KR101051119B1 - Field Assembly Optical Connector - Google Patents

Abstract

The present invention relates to a field-assembled optical connector, the ferrule coupling portion 11 is provided with a ferrule (5) inserted into one end, the center is opened upward and the ferrule (5) and the optical fiber (7) A clamp body (10) having a core wire placement groove (12) in which core wires (5a, 7a) of the core are arranged and penetrated so that the optical fiber (7) is inserted into the other end thereof; A clamp auxiliary body 20 inserted into the open center portion of the clamp body 10 and having a core wire cover groove 21 formed at a bottom thereof to cover the core wire placement groove 12; A core wire pressing member 30 for pressurizing the clamp auxiliary body 20 to press the core wires 5a and 7a of the bottom surface thereof; and covering the clamp body 10 so as to be coupled to the clamp body 10 and to a tip end thereof. A first housing 40 having a spring arrangement 42 disposed on an outer circumferential surface of the optical fiber insertion portion 15 and penetrating so that the optical fiber 7 is inserted and the ferrule 5 is exposed to a rear end thereof; the first housing 40 A second housing 50 coupled to cover an outer surface of a rear end portion of the first housing; and a first housing 40 coupled to the first housing 40 by covering the front end of the first housing 40, and the optical fiber 7 being coupled to the first housing 40. Boot 60 penetrated to enter); It is configured to include a pressure release member 70 for releasing the pressure of the core wire pressing member (30). Therefore, when the core connection of the optical fiber in the field, it is possible to achieve a stable and robust connection and disconnection of the optical fibers and to make the repetitive connection simple and quick.

Description

Field-mountable optical connector {Field installable optical fiber connector}

The present invention relates to a field assembly type optical connector, and more specifically, to cover and press the core wire pressing member to the outer periphery of the clamp main body and the clamp auxiliary body, and the optical connector structure covered with the first and second housings again. In addition, by providing a pressure releasing member that is configured separately to release the pressure of the core wire pressure member at the same time, the connection between the core wires is made stable and quick by releasing the pressure of the core wire pressure member through the pressure release member when connecting the core wire of the optical fiber in the field In addition, the pressure release member is separated from the optical connector so that pressurization to the core wire is generated again so that the core wire can be securely fixed. It relates to a field assembly optical connector.

In general, the field-assembled optical connector used for the connection of optical fiber, which is a transmission medium of optical communication, is widely used in optical links such as various communication devices, precision measuring instruments, audio and video devices, and sensors. Most of these field-assembled optical connectors are terminated and assembled in a manufacturing plant, and recently, due to the expansion of FTTH (Fiber To The Home) service, they can be quickly and quickly installed at the line site when connecting multiple lines. In order to cope easily, a part of the optical connector is processed and assembled in advance so that the optical connector can be connected by simple stripping and cutting of an optical fiber or an optical cable.

As an example, when the field assembly type optical connector of the prior art is briefly described, the core component is a ferrule for making connections between optical fibers, and the optical fiber is protected by preventing bending of the optical fiber exposed to the outside of the ferrule. It consists of a boot and a housing for wrapping and protecting the outside of the ferrule.

The prior art field-assembled optical connector connects the core wires of the optical fibers introduced from both sides in the ferrule to each other and hardens the core wire by injecting a curable resin such as epoxy resin into the ferrule so that the connection state thereof is firmly fixed. The hardening resin is injected into the boot to cure the optical fiber disposed in the boot so that the core wires are connected to each other to complete the connection fixing operation of the core wires.

However, such a prior art field assembly type optical connector has a problem in that the use of the optical connector is only one-time and the repetitive use is impossible because the core wire is permanently connected using the curable resin.

In addition, once the connection is made, even if connection loss occurs, such as a misalignment between core wires, the connection can not be corrected, there is a problem that the connection performance between the optical fiber is significantly reduced.

In addition, when the core wires are not firmly fixed even after the optical fiber is connected, there is a problem such as a connection loss occurs even in the fine movement of the optical cable.

The present invention has been made in order to solve this problem, and to cover the pressure wire member to the outer periphery of the clamp main body and the clamp auxiliary body to pressurize and to provide an optical connector structure to cover the first and second housings again thereon. By providing a pressure release member that is configured separately to release the pressure of the core wire pressure member, by releasing the pressure of the core wire pressure member through the pressure release member when connecting the core wire of the optical fiber in the field so that the connection between the core wires can be made stably and quickly, In addition, by releasing the pressure release member from the optical connector, pressurization to the core wire is generated again so that the core wire can be firmly fixed. The purpose is to provide a fluorescent connector.

Field assembly type optical connector of the present invention for achieving the above object is provided with a ferrule coupling portion is inserted ferrule is coupled to one end and the core is arranged in the center and the core wire of the ferrule and the optical fiber is arranged on the bottom surface A clamp body having a groove formed therein and having an optical fiber insertion portion penetrated to insert the optical fiber at the other end thereof; A clamp auxiliary body inserted into an open center portion of the clamp body and having a core wire cover groove formed at a bottom thereof to cover the core arrangement groove; A core wire pressing member pressurizing the clamp auxiliary body to pressurize the core wire of the bottom surface thereof; a core wire pressing member covering the clamp main body and coupled to the clamp main body and inserted into the front end to penetrate the optical fiber and through the rear end to expose the ferrule; A first housing having a spring arrangement positioned at a second housing; a second housing coupled to cover an outer surface of a rear end of the first housing; a second housing coupled to the first housing by covering a front end of the first housing, and having an optical fiber connected to the first housing; Boot penetrated to flow into; A pressure release member for releasing the pressure on the core wire pressing member; And a leaf spring embedded in a spring arrangement positioned on an outer circumferential surface of the optical fiber insertion part, so that the coupling between the clamp main body and the first housing is firmly coupled without any rattling. An incision tube which is cut along the entire direction but is widened in the arc direction, and a member opening part having a continuous and narrow gap with the protrusion insertion hole is provided and is elastically opened and narrowed in the arc direction to cover and clamp the clamp main body and the auxiliary body. The through hole is formed on one side of the first and second housings in the same line as the protrusion insertion hole, and the pressure release member penetrates the through holes of the first and second housings and the protrusion insertion hole of the core wire pressing member. After the second housing is pushed in the longitudinal direction, the second opening is moved to the member opening portion, and the member opening portion is circumferentially moved. Bringing the pressure and the pressure of the wire clamp auxiliary body is characterized in that the pressure release protrusion is further provided to be released.

In addition, in the field-assembled optical connector according to the present invention, the pressure release member has a recessed shape in which one side is open so as to cover the bottom and both sides of the second housing when the pressure is released from the core wire. It is preferable that both sides are provided with a handle for fixedly holding the pressure release member to push the second housing in the longitudinal direction while the second housing is mounted.

In addition, in the field assembly type optical connector according to the present invention, it is preferable that an inclined portion is provided between the protrusion insertion hole and the member opening portion of the core wire pressing member so that the pressure release protrusion in the protrusion insertion hole can easily enter the member opening portion. .

In addition, in the field assembly type optical connector according to the present invention, the core arrangement groove has an arc structure so as to be in contact with the outer peripheral surface of the core wire, it is preferable that the bottom surface of the clamp auxiliary body corresponding thereto has a flat plane structure.

In addition, in the field assembly type optical connector according to the present invention, it is preferable that the see-through windows positioned on the same line are respectively formed on the outer surfaces of the first and second housings in order to confirm that the coupling state is correct.

As described above, the field assembly type optical connector of the present invention is to cover and press the core wire pressing member to the outer periphery of the clamp body and the clamp auxiliary body and to provide the optical connector structure covered with the first and second housings thereon again. At the same time, by separately providing a pressure release member configured to release the pressurization of the core wire pressure member, by releasing the pressurization of the core wire pressure member through the pressure release member when connecting the core wire of the optical fiber in the field so that the connection between the core wires can be made stably and quickly. In addition, the pressure release member can be separated from the optical connector so that pressurization to the core wire can be made to secure the core wire securely. Gets the effect.

1 is a perspective view showing a field assembly type optical connector according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a field assembly optical connector according to an embodiment of the present invention.
Figure 3 is a schematic diagram showing a state before the core wire pressing member of the field assembly type optical connector according to an embodiment of the present invention.
Figure 4 is a schematic diagram showing a state in which the pressure is released by the core wire pressing member of the field assembly optical connector according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

As shown in Figures 1 to 4, the field assembly type optical connector according to an embodiment of the present invention is a clamp main body 10 for connecting the core wires (5a, 7a), and the clamp main body 10 is disposed The clamp auxiliary body 20 which covers the core wires 5a and 7a, the core wire pressing member 30 which presses this clamp auxiliary body 20, and presses the core wire 7a of the bottom surface, and the said clamp body ( 10) to cover the first housing 40, the second housing 50 which is joined to cover the outer surface of the rear end of the first housing 40, and the front end portion of the first housing 40 The pressure release member 70 coupled to the first housing 40 and the pressure release member 70 for releasing the pressure of the boot 60 and the core wire pressing member 30 penetrated so that the optical fiber 70 flows into the first housing 40. It is comprised to include.

The clamp main body 10 is provided with a ferrule coupling portion 11 of a cylindrical structure in which a ferrule 5 is inserted into and tightly coupled to one end thereof, and the center thereof is opened upward to open the ferrule 5 and the optical fiber in the entire center of the bottom surface thereof. A core wire placement groove 12 in which the core wires 5a and 7a of (7) are disposed is formed, and the other end thereof is formed with an optical fiber insertion portion 15 having a cylindrical structure through which the optical fiber 7 is inserted.

In addition, four corners of the clamp auxiliary body 20 are seated at each corner of the bottom surface of the clamp main body 10 so that the bottom surface of the central portion of the clamp auxiliary body 20 is spaced a predetermined distance from the bottom surface of the clamp main body 10. The mounting projections 13 to be provided are respectively provided.

The core arrangement groove 12 has an arc structure so as to be in surface contact with the outer circumferential surfaces of the core wires 5a and 7a.

Reference numeral 16 indicates a coupling protrusion for coupling the clamp body 10 and the first housing 40.

On the other hand, the outer peripheral surface of the optical fiber insertion portion 15 of the clamp main body 10 so that when the clamp main body 10 and the first housing 40 is coupled to each other, without any rattling, it is possible to maintain a firmly coupled state firmly The leaf spring 80 is arranged.

The clamp auxiliary body 20 is inserted into the open central portion of the clamp main body 10 and is formed in a flat structure with its bottom surface flat so as to cover the core wire placement groove 12.

In addition, the corner portion of the clamp auxiliary body 20 has a thin and elastic thin plate structure so as to press the core wires 5a and 7a while the center portion thereof smoothly falls down when the core wire pressing member 30 is pressed.

The core wire pressurizing member 30 wraps and presses the outer circumferential surfaces of the clamp main body 10 and the clamp assisting body 20 with its own elasticity to press the core wires 5a and 7a therein. ) Is one side of the outer circumference is cut along the entire longitudinal direction, but is provided with a projection insertion hole 31 wide open in the arc direction and the member opening portion 32 having a continuous and narrow gap with the projection insertion hole 31 is provided in the arc direction It is made of an incision pipe structure that covers and presses the clamp body 10 and the auxiliary body 20 while being elastically opened and narrowed.

In addition, between the protrusion insertion hole 31 and the member opening part 32 of the core wire pressing member 30, the pressure release protrusion 71 in the protrusion insertion hole 31 easily enters the member opening part 32. An inclined portion 73 is provided.

The first housing 40 covers the clamp body 10 to form a coupling jaw (not shown) to engage and engage the coupling protrusions 16 of the clamp body 10, and the optical fiber 7 at the front end thereof. ) Is inserted and penetrated so that the ferrule 5 is exposed to the rear end.

In addition, a through hole 41 is formed at one side of the outer surface of the first housing 40 on the same line as the protrusion insertion hole 31 of the core wire pressing member 30 to allow the pressure release protrusion 71 to pass therethrough. It is.

Reference numeral 42 denotes a spring arrangement in which the leaf spring 80 is inserted, and 43 denotes a thread for screwing the boot 60.

The second housing 50 is coupled to cover the outer end of the rear end of the first housing 40, the rear end of the second housing 50 to enter the ferrole cover (not shown) for covering the ferrule (5) protruding rearwardly To penetrate.

In addition, a through hole 51 is formed at one side of the outer surface of the second housing 50 on the same line as the projection insertion hole 31 of the core wire pressing member 30 to allow the pressure release protrusion 71 to pass therethrough. It is.

And, on the outer surface of the first and second housings (40, 50), see-through windows (44, 52) are formed on the same line in order to confirm that the coupling state is correct.

The boot 60 covers the distal end of the first housing 40 to prevent bending of the optical fiber 7 exposed to the outside of the first housing 40, and the like to protect the optical fiber 7. Coupling with the housing 40 and the central portion of the axial direction has a structure through which the optical fiber 7 is introduced into the first housing (40).

Here, the thread 61 which is screwed with the thread 43 of the first housing 40 is formed on the inner circumferential surface of the boot 60.

The pressure release member 70 is for releasing the pressure of the core wire pressing member 30, and the pressure release member 70 is a through hole (41, 51) and the core wire of the first and second housings (40, 50) When the second housing 50 is pushed in the longitudinal direction after penetrating the projection insertion hole 31 of the pressing member 30, the member opening portion 32 is moved to the member opening portion 32 and the member opening portion 32 is moved in the circumferential direction. The pressure release protrusion 71 is formed to release the pressure to the clamp auxiliary body 20 and the pressure to the core wires 5a and 7a.

Here, the pressure release member 70 has a deformed shape in which one side is open so as to cover the bottom surface and both sides of the second housing 50 when the core wires 5a and 7a are released from pressure, and both rear ends thereof. In the state in which the second housing 50 is mounted, a handle 72 is formed to fix and support the pressure release member 70 to push the second housing 50 in the longitudinal direction.

Looking at the core connection process of the field-assembled optical connector according to an embodiment of the present invention according to this configuration, first insert the ferrule (5) into the ferrule coupling portion 11 of the clamp main body 10, the core wire of the ferrule (5) (5a) is to be arranged in the core arrangement groove 12 of the clamp body (10).

Then, the clamp auxiliary body 20 is covered with the upper portion of the clamp body 10 and then coupled to the core wire pressing member 30 is wrapped thereon.

Then, the first housing 40 covers the front part of the clamp main body 10 so that the engaging projection 16 of the clamp main body 10 is caught by the engaging jaw of the first housing 40 so as to be coupled to each other.

Here, the spring arrangement portion 42 of the first housing 40 is located on the outer peripheral surface of the optical fiber insertion portion 15, which is an adjacent portion of the coupling protrusion 16, the leaf spring (80) embedded in the spring arrangement portion 42 ) Supports the elasticity between them so that they can be firmly combined with each other without any rattling.

Then, the second housing 50 is covered with the outer side of the first housing 40 to be coupled to each other.

At this time, when the first and second housings 40 and 50 are correctly coupled, the through holes 41 and 51 and the protrusion insertion holes 31 of the core pressure member 30 are placed on the same line. The coupling state can be confirmed through each viewing window 44.

In this way, the optical connector assembly of the present invention is primarily completed.

Then, when the core 7a of the optical fiber 7 and the core 5a of the ferrule 5 are to be connected, the pressure release member 70 is covered with the outer circumferential surface of the second housing 50, but the pressure is applied. Press release to direct the release projections 71 toward the through holes 41 and 51 of the first and second housings 40 and 50 and the projection insertion hole 31 of the core wire pressing member 30 on the same line. The member 70 is coupled to the second housing 50.

Then, the pressure release protrusion 71 of the pressure release member 70 penetrates the through holes 41 and 51 of the first and second housings 40 and 50 and the protrusion insertion hole 31 of the core wire pressing member 30. In this state, the grip 72 of the pressure release member 70 is fixed in such a state, and then the second housing 50 is pushed in the longitudinal direction, and the pressure release protrusion 71 in the protrusion insertion hole 31 is fixed. ) Is moved to the member opening portion 32, and the member opening portion 32 is opened in the circumferential direction to release the pressure to the clamp auxiliary body 20, whereby the clamp auxiliary body 20 that has been pressed is returned to its original shape. The bottom surface is returned to the bottom surface of the clamp main body 10 so that a predetermined distance is spaced apart from the core 7a of the optical fiber 7.

In this state, when the optical fiber 7 is inserted through the center through hole of the front end of the first housing 40, the core wire 7a is guided along the core wire placement groove 12 of the clamp main body 10 and the ferrule on the opposite side thereof. (5) It is connected to the core wire 5a.

Then, the pressure release member 70 is separated from the second housing 50 to release the pressurization of the pressure release protrusion 71, and the projection insertion hole 31 of the core wire pressing member 30 which is thus opened again. While returning to the original state, the clamp auxiliary body 20 is pressed to press the upper portions of the core wires 5a and 7a connected to each other of the core wire cover grooves 21 on the bottom thereof to be firmly fixed.

Then, in order to protect the optical fiber 7 exposed to the outside of the tip of the first housing 40, the boot 60 is screwed into the tip of the first housing 40 to connect the core wire through the optical connector of the present invention ( 5a, 7a) The connection can be completed.

In addition, when the connection of the core wires 5a and 7a is to be released again, the connection is released using the pressure release member 70 as described above, and new connections can be quickly and simply performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It should be understood that all of the techniques that can be easily changed and used by those skilled in the art are included in the technical scope of the present invention.

DESCRIPTION OF REFERENCE NUMERALS
5: ferrule 5a: core
7: optical fiber 7a: core wire
10 clamp body 11: ferrule coupling portion
12: core wire placement groove 13: seating protrusion
14: guide protrusion 15: optical fiber insertion unit
16: engaging projection 20: clamp auxiliary body
30: core wire pressing member 31: projection insertion hole
40: first housing 41: through hole
42: spring arrangement 43: thread
44: sight window 50: the second housing
51: through hole 52: viewing window
60: boot 61: thread
70: press release member 71: press release projection
72: handle 80: leaf spring

Claims (3)

The ferrule 5 is provided with a ferrule coupling part 11 into which the ferrule 5 is inserted and coupled to one end thereof, and the core wire is opened upward, and the core wires 5a and 7a of the ferrule 5 and the optical fiber 7 are arranged on the bottom thereof. A clamp body (10) having an arrangement groove (12) formed and having an optical fiber insertion portion (15) penetrated to insert the optical fiber (7) at the other end thereof; A clamp auxiliary body 20 inserted into the open center portion of the clamp body 10 and having a core wire cover groove 21 formed at a bottom thereof to cover the core wire placement groove 12; A core wire pressing member 30 for pressurizing the clamp auxiliary body 20 to press the core wires 5a and 7a of the bottom surface thereof; and covering the clamp body 10 so as to be coupled to the clamp body 10 and to a tip end thereof. A first housing 40 having a spring arrangement 42 disposed on an outer circumferential surface of the optical fiber insertion portion 15 and penetrating so that the optical fiber 7 is inserted and the ferrule 5 is exposed to a rear end thereof; the first housing 40 A second housing 50 coupled to cover an outer surface of a rear end portion of the first housing; and a first housing 40 coupled to the first housing 40 by covering the front end of the first housing 40, and the optical fiber 7 being coupled to the first housing 40. Boot 60 penetrated to enter); A pressure release member (70) for releasing the pressure on the core wire pressing member (30); And a leaf spring (80) inherent in a spring arrangement (42) located on an outer circumferential surface of the optical fiber insertion portion (15) so that the coupling between the clamp body (10) and the first housing (40) is firmly coupled without any rattling. );
The core wire pressing member 30 has one side of the outer circumferential surface thereof cut along the entire longitudinal direction, and a member insertion part 32 having a continuous and narrow gap with the protrusion insertion hole 31 and the protrusion insertion hole 31 widened in an arc direction. Is provided and is elastically opened and narrowed in the arc direction to cover the clamp body (10) and the auxiliary body 20 to cover the pressurized pipe structure, and the first and second housings in the same line as the projection insertion hole (31) Through holes 41 and 51 are formed at one side of the 40 and 50, respectively, and the pressure release member 70 includes through holes 41 and 51 and core wire pressure of the first and second housings 40 and 50, respectively. After penetrating the protrusion insertion hole 31 of the member 30 and pushing the second housing 50 in the longitudinal direction, the member opening portion 32 is moved to the member opening portion 32 and the member opening portion 32 is opened in the circumferential direction. It is characterized in that it is further provided with a pressure release projection (71) to release the pressure on the clamp auxiliary body 20 and the pressure of the core wire (5a, 7a) Field assembly optical connector. The method of claim 1,
The pressure releasing member 70 has a recessed shape in which one side is open so as to cover the bottom and both sides of the second housing 50 when the core wires 5a and 7a are released from pressure. Field-assembled light, characterized in that the handle 72 is provided for holding and holding the pressure release member 70 in order to push the second housing 50 in the longitudinal direction while the second housing 50 is mounted. connector. The method according to claim 1 or 2,
Field assembly type optical connector, characterized in that formed on the outer surface of the first and second housings (40, 50), respectively, see-through windows (44, 52) positioned on the same line to confirm that the coupling state is correct.

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