KR102276668B1 - Surge protect device of multi stage switching - Google Patents

Abstract

The present invention relates to a surge protection device, and in particular, includes a top module including a varistor, and a base module including the top module, wherein the top module includes a case having the varistor therein, and installed inside the case and a support plate on which the varistor is supported, a frame movably provided on the support plate, a driving unit provided on one side of the support plate while pulling the frame, and a multi-step gripping unit for gripping the frame, The base module includes a plurality of switches that are turned on or off according to the movement of the frame, and the multi-level gripping unit is broken due to heat due to deterioration of the varistor, while the multi-step gripping unit has different breaking strength due to the heat. Provided in plurality, the multi-step gripping unit is broken step by step according to the strength of the surge power, the frame moves step by step, and the plurality of switches are turned on or off, respectively, to indicate the degree of deterioration of the varistor in multiple steps to replace the varistor It is a surge protection device of a multi-step switching method that can indicate the timing more precisely.

Description

Surge protection device with multi-stage switching method {SURGE PROTECT DEVICE OF MULTI STAGE SWITCHING}

The present invention relates to a surge protection device, and in particular, includes a top module including a varistor, and a base module including the top module, wherein the top module includes a case having the varistor therein, and installed inside the case and a support plate on which the varistor is supported, a frame movably provided on the support plate, a driving unit provided on one side of the support plate while pulling the frame, and a multi-step gripping unit for gripping the frame, The base module includes a plurality of switches that are turned on or off according to the movement of the frame, and the multi-level gripping unit is broken due to heat due to deterioration of the varistor, while the multi-step gripping unit has different breaking strength due to the heat. Provided in plurality, the multi-step gripping unit is broken step by step according to the strength of the surge power, the frame moves step by step, and the plurality of switches are turned on or off, respectively, to indicate the degree of deterioration of the varistor in multiple steps to replace the varistor It is a surge protection device of a multi-step switching method that can indicate the timing more precisely.

In general, a surge protection device is a device that 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 instead of through the load when the surge power is supplied from the outside. say the device.

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

The surge protection device includes a top module TM having a varistor MOV (not shown) as shown in FIG. 1 and a base module BM provided with the top module TM. The varistor MOV is a component having a very large impedance in a normal state, and when a surge power is applied, the impedance of the varistor MOV is rapidly lowered and the surge flows through a path other than the load to protect the load.

When surge power is applied to such a surge protection device, the varistor of the surge protection device deteriorates and needs to be replaced. In order to notify the replacement time of the varistor, conventionally, a predetermined switch is provided, and a signal is generated from the switch by application of a surge power to notify the replacement time of the varistor has been adopted.

However, in the case of this prior art, it is difficult to indicate a more precise replacement time because only a two-step signal indicating whether or not to replace is generated.

On the other hand, since the above-described surge protection device itself is widely known and is particularly described in detail in the following prior art documents, a description and illustration thereof will be omitted.

Korean Registered Patent No. 10-1141915 Korean Registered Patent No. 10-2023873 Korean Registered Patent No. 10-2047951 Korean Registered Patent No. 10-2038110 Korean Registered Patent No. 10-2001159 Korean Registered Patent No. 10-1801798 Korean Registered Patent No. 10-1443850

The present invention is to solve the above problems, and includes a top module having a varistor and a base module including the top module, wherein the top module includes a case having the varistor therein, and a case inside the case A support plate installed and supported by a varistor, a frame movably provided on the support plate, a driving unit provided on one side of the support plate while pulling the frame, and a multi-step gripping unit for gripping the frame, The base module includes a plurality of switches that are turned on or off according to the movement of the frame, and the multi-stage gripping unit is broken due to heat due to deterioration of the varistor, while the multi-level gripping unit has a breaking strength due to the heat. It is provided in a plurality of different pieces, and the multi-step gripping unit is broken step by step according to the strength of the surge power, so that the frame moves step by step, and the plurality of switches are turned on or off, respectively, to indicate the degree of deterioration of the varistor in multiple steps. An object of the present invention is to provide a surge protection device of a multi-step switching method that can indicate replacement time more precisely.

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

In order to achieve the above object, the present invention includes a top module (TM) having a varistor (MOV), and a base module (BM) including the top module (TM), wherein the top module (TM) is A case TM1 having a varistor MOV therein, a support plate SP installed inside the case TM1 and supporting the varistor MOV, and a movably provided on the support plate SP It includes a frame (N), a driving unit (S) provided on one side of the support plate (SP) while pulling the frame (N), and a multi-step gripping unit (FU) for gripping the frame (N), wherein the The base module (BM) includes a plurality of switches (SW) that are turned on or off according to the movement of the frame (N), and the multi-stage gripping unit (FU) is broken due to heat due to deterioration of the varistor (MOV) On the other hand, the multi-step gripping unit (FU) is provided with a plurality of different breaking strength due to the heat, and the multi-step gripping unit (FU) is broken step by step according to the strength of the surge power, so that the frame (N) moves step by step and by turning on or off the plurality of switches SW, respectively, to provide a multi-step switching type surge protection device indicating the degree of deterioration of the varistor MOV in multiple steps.

In the above, the switch SW includes a first switch SW1 and a second switch SW2 arranged in a specific direction inside the base module BM and spaced apart from each other by a specific distance, and the case TM1 is the The varistor MOV uses the hollow first case 110 provided therein, and the support plate SP is supported by the varistor MOV being disposed therein, and a part of the varistor MOV is formed therein. The exposed first support plate 120 is used, and the frame N is provided on one side of the first support plate 120 and uses a rotation frame 130 that is rotatably provided around a point. , The driving unit S uses a spring, one side is connected to the rotation frame 130 to pull the rotation frame 130 , the other side is fixed to the first support plate 120 , and the multi-step gripping The unit FU is provided on one side of the first support plate 120 , the rotation frame 130 is caught, and a lead wire L made of an elastic material, and provided on one side of the first support plate 120 . A stopper 150 made of an elastic material to which the rotation frame 130 is caught, and a second stopper 150 installed on one side of the varistor MOV and exposed through the empty space of the first support plate 120 to hold the lead wire L The first gripper F1 and the second gripper F2 installed on the other side of the varistor MOV, exposed through the empty space of the first support plate 120 and gripping the stopper 150 . ) is included.

In the above, the breaking strength of the first gripping part F1 is set lower than the breaking strength of the second gripping part F2, and in a normal state in which the surge power is not introduced, the rotating frame 130 is the lead wire (L). ), the rotating frame 130 turns on the first switch SW1 and turns off the second switch SW2, and the surge power is first introduced to generate heat due to deterioration of the varistor MOV. The first gripper F1 is broken first so that the rotating frame 130 rotates first, and then comes into contact with the stopper 150 to stop the rotation, and the rotating frame 130 has a first switch SW1 and a second switch. (SW2) are all turned off, and additional surge power is introduced to break the second gripper (F2) so that the rotation frame 130 is additionally rotated so that the rotation frame 130 turns off the first switch (SW1), 2 switch (SW2) is turned on.

In the above, the rotating frame 130 includes a plate-shaped base 131 that rotates about one side of the support plate 120 , and a first extension extending upwardly from the base 131 and spaced apart from each other. 132 and a second extension part 133, and a connection part 134 connecting the first extension part 132 and the second extension part 133 in a horizontal direction, and one of the bases 131 . The insertion hole 1311 is formed at the point and into which the rotation pin SO protruding from the first support frame 120 is inserted, and is formed on both sides of the insertion hole 1311 of the base 131, respectively. The first protrusion 1312 and the second protrusion 1313 are formed and extend downward to contact the switch SW, and a locking groove 134-2 is formed on one side of the connection part 134 to catch the lead wire L. do.

In the above, the stopper 150 includes a fixing plate 151 fixed to one side of the first support plate 120 , and a bent portion 152 bent at an end of the fixing plate 151 to cover the second gripping part F2 . ) and a locking part 153 formed at an end of the bent part 152 and bent to be spaced apart from the varistor MOV, wherein the second gripping part F2 grips the bent part 152 . When the rotating frame 130 rotates, the first extension 132 passes apart from the bent portion 152 and the engaging portion 153 , and the second extension 133 passes through the first extension 132 . ) is formed to be closer to the varistor MOV than the second extension part 133 is caught by the locking part 153 to stop the rotation, and the bending part 152 when the second gripping part F2 is broken. The second extension part 133 rotates past the locking part 153 as it is separated from the varistor MOV.

In the above, the lead wire L is fixed by a holder 160 formed on one side of the first support plate 120 , and the holder 160 is formed on the support plate 120 and spaced apart from each other by a predetermined distance. It includes a first holder 161 and a second holder 162, and between the first holder 161 and the second holder 162, a first space portion O1 in a horizontal direction and a second space in a vertical direction. A portion O2 is formed, and the lead wire L is disposed in a horizontal direction and formed in a vertical direction from one side of a horizontal base L1 inserted into the first space portion O1, and one side of the horizontal base L1. and a vertical base L2 inserted into the second space O2, a horizontal extension L3 extending in a horizontal direction from an end of the vertical base L2, and an end of the horizontal extension L3 Including a locking portion (L4) bent upward in an inclined direction, the locking portion (L4) is caught in the locking groove (134-2) of the rotation frame 130, the first gripping portion (F1) holds the horizontal extension part L3 or the locking part L4.

In the above, the switch (SW) includes a first switch (SW1) and a second switch (SW2) arranged in a specific direction inside the base module (M) and spaced apart a specific distance, the case (TM1) is the The varistor MOV uses a hollow second case 410 provided therein, and the support plate SP uses a second support plate 420 on which the varistor MOV is disposed on one side, , the frame N uses a moving frame 430 movably provided on one side of the second support plate 140 , and the driving unit S uses a spring, and one side uses the moving frame 430 . ) to pull the moving frame 430 , the other side is fixed to the second support plate 420 , and the multi-step gripping unit FU is a first provided on one side of the second support plate 420 . A lead wire (L1) and a second lead wire (L2), and a third gripper (F3) for gripping the first lead wire (L1) and a fourth gripper (F4) for gripping the second lead wire (L2) , the first lead wire (L1) and the second lead wire (L2) are disposed along the moving direction of the moving frame 430 and spaced apart from each other by a predetermined distance, and the third gripper (F3) is the varistor (MOV). formed on the side and passed through the second support plate 420 and then attached to the first lead wire L1, the fourth gripping part F4 is formed on the other side of the varistor MOV, and the second support After passing through the plate 140, it is attached to the second lead wire L2.

In the above, the breaking strength of the third holding part (F3) is set lower than that of the fourth holding part (F4), and in a normal state in which the surge power is not introduced, the moving frame 430 is the first lead wire. (L1), the moving frame 430 turns on the first switch (SW1) and turns off the second switch (SW2), and the surge power is first introduced to generate heat due to deterioration of the varistor (MOV) Thus, the first gripper F1 is broken first, so that the moving frame 430 moves first, then comes into contact with the second lead line L2 and stops moving, and the moving frame 430 is connected to the first switch SW1. and the second switch SW2 are both turned off, an additional surge power is introduced, the fourth gripper F4 is broken, and the moving frame 430 is additionally moved so that the moving frame 430 operates the first switch SW1 off, and the second switch SW2 is turned on.

In the above, the support plate 420 has a plate shape and a support plate 422 disposed in a vertical direction, an upper plate 421 provided on an upper side of the support plate 422 and disposed in a horizontal direction, and the support plate 422 . and side plates 423 disposed on both sides of the driving unit S, but using a spring, one side is connected to the moving frame 430 to pull the moving frame 430, and the other side supports the support The first driving part S1 fixed to the frame 420 and the first driving part S1 are disposed under the one side and connected to the moving frame 430 to pull the moving frame 430, and the other side is connected to the moving frame 430. A second driving part S2 fixed to the second lead wire L2 is included, and the moving frame 430 has a lower plate 435 to which the second driving part S2 is connected and the lower end is in contact with the switch SW. And, an extension portion 437 extending upward from one side of the lower plate 435, bent in the horizontal direction at the upper end of the extension portion 437, and a portion is protruded so that the first lead line L1 is A locking jaw 434 to be caught, an extension plate 431 extending upward from one side of the locking jaw 434 to connect the first driving part S1, and a second lead wire from one side of the lower plate 435 and a contact portion 436 protruding in the (L2) direction.

In the above, the support plate 420 includes a first inner plate 424 and a second inner plate 426 formed to be spaced apart from each other at a predetermined interval inside the both side plates 423, and the first inner plate 424 and and a lower plate 425 connecting the lower side of the second inner plate 426 in the horizontal direction, wherein the first inner plate 424 is a lower side of the first side plate 4231 which is one of the two side plates 423 . It is formed to be spaced apart from the end by a predetermined interval in the inward direction, and the second inner side plate 426 is formed to be spaced apart from the upper end of the second side plate 4232, which is another side plate among the side plates 423, by a predetermined interval in the inner direction, The second lead wire (L2) is disposed between the second inner plate (424) and the first side plate (4231) and is fixed to the base (L21), and the upper end of the base (L21) is inclined in the direction of the moving frame (430). and a horizontal portion L23 extending in the direction of the moving frame 430 from the end of the inclined portion L22 and disposed in the horizontal direction, and the fourth wave is formed on the horizontal portion L23. A branch portion F4 is provided, and the first lead wire L1 includes a base L11 disposed and fixed between the first inner side plate 426 and the second side plate 4232, and a lower end of the base L11. Including an inclined portion L12 inclined in the moving frame 430 direction, and a vertical portion L13 disposed in a vertical direction at the lower end of the inclined portion L12, and a third portion on the vertical portion L13. A holding portion F3 is provided, and the locking jaw 434 of the moving frame 430 is caught by the vertical portion L13 of the first lead wire L1, and a contact portion 436 of the moving frame 430 is provided. is spaced apart from the inclined portion L22 of the second lead line L2 by a predetermined interval.

In the above, the base module BM is formed in a U-shape and further includes a base case BM1 on which the top module TM is seated, and the frame N is rotated inside the base case BM1. A plurality of switches (SW) in contact with each other are arranged spaced apart from each other by a predetermined interval, and an upper part of the base case (BM1) is formed with an open part (BM2) to expose the switch (SW), and the surge power supply The multi-step gripping unit FU is sequentially broken by the , and the frame N moves step by step, and the plurality of switches SW are turned on or off, respectively, and the degree of deterioration is transmitted as an electrical signal by the switch SW do.

The features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in the present specification and claims should not be construed in a conventional and dictionary meaning, and the inventor may properly define the concept of the term to describe his invention in the best way. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

According to the present invention described above, there is an effect that can indicate a more precise replacement time than the prior art.

1 is a perspective view showing a general surge protection device;
2 is an exploded perspective view of a surge protection device according to an embodiment of the present invention;
3 is a cross-sectional perspective view of a surge protection device according to an embodiment of the present invention;
4 to 5 are perspective views showing only the middle case of the surge protection device according to an embodiment of the present invention by cross-section;
6 is a perspective view showing only a rotating frame according to an embodiment of the present invention;
7 is an exploded perspective view showing a surge protection device according to an embodiment of the present invention;
8 to 10 are schematic diagrams showing the operation steps of the surge protection device according to an embodiment of the present invention;
11 and 12 are an exploded perspective view and a cross-sectional perspective view of a surge protection device according to an embodiment of the present invention;
13 to 15 are perspective views of a surge protection device according to another embodiment of the present invention;
16 is an exploded perspective view of a surge protection device according to another embodiment of the present invention;
17 to 20 are perspective views showing only the support plate of the surge protection device according to another embodiment of the present invention;
21 to 23 are schematic views showing the operation steps of the surge protection device according to another embodiment of the present invention.

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

In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to 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 following embodiments do not limit the scope of the present invention, but are merely exemplary of the elements presented in the claims of the present invention, and are included in the technical spirit throughout the specification of the present invention and constitute the scope of the claims Embodiments including substitutable elements as equivalents in elements may be included in the scope of the present invention.

The surge protection device 10 according to an embodiment of the present invention includes a top module (TM) including a varistor (MOV) and a base module including the top module (TM) as shown in FIGS. 2 and 13 . (BM).

The top module TM includes a case TM1 having the varistor MOV therein, a support plate SP installed inside the case TM1 and supporting the varistor MOV, and the support plate ( A frame (N) movably provided on the SP), a driving unit (S) provided on one side of the support plate (SP) while pulling the frame (N), and a multi-step gripping unit for gripping the frame (N) (FU).

The base module (BM) includes a plurality of switches (SW) that are turned on or off according to the movement of the frame (N). In this case, the multi-stage gripping unit FU is broken due to heat generated due to deterioration of the varistor MOV, while a plurality of the multi-step gripping units FU having different breaking strength due to the heat generation are provided. That is, according to the strength of the surge power, the multi-step gripping unit FU is broken step by step, and the frame N moves step by step, and the plurality of switches SW are turned on or off, respectively, to deteriorate the varistor MOV. The degree is expressed in stages.

That is, according to the present invention, in the case of a normal state in which no surge power is applied from the outside, the multi-stage gripping unit FU is not broken, so that the frame N is continuously maintained at a specific position to turn the plurality of switches SW on or off, respectively. OFF to generate a predetermined signal. A control unit (to be described later) receives this signal, and may notify the normal state according to the type of the signal.

If the primary surge power is applied from the outside to deteriorate the varistor MOV and thereby generate heat, a specific multi-stage gripping unit FU among the multi-stage gripping units FU is broken. As a result, the frame N moves primarily to change the ON and OFF states of the plurality of switches SW, thereby indicating a replacement notice state.

In addition, when additional surge power or higher surge power is applied from the outside, all the multi-stage holding units FU are broken and the frame N is moved secondarily to change the ON and OFF states of the plurality of switches SW and, thereby, may indicate that it is in a replacement state.

As described above, according to the present invention, it is possible to indicate in multiple stages, such as a normal state, a replacement notice state, or a replacement state, by a switch signal, so that the replacement time can be expressed more precisely than in the prior art.

It will be described in more detail with reference to the following examples.

Example 1

2 to 12, in the present embodiment, the switch SW is arranged in a specific direction inside the base module BM and spaced apart from the first switch SW1 and the second switch SW2 by a specific distance. includes

The case TM1 uses a first hollow case 110 having the varistor MOV therein, and the support plate SP is supported by the varistor MOV disposed therein. The first support plate 120 to which a portion of the MOV is exposed is used. As shown, the first support plate 120 may have a hexahedral shape, and each part of the outer surface may have an open shape by a predetermined size.

The frame N uses a rotation frame 130 provided on one side of the first support plate 120 and rotatably provided around a point. This rotating frame 130 is rotated by the driving unit (S). The driving unit S uses a spring, one side is connected to the rotation frame 130 to pull the rotation frame 130 , and the other side is fixed to the first support plate 120 .

The multi-step gripping unit FU of this embodiment is provided on one side of the first support plate 120 , the rotating frame 130 is caught, and a lead wire L made of an elastic material, and the first support plate 120 . It is provided on one side and includes a stopper 150 made of an elastic material to which the rotation frame 130 is caught. The lead wire L is gripped by the first gripper F1. The first gripping part F1 is installed on one side of the varistor MOV, is exposed through an empty space of the first support plate 120 , and grips the lead wire L. The stopper 150 is gripped by the second gripper F2. The second gripper F2 is installed on another side of the varistor MOV, is exposed through an empty space of the first support plate 120 , and grips the stopper 150 .

At this time, the breaking strength of the first gripping part F1 is set to be lower than the breaking strength of the second gripping part F2. To this end, the first gripping part F1 may be formed by low-temperature soldering melted at a low temperature, and the second gripping part F2 may be formed by high-temperature soldering melting at a high temperature. By this configuration, the first gripping part F1 to which the surge power is applied is first melted and broken, and when an additional surge power or higher surge power is applied, the second gripping part F2 is melted and broken later and the gripping part F ) can be broken in stages.

Of course, the first gripping part F1 is melted and broken by forming the first gripping part F1 to be smaller than the second gripping part F2 by using solder of the same material as the gripping part F. It is possible, and since it can be equally applied to the second embodiment to be described below, a description thereof will be omitted.

That is, in a normal state in which the surge power is not introduced, the rotating frame 130 is caught by the lead wire L, and the rotating frame 130 presses the first switch SW1 to turn on, and the second switch SW2. does not pressurize and turns OFF. The first switch SW1 and the second switch SW2 are respectively connected to the control unit CON. According to the signal of the switch, the control unit CON may determine the normal state and display this state on a predetermined display unit DP.

When the surge power is first introduced and heat is generated according to the deterioration of the varistor MOV, and the first gripping part F1 is first broken, the lead wire L is elastically deformable. In this state, since the rotating frame 130 is pulled by the driving unit S, the rotating frame 130 rotates around a point. The rotation frame 130 first rotates and comes into contact with the stopper 150 to stop the rotation. At this time, the rotation frame 130 is spaced apart from the first switch SW1 and the second switch SW2 to turn off both the first switch SW1 and the second switch SW2. According to the signal of the switch, the control unit CON may identify the replacement notice state and display this state on a predetermined display unit DP.

When additional surge power is introduced and the second gripper F2 is broken, the stopper 150 is elastically deformable and the rotation frame 130 is additionally rotated. Accordingly, the rotation frame 130 turns off the first switch SW1 and turns on the second switch SW2. According to the signal of the switch, the control unit CON may identify the replacement state and display this state on a predetermined display unit DP.

As described above, the switch is turned on or off by the rotation of the rotating frame 130 . The rotating frame 130 includes a plate-shaped base 131 that rotates about one side of the support plate 120 , and a first extension 132 extending upward from the base 131 and spaced apart from each other. and a second extension part 133 and a connection part 134 connecting the first extension part 132 and the second extension part 133 in a horizontal direction. At this time, an insertion hole 1311 is formed at one point of the base 131 , and the rotation pin SO protruding from the first support frame 120 is inserted. With this configuration, the base 131 is rotatably provided around the rotation pin SO.

A first protrusion 1312 and a second protrusion 1313 are respectively formed on both sides of the insertion hole 1311 of the base 131 . The first protrusion 1312 and the second protrusion 1313 extend downward from the lower end of the base 131 to contact the switch SW, respectively. According to this configuration, when the rotating frame 130 rotates, the first protrusion 1312 and the second protrusion 1313 move up and down to turn the switch ON or OFF.

On the other hand, a locking groove 134-2 is formed on one side of the connection part 134, so that the lead wire L is caught. The locking groove 134-2 may be formed to be recessed on the left side of the connection part 134 in the drawing, and a part of the lead wire L is inserted into the locking groove 134-2 so that the rotating frame 130 is connected to the lead wire. (L) can be caught and fixed.

As described above, the rotation frame 130 is primarily caught by the lead wire (L) and is secondarily caught by the stopper 150 . The stopper 150 includes a fixing plate 151 fixed to one side of the first support plate 120 , a bent part 152 bent at an end of the fixing plate 151 to cover the second gripping part F2 , and the It is formed at the end of the bent part 152 and includes a locking part 153 bent to be spaced apart from the varistor MOV.

The second gripper F2 is provided on one side of the varistor MOV and is broken due to heat generated due to deterioration of the varistor MOV. The second gripper F2 is broken due to the above-described heat generation when an external surge power is applied by gripping the bent portion 152 to release the gripping state of the bent portion 152 . The rotation frame 130 is rotated by releasing the gripping state, and at this time, the first extension part 132 passes apart from the bent part 152 and the locking part 153 and passes through the second extension part 133 . is formed to be closer to the varistor MOV than the first extension part 132 , and the second extension part 133 is caught by the locking part 153 to stop rotation. That is, the first extension part 132 is disposed to be spaced apart from the varistor MOV by a predetermined interval, and the second extension part 133 is disposed to be in relatively close contact with the varistor MOV. Accordingly, when the rotation frame 130 is rotated, the first extension part 132 passes through the bending part 152 and the locking part 153 . However, since the second extension part 133 is in close contact with the varistor MOV, after passing through the bent part 152 , the second extension part 133 is caught by the locking part 153 to stop the rotation of the rotating frame 130 .

If the second gripping part F2 is broken, the second extension part 133 lifts the bent part 152 and the locking part 153 as the bent part 152 is separated from the varistor MOV to rotate the rotation. Rotation of the frame 130 is enabled.

The lead wire L is fixed by the holder 160 formed on one side of the first support plate 120 for this purpose as the rotation frame 130 is first caught. The holder 160 is formed on the support plate 120 and includes a first holder 161 and a second holder 162 spaced apart from each other by a predetermined distance. A first space portion O1 in a horizontal direction and a second space portion O2 in a vertical direction are formed between the first holder 161 and the second holder 162 . The lead wire L is fixed by the holder 160 and the rotation frame 130 is caught.

On the other hand, the lead wire (L) is disposed in the horizontal direction and is formed in the vertical direction from one side of the horizontal base (L1) and the horizontal base (L1) inserted into the first space (O1), the second space portion Includes a vertical base (L2) inserted into (O2). At this time, the horizontal extension part L3 extends in the horizontal direction from the end of the vertical base L2. At the end of the horizontal extension part L3, the locking part L4 is bent upward in an inclined direction. This locking part (L4) is caught in the locking groove (134-2) of the rotation frame (130).

The first gripper F1 gripping the lead wire L grips the horizontal extension portion L3 or the locking portion L4. Therefore, when the first gripping part F1 is broken due to heat generated by the deterioration of the varistor MOV, the horizontal extension part L3 or the locking part L4 can be freely deformed, thereby rotating the frame 130 . It can also be rotated.

As shown in FIGS. 11 and 12 , a connection unit 300 may be provided between the top unit TU and the base unit BM. The connection unit 300 may include a plate-shaped connection unit body 310 , and open portions 320 may be formed on both sides of the connection unit body 310 .

A folded portion 1511 in a state of being folded by a specific length may be formed under the fixing plate 151 of the stopper 150 . In addition, a plate-shaped support plate 180 may be provided on a side of the fixing plate 120 in the opposite direction to the direction in which the stopper 150 is formed, and the lower end of the support plate 160 is also folded by a specific length. A folded portion 1811 may be formed. Each of these folded parts 1511 and 1811 may pass through the opening 320 to enter the base unit BM.

The base module BM is formed in a U-shape and further includes a base case BM1 on which the top module TM is seated. A plurality of switches SW that are in contact with each other according to the rotation of the frame N are disposed inside the base case BM1 with a predetermined interval therebetween. In addition, an opening BM2 is formed in an upper portion of the base case BM1 to expose the switch SW. The exposed switch SW is turned on by being pressed by the first protrusion 1312 and the second protrusion 1313 of the rotation frame 130 .

That is, as described above, the multi-stage holding unit (FU) is sequentially broken by the surge power supplied from the outside, and the frame (N) - In this embodiment, the rotating frame 130 moves and rotates step by step, and the plurality of The switch SW is turned on or off, respectively, and the degree of deterioration is transmitted as an electrical signal by the switch SW.

The base unit BM is provided with an insertion plate BM3 which is formed in a plate shape and inserted into the folded portion 1811 . In addition, the base unit BM may include a fixing plate BM4 that is fixed after the folded portions 1511 and 1811 and the insertion plate BM3 pass therethrough. With this configuration, the top unit TM and the connection unit 300 may be stably fixed to the base unit BM.

Hereinafter, the present invention will be described step by step with reference to FIGS. 8 to 10 .

First, in FIG. 8 , a normal state in which no surge power is applied is shown. In this case, since the rotating frame 130 is caught by the lead wire L, it is fixed at the initial position even when the driving unit S is pulled. At this time, as described above, the rotation frame 130 is turned ON by pressing only the first switch SW1 and the second switch SW2 is not pressed to be OFF, and a predetermined electrical signal is sent to the control unit CON to send a predetermined A normal state may be displayed through the display unit DP of the .

As shown in FIG. 9, if a surge power is applied, heat is generated due to deterioration in the varistor. When the first gripper is broken by such heat, a portion of the lead wire L other than the horizontal base L1 and the vertical base L2 is freely deformable. Accordingly, the rotating frame 130 caught by the lead wire L rotates clockwise in the drawing by the driving unit. This is because the rotation frame 130 is rotatable in a state in which the first gripper of the lead wire L is broken.

However, since the second gripper F2 is currently being held, the stopper 150 is in a non-deformable state. Accordingly, the rotation frame 130 is caught by the locking part 153 while moving, and the rotation of the rotation frame 130 is stopped. At this time, the first protrusion 1312 and the second protrusion 1313 of the rotating frame 130 are both spaced apart from the switch SW, so that the rotating frame 130 is connected to the first switch SW1 and the second switch (SW1). SW2) All of them are not pressurized, so they are all turned OFF, and an electrical signal is sent to the control unit CON to indicate a replacement notice state through a predetermined display unit DP.

If an additional surge power is applied or a higher surge power is applied, a higher temperature is generated in the varistor as shown in FIG. 10 . The second gripper is broken by such heat, so that the stopper 150 is deformable. Accordingly, the rotation frame 130 in contact with the stopping part 153 of the stopper 150 is additionally rotated by the driving unit, and the stopping part 153 is lifted up so that the rotation frame 130 is rotatable. do. In the rotation of the rotation frame 130, the first protrusion 1312 is spaced apart from the first switch SW1 to turn off the first switch SW1, and the second protrusion 1313 presses the second switch SW2. Thus, the second switch SW2 is turned on. This electrical signal is transmitted to the control unit CON to indicate the replacement state through a predetermined display unit DP.

On the other hand, reference numeral 110, which is not described, denotes a case in this embodiment, and reference numeral 140 is a color indicating part, which is linked to the rotation of the rotating frame 130 to display a predetermined color.

Example 2

13 to 23 , in the present embodiment, the switch SW is arranged in a specific direction inside the base module BM and spaced apart from the first switch SW1 and the second switch SW2 by a specific distance. The point including the is the same as in Example 1.

However, the case TM1 uses a hollow second case 410 in which the varistor MOV is provided, and the support plate SP is a first case in which the varistor MOV is disposed on one side. The second supporting plate 420 is used, and the frame N is different in that a moving frame 430 movably provided on one side of the second supporting plate 140 is used.

That is, in the present embodiment, the varistor MOV is one side of the second support plate 420 and is provided on the opposite side of the side on which the moving frame 430 is installed. In this case, the moving frame 430 is different from the first embodiment in that it moves in a straight direction.

The driving unit S uses a spring. One side of the driving unit S is connected to the moving frame 430 to pull the moving frame 430 , and the other side is fixed to the second supporting plate 420 .

The multi-step gripping unit FU of this embodiment includes a first lead wire L1 and a second lead wire L2 provided on one side of the second support plate 420 , and a third gripping unit for gripping the first lead wire L1 . It includes a gripping part F3 and a fourth gripping part F4 gripping the second lead wire L2. The first lead line L1 and the second lead line L2 are disposed along the moving direction (horizontal direction in the drawing) of the moving frame 430 and are spaced apart from each other by a predetermined interval.

The third gripping part F3 is formed on one side of the varistor MOV and is attached to the first lead wire L1 after passing through the second support plate 420 , and the fourth gripping part F4 is the It is formed on the other side of the varistor MOV, and is attached to the second lead wire L2 after passing through the second support plate 140 . Due to this configuration, when heat is generated due to deterioration of the varistor MOV, the third gripping part F3 or the fourth gripping part F4 is melted and broken by the heat. At this time, the third holding part (F3) and the fourth holding part (F4) are lead ?? It is possible to use the same as described above.

The breaking strength of the third holding part F3 is set to be lower than the breaking strength of the fourth holding part F4. That is, in a normal state in which the surge power is not introduced, the moving frame 430 is caught by the first lead wire L1 so that the moving frame 430 turns on the first switch SW1 and the second switch SW2. turns off The first switch SW1 and the second switch SW2 are respectively connected to the control unit CON. According to the signal of the switch, the control unit CON may determine the normal state and display this state on a predetermined display unit DP.

The surge power is first introduced and heat is generated according to the deterioration of the varistor MOV, so that the third holding part F3 is broken first. The first lead wire L1 is elastically deformable by the breakage of the third holding part F3 (see FIG. 22). At this time, the moving frame 430 is pulled by the driving unit S, so that the moving frame ( 430 moves primarily while deforming the first lead wire L1. While the moving frame 430 is moving, it comes into contact with the second lead line L2 and stops moving. At this time, the moving frame 430 turns off both the first switch SW1 and the second switch SW2. According to the signal of the switch, the control unit CON may identify the replacement notice state and display this state on a predetermined display unit DP.

If an additional surge power is introduced and the fourth gripper F4 is broken, the second lead wire L2 is elastically deformable. At this time, since the moving frame 430 is pulled by the driving unit S, the moving frame 430 moves additionally while deforming the second lead wire L2 so that the moving frame 430 turns off the first switch SW1 and , the second switch SW2 is turned on. According to the signal of the switch, the control unit CON may identify the replacement state and display this state on a predetermined display unit DP.

On the other hand, the support plate 420 has a plate shape and a support plate 422 arranged in a vertical direction, an upper plate 421 provided on the upper side of the support plate 422 and arranged in a horizontal direction, and the support plate 422 . It includes side plates 423 respectively disposed on both sides.

The driving unit S uses a spring and includes a first driving unit S1 and a second driving unit S2. One side of the first driving unit S1 is connected to the moving frame 430 to pull the moving frame 430 , and the other side is fixed to the supporting frame 420 . The second driving unit S2 is disposed below the first driving unit S1, one side is connected to the moving frame 430 to pull the moving frame 430, and the other side is connected to the second lead wire L2. is fixed It is possible to pull the moving frame 430 by such a driving unit (S).

The moving frame 430 has a lower end plate 435 to which the second driving unit S2 is connected and in contact with the switch SW, and an extension portion 437 extending upward from one side of the lower end plate 435 . ) and a locking protrusion 434 bent in the horizontal direction at the upper end of the extension portion 437 and protruding a portion to catch the first lead wire L1. An extension plate 431 extends upwardly from one side of the locking protrusion 434 to connect the first driving part S1. A contact portion 436 protruding in the direction of the second lead line L2 is formed on one side of the lower plate 435 .

The moving frame 430 moves while being pulled by the driving unit S, and the lower plate 435 of the moving frame 430 comes into contact with the switch SW.

On the other hand, the support plate 420 includes a first inner plate 424 and a second inner plate 426 which are formed to be spaced apart from each other by a predetermined interval inside both side plates 423 , and the first inner plate 424 and the second inner plate 424 . 2 and a lower plate 425 connecting the lower side of the inner plate 426 in the horizontal direction.

The first inner plate 424 is formed to be spaced apart from the lower end of the first side plate 4231, which is one of the side plates 423, by a predetermined interval in the inner direction, and the second inner plate 426 is the side plate 423. ) of the other side plate, the second side plate 4232 is formed to be spaced apart by a predetermined interval in the inner direction from the upper end. In this case, the second inner plate 426 may be disposed in the vertical direction as shown in FIG. 18 and have a shape in which a central portion is opened.

The second lead wire (L2) is disposed between the second inner plate (424) and the first side plate (4231) and fixed to the base (L21), and from the upper end of the base (L21) toward the moving frame (430). It includes an inclined portion (L22) disposed to be inclined, and a horizontal portion (L23) extending from the end of the inclined portion (L22) in the direction of the moving frame (430) and disposed in the horizontal direction, and the second portion on the horizontal portion (L23). Four gripping portions F4 are provided. That is, the base L21 of the second lead wire L2 is disposed between the second inner side plate 424 and the first side plate 4231 and fixed, and the horizontal part L23 is the fourth gripping part F4. ) to maintain a fixed overall shape. If the fourth holding part F4 is broken by the application of surge power, the holding state of the horizontal part L23 is released, so that the horizontal part L23 and the inclined part L22 are elastically deformable.

The first lead wire (L1) is disposed between the first inner side plate (426) and the second side plate (4232) and fixed to the base (L11), and from the lower end of the base (L11) toward the moving frame (430). It includes an inclined portion L12 disposed inclinedly and a vertical portion L13 disposed in a vertical direction from a lower end of the inclined portion L12, and a third gripping portion F3 is provided at the vertical portion L13. . That is, the base L11 of the first lead wire L1 is disposed between the first inner plate 426 and the second side plate 4232 and fixed, and the vertical part L13 is attached to the third gripping part F3. It is gripped and fixed as a whole. At this time, when the surge power is applied from the outside and the third gripping part F3 is broken, the inclined part L12 and the vertical part L13 are elastically deformable.

The locking jaw 434 of the moving frame 430 is caught by the vertical portion L13 of the first lead line L1, and the contact portion 436 of the moving frame 430 is the second lead line L2. It is spaced apart from the inclined portion L22 by a predetermined interval. At this time, when the moving frame 430 is moved, the contact portion 436 comes into contact with the inclined portion L22 .

The moving frame 430 is moved by the pulling force of the first driving unit S1 and the second driving unit S2.

In order to stably install the second driving unit S2, a concave portion L211 is formed on one side of the base L21 of the second lead wire L2, and a through hole (L211) is formed on one side of the concave portion L211. L212) is formed. In addition, a concave portion 4241 is formed on one side of the second inner plate 424 , and a through portion 4242 is formed on one side of the concave portion 4241 . At this time, one side end (right side in the drawing in the case of the embodiment) of the second driving part S2 passes through the groove portion L211 of the second lead wire L2 and the groove portion 4241 of the second inner plate 424. It is then bent and inserted into the through hole L212 of the second lead wire L2 and the through hole 4242 of the second inner plate 424 . By this configuration, one side (the right side in the drawing in the case of the embodiment) of the second driving unit S2 is fixed.

A second fixing jaw 437 is formed in the second concave portion 438 of the moving frame 430 to fix the other side (left side in the drawing in the case of the embodiment) of the second driving unit S2. The second concave portion 438 may be formed on a side surface of the lower plate 435 in the direction of the second fixing portion S2 . The second fixing jaw 437 includes a plate-shaped protrusion plate 4371 protruding from the bottom plate 435 , a lower opening portion 4373 formed below the protrusion plate 4371 , and the protrusion portion 4371 ). It may include an upper opening portion 4372 formed on the upper side of the. In this case, the other side of the second driving part S2 may pass through the lower opening part 4373 and then be bent, and then pass through the upper opening part 4372 and be caught.

In addition, a concave portion 4231-1 is formed on one side of the first side plate 4231 of the support plate 420 to fix one side (the right side in the drawing in the case of the embodiment) of the first fixture S1, and , a through-hole 4231-2 is formed on one side of the concave portion 4231-1 so that the end of the first driving unit S1 passes through the concave portion 4231-1 and then is bent to form the through-hole 4231 -2) and one side (right side in the drawing) of the first driving unit S1 may be fixed.

In addition, a first fixing jaw 432 is formed on one side of the connecting plate 431 to fix the other side (left side in the drawing) of the first fixing member S1. The first fixing jaw 431 may be formed in the same manner as the second fixing jaw 437 to fix the other side of the first fixing jaw S1.

On the other hand, an opening 425-1 is formed in the lower plate 425 of the support plate 420 in the longitudinal direction so that the lower end of the lower plate 435 of the moving frame 430 is inserted and moved. . It can be implemented so that the moving frame 430 moves accurately by the opening 4251 .

As described above, the present invention is provided with a plurality of gripping parts having multiple levels of breaking strength due to heat generated due to deterioration of the varistor, and the gripping parts are sequentially broken according to the strength of the surge power to remove the moving frame in stages It moves and generates a predetermined electrical signal.

To this end, the base module BM is formed in a U-shape and further includes a base case BM1 on which the top module TM is seated. In the base case BM1, a plurality of switches SW that are in contact with each other according to the movement of the moving frame 430 are spaced apart from each other by a predetermined interval. In addition, an opening BM2 is formed in an upper portion of the base case BM1 to expose the switch SW. The exposed switch SW is turned on by being pressed by the lower plate 435 of the moving frame 430 .

That is, as shown in FIG. 21 , in a normal state in which surge power is not applied, the lower plate 435 of the moving frame 430 is a specific switch SW, for example, a first switch disposed on the left side of the drawing ( SW1) may be pressed to turn on, and the second switch SW2 disposed on the right side in the drawing may be turned off without being pressurized. According to the signal of the switch, the control unit CON may determine the normal state and display this state on a predetermined display unit DP.

22, when the primary surge power is applied, the moving frame 430 moves first and the lower plate 435 does not press the first switch SW1 and the second switch SW2, so that all The switch can be turned OFF. According to the signal of the switch, the control unit CON may identify the replacement notice state and display this state on a predetermined display unit DP.

As shown in FIG. 23, when additional surge power is applied, the moving frame 430 moves additionally, and the lower plate 435 presses only the second switch SW2 without pressing the first switch SW1. The first switch SW1 may be in an OFF state and the second switch SW2 may be in an ON state. According to the signal of the switch, the control unit CON may identify the replacement state and display this state on a predetermined display unit DP.

Hereinafter, the present invention will be described step by step with reference to FIGS. 21 to 23 .

First, in FIG. 21 , a normal state in which no surge power is applied is shown. In this case, since the moving frame 430 is caught by the first lead wire L1, it is fixed at the initial position even when the first driving part S1 and the second driving part S2 are pulled. In this state, as described above, the first switch SW1 may be pressurized to be in an ON state, and the second switch SW2 disposed on the right side of the drawing may be in an OFF state without being pressurized to indicate a normal state.

As shown in FIG. 22 , if surge power is applied and the first gripper is broken, a portion of the first lead wire L1 except for the base L11 is freely deformable. Accordingly, the moving frame 430 caught by the first lead wire L1 is moved to the right in the drawing by the first driving unit S1 (see FIG. 21 ) and the second driving unit S2 (see FIG. 21 ). This is because when the moving frame 430 moves in a state where the first gripper of the first lead wire L1 is broken, a portion of the first lead wire L1 except for the base L11 is deformed and the moving frame 430 moves. because it allows

However, since the second gripping part F2 is currently held, the second lead wire L2 is in a non-deformable state. Accordingly, while the moving frame 430 is moving, the moving frame 430 is stopped while the contact portion 436 is in contact with the inclined portion L22 of the second lead wire L2.

In this state, the first switch SW1 is spaced apart from the lower plate 435 to be in an OFF state, and the lower plate 435 does not reach the second switch SW2, so it is also in an OFF state to indicate a replacement notice state. have.

If additional surge power is applied or a higher surge power is applied, as shown in FIG. 23 , the second holding part is broken and the inclined part L22 and the horizontal part L23 except for the base L21 among the second lead wires L2. ) is deformable. Accordingly, the moving frame 430 in contact with the second lead line L2 is additionally moved by the first and second driving units. By the movement of the moving frame 430, the first switch SW1 is turned OFF, and the second switch SW2 is turned ON by pressing the lower plate, indicating a replacement state.

Although the present invention has been described in detail through specific examples, this is intended to describe the present invention in detail, and the present invention is not limited thereto, and by those of ordinary skill in the art within the technical spirit of the present invention. It is clear that the modification or improvement is possible.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

100: top module 110: case
111: indicator hole 120: support plate
121: top plate 122: support plate
123: side plate 130: moving frame
134: hooking jaw ` 136: contact part
411: indicator hole 420: support plate
421: first open part 422: second open part
430: moving frame 431: base
432: first extension 433: second extension
434: connection part 435: linkage part

Claims (11)

A top module (TM) having a varistor (MOV), and a base module (BM) provided with the top module (TM),
The top module TM includes a case TM1 having the varistor MOV therein, a support plate SP installed inside the case TM1 and supporting the varistor MOV, and the support plate ( A frame (N) movably provided in the SP), a driving unit (S) provided on one side of the support plate (SP) while pulling the frame (N), and a multi-step gripping unit for gripping the frame (N) (FU);
The base module (BM) includes a plurality of switches (SW) that are turned on or off according to the movement of the frame (N),
The multi-step gripping unit FU is broken due to heat due to deterioration of the varistor MOV, while the multi-step gripping unit FU is provided with a plurality of different breaking strength due to the heat generation,
The multi-step gripping unit FU is broken step by step according to the strength of the surge power, the frame N moves step by step, and the plurality of switches SW are turned on or off, respectively, to determine the degree of deterioration of the varistor MOV represented in multiple stages,
The switch (SW) includes a first switch (SW1) and a second switch (SW2) arranged in a specific direction inside the base module (BM) and spaced apart a specific distance,
The case TM1 uses a hollow-shaped first case 110 in which the varistor MOV is provided,
The support plate SP uses the first support plate 120 in which the varistor MOV is disposed and supported and a portion of the varistor MOV is exposed,
The frame N is provided on one side of the first support plate 120 and uses a rotation frame 130 that is rotatably provided around a point,
The driving unit S uses a spring, one side is connected to the rotating frame 130 to pull the rotating frame 130 , and the other side is fixed to the first supporting plate 120 ,
The multi-stage gripping unit FU is provided on one side of the first support plate 120 , the rotating frame 130 is caught, and a lead wire L made of an elastic material, and the first support plate 120 on one side. It is provided with a stopper 150 made of an elastic material to which the rotation frame 130 is caught, is installed on one side of the varistor MOV, is exposed through an empty space of the first support plate 120, and connects the lead wire L. The first gripper F1 to be gripped, and the second wave installed on the other side of the varistor MOV, exposed through the empty space of the first support plate 120 and gripping the stopper 150 . A surge protection device of a multi-step switching method including a branch (F2). delete According to claim 1,
The breaking strength of the first holding part (F1) is set to be lower than the breaking strength of the second holding part (F2),
In a normal state in which surge power is not introduced, the rotating frame 130 is caught by the lead wire L, and the rotating frame 130 turns on the first switch SW1 and turns off the second switch SW2,
Surge power is first introduced and heat is generated due to deterioration of the varistor MOV, so that the first gripping part F1 is broken first, so that the rotation frame 130 first rotates and then comes into contact with the stopper 150 to stop the rotation. is stopped, and the rotating frame 130 turns off both the first switch SW1 and the second switch SW2,
When additional surge power is introduced, the second gripper F2 is broken and the rotation frame 130 is additionally rotated so that the rotation frame 130 turns off the first switch SW1, and the second switch SW2 turns on Multi-step switching surge protection device. According to claim 1,
The rotating frame 130 includes a plate-shaped base 131 that rotates about one side of the support plate 120 , and a first extension 132 extending upward from the base 131 and spaced apart from each other. and a second extension part 133 and a connection part 134 connecting the first extension part 132 and the second extension part 133 in a horizontal direction,
An insertion hole 1311 is formed at one point of the base 131 and into which the rotation pin SO protruding from the first support frame 120 is inserted,
A first protrusion 1312 and a second protrusion 1313 are formed on both sides of the insertion hole 1311 of the base 131, respectively, and extend downward to contact the switch SW,
A surge protection device of a multi-step switching method in which a locking groove 134-2 is formed at one side of the connection part 134 to catch the lead wire L. According to claim 1,
The stopper 150 includes a fixing plate 151 fixed to one side of the first support plate 120 , a bent part 152 bent at an end of the fixing plate 151 to cover the second gripping part F2 , and the It is formed at the end of the bent part 152 and includes a locking part 153 bent so as to be spaced apart from the varistor MOV,
The second gripper (F2) grips the bent portion (152),
When the rotating frame 130 rotates, the first extension 132 passes apart from the bent portion 152 and the engaging portion 153 , and the second extension 133 is larger than the first extension 132 . It is formed to be close to the varistor (MOV) and the second extension part 133 is caught by the locking part 153 to stop the rotation,
A surge protection device of a multi-step switching type in which the second extension part 133 rotates past the locking part 153 while the bent part 152 is separated from the varistor MOV when the second gripping part F2 is broken. According to claim 1,
The lead wire (L) is fixed by a holder 160 formed on one side of the first support plate 120,
The holder 160 is formed on the support plate 120 and includes a first holder 161 and a second holder 162 spaced apart from each other by a predetermined distance, and the first holder 161 and the second holder ( 162) between the first space portion O1 in the horizontal direction and the second space portion O2 in the vertical direction are formed,
The lead wire (L) is disposed in a horizontal direction and is formed in a vertical direction from a horizontal base (L1) inserted into the first space (O1), and one side of the horizontal base (L1), and is formed in the second space (O2). ) is inserted into the vertical base (L2), the horizontal extension (L3) extending in the horizontal direction from the end of the vertical base (L2), and the end of the horizontal extension (L3) is bent upward in an inclined direction Includes a locking part (L4),
The locking part (L4) is caught in the locking groove (134-2) of the rotation frame 130,
The first gripper (F1) is a surge protection device of a multi-step switching method for gripping the horizontal extension portion (L3) or the locking portion (L4). According to claim 1,
The switch (SW) includes a first switch (SW1) and a second switch (SW2) arranged in a specific direction inside the base module (M) and spaced apart a specific distance,
The case TM1 uses a hollow second case 410 in which the varistor MOV is provided,
The support plate SP uses a second support plate 420 on which the varistor MOV is disposed on one side,
The frame (N) uses a moving frame 430 that is movably provided on one side of the second support plate 140,
The driving unit S uses a spring, one side is connected to the moving frame 430 to pull the moving frame 430, and the other side is fixed to the second support plate 420,
The multi-step gripping unit FU includes a first lead wire L1 and a second lead wire L2 provided on one side of the second support plate 420, and a third gripping part for gripping the first lead wire L1 ( F3) and a fourth gripper (F4) for gripping the second lead wire (L2), wherein the first lead wire (L1) and the second lead wire (L2) are disposed along the moving direction of the moving frame (430) and spaced apart from each other, the third holding part F3 is formed on one side of the varistor MOV, passes through the second support plate 420 and is attached to the first lead wire L1, and a fourth The holding part F4 is formed on the other side of the varistor MOV, and is attached to the second lead wire L2 after passing through the second support plate 140. A surge protection device of a multi-step switching method. 8. The method of claim 7,
The breaking strength of the third holding part (F3) is set lower than the breaking strength of the fourth holding part (F4),
In a normal state in which surge power is not applied, the moving frame 430 is caught by the first lead wire L1 so that the moving frame 430 turns on the first switch SW1 and the second switch SW2 turns off make it,
The surge power is first introduced and heat is generated due to the deterioration of the varistor MOV, so that the first gripping part F1 is broken first, so that the moving frame 430 moves first and comes into contact with the second lead wire L2. The movement is stopped, and the moving frame 430 turns off both the first switch SW1 and the second switch SW2,
When additional surge power is introduced, the fourth gripper F4 is broken, and the moving frame 430 is further moved so that the moving frame 430 turns off the first switch SW1, and turns on the second switch SW2. Multi-step switching surge protection device. 8. The method of claim 7,
The support plate 420 has a plate shape and a support plate 422 disposed in a vertical direction, an upper plate 421 provided on an upper side of the support plate 422 and disposed in a horizontal direction, and on both sides of the support plate 422 . Including side plates 423 disposed respectively,
The driving unit S uses a spring, one side is connected to the moving frame 430 to pull the moving frame 430 , and the other side is a first driving unit S1 fixed to the support frame 420 and , a second driving part (S2) disposed below the first driving part (S1) and having one side connected to the moving frame (430) to pull the moving frame (430), and the other side being fixed to the second lead line (L2). ), including
The moving frame 430 has a lower end plate 435 to which the second driving unit S2 is connected and in contact with the switch SW, and an extension portion 437 extending upward from one side of the lower end plate 435 . ), a locking jaw 434 bent in the horizontal direction at the upper end of the extension part 437 and a portion protrudes to catch the first lead wire L1, and the locking jaw 434 is upward from one side A multi-step switching method comprising an extension plate 431 extending and connected to the first driving part S1, and a contact part 436 protruding in the direction of the second lead line L2 from one side of the lower plate 435. surge protection device. 8. The method of claim 7,
The support plate 420 includes a first inner plate 424 and a second inner plate 426 formed to be spaced apart from each other by a predetermined interval inside both side plates 423, and the first inner plate 424 and the second inner plate. Includes a lower plate 425 connecting the lower side of the plate 426 in the horizontal direction,
The first inner plate 424 is formed to be spaced apart from the lower end of the first side plate 4231, which is one of the side plates 423, by a predetermined interval in the inner direction, and the second inner plate 426 is the side plate 423. ) from the upper end of the second side plate 4232, which is the other side plate, is formed to be spaced apart from each other by a predetermined interval in the inner direction,
The second lead wire (L2) is disposed between the second inner plate (424) and the first side plate (4231) and fixed to the base (L21), and from the upper end of the base (L21) toward the moving frame (430). It includes an inclined portion (L22) disposed to be inclined, and a horizontal portion (L23) extending from the end of the inclined portion (L22) in the direction of the moving frame (430) and disposed in the horizontal direction, and the second portion on the horizontal portion (L23). 4 is provided with a grip portion (F4),
The first lead wire (L1) is disposed between the first inner side plate (426) and the second side plate (4232) and fixed to the base (L11), and from the lower end of the base (L11) toward the moving frame (430). It includes an inclined portion (L12) disposed to be inclined, and a vertical portion (L13) disposed in a vertical direction from the lower end of the inclined portion (L12), wherein the vertical portion (L13) is provided with a third holding portion (F3), ,
The locking jaw 434 of the moving frame 430 is caught by the vertical portion L13 of the first lead line L1, and the contact portion 436 of the moving frame 430 is the second lead line L2. A surge protection device of a multi-step switching method spaced apart from the inclined portion (L22) by a predetermined interval.
According to claim 1,
The base module (BM) further includes a base case (BM1) formed in a U-shape on which the top module (TM) is seated,
In the base case (BM1), a plurality of switches (SW) in contact with each other according to the rotation of the frame (N) are disposed spaced apart from each other by a predetermined interval,
An upper part of the base case BM1 is formed with an opening BM2 to expose the switch SW,
The multi-step gripping unit FU is sequentially broken by the surge power, and the frame N moves step by step, and the plurality of switches SW are turned on or off, respectively, to determine the degree of deterioration by the switch SW. Surge protection device with multi-step switching method that transmits a signal.

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