CN101887148B - Fiber core linker - Google Patents

Abstract

An embodiment of the present invention provides an optical fiber core connector, including: a clamping part, a fixing part, and a positioning part. The bottom is provided with two installation holes arranged side by side and transparent along the up and down direction, above the installation holes there is an annular top extending radially inward, and each installation hole is used to insert the corresponding positioning part from below , comprising: an optical fiber head fixing piece and a ferrule sleeved outside the fiber optic head fixing piece, the axial direction of the fiber optic head fixing piece and the ferrule are both provided with through holes passing through from top to bottom, the fiber optic head includes a section near the end of the optical fiber core and The glass sleeve wrapped outside the section of fiber core, the fiber head is inserted into the fiber head holder from above, and the light output end of the fiber head protrudes from the lower end of the fiber head holder; the side wall of the ferrule is provided with A concave part that curves inward.

Description

An optical fiber core connector

technical field

The invention belongs to the field of optical fiber switching, in particular to an optical fiber core connector applied to an optical fiber switching system.

Background technique

At present, as the basic bearer network for optical fiber communication transmission - optical fiber network, its operation and maintenance work is still in the original manual mode, that is, it usually needs to go to the site to perform fiber jumping operations manually to realize the connection and exchange between different optical fibers; however, it is restricted Due to the influence of many factors such as geographical dispersion and cumbersome manual switching operations, such manual operations are huge and time-consuming in daily work. Therefore, how to realize automatic docking and switching of optical fiber cores is a problem that people are very concerned about.

In response to this problem, there are currently technologies that can connect multiple optical fibers to the same docking switching device, and realize the docking of multiple optical fibers in the docking switching device through automatic control, so as to realize data information exchange in multiple optical fibers transmission. In the switching equipment based on the switching board, it is necessary to set a linker for fixing the optical fiber core. By inserting the linker into the switching hole on the switching board, the ends of the external line fibers fixed in the linker are docked, so as to achieve optical connection.

In practice, after the linker is inserted into the switch board, the linker passes through the fixed structure provided in the switch hole on the switch board, so that the linker remains stably docked, which increases the stability of the switch hole structure on the switch board. The complexity increases the processing difficulty of the equipment in the system.

Contents of the invention

In view of this, the purpose of the present invention is to provide an optical fiber core connector, which can be inserted into the exchange hole on the corresponding exchange board to realize optical fiber exchange, and at the same time reduce the processing difficulty of the equipment in the exchange system and reduce the processing cost .

To achieve the above object, an embodiment of the present invention provides an optical fiber core connector, including: a clamping part, a fixing part and a positioning part, the clamping part is arranged above the fixing part, and the inside of the fixing part is provided with The cavity through the left and right sides, at the bottom of the cavity, there are two installation holes arranged side by side and transparent in the up and down direction, above the installation holes there is an annular top extending radially inward, each The mounting holes are used to insert respectively corresponding positioning parts from below, and the positioning parts include: a fiber optic head fixing piece and a ferrule sleeved outside the fiber optic head fixing piece, and the shafts of the fiber optic head fixing piece and the ferrule Up and down through holes are arranged on both sides, and an optical fiber head is installed in the fiber head fixture of the positioning part in at least one of the two mounting holes. The fiber head includes a section near the end of the fiber core and is wrapped in The glass sleeve outside the section of fiber core, the fiber head is inserted into the fiber head holder from above, and the light output end of the fiber head protrudes from the lower end of the fiber head holder; the side wall of the ferrule A concave portion bent inward is provided.

Preferably, the fiber optic head fixing member includes a cover sheet and a sleeve arranged sequentially from top to bottom; the cover sheet includes a first hollow cylinder and a first annular outer edge arranged at the top end of the first hollow cylinder The sleeve includes a second hollow cylinder, a second annular outer edge disposed at the top of the second hollow cylinder, and an annular bottom disposed at the bottom of the second hollow cylinder and extending radially inward; In the fiber optic head fixture equipped with the fiber optic head, the fiber optic head is located in the sleeve and protrudes from the lower end of the sleeve, the second hollow cylinder of the sleeve is inserted into the ferrule from above, and the sleeve The lower bottom surface of the second annular outer edge of the ferrule abuts against the top surface of the ferrule; the glass sleeve of the optical fiber head is provided with a ring structure on the outer wall located in the sleeve, and the glass sleeve part above the ring structure A spring is sheathed on the outer side of the glass sleeve; the lower bottom surface of the annular structure of the glass sleeve is against the upper surface of the annular bottom of the sleeve; the first hollow cylinder of the cover is inserted into the sleeve from above, and The lower end of the first hollow cylinder abuts against the upper end of the spring, the lower surface of the first annular outer edge of the cover sheet abuts against the upper surface of the second annular outer edge of the sleeve, and the cover sheet The upper surface of the first annular outer edge is against the lower surface of the annular top above the mounting hole.

Preferably, the cover sheet forms a gap that penetrates up and down and extends radially from the outside to the through hole inside.

Preferably, a positioning hole penetrating in a direction perpendicular to the direction in which the two mounting holes are arranged side by side is provided between the two mounting holes of the fixing part, and the ferrule is at the same height as the positioning hole and A positioning groove extending along the direction of the positioning hole is provided on the outer wall facing the positioning hole, and a positioning pin is inserted in the positioning hole, and the positioning pin is matched with the positioning groove on the outer wall of the ferrule so that the ferrule is fixed in the mounting hole of the fixing part.

Preferably, the inner wall of the cavity of the fixing part is provided with symmetrical protrusions extending along the left and right directions.

Preferably, the clamping part is composed of upper and lower parts, wherein in a direction perpendicular to the cavity penetrating direction, the thickness of the upper part of the clamping part is greater than the thickness of the lower part of the clamping part, and the clamping part The lower part of the holding part forms a groove shape with the upper part of the clamping part and the fixing part.

Preferably, the glass sleeve of the part where the fiber head protrudes from the fiber head fixing member is covered with a porcelain sleeve.

According to the embodiment of the present invention, there is no need to set a complex structure for fixing the linker located below in the exchange hole on the exchange board, thereby reducing the complexity of the exchange hole structure on the exchange board, and at the same time, the link can be realized stably The docking between the optical devices is further realized to realize the docking between the fixed optical fiber heads, so as to achieve the purpose of optical switching.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the front view of an embodiment of the optical fiber core connector provided by the present invention;

Fig. 2 is a side view of the optical fiber core connector in Fig. 1;

Fig. 3 is an A-A sectional view of the optical fiber core connector in Fig. 2;

FIG. 4 is an exploded view of the optical fiber core connector in FIG. 1 .

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Fig. 1 is a front view of an embodiment of an optical fiber core connector provided by the present invention, Fig. 2 is a side view of the optical fiber core connector in Fig. 1, and Fig. 3 is an A-A sectional view of the optical fiber core connector in Fig. 2, FIG. 4 is an exploded view of the optical fiber core connector in FIG. 1 . Please refer to FIGS. 1 to 4 at the same time. The optical fiber core connector in this embodiment includes a clamping part 1, a fixing part 2 and a positioning part 3, wherein the clamping part 1 is arranged above the fixing part 2, and the inside of the fixing part 2 There is a cavity penetrating the left and right sides, and the inner wall of the cavity of the fixing part 2 is provided with a symmetrical raised part 23 extending along the left and right direction, and the raised part 23 can guide the outer guide of the optical fiber inserted into the connector. Links act as guides.

In addition, the clamping part 1 can be composed of upper and lower parts. In the direction perpendicular to the cavity penetration direction, the thickness of the upper part of the clamping part is greater than the thickness of the lower part of the clamping part. The part and the fixing part 2 form a groove shape, which can facilitate the gripping and releasing of the optical fiber core connector by the manipulator.

At the bottom of the cavity, there are two installation holes arranged side by side and transparent along the up and down directions, respectively marked as 21a and 21b. There are annular tops 21a1 and 21b1 extending radially inward above the mounting holes 21a and 21b. Each mounting hole is inserted into its corresponding positioning portion 3 from below. In FIG. 3 , the left positioning portion 3a is inserted into the mounting hole 21a, and the right positioning portion 3b is inserted into the mounting hole 21b.

In this embodiment, the structures of the positioning parts 3a and 3b are the same, and here only the positioning part 3b is taken as an example for illustration. The positioning part 3b includes an optical fiber positioning part and a ferrule 33 sleeved on the outside of the fiber head fixing part. The axial direction of the fiber optic head fixing part and the ferrule is provided with a through hole that penetrates up and down, and at least one of the mounting holes 21a and 21b is installed. The optical fiber head 4 is installed in the optical fiber head fixing part of the positioning part in Fig. 3. In particular, only the optical fiber head fixing part in the positioning part 3b is equipped with the optical fiber head 4 as an example. The fiber head 4 includes a section near the end of the fiber core and a glass sleeve 41 wrapped around the section of the fiber core. The fiber head 4 is inserted into the fiber head holder from above, and its light output end extends from the lower end of the fiber head holder. The side wall of the ferrule 33 is provided with an inwardly bent concave portion 33a.

When using the above connector, it is necessary to insert the connector into the exchange hole on the exchange board from the top of the exchange board. Specifically, insert the ferrule in the linker into the exchange hole to realize the docking of the two optical fiber heads. , another connector needs to be inserted from the bottom of the exchange board, and the ferrule of the connector inserted from the bottom can be directly inserted into the ferrule in the connector inserted from above, and through the concave part of the side wall in the ferrule The ferrule of the connector located below is clamped to achieve a stable connection. Since the optical fiber core connector provided by this embodiment is used as the connector inserted from the top of the switch board, the connector located below can be fixed more easily, and there is no need to set complicated fixing devices in the switch holes on the switch board. The structure of the linker located below reduces the complexity of the switch hole structure on the switch board, and at the same time can stably realize the docking between the linkers, and further realize the docking between the fiber heads fixed therein, and achieve the goal of optical switching. Purpose.

The specific structure of the optical fiber head fixing member will be described in detail below. In this embodiment, the fiber optic head fixing member may include a cover sheet 31 and a sleeve 32 arranged in sequence from top to bottom. The cover sheet 31 includes a first hollow cylinder 31b and a first annular outer edge 31a disposed on the top end of the first hollow cylinder 31b. The sleeve 32 includes a second hollow cylinder 32b, a second annular outer edge 32a disposed at the top of the second hollow cylinder 32b, and an annular bottom 32c disposed at the bottom of the second hollow cylinder 32b and extending radially inward .

In the fiber head holder (in Fig. 3 being the fiber head holder in the mounting hole 21b) with the fiber head installed, the fiber head 4 is positioned in the sleeve 32 and stretches out from the lower end of the sleeve 32, the sleeve 32 The second hollow cylinder 32b is inserted into the ferrule 33 from above. The lower bottom surface of the second annular outer edge 32 a of the sleeve 32 abuts against the top surface of the ferrule 33 .

In addition, in order to realize that the optical fiber head 4 is fixed in the sleeve 32, the glass sleeve 41 is provided with an annular structure 42 outside the sleeve 32, and when the optical fiber head 4 is inserted into the sleeve 32 and the When protruding, the lower bottom surface of the ring structure 42 on the outer wall of the glass sleeve 41 is against the upper bottom surface of the ring bottom 32c of the sleeve 32, which can prevent the optical fiber head 4 from sliding down from the sleeve 32 completely.

A spring 43 is sheathed outside the glass sleeve 41 above the ring structure 42 of the optical fiber head 4 . The first hollow cylinder 31b of the cover 31 is inserted into the sleeve 32 from above, and the lower end of the first hollow cylinder 32b is against the upper end of the spring 43, and the upper surface of the first annular outer edge 31a of the cover 31 is in contact with the mounting surface. The annular top 21b1 above the hole 21b is offset. In this way, the cover plate 31 presses the optical fiber head 4 downward by the spring 43 in contact with it, and due to the limitation of the ring structure 42 on the outer wall of the glass sleeve 41, the fiber head 4 stops at the bottom surface of the ring structure 42 and the sleeve 32. In addition, when the end of the optical fiber head 4 is pressed upwards, the end of the optical fiber head 4 can move upward due to the stretchable characteristics of the spring 4 .

When inserting the optical fiber core connector in this embodiment into the exchange hole in the switch board from above, and inserting the corresponding connector from the other side of the switch board, the fiber heads in the two connectors will be connected. In the actual design process, setting the position of the optical fiber heads so that they just touch and do not squeeze each other during docking has high requirements for processing technology. However, when the fiber head in the fiber core connector inserted from above provided in this embodiment is docked with the fiber head in the connector below, the fiber head in the connector in this embodiment is subjected to another fiber head. When the upward extrusion force is applied, it can overcome the elastic force of the spring and move upward, avoiding the damage of the device caused by the excessive extrusion force between the two optical fiber heads due to the error in the position setting; and the optical fiber core link in this embodiment During the upward movement of the fiber optic head in the connector, the downward elastic force generated by the spring enables the end of the fiber optic head in the connector to be docked with the end of the fiber optic head docked with it to achieve stable and reliable docking.

In addition, considering how to more conveniently insert the fiber optic head into the fixing part, as shown in FIG. 4, preferably, the cover sheet 31 forms a gap 31c that penetrates up and down and extends radially from the outside to the inner through hole. . In this way, when the fiber head is inserted into the connector, it is only necessary to pass the fiber head and the optical fiber connected to it through the cavity of the fixing part 2 of the connector through the mounting hole, and then the rear optical fiber connected to the fiber head 4 from the cover The notch 31c on the side of the sheet 31 is moved into the middle through hole of the cover plate 31, so that the rear optical fiber connected with the fiber head 4 passes through the cover plate 31, thereby quickly realizing the installation of the fiber head.

In addition, in order to enable the positioning part 3 to be stably fixed in the mounting hole 21, preferably, between the two mounting holes 21a and 21b of the fixing part 2, a The through positioning hole 22 is provided with a positioning groove (not shown) extending in the direction of the positioning hole 22 at the same height of the ferrule 33 and the positioning hole 22 and facing the outer wall of the positioning hole 22. A positioning pin 24 is inserted in the hole 22, and the positioning pin 24 matches the positioning groove on the outer wall of the ferrule 33, so that the positioning pin 24 can limit the vertical movement of the ferrule 33, so that the ferrule 33 is fixed on the bottom of the fixed part 2. In the installation hole 21 , further, the entire positioning part 3 is fixed in the installation hole 21 of the fixing part 2 .

It should be noted that, in the above-mentioned embodiment, the glass sleeve of the part where the optical fiber head 4 protrudes from the lower end of the sleeve 32 can also be covered with a porcelain sleeve, which can prevent light from passing through the side wall of the glass sleeve of the optical fiber head 4. exposed.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (5)

1. fiber core linker; It is characterized in that; Comprise: clamping part, fixed part and location division; Said clamping part is arranged on the top of fixed part, and said fixed part inside is provided with the cavity that the left and right side connects, and is provided with the penetrating along the vertical direction mounting hole that is arranged side by side about two in the bottom of cavity; Above said mounting hole, have the annular top that radially extends internally; Each mounting hole is used for inserting each self-corresponding location division respectively from the below, and said location division comprises: the cutting ferrule that the optical fiber head fixture is outside with being set in said optical fiber head fixture, the through hole that up/down perforation axially all is set of said optical fiber head fixture and cutting ferrule; In the optical fiber head fixture of the location division at least one mounting hole in said two mounting holes optical fiber head is housed; Said optical fiber head comprises near the fiber cores end one section and be wrapped in the outside glass bushing of this section fiber cores, and said optical fiber head is inserted into the said optical fiber head fixture from the top, and the light output end of optical fiber head stretches out from the lower end of optical fiber head fixture; The sidewall of said cutting ferrule is provided with the depressed part to interior curve;

Said optical fiber head fixture comprises cover plate, the sleeve that sets gradually from top to bottom; Said cover plate comprises first hollow circular cylinder and the first annular outer that is arranged on the said first hollow circular cylinder top; The circular bottom part that said sleeve comprises second hollow circular cylinder, is arranged on the second annular outer on the said second hollow circular cylinder top and is arranged on second hollow circular cylinder bottom and radially extends internally; In the optical fiber head fixture of optical fiber head was housed, optical fiber head was arranged in sleeve and stretches out from the lower end of said sleeve, and second hollow circular cylinder of said sleeve is inserted into the cutting ferrule from the top, and the bottom surface of the second annular outer of said sleeve and the end face of cutting ferrule offset; The glass bushing of said optical fiber head is provided with loop configuration at the outer wall that is arranged in said sleeve, the sheathed spring in the outside of the glass bushing part above said loop configuration; The upper surface of the bottom surface of the loop configuration of said glass bushing and the circular bottom part of sleeve offsets; First hollow circular cylinder of said cover plate is inserted into the said sleeve from the top; And the lower end of said first hollow circular cylinder and the upper end of said spring offset; The upper surface of the lower surface of the first annular outer of said cover plate and the second annular outer of said sleeve offsets, and the lower surface of the annular top of the upper surface of the first annular outer of said cover plate and mounting hole top offsets;

Between two mounting holes of said fixed part, be provided with along with two mounting holes pilot hole that the perpendicular direction of direction runs through that is arranged side by side; Be provided with the detent that extends along the direction of pilot hole at said cutting ferrule and said pilot hole sustained height place and towards a side outer wall of said pilot hole; In said pilot hole, be inserted with register pin; Said register pin matches with the detent of said cutting ferrule outer wall, so that said cutting ferrule is fixed in the mounting hole of said fixed part.

2. fiber core linker according to claim 1 is characterized in that, said cover plate forms a gap that runs through and radially extend to from the outside interior bone up and down.

3. according to any described fiber core linker in claim 1 or 2, it is characterized in that the cavity inner wall of said fixed part is provided with the lug boss along the left and right directions extension of symmetry.

4. according to any described fiber core linker in claim 1 or 2; It is characterized in that; Said clamping part is made up of two parts up and down; Wherein run through on the vertical direction of direction at said cavity, the top thickness of said clamping part is greater than the lower part thickness of said clamping part, and the lower part of said clamping part and said clamping part top and said fixed part form groove-like.

5. according to any described fiber core linker in claim 1 or 2, it is characterized in that the glass bushing that said optical fiber head stretches out the part of optical fiber head fixture also is with insulator outward.

Images