JP2016032410A - Cabinet for distribution board, distribution board and method of manufacturing distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabinet for a distribution board, a distribution board and a method of manufacturing a distribution board that can further enhance workability in a wire pull-in work.SOLUTION: A box 3 is configured in a rectangular parallelepiped shape so that the front surface thereof is opened as an opening face 31. The box 3 has a first wire passing port 34 opened to the lower surface. A bed 5 has a second wire passing port opened so as to confront the first wire passing port 34, and a third wire passing port 54 opened to a first side surface 531, and a wire passing hole through which the second wire passing port and the third wire passing port 54 are connected to each other is formed. A first front frame 11 through which the first wire passing port 34 and the opening face 31 are isolated from each other is detachably secured to the box 3. The bed 5 has an open window which is formed to straddle a mount face and the first side surface 531, and the open window forms the second wire passing port and the third wire passing port 54.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to a distribution board cabinet, a distribution board, and a distribution board manufacturing method, and more particularly to a distribution board cabinet, a distribution board, and a distribution board manufacturing method used for power distribution.

  Conventionally, as a non-residential distribution board installed in a building or factory, a distribution board with a door body that houses a breaker inside the case body and covers the opening on the front of the case body so that it can be opened and closed. Provided (for example, see Patent Document 1). The door body is supported by a frame portion around the opening on the front surface of the case body.

  In the distribution board described in Patent Document 1, a wiring groove for passing an electric wire is formed in the upper side surface portion of the case body. Furthermore, a blindfold member is attached to the case main body so as to close a portion where the wiring groove is formed in the frame portion. Thereby, the distribution board of patent document 1 can hide the drawing-in part of an electric wire with a blindfold member, drawing an electric wire in a case main body through a wiring groove | channel.

JP 2011-36036 A

  However, in the distribution board described in Patent Document 1, since the drawing of the electric wire is performed from one place on the upper surface of the distribution board, there is a possibility that it takes time to draw the electric wire.

  The present invention has been made in view of the above reasons, and an object of the present invention is to provide a distribution board cabinet, a distribution board, and a method for manufacturing the distribution board that can further improve workability with respect to the work of drawing in an electric wire. To do.

  The cabinet of the distribution board according to the present invention includes a box provided with an inner space in which a circuit breaker for wiring is disposed in a rectangular parallelepiped shape whose front surface is opened as an opening surface, and the box supported by the box. A protection plate that moves between a position that covers the opening surface and a position that opens; and a base that is disposed below the box and supports the box, wherein the box opens on a lower surface. A second through-hole opening at a position facing the first through-out port of the mounting surface facing the lower surface of the box; and the base orthogonal to the placement surface A third line opening that opens to a first side faced in the same direction as the opening surface among the plurality of side surfaces, and the base includes the second line opening and the third line opening A through hole connecting the through hole is formed, and in the box, The first front frame that separates the first through hole and the opening surface is removably attached, and the base is an opening window that extends across the mounting surface and the first side surface. Is formed, and the opening window forms the second through-hole and the third through-hole.

  In the distribution board cabinet, a decorative plate that covers an upper portion of the opening window on the first side surface is detachably attached to the base, and the opening window sandwiches the decorative plate with the first plate. It is desirable to divide into 2 through-holes and the 3rd through-holes.

  In the distribution board cabinet, it is more preferable that the box further includes a fourth wire opening opening on an upper surface.

  In this distribution board cabinet, it is more preferable that a second front frame separating the fourth through hole and the opening surface is detachably attached to the box.

  A distribution board according to the present invention includes the cabinet of the distribution board, a main breaker attached to the internal space as the circuit breaker, and a plurality of branch breakers.

  A method for manufacturing a distribution board according to the present invention is a method for manufacturing a distribution board using a cabinet of the above distribution board, wherein the first step of installing the foundation on an installation surface, and the box as the foundation. A second step of fixing the first front frame on the box; and a third step of attaching the first front frame to the box.

  A method for manufacturing a distribution board according to the present invention is a method for manufacturing a distribution board using a cabinet of the above distribution board, wherein the first step of installing the foundation on an installation surface, and the box as the foundation. And a second step of attaching the first front frame to the box, and a fourth step of attaching a decorative plate to the base.

  In the present invention, since the first wire opening that opens on the lower surface of the box is connected to the third wire hole on the base through the second wire hole and the wire hole on the foundation, There is an advantage that workability can be further improved.

It is a perspective view in the state where the protection board of the distribution board concerning an embodiment opened. It is a perspective view in the state where the protection board of the distribution board concerning an embodiment was closed. It is a perspective view of the state where the decorative board was attached to the base of the distribution board concerning an embodiment. It is a perspective view of the base of the distribution board which concerns on embodiment. It is the perspective view which expanded the lower end part of the distribution board which concerns on embodiment. It is an expansion perspective view of the state where the 1st front frame of the distribution board concerning an embodiment was removed. It is the perspective view which expanded the upper end part of the distribution board which concerns on embodiment. It is an expansion perspective view of the state where the 2nd front frame of the distribution board concerning an embodiment was removed. It is the schematic which shows the AA cross section of FIG.

  As shown in FIGS. 1 to 3, the cabinet 2 of the distribution board 1 according to the present embodiment includes a box 3, a protection plate 4, and a base 5.

  The box 3 is formed in a rectangular parallelepiped shape whose front surface is opened as an opening surface 31, and an internal space 32 in which the circuit breaker 6 for wiring is disposed is provided. The protection plate 4 is supported by the box 3 and moves between a position covering the opening surface 31 of the box 3 and a position opening. The base 5 is disposed below the box 3 and supports the box 3.

  The box 3 has a first through hole 34 that opens to the lower surface 33 (see FIG. 9).

  The base 5 has a second connection port 52 (see FIG. 9) and a third connection port 54. The second wire opening 52 opens at a position facing the first wire opening 34 in the mounting surface 51 facing the lower surface 33 of the box 3. The third through hole 54 opens to the first side surface 531 facing the same direction as the opening surface 31 among the plurality of side surfaces 53 (531 to 534) orthogonal to the placement surface 51.

  In the base 5, a through hole 55 that connects the second through hole 52 and the third through hole 54 is formed.

  A first front frame 11 separating the first through hole 34 and the opening surface 31 is detachably attached to the box 3.

  The base 5 is formed with an opening window 58 (see FIG. 4) that is opened across the placement surface 51 and the first side surface 531, and the opening window 58 is formed by the second wiring port 52 and the third wiring port. 54 is formed.

  According to this configuration, the first through-hole 34 that opens to the lower surface 33 of the box 3 passes through the second through-hole 52 and the through-hole 55 of the base 5 and the third through-hole 54 of the base 5. Connected to. Therefore, the electric wire 7 (see FIG. 9) connected to the circuit breaker 6 in the box 3 is drawn into the cabinet 2 from the third through hole 54 opened in the first side surface 531 of the base 5. The electric wire 7 is drawn into the box 3 from the first wire opening 34 opened on the lower surface 33 of the box 3 through the inside of the base 5. In other words, the box 3 is lifted from the installation surface 8 such as the floor (see FIG. 9) by the amount of the base 5, so that the electric wire 7 drawn into the cabinet 2 from the third connection port 54 is connected to the box 3. It is drawn from the lower surface 33 of the box 3 through a gap formed between the installation surface 8 and the installation surface 8.

  In addition, since the first front frame 11 is removable, the electric wire 7 is introduced from the front of the first through hole 34 into the first through hole 34 in a state in which the first front frame 11 is removed. be able to. Furthermore, since the opening window 58 opened across the placement surface 51 and the first side surface 531 forms the second wiring port 52 and the third wiring port 54, the electric wire 7 is connected to the second wiring port 52. It can be introduced from the front of the line opening 52 to the second line opening 52 and the third line opening 54. In other words, the electric wire 7 can be easily introduced from the front without passing through the first through-hole 34, the second through-hole 52, and the third through-hole 54.

  Therefore, the cabinet 2 of the distribution board 1 of the present embodiment can easily draw the electric wire 7 into the distribution board 1 from the lower part of the cabinet 2, and the workability of the drawing operation of the electric wire 7 is further improved. Improvement is possible.

  Further, the distribution board 1 according to the present embodiment includes the cabinet 2 described above, a main breaker 61 attached to the internal space 32 as a circuit breaker 6 and a plurality of branch breakers 62, 62.

  Hereinafter, the structure of the cabinet 2 of the distribution board 1 and the distribution board 1 which concern on this embodiment is demonstrated in detail. However, the configuration described below is only an example of the present invention, and the present invention is not limited to the following embodiment, and the technical idea according to the present invention is not deviated from this embodiment. Various changes can be made in accordance with the design or the like as long as they are not.

  The distribution board 1 according to the present embodiment is not a residential distribution board installed in a house (a detached house or each dwelling unit of an apartment house), but is installed in, for example, an electric room, a building, or a factory of an apartment house. This is a commercial (non-residential) distribution board that is installed on the floor of an installation space such as an electrical room. That is, the distribution board 1 according to the present embodiment is assumed to be a floor-standing self-standing distribution board rather than a wall-mounted type. Moreover, below, the upper and lower sides and right and left which looked at the distribution board 1 of the state put on the floor from the front are demonstrated as upper and lower left and right. However, these settings are not intended to specifically limit the application, installation form, and orientation of the distribution board 1 according to the present invention. For example, the distribution board 1 may be a wall-mounted type.

(Cabinet structure)
First, the cabinet 2 of the distribution board 1 will be described. The cabinet 2 includes the box 3, the protection plate 4, and the base 5 as described above.

  As shown in FIG. 1, the box 3 is a rectangular parallelepiped box body whose front view is a rectangular shape that is long in the vertical direction, and whose front surface is opened as an opening surface 31. (See FIG. 9). The box 3 has an internal space 32 for accommodating at least a main breaker 61 as a circuit breaker 6 and a plurality of branch breakers 62, 62.

  Specifically, the box 3 includes a rectangular plate-like back plate 301, a left side plate 302 protruding forward from the left end edge of the back plate 301, and a right side plate 303 protruding forward from the right end edge of the back plate 301. Have. Further, the box 3 includes an upper plate 304 that connects upper end edges of the left side plate 302 and the right side plate 303, and a lower plate 305 that connects lower end edges of the left side plate 302 and the right side plate 303. In other words, the left side plate 302, the right side plate 303, the upper plate 304, and the lower plate 305 constitute a rectangular frame, and the back surface of the frame is closed by the back plate 301. It becomes an opening. A space surrounded by the back plate 301, the left side plate 302, the right side plate 303, the upper plate 304, and the lower plate 305 constitutes an inner space 32.

  The shape of the box 3 can be changed as appropriate. The box 3 is not limited to a vertically long shape that is long in the vertical direction. For example, the box 3 may have a square shape when viewed from the front or a horizontally long shape that is long in the left-right direction. Good.

  The cabinet 2 of the distribution board 1 according to the present embodiment includes, as the internal space 32, a first space 321 that houses the main breaker 61 and a second space 322 that houses a plurality of branch breakers 62, 62. A third space 323 is provided. The third space 323 is a space for storing a switch 63 such as a remote control breaker or a remote control relay described later. In the present embodiment, the internal space 32 is arranged in the box 3 in the order of the first space 321, the second space 322, and the third space 323 from the top.

  More specifically, the first space 321 is provided at a substantially central portion in the left-right direction of the back plate 301 and at a position higher than the center in the vertical direction. The box 3 has sufficient space above, below, to the left, and to the right of the first space 321.

  The second space 322 is provided below the first space 321. As will be described in detail later, the plurality of branch breakers 62, 62... Are divided into a left side and a right side of a conductive bar (not shown), and a plurality of branch breakers 62 are arranged in the vertical direction. Therefore, the second space 322 for attaching the plurality of branch breakers 62, 62... Is provided below the first space 321 in the cabinet 2 and on the left side and the right side of the conductive bar, respectively.

  The third space 323 is provided below the second space 322 on the left side and the right side of the conductive bar, respectively, similarly to the second space 322. However, the arrangement of the internal space 32 is merely an example and can be changed as appropriate.

  The protection plate 4 is formed in a rectangular plate shape having a size and shape matching the opening surface 31 of the box 3 so as to close the opening surface 31 of the box 3. The protection plate 4 is held by a first front frame 11 and a second front frame 12, which will be described later, or a right side plate 303 so as to open and close with the right end portion of the opening surface 31 of the box 3 as a rotation axis. Thereby, the protection plate 4 moves between a position (position shown in FIG. 2) covering the opening surface 31 of the box 3 and a position (position shown in FIG. 1) that opens. The protective plate 4 is not limited to the structure directly supported by the box 3 but is indirectly supported by the box 3 by being supported by a frame member (not shown) accommodated in the box 3. It may be a configuration. A frame member here is a member for attaching the board | substrate with which several branch breakers 62, 62 ... were attached.

  A display window 41 is formed on the protection plate 4. As shown in FIG. 2, the display window 41 is formed at a position corresponding to the internal space 32 in a state where the protective plate 4 is closed (the protective plate 4 is in a position covering the opening surface 31). Thereby, the user can visually recognize the operation state of the internal unit (the circuit breaker 6 for wiring) through the display window 41 with the protection plate 4 closed. Here, the display window 41 is provided at a position corresponding to the first space 321 and the second space 322.

  A handle 42 that is operated when the protection plate 4 is opened is provided at the left end of the protection plate 4.

  The base 5 is attached to the lower surface 33 of the box 3 so as to support the weight of the box 3. The base 5 is formed so that its outer peripheral shape is substantially the same as that of the box 3 in a projection view seen from above. The vertical dimension (height dimension) of the base 5 is set smaller than the horizontal dimension of the base 5 and the depth direction (front-rear direction) of the base 5.

  As shown in FIG. 3, the base 5 includes a rectangular plate-like bottom plate 56 and a support frame 57 provided so as to protrude upward from the outer peripheral portion of the upper surface of the bottom plate 56. The support frame 57 is provided along the outer periphery of the bottom plate 56 except for the front end portion of the bottom plate 56 so as to have a substantially C-shape opened forward in a top view. As a result, in the base 5, the second through hole 52 opens in a region surrounded by the support frame 57 in the mounting surface (top surface) 51 facing the lower surface 33 of the box 3. Furthermore, the base 5 is a first side surface (a first side surface 53 (first side surface 531 to fourth side surface 534)) orthogonal to the placement surface 51 and facing the same direction as the opening surface 31 of the box 3 ( In the front surface 531, a third through hole 54 opens between a pair of end faces of the support frame 57 facing in the left-right direction. A hollow portion surrounded by the bottom plate 56 and the support frame 57 serves as a through hole 55 (see FIG. 9) that connects the second through hole 52 and the third through hole 54.

  In the present embodiment, as shown in FIG. 4, the base 5 is formed with an opening window 58 that opens across the placement surface 51 and the first side surface 531. As shown in FIG. 3, the base plate 5 is detachably attached with a decorative plate 9 that covers the upper portion of the opening window 58 in the first side surface 531. Thereby, the opening window 58 is divided into the second wire opening 52 and the third wire opening 54 with the decorative plate 9 interposed therebetween.

  That is, the base 5 is originally formed with one opening window 58 so as to straddle the placement surface 51 and the first side surface 531, and this opening window 58 is divided into two by the decorative plate 9, and the second through-hole is formed. A line opening 52 and a third line opening 54 are formed (configured).

  As shown in FIG. 3, the decorative plate 9 is substantially L-shaped by a vertical plate 91 attached along the first side surface 531 of the base 5 and a horizontal plate 92 attached along the placement surface 51 of the base 5. It is formed in a shape. The vertical plate 91 has substantially the same horizontal dimension as that of the base 5, and has a vertical dimension that is about half that of the base 5, and is attached so as to cover the upper half of the opening window 58 on the first side surface 531. It is done. The horizontal plate 92 has a horizontal dimension that is substantially the same as the opening window 58 in the first side surface 531, and a depth direction (front-rear direction) dimension that is substantially the same as the width dimension of the support frame 57.

  The decorative plate 9 is fixed to the support frame 57 of the base 5 by a plurality of mounting screws 93, 93. At this time, the decorative plate 9 is attached to the base 5 so that the upper surface of the horizontal plate 92 is flush with the mounting surface 51 of the base 5.

  A plurality of mounting holes 571, 571,... For fixing the box 3 are formed on the upper surface of the support frame 57. The box 3 is mechanically coupled to the base 5 using the mounting holes 571, 571, etc. while being placed on the support frame 57. In addition, a pair of plate members 59 and 59 mechanically coupled to the support frame 57 are provided at both ends in the left-right direction in the region surrounded by the support frame 57 on the upper surface of the bottom plate 56.

  Further, a door (door) (not shown) is provided in front of the protection plate 4. The door moves between a position covering the protective plate 4 and a position opening.

  By the way, the cabinet 2 of the distribution board 1 according to the present embodiment has a first hole opened in the lower surface 33 of the box 3 by forming a rectangular hole in the lower plate 305 of the box 3 as shown in FIG. Is formed. The first wire opening 34 faces the second wire opening 52 of the base 5 in a state where the box 3 is attached to the base 5. Therefore, the first line 34 is connected to the third line 54 of the base 5 through the second line 52 and the line 55 of the base 5.

  Here, the first front frame 11 that separates the first through hole 34 and the opening surface 31 is detachably attached to the box 3. In other words, the first through hole 34 is opened forward, and in the state where the first front frame 11 is attached to the box 3, the open part of the first through hole 34 is the first front frame. 11 is blocked. In the state where the first front frame 11 is removed, the first through-hole 34 is continuous with the opening surface 31 as shown in FIG.

  Specifically, as shown in FIG. 6, the lower plate 305 is formed in a C shape that is opened forward in a top view, and the first front frame 11 is attached to the box 3 so as to close the open portion. It is attached. As a result, the lower plate 305 and the first front frame 11 constitute a frame surrounding the four sides of the first through hole 34. Since the 1st front frame 11 which block | closes the front of the 1st wiring port 34 among this frame body is removable, the 1st wiring port 34 is open | released ahead and the cabinet 2 is the opening surface 31. It is possible to switch between a connected state and a state in which the open part of the first through hole 34 is closed. The first front frame 11 may be fixed to the lower plate 305 or may be fixed to the left side plate 302 and the right side plate 303.

  Further, in the present embodiment, the cabinet 2 has a fourth through hole 36 opened in the upper surface 35 of the box 3 by forming a rectangular hole in the upper plate 304 of the box 3 as shown in FIG. Is formed.

  Further, the second front frame 12 that separates the fourth through hole 36 and the opening surface 31 is detachably attached to the box 3. In other words, the fourth through hole 36 is opened forward, and when the second front frame 12 is attached to the box 3, the open part of the fourth through hole 36 is the second front frame. 12 is blocked. In a state in which the second front frame 12 is removed, the fourth through hole 36 continues to the opening surface 31 as shown in FIG.

  Specifically, as shown in FIG. 8, the upper plate 304 is formed in a C shape that is opened forward in a top view, and the second front frame 12 is attached to the box 3 so as to close the open portion. It is attached. As a result, the upper plate 304 and the second front frame 12 constitute a frame that surrounds the four sides of the fourth through hole 36. Since the 2nd front frame 12 which blocks the front of the 4th passage opening 36 among this frame can be removed, the 4th passage opening 36 is opened ahead and the cabinet 2 has the opening surface 31. It is possible to switch between the connected state and the state where the open part of the fourth through hole 36 is closed. The second front frame 12 may be fixed to the upper plate 304 or may be fixed to the left side plate 302 and the right side plate 303.

  Note that the box 3, the protection plate 4, the base 5, the decorative plate 9, the first front frame 11, and the second front frame 12 constituting the cabinet 2 are configured using a metal material in the present embodiment. However, each part of the cabinet 2 may be configured using a material other than a metal material, or may be configured by combining a metal material and a material other than a metal material.

(Structure of distribution board)
Next, the distribution board 1 in which the internal unit is attached to the cabinet 2 having the above-described configuration will be described. That is, the distribution board 1 includes a cabinet 2 and an internal unit attached to the cabinet 2.

  Here, the minimum configuration as an internal unit of the distribution board 1 includes a main breaker 61 attached to the first space 321 and a plurality of branch breakers 62, 62... Attached to the second space 322 as shown in FIG. Such a circuit breaker 6 for wiring. The circuit breaker 6 here includes not only a circuit breaker that interrupts the electric circuit when an overcurrent or a short-circuit current flows, but also an electric circuit breaker that detects the occurrence of electric leakage and interrupts the electric circuit. Furthermore, the distribution board 1 according to the present embodiment requires various internal units other than the main breaker 61 and the plurality of branch breakers 62, 62... By providing the cabinet 2 with the third space 323 as described above. It can be attached (retrofitted) accordingly.

  Below, the internal unit (the internal unit which can be attached to the cabinet 2) of the distribution board 1 is demonstrated.

  The main breaker 61 is provided with a primary side terminal (not shown) in the upper part and a secondary side terminal (not shown) in the lower part. A primary-phase terminal of the main breaker 61 is electrically connected to a single-phase three-wire service line (not shown) of a system power supply (commercial power supply), for example, a service line from a power receiving facility such as a cubicle. On the secondary side of the main breaker 61, a conductive bar (not shown) made of a conductive member, which is a long plate shape that is long in the vertical direction, is electrically connected.

  Here, since a single-phase three-wire system is assumed as the power distribution method, the conductive bar includes a neutral pole (N-phase) conductive bar, a first voltage pole (L1-phase) conductive bar, The voltage pole (L2 phase) conductive bar is provided. These three conductive bars are arranged below the main breaker 61 and are fixed to the cabinet 2.

  The plurality of branch breakers 62, 62... Are divided into a left side and a right side of the conductive bar in the second space 322 of the cabinet 2, and a plurality of branch breakers 62, 62.

  Each branch breaker 62 has a primary side terminal (not shown) and a secondary side terminal (not shown). The primary side terminal is electrically connected to the conductive bar, and the secondary side terminal includes Each of a plurality of electric circuits (not shown) is connected. Each branch breaker 62 is formed in a contracted dimension. Here, the agreement type dimension means a dimension (and shape) of a circuit breaker for a light distribution board in accordance with “JIS C 8201-2-1”.

  Each branch breaker 62 has an insertion port (not shown) into which the conductive bar is inserted on the surface facing the conductive bar. Three insertion ports are provided in each branch breaker 62 so as to correspond to each of the three conductive bars, and the primary side terminal has two insertion ports out of these three insertion ports. It is provided to be exposed in the mouth. Thereby, in the state where each branch breaker 62 is attached to the cabinet 2, the conductive bar is inserted into the insertion port, and the primary side terminal is electrically connected to the conductive bar.

  The branch breaker 62 connected to the neutral electrode and the first voltage electrode is provided so that the primary side terminal is exposed in each insertion port corresponding to the conductive bar of the neutral electrode and the conductive bar of the first voltage electrode. It has been. Further, the branch breaker 62 connected to the neutral electrode and the second voltage electrode is exposed so that the primary side terminal is exposed in each insertion port corresponding to the conductive bar of the neutral electrode and the conductive bar of the second voltage electrode. Is provided. The branch breaker 62 connected to the first voltage electrode and the second voltage electrode is exposed in each insertion port whose primary side terminal corresponds to the conductive bar of the first voltage electrode and the conductive bar of the second voltage electrode. It is provided to do.

  A switch 63 such as a remote control breaker or a remote control relay attached to the third space 323 is configured to open and close an electric circuit in response to an external control signal. These switches 63 are inserted, for example, in a power supply path to the lighting load, and are used for controlling lighting on / off of the lighting load.

(Distribution board manufacturing method)
Below, the manufacturing method (installation method, construction method) of the distribution board 1 using the cabinet 2 of the distribution board 1 which concerns on this embodiment is demonstrated.

  The distribution board 1 is manufactured by a first step of installing the base 5 on the installation surface 8 (see FIG. 9), a second step of mounting the box 3 on the base 5 and fixing it, And a third step of attaching one front frame 11.

  Moreover, in the structure which the cabinet 2 has the decorative board 9 as mentioned above, in addition to the said 1st-3rd process, the manufacturing method of the distribution board 1 attaches the decorative board 9 to the base 5 4th. It is preferable to have a process.

  That is, when the installer installs the distribution board 1 according to the present embodiment, the installer first installs the base 5 on which the box 3 is not attached on the installation surface 8 such as the floor (the first Process). At this time, the installer installs the base 5 on the installation surface 8 by fixing the bottom plate 56 of the base 5 to the installation surface 8 with bolts or the like. In this state, the decorative board 9 is not attached to the base 5.

  Thereafter, the installer places the box 3 on the base 5 and fixes the box 3 to the base 5 to make the cabinet 2 stand on the installation surface 8 (second step). In this state, the first front frame 11 is not attached to the box 3. Further, when the electric wire 7 is drawn from the upper end of the cabinet 2, the second front frame 12 is not attached to the box 3. Here, when the cabinet 2 is installed along a wall or the like, the installer preferably fixes at least one of the back plate 301, the left side plate 302, and the right side plate 303 of the box 3 to the wall.

  As shown in FIG. 9, the contractor has the electric wires connected to the internal unit (wiring circuit breaker 6) in the box 3 with the cabinet 2 being self-supporting through the first and second steps. 7 is pulled into the cabinet 2 from the lower end (base 5) of the cabinet 2. At this time, since the first front frame 11 and the decorative board 9 are removed, both the first and second wire openings 34 and 52 are open forward. Therefore, the installer can introduce the electric wire 7 from the front with respect to the first and second connection ports 34 and 52, and the connection port 34, the second connection port 52, and the third connection port 52. There is no need to pass the electric wire 7 through the through-hole 54.

  In addition, for example, like the lead-in wire connected to the primary side terminal of the main breaker 61, the installer also wire the electric wire 7 drawn from the upper side of the cabinet 2 in a state where the cabinet 2 is independent. The electric wires 7 drawn from the upper side of the cabinet 2 are drawn into the cabinet 2 from the upper end portion (upper surface 35) of the cabinet 2 through the fourth wiring port 36. Even in this case, since the second front frame 12 is removed and the fourth through-hole 36 is in a state of being opened to the front, the installer can The electric wire 7 can be introduced from the front to the through-hole 36.

  Thereafter, the installer attaches the first front frame 11 to the box 3 from the front, and fixes the first front frame 11 to the box 3 (third step). As a result, the open part (front part) of the first wire opening 34 is closed by the first front frame 11, and the first front frame 11 and the lower plate 305 (first communication) are closed. The electric wire 7 is restrained in the wire port 34).

  Thereafter, the installer attaches the decorative board 9 to the base 5 from the front, and fixes the decorative board 9 to the base 5 (fourth step). As a result, the upper half of the base 5 is covered with the decorative plate 9 when viewed from the front, and the electric wires 7 passing through the through-holes 55 are hardly visible from the front.

  Thereafter, the installer attaches the second front frame 12 to the box 3 from the front, and fixes the second front frame 12 to the box 3 (fifth step). As a result, the open part (front part) of the fourth wire opening 36 is closed by the second front frame 12, and the space between the second front frame 12 and the upper plate 304 (the fourth passage) is closed. The electric wire 7 is restrained in the wire port 36).

  The order of the third step, the fourth step, and the fifth step may be switched. For example, after the decorative board 9 is attached, the first front frame 11 and the second front frame 12 are attached in order. May be.

(effect)
According to the cabinet 2 of the distribution board 1 according to the present embodiment described above, the electric wire 7 connected to the circuit breaker 6 in the box 3 is open to the first side surface 531 of the base 5. It is drawn into the cabinet 2 from the through hole 54. The electric wire 7 is drawn into the box 3 from the first wire opening 34 opened on the lower surface 33 of the box 3 through the inside of the base 5.

  In addition, since the first front frame 11 is removable, the electric wire 7 is introduced from the front of the first through hole 34 into the first through hole 34 with the first front frame 11 removed. be able to. Furthermore, since the opening window 58 opened across the placement surface 51 and the first side surface 531 forms the second wiring port 52 and the third wiring port 54, the electric wire 7 is connected to the second wiring port 52. It can be introduced from the front of the line opening 52 to the second line opening 52 and the third line opening 54. In other words, the electric wire 7 can be easily introduced from the front without passing through the first through-hole 34, the second through-hole 52, and the third through-hole 54.

  Therefore, according to this cabinet 2, the electric wire 7 wired along the installation surface 8 such as a floor can be easily drawn into the distribution board 1 from the lower part of the cabinet 2, and the electric wire 7 is drawn in. Further improvement of workability can be achieved.

  Further, as in the present embodiment, the third through hole 54 faces the same direction as the opening surface 31 of the box 3 among the plurality of side surfaces 53 (the first side surface 531 to the fourth side surface 534). It is preferable that the first side surface 531 is open. According to this configuration, the electric wire 7 drawn into the box 3 from the first wire opening 34 opened in the lower surface 33 of the box 3 is brought into the cabinet 2 from the third wire opening 54 which is the front surface of the base 5. Will be drawn. Therefore, even when the left and right sides and the rear of the cabinet 2 are closed by walls or the like, the electric wire 7 can be drawn from the third through hole 54.

  Moreover, it is preferable that the decorative board 9 which covers the upper part of the opening window 58 in the 1st side surface 531 is detachably attached to the base 5 like this embodiment. According to this configuration, while removing the decorative plate 9 and simplifying the operation of passing the electric wire 7 through the second and third through holes 52 and 54, the through hole 55 can be obtained by attaching the decorative plate 9. Since the electric wire 7 passing through is less visible from the front, the appearance is improved.

  Further, as in the present embodiment, the box 3 preferably further includes a fourth wire opening 36 that opens to the upper surface 35. According to this configuration, the electric wire 7 wired along the ceiling or the like can be drawn into the distribution board 1 without being routed to the floor side, and the workability of the electric wire 7 can be further improved. Can be planned.

  In this case, it is preferable that the second front frame 12 separating the fourth through hole 36 and the opening surface 31 is detachably attached to the box 3. According to this configuration, the electric wire 7 can be introduced into the fourth through-hole 36 from the front of the fourth through-hole 36 in a state where the second front frame 12 is removed. That is, the electric wire 7 can be easily introduced from the front without passing through the fourth through hole 36.

  Further, the distribution board 1 according to the present embodiment includes the cabinet 2 described above, a main breaker 61 attached to the internal space 32 as a circuit breaker 6 and a plurality of branch breakers 62, 62. Therefore, the drawing operation of the electric wire 7 connected to the main breaker 61 and the plurality of branch breakers 62, 62... Attached to the inner space 32 is simple, and even if the number of branch breakers 62, 62. It is possible to construct.

  Moreover, according to the manufacturing method of the distribution board 1 which concerns on this embodiment, after a builder fixes the base 5 to the installation surface 8 (1st process), the box 3 is fixed to the base 5 and a cabinet. 2 is assembled (second step). Thereafter, the installer attaches and fixes the first front frame 11 from the front to the box 3 (third step), so that the workability is improved by performing the drawing operation of the electric wire 7 before the third step. Will improve.

  Furthermore, according to the manufacturing method of the distribution board 1 which has the 4th process in addition to the 1st-3rd process like this embodiment, drawing-in work of the electric wire 7 before the 3rd and 4th process By doing, the operation | work which lets the electric wire 7 pass becomes easy.

  In the present embodiment, the box 3 includes the lower plate 305 and the first through hole 34 is formed in the lower plate 305. However, the present invention is not limited to this configuration. For example, the lower plate 305 itself may be omitted. Similarly, in the present embodiment, the box 3 includes the upper plate 304, and the fourth wiring port 36 is formed in the upper plate 304. For example, the upper plate 304 itself may be omitted as long as the through hole 36 is open.

  Further, the fourth line opening 36 is not an essential configuration and can be omitted as appropriate. Furthermore, a wire opening opening to the back plate 301, the left side plate 302, and the right side plate 303 of the box 3 may be provided as appropriate.

DESCRIPTION OF SYMBOLS 1 Distribution board 11 1st front frame 12 2nd front frame 2 Cabinet 3 Box 31 Opening surface 32 Internal space 33 Lower surface 34 1st wiring port 35 Upper surface 36 4th wiring port 4 Protection board 5 Base Reference Signs List 51 Mounting surface 52 Second line port 53 Side surface 531 First side surface 54 Third line port 55 Line hole 58 Open window 6 Circuit breaker 61 Main breaker 62 Branch breaker 9

Claims (7)

A box provided with an internal space in which the front is formed as a rectangular parallelepiped with an opening surface and a circuit breaker for wiring is disposed inside;
A protective plate that is supported by the box and moves between a position that covers the opening surface of the box and a position that opens;
A base disposed below the box and supporting the box;
The box has a first wire opening that opens on a lower surface;
The base includes a second line opening that opens at a position facing the first line opening among the mounting surfaces facing the lower surface of the box, and a plurality of side surfaces orthogonal to the mounting surface. A third through hole opening in the first side facing the same direction as the opening surface,
The base is formed with a through hole connecting the second through hole and the third through hole,
A first front frame that separates the first through hole and the opening surface is detachably attached to the box,
The base is formed with an opening window that extends across the placement surface and the first side surface, and the opening window forms the second and third through holes. Distribution board cabinet characterized by that. A decorative plate that covers the top of the opening window on the first side surface is removably attached to the base,
2. The distribution board cabinet according to claim 1, wherein the opening window is divided into the second line opening and the third line opening with the decorative plate interposed therebetween. The distribution box cabinet according to claim 1, wherein the box further includes a fourth through hole opening on an upper surface. The cabinet of a distribution board according to claim 3, wherein a second front frame separating the fourth through hole and the opening surface is detachably attached to the box. The cabinet of the electricity distribution panel of any one of Claims 1-4,
A distribution board comprising: a main breaker and a plurality of branch breakers attached to the inner space as the circuit breaker. It is a manufacturing method of the distribution board using the cabinet of the distribution board of any one of Claims 1-4,
A first step of installing the foundation on an installation surface;
A second step of mounting and fixing the box on the base;
And a third step of attaching the first front frame to the box. A distribution board manufacturing method using the distribution board cabinet according to claim 2,
A first step of installing the foundation on an installation surface;
A second step of mounting and fixing the box on the base;
A third step of attaching the first front frame to the box;
And a fourth step of attaching a decorative board to the base. A method of manufacturing a distribution board.

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