KR102337910B1 - Apparatus for triggering cable strain - Google Patents

Abstract

Disclosed is an apparatus for inducing cable deformation. According to an embodiment of the present invention, the apparatus for inducing cable deformation may comprise: a frame unit extended from a rear end part to a front end part, having a hollow shape, having an optical fiber cable disposed therein, and including an upper part surface and a lower part surface facing and spaced apart from each other with the optical fiber cable therebetween; and a first deformation unit coupled to the front end part of the frame unit, of which at least a part is inserted inside the frame unit, slid backward by an external force applied from a front to a rear, deforms the optical fiber cable, and slid frontward when the external force is released.

Description

Cable strain inducer {APPARATUS FOR TRIGGERING CABLE STRAIN}

The present invention relates to a cable strain-inducing device, and more particularly, to a cable strain-induced device capable of detecting abnormal behavior of an intruder by deforming an optical cable by an external force acting in various directions.

When the optical cable is cut or bent (bent), the optical signal transmitted through the optical cable is changed. In addition, by using an optical time-domain reflectometer (OTDR) technology, it is possible to relatively accurately detect the location of a cut or bent portion in an optical cable. Using these characteristics, optical cables are often used for security.

Specifically, a technique for using an optical cable woven in a mesh form for the purpose of detecting an intrusion by installing it in a security fence, a fence, or a fence is a well-known technique.

In the device according to the prior art, it is a form of weaving an optical cable in the form of a fine mesh and installing it. This structure is focused on detecting when an intruder cuts or severely bends the optical cable to make a hole for penetration. However, an intruder could attempt to climb over the top of the fence by placing a ladder on the fiber optic fence or draping a blanket or the like over the fence. Such an attempt does not cut the fiber optic cable in the form of a mesh, and the force applied to the optical cable by a ladder or blanket is dispersed, so sufficient bending may not be formed. Therefore, there has been a problem in that the conventional structure has a significant probability of not detecting such an intrusion.

Registered Patent Publication No. 10-1698834 (Registered on 2017.01.17.)

The problem to be solved by the present invention is to provide a cable deformation inducing device capable of detecting an abnormal behavior of an intruder by deforming a cable by an external force acting in various directions.

The cable deformation inducing device of the present invention for solving the above problems is extended from the rear end toward the front end and has a hollow hollow shape, an optical cable is disposed therein, and faces each other with the optical cable therebetween and is spaced apart a frame portion including an upper surface and a lower surface; And coupled to the front end of the frame portion, at least a portion is inserted into the frame portion, slides backward by an external force acting from front to rear, deforms the optical cable, and slides forward when the external force is released 1 deformable part; may be included.

a housing portion disposed to surround the frame portion; and a second deforming part coupled to the housing part and extending toward the frame part to deform the optical cable by an external force acting from above to downward or from downward to upward with respect to the housing part; may include

The frame portion may have a through portion formed on the upper surface and the lower surface, respectively, and the second deformable portion may be formed to extend toward the through portion.

The housing portion may include: an upper housing disposed to surround an upper portion of the frame portion; and a lower housing coupled to the upper housing and disposed to surround a lower side of the frame part, wherein the second deformable part is coupled to the upper housing and is coupled to the upper housing by an external force acting from an upper side to a lower side. a first upwardly deforming part deforming the optical cable; and a second downward deforming unit coupled to the lower housing and configured to deform the optical cable by an external force acting from the lower side to the upper side with respect to the lower housing.

The first upper deformation portion may include: an upper plate coupled to the upper housing; an upper extension portion extending from the upper plate toward the through portion; a first upper concave groove recessed in the upper extension part; and a second upper concave groove recessed in the upper extension portion and having a greater depth than the first upper concave groove, wherein the second lower deformable portion includes: a lower plate coupled to the lower housing; a lower extension portion extending from the lower plate toward the through portion; a first lower concave groove recessed in the lower extension; and a second lower concave groove recessed in the lower extension and having a greater depth than the first lower concave groove.

The first upper concave groove is disposed to face each other in an extending direction of the second lower concave groove and the frame part, and the second upper concave groove is disposed along the extending direction of the first lower concave groove and the frame part. They may be disposed to face each other.

A first elastic part coupled to the housing part and configured to maintain a state in which the housing part is spaced apart from the upper and lower surfaces of the frame part by a predetermined distance; may further include.

The first elastic part may be provided as a leaf spring.

The first deformable portion may include a fastening portion coupled to a front end portion of the frame portion; a bracket having at least a portion inserted into the frame portion and sliding rearward by an external force acting from the front to the rear; a through hole formed in a portion of the bracket inserted into the frame portion, the optical cable disposed therein, and configured to deform the optical cable when an external force is applied to the bracket from the front to the rear; And one end is coupled to the fastening portion, the other end is coupled to the bracket, elastically deformed by an external force acting on the bracket, and when the external force acting on the bracket is released, the bracket is moved backward through an elastic restoring force. It may include; a second elastic part for sliding.

The fastening part has an open ring shape at one side, and may be press-fitted to the front end of the frame.

The coupling part includes a coupling pin to which the second elastic part is fastened and a pair of side pins spaced apart from each other connected to both sides of the coupling pin, and the pair of side pins facing each other from the coupling pin After extending obliquely so that the parts to be closed are bent, the parts facing each other may be inclined to extend away from each other.

The bracket may be spaced apart from the through hole, and a receiving slit in which the second elastic part is accommodated may be formed therein.

The bracket may include an upper flange portion and a lower flange portion respectively protruding upward and downward from the bracket.

The second elastic part may be provided as a coil spring.

A cover coupled to the front end of the bracket and disposed to surround the bracket may be further included.

The first deformable portion, at least a portion of the end facing the optical cable is provided with a sharp, sliding rearward by an external force acting from the front to the rear can cut the optical cable.

The second deformable portion, at least a portion of the end facing the optical cable is provided with a sharp, and the optical cable can be cut by an external force acting from above to downward or from below to upward with respect to the housing part. .

Cable deformation inducing device according to an embodiment of the present invention can detect abnormal behavior of an intruder by deforming the cable by external forces acting in various directions.

1 is a perspective view of a cable strain inducing device according to an embodiment of the present invention.
2 is an exploded perspective view of a cable deformation device according to an embodiment of the present invention.
3 to 4 are perspective views of a frame portion viewed from different directions according to an embodiment of the present invention.
5 is a perspective view illustrating a lower housing according to an embodiment of the present invention.
6 is a view showing a second downward deformation portion and a first elastic portion according to an embodiment of the present invention.
7 is a view showing a frame part, a first deformable part, and a cover according to an embodiment of the present invention.
8 to 9 are perspective views viewed from different directions of the frame part and the first deformable part according to an embodiment of the present invention.
10 is a view showing a first deformable part according to an embodiment of the present invention.
11 is a view showing a fastening unit according to an embodiment of the present invention.
12 is a view showing a second deformable part according to an embodiment of the present invention.
13A is a view showing a state before deformation of an optical cable according to an embodiment of the present invention, and FIG. 13B is a view showing a state in which an optical cable according to an embodiment of the present invention is deformed by a second downward deformation part .
14A is a view showing a state before deformation of an optical cable according to an embodiment of the present invention, and FIG. 14B is a view showing a state in which an optical cable according to an embodiment of the present invention is deformed by a first deforming unit.
15 is a view showing a second modified part according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that adding a detailed description of a technique or configuration already known in the field may make the gist of the present invention unclear, some of it will be omitted from the detailed description. In addition, the terms used in this specification are terms used to properly express embodiments of the present invention, which may vary according to a person or custom in the relevant field. Accordingly, definitions of these terms should be made based on the content throughout this specification.

The terminology used herein is for the purpose of referring to specific embodiments only, and is not intended to limit the invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. As used herein, the meaning of 'comprising' specifies a particular characteristic, region, integer, step, operation, element and/or component, and other specific characteristic, region, integer, step, operation, element, component, and/or group. It does not exclude the existence or addition of

Hereinafter, a cable strain-inducing device according to an embodiment of the present invention will be described with reference to the accompanying FIGS. 1 to 14 .

The cable deformation inducing device 1000 according to the present embodiment may be installed in an iron fence or the like as an application example thereof. In this embodiment installed on the iron fence, when an intruder applies an external force directly or indirectly to the cable deformation inducing device 1000, it can be deformed by pressing the optical cable 1100 disposed therein.

The optical cable 1100 is disposed over several hundred meters (m) or several tens of kilometers (km), and may be disposed while passing through a plurality of cable strain-inducing devices 1000 . An OTDR device (not shown), etc. is connected to one or both ends of the optical cable 1100 , and the OTDR device receives a signal flowing into the optical cable 1100 and a signal in which the optical signal is backscattered from the optical cable 1100 . can be measured.

In the optical cable 1100 , an optical signal generated by an OTDR device or the like flows through the optical cable 1100 . At this time, when the optical cable 1100 is deformed, such as when the optical cable 1100 is cut or the optical cable 1100 is severely bent, the optical signal flowing through the optical cable 1100 is changed. Specifically, when the optical cable 1100 is cut, the optical signal flowing through the optical cable 1100 is cut off, and strong backscattering occurs at the location where the optical cable 1100 is cut off. In addition, when the optical cable 1100 is bent, the intensity of the forward optical signal becomes weak depending on the degree of bending of the optical cable 1100, and backscattering occurs depending on the degree of bending at the bent position. will do

By calculating the arrival time of the signal introduced into the optical cable 1100 and the signal transmitted by backscattering, the position where the optical cable 1100 is cut or the optical cable 1100 is bent can be detected relatively accurately. In addition, by analyzing the pattern of the optical signal, it can be known whether the optical cable 1100 is cut or bent, and more specifically, if it is bent, it can be roughly known to what extent it is bent.

At this time, when an intruder directly applies an external force to the cable strain-inducing device 1000 or indirectly applies an external force to the cable strain-inducing device 1000 by applying an external force to the fence in which the cable strain-inducing device 1000 is installed , The apparatus 1000 for inducing deformation of the cable according to the present embodiment may cause deformation of the optical cable 1100 , such as cutting the optical cable 1100 or causing bending of the optical cable 1100 . Hereinafter, for convenience of explanation, the optical cable 1100 is bent by the second deforming part 1400 or the first deforming part 1500 as an example, but in this embodiment, the optical cable 1100 is the second It is also possible to cut by the deformable part 1400 or the first deformable part 1500 .

The apparatus 1000 for inducing deformation of a cable according to the present embodiment may include a frame part 1200 , a housing part 1300 , a second deformable part 1400 , and a first deformable part 1500 .

Referring to FIG. 1 , the coupled state of the cable strain inducing device 1000 is shown. On the other hand, the optical cable 1100 is extended to both sides of the cover 1700 of the cable strain-inducing device 1000, at this time, the optical cables 1100 on both sides are connected to each other cable strain-inducing device 1000, or any One may be connected to an OTDR device or the like.

The optical cable 1100 may be disposed to pass through the inside of the cable strain inducing device 1000 . After the signal flowing through the optical cable 1100 is introduced through the optical cable 1100 ( 1101 ) on one side, it goes through the optical cable 1100 disposed inside the cable strain inducing device 1000 , and the optical cable of the other side It may be introduced into the optical cable 1100 of the other cable strain-inducing device 1000 through 1100 ( 1102 ). On the other hand, the ring-shaped optical cable 1100 (1103) shown in Figure 1 has one end connected to the end of the optical cable 1100 (1101) on the side where the optical signal flows into the cable strain-inducing device 1000, The other end may be connected to an end of the optical cable 1100 ( 1102 ) on the side through which the optical signal flows into the other Beibble strain-inducing device.

2 to 3 , the frame part 1200 may be provided in a hollow shape extending in a predetermined direction. One end of the frame unit 1200 may be connected to the connection unit 1800 . The connecting portion 1800 is a member installed and coupled to a column supported by the ground, and the connecting portion 1800 has a portion 1810 installed on the column extending in the same direction as the column, but an inclined portion 1820 with the column It may be extended to be inclined at a certain angle. Accordingly, when the frame portion 1200 extending in a predetermined direction is installed in the inclined portion 1820 of the connecting portion 1800, the frame portion 1200 may be disposed to be inclined at a predetermined angle from the pillar.

On the other hand, the end direction of the frame part 1200 installed and coupled to the connection part 1800 in the longitudinal direction of the frame part 1200 based on FIGS. 2 and 3 is defined as the rear, and in the longitudinal direction of the frame part 1200, The direction of the end farthest from the connecting portion 1800 is defined as the front. However, the present embodiment is not limited to this direction.

The frame part 1200 has a rear end installed in the above-described connection part 1800, and may extend from the rear end toward the front end. In this case, the frame part 1200 may be provided in a hollow hollow shape.

The frame unit 1200 may have an optical cable 1100 disposed therein. Among the optical cables 1100 , the optical cable 1100 disposed inside the frame 1200 may be sealed by the frame 1200 . The frame part 1200 may be provided with an upper surface 1210 , a lower surface 1220 , and a pair of side surfaces 1230 connecting both ends thereof. At this time, the optical cable 1100 may be disposed in the inner space formed by the upper surface 1210 , the lower surface 1220 , and the pair of side surfaces 1230 of the frame unit 1200 .

The upper surface 1210 and the lower surface 1220 of the frame unit 1200 face each other with the optical cable 1100 interposed therebetween and may be spaced apart. A pair of side surfaces 1230 of the frame unit 1200 may also face each other with the optical cable 1100 interposed therebetween and be spaced apart. The frame portion 1200 may have through portions 1211 and 1221 formed on the upper surface 1210 and the lower surface 1220, respectively.

Referring to FIG. 3 , the upper surface 1210 of the frame part 1200 may have an upper penetrating part 1211 penetrating the upper surface 1210 of the frame part 1200 . In this case, a pair of upper through-portions 1211 may be provided as shown, but the present invention is not limited thereto. Hereinafter, for convenience of description, the upper penetrating portion 1211 will be described with reference to the upper penetrating portion 1211 shown in the upper right side of FIG. 3 .

The upper surface 1210 may have an upper opening 1213 penetrating the upper surface 1210 . The upper open portion 1213 of the upper surface 1210 may be disposed to be biased toward the front of the upper through portion 1211 of the upper surface 1210 .

Referring to FIG. 4 , the lower surface 1220 of the frame unit 1200 may have a lower penetrating portion 1221 penetrating the lower surface 1220 of the frame unit 1200 . At this time, a pair of the lower through-portion 1221 may be provided as shown, but the present invention is not limited thereto. Hereinafter, for convenience of explanation, the lower penetrating portion 1221 will be described with reference to the lower penetrating portion 1221 shown in the upper right of FIG. 4 .

The lower surface 1220 may have lower openings 1222 and 1223 penetrating the lower surface 1220 . The lower openings 1222 and 1223 of the lower surface 1220 may be disposed to be biased toward the front of the lower penetrating portion 1221 of the lower surface 1220 . The lower openings 1222 and 1223 are spaced apart from the first lower opening 1222 and the lower penetrating portion 1221 spaced apart from the lower penetrating part 1221 by a predetermined distance, but spaced apart from the first lower opening 1222 A second lower opening 1223 may be included.

The upper penetrating portion 1211 of the upper surface 1210 and the lower penetrating portion 1221 of the lower surface 1220 may be formed at positions facing each other. The upper opening 1213 of the upper surface 1210 and the second lower opening 1223 of the lower surface 1220 may be formed at positions facing each other.

1 to 2 , the housing unit 1300 may be disposed to surround the frame unit 1200 . The housing unit 1300 may extend along the frame unit 1200 and may be disposed to surround the front end of the frame unit 1200 to the rear end thereof.

As for the housing unit 1300 , the second deformable unit 1400 may be coupled to the housing unit 1300 as described below. Accordingly, when an external force generated by an intruder directly or indirectly acts on the housing unit 1300 , the second deformable unit 1400 coupled to the housing unit 1300 is an optical cable disposed inside the frame unit 1200 . (1100) can be modified.

The housing unit 1300 may include an upper housing 1320 and a lower housing 1340 coupled to each other. The housing unit 1300 may form a space in which the upper housing 1320 and the lower housing 1340 are coupled to accommodate the frame unit 1200 therein. The upper housing 1320 may be disposed to surround the upper side of the frame unit 1200 . The lower housing 1340 may be disposed to surround the lower side of the frame unit 1200 .

2 and 5 , in this embodiment, the housing unit 1300 is coupled to the housing unit 1300 , and the housing unit 1300 is spaced apart from the upper surface 1210 and the lower surface 1220 of the frame unit 1200 by a predetermined distance. It may further include a first elastic part 1600 to maintain the.

The first elastic part 1600 may be provided in the upper housing 1320 and the lower housing 1340 in the housing part 1300 , respectively. The first elastic part 1600 is provided in the upper housing 1320 and the lower housing 1340, respectively, so that the upper housing 1320 is spaced apart from the upper surface 1210 of the frame part 1200 by a predetermined distance. and to maintain the lower housing 1340 spaced apart from the lower surface 1220 of the frame part 1200 by a predetermined distance.

Hereinafter, for convenience of description, the first elastic part 1600 provided in the lower housing 1340 will be described as a reference. The first elastic part 1600 may be installed on the lower housing 1340 , specifically, on an inner surface of the lower housing 1340 facing the lower surface 1220 of the frame part 1200 .

Referring to FIG. 6 , the first elastic part 1600 includes an elastic panel 1610 installed on the lower housing 1340 , and the lower surface 1220 of the frame part 1200 connected to the elastic panel 1610 . It may include a plurality of elastic legs 1620 extending toward the. The plurality of elastic legs 1620 may be provided with four as shown, but is not limited thereto. The plurality of elastic legs 1620 may extend to be inclined in a direction away from each other between the elastic legs 1620 facing each other with the second deformable part 1400 interposed therebetween.

The plurality of elastic legs 1620 may be finished in a shape in which the end portion 1621 is bent. Accordingly, a surface of the plurality of elastic legs 1620 in contact with the lower surface 1220 of the frame unit 1200 may be in contact more smoothly, and noise may be minimized from occurring between each other.

The first elastic part 1600 may be provided as a leaf spring including an elastic panel 1610 and a plurality of elastic legs 1620 . When an external force is applied to the lower housing 1340 from the lower side, the lower housing 1340 becomes closer to the lower surface 1220 of the frame unit 1200, and in this case, the first elastic unit 1600 ) of the plurality of elastic legs 1620 may be elastically deformed and the elastic force may be stored. When the external force applied to the lower housing 1340 is released, the plurality of elastic legs 1620 of the first elastic part 1600 may be elastically restored and the lower housing 1340 may be returned to its original position. As such, the first elastic part 1600 may maintain the spaced distance between the lower housing 1340 and the lower surface 1220 of the frame part 1200 to be spaced apart by a predetermined distance.

2, 5 and 6 , the present embodiment may include a second deformable part 1400 . The second deformable part 1400 may be coupled to the housing part 1300 and extend toward the frame part 1200 . The second deformable part 1400 deforms the optical cable 1100 by an external force acting from the top to the bottom with respect to the housing part 1300 or by an external force acting from the bottom to the top with respect to the housing part 1300. The optical cable 1100 may be deformed. The second deformable portion 1400 may be formed to extend toward the through portions 1211 and 1221 .

More specifically, the second deformable part 1400 may include a first upper deformable part 1420 coupled to the upper housing 1320 and a second lower deformable part coupled to the lower housing 1340 .

The first upwardly deformable portion 1420 may deform the optical cable 1100 by an external force acting from the upper side to the lower side with respect to the upper housing 1320 . The second downward deforming unit 1440 may deform the optical cable 1100 by an external force acting from downward to upward with respect to the lower housing 1340 .

The first upwardly deformable portion 1420 may be coupled to an inner surface of the upper housing 1320 that faces the upper surface 1210 of the frame portion 1200 . In addition, the first upwardly deformable portion 1420 may be formed to extend toward the upper penetrating portion 1211 formed on the upper surface 1210 of the frame portion 1200 .

The second downward deformable part 1440 may be coupled to an inner surface of the lower housing 1340 that faces the lower surface 1220 of the frame part 1200 . In addition, the second downward deformable portion 1440 may be formed to extend toward the lower penetrating portion 1221 formed on the lower surface 1220 of the frame portion 1200 .

In addition, as shown in FIG. 6 , the second downward deformable part 1440 may be coupled to the first elastic part 1600 coupled to the lower housing 1340 , but the present invention is not limited thereto. 1 The elastic part 1600 may be coupled to the lower housing 1340 at separate positions, respectively. Although not shown, the first upwardly deformable part 1420 may be coupled to the first elastic part 1600 coupled to the upper housing 1320 , but is not limited thereto, and the first upwardly deformable part 1420 and the first The elastic parts 1600 may be respectively coupled to the lower housing 1340 at separate positions.

12 , the second lower deformable portion 1440 may include a lower plate 1441 , a lower extension portion 1442 , a first lower concave groove 1443 , and a second lower concave groove 1444 . . The lower plate 1441 may be coupled to the lower housing 1340 . The lower extension portion 1442 may extend from the lower plate 1441 toward the through portions 1211 and 1221 . More specifically, the lower extension portion 1442 may extend toward the lower penetrating portion 1221 .

The first lower concave groove 1443 may have the shape of a groove recessed in the lower extension portion 1442 . In the first lower concave groove 1443, the optical cable 1100 may be disposed in the recessed portion. The second lower concave groove 1444 may have the shape of a groove recessed in the lower extension portion 1442 . In the second lower concave groove 1444, the optical cable 1100 may be disposed in the recessed portion. The second lower concave groove 1444 may have a greater depth than the first lower concave groove 1443 .

The first upper deformable part 1420 may be provided in the same or similar shape as the second lower deformable part 1440 . The first upper deformation portion 1420 may include an upper plate 1421 , an upper extension portion 1422 , a first upper concave groove 1423 , and a second lower concave groove 1444 . The upper plate 1421 may be coupled to the upper housing 1320 . The upper extension portion 1422 may extend from the upper plate 1421 toward the through portions 1211 and 1221 . More specifically, the upper extension portion 1422 may extend toward the upper penetrating portion 1211 .

The first upper concave groove 1423 may have the shape of a groove recessed in the upper extension portion 1422 . In the first upper concave groove 1423 , the optical cable 1100 may be disposed in the recessed portion. The second upper concave groove 1424 may have the shape of a groove recessed in the upper extension portion 1422 . In the second upper concave groove 1424 , the optical cable 1100 may be disposed in the recessed portion. The second upper concave groove 1424 may have a greater depth than the first upper concave groove 1423 .

Meanwhile, the first upwardly deforming part 1420 and the first upwardly deforming part 1420 may be adjacent to each other in the longitudinal direction of the frame part 1200 , but may be sequentially disposed. As an embodiment, the first upper deformable portion 1420 may be disposed on the front side of the frame portion 1200 as compared to the second lower deformable portion 1440 . Alternatively, the first upper deformable portion 1420 may be disposed on the rear side of the frame portion 1200 as compared to the second lower deformable portion 1440 .

Hereinafter, for convenience of description, a case in which the first upper deformable part 1420 is disposed on the front side of the second lower deformable part 1440 with respect to the frame part 1200 will be described as an example.

The first upper deformable portion 1420 extends toward the upper through portion 1211 formed on the upper surface 1210 of the frame portion 1200, and a lower through portion formed on the lower surface 1220 of the frame portion 1200 ( 1221) and may be extended to a position almost adjacent to it.

Referring to FIG. 13 , the second lower deformable portion 1440 extends toward the lower through portion 1221 formed on the lower surface 1220 of the frame portion 1200 , and the upper surface 1210 of the frame portion 1200 . It may extend to a position substantially adjacent to the upper through-portion 1211 formed in the .

Accordingly, the first upper deformable portion 1420 and the second lower deformable portion 1440 may be disposed to cross each other in the through portions 1211 and 1221 of the frame portion 1200 and the inner space of the frame portion 1200 . .

12, the first upper concave groove 1423 is disposed to face each other along the extension direction (longitudinal direction) of the second lower concave groove 1444 and the frame part 1200, and the second upper concave groove ( 1424 may be disposed to face each other along the extending direction (length direction) of the first lower concave groove 1443 and the frame portion 1200 .

Referring to FIG. 12 , two cable passages A1 and A2 may be formed by the first upwardly deforming part 1420 and the second downwardly deforming part 1440 . At this time, the optical cable 1100 may be disposed in the first cable passage A1 formed by the first lower concave groove 1443 and the second upper concave groove 1424 . In addition, the optical cable 1100 may be disposed in the second cable passage A2 formed by the second lower concave groove 1444 and the first upper concave groove 1423 .

7 to 11 , the first deformable part 1500 may be coupled to the front end of the frame part 1200 . At least a portion of the first deformable unit 1500 is inserted into the frame unit 1200, slides backward by an external force acting from the front to the rear, and deforms the optical cable 1100, and moves forward when the external force is released. can be slid. The first deformable part 1500 may include a fastening part 1510 , a bracket 1520 , a through hole 1521 , and a second elastic part 1530 .

The fastening part 1510 of the first deformable part 1500 may be coupled to the front end of the frame part 1200 . Referring to FIG. 11 , the coupling part 1510 includes a coupling pin 1511 to which the second elastic part 1530 is fastened in a pin shape, and a pair of coupled pins connected to both sides of the coupling pin 1511 in a pin shape and spaced apart from each other. It may include a side fin 1512 .

Referring to FIG. 11 , a pair of side pins 1512 may be connected at both ends of the coupling pin 1511 of the fastening part 1510 . The pair of side pins 1512 may extend obliquely from the connected portion of the coupling pin 1511 to the farthest portion so that the portions facing each other become closer, and then are bent so that the portions facing each other are inclined to extend away from each other.

Referring to FIG. 11 , the pair of side pins 1512 may extend obliquely to some extent closer to each other based on a point connected to the coupling pin 1511 , and then extend obliquely away from each other again. At this time, the separation distance d2 between the ends 1512a of the pair of side fins 1512 at which the separation distance is closest to each other is formed smaller than the separation distances d1 and d3 between the other ends, preferably For example, the thickness between the upper surface 1210 and the lower surface 1220 of the frame part 1200 may be smaller than that of the frame portion 1200 .

On the other hand, the separation distance d3 between the pair of side pins 1512 and the coupling pin 1511 and the farthest end is preferably between the upper surface 1210 and the lower surface 1220 of the frame part 1200 . It may be provided larger than the thickness of. Accordingly, when the fastening part 1510 is coupled to the front end of the frame part 1200 , the pair of side pins 1512 are more easily fitted to the frame part 1200 , and the pair of side pins 1512 are more easily fitted to the frame part 1200 . ) is spaced between the ends 1512a closest to each other and may be fitted to the front end of the frame portion 1200 . That is, the fastening part 1510 has a ring shape with one side open according to the shape of the coupling pin 1511 and the pair of side pins 1512 described above, and the open part is forcibly fitted to the front end of the frame part 1200 . can be combined. Meanwhile, referring to FIG. 9 , the coupling pin 1511 of the fastening part 1510 is recessed at the front end of the upper surface 1210 and the lower surface 1220 of the frame part 1200 , slits 1210a and 1220a). is fitted to the , and thereby its position can be fixed.

Referring to FIG. 7 , at least a portion of the bracket 1520 may be inserted into the frame unit 1200 . The bracket 1520 may be slid backward by an external force acting from the front to the rear.

The cover 1700 is coupled to the front end of the bracket 1520 , and may be disposed to surround the bracket 1520 . The cover 1700 may be coupled to the coupling plate 1526 formed on the front end of the bracket 1520 . The cover 1700 may be formed with slits 1710 on both sides of which the optical cable 1100 may extend in and out. Through the slit 1710 , the optical cable 1100 may have an arrangement extending in and out of the cable strain-inducing device 1000 .

The through hole 1521 may be formed in the bracket 1520 . The through hole 1521 is formed at a portion inserted into the frame portion 1200 of the bracket 1520 , the optical cable 1100 is disposed therein, and when an external force is applied to the bracket 1520 from the front to the rear The optical cable 1100 may be deformed.

The accommodation slit 1523 may be formed in the bracket 1520 . The through hole 1521 and the receiving slit 1523 are formed in the bracket 1520 , respectively, and the receiving slit 1523 may be spaced apart from the through hole 1521 . Specifically, the receiving slit 1523 may be disposed to be biased toward the front of the through hole 1521 . Meanwhile, the regions of the through hole 1521 and the receiving slit 1523 may be separated from each other by the partition wall 1522 of the bracket 1520 .

The accommodating slit 1523 may accommodate the second elastic part 1530 therein. One end of the second elastic part 1530 may be coupled to the fastening part 1510 , and the other end may be coupled to the bracket 1520 . More specifically, one end of the second elastic part 1530 may be coupled to the coupling pin 1511 of the coupling part 1510 , and the other end may be coupled to the partition wall 1522 of the bracket 1520 .

The second elastic part 1530 is elastically deformed by an external force acting on the bracket 1520 , and when the external force acting on the bracket 1520 is released, the bracket 1520 may be slid forward through the elastic restoring force. .

The second elastic part 1530 may be provided as a coil spring. Accordingly, when an external force is applied to the cover 1700 from the front to the rear, the bracket 1520 may slide rearward inside the frame unit 1200 . At this time, the fastening part 1510 is coupled to the front end of the frame part 1200 and its position is fixed, whereas the partition wall 1522 of the bracket 1520 is to some extent toward the rear inside the frame part 1200 . can be slid. Accordingly, the portion of the second elastic part 1530 coupled to the fastening part 1510 has a fixed position, but the part coupled to the bracket 1520 slides together with the bracket 1520 . Therefore, the second elastic part 1530 may be elastically deformed and its length may be increased. Meanwhile, when the external force acting on the cover 1700 is released, the second elastic part 1530 may return to its original length by the elastic restoring force. At this time, the second elastic part 1530 may pull the bracket 1520 to slide forward with respect to the bracket 1520 slid backward inside the frame part 1200 . Accordingly, the rearward sliding bracket 1520 may return to its original position.

The bracket 1520 may further include an upper flange part 1524 and a lower flange part 1525 . A pair of upper flange portions 1524 may be provided, and may be formed to extend upward from both ends of the bracket 1520 , respectively. A pair of lower flange portions 1525 may be provided, and may be formed to extend downward from both ends forming the accommodation slit 1523 of the bracket 1520 , respectively. At this time, the pair of lower flange portions 1525 may include a first lower flange portion 1525b that is more biased to the rear and a second lower flange portion 1525a that is more biased toward the front than the first lower flange portion 1525b. have. In this case, the first lower flange portion 1525b and the second lower flange portion 1525a may be disposed in opposite directions with respect to the second elastic portion 1530 . Referring to FIG. 9 , the first lower flange part 1525b and the second lower flange part 1525a may be disposed in a diagonal direction with respect to the second elastic part 1530 .

The upper flange part 1524 and the lower flange part 1525 may face the upper surface 1210 and the lower surface 1220 of the frame part 1200 inside the frame part 1200 , respectively. In addition, the upper flange portion 1524 and the lower flange portion 1525 contact the upper surface 1210 and the lower surface 1220 of the frame portion 1200, respectively, or are spaced apart by a minute distance by a predetermined distance, respectively, of the bracket 1520. It is possible to prevent the portion inserted into the frame 1200 from rattling in the vertical direction.

On the other hand, unexplained reference numeral "1540" among the brackets 1520 denotes the handle portion 1540 provided in the bracket 1520, through which the bracket 1520 is inserted into the frame portion 1200 or the frame portion ( 1200) can be more easily withdrawn.

The bracket 1520 may be provided with a clip portion 1527 at a position biased toward the front side than the upper flange portion 1524 among both ends. The clip portion 1527 may have a shape folded toward the center of the bracket 1520 to restrain the optical cable 1100 as shown in FIG. 8 . The optical cable 1100 is constrained to be inserted into the clip portion 1527 , so that a portion of the optical cable 1100 inserted into the clip portion 1527 may be fixed.

On the other hand, the optical cable 1100 may have the same arrangement relationship as when assembled in the following order inside the cable strain-inducing device 1000 .

First, the optical cable 1100 is to have a ring shape. This ring is introduced into the frame portion 1200 through the upper opening 1213 formed on the upper surface 1210 of the frame portion 1200 from the outside of the frame portion 1200, at this time the ring is the frame portion ( 1200) After passing through the through hole 1521 of the bracket 1520 disposed inside, it passes through the second lower opening 1223 formed on the lower surface 1220 of the frame unit 1200 to the outside of the frame unit 1200 can be exited with At this time, the ring passed through the second lower opening 1223 to the outside of the frame unit 1200 passes through the first lower opening 1222 formed on the lower surface 1220 of the frame unit 1200 to frame the frame. After being introduced into the portion 1200 , it is extended to the outside of the rear end of the frame portion 1200 . As described above, the ring 1100 ( 1103 ) discharged to the outside of the rear end of the frame unit 1200 may be disposed as shown in FIG. 1 . On the other hand, the optical cable 1100 connected to the ring discharged to the outside of the rear end of the frame part 1200 may be divided into two parts inside the frame part 1200 . At this time, any one of the prongs is disposed so as to span the first lower concave groove 1443 of the second lower deformable part 1440 and the second upper concave groove 1424 of the first upper deformable part 1420, and the remaining One prong may be disposed to span the second lower concave groove 1444 of the second lower deformable portion 1440 and the first lower concave groove 1443 of the first upper deformable portion 1420 .

On the other hand, the present embodiment can be assembled by various methods capable of assembling the optical cable 1100 having the same arrangement relationship as that of the optical cable 1100 assembled by the above-described assembly process, even if it is not the above-described assembly process. In addition, in this embodiment, the optical cable 1100 is deformed by the second deforming unit 1400 and the first deforming unit 1500 even if the arrangement of the optical cable 1100 is not described above, so that the optical cable 1100 is It may include various optical cables 1100 that can detect the intrusion of an intruder according to the deformation.

Hereinafter, a process in which the optical cable 1100 is deformed by the second deformable unit 1400 will be described with reference to FIGS. 13A and 13B .

Referring to FIG. 13A , a second lower deformable part 1440 of the frame part 1200 and the second deformable part 1400 is shown, but the first upper deformable part 1420 is omitted for convenience of description.

Referring to FIG. 13A , the lower portion of the optical cable 1100 in the frame portion 1200 may be sealed to some extent by the first lower concave groove 1443 of the second downward deformation portions 1440 . Although not shown, the upper portion of the optical cable 1100 inside the frame portion 1200 may be sealed to some extent by the second lower concave groove 1444 . At this time, when an external force is applied to the lower housing 1340 from below, the first elastic portion 1600 of the lower housing 1340 is elastically deformed, and the lower housing ( 1340) is moved from the bottom to the top. At this time, the second downward deformable portion 1440 coupled to the lower housing 1340 is also moved from the downward direction to the upward direction.

At this time, the optical cable 1100 is moved upward to some extent by the first lower concave groove 1443 of the second downward deforming part 1440, but the upper penetrating part ( By being caught by the end of the upper surface 1210 of the frame portion 1200 constituting the 1211), its movement is limited. Accordingly, the optical cable 1100 may convexly protrude upward and the optical cable 1100 may be bent. Accordingly, as the optical cable 1100 is deformed to be bent, the OTDR device may detect that the optical cable 1100 is deformed. On the other hand, in this embodiment, the optical cable 1100 is caught by the end of the upper surface 1210 constituting the upper penetrating portion 1211 , as well as the second upper concave groove 1424 of the first upper deformable portion 1420 . ) is also possible. Meanwhile, when the external force acting on the lower housing 1340 is released, the lower housing 1340 may return to its original position by the first elastic part 1600 .

On the other hand, when an external force is applied to the upper housing 1320 from the top to the bottom, a state in which the optical cable 1100 is deformed may occur in the same manner as in FIGS. 13A and 13B .

Hereinafter, a process in which the optical cable 1100 is deformed by the first deformable unit 1500 will be described with reference to FIGS. 14A and 14B .

Referring to FIG. 14A , the two-pronged optical cable 1100 of the through hole 1521 formed inside the bracket 1520 may be disposed. The optical cable 1100 is introduced into the frame portion 1200 through the upper opening 1213, passes through the through hole 1521, and then passes through the second lower opening 1223 to the frame portion 1200. It shows a part of the end of the optical cable 1100 exiting to the outside.

Meanwhile, when an external force from the front to the rear is applied to the cover 1700 , the cover 1700 and the bracket 1520 coupled thereto may slide backward together. At this time, the through hole 1521 and the partition wall 1522 forming the front end of the through hole 1521 may press the optical cable 1100 to the rear side. Accordingly, the optical cable 1100 may be bent convexly protruding backward as shown in FIG. 14B . Accordingly, as the optical cable 1100 is deformed to be bent, the OTDR device may detect that the optical cable 1100 is deformed.

Hereinafter, a second deformable part according to another embodiment of the present invention will be described with reference to FIG. 15 . For convenience of description, the second downwardly deformable part among the second deformable parts will be described as an example, but it should be understood that the second upwardly deformed part among the second deformable parts is similarly understood. On the other hand, it should be understood to be the same as the configuration having the same reference numerals described above, except for the case of additionally described with separate reference numerals among the components shown in FIG. 15 .

15 , the second lower deformable portion 1440 may include a lower plate 1441 , a lower extension portion 1442 , a first lower concave groove 1445 , and a second lower concave groove 1446 . .

The first lower concave groove 1445 may have the shape of a groove recessed in the lower extension portion 1442 . In the first lower concave groove 1445 , the optical cable 1100 may be disposed in the recessed portion. The second lower concave groove 1446 may have the shape of a groove recessed in the lower extension 1442 . In the second lower concave groove 1446 , the optical cable 1100 may be disposed in the recessed portion. The second lower concave groove 1446 may have a greater depth than the first lower concave groove 1445 .

On the other hand, the second deformable portion 1400 is provided with a sharp at least a portion of the end toward the optical cable 1100, sliding backward by an external force acting from the front to the rear, it is possible to cut the optical cable (1100).

Specifically, an end 1445a facing the optical cable 1100 among the first lower concave grooves 1445 of the second downward deforming part 1440 may be sharply provided, and this sharp part is formed in the first lower concave groove ( 1445 may be formed by sharply processing the region or by coupling a sharp member (not shown) such as a separate blade to the first lower concave groove 1445 .

In addition, an end 1446a of the second lower concave groove 1446 of the second downward deformation part 1440 toward the optical cable 1100 may also be sharply provided. Although not shown, the first upper concave groove 1423 and the second upper concave groove 1424 of the second upper deformable part 1420 may have sharp ends facing the optical cable 1100 , respectively. Accordingly, when an external force acts from the upper side to the lower side, the sharp part of the second upwardly deforming part 1420 may contact the optical cable 1100 and then cut the optical cable 1100 . In addition, when an external force acts from the lower side to the upper side, the sharp part of the second lower deformable part 1440 may contact the optical cable 1100 and then cut the optical cable 1100 .

In addition, although not shown, in the first deformable part 1500 according to another embodiment of the present invention, at least a portion of the end portion facing the optical cable 1100 may be sharply provided. Specifically, an end of the partition wall 1522 of the bracket 1520 toward the optical cable 1100 disposed in the through hole 1521 may be sharply provided, and the optical cable 1100 of the partition wall 1520 may be It can be formed in such a way that the portion facing is sharply processed or a sharp member (not shown) such as a separate blade is coupled to the end of the partition wall 1520 facing the optical cable 1100 . On the other hand, when the optical cable 1100 (1103) of the ring portion shown in FIG. 1 is fixed to a separate fixing member, the optical cable 1100 can be held taut inside the frame 1200. Accordingly, the optical cable 1100 disposed in the through hole 1521 of the first deformable part 1500 is also maintained in a somewhat taut state, and the first deformable part 1500 is When sliding backward, the partition wall 1522 having a sharp part can cut the optical cable 1100 more easily.

The technical features disclosed in each embodiment of the present invention are not limited only to the embodiment, and unless they are mutually incompatible, the technical features disclosed in each embodiment may be combined and applied to different embodiments.

In the above, embodiments of the cable strain inducing device of the present invention have been described. The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and variations will be possible from the point of view of those of ordinary skill in the art to which the present invention pertains. Accordingly, the scope of the present invention should be defined not only by the claims of the present specification, but also by those claims and their equivalents.

1000: cable strain inducer
1100: optical cable
1200: frame part
1300: housing unit
1400: second deformable part
1500: first deforming part
1600: first elastic part
1700: cover

Claims (17)

a frame part extending from the rear end toward the front end and having a hollow hollow shape, having an optical cable disposed therein, facing each other with the optical cable interposed therebetween, and including upper and lower surfaces that are spaced apart; and
A first coupled to the front end of the frame portion, at least a portion of which is inserted into the frame portion, slides backward by an external force acting from the front to the rear, deforms the optical cable, and slides forward when the external force is released It includes a deformable part;
a housing portion disposed to surround the frame portion; and
A second deforming part coupled to the housing part and extending toward the frame part to deform the optical cable by an external force acting from above to downward or from downward to upward with respect to the housing part; do,
The frame portion, the upper surface and the lower surface are respectively formed with a through portion,
The second deformable portion is formed to extend toward the through portion,
The housing part,
an upper housing disposed to surround an upper side of the frame part; and
and a lower housing coupled to the upper housing and disposed to surround a lower side of the frame unit;
The second deformable part,
a first upwardly deforming part coupled to the upper housing and configured to deform the optical cable by an external force acting from an upper side to a lower side with respect to the upper housing; and
and a second downward deformation unit coupled to the lower housing and configured to deform the optical cable by an external force acting from the lower side to the upper side with respect to the lower housing. delete delete delete According to claim 1,
The first upward deformation portion,
an upper plate coupled to the upper housing;
an upper extension portion extending from the upper plate toward the through portion;
a first upper concave groove recessed in the upper extension part; and
A second upper concave groove that is recessed in the upper extension and has a depth greater than that of the first upper concave groove;
The second downward deformation portion,
a lower plate coupled to the lower housing;
a lower extension portion extending from the lower plate toward the through portion;
a first lower concave groove recessed in the lower extension; and
and a second lower concave groove recessed in the lower extension and having a greater depth than the first lower concave groove. 6. The method of claim 5,
The first upper concave groove is disposed to face each other along the extending direction of the second lower concave groove and the frame portion,
The second upper concave groove is disposed to face each other in an extending direction of the first lower concave groove and the frame part. According to claim 1,
and a first elastic part coupled to the housing part and configured to maintain a state in which the housing part is spaced apart from the upper and lower surfaces of the frame part by a predetermined distance. 8. The method of claim 7,
The first elastic part,
A cable strain-inducing device provided with a leaf spring. a frame part extending from the rear end toward the front end and having a hollow hollow shape, having an optical cable disposed therein, facing each other with the optical cable interposed therebetween, and including upper and lower surfaces that are spaced apart; and
A first coupled to the front end of the frame portion, at least a portion of which is inserted into the frame portion, slides backward by an external force acting from the front to the rear, deforms the optical cable, and slides forward when the external force is released It includes a deformable part;
The first deformable part,
a fastening part coupled to the front end of the frame part;
a bracket having at least a portion inserted into the frame portion and sliding rearward by an external force acting from the front to the rear;
a through hole formed in a portion of the bracket inserted into the frame portion, the optical cable disposed therein, and configured to deform the optical cable when an external force is applied to the bracket from the front to the rear; and
One end is coupled to the fastening part, the other end is coupled to the bracket, elastically deformed by an external force acting on the bracket, and sliding the bracket forward through an elastic restoring force when the external force acting on the bracket is released. Cable deformation inducing device comprising a; 10. The method of claim 9,
The fastening part,
A device for inducing deformation of a cable that has an open ring shape on one side and is press-fitted to the front end of the frame. 10. The method of claim 9,
The fastening part,
A coupling pin to which the second elastic part is fastened and a pair of side pins connected to both sides of the coupling pin, respectively, and spaced apart from each other,
The pair of side pins,
A device for inducing deformation of a cable in which each of the coupling pins extends obliquely so that parts facing each other are closer to each other and then bent so that parts facing each other are inclined to extend away from each other. 10. The method of claim 9,
The bracket is
A cable deformation inducing device spaced apart from the through hole and having a receiving slit in which the second elastic part is accommodated. 10. The method of claim 9,
The bracket is
Cable strain inducing device including an upper flange portion and a lower flange portion respectively protruding upward and downward from the bracket. 10. The method of claim 9,
The second elastic part,
A cable strain-inducing device provided with a coil spring. 10. The method of claim 9,
The cable strain inducing device further comprising a; a cover coupled to the front end of the bracket and disposed to surround the bracket. 10. The method of claim 1 or 9,
The first deformable part,
At least a portion of an end facing the optical cable is provided with a sharp edge, and is slid backward by an external force acting from the front to the rear to cut the optical cable. According to claim 1,
The second deformable part,
At least a portion of an end portion facing the optical cable is provided with a sharp edge, and a cable strain inducing device for cutting the optical cable by an external force acting from above to downward or an external force acting from below to upward with respect to the housing part.

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