JP6365926B2 - Distribution board - Google Patents

Description

The present invention relates to a distribution board .

  Conventionally, a distribution board has a main circuit breaker, a plurality of branch circuit breakers each provided in a branch circuit that branches from a main circuit connected to the main circuit breaker and supplies electric power, and a housing that houses these devices. (For example, refer to Patent Documents 1 and 2).

  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.

  Such a distribution board may be provided with an internal device such as a current limiter (limiter) in addition to the main breaker and the branch breaker. These internal devices such as a current limiter are attached to a plate (pedestal). This plate has an insertion part (protrusion) that is inserted into a slit formed in a support bar that supports, for example, a slit formed in a bridge part installed on the housing base or a main breaker. And by inserting this insertion part into each slit, a part or all of the plate is supported.

JP 2009-268252 A JP2012-135115A

  By the way, in the distribution board as described above, when an internal device such as a current limiter (limiter) is provided, it is necessary to prepare a support pedestal for supporting each of the internal devices. Moreover, the internal apparatus accommodated in a distribution board may differ with the kind of distribution board. For this reason, it is desired to use a common support pedestal that supports internal devices within a distribution board (housing).

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a distribution board that can share a support base that supports internal devices.

  The distribution board according to the present invention includes an accommodation space capable of accommodating a main breaker, an electric wire insertion hole formed at the bottom, a housing base having an attachment portion provided so as to sandwich the electric wire insertion hole, and the electric wire insertion hole. A bridge portion attached to the attachment portion so as to straddle; and a support pedestal provided on a primary side or a secondary side of the main breaker in the accommodation space, the support pedestal, a pedestal main body portion supporting an internal device, Projecting from the side part facing the bridge part in the pedestal main body part, projecting from each of the pair of insertion parts inserted into the slits of the bridge part and each side part facing the mounting part in the pedestal main body part A pair of fixing parts fixed to the attachment part, and the pair of insertion parts and the pair of fixing parts are orthogonal to the direction across the wire insertion hole. It is formed symmetrically about the imaginary axis passing through the center portion of the direction across the wire insertion holes in the support pedestal.

According to the distribution board of the present invention, the support pedestal that supports the internal device can be shared.

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 top view for demonstrating the assembly | attachment state of the support base and attachment base in the same as the above. It is a perspective view for demonstrating the assembly state of the support base and attachment base in the same as the above. It is a perspective view of the attachment base for attaching the main breaker in the same as the above to a housing base. It is a perspective view of the support base in the same as the above. It is a perspective view for demonstrating the assembly state of the support base and attachment base in the same as the above. It is a top view for demonstrating the example of a mounting change of the support base in the same as the above. It is a perspective view of the bridge part in the example of attachment change of the support base in the same as the above.

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 a wire insertion hole 21 a for insertion of a 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 top and bottom sides of the wire insertion hole 21a in the bottom portion 21. The same number of guide holes 21b are formed on both the upper side and the lower side of the wire 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).

  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.

Here, the attachment structure of the housing cover 13 and the door 14 will be described.
As shown in FIG. 2, the door 14 is provided on the upper portion of the front surface 31 c of the housing cover 13 so as to be opened and closed (turned).

  As shown in FIGS. 3 and 8, in the distribution board 10 of this embodiment, a current limiter (limiter) 61 is connected to the primary side of the main breaker 52. The current limiter 61 is supported by a support base 62.

As shown in FIGS. 8, 9, and 11, the support pedestal 62 includes a pedestal main body 63, two insertion portions 64, and two screw fixing portions 65.
As shown in FIG. 11, the pedestal main body 63 is formed to have a substantially rectangular plate shape, and a wooden board 63a is provided on the front surface thereof.

  The two insertion portions 64 are formed so as to extend from one end portion in the short direction (left-right direction) of the pedestal main body portion 63. The insertion portion 64 includes a first plate portion 64a extending from the pedestal main body portion 63 and a second plate portion 64b extending from both ends of the first plate portion 64a. The 1st board part 64a has a surface parallel to the surface direction of the said base body part 63 which makes | forms plate shape. The second plate portion 64b extends from both ends of the first plate portion 64a in the vertical direction (direction orthogonal to the extending direction) in a direction (front-rear direction) orthogonal to the surface direction of the first plate portion 64b. Formed. The second plate portion 64b is formed with a protrusion 64c extending further on the distal end side in the extending direction than on the proximal end side. The insertion portion 64 can be inserted into a slit 72 formed in the bridge portion 70b of the breaker support portion 70 that supports the main breaker 52, for example.

  Here, as shown in FIG. 10, the breaker support portion 70 has a support main body portion 70a and two bridge portions 70b and 70c sandwiching the support main body portion 70a, and the slit is formed only in one bridge portion 70b. 72 is formed.

  As shown in FIGS. 10 and 12, the slit 72 includes an insertion slit 72a through which the projection 64c of the two second plate portions 64b can be inserted, and a retaining slit 72b that prevents the projection 64c from coming off. . The insertion slit 72a and the retaining slit 72b have different opening areas, and the insertion slit 72a has a larger opening than the retaining slit 72b.

  Moreover, as shown in FIG. 11, the two insertion parts 64 of the support base 62 are parallel to the direction orthogonal to the direction (up-down direction) straddling the said electric wire insertion hole 21a of the breaker support part 70, and the said electric wire insertion hole It is formed at a symmetric position with a virtual axis KL passing through the center in the direction straddling 21a as the center.

  The screw fixing portion 65 of the support pedestal 62 is for screw fixing to the guide hole 21b of the housing base 12, and is formed so as to straddle the electric wire insertion hole 21a for electric wire insertion.

Next, the operation of the distribution board of this embodiment will be described.
In the distribution board 10 of the present embodiment, a main breaker 52 is provided inside the housing 11 via a breaker support portion 70. A current limiter 61 supported by a support base 62 is provided on the primary side (input side) of the main breaker 52. The current limiter 61 cuts off the current supply to the main breaker 52 when a current exceeding a limit value set based on, for example, a contract with a power company that provides commercial AC power flows.

Here, as shown in FIGS. 9 and 12, the support pedestal 62 is inserted through the insertion portion 64 when the insertion portion 64 is inserted into the slit 72 of the breaker support portion 70 and the retaining slit 72b and the projection 64c are engaged. The part 64 is prevented from coming out of the slit 72. The two insertion portions 64 of the support pedestal 62 are parallel to a direction (left-right direction) orthogonal to a direction (vertical direction) straddling the wire insertion hole 21a of the breaker support portion 70, and a direction straddling the wire insertion hole 21a. Are formed at symmetrical positions with a virtual axis KL passing through the center of the center. For this reason, for example, even when the insertion portion 64 is rotated 180 degrees with the front-rear direction as the rotation axis so as to be in the opposite direction (right direction) from the direction (left direction) shown in FIG. If it fixes to the guide hole 21b of the base 12, each insertion part 64 will be located in the substantially the same position in an up-down direction. As a result, for example, as shown in FIG. 13, the support base 62 can be provided on the secondary side (right side in the present embodiment) of the main breaker 52, and the support base 62 is shared. In FIG. 13, not the bridge portion 70 b of the breaker support portion 70 of the main breaker 52 but a bridge portion 80 other than the breaker support portion 70 is attached. As shown in FIG. 14, the bridge portion 80 has a slit 81 similarly to the bridge portion 70 b of the breaker support portion 70. The slit 81 includes an insertion slit 81a through which the protrusion 64c of the two second plate portions 64b can be inserted, and a retaining slit 81b for retaining the protrusion 64c. The insertion slit 81a and the retaining slit 81b have different opening areas, and the insertion slit 81a has a larger opening than the retaining slit 81b.

Next, the effect of this embodiment will be described.
(1) The support pedestal 62 is parallel to the direction orthogonal to the direction straddling the wire insertion hole 21a and is centered on the virtual axis KL passing through the central portion in the direction straddling the wire insertion hole 21a. An insertion portion 64 inserted through the slit 72 is formed at a symmetrical position. Thus, even if the direction in which the support pedestal 62 is rotated and the insertion portion 64 is inserted is 180 degrees opposite, each insertion portion 64 is formed in a symmetrical position, so that (2) the bridge portion 70b with respect to the slit 72 Is a part of the breaker support portion 70 that supports the main breaker 52, and therefore, an increase in the number of parts is suppressed.

In addition, you may change the said embodiment as follows.
In the above embodiment, as an example of being attached to the secondary side of the main breaker 52, as shown in FIGS. 13 and 14, a configuration using a bridge portion 80 that is separate from the breaker support portion 70 that supports the main breaker 52, and However, it is not limited to this. For example, by forming the slit 72 similar to the bridge portion 70b in the bridge portion 70c of the breaker support portion 70, the separate bridge portion 80 can be made unnecessary.

  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 which comprises housing | casing, 12a ... Opening part, 13 ... Housing cover (cover) which comprises housing | casing, 21a ... Electric wire insertion hole, 52 ... Main circuit breaker, 62 ... support pedestal, 64 ... insertion part, 70b, 70c ... bridge part, 80 ... bridge part, KL ... virtual axis.

Claims (3)

A housing base having a housing space capable of accommodating the main breaker, a wire insertion hole formed in the bottom, and a mounting portion provided so as to sandwich the wire insertion hole;
A bridge portion attached to the attachment portion so as to straddle the wire insertion hole;
A support base provided on the primary side or secondary side of the main breaker in the accommodating space;
The support pedestal includes a pedestal main body that supports internal devices, a pair of insertion portions that protrude from a side of the pedestal main body that faces the bridge portion, and is inserted into a slit of the bridge portion, and the pedestal main body portion. Projecting from each of the side parts facing the mounting part, and a pair of fixing parts fixed to the mounting part,
The pair of insertion portions and the pair of fixing portions are formed symmetrically about a virtual axis that is orthogonal to the direction straddling the wire insertion hole and passes through the central portion of the support pedestal in the direction straddling the wire insertion hole. Distribution board.   A support main body for supporting the main breaker, and a support having a pair of bridge portions provided so as to sandwich the support main body.
  The distribution board according to claim 1.   The pair of insertion portions are provided from a surface supporting the internal device in the height direction of the pedestal main body portion,
  The pair of fixing portions are provided at positions away from the surface supporting the internal device in the height direction of the pedestal main body portion.
  The distribution board according to claim 1 or 2.