end thereof.
16. The assembly as described in claim 15, wherein said handle is closely adjacently located around one side of said front opening when said shielding door is in the vertical position, and is closely adjacently located around another side of said front opening opposite to said side when said shielding door is in the horizontal position
US10/020,534 2001-10-31 2001-12-13 Optical connector with slidable shielding door Expired - Lifetime US6554495B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TW90218617U 2001-10-31
TW090218617U TW500230U (en) 2001-10-31 2001-10-31 Fiber optic connector
TW90218617 2001-10-31

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US6554495B1 US6554495B1 (en) 2003-04-29
US20030081913A1 true US20030081913A1 (en) 2003-05-01

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Cited By (5)

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EP1621335A1 (en) 2004-07-26 2006-02-01 Maschinenfabrik Wifag Method and device for sliding a shutter
US8186890B2 (en) 1997-05-20 2012-05-29 Adc Telecommunications, Inc. Fiber connector and adapter
WO2013126068A1 (en) * 2012-02-24 2013-08-29 Hewlett-Packard Development Company, L.P. Optical blind-mate connector
WO2017086930A1 (en) * 2015-11-17 2017-05-26 Hewlett-Packard Development Company, L.P. Device connectors
CN109212677A (en) * 2017-07-06 2019-01-15 科大国盾量子技术股份有限公司 A kind of optical fiber flange protective device

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CN2667511Y (en) * 2003-11-06 2004-12-29 富士康(昆山)电脑接插件有限公司 Optical fiber connector
CN2674471Y (en) * 2003-12-06 2005-01-26 富士康(昆山)电脑接插件有限公司 Optical fiber connector
US7390203B2 (en) * 2006-10-11 2008-06-24 Ortronics, Inc. Secure fiber optic network keyed connector assembly
US7540667B2 (en) 2007-08-01 2009-06-02 Ortronics, Inc. Positional differentiating connector assembly
CN201781135U (en) * 2010-07-27 2011-03-30 国基电子（上海）有限公司 Electronic device
US8636426B2 (en) * 2011-07-11 2014-01-28 Hon Hai Precision Industry Co., Ltd. Photoelectric conversion system with optical transceive module
JP6106375B2 (en) * 2012-07-09 2017-03-29 アトムメディカル株式会社 Phototherapy device
TWI578046B (en) * 2013-01-17 2017-04-11 鴻海精密工業股份有限公司 Photoelectric conversion device and optical fiber coupling connector
CN109031540B (en) * 2018-09-18 2021-05-04 深圳市盈迅精密机械有限责任公司 Optical fiber quick connector

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US6206577B1 (en) * 1998-02-05 2001-03-27 Alcoa Fujikura Limited Fiber optic adapter shutter door assembly
US6474876B1 (en) * 1999-08-13 2002-11-05 Fitel Usa Corp. Shielded optical fiber adaptor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8186890B2 (en) 1997-05-20 2012-05-29 Adc Telecommunications, Inc. Fiber connector and adapter
US8870466B2 (en) 1997-05-20 2014-10-28 Adc Telecommunications, Inc. Fiber connector and adapter
US9383524B2 (en) 1997-05-20 2016-07-05 Commscope Technologies Llc Fiber connector and adapter
EP1621335A1 (en) 2004-07-26 2006-02-01 Maschinenfabrik Wifag Method and device for sliding a shutter
WO2013126068A1 (en) * 2012-02-24 2013-08-29 Hewlett-Packard Development Company, L.P. Optical blind-mate connector
CN104067154A (en) * 2012-02-24 2014-09-24 惠普发展公司，有限责任合伙企业 Optical blind-mate connector
US9176284B2 (en) 2012-02-24 2015-11-03 Hewlett-Packard Development Company, L.P. Optical blind-mate connector
WO2017086930A1 (en) * 2015-11-17 2017-05-26 Hewlett-Packard Development Company, L.P. Device connectors
US10290967B2 (en) 2015-11-17 2019-05-14 Hewlett-Packard Development Company, L.P. Device connectors
CN109212677A (en) * 2017-07-06 2019-01-15 科大国盾量子技术股份有限公司 A kind of optical fiber flange protective device

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JP2003140005A (en) 2003-05-14
US6554495B1 (en) 2003-04-29
TW500230U (en) 2002-08-21

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