KR20230144748A - Device and method for surge protect - Google Patents

Abstract

The present invention relates to a surge protection device, which has a window and lid structure that prevents the indicator from moving and returning to its original position due to deterioration of the varistor, and maintains accurate color even when external force is applied, allowing precise replacement time to be confirmed. It is a surge protection device and method with a three-stage sequential separation operation structure of MOV.

Description

Surge protection device and method {DEVICE AND METHOD FOR SURGE PROTECT}

The present invention relates to a surge protection device, which prevents the indicator from moving and returning to its original position due to deterioration of the varistor and maintains accurate color even when an external force is applied, thereby enabling accurate replacement time to be confirmed; and It's a method.

Generally speaking, a surge protection device protects the load by preventing the voltage drop occurring in the load from rising excessively by allowing the current to flow through the surge protection device itself rather than through the load when a surge power comes from the outside. refers to the device

This uses the principle that when a surge enters the system, the system can be protected by flowing the surge current through a path with low impedance (i.e. surge protection device).

In the case where these surge protection devices only generate a two-stage signal indicating whether or not to replace, it is difficult to indicate a more precise replacement time, so a technology that indicates the degree of varistor deterioration in multi-stage colors was proposed. As shown in FIG. 1, this prior art includes a top module (TM) including a varistor (MOV) and a base module (BM) on which the top module (TM) is mounted and a switch (SW) is built. The top module (TM) includes a support frame (TM2) on one side of which the varistor (MOV) is provided, and a multiple display unit (MI) provided on the other side of the support frame (TM2). The multiple display unit (MI) includes an indicator (MI1) having various colors, and a rotating frame (MI2) that operates the indicator (MI1). The indicator (MI1) is observed from the outside through an observation hole in a separately provided cover (not shown). That is, when the color changes due to the operation of the indicator (MI1), it is possible to check whether it is subject to replacement by observing it from the outside. Meanwhile, the indicator MI1 is driven by the rotating frame MI2 as described above. This rotating frame (MI2) is held by the first holding part (MI3) and the second holding part (MI4), and receives a predetermined force by the elastic pressing part (MI5). In this state, when the varistor (MOV) is first deteriorated and the rotating frame (MI2) is separated from the first holding part (MI3), the rotating frame (MI2) is rotated by the elastic pressing part (MI5), thereby causing the indicator ( MI1) is activated and different colors reach the position of the observation hole. Additionally, the varistor MOV deteriorates, causing the rotation frame MI2 to additionally rotate from the second holding portion MI4, thereby driving the indicator MI1. With this configuration, it is displayed in multi-level colors depending on the degree of deterioration of the varistor (MOV).

However, in the case of this prior art, when an external force such as vibration is applied after the rotating frame is operated, the rotating frame may return to its original position. In this case, the indicator also returns to its original color, despite the deterioration of the varistor. There was a problem in that it was difficult to confirm the exact replacement time because the wrong color could appear due to external forces.

Meanwhile, the above-described surge protection device itself is widely known and is described in detail in the prior art literature below, so description and illustration thereof will be omitted.

Korean Registered Patent No. 10-2276668 Korea Registered Patent No. 10-2038110 Korea Registered Patent No. 10-2001159 Korea Registered Patent No. 10-1801798 Korean Patent No. 10-1443850 Korean Patent Publication No. 10-2021-0075331

The present invention is intended to solve the above-mentioned problems, and prevents the indicator from returning to its original position after moving due to deterioration of the varistor, so that accurate color can be maintained even when external force is applied, and a window that can accurately check the replacement time is provided. The purpose is to provide a surge protection device and method of a three-stage sequential separation operation structure of a MOV with a lead structure.

However, the object of the present invention is not limited to the object mentioned above, and other object not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, the present invention includes a top module 100 having a varistor (MOV), and a base module 200 on which the top module 100 is mounted and a switch (SW) is built. The top module 100 includes a support frame 1120 on which the varistor (MOV) is provided on one side, a multiple display unit (MI) provided on the other side of the support frame 1120, and a support frame 1120 with the varistor (MOV). It includes a frame 1120 and a cover 1100 in which a multiple display unit (MI) is provided and an observation hole 1150 is formed on one side, and the multiple display unit (MI) displays the degree of deterioration of the varistor (MOV) at different levels. It includes a first display unit 1300 and a second display unit 1400 shown in color, wherein the first display unit 1300 includes a first holding unit 1310 provided on one side of the varistor (MOV), and the first display unit 1310. It includes a first indicator 1320 attached to the holding part 1310 with a specific breaking strength, a first linking part 1330 linked with the first indicator 1320, and the first indicator ( 1320 is provided to be movable in the horizontal direction of the support frame 1120, and the first linkage part 1330 is provided to be movable in the vertical direction of the support frame 1120. In a normal state, the first linkage part 1330 ) is in contact with the first indicator 1320 and movement is prohibited, and the first indicator 1320 is separated from the first holding portion 1310 and moves due to primary deterioration of the varistor (MOV). The first linkage part 1330 moves upward, so that the first indicator 1320 does not return to its original position due to contact with the first linkage part 1330, providing a surge protection device.

In the above, the support frame 1200 includes a support frame body 1210 that is hollow and has a hexahedral shape with both sides open, and a plate-shaped bottom plate 1240 formed at the center of the support frame body 1210 in the thickness direction. ), the multiple indicator (MI) is provided on one side of the bottom plate 1240, the varistor (MOV) is provided on the other side of the bottom plate 1240, and the multiple indicator (MI) of the bottom plate 1240 is provided. A vertical partition 1220 and a horizontal partition 1230 are formed on the side where the indicator MI is provided, and the vertical partition 1220 and the horizontal partition 1230 are formed in the height and horizontal directions of the varistor MOV. , the side of the floor plate 1240 on which the multi-point indicator (MI) is provided by the vertical partition 1220 includes a first area (AR1) and a second area (AR2) divided in the horizontal direction, and the first area (AR1) The area AR1 includes an 11th area (AR1-1) and a 12th area (AR1-2) partitioned in the vertical direction by the horizontal partition 1230, and the 11th area (AR1-1) and the 12th area (AR1-2) are divided in the vertical direction by the horizontal partition wall 1230. Open portions O1 and O2 are formed in area 12 (AR1-2), respectively, to expose the varistor (MOV).

In the above, the first linkage part 1330 includes a plate-shaped first linkage body 1331 disposed below the second area AR2 of the support plate 1200 and movable in the vertical direction, It is provided on the first linkage body 1331 and includes an elastic pressing part 1333 that presses the first linkage body 1331 upward, and the first indicator 1320 has a specific color and has a support frame ( A first indicator plate 1321 that covers the upper surface of the frame 1200, is bent at an end of the first indicator plate 1321, covers the 11th area AR1-1 of the support frame 1200, and is movable in the horizontal direction. A first movable plate 1322 provided and an elastic pressing part provided on the first movable plate 1322 and pressing the first movable plate 1322 in a direction away from the first linkage body 1331. (1323), wherein one side of the elastic pressing portion 1323 is installed on the first moving plate 1322, and the other side is provided on one side of the support frame 1200, and the first moving plate 1322 ) is pressed, and the first moving plate 1322 is attached to the first holding part 1310 and contacts the first linkage body 1331 in a state in which movement is prohibited. prevents it from moving, and the first moving plate 1322 is separated from the first holding part 1310 due to primary deterioration of the varistor (MOV) and is separated from the first linking part 1330 by the elastic pressing part 1323. After moving away, the first linkage unit 1330 moves upward, and the first moving plate 1322 does not return to its original position due to contact with the first linkage main body 1331.

In the above, the bottom plate 1240 of the support plate 1200 has a first guide part 1241 and a second guide part 1242 formed by penetrating along the moving direction of the first moving plate 1322 in the height direction. are formed to be spaced apart from each other, and a first installation bar 1247 protrudes from the side of the vertical partition 1220 of the support plate 1200 in the direction of the first area AR1, and the first installation bar 1247 is the first installation bar 1247. It is formed along the moving direction of the moving plate 1322, and the first indicator 1320 is a first attachment portion provided on the first moving plate 1322 and attached to the first holding portion 1310 with a specific strength. (1326), a locking portion 1327 formed on the first moving plate 1322 and on which the first attachment portion 1326 is caught, and formed on the upper and lower sides of the first moving plate 1322, respectively; , a guide protrusion 1328 inserted into the first guide part 1241 and the second guide part 1242, respectively, and a support bar 1325 formed on a side of the first moving plate 1322 in the moving direction; , one side of the elastic pressing part 1323 of the first indicator 1320 is installed on the first installation bar 1247, and the other side is installed on the support bar 1325, so that the elastic pressing part 1323 Presses the first moving plate 1322 in a direction away from the first linkage part 1330, causing the first attachment part 1326 to separate from the first holding part 1310 due to primary deterioration of the varistor (MOV). And the first moving plate 1322 is moved away from the first linkage part 1330 by the elastic pressing part 1323.

In the above, the second display unit 1400 includes a second holding part 1410 formed on the varistor (MOV), a stopping plate 1440 attached to the second holding part 1410 with a specific strength, and A second linkage part 1430 movably installed in the twelfth area AR1-2 of the support plate 1200 and caught by the locking plate 1440, and an eleventh area AR1 of the support plate 1200. -1) is movably installed and includes a second indicator 1420 linked with the second linkage unit 1430, wherein the second indicator 1420 has a specific color and is attached to a support frame 1200 a second instruction plate 1421 covering the upper surface of the second instruction plate 1421, and a second instruction plate 1421 bent at an end and movably covering the 11th region AR1-1 of the support frame 1200. It includes a movable plate 1422 and an elastic pressing part 1425 provided on the second movable plate 1422 and pressing the second movable plate 1422 in the direction of the first pointing part, wherein the second linkage part (1430) includes a second interlocking plate 1432 provided at the bottom of the second movable plate 1422 and movably covering the twelfth area (AR1-2), and the second interlocking plate 1432 It is provided in and includes an elastic pressing part 1435 that presses the second interlocking plate 1432 in the direction of the first indicating part, and the second indicating plate 1421 is the first indicating plate of the first indicating part 1300. It is disposed on the upper surface of 1321, and the locking plate 1440 is separated from the second holding part 1410 by secondary deterioration of the varistor (MOV), and the second interlocking plate 1432 is connected to the elastic pressing part 1435. At the same time as it moves in the direction of the first indicator 1300, the second moving plate 1422 and the second indicator plate 1421 are linked to the second interlocking plate 1432 and move in the direction of the first indicator 1300. .

In the above, the strength with which the locking plate 1440 is attached to the second holding part 1410 is higher than the strength with which the first attachment part 1326 of the first display part 1300 is attached to the first holding part 1310. is formed

In the above, the bottom plate 1240 of the support plate 1200 is provided on the upper and lower sides of the opening O2 of the twelfth area AR1-2, and is formed at an end in the opposite direction of the second area AR2. 2 It further includes a third installation bar 1245 and a fourth installation bar 1246 provided in the moving direction of the display unit, and the second indicator 1420 is box-shaped at the bottom of the second moving plate 1422. It includes an installation chamber 1423 provided with a support bar 1424 formed on a side of a first area AR1 among the inner surfaces of the installation chamber 1423 and protruding in a direction opposite to the first area AR1, Both sides of the elastic pressing part 1425 of the second indicator 1420 are installed on the support bar 1424 and the third installation bar 1245, respectively, and the elastic pressing part 1425 is connected to the second indicator 1420. is pressed in the direction of the first area AR1, and the second interlocking part 1430 includes an installation chamber 1433 provided in a box shape at the bottom of the second interlocking plate 1432, and the installation chamber 1433. It includes a support bar 1434 formed on the side of the first area AR1 of the inner surface and protruding in a direction opposite to the first area AR1, and both sides of the elastic pressing part 1435 of the second linkage part 1430 are It is installed on the support bar 1434 and the fourth installation bar 1246, respectively, and the elastic pressing part 1435 presses the second linkage part 1430 in the direction of the first area AR1.

In the above, a 13th guide portion 1243 is formed by penetrating the lower end of the bottom plate 1240 of the support plate 1200, and the second interlocking portion 1430 is formed at the lower end of the second interlocking plate 1432. It further includes a guide plate 1434 that protrudes from one side and is coupled to the 13th guide portion 1243.

In the above, a plurality of coupling protrusions 1426 protrude on one side of the installation chamber 1423 of the second indicator 1420, and the coupling protrusions are formed on the second interlocking plate 1432 of the second interlocking part 1430. A plurality of coupling grooves 1436 to which 1426 is coupled are formed.

In addition, the present invention is a protection method using the surge protection device, and in a normal state, the first indicator 1320 of the first display unit 1300 is connected to the first attachment unit 1326 by the first holding unit 1310. It is attached and maintains its initial state, and the first linkage part 1330 is in contact with the first indicator 1320 and maintains a stationary state, and is exposed to the support frame 1200 through the observation hole 1120 of the cover 1100. The upper surface is exposed, and the normal state is confirmed by the color of the upper surface of the support frame 1200, and the locking plate 1440 of the second display unit 1400 is exposed to the second holding unit 1410 due to primary deterioration of the varistor (MOV). ), the first attachment portion 1326 of the first display portion 1300 is separated from the first holding portion 1310, and the first attachment portion 1326 of the first indicator 1320 is used to press the first indicator 1320. The moving plate 1322 is moved in a direction away from the first linkage part 1330, so that the first indicator 1320 is separated from the first linkage part 1330, and the first linkage part 1330 is elastically pressed. By moving upward by the unit 1333, the upper surface of the indicator plate 1321 of the first indicator 1300 is exposed through the observation hole 1120 of the cover 1100, and the upper surface of the indicator plate 1321 is exposed to the color of the upper surface of the indicator plate 1321. It is confirmed that it is scheduled to be replaced, and the locking plate 1440 of the second display unit 1400 is separated from the second holding unit 1410 due to secondary deterioration of the varistor (MOV), and the second linking unit 1430 and The second indicator 1420 moves in the direction of the first linkage part 1330 by the elastic pressing parts 1435 and 1425, respectively, and the second indicator 1420 passes through the observation hole 1120 of the cover 1100. ) of the indicator plate 1421 is exposed to provide a surge protection method that confirms the replacement status by the color of the upper surface of the indicator plate 1421.

In the above, the first linkage part 1330 moves upward by the elastic pressing part 1333 due to primary deterioration of the varistor (MOV), and then an external force is applied to cause the first indicator 1320 to return. Even if the first indicator 1320 is prevented from returning to its original position by contacting the first linking part 1330, the instruction of the first indicator 1300 is transmitted through the observation hole 1120 of the cover 1100. The upper surface of the plate 1321 is still exposed, and the indication plate 1321 can be maintained in a state to be replaced by the color of the upper surface.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to this, terms or words used in this specification and claims should not be construed in their usual, dictionary meaning, and the inventor may appropriately define the concept of the term in order to explain his or her invention in the best way. It should be interpreted with meaning and concept consistent with the technical idea of the present invention based on the principle that it is.

According to the present invention described above, the first indicator is separated from the first holding part and moves due to primary deterioration of the varistor, and then the first linkage part moves upward, so that the first indicator comes into contact with the first linkage part. As a result, it does not return to its original position, and as a result, the indicator does not move even when an external force such as vibration acts, so the accurate color of the deterioration of the varistor can be maintained, which has the effect of confirming the exact replacement time.

1 is a perspective view showing a typical surge protection device;
Figure 2 is an exploded perspective view of a surge protection device according to an embodiment of the present invention;
Figure 3 is a partial cross-sectional perspective view of a surge protection device according to an embodiment of the present invention;
Figure 4 is an exploded perspective view showing the varistor and support frame of the surge protection device according to an embodiment of the present invention;
Figures 5 to 7 are separated perspective views showing the support frame and the first indicating part of the surge protection device according to an embodiment of the present invention;
8 is a perspective view of a first indication of a surge protection device according to an embodiment of the present invention;
Figure 9 is a perspective view showing the relationship between the first holding part and the first attachment part of the surge protection device according to an embodiment of the present invention;
10 and 11 are schematic diagrams showing the operational relationship of the first display unit of the surge protection device according to an embodiment of the present invention;
Figures 12 and 13 are schematic views showing opposite sides of Figures 10 and 11;
14 is a perspective view showing a support frame and a second display unit of a surge protection device according to an embodiment of the present invention;
Figures 15 and 16 are separated perspective views showing the support frame and the second display part of the surge protection device according to an embodiment of the present invention;
Figure 17 is an exploded perspective view showing the second display part of the surge protection device according to an embodiment of the present invention;
Figure 18 is a schematic diagram showing the operational relationship between the first display unit and the second display unit of the surge protection device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

In addition, the examples below do not limit the scope of the present invention, but are merely illustrative of the elements presented in the claims of the present invention, and are included in the technical idea throughout the specification of the present invention and constitute the scope of the claims. Embodiments that include elements that can be replaced as equivalents may be included in the scope of the present invention.

As shown in FIGS. 2 to 13, the surge protection device 10 according to an embodiment of the present invention includes a top module 100 having a varistor (MOV), the top module 100 is mounted, and a switch (SW). ) includes a base module 200 in which is built-in. At this time, the base module itself in which the varistor (MOV) and switch (SW) are built-in can apply conventional technology, so redundant description and illustration thereof will be omitted.

The top module 100 of the present invention includes a support frame 1120, a multiple display unit (MI), and a cover 1100. The varistor (MOV) is provided on one side of the support frame 1120, and a multiple display unit (MI) is provided on the other side. In the case of the embodiment shown in FIG. 2, the varistor (MOV) is provided on the left side of the support frame 1120 in the drawing, and the multiple display unit (MI) is provided on the right side of the support frame 1120 in the drawing. The varistor (MOV), support frame 1120, and multiple display unit (MI) are provided inside the cover 1100. An observation hole 1150 is formed on one side (the top surface in the embodiment shown in FIG. 3) of the cover 1100. The color of the multiple display unit (MI) is confirmed through this observation hole 1120. As shown in FIG. 3, in a normal state, the upper surface of the support frame 1120 is exposed through the observation hole 1150 and can be observed from the outside. For example, if the upper surface of the support frame 1120 is green, the green color can be confirmed from the outside through the observation hole 1150, and in this case, it can be confirmed that the varistor (MOV) is in a normal state. Afterwards, the degree of deterioration of the varistor (MOV) can be indicated in different colors by the multi-display unit (MI). This multiple display unit (MI) includes a first display unit 1300 and a second display unit 1400. When primary deterioration of the varistor (MOV) occurs due to this multiple display unit (MI), a specific color (for example, yellow) is displayed through the observation hole 1150 by the first display unit 1300, and the varistor (MOV) displays a specific color (for example, yellow) through the observation hole 1150. When car deterioration occurs, a different color (for example, red) is displayed to the outside through the observation hole 1150 by the second display unit 1400.

The first display unit 1300 includes a first holding unit 1310 provided on one side of the varistor (MOV), and a first indicator 1320 attached to the first holding unit 1310 with a specific breaking strength. and a first linkage unit 1330 that is linked with the first indicator 1320. That is, the first holding part 1310 and the first indicator 1320 are separated from each other by the heat generated by primary deterioration of the varistor (MOV). For this purpose, the first holding part 1310 and the first indicator 1320 can be attached to each other by a predetermined solder, and the solder melts due to the heat generated by the deterioration, thereby forming the first holding part 1310 and the first indicia 1320. The adhesive state of 1 indicator 1320 may be released.

This first indicator 1320 is provided to be movable in the horizontal direction of the support frame 1120, and the first linkage part 1330 is provided to be movable in the vertical direction of the support frame 1120. At this time, as shown in FIG. 12, in a normal state, the first linkage part 1330 is in contact with the first indicator 1320 and movement in the vertical direction is prohibited. In this state, as shown in FIG. 13, the first indicator 1320 is separated from the first holding part 1310 and moves due to primary deterioration of the varistor (MOV), and then the first linking part 1330 moves upward. At this time, a predetermined color appears to the outside through the observation hole due to the indicator 1320. If, in this state, an external force such as surrounding vibration acts to cause the first indicator 1320 to move in the direction of the first linkage unit 1330, the first indicator 1320 moves a certain distance and then moves to the first indicator 1320. Because it is in contact with the first linkage part 1330, it cannot return to its initial normal state. In other words, since the first indicator 1320 does not return to its original position, the color of the first indicator 1320 continues to be exposed through the observation hole, making it possible to accurately indicate that primary deterioration has occurred in the varistor (MOV). there is.

The varistor (MOV) and multiple display unit (MI) are installed on the support frame 1200. This support frame 1200 includes a support frame body 1210 that is hollow and has a hexahedral shape with both sides open, and a plate-shaped bottom plate 1240 formed at the center of the support frame body 1210 in the thickness direction. do. The multiple indicator (MI) is provided on one side of the bottom plate 1240, and a varistor (MOV) is provided on the other side of the bottom plate 1240. A vertical partition 1220 and a horizontal partition 1230 are formed on the side of the bottom plate 1240 where the multi-indicator MI is provided. The vertical partition wall 1220 and the horizontal partition wall 1230 are formed in the height and horizontal directions of the varistor (MOV) (see FIGS. 4 and 5).

The side of the bottom plate 1240 on which the multi-indicator MI is provided by the vertical partition 1220 includes a first area AR1 and a second area AR2 divided in the horizontal direction. The second area AR2 includes a 21st area AR2-1 and a 22nd area AR2-2 partitioned in the vertical direction by the horizontal partition wall 1230. That is, the bottom plate 1240 is divided into a first area AR1 and a second area AR2 in the horizontal direction by the vertical partition 1220. The second area AR2 is divided into an 11th area AR1-1 and a 12th area AR1-2 in the vertical direction by a horizontal partition wall 1230. Open portions O1 and O2 are formed in the 11th area AR1-1 and the 12th area AR1-2, respectively, to expose the varistor MOV.

A multiple indicator (MI) is provided in the first area (AR1) and the second area (AR2), and the multiple indicator (MI) includes a first display unit (1300) and a second display unit (1400). The first display unit 1300 includes a first indicator 1320 and a first linkage unit 1330.

The first linkage unit 1330 includes a first linkage main body 1331 and an elastic pressing part 1333 that applies force in a specific direction to the first linkage main body 1331. The first linkage body 1331 is disposed below the second area AR2 of the support plate 1200. Additionally, the first linkage body 1331 has a plate shape that can be moved up and down in the second area AR2. For this purpose, a guide protrusion 1338 is formed on one side of the first linkage body 1331. Additionally, a guide groove 1248 in the height direction is formed on one side of the second area AR2 into which the guide protrusion 1338 can be inserted. This guide protrusion 1338 is guided by the guide groove 1248 so that the first linkage body 1331 can stably move in the vertical direction. Meanwhile, the guide grooves 1248 may be formed as a pair as shown in FIGS. 10 and 11. In this case, the guide protrusions 1338 may also be formed as a pair by protruding from both sides of the first linkage body 1331, respectively.

The first linkage body 1331 is pressed upward by the elastic pressing part 1333. The elastic pressing part 1333 may use a widely known spring or the like. This elastic pressing part 1333 is provided on the first linkage main body 1331 and presses the first linkage main body 1331 upward.

The first indicator 1320 includes a first indicating plate 1321, a first moving plate 1322, and an elastic pressing portion 1323. The first indicator plate 1321 has a specific color and covers the upper surface of the support frame 1200. The first moving plate 1322 is bent at an end of the first indicating plate 1321, covers the 11th area AR1-1 of the support frame 1200, and is movable in the horizontal direction. That is, when the first moving plate 1322 moves in the horizontal direction, the first indicating plate 1321 moves, and when the first indicating plate 1321 reaches the observation hole position, the first indicating plate ( 1321), the colors can be confirmed. This will be explained separately. The first moving plate 1322 receives force in a specific direction by the elastic pressing part 1323. This elastic pressing part 1323 may use a spring or the like and is provided on the first moving plate 1322 to press the first moving plate 1322 in a direction away from the first linkage body 1331. That is, the elastic pressing unit 1323 applies a force to move the first moving plate 1322 to the right in FIG. 7 . One side of the elastic pressing unit 1323 is installed on the first moving plate 1322, and the other side is provided on one side of the support frame 1200 to press the first moving plate 1322. That is, the elastic pressing unit 1323 is a compressed spring that presses the moving plate 1322 in a specific direction.

Meanwhile, the first moving plate 1322 is attached to the first holding part 1310 and is prevented from moving. At this time, as shown in FIG. 4, the first linkage body 1331 is disposed on the lower side of the second area AR2 as described above, and the upper side of the first linkage body 1331 is the first linkage body 1331. Because it is in contact with the moving plate 1322, the first linkage body 1331 is also unable to move. That is, the state shown in FIGS. 3 and 4 is a normal state in which both the first moving plate 1332 and the first linkage unit 1330 maintain a stationary state and the indicating plate 1321 of the first indicator 1320 ) is out of the observation hole (1150). Accordingly, the upper surface of the support frame 1120 is exposed through the observation hole 1150, and the normal state can be confirmed from the outside by the color (for example, green) of the upper surface of the support frame 1120.

When primary deterioration of the varistor (MOV) occurs in this normal state, the first moving plate 1322 is separated from the first holding portion 1310 by the heat generated from the varistor (MOV). As described above, after the first holding part 1310 and the first moving plate 1322 are attached to a certain strength by soldering, etc., the solder melts due to the generated heat, thereby forming the first holding part 1310 and the first moving plate. (1322) can be separated.

When the first holding part 1310 and the first moving plate 1322 are separated, the first moving plate 1322 becomes movable, and the elastic pressing part 1323 provided on the second moving plate 1322 The first moving plate 1322 moves away from the first linkage part 1330. When the first moving plate 1322 moves, the indicating plate 1321 moves to the position of the observation hole. As a result, the color (for example, yellow) of the indicator plate 1321 is exposed to the outside to indicate that it is subject to replacement.

Meanwhile, contact with the first linkage part 1330 is released by movement of the first moving plate 1322. Due to this action, the first linkage part 1330 moves upward by the elastic pressing part 1333. That is, as shown in FIG. 12, before the first moving plate 1322 moves, the movement of the first linking part 1330 is prohibited due to contact with the first linking part 1330. However, as shown in FIG. 13, after the first moving plate 1322 is moved, the contact with the first linkage part 1330 is released and the movement of the first linkage part 1330 is allowed. At this time, the first linkage part 1330 moves upward by the elastic pressing part 1333.

Even if a force is applied to return the first movable plate 1322 to its original position due to external vibration or the like, the first linkage part 1330 is in contact with the first linkage part 1330 because the first linkage part 1330 has already moved upward. This contact prevents the first moving plate 1322 from returning to its original position. Accordingly, the indicator plate 1321 linked to the first moving plate 1322 is also continuously exposed through the observation hole, so that primary deterioration of the varistor can be continuously confirmed from the outside.

As described above, the first movable plate 1322 covers the 11th area AR1-1 of the support frame 1200 and is movable in the horizontal direction. For this purpose, as shown in FIGS. 10 and 121, the bottom plate 1240 of the support plate 1200 is provided with a first guide portion 1241 and a second guide portion formed by penetrating along the moving direction of the first movable plate 1322. The guide portions 1242 may be formed to be spaced apart in the height direction. Additionally, as shown in FIG. 8, guide protrusions 1328 may be formed on the upper and lower sides of the first moving plate 1322, respectively. These guide protrusions 1328 can be inserted into the first guide part 1241 and the second guide part 1242, respectively, to achieve stable movement of the first moving plate 1322.

As described above, the first moving plate 1322 is provided with an elastic pressing portion 1323. To ensure that the elastic pressing portion 1323 is stably provided, a support bar 1325 formed on the side of the first moving plate 1322 in the moving direction (right side in the drawing) may be included, as shown in FIG. 7 . In addition, as shown in FIGS. 7, 8, and 14, a first installation bar 1247 protrudes from the side of the vertical partition 1220 of the support plate 1200 in the direction of the first area AR1, and the first installation bar 1247 protrudes from the side of the vertical partition 1220 of the support plate 1200. 1 Installation bar 1247 may be formed along the moving direction (horizontal direction) of the first moving plate 1322. At this time, one side of the elastic pressing part 1323 of the first indicator 1320 is installed on the first installation bar 1247, and the other side is installed on the support bar 1325, so that the elastic pressing part 1323 ) is stably provided, and the first moving plate 1322 can be pressed in a direction away from the first linkage part 1330.

As described above, the first moving plate 1322 is attached to the first holding part 1310 and is prevented from moving. For this purpose, as shown in FIGS. 8 and 9, the first indicator 1320 is provided on the first moving plate 1322 and has a first attachment portion (1320) attached to the first holding portion 1310 with a specific strength. 1326) and a locking portion 1327 formed on the first moving plate 1322 and on which the first attachment portion 1326 is caught. The first attachment portion 1326 may have an L-shape as shown, and the first holding portion 1310 may be attached to the upper surface of the horizontal member of the first attachment portion 1326. That is, the first attachment part 1326 is attached to the first holding part 1310, and the locking part 1327 is caught by the first attachment part 1326, so the first moving plate 1322 is eventually connected to the first holding part 1310. It is attached and fixed to the first holding part 1310.

If heat is generated toward the first holding part 1310 due to primary deterioration of the varistor (MOV), the solder melts as described above and the first attachment part 1326 is separated from the first holding part 1310. The first moving plate 1322 is moved away from the first linkage part 1330 by the elastic pressing part 1323. In Figure 9, the state in which the first attachment part 1326 is attached to the first holding part 1310 before movement and the state in which the first attachment part 1326 is separated from the first holding part 1310 and moved are shown simultaneously. .

As described above, the first linkage body 1331 is pressed upward by the elastic pressing portion 1333. In order to stably provide the elastic pressing portion 1333, a support bar 1335 may be provided on one side of the first linkage body 1331 in the height direction as shown in FIGS. 5 and 6. . Additionally, a second installation bar 1248 may be installed in the height direction below the second area AR2 of the bottom plate 1240. At this time, one side of the elastic pressing part 1333 is installed on the support bar 1335, and the other side is installed on the second installation bar 1248, so that the elastic pressing part 1333 can be stably provided.

The multiple display unit (MI) of the present invention includes a first display unit 1300 and a second display unit 1400. The second display unit 1400 includes a second holding unit 1410, a locking plate 1440, a second linking unit 1430, and a second indicator 1420, as shown in FIGS. 14 to 18. do. The second holding part 1410 is formed in the varistor (MOV). The locking plate 1440 is attached to the second holding part 1410 with a specific strength. At this time, the second holding part 1410 and the stopping plate 1440 may be attached to each other by soldering with a specific strength as described above. The second linkage part 1430 is movably installed in the twelfth area AR1-2 of the support plate 1200 and is caught by the locking plate 1440. The second indicator 1420 is movably installed in the 11th area AR1-1 of the support plate 1200 and is interlocked with the second linkage part 1430. That is, the locking plate 1440 is attached to the second holding part 1410, and the second linkage part 1430 is caught by the locking plate 1440, so movement of the second linkage part 1430 is prohibited. As a result, the second indicator 1420, which is linked with the second linkage unit 1430, is also prohibited from moving. As a result, the second indicator 1420 cannot reach the position of the observation hole, making it impossible to confirm the color of the second indicator 1420 from the outside.

This second indicator 1420 includes a second indicator plate 1421 that has a specific color and covers the upper surface of the support frame 1200, and is bent at an end of the second indicator plate 1421 and is attached to the support frame 1200. A second moving plate 1422 that covers the 11th area (AR1-1) and is movable, is provided on the second moving plate 1422, and moves the second moving plate 1422 in the direction of the first indicator. It includes an elastic pressing part 1425 that presses.

As shown in FIGS. 3 and 18, the second movable plate 1422 is spaced apart from the support frame 1200 at a predetermined distance so that the first movable plate 1322 can be placed therebetween. In addition, the second indicator plate 1421 is disposed on the upper surface of the support frame 1200 and higher than the first indicator plate 1321, so that the first indicator plate 1321 is located below the second indicator plate 1421. It is arranged so that the first indicator plate 1321 can be moved and exposed through the observation hole 1150.

The second interlocking portion 1430 includes a second interlocking plate 1432 provided at the bottom of the second moving plate 1422 and movably covering the twelfth area (AR1-2), and the second interlocking plate 1432. It is provided on the interlocking plate 1432 and includes an elastic pressing portion 1435 that presses the second interlocking plate 1432 in the direction of the first pointing portion.

If it is in a normal state or there is only primary deterioration of the varistor (MOV), the locking plate 1440 is not separated from the second holding portion 1410 and maintains the state shown in FIG. 3 or FIG. 13. At this time, when the stopping plate 1440 is separated from the second holding part 1410 due to secondary deterioration of the varistor (MOV), the second interlocking plate 1432 is connected to the elastic pressing part 1435 as shown in FIG. 18. It moves in the direction of the first indicating unit 1300. By moving the second interlocking plate 1432, the second moving plate 1422 and the second indicating plate 1421 are interlocked and move in the direction of the first indicating unit 1300. Meanwhile, by moving the second indicator plate 1421, the second indicator plate 1421 reaches the position of the observation hole, and the color (for example, red) of the second indicator plate 1421 changes to indicate the observation hole. This allows secondary deterioration to occur and confirm from the outside that the door is subject to replacement.

At this time, the strength at which the locking plate 1440 is attached to the second holding part 1410 is higher than the strength at which the first attachment part 1326 of the first display unit 1300 is attached to the first holding part 1310. do.

That is, the first attachment portion 1326 of the first display unit 1300 is separated from the first holding portion 1310 due to primary deterioration of the varistor (MOV), and the locking plate is separated due to secondary deterioration of the varistor (MOV). (1440) is separated from the second holding portion (1410). For this purpose, as described above, the first attachment part 1326 and the first holding part 1310 are formed by low-temperature soldering that melts at a relatively low temperature, and the locking plate 1440 and the second holding part 1410 are formed by relatively low temperature soldering. It can be formed by high-temperature soldering, which melts at high temperatures. With this configuration, the first attachment part 1326 and the first holding part 1310 to which surge power is to be applied are first separated, and when additional surge power or higher surge power is applied, the stopping plate 1440 and the second holding part are separated. Part 1410 may be separated later.

As described above, the second moving plate 1422 is provided with an elastic pressing portion 1425 to press the second moving plate 1422 in the direction of the first indicator. In order to stably install the elastic pressing portion 1425, the second indicator 1420 includes an installation chamber 1423 provided in a box shape at the bottom of the second moving plate 1422, and the installation chamber 1423 ) It may include a support bar 1424 formed on the side of the first area AR1 among the inner surfaces and protruding in a direction opposite to the first area AR1. In addition, the bottom plate 1240 of the support plate 1200 is provided above the opening O2 of the twelfth area AR1-2 and at the end in the opposite direction to the second area AR2 (on the right side in FIG. 18). ) and may include a third installation bar 1245 provided in the direction of movement of the second display unit. In this state, both sides of the elastic pressing part 1425 of the second indicator 1420 are installed on the support bar 1424 and the third installation bar 1245, respectively, and the elastic pressing part 1425 is attached to the second The indicator 1420 can be pressed in the direction of the first area AR1 (to the left in the drawing).

Additionally, the second interlocking plate 1432 is pressed in the direction of the first indicator by the elastic pressing part 1435. To ensure that the elastic pressing portion 1435 is stably provided, the second interlocking portion 1430 includes an installation chamber 1433 provided in a box shape at the bottom of the second interlocking plate 1432, and an installation chamber 1433. It is formed on a side of the first area AR1 among the inner surfaces and includes a support bar 1434 that protrudes in a direction opposite to the first area AR1. In addition, the bottom plate 1240 of the support plate 1200 is provided below the opening O2 of the twelfth area AR1-2, is formed at an end in the opposite direction to the second area AR2, and is provided on the second display unit. It may include a fourth installation bar 1246 provided in the moving direction. In this state, both sides of the elastic pressing part 1435 of the second linkage part 1430 are installed on the support bar 1434 and the fourth installation bar 1246, respectively, so that the elastic pressing part 1435 is connected to the second linkage part 1430. The interlocking part 1430 is pressed in the direction of the first area AR1.

The second interlocking plate 1432 is moved in the direction of the first indicator by the elastic pressing portion 1435. For stable movement of the second interlocking plate 1432, the second interlocking part 1430 is a guide plate that protrudes from one lower side of the second interlocking plate 1432 and is coupled to the 13th guide part 1243. (1434) may be further included. Additionally, a 13th guide portion 1243 may be formed through the lower end of the bottom plate 1240 of the support plate 1200. The guide plate 1434 is coupled to the 13th guide portion 1243 to achieve stable movement of the second interlocking plate 1432.

As described above, when the stopping plate 1440 is separated from the second holding portion 1410 due to secondary deterioration of the varistor (MOV), as shown in FIG. 18, the second interlocking plate 1432 is an elastic pressing portion ( 1435) and moves in the direction of the first indicating unit 1300. As the second interlocking plate 1432 moves, the second moving plate 1422 is interlocked and moves in the direction of the first indicating unit 1300. That is, since the second interlocking plate 1432 and the second moving plate 1422 are interlocked, a plurality of coupling protrusions 1426 are protruded on one side of the installation chamber 1423 of the second indicator 1420, It is also possible that a plurality of coupling grooves 1436, into which the coupling protrusions 1426 are respectively coupled, are formed in the second interlocking plate 1432 of the second interlocking part 1430.

As shown in FIGS. 14 and 15, the locking plate 1440 has an attachment portion 1442 attached to the second holding portion 1410 and extends from the attachment portion 1442 toward the outside of the support plate 1200. It may include a bent locking plate body 1441. That is, since the attachment part 1442 is bent while attached to the second holding part 1410, a space is created between the locking plate main body 1441 and the varistor (MOV), and the second linking part 1430 is in the space. ) is disposed so that the second linking part 1430 is caught by the attachment part 1442. If heat is generated in the varistor (MOV), as described above, the attachment portion 1442 is separated from the second holding portion 1410 and the second linking portion 1430 becomes movable. Meanwhile, a fixing plate 1443 may be formed on one end of the engaging plate body 1441. This fixing plate 1443 can be inserted into and fixed to the fixing plate insertion portion 1280 formed on one side of the support frame 1200.

As shown in FIGS. 2 and 3, a connection unit 1500 may be disposed between the support frame 1200 and the base module 200. The support frame 1200 is provided with a first display unit 1300 and a second display unit 1400, and the first display unit 1300 and the second display unit 1400 display a specific color, while the base module 200 Operate the switch (SW). For this purpose, a first pressure bar 1332 may be formed on the lower side of the first linkage body 1331 of the first display unit 1300. That is, the first linkage body 1331 moves up and down as described above, and the first pressure bar 1332 can operate the switch SW by this up and down movement. Additionally, a second pressure bar 1437 may be formed below the second interlocking plate 1432 of the second display unit 1400. The second interlocking plate 1432 moves in the horizontal direction as described above, and the second pressure bar 1437 can operate the switch SW by this horizontal movement.

The above-described first pressure bar 1332 and second pressure bar 1437 extend downward after penetrating the connection unit 1500 to press the switch SW. To this end, a first slit 1510 and a second slit 1520 are formed in the connection unit 1500 to allow the first pressure bar 1332 and the second pressure bar 1437 to pass through.

Meanwhile, a first space 1213 is formed at the lower end of the support frame 1200 to move the first pressure bar 1322 and the second pressure bar 1437, so that the first pressure bar 1322 You can make it go up and down. Additionally, a horizontal second space portion 1214 may be formed at the lower end of the support frame 1200 to enable horizontal movement of the second pressure bar 1437.

As shown in FIGS. 5, 10, and 11, an extension plate 1260 may be provided at the top of the support frame 1120. The extension plate 1260 may include a plate-shaped extension plate body 1261 that is formed to protrude in the height direction of the support frame 1200. A horizontal first slot 1262 and a second slot 1263 may be formed on the upper and lower sides of the extension plate body 1261. A first indicator plate 1321 may be inserted into the first slot 1262 so that the first indicator plate 1321 can be moved stably. The second indication plate 1421 can be inserted into the second slot 1263 to ensure stable movement.

Hereinafter, a protection method using the surge protection device of the present invention will be described with reference to FIGS. 2 to 18 again.

First, in the normal state, the first indicator 1320 of the first display unit 1300 maintains its initial state by attaching the first attachment unit 1326 to the first holding unit 1310, and the first linkage unit ( 1330 is in contact with the first indicator 1320 and remains stationary, and the upper surface of the support frame 1200 is exposed through the observation hole 1120 of the cover 1100 to change the color of the upper surface of the support frame 1200. Confirm that it is in normal condition. That is, as shown in FIG. 3, the first indicator 1320 and the first linkage part 1310 of the first display unit 1300 are biased to the left in the drawing, and the support frame is visible through the observation hole 1150. The top color (green) of (1120) is exposed, allowing external confirmation that it is in normal condition.

At this time, when primary deterioration of the varistor (MOV) occurs, the first display unit 1300 of the first display unit 1300 may be deactivated due to heat generation while the locking plate 1440 of the second display unit 1400 is attached to the second holding unit 1410. The attachment portion 1326 is separated from the first holding portion 1310. (See FIG. 9) As a result, the first moving plate 1322 is moved in a direction away from the first linking part 1330 by the elastic pressing part 1323 of the first indicator 1320, thereby forming the first indicator (1320). 1320 is separated from the first linkage part 1330, and the first linkage part 1330 moves upward by the elastic pressing part 1333, and the first linkage part 1330 moves upward through the observation hole 1120 of the cover 1100. The upper surface of the indicator plate 1321 of the indicator 1300 is exposed, and the color of the upper surface of the indicator plate 1321 confirms that it is scheduled for replacement (see FIGS. 11 and 13).

Afterwards, the locking plate 1440 of the second display unit 1400 is separated from the second holding unit 1410 due to secondary deterioration of the varistor (MOV), and the second linking unit 1430 and the second indicator 1420 are separated from the second display unit 1400. ) moves in the direction of the first linkage part 1330 by the elastic pressing parts 1435 and 1425, respectively, and indicates the indicator plate 1421 of the second indicator 1420 through the observation hole 1120 of the cover 1100. ) The upper surface is exposed, and the replacement status is confirmed by the upper surface color of the indicator plate 1421 (see Figure 18).

Meanwhile, as shown in FIG. 13, due to primary deterioration of the varistor (MOV), the first linkage part 1330 moves upward by the elastic pressing part 1333, and then the first indicator 1320 Even if an external force is applied to return, the first indicator 1320 contacts the first linkage part 1330 and cannot return to its original position. According to the present invention, the upper surface of the indicator plate 1321 of the first indicator 1300 is still exposed through the observation hole 1120 of the cover 1100, and is scheduled to be replaced according to the color of the upper surface of the indicator plate 1321. can be maintained.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and can be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

100: Top module 1100: Cover
1200: Support plate 1210: Support plate body
1220: vertical bulkhead 1230: horizontal bulkhead
1240: Bottom plate 1300: First display unit
1310: first holding unit 1320: first indicate
1321: first instruction plate 1322: first moving plate
1323: elastic pressing part 1325: support bar
1330: first linkage part 1331: first linkage main body
1332: Pressure bar 1335: Support bar
1400: second display unit 1410: second holding unit
1420: 2nd indicator 1421: 2nd indication plate
1422: second moving plate 1430: second linkage part
1432: Second interlocking plate 1435: Elastic pressing portion

Claims (11)

It includes a top module 100 having a varistor (MOV), and a base module 200 on which the top module 100 is mounted and a switch (SW) is built-in,
The top module 100 includes a support frame 1120 on which the varistor (MOV) is provided on one side, a multiple display unit (MI) on the other side of the support frame 1120, and the varistor (MOV) It includes a support frame 1120 and a cover 1100 in which a multiple display unit (MI) is provided and an observation hole 1150 is formed on one side,
The multiple display unit (MI) includes a first display unit 1300 and a second display unit 1400 that indicate the degree of deterioration of the varistor (MOV) in different colors,
The first display unit 1300 includes a first holding unit 1310 provided on one side of the varistor (MOV), and a first indicator 1320 attached to the first holding unit 1310 with a specific breaking strength. and a first linkage unit 1330 linked with the first indicator 1320,
The first indicator 1320 is provided to be movable in the horizontal direction of the support frame 1120, and the first linkage part 1330 is provided to be movable in the vertical direction of the support frame 1120,
In a normal state, the first linkage part 1330 is in contact with the first indicator 1320 and movement is prohibited, and the first indicator 1320 is connected to the first holding part due to primary deterioration of the varistor (MOV). After being separated from (1310) and moved, the first linkage part (1330) moves upward, so that the first indicator (1320) does not return to its original position due to contact with the first linkage part (1330). Device. According to paragraph 1,
The support frame 1200 includes a support frame body 1210 that is hollow and has a hexahedral shape with both sides open, and a plate-shaped bottom plate 1240 formed at the center of the support frame body 1210 in the thickness direction. do,
The multiple indicator (MI) is provided on one side of the bottom plate 1240, and a varistor (MOV) is provided on the other side of the bottom plate 1240,
A vertical partition wall 1220 and a horizontal partition wall 1230 are formed on the side of the bottom plate 1240 where the multiple indicator unit (MI) is provided, and the vertical partition wall 1220 and the horizontal partition wall 1230 are of the varistor (MOV). Formed in the height direction and horizontal direction,
The side of the floor plate 1240 on which the multi-indicator MI is provided by the vertical partition 1220 includes a first area AR1 and a second area AR2 divided in the horizontal direction, and the first area (AR1) includes an 11th area (AR1-1) and a 12th area (AR1-2) partitioned in the vertical direction by the horizontal partition 1230,
A surge protection device in which openings (O1 and O2) are formed in the 11th area (AR1-1) and the 12th area (AR1-2), respectively, to expose the varistor (MOV). According to paragraph 1,
The first linkage unit 1330 includes a plate-shaped first linkage body 1331 disposed below the second area AR2 of the support plate 1200 and capable of moving in the vertical direction, and the first linkage part 1331. It includes an elastic pressing part 1333 provided on the sub-main body 1331 to press the first linkage main body 1331 upward,
The first indicator 1320 includes a first indicator plate 1321 that has a specific color and covers the upper surface of the support frame 1200, and is bent at an end of the first indicator plate 1321 and is attached to the support frame 1200. A first moving plate 1322 that covers the 11th area AR1-1 and is movable in the horizontal direction, is provided on the first moving plate 1322, and connects the first moving plate 1322 to a first moving plate 1322 It includes an elastic pressing part 1323 that presses in a direction away from the linkage main body 1331,
One side of the elastic pressing part 1323 is installed on the first moving plate 1322, and the other side is provided on one side of the support frame 1200 to press the first moving plate 1322,
The first movable plate 1322 is attached to the first holding part 1310 and contacts the first linkage body 1331 in a state in which movement is prohibited, thereby preventing the first linkage main body 1331 from moving. ,
Due to the primary deterioration of the varistor (MOV), the first moving plate 1322 is separated from the first holding part 1310 and moves away from the first linking part 1330 by the elastic pressing part 1323. A surge protection device in which the first linkage part (1330) moves upward and the first moving plate (1322) does not return to its original position due to contact with the first linkage main body (1331). According to paragraph 3,
The bottom plate 1240 of the support plate 1200 has a first guide part 1241 and a second guide part 1242 formed by penetrating along the moving direction of the first moving plate 1322 and spaced apart in the height direction. formed,
A first installation bar 1247 protrudes from the side of the vertical partition 1220 of the support plate 1200 in the direction of the first area AR1, and the first installation bar 1247 is attached to the first moving plate 1322. Formed along the direction of movement,
The first indicator 1320 includes a first attachment portion 1326 provided on the first moving plate 1322 and attached to the first holding portion 1310 with a specific strength, and the first moving plate 1322. is formed on the upper and lower sides of the first movable plate 1322, a locking portion 1327 on which the first attachment portion 1326 is caught, and the first guide portion 1241 and the second guide. It includes guide protrusions 1328 inserted into each part 1242 and a support bar 1325 formed on a side of the first moving plate 1322 in the moving direction,
One side of the elastic pressing part 1323 of the first indicator 1320 is installed on the first installation bar 1247, and the other side is installed on the support bar 1325, so that the elastic pressing part 1323 is By pressing the first moving plate 1322 in a direction away from the first linkage part 1330,
Due to the primary deterioration of the varistor (MOV), the first attachment portion 1326 is separated from the first holding portion 1310, and the first moving plate 1322 is separated from the first linkage portion by the elastic pressing portion 1323. 1330), the surge protective device is moved away from the device. According to paragraph 1,
The second display unit 1400 includes a second holding unit 1410 formed on the varistor (MOV), a stopping plate 1440 attached to the second holding unit 1410 with a specific strength, and the support plate ( A second linkage part 1430 that is movably installed in the twelfth area (AR1-2) of the 1200 and is caught by the locking plate 1440, and an 11th area (AR1-1) of the support plate 1200 It is movably installed and includes a second indicator (1420) linked with the second linkage unit (1430),
The second indicator 1420 includes a second indicator plate 1421 that has a specific color and covers the upper surface of the support frame 1200, and is bent at an end of the second indicator plate 1421 and is attached to the support frame 1200. A second moving plate 1422 that covers the 11th area (AR1-1) and is movable, is provided on the second moving plate 1422, and moves the second moving plate 1422 in the direction of the first indicator. It includes an elastic pressing part 1425 that presses,
The second interlocking portion 1430 includes a second interlocking plate 1432 provided at the bottom of the second moving plate 1422 and movably covering the twelfth area (AR1-2), and the second interlocking plate 1432. It is provided on the interlocking plate 1432 and includes an elastic pressing portion 1435 that presses the second interlocking plate 1432 in the direction of the first pointing portion,
The second indicator plate 1421 is disposed on the upper surface of the first indicator plate 1321 of the first indicator 1300,
Due to secondary deterioration of the varistor (MOV), the stopping plate 1440 is separated from the second holding portion 1410, and the second interlocking plate 1432 is moved toward the first indicating portion 1300 by the elastic pressing portion 1435. A surge protection device in which the second moving plate 1422 and the second indicating plate 1421 are linked to the second interlocking plate 1432 and move in the direction of the first indicating unit 1300 at the same time. According to clause 5,
The strength at which the locking plate 1440 is attached to the second holding part 1410 is higher than the strength at which the first attachment part 1326 of the first display unit 1300 is attached to the first holding part 1310. Device. According to clause 5,
The bottom plate 1240 of the support plate 1200 is provided on the upper and lower sides of the opening O2 of the twelfth area AR1-2, and is formed at an end in the opposite direction of the second area AR2 and is provided on the second display unit. It further includes a third installation bar 1245 and a fourth installation bar 1246 provided in the moving direction,
The second indicator 1420 is formed in an installation chamber 1423 provided in a box shape at the bottom of the second moving plate 1422 and on the side of the first area AR1 among the inner surfaces of the installation chamber 1423. and includes a support bar 1424 protruding in a direction opposite to the first area AR1,
Both sides of the elastic pressing part 1425 of the second indicator 1420 are installed on the support bar 1424 and the third installation bar 1245, respectively, and the elastic pressing part 1425 is connected to the second indicator 1420. ) is pressed in the direction of the first area (AR1),
The second interlocking part 1430 is formed in an installation chamber 1433 provided in a box shape at the bottom of the second interlocking plate 1432 and on the side of the first area AR1 among the inner surfaces of the installation chamber 1433. and includes a support bar 1434 protruding in a direction opposite to the first area AR1,
Both sides of the elastic pressing part 1435 of the second linking part 1430 are installed on the support bar 1434 and the fourth installation bar 1246, respectively, and the elastic pressing part 1435 is connected to the second linking part 1430. ) A surge protection device that pressurizes in the direction of the first area (AR1). In clause 7,
A 13th guide portion 1243 is formed through the lower end of the bottom plate 1240 of the support plate 1200,
The second interlocking part 1430 further includes a guide plate 1434 that protrudes from one lower side of the second interlocking plate 1432 and is coupled to the 13th guide part 1243. In clause 7,
A plurality of coupling protrusions 1426 protrude from one side of the installation chamber 1423 of the second indicator 1420,
A surge protection device in which a plurality of coupling grooves 1436, into which the coupling protrusions 1426 are respectively coupled, are formed on the second interlocking plate 1432 of the second interlocking part 1430. A protection method using the surge protection device according to any one of claims 1 to 9, comprising:
In the normal state, the first indicator 1320 of the first display unit 1300 maintains its initial state with the first attachment unit 1326 attached to the first holding unit 1310, and the first linkage unit 1330 is in contact with the first indicator 1320 and maintains a stationary state, and the upper surface of the support frame 1200 is exposed through the observation hole 1120 of the cover 1100 and is exposed by the color of the upper surface of the support frame 1200. Confirm that it is in normal condition,
Due to primary deterioration of the varistor (MOV), the first attachment portion 1326 of the first display portion 1300 is damaged while the locking plate 1440 of the second display portion 1400 is attached to the second holding portion 1410. It is separated from the first holding part 1310, and the first moving plate 1322 is moved in a direction away from the first linking part 1330 by the elastic pressing part 1323 of the first indicator 1320 to 1 indicator 1320 is separated from the first linking part 1330, and the first linking part 1330 moves upward by the elastic pressing part 1333, so that the observation hole 1120 of the cover 1100 Through this, the upper surface of the indicator plate 1321 of the first indicator 1300 is exposed and it is confirmed that it is scheduled to be replaced by the color of the upper surface of the indicator plate 1321,
Due to secondary deterioration of the varistor (MOV), the locking plate 1440 of the second display unit 1400 is separated from the second holding unit 1410, and the second linking unit 1430 and the second indicator 1420 are separated. It moves in the direction of the first linkage part 1330 by the elastic pressing parts 1435 and 1425, respectively, and moves to the upper surface of the indicator plate 1421 of the second indicator 1420 through the observation hole 1120 of the cover 1100. A surge protection method that confirms the replacement status by the color of the upper surface of the indicated indicator plate (1421). According to clause 10,
Due to the primary deterioration of the varistor (MOV), the first linkage part 1330 moves upward by the elastic pressing part 1333, and even if an external force acts to cause the first indicator 1320 to return, the first linkage part 1330 moves upward by the elastic pressing part 1333. 1 Indicate 1320 is prevented from returning to its original position by contacting the first linking part 1330, so that the indicator plate 1321 of the first indicator 1300 is exposed through the observation hole 1120 of the cover 1100. ) A surge protection method in which the upper surface is still exposed and the indication plate 1321 is in a scheduled state for replacement by the upper surface color.

Images