CN202563127U

CN202563127U - Sc optical fiber quick connector

Info

Publication number: CN202563127U
Application number: CN2012200645224U
Authority: CN
Inventors: 沈继茂
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-23
Filing date: 2012-02-23
Publication date: 2012-11-28
Anticipated expiration: 2022-02-23

Abstract

An SC optical fiber quick connector comprises a housing, a sleeve casing and a tail casing. The housing comprises a front portion and a rear portion. An external thread is provided between the front portion and the rear portion. The tail casing is connected with the external thread through an internal thread. A guide slot which is communicated with a channel and exposes a sleeve barrel is provided on an upper surface of the front portion. A locating slot is provided on the sleeve barrel. A metal clip is inserted into the locating slot. A hole for fixing a pre-buried optical fiber is provided in the metal clip. A pressing cover which covers the metal clip and fills a gap between the metal clip and the locating slot is inserted into the locating slot. The locating slot and the pressing cover are exposed from the guide slot. According to the optical fiber connector, the metal clip is used to fix the optical fiber, so that the optical fiber is not easy to move and has a longer service life, and the structure of the hole in the metal clip for fixing the optical fiber makes the optical fiber not easy to fall out. The optical fiber connector has a simple and compact structure, the optical fiber is firmly fixed, and the optical fiber connector is convenient for the quick and accurate field installation, is accurate in the alignment, and is conducive to the signal transmission.

Description

The SC optical fiber quick connector

Technical field

The utility model relates to a kind of joints of optical fibre, particularly relates to a kind of optical fiber quick connector.

Background technology

Along with the continuous development of optical communication technique, the user's request bandwidth is increasingly high, optical fiber register one's residence (FTTH) become the inexorable trend of development.Confirm that with the length of optical cable is very difficult optical cable two terminal adapters must be made at the scene because of registering one's residence, the quick termination in working-yard has just become requisite construction method.The quick termination mode of existing optical cable has two kinds, and first kind is to adopt optical fiber matching fluid, and the ceramic insertion core preformed fibers directly docks with optical cable and optical fibres; Its shortcoming is the matching fluid limited service life; Be not suitable for long-term connection, the another kind of fiber cut insertion ceramic insertion core that adopts is directly fixing, and the method is difficult to reach consistance because of cutting end face and length; Cause quality of connection unstable easily, transmission signals loss etc.

The existing joints of optical fibre generally comprise ceramic contact pin, elastic parts, shell; Ceramic contact pin is anchored on the front end of shell by elastic parts; After being adhesively fixed in the core hole of optical fiber insertion ceramic contact pin; The assembling external component is connected as long as the joints of optical fibre that assemble are inserted the light and the optical fiber in the adapter that make in the corresponding adapter in the connector.Like Chinese patent CN201060292Y disclosed a kind of " on-site quickly-assembling optical fiber connector "; The tailstock that comprises lock pin, neck bush, external bushing, tail cover and internal run-through; This tailstock is made up of the upper and lower seat shell of snapping, and lock pin is the composite core insert that has the optical fiber of preset length, and this composite core insert contains ceramic insertion core head and sleeve; Establish shoulder hole in the sleeve; The tail end of ceramic insertion core head tightly is plugged in the sleeve, and one of said optical fiber is positioned at the hole of taking out of ceramic insertion core head, and optical fiber end grinds moulding; Sleeve presses in said tailstock, and composite core insert, tailstock and spring are loaded in the neck bush, connects the block piece of tail cover at neck bush afterbody snapping.This existing joints of optical fibre element is more, and production cost is also higher, complex structure, and operating process is also relatively loaded down with trivial details.But along with the continuous development, particularly high-speed local area network of Fibre Optical Communication Technology and the development of optical access network, the optical fiber field erection joint has been inevitable work, and baroque like this fibre-optic connector structure is too complicated,, be unfavorable for on-the-spot the installation.

Summary of the invention

The utility model technical matters to be solved provide a kind of simple in structure, install quick and conveniently, and connect stable SC optical fiber quick connector.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of SC optical fiber quick connector, and the sheath body and the tail shell that comprise housing and be placed in hull outside, said housing comprises front portion and rear portion; Have external thread between the said front and rear, said tail shell is connected with this external thread through the internal thread that is positioned at its inside surface, and said sheath body is placed in the outside of the front portion of said housing; Have in the said housing along ccontaining sleeve of the passage of its length direction and spring; Have gathering sill on the upper surface of said front portion and be communicated with said passage and expose said sleeve, the head of said sleeve is inserted with ceramic insertion core, and the afterbody of said sleeve is with spring; And has the through hole that supplies optical fiber to pass through in the said sleeve; It is characterized in that: said sleeve inserts the front portion that is positioned at said housing, has a locating slot on the said sleeve, and a metal clip is inserted in the said locating slot; The hole that has fixing pre-buried optical fiber on this metal clip; And this hole is communicated with through hole, also is inserted with a gland on the said locating slot and is covered on the metal clip and the gap between filling metal clip and the locating slot, and said locating slot and said gland expose from said gathering sill.

For locate said sleeve in housing the position and be convenient to install; The tail end of said sleeve has the outstanding flange face of a circle; Have the inwardly outstanding protruding circle of a circle in the passage of said housing, also have a step surface between the front portion of said sleeve and the afterbody, an end of said spring is butted on said step surface; The other end of said spring is butted on the front end face of said protruding circle, and the flange face of said sleeve tail end is butted on the rear end face of said protruding circle.

In order to prevent that optical fiber is deviate from the metal clip assembling from metal clip; Said metal clip is connected as a single entity by two and folding each other thin slice forms; And on the relative face of said two plate sheets; Wherein to be formed with the cross section be leg-of-mutton groove to a plate sheet; It is semicircular groove that another sheet is formed with the cross section, and said two grooves are corresponding to be provided with and to form the hole that supplies optical fiber to pass through, and this cross section is that the base size of leg-of-mutton groove is the diameter dimension of semicircular groove greater than said cross section.

For stationary gland better, the both sides of said gland have fixture block, have detent on the medial surface of said locating slot, and said fixture block is stuck in the said gland of said detent internal fixation.

Preferably, the lateral surface of said sheath body has breach, and the outside of said housing has outwards outstanding projection, and this projection engages with this breach each other.

Compared with prior art, the advantage of the utility model is this joints of optical fibre, not only uses metal clip to fix optical fiber; Make optical fiber be difficult for moving, longer service life, and also the structure in the hole of this metal clip internal fixation optical fiber makes optical fiber be difficult for deviating from; These joints of optical fibre are not only simple in structure, compact, and optical fiber is fixed, and assemble rapidly and accurately at the scene that is easy to; Aim at accurately, be beneficial to the transmission of signal.

Description of drawings

Fig. 1 is the schematic perspective view of the utility model SC optical fiber quick connector.

Fig. 2 is the cut-open view along A-A line among Fig. 1.

Fig. 3 is the exploded view of the utility model SC optical fiber quick connector.

Fig. 4 is the schematic perspective view of the metal clip of the utility model joints of optical fibre.

Fig. 5 is the cut-open view along B-B line among Fig. 4.

Fig. 6 is the schematic perspective view of the gland of the utility model joints of optical fibre.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

The SC optical fiber quick connector of the utility model, shown in Fig. 1-6, the sheath body 2 and tail shell 4 that comprise housing 1 and be placed in housing 1 outside,, having a passage 15 along housing 1 length direction in the housing 1, the front side of said passage 15 is equipped with sleeve 3.Said housing 1 is divided into front portion 11 and rear portion 12, and has external thread 13 between front portion 11 and the rear portion 12, and this rear portion 12 is anchor clamps, is used to clamp extraneous optical cable.Have a gathering sill 14 on said anterior 11, this gathering sill 14 exposes said passage 15, and then exposes the sleeve 3 in the passage 15.Tail shell 4 is connected with the external thread 13 of housing 1 through the internal thread that is positioned at its inside surface, and when being threaded, and makes the extraneous optical cable of clamp at housing 1 rear portion.Said sheath body 2 is placed in 11 outsides, front portion of said housing 1.The lateral surface of sheath body 2 has breach 21, and the outside of housing 1 has outwards outstanding projection 16, and this projection 16 and this breach 21 engage with fixedly sheath body 2 and housing 1 each other.

Have the through hole that supplies pre-buried optical fiber 10 and extraneous optical fiber to pass in the said sleeve 3, and the front end of sleeve 3 is inserted with ceramic insertion core 8, has the extraneous optical fiber that pre-buried optical fiber 10 and back inserts connector in the ceramic insertion core 8 and connect.And the center section of this sleeve 3 has a locating slot 31 and exposes the through hole in this sleeve 3, because the gap of external diameter forms a step surface 32, the tail end of sleeve 3 also has the outwards outstanding flange face 33 of a circle between the middle part of this sleeve 3 and the afterbody.Has an inside outstanding protruding circle 121 in the passage 15 of housing 1; As shown in Figure 2; Said sleeve 3 places in this housing 1, and the afterbody of sleeve 3 also is with a spring 5, and the two ends of spring 5 are butted on the front end face of protruding circle 121 of step surface 32 and the housing 1 of sleeve 3; And the flange face 33 of the tail end of this sleeve 3 is stuck in the rear end face of this protruding circle 121, with this sleeve 3 is fixed in the housing 1.

Be inserted with metal clip 6 in this locating slot 31, also have in the metal clip 6 with sleeve 3 in the hole 61 passed of the pre-buried optical fiber 10 of confession that is complementary of through holes, this hole 61 is along the length direction setting of said metal clip 6.The structure of this metal clip 6 sees Fig. 4, shown in 5, this metal clip 6 is folded to form by the sheet metal of two continuous one each other, and on the relative face of two plate sheets; It is leg-of-mutton groove 62 that one of them thin slice has the cross section; It is semicircular groove 63 that another thin slice has a cross section, and this cross section is that leg-of-mutton groove 62 is semicircular groove 63 with the cross section, these two corresponding settings of groove; Merge and get up to form hole 61, and said hole 61 is connected with said sleeve 3 interior through holes.This cross section is the diameter of the base length of leg-of-mutton groove 62 greater than semicircular groove 63; The such hole 61 and the structure of metal clip 6; Make and to fix pre-buried optical fiber 10 and the extraneous optical fiber that is connected with pre-buried optical fiber 10 that inserts when folding up behind the metal clip 6 better, prevent that optical fiber from deviating from from metal clip 6.After metal clip 6 was put into the locating slot 31 of sleeve 3, gland 7 was inserted in the gap between the side of filling up metal clip 6 and locating slot 31 in the locating slot 31, and fixing metal folder 6 prevents metal clip 6 double swerves and then prevents fibre movement.The structure of gland 7 is as shown in Figure 8; Gland 7 is covered in the top of said derby 6; And the both sides of briquetting 7 are stuck between derby 6 and the locating slot 31; The side of gland 7 has outstanding fixture block 71, and the medial surface of locating slot 31 has corresponding detent 311, and this detent 311 fixes with fixture block 71 and locatees gland 7.Adopting metal clip 6 direct fixed fibers, is because the expansion coefficient that metal material is heated etc. are all approaching with optical fiber, compares to fix optical fiber with plastic material in the prior art, and its reliability of fixation is higher, and longer service life.The extraneous optical fiber that inserts just docks in the hole 61 of this metal clip 6 with pre-buried optical fiber 10 and is connected.

And front end ceramic insertion core 8 outsides of the housing 1 of these joints of optical fibre also are inserted with protective sleeve 9, make the joints of optical fibre protect ceramic insertion core before use better.

These joints of optical fibre not only use metal clip to fix optical fiber, make optical fiber be difficult for moving; Longer service life, and the structure in the hole of this metal clip internal fixation optical fiber makes optical fiber be difficult for deviating from, and these joints of optical fibre are not only simple in structure, compact; And optical fiber is fixed; Assemble rapidly and accurately at the scene that is easy to, and aims at accurately, is beneficial to the transmission of signal.

Claims

1. SC optical fiber quick connector; The sheath body (2) and the tail shell (4) that comprise housing (1) and be placed in housing (1) outside; Said housing (1) comprises front portion (11) and rear portion (12); Have external thread (13) between said front portion (11) and rear portion (12), said tail shell (4) is connected with this external thread (13) through the internal thread that is positioned at its inside surface, and said sheath body (2) is placed in the outside of the front portion (11) of said housing (1); Have ccontaining sleeve of passage (15) (3) and spring (5) in the said housing (1) along its length direction; Have gathering sill (14) on the upper surface of said front portion (11) and be communicated with said passage (15) and expose said sleeve (3), the head of said sleeve (3) is inserted with ceramic insertion core (8), and the afterbody (32) of said sleeve (3) is with spring (5); And has the through hole that supplies optical fiber to pass through in the said sleeve (3); It is characterized in that: said sleeve (3) inserts the front portion (11) that is positioned at said housing (1), has a locating slot (31) on the said sleeve (3), and a metal clip (6) is inserted in the said locating slot (31); The hole (61) that has fixing pre-buried optical fiber (10) on this metal clip (6); And this hole (61) are communicated with through hole, also are inserted with a gland (7) on the said locating slot (31) and are covered on the metal clip (6) and the gap between filling metal clip (6) and the locating slot (31), and said locating slot (31) and said gland (7) expose from said gathering sill (14).

2. SC optical fiber quick connector as claimed in claim 1; It is characterized in that: the tail end of said sleeve (3) has the outstanding flange face (33) of a circle; Has the inwardly outstanding protruding circle (121) of a circle in the passage (15) of said housing (1); Also has a step surface (32) between the front portion of said sleeve (3) and the afterbody; One end of said spring (5) is butted on said step surface (32), and the other end of said spring (5) is butted on the front end face of said protruding circle (17), and the flange face (33) of said sleeve (3) tail end is butted on the rear end face of said protruding circle (17).

3. SC optical fiber quick connector as claimed in claim 1; It is characterized in that: said metal clip (6) is connected as a single entity by two and folding each other thin slice forms; And on the relative face of said two plate sheets; Wherein to be formed with the cross section be leg-of-mutton groove (62) to a plate sheet; It is semicircular groove (63) that another sheet is formed with the cross section, and said two grooves are corresponding to be provided with and to form the hole (61) that supplies optical fiber (10) to pass through, and this cross section is that the base size of leg-of-mutton groove (62) is the diameter dimension of semicircular groove (63) greater than said cross section.

4. SC optical fiber quick connector as claimed in claim 1; It is characterized in that: the both sides of said gland (7) have fixture block (71); Have detent on the medial surface of said locating slot (31), said fixture block (71) is stuck in the said gland of said detent internal fixation (7).

5. SC optical fiber quick connector as claimed in claim 1 is characterized in that: the lateral surface of said sheath body (2) has breach (21), and the outside of said housing (1) has outwards outstanding projection (16), and this projection (16) engages with this breach (21) each other.