CN103163597B - Optical connector - Google Patents

Optical connector Download PDF

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Publication number
CN103163597B
CN103163597B CN201210211270.8A CN201210211270A CN103163597B CN 103163597 B CN103163597 B CN 103163597B CN 201210211270 A CN201210211270 A CN 201210211270A CN 103163597 B CN103163597 B CN 103163597B
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CN
China
Prior art keywords
described
optical connector
shell
external shell
positioning convex
Prior art date
Application number
CN201210211270.8A
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Chinese (zh)
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CN103163597A (en
Inventor
胡明珍
陆友锋
莫翔
金建峰
Original Assignee
罗森伯格亚太电子有限公司
Priority date (The priority date 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 date listed.)
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Priority to CN201110421375 priority Critical
Priority to CN2011104213751 priority
Priority to CN201110421375.1 priority
Application filed by 罗森伯格亚太电子有限公司 filed Critical 罗森伯格亚太电子有限公司
Priority to CN201210211270.8A priority patent/CN103163597B/en
Publication of CN103163597A publication Critical patent/CN103163597A/en
Application granted granted Critical
Publication of CN103163597B publication Critical patent/CN103163597B/en

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Abstract

The present invention relates to a kind of optical connector, comprise the web member for being connected with RRU device, the inner shell being sheathed on optical cable one end and the external shell be sheathed on outside inner shell, web member is provided with positioning convex or locating slot, external shell is provided with the locating slot matched with positioning convex or the positioning convex matched with locating slot, locating slot comprises and allows the peristome that the axis of positioning convex externally housing enters locating slot and the location division stoping the self-align groove of positioning convex to exit, peristome has the sidewall of externally housing axis, location division has the sidewall stoping positioning convex along the axially-movable of sidewall external shell.Instant invention overcomes existing optical connector and be connected inconvenience, the high and shortcoming that operating efficiency is low of construction risk with RRU device, a kind of optical connector that can connect optical cable and RRU device is expediently provided.

Description

Optical connector

Technical field

The present invention relates to optical-fibre communications field, be specially optical connector optical cable being connected to RRU device.

Background technology

Optical cable is connected to RRU(Radio Remote Unit by the mode of screw thread or metal clamping by existing optical connector) equipment, i.e. radio frequency remoto module equipment, attended operation needs to apply larger strength, operating personnel need to operate by instrument both hands, therefore, operation is convenient not, and the efficiency of operation is also lower, and being arranged on eminence due to RRU device more, the equal Attended Operation of both hands will increase the security risk of operating personnel.

Summary of the invention

The technical matters that the present invention solves be to overcome existing optical connector be connected with RRU device inconvenient, construction risk is high and the shortcoming that operating efficiency is low, provides a kind of optical connector that can connect optical cable and RRU device expediently.

Optical connector of the present invention, the external shell comprising the web member for being connected with RRU device, being sheathed on the inner shell of optical cable one end and being sheathed on outside described inner shell, described web member is provided with positioning convex or locating slot, described external shell is provided with the locating slot matched with described positioning convex or the positioning convex matched with described locating slot, and described locating slot comprises and allows the peristome that described positioning convex enters described locating slot along the axis of described external shell and the location division stoping described positioning convex to exit from described locating slot.

Compared to the prior art optical connector of the present invention, has following beneficial effect:

Adopt optical connector of the present invention, only need when operating personnel operate to apply very little power, without any need for instrument, only need a hand optical cable can be connected on RRU device or other equipment, another hand can catch fixture to reduce construction risk, therefore, optical connector of the present invention is not only simple and efficient to handle, and substantially increases the security of operating personnel.

Accompanying drawing explanation

Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the optical connector of first embodiment of the invention;

Fig. 2 is the structural representation of the web member of the optical connector of first embodiment of the invention;

Fig. 3 is the perspective view of the external shell of the optical connector of first embodiment of the invention;

Fig. 4 is the structural representation of the inner shell of the optical connector of first embodiment of the invention;

Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of the optical connector of second embodiment of the invention;

Fig. 6 is the schematic diagram of optical connector of the present invention when being connected with RRU device;

Fig. 7 is the structural representation of the dust cap of optical connector of the present invention;

Fig. 8 is the axial cut-open view of the optical connector of first embodiment of the invention, and in the figure, optical connector is equipped with dust cap;

Fig. 9 is the perspective view of external shell away from one end of RRU device of the optical connector of first embodiment of the invention;

Figure 10 is that the shell locking teeth of the optical connector of first embodiment of the invention is meshed with low-pressure injection molding part locking teeth schematic diagram;

Figure 11 is the cross-sectional view of the low-pressure injection molding part locking teeth in Figure 10;

Figure 12 is the cross-sectional view of the shell locking teeth in Figure 10;

Figure 13 is the axial cut-open view of the optical connector of second embodiment of the invention, and optical connector is equipped with dust cap in the figure.

Reference numeral

1-optical connector, 11-web member, 12-inner shell, 13-external shell, 14-positioning convex, 15-locating slot, 16-first linking arm, 17-peristome, 18-location division, 19-transition part, 20-tight locking button, 23-shell locking teeth, 24-low-pressure injection molding part locking teeth, 25-inner casing step, 26-shell step, 27-wavy spring, 28-armour pipe, 29-fixture, 30-second linking arm, 31-dust cap is protruding, 32-rope, 33-dust cap, 4-RRU equipment, 5-optical cable, 51-bare fibre, 6-low-pressure injection molding part, 61-spacing preiection, 62-sonet standard connector, 63-overturn cover, 64-locking hook, 65-locating button, 66-optical cable, 67-becket, 68-location hook, the anti-pressure pipe of 7-.

Embodiment

First embodiment

Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the optical connector of first embodiment of the invention, Fig. 2 is the structural representation of the web member of the optical connector of first embodiment of the invention, Fig. 3 is the structural representation of the external shell of the optical connector of first embodiment of the invention, Fig. 4 is the structural representation of the inner shell of the optical connector of first embodiment of the invention, and Fig. 6 is the schematic diagram of optical connector of the present invention when being connected with RRU device.As shown in Fig. 1-Fig. 4 and Fig. 6, a kind of optical connector 1, comprise and RRU device 4 or the web member 11 of other equipment connections, the low-pressure injection molding part 6 being sheathed on optical cable 5 one end, the external shell 13 that is sheathed on the inner shell 12 outside low-pressure injection molding part 6 and is sheathed on outside inner shell 12, web member 11 is provided with positioning convex or locating slot, and external shell 13 is provided with the locating slot matched with positioning convex or the positioning convex matched with locating slot.

In the present embodiment, web member 11, inner shell 12 and external shell 13 all can adopt plastics, greatly can reduce the weight of optical connector.The similar flange of web member 11 shape, has the through hole allowing optical cable 5 to pass through, and has two symmetrically arranged first linking arms 16 stretched out to the side away from RRU device 4.Web member 11 is fixed by screws in the jack place of RRU device 4 for grafting optical cable 5, and the outside of two the first linking arms 16 of web member 11 is equipped with positioning convex 14.The inwall of external shell 13 offers two locating slots 15 matched with positioning convex 14, locating slot 15 comprises and allows the peristome 17 that the axis of positioning convex 14 externally housing 13 enters locating slot 15 and the location division 18 stoping the self-align groove 15 of positioning convex 14 to exit, and location division 18 is angled with the direction of peristome 17.The i.e. sidewall of peristome 17 externally housing 13 axially extension, location division 18 has the sidewall stoping positioning convex 14 along the axially-movable of sidewall external shell 13.When positioning convex 14 is for exiting from location division 18, the sidewall of location division 18 applies the power stoping positioning convex 14 to exit to positioning convex 14.Certainly, also at the arranged outside locating slot of the first linking arm 16 of web member 11, positioning convex can be set in external shell 13 inside.Or arrange positioning convex in the inner side of the first linking arm 16 of web member 11, the outer wall of external shell 13 arranges locating slot, in this case, external shell 13 stretches into the inner side of the first linking arm 16.

When connecting optical cable 5 and RRU device 4, optical cable 5 is inserted in the jack of RRU device 4 through the openings of web member 11, the peristome 17 of the locating slot 15 of external shell 13 is made to aim at the positioning convex 14 of web member 11, and external shell 13 is pushed into can not continue motion, now positioning convex 14 enters in locating slot 15 along the sidewall of peristome 17, revolving outer housing 13 afterwards, positioning convex 14 enters location division 18, the sidewall of location division 18 stops the axially-movable of its externally housing 13, thus external shell 13 can not be departed from web member 11 when not having revolving force effect.Adopt optical connector of the present invention, only need when operating personnel operate to apply very little power, without any need for instrument, only need a hand optical cable 5 can be connected on RRU device 4 or other equipment, another hand can catch fixture to reduce construction risk, therefore, optical connector of the present invention is not only simple and efficient to handle, and substantially increases the security of operating personnel.In addition, dustproof and waterproof performance when optical connector of the present invention is connected with RRU device obtains large increase.

Wherein, location division 18 can perpendicular to the axis of described external shell 13, namely location division 18 stop the self-align groove 15 of positioning convex 14 to exit sidewalls orthogonal in the axis of external shell 13, locating slot 15 also comprises can transition part 19 between peristome 17 and location division 18, namely, the sidewall in sidewall connection opening portion 17 of transition part 19 and the sidewall of location division 18, the sidewall of transition part 19 is level and smooth sidewall, more steady when making positioning convex 14 enter locating slot 15.

Fig. 8 is the axial cut-open view of the optical connector of first embodiment of the invention, in the figure, optical connector is equipped with dust cap, Fig. 9 is the perspective view of external shell away from one end of RRU device of the optical connector of first embodiment of the invention, and Figure 10 is that the shell locking teeth of the optical connector of first embodiment of the invention is meshed with low-pressure injection molding part locking teeth schematic diagram.As shown in Fig. 8 ~ Figure 10, low-pressure injection molding part 6 has the spacing preiection 61 perpendicular to optical cable 5, can prevent optical cable 5 from pulling out from shell away from one end of RRU device completely when relaxed state, and low-pressure injection molding part 6 is also provided with multiple low-pressure injection molding part locking teeth 24.External shell comprises two parts away from one end of RRU device 4, a part is for holding the fixed part of low-pressure injection molding part 6, another part is the turning overturn cover 63 opened, the side of overturn cover 63 is connected with fixed part, the opposite side of overturn cover 63 is provided with tight locking button 20, and the inwall of overturn cover 63 is provided with multiple shell locking teeth 23.The fixed part of external shell is provided with the shell locating button 65 coordinated with the locking hook 64 of overturn cover 63 when overturn cover 63 closes.

When overturn cover 63 closes, together with the shell locking teeth 23 on its inwall engages each other with low-pressure injection molding part locking teeth 24, to prevent described optical cable 5 from exiting in described inner shell.Locking hook 64 is pressed, tight locking button 20 and shell locating button 65 is cooperatively interacted and locks.The locking that this structure makes optical cable 5 is very firm, prevents optical cable 5 from the inside of inner shell 12 and external shell 13 to movement, ensure that the steadiness of optical cable 5 and RRU device 4 or other equipment connections.

In this application, tight locking button 20 and shell locating button 65 can take various structure, as, locating button 65 has location hook, and tight locking button 20 has locking hook, and tight locking button 20 extends to the outside of described locating button 65, press tight locking button 20, locking hook and location hook are hooked and is combined.

A kind of preferred structure is that as shown in Figure 9, locating button 65 has location hook 68, and tight locking button 20 extends to the inner side of described locating button 65 and the formation reflex part that turns back inside locating button 65, and the reflex part of tight locking button 20 is provided with locking hook 64.Such tight locking button 20 has certain elasticity, unclamps the reflex part of tight locking button 20, and locking hook 64 hooks with location hook 68 phase and closes, and press the reflex part of tight locking button 20, locking hook 64 is separated with location hook 68.Like this, when overturn cover 63 closes, coordinating between tight locking button 20 with locating button 65 is more stable.In addition, no matter the operation making tight locking button 20 and locating button 65 match or make the two be separated, all more laborsaving easy.

Further, away from being that close-fitting is closely sealed between one end external shell of RRU device 4 and low-pressure injection molding part locking teeth, can prevent dust from entering between inner shell 12 and low-pressure injection molding part 6.

Figure 11 is the cross-sectional view of the low-pressure injection molding part locking teeth in Figure 10, and Figure 12 is the cross-sectional view of the shell locking teeth in Figure 10.Further, shell locking teeth 23 and the low-pressure injection molding part locking teeth of external shell 13 are all stepped tooth, and tooth top be arc-shaped as is illustrated by figs. 11 and 12, overturn cover 63 lock engage between process housing locking teeth 23 with low-pressure injection molding part locking teeth 24 more smooth and easy, avoid profile of tooth to top, make between external shell 13 with low-pressure injection molding part 6 coordinate more stable.

The outer wall of inner shell 12 can also be provided with inner casing step 25, inner shell 12 is also arranged with wavy spring 27, wavy spring 27 adopts conventional wavy spring, namely there is the thin slice annular resilient hardware of multiple crest and trough, the inwall of external shell 13 is provided with the shell step 26 matched with inner casing step 25, and wavy spring 27 is between inner casing step 25 and shell step 26.Little wearing and tearing may be produced when external shell 13 assembles with web member 11, gap is formed between external shell 13 and web member 11, wavy spring 27 can fill up this gap, make assembling more accurate, make to realize resilient engagement between external shell 13 and inner shell 12, the operating handle of operating personnel is good simultaneously.

One end that optical cable 5 is connected with RRU device 4 is divided into two strands of bare fibres 51, the end of bare fibre 51 is connected with the sonet standard connector 62 in the jack that can insert RRU device 4, as shown in Figure 1, two strands of bare fibres 51 are coated togather by low-pressure injection molding part 6, to make bare fibre 51 waterproof and dustproof.

Wherein, per share bare fibre 51 also can be arranged with anti-pressure pipe 7, and described anti-pressure pipe 7, between described bare fibre 51 and described low-pressure injection molding part 6, can adopt metal to make, and when anti-pressure pipe can prevent low-pressure injection molding, low-pressure injection molding part 6 and bare fibre 51 are fixed together.Inevitably there are the vibrations along bare fibre 51 axis because of stressed when sonet standard connector 62 is inserted into jack, 1 because bare fibre 51 is not being fixed together with low-pressure injection molding part 6, therefore can with sonet standard connector 62 along bare fibre 51 axially-movable, make the connection between bare fibre 51 and sonet standard connector 62 more reliable, and meet IEC(International Electrotechnical Commission) standard.

Second embodiment

Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of the optical connector of second embodiment of the invention; as shown in Figure 5; one end that optical cable 5 is connected with RRU device 4 is divided into two share optical cables 66; two share optical cables 66 are coated with armour pipe 28 respectively; the adjustable length of armour pipe 28; both can adequately protect sub-optical cable 66, again can free adjustment and RRU device size for connection, reduces the limitation connecting time space.The becket 67 of the aramid fiber having the aramid fiber for crimping optical cable 5 and sub-optical cable 66 is overlapped in aramid fiber and the aramid fiber joint of two described sub-optical cables 66 of optical cable 5.Other are all identical with the first embodiment.

Preferred as above-mentioned two embodiments, as shown in Figure 4 and Figure 5, optical connector also comprises and being set in the fixture 29 preventing external shell 13 from sliding away from one end of web member 11 from optical cable 5 on optical cable 5, and fixture 29 adopts low-pressure injection molding to form.

Fig. 7 is the structural representation of the dust cap of optical connector of the present invention.The optical connector of above-mentioned two embodiments can also comprise the dust cap 33 matched with external shell 13, as shown in Fig. 7 Fig. 8 and Figure 11, covering the opening part at external shell 13 when dust cap 33 is not for being inserted on RRU device 4 or other equipment at optical cable 5, preventing from optical connector, entering dust or water.In the present embodiment, dust cap 33 has on two the second linking arms, 30, two the second linking arms 30 that externally housing 13 stretches out and all has the dust cap projection 31 matched with the locating slot 15 of external shell 13.Make the dust cap protruding 31 of dust cap 33 aim at the peristome 17 of the locating slot 15 of external shell 13, dust cap 33 is covered on external shell 13, rotate dust cap 33 or external shell 13 afterwards, make dust cap projection 31 enter the location division 18 of locating slot 15.It is easy and simple to handle, quick, laborsaving that dust cap 33 and external shell 13 carry out being connected by operator.Dust cap can make optical connector be issued to higher water proof and dust proof class requirement in state that is unassembled or that be not connected with RRU device.

The connection of dust cap and external shell also can adopt following structure, that is, the second linking arm of dust cap arranges dust-proof clevis, external shell arranges positioning convex, then the structure of dust-proof clevis is identical with the structure of locating slot 15.Namely dust-proof clevis comprises and allows the peristome that the axis of the positioning convex externally housing of external shell enters dust-proof clevis and the location division stoping the positioning convex of external shell to exit from dust-proof clevis.Dust-proof clevis also can comprise the transition part between its peristome and location division.Certainly, dust-proof clevis also can not have peristome, and now, operating personnel need to be connected with external shell by dust cap by larger strength.The structure of this section of text description does not illustrate in the drawings.

In addition as shown in figure 11, dust cap 33 can be connected with rope 32, rope can adopt nylon rope, the two ends of nylon rope crimp respectively and form nylon sling, the nylon rope retaining ring of one end is on optical cable 5, the nylon rope retaining ring of the other end, on the screw of dust cap, can prevent at dust cap 33 that the used time does not lose, and this rope can bear higher pulling force and reliably easy to connect.

Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.

Claims (15)

1. an optical connector, it is characterized in that: the external shell comprising the web member for being connected with RRU device, being sheathed on the inner shell of optical cable one end and being sheathed on outside described inner shell, described web member is provided with positioning convex or locating slot, described external shell is provided with the locating slot matched with described positioning convex or the positioning convex matched with described locating slot, and described locating slot comprises and allows the peristome that described positioning convex enters described locating slot along the axis of described external shell and the location division stoping described positioning convex to exit from described locating slot;
Described optical connector also comprises the low-pressure injection molding part being sheathed on described optical cable one end, described low-pressure injection molding part is positioned at the inside of described inner shell, the outer wall of described low-pressure injection molding part has multiple low-pressure injection molding part locking teeth, described external shell comprises fixed part and overturn cover away from one end of described RRU device, described overturn cover side is connected with described fixed part, the opposite side of described overturn cover is provided with tight locking button, the inwall of described overturn cover is provided with multiple shell locking teeth that can be meshed with described low-pressure injection molding part locking teeth, the fixed part of described external shell is provided with the locating button coordinated with the tight locking button of described overturn cover when described overturn cover closes.
2. optical connector according to claim 1, is characterized in that: described location division is perpendicular to the axis of described external shell, and described locating slot also comprises the transition part between described peristome and described location division.
3. optical connector according to claim 1, it is characterized in that: described locating button has location hook, described tight locking button extends the inner side of described locating button and the formation reflex part that turns back inside described locating button when described overturn cover closes, the reflex part of described tight locking button is provided with and can hooks the locking hook of conjunction mutually with described location hook.
4. optical connector according to claim 1, is characterized in that: described locating button has location hook, and described tight locking button extends the outside of described locating button when described overturn cover closes, and described tight locking button has and can hook the locking hook of conjunction mutually with described location hook.
5. optical connector according to claim 1, is characterized in that: the shell locking teeth inside described overturn cover and described low-pressure injection molding part locking teeth are stepped tooth.
6. optical connector according to claim 1 and 2, it is characterized in that: the outer wall of described inner shell is provided with inner casing step, described inner shell is also arranged with wavy spring, the inwall of described external shell is provided with the shell step matched with described inner casing step, and described wavy spring is between described inner casing step and described shell step.
7. optical connector according to claim 1, it is characterized in that: one end that described optical cable is connected with described RRU device is divided into two strands of bare fibres, described two strands of bare fibres are coated with armour pipe respectively and form two root optical cables, and the becket of the aramid fiber having the aramid fiber for crimping described optical cable and described sub-optical cable is overlapped in aramid fiber and the aramid fiber joint of two described sub-optical cables of described optical cable.
8. optical connector according to claim 1, is characterized in that: one end that described optical cable is connected with described RRU device is divided into two strands of bare fibres, and described two strands of bare fibres are coated in described low-pressure injection molding part.
9. optical connector according to claim 8, is characterized in that: described bare fibre is also arranged with anti-pressure pipe, and described anti-pressure pipe is between described bare fibre and described low-pressure injection molding part.
10. optical connector according to claim 1 and 2, is characterized in that: described optical connector also comprises and being set on described optical cable with the fixture preventing described external shell from sliding away from one end of described web member from described optical cable.
11. optical connectors according to claim 1, it is characterized in that: described optical connector also comprises the dust cap matched with described external shell, described dust cap is provided with the dust-proof clevis that the dust cap matched with the locating slot of described external shell is protruding or match with the positioning convex of described external shell.
12. optical connectors according to claim 11, is characterized in that: described dust-proof clevis comprises and allows the peristome that described positioning convex enters described dust-proof clevis along the axis of described external shell and the location division stoping described positioning convex to exit from described dust-proof clevis.
13. optical connectors according to claim 12, is characterized in that: described dust-proof clevis also comprises the transition part between described peristome and described location division.
14. optical connectors according to claim 11, is characterized in that: described web member, inner shell, external shell and dust cap are all adopted made of plastic.
15. optical connectors according to claim 11, is characterized in that: dust cap is connected with rope, and the two ends of described rope crimp respectively and form nylon sling, and the nylon rope retaining ring of one end is on optical cable, and the nylon rope retaining ring of the other end is on the screw of dust cap.
CN201210211270.8A 2011-12-15 2012-06-20 Optical connector CN103163597B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201110421375 2011-12-15
CN2011104213751 2011-12-15
CN201110421375.1 2011-12-15
CN201210211270.8A CN103163597B (en) 2011-12-15 2012-06-20 Optical connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210211270.8A CN103163597B (en) 2011-12-15 2012-06-20 Optical connector

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CN103163597A CN103163597A (en) 2013-06-19
CN103163597B true CN103163597B (en) 2015-09-09

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104181650B (en) * 2014-08-28 2016-04-13 成都美美通信技术有限公司 A kind of anti-fracture type fiber adapter
CN104852190A (en) * 2015-03-26 2015-08-19 常熟市福莱德连接器科技有限公司 Solar photovoltaic connector
CN106154429B (en) * 2015-06-09 2018-03-09 罗森伯格技术(昆山)有限公司 The sealing protective box of the joints of optical fibre
EP3387716A4 (en) 2015-12-08 2019-07-10 Ericsson Telefon Ab L M Cable protection kit and radio remote unit including the same

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CN201233463Y (en) * 2008-06-30 2009-05-06 中兴通讯股份有限公司 Optical fiber component and RRU optical fiber connecting device
CN201383588Y (en) * 2008-12-24 2010-01-13 西安西康科技有限责任公司 Photoelectric mixed contact connector
CN101859954A (en) * 2009-04-08 2010-10-13 雷迪埃公司 Interconnection system
CN101907750A (en) * 2010-07-31 2010-12-08 中航光电科技股份有限公司 Fiber connector assembly and plug thereof
WO2011044724A1 (en) * 2009-10-13 2011-04-21 深圳日海通讯技术股份有限公司 Fiber connector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201233463Y (en) * 2008-06-30 2009-05-06 中兴通讯股份有限公司 Optical fiber component and RRU optical fiber connecting device
CN201383588Y (en) * 2008-12-24 2010-01-13 西安西康科技有限责任公司 Photoelectric mixed contact connector
CN101859954A (en) * 2009-04-08 2010-10-13 雷迪埃公司 Interconnection system
WO2011044724A1 (en) * 2009-10-13 2011-04-21 深圳日海通讯技术股份有限公司 Fiber connector
CN101907750A (en) * 2010-07-31 2010-12-08 中航光电科技股份有限公司 Fiber connector assembly and plug thereof

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