KR20230135956A - Shutter and distribution board having the same - Google Patents

Abstract

The present invention relates to a switchboard shutter and a switchboard including the same which comprise: a shutter link unit that can be rotated by a circuit breaker; a shutter unit that moves upward or downward as the shutter link unit rotates to open an opening hole; and a guide unit coupled to the shutter unit and configured to guide the shutter unit in a process of moving the shutter unit along a shutter guide bar as the shutter link unit rotates. The guide unit is made to make point contact with the shutter guide bar.

Description

Distribution board shutter and distribution board including the same {SHUTTER AND DISTRIBUTION BOARD HAVING THE SAME}

The present invention relates to a switchboard shutter and a switchboard including the same, and more specifically, to a switchboard shutter that can eliminate unsafe operations during the movement of the shutter and a switchboard including the same.

Typically, switchboards are installed at industrial sites such as power plants and substations for various purposes such as operation or control of power and operation of electric motors. Circuit breakers and various electrical devices are installed in the enclosure of the switchboard. Generally, circuit breakers are stored inside the circuit breaker room of a switchboard.

Here, when there is no circuit breaker in the circuit breaker room, a structure that can prevent contact with conductive parts is required for user safety. What can be used at this time is the switchboard shutter.

Figure 1 is a diagram showing a conventional switchboard main body and shutter unit. Figure 2 is a diagram showing a typical conventional circuit breaker. Figure 3 is a diagram showing a conventional shutter unit.

Referring to FIG. 1, the breaker of FIG. 2 can be inserted into the breaker chamber (1a) inside the distribution board (1).

As the circuit breaker is inserted, the shutter rollers 41 and 51 of the shutter are pressed. Through this, the upper and lower shutters 60 and 61 can be moved up and down, and the main circuit part 11 and the conductor part 12 of the circuit breaker can be connected to the bushing assembly on the back of the switchboard 1.

However, referring to FIG. 3, the combination of the shutter guide bar 9 and the upper shutter 60 and lower shutter 61 is, for example, a shutter guide in the upper shutter hole 60a1 formed in the upper shutter plate 60a. It consists of a structure in which the bar 9 is inserted and moved.

At this time, during the operation of the shutters (60, 61), abnormal phenomena may occur during operation due to friction between the shutter guide bar (9) and the four shutter hole portions between the shutters (60, 61) and the shutter guide bar (9). You can.

For example, the friction force between the left and right shutter hole portions of the shutter and the shutter guide bar 9 may be different, so that only either the left or right portion of the shutter rises or falls, causing the shutter to be arranged crookedly.

In this way, if the shutter 60, 61 is inserted with the shutters 60 and 61 skewed, there is a problem in that the shutter itself is shocked by the circuit breaker, causing damage.

Therefore, the present invention was conceived to solve the above problems, and provides a switchboard shutter that can reduce abnormal operation of the shutter due to frictional force with the shutter guide bar during operation of the shutter and a switchboard including the same. It is considered a technical challenge.

In order to achieve the above object, the switchboard shutter of the present invention includes a shutter link part rotatable by a circuit breaker, a shutter part that moves upward or downward to open the opening hole as the shutter link part rotates, and the shutter part. It is coupled to and includes a guide part configured to guide the shutter part in the process of moving the shutter part along the shutter guide bar as the shutter link part rotates, and the guide part is made to make point contact with the shutter guide bar.

In addition, the shutter link unit includes an upper shutter link and a lower shutter link disposed up and down, and the shutter unit may include an upper shutter connected to the lower shutter link and a lower shutter connected to the upper shutter link. .

In addition, the shutter link unit is connected to a shutter roller that is rotated by being pressed against the distribution board body, a horizontal link that rotates upward or downward as the shutter roller rotates, and the horizontal link, and the horizontal link moves upward or downward as the horizontal link rotates. It may include a vertical link that moves downward, and the shutter unit may include a shutter connection plate that protrudes so as to overlap at least a portion of the vertical link, and the guide unit may be disposed adjacent to the shutter connection plate.

In addition, the guide part is rotatable in contact with a first wing part protruding toward the shutter connection plate, a second wing part spaced apart from the first wing part and protruding toward the shutter connection plate, and the shutter guide bar. It may include a guide roller coupled to the guide portion.

Additionally, the shutter guide bar may be interposed between the first and second wings of the guide unit, and the guide roller may be in point contact with the shutter guide bar.

Additionally, the guide portion may include a plurality of first ribs that protrude to the outside of the first wing portion and are spaced apart from each other.

In addition, the guide portion may include a connecting protrusion that protrudes outward from the second wing portion, is provided in plural pieces, is arranged to be spaced apart from each other, and is insertable into the shutter portion.

In addition, one side of the first wing and the second wing are disposed to be spaced apart from each other so that the shutter guide bar can be inserted, and a roller opening is provided on the other side of the first and second wing to expose the guide roller. can be formed.

In addition, the guide portion may further include a second rib disposed on both sides of the roller opening and configured to surround an inner portion of the connecting protrusion.

In addition, the guide part may further include a sub-guide roller disposed on at least one of the first wing part and the second wing part and in point contact with the shutter guide bar.

Additionally, the sub guide roller may include a first sub guide roller disposed on the first wing portion and a second sub guide roller disposed on the second wing portion.

In order to achieve the above object, the distribution board of the present invention is provided with a breaker room into which a breaker is inserted, a distribution board body in which an open hole is formed on the rear side to expose the conductor portion of the bushing assembly to the breaker room, and the distribution board body is rotatable in the distribution board body. A shutter that opens and closes the opening hole as it is coupled and rotated, and a circuit breaker that rotates the shutter unit as it enters the switchboard body, wherein the shutter includes a shutter link unit rotatable by the circuit breaker, the shutter. A shutter unit is coupled to the shutter unit and moves upward or downward to open the opening hole as the link unit rotates, and guides the shutter unit in the process of moving the shutter unit along the shutter guide bar as the shutter link unit rotates. It includes a guide part, wherein the guide part is in point contact with the shutter guide bar.

The switchboard shutter according to an embodiment of the present invention has a guide part that makes point contact with the shutter guide bar, thereby reducing friction between the shutter part and the shutter guide bar.

The guide portion of the switchboard shutter according to an embodiment of the present invention includes a first rib, thereby reducing the possibility that the first wing portion is damaged by external force or deformed by pressure applied from the side.

The second rib of the switchboard shutter according to an embodiment of the present invention can protect the connecting protrusion inside the guide portion. Additionally, the second rib can increase the rigidity of the guide portion in the space between the first and second wings.

The guide portion of the switchboard shutter according to an embodiment of the present invention is moved in point contact with the shutter guide bar, so that the friction force between the upper shutter or lower shutter and the shutter guide bar can be minimized during the process of moving the upper shutter or lower shutter.

In addition, through this, the switchboard shutter according to an embodiment of the present invention reduces friction with the shutter guide bar, and either the left or right side of the shutter generates friction with the shutter guide bar, so that the shutter is moved to a different height or one side does not rise or The problem of not going down can be reduced.

The switchboard shutter according to an embodiment of the present invention includes a guide roller of the guide part, a first sub-guide roller, and a second sub-guide roller, thereby enabling stable contact and guidance with the shutter guide bar.

In addition, since the switchboard shutter according to an embodiment of the present invention is a roller in which all components in contact with the shutter guide bar rotate, it is possible to minimize frictional force generated in the process of moving up and down in contact with the shutter guide bar.

Figure 1 is a diagram showing a conventional switchboard main body and shutter unit.
Figure 2 is a diagram showing a typical conventional circuit breaker.
Figure 3 is a diagram showing a conventional shutter unit.
Figure 4 is a diagram showing a switchboard main body and a shutter unit according to an embodiment of the present invention.
FIG. 5 is a diagram showing the shutter unit of FIG. 4.
Figure 6 is a partially exploded perspective view for explaining the coupling relationship between the shutter part and the guide part of Figure 4.
7 to 11 are views showing a right side view, a front view, a left side view, a rear view, and a top view of a guide portion according to an embodiment of the present invention.
FIG. 12 is a view of the shutter unit and guide unit of FIG. 4 viewed from above.
FIG. 13 is a view showing a plane cut along AA of FIG. 5.
FIG. 14 is a view showing a surface cut along BB of FIG. 5.
Figure 15 is a view showing a cut surface of a guide part and a shutter guide bar according to another embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention.

In the following description, in order to clarify the characteristics of the present invention, descriptions of some components may be omitted.

As used in the following description, the term "short circuit" means blocking the flow of electric current.

Figure 4 is a diagram showing a switchboard main body and a shutter unit according to an embodiment of the present invention. Figure 5 is a diagram showing the shutter unit of Figure 4. Figure 6 is a partially exploded perspective view for explaining the coupling relationship between the shutter part and the guide part of Figure 4.

A switchboard according to an embodiment of the present invention includes a switchboard body 1, a shutter 1000, and a circuit breaker.

The switchgear main body 1 is provided with a breaker chamber into which a breaker is inserted, and an open hole is formed on the rear surface to expose the conductor portion of the bushing assembly to the breaker chamber.

Specifically, as shown in FIG. 4, the switchboard main body 1 is provided with a circuit breaker chamber 1a into which a circuit breaker can be inserted. Additionally, an open hole is formed in the rear portion to expose the conductor portion of the bushing assembly to the circuit breaker chamber. At this time, the shutter 1000 (shutter unit 300) blocks the open hole.

Referring to FIG. 4, a circuit breaker is installed on the front of the switchboard, and a bushing assembly that is covered by the shutter unit 300 is placed on the back of the switchboard. The circuit breaker is inserted from the front of the switchboard and goes all the way to the back of the switchboard. The circuit breaker may drive the shutter 1000 by pressing the shutter rollers 111 and 121 of the shutter 1000 in the process of being inserted into the distribution board. The fixing plate 200 of the shutter 1000 may be coupled to the switchboard main body 1.

The shutter 1000 is rotatably coupled to the switchboard main body 1, and opens and closes the open hole as it is rotated by the circuit breaker. Specifically, the circuit breaker may rotate the shutter unit 300 according to the depth at which it enters the switchboard main body 1.

Specifically, as the breaker enters the breaker room, the main body of the breaker enters from the entrance of the switchboard main body 1 to the open hole on the back of the switchboard main body 1. At this time, the body of the circuit breaker may pressurize the shutter link portion 100 of the shutter 1000. The shutter link unit 100 pressed by the circuit breaker is rotated, and accordingly, the upper shutter 310 and the lower shutter 320 of the shutter unit 300 can move upward or downward to open the opening hole.

On the contrary, as the circuit breaker is pulled out from the switchboard body 1, the pressure on the shutter rollers 111 and 121 that had been pressurized by the circuit breaker is released, and the shutter rollers 111 and 121 are returned to their original state by the restoration spring 230. can be rotated. Accordingly, the shutter unit 300 that opened the opening hole can return to its original position.

Hereinafter, the switchboard shutter 1000 will be described with reference to the drawings.

The shutter 1000 includes a shutter link unit 100, a shutter unit 300, and a guide unit 400. Additionally, the shutter 1000 may further include a fixing plate 200 for fixing the shutter link unit 100 to the distribution board.

The shutter link unit 100 is rotatable by a circuit breaker. Specifically, the circuit breaker is introduced into the distribution board, and the circuit breaker body can pressurize the shutter link unit 100. Accordingly, the shutter link unit 100 is rotated.

In order to explain the rotation of the shutter link unit 100, the detailed configuration of the shutter link unit 100 is as follows. The shutter link unit 100 may include shutter rollers 111 and 121, horizontal links 110 and 120, and vertical links 112 and 122.

Referring to Figures 4 and 5, the shutter rollers 111 and 121 may be rotated by being pressed by a circuit breaker. As the shutter rollers 111 and 121 rotate, the ends of the horizontal links 110 and 120 away from the shutter rollers may rotate upward or downward.

Specifically, the shutter rollers 111 and 121 may include an upper shutter roller 121 and a lower shutter roller 111. As the upper shutter roller 121 is pressed by the circuit breaker, the connected upper horizontal link 120 rotates downward based on the drawing. As the lower shutter roller 111 is pressed by the circuit breaker, the connected lower horizontal link 110 rotates upward based on the drawing.

Through this, the end of the lower horizontal link 110 can be rotated toward the top, and the end of the upper horizontal link 120 can be rotated toward the bottom.

The vertical links 112 and 122 are connected to the horizontal links 110 and 120, and may be moved upward or downward as the horizontal links 110 and 120 rotate. Specifically, when the lower horizontal link 110 is rotated toward the upper side, the upper horizontal link 120 moves toward the upper side, and when the upper horizontal link 120 is rotated toward the lower side, the vertical link 122 moves toward the lower side. can be moved towards.

The shutter link unit 100 may include an upper vertical link 122 and a lower vertical link 112 arranged vertically. Additionally, the shutter unit 300 may include an upper shutter 310 connected to the lower vertical link 112 and a lower shutter 320 connected to the upper vertical link 122. The shutter unit 300 moves upward or downward as the shutter link unit 100 rotates to open the opening hole.

Specifically, each of the upper and lower links of the shutter link unit 100 is connected to a horizontal link and a vertical link.

Referring to Figure 5, the lower link includes a lower horizontal link 110 and a lower vertical link 112. As the lower shutter roller 111 rotates, the end of the lower horizontal link 110 rotates upward, and the lower vertical link 112 moves upward accordingly.

The lower link may be connected to the upper shutter 310 of the shutter unit 300. Accordingly, as the lower vertical link 112 moves upward, the upper shutter 310 moves upward to open the opening hole.

The upper link includes an upper horizontal link 120 and an upper vertical link 122. The upper horizontal link 120 and the upper vertical link 122 may be connected by a connecting pin 123.

The end of the upper horizontal link 120 rotates downward as the upper shutter roller 121 rotates, and thus the upper vertical link 122 moves downward.

The upper vertical link 122 may be connected to the lower shutter 320 of the shutter unit 300. Accordingly, as the upper vertical link 122 moves downward, the lower shutter 320 moves downward to open the opening hole.

That is, as the upper and lower links rotate, the upper shutter 310 moves upward and the lower shutter 320 moves downward to open the opening hole.

The shutter unit 300 may include shutter connection plates 314 and 324 that protrude so as to at least partially overlap the vertical link.

Specifically, referring to FIGS. 5 and 6, the upper shutter 310 includes an upper shutter connection plate 314 connected to the lower vertical link 112, and the lower shutter 320 includes the upper vertical link 122. It includes a lower shutter connection plate 324 connected to. The shutter connection plates 314 and 324 and the vertical links 112 and 122 may be connected by connection pins 115 and 125. Accordingly, as the vertical link moves up and down, the upper shutter 310 and lower shutter 320 may move up and down.

The guide unit 400 is coupled to the shutter unit 300, and guides the shutter unit 300 in the process of moving the shutter unit 300 along the shutter guide bar 90 as the shutter link unit 100 rotates. It is done so that The guide unit 400 may include a first guide 410 disposed at the upper portion and a second guide 420 disposed at the lower portion.

Referring to FIG. 5, the guide unit 400 may be disposed adjacent to the shutter connection plates 314 and 324. Specifically, the guide unit 400 is connected to the shutter connection plate 314 so that the shutter guide bar 90 can be placed between the guide unit 400 and the shutter connection plates 314 and 324 or through the guide unit 400. , 324) is placed adjacent to it.

At this time, the guide unit 400 may be in point contact with the shutter guide bar 90.

Specifically, referring to FIGS. 5 and 13 , a shutter guide bar 90 may be inserted into the guide portion 400. The guide roller 430 is disposed in point contact with the shutter guide bar 90. While the upper shutter 310 or lower shutter 320 moves upward or downward, the guide roller 430 may maintain point contact with the shutter guide bar 90. Accordingly, the friction force between the upper shutter 310 or lower shutter 320 and the shutter guide bar 90 can be minimized while the upper shutter 310 or lower shutter 320 moves.

The fixing plate 200 can fixedly couple the shutter 1000 to the distribution board main body 1. Specifically, the fixing plate 200 may include a protruding plate 210, a stopper 220, and a restoration spring 230.

The protruding plate 210 can protect the shutter 1000 to prevent the circuit breaker from pressing some of the components of the shutter 1000 in situations such as when the circuit breaker is misplaced in the process of being retracted.

The stopper 220 is configured to lock the upper and lower links while the upper and lower links are rotated. Accordingly, excessive rotation of the upper and lower links can be prevented.

The restoration spring 230 provides a restoring force to the rotated upper link and lower link so that the rotated upper link and lower link return to their original positions. Accordingly, the positions of the upper link and lower link can be restored when external pressure such as a circuit breaker is removed. And, the shutter unit 300 may block the original bushing assembly.

Meanwhile, the shutter unit 300 and the guide unit 400 are connected as follows.

Referring to Figures 6 and 7, a roller hole 305 and a connection hole 306 may be formed in the upper shutter 310. Specifically, a roller hole 305 and a connection hole 306 may be formed in an area of the upper shutter 310 adjacent to the upper shutter connection plate 314.

A protrusion protruding from the end of the guide roller 430 is inserted into the roller hole 305. When the guide roller 430 is rotated, the protrusion of the guide roller 430 rotates inside the roller hole 305, and the relative positions of the guide portion 400 and the upper shutter 310 can be maintained so as not to change.

A connecting protrusion 470 protruding from the guide portion 400 may be inserted into the connecting hole 306. Accordingly, the guide unit 400 can be fixedly coupled to the upper shutter 310.

The switchboard shutter 1000 according to an embodiment of the present invention has a guide part 400 in point contact with the shutter guide bar 90, thereby reducing friction between the shutter part 300 and the shutter guide bar 90. there is.

Meanwhile, the roller hole 420a of the guide part 400 is located toward the opening 423 between the first wing part 421 and the second wing part 422 rather than the position of the connecting protrusion 470 of the guide part 400. Can be placed close together.

Specifically, referring to FIG. 8, the roller hole 420a of the guide part 400 is positioned at the first wing part 421 and the second wing part 422 rather than the position of the connecting protrusion 470 of the guide part 400. It is disposed close to the end where the opening 423 is formed. Referring to FIG. 14, this is so that the second rib 460 formed around the connecting protrusion 470 can guide the guide roller 430.

7 to 11 are views showing a right side view, a front view, a left side view, a rear view, and a top view of the guide unit 400 according to an embodiment of the present invention. FIG. 12 is a view of the shutter unit 300 and guide unit 400 of FIG. 4 viewed from above. FIG. 13 is a view showing a plane cut along line A-A of FIG. 5. FIG. 14 is a view showing a surface cut along line B-B of FIG. 5.

According to one embodiment of the present invention, the guide part 400 includes a first wing part 421, a second wing part 422, and a guide roller 430.

Specifically, referring to FIGS. 11 and 13 , the first wing portion 421 may protrude toward the shutter connection plates 314 and 324. The second wing 422 is spaced apart from the first wing 421 and may protrude toward the shutter connection plates 314 and 324. The guide roller 430 may be rotatably coupled to the guide portion 400 in contact with the shutter guide bar 90.

The first wing portion 421 and the second wing portion 422 may be arranged parallel to each other and spaced apart from each other. Additionally, a shutter guide bar 90 may be interposed between the first wing portion 421 and the second wing portion 422 of the guide portion 400. Additionally, the guide roller 430 may be in point contact with the shutter guide bar 90.

An opening 423 is formed between the first wing 421 and the second wing 422, so that when the shutter part 300 and the guide part 400 are assembled, the shutter guide bar passes through the above-described opening 423. (90) can be inserted.

<Exposure of guide roller 430>

The guide unit 400 may have a plurality of openings for exposing the guide roller 430. Referring to FIGS. 7 to 13 , a roller opening 462 may be formed on the other side of the first wing 421 and the second wing 422 to expose the guide roller 430. Referring to FIG. 13, the guide roller 430 may be exposed to the outside through the roller opening 462 and come into contact with the shutter guide bar 90.

<Combination of guide roller (430)>

Meanwhile, referring to FIGS. 8, 10, and 13, the first wing 421 and the second wing 422 have a roller hole 420a into which a protrusion protruding from the end of the guide roller 430 is inserted. It can be provided. Accordingly, when the guide roller 430 is rotated in contact with the shutter guide bar 90, it can be easily rotated inside the roller hole 420a. Also, the guide roller 430 and the guide unit 400 may not move due to pressure from the shutter guide bar 90.

<Configuration of the guide portion 400 - first wing portion 421, second wing portion 422, first rib 450, second rib 460>

The guide unit 400 protrudes to the outside of the first wing unit 421 and may include a plurality of first ribs 450 arranged to be spaced apart from each other.

Specifically, referring to FIGS. 7 to 9 , the guide portion 400 may include a first rib 450 protruding outward from the first wing portion 421. The first ribs 450 may be arranged to be spaced apart from each other on the outer surface of the first wing portion 421. The first rib 450 may be disposed at both ends and a central portion of the outer surface of the first wing 421. In this embodiment, the number of first ribs 450 is four. However, this is subject to change for reasons such as design.

By including the first rib 450, the guide portion 400 can reduce the possibility that the first wing portion 421 is damaged by external force or deformed by pressure applied from the side.

In addition, the guide portion 400 protrudes to the outside of the second wing portion 422, is provided in plural, is arranged to be spaced apart from each other, and may include a connecting protrusion 470 that can be inserted into the shutter portion 300. there is.

Specifically, referring to FIGS. 7 to 13 , a connecting protrusion 470 protrudes outward from the second wing portion 422. The connection protrusion 470 may be inserted into the connection hole 306 formed in the shutter unit 300. The connection protrusion 470 may be inserted into the connection hole 306 of the shutter unit 300 in an interference fit manner. Accordingly, the guide unit 400 may not be easily separated from the shutter unit 300. However, the guide portion 400 and the shutter portion 300 may be coupled using a bolt and nut method rather than an interference fit method of the connecting protrusion 470.

Referring to FIG. 13, one side of the first wing 421 and the second wing 422 may be arranged to be spaced apart from each other so that the shutter guide bar 90 can be inserted. Additionally, the shutter guide bar 90 is disposed to make point contact with the guide roller 430. In this way, the area where the guide roller 430 makes point contact on the shutter guide bar 90 may be referred to as the contact area 431.

Since the shutter guide bar 90 and the guide roller 430 are in point contact, the friction force between the guide roller 430 and the shutter guide bar 90 is generated during the movement of the guide portion 400 along the shutter guide bar 90. can be minimized.

Meanwhile, the first wing 421 may be formed to be thicker than the second wing 422. Specifically, referring to FIG. 11 , the first wing portion 421 may be thicker than the second wing portion 422 . This means that when the circuit breaker enters the shutter unit 300, if there is a problem in driving the shutter unit 300, the circuit breaker may hit the first wing unit 421.

Accordingly, a first rib 450 may be formed on the outside of the first wing 421 to protect the guide part 400. Also, the first wing 421 may be formed to be thicker than the second wing 422.

Referring to FIG. 12, a shutter guide bar 90 (not shown in FIG. 12) may be inserted between the first wing 421 and the second wing 422. The shutter guide bar 90 is covered on one side by the upper shutter connection plate 314, is surrounded by the first wing 421 and the second wing 422 in the up and down directions, and is surrounded on the other side by the first wing 421 and the second wing 422. It may be arranged to contact the guide roller 430.

The guide portion 400 may further include a second rib 460 disposed on both sides of the roller opening 462 and surrounding the inner portion of the connecting protrusion 470.

Specifically, referring to FIGS. 6, 7, and 9, the guide portion 400 may include a second rib 460. The guide portion 400 includes a second rib 460 that surrounds the inner portion of the connecting protrusion 470.

The second rib 460 may protect the connecting protrusion 470 inside the guide portion 400. In addition, the second rib 460 is between the first wing 421 and the second wing 422 to determine the rigidity of the guide part 400 in the space between the first wing 421 and the second wing 422. can increase.

Furthermore, referring to FIG. 14, the end of the second rib 460 is spaced apart from the guide roller 430 when the guide roller 430 rotates and may serve to guide the guide roller 430. Specifically, when the guide roller 430 deviates from its position for reasons such as receiving an external force, the end of the second rib 460 is connected to the guide roller 430 so that the guide roller 430 does not deviate from the guide portion 400. I can guide you.

The guide unit 400 of the switchboard shutter 1000 according to an embodiment of the present invention makes point contact with the shutter guide bar 90 and moves in the contact area 431, thereby forming the upper shutter 310 or the lower shutter 320. In the process of moving, friction between the upper shutter 310 or lower shutter 320 and the shutter guide bar 90 can be minimized.

In addition, through this, the switchboard shutter 1000 according to an embodiment of the present invention reduces friction with the shutter guide bar 90, and either the left or right side of the shutter 1000 generates friction with the shutter guide bar 90. This can reduce the problem of the devices moving at different heights or one side not going up or down.

Figure 15 is a diagram showing a cut surface of the guide part 400 and the shutter guide bar 90 according to another embodiment of the present invention.

The guide part 400 of the switchboard shutter 1000 according to an embodiment of the present invention is disposed on at least one of the first wing part 421 and the second wing part 422, and has a shutter guide bar 90 and a point It may further include a sub-guide roller 430 in contact.

Specifically, the sub guide roller 430 includes a first sub guide roller 441 disposed on the first wing 421, and a second sub guide roller 442 disposed on the second wing 422. can do.

Referring to FIG. 15, a first sub guide roller 441 and a second sub guide roller are formed on the surfaces of the first wing part 421 and the second wing part 422 of the guide part 400 of the switchboard shutter 1000, respectively. (442) is placed. Each of the first sub guide roller 441 and the second sub guide roller 442 may be in contact with the upper and lower ends of the shutter guide bar 90 based on the drawing.

In this way, the areas where the first sub guide roller 441 and the second sub guide roller 442 make point contact with the shutter guide bar 90 may be referred to as contact areas 441a and 442a. At this time, the area where the first sub guide roller 441 and the second sub guide roller 442 contact the shutter guide bar 90 may be point contact.

The switchboard shutter 1000 according to an embodiment of the present invention includes a guide roller 430, a first sub guide roller 441, and a second sub guide roller 442 of the guide portion 400, thereby forming a shutter guide bar ( 90) and stable contact and guidance are possible.

In addition, since the switchboard shutter 1000 according to an embodiment of the present invention is a roller in which all components in contact with the shutter guide bar 90 are rotating rollers, the friction force generated in the process of moving up and down in contact with the shutter guide bar 90 can be minimized.

As the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited to the above-described embodiments, and various modifications and modifications by those skilled in the art using the basic concept of the present invention as defined in the following patent claims are made. Improved forms are also included in the scope of the present invention.

1000 shutter
90 shutter guide bar
100 shutter link unit
110 lower transverse link
111 Lower shutter roller
112 lower vertical link
113 Connecting member
115 connection pin
120 upper horizontal link
121 Upper shutter roller
122 upper vertical link
123 connection member
125 connection pin
200 fixing plate
210 protruding plate
220 stopper
230 restoration spring
300 shutter unit
305 roller hole
306 connection hole
310 upper shutter
314 Upper shutter connection plate
320 lower shutter
324 Lower shutter connection plate
400 guide unit
410 1st guide
420 2nd guide
420a roller hole
421 1st wing part
422 2nd wing part
423 opening
430 guide roller
431 contact area
440 sub guide roller
441 1st sub guide roller
441a contact area
442 2nd sub guide roller
442a contact area
450 first rib
460 second rib
462 roller opening
470 connecting protrusion

Claims (12)

A shutter link unit rotatable by a circuit breaker;
A shutter unit that moves upward or downward as the shutter link unit rotates to open the opening hole; and
A guide part coupled to the shutter unit and configured to guide the shutter unit in the process of moving the shutter unit along the shutter guide bar as the shutter link unit rotates,
The guide part,
Made to make point contact with the shutter guide bar,
Switchboard shutter.
According to paragraph 1,
The shutter link unit,
It includes an upper shutter link and a lower shutter link disposed vertically,
The shutter unit,
Comprising an upper shutter connected to the lower shutter link and a lower shutter connected to the upper shutter link,
Switchboard shutter.
According to paragraph 2,
The shutter link unit,
A shutter roller that is pressed against the switchgear body and rotated;
a horizontal link that rotates upward or downward as the shutter roller rotates; and
A vertical link is connected to the horizontal link and moves upward or downward as the horizontal link rotates,
The shutter unit,
It includes a shutter connection plate that protrudes so as to overlap at least a portion of the vertical link,
The guide portion is disposed adjacent to the shutter connection plate,
Switchboard shutter.
According to paragraph 3,
The guide part,
a first wing portion protruding toward the shutter connection plate;
a second wing part spaced apart from the first wing part and protruding toward the shutter connection plate; and
Comprising a guide roller that is in contact with the shutter guide bar and rotatably coupled to the guide portion,
Switchboard shutter.
According to paragraph 4,
The shutter guide bar is interposed between the first wing portion and the second wing portion of the guide portion,
The guide roller is made to make point contact with the shutter guide bar,
Switchboard shutter.
According to clause 5,
The guide part,
Protruding to the outside of the first wing portion and comprising a plurality of first ribs arranged to be spaced apart from each other,
Switchboard shutter.
According to clause 6,
The guide part,
Protruding to the outside of the second wing, comprising a plurality of connecting protrusions arranged to be spaced apart from each other and insertable into the shutter unit,
Switchboard shutter.
In clause 7,
One side of the first wing portion and the second wing portion,
The shutter guide bars are arranged to be spaced apart from each other so that they can be inserted,
A roller opening is formed on the other side of the first wing and the second wing to expose the guide roller,
Switchboard shutter.
According to clause 8,
The guide part,
Further comprising a second rib disposed on both sides of the roller opening and configured to surround an inner portion of the connecting protrusion,
Switchboard shutter.
According to clause 5,
The guide part,
Further comprising a sub-guide roller disposed on at least one of the first wing portion and the second wing portion and in point contact with the shutter guide bar,
Switchboard shutter.
According to clause 10,
The sub guide roller is,
a first sub-guide roller disposed on the first wing; and
Including a second sub-guide roller disposed on the second wing portion,
Switchboard shutter.
A switchboard main body provided with a breaker chamber into which a breaker is inserted, and an open hole formed on the rear side to expose the conductor portion of the bushing assembly to the breaker chamber;
A shutter rotatably coupled to the switchboard body and opening and closing the opening hole as it rotates; and
It includes a circuit breaker that rotates the shutter unit as it enters the switchboard main body,
The shutter is,
A shutter link unit rotatable by a circuit breaker;
A shutter unit that moves upward or downward as the shutter link unit rotates to open the opening hole; and
A guide part coupled to the shutter unit and configured to guide the shutter unit in the process of moving the shutter unit along the shutter guide bar as the shutter link unit rotates,
The guide portion is made to make point contact with the shutter guide bar,
switchboard.

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