KR100193992B1 - Mechanical optical splicer assembly - Google Patents

Abstract

The present invention relates to a connector for connecting an optical cable, and in particular, when the optical fiber is connected to the hole (H) between the first and the second body is widened so that the optical fiber cable can be easily inserted into the connector flux, Once connected, the clamper can firmly fix the optical fiber by the elastic piece, and the alignment grooves 11 and 21 are formed so that the centers of the optical fibers to be connected coincide with each other. It can be kept in good condition, and it is very easy to connect and align the optical cable without disassembling the connector.

Description

Mechanical optical splicer assembly.

1 is a perspective view showing a representative embodiment of a mechanical optical connector assembly according to the present invention.

FIG. 2 is an exploded perspective view showing an exploded view of the mechanical optical connector assembly shown in FIG.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a side view showing a state where the first body and the second body are opened by rotating a key to connect the optical fibers.

5 is a perspective view showing another embodiment of the mechanical optical connector assembly according to the present invention.

6 is an exploded perspective view of the mechanical optical connector assembly according to FIG.

FIG. 7 is a view similar to FIG. 3, and is taken along line B-B in FIG.

* Explanation of symbols for main parts of the drawings

10: first body 11: the alignment groove

12: clamping hole 12a: step

20: second body 21: alignment groove

22: V groove 24: seating portion

25: base member 30: clamp

32: V groove 40: spring

50: elastic piece 52: protrusion

60 ring 70 optical fiber cable

80: height 100: splicer assembly

H: Hall

The present invention relates to a connector for connecting an optical cable, and in particular, to facilitate the insertion of the optical fiber cable to the connector when connecting the optical fiber, and at the same time mechanical connection that can be easily and simply connected and aligned between the ends of each optical fiber An optical connector assembly.

In general, optical communication is an exchange of information by transmitting light. An optical fiber made of glass fiber (optical fiber), that is, an optical cable, is a medium, and can transmit tens of thousands of times more information than electric communication by current coaxial cable. have.

In addition, since the transmission state of the information is good because it is not influenced by radio waves and magnetic fields from the outside, it is widely used in the communication field, and its use range is gradually expanding to other fields.

Recently, the rapid recognition of informatization has required more optical cable lines. Recently developed optical cables are used to process a lot of information by producing ribbon-type multi-core optical cables in which a single optical fiber is integrated into a strip.

Such an optical cable is installed at a distance of several hundred kilometers or more, and thus requires connection and branching of the cable in the middle.

However, since the optical fiber made of very small diameter (125㎛) is formed inside the optical cable, it is very difficult to connect the cores of the optical fibers to each other, and in the case of the multi-core optical cable, it is necessary to connect a plurality of optical fibers at once. Even more difficult.

Various methods are used for the connection of an optical fiber, and typical examples thereof include a fusion splicing method and a mechanical splicing method. The electronic fusion splicing method is used to melt and connect optical fibers and is mainly used for permanent connection.In order to achieve this, expensive precision fusion splicing apparatus must be used and electricity must be applied. There is an advantage of high reliability of optical characteristics.

In addition, the mechanical optical cable connector has various advantages, such as convenience of work and no additional device, so that it can be easily used in any place, and the reliability of optical characteristics is almost the same as that of fusion splicing.

Conventional mechanical optical cable splices often use special tools, making it difficult to connect in the field, and in the clamping method, there is a defect in not fully grabbing the coating part of the optical fiber. The occurrence of torsion of the broken optical fiber caused the breakage of the optical fiber.

In order to fundamentally solve the breakage of the optical fiber, it is useful to prevent the generated torsional tension directly applied to the optical fiber cladding and to perform the second clamping at the optical fiber coating.

In addition, in the implementation of the double clamping function has a structure in which the primary clamping and the secondary clamping function is operated at the same time.

The conventional optical fiber splice for splicing optical fibers has a special tool for clamping function that adds the necessary force to maintain alignment when the fiber is spliced. In addition, when the force acts in the axial direction of the optical fiber in performing the clamping function, the aligned optical fiber is axially pushed in the axial direction, thereby causing a connection failure and an increase in optical loss.

As a countermeasure for this, the anti-rolling structure is added to prevent the pressing plate from being pushed in the axial direction. In this case, the additional device for the implementation is small, so it is difficult in terms of manufacturing technology and is weak in structure. It is a challenge that requires great care.

In addition, in using the double clamping function to reduce the strain in the optical fiber connection portion, the clamping function (primary clamping function) and the optical fiber coating portion clamping function (secondary clamping) function of the conventional optical cable connection device At the same time, when the optical fiber is inserted and clamped in one end of the splice, the coating part (secondary clamping) and the cladding part (single-clamping) of the inserted optical fiber are simultaneously pressed down and inserted into the opposite end of the splice. The optical fiber is clogged so that it cannot be inserted into the connection, making it difficult to align the fibers.

Therefore, the splicing device of this structure clamps the respective optical fiber coatings and cores (core wires) at the same time after inserting optical fibers in both insertion ports of the splicing device in a state where both the primary and the secondary clamping are left open.

However, such a structure is difficult to tune to optimize the alignment of the optical fiber because the optical fiber on one side of the connection device is not fixed, and the optical loss is poor after measuring the optical loss even after tuning. It is inconvenient to perform the connection again from the beginning.

The present invention has been made to solve the problems caused by the conventional optical fiber splicing apparatus as described above.

An object of the present invention is to facilitate the insertion of the optical fiber by the key when the optical fiber is inserted into the connector when performing the clamping function, and also to ensure that the inserted optical fiber is properly aligned with the axis of both optical fibers by the alignment groove. The present invention provides a mechanical optical connector assembly capable of easily and precisely performing a tuning operation.

It is another object of the present invention to provide a connector assembly for an optical cable that can maintain an easy, precise and robust connection state so that the optical fiber whose tuning operation is completed by the clamper can be maintained without deformation.

Mechanical optical connector assembly according to the object of the present invention, has a predetermined length, is formed with an alignment groove 11 penetrating the center axis line, the clamping hole penetrating the center portion of the alignment groove (11) at right angles ( A first torso 10 comprising 12); It has a length equal to the length of the first body 10, provided with a corresponding side alignment groove 21 corresponding to the alignment groove 11 so as to form a hole (H) is overlapped with the first body A second torso 20; A clamper (30) slidably inserted into the clamping hole (12) and having a V-groove (32) on the inner end face thereof constituting the same axis as the alignment grooves (11, 21); Elastic means for urging the clamper 30 radially inward of the first barrel 10; Pressing means for pressing the clamper 30 into the clamping hole 12; Bending means for bringing the alignment grooves 11 and 21 of the first body 10 and the second body 20 into close contact with each other such that they are aligned; An optical fiber cable positioned so that each end is connected to a central portion of the alignment grooves 11 and 21; Is inserted into both ends of the hole (H), it can be achieved through the key (80) for accommodating the optical fiber cable therein, and to extend the gap of the hole (h).

Hereinafter, the mechanical optical connector assembly according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, FIG. 1 is a perspective view showing the mechanical optical connector assembly according to the present invention, which is largely the first body 10, the second body 20, the clamper 30, the elastic means, the pressing means , A banding means, an optical fiber cable 70 and a key 80.

Referring to FIG. 2, FIG. 2 is an exploded perspective view showing an exploded view of the mechanical optical connector assembly shown in FIG. 1, wherein the first body 10 has a predetermined length and is aligned through its central axis. The groove 11 is formed, and the clamping hole 12 penetrating the center portion of the alignment groove 11 at right angles is integrally formed.

The clamping hole 12 has a stepped portion 12a formed in its inner diameter.

The second body 20 has the same length as the length of the first body 10, and the alignment groove 11 so as to form a hole (H) is overlapped with the alignment groove 11 of the first body ) Is provided with a corresponding side alignment groove 21.

In addition, the V-groove 22 is formed at a predetermined length in the center of the alignment groove 21 of the first body.

When the alignment grooves 21 are coupled to both alignment grooves 11 and 21, the diameters of the alignment grooves 21 surround the core wires of the optical fiber so that they are properly aligned.

In addition, the first body 10 and the second body 20 is a cross-sectional view of the optical fiber passing through the alignment grooves (11, 21) of the axis of the radial pressure inward to act to fix it preferably It is good to make this circle.

If the cross section of the first body 10 and the second body 20 may be formed in a square or polygon, but it is difficult to grip the optical fiber passing through the axis at equal pressure, so that the optical fiber cable from the connector It can come off easily.

Reference numeral 20a is a protruding pin.

The clamper 30 is slidably inserted into the clamping hole 12, and an upper surface thereof constitutes a surface parallel to the surface of the first body 10, and on the opposite side thereof, a V groove of the second body 20. Corresponding V-groove 32 matching with 22 is formed, and has a structure slidably coupled to step 12a formed in clamping hole 12.

In addition, the clamper 30 and the clamping hole 12 is formed in a polygonal column so that the clamper 30 is not rotated in the clamping hole, which is due to the rotation of the clamper 30 V groove through which the optical fiber penetrates ( This is to prevent the axis of 32) from shifting.

The elastic means is a spring 40 for returning the clamper 30 to an upper portion. In this specification, one end is positioned at the stepped portion 12a of the clamping hole 12, and the other end is a step surface of the clamper 30. It is inserted into the clamper hole 12 so as to be positioned at 31.

The pressing means is for pressing the clamper 30 described above to be in close contact with the V groove 32 formed in the cross section at a predetermined pressure to the V groove 22 of the second body. 2 is formed so as to cover the circumference of the body (10, 20), one side of the elastic piece 50 cut in the axial direction of the first and second body (10, 20) was adopted.

The elastic piece 50 is formed integrally with a protrusion 52 extending inwardly on an inner surface thereof.

The protrusion 52 is designed to have a curved surface and rotates the elastic piece 50 so as to press the clamper 30 downward when the protrusion 52 is positioned on the surface of the clamper 30.

The pressing means has a greater elastic force than that of the elastic means.

The bending means is to allow the first and second bodies 10 and 20 described above to be a single body, and a ring so that each body is bent at one end of both sides of the first and second bodies 10 and 20. 60 is coupled around the torso 10, 20.

In addition, the ring 60 is caught by the protruding pins 20a formed on the circumferential surface of the second body 20 so as not to easily fall out of the first body 10 and the second body 20.

Of course, the same effect can be expected even if the protruding pin 20a is formed on the circumferential surface of the first body 10.

Elastic ring 60 is a ring made of a metal material, one side is cut in the axial direction of the first and second body (10, 20), the elasticity inherent is acting toward its inner surface.

As shown in FIG. 1, the optical fiber cable 70 is inserted into the hole H formed by combining the first body 10 and the second body 20 by the bending means.

At this time, the optical fiber cable 70 of one side that is symmetrically inserted into the holes (H) on both sides is a transmitter side cable, and the receiver side optical fiber cable is inserted into the hole (H) of the other side and the V groove 22, 32 are connected to each other in the center.

The key 80 is inserted at both inlet sides of the hole H so that the gap is opened by spaced apart the predetermined surface of the first and second bodies 10 and 20 at regular intervals. It is made.

The key 80 is to create a gap such that the optical fiber cable 70 can be inserted to insert the optical fiber cable 70 into the hole (H).

Accordingly, when the key 80 is rotated, the first body 10, the second body 20, and the ring 60 are opened in the radial direction by the key, and at this time, light is generated by the gap of the hole H generated. After the fiber cable 70 is inserted and the key 80 is returned to its original position, the optical fiber cable inserted into the hole H is brought into close contact with each other by the elasticity of the ring 60 and the first body 10 and the second body 20. The sheath of 70 is gripped at a constant pressure.

When described in detail with reference to the accompanying drawings, the working example and the working effect according to a representative embodiment of the present invention configured as described above.

As shown in FIG. 1, the connector assembly 11 according to the present invention is configured in a substantially capsule shape, and ends of each optical fiber cable are coupled therein.

Therefore, the process of coupling both optical fiber cables into the connector assembly is as follows.

First, as shown in FIG. 3, the elastic piece 50 surrounding the centers of the first body 10 and the second body 20 is slid to one side to expose the clamper 30, and then the clamping hole ( 12) Take out the clamper 30 and the spring 40 inserted into the.

Subsequently, as shown in FIG. 4, the extended hole H is rotated by rotating the keys 80 inserted in both sides of the two side holes H formed on the contact surfaces of the first body 10 and the second body 20. Insert the optical fiber cable 70 into the).

In this case, the ring 60 is opened in the radial direction by the first body and the second body when the key 80 is rotated.

In this process, the optical fiber cable 70 is inserted into both sides of the hole H, and the alignment is performed while checking whether the ends of both optical fiber cables are properly connected on the V grooves 22 and 32 through the clamping holes 12. When the alignment is confirmed, return the key to its original position.

After the tuning of both optical fiber cables is completed, the spring 40 and the clamper 30 are inserted into the clamping hole 12, and the elastic piece 50 attached to the body is placed on the upper portion of the clamper 30. Slide to cover, and the protrusion 52 formed on the inner surface of the elastic piece 50 on the surface of the clamper (30).

Therefore, the projection 52 of the elastic piece 50 presses the clamper 30 downward by its elasticity so that the V groove 32 inserted into the clamper hole 12 is formed in the second body 20. Closely connected to the groove 22 and gripping the periphery of the core wires of the respective optical fiber cables passing through the groove, it is possible to keep the optical fiber cable 70 on both sides connected to each other, the core wires of the optical fiber cable on both sides It can be fixed so as not to fall out of the body.

Such a connector assembly according to the present invention can be connected to the tuning operation, the connection of the optical cable more quickly and accurately, but will be described another embodiment related to this.

As shown in FIGS. 5 and 6, the notches 14 and 23 are further formed in the middle of the surface where the first and second bodies 10 and 20 are in contact with each other, and the first and second bodies are also formed. On the inner surface of the contact surface of the body 20 to form a passage forming a hole (H) along its central axis in a multi-stage, forming a seating portion 24 to the central portion of the second body 20 to a predetermined depth And the base end member 25 is formed on the seating portion 24 is inserted.

The notch 14 is inserted into the optical fiber cable 70 when rotating the key (80) inserted into the hole (H) for tuning and alignment work the first body 10 and the second body ( It is to bend at the middle point of 20).

As such, the reason why the body is bent in a certain section is that when the key is rotated, the first body 10 and the second body 20 are opened so that the hole H opposite the hole H does not open. It is to.

In other words, if the hole H on one side is opened, the optical fiber inserted on one side may be fixed because the alignment and connection intervals of the already aligned one side of the optical fiber may be shifted if the hole H is opened to the opposite hole H. This is to connect the fiber more accurately by maintaining the state and then aligning the end of the other fiber there.

In addition, the reason why the hole (H) is formed in multiple stages is that the optical fiber has a glass fiber core therein and cladding having different refractive indices so that light can be transferred from the core around the core. Since it consists of a jacket to protect the ladder, the core, cladding, and jacket of the optical fiber are sequentially peeled off and the exposed part is inserted into the multi-stage hole (H) automatically. It is for the optical fiber to be placed inside.

Therefore, when the optical fiber is inserted into the hole (H), the end cross-sections of the cores on both sides are in contact with each other.

In addition, the seating portion 24 formed at a predetermined depth in the central portion of the first body 10 and the base member 25 positioned on the seating portion are for connecting to a cross section of the core wire inserted into the hole H. The V groove 22a is formed to form the same axis as the hole H at the center thereof, and the optical fiber is inserted to meet the V groove 22a.

Since the combination of the first body 10 and the second body 20 is as described above.

Claims (11)

An alignment groove 11 having a predetermined length and penetrating the central axis thereof is formed, and includes a first body 10 including a clamping hole 12 penetrating a central portion of the alignment groove 11 at right angles. ; It has the same length as the length of the first body 10, and having a corresponding alignment groove 21 corresponding to the alignment groove 11 so as to form a hole (H) is superimposed with the first body A second torso 20; A clamper (30) slidably inserted into the clamping hole (12) and having a groove (32) on the inner end face thereof constituting the same axis as the alignment grooves (11, 21); Elastic means for urging the clamper (30) inward in the radial direction of the first body (10); Pressing means for pressing the clamper 30 into the clamping hole 12; Bending means for bringing the alignment grooves 11 and 21 of the first body 10 and the second body 20 into close contact with each other such that they are aligned; The optical fiber cable 70 is positioned so that each end is connected to the central portion of the alignment grooves 11 and 21 and the both ends of the hole H, and accommodates the optical fiber cable 70 therein. And a key (80) for extending the spacing of the holes. 2. The mechanical light according to claim 1, wherein the elastic means is a spring (40) inserted between the clamping hole (12) and the clamper (30) to impart elasticity to push the clamper (30) upward. Splice assembly. According to claim 1, wherein the pressing means is surrounded by the outer wall of the first body 10 and the second body 20, the inner wall is formed with a protrusion 52 protruding in a predetermined length inward, one side is Mechanical connector assembly, characterized in that the elastic piece (50) cut in the axial direction of the first body (10) and the second body (20). According to claim 1, wherein the bending means is in close contact with the outer wall of the first body 10 and the second body 20, one surface in the axial direction of the first body 10 and the second body 20 Mechanical optical connector assembly, characterized in that it is a cut ring (60). The method of claim 1, wherein the seating portion 24 is formed in the center of the hole (H) of the second body 20, the seating portion 24 is inserted to form the axis of the hole (H) And a base end member (25) having a groove (22a). 2. The mechanical optical connector assembly according to claim 1, wherein when the first and second bodies (10) overlap each other to form a hole (H), the cross section of the outer wall forms a circle. The mechanical optical connector assembly according to claim 1, wherein the clamper (30) is formed in a polygonal shape so as not to rotate. The mechanical optical connector assembly according to claim 1, wherein the alignment grooves (11, 21) are formed in multiple stages. The mechanical optical connector assembly according to claim 1, further comprising cutouts (14, 23) formed at predetermined intervals from the inside to the outside on the surface where the first body (10) and the second body (20) contact each other. . The mechanical optical connector assembly according to claim 1, wherein a protruding pin (20a) is formed on a circumferential surface of the outer end of the first body (10) to prevent the ring (60) from being separated. The mechanical optical connector assembly according to claim 1, wherein a protruding pin (20a) is formed on a circumferential surface of the outer end of the second body (20) to prevent the ring (60) from being separated.