JP6365925B2 - Distribution board housing and distribution board - Google Patents

Description

  The present invention relates to a distribution board housing that houses a breaker therein, and a distribution board including the housing.

  Conventionally, a distribution board accommodates internal devices such as a main breaker and a plurality of branch breakers provided on each main branch circuit that branches from the main circuit connected to the main circuit breaker and supplies power to the electrical equipment. (See, for example, Patent Document 1).

  The housing of such a distribution board has a bottomed cylindrical housing base and a cover for closing the opening of the housing base. The internal device is housed in a housing space formed by the housing base and the cover. Further, the cover is formed with a window for exposing the handle (operating portion) of the main breaker and the handle of the branch breaker so that the handle can be operated.

JP 2009-268252 A

  By the way, since various internal devices such as the main breaker housed in the housing of the distribution board have heat, it is necessary to form a slit portion in the housing of the distribution board and exhaust (exhaust heat) outside the housing. As the formation position of the slit portion of the housing, it can be considered that the slit portion is provided on the upper side surface or the rear side of the housing in the vertical direction when the distribution board is attached. However, for example, if a slit portion is formed on the upper side surface in the vertical direction of the housing, dust or the like may enter the housing. Further, if the slit portion is provided on the back surface, dust adheres to the wall surface, and the wall surface may become dirty.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a housing for a distribution board and a distribution board that can suppress the infiltration of dust and the adhesion of dirt to a wall surface. It is to provide.

  In order to solve the above problems, a distribution board housing is a distribution board capable of accommodating a main breaker in a housing space including a bottomed cylindrical housing base and a cover for closing an opening of the housing base. The housing base has a first slit portion formed in a mode of opening upward above the cylindrical portion, and at least in the opening direction with respect to the first slit portion above the first slit portion. It has the 1st shielding part of the aspect which overlaps partially, It is characterized by the above-mentioned.

  In the above configuration, a plurality of the first slit portions are arranged in parallel, a plurality of the first shielding portions are arranged in parallel, and the first slit portions are not overlapped with the first slit portions in the opening direction. It is preferable to have a 2nd shielding part of the aspect which has a 2nd slit part and overlaps with the said 2nd slit part at least partially in the said opening direction between said 1st slit parts.

  In order to solve the above-mentioned problem, the distribution board includes a distribution board housing having any one of the above-described structures and a breaker accommodated in the distribution board housing.

  According to the housing and the distribution board of the distribution board of the present invention, it is possible to suppress adhesion of dirt to the wall surface while suppressing intrusion of dust.

It is a perspective view of a distribution board in the state where a door in an embodiment was closed. It is a perspective view of the distribution board in the state which opened the door in the same as the above. It is a perspective view of a distribution board in the state where a door in the same was omitted. (A) is a front view of the housing same as the above, (b) is a partial enlarged view of (a). (A) is a side view of the housing same as the above, (b) is a partially enlarged view of (a). It is a top view of the housing base in the same as the above. It is a top view of the housing cover in the same as the above. It is a perspective view for demonstrating the slit part structure for exhaust heat of the housing base in the same as the above. It is a perspective view for demonstrating the slit part structure for exhaust heat of the housing base in the same as the above. (A) is a perspective view for demonstrating the slit part structure for exhaust heat of a housing base in the same as the above, (b) is 10B-10B sectional drawing of (a), (c) is 10C of (a). It is -10C sectional drawing.

Hereinafter, an embodiment of a distribution board will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the distribution board 10 of the present embodiment includes a housing 11 having an accommodation space, and internal accommodation items 51 such as a main breaker 52 and a branch breaker 53 accommodated in the accommodation space of the housing 11. And have. In the following description, the vertical direction when the distribution board 10 is attached to the wall surface of the house is the vertical direction of the distribution board, and the direction perpendicular to the wall surface is the front-rear direction, the vertical direction, and the distribution board 10. The direction orthogonal to the front-rear direction will be described as the left-right direction of the distribution board 10. In some of the drawings, each direction is indicated with an arrow.

  As shown in FIGS. 2 and 3, the housing 11 includes a bottomed rectangular cylindrical housing base 12 and a bottomed rectangular cylindrical housing cover 13 that covers the opening 12 a of the housing base 12.

As shown in FIGS. 3 and 6, the housing base 12 has a bottom portion 21 and a rectangular tubular portion 22 extending from an edge portion of the bottom portion 21 and is configured to have a bottomed rectangular tubular shape.
As shown in FIGS. 3 and 6, the bottom portion 21 of the housing base 12 has an insertion hole 21 a for inserting an electric wire formed in a substantially rectangular shape at the approximate center thereof. A plurality of guide holes 21b are juxtaposed in the left-right direction on both the upper and lower sides of the insertion hole 21a across the bottom portion 21. The same number of guide holes 21b are formed on both the upper side and the lower side of the insertion hole 21a.

  As shown in FIGS. 3 and 6, the rectangular cylindrical portion 22 of the housing base 12 is constituted by four side plate portions 23 and 24 extending from the edge portion of the bottom portion 21. The rectangular cylindrical portion 22 has an opening 12 a at the end opposite to the bottom portion 21. The four side plate portions 23 and 24 constituting the rectangular cylindrical portion 22 are composed of two long side plate portions 23 extending in the left-right direction and two short side plate portions 24 extending in the vertical direction.

  As shown in FIGS. 5A and 6, the long side plate portion 23 positioned relatively upward of the two long side plate portions 23 protrudes in a direction perpendicular to the plate surface on the outer surface thereof. There are one protrusion 23t on each side in the longitudinal direction (two in total). The long side plate portion 23 positioned relatively upward in the long side plate portion 23 has slit portions S <b> 1 and S <b> 2, which will be described later, for discharging heat in the housing 11.

  As shown in FIGS. 4 (a), 5 (a), and 6, each side plate portion 24 constituting the rectangular cylindrical portion 22 has a protrusion 24t that protrudes in the direction perpendicular to the plate surface on its outer surface. There is one on each side of the direction (two in total). The protruding direction of the protrusion 23t of the side plate portion 23 and the protruding direction of the protrusion 24t of the side plate portion 24 are substantially orthogonal to each other.

  As shown in FIGS. 4B and 5B, the protrusions 23t and 24t of the side plate portions 23 and 24 are formed in the left-right direction with respect to the housing cover 13 when the housing cover 13 is assembled to the housing base 12. Or it has the length which protrudes outside in the up-down direction.

As shown in FIGS. 3 and 7, the housing cover 13 has a bottom portion 31 and a rectangular tubular portion 32 extending from the edge of the bottom portion 31 and is configured to have a bottomed rectangular tubular shape. .
As shown in FIGS. 3 and 7, the bottom 31 of the housing cover 13 has an opening 31 a formed in a substantially rectangular shape at the approximate center thereof. In the opening 31a, a plurality of extending pieces 31b extending in the up-down direction are arranged in parallel in the left-right direction on both the upper and lower sides across the opening 31a. Various covers such as a main breaker cover C1 and a branch breaker cover C2 are attached to the extended piece 31b.

  As shown in FIG. 7, the rectangular cylindrical portion 32 of the housing cover 13 is constituted by four side plate portions 33 and 34 extending from the edge portion of the bottom portion 31. The rectangular cylindrical portion 32 has an opening 32 a at the end opposite to the bottom portion 31. The four side plate portions 33, 34 constituting the rectangular cylindrical portion 32 are composed of two long side plate portions 33 extending in the left-right direction and two short side plate portions 34 extending in the vertical direction.

  As shown in FIGS. 6 and 7, the two long side plates 33 extending from the vertical end of the bottom 31 have a length (inside dimension) Db1 between the inner surfaces of 2 on the housing base 12 side. The length (outer dimension) Da1 between the outer surfaces of the two long side plate portions 23 is set longer. The two short side plates 34 extending from the left and right ends of the bottom 31 have a length (inner dimension) Db2 between the inner surfaces between the outer surfaces of the two short side plates 24 on the housing base 12 side. It is set longer than the length (outer dimension) Da2. For this reason, the rectangular cylindrical portion 32 of the housing cover 13 is configured to have a slightly larger opening area than the rectangular cylindrical portion 22 of the housing base 12. Thus, the housing cover 13 is assembled to the housing base 12 in a direction in which the bottom 31 faces the bottom 21 of the housing base 12, so that the rectangular tubular portion 32 is surrounded by the rectangular tubular portion 22 of the housing base 12. Will be covered. For this reason, the rectangular cylindrical portion 32 of the housing cover 13 overlaps the rectangular cylindrical portion 22 of the housing base 12 when the distribution board 10 is viewed from the left-right direction or the vertical direction. For example, compared to a state in which the rectangular cylindrical portion of the housing base 12 and the rectangular cylindrical portion of the housing cover 13 are abutted, the occurrence of a gap when viewed from the left-right direction or the vertical direction is suppressed.

  As shown in FIG. 7, the long side plate portion 33 positioned relatively upward of the two long side plate portions 33 has a base end from the distal end side (on the side opposite to the bottom portion 31 and the rear side in the front-rear direction). There are one recess 33t formed on each side in the longitudinal direction (two in total).

  As shown in FIG. 5A and FIG. 7, each short side plate portion 34 constituting the rectangular cylindrical portion 32 extends from the distal end side (on the side opposite to the bottom 31, rearward in the front-rear direction) to the proximal end side. Each of the concave portions 34t formed to have a concave shape is provided on each side in the longitudinal direction (two in total). The recesses 33t and 34t are formed at positions where the protrusions 23t and 24t can be fitted when the housing base 12 and the housing cover 13 are assembled. For this reason, the recesses 33t and 34t do not interfere with the projections 23t and 24t when the housing base 12 and the housing cover 13 are assembled. Further, the protrusions of the protrusions 23t and 24t are relatively reduced by the recesses 33t and 34t, and the extreme protrusion of the protrusions 23t and 24t is suppressed.

  As shown in FIG. 2, a door 14 that covers the front surface 31 c of the housing cover 13 is provided on the front surface 31 c constituting the bottom 31 of the housing cover 13 so as to be openable and closable (turnable). Thereby, the handle 52a of the main breaker 52 and the handle 53a of the branch breaker 53 are exposed and opened by opening the door 14 as necessary. Further, the main breaker 52 and the branch breaker 53 can be hidden by closing the door 14.

Next, the exhaust heat slit structure of the housing of this embodiment will be described.
As shown in FIGS. 8 to 10, the housing base 12 includes first and second slit portions S <b> 1 and S <b> 2 formed so as to penetrate in the vertical direction, and the first and second slit portions S <b> 1 and S <b> 2 and the vertical direction. A plurality of first and second shielding portions 23a and 23b facing each other are provided.

  The first slit part S1 is opposed to the first shielding part 23a in the vertical direction and is located below the first shielding part 23a. In addition, the first slit portion S1 is formed between the second shielding portions 23b.

  The second slit portion S2 is opposed to the second shielding portion 23b in the vertical direction and is located above the second shielding portion 23b. In addition, the second slit portion S2 is formed between the first shielding portions 23a.

The first shielding part 23a has a larger surface area in the vertical direction than the first slit part S1, and is formed to overlap the first slit part S1 in the vertical direction.
The second shielding part 23b has a larger surface area in the vertical direction than the second slit part S2, and is formed to overlap the second slit part S2 in the vertical direction. Moreover, the 2nd shielding part 23b and the 1st shielding part 23a are each formed so that a long trapezoid plate shape may be made in the front-back direction of a distribution board. Moreover, the 1st shielding part 23a and the 2nd shielding part 23b are integrally formed by the continuous parts 23c and 23d formed in the both ends of the front-back direction.

Next, the operation of the distribution board of this embodiment will be described.
The distribution board 10 of this embodiment is attached to the predetermined wall in a house. The heat generated by the breakers 52, 53 and the electric wires in the distribution board 10 is discharged from the first and second slit portions S1, S2 formed in the long side plate portion 23 on the upper side of the housing base 12. The At this time, the first slit portion S1 overlaps the first shielding portion 23a in the vertical direction, and the second slit portion S2 overlaps the second shielding portion 23b in the vertical direction. For this reason, part or all of the exhaust gas that has passed through the first slit portion S1 hits the first shielding portion 23a and is discharged from the second slit portion S2. On the other hand, dust from above is prevented from entering the inside of the housing 11 by the first shielding part 23a and the second shielding part 23b.

Next, the effect of this embodiment will be described.
(1) The housing base 12 overlaps at least partially in the opening direction with the slit portion S1 above the first slit portion S1 and the first slit portion S1 formed so as to open upward above the cylindrical portion. The first shielding portion 23a of the aspect. Intrusion of dust is suppressed by the first shielding part 23a. Moreover, since 1st slit part S1 opens to an up-down direction, since it is suppressed that it exhausts to the attachment surface (wall surface) of the distribution board 10, the stain | pollution | contamination of a wall surface can be suppressed.

  (2) The second slit portion S2 has a second slit portion S2 at a position that does not overlap the first slit portion S1 in the opening direction between the first shielding portions 23a, and the second slit portion S2 in the opening direction between the first slit portions S1. The second shielding part 23b has an aspect that overlaps at least a part of the second shielding part 23b. For this reason, it can suppress more that dust penetrate | invades in the housing 11 by the 1st and 2nd shielding part 23a, 23b.

In addition, you may change the said embodiment as follows.
In the above embodiment, the first shielding portion 23a completely overlaps (covers) the first slit portion S1 in the vertical direction, but may be configured to overlap at least partly. Further, although the second shielding portion 23b completely overlaps (covers) the second slit portion S2 in the vertical direction, it may be configured to overlap at least partly.

  In the above embodiment, the housing base 12 and the housing cover 13 have a bottomed rectangular cylindrical shape, but may be appropriately changed as long as they have a bottomed cylindrical shape. However, the rectangular cylindrical portion 22 of the housing base 12 and the rectangular cylindrical portion 32 of the housing cover 13 are preferably similar in shape.

  -You may combine the said embodiment and the said modification suitably.

  DESCRIPTION OF SYMBOLS 10 ... Distribution board, 11 ... Housing, 12 ... Housing base, 12a ... Opening part, 23a ... 1st shielding part, 23b ... 2nd shielding part, 52 ... Master breaker (breaker), 53 ... Branch breaker (breaker), S1 ... 1st slit part, S2 ... 2nd slit part.

Claims (4)

  A housing base having a cylindrical portion capable of accommodating a breaker;
  The housing base includes a first slit portion that vertically penetrates a side plate portion that is positioned above the side plate portion that constitutes the cylindrical portion, and a first shielding that faces the first slit portion in the vertical direction. Including
  The first shielding part is integral with the cylindrical part, and is provided at a position away from the first slit part.
  Distribution board housing.   The housing base includes a plurality of the first slit portions arranged in the longitudinal direction of the side plate portion positioned above, a plurality of the first shielding portions facing each of the plurality of the first slit portions, and the upper and lower portions A second slit portion provided between the plurality of first shielding portions so as not to overlap the first slit portion in the direction.
  The housing of the distribution board according to claim 1.   The housing base includes a second shielding part provided between the plurality of first slit parts so as not to overlap the second slit part in the vertical direction.
  A housing for a distribution board according to claim 2.   The housing of the distribution board according to any one of claims 1 to 3,
  And a breaker accommodated in the tubular portion.
  Distribution board.