JP7808502B2 - Cases and distribution boards - Google Patents

Description

The present invention relates to a case and a distribution board.

Patent Document 1 discloses a distribution board in which the main body cover (cover) can be attached and detached to the base (base).

JP 2016-189638 A

Distribution boards have conductive parts called terminal bars located inside them. These conductive parts are covered with insulating covers to prevent electric shock, etc. However, the insulating covers do not have holes formed to prevent tracking caused by the accumulation of dust and other particles on the conductive parts, making it difficult to effectively dissipate heat from the conductive parts. Furthermore, forming holes through the insulating cover to improve heat dissipation reduces the tracking prevention function. Furthermore, Patent Document 1 does not disclose any technology for improving heat dissipation while suppressing a decrease in tracking prevention function. In other words, with conventional technology, it is difficult to improve heat dissipation while suppressing a decrease in tracking prevention function.

The present invention therefore provides a case and distribution board that can improve heat dissipation while preventing a decline in tracking prevention functionality.

A case according to one aspect of the present invention comprises a base to which a main breaker, branch breakers, and conductive parts are fixed, a cover that covers the base, and a wall portion that protrudes from the base toward the cover. The wall portion has communication holes that connect the spaces above and below the wall portion, and covers the conductive parts from above when the main breaker, branch breakers, and conductive parts are fixed to the base.

A distribution board according to one aspect of the present invention comprises the above-described case, a main breaker, branch breakers, and a conductive part fixed to the case.

One aspect of the present invention makes it possible to realize a case and distribution board that can improve heat dissipation while suppressing a decline in anti-tracking functionality.

FIG. 1 is a perspective view showing the appearance of a distribution board according to an embodiment. FIG. 2 is an exploded perspective view showing the configuration of the distribution board according to the embodiment. FIG. 3 is a cross-sectional view showing the wall portion taken along line III-III shown in FIG. FIG. 4 is an exploded perspective view showing the configuration of a distribution board according to a modified example of the embodiment. FIG. 5 is an enlarged perspective view of a wall portion according to a modification of the embodiment. FIG. 6 is a cross-sectional perspective view showing the wall portion when cut along the line VI-VI shown in FIG. 7 is a cross-sectional view showing a distribution board according to a modified example of the embodiment when cut along a cutting line corresponding to line VII-VII shown in FIG.

The following describes the embodiments in detail, with reference to the drawings.

The embodiments and the like described below are all comprehensive or specific examples. The numerical values, shapes, components, component placement and connection configurations, etc. shown in the following embodiments and the like are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components that are not recited in the independent claims are described as optional components.

Furthermore, each figure is a schematic diagram and is not necessarily an exact representation. Therefore, for example, the scales and other details do not necessarily match between the figures. Furthermore, in each figure, substantially identical components are assigned the same reference numerals, and redundant explanations are omitted or simplified.

In this specification and drawings, the X-axis, Y-axis, and Z-axis represent the three axes of a three-dimensional Cartesian coordinate system. In the embodiments, the X-axis direction is the thickness direction of the distribution board (the stacking direction of the components). In this specification, "front view" means viewing the distribution board along the X-axis direction (thickness direction of the distribution board), and "plan view" means viewing the distribution board along the Z-axis direction. The Y-axis direction is the left-right direction (e.g., horizontal direction) when the distribution board is attached to a construction material, the Z-axis direction is the up-down direction (e.g., vertical direction) when the distribution board is attached to a construction material, and the X-axis direction is the front-to-back direction when the distribution board is attached to a construction material, but this is not intended to be limiting.

In addition, in this specification, terms indicating the relationship between elements, such as parallel and the same, terms indicating the shape of elements, such as rectangle and trapezoid, as well as numerical values and numerical ranges, are not expressions that express only the strict meaning, but also expressions that include a substantially equivalent range, for example, a difference of about a few percent (e.g., about 10%).

(Embodiment)
[1. Distribution board configuration]
The configuration of a distribution board according to this embodiment will be described with reference to Figures 1 to 3. Figure 1 is a perspective view showing the appearance of a distribution board 1 according to this embodiment. Figure 2 is an exploded perspective view showing the configuration of the distribution board 1 according to this embodiment.

The distribution board 1 receives power (grid power) from a power grid, which is a facility operated by an electric power company or the like, and branches that power into multiple branch circuits. The distribution board 1 is installed inside facilities that use electricity, such as homes, hospitals, factories, and buildings.

As shown in Figures 1 and 2, the distribution board 1 includes a base 10, a terminal bar 30, a holding member 31, a main breaker 40, branch breakers 50, a cover 60, and a door 70. The base 10 and the cover 60 form the case (distribution board box) of the distribution board 1. The terminal bar 30, holding member 31, main breaker 40, and branch breakers 50 are stored within the case. In this embodiment, the case is box-shaped and can store the terminal bar 30, holding member 31, main breaker 40, and branch breakers 50 inside.

The base 10 is a plate-shaped member to which the terminal bar 30, holding member 31, main breaker 40, and branch breaker 50 are fixed. The shape of the base 10 when viewed from the front is, for example, rectangular.

The base 10 is attached to a construction material. For example, the base 10 is attached directly to the construction material. For example, the base 10 may be attached in contact with a wall (e.g., plasterboard). The base 10 has an attachment portion 10a and a wall portion 20.

The mounting portion 10a is a portion for detachably mounting the holding member 31 that holds the terminal bar 30. The mounting portion 10a is configured, for example, with an opening to which the holding member 31 is attached (e.g., hooked), a protrusion that engages with the holding member 31, etc. The mounting portion 10a may also be, for example, a crank-shaped rail. The mounting portion 10a may also be, for example, a din rail.

Note that "detachable" means that the holding member 31 that holds the terminal bar 30 can be attached and detached to the mounting portion 10a without using fastening members such as screws. Note that the mounting portion 10a may also have a configuration that allows for the attachment and detachment of an internal unit that integrates the terminal bar 30, holding member 31, main breaker 40, and branch breaker 50.

The wall portion 20 is a plate-shaped member disposed above the terminal bar 30 to prevent electric shock from the conductive terminal bar 30 and to prevent tracking due to the accumulation of dust and other particles on the terminal bar 30. The wall portion 20 protrudes from the base 10 toward the cover 60 (the positive direction of the X-axis). The wall portion 20 is, for example, provided upright on the base 10. When the terminal bar 30, main breaker 40, and branch breaker 50 are fixed to the base 10, the wall portion 20 covers the terminal bar 30 from above (the positive side of the Z-axis). The wall portion 20 is disposed above the mounting portion 10a, and in this embodiment, is disposed on the positive side of the Y-axis and the positive side of the Z-axis of the base 10. The wall portion 20 is, for example, formed integrally with the base 10. This reduces the number of parts in the distribution board 1 and eliminates the installation work required when the wall portion 20 is separate from the base 10, thereby reducing the cost of the distribution board 1. The wall portion 20 may be a separate member from the base 10. In other words, the wall portion 20 may be detachably attached to the base 10.

The wall portion 20 is elongated in the Y-axis direction, for example. Furthermore, the length L1 of the wall portion 20 in the X-axis direction is, for example, equal to or greater than the length L2 of the terminal bar 30 in the X-axis direction. For example, in a plan view (here, when the terminal bar 30 is viewed from the wall portion 20 side) with the terminal bar 30, main breaker 40, and branch breaker 50 fixed, the terminal bar 30 is hidden by the wall portion 20 and cannot be seen. This effectively prevents dust and other particles from accumulating on the terminal bar 30. The cross-sectional shape of the wall portion 20 will be described later with reference to Figure 3.

The base 10 and the wall 20 are formed, for example, from an electrically insulating material. For example, the base 10 and the wall 20 are integrally formed from resin. The base 10 and the wall 20 are, for example, molded products (e.g., resin molded products). The resin forming the base 10 and the wall 20 may be the same as the resin forming the cover 60. The resin is, for example, polyethylene resin, but is not limited to this, and other resins may also be used. At least a portion of the base 10 may be formed from metal.

The base 10 also has an opening through which the power lines connected to the main breaker 40 are inserted, and an opening through which the power lines connected to the branch breaker 50 are inserted.

The terminal bar 30 is a plate-shaped conductive member used to connect the main breaker 40 and the branch breakers 50. The distribution board 1 is connected to a commercial power source, and is configured so that the commercial power source supplies power to each branch breaker 50 via the main breaker 40 and terminal bar 30.

The terminal bar 30 is made of a conductive material such as copper. Furthermore, the terminal bar 30 is not covered with an insulating material, and the conductive portion is exposed. This is why the wall portion 20 is provided. The terminal bar 30 is also referred to as a bus bar or conductive bar. The terminal bar 30 is an example of a conductive portion.

For example, no other components are placed between the terminal bar 30 and the wall portion 20.

The holding member 31 is a long member that holds the terminal bar 30. The holding member 31 is fixed to the mounting portion 10a of the base 10 while holding the terminal bar 30. The holding member 31 is made of, for example, an insulating material. The holding member 31 may also be made of resin.

The main breaker 40 is a breaker that stops the supply of power from the power grid when a current exceeding a predetermined current (for example, a current based on the power specified in a contract with the power company) flows from the power grid.

The branch breaker 50 is a breaker provided for each power line (branch circuit) connected to the distribution board 1. Multiple branch breakers 50 are provided. If an overcurrent flows through a power line connected to the branch breaker 50, the branch breaker 50 stops the supply of power to that power line.

The distribution board 1 only needs to be equipped with at least one of a main breaker 40 and a branch breaker 50. In this case, at least one of the main breaker 40 and the branch breaker 50 is attached to the base 10.

The cover 60 is a member that covers the base 10. The cover 60 has a front panel, a top panel formed to surround the periphery of the front panel, a pair of side panels, and a bottom panel.

The door 70 is rotatably attached to the front panel of the cover 60 and opens and closes an opening formed in the front panel of the cover 60. The door 70 covers the opening and is attached to the cover 60 so that it can rotate around the Y-axis direction. The operating parts (e.g., handles) of the main breaker 40 and branch breakers 50 are located in the opening. In other words, the door 70 covers the operating parts of the main breaker 40 and branch breakers 50. Opening and closing the door 70 switches between an open state in which the operating parts of the main breaker 40 and branch breakers 50 are exposed, and a closed state in which the operating parts are not exposed. The door 70 may also cover a display that shows the status of the main breaker 40 and branch breakers 50. The door 70 has a rectangular shape when viewed from the front, for example, but is not limited to this.

In this embodiment, the door 70 is a downward-opening door. In other words, the door 70 is attached to the cover 60 so that it can be opened downward. The door 70 may be attached to the cover 60 by a rod-shaped member such as a pin extending in the Y-axis direction, for example.

The cover 60 and the door 70 are insulating. The cover 60 and the door 70 may be made of the same material. The cover 60 and the door 70 are made of, for example, resin. For example, the door 70 may be a molded product (e.g., a resin molded product). The resin may be, for example, polyethylene resin, but is not limited to this, and other resins may also be used.

The cross-sectional shape of the wall portion 20 will now be described with reference to Figure 3. Figure 3 is a cross-sectional view showing the wall portion 20 when cut along line III-III shown in Figure 2.

As shown in FIG. 3, the wall portion 20 has flat plate-shaped members 21 to 25. The plate-shaped members 21 to 25 are provided extending in the X-axis direction, and, for example, their ends on the negative X-axis side are connected to the base 10. The cross-sectional shape of the plate-shaped members 21 to 25 is, for example, rectangular. The width of each of the plate-shaped members 21 to 25 will be described as being equal to, for example, width W (length in the Y-axis direction), but is not limited to this. The number of plate-shaped members included in the wall portion 20 is not particularly limited.

Plate-shaped members 21 to 23 are arranged at a predetermined interval P along the Y-axis direction. The predetermined interval P is, for example, smaller than the width W of plate-shaped members 24 and 25. Furthermore, plate-shaped member 22 is arranged so as to cover the space between plate-shaped members 24 and 25 from above. Plate-shaped member 22 is arranged so that it partially overlaps the opposing ends of plate-shaped members 24 and 25 in a plan view.

Plate-shaped members 24 and 25 are arranged along the Y-axis direction at a predetermined distance from plate-shaped members 21 to 23 on the negative side of the Z-axis direction. The distance at which plate-shaped members 24 and 25 are arranged may be, for example, distance P.

Plate-shaped member 24 is positioned so as to cover the space between plate-shaped members 21 and 22 from below. The width W of plate-shaped member 24 is greater than the distance P between plate-shaped members 21 and 22. Furthermore, plate-shaped member 24 is positioned so that it partially overlaps the opposing ends of plate-shaped members 21 and 22 in a planar view. This prevents terminal bar 30 from being visible between plate-shaped members 21 and 22 in a planar view, thereby preventing dust and other particles from accumulating on terminal bar 30.

Plate-shaped member 25 is positioned so as to cover the space between plate-shaped members 22 and 23 from below. The width W of plate-shaped member 25 is greater than the distance P between plate-shaped members 22 and 23. Furthermore, plate-shaped member 25 is positioned so that it partially overlaps the opposing ends of plate-shaped members 22 and 23 in a planar view. This prevents terminal bar 30 from being visible between plate-shaped members 22 and 23 in a planar view, thereby preventing dust and other particles from accumulating on terminal bar 30.

In addition, plate-shaped members 21-25 are arranged in a zigzag pattern along the longitudinal direction (Y-axis direction) of terminal bar 30 when viewed from the front. In other words, plate-shaped members 21-25 are arranged in a staggered pattern, with plate-shaped members 21-23 arranged on the positive side of the Z axis and plate-shaped members 24 and 25 arranged on the negative side of the Z axis. Note that a zigzag pattern means that when the centers of plate-shaped members 21-25 are connected in order along the Y-axis direction when viewed from the front, the lines form a zigzag pattern. One could also say that plate-shaped members 21-25 are arranged at each vertex of the zigzag pattern.

The direction in which plate-shaped members 21 to 23 are arranged and the direction in which plate-shaped members 24 and 25 are arranged are, for example, parallel. Furthermore, no through-holes that penetrate in the Z-axis direction are formed in plate-shaped members 21 to 25. Plate-shaped members 21 to 25 are spaced apart from each other and do not abut against each other.

In the wall portion 20 configured in this manner, the opening on one side of the communication hole 20a is formed by the spaces between plate-like members 21 and 22 and between plate-like members 22 and 23, and the opening on the other side of the communication hole 20a is formed by the space between plate-like members 24 and 25. The communication hole 20a is a hole that connects the opening on one side with the opening on the other side, and connects the space above and below the wall portion 20. The space above the wall portion 20 is the space on the positive side of the Z axis from plate-like members 21 to 23. The space below the wall portion 20 is the space on the negative side of the Z axis from plate-like members 24 and 25, specifically the space between the wall portion 20 and the terminal bar 30.

In addition, by arranging plate-like members 21 to 25 as described above, a flow path is formed in which air flows from the space below wall portion 20 to the space above wall portion 20 via the space between plate-like members 24 and 25 and the space between plate-like members 21 and 22, and a flow path is formed in which air flows from the space below wall portion 20 to the space above wall portion 20 via the space between plate-like members 24 and 25 and the space between plate-like members 22 and 23. The flow paths are curved, not linear.

This allows the space below the wall 20 to communicate with the space above the wall 20, preventing the wall 20 from obstructing the flow of air from below to above the wall 20. Heat generated in the terminal bar 30 is dissipated into the space above the wall 20 through the communication holes 20a, preventing the temperature of the terminal bar 30 from rising.

In the above, an example was described in which plate-like members 21 to 25 are arranged parallel to the X-axis direction, but they may also be arranged at an angle to the X-axis. Furthermore, the spacing between plate-like members 21 to 25 may be the same or different. For example, the spacing between plate-like members 21 and 22 and the spacing between plate-like members 22 and 23 may be the same or different.

Note that while the wall portion 20 has been described as having plate-shaped members 21 to 25 with rectangular cross-sectional shapes, the cross-sectional shapes of the plate-shaped members 21 to 25 are not limited to rectangular shapes and may be polygonal, elliptical, wavy, etc.

The distance between plate-shaped members 21-23 and plate-shaped members 24 and 25 in the Z-axis direction is not particularly limited, as long as it allows air to flow through.

[2. Effects, etc.]
As described above, the case according to this embodiment includes the base 10 to which the main breaker 40, the branch breakers 50, and the terminal bar 30 (an example of a conductive part) are fixed, the cover 60 that covers the base 10, and the wall portion 20 that protrudes from the base 10 toward the cover 60 (toward the positive side of the X-axis). The wall portion 20 has communication holes 20a that connect the spaces above and below the wall portion 20, and covers the terminal bar 30 from above when the main breaker 40, the branch breakers 50, and the terminal bar 30 are fixed to the base 10.

As a result, the wall portion 20 covers the terminal bar 30, preventing a decrease in the anti-tracking function. Furthermore, since the wall portion 20 is formed with a communication hole 20a, heat generated by the terminal bar 30 can be dissipated through the communication hole 20a. Therefore, the case according to this embodiment can improve heat dissipation for the terminal bar 30 while preventing a decrease in the anti-tracking function.

Furthermore, when the main breaker 40, branch breaker 50, and terminal bar 30 are fixed to the base 10, the terminal bar 30 cannot be seen when looking from the wall 20 toward the terminal bar 30 (from the positive side of the Z axis to the negative side of the Z axis).

This helps to further prevent the anti-tracking function from deteriorating. It also helps to further prevent people from coming into contact with the terminal bar 30.

The wall portion 20 is composed of multiple plate-like members 21-25 that protrude from the base 10 toward the cover 60 and are arranged in a zigzag pattern along the terminal bar 30 (along the Y-axis direction).

This allows heat to be dissipated through the gaps between the multiple plate-like members 21-25, effectively dissipating heat from the terminal bar 30. Furthermore, the zigzag arrangement of the multiple plate-like members 21-25 effectively prevents dust and other particles from reaching the terminal bar 30.

The base 10 and wall portion 20 are integrally formed.

This reduces the number of parts in the distribution board 1 and eliminates the installation work required when the wall section 20 is separate from the base 10, thereby reducing the cost of the distribution board 1.

The base 10 also has an attachment portion 10a for detachably attaching a holding member 31 that holds the terminal bar 30.

This makes it easier to assemble a distribution board 1 equipped with the above-described case. For example, after the base 10 alone is fixed to a construction material, the holding member 31 holding the terminal bar 30 can be attached to the base 10. Since the base 10 alone is lighter than a base 10 with the holding member 31 attached, it is possible to prevent a decrease in workability due to the weight of the base 10. It is also expected to have the effect of reducing worker fatigue during construction.

It also includes a door 70 that is rotatably attached to the cover 60 and covers the operating sections of the main breaker 40 and branch breaker 50.

This allows cases equipped with a door 70 to improve heat dissipation to the terminal bar 30 while preventing a decrease in anti-tracking functionality.

As described above, the distribution board 1 according to this embodiment includes the above-mentioned case, a main breaker 40, branch breakers 50, and terminal bars 30 (an example of a conductive part) fixed to the case.

This achieves the same effect as the above case. In other words, it is possible to realize a distribution board 1 that can improve heat dissipation to the terminal bar 30 while suppressing a deterioration in the tracking prevention function.

(Modification of the embodiment)
The configuration of the distribution board according to this modification will be described with reference to Figs. 4 to 7. Fig. 4 is an exploded perspective view showing the configuration of the distribution board 100 according to this modification. Fig. 5 is an enlarged perspective view of the wall portion 120 according to this modification. Fig. 6 is a cross-sectional perspective view showing the wall portion 120 when cut along line VI-VI shown in Fig. 5.

As shown in FIG. 4 , the distribution board 100 of this modified example includes a wall portion 120 instead of the wall portion 20. The remaining configuration of the distribution board 100 is the same as in the embodiment, and therefore description thereof will be omitted. The wall portion 120 is integrally formed with the base 10 and protrudes from the base 10 toward the cover 60 (the positive direction of the X-axis). When the terminal bar 30, main breaker 40, and branch breakers 50 are fixed to the base 10, the wall portion 120 covers the terminal bar 30 from above (the positive side of the Z-axis). In a plan view (here, when the terminal bar 30 is viewed from the wall portion 120 side) with the terminal bar 30, main breaker 40, and branch breakers 50 fixed in place, the terminal bar 30 is hidden by the wall portion 120 and cannot be seen. This prevents dust from accumulating above the wall portion 120 on the terminal bar 30.

As shown in Figures 5 and 6, the wall portion 120 has a plate-shaped portion 120a and a protruding portion 121. Figures 5 and 6 show an example in which the wall portion 120 has two protruding portions 121, but the number of protruding portions 121 is not particularly limited and may be one or more.

The plate-like portion 120a is connected to the base 10 and is a plate-like member formed in an area where the protrusion portion 121 is not provided in a plan view. The plate-like portion 120a covers part of the terminal bar 30. Multiple plate-like portions 120a are provided along the Y-axis direction, and each has a trapezoidal shape in a plan view (a trapezoidal shape that tapers toward the negative X-axis side).

The protrusion 121 is a component that connects the spaces above and below the wall 120, and protrudes upward (toward the positive Z-axis) from the plate-shaped portion 120a. The protrusion 121 has an upper surface 122 and three side surfaces 123.

The top surface portion 122 is a plate-shaped member located on the positive side of the Z axis of the plate-shaped portion 120a. In this embodiment, the planar shape of the top surface portion 122 is trapezoidal (a trapezoidal shape that tapers toward the positive side of the X axis), but is not limited to this. The trapezoidal shape can reduce the strength of the molding die used to mold the base 10 having the wall portion 120.

The side surface portion 123 is a plate-shaped member that protrudes from the plate-shaped portion 120a toward the top surface portion 122. The positive end of the side surface portion 123 in the Z-axis direction is connected to the top surface portion 122, and the negative end of the side surface portion 123 in the Z-axis direction is connected to the plate-shaped portion 120a. The wall portion 120 formed in this manner forms a space 126 surrounded by the top surface portion 122 and the side surface portion 123. The space 126 is connected to the space below the wall portion 120 (i.e., the space between the wall portion 120 and the terminal bar 30).

Communication holes 124 and 125 are formed in the side surface portion 123. Communication hole 124 is a through hole formed in two of the three side surface portions 123 that are formed on the Y-axis direction side. Communication hole 124 connects the space above wall portion 120 with space 126. Communication hole 125 is a through hole formed in the side surface portion 123 on the positive side of the X-axis of the three side surface portions 123. Communication hole 125 connects the space above wall portion 120 with space 126.

This creates a flow path for air to flow from the space below wall portion 120 to the space above wall portion 120 via space 126 and communication hole 124, and a flow path for air to flow from the space below wall portion 120 to the space above wall portion 120 via space 126 and communication hole 125. As a result, heat generated in terminal bar 30 is dissipated into the space above wall portion 120 via these two flow paths.

Note that no through-holes extending in the Z-axis direction are formed in the plate-shaped portion 120a or the top surface 122 of the protruding portion 121. Furthermore, it is sufficient that at least one of the communication holes 124 and 125 is formed in the side surface portion 123.

Figure 7 is a cross-sectional view of the distribution board 100 according to this modified example, taken along a cutting line corresponding to line VII-VII in Figure 1. Figure 7 shows a cross-sectional view of the components housed in the case (base 10 and cover 60).

As shown in FIG. 7 , the distribution board 100 has a ventilation section 180, which is a gap between the base 10 and the cover 60 when the base 10 and the cover 60 are joined. The ventilation section 180 is located above the wall section 120.

As described above, the wall portion 120 of the case in this modified example has a protrusion portion 121 that protrudes upward (toward the positive Z-axis side) of the wall portion 120, and the communication holes 124 and 125 are provided on the side surface (side surface portion 123) of the protrusion portion 121.

This allows heat generated by the terminal bar 30 to be dissipated through the communication holes 124, 125 formed in the side surface 123 of the protrusion 121. Furthermore, dust and other particles are less likely to accumulate on the terminal bar 30 than when the communication holes 124, 125 are formed in the top surface 122, for example. Therefore, the case can improve heat dissipation while preventing a decrease in tracking prevention functionality.

In addition, when the base 10 and cover 60 are joined together, there is a ventilation section 180, which is a gap between the base 10 and cover 60.

This allows heat generated by the terminal bar 30 to escape to the outside of the distribution board 100, further improving the heat dissipation capabilities of the distribution board 100.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

For example, in the above embodiments, the length of the wall portion in the X-axis direction is described as being equal to or greater than the length of the terminal bar in the X-axis direction, but this is not limited thereto and the wall portion may be less than the length of the terminal bar in the X-axis direction. In a plan view, it is sufficient that the wall portion covers at least a portion of the terminal bar in the X-axis direction.

In addition, in the above embodiment, an example was described in which the wall portion is formed in a two-stage configuration in the Z-axis direction, with three plate-shaped members (plate-shaped members 21-23) formed on the positive side of the Z-axis and two plate-shaped members (plate-shaped members 24 and 25) formed on the negative side of the Z-axis. However, the wall portion may also have a three-stage or more configuration in the Z-axis direction.

Furthermore, in the above embodiments, an example was described in which openings that expose the main breaker and branch breakers are formed in the cover, but such openings do not have to be formed.

In addition, while the above embodiments and the like have been described as examples in which a door is provided on the cover, this is not limited to this, and a door may not be provided. For example, the distribution board may have exposed controls for at least one of the main breaker and branch breakers.

Furthermore, in the above embodiments, examples have been described in which the wall portion is integrally formed with the base, but this is not limited to this, and the wall portion may also be detachably attached to the base.

In addition, the present invention also includes forms obtained by applying various modifications to the embodiments that would occur to those skilled in the art, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the spirit of the present invention.

REFERENCE SIGNS LIST 1, 100 Distribution board 10 Base 10a Mounting portion 20, 120 Wall portion 20a, 124, 125 Communication hole 21, 22, 23, 24, 25 Plate-shaped member 30 Terminal bar (conductive portion)
31 Holding member 40 Main breaker 50 Branch breaker 60 Cover 70 Door 121 Protruding portion 123 Side portion 180 Ventilation portion

Claims (7)

a base to which the main breaker, the branch breaker, and the conductive part are fixed;
a cover that covers the base;
a wall portion protruding from the base toward the cover,
the wall portion has a communication hole that connects spaces above and below the wall portion, and covers the conductive portion from above in a state in which the main breaker, the branch breakers, and the conductive portion are fixed to the base;
The wall portion is made up of a plurality of plate-like members that protrude from the base toward the cover and are arranged in a zigzag pattern along the conductive portion.
case. The case according to claim 1 , wherein when the main breaker, the branch breakers, and the conductive part are fixed to the base and the conductive part is viewed from the wall side, the conductive part is not visible. The case according to claim 1 or 2 , wherein when the base and the cover are joined together, a ventilation portion is provided as a gap between the base and the cover. The case according to any one of claims 1 to 3 , wherein the base and the wall portion are integrally formed. The case according to any one of claims 1 to 4 , wherein the base has an attachment portion for detachably attaching a holding member that holds the conductive portion. The case according to any one of claims 1 to 5 , further comprising a door rotatably attached to the cover and covering an operating section of the main breaker and the branch breaker. A case according to any one of claims 1 to 6 ;
A distribution board comprising a main breaker, branch breakers, and a conductive part fixed to the case.