CN201007747Y

CN201007747Y - Optical fiber connector

Info

Publication number: CN201007747Y
Application number: CNU2006201282561U
Authority: CN
Inventors: 冯晓梅; 李玉萍; 黄新格
Original assignee: HEBEI SIFANG TELECOMMUNICATION EQUIPMENT CO Ltd
Current assignee: HEBEI SIFANG TELECOMMUNICATION EQUIPMENT CO Ltd
Priority date: 2006-11-28
Filing date: 2006-11-28
Publication date: 2008-01-16
Anticipated expiration: 2016-11-28

Abstract

An optical fiber connecting device is composed of a plug and an optical cable. The left end of the plug is provided with a ceramic lock pin of which a tail block of the lock pin is sleeved on the outer side of the inner end. Fiber cores and central holes on the left end portion of the clad which are penetrated in the tail block of the lock pin and the lock pin are solidified mutually. A spiral flame-proof and protective sheath is entwined in the middle of the fiber cores and the clad and on the outer side of a plastic protecting sleeve. A straight sleeve barrel is sleeved on the outer side of the lock pin, the inner end of the straight sleeve barrel is sleeved on the outer side of the left end of a double threaded screw, and the outer side of the straight sleeve barrel is sleeved by a large sleeve barrel. The inner end of a plastic tail-sleeve is sleeved on the outboard of the double threaded screw, the outer end of the plastic tail-sleeve is sleeved on the outboard of PVC clad which is equipped as the outmost layer of the optical cable. An end with larger opening of a stepped postposition sleeve-barrel clamps a layer of silk-protective fur and a layer of knitting net of stainless steel inside a ring-shaped groove at the tail portion of the right end of the double threaded screw. A ring-shaped binding ring clamps the outer side of the PVC clad. The utility model of optical fiber connecting device has the advantages of strong stretching resistance, resistance to bending, and capability of repeated bending, and thereby the optical fiber connecting device increases efficiency and quality of construction, adapts for various hostile environments and makes work of arrangement of wire more flexible.

Description

A kind of joints of optical fibre

Technical field

The utility model relates to a kind of optical fiber transmission device, is exactly a kind of joints of optical fibre specifically.

Background technology

Development along with Fibre Optical Communication Technology, the joints of optical fibre have obtained widespread use as a kind of Optical Fiber Transmission interface unit, be mainly used in Optical CATV, LAN (Local Area Network), data network, various test and robot control system(RCS) etc., realized the flexible connection of optical fiber transmission device, bring convenience to construction, improved operating efficiency.The joints of optical fibre generally are made up of plug and optical cable (optical patchcord).In the prior art, the used optical cable of the joints of optical fibre that used optical cable of the joints of optical fibre that most production firms produce or operator use is ordinary optical cable, this ordinary optical cable protects hair+PVC crust by optical fiber+triumphant not wire drawing and constitutes, and optical cable and plug loose mail connected mode are the fastening and disposable crimping of STRTHD.The joints of optical fibre of being produced with above-mentioned connected mode with ordinary optical cable, in use there is following defective: optical fiber frangibility, easily destroyed, plug and optical cable connecting portion are not firm easily loosening or come off, and are not suitable for long-distance transmissions, put to no little inconvenience to construction.

Summary of the invention

The purpose of this utility model is at traditional joints of optical fibre frangibility, the easy destroyed and plug shortcoming of easily becoming flexible with the optical cable connecting portion or come off etc., a kind of compact conformation is provided, is connected firmly, the joints of optical fibre easy to use.

The technical solution that the utility model is taked is such.A kind of joints of optical fibre are made up of plug and optical cable.Wherein, the structure of optical cable is such: innermost layer is fibre core and covering, its skin scribbles one deck coat, it is one deck plastic sheath that hard-pressed bale coat, it is that batt is protected in triumphant not wire drawing that the outside hard-pressed bale of plastic sheath, and outwards one deck is a reelability stainless steel flexible hose layer again, strengthens the pliability of optical cable with it, follow its outside hard-pressed bale one deck stainless steel mesh grid screen layer, the outermost layer of optical cable is fire-retardant PVC crust.The connected mode of plug and optical cable is: the left end of plug is the cylindrical ceramic lock pin head that the center has pore; the big opening end of the cylindric lock pin tailstock of stepped appearance tightly is enclosed within the outside, inner end of cylindrical ceramic lock pin head; fibre core and covering left part are applied in the center pit of lock pin tailstock and cylindrical ceramic lock pin head and are solidified togather; middle part at fibre core and covering; the plastic sheath outer felt is wound with the spiral fashion flame-retardant sheath; be set with straight sleeve in the cylindrical ceramic lock pin head outside; the inner end of straight sleeve is sleeved on the left end outside of tubular double threaded screw and links together; in the cylindric lock pin tailstock of stepped appearance outer cover spring is housed; be set with big sleeve in the straight sleeve outside; the inner end of plastics tail cover is enclosed within the double threaded screw outside; the outer end of plastics tail cover is enclosed within the optical cable outermost layer PVC crust outside, and plug is connected the inner chamber part of mainly surrounding at plastics tail cover with the strong of optical cable.It is more firm for double threaded screw is connected with optical cable, have an annular groove in its tail surface, have an annular groove in double threaded screw right-hand member tail surface, be enclosed with silk successively in its outside and protect batt, stainless steel woven mesh layer, the big opening end of the rearmounted sleeve of stepped appearance with silk protect batt, the stainless steel woven mesh layer is clamped in the annular groove, avoided the not firm shortcoming of the parallel clamping of former annular knurl thread surface, the PVC crust is wrapped in the osculum end outside of the rearmounted sleeve of stepped appearance, and circumferential clasp is clamped in the PVC crust outside.

The outside that is positioned at the rear end PVC crust of plastics tail cover is with the A sign, and this A sign is the sign of difference two ends plug.

The technique effect that the utility model is obtained is: the joints of optical fibre are because have the stainless steel flexible hose layer as protection " armor "; it can strong submissive protection optical fiber; tension stress is strong; anti-side pressure; anti-bending; but repeated flex; mouse bite preventing; it can easily use as electric wire; so use of these joints of optical fibre; reduced the loss in the Workshop Production process; production rate and work efficiency have been improved; concerning the user, also reduce the loss in the work progress, improved operating efficiency, strengthened construction quality; compare with the traditional joints of optical fibre; its range of application is wider, and is applicable to various rugged surroundings, and installation work is become more nimbly and freely.

Description of drawings

Fig. 1 is a contour structures synoptic diagram of the present utility model.

Fig. 2 is vertical cut-away view of plug A and optical cable B coupling part among Fig. 1.

The implication of each label representative is among the figure: the A-plug, and the B-optical cable,

1, dust cap 2, ceramic insertion core head 3, straight sleeve 4, big sleeve 5, register pin 6, spring 7, lock pin tailstock 8, double threaded screw 9, PVC protective sleeve 10, rearmounted sleeve 11, snap ring 12, plastics tail cover 13, PVC crust 14, A sign 15, stainless steel mesh grid 16, stainless steel flexible hose 17, triumphant not wire drawing protect 18, plastic sheath 19, coat 20, fibre core and covering.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

As depicted in figs. 1 and 2, a kind of joints of optical fibre, it is made up of the plug A at optical cable B and two ends, and the two ends of optical cable B are fastened together with plug A respectively.As shown in Figure 2; the structure of optical cable B is such; fibre core and covering 20 are innermost layers of optical cable B; both can not separate for one; it also is the optical cable most important parts; it is the carrier of lightray propagation; the skin of fibre core and covering 20 scribbles transparent resin coat 19; it is enclosed in light in the fibre core; and protection fibre core; increase the physical strength of optical fiber; both combine fibre core and covering 20 and coat 19 and are referred to as naked fibre; coat 19 outsides are coated with one deck plastic sheath 18; fine naked fibre is encapsulated in the plastic sheath 18; make that it can be crooked and be unlikely to fracture; naked fibre and plastic sheath 18 combine and are referred to as optical fiber; plastic sheath 18 outside hard-pressed bales the triumphant not wire drawing of one deck and are protected hair 17; it is that one deck is along plastic sheath 18 vertical laies and continual protective seam that hair 17 is protected in triumphant not wire drawing; its pliability is very strong; make optical cable have the elasticity tension; hair 17 outside hard-pressed bale one deck reelability stainless steel flexible hose layers 16 are protected in triumphant not wire drawing; strengthen the pliability of optical cable with it; screen layer is done in the 16 outside hard-pressed bale one deck stainless steel mesh grid 15 of stainless steel flexible hose layer; optical cable has had this two-layer protection to protect fibre core; can strengthen the various tensions of optical cable greatly; resistance to compression equal strength, optical cable outermost layer are fire-retardant PVC crust 13.

Plug A takes following mode with being connected of optical cable B: fibre core and covering 20 fixedly to be plug be connected with the first step that optical cable is realized.The left end of plug A is the cylindrical ceramic lock pin head 2 that has pore, it is a kind of extra high accurate device made from zirconia ceramics material of concentricity, the inner end of the big opening end of the cylindric lock pin tailstock 7 of the stepped appearance of stainless steel and cylindrical ceramic lock pin head 2 is for being fastenedly connected, it and ceramic insertion core head 2 before use punching press connect as one and be referred to as ceramic insertion core, transparent plastic dust cap 1 is stamped in the outer end of ceramic insertion core head 2.The center pit blended rubber baking-curing that fibre core and covering 20 left ends are applied in lock pin tailstock 7 and ceramic insertion core head 2 together; optical fiber bends between stainless steel flexible hose 16 and lock pin tailstock 7 when preventing that the joints of optical fibre from reeling; cause decay to increase; middle part at fibre core and covering 20; plastic sheath 18 outer felt strengthen protection around one deck spiral fashion flame-proof PVC protective sleeve 9; be with metal straight sleeve 3 in ceramic insertion core head 2 outsides; the arc draw-in groove of a circle is outwards protruded in the middle part of straight sleeve 3; register pin 5 inlay cards are in draw-in groove; register pin 5 is ring-type devices that the one side of a copper material band opening leans out a spacer, and it inserts adapter and does location usefulness when the joints of optical fibre use.The inner of straight sleeve 3 is threaded with the left end of double threaded screw 8, double threaded screw 8 is not too round metal tubular devices of rule of an external form, its end surfaces is threaded, other end surface has the annular knurl screw thread, so be called double threaded screw, in lock pin tailstock 7 outer cover spring 6 is housed, when straight sleeve 3 is connected and fixed with double threaded screw 8, spring 6 is pressed between lock pin tailstock 7 and the double threaded screw 8, make ceramic insertion core have elasticity, help transmitting the tight contact that connects end face, be set with big sleeve 4 in straight sleeve 3 outsides, protrude a circle card platform near inner threaded one end of the big sleeve of metal, its card platform encloses little and after the protrusion draw-in groove of straight sleeve, so big sleeve just is blocked fixing.The inner of cylindrical plastic tail cover 12 is enclosed within double threaded screw 8 outsides, and the outer end of plastics tail cover 12 is enclosed within PVC crust 13 outsides.Plug A is connected main center section at plug A with the strong of optical cable B, i.e. the inner chamber parts of plastics tail cover 12 encirclements.It is more firm for optical cable is connected with plug, the position of double threaded screw 8 one end surfaces band annular knurl screw threads has an annular groove, wrap up the big opening end that hair 17, stainless steel mesh grid 15 and the rearmounted sleeve 10 of stepped appearance are protected in triumphant not wire drawing successively in its outside, the big opening end of the rearmounted sleeve 10 of stepped appearance with silk protect batt 17, stainless steel mesh grid 15 is clamped in the annular groove, PVC crust 13 is wrapped in the osculum end outside of the rearmounted sleeve 10 of stepped appearance, and circumferential clasp 11 is clamped in PVC crust 13 in the osculum end outside of the rearmounted sleeve 10 of stepped appearance.Triumphant not wire drawing is protected hair 17 and is wrapped in double threaded screw 8 when having an end of groove with stainless steel mesh grid 15, because the position bore that is wrapped is bigger, so just make both expand outwardly parallel surface shape former at an angle with it, this groove can make clamped three all form an angle with the groove limit, the increase three is in contact with it the friction enhanced of face and fixes, and has avoided former annular knurl thread surface parallel surface to clamp unstable shortcoming; Rearmounted sleeve 10 is a metal stepped appearance tubular device, PVC crust 13 is wrapped in its osculum end outside, PVC crust 13 outside set metal circumferential clasps 11, both are clamped at the osculum end outside of rearmounted sleeve 10 together, because the position bore of PVC crust parcel is bigger, so it is expanded outwardly and former parallel surface shape (as shown in Figure 2) at an angle, has so just realized that plug A is connected with the last of optical cable B.Be with the A sign 14 of ring-shaped P VC material in the outside that the plastics tail overlaps 12 rear end faces, PVC crust 13, it is the sign at difference plug two ends.

Claims

1. joints of optical fibre, it is made up of plug (A) and optical cable (B), and plug (A) and optical cable (B) are fastened together, and it is characterized in that:

1) innermost layer of optical cable (B) is fibre core and covering (20), the skin of fibre core and covering (20) scribbles coat (19), coat (19) outside is coated with plastic sheath (18), plastic sheath (18) outside is surrounded by silk and protects batt (17), silk protects batt (17) outside and is surrounded by stainless steel flexible hose layer (16), stainless steel flexible hose layer (16) outside is surrounded by stainless steel mesh grid (15), and outermost layer is PVC crust (13);

2) connected mode of plug (A) and optical cable (B) is: the left end of plug (A) is the cylindrical ceramic lock pin head (2) that the center has pore; the big opening end of the cylindric lock pin tailstock of stepped appearance (7) tightly is enclosed within the outside, inner end of cylindrical ceramic lock pin head (2); fibre core and covering (20) left part is applied in the center pit of lock pin tailstock (7) and cylindrical ceramic lock pin head (2) and is solidified togather; middle part at fibre core and covering (20); plastic sheath (18) outer felt is wound with spiral fashion flame-retardant sheath (9); be set with straight sleeve (3) in cylindrical ceramic lock pin head (2) outside; the inner end of straight sleeve (3) is sleeved on the left end outside of tubular double threaded screw (8) and is threaded togather; in the cylindric lock pin tailstock of stepped appearance (7) outer cover spring (6) is housed; be set with big sleeve (4) in straight sleeve (3) outside; the inner end of plastics tail cover (12) is enclosed within double threaded screw (8) outside; the outer end of plastics tail cover (12) is enclosed within optical cable outermost layer PVC crust (13) outside; have an annular groove in double threaded screw (8) right-hand member tail surface; be enclosed with silk successively in its outside and protect batt (17); stainless steel mesh grid (15); the big opening end of the rearmounted sleeve of stepped appearance (10) protects silk from batt (17); stainless steel mesh grid (15) is clamped in the annular groove; PVC crust (13) is wrapped in the osculum end outside of the rearmounted sleeve of stepped appearance (10), and circumferential clasp (11) is clamped in PVC crust (13) in the osculum end outside of the rearmounted sleeve of stepped appearance (10).

2. by the described joints of optical fibre of claim 1, it is characterized in that cylindrical ceramic lock pin head (2) outer end is with dust cap (1).

3. by the described joints of optical fibre of claim 1, it is characterized in that the outside of the rear end PVC crust (13) of plastics tail cover (12) is with A sign (14).