JP2604950Y2 - Switchboard - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board provided in a power receiving room, a power distribution room, or the like.

[0002]

2. Description of the Related Art Conventionally, a distribution board to be installed in a power receiving room or a power distribution room has a box-shaped panel body manufactured in advance in a box-shaped main body, in which an internal unit such as a breaker is housed and arranged. And carried on-site construction.

[0003] However, this distribution board has a problem that it requires a lot of labor due to its heavy weight at the time of carrying in, and that the wiring work is troublesome because the board body has a box-like fixed shape. Therefore, the present inventor has proposed a distribution board as shown in FIG. 8 (Japanese Patent Application No. 3-279892).
This includes a back plate 10 for disposing an inner unit (not shown),
Upper and lower frames 20, 30 having side plates 21 and a front plate 22 connecting the side plates 21 to each other and arranged at upper and lower positions in front of the back plate 10, and upper and lower frames 20, 30 on both front sides of the back plate 10. It has a duct 40 disposed between them, and a protection plate 50 disposed at a portion surrounded by both side ducts 40, 40 and the upper and lower frame portions 20, 30.

The back plate 10 has two metal frames 11 each having a substantially U-shaped cross section to which an inner unit such as a breaker is fixed, which are arranged in parallel.
It is fixed to a mounting wall such as a power receiving room or a power distribution room using the fixing plate 13. The upper frame portion 20 includes a side plate 21 mounted and fixed to upper ends of the front surfaces of the frames 11 at both ends of the back plate portion 10 so that an outer surface thereof is substantially the same as the outer surface of the frame 11.
Front plate 2 that closes the front opening by connecting 1 and 21 with screws
2, and an upper plate 24 fixed to the side plates 21 and 21 with screws and closing the upper surface opening. The lower frame portion 30 includes side plates 31, which are mounted and fixed to the lower ends of the front surfaces of the frames 11, 11 at both ends of the back plate portion 10 so that the outer surface is substantially the same as the outer surface of the frame 11, respectively. And a front plate 32 that connects the two with screws and closes the front opening. The upper and lower frame portions 20, 30 are provided with protection plate fixing plates 25, 35 protruding inward.

The duct 40 has a substantially U-shaped cross section and is formed of a resin molded product having an open front surface and upper and lower end surfaces. The outer surface of the frame 11 and the outer surface of the outer side piece are provided on the front surface of the frame 11 of the back plate 10. The screws are fixed so that they are substantially the same. The duct 40 accommodates an electric wire conductor (not shown) for connection from a branch breaker (not shown) to an external load. A lid 42 is detachably attached to the front surface of the duct 40 so that the front opening can be closed.

The protection plate 50 is made of an iron plate,
The holes 51 and 52 are provided between the upper and lower frame portions 20 and 30 so that the handles and the like are exposed to the outside through the holes 51 and 52. And a duct 40 for closing a front opening of a space surrounded by the ducts 40 and 40. In this example, the space is divided into upper and lower portions. The upper protective plate 50 has an upper end portion on a protective plate fixing piece 25 of the upper frame portion 20 and a lower end portion on an upper half of a fixing stand (not shown) disposed at the front center of the back plate portion 10. Each is mounted, and screws are screwed and fixed. The lower protective plate 50 is placed on the fixing base at the upper end and on the protective plate fixing piece 35 of the lower frame 30 at the lower end, and screwed and fixed.

In order to apply the electric circuit power applied to this distribution board to another distribution board arranged side by side, first, cutouts are formed on both sides of the duct 40. Next, the upper frame part 20 of one distribution board
Alternatively, the electric circuit power drawn from the lower frame portion 30 and applied to the main breaker is routed through one of the distribution boards by a connection conductor (feed line) and inserted through the cutout into the other distribution board. Next, the connection is performed by connecting the connection conductor to the main breaker in the other distribution board.

[0008]

According to the above-mentioned conventional distribution board, since it can be disassembled into the back plate, the protection plate, the duct, and the upper and lower frame parts, individual members are not required when carrying in. It is light in weight, so it can be carried in with a small number of hands, and if the lid of the duct is removed, it opens to the front, making it easy to carry out wiring work and maintenance and inspection of wiring.

However, in order to apply the electric circuit power applied to the distribution board to another distribution board arranged side by side, cutouts are formed on both sides of the duct, and the upper frame portion of one of the distribution boards or The circuit power drawn from the lower frame and applied to the main breaker is routed through one connection board through the connection conductor, inserted through the notch into the other switchboard, and connected to the main breaker in the other switchboard. Since the connection is performed by connecting conductors, there is a problem that the electric wire conductor in the duct is an obstacle, and wiring work in a state where a plurality of distribution boards are arranged in parallel is troublesome.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a distribution board which facilitates wiring work in a state where a plurality of distribution boards are arranged side by side. It is in.

[0011]

According to a first aspect of the present invention, there is provided a distribution board having a back plate portion provided with an inner unit, a side plate, and a front plate connecting the side plates. The upper and lower frame portions are arranged at the front and bottom positions of the front of the back plate portion, the ducts are respectively arranged between the upper and lower frame portions on both sides of the front surface of the back plate portion, and the ducts are arranged on both sides and the portion surrounded by the upper and lower frame portions. And a protection plate to be provided, wherein the side plates of the upper and lower frame portions are
A fixing piece fixed to the back plate and ducts from both ends of the fixing piece
Two vertical pieces extending forward from the surface of the
A supporting piece that connects the two vertical pieces and supports the front plate,
A frame having an opening through which a connection conductor connected to the inner unit can be inserted
It has a body configuration.

According to a second aspect of the present invention, there is provided a distribution board having a structure in which an insulator is attached to an opening end surface of the side plate of the first aspect.

[0013]

According to the first aspect of the present invention, in the wiring in which a plurality of distribution boards are arranged in parallel, the connection conductors extend from the opening of one distribution board to the opening of the other distribution board. And can be inserted by inserting. Also, the side plates of the upper and lower frames are attached to the back plate.
The fixed piece to be fixed and the duct surface from both ends of the fixed piece
Two vertical pieces extending in the front direction, and the two vertical pieces
And a support piece for connecting the pieces and supporting the front plate, and
As a frame with an opening through which the connected connection conductor can be inserted
Attach the side plate that is the frame as it is during assembly
Thus, an opening for inserting the connection conductor can be provided. Special
The two vertical pieces of the side plate in front of the duct surface
Because it is extended, the top of the support piece supports the front piece.
The upper and lower openings of the lower frame and the opening for connecting conductor insertion on the side plate side
Can be increased.

According to the configuration of the second aspect, in addition to the operation of the first aspect, even if the coating of the connection conductor is broken, wiring can be performed without directly touching the opening end surface.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Members having the same basic functions as those of the conventional example are denoted by the same reference numerals.

In this apparatus, two distribution boards A and B are arranged in parallel in order to use a circuit power supply at the same place.

That is, one distribution board A includes a back plate 10 provided with an internal unit, upper and lower frame portions 20 and 30 arranged at upper and lower positions on the front surface of the back plate 10, and Upper and lower frame parts on both sides of front 20,3
0, and protective plates provided at the portions surrounded by the ducts 40, 40 on both sides and the upper and lower frame portions 20, 30.
And 50.

The back plate portion 10 has three metal frames 11 each having a substantially U-shaped cross section arranged in parallel, and bridges between the frames 11 above and below the frames 11 by metal wire support rails 12 and 12. Fixed. An inner unit 13 such as a main and branch breakers and a metal mounting plate (not shown) on which these breakers are mounted are disposed on the upper surface of the frame 11. This internal unit 13
The connection conductor 13a (feed line) is connected to the main breaker of the distribution board and is connected to the main breaker of another distribution board. The wire conductor 13b of the branch breaker is connected to a load (not shown) after passing through the duct 40.

The upper frame portion 20 is provided with metal side plates 21 mounted and fixed to the front opening portions of the frames 11 at both ends of the back plate portion 10 so that the outer surfaces are substantially the same as the outer surface of the frame 11. And a front plate 22 fixed between the front surfaces of the side plates 21 and 21 on both sides with screws to close the front opening. The side plate 21 is formed of a frame, and includes a fixed piece 21a fixed to the back plate portion 10 and two vertical pieces 21b, 21b extending vertically from both ends of the fixed piece 21a and vertical pieces 21b, 21b.
And a support piece 21c for supporting the front plate 22 and connecting to the inner unit 13 (main breaker).
(Electric circuit power supply line) has an opening 21d through which it is inserted. As shown in FIG. 6, the front plate 22 is provided with an L-shaped hooking portion 23 for hooking a hooked portion of the protective plate 50 described later.

Similarly to the upper frame 20, the lower frame 30 is placed on the front openings of the frames 11, 11 at both ends of the back plate 10 so that the outer surface is substantially the same as the outer surface of the frame 11. A metal side plate 31 to be fixed, and a front plate 32 fixed between the front surfaces of the side plates 31 on both sides by screws to close the front opening.
And The side plate 31 has a frame like the side plate 21 .
The front plate 3 is composed of a fixing piece 31a fixed to the back plate 10 and two vertical pieces 31b, 31b extending from both ends of the fixing piece 31a in the front direction and the vertical pieces 31b, 31b.
2, and an opening 31d through which a connection conductor 13a (electric power supply line) connected to the internal unit 13 (main circuit breaker) is inserted. The front plate 32 is provided with an L-shaped engagement piece 33 having an engagement hole 34 with which an engagement projection of a protection plate 50 described later is engaged.

The duct 40 is formed in a U-shaped cross section from a resin molded product having an open front surface and upper and lower end surfaces, and is fixed between upper and lower frame portions 20 and 30 on both sides of the front surface of the back plate portion 10 by screws. A number of notches 41 are provided on the inner side piece of the duct 40 so that the electric wire conductor can be introduced into and taken out of the duct 40. A lid 42 is detachably attached to the front surface of the duct 40 so that the front opening can be closed.

The protection plate 50 is made of a metal plate and has ducts on both sides.
Holes 51 and 52 for projecting the handle and the like of the breaker 14 to the outside are provided between the upper and lower frame portions 20 and 30 at the same time.
And a duct 40, 40 for closing the front opening of the space surrounded by the ducts. As shown in FIG. 6, the protection plate 50 is provided with a hooked portion 53 to be hooked on the hooking portion 23 of the upper frame portion 20, and as shown in FIG. An engagement projection 54 that engages with the hole 34 is provided.

The other distribution board B is provided with a middle frame section 60 between the upper and lower frame sections 20 and 30 of the back board section 10 of the one distribution board A, and the two protection boards 50 are provided by the middle frame section 60. , 50 are divided and fixed, and the description is omitted.

In order to apply the electric circuit power applied to the distribution board A to the other distribution board B arranged in parallel, first, the main power is drawn from the upper frame portion 20 or the lower frame portion 30 of the distribution board A. The circuit power supply applied to the breaker is routed through one of the distribution boards A by the connection conductor 13a (feed line), and the opening 21d of the side plate 21 or the side plate
One of the openings 31d of 31 (the one closer to the main breaker) is inserted into the other distribution board B. Next, the connection is performed by connecting the connection conductor 13a to the main breaker in the other distribution board B.

A frame having openings on all side plates of the upper and lower frames.
It is not limited to the body, at least the side plates of the upper and lower frame parts
One may be a frame having an opening. Also, if an insulator is attached to this opening, even if the coating of the connection conductor is broken, it is difficult for current to flow to the distribution board, and therefore, it is difficult for the user to receive an electric shock.

[0026]

According to the first aspect of the present invention, in a wiring in which a plurality of distribution boards are juxtaposed, a connecting conductor is connected through an opening of one of the distribution boards to the other. The wiring work can be easily performed in a state in which a plurality of distribution boards are arranged side by side, without the electric wire conductor in the duct becoming an obstacle. Also, the side plates of the upper and lower frames are attached to the back plate.
The fixed piece to be fixed and the duct surface from both ends of the fixed piece
Two vertical pieces extending in the front direction, and the two vertical pieces
And a support piece for connecting the pieces and supporting the front plate, and
As a frame with an opening through which the connected connection conductor can be inserted
Attach the side plate that is the frame as it is during assembly
In this way, an opening for connecting conductor insertion can be
There is no need to open holes in the side plates for conductor insertion.
The opening for inserting the connecting conductor can be easily formed
You. In particular, place the two vertical pieces of the side plate in front of the duct surface
Since it extends in the direction, the supporting piece supports the front piece
The upper and lower openings of the upper and lower frames and the side plate side for connecting conductor insertion
The opening can be enlarged and the connection conductor can be inserted
Work becomes easy.

According to the distribution board of the second aspect, even if the coating of the connection conductor is broken, wiring can be performed without directly touching the opening end face, and in addition to the effect of the first aspect, electric shock is less likely to occur.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view of that of FIG.

FIG. 3 is an exploded perspective view showing a state in which the inner unit of FIG. 1 is removed.

FIG. 4 is a cross-sectional view of FIG. 2 cut along AB.

FIG. 5 is a cross-sectional view showing the state of FIG. 4 with the inner unit removed.

FIG. 6 is an explanatory view showing a state in which a hook of FIG. 2 is hooked on a hooked portion.

FIG. 7 is an explanatory view showing a state in which the engaging projections of FIG. 2 are engaged with the engaging holes.

FIG. 8 is a perspective view showing a conventional example.

[Explanation of symbols]

 10 Back plate 13 Inner unit 20 Upper frame 21 Side plate 21d Opening 30 Lower frame 31 Side plate 31a Opening 40 Duct 50 Protection plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-150604 (JP, A) JP-A-2-311102 (JP, A) JP-A-56-107722 (JP, A) JP-A-56-107722 107723 (JP, A) JP-A 64-52285 (JP, U) JP-A 4-97408 (JP, U) JP-A 4-134104 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H02B 1/40-1/42 H02B 1/20

Claims (2)

(57) [Scope of request for utility model registration] 1. A back plate portion provided with an inner unit, an upper and lower frame portion having a side plate and a front plate connecting the side plates and arranged at upper and lower positions on the front surface of the back plate portion, and the front surface of the back plate portion In a distribution board provided with ducts respectively disposed between the upper and lower frame portions on both sides, and a protection plate disposed at a portion surrounded by both side ducts and the upper and lower frame portions, the side plates of the upper and lower frame portions are , A fixing piece fixed to the back plate,
Extends from both ends of the fixing piece in front of the duct surface
Two vertical pieces and connecting these two vertical pieces to support the front plate
And a connecting piece to be connected to the internal unit.
A distribution board characterized by having a frame body having an opening through which it can pass . 2. An insulator is attached to an open end surface of the side plate .
The distribution board according to claim 1, wherein :