JP4501544B2 - Distribution board - Google Patents

Description

  The present invention relates to a distribution board that plugs and connects branch breakers.

  2. Description of the Related Art Conventionally, a distribution board having a so-called plug-in branch breaker that is plugged into a conductive bar is provided.

As this kind of distribution board, a branch breaker is plug-in connected from the short direction of the conductive bar to three long conductive bars separately connected to the load side terminals of the main breaker, and a plurality of There is provided one in which branch breakers are arranged in the longitudinal direction of a conductive bar (Patent Document 1).
Japanese Patent Laid-Open No. 2003-164021 (FIG. 1)

  In the distribution board as described above, it is necessary to match the maximum current capacity of the conductive bar with the maximum rated current of the main breaker. For example, if the maximum current capacity of the conductive bar is 200A, the main breaker having a maximum rated current of 200A is used. In such a distribution board, when a branch breaker is added to increase the load connected to the distribution board, a problem arises if the current flowing through the main breaker after the extension does not exceed the maximum rated current of, for example, 200 A of the main breaker. However, if the branch breaker is added and the current flowing through the main breaker exceeds 200A, for example 400A and exceeds the maximum rated current of the main breaker, a main breaker with a maximum rated current of 400A or more is required. Along with this, the conductive bar is also required to have a maximum current capacity of 400 A or more by increasing its current capacity by increasing its thickness and width dimensions.

  However, if the thickness of the conductive bar is increased in order to increase the maximum current capacity of the conductive bar, there has been a problem that the plug-in branch breaker cannot be plugged in and connected. . In addition, by increasing the width of the conductive bar without increasing the thickness of the conductive bar, the problem that the branch breaker cannot be plugged in is eliminated. Since the gaps are arranged so as to be sandwiched from both ends, the interval between the branch breakers is widened, which causes a problem that the branch breakers cannot be stored in the arrangement space.

  That is, when a current capacity exceeding the maximum current capacity is required for the conductive bar, there is a problem that the branch breaker cannot be used as it is.

  The present invention has been made in view of the above points, and its purpose is to change the conductive bar even when a current capacity exceeding the maximum current capacity of the conductive bar to which the branch breaker is plugged in is required. This is to provide a distribution board that can be easily accommodated.

  In order to solve the above-mentioned problem, in the invention of claim 1, one end of the main breaker is electrically connected to each load side terminal of the main breaker, and the other end extends laterally from the arrangement position of the main breaker. A plurality of main conductive bars, one end of which is electrically connected to each main conductive bar, and the other end extends in the same direction as the main conductive bar, and the opening of the housing A plurality of branching conductive bars spaced from the main conductive bar and disposed overlapping the main conductive bar on the surface side; and a terminal part for plug-in connection. A distribution board comprising: a plurality of branch blocks including a plurality of branch breakers that are plugged into the bars and arranged in parallel in the extending direction of the branch conductive bars.

  According to the invention of claim 1, since the branch conductive bar into which the branch breaker is plugged in is connected in parallel with the main branch conductive bar in parallel with the other branch conductive bar, The current flowing through the branching conductive bar does not change, and only the current flowing through the main conductive bar increases. As a result, for example, by adding a branch breaker to the distribution board, the main breaker is replaced with one with a larger maximum rated current, and the current capacity exceeds the maximum current capacity of the branching conductive bar to which the branch breaker is plugged in. Even if it is necessary to change the maximum current capacity of the main conductive bar to one that matches the maximum rated current of the main breaker, there is no need to change the branch conductive bar. Since it can be used, it can respond easily.

  In the invention of claim 2, in addition to the configuration of claim 1, the branch block has a space for electrically connecting the branch conductive bar to the main conductive bar between the branch blocks. It was set as the distribution board characterized by having.

  According to the invention of claim 2, when the branch block is attached to the main conductive bar, the branch blocks do not interfere with each other, so that the branch block can be attached to the main conductive bar from the opening surface side of the housing. .

  In the invention of claim 3, in addition to the configuration of claim 1 or 2, the other end portion of the main conductive bar is placed on the most other end side of the main conductive bar among the plurality of branch blocks. The distribution board is characterized in that it is positioned on one end side with respect to the other end portion of the provided branch block.

  According to the invention of claim 3, since the other end portion of the main conductive bar does not protrude to the other end side from the branch block provided on the most other end side of the main conductive bar, the other end of the main conductive bar It is possible to omit the space required to store the section, and to effectively use the space in the distribution board.

  According to a fourth aspect of the present invention, in addition to the structure according to any one of the first to third aspects, the branching conductive bar is arranged such that the branching conductive bar extends from the main conductive bar to the opening surface of the housing. It is electrically connected to the main conductive bar via a conductive bar for feed provided with standing pieces separated in the intersecting direction, and at least the adjacent conductive bars for feeding are not parallel to each other. The distribution board is characterized by being displaced.

  According to the invention of claim 4, since the standing pieces of the adjacent conductive bars for feeding are not parallel to each other, between the adjacent conductive bars for feeding by inadvertently placing a tool on the distribution board during construction work, etc. It is possible to prevent the occurrence of a short circuit accident between the electrodes.

  The present invention replaces the main breaker with one having a larger maximum rated current, and even when a current capacity exceeding the maximum current capacity of the branch conductive bar to which the branch breaker is plugged in is required, the main conductive bar Therefore, there is no need to change the branch breaker or the branch conductive bar, and it is possible to easily cope with this.

  Hereinafter, the distribution board 1 of this invention is demonstrated with reference to FIGS. 1-3. In FIG. 1, the front direction is to the left of the distribution board 1, the upper direction is above the distribution board 1, the lower direction is below the distribution board 1, the left direction is behind the distribution board 1, and the right direction is The front of distribution board 1 is assumed.

  As shown in FIG. 2, the distribution board 1 of the present invention is arranged such that the main breaker 2 and one end side are electrically connected to the load side terminals 6, 7, 8 of the main breaker 2, and the other end side is the main breaker 2. Three main conductive bars 11, 11, 11 that extend downward from the position, and one main conductive bar 11 on one end side through substantially Z-shaped feed conductive bars 13, 14, 15. 11, 11, 11, the other end extending downward, and the conductive bar 11, 11, 11 for the trunk in front of the opening surface side of the casing (not shown) of the distribution board 1. Branching conductive bars 17, 18, 19, which are separated from the main conductive bar 11 and overlapped with the main conductive bars 11, 11, 11, and a terminal portion (not shown) for plug-in connection. 12 plugs connected to branching conductive bars 17, 18 and 19 and arranged in parallel in 12 rows And a branch block A provided with a breaker 20. Further, the branch conductive bars 17, 18, and 19 are located on the lower side of the distribution board from the branch block A, and the branch conductive bars 17, 18, and 19, A branch block B having 12 branch breakers 20 in two rows is connected to the main conductive bars 11, 11, 11 using the conductive bars 13, 14, 15 for feeding.

  The main breaker 2 has a rectangular parallelepiped container 2a made of, for example, a synthetic resin, and is connected to a voltage electrode of a power line (not shown) of an external power supply at one end side in the longitudinal direction of the container 2a. It has the power supply side terminal 4 connected with the terminals 3 and 5 and a neutral pole. At the other end in the longitudinal direction of the main body 2 a of the main breaker 2, the load-side terminals 6 and 8 and the power-side terminals 4 that correspond to the power-side terminals 3 and 5, respectively, become voltage poles. A load side terminal 7 serving as a negative electrode is provided in the order of the load side terminals 6, 7, 8 from the left side of the container body 2a, and each load side terminal 6, 7, 8 corresponds to a fixing screw 9. A screw hole (not shown) is provided. The main breaker 2 includes an operation handle 10 located on the front side of the body 2a when the power supply side terminals 3, 4, 5 and the load side terminals 6, 7, 8 are energized. The main breaker 2 shuts off the operation handle 10 and shuts off between the terminals when the overcurrent is generated between the power supply side terminals 3, 4, 5 and the load side terminals 6, 7, 8. It is located on the side.

  The trunk conductive bar 11 is formed in a long shape from, for example, a conductive metal plate, and is connected and fixed to the load side terminals 6, 7, and 8 of the trunk breaker 2 on one end side using a fixing screw 9. And a plurality of insertion holes 11a (see FIG. 3) through which the fixing screw 12 is inserted from one end side to the other end side. ing. As shown in FIG. 2, the length of the main conductive bar 11 is different from that of the branch block B in which the other end of the main conductive bar 11 is provided on the most other end side of the main conductive bar 11. Since the other end portion of the main conductive bar 11 does not protrude from the branch block B to the other end side, the main conductive bars 11, 11, 11 are The space required for storage can be omitted, and the space in the distribution board 1 can be used effectively.

  The conductive bars 13, 14, 15 for feeding are each formed in a Z shape from a conductive metal plate, and are connected to the main conductive bar 11 by fixing screws 12, 12 and are fixed in a flat plate shape 13 a. , 14a, 15a, standing pieces 13b, 14b, 15b extending in the vertical front direction from the lower ends of the fixing pieces 13a, 14a, 15a, and extending vertically downward from the front ends of the standing pieces 13b, 14b, 15b. The connection pieces 13c, 14c, and 15c are provided with insertion holes (not shown) through which the fixing screws 16 are inserted at the distal ends of the connection pieces 13c, 14c, and 15c. Here, the connecting piece 13c is formed in an L shape with the tip side protruding rightward, and the connecting piece 15c is formed in an inverted L shape with the tip side protruding leftward. 15 is symmetrical. Further, as shown in FIG. 1, the standing piece 14b of the feeding conductive bar 14 is formed to have a larger length than the standing pieces 13b and 15b of the feeding conductive bar 13 and 15, so that The connection piece 14c of the conductive bar 14 is positioned closer to the opening side of the housing (not shown) than the connection pieces 13c, 15c of the feed conductive bars 13, 15.

  As shown in FIGS. 1 and 2, the branching conductive bars 17, 18, and 19 are formed in a long shape from a conductive metal plate, and the fixing screws 16 are inserted through both ends in the longitudinal direction. Insertion holes (not shown) are provided, and in addition, a plug blade portion (not shown) for connecting to a terminal portion (not shown) for insertion connection of the branch breaker 20 on both ends in the short direction. Twelve (not shown) are provided at each end corresponding to the number of branch breakers 20.

  The branch breaker 20 has a rectangular parallelepiped container body 20a made of, for example, a synthetic resin, and the side wall portion on one end side in the longitudinal direction of the container body 20a is in the longitudinal direction of the side wall portion (front-rear direction of the container body 20a). Three terminal portions respectively corresponding to the plug blade portions of the branching conductive bars 17, 18, 19 are arranged in parallel. Two of the three terminal portions are provided with blade receiving portions (not shown) that are electrically connected to the plug blade portions of the branching conductive bars 17, 18, 19. Any one of 17, 18, and 19 can be selectively electrically connected. Further, as shown in FIG. 1, a load-side power line (not shown) is electrically connected to the side wall portion on the other end side in the longitudinal direction of the vessel body 20a of the branch breaker 20 as shown in FIG. Power supply terminal portions 21 and 21 are provided, and in addition, a locking hole portion 22 is provided on the rear end side. In addition, on the front side of the container body 20a, an operation handle 23 that is normally on is provided, and the branch breaker 20 is electrically connected to any two of the branch conductive bars 17, 18, and 19. When an overcurrent is generated between the terminal portion and the power line terminal portions 21 and 21, the terminal portions are disconnected and the operation handle 23 is positioned on the off side. Furthermore, a locking projection (not shown) protruding forward is provided on one end side in the longitudinal direction of the front portion of the branch breaker 20.

  The branch blocks A and B are configured by including the branch conductive bars 17, 18 and 19 and the branch breaker 20 on a flat base 24. The base 24 is formed in a flat plate shape with a synthetic resin or the like, and has a prismatic shape spaced apart in the longitudinal direction at a substantially central portion in the short direction (left and right direction in FIG. 2) as shown in FIG. Support posts 24a, 24a are provided. A screw hole (not shown) for the fixing screw 16 is provided in the front surface portion of the support post 24a, and the fixing screw 16 is inserted into both sides of the support post 24a in the short direction of the base 24. An insertion hole (not shown) is provided. In addition, twelve locking portions 25 that are engaged with the locking hole portions 22 of the branch breaker 20 are arranged in parallel along the longitudinal direction of the base 24 at both ends in the short direction of the base 24. . Furthermore, insertion holes (not shown) for inserting the fixing screw 40 are provided at both ends in the longitudinal direction of the base 24. Since the branch blocks A and B have the same configuration, some of the reference numerals of members relating to the branch block B are omitted in FIGS.

  The main breaker 2, the main conductive bar 11, and the branch blocks A and B are attached to the board frame 26 and housed in a casing (not shown) of the distribution board 1 having an open front surface. It will be. The substrate frame 26 is formed in a rectangular frame shape with an opening at the center, and a plurality of screw holes 28 corresponding to the fixing screws 27 are provided. Support bridges 29 to 36 are fixed to both sides of the substrate frame 26 in the short direction by fixing screws 27 so as to extend through the opening in the center of the substrate frame 26. A flat support 37 to which the breaker 2 is attached is provided. With the support bridges 29 to 36 and the support base 37, the main breaker 2, the main conductive bar 11, and the branch blocks A and B are attached to the substrate frame 26.

  The distribution board 1 of this invention is comprised by the above, Each component is arrange | positioned as follows.

  As shown in FIG. 3, support bridges 29, 30, 31, and 35 are arranged on the substrate frame 26 from the upper side to the lower side so as to cross the opening in the central portion in the short direction of the substrate frame 26. It is connected and fixed by a screw 27. A support base 37 is connected and fixed to the support ends 29 and 30 by a fixing screw 38, and the main circuit breaker is placed at a substantially central portion in the longitudinal direction of the support base 37 with the power-side terminals 3, 4 and 5 facing upward. 2 is attached. One end side of the main conductive bars 11, 11, 11 is connected to the load-side terminals 6, 7, 8 of the main breaker 2 using fixing screws 9, and the other end side is disposed at the main breaker 2 position. The board frame 26 is arranged in parallel to the lateral direction of the board frame 26 from the side to the side, and is fixed to the support bridges 31 and 35 by using fixing screws 39.

  As described above, the support bridges 32, 33, 34, 36 straddle the main conductive bars 11, 11, 11 on the board frame 26 to which the main conductive bars 11, 11, 11 are fixed. The substrate frame 26 is fixed with fixing screws 27. Bases 24 and 24 of the respective branch blocks A and B are fixed to the support bridges 32 and 33 and the support bridges 34 and 36 by fixing screws 40. At this time, there is a space for electrically connecting the branching conductive bars 17, 18, 19 to the main conductive bars 11, 11, 11 between the bases 24, 24 constituting the respective branch blocks A, B. If the branch blocks A and B are attached to the main conductive bars 11, 11 and 11, the branch blocks A and B do not interfere with each other. Can be attached to the main conductive bars 11, 11, 11, and the workability is good.

  On the base 24, branching conductive bars 17, 18, and 19 are arranged as follows. That is, the branching conductive bar 17 is arranged on the front side of the base 24 along the longitudinal direction of the base 24 on the left side of the support post 24a, and the branching conductive bar 19 is placed on the right side of the support post 24a in the longitudinal direction of the base 24. Are arranged on the front side of the base 24. Further, the branching conductive bar 18 is arranged so as to be bridged between the support posts 24a and 24a. In addition, at this time, the branching conductive bars 17 and 19 are arranged so that the insertion holes provided at both ends communicate with the insertion holes provided on both sides of the support posts 24a and 24a of the base 24, respectively. The branching conductive bar 18 is arranged so that the insertion holes provided at both ends communicate with the screw holes provided in the support posts 24 a and 24 a of the base 24.

  Each of the branching conductive bars 17, 18, 19 arranged as described above is provided with feeding conductive bars 13, 14, 15 from the front on the upper end side. At this time, the insertion holes provided in the connection pieces 13c, 14c, and 15c and the insertion holes on the upper ends of the branching conductive bars 17, 18, and 19 communicate with each other, and are provided in the fixing pieces 13a, 14a, and 15a. The insertion hole and the insertion hole 11a of the main conductive bar 11 communicate with each other.

  As shown in FIG. 1, the branching conductive bars 17, 18, and 19 arranged in this way are fixed to the base 24 by the fixing screw 16, and the upper end side is fixed to the feeding conductive bar. 13, 14, and 15 are fixed to the base 24. Further, the feed conductive bars 13, 14, 15 are connected and fixed to the main trunk conductive bars 11, 11, 11 by the fixing screws 12, so that the main trunk conductive bars 11, 11, 11, the feed conductive bar 13, 14 and 15 and current paths made up of branching conductive bars 17, 18 and 19 are formed. At this time, the feeding conductive bars 13, 14, and 15 separate the branching conductive bars 17, 18, and 19 from the main conductive bars 11, 11, and 11 in the direction intersecting the opening surface of the housing (not shown). The standing pieces 13b, 14b, 15b to be moved are arranged so as not to be parallel to each other in the adjacent feeding conductive bars 13, 14 or the feeding conductive bars 14, 15. Thereby, it is possible to prevent a short-circuiting accident between the electrodes from occurring between the adjacent conductive bars for feeding by inadvertently placing a tool on the distribution board 1 during construction work or the like.

  The branch breaker 20 is inserted and connected to the branching conductive bars 17, 18, 19 fixed to the base 24 as described above. The branch breaker 20 is inserted into the branching conductive bars 17, 18, 19 from the left side or the right side, and any two of the branching conductive bars 17, 18, 19 are inserted into the blade receiving portion provided in the terminal part. The plug blade portion is plugged in and electrically connected, and is fixed by engaging a locking portion 25 provided on the base 24 in the engagement hole portion 22 as shown in FIG. After the branch breaker 20 is inserted and connected in this way, a synthetic resin locking member 41 having a hole (not shown) for locking the locking protrusion of each branch breaker 20 is shown in FIG. In this way, it is attached to the front side of the branching conductive bar 18. Thereby, the said latching protrusion of the branch breaker 20 is latched by the latching member 41, and drop-off prevention of the branch breaker 20 is achieved.

  The board frame 26 to which the respective members are attached in this way is provided in front of the board frame 26, and is a protective plate (not shown) that exposes the operation handle 10 of the main breaker 2, the operation handle 23 of the branch breaker 20, and the like. At the same time, the distribution board 1 is completed by being housed in a housing (not shown).

  Next, how to add the branch breaker 20 to the distribution board 1 of the present invention will be described. As shown in FIG. 1, the distribution board 1 of the present invention has branch blocks A and B connected in parallel to the main conductive bars 11, 11, 11. Therefore, when the branch breaker 20 is added. The branch breaker 20 is added by newly providing a branch block in parallel with the main conductive bars 11, 11, 11. Thus, by connecting the branch blocks in parallel to the main conductive bars 11, 11, 11, the value of the current flowing through the branch conductive bars 17, 18, 19 of the other branch blocks does not change. Only the value of the current flowing through the main breaker 2 and the main conductive bars 11, 11, 11 increases. Therefore, even if it is necessary to replace the main breaker 2 with a larger maximum rated current by adding the branch breaker 20, it is sufficient to replace the main breaker 2 and the main conductive bar 11 with ones that are compatible with each other. Further, it is not necessary to replace the branch conductive bars 17, 18, 19 and the branch breaker 20 of the branch block, and the branch block can be used as it is. Therefore, even when the main breaker 2 is replaced, it can be easily handled.

  That is, according to the distribution board 1 of the present invention, the branching conductive bars 17, 18, 19 to which the branch breaker 20 is plugged in are connected to the main conductive bars 11, 11, 11, and the other branching conductive bars 17, 11. 18 and 19 are connected in parallel, so even if the number of branch blocks is increased, the current flowing through the branching conductive bars 17, 18, and 19 does not change, and only the current flowing through the main conductive bars 11, 11, and 11 is maintained. Will increase. Thereby, for example, by adding the branch breaker 20 to the distribution board 1, the main breaker 2 is replaced with one having a larger maximum rated current, and the branch conductive bars 17, 18, Even when a current capacity exceeding the maximum current capacity of 19 is required, the branch current block can be changed by simply changing the maximum current capacity of the main conductive bars 11, 11, 11 to the maximum rated current of the main breaker 2. Can be used as they are, so that it is not necessary to change the branching conductive bars 17, 18, and 19 and can be easily handled. In addition, the branching conductive bars 17, 18, 19 are electrically connected to the main trunk conductive bars 11, 11, 11 on one end side, and the other end side is extended from the main trunk conductive bars 11, 11, 11. Since it extends in the same direction as the direction, is spaced from the main conductor bars 11, 11, 11 on the opening surface side of the housing, and overlaps with the main conductor bars 11, 11, 11, Since the branch blocks A and B are located in front of the main conductive bars 11, 11, 11, the space can be reduced and the space can be saved.

It is the side view which a part of distribution board of the present invention omitted. It is a front view of the principal part of a distribution board same as the above. It is a front view of the principal part before arrange | positioning the branch block of a distribution board same as the above.

Explanation of symbols

1 Distribution Board 2 Main Breaker 2a Body 6 Load Side Terminal 11 Main Conductive Bar 13, 14 Feed Conductive Bar 17, 18 Branch Conductive Bar 20 Branch Breaker 24 Base 24a Support Post 26 Substrate Frame A, B Branch Block

Claims (4)

  A main breaker, a plurality of main conductive bars, one end of which is electrically connected to each load-side terminal of the main breaker, and the other end is extended laterally from the position where the main breaker is disposed. The other end of the main bar is electrically connected to the main bar and extends in the same direction as the main bar. The main bar is spaced from the main bar on the opening side of the casing. A plurality of branching conductive bars arranged overlapping the conductive bar, and a terminal part for plug-in connection, the terminal part being plugged into the branching conductive bar and extending in the extending direction of the branching conductive bar A distribution board comprising: a plurality of branch blocks each having a plurality of branch breakers arranged side by side.   2. The branching block according to claim 1, wherein a space for electrically connecting the branching conductive bar to the main conductive bar is provided between the branching blocks. Distribution board.   The other end portion of the main conductive bar is positioned on one end side of the other end portion of the branch block provided on the other end side of the main conductive bar among the plurality of branch blocks. The distribution board according to claim 1 or 2, characterized by the above.   The branching conductive bar is electrically connected to the main trunk conductive bar via a feeding conductive bar having a standing piece that separates the branching conductive bar from the main trunk conductive bar in a direction intersecting the opening surface of the housing. 4. The component according to claim 1, wherein at least the adjacent conductive bars for feeding are arranged so as to be offset so that the respective standing pieces are not parallel to each other. 5. Electric board.

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