WO2017133642A1 - 光纤适配器 - Google Patents

光纤适配器 Download PDF

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Publication number
WO2017133642A1
WO2017133642A1 PCT/CN2017/072757 CN2017072757W WO2017133642A1 WO 2017133642 A1 WO2017133642 A1 WO 2017133642A1 CN 2017072757 W CN2017072757 W CN 2017072757W WO 2017133642 A1 WO2017133642 A1 WO 2017133642A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
card slot
flange
fixing
positioning member
Prior art date
Application number
PCT/CN2017/072757
Other languages
English (en)
French (fr)
Inventor
罗建峰
李钦汉
庄莉莉
Original Assignee
光联通讯技术有限公司
上海光联通讯技术有限公司
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.)
Filing date
Publication date
Application filed by 光联通讯技术有限公司, 上海光联通讯技术有限公司 filed Critical 光联通讯技术有限公司
Priority to US16/074,116 priority Critical patent/US11493697B2/en
Publication of WO2017133642A1 publication Critical patent/WO2017133642A1/zh

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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
    • G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
    • G02B6/3878—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules comprising a plurality of ferrules, branching and break-out means
    • G02B6/3879—Linking of individual connector plugs to an overconnector, e.g. using clamps, clips, common housings comprising several individual connector plugs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
    • G02B6/3893—Push-pull type, e.g. snap-in, push-on
    • 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
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules

Definitions

  • the utility model relates to a fiber optic adapter, in particular to a fiber optic adapter capable of saving the internal space occupied by the chassis.
  • Chinese patent CN201110196128.6 discloses a fiber optic adapter comprising a body, an inner casing, a cover plate and a light-shielding member having elasticity.
  • the body has an axial chamber defined by the first wall, the second wall, the third wall and the fourth wall, wherein the first wall is opposite the third wall and is connected to the second wall and the fourth wall.
  • the axial ends of the axial chambers of the body respectively have openings, and the first wall is provided with an access opening.
  • the inner casing is disposed within an axial chamber of the body, the inner casing including a flange and a hollow cylinder extending from the front surface of the flange.
  • the cover covers the access opening on the first wall.
  • the light shielding member is disposed in the housing of the body, the light shielding member includes: a horizontal portion on the third wall; a light shielding portion extending to the front of the opening of the hollow cylinder; a connection portion connected to the horizontal portion and the light shielding portion; and being horizontal The portion extends out of the hook portion for hooking on the flange.
  • the existing optical fiber adapter achieves the purpose of transmitting optical signals by inserting an LC-type optical fiber connector on the front and rear sides, and the overall size in the front-rear direction is long, especially at the rear of the optical fiber adapter.
  • the LC type fiber connector needs to occupy a large disk space inside the chassis, which is not conducive to the miniaturization trend of the chassis. It can be seen that it is necessary to improve it.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and to provide a fiber optic adapter capable of shortening the length of the rear portion and saving the occupation of the internal space of the chassis.
  • the present invention is directed to the above technical problem, and provides a fiber optic adapter adapted to receive at least two fiber optic connectors, wherein the fiber optic adapter includes:
  • a body having at least two receiving cavities arranged in a front-rear direction and circumferentially closed at a front portion thereof, and a mounting seat at a rear portion thereof;
  • each fiber optic connector includes a positioning member, a ferrule fixed to the positioning member and extending forward, an optical fiber exposed at the front end of the ferrule, and a fitting a sleeve sleeved on the outer circumference of the ferrule and a positioning cylinder further sleeved on the outer circumference of the sleeve, the front end of the positioning cylinder extends forwardly into the receiving cavity, and the rear end of the positioning cylinder is fixed to the positioning a first flange of the outer periphery of the positioning member;
  • the at least one fixing cover is locked on the mounting seat of the base body, wherein the fixing cover and the mounting seat are combined to form a first card slot, and the first card slot corresponds to the first flange of the fiber receiving plug .
  • the outer periphery of the positioning member is further provided with a second flange; the fixing cover and the mounting seat are further combined to form a second card slot, and the first card slot and the second card slot are spaced back and forth.
  • the second card slot corresponds to the second flange of the fiber-optic connector plug.
  • the mount is provided with a first lower half slot and an upper lower half slot open upwardly
  • the fixed cover a bottom portion is provided with a first upper half slot and a second upper half slot; wherein the first lower half slot and the first upper half slot are combined to form the first card slot, the second The lower half card slot and the second upper half card slot are combined to form the second card slot.
  • the first flange cooperates with the first card slot to define a front and rear position of the fiber optic connector; and the second flange cooperates with the second card slot to prevent rotation of the fiber optic connector.
  • the first flange is a circular flange that is capable of abutting against a rear surface of the first card slot;
  • the second flange is a square flange, the circumference of the second flange is It can match the inner contour of the second card slot.
  • the positioning member is substantially in the shape of a hollow cylinder, and a front surface of the positioning member is recessed with a mounting groove, and a rear end of the positioning cylinder is fixed in the mounting groove, and a front end of the sleeve is opposite to the ferrule
  • the front end protrudes forward, and the front end of the positioning cylinder also protrudes forward relative to the front end of the sleeve, wherein the front end of the inner wall of the positioning cylinder is narrowed inwardly to prevent the sleeve from coming forward.
  • a middle portion of the positioning member is formed with a passage for allowing the ferrule to penetrate from the back to the front, and a rear surface of the positioning member is recessed with a mounting groove; the optical fiber connector further includes abutting a rear cover at the rear of the ferrule, the front end of the rear cover being fixed in the mounting groove.
  • the fiber optic connector further includes a hose wrapped around an outer circumference of the optical fiber, and a rear surface of the rear cover is formed with a fixing groove, and a front end of the hose is fixed in the fixing groove.
  • the seat body and the fixing cover are both die-cast from a zinc alloy, and the outer periphery of the seat body is provided with a groove, and a conductive strip is disposed in the groove.
  • the central portion of the fixing cover is provided with a fixing hole up and down so as to be locked to the seat body by a fixing member penetrating the fixing hole.
  • a locking protrusion is protruded from each of the two sides of the seat body, and the locking protrusion is provided with a locking hole penetrating up and down.
  • a plurality of pairs of receiving cavities are juxtaposed on the seat body; the fixing cover has a plurality of fixing covers respectively for fixing a pair of fiber optic connectors.
  • one side of the seat body is provided with a recess, and the other side is correspondingly provided with a protrusion matching the recess.
  • the bottom of the seat body is provided with at least one fixing hole.
  • the utility model can lock at least two compact fiber optic connector plugs between the seat body and the fixed cover by skillfully setting the mating seat body, the fiber connector and the fixing cover.
  • the signal can be transmitted directly through the fiber connected to the rear of the fiber connector, without the need to insert a longer and larger LC fiber connector on the back side of the fiber adapter, thereby shortening the rear size and saving the space inside the chassis. Occupy.
  • 1 is a perspective view showing the combination of a preferred embodiment of the fiber optic adapter of the present invention and two fiber optic connectors.
  • FIG. 2 is an exploded perspective view of a preferred embodiment of the fiber optic adapter of the present invention and two fiber optic connectors.
  • FIG 3 is a top plan view of a preferred embodiment of the fiber optic adapter of the present invention and two fiber optic connectors.
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is a partial enlarged view of the area C of Figure 4.
  • Figure 6 is a top plan view of a preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 7 is a cross-sectional view taken along line B-B of Figure 6;
  • Figure 8 is a cross-sectional view taken along line D-D of Figure 6.
  • Figure 9 is an exploded perspective view of a preferred embodiment of the fiber optic adapter of the present invention and two fiber optic connectors.
  • Figure 10 is an exploded perspective view of a preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 11 is an exploded perspective view of another preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 12 is an exploded perspective view of the fiber optic connector of the preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 13 is a further exploded perspective view of the fiber optic connector of the present invention on the basis of Figure 12.
  • Figure 14 is a further exploded perspective view of the fiber optic connector of the present invention on the basis of Figure 13;
  • Figure 15 is a perspective view of a second preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 16 is an exploded perspective view of a third preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 17 is a perspective view of a fourth preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 18 is an exploded perspective view of a fourth preferred embodiment of the fiber optic adapter of the present invention.
  • Figure 19 is a perspective view of a combined application of a fourth preferred embodiment of the fiber optic adapter of the present invention.
  • the reference numerals are as follows: 10, 10a, 10b, 10c fiber optic adapter 20 fiber optic connector 201 ferrule 1, 1a, 1b, 1c seat 2, 2a, 2b, 2c fiber optic connector 3, 3a, 3b, 3c Fixing cover 4 first card slot 5 second card slot 6, 6b fastener 7 fastener 11 first lower half slot 12 second lower half slot 13 locking projection 14 mounting seat 18 recess 19 receiving cavity 21 Positioning member 22 ferrule 23 fiber 24 sleeve 25 positioning tube 26 back cover 27 hose 29 docking chamber 31, 31c first upper half slot 32 second upper half slot 39, 39b fixing hole 211 first flange 11 Lower half slot 212 second flange 12 second lower half slot 213 channel 218, 219 mounting groove 251 positioning cylinder inner wall front end 268 fixing groove 15c recess 16c convex portion 17c fixing hole.
  • a feature of the present invention is to be understood as one of the features of one embodiment of the present invention, and is not intended to suggest that each embodiment of the present invention must have the features described.
  • this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features are also applicable to other combinations not explicitly illustrated. Accordingly, the illustrated combinations are not intended to be limiting, unless otherwise indicated.
  • the indication of the direction (such as up, down, left, right, front and back) is used to explain the fact
  • the structure and motion of the various new components are not absolute but relative. These descriptions are suitable when the elements are in the positions shown in the figures. If the description of the position of these elements changes, the indications of these directions also change accordingly.
  • the optical fiber adapter 10 generally includes: a body 1, two optical fiber connectors 2, a fixed cover 3, and a fastener 6. .
  • the fixing cover 3 can lock the two fiber connector plugs 2 to the base body 1 by means of the fasteners 6.
  • the fiber optic adapter 10 is capable of simultaneously accommodating two fiber optic connectors 20 therein.
  • the fiber optic connector 20 is an LC fiber optic connector, and the ferrule 201 thereon can be inserted into the corresponding docking cavity 29 In order to achieve optical transmission docking between the two fiber optic connectors 2 and the two fiber optic connectors 20.
  • the seat body 1 is die cast from a zinc alloy.
  • the front portion of the base body 1 is provided with two receiving chambers 19 that are connected in front and rear.
  • a mounting seat 14 is provided at the rear of the base 1.
  • Each of the receiving chambers 19 is circumferentially closed and can accommodate a fiber optic connector 20.
  • the mounting seat 14 is provided with a first lower half slot 11 and a second lower half slot 12 that open upward.
  • the first lower half slot 11 is at a forward position
  • the second lower half slot 12 is at a rear of the first lower half slot 11 .
  • a locking protrusion 13 is formed on each of the two sides of the body 1.
  • the locking protrusion 13 is provided with a locking hole extending through the locking hole.
  • the base 1 can be locked to a carrier (not shown).
  • the carrier can be a circuit board.
  • the outer periphery of the base body 1 is provided with a recess 18, and a recessed conductive strip (not shown) is disposed in the recess 18. This structure allows the seat body 1 to be closely fitted and electrically connected to the opening (not shown) of the chassis panel, thereby improving the EMI (electromagnetic compatibility) performance of the fiber optic adapter 10.
  • the optical fiber connector plug 2 is an assembly member disposed on the mounting seat 14 and includes a positioning member 21 that is inserted and fixed from the rear to the front of the positioning member 21 .
  • the positioning cylinder 25 abuts against a rear cover 26 behind the ferrule 22, and a hose 27 that is wrapped around the outer circumference of the optical fiber 23.
  • the aforementioned docking chamber 29 is formed by enclosing the sleeve 24 and the ferrule 22.
  • the front end of the positioning cylinder 25 projects forwardly into the receiving cavity 19.
  • the docking cavity 29 communicates with the receiving cavity 19, and the ferrule 201 on the fiber connector 20 can be inserted into the docking cavity 29 of the corresponding fiber connector plug 2. Thereby, thereby accurately aligning with the optical fiber 23 on the ferrule 22.
  • the positioning member 21 is substantially in the shape of a hollow cylinder.
  • the middle portion of the positioning member 21 is formed with a passage 213 which allows the ferrule 22 to pass therethrough from the rear to the front.
  • a first flange 211 and a second flange 212 are respectively protruded from the front and rear ends of the positioning member 21 .
  • the front surface of the positioning member 21 is recessed with a mounting groove 219, and the rear end of the positioning cylinder 25 is embedded in the mounting groove 219.
  • the rear surface of the positioning member 21 is recessed with a mounting groove 218, and the front end of the rear cover 26 is embedded in the mounting groove 218.
  • the first flange 211 is a circular flange.
  • the second flange 212 is a square flange. Preferably, the second flange 212 is provided with rounded corners at four corners.
  • the ferrule 22 and the sleeve 24 are both made of ceramic material.
  • the front end of the sleeve 24 projects forwardly relative to the front end of the ferrule 22 to form a docking chamber 29, the positioning cylinder 25
  • the front end also protrudes forwardly relative to the front end of the sleeve 24, wherein the inner wall front end 251 of the positioning cylinder 25 is narrowed inwardly to prevent the sleeve 24 from coming forward.
  • a rear surface of the rear cover 26 is formed with a fixing groove 268, and a front end of the hose 27 is fitted in the fixing groove 268.
  • the front end of the optical fiber 23 is inserted into the ferrule 22, and the front end of the optical fiber 23 is flush with the front end of the ferrule 22.
  • the ferrule 22 is tightly inserted in the positioning member 21.
  • the rearward removal of the ferrule 22 is blocked by the back cover 26.
  • the hose 27 provides protection for the portion of the optical fiber 23 that projects rearwardly from the rear cover 26 to prevent the fine fiber 23 from being broken.
  • the fixing cover 3 is die-cast from a zinc alloy.
  • a fixing hole 39 is provided in the middle of the fixing cover 3 so as to be vertically penetrated, so that it can be locked to the seat body 1 by a fixing member 6 penetrating therein.
  • the bottom of the fixing cover 3 is provided with a first upper half slot 31 and a second upper half slot 32 which are open downward.
  • the first upper half card slot 31 and the first lower half card slot 11 on the base body 1 are combined to form a first card slot 4, and the second upper half card slot 32 and the first upper card slot 32 are
  • the second lower half card slot 12 is correspondingly combined to form the second card slot 5.
  • the first card slot 4 and the second card slot 5 respectively receive the first flange 211 and the second flange 212 of the fiber connector plug 2 .
  • the first flange 211 cooperates with the first card slot 4 to define the front and rear positions of the fiber connector plug 2; and the second flange 212 cooperates with the second card slot 5 to prevent the fiber connector 2 from occurring. Rotate.
  • the first flange 211 can abut against the rear surface of the first card slot 4 to prevent it from further retreating.
  • the circumference of the second flange 212 can be matched with the inner contour of the second card slot 5, so that the fiber connector plug 2 can be prevented from rotating.
  • the assembly process of the optical fiber adapter 10 of the present invention generally comprises: firstly manufacturing the base body 1, the fixed cover 3 and the optical fiber connector plug 2; and then mounting the two optical fiber connector plugs 2 to the mounting seat 14 of the base body 1, respectively. So that the first flange 211 and the second flange 212 respectively fall into the first lower half slot 11 and the second lower half slot 12; then, the fixing cover 3 is covered above the seat body 1, The first flange 211 and the second flange 212 are respectively dropped into the first upper half slot 31 and the second upper half slot 32; finally, the fixing cover 3 is fastened by a fastener 6 (for example, a screw) Locked to the seat body 1.
  • a fastener 6 for example, a screw
  • the utility model can lock two compact fiber optic connector plugs 2 to the seat body 1 by cleverly setting the mating seat body 1, the fiber connector plug 2 and the fixing cover 3. Between the fixed covers 3, the signals can be transmitted directly through the optical fibers 23 connected to the rear of the optical fiber connector 3, without the need to insert a longer and larger LC-type optical connector on the rear side of the optical fiber adapter 10, thereby shortening
  • the rear size saves space on the internal space of the chassis.
  • the difference between the optical fiber adapter 10a and the optical fiber adapter 10 is mainly as follows: four pairs of receiving cavities are formed on the base 1a of the optical fiber adapter 10a.
  • the fiber optic adapter 10a is capable of docking eight fiber optic connectors 20; in addition, the fiber optic adapter 10a has four fixed caps 3a.
  • Each of the fixing covers 3a is identical to the aforementioned fixing cover 3 for fixing a pair of optical fiber connectors 20, respectively.
  • the difference between the optical fiber adapter 10b and the optical fiber adapter 10 is mainly as follows: two pairs of receiving cavities are formed on the base 1b of the optical fiber adapter 10b. , Four fiber connector plugs 2b are provided, and the fiber adapters 10b can be connected to the four fiber connectors 20; in addition, the fiber adapters 10b have a fixing cover 3a which is different from the aforementioned fixing cover 3 in that There are four first card slots and four second card slots at the bottom, and can be engaged with the seat body 1a through the two fixing holes 39b and the two fasteners 6b penetrating therein.
  • FIG. 17, FIG. 18 and FIG. 19 show a fourth preferred embodiment of the optical fiber adapter of the present invention.
  • the difference between the optical fiber adapter 10c and the optical fiber adapter 10 is mainly as follows: the bottom of the base 1c is provided with two a fixing hole 17c, which replaces the locking hole on the two locking protrusions 13 on the seat body 1, and the seat body 1c can be locked to a load by the two fixing holes 17c.
  • a plate (not shown); in addition, one side of the seat body 1c is provided with a recess 15c, and the other side thereof is provided with a convex portion 16c corresponding to the recess 15c, so that a plurality of seats 1c can be realized. Match the alignment.
  • the fixing cover 3c is formed with only a first upper half slot 31c, which cooperates with the base body 1c to form a first card slot, and cooperates with a first flange (not shown) on the fiber connector 2c.
  • This fiber optic adapter 10c which is provided with only the first card slot, is advantageous for further shortening its overall length with respect to the fiber optic adapter 10 of the first embodiment of the present invention.
  • 19 shows the case of the mating alignment of the four fiber optic adapters 10c, such that the combined fiber optic adapter assembly can simultaneously interface the eight fiber optic connectors 20.
  • the fiber optic adapter 10c adopts a unit design, and can be used with a corresponding number of fiber optic adapters 10c according to the number of system fiber interfaces, which is very flexible in use and can reduce costs.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

一种光纤适配器（10），包括：一座体（1），其前部并列设有前后贯通且周向封闭的至少两收容腔（19），其后部设有一安装座（14）；至少两光纤接插头（2），每一光纤接插头（2）包括一定位件（21）、固定在定位件（21）并向前伸出的一插芯（22）、外露于该插芯（22）前端的一光纤（23）、贴合地套设在插芯（22）外周的一套管（24）以及进一步套设在套管（24）外周的一定位筒（25），定位筒（25）的前端向前伸入至收容腔（19），定位筒（25）的后端固定至定位件（21），定位件（21）的外周设有一第一凸缘（211）；以及至少一固定盖（3），锁固在该座体（1）的安装座（14）上方，其中固定盖（3）与安装座（14）组合形成有第一卡槽（4），第一卡槽（4）对应收容限位该光纤接插头（2）的第一凸缘（211）。该光纤适配器（10）能够缩短后部长度尺寸，节省对机箱内部空间的占用。

Description

光纤适配器 技术领域
本实用新型涉及一种光纤适配器，尤其涉及一种能够节省机箱内部空间占用的光纤适配器。
背景技术
中国专利CN201110196128.6公开了一种光纤适配器，包括本体、内壳体、盖板以及具有弹性的遮光件。本体具有轴向的容室，该容室由第一壁、第二壁、第三壁与第四壁界定形成，其中第一壁与第三壁相对并与第二壁及第四壁相连。本体的轴向的容室的两轴向端分别具有开口，第一壁上设有接取开口。内壳体设置在本体的轴向的容室内，该内壳体包括凸缘以及中空的圆柱体，该圆柱体由凸缘的正面延伸出。盖板覆盖在第一壁上的接取开口。遮光件设置在本体的容室内，该遮光件包括：位于第三壁上的水平部；延伸至中空圆柱体的开口前方的遮光部；与水平部及遮光部相连接的连接部；以及由水平部延伸出用于钩在凸缘上的卡钩部。现有的这种光纤适配器是通过在前后两侧各插接一个LC型光纤连接器来达到传输光信号的目的，其沿前后方向的总体尺寸较长，尤其是插接在光纤适配器后部的LC型光纤连接器需要在机箱内部占用较大的盘纤空间，不利于机箱的小型化趋势。可见，实有必要对其进行改进。
发明内容
本实用新型所要解决的技术问题在于克服上述现有技术所存在的不足，而提出一种光纤适配器，其能够缩短后部长度尺寸，节省对机箱内部空间的占用。
本实用新型针对上述技术问题提出一种光纤适配器，其适于收容至少两光纤连接器插接其内，该光纤适配器包括：
一座体，其前部并列设有前后贯通且周向封闭的至少两收容腔，其后部设有一安装座；
至少两光纤接插头，设置于该安装座上；每一光纤接插头包括一定位件、固定在该定位件并向前伸出的一插芯、外露于该插芯前端的一光纤、贴合地套设在该插芯外周的一套管以及进一步套设在该套管外周的一定位筒，该定位筒的前端向前伸入至该收容腔，该定位筒的后端固定至该定位件，该定位件的外周设有一第一凸缘；以及
至少一固定盖，锁固在该座体的安装座上方，其中该固定盖与该安装座组合形成有第一卡槽，该第一卡槽对应收容限位该光纤接插头的第一凸缘。
在一些实施例中，该定位件的外周还设有一第二凸缘；该固定盖与该安装座还组合形成有第二卡槽，该第一卡槽与该第二卡槽是前后间隔的，该第二卡槽对应收容限位该光纤接插头的第二凸缘。
在一些实施例中，该安装座设有向上开口的第一下半卡槽与第二下半卡槽，该固定盖 的底部设有向下开口的第一上半卡槽与第二上半卡槽；其中该第一下半卡槽与该第一上半卡槽对应组合形成该第一卡槽，该第二下半卡槽与该第二上半卡槽对应组合形成该第二卡槽。
在一些实施例中，该第一凸缘与该第一卡槽配合能够限定该光纤接插头的前后位置；而该第二凸缘与该第二卡槽配合能够防止该光纤接插头发生旋转。
在一些实施例中，该第一凸缘是圆形凸缘，其能够抵止于该第一卡槽的后表面；该第二凸缘是方形凸缘，该第二凸缘的周廓恰可与该第二卡槽的内廓相匹配。
在一些实施例中，该定位件大体呈中空筒状，该定位件的前表面凹设有一安装槽，该定位筒的后端固定在该安装槽内，该套管的前端相对该插芯的前端向前突伸，该定位筒的前端相对该套管的前端也向前突伸，其中该定位筒的内壁前端向内缩窄以防止套管向前脱出。
在一些实施例中，该定位件的中部形成有一个容许该插芯从后往前穿入其中的通道，该定位件的后表面凹设有一安装槽；该光纤接插头还包括抵靠在该插芯后方的一后盖，该后盖的前端固定在该安装槽内。
在一些实施例中，该光纤接插头还包括包覆在该光纤外周的一软管，该后盖的后表面形成有一固定槽，该软管的前端固定在该固定槽内。
在一些实施例中，该座体与该固定盖均是由锌合金压铸而成，该座体的外周设有一凹槽，该凹槽内设有一导电胶条。
在一些实施例中，该固定盖的中部上下贯穿地设置有固定孔，从而可以通过穿设在该固定孔内的固定件将其锁固至该座体。
在一些实施例中，该座体的两侧各向外突设有一锁固突部，该锁固突部上设有上下贯通的一锁固孔。
在一些实施例中，该座体上并列设有多对收容腔；该固定盖有多个，每个固定盖分别用于固定一对光纤接插头。
在一些实施例中，该座体的一侧设有一凹部，而另一侧对应设有与该凹部相匹配的一凸部。
在一些实施例中，该座体的底部设有至少一固定孔。
与现有技术相比，本实用新型通过巧妙地设置相互配合的座体、光纤接插头以及固定盖，可以将至少两个结构紧凑的光纤接插头锁固在该座体与该固定盖之间，直接通过连接至光纤插接头后部的光纤即可传输信号，无需在光纤适配器后侧对应插接一个较长较大的LC型光纤连接器，从而能够缩短后部尺寸，节省对机箱内部空间的占用。
附图说明
图1是本实用新型光纤适配器的较佳实施例与两光纤连接器的组合立体图。
图2是本实用新型光纤适配器的较佳实施例与两光纤连接器的分解立体图。
图3是本实用新型光纤适配器的较佳实施例与两光纤连接器的俯视图。
图4是图3中A-A向的剖视图。
图5是图4中C区域的局部放大图。
图6是本实用新型光纤适配器的较佳实施例的俯视图。
图7是图6中B-B向的剖视图。
图8是图6中D-D向的剖视图。
图9是本实用新型光纤适配器的较佳实施例与两光纤连接器的分解立体图。
图10是本实用新型光纤适配器的较佳实施例的分解立体图。
图11是本实用新型光纤适配器的较佳实施例的另一角度的分解立体图。
图12是本实用新型光纤适配器的较佳实施例中的光纤接插头的分解立体图。
图13是本实用新型光纤接插头在图12的基础进一步的分解立体图。
图14是本实用新型光纤接插头在图13的基础进一步的分解立体图。
图15是本实用新型光纤适配器的第二较佳实施例的立体图。
图16是本实用新型光纤适配器的第三较佳实施例的分解立体图。
图17是本实用新型光纤适配器的第四较佳实施例的立体图。
图18是本实用新型光纤适配器的第四较佳实施例的分解立体图。
图19是本实用新型光纤适配器的第四较佳实施例的组合应用立体图。
其中，附图标记说明如下：10、10a、10b、10c光纤适配器 20光纤连接器 201插芯 1、1a、1b、1c座体 2、2a、2b、2c光纤接插头 3、3a、3b、3c固定盖 4第一卡槽 5第二卡槽 6、6b紧固件 7锁固件 11第一下半卡槽 12第二下半卡槽 13锁固突部 14安装座 18凹槽 19收容腔 21定位件 22插芯 23光纤 24套管 25定位筒 26后盖 27软管 29对接腔 31、31c第一上半卡槽 32第二上半卡槽 39、39b固定孔 211第一凸缘 11第一下半卡槽 212第二凸缘 12第二下半卡槽 213通道 218、219安装槽 251定位筒的内壁前端 268固定槽 15c凹部 16c凸部 17c固定孔。
具体实施方式
尽管本实用新型可以容易地表现为不同形式的实施例，但在附图中示出并且在本说明书中将详细说明的仅仅是其中一些具体实施例，同时可以理解的是本说明书应视为是本实用新型原理的示范性说明，而并非旨在将本实用新型限制到在此所说明的那样。
由此，本说明书中所指出的一个特征将用于说明本实用新型的一个实施例的其中一个特征，而不是暗示本实用新型的每个实施例必须具有所说明的特征。此外，应当注意的是本说明书描述了许多特征。尽管某些特征可以组合在一起以示出可能的系统设计，但是这些特征也可用于其他的未明确说明的组合。由此，除非另有说明，所说明的组合并非旨在限制。
在附图所示的实施例中，方向的指示(诸如上、下、左、右、前和后)用于解释本实 用新型的各种元件的结构和运动不是绝对的而是相对的。当这些元件处于附图所示的位置时，这些说明是合适的。如果这些元件的位置的说明发生改变时，则这些方向的指示也相应地改变。
以下结合本说明书的附图，对本实用新型的较佳实施例予以进一步地详尽阐述。
参见图1至图14所示的本实用新型的光纤适配器的一较佳实施例，该光纤适配器10大致包括：一座体1，两个光纤接插头2，一固定盖3以及一紧固件6。该固定盖3借助该紧固件6能够将这两个光纤接插头2锁固在该座体1上。该光纤适配器10能够同时收容两个光纤连接器20插接其内，在本较佳实施例中，光纤连接器20为LC型光纤连接器，其上的插芯201能够插入对应的对接腔29中，从而实现这两个光纤接插头2与这两个光纤连接器20的光传输对接。
参见图5、图10和图11，该座体1是由锌合金压铸而成的。该座体1的前部并列地设有前后贯通的两个收容腔19。该座体1的后部设有一安装座14。每一收容腔19是周向封闭的，能够对应收容一光纤连接器20。该安装座14设有向上开口的一第一下半卡槽11与一第二下半卡槽12。其中，该第一下半卡槽11处于靠前的位置，而该第二下半卡槽12处于第一下半卡槽11的后方。该座体1的两侧各向外突设有一锁固突部13，该锁固突部13上设有上下贯通的一锁固孔，借助穿设于该锁固孔的一锁固件7，从而能够将该座体1锁固到一载板(图未示)，举例而言，该载板可以是一电路板。该座体1的外周设有一凹槽18，该凹槽18内设有一导电胶条(图未示)。这种结构，可以使该座体1与机箱面板的开口(图未示)紧密配合并良好地电性连接到一起，从而提高该光纤适配器10的EMI(电磁兼容)性能。
参见图5至图8以及图11至图14，该光纤接插头2为一组合件，设置于该安装座14上，其包括：一定位件21，从后向前插入固定在该定位件21上的一插芯22，外露于该插芯22前端的一光纤23，贴合地套设在该插芯22的外周的一套管24，间隙配合地套设在该套管24外周的一定位筒25，抵靠在该插芯22后方的一后盖26，以及包覆在该光纤23的外周的一软管27。其中，前述的对接腔29是由该套管24与该插芯22围合而成。该定位筒25的前端向前伸入至该收容腔19。当该光纤接插头2被锁固在该座体1上时，该对接腔29与该收容腔19连通，光纤连接器20上的插芯201能够插入对应的光纤接插头2上的对接腔29中，从而准确地与该插芯22上的光纤23对准。
该定位件21大体呈中空筒状。该定位件21的中部形成有一个恰可以容许该插芯22从后往前穿入其中的通道213。该定位件21的前后两端分别突设有一第一凸缘211与一第二凸缘212。该定位件21的前表面凹设有一安装槽219，该定位筒25的后端嵌固在该安装槽219中。该定位件21的后表面凹设有一安装槽218,该后盖26的前端嵌固在该安装槽218内。在本实施例中，该第一凸缘211是圆形凸缘。该第二凸缘212是方形凸缘。较佳地，该第二凸缘212在四个角上设有圆角。在本实施例中，该插芯22和该套管24均为陶瓷材质。该套管24的前端相对该插芯22的前端向前突伸以形成对接腔29，该定位筒25 的前端相对该套管24的前端也向前突伸，其中该定位筒25的内壁前端251向内缩窄以防止该套管24向前脱出。该后盖26的后表面形成有一固定槽268，该软管27的前端嵌固在该固定槽268内。该光纤23的前部插置在该插芯22中，该光纤23的前端与该插芯22的前端平齐。该插芯22紧密地插置在该定位件21中。该插芯22的向后脱出受阻于该后盖26。该软管27则能为光纤23向后伸出于后盖26的部分提供保护，防止纤细的光纤23被折断。
参见图5至图11，该固定盖3是由锌合金压铸而成的。该固定盖3的中部上下贯穿地设置有固定孔39，从而可以通过穿设其中的固定件6将其锁固至该座体1。该固定盖3的底部设有向下开口的第一上半卡槽31与第二上半卡槽32。其中，该第一上半卡槽31与该座体1上的第一下半卡槽11对应组合形成一第一卡槽4，该第二上半卡槽32与该座体1上的第二下半卡槽12对应组合形成该第二卡槽5。该第一卡槽4与该第二卡槽5分别对应收容限位该光纤接插头2的第一凸缘211与第二凸缘212。该第一凸缘211与该第一卡槽4相配合能够限定该光纤接插头2的前后位置；而该第二凸缘212与该第二卡槽5相配合能够防止该光纤接插头2发生旋转。在本实施例中，该第一凸缘211能够抵止于该第一卡槽4的后表面从而阻止其进一步后退。该第二凸缘212的周廓恰可与第二卡槽5的内廓相匹配，从而能够防止该光纤接插头2发生旋转。
本实用新型的光纤适配器10的装配过程大致包括：先制得该座体1、固定盖3和光纤接插头2；然后，将两个光纤接插头2分别装设到座体1的安装座14上，使得第一凸缘211和第二凸缘212分别落入到第一下半卡槽11和第二下半卡槽12中；然后，将该固定盖3盖设到该座体1上方，使得第一凸缘211和第二凸缘212分别落入到第一上半卡槽31和第二上半卡槽32中；最后，用紧固件6(例如：螺丝)将该固定盖3锁固到该座体1上。
与现有技术相比，本实用新型通过巧妙地设置相互配合的座体1、光纤接插头2以及固定盖3，可以将两个结构紧凑的光纤接插头2锁固在该座体1与该固定盖3之间，直接通过连接至光纤插接头3后部的光纤23即可传输信号，无需在光纤适配器10的后侧对应插接一个较长较大的LC型光纤连接器，从而能够缩短后部尺寸，节省对机箱内部空间的占用。
参见图15所示的本实用新型光纤适配器的第二较佳实施例，该光纤适配器10a与前述的光纤适配器10的区别主要体现在：该光纤适配器10a的座体1a上形成有四对收容腔，该光纤适配器10a能够对接八个光纤连接器20；另外，该光纤适配器10a具有四个固定盖3a。每个固定盖3a与前述的固定盖3相同，分别用于固定一对光纤接插头20。通过这种使用多个固定盖3a的设计，可以在收容腔数量发生变化时减少光纤适配器10a的开模成本。
参见图16所示的本实用新型光纤适配器的第三较佳实施例，该光纤适配器10b与前述的光纤适配器10的区别主要体现在：该光纤适配器10b的座体1b上形成有两对收容腔， 装设有四个光纤接插头2b，该光纤适配器10b能够对接四个光纤连接器20；另外，该光纤适配器10b具有一个固定盖3a，该固定盖3a与前述的固定盖3的区别在于，其下方设有四个第一卡槽与四个第二卡槽，并能够通过两个固定孔39b和穿设其中的两个紧固件6b与该座体1a配合。
图17、图18和图19所示的是本实用新型光纤适配器的第四较佳实施例，该光纤适配器10c与前述的光纤适配器10的区别主要体现在：该座体1c的底部设有两个固定孔17c，这两个固定孔17c替代了前述的座体1上的两个锁固突部13上的锁固孔，该座体1c能够借助这两个固定孔17c锁固到一载板(图未示)；另外，该座体1c的一侧设有一凹部15c，而其另一侧设有对应与该凹部15c相匹配的一凸部16c，从而能够实现多个座体1c的配合对位。再则，该固定盖3c上只形成有第一上半卡槽31c，其与座体1c配合形成第一卡槽，并与光纤接插头2c上的第一凸缘(图未示)配合，这种只设有第一卡槽的光纤适配器10c相对本发明的第一实施例光纤适配器10有利于进一步缩短其整体长度。其中，图19示出了四个光纤适配器10c的配合对位的情形，这样组合而成的光纤适配器组合能够同时对接八个光纤连接器20。这种光纤适配器10c采用单元式设计，可以根据系统光纤接口数量的需要搭配使用相应数量的光纤适配器10c，使用上非常灵活且可降低成本。
上述内容仅为本实用新型的较佳实施例，并非用于限制本实用新型的实施方案，本领域普通技术人员根据本实用新型的主要构思和精神，可以十分方便地进行相应的变通或修改，故本实用新型的保护范围应以权利要求书所要求的保护范围为准。

Claims (14)

  1. 一种光纤适配器，其适于收容至少两光纤连接器(20)插接其内，其特征在于，该光纤适配器包括：
    一座体(1)，其前部并列设有前后贯通且周向封闭的至少两收容腔(19)，其后部设有一安装座(14)；
    至少两光纤接插头(2)，设置于该安装座(14)上；每一光纤接插头(2)包括一定位件(21)、固定在该定位件(21)并向前伸出的一插芯(22)、外露于该插芯(22)前端的一光纤(23)、贴合地套设在该插芯(22)外周的一套管(24)以及进一步套设在该套管(24)外周的一定位筒(25)，该定位筒(25)的前端向前伸入至该收容腔(19)，该定位筒(25)的后端固定至该定位件(21)，该定位件(21)的外周设有一第一凸缘(211)；以及
    至少一固定盖(3)，锁固在该座体(1)的安装座(14)上方，其中该固定盖(3)与该安装座(14)组合形成有第一卡槽(4)，该第一卡槽(4)对应收容限位该光纤接插头(2)的第一凸缘(211)。
  2. 依据权利要求1所述的光纤适配器，其特征在于，该定位件(21)的外周还设有一第二凸缘(212)；该固定盖(3)与该安装座(14)还组合形成有第二卡槽(5)，该第一卡槽(4)与该第二卡槽(5)是前后间隔的，该第二卡槽(5)对应收容限位该光纤接插头(2)的第二凸缘(212)。
  3. 依据权利要求2所述的光纤适配器，其特征在于，该安装座(14)设有向上开口的第一下半卡槽(11)与第二下半卡槽(12)，该固定盖(3)的底部设有向下开口的第一上半卡槽(31)与第二上半卡槽(32)；其中该第一下半卡槽(11)与该第一上半卡槽(31)对应组合形成该第一卡槽(4)，该第二下半卡槽(12)与该第二上半卡槽(32)对应组合形成该第二卡槽(5)。
  4. 依据权利要求2所述的光纤适配器，其特征在于，该第一凸缘(211)与该第一卡槽(4)配合能够限定该光纤接插头(2)的前后位置；而该第二凸缘(212)与该第二卡槽(5)配合能够防止该光纤接插头(2)发生旋转。
  5. 依据权利要求4所述的光纤适配器，其特征在于，该第一凸缘(211)是圆形凸缘，其能够抵止于该第一卡槽(4)的后表面；该第二凸缘(212)是方形凸缘，该第二凸缘(212)的周廓恰可与该第二卡槽(5)的内廓相匹配。
  6. 依据权利要求1所述的光纤适配器，其特征在于，该定位件(21)大体呈中空筒状，该定位件(21)的前表面凹设有一安装槽(219)，该定位筒(25)的后端固定在该安装槽(219)内，该套管(24)的前端相对该插芯(22)的前端向前突伸，该定位筒(25)的前端相对该套管(24)的前端也向前突伸，其中该定位筒(25)的内壁前端(251)向内缩窄以防止该套管(24)向前脱出。
  7. 依据权利要求6所述的光纤适配器，其特征在于，该定位件(21)的中部形成有一 个容许该插芯(22)从后往前穿入其中的通道，该定位件(21)的后表面凹设有一安装槽(218)；该光纤接插头(2)还包括抵靠在该插芯(22)后方的一后盖(26)，该后盖(26)的前端固定在该安装槽(218)内。
  8. 依据权利要求7所述的光纤适配器，其特征在于，该光纤接插头(2)还包括包覆在该光纤(23)外周的一软管(27)，该后盖(26)的后表面形成有一固定槽(268)，该软管(27)的前端固定在该固定槽(268)内。
  9. 依据权利要求1所述的光纤适配器，其特征在于，该座体(1)与该固定盖(3)均是由锌合金压铸而成，该座体(1)的外周设有一凹槽(18)，该凹槽(18)内设有一导电胶条。
  10. 依据权利要求1至9任一项所述的光纤适配器，其特征在于，该固定盖(3)的中部上下贯穿地设置有固定孔(39)，从而可以通过穿设在该固定孔内的固定件(6)将其锁固至该座体(1)。
  11. 依据权利要求1至9任一项所述的光纤适配器，其特征在于，该座体(1)的两侧各向外突设有一锁固突部(13)，该锁固突部(13)上设有上下贯通的一锁固孔。
  12. 依据权利要求1至9任一项所述的光纤适配器，其特征在于，该座体(1a)上并列设有多对收容腔；该固定盖(3a)有多个，每个固定盖(3a)分别用于固定一对光纤接插头。
  13. 依据权利要求1至9任一项所述的光纤适配器，其特征在于，该座体(1c)的一侧设有一凹部(15c)，而其另一侧对应设有与该凹部(15c)相匹配的一凸部(16c)。
  14. 依据权利要求13所述的光纤适配器，其特征在于，该座体(1c)的底部设有至少一固定孔(17c)。
PCT/CN2017/072757 2016-02-01 2017-01-26 光纤适配器 WO2017133642A1 (zh)

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