JP7698392B2 - Distribution Board - Google Patents

Description

This disclosure relates to a distribution board.

Patent Document 1 discloses a distribution board that includes a body member located on the rear side, and a cover member that is attached to the body member so as to cover the power distribution equipment arranged inside the body member while leaving some of the handles and other parts exposed, and the cover member is provided with an openable door to prevent the entire power distribution equipment from being exposed (closed state).

JP 2018-160992 A

However, it is desirable to improve the workability of distribution boards during installation.

Therefore, this disclosure provides a distribution board that can improve workability during installation.

A distribution board according to one aspect of the present disclosure includes a base on which a main breaker and a branch breaker are attached, the base being formed with a first wiring port for passing a power line connected to the main breaker and a second wiring port for passing a power line connected to the branch breaker, and a cover covering the base, and the base further includes a communication portion formed in the base that communicates, in a front view of the base, at least one of the first wiring port and the second wiring port with the external space surrounding the base in the front view.

According to one aspect of the present disclosure, it is possible to realize a distribution board that can improve workability during installation.

FIG. 1 is a perspective view showing the appearance of a distribution board according to a first embodiment in a closed state. FIG. 2 is a perspective view showing the appearance of the distribution board according to the first embodiment in an open state. FIG. 3 is an exploded perspective view showing the configuration of the distribution board according to the first embodiment. FIG. 4 is an enlarged view of the dashed line area in FIG. FIG. 5 is a diagram for explaining attachment of the holding member according to the first embodiment. FIG. 6 is a partial cross-sectional perspective view of the distribution board according to the first embodiment in an open state. FIG. 7 is a cross-sectional view of the dashed line area in FIG. 6 as viewed from above. FIG. 8 is a perspective view showing a base according to a modification of the first embodiment. FIG. 9 is an exploded perspective view showing the configuration of a distribution board according to the second embodiment. FIG. 10 is a front view showing a base according to the second embodiment. FIG. 11 is a cross-sectional view of the base taken along line XI-XI shown in FIG. FIG. 12 is a flowchart showing a method for installing a distribution board according to the second embodiment.

The following describes the embodiment in detail with reference to the drawings.

The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, components, component placement and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present disclosure. For example, numerical values are not expressions that express only the strict meaning, but expressions that include a substantially equivalent range, for example, a difference of about a few percent. Furthermore, among the components in the following embodiments, components that are not described in the independent claims are described as optional components.

In addition, each figure is a schematic diagram and is not necessarily an exact illustration. Therefore, for example, the scales of each figure do not necessarily match. In addition, in each figure, the same reference numerals are used for substantially the same configuration, and duplicate explanations are omitted or simplified.

In this specification and the drawings, the X-axis, X-axis, and Z-axis indicate the three axes of a three-dimensional Cartesian coordinate system. In each embodiment, the X-axis direction is the thickness direction of the distribution board (the stacking direction of the components). In this specification, "front view" means the case where the distribution board is viewed along the X-axis direction (thickness direction of the distribution board), and "top view" means the case where the distribution board is viewed along the Z-axis direction. The Z-axis direction is the up-down direction when the distribution board is attached to a construction material, but is not limited to this.

In addition, in this specification, terms indicating the relationship between elements, such as parallel and perpendicular, terms indicating the shape of elements, such as rectangular and U-shaped, as well as numerical values and numerical ranges, are not expressions that express only the strict meaning, but are expressions that include a substantially equivalent range, for example, a difference of about a few percent (for example, about 5%).

(Embodiment 1)
[1-1. Configuration of distribution board]
The configuration of a distribution board according to the present embodiment will be described with reference to Fig. 1 to Fig. 3. Fig. 1 is a perspective view showing the appearance of a distribution board 1 according to the present embodiment in a closed state. Fig. 2 is a perspective view showing the appearance of a distribution board 1 according to the present embodiment in an open state.

As shown in Figures 1 and 2, the distribution board 1 has a door 70, which can be opened or closed to expose a portion of the main breaker 40 and the branch breaker 50 (e.g., an operating section including a handle, etc.) or to close the door 70 to expose the portion.

The distribution board 1 receives power (system power) from a power system, which is a facility of an electric power company or the like, and branches the system power into multiple branch circuits. The distribution board 1 is installed inside a facility that uses electricity, such as a home, hospital, factory, or building.

The configuration of the distribution board 1 will be described below with further reference to Figures 3 to 7. Figure 3 is an exploded perspective view showing the configuration of the distribution board 1 according to this embodiment.

As shown in FIG. 3, the distribution board 1 includes a base 10, a holding member 20, a mounting stand 30, a main breaker 40, a branch breaker 50, a cover 60, and a door 70. The base 10 and the cover 60 form the housing of the distribution board 1. The holding member 20, the mounting stand 30, the main breaker 40, and the branch breaker 50 are housed within the housing. In this embodiment, the housing is box-shaped.

The base 10 is a plate-shaped member to which the main breaker 40 and the branch breaker 50 are attached. The base 10 is attached directly to the construction material. The base 10 is attached, for example, in contact with a wall (e.g., plaster board).

The base 10 is made of metal, for example, galvanized steel sheet, stainless steel, etc. From the viewpoint of keeping costs low, it is preferable that the base 10 is made of galvanized steel sheet. In this way, the base 10 is made of a conductive material, but a part of the base 10 may be made of an insulating material such as resin. Furthermore, the base 10 may be, for example, a molded product the part of which is made of resin. Furthermore, the base 10 may be a molded product entirely made of resin. The shape of the base 10 when viewed from the front is, for example, rectangular.

The base 10 has a main body portion 11, a first wall portion 12, and a second wall portion 13.

The main body 11 is a plate-shaped member to which the main breaker 40 and the branch breaker 50 are attached. When the distribution board 1 is attached to a construction material, the main body 11 is attached so as to come into contact with the construction material. The main body 11 is attached directly to the construction material. The main body 11 is also formed with a first wiring port 14 and a second wiring port 15, which are openings for passing power lines through.

The first wiring port 14 is inserted with a power line connected to the main breaker 40, and the second wiring port 15 is inserted with a power line connected to the branch breaker 50. The first wiring port 14 and the second wiring port 15 are not connected to the external space of the base 10 when viewed from the front. The first wiring port 14 and the second wiring port 15 can also be said to be closed openings. The positions, sizes, and numbers of the first wiring port 14 and the second wiring port 15 are not particularly limited. The external space means the space around the base 10 when viewed from the front.

The first wall portions 12 are plate-shaped members that protrude from both ends of the main body portion 11 in the Y-axis direction (an example of the first direction, e.g., the left-right direction when attached to the construction material) in a direction toward the cover 60 (the positive direction of the X-axis). The pair of first wall portions 12 are disposed opposite each other. The pair of first wall portions 12 are parallel to each other and are disposed, for example, perpendicular to the main body portion 11.

The second wall portions 13 are plate-shaped members that protrude from both ends of the main body portion 11 in the Z-axis direction (an example of the second direction, e.g., the up-down direction when attached to the construction material) in a direction toward the cover 60 (the positive direction of the X-axis). The pair of second wall portions 13 are disposed opposite each other. The pair of second wall portions 13 are parallel to each other and are arranged, for example, perpendicular to the main body portion 11.

The pair of first walls 12 and the pair of second walls 13 form a wall that surrounds the outer periphery of the main body 11. For example, when the cover 60 is attached to the base 10, the pair of first walls 12 and the pair of second walls 13 surround the wall of the cover 60 from the inside.

The length in the X-axis direction of the pair of second wall portions 13 (second height) is, for example, smaller than the length in the X-axis direction of the pair of first wall portions 12 (first height). The second height is, for example, less than half the first height, and may be, for example, less than one-third. This allows for a larger working space during construction, improving workability.

The first height and the second height may be equal. Furthermore, of the pair of first walls 12 and the pair of second walls 13, the pair of second walls 13 may not be provided.

The first height may be any length that allows the holding member 20 to be attached to the first wall portion 12. Furthermore, if the holding member 20 has a mechanism that allows the holding member 20 to be directly attached to the main body portion 11, the pair of first walls 12 and the pair of second walls 13 may not be provided. In other words, the base 10 may be composed of only the main body portion 11 out of the main body portion 11, the pair of first walls 12, and the pair of second walls 13.

The main body 11, the pair of first walls 12, and the pair of second walls 13 are, for example, integrally formed.

The holding member 20 is a member for holding the cover 60. The holding member 20 further has a holding mechanism for holding the door 70 in a closed state. The holding member 20 according to this embodiment has the holding mechanism and is characterized in that it holds both the cover 60 and the door 70. The configuration of the holding member 20 will be described later.

In this embodiment, the holding member 20 and the base 10 are separate members, and the holding member 20 is fixed to the base 10, but the holding member 20 and the base 10 may be integrally formed.

The holding member 20 is made of, for example, a material having toughness or elasticity. The holding member 20 may also be made of, for example, the same material as the door 70. In this embodiment, the door 70 is made of resin. The resin is, for example, nylon resin, but is not limited to this, and other resins may be used.

In addition, at least a portion of the holding member 20 is exposed in the open state. For example, as shown in FIG. 2, in the open state, the claw portion 21, which is a part of the holding member 20, is exposed from the first opening 62. Note that the holding portion 24 (see FIG. 2) provided on the claw portion 21 is an example of a holding mechanism.

The holding member 20 is arranged to sandwich the door 70 when viewed from the front. At least a portion of the holding member 20 (e.g., the holding portion 24) overlaps with the door 70 when viewed from the front.

The mounting base 30 is a fixed plate to which the main breaker 40 and the branch breaker 50 are fixed. The mounting base 30 has a configuration capable of fixing the main breaker 40 and the branch breaker 50. The method by which the mounting base 30 fixes the main breaker 40 and the branch breaker 50 is not particularly limited. The main breaker 40 and the branch breaker 50 may be fixed to the mounting base 30 by fitting a protrusion on one side of the mounting base 30 and the main breaker 40 or the branch breaker 50 into a recess or slit on the other side.

The mounting base 30 to which the main breaker 40 and the branch breaker 50 are fixed is also referred to as the internal unit. The internal unit is attached to the main body 11 by fastening members such as screws.

The main breaker 40 is a breaker that stops the supply of power from the power grid when a current that exceeds 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 on each power line (branch circuit) connected to the distribution board 1. Multiple branch breakers 50 are provided. When an overcurrent flows in 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 have at least one of the main breaker 40 and the 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 and has openings (second opening 63 and third opening 64) that expose the operating parts of the main breaker 40 and the branch breaker 50.

The cover 60 has a protrusion 61. The protrusion 61 is provided on the front surface of the cover 60, protruding in the positive direction of the X-axis from near the center of the end in the Y-axis direction. The pair of protrusions 61 are provided opposite each other in a front view, sandwiching the second opening 63 and the third opening 64. The pair of protrusions 61 are provided, for example, parallel to each other. The pair of protrusions 61 are trapezoidal when viewed in the Y-axis direction, but the shape is not limited to this.

The length in the Z-axis direction of the pair of protrusions 61 is longer than the length in the Z-axis direction of the second opening 63 and the third opening 64. A first opening 62 is formed on each of the opposing surfaces of the pair of protrusions 61. A part of the holding member 20 (e.g., the claw portion 21) for fixing the cover 60 to the base 10 is located in the first opening 62. The claw portion 21 engages with the surface of the cover 60 at the first opening 62, thereby fixing the cover 60 to the base 10.

The second opening 63 is an opening that exposes the operating section of the main breaker 40, and has a position, shape, and size that correspond to the main breaker 40. The third opening 64 is an opening that exposes the operating section of each of the multiple branch breakers 50, and has a position, shape, and size that correspond to the multiple branch breakers 50. The third opening 64 exposes the operating sections of each of the multiple branch breakers 50 collectively. Note that the second opening 63 and the third opening 64 are examples of openings. The operating section may also include a display section that displays the connection destination of the breaker, etc.

The door 70 is rotatably attached to the cover 60 and opens and closes the second opening 63 and the third opening 64. The door 70 covers the second opening 63 and the third opening 64, and is attached to the protrusion 61 of the cover 60 so as to be rotatable about the Y-axis direction as the axis of rotation. As will be described in detail later, when the door 70 is in the closed state, it is held by the holding portion 24 of the holding member 20 (see FIG. 2).

In this embodiment, the door 70 is a downward-opening door. In other words, the door 70 is attached to the cover 60 so as to be able to open downward. For example, the ends of the door 70 on the negative Z-axis side at both ends in the longitudinal direction are attached to the ends of the convex portion 61 on the negative Z-axis side by a rod-shaped member such as a pin. This allows the door 70 to be rotatably attached to the convex portion 61 by a part with a simple structure such as a pin. The door 70 can be rotatably attached to the convex portion 61 by a part that is smaller than a door that opens upward, for example.

When the distribution board 1 is in the open state, the rotation of the door 70 is restricted by the cover 60. For example, when viewed from the positive side of the Y axis to the negative side of the Y axis, in the open state, the clockwise rotation of the door 70 is restricted by the cover 60. For example, the surface of the door 70 abuts against the surface of the cover 60, thereby restricting the rotation of the door 70. In other words, the distribution board 1 does not need to be provided with a dedicated part for restricting the rotation of the door 70. The door 70 may be an upward-opening door.

The door 70 has, for example, a rectangular shape when viewed from the front, but is not limited to this. The door 70 is elongated in the Y-axis direction. The elongated direction of the door 70 and the arrangement direction of the pair of holding members 20 are, for example, parallel to each other.

The cover 60 and the door 70 are electrically insulating. The cover 60 and the door 70 are 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 (resin molded product). The resin is, for example, polyethylene resin, but is not limited to this, and other resins may be used.

[1-2. Configuration of holding member]
Next, the configuration of the holding member 20 will be described with reference to Fig. 4 to Fig. 7. Fig. 4 is an enlarged view of the dashed line region R4 in Fig. 3. Fig. 5 is a view for explaining the attachment of the holding member 20 according to this embodiment. Fig. 4 shows the state after the holding member 20 has been fixed to the base 10 (specifically, the first wall portion 12), and Fig. 5 shows the state before the holding member 20 is fixed to the base 10.

As shown in FIG. 4, the holding member 20 has a claw portion 21, a fitting portion 22, and a restricting portion 23. The claw portion 21 is also formed with a holding portion 24. The claw portion 21, the fitting portion 22, the restricting portion 23, and the holding portion 24 are, for example, integrally formed.

The claw portion 21 is a portion for fixing the cover 60 to the base 10. The claw portion 21 fixes the cover 60 to the base 10, for example, by abutting against the cover 60 through the first opening 62 of the cover 60.

The fitting portion 22 is a portion for fixing the holding member 20 to the first wall portion 12. When viewed from above, for example, the fitting portion 22 has a recess formed on the side opposite the claw portion 21 (the negative X-axis side). The recess is a recess for fixing the fitting portion 22 to the first wall portion 12 by press-fitting, and has a length according to the thickness of the first wall portion 12 (length in the Y-axis direction). When viewed from above, the fitting portion 22 is, for example, U-shaped, but the shape is not limited to this.

The restricting portion 23 is located outside the claw portion 21 when the holding member 20 is fixed to the first wall portion 12, and restricts the claw portion 21 from warping outward. The restricting portion 23 is disposed opposite the claw portion 21, and restricts the warping of the claw portion 21 by abutting against the claw portion 21 when the claw portion 21 warps outward. The restricting portion 23 may have the same length in the X-axis direction as the claw portion 21, for example, or may be provided parallel to the claw portion 21. Note that the restricting portion 23 is not a required component.

The holding portion 24 is an example of a holding mechanism, and has a configuration for holding the door 70 in the closed state. The holding portion 24 is, for example, a protrusion provided on the claw portion 21, and has, for example, an elongated shape in the Z-axis direction.

In this way, the holding member 20 has a configuration for holding the door 70 in the closed state in addition to its original function of fixing the cover 60 to the base 10.

As shown in FIG. 5, the retaining member 20 as described above is fixed to the first wall portion 12. The retaining member 20 is fixed to the first wall portion 12, for example, by pressing the mating portion 22 of the retaining member 20 into the first wall portion 12. Note that the retaining member 20 is not limited to being fixed by pressing, and may be fixed to the first wall portion 12 by a fastening member such as a screw.

Next, the configuration of the holding portion 24 will be described with further reference to Figs. 6 and 7. Fig. 6 is a partial cross-sectional perspective view of the distribution board 1 according to this embodiment in an open state. Fig. 7 is a cross-sectional view of the dashed line area R7 in Fig. 6 as viewed from above. Figs. 6 and 7 show a cross-sectional perspective view and a cross-sectional view of the distribution board 1 cut through the door 70 and on a plane parallel to the XY plane.

As shown in Figures 6 and 7, the claw portion 21 has a shape (e.g., hook-shaped) with a tip that protrudes inward (to the negative Y-axis side in the example of Figure 6), and engages with the cover 60 when the abutment surface 25 of the protruding projection abuts against the surface of the front side (positive X-axis side) of the cover 60. In this way, the holding member 20 restricts the movement of the cover 60. In other words, the holding member 20 fixes the cover 60 to the base 10.

The retaining portion 24 formed on the claw portion 21 is provided on an inclined surface 26 on the door 70 side (positive side of the X-axis) from the abutment surface 25 of the claw portion 21. Specifically, the retaining portion 24 is a protrusion that protrudes from the inclined surface 26 toward the door 70 side (negative side of the Y-axis). The retaining portion 24 is a protrusion that is smaller than the protrusion that engages with the cover 60.

Furthermore, the door 70 has engagement portions 71 at its ends (both ends) in the Y-axis direction that engage with the holding portion 24 in the closed state. In the closed state, the engagement portions 71 are provided at a position closer to the base 10 (negative side of the X-axis) than the holding portion 24 of the claw portion 21, so as to protrude from the ends in a direction toward the claw portion 21 (positive direction of the Y-axis in the example of FIG. 7). In the closed state, the holding portion 24 and the engagement portions 71 abut against each other.

As shown in FIG. 6, when the distribution board 1 is in the open state, the engagement portion between the claw portion 21 and the cover 60 is exposed. That is, when the distribution board 1 is attached to the construction material, the engagement portion can be visually confirmed. In other words, the engagement portion is located in a position in the distribution board 1 that is visible in the open state. For example, by providing a marker in the area of the cover 60 that abuts against the abutment surface 25 of the claw portion 21, it is possible to determine whether the claw portion 21 is firmly engaged (for example, whether the claw portion 21 is not firmly hooked) based on whether the marker is visible. In other words, the degree of engagement of the claw portion 21 can be confirmed simply by checking whether the marker is visible. The marker may be formed, for example, by making the color of the area of the cover 60 that abuts against the abutment surface 25 different from the other areas.

[1-3. Effects, etc.]
As described above, the distribution board 1 according to the present embodiment includes the base 10 to which at least one of the main breaker 40 and the branch breaker 50 is attached, the cover 60 that covers the base 10 and has the second opening 63 and the third opening 64 (an example of an opening) that expose the operating parts of the main breaker 40 and the branch breaker 50, the door 70 that is rotatably attached to the cover 60 and opens and closes the second opening 63 and the third opening 64, and the holding member 20 that holds the cover 60. The holding member 20 has a holding portion 24 that holds the door 70 when the door 70 is in a closed state in which the second opening 63 and the third opening 64 are closed.

As a result, the cover 60 and the door 70 can be held by a single member (holding member 20), which reduces the number of parts compared to when the cover 60 and the door 70 are held by different members. Therefore, the distribution board 1 can be manufactured at low cost.

In addition, the holding portion 24 is a protrusion formed on the holding member 20, and the door 70 has an engagement portion 71 that engages with the protrusion when in the closed state.

This allows the holding member 20 to hold the door 70 with a simple configuration that includes a protrusion.

In addition, the retaining member 20 has a claw portion 21 with an abutment surface 25 that abuts against the cover 60, and the protrusion is provided on an inclined surface 26 (an example of a surface) on the door 70 side of the abutment surface 25 of the claw portion 21.

This allows the door 70 to be held in place simply by providing a protrusion on the inclined surface 26 of the claw portion 21.

In addition, at least a portion of the claw portion 21 is exposed in the open state.

This makes it easy to check whether the claw portion 21 is engaged with the cover 60, i.e., whether the cover 60 is fixed to the base 10, even after the distribution board 1 is attached to the construction material. For example, it is possible to prevent the cover 60 from falling off after the distribution board 1 is attached to the construction material, thereby improving safety during use.

In addition, the door 70 is a downward-opening door, and when in the open position, its rotation is restricted by abutting against the cover 60.

This makes it easier to keep the door 70 open compared to when the door 70 opens upward, and allows the parts for rotatably attaching the door 70 to the cover 60 to be simplified or made smaller. This leads to a reduction in the cost of the distribution board 1.

The base 10 is also made of metal and can be attached directly to construction materials.

This allows for a low-cost, high-strength base 10 to be realized compared to bases 10 made of resin or the like.

In addition, the holding member 20 and the base 10 may be separate members, and the holding member 20 may be fixed to the base 10.

For example, if the base 10 is made of metal, complex processing is required to make the holding member 20 out of metal. In addition, material yield may be poor (e.g., the number of bases 10 that can be obtained from the original plate may be reduced). On the other hand, by making the holding member 20 a separate member from the base 10, it becomes possible to select materials and manufacturing methods according to the shape of the holding member 20, which contributes to reducing costs.

The holding member 20 and the base 10 may also be formed integrally.

This eliminates the need to attach the retaining member 20 to the base 10, making it easier to manufacture the distribution board 1. In addition, the number of parts can be reduced, making it possible to further reduce costs (manufacturing costs).

The door 70 may also be made of resin.

This makes it easy to form the door 70.

The retaining member 20 may also be made of the same material as the door 70.

For example, if the holding member 20 and the door 70 were made of different materials, the difference in strength could cause problems such as one of the holding member 20 and the door 70 being worn down due to friction caused by opening and closing operations. On the other hand, if the holding member 20 and the door 70 are made of the same material, differences in strength are less likely to occur, making it possible to prevent wear and tear caused by opening and closing operations.

(Modification of the first embodiment)
The following describes a distribution board according to this modification with reference to Fig. 8. The following mainly describes the differences from the first embodiment, and the description of the same or similar contents as the first embodiment is omitted or simplified. Fig. 8 is a perspective view showing a base 110 according to this modification. The following describes a distribution board that improves workability during construction.

As shown in FIG. 8, the distribution board according to this modification has a base 110 instead of the base 10 of the distribution board 1 according to embodiment 1. The base 110 according to this modification further has a first communication portion 14a and a second communication portion 15a formed on the base 10 according to embodiment 1. Specifically, the first communication portion 14a and the second communication portion 15a are formed on the main body portion 111. Furthermore, the base 110 according to this modification has a pair of second walls 113 instead of the pair of second walls 13.

The first communication portion 14a is located between the first wiring port 14 and the external space in a front view, and connects the first wiring port 14 and the external space. When viewed from the Y-axis direction, the first communication portion 14a connects the first wiring port 14 and the external space in a direction intersecting the insertion direction of the power line that passes through the first wiring port 14. The first communication portion 14a is formed, for example, extending from the first wiring port 14 in the positive direction of the Z-axis in a front view.

The length of the first communication portion 14a in the Y-axis direction is determined, for example, by the number and size of the power lines connected to the main breaker 40. For example, the length of the first communication portion 14a in the Y-axis direction is smaller than the length of the first wiring port 14 in the Y-axis direction. The first wiring port 14 can also be said to be an open opening. Also, the first wiring port 14 can also be said to be open toward the external space when viewed from the front.

The second communication portion 15a is located between the second wiring port 15 and the external space in a front view, and connects the second wiring port 15 and the external space. When viewed from the Y-axis direction, the second communication portion 15a connects the second wiring port 15 and the external space in a direction intersecting the insertion direction of the power line that passes through the second wiring port 15. The second communication portion 15a is formed, for example, extending from the second wiring port 15 in the negative Z-axis direction in a front view.

The length of the second communication portion 15a in the Y-axis direction is determined, for example, by the number and size of the power lines connected to the branch breaker 50. For example, the length of the second communication portion 15a in the Y-axis direction is smaller than the length of the second wiring port 15 in the Y-axis direction. The second wiring port 15 can also be said to be an open opening. Also, the second wiring port 15 can also be said to be open toward the external space when viewed from the front.

The length of the first communication portion 14a in the Y-axis direction may be the same as the length of the first wiring port 14 in the Y-axis direction. In this case, the first wiring port 14 can also be said to be a notch formed in the base 110. The length of the second communication portion 15a in the Y-axis direction may be the same as the length of the second wiring port 15 in the Y-axis direction. In this case, the second wiring port 15 can also be said to be a notch formed in the base 110. At least one of the first wiring port 14 and the second wiring port 15 may be a notch formed in the base 110. The planar shape of the first communication portion 14a and the second communication portion 15a is, for example, rectangular, but is not limited thereto.

Each of the pair of second wall portions 113 is partially divided by the first communicating portion 14a or the second communicating portion 15a. In other words, each of the pair of second wall portions 113 is composed of a wall that is spaced apart. For example, when viewed from above, the first communicating portion 14a and the second communicating portion 15a are formed in positions that do not overlap each other.

In this manner, in a front view of the base 110 according to this modified example, a communication portion is formed that connects each of the first wiring port 14 and the second wiring port 15 to the external space of the base 110. Note that it is sufficient that at least one of the first communication portion 14a and the second communication portion 15a is formed.

The base 110 may not have at least one of the pair of first wall portions 12 and the pair of second wall portions 113. The base 110 may not have both the pair of first wall portions 12 and the pair of second wall portions 113, for example. For example, the base 110 may be flat.

When only one of the main breaker 40 and the branch breaker 50 is attached to the base 110, only the wiring port and communication portion corresponding to that one of the first wiring port 14 and the first communication portion 14a, and the second wiring port 15 and the second communication portion 15a may be formed on the base 110.

As described above, the distribution board according to this modified example includes a base 110 on which the main breaker 40 and the branch breaker 50 are attached, the base 110 being formed with a first wiring port 14 for passing the power lines connected to the main breaker 40 and a second wiring port 15 for passing the power lines connected to the branch breaker 50, and a cover 60 that covers the base 110. The base 110 further includes a communication portion that, in a front view of the base 110, communicates with at least one of the first wiring port 14 and the second wiring port 15 and the external space surrounding the base 110 in the front view.

This allows the power line to be placed in at least one of the first wiring port 14 and the second wiring port 15 through the communication portion when constructing the distribution board. In other words, the worker does not need to pass the power line through the loop-shaped wiring port in at least one of the first wiring port 14 and the second wiring port 15. This improves the workability of placing the power line when constructing the distribution board.

In addition, the base 110 is formed with a first communication portion 14a that communicates the first wiring port 14 with the external space, and a second communication portion 15a that communicates the second wiring port 15 with the external space when viewed from the front.

This allows power lines to be placed in the first wiring port 14 and the second wiring port 15 via the communication section when constructing the distribution board. This further improves the workability of placing power lines when constructing the distribution board.

In addition, at least one of the first wiring port 14 and the second wiring port 15 is a notch formed in the base 110.

This makes it easier to place power lines in at least one of the first wiring port 14 and the second wiring port 15. This further improves the ease of placing power lines when constructing the distribution board.

When attached to the construction material, the base 110 has a pair of first walls 12 that protrude from the end in the left-right direction (an example of a first direction) toward the cover 60, and a pair of second walls 113 that protrude from the end in the up-down direction (an example of a second direction intersecting with the first direction). The length of the second walls 113 in that direction may be smaller than the length of the first walls 12 in that direction.

As a result, the length of the second wall portion 113 in that direction is small, so that the second wall portion 113 is prevented from getting in the way when performing work such as wiring to the main breaker 40 and the branch breaker 50. This further improves the ease of arranging the power lines when constructing the distribution board.

In addition, when the base 110 is attached to the construction material, it may have a pair of first wall portions 12 (an example of a wall portion) that protrude from the left and right ends in a direction toward the cover 60, and may not have wall portions that protrude in the up and down directions from the ends.

This means that there are no walls that can get in the way when wiring to the main breaker 40 and the branch breaker 50, which further improves the ease of arranging power lines when constructing the distribution board.

(Embodiment 2)
A distribution board according to the present embodiment will be described below with reference to Figures 9 to 12. The following description will focus on the differences from the first embodiment, and descriptions of the same or similar contents as the first embodiment will be omitted or simplified. In the present embodiment, a distribution board that improves workability during construction will be described.

[2-1. Configuration of distribution board]
First, the configuration of the distribution board according to the present embodiment will be described with reference to Fig. 9 to Fig. 11. Fig. 9 is an exploded perspective view showing the configuration of a distribution board 200 according to the present embodiment. Fig. 10 is a front view showing a base 210 according to the present embodiment. Fig. 11 is a cross-sectional view of the base 210 when cut along line XI-XI shown in Fig. 10.

As shown in FIG. 9, the distribution board 200 according to this embodiment includes a base 210, a holding member 20, a mounting stand 230, a main breaker 40, a branch breaker 50, a cover 60, a door 70, and a sheet member 280. The distribution board 200 according to this embodiment includes a base 210 and a mounting stand 230 instead of the base 10 and the mounting stand 30 according to the first embodiment, and further includes a sheet member 280. Note that this embodiment is not limited to the holding member 20 holding the door 70. The door 70 may be held by a member other than the holding member 20 in the closed state.

The base 210 has a main body 211 and a pair of first walls 12. The main body 211 and the pair of first walls 12 may be integrally formed or may be separate members.

The main body 211 is a long member to which the main breaker 40 and the branch breaker 50 are attached. The main body 211 is an example of the first part.

The inner unit is detachably attached to the main body 211. In other words, the main body 211 has a configuration in which the inner unit is detachably attached. The main body 211 may be, for example, a crank-shaped rail. The main body 211 may be, for example, a din rail. Note that "detachable" means that the inner unit can be attached to and detached from the main body 211 without using fastening members such as screws. For example, "detachable" can also be said to mean that the inner unit can be attached to and detached from the main body 211 without using other members such as fastening members and tools such as screwdrivers.

As shown in Figures 10 and 11, the main body 211 has a flat plate portion 211a and a flange portion 211b.

The flat plate portion 211a connects the pair of first wall portions 12. The flat plate portion 211a extends from one of the pair of first wall portions 12 to the other. The flat plate portion 211a is elongated in the Y-axis direction, for example.

The flange portion 211b protrudes from both ends of the flat plate portion 211a in the short direction toward the positive side of the Z axis. The flange portion 211b is L-shaped when viewed from the Y axis direction.

The pair of first walls 12 have holes in the YZ plane portion (flat portion) for attaching the base 210 to a construction material. The pair of first walls 12 are arranged to sandwich the flat portion 211a when viewed from the front. As in the first embodiment, the holding member 20 may be fixed to the pair of first walls 12. When viewed from the Z axis direction (viewed from above), the pair of first walls 12 are, for example, L-shaped. The pair of first walls 12 are an example of a second portion.

The mounting base 230 is provided with an engagement portion (not shown) that corresponds to the shape of the base 210. The engagement portion may be, for example, a claw portion that corresponds to the crank shape of the base 210. In this embodiment, the engagement portion is a claw portion configured to hook onto the flange portion 211b. This allows the mounting base 230 to freely attach and detach the inner device to the base 210 simply by engaging and disengaging the flange portion 211b and the claw portion without tightening or loosening a fastening member such as a screw.

In this way, the internal unit to which the main breaker 40 and the branch breaker 50 are attached is detachably attached to the main body 211. In other words, the internal unit can be detached from the main body 211 while the main breaker 40 and the branch breaker 50 remain attached.

The base 210 as described above is H-shaped when viewed from the front. A sheet member 280 is provided in the area between the pair of first walls 12 when viewed from the front, where the main body 211 is not provided. Note that the shape of the base 210 when viewed from the front is not limited to an H-shape.

The sheet member 280 is a sheet-like member that is disposed between the pair of first wall portions 12 in a front view, and indicates the positions of holes for passing power lines through the construction material when the distribution board 200 is constructed. The sheet member 280 may be provided over the entire surface between the pair of first wall portions 12 in a front view. The sheet member 280 is, for example, transparent, but is not limited to this, and may be opaque. The sheet member 280 may be, for example, colored, or white or black. The sheet member 280 is vinyl-like. The sheet member 280 is formed from a translucent resin or the like.

The sheet member 280 is fixed to, for example, a pair of first wall portions 12. Furthermore, the sheet member 280 remains attached to the base 210 even when the distribution board 200 is attached to the construction material. The sheet member 280 may remain attached to the base 210 even after construction.

As shown in FIG. 10, the sheet member 280 has a first frame 281 and a second frame 282 that indicate the hole drilling area of the construction material. The first frame 281 and the second frame 282 (frame pattern) are formed, for example, by printing, but are not limited to this. The first frame 281 is a pattern for drilling holes in the construction material through which the power lines connected to the main breaker 40 are inserted. The second frame 282 is a pattern for drilling holes in the construction material through which the power lines connected to the branch breaker 50 are inserted. The positions and sizes of the first frame 281 and the second frame 282 can be determined from the mounting position of the internal unit, the number of power lines to be inserted, etc.

The sheet member 280 may further include information such as an explanation of the first frame 281 and the second frame 282, an explanation of the installation work, precautions, and the work sequence. The information (e.g., text or pictures) is written so that it can be read, for example, when the base 210 fixed to the construction material is viewed from the front.

The pattern for drilling holes in the construction material is not limited to a frame, as long as it is a pattern that can be visually confirmed. The pattern may be, for example, a different color for the hole area compared to other areas.

The sheet member 280 may be a transfer sheet on which the positions of the holes are printed. The sheet member 280 may be configured so that the first frame 281 and the second frame 282 can be transferred to the construction material by applying stress such as pressure to the construction material while in contact with the construction material.

When the distribution board 200 configured as described above is viewed from the back side (viewed from the negative side of the X-axis to the positive side of the X-axis), for example, a part of the internal unit is visible. Note that it is not essential that the distribution board 200 is provided with the sheet member 280.

[2-2. How to install the distribution board]
Next, a method of mounting (construction) the distribution board 200 on a construction material such as a wall will be described with reference to Fig. 12. Fig. 12 is a flow chart showing the method of mounting the distribution board 200 according to the present embodiment. It should be noted that, at the time of step S11, holes for the power lines have not yet been drilled in the construction material.

As shown in FIG. 12, first, the base 210 on which the sheet member 280 is provided is fixed to the construction material (S11). In step S11, for example, only the base 210 and the sheet member 280 are fixed to the construction material. Note that the fixing in step S11 is a permanent fixation, but it may be a temporary fixation, for example.

Next, the sheet member 280 and the construction material are drilled together (S12). In step S12, holes penetrating the sheet member 280 and the construction material are formed using a drill or the like. For example, holes penetrating the sheet member 280 and the construction material are formed along the first frame 281 and the second frame 282. That is, the hole drilling is performed with the base 210 fixed to the construction material. In other words, the hole drilling can be performed without temporarily fixing the base 210 to mark the hole drilling position on the construction material, and without marking the construction material (for example, by marking).

It is preferable that the sheet member 280 has a strength sufficient to prevent deformation during drilling.

Next, the internal unit is attached to the base 210 (S13). In step S13, for example, the mounting base 230 to which the main breaker 40 and the branch breaker 50 are attached is attached to the base 210 in a single installation operation.

Next, wiring is performed to the main breaker 40 and the branch breaker 50 (S14). Wiring is performed by connecting the power line from the hole formed in the construction material to one of the main breaker 40 and the branch breaker 50. At this time, since the base 210 is H-shaped and can prevent the power line from coming into contact with the base 210, the base 210 does not get in the way of the wiring work, and the wiring work can be performed efficiently.

[2-3. Effects, etc.]
As described above, in the distribution board 200 according to the present embodiment, the internal unit to which the main breaker 40 and the branch breakers 50 are attached is detachably attached to the base 210 .

For example, a construction method is known in which the base is temporarily attached to a construction material, the hole location is marked on the construction material, the base is removed, holes are drilled in the construction material, and the base is permanently attached after the hole drilling is completed. Conventionally, when carrying out such a construction method, the base 210 with the internal unit fixed thereto is removed to the construction material, but this is heavy and poses problems in terms of workability. On the other hand, the distribution board 200 according to the present embodiment has a configuration in which the internal unit can be detachably attached to the base 210, so that when carrying out the construction method, it is sufficient to remove the base 210 alone to the construction material. Therefore, it is possible to suppress the decrease in workability due to the weight of the base when carrying out the above construction method. It is also expected to have the effect of reducing fatigue of the worker during construction.

The base 210 also has a flat plate portion 211a (an example of a first portion) on which the main breaker 40 and the branch breaker 50 are attached, and a pair of first walls 12 (an example of a second portion) for attaching the base 210 to a construction material, the pair of first walls 12 being arranged to sandwich the flat plate portion 211a. The distribution board 200 further includes a sheet member 280 that is arranged between the pair of first walls 12 and indicates the positions of holes for passing power lines through that are to be drilled in the construction material when the distribution board 200 is installed.

Conventionally, the base would be temporarily attached to the construction material, the hole locations would be marked on the construction material, the base would be removed, the holes would be drilled in the construction material, and the base would be permanently attached after the holes were drilled. In other words, conventionally, a lot of work was required, such as attaching and detaching the base and marking. On the other hand, by providing the sheet member 280, it is only necessary to drill holes along the hole positions indicated on the sheet member 280, and marking and other work can be omitted. This improves the workability of drilling holes in construction materials when constructing a distribution board.

In addition, the sheet member 280 is transparent.

This allows the condition of the construction material to be checked through the sheet member 280 during work, making the work easier than when the construction material is not visible. This further improves the ease of drilling holes in the construction material when installing the distribution board.

The sheet member 280 may also be a transfer sheet on which the hole positions are printed.

This makes it easy to clearly indicate the location of the holes on the construction material by transferring the location of the holes onto the construction material.

The sheet member 280 also provides instructions regarding installation.

This allows the worker to carry out the work while looking at the instructions, eliminating the need for confirmation and other troublesome tasks. This further improves workability.

Other Embodiments
Although the embodiments have been described above, the present disclosure is not limited to the above-described embodiments.

For example, in the above embodiment, a pin is used as a part for rotatably attaching the door to the cover, but a rod-shaped molded product (e.g., a rod-shaped resin member) may also be used.

In addition, in the above embodiment, an example has been described in which the distribution board is equipped with a pair of holding members, but the number of holding members is not limited to two and may be three or more.

In addition, in each of the above embodiments, examples have been described in which the holding portion has an elongated shape in the Z-axis direction, but the shape of the holding portion is not limited to this. For example, the holding portion may be a protrusion (e.g., a dome-shaped protrusion), and such protrusions may be arranged side by side in the Z-axis direction.

In addition, in the above embodiment, an example has been described in which the holding mechanism provided on the holding member is convex, but it may be concave. In this case, the holding mechanism provided on the door has a shape that engages with the concave holding mechanism of the holding member, and may be, for example, a convex holding mechanism.

In addition, in the above embodiment, an example was described in which an opening for exposing the main breaker and the branch breaker is formed in the cover, but such an opening does not have to be formed.

The order in which each step is performed in the flowcharts described in the above embodiments is merely an example for specifically explaining the present disclosure, and may be an order other than the above. The order of multiple steps may be changed.

In addition, this disclosure also includes forms obtained by applying various modifications to the embodiments that a person skilled in the art may conceive, or forms realized by arbitrarily combining the components and functions of each embodiment without departing from the spirit of this disclosure.

This disclosure is useful for distribution boards equipped with doors.

LIST OF SYMBOLS 1, 200 Distribution board 10, 110, 210 Base 11, 111, 211 Main body 12 First wall 13, 113 Second wall 14 First wiring port 14a First communication portion 15 Second wiring port 15a Second communication portion 20 Holding member 21 Claw portion 22 Fitting portion 23 Restricting portion 24 Holding portion 25 Contact surface 26 Inclined surface 30, 230 Mounting base 40 Main breaker 50 Branch breaker 60 Cover 61 Convex portion 62 First opening 63 Second opening 64 Third opening 70 Door 71 Engagement portion 211a Flat plate portion 211b Flange portion 280 Sheet member 281 First frame 282 Second frame

Claims (7)

a base on which a main breaker and branch breakers are attached, the base being formed with a first wiring port for passing a power line connected to the main breaker and a second wiring port for passing a power line connected to the branch breaker;
a cover that covers the base,
the base further includes a communication portion that communicates, in a front view of the base, at least one of the first wiring port and the second wiring port with an external space around the base in the front view;
A distribution board , wherein when the base is attached to a construction material, the left- right length of the communication portion is smaller than the left -right length of at least one of the first wiring port and the second wiring port. The distribution board according to claim 1 , wherein the base is formed, in the front view, with a first communication portion that communicates between the first wiring port and the external space, and a second communication portion that communicates between the second wiring port and the external space. The distribution board according to claim 1 , wherein at least one of the first wiring port and the second wiring port is a notch formed in the base. The base has a pair of first wall portions protruding from the left -right end portions in a direction toward the cover when attached to the construction material, and a pair of second wall portions protruding from the up-down end portions intersecting the left-right direction in the up-down direction,
The distribution board according to any one of claims 1 to 3, wherein a length of the second wall portion in the direction is smaller than a length of the first wall portion in the direction. The distribution board according to any one of claims 1 to 3, wherein the base, when attached to the construction material, has a pair of wall portions protruding from the left - right ends in a direction toward the cover, and does not have a wall portion protruding in the up-down direction from an end portion in a vertical direction that intersects with the left-right direction. The distribution board according to any one of claims 1 to 5, wherein an internal unit to which the main breaker and the branch breakers are attached is detachably attached to the base. The distribution board according to any one of claims 1 to 6, wherein the base is made of metal and is directly attached to the construction material.

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