Board, wiring system, and wiring method

Abstract

To facilitate the installation of a panel.SOLUTION: The distribution board 20 is used together with a gutter space extension member 10 arranged so as to extend from the vicinity of at least one of a floor and a ceiling. The distribution board 20 includes a board main body to which an electric wire wired along the gutter space extension member 10 is connected, and a case 21 that houses the board main body, and the case 21 has an outer peripheral portion 22 that surrounds an outer periphery of the board main body, and an opening portion 23 that is provided in a part of the outer peripheral portion 22 of the case 21 and through which the gutter space extension member 10 can pass in a longitudinal direction of the gutter space extension member 10, and is configured such that the gutter space extension member 10 and the case 21 can be disposed such that a part of the gutter space extension member 10 is housed inside the case 21.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a board that is installed on a wall or the like, for example, and a wiring system and wiring method. [Background technology]

[0002] For example, wiring work for wiring electrical wires to a panel that is installed on a wall or the like is generally carried out in the following steps: First, electrical wires such as lead-in wires and branch wires are routed along the ceiling or floor to the intended installation location of the panel. Next, the panel is installed in the intended installation location. Then, the electrical wires are routed through the installed panel. After that, the electrical wires routed through the panel are connected to the panel itself.

[0003] Incidentally, Patent Document 1 below discloses the structure of an incoming line duct used together with a distribution board. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-41775 Summary of the Invention [Problem to be solved by the invention]

[0005] There has been a demand for a method of installing panels such as distribution boards that can shorten the construction period compared to conventional wiring construction methods.

[0006] An object of the present invention is to provide a panel, a wiring system, and a wiring method that can shorten the installation period. [Means for solving the problem]

[0007] The panel of the first invention is a panel used with a gutter space extension member that is arranged to extend from near at least one of the floor and the ceiling, and comprises a panel body to which electric wires that are routed along the gutter space extension member are connected, and a case that houses the panel body, the case having an outer periphery that surrounds the outer periphery of the panel body and an opening that is provided on part of the outer periphery of the case and through which the gutter space extension member can pass in the longitudinal direction of the gutter space extension member, and is configured so that part of the gutter space extension member is housed inside the case, making it possible to arrange the gutter space extension member and the case.

[0008] With this configuration, the panel can be placed with the electrical wires wired to the gutter space extension member, thereby shortening the construction time required to install the panel.

[0009] In addition, the board of the second invention is a board in which the opening is open on the rear side, unlike the board of the first invention.

[0010] With this configuration, by placing the panel with the electrical wires wired in the gutter space extension member, the electrical wires can be pulled into the interior of the panel, making it easier to carry out work to install the wiring system.

[0011] Furthermore, the board of the third invention differs from the board of the first invention in that the gutter space extension member includes an extension member main body having an open portion along the longitudinal direction, and an upper member arranged on the extension member main body so as to cover the open portion of the extension member main body, and the edge of the opening is formed so as to be close to the outer peripheral surface of the extension member main body when the board and gutter space extension member are arranged.

[0012] This configuration narrows the gap between the case and the gutter space extension member due to the opening, prevents foreign objects from getting inside the case, and improves the design of the wiring system by providing a neater appearance.

[0013] Furthermore, the wiring system of the fourth invention comprises a gutter space extension member arranged to extend from near at least one of the floor and the ceiling and accommodating electric wires, and a panel, the panel comprising a panel body to which the electric wires routed along the gutter space extension member are connected, and a case accommodating the panel body, the case having an outer periphery surrounding the outer periphery of the panel body and an opening provided on part of the outer periphery of the case through which the gutter space extension member can pass in the longitudinal direction of the gutter space extension member, and the gutter space extension member and the case can be arranged so that part of the gutter space extension member is accommodated inside the case.

[0014] With this configuration, the panel can be placed with the electrical wires wired to the gutter space extension member, thereby shortening the construction time required to install the wiring system.

[0015] Furthermore, the wiring method of the fifth invention is a wiring method for wiring electric wires to a panel body using a gutter space extension member that accommodates the electric wires and a panel having a panel body to which the electric wires are connected, wherein an opening through which the gutter space extension member can pass is provided on part of the outer periphery of a case that accommodates the panel, and the wiring method includes the steps of arranging the gutter space extension member so that it extends from near at least one of the floor and the ceiling, accommodating the electric wires in the gutter space extension member, arranging the case so that part of the gutter space extension member passes through the opening, and connecting the electric wires accommodated in the gutter space extension member to the panel body.

[0016] With this configuration, the panel can be placed with the electrical wires wired to the gutter space extension member, thereby shortening the construction time required to install the wiring system. [Effects of the Invention]

[0017] According to the panel of the present invention, the panel can be placed with the electric wires wired to the gutter space extension member, thereby shortening the construction time required to install the wiring system. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a front view of a wiring system including a distribution board according to one embodiment of the present invention; [Figure 2] 1 is a side view of a wiring system according to an embodiment of the present invention; [Figure 3] Cross section of line AA in Figure 1 [Figure 4] 1 is a perspective view of a wiring system according to an embodiment of the present invention; [Figure 5] FIG. 1 is an exploded perspective view of a wiring system according to an embodiment of the present invention. [Figure 6] FIG. 1 is a first diagram illustrating a wiring method using the wiring system according to the present embodiment. [Figure 7] The second diagram explaining the wiring method [Figure 8] The third diagram explaining the wiring method [Figure 9] FIG. 10 is a front view of a wiring system according to a modified example of the present embodiment. [Figure 10] FIG. 10 is a side view of a wiring system according to a modified example of the present embodiment. [Figure 11] FIG. 10 is an exploded perspective view of a wiring system including a distribution board according to a second embodiment of the present invention. [Figure 12] FIG. 10 is a perspective view of a distribution board according to a second embodiment. [Figure 13] FIG. 10 is a perspective view showing a separated state of a distribution board according to a second embodiment. [Figure 14] FIG. 10 is a cross-sectional view illustrating an example of a mounting structure for a distribution board according to a second embodiment of the present invention. [Figure 15] FIG. 10 is a front view illustrating the configuration of a distribution board according to a modification of the second embodiment. [Figure 16] FIG. 10 is a cross-sectional view illustrating an example of the mounting structure of the distribution board. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of a panel etc. will be described with reference to the drawings. Here, the panel refers to a panel for electrical equipment, and specifically, for example, a distribution board, a switchboard, a control panel, etc. may correspond to the panel.

[0020] In the following description, coordinates shown in the drawings are common to all the drawings. The Z direction of the coordinate system is the direction perpendicular to the horizontal plane. The X direction is the direction perpendicular to the Z direction. The Y direction is the direction perpendicular to the Z direction and perpendicular to the X direction. The Z direction is sometimes referred to as the up-down direction (the positive direction on the Z axis when viewed from the origin is up), the Y direction is sometimes referred to as the front-to-back direction (the positive direction on the X axis when viewed from the origin is forward), and the Y direction is sometimes referred to as the left-to-right direction. With respect to a panel, the side that normally faces a user who operates switches, etc. is called the front (front), and the direction that the user faces (the direction from the user toward the panel is sometimes called the back).

[0021] In the following, the shape and positional relationship of each part may be explained by indicating a certain direction, but the specified direction is merely for the convenience of explanation and does not limit the orientation or posture of the board etc. according to the present invention when in use. Furthermore, expressions indicating directions or expressions indicating states such as horizontal, vertical, or orthogonal only indicate that they can be roughly understood as such, and should not necessarily be interpreted strictly as such.

[0022] In the following, a floor refers to, for example, the floor of an indoor room, but is not limited to this. A floor refers to a surface located on the lower side of a space, and is not limited to a substantially horizontal plane; it may also be a sloped surface, a curved surface, or two or more surfaces with slight steps. A ceiling refers to, for example, the ceiling of an indoor room, but is not limited to this. A ceiling refers to a surface located on the upper side of a space, and is not limited to a substantially horizontal plane; it may also be a sloped surface, a curved surface, or two or more surfaces with slight steps. A wall refers to, for example, a wall having a wall surface that divides an indoor room, but is not limited to this. A wall may refer to a surface located above the floor or below the ceiling in a space, extending in a direction different from the floor or ceiling and partitioning part of the space. A wall (wall surface) is not limited to a substantially vertical plane; it may also be a sloped surface, a curved surface, or two or more surfaces with slight steps.

[0023] In the following embodiments, the panel and the wiring system including the panel are disposed in an indoor space having a floor and a ceiling. The wiring system is also disposed along a wall. Disposed along a wall may mean disposed in contact with the wall or disposed slightly away from the wall. Disposed along a wall may include disposed near the wall, or may refer to disposed near the wall, particularly disposed close to the wall. Disposed along a wall may mean that at least some components of the wiring system are supported by the wall.

[0024] However, the wiring system is not limited to this. It may be installed outdoors or in a space facing the outside air. Furthermore, the wiring system is not limited to being installed along a wall. For example, it may be installed so as to stand on the floor or so as to be suspended from the ceiling.

[0025] (Embodiment)

[0026] Fig. 1 is a front view of a wiring system 1 including a distribution board 20 according to an embodiment of the present invention. Fig. 2 is a side view of the wiring system 1 according to the present embodiment. Fig. 3 is a cross-sectional view taken along line AA in Fig. 1. Fig. 4 is a perspective view of the wiring system 1 according to the present embodiment. Fig. 5 is an exploded perspective view of the wiring system 1 according to the present embodiment.

[0027] 3, 4 and 5, for the sake of convenience of explanation, the panel body, electric wires, etc. of the wiring system 1 are not shown, and the details are illustrated in a simplified manner.

[0028] As shown in the figure, the wiring system 1 generally includes a duct 10 (an example of a gutter space extension member) and a distribution board 20 (an example of a board). The distribution board 20 is used together with the duct 10, and together with the duct 10, constitutes the wiring system 1.

[0029] In this embodiment, the duct 10 is disposed between the floor and the ceiling, along the wall 5. The duct 10 is a generally columnar component that extends in the vertical direction. The duct 10 includes, for example, a duct body 11 (an example of an extension member body), an upper member 13, and a support member 15.

[0030] In this embodiment, the duct body 11 is a member that extends linearly in a substantially vertical direction from the floor to the ceiling. As shown in FIG. 3 , the duct body 11 has a channel-like or C-shaped cross section perpendicular to the longitudinal direction. In other words, the duct body 11 has the shape of a rectangular prism-shaped pipe with one front surface missing. The duct body 11 may be said to be a duct having a portion that opens toward the front. Alternatively, the duct body 11 may be said to have a portion that opens along the longitudinal direction. By having such a cross-sectional shape, the duct body 11 can maintain structural strength while forming a space for storing the electric wires 40 therein. The duct body 11 is a columnar member made of metal or resin, but is not limited thereto and can be made of other materials. The duct body 11 may be made of an extruded material, a sheet metal member formed by bending a single plate, or a columnar member formed by combining multiple members. A single duct body 11 may be formed by connecting multiple members that are divided in the longitudinal direction. Furthermore, the portion of the duct body 11 that is open along the longitudinal direction may be open when viewed from a direction other than the direction facing the wall 5, and may be open to either the left or right, for example.

[0031] The upper member 13 is attached to the front of the duct body 11 via a support member 15. The upper member 13 is arranged to straddle the front open portion of the duct body 11 in the left-right direction, i.e., in a direction perpendicular to the longitudinal direction of the duct body 11. In this embodiment, the upper member 13 is a strip-shaped member made of metal or resin, but the material is not important. The upper members 13 are attached to multiple different positions in the longitudinal direction of the duct body 11. The provision of the upper member 13 makes it possible to prevent the electric wires 40 housed inside the duct body 11 from protruding outside the open portion of the duct body 11.

[0032] The support member 15 is, for example, a member provided so as to protrude forward from a part of the duct body 11, and is configured so as to position the upper member 13 in front of the duct body 11 and support the upper member 13 relative to the duct body 11. The support member 15 can be fixed to the duct body 11 by, for example, screwing it, but the fixing method is not limited to this.

[0033] The support member 15 and the upper member 13 can also be provided as a single, integrated member. In this case, the support member 15 and the upper member 13 are molded as a single unit, thereby reducing the number of parts and simplifying assembly.

[0034] In this embodiment, the duct 10 is arranged along the wall 5, but is not limited to this. The duct 10 may also be arranged so that it stands on the floor or the like. The duct 10 can be called, for example, a gutter space extension member, which is a structure for extending the gutter space portion inside the panel as defined by JIS standards, etc., to the ceiling, floor, left and right. The duct 10 in this embodiment may also be called an extended gutter space (or simply a gutter space).

[0035] The distribution board 20 is used together with the duct 10. The distribution board 20 is housed in a case 21 and includes a board body 26 to which electric wires 40 are connected. As will be described later, the electric wires 40 are housed in the distribution board 20 via the duct 10 and routed to a position where they can be connected to the board body 26. The case 21 has an opening 23 in its outer periphery 22, and the duct 10 passes through this opening 23 from the outside to the inside of the case 21.

[0036] The distribution board 20 is also called a slit board (S board), and functions as a part of the wiring system 1. The distribution board 20 is arranged along the wall 5, but is not limited to this and may be arranged freestanding.

[0037] In this embodiment, the distribution board 20 includes a case 21, a case cover 25, a board body 26, a switch 28, and a board cover 29. The distribution board 20 is a box-shaped device having an overall rectangular parallelepiped shape, and is disposed so that its back surface is along the wall 5. However, the shape of the distribution board 20 is not limited to this. The back surface of the distribution board 20 may be entirely open toward the rear. In other words, a member constituting the back surface of the distribution board 20 may or may not be provided.

[0038] Case 21 constitutes a part of the outer surface of distribution board 20. Case 21 is made of, for example, metal. In this embodiment, case 21 has outer periphery 22. Outer periphery 22 is a part perpendicular to the back surface, and in this embodiment, includes both left and right side surfaces, a top surface, and a bottom surface. It can be said that outer periphery 22 is a part that separates the inside and outside of case 21 in a direction parallel to wall surface 5, i.e., a direction parallel to the back surface.

[0039] The front surface of the case 21 is entirely open forward. The case 21 may be formed so as to cover a portion of the front surface. In other words, there may or may not be a portion of the case 21 that constitutes the front surface of the distribution board 20.

[0040] Here, in this embodiment, the case 21 has an opening 23. The opening 23 is provided in a part of the outer circumferential portion 22 of the case 21, and is provided so that the duct 10 can pass through in the longitudinal direction of the duct 10. In this embodiment, the openings 23 are formed on both the top and bottom surfaces of the outer circumferential portion 22. The upper opening 23 and the lower opening 23 are formed in positions that overlap when viewed from the up-down direction. This allows the duct 10 to pass through the case 21 in the up-down direction through the openings 23, and a part of the duct 10 can be positioned inside the case 21.

[0041] As shown in FIG. 3 , in this embodiment, opening 23 is provided on the rear side of case 21, i.e., near wall 5. Opening 23 opens toward the rear. It may be said that opening 23 opens toward the rear side or toward wall 5. Opening 23 is formed by providing outer periphery 22 with two edges 24 extending forward from the rear and one edge 24 extending in the left-right direction at the front end. That is, edge 24 provided on outer periphery 23 to form opening 23 has two portions extending forward from the rear of case 21 and a portion connecting these two portions forward of the rear. In other words, in this embodiment, opening 23 is formed as a U-shaped (channel-shaped) opening 23 that opens in a direction different from the longitudinal direction of duct 10.

[0042] In this embodiment, edge 24 of opening 23 is formed so as to be close to the outer peripheral surface of duct body 11 when distribution board 20 and duct 10 are arranged. That is, the gap between edge 24 and the outer peripheral surface of duct body 11 is relatively narrow. In other words, when duct body 11 and case 21 are both provided along planar wall 5 as in this embodiment, the shape of opening 23 only needs to be slightly larger than the cross-sectional shape perpendicular to the longitudinal direction of duct body 11. Since the gap created by providing opening 23 is narrow in this manner, it is possible to prevent foreign matter from entering the interior of case 21 through the gap.

[0043] In this embodiment, case cover 25 is arranged to cover the front of case 21 in front of duct 10 (in front of the gutter space). Case cover 25 may be provided to cover another part of the front of case 21. Case cover 25 may also be provided to cover the entire front of case 21. By providing case cover 25, the inside of case 21 can be protected.

[0044] Panel body 26 is housed inside case 21. It can be said that outer peripheral portion 22 is formed to surround the outer periphery of panel body 26 when viewed from the front. In this embodiment, panel body 26 is positioned inside case 21 so as to be adjacent to the area where duct 10 is located, i.e., the gutter space.

[0045] Switches 28 such as relays and breakers, as well as other elements for realizing the functions of the distribution board 20, are arranged on the panel body 26. Electric wires 40 are connected to the panel body 26. A panel cover 29 is arranged in front of the panel body 26 so as to cover the panel body 26. The panel cover 29 is configured so that some of the switches 28 are exposed to the front so that they can be operated from the front side. This allows general users to safely operate the switches 28 as needed.

[0046] In this embodiment, electric wires 40 are drawn into distribution board 20 from the ceiling or floor. Electric wires 40 are housed in duct main body 11 and run from the ceiling or floor toward distribution board 20, then pass through opening 23 together with duct main body 11 and are routed inside case 21. Inside case 21, electric wires 40 are connected to board main body 26.

[0047] Next, we will explain an example of a method for installing the wiring system 1 configured as above, i.e., a wiring method. The wiring method can be said to be a method for wiring the electric wires 40 to the panel body 26 using the duct 10 that houses the electric wires 40 and the distribution board 20 that has the panel body 26 to which the electric wires 40 are connected.

[0048] Fig. 6 is a first diagram illustrating a wiring method using the wiring system 1 in this embodiment, Fig. 7 is a second diagram illustrating the wiring method, and Fig. 8 is a third diagram illustrating the wiring method.

[0049] 6, first, the duct 10 is arranged so as to extend from the vicinity of at least one of the floor and the ceiling (step S11; duct installation step). In this embodiment, the duct body 11 is arranged so as to extend in the vertical direction between the floor and the ceiling. The duct body 11 is arranged so as to follow the wall 5.

[0050] Next, as shown in FIG. 7 , the electric wires 40 are housed in the duct 10 arranged along the wall 5 (step S12; wiring insertion step). For example, the electric wires 40 laid along the floor or the ceiling are housed inside the duct main body 11 and laid to the vicinity of the position where the distribution board 20 is to be installed. Here, for example, the electric wires 40 laid from the floor are drawn through the inside of the duct main body 11, using the position where the top surface of the distribution board 20 is located (the top surface of the board) as a guide. Furthermore, the electric wires 40 laid from the ceiling are drawn through the inside of the duct main body 11, using the position where the bottom surface of the distribution board 20 is located as a guide. In this way, each electric wire 40 only needs to be drawn in using the length until it reaches a predetermined position in the duct 10 as a guide. Therefore, the drawing length of the electric wires 40 can be easily determined and the drawing work can be performed while preventing the drawn-in length of the electric wires 40 from being too short or too long.

[0051] 8, the case 21 is placed so that a portion of the duct 10 passes through the opening 23 (step S13; panel mounting step). In this embodiment, the openings 23 are formed on the top and bottom surfaces of the case 21 so as to open toward the rear. Therefore, this operation can be easily performed by fitting the duct body 11 into the opening 23 and then moving the case 21 from the front to the rear and mounting it on the wall 5.

[0052] With the case 21 positioned in this manner, the duct 10 and the wires 40 housed therein are pulled into the gutter space inside the case 21. Then, the panel body 26 is attached to the inside of the case 21, and the wires 40 housed in the duct 10, i.e., the wires 40 in the gutter space, are connected to the panel body 26 (connection step).

[0053] Once the work of connecting the electric wires 40 to the panel body 26 is completed, other components, such as the case cover 25, the panel cover 29, and, if necessary, the upper component 13, etc., can be attached to create the state shown in Figure 1.

[0054] As described above, this embodiment has the following advantages.

[0055] That is, conventional wiring work using common methods had the following problems. When wiring the electric wires to the intended installation location, it was necessary to make the length of the electric wires to the intended installation location of the panel longer so that subsequent work could be carried out reliably. This resulted in the problem of excess electric wires that were longer than the length necessary to connect to the panel itself, resulting in a relatively large amount of waste. Furthermore, there were problems in that the work of running the electric wires that had been run to the intended installation location of the panel through the panel took time, and the electric wires got in the way while the wires were being run through the panel, making it difficult to carry out the work efficiently.

[0056] To address this problem, the present embodiment uses the wiring system 1 to facilitate the wiring of the electric wires 40. Specifically, the duct 10 is installed in advance along the route along which the electric wires 40 will be routed, thereby extending the gutter space. The electric wires 40 can then be routed close to the planned installation location of the distribution board 20 so that the electric wires 40 are housed in the duct 10. This prevents the electric wires 40 from being wasted and getting in the way. Furthermore, by installing the distribution board 20 so that the duct 10 passes through the opening 23 after the electric wires 40 have been routed through the duct 10, the installation of the distribution board 20 and the installation of the electric wires 40 into the case 21 can be performed simultaneously. In other words, the gutter space can be secured in advance, allowing the electric wires 40 to be routed first. Therefore, the wiring work using the wiring system 1 can be performed efficiently, reducing the number of steps required to install the distribution board 20 compared to conventional methods.

[0057] In particular, in this embodiment, opening 23 is open to the rear of case 21, so that distribution board 20 can be installed by the simple task of simply moving case 21 from the front to the rear relative to duct 10. Therefore, the number of steps required to install distribution board 20 can be significantly reduced compared to the conventional method.

[0058] The above embodiment may be modified as follows.

[0059] Fig. 9 is a front view of a wiring system 201 according to a modification of the present embodiment. Fig. 10 is a side view of wiring systems 201, 301, and 401 according to modifications of the present embodiment.

[0060] A wiring system 201 according to this modification differs from the wiring system 1 according to the above embodiment in that the duct 10 has an upper member 213 and the distribution board 20 has a case cover 25 that covers the entire front surface of the case 21. The other configurations are the same as those of the above embodiment.

[0061] As shown in the figure, the upper member 213 is disposed on the duct body 11 so as to cover the open portion of the duct body 11. The upper member 213 may also be called a gutter space cover or a duct cover. The upper member 213 is supported by a plurality of support members 15 arranged in a line in the longitudinal direction of the duct body 11, as in the above-described embodiment, and is fixed to the duct body 11. Note that the method for fixing the upper member 213 is not limited to this; for example, the duct body 11 and the upper member 213 may each be provided with an engaging portion and an engaged portion that engage with each other, thereby attaching the upper member 213 to the duct body 11.

[0062] Since the open portion of duct body 11 is covered by upper member 213, it is possible to prevent external impacts and the intrusion of foreign objects after electric wires 40 have been housed. Furthermore, since upper member 213 prevents electric wires 40 from being exposed to the outside, it is possible to give wiring system 201 a neat and tidy appearance.

[0063] 10 , in the present embodiment, the duct 10 and the distribution board 20 may be installed with portions thereof embedded behind the wall 5. For example, the wiring system 301 is a semi-embedded type in which the duct 10 and a portion of the distribution board 20 are embedded behind the surface of the wall 5. For example, the wiring system 401 is a fully embedded type in which the duct 10 and the case 21 of the distribution board 20 are embedded behind the surface of the wall 5. Even when the wiring systems 301 and 401 are installed partially or entirely embedded in the wall 5, they can still be said to be arranged along the wall 5. Even in this case, the opening 23 is provided in accordance with the positional relationship between the duct 10 and the case 21 regardless of the position of the wall 5, thereby providing the advantage of reducing the number of steps required to install the distribution board 20, as in the above-described embodiment.

[0064] (Embodiment 2)

[0065] The embodiment described above will be referred to as embodiment 1 below. Embodiment 2 of the present invention will be described below with reference to the drawings. Embodiment 2 differs from embodiment 1 above in the configuration of the distribution board case. Since the other configurations are the same as embodiment 1 above, the same components are given the same reference numerals and their description will be omitted.

[0066] Fig. 11 is an exploded perspective view of a wiring system 1001 including a distribution board 1020 according to the second embodiment of the present invention. Fig. 12 is a perspective view of the distribution board 1020 according to the second embodiment.

[0067] In the second embodiment as well, for the sake of convenience of explanation, illustrations of the panel body, electric wires, etc. of the wiring system 1001 may be omitted. Furthermore, detailed structures are illustrated in an appropriately simplified manner.

[0068] The case 1021 of the distribution board 1020 is formed to surround and house the board main body (not shown) inside, similar to the case 21 according to the first embodiment described above. The case 1021 is formed in a box shape with an opening at least on the front side, but is not limited to this. Similar to the case 21, the case 1021 of the distribution board 1020 is provided with an opening 23 through which the duct 10 can pass. In other words, the distribution board 1020 can basically be used in the same procedures and methods as those of the first embodiment described above.

[0069] The case 1021 has a bottom 1121 that covers the back side of the area where the duct 10 is not disposed, i.e., the area where the opening 23 is not formed. The distribution board 1020 can be disposed so that the bottom 1121 is along the wall surface, but the method of disposing it is not limited to this. In addition, the bottom 1121 does not have to be provided.

[0070] The case 1021 has a portion roughly formed by combining a first frame 1022 and a second frame 1222 together.

[0071] The first frame 1022 is disposed adjacent to the duct 10 when viewed from the front. The outer periphery of the first frame 1022 is configured to be rectangular with no side on the duct 10 side when viewed from the front, i.e., to be U-shaped (which may also be called a C-shape or a U-shape) that opens toward the duct 10. The first frame 1022 is configured to surround at least a portion of the outer periphery of the panel main body. In the second embodiment, the first frame 1022 may be said to have an outer periphery formed to surround three sides (top, left, and bottom) of the panel main body. The outer periphery of the first frame 1022 may be said to have an upper surface portion and a lower surface portion that extend substantially horizontally from the duct 10, and a left side surface portion that connects the upper surface portion and the lower surface portion.

[0072] The second frame 1222 is disposed so as to cover at least a portion of the area where the duct 10 is located when viewed from the front. That is, the second frame 1222 is disposed so as to cover at least a portion of the duct 10 when viewed from the side where the electric wires 40 are housed in the duct. When viewed from the front, the outer periphery of the second frame 1222 is configured as a rectangle with one side missing on the first frame 1022 side, i.e., a U-shape opening toward the first frame 1022. It can be said that the upper and lower surfaces of the outer periphery of the second frame 1222 are portions excluding the opening 23. It can be said that the outer periphery of the second frame 1222 has upper and lower surfaces that are located in the area excluding the opening 23 through which the duct 10 passes, and a right side surface that connects the upper and lower surfaces. It can be said that the second frame 1222 has one or more portions that are disposed so as to straddle the electric wires 40 housed in the duct 10. Being arranged so as to straddle the electric wires 40 housed in the duct 10 may also be said to be being arranged so as to straddle the duct 10.

[0073] In the second embodiment, the upper surface of the second frame 1222 is L-shaped when viewed from above. The upper surface of the first frame 1022 is adjacent to the left side surface of the duct 10. That is, the opening 23 provided in the upper surface of the second frame 1222 is defined by an edge 24 of the second frame 1222 in front of the duct 10, an edge 24 of the second frame 1222 adjacent to the right side surface of the duct 10, and an edge 24 of the first frame 1022 adjacent to the left side surface of the duct 10. Similarly, when the lower part of the distribution board 1020 is viewed from below, the opening 23 is defined by one edge of the first frame 1022 and two edges of the second frame 1222.

[0074] FIG. 13 is a perspective view showing a separated state of the distribution board 1020 according to the second embodiment.

[0075] The first frame 1022 and the second frame 1222 are configured so that their upper surfaces and lower surfaces overlap in the front-to-rear direction. A connecting portion 1422 on the first frame 1022 side and a connecting portion 1522 on the second frame 1222 side are formed at these locations. The first frame 1022 and the second frame 1222 are joined together to form a single case 1022 by attaching connecting members 1322 to the upper and lower connecting portions 1422, 1522, respectively. As shown in FIG. 13 , the first frame 1022 and the second frame 1222 can be separated from each other (separated state) by releasing (e.g., removing) the two upper and lower connecting members 1322.

[0076] In the second embodiment, the connecting member 1322 is a screw, the connecting portion 1422 is a threaded hole, and the connecting portion 1522 is a through-hole. The screw is threaded through the through-hole on the second frame 1222 side and into the threaded hole on the first frame 1022 side, thereby connecting the first frame 1022 and the second frame 1222. The specific configuration of the connecting means is not limited to this, and for example, a structure in which the connecting portions provided on the first frame 1022 and the second frame 1222 are connected to each other using fasteners with other snap structures may be employed. In other words, it is sufficient to use a structure in which the connecting portions of the first frame 1022 and the second frame 1222 are releasably connected to each other by a connecting member (which may be part of the first frame 1022 or the second frame 1222 itself).

[0077] In the second embodiment, a cover 1025 is removably attached to the front side of the second frame 1222. The second frame 1222 is disposed on the front side of the duct 10, and the cover 1025 is disposed so as to cover the front side of the duct 10. By attaching the cover 1025, the electric wires 40 and the like that are wired from the inside of the duct 10 to the panel body are not exposed from the inside of the distribution board 1020 to the outside. Note that, when necessary, the cover 1025 can be removed to perform work on the electric wires 40.

[0078] The cover 1025 is, for example, a flat plate-shaped member. The cover 1025 is fixed to the second frame 1222 by fastening fixing screws 1026 to threaded holes in connecting portions 1422 formed in the second frame 1222. Note that the method for fixing the cover 1025 is not limited to this. For example, the cover 1025 may be connected to the second frame 1222 via a rotating shaft and configured to form a door that can be opened and closed to cover or open the front side of the second frame 1222.

[0079] In the second embodiment, cover 1025 has a rectangular shape overall that matches the shape of second frame 1222, but notches 1325 are formed at the two upper and lower locations where coupling member 1322 is coupled so as not to cover coupling portion 1522. In other words, with cover 1025 fixed to second frame 1222, coupling member 1322 can be used to couple first frame 1022 and second frame 1222 together, or the coupling can be released to separate the two. This allows installation of distribution board 1020, other wiring work, maintenance work, and the like, to be performed in a variety of ways.

[0080] As described above, according to the second embodiment, the case 1021 of the distribution board 1020 is composed of a separable first frame 1022 and a second frame 1222. As a result, when installing the distribution board 1020, a large opening can be formed on the side of the case 1021, and workers can use this opening to easily perform work such as connecting the electric wires 40 to the board body 26 while ensuring a large working space. Since the installation work of the distribution board 1020 per location is shortened, the total number of days required to use the resources of electrical workers can be reduced, thereby shortening the construction period.

[0081] For example, when installing the distribution board 1020, a worker can take the following steps. First, with the first frame 1022 and the second frame 1222 coupled together, the worker installs the distribution board 1020 over the duct 10, inside which the electric wires 40 have been wired in advance. Next, as shown in FIG. 13 , the first frame 1022 and the second frame 1222 are separated, and the second frame 1222 is removed while leaving the first frame 1022 in place, exposing the duct 10. Then, the electric wires 40 wired in the duct 10 are connected to the board main body 26. When the work is completed, the second frame 1222 is placed over the duct 10, and the first frame 1022 and the second frame 1222 are coupled together, returning to the state shown in FIG. 12 .

[0082] In the structure of the first embodiment, because the case 21 has an integral structure, the working space when pulling the electric wires 40 into the case 21 is narrow. This problem can be particularly pronounced when it is necessary to route a thick trunk cable. Furthermore, for example, if the electric wires 40 that have been wired in the duct 10 in advance are too long, after the case 21 is attached from above the duct 10, the ends of the electric wires 40 must be passed through the opening 23 to be pulled into the case 21, which can make the wiring work complicated.

[0083] In contrast, in the structure of the second embodiment, as described above, the first frame 1022 and the second frame 1222 can be separated, and members that obstruct the work of routing the electric wires 40 wired along the duct 10 to the panel main body 26 can be removed. This makes it easier to route thick trunk cables or excessively long electric wires 40, greatly improving the degree of freedom in wiring work and dramatically improving work efficiency. In addition, it also becomes possible to pull out the electric wires 40 to be routed in the duct 10 to the side of the panel and lay them down in advance, thereby achieving a significant improvement in workability.

[0084] (others)

[0085] FIG. 14 is a cross-sectional view illustrating an example of an attachment structure of a distribution board 1020 according to the second embodiment of the present invention.

[0086] 14 shows a cross section of the peripheral portion of duct 10 of wiring system 1001 in a plane near joint 1522 that is perpendicular to the longitudinal direction of duct 10. Cover 1025 and the like are omitted from the illustration in FIG. 14, and the contents shown in the illustration may be considered to be schematic.

[0087] The distribution board 1020 can be attached to the wall 5 by, for example, screwing, but the attachment structure of the distribution board 1020 is not limited to this. For example, as shown in Fig. 14, the case 1021 may be pressed against the wall 5 by a fixing bracket 1012 fixed to a part of the duct 10. This reduces the amount of damage to the wall 5 in areas other than the duct 10, and also makes it easy to remove and replace the distribution board 1020.

[0088] The fixing brackets 1012 shown in the figures are fixed, for example, to each of the left and right sides of the duct 10 so as to press a portion of the case 1021 from the front side toward the rear. As described above, the case 1021 is separable into the first frame 1022 and the second frame 1222, and the fixing brackets 1012 are provided so as to act on each of the first frame 1022 and the second frame 1222. When the distribution board 1020 is installed, the second frame 1222 can be easily separated from the first frame 1022 by removing the fixing brackets 1012 that engage with the second frame 1222 and removing the connecting member 1322.

[0089] In addition to this structure, the case 1021 may be configured to engage with a part of the duct 10.

[0090] The present invention is not limited to the above-described embodiment, and various modifications are possible, and these modifications are also included within the scope of the present invention.

[0091] The present invention is not limited to the configurations of the above-described embodiments, and the components of the above-described embodiments and modified examples may be replaced with components of other embodiments as appropriate. Furthermore, some components of the above-described embodiments and modified examples may be omitted. For example, upper members, panel covers, etc. may not be provided. Furthermore, the wiring system is not limited to distribution boards, and may use boards having a panel body to which electric wires are connected, such as switchboards and control panels.

[0092] In each of the above-described embodiments, the duct is arranged to extend vertically from the ceiling to the floor, but this is not limited thereto. The duct may be arranged to extend vertically from the floor or near the ceiling. That is, the wiring system may include a duct arranged to extend from near at least one of the floor and the ceiling, and a panel, and an opening is provided in the case of the panel so that a portion of the duct can be housed inside the case, allowing the duct and the case to be arranged.

[0093] Furthermore, as described above, the duct serves as a gutter space, and the location of the opening in the case, i.e., the location of the gutter space, can be appropriately determined depending on the number and layout of the panel bodies. For example, when one panel body is provided as in the above-mentioned first embodiment, the position of the opening can be determined so that the gutter space is provided on the side of the four sides (top, bottom, left, right) of the case that makes it easier to connect the electric wires to the panel body. Furthermore, when two panel bodies are provided, i.e., in the case of a two-connected panel, the gutter space can be located in the center of the connection.

[0094] Fig. 15 is a front view illustrating the configuration of a distribution board 2020 according to a modification of the above-described embodiment 2. Fig. 16 is a cross-sectional view illustrating an example of an attachment structure of the distribution board 2020.

[0095] In FIG. 16, the mounting structure is shown schematically in the same manner as in FIG.

[0096] The distribution board 2020 according to this modification is the two-connected board described above. The panel bodies 26 according to the first embodiment described above are arranged on the left and right sides of the duct 10, i.e., the gutter space. The case 2021 of the distribution board 2020 is composed of two first frames 1022, each accommodating a panel body 26 on the left and right sides, and a second frame 2222 connecting the two first frames 1021 together. Because the first frames 1022 are U-shaped, two second frames 2222 are used to connect the upper parts and lower parts of the first frames 1022 together, respectively. Each second frame 2222 is, for example, a member extending in the left-right direction and is arranged to straddle the electric wires 40 accommodated in the duct 10. In other words, each second frame 2222 is arranged to straddle the duct 10.

[0097] As shown in FIG. 16, even in such a two-connected distribution board 2020, the case 2021 may be fixed to the wall 5 using a fixing bracket 1012 that is fixed to the duct 10.

[0098] The second frames 2222 are respectively connected to the connecting portions 1422 of the first frames 1022 by connecting members 1322. With the distribution board 2020 in place, the connecting members 1322 can be removed to separate the second frames 2222 from the first frames 1022. Therefore, the same effects as those of the second embodiment can be obtained. [Industrial Applicability]

[0099] As described above, the panel of the present invention can be placed with the electric wires passing through the gutter space extension member, which has the effect of shortening the construction time for installing the wiring system, and is useful as a panel, etc.

[0100] (Addendum) In the panel according to the above invention, the case includes a first frame that surrounds at least a portion of the outer periphery of the panel body, and a second frame that is arranged to cover at least a portion of the area where the gutter space extension member is located when viewed from the front, and the first frame and the second frame are detachably connected via a connecting member and may be separated from each other by releasing the connecting member. With this configuration, the side of the panel can be widely opened during wiring work, ensuring sufficient working space and significantly improving the efficiency of wiring work. The opening may be defined by an edge of the first frame and an edge of the second frame, which allows wiring to be easily performed when the first frame and the second frame are separated. The second frame may also be provided with a detachable cover that covers the front side of the second frame, and the cover may be located in a position that avoids the joint between the first frame and the second frame so that the first frame and the second frame can be joined and separated with the cover attached. With this configuration, the frames can be joined and separated with the cover attached, increasing the flexibility of the work procedure and improving overall work efficiency. Furthermore, with regard to the above-described wiring method, the case may be configured such that a first frame surrounding at least a portion of the outer periphery of the panel body and a second frame arranged to cover at least a portion of the area where the gutter space extension member is located when viewed from the front are detachably connected via a connecting member, and the case can be separated from the first frame by releasing the connecting member, and the wiring method may include, after the step of placing the case, a step of separating the second frame from the first frame by releasing the connecting member, a step of connecting the electric wires housed in the gutter space extension member to the panel body with the second frame separated from the first frame, and a step of connecting the second frame to the first frame with the electric wires connected to the panel body. With this configuration, the side of the panel can be widely opened during wiring work, ensuring ample work space and facilitating the routing of thick electric wires, thereby significantly improving the efficiency of the wiring work. [Explanation of symbols]

[0101] 1,1001 Wiring System 5. Wall 10 Duct (an example of a gutter space extension component) 11 Duct body (example of extension member body) 13,213 Upper member 15 Support member 20,1020,2020 Distribution board (example of a panel) 21,1021,2021 cases 22 Outer periphery 23 Opening 24 Edge 25 Case Cover 26 Disc body 28 Switch 29 Record Cover 40 Electric wire 1012 Fixing bracket 1022 First Frame 1025 Cover 1121 Bottom 1222,2222 Second frame 1322 Connecting member 1325 Notch 1422,1522 Joint

Claims

1. A board used with a gutter space extension member arranged to extend from near at least one of the floor and the ceiling, a panel body to which electric wires routed along the gutter space extension member are connected; a case that houses the panel body, The case is an outer periphery surrounding the outer periphery of the panel body; an opening provided in a part of the outer periphery of the case, through which the gutter space extension member can pass in the longitudinal direction of the gutter space extension member; A panel configured so that the gutter space extension member and the case can be arranged with a portion of the gutter space extension member housed inside the case.

2. The panel according to claim 1 , wherein the opening is open toward the rear.

3. The gutter space extension member is an extension member body having an open portion along a longitudinal direction; an upper member disposed on the extension member body so as to cover the open portion of the extension member body; The panel according to claim 1 , wherein an edge of the opening is formed so as to be close to an outer circumferential surface of the extension member body when the panel and the gutter space extension member are arranged.

4. The case is a first frame surrounding at least a portion of the outer periphery of the panel body; a second frame arranged to cover at least a portion of the area in which the gutter space extension member is located when viewed from the front; The panel according to claim 1 , wherein the first frame and the second frame are detachably connected via a connecting member, and can be separated from each other by releasing the connecting member.

5. The panel of claim 4 , wherein the opening is defined by an edge of the first frame and an edge of the second frame.

6. The panel according to claim 4, wherein the second frame is provided with a detachable cover that covers the front side of the second frame, and the cover is positioned in a portion that avoids the joint between the first frame and the second frame so that the first frame and the second frame can be joined and separated with the cover attached.

7. a gutter space extension member disposed so as to extend from near at least one of the floor and the ceiling and accommodating electric wires; It is equipped with a board, The board is: a panel body to which the electric wires routed along the gutter space extension member are connected; a case that houses the panel body, The case is an outer periphery surrounding the outer periphery of the panel body; an opening provided in a part of the outer periphery of the case, through which the gutter space extension member can pass in the longitudinal direction of the gutter space extension member; A wiring system in which the gutter space extension member and the case can be arranged so that a portion of the gutter space extension member is housed inside the case.

8. A wiring method for wiring an electric wire to a panel body using a gutter space extension member that accommodates the electric wire and a panel having a panel body to which the electric wire is connected, comprising: an opening through which the gutter space extension member can pass is provided in a part of the outer periphery of the case that accommodates the board; positioning the gutter space extension member to extend from near at least one of the floor and the ceiling; storing electrical wires in the gutter space extension member; positioning the case such that a portion of the gutter space extension member extends through the opening; and connecting the electric wires housed in the gutter space extension member to the panel body.

9. The case is configured such that a first frame surrounding at least a portion of the outer periphery of the panel body and a second frame arranged to cover at least a portion of the area in which the gutter space extension member is located when viewed from the front are detachably connected via a connecting member, and the first frame and second frame can be separated from each other by releasing the connecting member; After the step of placing the case, separating the second frame from the first frame by releasing the connecting member; connecting the electric wires housed in the gutter space extension member to the panel main body while separating the second frame from the first frame; The wiring method according to claim 8, further comprising: coupling the second frame to the first frame in a state in which the electric wires are connected to the panel body.

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