KR100821298B1 - Field-assembled optical connector with improved fiber fixing - Google Patents

Abstract

The present invention relates to a field-assembled optical connector with improved optical fiber fixing means, to visually check the connection state between the cores of the optical fiber through a transparent capillary tube, and to secure the optical fiber inside the connector body through the fixing means. The purpose of the present invention is to provide a field-assembled optical connector with an improved optical fiber fixing means which increases connection strength, prevents signal loss caused by mismatching of core wires, and prevents defects from occurring in the connection state of core wires.

According to the present invention, there is provided a V-glove 50 for feeding the optical fiber 8 passing therein, and a connector body 40 having hook insertion holes 48 formed at both sides of the V-glove 50; The hooks inserted into the hook insertion holes 48 are configured at both lower ends thereof, and the lower surface thereof has a snap fit 80 for fixing the upper outer periphery of the optical fiber 8, and the optical fiber is formed inside the optical connector. It can be fixed so that the signal loss does not occur.

According to the present invention, the capillary tube passing the optical fiber through the center receiving hole can be confirmed from the outside, so that the connection state of the optical fiber housed inside can be easily checked, and optical signal loss can be achieved by using the snap fit. Since the optical fiber can be fixed inside the connector in a minimized state, it is possible to maintain an excellent connection state.

Description

FIELD INSTALLABLE OPTICAL FIBER CONNECTOR WITH A OPTICAL FIBER FIXING MEANS

1 is a schematic view illustrating an exploded component of an optical connector according to a conventional embodiment;

2 is an assembly outline view of an optical connector according to a conventional embodiment,

Figure 3 is an exploded front cross-sectional view of the components of the optical fiber fixing means improved field assembly optical connector according to an embodiment of the present invention;

Figure 4 is an assembly cross-sectional view showing the field assembly optical connector is improved optical fiber fixing means according to an embodiment of the present invention,

5 is an assembled perspective view of a part of the field-assembled optical connector is improved optical fiber fixing means according to an embodiment of the present invention,

6a and 6b illustrate a snap fit detachable to an field assembly type optical connector with improved optical fiber fixing means according to an embodiment of the present invention;

Figure 7 is a side cross-sectional view showing a coupling state of the snap-fit coupled to the field-assembled optical connector is improved optical fiber fixing means according to an embodiment of the present invention,

Figure 8 is a side cross-sectional view showing a snap-fit coupling state of another structure coupled to the optical fiber fixing means improved field-assembled optical connector according to an embodiment of the present invention,

9 is a side cross-sectional view showing a snap fit coupling state of another structure in which an optical fiber fixing means is coupled to an improved field-assembled optical connector according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

16: cover, 18: housing,

20: ferrule protective cap, 32: ferrule,

34: capillary tube, 40: connector body,

46: confirmation window, 48: hook insertion hole,

50: V-globe, 60: spring,

70: frame, 76: confirmation window,

78: incision, 80: snap fit,

82: Hook, 100: Outdoor sun clipper.

The present invention relates to an field assembly type optical connector with improved optical fiber fixing means, and more particularly, an optical fiber configured to firmly fix an optical fiber passing through the optical connector by having a fixing means for fixing the optical fiber inside the optical connector. A field assembly type optical connector with improved fastening means.

As is well known, optical connectors generally used for the connection of optical fibers, which are transmission media for optical communications, are widely used in optical links such as various communication devices, precision measuring instruments, audio and video devices, and sensors.

The optical connector is an optical device that mutually interconnects different optical fibers so that their central axes coincide with each other so that optical communication is possible. When the optical connector is used, connection loss is relatively lower than that of permanent connection such as fusion splicing. Larger and more difficult to manufacture optical connectors, but due to the advantages that they can be easily disconnected and connected to each other and can be repeatedly connected several times, they are currently used for optical fiber distribution boards or optical end devices with fiber or between optical fiber cables. Or an input / output terminal such as an optical measuring device.

In general, the termination and assembly of the optical connector is mostly done in the manufacturing plant. Recently, due to the expansion of the FTTH (Fiber To The Home) service, a part of the optical connector is pre-processed and assembled to provide quick and easy response at the line site when connecting a plurality of optical fibers. Field-assembled optical connectors are available that can be connected to the optical connector by simple stripping and cutting.

For example, the field-assembled optical connector of the prior art will be described in detail with reference to the accompanying drawings.

As shown in Figs. 1 and 2, the field assembly type optical connector of the prior art includes a ferrule 10 having a receiving hole 10a for accommodating an optical fiber 8 (see Fig. 4, below), and the ferrule. A spring 12 which covers the outer peripheral surface of the rear end of the 10, a stopper 14 which covers the spring 12 and is coupled to the rear end of the ferrule 10, a rear end and a stopper of the ferrule 10; Ferrule protection covering the frame 16 which covers the outer periphery of the front end of 14, the housing 18 which covers this frame 16, and the front end of the ferrule 10 exposed to the outside of this housing 18. A cap 20, a core wire guide portion 22 coupled to the rear end of the ferrule 10 exposed outside the stopper 14, and a boot 24 covering the outside of the core wire guide portion 22; It is comprised to include.

The ferrule 10 has a cylindrical shape, and an accommodating hole 10a is formed in the ferrule 10 to accommodate and fix the optical fiber 8 therein, and the spring 12 is elastically supported at the middle portion of the outer circumferential surface thereof. The protruding flange 10b is formed.

In the present specification, the portion where the core wire 8a (see FIG. 4, described below) of the optical fiber 8 is connected to the flange 10b of the ferrule 10 is referred to as the rear end of the ferrule.

The spring 12 is disposed to cover the outer circumferential surface of the rear end of the ferrule 10 based on the flange 10b of the ferrule 10 and is caught by the flange 10b to elastically press the ferrule 10 to the front end side. It is structured.

The stopper 14 covers the outside of the rear end of the spring 12 and the ferrule 10, and the inner circumferential surface of the front end thereof is tightly coupled to the outer circumferential surface of the flange 10b to elastically support the spring 12.

The frame 16 covers the tip of the ferrule 10 and the outer circumference of the tip of the stopper 14 to fix and support the stopper 14, and the outer circumferential surface of the frame 16 is engaged with the coupling hole 18a of the housing 18. The projection 16a is formed.

The housing 18 has a tubular shape covering the outer circumferential portion of the frame 16, and a coupling hole 18a is formed at a predetermined portion of the outer circumferential surface thereof to engage the engaging projection 16a of the frame 16.

The ferrule protective cap 20 is cap-shaped to cover and protect the front end of the ferrule 10 exposed to the outside of the housing 18.

The core wire guide part 22 is coupled to a rear end of the ferrule 10 exposed to the outside of the stopper 14 to guide the core wire 8a inserted into the receiving hole 10a of the ferrule 10 ( 22a) is formed, and a locking projection 22b is formed on the outer circumferential surface of the locking projection 24a of the boot 24.

The boot 24 covers the outside of the core guide portion 22 and has a locking jaw 24a formed at one end of the inner circumferential surface so as to catch the engaging protrusion 22b of the core guide 22. After applying the adhesive is bonded to the outer periphery of the core guide portion 22 and then pressed using a finger or a separate tool to fix the optical fiber (8).

The optical connector of the prior art according to this configuration is arranged to cover the frame 16 to the front end side of the ferrule 10 by arranging the spring 12 on the outer peripheral surface of the rear end of the ferrule 10 and then covering it with the stopper 14. 14) and cover the housing 18 with the outer periphery of the frame 16, and then cover the ferrule protective cap 20 on the tip of the ferrule 10 exposed to the outside of the housing 18, the stopper The rear end of the ferrule 10 exposed to the outside of 14 to couple the core guide portion 22 to complete the assembly of the optical connector for connecting the core wire (8a).

Here, the core wire 8a, which is short-circuited, is already disposed in the accommodation hole 10a in the rear end of the ferrule 10 exposed to the outside of the stopper 14.

In this state, the sheath of the new optical fiber 8 is peeled off, and a separate connector (not shown) is used, or the optical fiber 8 is grasped with bare hands, and the core wire 8a is guided by the guide hole 22a of the core wire guide part 22. Insert into the rear end accommodating hole (10a) of the ferrule 10 and then apply an adhesive to the inner circumferential surface of the boot (24) to cover the outside of the core wire guide portion 22 to combine and then to the outer circumferential surface of the boot (24) Pressing with a finger to fix the optical fiber 8 is not to move to complete the connection of the core wire (8a) of the optical fiber 8 using the field assembly optical connector of the prior art.

However, in the field assembly type optical connector according to the related art, since the inside of the receiving hole 10a of the ferrule 10 is not visible, the operator cannot accurately recognize the state in which the core wires are connected to each other, so that the poor connection of the core wire 8a is prevented. Had problems such as occurrence.

In particular, the above-described field assembly type optical connector of the prior art passes only the optical fiber 8 through the ferrule 10, the core guide portion 22, and the boot 24, and passes the optical fiber 8 inside the optical connector. Could not be fixed at Therefore, there is a problem that the optical connector having such a structure is very likely to cause a defect in the connection state of the optical core 8a after the optical connecting operation.

The present invention has been made in view of the above-described state of the art, and it is possible to visually check the connection state between the core wires of the optical fiber through the transparent capillary tube, and by firmly fixing the optical fiber inside the connector body through the fixing means The purpose of the present invention is to provide a field-assembled optical connector with improved optical fiber fixing means which increases the connection strength, prevents the loss of the signal caused by mismatched wires, and prevents the defects from occurring in the connection state of the core wires.

In order to achieve the above object, according to a preferred embodiment of the present invention and the ferrule 32 is formed in the receiving hole 32a for receiving the optical fiber 8 therein; A cover 16 covering the outer periphery of the rear end of the ferrule 32; A frame 70 inserted into an outer circumference of the front end of the cover 16 and coupled to surround the connector body 40; A portion of the rear end of the ferrule 32 is inserted into the frame 70, and a capillary tube 34 in close contact with the ferrule 32 is inserted therein, and then into the frame 70. A connector body (40) provided with a V-glove (50) for introducing the optical fiber (8) passing therethrough, and hook insertion holes (48) formed at both sides of the V-glove (50); A hook inserted into the hook insertion hole 48 is formed at both sides of a lower end thereof, and a bottom surface thereof includes a snap fit 80 for fixing an upper outer periphery of the optical fiber 8; A spring 60 disposed on an outer periphery of the rear end of the connector body 40; A connector body (40) partially protruding to the rear end of the frame (70) is coupled to the front end thereof, and an outdoor optical fiber clipper (100) for clipping the outdoor optical fiber; The cover 16 and the frame 70 is configured to include a housing 18 coupled to be inserted therein, characterized in that the optical fiber can be fixed to the inside of the optical connector so that no signal loss occurs. An on-site assembly type optical connector with improved optical fiber fixing means is provided.

Preferably, the connector body 40 has a confirmation window 46 for confirming the capillary tube 34 embedded therein is formed in the outer peripheral portion, the frame to match the confirmation window 46 The field assembly type optical connector with improved optical fiber fixing means, characterized in that the confirmation window 76 is formed at the outer peripheral predetermined portion of the 70.

Preferably, the frame 70 is coupled to the hook 82 of the snap-fit 80 to the hook insertion hole 48 of the connector body 40 accommodated inside the frame 70, the predetermined portion of the outer periphery The field assembly type optical connector with improved optical fiber fixing means, characterized in that the cut hole 78 is formed to be provided.

Preferably, both side corners 49 of the surface where the V-glove 50 is formed are formed in a vertical shape, and the bottom surface of the snap-fit 80 in close contact with the corner portion 49 is a rounded portion 84. By providing the field assembly type optical connector improved by the optical fiber fixing means, characterized in that the optical fiber 8 is not pressed by the snap-fit 80 over a certain strength.

Preferably, in the center of the lower surface of the snap-fit opposing the V-glove 50, the concave groove 86 is formed in close contact with the upper outer periphery of the optical fiber 8 is improved field assembly Type optical connectors are provided.

Preferably, the snap fit is formed in the upper groove of the pressing recess 92 is formed, the upper side of each of the snap fit upper divided surface 90 is formed on both sides of the pressing recess 92, the lower both sides A hook 82 extending from the body is formed, and an inner surface of the hook 82 is formed with a sliding surface 88 which is in contact with the surface on which the V-glove 50 formed on the connector body 40 is formed. In the center of the lower surface of the snap fit is formed with a pressing protrusion 94 in close contact with the upper outer periphery of the optical fiber 8, the restoring force of the hook 82 when the snap fit is coupled to press both sides of the V-glove 50 Provided is an on-site assembly type optical connector with improved optical fiber holding means characterized in that the fixing force of the optical fiber is improved.

Preferably, the slide surface 88 is a field assembly type optical connector with improved optical fiber fixing means, characterized in that the round surface formed so that the gap between the hooks 82 on both sides becomes narrower from the bottom to the top do.

Preferably, the bottom surface of the V-glove 50 formed in the connector body 40 is formed with the pressing groove 51 in the lower direction, the V-glove 50 in the space of the pressing groove 51 receives the pressing force of both sides. Provided is an on-site assembly type optical connector with improved optical fiber fixing means which can be easily narrowed by means of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings.

3 is an exploded front sectional view in which the components of the field-assembled optical connector with improved optical fiber fixing means according to an embodiment of the present invention are exploded, and FIG. 4 is an improved optical fiber fixing means according to an embodiment of the present invention. An assembly cross-sectional view showing a field assembly optical connector.

Referring to this, the field-assembled optical connector is an improved optical fiber fixing means according to an embodiment of the present invention to visually check the connection state between the core wires of the optical fiber through the transparent capillary tube, the optical fiber fixing means It is an optical connector that firmly fixes the inside of the connector body to increase connection strength, prevent loss of signal caused by mismatch of core wires, and prevent defects in the connection state of core wires.

To this end, the field assembly type optical connector with improved optical fiber fixing means according to an embodiment of the present invention includes a ferrule 32 formed with a receiving hole (32a) for receiving the optical fiber 8 therein; A cover 16 covering the outer periphery of the rear end of the ferrule 32; A frame 70 having a front end outer circumferential edge inserted into the rear end of the cover 16 and surrounding the connector body 40 and having a confirmation window 76 and a cutout 78 formed at a predetermined outer circumferential edge thereof; A portion of the rear end of the ferrule 32 is inserted into the frame 70, and a capillary tube 34 in close contact with the ferrule 32 is inserted therein. A confirmation window 46 for confirming the filler tube 34 is formed, and a V-glove 50 is provided to infiltrate the optical fiber 8 passing therein, and hooks are provided at both sides of the V-glove 50. A connector body 40 having an insertion hole 48 formed therein; A spring 60 disposed on an outer periphery of the rear end of the connector body 40; The connector body 40 which partially protrudes to the rear end of the frame 70 is coupled, and the outdoor fiber clipper 100 for clipping the outdoor optical fiber, and the cover 16 and the frame 70 are coupled to be inserted therein. It consists of a configuration including a housing (18).

The ferrule 32 has a cylindrical shape, and an accommodating hole 32 a is formed in the inside of the ferrule 32 to receive and fix the optical fiber 8, and is disposed in a straight line with the ferrule 32 at the rear end thereof. It is in close contact with the rear end of the ferrule 32 and fixed to the optical fiber 8 through the receiving hole (34a) inside and made of a transparent material to check the receiving state and the core connection state of the optical fiber (8) contained therein A capillary tube 34 is provided. At this time, the diameter of the capillary tube 34 is configured to be smaller than the diameter of the ferrule 32, the capillary tube 34 is resistant to deterioration because it is excellent in heat resistance, using a matching gel Compensation for the change of the refractive index of the two optical fibers 8 connected therein is made to compensate, and the signal loss is minimized because of excellent tensile and vibration resistance.

In addition, the connector body 40 is similarly formed in a cylindrical shape, and the capillary tube 34 is inserted and received therein, and the rear end portion of the ferrule 32 is provided at the front side of the capillary tube 34. Insertion holes 42 having different diameters are formed therein so that the inserts are inserted, and the inner circumference of the connector body 40 using an adhesive is formed on the outer periphery of the rear end of the ferrule 32 inserted into the connector body 40. To adhere to it.

A plurality of protrusions 44 are formed on the outer periphery of the front end portion of the connector body 40, respectively. The connector body 40 is formed inside the frame 70 by using the protrusions 44. Insertion is fixed.

In addition, the connector body 40 is cut from the outer peripheral portion to the insertion hole 42 in which the capillary tube 34 is accommodated, and a confirmation window for visually confirming the capillary tube 34. 46 is provided, on the central axis of the rear end of the confirmation window 46, there is formed a V-glove 50 for recessing and fixing the optical fiber 8 passing through the connector body 40. Hook insertion holes 48 for inserting the hooks 82 of the snap-fit 80 are formed on both sides of the V-glove 50, respectively.

Therefore, when the hook 82 of the snap-fit 80 is inserted into the hook insertion hole 48, the V-glove 50 is retracted to the center, and thus the optical fiber injected into the V-glove 50 8) is fixed.

On the other hand, the connector body 40 is formed with a spring gauge groove 52 for gripping the spring 60 on the outer peripheral edge of the hook insertion hole 48, the outer edge of the rear end of the spring cage groove 52 A protrusion 54 penetrating the inside of the frame 70 to be exposed to the rear end of the frame 70 and coupled to the outdoor line clipper 100 is formed.

At this time, the spring 60 is in the state of being placed on the outer periphery of the rear end spring gage groove 52 of the connector body 40, so that the rear end of the connector body 40 is inserted into the frame 70, The spring 60 acts to spring the frame 70 to the right.

In the state in which the frame 70 accommodates the connector body 40 therein, a portion of the front end of the frame 70 is inserted into and coupled to the rear end of the cover 16, and the frame 70 is sheared. Coupling grooves 72 are formed on the outer circumferential edges of the protrusions 44 formed at the front outer circumferences of the connector body 40, and the outer end of the coupling grooves 72 is formed on the outer periphery of the cover 16. The protrusion 74 coupled to the groove is formed to protrude.

In addition, a confirmation window 76 corresponding to the confirmation window 46 of the connector body 40 inserted into the frame 70 is cut in an outer peripheral predetermined portion of the frame 70. The rear end of the confirmation window 76 is formed with a cutting hole 78 cut in a square shape so that the hook 82 of the snap-fit 80 can be inserted into the hook insertion hole 48 of the connector body 40 have.

Therefore, when the connector body 40 is inserted into the frame 70, the confirmation window 46 formed on the connector body 40 and the confirmation window 76 formed on the frame 70 coincide with each other. The capillary tube 34 accommodated in the connector body 40 can be confirmed through the respective confirmation windows 46 and 76. Similarly, the hook 82 of the snap fit 80 may be coupled to the hook insertion hole 48 exposed to the outside through the cut hole 78 formed in the frame 70.

5 is a partially assembled perspective view of the field-assembled optical connector with improved optical fiber fixing means according to an embodiment of the present invention.

5 is a perspective view illustrating only the connector body 40 and the frame 70 and the cover 16 constituting the improved field-assembled optical connector according to an embodiment of the present invention. When the connector body 40 is coupled to the frame 70, and the front end of the frame 70 is coupled to the cover 16, the connector body 40 is coupled in a coupling state as shown in FIG. 5.

As shown in Figure 5, through the incision hole 16b formed on the upper surface of the cover 16, the confirmation window 76 of the frame 70 coupled to the lower part is exposed to the naked eye, the confirmation window Since the confirmation window 46 of the connector body 40 is exposed to the naked eye in the interior of the 76, the capillary tube 34 accommodated in the connector body 40 through each of the confirmation windows 46 and 76. It can be confirmed, and the fixed state of the optical fiber 8 fixed by the capillary tube 34 can be visually confirmed.

In addition, as shown in the figure, the hook insertion hole 48 of the connector body 40 accommodated in the interior of the frame 70 through the cut hole 78 formed in the upper surface of the frame 70 is snap-fit The hook 82 of 80 is exposed to the outside for insertion.

6A and 6B are views illustrating a snap fit detachable to an field assembly type optical connector having an improved optical fiber fixing means according to an embodiment of the present invention, and FIG. 7 is a view illustrating an optical fiber fixing means according to an embodiment of the present invention. Side cross-sectional view showing the mating state of a snap fit coupled to an improved field assembly optical connector.

Referring to this, the snap-fit 80 constituting the field assembly type optical connector with improved optical fiber fixing means according to an embodiment of the body is configured in the form of a tunnel, the lower side of each of the connector body The hook 82 inserted into the hook insertion hole 48 of the 40 is formed.

At this time, as shown in Figure 7, each hook insertion hole 48 to which the hook 82 of the snap-fit 80 is coupled has a vertical corner portion 49, while close to the corner portion 49 The lower surface of the snap-fit 80 is made of a rounded portion 84, the lower surface of the snap-fit 80 by pressing the optical fiber 8 downward by a predetermined or more due to the coupling of the snap-fit 80, the signal loss Do not cause this.

That is, due to the round portions 84 formed on both sides of the bottom surface of the snap-fit 80, when the hook 82 of the snap-fit 80 is coupled to the hook insertion hole 48, the V-glove 50 It is formed between the surface and the bottom surface of the snap-fit 80 is formed a predetermined space and the bottom surface of the snap-fit 80 due to the space does not crush the optical fiber 8 inserted into the V-glove (50).

Therefore, when the hook 82 of the snap fit 80 is coupled to the hook insertion hole 48, the bottom surface of the snap fit 80 fixes the upper outer periphery of the optical fiber 8, and the optical fiber 8 The lower outer circumference of the) is fixed to the optical fiber 8 in a three-sided fixed manner is inserted into the V-glove 50 is fixed. This three-side fixing method can securely fix the optical fiber 8 inside the optical connector in a state in which the optical signal loss of the optical fiber 8 is minimized.

8 is a side cross-sectional view showing a snap-fit coupling state of another structure in which the optical fiber fixing means is coupled to the improved field-assembled optical connector according to an embodiment of the present invention.

Referring to this, the snap-fit (80 ') constituting the field assembly type optical connector with improved optical fiber fixing means according to an embodiment of the body is formed in the form of a tunnel, both sides of the lower connector The hook 82 inserted into the hook insertion hole 48 of the body 40 is formed. In this case, the center of the lower surface of the snap fit 80 ′ is in close contact with the upper outer periphery of the optical fiber 8 and the optical fiber ( A recess groove 86 for fixing 8 is formed.

The wider the contact surface of the snap-fit 80 'for fixing the optical fiber 8, the more the fixed pressure applied to the optical fiber 8 is dispersed, thereby minimizing signal loss of the optical fiber 8, 8) is less likely to break. Accordingly, preferably, as shown in FIG. 8, the recessed groove 86 through which the upper outer periphery of the optical fiber 8 is recessed is formed on the lower surface of the snap fit 80 ′.

9 is a side cross-sectional view showing a snap-fit coupling state of another structure in which the optical fiber fixing means is coupled to an improved field-assembled optical connector according to an embodiment of the present invention.

Referring to this, the snap-fit (80 ″) constituting the field-assembled optical connector with improved optical fiber fixing means according to an embodiment of the present invention, the body is configured in the form of a bow, that is, the upper surface of the body The depression groove 92 is formed, and the snap-fit upper division surface 90 is formed on both sides with respect to the depression groove 92, respectively.

In addition, hooks 82 extending from the body are formed on both sides of the lower ends of the snap-fits 80 ', and inner surfaces of the hooks 82 are formed on the surface of the V-glove 50 formed on the connector body 40. The sliding surface 88 which contacts is comprised. The sliding surface 88 is composed of a round surface formed such that the gap between the hooks 82 on both sides becomes narrower from the lower portion to the upper portion, and the optical fiber 8 is formed at the center of the lower surface of the snap fit 80 ″. The pressing protrusion 94 in close contact with the upper outer circumference of the is formed.

In addition, the bottom surface of the V-glove 50 formed in the connector body 40 is formed with a recessed groove 51 in the downward direction.

When the snap-fit 80 "having such a configuration presses the upper surface thereof (in the direction of arrow ①), the hooks 82 at both lower ends thereof are inserted into the hook insertion holes 48 formed in the connector body 40. , The sliding surface 88 formed on the inner surface of the hook 82 is forcibly opened by the corner portion 49 (②, ③ arrow direction). Then, since the restoring force to be restored to the circular shape of the hook 82 is generated, the sliding surface 88 is to press the edge portion 49 on both sides (4 arrow direction).

Therefore, when the restoring force of the hook 82 presses the edge portions 49 of both sides, the V-glove 50 is pressed toward the central axis due to the space of the pressing recess 51 formed in the lower portion. Through this, the optical fiber 8 is more firmly fixed to the V-glove 50, and at the same time, the pressing protrusion 94 formed at the center of the lower surface of the snap fit 80 " Pressurization results in a more rigid three-side fixation.

Similarly, this three-side fixing method can securely fix the optical fiber 8 inside the optical connector while minimizing the optical signal loss of the optical fiber 8.

On the other hand, the field-assembled optical connector with improved optical fiber fixing means according to an embodiment of the present invention is not limited to the above embodiment, but various modifications can be made without departing from the technical gist of the invention.

As described above, the field assembly type optical connector with improved optical fiber fixing means according to the present invention can check the capillary tube passing the optical fiber through the center receiving hole from the outside, thereby checking the connection state of the optical fiber housed therein. It can be easily confirmed, and the optical fiber can be fixed inside the connector in a state where the optical signal loss is minimized by using the snap fit, thereby maintaining an excellent connection state.

Claims (8)

A ferrule 32 having a receiving hole 32a for receiving the optical fiber 8 therein; A cover 16 covering the outer periphery of the rear end of the ferrule 32; A frame 70 inserted into an outer circumference of the front end of the cover 16 and coupled to surround the connector body 40; A portion of the rear end of the ferrule 32 is inserted into the frame 70, and a capillary tube 34 in close contact with the ferrule 32 is inserted therein, and then into the frame 70. A connector body (40) provided with a V-glove (50) for introducing the optical fiber (8) passing therethrough, and hook insertion holes (48) formed at both sides of the V-glove (50); A hook inserted into the hook insertion hole 48 is formed at both sides of a lower end thereof, and a bottom surface thereof includes a snap fit 80 for fixing an upper outer periphery of the optical fiber 8; A spring 60 disposed on an outer periphery of the rear end of the connector body 40; A connector body (40) partially protruding to the rear end of the frame (70) is coupled to the front end thereof, and an outdoor optical fiber clipper (100) for clipping the outdoor optical fiber; The cover 16 and the frame 70 is configured to include a housing 18 coupled to be inserted therein, characterized in that the optical fiber can be fixed to the inside of the optical connector so that no signal loss occurs. Field assembly type optical connector with improved optical fiber fixing means. According to claim 1, wherein the connector body 40 has a confirmation window 46 for confirming the capillary tube 34 embedded therein is formed in the outer peripheral portion, and coincides with the confirmation window 46 Field assembly type optical connector with improved optical fiber fixing means, characterized in that the confirmation window 76 is formed in the outer peripheral predetermined portion of the frame (70). The hook (82) of the snap-fit (80) of claim 1, wherein the frame (70) is a hook insertion hole (48) of the connector body (40) accommodated inside the frame (70) at a predetermined portion of its outer circumference. Improved field assembly optical connector, characterized in that the cutting hole 78 is formed so that it can be coupled. According to claim 1, wherein both corners 49 of the surface formed with the V-glove 50 is formed in a vertical shape, the lower surface of the snap-fit 80 in close contact with the corner portion 49 is a rounded portion ( 84) field assembly type optical connector with improved optical fiber fixing means, characterized in that the optical fiber (8) by the snap fit (80) does not press more than a certain strength. The optical fiber fixing means according to claim 1, wherein the concave groove 86 is formed at the center of the lower surface of the snap fit so as to face the V-glove 50 and to be in close contact with the upper outer periphery of the optical fiber 8. Field-assembled optical connector. According to claim 1, wherein the snap fit is formed on the upper surface of the pressing recess 92, the upper side of the snap recess 92 is formed on each side of the snap fit upper divided surface 90, Hooks 82 extending from the lower body are formed on both sides of the lower end thereof, and an inner surface of the hook 82 includes a sliding surface 88 which contacts the surface on which the V-glove 50 formed on the connector body 40 is formed. In the center of the lower surface of the snap-fit, the pressing projection 94 is in close contact with the upper outer periphery of the optical fiber 8, so that the restoring force of the hook 82, which is opened when the snap-fit is engaged, Field assembly type optical connector with improved optical fiber fixing means characterized in that to increase the fixing force of the optical fiber by pressing both sides. 7. The field assembly type light having improved optical fiber fixing means according to claim 6, wherein the sliding surface 88 is a round surface formed such that the distance between the hooks 82 on both sides becomes narrower from the lower part to the upper part. connector. The bottom surface of the V-glove 50 formed in the connector body 40 is formed with a pressing groove 51 in the lower direction to receive the pressing force of both sides of the V-glove 50 of the pressing groove 51 The field assembly type optical connector with improved optical fiber fixing means, which can be easily narrowed by space.

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