CN1325949C

CN1325949C - Optical fiber connector

Info

Publication number: CN1325949C
Application number: CNB2003101047651A
Authority: CN
Inventors: 王坤生
Original assignee: Lite On Technology Corp
Current assignee: Lite On Technology Changzhou Co Ltd; Lite On Technology Corp
Priority date: 2003-10-31
Filing date: 2003-10-31
Publication date: 2007-07-11
Anticipated expiration: 2023-10-31
Also published as: CN1611972A

Abstract

The present invention relates to an optical fiber connector which is applied to optical fiber splices. The optical fiber connector comprises a main body and a U-shaped cover cap covering the main body, wherein clamping grooves are arranged on an upper end edge and a lower end edge on both right and left sides of the main body, and the U-shaped cover cap comprises a jack part, and a right lateral plate and a left lateral plate which are connected with jack part. The jack part is provided with a dust cap integrally formed extending downwards from the top edge of the jack part, and the two lateral plates have butt-joint surfaces tightly matched with the clamping grooves along the upper end edge and the lower end edge. The optical fiber connector of the present invention can be rotationally opened and has the advantage of simple and firm structure; the optical fiber connector also has the advantages of improving assembling and testing efficiency, reducing cost and achieving the function of preventing dust and foreign substances. The present invention can ensure correct assembling because of a mistake-proof design; the present invention not only can limit the insert depth of the optical fiber splices, but also can reinforce the alignment among the optical fiber splices and luminous or light receiving assemblies.

Description

The joints of optical fibre

Technical field

The present invention relates to a kind of joints of optical fibre, particularly a kind of joints of optical fibre that are applied to optical information is coupled to optical fiber.

Background technology

Along with optical-fibre communications is growing, the demand of the joints of optical fibre also constantly increases, usually be equiped with optical assembly in the joints of optical fibre, for avoiding dust or foreign matter to influence the optical property of optical assembly, and the light signal of avoiding optical assembly to produce directly penetrates operator's eyes damaged, and needs to cooperate the inlet of these joints of optical fibre of sealing.

Please refer to Fig. 1, be the joints of optical fibre 1a of first known technology, it adopts dust plug 12a structure to realize above-mentioned purpose, when it does not dock with other optical device at connector body 11a, assemble this dust plug 12a in the optic fibre patchhole of this connector body 11a, to reach the effect of this optic fibre patchhole of sealing, avoid dust and foreign body intrusion.But described this dust plug of this first known technology 12a must be provided with handle so that choose, with regard to the shape of this dust plug 12a, cause profile excessive because this handle is outstanding, and when these optical device such as butt joint fiber optic cables, must take this dust plug 12a apart.Therefore, when connector body 11a docks with other optical device, must keep properly this dust plug 12a that pulls down, in order to installing once more, if the not careful site of storage that selects, the danger that may cause loss or child to eat by mistake.In addition,, must pull down this dust plug 12a earlier and could check, then must load onto ability shipment behind this dust plug 12a again again carrying the light emission or receiving in the test procedure of electronic installation of semiconductor subassembly.Thus, not only the process of loading and unloading is loaded down with trivial details and increase the cost of assembling test on reality is utilized for this dust plug 12a.

Please refer to Fig. 2 A and Fig. 2 B, be the laterally opened joints of optical fibre 2a of second known technology, it has support spring 23a in connector body 21a, this spring 23a supports to arrive in the back side of shield 24a and the medial surface of this connector body 21a, this shield 24a is equipped with an axial region 22a as turning axle, be fixedly arranged on this connector body 21a with another fixed support, along with the insertion of fibre-optical splice 6a or extract, be used for rotarily opening automatically or closing.That is, when connector body 11a did not dock with other optical device, this shield 24a closed optic fibre patchhole; When desire was inserted this fibre-optical splice 6a, this fibre-optical splice 6a withstood this shield 24a and is turning axle and after this medial surface rotation of introversive this connector body 21a with above-mentioned this axial region 22a, opens this shield 24a; After extracting this fibre-optical splice 6a, by the restoring force (elastic force) of this spring 23a, this shield 24a is closed to original state automatically.

Generally speaking, this fibre-optical splice 6a can be provided with a pair of semicircle fillet portion of guiding usefulness in its outer rim, cooperates the guide channel of being located in this optic fibre patchhole, guides this fibre-optical splice 6a and inserts smoothly.But, these joints of optical fibre 2a of second known technology carries out the side with this shield 24a to open (horizontal type unlatching), and this guide channel is set on this shield 24a and seals the jut of this one-sided guide channel, when this fibre-optical splice 6a inserts can according to the unlatching of this shield 24a and take in to this optic fibre patchhole inboard and make this shield 24a form this one-sided guide channel so that this fibre-optical splice 6a enters in this optic fibre patchhole smoothly.But because this shield 24a invests on this fixed support with small this axial region 22a, link with this connector body 21a and this spring 23a by this fixed support again, so this guide channel that is formed by this shield 24a is to the stationarity of this fibre-optical splice 6a, will because of itself activity and link each assembly after the combined tolerances increase reduce; In addition, the buffer substrate tablet 25a that has in described this optic fibre patchhole of these joints of optical fibre 2a of second known technology only can be to the effect of the one-sided generation controlling depth of this fibre-optical splice 6a, and the stationarity that produces this one-sided guide channel owing to this shield 24a is bad, will weaken the limitation function of this buffer substrate tablet 25a.

Please refer to Fig. 3 A and Fig. 3 B, be the last open type joints of optical fibre 3a of the 3rd known technology, it is equipped with an axial region 32a as turning axle, has pair of brackets spring 33a in connector body 31a, each front of this spring 33a all connects the back side of shield 34a and the interior top of this connector body 31a, along with the insertion of this fibre-optical splice 6a or extract, this shield 34a rotarily opens automatically or closes.In other words, in the non-use age, this shield 34a closes this optic fibre patchhole in the mode of the medial surface of this connector body of butt 31a; When desire was inserted this fibre-optical splice 6a, this fibre-optical splice 6a withstood this shield 34a and is turning axle and after the inner rotation of this connector body 31a with above-mentioned this axial region 32a, opens this shield 34a; After extracting this fibre-optical splice 6a, by the restoring force (elastic force) of this spring 33a, this shield 34a is closed to original state automatically.

But, when inserting this fibre-optical splice 6a, to increase the weight of the load of this axial region 32a, may cause this axial region 32a impaired, and, must adopt the robust material of hard metal system to constitute this axial region 32a and increase material cost for avoiding this axial region 32a impaired because of above-mentioned burden, metal this axial region 32a installs this spring 33a in the mode that runs through, and must be embedded on this shield 34a, to finish the shield assembly of setting up this spring 33a, therefore not only time-consuming but also require great effort in assembling.

Please refer to shown in Figure 4, be the last open type joints of optical fibre 4a of the 4th known technology, it is equipped with a leaf spring 43a, has the shield 44a of an axial region 42a in connector body 41a, these joints of optical fibre 3a with the 3rd known technology, along with the insertion of this fibre-optical splice 6a or extract, this shield 44a rotates up to open or close automatically.But this leaf spring 43a (with the 3rd known) also reduces its life-span because of the load that the insertion of this Optical fiber plug 6a increases the weight of this axial region 42a.

Please refer to Fig. 5, be the bottom-open type joints of optical fibre 5a of the 5th known technology, it is as elasticity shield 54a with an elastic body in connector body 51a, be conigenous the moving restoring force that closes to original state with the elastomeric products that this elasticity shield 54a itself has, along with the insertion of this fibre-optical splice 6a or extract, this elasticity shield 54a opens or closes after swing-in rotates automatically.These joints of optical fibre 5a is with the sealing guide channel with the area that increases this elasticity shield 54a, this guide channel can't extend to form along the rear direction of this optic fibre patchhole, can only near the inlet of this optic fibre patchhole, form, make that this fibre-optical splice 6a can't be according to the guiding of this guide channel and firmly insert, and can't reach good light with this optical assembly and combine; Wherein, this elasticity shield 54a will be because of bending along with this fibre-optical splice 6a enters, and it is easy to generate elastic fatigue in the bending place, and can't reply closed condition and lose effect.

Simultaneously, above-mentioned the 3rd known technology, the 4th known technology, and the 5th known technology all can't limit the insertion depth of this fibre-optical splice 6a, may make the surface of fiber end face and this optical assembly produce contact friction, and cause scratch to produce and the defeated light signal strength of reduction institute tendency to develop, and then influence system's erroneous judgement signal.

Summary of the invention

Fundamental purpose of the present invention is to provide a kind of joints of optical fibre, and it is rotary unlatching, the number of assembling steps complexity of avoiding the separate type dust cap to be caused, conveniently use and test, the danger of avoiding children to eat by mistake, its simple structure, firm can improve assembling and testing efficiency and reduces cost.

Of the present invention time a purpose is to provide a kind of joints of optical fibre, can reach the function of dustproof, anti-foreign matter.

Another purpose of the present invention is to provide a kind of joints of optical fibre, has the fool proof design, guarantees that assembling is correct.

Another object of the present invention is to provide a kind of joints of optical fibre, can limit the insertion depth of this fibre-optical splice.

A continuous purpose of the present invention is to provide a kind of joints of optical fibre, can strengthen aiming between fibre-optical splice and luminous or light-receiving module.

In order to achieve the above object, the invention provides a kind of joints of optical fibre, it is applied to fibre-optical splice, and these joints of optical fibre comprise main body, reach the U type cover cap that covers this main body; Wherein, the ora terminalis up and down of the left and right sides of this main body is provided with draw-in groove, this U type cover cap comprises socket portion, reaches the left and right sides plate of this socket portion of connection, this socket portion has by its apical margin extends integrated dust cap downwards, and the ora terminalis up and down of described biside plate has the bearing surface of this draw-in groove that closely cooperates.

The advantage of the joints of optical fibre of the present invention is simple structures, firm, can improve assembling and testing efficiency and reduces cost; Can reach the function of dustproof, anti-foreign matter; Have the fool proof design, guarantee that assembling is correct; Can limit the insertion depth of this fibre-optical splice; Can strengthen aiming between fibre-optical splice and luminous or light-receiving module.

In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet described accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the present invention is limited.

Description of drawings

Fig. 1 is the application synoptic diagram of the first known joints of optical fibre;

Fig. 2 A is the synoptic diagram of the second known joints of optical fibre;

Fig. 2 B is the application synoptic diagram of the second known joints of optical fibre;

Fig. 3 A is the synoptic diagram of the 3rd known joints of optical fibre;

Fig. 3 B is the application synoptic diagram of the 3rd known joints of optical fibre;

Fig. 4 is the synoptic diagram of the 4th known joints of optical fibre;

Fig. 5 is the synoptic diagram of the 5th known joints of optical fibre;

Fig. 6 A is the front elevational schematic of the joints of optical fibre of the present invention;

Fig. 6 B is the schematic top plan view of the joints of optical fibre of the present invention;

Fig. 6 C is the schematic side view of the joints of optical fibre of the present invention;

Fig. 7 A is the front elevational schematic of the main body of the joints of optical fibre of the present invention;

Fig. 7 B is the schematic top plan view of the main body of the joints of optical fibre of the present invention;

Fig. 7 C is the schematic side view of the main body of the joints of optical fibre of the present invention;

Fig. 8 A is the front elevational schematic of the cover cap of the joints of optical fibre of the present invention;

Fig. 8 B is the schematic top plan view of the cover cap of the joints of optical fibre of the present invention;

Fig. 8 C is the schematic side view of the cover cap of the joints of optical fibre of the present invention;

Fig. 9 A is the front elevational schematic of another embodiment of cover cap of the present invention;

Fig. 9 B is the schematic side view of another embodiment of cover cap of the present invention;

Figure 10 is the combination synoptic diagram of main body of the present invention and cover cap;

Figure 11 A is the not inserting state synoptic diagram of the joints of optical fibre of the present invention;

Figure 11 B carries out middle view for the grafting of the joints of optical fibre of the present invention; And

Figure 11 C is the grafting completion status synoptic diagram of the joints of optical fibre of the present invention.

Wherein, description of reference numerals is as follows:

The 1a-joints of optical fibre; The 11a-connector body; The 12a-dust plug;

The 2a-joints of optical fibre; The 21a-connector body; The 22a-axial region;

The 23a-spring; The 24a-shield; The 25a-buffer substrate tablet; The 3a-joints of optical fibre;

The 31a-connector body; The 32a-axial region; The 33a-spring; The 34a-shield;

The 4a-joints of optical fibre; The 41a-connector body; The 42a-axial region; The 43a-leaf spring;

The 44a-shield; The 5a-joints of optical fibre; The 51a-connector body; 54a-elasticity shield;

The 6a-fibre-optical splice; The 7-joints of optical fibre; The 71-main body; The 711-plug socket;

The 712-madial wall; Guide channel in the 7121-; The 713-lateral wall; The 7131-draw-in groove;

The 714-fixture block; The 72-cover cap; 721-socket portion; The outer guide channel of 7211-; The 722-side plate;

The 7221-bearing surface; The 723-dust cap; The recessed edge of 7231-; 7231 '-convex arc; The 724-groove;

The 725-concave surface; The 726-chute; The 7261-guide ramp; The 727-portion of falling T;

The 7271-head; 7272,7273-guide ramp; The 728-sliding surface; The 6-fibre-optical splice;

The 61-plug; The 62-Plug Division; The 63-upper trip; Trip under the 64-.

Embodiment

The invention provides a kind of joints of optical fibre, utilize U type cover cap to coat main body, the draw-in groove that is provided with the ora terminalis up and down of the left and right sides of this main body, the left and right sides plate of this U type cover cap of inlay card, this U type cover cap has the socket portion of being extended an one-body molded dust cap by its apical margin downwards, and ora terminalis has the bearing surface of this draw-in groove that closely cooperates about the described biside plate edge; By this, this main body and this cover cap be capable of being combined to become the joints of optical fibre with this dust cap, its simple structure, firm, conveniently use and test, can improve assembling and testing efficiency and reduce cost, and the number of assembling steps complexity of avoiding the separate type dust cap to be caused, the danger of avoiding children to eat by mistake.

Please refer to Fig. 6 A to Fig. 6 C, the joints of optical fibre 7 provided by the invention, the U type cover cap 72 that it includes main body 71 and is coated on this main body 71.

Shown in Fig. 7 A to Fig. 7 C, this main body 71 have plug socket 711, along direction of insertion be located at this plug socket 711 about the interior guide channel 7121, the draw-in groove 7131 that is provided with along the ora terminalis up and down of these plug socket about 711 two lateral walls 713 of two madial walls 712.

Please refer to Fig. 8 A to Fig. 8 C, this U type cover cap 72 has socket portion 721, connects the left and right sides plate 722 of this socket portion 721, wherein, this socket portion 721 have in about the outer guide channel 7211 that is provided with along direction of insertion of two inboards, and extend integrated dust cap 723 downwards by these socket portion 721 apical margins, the ora terminalis up and down of described biside plate 722 has the bearing surface 7221 of this draw-in groove 7131 that closely cooperates, and these outer guide channel 7211 no difference in height ground link to each other with guide channel 7121 in this.

Please refer to Figure 10, this U type cover cap 72 coats this main body 71, and these draw-in groove 7131 inlay cards of this main body 71 are close to this bearing surface 7221 of the described biside plate 722 of this U type cover cap 72, reach the purpose that these U type cover cap 72 simple, firm covers are placed on this main body 71.

As Fig. 6 C, Fig. 7 C, Fig. 8 C and shown in Figure 10, the tail end of two lateral walls 713 of this main body 71 is respectively equipped with two fixture blocks 714, and the tail end of this side plate 722 of this U type cover cap 72 is provided with the portion of falling T 727, in order to corresponding and be embedded in described two fixture blocks 714.

As Fig. 6 C, Fig. 7 B, Fig. 7 C, Fig. 8 B, Fig. 8 C and shown in Figure 10, should the portion of falling T 727 have head 7271, be equipped with guide ramp 7272,7273 in the two ends, the left and right sides and the front side of head 7271, should the portion of falling T 727 move along direction of insertion in this draw-in groove 7131 smoothly by this, this U type cover cap 72 is overlapped is placed on this main body 71; Described two fixture blocks 714 are beloid wedge type along direction of insertion, therefore should the portion of falling T 727 be slipped over and chimeric described two fixture blocks 714.

Please refer to Figure 11 A, the invention provides these joints of optical fibre 7 and be applied to fibre-optical splice 6, this fibre-optical splice 6 comprises plug 61, be located at the semicircle fillet (not icon) of these two opposite sides, plug 61 left and right sides, be arranged at the Plug Division 62 of these plug 61 front ends and be convexly set in the trip up and down 63,64 on this plug two surfaces about in the of 61.

Shown in Figure 11 B, aforesaid this main body 71 should in guide channel 7121 and this U type cover cap 72 should outer guide channel 7211 all corresponding to this semicircle fillet of this fibre-optical splice 6, in order to guide this fibre-optical splice 6 insertions.

Shown in Fig. 8 C, the rear surface of this dust cap 723 of this U type cover cap 72 is provided with recessed edge 7231 in this apical margin junction of itself and this socket portion 721, makes this dust cap 723 leave headroom with these socket portion 721 junctions, and this dust cap 723 is rotated backward.

Shown in Fig. 8 A, this socket portion 721 of this U type cover cap 72 is concaved with a groove 724 in this apical margin, this groove 724 forms the identical concave surface 725 of the degree of depth after extending downward these dust cap 723 1 predetermined distance d, this groove 724 cooperates this upper trip 63 of this fibre-optical splice 6 to import (as Figure 11 B), this upper trip 63 is led into this groove 724 with this fibre-optical splice 6, is directed to this concave surface 725 (as Figure 11 C) along direction of insertion; Therefore, this concave surface 725 that the degree of depth and this groove 724 are identical provides a kind of continuous function of leading that continues after this groove 724, and this predetermined distance d more can determine and control the degree of depth that this upper trip 63 inserts.

Shown in Fig. 8 A, this socket portion 721 of this U type cover cap 72 is arranged with two sliding surfaces 728 in two ends, the root edge left and right sides, in order to the guide face (not icon) that cooperates these two ends, plug 61 root edge left and right sides to be arranged with, utilize this sliding surface 728 to limit this root edge of this Plug Division 62, construct in order to the fool proof that formation avoids this U type cover cap 72 oppositely to insert up and down.

Shown in Fig. 8 C, this socket portion 721 of this U type cover cap 72 inwardly is provided with the chute 726 of a predetermined length b with respect to the root edge of this socket portion 721, and this chute 726 corresponds to the following trip 64 of this fibre-optical splice 6; This chute 726 is provided with guide ramp 7261 in the rear end, when this fibre-optical splice 6 is led into these joints of optical fibre 7, this time trip 64 can slip over this root edge (as Figure 11 C) of these guide ramp 7261 these socket portions 721 of engaging smoothly.

Please refer to Fig. 9 A and Fig. 9 B, this U type cover cap 72 is one-body molded made by resilient material, the front surface of this dust cap 723 is provided with convex arc 7231 ' in this apical margin junction of itself and this socket portion 721, adjust the elasticity of this convex arc 7231 ' by the size of this convex arc 7231 ' and the ratio that is provided with, to adjust the elastic-restoring force of this dust cap 723 after this fibre-optical splice 6 is extracted out.That is, the size of this convex arc and the ratio that is provided with are according to this elasticity recovery power adjustment.

The invention provides this dust cap 723 and hide the purpose that this socket portion 721 reaches dustproof, anti-foreign matter.

The invention provides the insertion depth of trip 63,64 up and down that this concave surface 725 and this chute 726 limit this fibre-optical splice 6 jointly.

The invention provides this semicircle fillet of this interior guide channel 7121 and this outer this fibre-optical splice 6 of guide channel 7211 common pilots; The trip 63,64 up and down that this fibre-optical splice 6 of same guiding is set of this groove 724 and this chute 726 is with aiming between the luminous or light-receiving module in guaranteeing this fibre-optical splice 6 and being located at these joints of optical fibre 7.

The invention provides this draw-in groove 7131 of working in coordination and described biside plate 722 this bearing surface 7221, and mutual inlay card should portion of falling T 727 and described two fixture blocks 714, can guarantee to assemble the effect of driving fit.

This socket portion 721 and this sliding surface 728 of the invention provides mutual restriction limit this root edge of this Plug Division 62, avoid this U type lid 72 oppositely to insert up and down.

In sum, the present invention can reach its intended purposes and effect really, the preferred embodiment only of the present invention of above-mentioned announcement technological means, any modification and variation of doing according to spirit of the present invention, feature, all should be contained in as after in the claims of enclosing.

Claims

1, a kind of joints of optical fibre, it is applied to fibre-optical splice, it is characterized in that these joints of optical fibre comprise:

Main body; And

Cover the U type cover cap of this main body;

Wherein, the ora terminalis up and down of the left and right sides of this main body is provided with draw-in groove, this U type cover cap comprises socket portion, reaches the left and right sides plate of this socket portion of connection, this socket portion has by its apical margin extends integrated dust cap downwards, and the ora terminalis up and down of described biside plate has the bearing surface of this draw-in groove that closely cooperates.

2, the joints of optical fibre as claimed in claim 1 is characterized in that this U type cover cap is made of one piece by resilient material.

3, the joints of optical fibre as claimed in claim 1 is characterized in that the apical margin of this socket portion of this U type cover cap is concaved with a groove, and this groove extends downward this dust cap one preset distance and forms the identical concave surface of the degree of depth.

4, the joints of optical fibre as claimed in claim 1, this socket portion that it is characterized in that this U type cover cap inwardly is provided with the chute of a predetermined length with respect to the root edge of this socket portion, and this chute corresponds to the following trip of this fibre-optical splice.

5, the joints of optical fibre as claimed in claim 4 is characterized in that the rear end of this chute is provided with guide ramp.

6, the joints of optical fibre as claimed in claim 1 is characterized in that the rear surface of this dust cap of this U type cover cap is provided with recessed edge in this apical margin junction of itself and this socket portion, and this dust cap is rotated backward.

7, the joints of optical fibre as claimed in claim 1, the front surface that it is characterized in that this dust cap of this U type cover cap is provided with convex arc in this apical margin junction of itself and this socket portion, to adjust the elastic-restoring force of this dust cap after this fibre-optical splice is extracted out, the size of this convex arc and the ratio that is provided with are according to this elasticity recovery power adjustment.

8, the joints of optical fibre as claimed in claim 1 is characterized in that the tail end of two lateral walls of this main body is respectively equipped with two fixture blocks, and the tail end of the described biside plate of this U type cover cap is provided with the portion of falling T, are somebody's turn to do the portion's of falling T correspondence and are embedded in described two fixture blocks.

9, the joints of optical fibre as claimed in claim 8 is characterized in that this portion of falling T has head, and at two ends, the head left and right sides and the guide ramp that is provided with of front side, so that should the portion of falling T move along direction of insertion, this U type cover cap is overlapped is placed on this main body in this draw-in groove.

10, the joints of optical fibre as claimed in claim 8 is characterized in that described two fixture blocks are beloid wedge type along direction of insertion, this portion of falling T are slipped over and chimeric described two fixture blocks.