KR101820427B1 - Optical connector - Google Patents

Abstract

The present invention relates to a connector comprising a connection portion including a connection groove, a cover portion including an outer surface formed with a protruding locking region, a first insertion portion formed on one of the opposite ends of the connection portion, 2 body including an insert; A holder slidably fitted in the connection portion and the lid portion and including an inner upper surface contacting the outer surface of the connection portion and an inner lower surface and an inner side surface in contact with the lock region of the lid portion; And a guide slot formed on the inner side surface of the holder and extending along the longitudinal direction of the holder to guide and guide the guide protrusion, And an unlocking area for increasing the vertical distance from the inner upper surface of the holder to the contact of the guide slot and the guide protrusion in the longitudinal direction of the holder with respect to the vertical direction, It is possible to minimize the deformation of the connecting portion or the lid portion due to the pressing of the protrusion by eliminating the protrusion structure formed in the connecting portion or the lid portion necessary for ensuring the clearance between the connecting portion and the lid portion.

Description

Optical connector

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber plug and an optical connector including the same, and more particularly, to a plug for an optical fiber including a boot for fixing an optical cable when the screw cap is screwed, and an optical connector including the same.

The communication technology that connects to the fiber-optic cable from the telephone office to the communication room of the large building is called FTTO (Fiber To The Office).

In recent years, a fiber to the home (FTTH) system has been developed to provide various kinds of information including broadcasting and communication by connecting a subscriber unit with a fiber optic cable to a new apartment or even a general house.

The work of installing the FTTH system includes an operation of connecting the optical terminal box installed in the communication room of the apartment to the subscriber unit of the home by optical cable.

The operator observes the distance from the optical fiber terminal box to the subscriber unit in the house, and installs an optical cable of a few meters (m) longer than the actually measured distance from the optical terminal box to the subscriber unit in the house. Then, the operator connects the optical connector to both ends of the optical cable, and connects each optical connector to the optical terminal box and each of the subscriber units in the house.

At this time, optical connectors such as LC, ST, FC, and SC optical connectors are widely used in connecting the optical cable to the optical terminal box or the optical cable and the subscriber unit in the home.

On the other hand, most optical connectors, such as LC, ST, FC and SC optical connectors, are not suitable for on-site installation and have difficulties in connecting the optical fibers in the field.

Japanese Unexamined Patent Application Publication No. 10-1041953 (published on Jun. 9, 2011, hereinafter referred to as "the present document") proposes an optical connector. The optical connector of this document has an optical connecting member including a connecting groove for receiving an optical fiber of the optical cable. The lid is coupled to the optical connecting member to fix the optical fiber accommodated in the connecting groove. At this time, the holder is pressed to fix the optical connecting member and the lid.

Such a holder is configured to move along the longitudinal direction of the optical connecting member, and functions to lock the optical connecting member and the cover according to their positions to lock and unlock the lock.

However, even if the holder is in the unlocked position, since the entrance of the connecting groove is narrow, there is a great risk that the optical cable is damaged in the process of installing the optical fiber of the optical cable in the optical connecting member.

Accordingly, it is an object of the present invention to provide an optical connector capable of minimizing damage to an optical cable and minimizing deformation of a connecting portion and a cover during a process of installing the optical cable.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a connector comprising: a connection portion including a connection groove; a cover portion including an outer surface formed with a protruding locking portion; a first insertion portion formed at one end of the connection portion; An inner upper surface which is slidably fitted to the connecting portion and the lid portion and is in contact with the outer surface of the connecting portion, and an inner lower surface which is in contact with the locking portion of the lid portion; And a guide protrusion formed on a side surface of the lid unit and recessed on an inner side surface of the holder and formed along the longitudinal direction of the holder so that the guide protrusion is inserted and guided Wherein the guide slot is formed at an inner upper surface of the holder with respect to a vertical direction, It is possible to provide an optical connector comprising an unlocking region in which the vertical distance of the guide protrusion contacts group increases toward the longitudinal direction of the holder.

Preferably, the guide protrusions may be formed on both sides of the lid.

Preferably, the guide projection may be formed at an end of the lid portion facing the first insertion portion.

Preferably, the unlocking region may protrude from an upper side wall of the guide slot.

Preferably, a curved surface portion for enlarging the entrance size may be formed at the both side entrance of the guide slot.

Preferably, the lid portion may include a guide groove recessed and aligned with both ends of the connection groove.

Preferably, the holder may include an insertion guide portion formed to be inclined downward at an end of the inner bottom surface to guide insertion of the cover portion.

Preferably, the end of the first insert may include a collet type grip part.

Preferably, the lid part includes an insertion block protruding from an edge, and the connection part may include an insertion slot into which the insertion block is inserted.

Preferably, the vertical distance (h) from the inner upper surface of the holder to the contact point of the guide slot and the guide protrusion can be calculated by the following equation (1).

&Quot; (1) "

h = H-r + t (t? 0.1)

Here, H is the vertical distance from the inner upper surface of the holder to the center of the guide projection, r is the radius of the guide projection, and t is the clearance of the connecting portion and the cover portion.

According to one embodiment of the present invention, the guide protrusion formed on the lid portion and the guide slot formed on the holder mutually act to open the gap between the connecting portion and the lid portion while the holder moves, It is possible to eliminate the protrusion structure formed in the connection portion or the cover portion necessary for securing the gap of the portion.

That is, in order to insert the optical cable into the connection groove of the connection portion, the connection portion and the lid portion are required to have some clearance at the entrance of the connection groove. According to the embodiment of the present invention, a separate structure such as a protrusion, . Thereby providing an advantageous effect of minimizing the deformation of the connecting portion or the cover portion due to the pressing of the projection.

1 shows an optical connector according to a preferred embodiment of the present invention,
Figure 2 shows a connection,
3 is a view showing a connection groove,
Figure 4 shows the locking area of the connection,
Figure 5 shows a holder,
Fig. 6 is a sectional view of the holder shown in Fig. 5,
Fig. 7 is a front view of the holder shown in Fig. 5,
8 is a view showing a gap between the connecting portion and the lid portion.
9 is a view showing a guide slot of a holder,
10 is a view showing the position of a guide slot,
11 shows the unlocked state,
12 is a view showing a state in which a gap is secured between the connecting portion and the lid portion due to the holder in the state of Fig. 11,
13 is a view showing a fixed state,
Fig. 14 is a view showing a state in which the connecting portion and the lid portion are fixed by the holder in the state of Fig. 12;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. The terms and words used in the present specification and utility model registration claims should not be construed to be limited to ordinary or dictionary meanings and the inventor must design the concept of the term appropriately in order to describe its own invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

1 is a view showing an optical connector according to a preferred embodiment of the present invention. It will be apparent to those skilled in the art from this disclosure that Fig. 1 clearly shows only the main feature parts in order to clearly illustrate the invention, and as a result various variations of the illustration are to be expected and the scope of the invention There is no.

Referring to FIG. 1, an optical connector according to an exemplary embodiment of the present invention may include a body 100 and a holder 200.

First, the body 100 may include a connection part 110, a lid part 120, a first insertion part 130, and a second insertion part 140. At this time, the connection part 110, the first insertion part 130, and the second insertion part 140 can be described by being divided according to their shape and functional characteristics, and they can be one unit connected vertically.

14) of the ferrule (10 in Fig. 14) and the optical fiber (21 in Fig. 14) in the optical cable (20 in Fig. 14). A first inserting portion 130 for inserting the optical cable 20 is located at the rear side of the connecting portion 110 and a second inserting portion 140 for inserting and fixing the ferrule 10 is located at the front side of the connecting portion 110 .

FIG. 2 is a view showing a connecting portion, FIG. 3 is a view showing a connecting groove, and FIG. 4 is a view showing a locking region of a connecting portion.

Referring to FIGS. 2 to 4, the connection part 110 may be formed with a concave connection groove 111. In the connection groove 111, the optical fiber of the ferrule and the optical fiber of the optical cable are connected. As shown in FIG. 3, guide grooves 111a may be formed on both sides of the connection groove 111. The guide groove 111a is inclined so that the entrance of the connection groove 111 is extended so that the optical fiber can be easily inserted into the connection groove 111,

The lid portion 120 covers the connection portion 110. As shown in FIG. 1, the lid 120 may include a pressing surface 120A facing the connection 110. As shown in FIG. The connection portion 110 may be formed with a connection groove 111 and a seating surface 110A facing the pressing surface 120A. The lid 120 may include guide protrusions 121 protruding from both sides of the rear end of the first insertion portion 130. Although the guide protrusion 121 is shown as a cylindrical shape, the present invention is not limited thereto and can be implemented in various forms.

A guide groove 122 may be formed in the pressing surface 120A of the lid 120 so as to be aligned with the entrance of the connection groove 111. [ On the other hand, the lid part 120 may include an insertion block 123 protruding from each corner of the pressing surface 120A. Each insertion block 123 may be inserted into the insertion slot 112 formed concavely in the connection portion 110

As shown in FIG. 4, a lock region 124 protruding from the outer surface of the lid 120 may be formed. When the holder 200 is positioned in the locking region 124, the holder 200 presses the connection portion 110 and the lid portion 120 and fixes them.

The first insertion part 130 is formed at the rear end of the connection part 110 and may be formed of collet type grip parts 131 so as to fix the optical cable. The second insertion part 130 is formed at the front end of the connection part 110 and may have a hole at the center thereof so that the ferrule can be inserted.

Fig. 5 is a view showing a holder, Fig. 6 is a sectional view of the holder shown in Fig. 5, and Fig. 7 is a front view of the holder shown in Fig.

5 to 7, the holder 200 serves to press and lock the connection part 110 and the lid part 120, and release the pressure. The operator moves the holder 200 to unlock the connection part 110 and the lid part 120 and insert the optical fiber of the optical cable into the connection groove 111. [ The holder 200 forms a receiving space on the inner side for moving along the connection part 110 and the lid part 120.

Specifically, the holder 200 may include an inner upper surface 210, an inner lower surface 220, and an inner side surface 230. The inner upper surface 210 contacts the outer surface of the connection portion 110 and the inner lower surface 220 contacts the lock region 124.

8 is a view showing a gap between the connecting portion and the lid portion.

In order to insert the optical fiber of the optical cable into the connection groove 111 of the connection part 110, the optical cable is inserted into the first insertion part 130. At this time, if the clearance t of the connecting portion 110 and the lid portion 120 is not secured at the entrance of the connecting groove 111 as shown in Fig. 9, the optical cable is damaged. The protrusion is formed in the lid 120 or the connecting portion 110 around the entrance of the connecting groove 111 to secure the clearance. This is because the connecting portion 110 or the lid 120, There is a fatal disadvantage that can lead to a deformation of the body.

Therefore, the optical connector according to the preferred embodiment of the present invention can secure clearance (t) between the connection part 110 and the lid part 120 through the guide slot 400 and the guide protrusion 121.

FIG. 9 is a view showing a guide slot of a holder, and FIG. 10 is a view showing the position of a guide slot.

Referring to FIG. 9, a guide slot 400 may be formed on the inner side surface 230 of the holder 200. The vertical distance h1 and h2 from the inner upper surface of the holder 200 to the contact points P1 and P2 of the guide slot 400 and the guide protrusion 121 are set in the holder 200 And the unlocking area 410 may be formed to extend in the longitudinal direction of the unlocking area 410.

For example, as shown in Fig. 9, when A in Fig. 9 is referred to as a direction toward the first insertion portion 130 and B in Fig. 9 is referred to as a direction toward the second insertion portion 140, The region 410 may be formed to be convexly protruding from the upper side wall of the end of the guide slot 400 facing A in Fig.

The positions of the guide protrusions 121 passing through the unlocking area 410 of the guide slot 400 are set so that the positions of the guide protrusions 121 When the reference line C is referred to, it can be seen that it is downward.

10, an upper wall of the guide slot 400 forming the contact point P between the unlocking area 410 of the guide slot 400 and the guide protrusion 121 is connected to the connection part 110 and the cover part 120 (T), which is calculated from the following equation (1).

Here, h is the vertical distance from the inner upper surface of the holder 200 to the contact point P between the guide slot 400 and the guide protrusion 121, and H is the vertical distance from the inner upper surface of the holder 200 to the guide protrusion 121 Is the vertical distance to the center 121a, and r corresponds to the radius of the guide protrusion 121. [

Meanwhile, the curved surface portion 420 may be formed at both sides of the guide slot 400 to extend the entrance size. The curved surface portion 420 induces smooth entry of the guide protrusion 120.

The unlocking area 410 is protruded from the upper side wall of the rear end of the guide slot 400. However, the present invention is not limited to this, and the unlocking area 410 may be formed flat, 400 may be downwardly curved.

9, the guide slot 400 may include an insertion guide portion 221 formed at an end of the inner bottom surface 220 of the guide slot 400 so as to be inclined downward at an end thereof to guide the insertion of the lid portion 120 .

FIG. 11 is a view showing the unlocked state, and FIG. 12 is a view showing a state in which a gap is secured between the connecting portion and the lid portion due to the holder in the state of FIG.

It is necessary to secure the clearance between the connecting portion 110 and the lid portion 120 in order to insert the optical fiber 21 of the optical cable 20. As shown in FIGS. 11 and 12, when the holder 200 is inserted into the guide protrusion 121, The guide protrusion 121 is lowered by the guide slot 400 of FIG. 8 so that the rear end of the cover 120 is heard and the clearance between the cover 120 and the connection part 110 is naturally ensured. This configuration eliminates the protrusion structure formed in the connection part 110 or the cover part 120 necessary for securing the clearance between the connection part 110 and the lid part 120 when the connection part 110 and the lid part 120 are unlocked .

Fig. 13 is a view showing a fixed state, and Fig. 14 is a view showing a state in which the connection portion and the lid portion are fixed by the holder in the state of Fig.

13 and 14, after the optical fiber of the optical cable is inserted into the connection groove 111 of the connection part 110 and connected to the optical fiber 11 of the ferrule 10, when the holder 200 is moved forward, The optical fiber 120 is fixed to the connection portion 110 while the optical fiber 11 of the ferrule 10 and the optical fiber 21 of the optical cable 20 are pressed.

As described above, the optical connector according to one preferred embodiment of the present invention has been specifically described with reference to the accompanying drawings.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Ferrule
20: Optical cable
11, 21: Optical fiber
100: Body
110:
110A:
111: connection groove
111a: guide groove
112: insertion slot
120:
120A: pressure face
121: guide projection
122: Guide groove
123: Insertion Block
124: Locking area
130: first inlet portion
131: Grip part
140: second inlet portion
200: Holder
210: inner upper surface
220: inner side
230: inner side
400: guide slot
410: unlock area

Claims (6)

A lid portion including an outer surface formed with a protruding locking region; a first insertion portion formed at one end portion of the connection portion and a second insertion portion formed at the other lateral end portion of the connection portion; An enclosing body;
A holder slidably fitted in the connection portion and the lid portion and including an inner upper surface contacting the outer surface of the connection portion and an inner lower surface and an inner side surface in contact with the lock region of the lid portion;
And guide projections formed on both side surfaces of a rear end portion of the lid portion,
And a guide slot formed on an inner side surface of the holder and formed along the longitudinal direction of the holder so that the guide protrusion is inserted and guided, wherein the guide slot is formed in the upper surface of the holder, And an unlocking area for increasing a vertical distance from the slot to the contact point of the guide protrusion toward the longitudinal direction of the holder,
Wherein the guide protrusion is formed at an end of the lid portion toward the first insertion portion side,
Wherein a curved surface portion for enlarging an entrance size is formed at both side entrance portions of the guide slot. The method according to claim 1,
And the unlocking region protrudes from an upper side wall of the guide slot. The method according to claim 1,
And the lid portion includes a guide groove formed concavely and aligned with both ends of the connection groove. The method according to claim 1,
Wherein the holder includes an insertion guide portion that is inclined downward at an end of the inner bottom surface to guide insertion of the cover portion. The method according to claim 1,
Wherein the end of the first insert comprises a collet type grip part. The method according to claim 1,
Wherein the lid portion includes an insertion block protruding from an edge, and the connection portion includes an insertion slot into which the insertion block is inserted, the insertion slot being inserted.

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