JP3791165B2 - Branch breaker mount for distribution board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a breaker mounting base for fixing a branch breaker incorporated in a distribution board mainly in a lamp distribution board.
[0002]
[Prior art]
First, the structure of the distribution board described above is shown in FIG. In the figure, 1 is a panel box of a distribution board, 2 is a front outer door, 3 is an inner door, and a circuit breaker (electric leakage breaker) is placed on the front of a base plate 4 provided on the back side of the panel box 1 in the panel. 5) For the number of multiple circuits connected to the bus bar 6 by being distributed from both the left and right sides of the main bus bar 6 and the main bus bar 6 which are drawn from the circuit breaker 5 and wired vertically in the center of the panel The branch breakers 7 are incorporated, and each branch breaker 7 is fixed to the base plate 4 via a multiple mounting base 8 whose detailed structure will be described later. In addition, window holes 3a and 3b through which the open / close handles 7a of the respective breakers protrude are opened on the door surface of the inner door 3 in accordance with the arrangement of the circuit breakers 5 for wiring and the branch breakers 5 arranged in two right and left rows.
[0003]
4 (a) and 4 (b) show a conventional structure of the mounting base 8 for fixing the branch breaker 7 in the panel. That is, in the conventional mounting structure, two sets of left and right raised rail bases (U-channel rail bases) 9 screwed to the base plate 4 according to the arrangement pitch of the branch breakers 7 arranged in two rows on the left and right sides, and each rail Each base 9 is composed of a combination with a multiple breaker mounting plate 10 mounted on and screwed to the base 9. Here, on the breaker mounting plate 10, as shown in FIG. 4 (b), a plurality of sets of latching claws 10a (L-shaped fixing claws) for fitting and branching the breaker 7 one by one from both the left and right sides, and 10b (curved movable claw) is formed by cutting and raising, and split slits 10d are formed in the left-right direction leaving a narrow connecting portion 10c between the poles. In addition, 10e is the screw fastening groove | channel formed in the both right and left ends for every pole.
[0004]
In addition, the multiple breaker mounting plate 10 having the above-described configuration is formed so that about 10 branch breakers 7 can be mounted on one plate, and the number of breaker mounting plates 10 is set according to the number of breakers mounted. The narrow connecting portion 10c is cut so that an excessive portion of the mounting plate 10 is cut off.
[0005]
[Problems to be solved by the invention]
By the way, in the above-described conventional distribution board breaker mounting structure, in order to divide and assemble a large number of branch breakers 7 into the left and right two rows on the panel box 1 of the distribution board, two sets of left and right raising rail bases 9 are provided. In addition to the four parts of the breaker mounting plate 10 screwed on the base for each rail base 9, the open / close handle 7a of each breaker opens to the inner door 3 of the distribution board with the branch breaker 7 fixed. Adjustment work is required to align the position of each mounting plate 10 on the rail base 9 so as to protrude into the window hole 3b. For this reason, assembling the distribution board requires a large number of parts, man-hours and time.
[0006]
The present invention has been made in view of the above points. The object of the present invention is to solve the problems described above, and to divide and assemble a number of branch breakers into two left and right rows with a small number of parts and simple alignment adjustment. An object of the present invention is to provide a branch breaker mounting base for a distribution board having an improved structure.
[0007]
[Means for Solving the Problems]
This invention Oite is distribution board of the panel in the center in the vertical line was along the main trunk busbar multiple-shaped breaker mount for fixing the branch breakers connected in sequence to the left and right sides in the bus bar in panel The breaker mounting area is set by distributing the left and right sides on the base plate, and the breaker engaging claws arranged in the upper and lower stages are cut and formed in accordance with the arrangement pitch of the branch breakers for each area. In a branch breaker mounting base for a distribution board in which a slit for splitting the base plate is formed in the left-right direction while leaving a narrow joint between them, the left and right ends of the base plate and the central portion are As a leg piece for screw fastening to the inner base plate, the breaker mounting part in the left and right region is bent and raised into a trapezoidal shape, and a dovetail connecting projection on the one side of the upper and lower edge of the base plate, the other So as to form a connecting projection isomorphous coupling groove to. (Claim 1).
[0008]
In this way, the breaker locking claws are formed in the left and right areas of one base plate in correspondence with the branch breakers arranged in two rows on the left and right side by side in the panel, so that the parts can be compared with the conventional structure. The number of points and alignment adjustments are halved, and the assembly of the distribution board can be carried out efficiently.
In addition, since the left and right ends of the base plate, and the central portion are leg pieces that are screw-fastened to the base plate in the panel, the left and right region breaker mounting portions are bent and shaped into a raised base, so that with the branch breaker attached, The main bus bar wired in the panel and each branch breaker mounted on the base plate can be arranged side by side at substantially the same height level.
Furthermore, when there are a large number of branch breakers to be installed in the board and a plurality of base plates are used in a row, the dovetail connecting projections and connecting grooves are fitted so that there is no displacement between the base plates. Can be connected together.
[0009]
In the above-mentioned breaker mounting base , it is possible to easily separate the poles of the base plate according to the number of branch breakers incorporated in the panel, and in order to ensure the rigidity of the mounting base in a state where the gaps are not separated, Are formed at each leg piece and the trapezoidal corner portion of the breaker mounting portion (claim 2 ).
[0011]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the embodiments shown in FIGS. In the drawings of the embodiment, the same members corresponding to those in FIG.
[Example 1]
1 (a) and 1 (b), a branch breaker 7 arranged on the left and right sides of the main bus bar 6 and incorporated in the distribution board is connected to the inside of the board via the multiple breaker mounting base 11 according to the present invention. Mounted on the base plate 4.
[0012]
Here, the breaker mounting base 11 sets the breaker mounting area by distributing to the left and right sides on the base plate 11a selected to a size that allows a predetermined number of branch breakers 7 to be collectively mounted. In accordance with the arrangement pitch of the branch breakers 7, the breaker locking claws 11b (fixed claws) and 11c (movable claws) arranged in the upper and lower stages so as to sandwich one breaker from each side in each region are cut and raised. Has been. Further, a base plate dividing slit 11e is formed between the poles, leaving a narrow connecting portion 11d. Furthermore, the base plate 11a has a screw hole 11f as a leg piece portion to which the left and right ends and a central portion of the base plate 11a are applied to the base plate 4 in the board and are fastened, and a breaker straddling between the leg pieces. The mounting portion is bent and formed into a raised trapezoidal shape (sheet metal processing) so as to protrude forward in a U-shape. Here, the connecting portion 11d is bent at the center of each leg piece portion and the breaker mounting portion. It is formed at the corner. The example shown in the figure shows a duplex type for simplicity, but in actual products, considering the size and weight of parts, the standard specification is for 10 series use, and a total of 20 branch breakers 7 are provided on the left and right sides. It is made so that it can be installed.
[0013]
With such a configuration, when the branch breakers 7 are assembled into the distribution board in two left and right rows, the breaker mounting base 11 is first screwed to the base plate 4 in the board, and then the central leg piece portion is mounted. After the main bus bar 6 is wired on the front side, one branch breaker 7 is fitted and fixed one by one between the locking claws 11b and 11c of the raised trapezoidal portion (breaker mounting portion) formed on the left and right sides of the mounting base 11. Hold. In this state, the branch line 12 connects the input side terminal of the branch breaker 7 and the main bus bar 6.
[0014]
Further, when detaching the excess portion of the mount 11 in accordance with the number of installed branch breakers 7, after cutting with the cutting tool the connecting portion 11 d of the trapezoidal corner portion described above, dividing slit 11e bedplate 11 It can be easily separated by bending along
Further, in the structure of the illustrated example, a dovetail-shaped connecting projection 11g is formed on the side edge on the upper end side, and the same shape as the connecting projection 11g is formed on the side edge on the lower end side with respect to the central leg piece portion of the base plate 11a. A groove 11h is formed. With this structure, when a plurality of breaker mounting bases 11 are connected in series in the panel (when the number of branch breakers 7 cannot be accommodated by a single base plate 11), the connecting protrusion 11g is separately provided. The breaker mounting base 11 is fitted into the connecting groove 11h. Thereby, the mounting base extended without the position shift to right and left can be connected integrally.
[0015]
[Example 2]
FIG. 2 shows an application example of the breaker mount 11. This embodiment is applied to the installation of a branch breaker having a high height, and the base plate 11a is left as a flat plate without bending the raised trapezoidal portion described in the first embodiment. Similarly to 1 (b), breaker locking claws 11b and 11c, a narrow connecting portion 11d between the poles, and a base plate dividing slit 11e are formed.
[0016]
When the flat board 11a is overlaid on the base board 4 (see FIG. 3) and screwed, the latching claws 11b cut and raised in the left and right areas are assembled when the board is installed in the distribution board. The branch breakers are fitted one by one between 11c and held.
[0017]
【The invention's effect】
As described above, according to the configuration of the present invention, the following effects can be obtained.
To also setting the breaker mounting area are distributed on the left and right sides of the base plate, so as to form cutting and raising a breaker locking pawl arranged on the lower part in accordance with the arrangement pitch of the branch breakers for each of the areas, mutual each pole The base plate split slits are cut out in the left and right direction, leaving a narrow joint between them, which reduces the number of parts for branch breaker assembly and alignment adjustment by half compared to the conventional structure. It is possible to efficiently assemble the electrical panel.
In addition, the left and right ends of the base plate, and the central portion are leg pieces that are screwed to the base plate in the panel, and the breaker mounting portion in the left and right regions is bent and formed into a raised base shape. There is no need to prepare a stand as a separate part, and the number of parts can be reduced.
In addition, a dovetail connection projection is formed on one side of the upper and lower edges of the base plate, and a connection groove having the same shape as the connection projection is formed on the other side, thereby connecting a plurality of breaker mounting bases in the distribution board. When installing, by fitting the connecting groove of the mounting base that extends to the connecting protrusion, the mounting bases can be connected to each other without any misalignment to the left and right, and the connected base plate is handled as an integral part during alignment adjustment. Can do.
[0018]
In the breaker mounting base, the connecting portions are formed at each leg piece and the trapezoidal corner portion of the breaker mounting portion, so that when the poles are separated, the connecting parts can be easily separated and the poles are not separated. The rigidity of the mounting base can be ensured.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an embodiment corresponding to Embodiment 1 of the present invention, in which (a) is a side view of an assembled state in which a branch breaker is mounted, and (b) is an external perspective view showing the structure of a breaker mounting base. FIG. 2 is an external perspective view of a breaker mounting base corresponding to Embodiment 2 of the present invention. FIG. 3 is a front perspective view showing a door open state of a distribution board. FIG. 4 is a breaker incorporated in the distribution board of FIG. It is a conventional configuration diagram of the mounting base, (a) is a side view of the assembled state with a branch breaker installed, (b) is an external perspective view showing the structure of the breaker mounting base
1 Panel board 3 of distribution board 4 Inner door 4 Base plate 6 Main bus bar 7 Branch breaker 11 Breaker mounting base 11a Base plate 11b, 11c Locking claw 11d Connecting portion 11e Base plate dividing slit 11g Connection protrusion 11h Connection groove

Claims (2)

This is a multiple breaker mounting base that fixes the branch breaker connected to the bus bar along the main bus bar that is vertically oriented in the center of the distribution board and fixed to the bus bar. The breaker mounting areas are set by distributing them to the left and right sides, and the breaker locking claws arranged in the upper and lower stages are cut and raised in accordance with the arrangement pitch of the branch breakers for each area, and the narrow connections between the poles In a branch breaker mounting base for a distribution board that is formed by notching slits for splitting the base plate in the left-right direction leaving the part ,
The left and right ends of the base plate, and the central portion as leg pieces for fastening the screws to the base plate in the panel, the breaker mounting portion in the left and right regions are bent and raised into a trapezoidal shape, and the upper and lower ends of the base plate are A branch breaker mounting base for a distribution board , wherein a dovetail-shaped connecting projection is formed on one side of the edge and a connecting groove having the same shape as the connecting projection is formed on the other side . 2. A branch breaker mounting base for a distribution board according to claim 1, wherein the connecting portion is formed at each leg piece and a trapezoidal corner portion of the breaker mounting portion.

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