KR100816102B1 - Double detachable adapter for low-voltage distributing board - Google Patents

Abstract

A double detachable adapter for a low-voltage distribution board is provided to simply and rapidly perform installation and replacement of a circuit breaker and the adapter by detachably coupling the circuit breaker with an adapter case, and the adapter case with a branch busbar. An adapter case(91) is mounted in a branch busbar(50) inside a cabinet. An adapter fixing unit(97) is installed in the adapter case to be detachably coupled with the branch busbar. A first connection bar is installed in the adapter case to be electrically connected to the adapter fixing unit. A circuit breaker(5) is detachably coupled with the adapter case. A second bus bar is installed in the circuit breaker to be electrically connected to the first connection bar. A fixing unit fixes a connection part between the first and second connection bars.

Description

Double detachable adapter for low-voltage distributing board

The present invention relates to an overcurrent blocking adapter installed in a branch busbar of a low voltage switchgear, and more particularly, a double detachable type for a low voltage switchgear for enabling a quick and easy installation and replacement of a circuit breaker and an adapter for distribution. It is about an adapter.

In general, a building, a factory, or an apartment is provided with a water distribution apparatus that receives electricity supplied by a power company and distributes the power to a load of each customer. The water distribution unit is supplied with electricity of high pressure or extra high pressure to reduce the pressure according to the purpose and to send it to each load of the customer.The cabinet has a predetermined size designed in consideration of safety against electric shock and fire, and the switchgear inside the cabinet. It is equipped with various circuit breaker and protection equipment such as transformer, parking breaker, condenser, wiring breaker, power fuse, fatigue circuit, and various relay equipment such as current transformer, power meter, video current transformer, ammeter, voltmeter. Such a water distribution device is an extra high voltage switchgear (LBS panel), a transformer transformer current transformer (MOF panel), a transformer transformer base (PT panel), a special high interruption block (VCB panel) for receiving high or extra high voltage. It consists of a high-voltage board composed of transformers, a transformer board equipped with a transformer, and a low-voltage switchboard composed of a low voltage blocking base and a power distribution board (power board).

The present invention relates to such a low-voltage switchgear, such low-voltage switchgear is to distribute the low-voltage electricity supplied from the transformer to each load through a series of devices, to prevent the over-current flows, various types such as breakers, protective relays, etc. A unit device, a structure for attaching and supporting these unit devices, and a conductor (Busbar, Cable) for connecting and connecting the unit devices.

Low-voltage switchboards, on the other hand, are individually designed to suit the size and power consumption of the building. Therefore, low pressure switchboards are difficult to provide standardized products. Accordingly, in the conventional low voltage switchgear, the switchgear is designed to meet the electric power demand, and the main bus bar and the branch bus bar are contacted according to the design, and then the bus bar is cut, bent or holed and assembled. This not only complicates the manufacturing process, but also requires excessive time and money, and requires skilled professionals.

For example, Figure 1 is a schematic block diagram showing an example of a low-voltage switchboard according to the prior art. As shown, the conventional low voltage switchboard 10 includes a main circuit breaker 12 installed inside a predetermined cabinet, a plurality of circuit breakers 14 electrically connected to the main circuit breaker 12, and a predetermined circuit breaker. It consists of a busbar system 16.

Here, the main circuit breaker 12 is to open and close the power supplied from the transformer and to automatically cut off when an abnormality such as an overload, disconnection, etc., the circuit breaker 14 is electrically connected to the main circuit breaker 12 In the state, it serves to send the power delivered from the main breaker 12 to the load. The busbar system 16 electrically connects the main circuit breaker 12 and the power distribution circuit breaker 14 to the main busbar 13 and the plurality of boats connected to the main circuit breaker 12. It consists of many branch bus bars 15 to which the exclusive circuit breaker 14 is connected.

Referring to FIG. 1, in the low voltage switchgear 10 according to the related art, the main bus bar 13 is vertically installed at the output terminal 122 of the main breaker 12. A plurality of branch busbars 15 are installed in the horizontal direction so as to be orthogonal to the main busbars 13. Distribution breakers 14 are respectively provided at the ends of the branch busbars 15, and loads are connected to the output terminals 142 of the circuit breakers 14. On the other hand, the main bus bar 17, 11 for receiving power from the transformer is connected to the input terminal 121 of the main circuit breaker 12.

As described above, in the low-voltage switchboard 10 according to the related art, a plurality of branch busbars 15 installed in a horizontal direction are perpendicular to the main busbar 13 installed vertically, and both ends of the branch busbars 15 are perpendicular to each other. The circuit breaker 14 is installed in the structure. Therefore, as shown in FIG. 2, in order to intersect the orthogonal main busbar 13 and the branch busbar 15 and to selectively connect at predetermined intersections, a fastening hole 18 is provided at each intersection. And bends 19 should be formed at the contacts of the branch busbars 15. However, since the position of the intersection point of the main busbar 13 and the branch busbar 15 depends on the design of the switchboard, the busbar cannot be bent or holed in advance. There was a problem to be done.

In addition, since the breaker 14 for power distribution is installed at both ends of the branch busbar 15 in the conventional low voltage switchgear 10, first, the circuit breaker 14 for each power distribution is fixed to the cabinet, and each branch bent and holed. Both ends of the busbar 15 should be screwed into the input end 141 of the circuit breaker 14 for the power distribution.

Accordingly, the conventional low-voltage switchboard 10 has a problem that it is difficult to install and replace, because it takes a lot of time to bend and hole processing of the busbar when assembling, and fixed the circuit breaker to the cabinet and screwed together.

In addition, in the related art, there has been an adapter method in which the distribution circuit breaker 14 is fixed to the branch busbar 15 by a predetermined intermediate structure, but in the case of such an adapter system, the installation or replacement work of the distribution circuit breaker 14 is performed. In order to significantly reduce workability, the output terminal of the circuit breaker 14 has to go through a cumbersome work to be fastened or detached through several wire cables, screws, and bolts to the adapter connected to the branch busbar 15. There was a problem.

The present invention has been made to solve the above problems according to the prior art, an object of the present invention is configured to easily detach the breaker for the distribution to the adapter case constituting the adapter and adapter case in the branch busbar of the low-voltage switchboard The present invention provides a dual detachable adapter for a low voltage switchgear that can be easily and quickly installed and replaced by a circuit breaker and an adapter.

In order to achieve the above object of the present invention, a dual detachable adapter for a low voltage switchgear includes: an adapter case mounted on a branch busbar inside a cabinet; An adapter fixing bracket installed in the adapter case and detachably coupled to the branch busbar and electrically connected to the branch busbar; A first connection bar installed in the adapter case and electrically connected to the adapter fixing bracket; A distribution circuit breaker detachably coupled to the adapter case; A second connection bar installed in the distribution breaker and electrically connected to the first connection bar; It characterized in that it comprises a fixing device for fixing the connecting portion of the first connecting bar and the second connecting bar.

Here, the fixing device, a fixing frame which is inserted and fixed between the adapter case and the first connection bar; A pressing piece for pressing the upper portion of the second connection bar in the fixing frame to closely contact the first contacting bar; Screwed to the fixing frame, the pressing piece is rotatably coupled to the end, it may be configured to include a screw shaft for pressing and pressing the pressing piece in close contact with the first connecting bar in close contact.

In addition, the adapter case of the present invention is further provided with an insulating case surrounding the first and second connection bar and the fixing device, the insertion case may be formed with an insertion hole into which the tool for rotating the screw shaft can be inserted.

In addition, the present invention is coupled to the breaker for the power distribution and sliding plate sliding detachable to the adapter case; The sliding plate may be configured to further include a coupling member for coupling to the circuit breaker, the end of the sliding plate may be a coupling piece elastically coupled to the coupling groove of the adapter case.

In addition, the present invention may further comprise a departure prevention plate installed to prevent the departure of the sliding plate seated on the adapter case.

In addition, the present invention may further comprise a sliding block slidably installed on the sliding plate and coupled to the circuit breaker through the coupling member.

As described above, the dual detachable adapter for the low-voltage switchboard according to the present invention is configured to easily detach the adapter case constituting the adapter and the circuit breaker for distribution, and to easily detach the adapter case to the branch busbar inside the switchboard. By adopting the double detachable structure, it is possible to reduce the inconvenience of working by separating or combining several wire cables and screw bolts as before when detaching the circuit breaker of the power distribution unit, thereby improving the convenience of work and the circuit breaker for distribution As well as the assembly and disassembly work of the adapter case is very easy, and the assembly time is greatly reduced, there is an effect to make a quick operation.

In addition, the dual detachable adapter of the present invention is easy to install or replace the circuit breaker for distribution simply because it can be easily connected to the distribution circuit breaker electrically and mechanically simply by hanging the adapter case orthogonal to the branch busbar installed horizontally or vertically. There is a repelling effect.

In addition, since the double detachable adapter according to the present invention is directly installed on the branch busbars installed in parallel in the horizontal or vertical direction, complicated processes such as screwing are omitted, thereby greatly shortening the assembly time and easily assembling even a non-skilled person. Since the space can be used efficiently, the compact switchboard can be provided.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a double removable adapter for a low-voltage switchboard according to the present invention.

First, FIG. 3 is a front view schematically showing an example of a modular assembled low voltage switchgear to which a double detachable adapter according to the present invention is applied, and FIG. 4 is a perspective view illustrating a modular assembled low voltage switchgear according to the present invention. 6 is a side view.

3 to 6, the modular low voltage switchgear 1 of the present invention is the main breaker (3) and the circuit breaker (5) for the low-voltage electricity supplied from the transformer through the busbar system (6) It supplies power to each load via the power supply and also protects the load by automatically shutting off the power when an abnormality such as overload or disconnection occurs.

Here, the main circuit breaker 3 according to the present invention receives power transmitted from a transformer, and then opens and closes it through a plurality of opening and closing contacts.

In this case, the main breaker 3 is preferably an ACB (Air Circuit Breaker). The ACB is a circuit breaker that eliminates spark aerodynamics from the switch when turning the electricity on and off. In addition, the ACB can be turned on or off by moving the handle in an emergency, but it is based on remote operation and has a shut-off function in case of abnormality such as overcurrent or undervoltage undervoltage.

In addition, the distribution circuit breaker 5 according to the present invention serves to selectively transmit electric power transmitted to each load while being electrically connected to the main circuit breaker 3.

At this time, the distribution breaker 5 is preferably a MCCB (Molded Case Circuit Breaker). The input terminal of the MCCB is directly connected to the branch busbar, and the output terminal is connected to each load.

The MCCB is an assembly of a switchgear, a trip device, and the like into an insulated container, and can open and close a converter in an energized state by manual or electrical operation. Such MCCBs are widely used because they are compact, safe to operate, and have no trouble such as fitting a fuse.

In addition, when one of the loads is short-circuited or overload occurs, the MCCB trips the MCCB so that power applied from the main is automatically cut off. Since the structure and function of the main circuit breaker 3 and the distribution circuit breaker 5 is the same or similar to the conventional one, a detailed description thereof will be omitted.

Therefore, hereinafter, the modular assembled low-voltage switchboard 1 according to the present invention will be described in detail with the busbar system 6 as the center.

As shown in the figure, the busbar system 6 according to the present invention comprises a first main busbar device 7 which connects the output side of the transformer and the input end of the main breaker 3 and the main breaker 3. The second main busbar device 8 for connecting the output terminal and the plurality of branch busbars, and the branch busbar device 9 for electrically connecting the second main busbar device 8 and the plurality of distribution circuit breakers 5. It is composed of

First, the first main busbar device 7 and the second main busbar device 8 may electrically and mechanically connect the rectangular busbar 20 and the plate busbar 30 and the rectangular bus bar and the plate busbar. It consists of a plurality of busbar connectors 40.

The branch busbar device 9 includes a plurality of branch busbars 50 including a hook busbar 60, a hook busbar 60 and a plate busbar of the branch busbar 50. 30 is a combination of a busbar connecting member 70 for electrically and mechanically connecting the plurality of circuit breakers 5 and a double detachable adapter 90 for electrically and mechanically connecting the plurality of circuit breakers 5 to the branch busbars 50. Is done.

Meanwhile, the first main busbar device 7 according to the present invention, as shown in FIGS. 3 to 5, has a first rectangular busbar 20-1 installed in parallel in the horizontal direction on the upper part of the first cabinet 2. ), A first plate busbar 30-1 installed in the vertical direction at the input end of the main circuit breaker 3, the first box bus bar 20-1 and the first plate bus bar 30-1. ) Is made up of a first busbar connector 40-1 that electrically connects the same.

In addition, the second main busbar device 8 is parallel to the second plate-shaped busbar 30-2, which is vertically connected to the output end of the main breaker 3, and the lower side of the first cabinet 2 in a horizontal direction. Second busbar connector 40-2 for electrically connecting the installed second rectangular busbar 20-2, the second plate busbar 30-2, and the second rectangular busbar 20-2. ), A third rectangular busbar 20-3 installed in the lower direction of the second cabinet 4 in the horizontal direction, and a third plate busbar 30 disposed in parallel to the vertical direction in the second cabinet 4. -3) and a third busbar connector 40-3 which electrically connects the third rectangular busbar 20-3 and the third plate busbar 30-3.

In this case, the second rectangular busbar 20-2 and the third rectangular busbar 20-3 are electrically connected to each other through an elastic member that is stretched and contracted according to temperature. Therefore, the second main busbar device 8 according to the present invention has a U-shape as a whole through the first cabinet 2 and the second cabinet 4, as shown in the front view of FIG. 4.

3, 4 and 6, the branch busbar device 9 includes a plurality of hook-type busbars 60 installed parallel to the inside of the second cabinet 4 in the horizontal direction. A branch bus bar 50 including the hook-shaped bus bar 60 and a third plate bus bar 30-3 installed vertically in the second cabinet 4 of the branch bus bar 50. A plurality of bus bar connecting members 70 for connecting mechanically and the hook-shaped bus bar 60 of the branch bus bar 50 in the orthogonal direction to electrically and mechanically connect the circuit breaker 5 for distribution. It consists of a dual removable adapter 90.

Next, the branch busbar apparatus 9 provided in the said 2nd cabinet 4 is demonstrated.

First, the branch busbar device 9 distributes the electric power transmitted through the first and second main busbar devices 7 and 8 and facilitates installation of a plurality of circuit breakers 5. do.

The branch busbar device 9 includes a plurality of branch busbars 50 installed in the second cabinet 4 in parallel in the horizontal direction.

As illustrated in FIG. 7, the branch busbars 50 include a plurality of hook-type busbars 60 and a plurality of hook-type busbars 60 installed in parallel in the horizontal direction with a predetermined interval spaced up and down. At least one end support member 51 for supporting the, and the insulating cover 55 surrounding the hook-shaped busbar 60 and the end support member 51.

The hook-type busbar 60 is formed by extruding a conductive metal and having a shape in which 'T' and 'L' are combined. That is, the hook-type busbar 60 has a vertical portion 61 of a predetermined height, a hook portion 62 bent at right angles from one end of the vertical portion 61, and the vertical portion 61. It is formed integrally with the lower end of the horizontal portion 63 is protruded to be perpendicular to both sides. As such, one branch busbar 50 includes three or four hook-type busbars 60 installed in the horizontal direction at predetermined intervals.

The end support member 51 is a rectangular injection molded product made of an insulating plastic, and a plurality of horizontal parts 63 and vertical parts 61 of the hook-type busbar 60 may be inserted laterally. T-shaped insertion groove 52 is formed spaced apart.

In addition, the end support member 51 is provided with a predetermined fastening hole 151 and a locking step 152 for fixing the end support member 51 up and down. Therefore, when the hook-shaped busbar 60 is inserted and fixed in the insertion through groove 52 of the end support member 51, the hook portion 62 of the hook-shaped busbar 60 is exposed to the outside.

In addition, the insulating cover 55 is an insulating plastic injection molding, and forms a 'c' shape so as to surround the lower ends of the plurality of end supporting members 51 and the hook-type busbar 60. In addition, on both sides of the bottom plate 58, two inner and outer plates 53 and 54 are integrally formed at predetermined intervals in the longitudinal direction.

In this case, a coupling protrusion 251 is formed at the upper end of the inner plate 53 to engage with the locking step 152 formed on the end support member 51, and the outer side plate 54 has a vertical side plate of the upper cover 57. The engaging projection to which the engaging projection 253 formed at the lower end of the 153 is formed.

The vertical side plate 153 has a predetermined length so as to be sandwiched between the inner side plate 53 and the outer side plate 54 of the insulating cover 55.

On the other hand, the bottom surface of the top plate 154 of the upper cover 57 is formed with a plurality of spacer members 155 in the longitudinal direction.

The spacer member 155 is composed of two elastic stone pieces 156 that are bent symmetrically outward. The elastic stone pieces 156 are installed in parallel at predetermined intervals so as to be in contact with the hook portion 62 of the hook-type busbar 60.

Subsequently, the bus bar connecting member 70 is installed at a contact position of the third plate bus bar 30-3 installed perpendicular to the hook bus bar 60 of the branch bus bar 50.

As shown in FIGS. 8 and 9, the connection member 70 crosses a plurality of hook-shaped busbars 60 installed in a horizontal direction and a plurality of third plate-shaped busbars 30-3 installed in a vertical direction. The third plate-shaped busbar 30-3 is coupled to the hook portion 62 of the hook-type busbar 60 by being fixed to the insulating case 71 and the insulating case 71 installed at the contact point. It consists of a fixing bracket member 73 for pressing and fixing.

On the other hand, Figure 10 is a perspective view showing a state in which the double removable adapter 90 according to the present invention mounted on the branch busbar (50).

As illustrated in FIG. 10, a plurality of branch busbars 50 installed in the horizontal direction are provided with a double detachable adapter 90.

And each of the double removable adapter 90 is provided with a circuit breaker (5) detachably.

Such a double removable adapter 90 of the present invention is not only mechanically fixed but also electrically connected to the branch busbar 50 including a plurality of hook-type busbars 60 installed in the horizontal direction. The predetermined power supply is supplied to the circuit breaker 5 for distribution.

11 is a rear perspective view showing the rear structure of the double detachable adapter 90 according to the present invention, and FIG. 12 is an exploded perspective view showing the configuration of the double detachable adapter 90 in detail. 13 is a rear exploded perspective view showing the rear structure of the double detachable adapter 90 in detail, and FIG. 14 is a side cross-sectional view showing the internal structure of the double detachable adapter 90 in detail.

10 to 14, the dual detachable adapter 90 according to the present invention includes a rectangular adapter case 91 mounted on a branch busbar 50 inside a second cabinet 4, and the adapter case ( An adapter fixing bracket (97) installed at the 91 and detachably coupled to the branch busbar (50) and electrically connected to the branch busbar (50), and installed at the adapter case (91) and electrically connected to the adapter fixing bracket (97). The first connection bar 101 is formed, an opening 93 through which the first connection bar 101 is partially exposed, and an upper plate 92 coupled to the adapter case 91, and the adapter case 91. A circuit breaker (5) detachably coupled to the circuit board, a second connection bar (201) installed on the circuit breaker (5) and electrically connected to the first connection bar (101), and the first It comprises a fixing device 210 for fixing the connection portion of the connecting bar 101 and the second connecting bar 201.

Hereinafter, for convenience of description, the direction in which the circuit breaker 5 of the dual detachable adapter 90 is positioned as the upper direction and the direction in which the adapter case 91 is positioned to the lower direction will be described.

The adapter case 91 is formed of an insulating plastic material, and a guide channel 192 in which the first connection bar 101 is accommodated is formed inside the rear part to which the upper plate 92 is coupled.

Adapter fixing brackets 97 electrically connected to the hook portion 62 of the hook-type busbar 60 are respectively installed at predetermined positions of the guide channel 192.

The adapter fixing bracket 97 is formed by bending a conductive metal plate in a 'c' shape, and includes a pair of locking portions 297 positioned at left and right sides and a horizontal connection portion connecting the pair of locking portions 297 ( 298 and a fixing bolt 99 rotatably fastened to a fastening hole formed in the horizontal connection part 298.

In addition, a fitting protrusion 97-1 is formed on an outer surface of the locking part 297, and a fitting groove 112 into which the fitting protrusion 97-1 is fitted is provided at the guide channel 192 of the adapter case 91. Formed.

The adapter fixing bracket 97 is inserted into the fitting groove (97-1) formed in the locking portion 297 in the fitting groove 112 of the adapter case 91 in a state where the adapter case 91 in the upper adapter case 91 It is fixed to the adapter case 91 by passing through the fixing bolt 99 through the through hole 109 formed in the 91 and fastening to the fastening hole of the horizontal connection portion 298.

As described above, in the state where the adapter fixing bracket 97 is installed in the adapter case 91, the locking portion 297 of the adapter fixing bracket 97 is exposed out of the opening 93 formed in the upper plate 92, and the exposed locking The part 297 is hooked on the hook part 62 of the hook-type busbar 60, and is connected.

On the other hand, the guide channel 192 of the adapter case 91 is provided with a first connection bar 101 connected to the adapter fixing bracket 97 to electrically connect the hook-type busbar 60 and the circuit breaker 5 for distribution. You are connected.

The first connection bar 101 has a different length to selectively connect with a plurality of hook-type busbars 60, the first connection bar 101 is horizontal guided along the guide channel 192 Connected to the hook portion 62 of the hook-type busbar 60 in a state in which the portion 100 is protruded upward on one side of the horizontal portion 100 and exposed to the outside of the opening 93 formed in the upper plate 92. And a fixed end 103 inserted into and fixed to the fastener 111 formed on the guide channel 192 of the adapter case 91 when the first connecting bar 101 and the first connecting bar 101 are mounted. And a vertical portion 104 that is bent vertically to 100 and a terminal portion 105 that is vertically connected to an end of the vertical portion 104 and electrically connected to an end of the second connection bar 201. .

When the first connection bar 101 having such a structure is installed in the adapter case 91, the first connection bar 97 is fixed in the guide channel 192 through the fixing bolt 99 in the first connection state. A fixing end 103 located at one end of the bar 101 is inserted and fixed to the fixing tool 111 of the adapter case 91, and the terminal part 105 located at the other end of the first connection bar 101 is an adapter case. An exposed structure is formed on the upper jaw protruding from the upper end of the 91.

In this state, when the fixing bolt 99 is rotated to one side, the end of the fixing bolt 99 presses the connecting portion 102 of the first connecting bar 101 and at the same time moves the catching portion 297 toward the upper plate 92. By pulling, the locking portion 297 is fixed to the hook portion 62 of the hook-type busbar 60.

Therefore, when the double detachable adapter 90 according to the present invention is hung in the orthogonal direction with respect to the plurality of hook-type busbars 60 installed in the horizontal direction, the hook portion 297 is the hook portion of the hook-type busbar 60. (62). Then, when the fixing bolt 299 is turned to one side, the locking portion 297 is tightly coupled to the hook portion 62 and is firmly fixed.

Meanwhile, a plurality of second connection bars electrically connected to the first connection bar 101 when the circuit breaker 5 is mounted on the front portion of the circuit breaker 5 mounted on the upper part of the adapter case 91 ( 201).

The second connection bar 201 is made of a metal plate in the form of a strip like the first connection bar 101, one end of the second connection bar 201 through the bolt 220, the circuit breaker (5) The terminal portion 202 is fixed to the front portion of the circuit breaker and electrically connected to the circuit breaker internal circuit, and the other end portion is in close contact with the terminal portion 105 of the first connecting bar 101 and electrically connected thereto.

The second connection bar 201 has a structure in which the middle portion is bent, and one end portion fixed by the bolt 220 is kept in parallel with the terminal portion 202 located at the lower side opposite to the second connection bar 201.

On the other hand, the fixing device 210 which connects and fixes the first and second connection bars 101 and 201 at the same time has respective terminal portions 105 and 202 of the first and second connection bars 101 and 201 inside. The fixed frame 211 is formed a space portion that can be inserted, the screw shaft 213 is screwed to the upper portion of the fixed frame 211, and is rotatably coupled to the lower end of the screw shaft 213 The pressing piece 212 presses the terminal portion 202 of the second connecting bar 201 downward.

The fixing frame 211 is formed by bending a strip-shaped metal plate in a rectangular shape, and both ends of the metal plate are stacked on top of each other to be coupled to each other.

In addition, a coupling portion 214 having a thinner width is extended at the overlapped outer end portion, and a groove corresponding to the shape of the coupling portion 214 is formed at a side of the fixing frame 211, and the coupling portion 214 is formed. ) Is bent along the outer surface of the fixing frame 211 to form a structure coupled to the groove.

At this time, the coupling portion 214 is formed on the side of the fixed frame 211 by forming a convex circular convex portion 215 at the end of the coupling portion 214 so that the coupling portion 214 is not unscrewed upward in the state fitted into the groove It is preferable that the convex portion 215 is engaged with the circular groove to maintain the engaged state.

The fixed frame 211 is mounted in the receiving groove provided on one side of the adapter case 91 so that the terminal portion 105 of the first connection bar 101 is accommodated, the lower end of the fixed frame 211 is The bottom surface of the receiving groove and the terminal portion 105 is sandwiched between the fixed structure.

The screw shaft 213 is screwed to the nested portion of the upper part of the fixing frame 211, the groove of the straight or cross-shaped or polygonal shape is formed on the upper end of the screw shaft 213 is rotated by inserting a tool such as a driver It is supposed to be possible.

The pressing piece 212 is made of a metal plate in the form of a convex upwardly in the center and the lower end of the screw shaft 213 is rotatably coupled to the center.

The pressing piece 212 is moved up and down in conjunction with the rotation of the screw shaft 213, as shown in the use state of Figure 17, the second connecting bar as the screw shaft 213 is rotated and tightened Pressing down the upper surface of the terminal portion 202 of the 201 to secure each of the terminal portions 105 and 202 of the first and second connection bars 101 and 201 in a strong close state while maintaining an electrical connection state. do.

The fixed frame 211 of the above-described shape has an advantage of easy manufacturing and low manufacturing cost because it has a simple structure that combines the band-shaped metal plate in a rectangular shape and then combines it using the coupling part 214 formed at the end. have. In addition, since the screw shaft 213 is fastened to two ends overlapping each other on the fixing frame 211 at the same time, the screw shaft 213 can maintain a stable fastening structure, and the screw shaft 213 rotates. If possible, stable operation is possible without flowing in the horizontal direction.

Each of the terminal parts 105 and 202 of the first and second connection bars 101 and 201 and the fixing device 210 for tightly fixing them to each other are wrapped through the insulating case 110 to maintain insulation from the outside. Done.

A plurality of rectangular openings 116 are formed at the bottom of the front and rear surfaces of the insulating case 110 so that the respective terminal portions 105 and 202 of the first and second connection bars 101 and 201 can be inserted. have.

In addition, the front side opening 116 is coupled to the insulating cap 119, which is a plate-shaped injection molding, to insulate the connection portion of the first and second connection bars 101 and 201 from the outside.

In addition, a tool insertion hole 113 is formed on the upper surface of the insulating case 110 to insert the tool to rotate the screw shaft 213 therein.

In addition, at the lower left and right sides of the insulating case 110, a coupling piece 115 having a hook shape is elastically fitted to the coupling groove 118 formed in the adapter case 91.

On the other hand, between the distribution circuit breaker 5 and the adapter case 91 is interposed a sliding plate 230, which is an intermediate medium member to facilitate the attachment and detachment of the circuit breaker 5 for distribution.

The sliding plate 230 slides forward from the rear to the front along the upper surface of the adapter case 91 and is slidingly coupled to the adapter case 91.

At this time, the front surface of the sliding plate 230 is formed with a coupling piece 231 is inserted into the coupling groove (not shown) formed in the front end portion of the adapter case 91.

In addition, the rear end portion of the adapter case 91 is provided with a separation prevention plate 120 for supporting the rear end of the sliding plate 230 which is sliding seated on the upper surface of the adapter case 91.

To this end, fitting pieces 121 are formed at left and right sides of the release preventing plate 120, and fitting grooves 114 are formed at the rear ends of the adapter case 91 to which the fitting pieces 121 are fitted. .

As such, in the state in which the release preventing plate 120 is coupled to the adapter case 91, the upper portion of the release preventing plate 120 is upper by the thickness of the sliding plate 230 seated on the adapter case 91. Protrudes to prevent the sliding plate 230 is separated from the rear.

As shown in the use state diagram of FIG. 15, the sliding plate 230 has two sliding grooves 232 formed in the longitudinal direction, and sliding blocks 240 are slidable in the sliding grooves 232. Is installed.

In this case, the sliding plate 230 is formed with a plurality of reinforcing horizontal members that traverse the sliding groove 232 vertically to compensate for the rigidity of the sliding groove 232 portion.

The sliding block 240 has a protruding end 241 that is exposed to the upper portion in the state inserted into the sliding groove 232 in the center portion, the fastening hole 242 to which the bolt 250 is fastened to the protruding end 241. ) Is formed.

In addition, both ends of the protruding end 241 are formed with guide ends 243 which are guided by a peripheral portion of the sliding groove 232.

The sliding block 240 is assembled by bolted to the bottom of the circuit breaker 5 through the bolt 250 in the lower portion of the sliding plate 230.

As described above, since the sliding block 240 has a structure capable of moving in the front and rear directions of the sliding plate 230, the size and size of the circuit breaker 5 mounted on the adapter case 91 is different, so that the circuit breaker for distribution is different. (5) Even in the case where the fastening holes are formed at different bottoms, the sliding block 240 may be properly adjusted to fit the fastening holes so as to be compatible with the mounting holes.

Hereinafter, the operation of the present invention will be described.

16 is a use state diagram showing the state in which the circuit breaker 5 for power distribution according to the present invention is assembled to the adapter case 91.

First, the double removable adapter 90 of the present invention is coupled to the bottom of the circuit breaker 5 through the bolt 250 in the state in which the sliding block 240 is inserted into the sliding groove 232, the sliding plate 230 is The distribution circuit breaker 5 assembly coupled to the bottom portion is provided.

Then, when the circuit breaker 5 assembly is seated on the upper surface of the adapter case 91 and slides forward, the terminal portion 105 of the first connection bar 101 provided in the adapter case 91 is slid. ) And the terminal portion 202 of the second connection bar 201 provided in the circuit breaker 5 are closely connected to each other, and the circuit breaker 5 and the adapter case 91 are electrically connected to each other.

In addition, in the state where the distribution circuit breaker 5 assembly is fully advanced toward the front side of the adapter case 91, the rear end of the sliding plate 230 is coupled to the release prevention plate 120 at the rear end of the adapter case 91. Supporting the portion prevents the distribution breaker 5 assembly from being displaced backwards.

Meanwhile, depending on the situation, the terminal parts 105 and 202 of the first and second connection bars 101 and 201 may not be in contact with each other due to an assembly error of components generated during manufacturing of the product. For this reason, in the present invention, a separate fixing device 210 is used to securely connect and connect the connecting portions of the first and second connecting bars 101 and 201.

That is, by rotating the screw shaft 213 of the fixing device 210 by forcibly pressing the connection portion of the first and second connection bars 101 and 201 through the pressing piece 212, the first and second connection bars. Electrically connecting the (101) to the 201, and at the same time so that the connection portions of the first and second connecting bar (101) 201 by the external force is not separated from each other.

The connection part of the first and second connection bars 101 and 201 is fixed through the fixing device 210, and then the insulating case 110 is covered with the insulating device 110 outside the fixing device 210 to insulate the circuit breaker for distribution. 5) and the assembly of the adapter case 91 is completed.

As described above, the detachable adapter of the present invention has a simple structure in which the assembly of the circuit breaker 5 for the distribution is slid to the upper surface of the adapter case 91 so that the detachable adapter is detachable. In addition to being very simple and easy, the assembly time is shortened, there is an advantage that can be performed quickly. In addition, when the detachable circuit breaker is attached and detached, it is possible to reduce the hassle of separating or combining several wire cables and screw bolts as in the related art, thereby obtaining an advantage of improving workability.

In addition, the dual removable adapter 90 of the present invention is installed in such a manner as to be orthogonal to the branch busbars 50 arranged in the horizontal direction inside the cabinet, so that it can be easily installed at a desired position and is also mechanically robust. There is an advantage to maintain the bonding force. In addition, since it is not necessary to go through a separate cumbersome screw fastening process as in the prior art in order to mount the adapter to the branch busbar 50, the assembly and disassembly can be obtained very quickly and easy to work.

1 is a schematic block diagram showing an example of a low-voltage switchboard according to the prior art.

Figure 2 is a perspective view showing a busbar system of a low pressure switchboard according to the prior art.

Figure 3 is a front view showing a low-voltage switchboard to which the double removable adapter according to the present invention is applied.

Figure 4 is a perspective view showing a low-voltage switchboard to which the double removable adapter according to the present invention.

Figure 5 is a side view showing a first cabinet of the assembled low voltage switchgear according to the present invention.

Figure 6 is a side view showing a low-voltage switchboard to which the double removable adapter according to the present invention.

Figure 7 is an exploded perspective view showing a branch busbar according to the present invention.

8 and 9 are a perspective view and an exploded perspective view showing a bus bar connecting member according to the present invention.

10 is a perspective view showing a state in which the double removable adapter according to the present invention is mounted on the branch busbar.

Figure 11 is a rear perspective view showing the back structure of the double removable adapter according to the present invention.

12 is an exploded perspective view showing in detail the configuration of the dual removable adapter according to the present invention.

Figure 13 is a rear exploded perspective view showing in detail the back configuration of the double removable adapter according to the present invention.

Figure 14 is a side cross-sectional view of a dual removable adapter according to the present invention.

15 is a plan view showing a sliding structure of a sliding block according to the present invention.

Figure 16 is a use state showing the structure that the circuit breaker assembly according to the invention detachable to the adapter case.

17 is a use state diagram showing a structure in which the first and second connection bars are connected and fixed through the fixing device of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

1: Low voltage switchboard 2,4: 1st, 2nd cabinet

5: circuit breaker 50: branch busbar

60: hook type busbar 91: adapter case

92: top plate 97: adapter fixing bracket

101,201: 1st, 2nd connection bar 110: insulation case

120: departure prevention plate 210: fixing device

211: fixed frame 212: pressing piece

230: sliding plate 240: sliding block

Claims (6)

An adapter case mounted on the branch busbar inside the cabinet; An adapter fixing bracket installed in the adapter case and detachably coupled to the branch busbar and electrically connected to the branch busbar; A first connection bar installed in the adapter case and electrically connected to the adapter fixing bracket; A distribution circuit breaker detachably coupled to the adapter case; A second connection bar installed in the distribution breaker and electrically connected to the first connection bar; Dual detachable adapter for low-voltage switchgear characterized in that it comprises a fixing device for fixing the connecting portion of the first connection bar and the second connection bar. The method of claim 1, wherein the fixing device, A fixing frame inserted and fixed between the adapter case and the first connection bar; A pressing piece for pressing the upper portion of the second connecting bar in the fixing frame to closely fix the first connecting bar; The screw is fastened to the fixing frame, the pressure piece is rotatably coupled to the end, the low pressure switchgear characterized in that it comprises a screw shaft for pressing the pressure piece in rotation to closely adhere to the first connection bar. Dual removable adapter. According to claim 2, The adapter case is further provided with an insulating case surrounding the first and second connection bar and the fixing device, The insulated case is a double detachable adapter for a low pressure switchboard, characterized in that the insertion hole is formed that can be inserted into the tool for rotating the screw shaft. According to claim 1, Sliding plate coupled to the circuit breaker for sliding and detachable to the adapter case; It further comprises a coupling member for coupling the sliding plate to the circuit breaker, Double detachable adapter for low-pressure switchboard, characterized in that the coupling piece is formed at the end of the sliding plate elastically coupled to the coupling groove of the adapter case. [5] The dual detachable adapter for low voltage switchgear according to claim 4, further comprising a detachment preventing plate installed to prevent the detachment of the sliding plate seated on the adapter case. The dual detachable adapter of claim 4, further comprising a sliding block slidably installed on the sliding plate and coupled to the circuit breaker through the coupling member.

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