KR102042621B1 - Module type motor control center - Google Patents

Abstract

The present invention is to provide a modular MCC that is easy to expand.
Accordingly, in the present invention, a cabinet having a vertical booth bar and a horizontal booth bar installed therein, a first protective cover protecting the front, both sides, and the top and bottom sides of the vertical booth bar, and protecting the rear of the vertical busbar, and a first protective cover of another cabinet. A second protective cover formed to be selectively inserted into the second protective cover, and fixed to one end of the horizontal bus bar in the longitudinal direction, and both sides of the horizontal bus bar of the other cabinet being elastically deformed by contact interference into which the horizontal bus bar of the other cabinet is fitted; It is attached to both sides of the contact terminal and the connection terminal in close contact, and when the horizontal boot bar of the other cabinet is fitted, the connection terminal is elastically open to give elasticity to return to the original to the horizontal boot bar to the horizontal boot bar A modular MCC comprising a spring to be connected is disclosed.

Description

Modular MCC {MODULE TYPE MOTOR CONTROL CENTER}

The present invention relates to a modular MCC that is easy to expand, and more particularly, nirvana work of the cubes and connection work between busbars can be made more easily and quickly, and a live state in which electricity flows in the busbars. In addition, the present invention relates to a modular motor control center that can be easily expanded and prevents an electric shock by the operator coming into contact with the busbar.

The Motor Control Center is applied to various industrial facilities such as plants, factories, buildings, hospitals, and multi-unit housings to open and close the motors and related load devices, and to protect the low voltage electricity supplied from transformers. It plays various control functions and functions such as monitoring and blocking distribution and overcurrent flow to each load.

These motor control centers combine multiple loads with a combination of controllers such as voltage drop and current transformers, switchgear, relays, branch breakers, electronic over current relay (EOCR), fuses, timers, etc. to facilitate maintenance and inspection. The MCC unit is divided into multiple layers in one enclosure (cabinet), and a drawer type structure capable of positioning operations such as pulling in and taking out each unit is mainly used.

For example, Korean Patent No. 10-0917668 discloses a vertical bus assembly including a plurality of first insulators 133 supporting a vertical bus 131 and a pair of left and right vertical frames 135 as shown in FIG. 130, a plurality of second insulators 143 supporting the horizontal bus bar 141 and a fixed frame 145, and a plurality of connection members 147 connecting the vertical bus 131 and the horizontal bus bar 141 to each other. Disclosed is a prefabricated motor control center comprising a horizontal busbar assembly 140.

Such a conventional motor control center is designed to meet the power demand and specifications due to the characteristics that are difficult to standardize and standardize, and can be expanded to the required scale by connecting them in a row or in a row through nirvana work.

However, during the expansion work, the connection parts of the horizontal busbars 141 are bent or holed and fastened in a bolting manner, so the installation takes a lot of time, and once installed, the location is changed or relocated to another motor control center. It is very inconvenient and hard to replace.

In addition, there is a problem that the nibble work is quite cumbersome and difficult because the enclosure must be moved to each building position in order using a transport machine such as a hoist or a crane, and then the height and heat of the installation must be aligned with each other.

Meanwhile, the conventional motor control center enclosure is divided into a busbar compartment, a unit compartment, and a cable duct compartment, and the upper and lower portions of each unit are isolated and shielded by a metal plate so that they do not spread to other units even if an accident occurs. The mainstream is a cross-sectional shape in which one enclosure is used independently, a one-sided shape in which two enclosures are arranged side by side, and a double-sided shape in which two enclosures are arranged symmetrically.

In the case of the double-sided expansion, the rated capacity is expanded in the live state of the vertical boot bar, so the risk of electric shock is very high, and the safety is considerably lowered.

Here, the above-described background or the prior art is merely to help the present inventors understand or understand the technical meaning of the present invention as information obtained in the process of deriving the present invention, and the technology to which the present invention belongs before the application of the present invention. It does not mean that the art is widely known in the art, and the reference numerals in the prior art are not related to the reference numerals in the present invention.

KR 10-1058547 B1 (2011.08.16) KR 10-0993898 B1 (2010.11.05) KR 10-1336969 B1 (2013.11.28) KR 10-1925949 B1 (2018.11.30) KR 10-0540204 B1 (2005.12.23) KR 10-0916804 B1 (2009.09.03) KR 10-0917668 B1 (2009.09.09) KR 10-0896926 B1 (2009.05.01) JP 2005-137086 A (2005.05.26)

Accordingly, the present inventors can easily and quickly perform nirvana work of the enclosures and the connection between the busbars in the idea of solving the technical limitations and problems of the existing motor control center while comprehensively considering the above-mentioned matters. In addition, efforts are being made to develop a modular MCC with a new structure that can be easily expanded even in the live state where electricity is flowing to the busbars during the expansion work, and can prevent the operator from touching the vertical bootbars and causing an electric shock. The invention was devised as a result of the constant study.

Therefore, the technical problem and object to be solved by the present invention is to provide a modular MCC that allows for easy and quick connection between nirvana work and busbars.

In addition, another technical problem and object to be solved by the present invention is to provide a modular MCC that can be safely and easily made expansion work even in the live state.

The technical problems and objects to be solved by the present invention are not limited to the technical problems and objects mentioned above, and other technical problems and objects not mentioned will be clearly understood by those skilled in the art from the following description.

Specific means according to an aspect of the present invention (aspect) to achieve the object as described above and to solve the technical problem, a cabinet in which a plurality of vertical boot bars are built in the rear, a plurality of horizontal boot bars in the upper end, A first protective cover fixed to the rear of the cabinet at regular intervals from the front, both, and the top and bottom of the vertical bus bar to protect the front, both, and the top and bottom of the vertical bus bar, and having a first flange formed at both ends A second flange corresponding to the first flange is fixed to the first protective cover at a fixed distance from the rear side of the vertical bus bar so as to protect the rear side of the vertical bus bar. The upper and lower heights and the left and right widths are narrower than the upper and lower heights and left and right widths of the first protective cover to be selectively inserted into the first protective cover of another cabinet. A second protective cover which is formed to be fixed to one end in the longitudinal direction of the horizontal busbar, and is connected to both sides of the horizontal busbar of another cabinet while being elastically deformed by contact interference into which the horizontal busbar of another cabinet is fitted; It is attached to both sides of the connecting terminal, and when the horizontal boot bar of the other cabinet is inserted into the spring to connect the horizontal boot bar of the other cabinet to the horizontal boot bar by giving elasticity to return to the original while the connection terminal elastically opened It proposes a modular MCC, characterized in that the adoption.

Thus, the present invention can make the nibble work of the cubes and the connection work between the busbars more easily and quickly, and also easy to expand for the expansion work even in the live state, while the operator is in contact with the vertical booth bar electric shock The prevention effect can be aimed at.

A preferred aspect of the present invention is selectively fixed to guide holes and guide holes of the cabinet, respectively formed on both side and rear upper and lower frames of the cabinet, and to the side and rear of the cabinet and the sides and rear of the other cabinet. By further comprising a guide pin to be inserted into the guide hole of the other cabinet in order to match the relative position of the nirvana work of the cabinets and the connection between the busbar can be made more simply and quickly.

A preferred aspect of the present invention further comprises a plurality of guides for guiding the side of the other cabinet side by side to the side of the cabinet or the rear of the other cabinet to be symmetrically easily and accurately connected to the rear of the cabinet. It is possible to improve the convenience of the work between the nirvana work and the busbar.

According to a preferred aspect of the present invention, the guide device may include a fixing bracket detachably attached to the lower frame of the cabinet and formed on one side of the fixing bracket, while minimizing contact interference and friction with the lower frame of the other cabinet. A plurality of guide rollers for guiding the slip are freely rotatable roller brackets, which are formed in an obliquely inclined shape by bending outward from the ends of the roller brackets, and are equipped with guide rollers and flow when entering other cabinets. The inclined bracket to reduce the shape, is formed in an oblique inclined shape further bent outward from the end of the inclined bracket and comprises a tip guide for inducing another cabinet to enter the correct direction of the end of the inclined bracket by moving the cabinet While guiding Accurate connections can be derived to improve the convenience, accuracy and speed of nibble work.

In a preferred aspect of the present invention, the fixing bracket and the roller bracket are formed to be perpendicular to each other, so that the plurality of cabinets are arranged side by side, and then the other cabinets are symmetrically arranged in one of the reference cabinets. The fixing brackets can then be attached to the bottom frame at the back of another cabinet, which is placed side by side with the reference cabinet.

In a preferred aspect of the present invention, on the side of the fixing bracket which faces the lower frame of the cabinet, the guide roller protrudes thickly by the length protruding from the roller bracket toward the lower frame of the cabinet. Since the interval adjusting plate is attached to each other, the distance between the two guide rollers facing each other is wider than or equal to the front and rear length of the lower frame of the cabinet, so that the guide can be smoothly maintained while maintaining the balance when the cabinet is moved.

An aspect of the present invention, which has a means and a configuration for achieving the above object and technical problem, is a connection mounted at the end of the horizontal busbar when working with several cabinets side by side The connection between the horizontal busbars can be made more convenient and quicker because the terminals are automatically connected by squeezing the horizontal bootbars of other cabinets by contact interference with the horizontal bootbars of other cabinets.

In addition, the second protective cover is inserted into the first protective cover of the other cabinet when the two cabinets are symmetrically arranged for expansion in the live state where electricity flows in the vertical booth bar, and at the same time, the guide hole and the guide pin It is easy to expand because it guides to completely match, and the vertical boot bar is not exposed as it is, and it is safely blocked by the second protective cover to maximize safety and reliability. Can be.

In addition, the guides attached to the lower frame of the cabinet during the nirvana and connecting work between the cabinets guides the cabinet to move easily and induces an accurate connection, thereby improving the convenience, accuracy and speed of the nibbing and connecting work.

Here, the effects of the present invention are not limited to the above-mentioned effects, and other effects that are not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view illustrating main parts of a motor control center according to the related art.
Figure 2 is a perspective view showing with a modular MCC according to an embodiment of the present invention.
3 is an exploded perspective view showing a modular MCC according to an embodiment of the present invention.
4 is a perspective view illustrating main parts of the modular MCC according to an embodiment of the present invention symmetrically on both sides.
5 is a plan sectional view showing a local part of FIG.
6 is a perspective view illustrating main parts of the modular MCC in parallel with each other according to an embodiment of the present invention.
7 is an enlarged perspective view of a local part of FIG. 6.
8 is a plan sectional view of FIG.
9 is a perspective view showing a guide device of the modular MCC component according to an embodiment of the present invention.
10 is a rear perspective view showing a guide device among the modular MCC components according to an embodiment of the present invention.
11 is a plan view illustrating another embodiment of a guide device among the modular MCC components according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, terms to be described below are defined in consideration of functions in the present invention, which clearly indicates that the concept is to be interpreted in a concept consistent with the technical spirit of the present invention and commonly used or commonly recognized in the art.

In addition, when it is determined that the detailed description of known functions or configurations related to the present invention may obscure the gist of the present invention, the detailed description thereof will be omitted.

The accompanying drawings show an explanation of the structure and operation of the technology, exaggerated or simplified parts for convenience and clarity of understanding, and it is noted that each component does not exactly match the actual size and shape.

In addition, as used herein, the term and / or means a combination of a plurality of related items or any item of a plurality of related items, and when a part includes any component, this is a particularly opposite description. Unless otherwise indicated, it does not exclude other components, which means that other components may be further included.

In other words, it means that there is a feature, number, steps, actions, components, parts or a combination thereof described in the present specification, one or more other features or numbers, step action components, parts or a combination thereof It should be understood that they do not exclude the presence or the possibility of adding them.

In addition, the terms "unit" and "unit" mean a module form that functions as a unit or a role that processes at least one function or any certain operation desired in a system, and is a combination of hardware or software or a combination of hardware and software. It can be implemented as a device or an assembly capable of performing independent operations or the like through means.

In addition, terms such as top, bottom, top, bottom, or top, bottom, top, bottom, front and rear, left and right are used for convenience in order to distinguish the relative positions in each component. For example, the upper part of the drawing may be named or referred to as the upper part and the lower part as the lower part, and the longitudinal direction may be named or referred to as the front-rear direction, and the width direction may be referred to as the left or right direction.

In addition, terms such as first and second may be used to describe various components. That is, terms such as first and second may be used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as the second component without departing from the protection scope of the present invention, and the second component may also be referred to as the first component.

As shown in Figures 2 to 11, the modular MCC according to the embodiment of the present invention is largely the cabinet 10, the first protective cover 20, the second protective cover 30, the connection terminal 40, the spring It consists of 50 and the guide apparatus 60. As shown in FIG.

The cabinet 10 is composed of a plurality of frames 13, a panel and a panel assembled in the form of a box, the rear of the bus bar vertical boot bar on each of the R, S, T, N phase that receives the primary power from the outside (11) is built-in, and the upper end portion has a built-in horizontal bus bar 12 for branching corresponding to each vertical boot bar (11).

In addition, the front of the cabinet 10 is divided into a multi-stored storage space for mounting a plurality of MCC units in the drawer type.

That is, the cabinet 10 is divided into a compartment for accommodating the vertical boot bar 11, a compartment for accommodating the horizontal boot bar 12, a compartment for accommodating the unit, and a compartment for accommodating the cable and serving as a duct.

In this case, the vertical bus bar 11 and the horizontal bus bar 12 may be wired and supported by a general insulation insulator, and may be one in which a thermal radiation coating is coated on an aluminum or copper material surface.

In addition, the compartment that houses the unit and the compartment that houses the cable and acts as a duct, each of the front has a hinged door opening and closing the interior.

As shown in FIGS. 2 to 4, a plurality of guide holes 14 are formed in the frame 13 positioned at both side surfaces of the cabinet 10 and the rear upper and lower ends thereof, and among these guide holes 14, Guide pins 15 which guide to be inserted into the guide holes 14 'of the other cabinets are selectively fixed in order to match the relative positions of the side and rear sides of the cabinet 10 and the other cabinets 10'. .

In addition, on the frame 13 of the frame 13 of the cabinet 10 that is in contact with the bottom surface, etc., the screw hole 16 is fastened so that the guide device 60 can be tightened by attaching or releasing by detaching. Formed.

As shown in FIGS. 3 and 5, the first protective cover 20 is formed in a rectangular box shape to protect the front, both sides, and the upper and lower sides of the vertical boot bar 11, and the second protective cover 20 is formed on both left and right ends thereof. The first flange 21 is formed to connect and secure the protective cover 30.

That is, the first protective cover 20 prevents the vertical boot bar 11 from being entirely exposed toward the inside of the cabinet 10, and vertical booths through which a high current flows to the operator during maintenance, inspection, and replacement of parts. It is fixed to the rear of the cabinet 10 at regular intervals with the front, both sides, and the top and bottom of the vertical bus bar 11 in order to contact the bar (11) or to reduce the psychological anxiety caused thereby.

In addition, the first protective cover 20 is fixed to the first protective cover 20 'of the other cabinet 10' symmetrically disposed, that is, the first protruding from the rear surface of the other cabinet 10 ' 2 is mounted in a recessed form toward the front from the rear surface of the cabinet 10 so as to overlap the protective cover 30 overlapping.

As shown in FIGS. 4 and 5, the second protective cover 30 is formed in a rectangular box shape to protect the rear side of the vertical boot bar 11, and the first protective cover 20 is formed at both left and right ends thereof. The second flange 31 corresponding to the first flange 21 is formed to be fixed to the first flange 21.

That is, the second protective cover 30 is detachably fixed to the first protective cover 20 at regular intervals from the rear of the vertical boot bar 11.

In addition, the second protective cover 30 has upper and lower heights and left and right widths higher than the upper and lower heights and the left and right widths of the first protective cover 20 to be selectively inserted into the first protective cover 20 'of the other cabinet 10'. It is narrowly formed.

In addition, when the second protective cover 30 is not inserted into the first protective cover 20 'of the other cabinet 10' to prevent the vertical boot bar 11 from being exposed to the rear of the cabinet 10. The opening and closing plate 32 is provided detachably.

That is, the opening and closing plate 32 is the vertical boot bar 11 when the second protective cover 30 is inserted into the first protective cover 20 'of another cabinet 10' in the active state of the vertical boot bar 11. Detachable to be detached so that a portion of the exposure, and when not inserted, the second protective cover 30 can be used to attach so as to completely close the vertical boot bar (11).

In this case, the first protective cover 20 and the second protective cover 30 may be coupled to each other by a bolting method to each of the first flange 21 and the second flange 31 so as to be removable. The second protective cover 30 and the opening and closing plate 32 may be coupled in a bolting manner so as to be detachable.

In addition, the first protective cover 20 and the second protective cover 30 may be formed by molding an electrical insulator such as a metal plate or a plastic material by bending work.

6 to 8, one side of the horizontal bus bar 12 ′ is elastically deformed by contact interference into which the horizontal bus bar 12 ′ is fitted and closely connected to both sides thereof. It is fixed at the end.

That is, the connecting terminal 40 is gradually wider toward the outer end portion so as to easily and stably connect the horizontal booth bars 12 'of the other cabinets 10' to the horizontal booth bars 12. It is formed.

Herein, the connection terminal 40 is preferably formed of the same copper (Cu) material as the horizontal bus bar 12.

The spring 50 has both sides of the connection terminal 40 in order to give elasticity to return to the original state when the connection terminal 40 is elastically opened when the horizontal bus bar 12 'is inserted into the gap of the connection terminal 40. It is attached to the side.

That is, when the horizontal boot bar 12 'of the other cabinet is inserted into the gap between the connection terminal 40, the connection terminal 40 naturally opens to both sides, and at this time, the spring 50 is compressed and the elastic restoring force is generated, thereby causing the horizontal Maintain tight contact with both sides of the busbar 12 '.

Here, the spring 50 is preferably formed of a spring steel sheet having a high elastic limit and a high fatigue strength so as to stably contact the connecting terminal 40 to the horizontal bus bar 12 '.

The guide device 60 connects the sides of the other cabinet 10 'side by side to the side of the cabinet 10, and the rear of the other cabinet 10' is symmetrically easily and accurately connected to the rear of the cabinet 10. It is provided with a plurality of pieces to guide.

Here, the guide device 60 is a fixed bracket 61, roller bracket 62, guide roller 63, inclined bracket 64, tip guide 65, the spacing control plate (as shown in Figure 9 to 11) 66).

The fixing bracket 61 is formed to be detachably attached to the lower frame 13 of the cabinet.

That is, the fixing bracket 61 has a plurality of through-holes 67 communicating with the screw holes 16 formed in the lower frame 13 of the cabinet for bolting engagement with the lower frame 13 of the cabinet at regular intervals. .

The roller bracket 62 is integrally formed on one side of the fixed bracket 61 in order to stably support the plurality of guide rollers 63 rolling.

The guide roller 63 includes a plurality of guide roller rollers in order to induce smooth sliding while minimizing the kinetic friction caused by the contact when the lower frame 13 'of the other cabinet slides along the opposite surface of the guide device 60. 62 are mounted at regular intervals so as to be free to rotate.

The inclined bracket 64 is formed to be inclined obliquely outward from the end of the roller bracket 62 in order to reduce the flow when entering the other cabinet 10 '.

That is, the inclined bracket 64 is formed such that the distance between the two inclined bracket 64 facing each other when the guide device 60 is arranged in a pair of front and rear or left and right gradually toward the outside.

At least one guide roller 63 is mounted to the inclined bracket 64 along its longitudinal direction.

Here, the fixing bracket 61 and the inclined bracket 64 may be integrally formed to form a straight line with each other, or may be formed at right angles to form a perpendicular to each other.

That is, as shown in Figures 9 and 10, the fixing bracket 61 and the inclined bracket 64 is provided with a plurality of guide devices 60 of the form of a straight line with each other, as shown in Figure 11 fixed bracket At least one guide device 60-1 may be provided at a right angle so that the 61 and the inclined bracket 64 are perpendicular to each other.

Particularly, as shown in FIG. 11, the guide device 60-1 in which the fixing bracket 61 and the inclined bracket 64 are vertically bent with each other carries a plurality of cabinets 10 and 10 ′ in line with each other. Later, when the other cabinet 10 'is symmetrically arranged in one of the reference cabinets 10, the fixed bracket 61 is arranged in parallel with the other reference cabinet 10 and the other cabinet 10'. It can be attached and detached to the rear lower frame 13 ', which allows the portion of the inclined bracket 64 perpendicular to the fixing bracket 61 to guide the movement of another cabinet 10'. Can be placed facing the

The tip guide 65 is further inclined obliquely outward from the end of the inclined bracket 64 to induce the lower frame 13 'of the other cabinet 10' to enter the correct direction of the end of the inclined bracket 64. It is formed in a true shape.

That is, the tip guide 65 is arranged in a pair of front and rear or left and right in order to serve as an entrance for adjusting the other cabinet 10 'to move in a balanced manner without biasing to either side. The distance between the two tip guides 65 facing each other is formed farther toward the outside.

The gap adjusting plate 66 has a guide roller 63 mounted on the roller bracket 62 at the side of the fixing bracket 61 facing the lower frame 13 of the cabinet, and at the bottom of the cabinet at the roller bracket 62. It is attached to the side facing the lower frame 13 of the cabinet of the side of the fixing bracket 61 in order to adjust so as to protrude thickly by the length protruding toward the frame 13.

That is, when the fixing bracket 61 and the roller bracket 62 are formed to be in a straight line with each other, the movement of the rolling is performed while the edge portion of the guide roller 63 protrudes slightly outward. If 61) is fixed to both sides of the lower frame 13 of the cabinet, the distance between the guide rollers 63 facing each other becomes narrower than the front and rear lengths of the lower frame 13 of the cabinet, so that smooth guide action and balance cannot be maintained. To solve this problem, a gap adjusting plate 66 having a thickness corresponding to the length of the guide roller 63 protruding from the fixing bracket 61 is attached.

In addition, the roller bracket 62 and the inclined bracket 64 are formed like a cross-sectional shape of a groove channel having a cross-section like a 'c' shape, and a portion of the edge of the guide roller 63 is formed on the web. Slot 68 is formed to expose the.

In addition, the roller bracket 62 and the inclined bracket 64 are provided with retainers 69 which prevent the respective guide rollers 63 from being separated.

Referring to the main operations and principles of the modular MCC according to the embodiment of the present invention configured as described above are as follows.

First, as shown in FIGS. 2 and 6, the plurality of cabinets 10, 10 ′ are horizontally connected to each other by a guide of the guide holes 14 and the guide pins 15 when they are opened in parallel. The horizontal bus bar 12 'of another cabinet is naturally pressed into the connection terminal 40 mounted at the end of the bus bar 12, so that the connection between the horizontal bus bars 12 and 12' can be easily and quickly made. Can be.

As shown in FIGS. 4 and 5, the two cabinets 10 and 10 'are symmetrically connected at the front and rear of the vertical bus bar 11 so that the guide holes 14 and guide pins 15 The first protective cover 20 'is naturally inserted into the first protective cover 20' according to the guide of the first protective cover 20 'of the other cabinet. 11) It can be expanded easily and stably even in the live state in which electricity flows.

Not only that, since the vertical boot bar 11 is not exposed as it is, and is safely blocked by the second protective cover 30, an accident in which the worker touches the vertical boot bar 11 due to carelessness or the like, prevents an electric shock. Back safety can be improved.

In addition, by attaching the guide device 60 symmetrically to each of the front and rear lower frames 13 of the cabinet 10, it guides the movement of the other cabinet 10 'easily and guides the correct connection efficiently. The convenience of work can be improved.

That is, the guide device 60 is symmetrically attached to the lower and rear frames 13 of the front and rear of the cabinet 10 in the case of working with the cabinets 10, 10 'in a row side by side, respectively, the other cabinet 10 ') To facilitate the movement and to efficiently guide the correct connection, thereby reducing the time required for nirvana and can greatly improve the convenience of work.

In addition, when the two cabinets (10, 10 ') to symmetrically nibble attached to the lower left and right frame 13 of the cabinet 10, respectively, or the fixed bracket 61 and the inclined bracket (64) By attaching a part of the fixing bracket 61 of the guide device 60-1, which is bent perpendicularly to each other, to the lower frame 13 ′ behind the other cabinet 10 ′ arranged side by side with one reference cabinet 10. It is possible to guide the movement of the other cabinet 10 'symmetrically arranged behind the cabinet 10 to facilitate movement and to guide the correct connection efficiently to improve the convenience of the work of nirvana.

On the other hand, the present invention is not limited by the above-described embodiments and the accompanying drawings, and various modifications and applications that are not illustrated within the scope not departing from the technical spirit of the present invention, as well as of each component It is apparent to those skilled in the art that the present invention may be widely applied by changing to other embodiments equivalent to substitution.

Therefore, the contents related to the modification and application of the technical features of the present invention should be interpreted as being included in the technical spirit and scope of the present invention.

10: Cabinet 11: Vertical Booth Bar
12: Horizontal Booth Bar 13: Frame
14: guide hole 15: guide pin
16: screw hole 20: first protective cover
21: first flange 30: second protective cover
31: second flange 32: opening and closing plate
40: connection terminal 50: spring
60: guide device 61: fixed bracket
62: roller bracket 63: guide roller
64: inclined bracket 65: tip guide
66: Spacer 67: Through Hole

Claims (6)

A cabinet having a plurality of vertical boot bars at the rear and a plurality of horizontal boot bars at the upper end thereof;
A first protection having a first flange formed at both ends and fixed to the rear of the cabinet at regular intervals from the front, both, and the top and bottom of the vertical bus bar to protect the front, both, and the top and bottom of the vertical bus bar; cover;
Removably fixed to the first protective cover at regular intervals with the rear of the vertical busbar to protect the rear of the vertical busbar, the second flange corresponding to the first flange is formed at both ends, the other A second protective cover having a vertical height and a horizontal width narrower than the vertical height and horizontal width of the first protective cover to be selectively inserted into the first protective cover of the cabinet;
A connection terminal fixed to one end in the longitudinal direction of the horizontal busbar and elastically deformed by contact interference into which the horizontal busbar of the other cabinet is fitted and closely contacted with both sides of the horizontal busbar of the other cabinet;
A spring attached to both sides of the connection terminal, the spring connecting the horizontal boot bars of the other cabinets to the horizontal boot bars by giving elasticity to return to the original while the connection terminals are elastically opened when the horizontal boot bars of the other cabinets are fitted;
Guide holes respectively formed on both side surfaces of the cabinet and rear upper and lower frames; And
A guide pin selectively fixed to the guide hole of the cabinet and guided to be inserted into the guide hole of another cabinet to match the relative positions of the side and rear sides of the cabinet and other cabinets;
Modular MCC comprising a.
delete The method of claim 1,
Modular MCC further comprises a plurality of guides to the side of the cabinet side by side of the other cabinet side-by-side connection or to guide the rear of the other cabinet symmetrically easily and accurately connected to the side of the cabinet.
The method of claim 3,
The guide device,
A fixing bracket detachably attached to the lower frame of the cabinet;
Roller brackets formed on one side of the fixed bracket, the plurality of guide rollers for inducing the sliding while minimizing contact interference and friction with the lower frame of the other cabinet freely rotatable at regular intervals;
Including;
In order to reduce the flow when entering another cabinet is formed an inclined bracket of obliquely inclined shape from the end of the roller bracket, at least one guide roller of the guide roller is mounted on the inclined bracket,
A modular MCC having a tip guide inclined obliquely further outward from the end of the inclined bracket to guide another cabinet to enter the correct direction of the end of the inclined bracket.
The method of claim 4, wherein
The fixed bracket and the roller bracket is a modular MCC formed to be perpendicular to each other.
The method of claim 4, wherein
Modular MCC is attached to the side of the fixing bracket on the side facing the lower frame of the cabinet, the guide roller is protruding thickly by the length protruding from the roller bracket toward the lower frame of the cabinet.

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