JP7386480B2 - electrical equipment - Google Patents

Description

TECHNICAL FIELD This disclosure relates to electrical equipment.

Conventionally, as electrical equipment, there is a distribution board described in Patent Document 1. The distribution board includes, for example, a box-shaped housing, an earth leakage breaker installed in the housing, and a molded circuit breaker installed in the housing.

Japanese Patent Application Publication No. 2002-081998

A distribution board has electrical equipment, including earth leakage circuit breakers and molded circuit breakers, inside the housing, but even if the electrical equipment generates abnormal heat due to poor construction, the effects will extend outside the distribution board. It would be preferable to be able to prevent this from happening, as it would allow us to ensure safety.

Accordingly, an object of the present disclosure is to provide electrical equipment that is unlikely to be affected externally even when electrical equipment generates abnormal heat.

In order to solve the above problems, the electrical equipment according to the present disclosure is an electrical equipment whose casing is installed on a wall, which is fixed to the wall, and whose back side is the wall side in the depth direction of the casing. The lower side in the height direction within the casing, including the back cover that constitutes the outer shell of the case, and the lower plate portion that protrudes in the depth direction from the bottom side of the back cover and extends from one side in the width direction to the other side. an electrical device that is located above the lower plate in the casing in the height direction and includes a plurality of electronic components; and a front side of the electrical device that is opposite to the back side in the depth direction. protection including a lower gap prevention part that is arranged to cover the lower plate part and is located at the same height as the lower plate part or lower than the lower plate part in the height direction without leaving a gap in the depth direction with respect to the lower plate part A cover.

Note that the height direction may be defined as the vertical direction when the electrical equipment is properly installed on the wall, and the depth direction is defined as the normal to the wall when the electrical equipment is properly installed on the wall. It may also be defined as the direction. Further, the width direction may be defined as an orthogonal direction that is orthogonal to both the vertical direction and the normal direction when the electrical equipment is properly installed on the wall.

According to the electrical equipment according to the present disclosure, even if the electrical equipment generates abnormal heat, the effect is unlikely to reach the outside.

FIG. 1 is a perspective view of a distribution board that constitutes an embodiment of the electrical equipment of the present disclosure. FIG. 2 is an exploded perspective view of the main components of the distribution board. It is a perspective view when the frame of the front cover of the electricity distribution board is viewed from the back side. FIG. 3 is a perspective view of the equipment main body of the distribution board. FIG. 3 is a perspective view of the back cover of the distribution board when viewed from the front side. FIG. 2 is an enlarged perspective view of the distribution board main body when viewed diagonally from above. FIG. 2 is an enlarged perspective view of a protection plate inside the distribution board. It is a perspective view showing a distribution board main body and an inner protection plate fixed to it. 9 is a sectional view taken along line BB in FIG. 8. FIG. FIG. 7 is a perspective view of the distribution board main body viewed from a different angle from the view shown in FIG. 6;

Embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. Note that when a plurality of embodiments, modifications, etc. are included below, it is assumed from the beginning that a new embodiment will be constructed by appropriately combining their characteristic parts. Furthermore, in the following embodiments, the same components are denoted by the same reference numerals in the drawings, and overlapping explanations will be omitted. Furthermore, the plurality of drawings include schematic diagrams, and the dimensional ratios of each member, such as length, width, and height, do not necessarily match between different drawings. Furthermore, among the constituent elements described below, constituent elements that are not described in the independent claim indicating the most significant concept are optional constituent elements and are not essential constituent elements. In addition, in this specification, when the word "abbreviation" is used, it is used in the same meaning as the word "roughly speaking", and the requirement "omitted" means that if a person looks roughly like... It is filled. For example, the requirement of being approximately circular is satisfied if the person looks approximately circular. Furthermore, in the drawings and the following description, the X direction indicates the depth direction, the Y direction indicates the width direction, and the Z direction indicates the height direction. The X direction, Y direction, and Z direction are orthogonal to each other.

In addition, in the following explanation, the upper side and upper side refer to the upper side and upper side in the Z direction (vertical direction) when the distribution board 1 is properly installed on the wall, and the lower side and lower side refer to the distribution The lower side in the Z direction (vertical direction) is shown when the panel 1 is properly installed on the wall. In addition, the front side refers to the side (front side) opposite to the wall side in the X direction (normal direction to the wall) when the distribution board 1 is properly installed on the wall, and the back side refers to the side (front side) opposite to the wall side in the The wall side (rear side) in the X direction (normal direction to the wall surface) is shown when the board 1 is properly installed on the wall.

FIG. 1 is a perspective view of a power distribution board 1 that constitutes an embodiment of the electrical equipment of the present disclosure, and FIG. 2 is an exploded perspective view of the main components of the power distribution board 1. As shown in FIG. 1, the distribution board 1 has a box shape and is installed, for example, on a wall (not shown) having a wall surface including the vertical direction in a building (not shown). As shown in FIG. 2, the electricity distribution board 1 includes a front cover 10 made of resin, an inner protection plate 30 as a protective cover, and a electricity distribution board main body 50. As shown in FIGS. 1 and 2, the front cover 10 has a frame 11 and a lid 18. The lid 18 is pivotable relative to the frame 11 in the direction indicated by arrow A in FIG. 1, for example, by a known pivotable structure such as a hinge.

As shown in FIG. 1, the lid 18 has a notch 12 in the center in the Y direction that opens downward in the Z direction when the distribution board 1 is properly installed on the wall. When a person turns the lower side of the lid 18 upward using the notch 12, an opening 14 (see FIG. 3) appears on the front side of the distribution board 1 in the X direction, allowing the person to operate the distribution board 1. The section (switch) 51 (see FIG. 4) becomes accessible. FIG. 3 is a perspective view of the frame 11 of the front cover 10 when viewed from the back side. As shown in FIG. 3, the frame 11 has a plurality of locking portions 16, and is locked in a predetermined position of the distribution board main body 50 (see FIG. 2) using the plurality of locking portions 16. . Note that the front cover 10 may be fixed to the distribution board main body 50 by a fixing means, for example, by a fastening member, or may be fixed to the distribution board main body 50 using a snap fit. may be fixed to

Referring to FIG. 2, the inner protection plate 30 is made of metal, is fixed to the back side (inside) of the front cover 10 with a fastening member, etc., and cannot be attached or detached by a person without using a tool. The front side and the back side of the inner protective plate 30 are metal protective surfaces to prevent fire caused by an accident in the electrical equipment 62, and the inner protective plate 30 is provided to ensure complete safety. The inner protection plate 30 has a plurality of through holes 31 at locations overlapping with the operating section 51 provided on the distribution board main body 50 when viewed from the X direction, and when the lid 18 is turned upward, a person can The operating section 51 can be operated through the through hole 31.

As shown in FIG. 2, the distribution board main body 50 includes a device main body 60 and a back cover 90, the device main body 60 is fixed to the back cover 90, and the back cover 90 is fixed to a wall (not shown). . FIG. 4 is a perspective view of the device main body 60. As shown in FIG. 4, the device main body 60 includes a device base 61, an electrical device 62 including a plurality of electronic components, an upper protection plate 65, and a lower protection plate 75. The electrical equipment 62 includes, for example, an earth leakage breaker or a molded circuit breaker (safety breaker). Electrical equipment 62 may further include a current limiter (ampere breaker). The equipment base 61 is a metal plate, and the electrical equipment 62 is fixed to the equipment base 61. The device base 61 has a flat plate portion 61a that extends substantially parallel to the YZ plane, and the electric device 62 can be connected to the device by fixing the flat plate portion 61a to the bottom 91 of the back cover 90 (see FIG. 5) with a plurality of screws 95. It is fixed to the back cover 90 via the base 61.

The upper protection plate 65 is made of metal, and is formed, for example, by simply bending a metal plate. As shown in FIG. 4, the upper protection plate 65 extends from one side to the other side in the Y direction. The upper protection plate 65 includes a plate-shaped upper device covering plate portion 66 that protrudes from the front side and extends in the Y direction, and a plate-shaped upper device covering plate portion 66 that protrudes downward from the back side of the upper device covering plate portion 66 and extends in the Y direction. It has a mounting plate portion 67. The upper device covering plate section 66 constitutes an upper side plate section. Although the upper device covering plate portion 66 may be inclined at an acute angle with respect to the XY plane, it is preferable that it extends substantially parallel to the XY plane as in this embodiment. The upper device covering plate portion 66 is located above the electrical device 62 and covers the electrical device 62 in the Y direction over the entire area or substantially the entire area in the Y direction. The mounting plate portion 67 extends substantially parallel to the YZ plane. The flat plate part 61a of the device base 61 has a mounting part 61b that overlaps the mounting plate part 67 when viewed from the front side, the mounting part 61b has a through hole, and the mounting plate part 67 also has a through hole. A through hole is provided at a location where they overlap in the X direction. By inserting the screws 96 into the through-holes of the mounting part 61b and the through-hole of the mounting plate part 67 and tightening them into the bottom part 91 of the back cover 90, the upper protection plate 65 is precisely positioned with respect to the equipment base 61. It is fixed to the back cover 90 in this state.

The lower protection plate 75 is made of metal, and is formed, for example, by simply bending a metal plate. The lower protection plate 75 extends from one side to the other side in the Y direction. The lower protection plate 75 includes a plate-shaped lower device covering plate portion 76 that protrudes from the front side and extends in the Y direction, and a plate-shaped lower device covering plate portion 76 that protrudes upward from the back side of the lower device covering plate portion 76 and extends in the Y direction. It has a mounting plate portion 77. The lower device covering plate portion 76 constitutes a lower plate portion. Although the lower device covering plate portion 76 may be inclined at an acute angle with respect to the XY plane, it is preferable that it extends substantially parallel to the XY plane as in this embodiment. The lower equipment covering plate part 76 is located below the electrical equipment 62 and covers the electrical equipment 62 in the Y direction over the entire area or substantially the entire area in the Y direction. The mounting plate portion 77 extends substantially parallel to the YZ plane. The flat plate part 61a of the device base 61 has a mounting part 61c that overlaps the mounting plate part 77 when viewed from the front side, the mounting part 61c has a through hole, and the mounting plate part 77 also fits into the through hole. A through hole is provided at a location where they overlap in the X direction. By inserting the screws 97 into the through-holes of the mounting part 61c and the through-hole of the mounting plate part 77 and tightening them into the bottom part 91 of the back cover 90, the lower protection plate 75 is precisely positioned with respect to the equipment base 61. It is fixed to the back cover 90 in this state.

The upper device covering plate portion 66 and the lower device covering plate portion 76 face each other in the Z direction while covering the electrical device 62 on both sides in the Z direction. By providing such upper and lower equipment covering plate parts 66 and 76, even if the electrical equipment 62 ignites due to poor construction of the electrical equipment 62, the flame will flow upward in the upper equipment covering plate part 66. It is possible to dam up the fire and effectively suppress the effects of fire from reaching the outside world. In addition, in such a case, even if the high-temperature molten fluid flows downward, the lower equipment covering plate 76 can prevent the molten fluid from flowing downward, reducing the influence of ignition. It is possible to effectively prevent this from spreading to the outside world. Therefore, even if the electrical equipment 62 catches fire, the influence of the fire can be effectively suppressed from reaching the outside, and safety can be ensured.

FIG. 5 is a perspective view of the back cover 90 when viewed from the front side. As shown in FIG. 5, the back cover 90 constitutes an outer shell on the back side of the housing 15 in the X direction. The back cover 90 is made of resin. The back cover 90 has an integral annular wall portion 93 that projects toward the front side. The annular wall 93 defines at least a portion of the back side of the internal chamber 17 of the housing 15 . The annular wall portion 93 has an upper wall portion 93a and a lower wall portion 93b that extend substantially parallel to the Y direction and face each other at an interval in the Z direction. Further, the annular wall portion 93 includes a first side wall portion 93c and a second side wall portion 93d that extend substantially parallel to the Z direction and face each other at an interval in the Y direction. Further, the back cover 90 has a bottom portion 91 that is connected to the back side of the annular wall portion 93 and extends substantially parallel to the YZ plane.

Next, a structure for fixing the inner protection plate 30 to the distribution board main body 50 will be described. FIG. 6 is an enlarged perspective view of the distribution board main body 50. As shown in FIG. 6, a first end 68 located on the first side in the Y direction and a second end 69 located on the second side in the Y direction of the upper device covering plate portion 66 are located at the center. It is located lower than the central portion 70 located at , and has a longer width (dimension in the X direction). Each of the first and second end portions 68, 69 is connected to the central portion 70 via a stepped portion. The upper protection plate 65 has a protrusion 68 a that protrudes upward from the front side of the first end 68 and a protrusion 69 a that protrudes upward from the front side of the second end 69 . Further, the central portion 70 has a front side plate portion 70a that protrudes upward on the front side and extends in the Y direction. In the present embodiment, the upper device covering plate portion 66 has a plurality of front side plate portions 70a located at intervals in the Y direction, and the upper device covering plate portion is arranged from the first side of the upper device covering plate portion. It may have only one front side plate extending in the Y direction to the second side.

FIG. 7 is an enlarged perspective view of the inner protection plate 30. As shown in FIG. 7, the inner protection plate 30 has a covering plate part 33, an upper flat plate part 34, a connecting part 35, and a lower flat plate part 36 as a lower gap prevention part. The covering plate portion 33 has the above-mentioned through hole 31, extends substantially parallel to the YZ plane, and covers the front side of the electrical device 62. The upper flat plate part 34 protrudes rearward from the upper edge of the covering plate part 33 and extends substantially parallel to the XY plane. Each of the first end 38 located on the first side in the Y direction and the second end 39 located on the second side in the Y direction of the upper flat plate part 34 has a width smaller than that of the central part 40 located in the center. (dimension in the X direction) is longer. The first and second ends 38, 39 have through holes 38a, 39a, respectively.

The connecting portion 35 extends downward from the lower edge of the covering plate portion 33 . Specifically, the connecting portion 35 is located on the back side in the X direction as it goes lower in the Z direction, and is inclined with respect to the YZ plane. The lower flat plate portion 36 extends from the lower edge of the connecting portion 35 to the back side. The lower flat plate portion 36 extends substantially parallel to the XY plane. The inner protection plate 30 further includes a back side plate portion 41. The back side plate part 41 protrudes upward from the back side of the central part 40, extends in the Y direction, and extends substantially parallel to the YZ plane.

In this embodiment, the lower flat plate part 36 was connected to the covering plate part 33 via the connecting part 35, but the lower flat plate part was connected to the lower side of the covering plate part without the connecting part. It may extend from the edge. Furthermore, although a case has been described in which the lower flat plate part extends substantially parallel to the XY plane, the lower flat plate part may be inclined at an acute angle with respect to the XY plane.

FIG. 8 is a perspective view showing the distribution board main body 50 and the inner protection plate 30 fixed thereto. As shown in FIG. 8, the protrusion 68a is inserted into the through hole 38a until the lower surface of the first end 38 contacts the upper protective plate 65, and until the lower surface of the second end 39 contacts the upper protective plate 65. , the protrusion 69a is inserted into the through hole 39a. Further, in this state, the inner protection plate 30 is fixed to a stationary portion 47 (see FIG. 4) that is stationary with respect to the housing 15 with a screw 45 extending approximately in the X direction. More specifically, the cover plate portion 33 of the inner protection plate 30 has a screw hole, and the stationary portion 47 also has a screw hole 48 (see FIG. 4). The inner protection plate 30 is fixed to the stationary part 47 by tightening the screws 45 in the order of the screw hole of the covering plate part 33 and the screw hole 48 of the stationary part 47. Note that the stationary portion 47 may be a part of the housing 15 or may be a part of a member other than the housing.

As shown in FIG. 8, with the inner protection plate 30 fixed to the stationary part 47, the front side plate part 70a of the upper protection plate 65 contacts the back side plate part 41 of the inner protection plate 30 without any gap. As a result, the upper side of the electrical equipment 62 can be reliably closed with the inner protection plate 30 and the inner protection plate 30, and even if the electrical equipment 62 catches fire, flames can be reliably prevented from reaching above the upper protection plate 65. can.

In addition to FIG. 8, with reference also to FIG. 9, that is, the cross-sectional view taken along line BB in FIG. It is located below the lower equipment covering plate part 76 in the Z direction without being spaced apart from the lower equipment covering plate part 76 in the X direction. Furthermore, the tip of the lower flat plate portion 36 on the back side in the X direction is located on the back side in the X direction than the tip of the front side of the lower device covering plate portion 76 in the X direction. Therefore, even if the electrical equipment 62 ignites and the high-temperature molten fluid flows downward while the inner protection plate 30 is fixed to the stationary part 47, the molten fluid will flow downward. This can be effectively stopped by the lower flat plate part 36 and the lower equipment covering plate part 76. Therefore, even if the electric device 62 catches fire, the influence of the fire can be effectively suppressed from reaching the outside.

5 and 9, the back cover 90 has the annular wall portion 93 that defines at least a portion of the internal chamber 17 of the housing 15, as described above, and the annular wall portion 93 is arranged in the Y direction. It has an upper side wall part 93a and a lower side wall part 93b which extend substantially parallel to each other and face each other at an interval in the Z direction. Further, as shown in FIG. 9, an upper space 88 exists between the upper device covering plate portion 66 and the upper wall portion 93a of the back cover 90, and an upper space 88 exists between the lower device covering plate portion 76 and the upper wall portion 93a of the back cover 90. A lower space 89 exists between the lower wall portion 93b and the lower wall portion 93b. The maximum dimension x ₁ of the upper space 88 in the Z direction is larger than the maximum dimension x ₂ of the lower space 89 in the Z direction.

Therefore, it is easy to insulate the electrical equipment 62 from the outside in the upper space 88 and the lower space 89, and even if the electrical equipment 62 generates abnormal heat, it is difficult to have an effect on the outside. Furthermore, since the maximum dimension x ₁ in the Z direction in the upper space 88 is larger than the maximum dimension x ₂ in the Z direction in the lower space 89, the upper space is likely to become overheated when the electrical equipment 62 generates abnormal heat. 88 can be made to have excellent insulation properties, making it possible to ensure even greater safety.

FIG. 10 is a perspective view of the distribution board main body 50 when viewed diagonally from above. As shown in FIG. 10, the front end of the upper protection plate 65 in the X direction is located on the back side in the X direction from the front end 99 of the back cover 90 in the X direction. Further, the front end of the lower protection plate 75 in the X direction is also located on the back side of the front end 99 of the back cover 90 in the X direction. Therefore, even if the upper protection plate 65 and the lower protection plate 75 are installed, it will not become difficult for people to perform construction work or maintenance work on the electrical equipment 62 with these members 65, 75, and The work can be carried out smoothly.

Note that all metal parts within the housing 15 are electrically connected to each other. Further, the distribution board 1 includes members 65 and 75 that cover the upper and lower sides of the electrical equipment 62 in the Y direction, but does not include members that cover the sides of the electrical equipment 62 in the Y direction in the Z direction. . This is because the high-temperature flame and molten fluid flow in the Z direction, so it is not very meaningful to provide a member that covers the sides of the electric device 62 in the Y direction in the Z direction. In this embodiment, the distribution board 1 includes members 65 and 75 that cover the upper and lower sides of the electrical equipment 62 in the Y direction, and members that cover the sides of the electrical equipment 62 in the Y direction in the Z direction. Since there is no need for such equipment, the distribution board 1 with high safety can be manufactured at a much lower cost.

As described above, the casing 15 of the distribution board 1 is installed on the wall. The distribution board 1 also includes a back cover 90 that is fixed to a wall and constitutes an outer shell on the back side of the casing 15, and a back cover 90 that protrudes from the bottom side of the back cover 90 in the X direction and on one side in the Y direction. A lower protection plate 75 is provided, which includes a lower device covering plate portion (lower plate portion) 76 extending from the lower side to the other side, and is disposed on the lower side in the Z direction within the housing 15 . Furthermore, the distribution board 1 is disposed above the lower equipment covering plate part 76 in the Z direction within the housing 15, and includes an electrical equipment 62 including a plurality of electronic components. Moreover, the distribution board 1 is arranged so as to cover the front side of the electrical equipment 62 opposite to the back side in the An inner protection plate (protective cover) 30 including a lower flat plate part (lower gap prevention part) 36 located below the side equipment covering plate part 76 is provided.

Therefore, even if the electrical equipment 62 ignites due to poor construction of the electrical equipment 62 and the high-temperature molten fluid flows downward, the lower equipment covering plate 76 prevents the molten fluid from flowing downward. It is possible to dam up the fire and prevent the impact of the fire from reaching the outside. Therefore, even if the electrical equipment 62 ignites, the influence of the ignition can be suppressed from reaching the outside. Furthermore, since the lower equipment covering plate portion 76 can prevent heat from the electrical equipment 62 from reaching the outer shell, the temperature of the outer shell during normal operation can also be reduced.

The distribution board 1 also has an upper equipment covering plate that protrudes from the bottom side of the back cover 90 in the X direction, extends from one side to the other side in the Y direction, and is located above the electrical equipment 62 in the Z direction. An upper protection plate (upper protection member) 65 including the portion 66 and disposed on the upper side in the Z direction within the housing 15 may be provided. Further, the upper protection plate 65 has a plurality of protrusions 68a, 69a that protrude upward in the Z direction and are arranged at intervals in the Y direction, and the inner protection plate 30 engages the plurality of protrusions 68a, 69a. An upper flat plate part 34 having a plurality of through holes 38a and 39a for stopping the screw may be provided on the upper side in the Z direction. Further, the inner protection plate 30 may be fixed to a stationary portion 47 that is stationary with respect to the housing 15 with one or more screws 45 extending approximately in the X direction. Further, the tip of the lower flat plate portion 36 on the back side in the X direction may be located on the back side in the X direction than the tip of the front side of the lower device covering plate portion 76 in the X direction.

According to this configuration, even if the electrical equipment 62 ignites due to poor construction of the electrical equipment 62, etc., the upper equipment covering plate portion 66 can block the flame from flowing upward, and the influence of the ignition is reduced to the outside. can be effectively suppressed. Further, since the upper device covering plate portion 66 can prevent heat from the electrical device 62 from reaching the outer shell, the temperature of the outer shell during normal operation can also be reduced.

Moreover, the upper protection plate 65 can be easily and reliably fixed to the distribution board main body 50 using the hook structure including the protrusions 68a, 69a and the through holes 38a, 39a, and the screws 45. Furthermore, the tip of the back side in the X direction of the lower flat plate part 36 is located on the back side in the X direction than the tip of the front side in the Since the side flat plate portion 36 and the lower device covering plate portion 76 have a portion that overlaps with each other, the ability of the lower device covering plate portion 76 to prevent the molten fluid from moving downward can be further improved.

Further, the upper protection plate 65 may have a front side plate part 70a that projects upward in the Z direction on the front side in the X direction and extends in the Y direction, and the inner protection plate 30 has a front side plate part 70a on the back side in the X direction. It may have a back side plate part 41 that protrudes upward in the direction, extends in the Y direction, and comes into contact with the front side plate part 70a.

According to this configuration, the upper side of the electrical device 62 can be reliably closed by the inner protection plate 30 and the inner protection plate 30. Therefore, even if the electrical equipment 62 catches fire, it can be reliably prevented from reaching above the upper protection plate 65.

Note that the present disclosure is not limited to the above-described embodiments and their modifications, and various improvements and changes can be made within the scope of the claims of the present application and their equivalents.

For example, in the above embodiment, the lower flat plate part 36 of the inner protection plate 30 is spaced apart from the lower equipment covering plate part 76 of the lower protection plate 75 in the The case where the position is lower than that has been explained. However, the lower gap prevention part of the protective cover may be located at the same height as the lower plate part in the Z direction without being spaced apart from the lower plate part of the lower protective member in the X direction, and The back end of the lower gap prevention part and the front end of the lower plate part of the lower protection member may be in contact with each other.

Further, the front end of the upper protection plate 65 in the X direction is on the back side in the X direction than the front end of the back cover 90 in the X direction, and the front end of the lower protection plate 75 in the The case where the tip exists on the back side in the X direction rather than the front end in the X direction has been described. However, the front end of the upper protection member in the X direction may be located at the same position in the X direction as the front end of the back cover in the X direction. Further, the front end of the lower protection member in the X direction may be located at the same position in the X direction as the front end of the back cover in the X direction. Alternatively, the front end of the upper protection member in the X direction may be located closer to the front side in the X direction than the front end of the back cover in the X direction. Further, the front end of the lower protection member in the X direction may also be located closer to the front side in the X direction than the front end of the back cover in the X direction.

Furthermore, although the case has been described in which the front side plate part 70a of the upper protection plate 65 comes into contact with the back side plate part 41 of the inner protection plate 30, the front side plate part of the upper protection member does not come into contact with the back side plate part of the protective cover. You can. Furthermore, although a case has been described in which the maximum dimension x ₁ in the Z direction in the upper space 88 is larger than the maximum dimension x ₂ in the Z direction in the lower space 89, the maximum dimension x ₁ in the Z direction in the upper space is , does not have to be larger than the maximum dimension x ₂ in the Z direction in the lower space. In the first place, the electrical equipment of the present disclosure does not need to include the upper protection member.

Furthermore, the case has been described in which the upper protection plate 65, the lower protection plate 75, and the inner protection plate 30 are made of metal, and the front cover 10 and the back cover 90 are made of resin. However, the upper protection member, the lower protection member, and the protection cover may be made of resin, and the front cover and the back cover may be made of metal.

In addition, although we have explained the case where the electrical equipment is a distribution board, the electrical equipment may be any device as long as it is installed on a wall and has electrical equipment.For example, it may be an intercom base unit or a slave unit. Alternatively, it may be an information processing device that has a display section such as a liquid crystal panel and an operation section, executes operational management of a plurality of devices, and is installed on a wall.

1 Distribution board, 15 Housing, 17 Internal chamber, 30 Inner protection plate, 34 Upper flat plate part, 36 Lower flat plate part, 38a, 39a Through hole, 41 Back side plate part, 45,95,96,97 Screw, 47 Stationary part, 50 Distribution board main body, 60 Equipment main body, 61 Equipment base, 62 Electrical equipment, 65 Upper protection plate, 66 Upper equipment covering plate part, 68a, 69a Projection, 70a Front side plate part, 75 Lower protection plate, 76 Lower equipment cover plate section, 88 upper space, 89 lower space, 90 back cover, 93 annular wall section, 93a upper wall section, 93b lower wall section, x ₁ maximum dimension in Z direction of upper space, x ₂ lower side Maximum dimension of the space in the Z direction.

Claims (6)

An electrical equipment whose casing is installed on a wall,
a back cover that is fixed to the wall and constitutes an outer shell on the back side of the casing that is on the wall side in the depth direction;
a lower plate portion that protrudes from the bottom side of the back cover in the depth direction and extends from one side to the other side in the width direction ; and a plate that protrudes upward from the back side of the lower plate portion and extends in the width direction. a lower protection member that includes a shaped mounting plate portion and is disposed on the lower side in the height direction within the housing;
an electrical device disposed above the lower plate portion in the height direction in the housing and including a plurality of electronic components;
It is arranged to cover the front side of the electrical equipment opposite to the back side in the depth direction, and has the same height as the lower side plate part in the height direction without leaving a gap in the depth direction with respect to the lower side plate part. a protective cover including a lower gap prevention part located upside down or lower than the lower plate part;
Equipped with electrical equipment. An electrical equipment whose casing is installed on a wall,
a back cover that is fixed to the wall and constitutes an outer shell on the back side of the casing that is on the wall side in the depth direction;
a lower side disposed on the lower side in the height direction within the housing, including a lower plate portion that protrudes from the bottom side of the back cover in the depth direction and extends from one side in the width direction to the other side; a protective member;
an electrical device disposed above the lower plate portion in the height direction in the housing and including a plurality of electronic components;
It is arranged to cover the front side of the electrical equipment opposite to the back side in the depth direction, and has the same height as the lower side plate part in the height direction without leaving a gap in the depth direction with respect to the lower side plate part. a protective cover including a lower gap prevention part located upside down or lower than the lower plate part;
an upper plate portion that protrudes from the bottom side of the back cover in the depth direction, extends from one side to the other side in the width direction, and is located above the electrical device in the height direction; an upper protection member disposed above the height direction within the housing;
Equipped with electrical equipment. An electrical equipment whose casing is installed on a wall,
a back cover that is fixed to the wall and constitutes an outer shell on the back side of the casing that is on the wall side in the depth direction;
a lower side disposed on the lower side in the height direction within the housing, including a lower plate portion that protrudes from the bottom side of the back cover in the depth direction and extends from one side in the width direction to the other side; a protective member;
an electrical device disposed above the lower plate portion in the height direction in the housing and including a plurality of electronic components;
It is arranged to cover the front side of the electrical equipment opposite to the back side in the depth direction, and has the same height as the lower side plate part in the height direction without leaving a gap in the depth direction with respect to the lower side plate part. a protective cover including a lower gap prevention part located upside down or lower than the lower plate part,
an upper plate portion that protrudes from the bottom side of the back cover in the depth direction, extends from one side to the other side in the width direction, and is located above the electrical device in the height direction; an upper protection member disposed above the height direction within the housing;
The upper protection member has a plurality of protrusions that protrude upward in the height direction and are spaced apart in the width direction,
The protective cover has an upper flat plate portion on the upper side in the height direction that has a plurality of through holes that lock the plurality of protrusions,
The protective cover is fixed to a stationary part that is stationary with respect to the casing by a fastening member that extends substantially in the depth direction,
The electrical equipment, wherein a tip of the back side in the depth direction of the lower gap prevention part is located closer to the back side in the depth direction than a tip of the front side of the lower plate part in the depth direction. The upper protection member has a front side plate portion on the front side in the depth direction that projects upward in the height direction and extends in the width direction,
The electrical appliance according to claim 3 , wherein the protective cover has a back side plate portion on the back side in the depth direction that protrudes upward in the height direction, extends in the width direction, and abuts the front side plate portion. Facility. the back cover has an annular wall portion defining at least a portion of an internal chamber of the casing;
The annular wall portion has an upper wall portion and a lower wall portion that extend substantially parallel to the width direction and face each other at an interval in the height direction,
An upper space exists between the upper plate part and the upper wall part, and a lower space exists between the lower plate part and the lower wall part,
The electrical equipment according to claim 3 or 4 , wherein the maximum dimension in the height direction in the upper space is larger than the maximum dimension in the height direction in the lower space. The front end of the upper protection member in the depth direction is located at the same position in the depth direction as the front end of the back cover in the depth direction, or is located further in the depth direction than the front end of the back cover. exists on the back side of
The front end of the lower protection member in the depth direction is located at the same position in the depth direction as the front end of the back cover, or is located on the back side in the depth direction from the front end of the back cover. The electrical equipment according to any one of claims 3 to 5 .

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