JP3179985B2 - 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 used in ordinary households.

[0002]

2. Description of the Related Art A conventional example of this type of distribution board is shown
The one shown in No. 60-156813 exists. In this device, a wooden board for mounting various electric devices such as a current limiter or a main breaker is fixed to a lower box, and various breakers such as a branch breaker are arranged on an inner unit fixing plate. Is fixed to the lower box.

In a distribution board used in a factory or a work place, an inner unit fixing plate in which a main breaker and a branch breaker are arranged is bent to form a concave shape. A wooden board is installed.

[0004]

However, according to this switchboard, the wooden board is directly attached to the lower box, or the inner unit mounting plate is bent to form a concave shape. However, there is a problem that electric devices such as a current limiter or a main breaker of various heights cannot be supported, and the height of each electric device differs.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a distribution board which can change a position in a height direction of attaching a wooden board, and can cope with various electric devices having different heights. .

[0006]

The distribution board according to the present invention has a lower box having an opening on one side, a breaker mounting portion to which various breakers are mounted, and a wooden board for mounting various electric devices. In a distribution board provided with an inner unit fixing plate fixed at a predetermined interval from the inner bottom plate, a hole is formed in the inner unit fixing plate, and a mounting piece having a mounting portion mounted on an edge of the hole is provided. The attachment portion is attached to an edge of the hole by being inserted into the hole, and the wooden board is attached to the attachment piece.

[0007]

According to the structure of the present invention, a hole is formed in the inner unit fixing plate, a mounting piece having a mounting portion to be mounted on an edge of the hole is inserted into the hole, and a wooden board is attached to the mounting piece. By preparing mounting pieces having different heights and selecting mounting pieces to be inserted into the holes, it is possible to cope with various electric devices having different heights.

[0008]

An embodiment of the present invention will be described with reference to FIGS. That is, the distribution board includes the lower box 1, the inner unit fixing plate 2, and the upper lid 4. The lower box 1 has an opening on one side and is buried in a wall 10 as shown in FIG. 13. The lower box 1 is made of metal and is formed in a vertically long shape, and the opening edge supports the inner unit fixing plate 2. Both have a width capable of forming the screw holes 7 and 8, and the inner end side thereof is turned inward to form a folded portion 11. The screw holes 7 and 8 are formed in a pair at each of both side edges 5 in the horizontal direction and one edge 6 in the vertical direction at the opening edge. Also, a vertical screw hole 8 in the lower box 1
An input / output line portion 9 'is formed on the side plate of the other edge portion opposite to one edge portion having the same, and the input / output line portion 9 is provided on all other three side plates of the lower box 1.

The internal unit fixing plate 2 has a frame 29 which is a breaker mounting portion to which various branch breakers 3 are mounted, and a wooden board for mounting various electric devices (not shown) such as a limiter. 21 and is fixed at a predetermined distance from the bottom plate in the lower box 1. In the embodiment, the inner unit fixing plate 2 is composed of the main unit unit 15 and the branch unit unit 16, and is formed on the opening edge of the lower box 1 to form the mounting holes 12, 13 which are aligned with the screw holes 7, 8. It has a mounting portion 14 on the side and is housed in the lower box 1. The main unit 15 has a substantially inverted U-shape as seen in FIG. 5 when viewed in plan, and the mounting portions 14 extend outward from both sides. The main unit 15 has a main breaker mounting portion 16 on its bottom surface and a hole 17 formed therein.
A branch unit connecting portion 18 is provided at the lower end of the bottom surface.
A main breaker 19 wired through the input / output lines 9 and 9 ′ is mounted on the main breaker mounting portion 16, and a metal mounting piece 20 is mounted on the hole 17. The mounting piece 20 is the hole 1
7, having an attachment portion 20c attached to the edge of
A side plate 20b is bent up and down, and a tip thereof is bent outward to form a mounting portion 20c so as to engage with the edge of the hole 17,
It is attached to a screw hole 20d formed at the edge of the hole 17 by a screw 20a through a hole formed in the attachment portion 20c. A wooden board 21 to which an electric device (not shown) such as a limiter is attached is attached to the inner bottom surface of the attachment piece 20. When a limiter or the like is attached to the wooden board 21, the input power supply line is connected to this electric device, and the electric wire connection portions 19'a to 19'a to 1 on the input side of the main breaker 19 are connected to the load side of the electric device.
9'c is connected.

A holding frame 22 is provided at the upper end of the main unit 15. The holding frame 22 is formed in a substantially gate shape, and a leg 24 at one end of the holding frame 22 is hinged by a hinge 23 attached to a side plate 15a of the main unit 15, and a leg 25 at the other end is connected to a height adjusting member. The main unit 15 is screwed to the bottom of the main unit 15 via a screw 22a. Also, a locking tongue piece 57 and a mounting hole 5 are provided at the center of the holding frame 22.
6 to form a fixing portion of the upper lid 4.

Next, as shown in FIG. 4, the branching unit 16 includes a pair of frames 29 as a breaker mounting portion,
It comprises a bar fixing base 30 located between the frames 29 and a mounting part 14 'on the lower end side. The frame 29 is formed of a vertically long rectangular plate and has mounting holes at the upper and lower ends, and the upper end is attached to the connecting portion 18 of the main unit 15 by connecting screws 31. The lower end of the frame 29 is connected to the mounting portion 14 ′ by a connecting screw 32. In addition, bar fixing base 3
As shown in FIG. 10, a pair of voltage bars 38 are arranged in a vertical position in FIG.
Neutral bar 3 at a position higher than bar fixing base 30 than 8
9 are arranged parallel to the voltage bar 38. Reference numeral 43 (for example, FIG. 7) denotes a bar cover that covers the voltage bar 38 and the like, which is retained by the fixing claws 30a (FIG. 6) of the bar fixing base 30. 30b is a bar support.

The mounting portion 14 of the inner unit fixing plate 2 which is mounted on both side edges of the opening edge of the lower box 1 has a rising portion 33 extending from the side plate 15a of the main unit 15 and is provided with a rising portion 33. It extends over the opening edge of the lower box 1 and engages with both side edges of the opening edge. The mounting portion 14 'of the inner unit fixing plate 2 mounted on one edge of the opening edge of the lower box 1 is bent in a substantially Z-shape to connect the pair of frames 29 in one piece and to connect the other piece to the opening edge. The middle step portion is engaged with the edge portion to form a rising portion 33. A locking tongue piece 57 for mounting the upper lid, which is to be a fixing part of the upper lid 4 facing the fixing part of the holding frame 22, is provided on the mounting part 14 '.
And an attachment hole 56 are formed.

The mounting hole 13 of the mounting portion 14 'is a screw hole 8
A large-diameter hole 13 ′ is formed continuously with the mounting hole 13 in the embodiment. The mounting holes 12 of the mounting portion 14 are a pair of long holes respectively aligned with the pair of screw holes 7. The mounting holes 12 are inclined long holes 12 a and 12 b, respectively, around which the inner unit fixing plate 2 can rotate. Mounting holes 12
Are formed symmetrically with respect to the center of both side edges. The oblong hole 12b forms a large-diameter hole 12 'continuous with the oblong hole 12b. The screw 34 screwed into the screw holes 7 and 8 is shown in FIG.
As shown in the figure, the head has an outer shape smaller than the width of the mounting holes 12 and 13 of the oblong holes, and a washer 36 larger than the width of the mounting holes 12 and 13 is provided at the neck. The head of the screw 35 has a diameter larger than the width of the oblong slot 12b and the mounting hole 13, but smaller than the inner diameter of the large-diameter holes 12 ', 13'. When fixing the inner unit fixing plate 2 to the lower box 1, screws 34 are screwed into the screw holes 7 and 8 in advance, and the screws 35 are temporarily screwed. ′ Through the head of the screw 35 and at the same time the hole 13 and the oblong slot 1
2a is passed through the head of the screw 34, and is placed on the washer 36. The inner unit fixing plate 2 is moved while the mounting hole 13 and the oblique long hole 12a are guided by the head of the screw 34, and the head of the screw 35 is mounted on the mounting hole. 13 and the inclined long hole 12b, and the screw 35 is tightened and fixed. FIG. 8 shows a temporarily fixed state, in which the inner unit fixing plate 2 is fixed.
Is inclined, the inner unit fixing plate 2 is rotated about the mounting hole 13 as a fulcrum while the screw 35 is loosened, and the oblong elongated holes 12a and 12b are moved with respect to the screws 34 and 35, thereby making the inner unit. With the fixing plate 2 in the correct posture as shown in FIG.
The mounting portions 14 are mounted on the lower box 1 by tightening the screws 34 and 35.

A plurality of branch breakers 3 are arranged in a row in the vertical direction on each frame 29 of the internal unit fixing plate 2, and each of the wire connection portions 3a and 3b is oriented in the horizontal direction. Further, the voltage bar 38 and the neutral bar 39 of the bar fixing base 30 between the frame 29 and the input-side electric wire connection portion 3 of the branch breaker 3
a ', 3b', and the upper terminals of the voltage bar 38 and the neutral bar 39 and the output terminal 19 of the main breaker 19.
a to 19a are connected via feed bars 40 to 42. As shown in FIG. 6, the feed bars 40 to 42 are formed by bending both ends of a substantially U-shaped strip-shaped conductive plate in opposite directions to each other, and have step bending portions 40c to 40b formed at one ends 40a to 42a. The height difference between the one end portions 40a to 42a and the other end portions 40b to 42b is adjusted by 42c, and the one end portions 40a to 42a are connected to the wire connection portions 19a to 19c on the output side of the main breaker 19, Other end portions 40b to 42
b is connected to upper ends of the voltage bar 38 and the neutral bar 39 by connection screws 38a and 39a. 3a,
Reference numeral 3b denotes an electric wire connection portion on the output side of the branch breaker 3.

The upper cover 4 has a window (not shown) through which the operating handle 44 of the branch breaker 3 protrudes, and is attached to and fixed to the inner unit fixing plate 2 so that the opening of the lower box 1 can be opened and closed. .
The upper lid 4 is made of a synthetic resin and has a door 4a for opening and closing a window. The upper lid 4 has a fixture 58 and is attached to the attachment hole 56 and the locking tongue piece 57. As shown in FIG. 14, the mounting tool 58 includes a horizontal shaft 59 mounted on the upper lid 4 and an operation lever 60 rotatably mounted on the horizontal shaft 59.
And a hook-shaped stopper piece 61 attached to the back side of the operation lever 60, and a locking hole 62 that engages with the locking tongue piece 57. As shown by the imaginary line in FIG. 14, the locking hole 60 is fitted to the locking tongue piece 57 with the operation lever 60 opened, and the locking piece 61 is closed by closing the operation lever 60.
6, the hook 61a at the tip of the retaining piece 61 is locked on the back side of the hole edge of the mounting hole 56 to be in the retaining state,
This results in an attached state. Reference numeral 60a denotes a locking hook for holding the closed state of the operation lever 60, which is elastically and removably locked in a locking hole 60a 'formed in the upper lid 4. Reference numeral 60b denotes a stopper that regulates the closing position of the operation lever 60.

According to this embodiment, the hole 1 is
7, and an attachment portion 20 attached to the edge of the hole 17.
c is inserted into the hole 17 and the wooden board 21 is attached to the mounting piece 20, so that the mounting pieces 20 having different heights are provided.
Is prepared, and by selecting the mounting piece 20 to be inserted into the hole 17, it is possible to cope with various electric devices having different heights.

[0017]

According to the distribution board of the present invention, a hole is formed in the inner unit fixing plate, a mounting piece having a mounting portion to be mounted on an edge of the hole is inserted into the hole, and a wooden board is mounted on the mounting piece. Because I wore
By preparing mounting pieces having different heights and selecting the mounting piece to be inserted into the hole, there is an effect that it is possible to cope with various electric devices having different heights.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a lower box is closed by an upper lid.

FIG. 3 is a front view of a state in which an upper lid is removed.

FIG. 4 is a perspective view showing a main unit unit and a branch unit unit.

FIG. 5 is an exploded perspective view showing a main unit of the inner unit fixing plate.

FIG. 6 is an exploded perspective view showing a main breaker, a bar connection table, and a feed bar.

FIG. 7 is a front view showing a state where a bar cover is attached.

FIG. 8 is a front view of the inner unit fixing stand in a temporarily attached state.

FIG. 9 is a sectional view of a mounting portion.

FIG. 10 is a front view showing a connection state of a feed bar.

FIG. 11 is a sectional view taken along line AA of FIG. 10;

FIG. 12 is a partially enlarged view of a connection portion between a feed bar and a branch breaker.

FIG. 13 is a partial sectional view of a state where the lower box is embedded in a wall.

FIG. 14 is a sectional view of a mounting structure of the upper lid.

[Description of Signs] 1 Lower Box 2 Inner Unit Fixing Plate 3 Branch Breaker 16 Main Breaker Attachment 17 Hole 20 Attachment Piece 20c Attachment 21 Wood Board 29 Frame as Breaker Attachment

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-31540 (JP, A) JP-A-55-158607 (JP, U) JP-A-59-18510 (JP, U) JP-A-4-185 101204 (JP, U) Japanese Utility Model Showa 49-84632 (JP, U) Japanese Utility Model Showa 64-25808 (JP, U) Japanese Utility Model Utility Model Showa 64-50611 (JP, U) Japanese Patent Publication 48-39117 (JP, B1) JIN 38-1756 (JP, Y1) JIN 43-17977 (JP, Y1) (58) Fields studied (Int. Cl. ⁷ , DB name) H02B 1/40-1/42 H02B 1/04

Claims (1)

(57) [Claims] 1. A lower box having an opening on one side and a breaker mounting portion to which various breakers are mounted, and a wooden board for mounting various electric devices is mounted and fixed at a predetermined distance from a bottom plate in the lower box. A power distribution panel provided with an inner unit fixing plate, wherein a hole is formed in the inner unit fixing plate, and a mounting piece having a mounting portion to be mounted on an edge of the hole is inserted into the hole so that the mounting portion has the hole. A power distribution panel, wherein the wooden board is mounted on the mounting piece.