JPH07298424A - Flush mount wall distribution board - Google Patents

Abstract

PURPOSE:To provide a flush mount wall distribution board, the dimension of whose width can be shortened and also which is handy. CONSTITUTION:This distribution board is equipped with a lower box 1, which is to be buried in a wall face, a main trunk breaker 23, which is attached within this lower box 1, a main bar 36, which is arranged horizontally below the main trunk breaker 23 of the lower box 1 and is connected to the main trunk breaker 23, and a group of branch breaker 29 whose handles 29a are disposed to be operable in vertical direction along this main bar 36.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board for burying a wall surface.

[0002]

2. Description of the Related Art A conventional distribution board for burying a wall surface in a house is shown in FIG.
4 shows. That is, in this distribution board for burying walls, a main circuit breaker 71 is arranged on the left side of the figure so that the handle 70 can be operated vertically, and a handle 73 is operated vertically on the right side of the main circuit breaker 71. Multiple branch breakers 72 along the horizontal main bar 74 to allow
Are installed.

[0003]

However, the number of branch breakers has increased with the increase in the number of home electric appliances and the increase in load capacity in recent years. Along with this, when the width in the horizontal direction becomes large, for example, in the case of a dozen circuits, the standard dimension between the main pillar of the wall and the stud exceeds 45 cm, and when it is buried at that position, the stud is cut. The distribution board has to be buried.

On the other hand, in a light distribution board used in a building, factory, store, etc., a main bar 76 is vertically arranged below a main breaker 71 as shown in FIG. 15, and branch breakers are provided on both sides of the main bar 76. Although the width dimension in the horizontal direction can be shortened by installing the 72, the handle 73 of the branch breaker 72 is operated in the horizontal direction, so that there is a disadvantage in that it is not easy to use.

Therefore, an object of the present invention is to provide a distribution board for burying a wall surface which can be reduced in width dimension and is easy to use.

[0006]

According to a first aspect of the present invention, there is provided a distribution box for burying a wall surface in which a lower box buried in a wall surface, a main breaker mounted in the lower box, and the main breaker of the lower box are provided. A main bar that is arranged in the lower part in the horizontal direction and is connected to the main breaker, and a group of branch breakers that are arranged in a row so that the handle can be operated in the vertical direction along the main bar. is there.

According to a second aspect of the present invention, there is provided a distribution board for burying a wall surface according to the first aspect.
In, the wiring space is formed between the main breaker and the branch breaker group and the bottom plate of the lower box.

[0008]

According to the distribution board for burying a wall of the present invention, since the horizontal main bar is arranged below the main breaker and the branch breakers are arranged in line along the main bar, the handle is vertically moved. Since the branch breaker can be installed operably, the usability can be improved. Moreover, since the main bar is arranged horizontally below the main breaker, the width in the horizontal direction can be shortened.
The distribution board can be stored between the main pillars and the studs and between the studs in the wall without cutting the studs.

According to the distribution board for burying a wall surface of claim 2, in claim 1, a wiring space is formed between the main breaker and the branch breaker group and the bottom plate of the lower box. In addition to the function, the wiring space for each branch breaker can be secured without increasing the horizontal width dimension.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. That is, this wall surface-embedded distribution board has a lower box 1, a master unit 2, a branch unit 3, and an inner lid 4. The lower box 1 is made of metal, is embedded in the concave portion 6 of the wall surface 5 and attached to the pillar of the wall as shown in FIG. 7, and has a cutout opening 7 for wire passage formed in the upper plate. The notch opening 7 is closed by a wiring cover 8 made of a synthetic resin having engagement pieces 9 at both ends which are slidably engageable with the edge 7a with the inner cover 4 removed. The knockout hole 10 of the
I'm trying to beat 0. Also lower box 1
Screw holes 20 for mounting the internal unit are formed on the upper and lower sides of the opening edge, that is, on the front ends of the upper plate and the lower plate, respectively.
7 is temporarily tightened. Reference numeral 21 (shown in FIG. 2 and the like) is a grounding terminal whose example is a screw provided on the bottom plate.

The main unit 2 and the branch unit 3 forming the inner unit 70 are a pair of frames 1 extending in the vertical direction.
It is attached to the lower box 1 via 1. These frames 1
Reference numeral 1 denotes a strip-shaped plate having a U-shaped cross-section, forming a stepped portion 12 for forming a wiring port at an upper position, and having a projecting portion 13 projecting forward at an upper end portion and a lower end portion. Mounting pieces 14 extend outward from the tip of the portion 13 in the longitudinal direction, and a mounting hole 15 having a daruma shape is formed in the mounting pieces 14. In the frame 11, with the main unit 2 and the like attached, for example, as shown in FIG. 4, the large diameter side of the lower side of the daruma-shaped mounting hole 15 is inserted into the head of the mounting screw 17 of the lower box 1, It is mounted by passing the neck portion of the mounting screw 17 through the small diameter side 16 of the mounting hole 15 and tightening the temporary screw 17. At this time, the tip of the mounting piece 14 is located on the wall surface 5 as shown in FIG. Further, the length of the protruding portion 13 is made shorter than the height of the side plate of the lower box 1 to form a space for forming the wiring space 40 between the bottom plate 1a of the lower box 1 and the frame 11.

The main unit 2 is composed of a main breaker 23, a wooden limiter mounting plate 19 and a receiving plate 22. The main breaker 2 is mounted on the left side of the receiving plate 22, and the limiter mounting plate 19 is mounted on the right side of the main breaker 2. In the main breaker 2, the handle 2a is operated in the vertical direction, the input terminal connected to the power source is located on the upper end side, and the output terminal connected to the load is located on the lower end side. Then, screws 24 are passed through the holes 22a on both sides of the receiving plate 22 to be screwed into the screw holes 41 formed on the upper side of the stepped portion 12 of the frame 11 so as to be bridged, and the knockout holes 10 are passed through the input terminals. Power line 25
(FIG. 7) are connected. When a limiter (not shown) is attached to the limiter attachment plate 19, the power supply line 25 is connected to the limiter, and the input side of the main breaker 2 is connected to the load side of the limiter.

The branch unit 3 has a pair of mounting frames 27 that are bridged to the lower side of the stepped portion 12 of the frame 11.
And the mounting plate 2 mounted on these mounting frames 27
8 and a branch breaker 29 and the like. The mounting frame 27 is also formed by a strip plate having a U-shaped cross section, and the vicinity of both ends thereof is bent into a substantially Z shape, and a wiring port whose middle portion floats from the bottom body 1a of the lower box 1 is formed on the back surface side. The daruma-shaped hole 30 is formed, and the large diameter side of the daruma-shaped hole 30 is loosely fitted to the head of the screw 33 that is temporarily tightened in the screw hole 42 formed in the frame 11, and the small diameter side is slid on the neck to be locked. By doing so, it is attached to the frame 11. A positioning recess 34 is provided at a predetermined position in the middle of the mounting frame 27,
A positioning projection 28a is formed in the positioning recess 34 by forming a screw hole in the positioning plate
And is attached to the screw hole by a screw (not shown) through the hole of the positioning protrusion 28a, and the attachment plate 28 is attached to the attachment frame 27.

A portion of the mounting plate 28, which is located between the mounting frames 27 at the central portion in the vertical direction, is recessed toward the bottom plate 1a, and three main bars are arranged horizontally in the central portion via an insulating plate 35. 36 are provided, and branch breakers 29 are horizontally arranged along the main bar 36 on the upper side and the lower side of the central portion. Of the three main bars 36, those on both sides are arranged parallel to each other on the insulating plate 35, and the one on the center is supported by a support base 35a formed on the insulating plate 35 and arranged at a position more floating than those on both sides. Has been done. In addition, each main bar 36 has a main connection terminal 37, which is a screw in the embodiment, at its end, and the output terminal of the main breaker 23 and the main connection terminal 37 are connected by a main crossover electric wire 38.

Further, positioning ribs 43 for the branch breakers 29 and screw holes 44 are formed on the upper and lower sides of the central portion of the mounting plate 28, and the branch breakers 29 are formed.
Is positioned by the positioning rib 43 and is mounted by tightening the mounting screw 29b in the screw hole 44. The branch breaker 29 mounted on the mounting plate 28 has an input terminal on the main bar 36 side and a load terminal on the opposite side, and the handle 29a can be operated in the vertical direction. Then, the input terminal of the branch breaker 29 and the main bar 36 are connected by a connection bar, the load wire 45 is connected to the load terminal, and the load wire 45 passes through the wiring space 40 between the mounting plate 28 and the bottom plate 1a to the wiring lid 8. It is drawn out from the knockout hole 10.

An energization display unit 31 for displaying the energization state of each branch breaker 29 is installed on a column 35a provided on the insulating plate 35 above the main bar 29, and a load on the output terminal side of the branch breaker 29 is provided. A current detecting current transformer 46 passing through the wire 45 is arranged corresponding to each branch breaker 29, and is attached to a CT attachment plate 47. This C
The T mounting plate 47 has a hole 4 through which the breaker mounting screw 29b is inserted.
8 and has a sandwiched structure between the mounting plate 28 and the branch breaker 29 when the branch breaker 29 is mounted. The current flowing through the load line 45 is detected by the current transformer 46 and output to the energization display unit 31, and the energization display unit 31 uses the light emitting diode as the display unit 31 as an example.
a is lit and displayed according to the operating state of the branch breaker 29. Further, the energization display unit 31 has a main bar 36.
In addition to covering the input terminals of the branch breakers 29 on both sides of the main bar 36, a peep hole 51 of the input terminal is formed.

The branch unit 3 has two units having the same structure and is mounted on the frame 11 in the vertical direction. Inner lid 4
Is attached to the inner lid fixing base 52. Inner lid fixing base 52
Are attached to the screw holes 54 of the frame 11 by screws 53 at the upper end of the frame 11, between the main unit 2 and the branch unit 3, and at the lower end of the frame 11, respectively. In the inner lid fixing base 52, the strip plate is bent into a substantially U shape, and both ends are bent outward to form a screw insertion hole 55. Further, a mounting hole 56 is formed in the center of the inner lid fixing base 52.
And the mounting upright 57 is formed.

The inner lid 4 closes the opening of the lower box 1 and is made of a synthetic resin. As shown in FIG. 11, a mounting member 58 is provided corresponding to the inner lid fixing base 52. This attachment 58
Is a horizontal shaft 59 attached to the inner lid 4, an operation lever 60 rotatably attached to the horizontal shaft 59, and an operation lever 6
A hook-shaped retaining piece 61 attached to the back surface side of 0,
And a locking hole 62 that engages with the mounting stand piece 57. Figure 11
As shown by the imaginary line, the locking hole 60 is fitted to the mounting stand piece 57 with the operation lever 60 opened, and by closing the operation lever 60, the retaining piece 61 enters the attaching hole 56 and retains. The hook portion 61a at the tip of the piece 61 is locked to the back surface side of the hole edge portion of the mounting hole 56 to prevent it from being pulled out, whereby the mounting state is achieved. Reference numeral 60a is a locking hook that holds the operating lever 60 in a closed state, and is a locking hole 60a 'formed in the inner lid 4.
Elastically engages and disengages with. Reference numeral 60b is a stopper that regulates the closed position of the operation lever 60.

The inner lid 4 includes a main breaker 23, a limiter mounting plate 19, a handle 29a of the branch breaker 29 of the branch unit 3, and a display portion 31a of the energization display unit 31.
A window hole 62 is formed corresponding to each handle 23
a, 29a, the energization display unit 31, and the limiter are exposed. Further, a synthetic resin door 63 for opening and closing the window hole 62 of the inner lid 4 is provided on the inner lid 4, and the door 4 is attached to the upper and lower end portions and the intermediate portion by hinges 64 so as to be openable and closable. The hinge 64 prevents the warp of the synthetic resin door 63. In the vicinity of the hinge 64 at the lower end, as shown in FIG. 10, a holding means 65 for urging the door 63 toward the closed state and the open state is provided. The holding means 65 is composed of a protrusion 66 provided on the door 63 and a spring 69 having a protrusion 68 mounted on the inner lid 4 by a screw 67 and riding over at an intermediate position in the rotation range of the protrusion 66. Therefore, in the door 63, the protrusion 66 has the protrusion 6 of the spring 69.
When the vehicle gets over 8, the door 63 is urged in the closing or opening direction to maintain the closed or opened state. In addition,
The door 63 also has a semitransparent viewing window 63a through which the display portion 31a of the energization display unit 31 can be seen. Three
2a is a door locking receiver provided on the inner lid 4, 32b is a door 6
3 is a door locking device provided in 3.

According to this embodiment, since the horizontal main bar 36 is arranged below the main breaker 23 and the branch breakers 29 are arranged in line along the main bar 36, the handle 29a can be operated in the vertical direction. Branch breaker 29 possible
Since it can be installed, usability can be improved. Moreover, since the main bar 36 is arranged horizontally below the main breaker 36, the width dimension in the horizontal direction can be shortened, and the studs are cut between the main pillars and the studs and between the studs in the wall. It becomes possible to store the distribution board without any need.

Since the wiring space 40 is formed between the main breaker 23 and the branch breaker 29 and the bottom plate 1a of the lower box 1, the wiring space for each branch breaker 29 is secured without increasing the horizontal width dimension. be able to.

[0022]

According to the distribution board for burying a wall surface of claim 1,
A horizontal main bar is placed below the main breaker,
Since branch breakers were lined up along this main bar,
Since the branch breaker can be installed so that the handle can be operated in the vertical direction, the usability can be improved. Moreover, since the main bar is arranged horizontally below the main breaker, the width in the horizontal direction can be shortened, without cutting the studs between the main pillars and the studs and between the studs in the wall. There is an effect that the distribution board can be stored.

According to the distribution board for burying a wall surface of claim 2, in claim 1, a wiring space is formed between the main breaker and the branch breaker group and the bottom plate of the lower box. In addition to the effect, the wiring space for each branch breaker can be secured without increasing the horizontal width dimension.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention with an inner lid removed.

FIG. 2 is a perspective view of the lower box with the inner unit removed.

FIG. 3 is a front view showing a state in which an inner lid is removed.

FIG. 4 is a partially cutaway sectional view thereof.

FIG. 5 is a cross-sectional view.

FIG. 6 is an exploded perspective view of an inner unit.

FIG. 7 is a partial perspective view showing a state of being embedded in a wall surface.

FIG. 8 is an exploded perspective view of a branch unit.

FIG. 9 is a perspective view of a branch unit.

FIG. 10 is a partial cross-sectional view showing holding means for opening and closing a door.

FIG. 11 is a cross-sectional view of a fixture for the inner lid.

FIG. 12 is a perspective view showing a state in which a door is opened.

FIG. 13 is a perspective view with the door closed.

FIG. 14 is a front view of a conventional example.

FIG. 15 is a schematic front view of another conventional example.

[Explanation of symbols]

 1 Lower Box 2 Main Unit 3 Branch Unit 4 Inner Lid 5 Wall 23 Main Breaker 23a Handle 29 Branch Breaker 29a Handle 36 Main Bar 40 Wiring Space

Claims (2)

[Claims] 1. A lower box embedded in a wall surface, a main breaker mounted in the lower box, and a horizontal break below the main breaker of the lower box and connected to the main breaker. A distribution board for burying a wall surface, which includes a main bar and a group of branch breakers arranged in a row so that the handle can be operated in the vertical direction along the main bar. 2. The distribution board for wall surface burying according to claim 1, wherein a wiring space is formed between the main breaker and the branch breaker group and the bottom plate of the lower box.