JP3279431B2 - Distribution board for wall burial - 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 for burying a wall.

[0002]

2. Description of the Related Art A conventional distribution board for burying a wall in a house is shown in FIG.
It is shown in FIG. In other words, the main board breaker 71 is arranged on the left side of the figure so that the handle 70 can be operated in the vertical direction, and the handle 73 is operated on the right side of the main breaker 71 in the vertical direction. Multiple branch breakers 72 along the horizontal main bar 74 to allow for
Is arranged.

[0003]

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

On the other hand, in a light distribution board used for a building, a factory, a store, or the like, a main bar 76 is vertically disposed below a main breaker 71 as shown in FIG. Although the horizontal width can be shortened by providing the 72, the operation of the handle 73 of the branch breaker 72 is in the horizontal direction.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wall-mounted power distribution board which can be reduced in width and is easy to use.

[0006]

According to a first aspect of the present invention, there is provided a power distribution board for burying a wall, the lower box being buried in a wall having a cutout opening for a wire in a side plate, and being mounted in the lower box. A main breaker, a main bar disposed horizontally below the main breaker of the lower box and connected to the main breaker;
A branch breakers group handle is arrayed so as to be operated in the vertical direction along the main bar, the Hiraku Kikkake
For a wire provided in the mouth and slidably engageable with its edge
Wiring lid and attached to the lower box to prevent the wiring lid from coming off
A main lid and the branch breaker.
A wiring space is formed between a group of lasers and a bottom plate of the lower box .

[0007]

[0008]

According to the power distribution board for burying a wall in the first aspect, a horizontal main bar is disposed below the main breaker, and the branch breakers are arranged along the main bar. Since the branch breaker can be installed so as to be operable, 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 reduced,
The distribution board can be stored between the main pole and the studs in the wall and between the studs without cutting the studs. In addition, the chief
Breaker and the branch breaker group and the bottom plate of the lower box.
Since the wiring space was formed between them, the horizontal width was increased.
Wiring space for each branch breaker without breaking
Can be secured.

[0009]

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. That is, the wall-mounted power distribution board includes the lower box 1, the main unit 2, the branching unit 3, and the inner lid 4. As shown in FIG. 7, the lower box 1 is buried in the recess 6 of the wall surface 5 and is attached to a pillar of the wall, and has a cutout opening 7 for a wire in the upper plate. The notch opening 7 is closed by a wiring lid 8 made of synthetic resin having engagement pieces 9 at both ends which can be slidably engaged with the edge portion 7a with the inner lid 4 removed. The knockout hole 10 is formed, and the knockout hole 1
It is possible to break 0. In addition, lower box 1
A screw hole 20 for mounting an internal unit is formed at each of the upper and lower sides of the opening edge of the upper plate, that is, at the front ends of the upper plate and the lower plate.
7 is temporarily tightened. Reference numeral 21 (shown in FIG. 2 and the like) denotes a ground terminal using a screw provided on the bottom plate as an example.

The main unit 2 and the branching unit 3 constituting the inner unit 70 are composed of a pair of frames 1 extending vertically.
1 and attached to the lower box 1. These frames 1
Reference numeral 1 denotes a band-shaped plate having a U-shaped cross section, a stepped portion 12 for forming a wiring port at an upper position, and a projecting portion 13 projecting forward at an upper end and a lower end. Each of the mounting pieces 14 extends outward in the longitudinal direction from the distal end of the portion 13, and the mounting piece 14 has a barrel-shaped mounting hole 15. In a state in which the main unit 2 and the like are mounted, the lower large-diameter side of the barrel-shaped mounting hole 15 is inserted into the head of the mounting screw 17 of the lower box 1 as shown in FIG. Attachment is achieved by passing the neck 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 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 1 a of the lower box 1 and the frame 11.

The main unit 2 comprises 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 operating direction of the handle 2a is the vertical direction, and an input terminal connected to a power source is located at an upper end side, and an output terminal connected to a load is located at a lower end side. Then, a screw 24 is passed through holes 22a on both sides of the receiving plate 22 and screwed into a screw hole 41 formed on the upper side of the stepped portion 12 of the frame 11 so as to bridge and attach the input terminal to the knockout hole 10. Power line 25
(FIG. 7) is connected. When a limiter (not shown) is mounted on the limiter mounting plate 19, the input power supply line 25 is connected to the limiter, and the input terminal of the main breaker 2 is connected to the load side of the limiter.

The branch unit 3 includes a pair of mounting frames 27 that are bridged below the stepped portion 12 of the frame 11.
And a 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 of a strip having a U-shaped cross section, and the vicinity of both ends thereof is bent in a substantially Z-shape to form a wiring port on the back side in which an intermediate portion floats from the bottom body 1a of the lower box 1, and both ends are further formed. A round hole 30 is formed, and the large diameter side of the round hole 30 is loosely fitted to the head of the screw 33 temporarily tightened in the screw hole 42 formed in the frame 11, and the small diameter side is slid to the neck for locking. By doing so, it is attached to the frame 11. A positioning recess 34 is provided at a predetermined position in an intermediate portion of the mounting frame 27,
A threaded hole is formed in the positioning recess 34, and a positioning projection 28 a positioned in the positioning recess 34 in the mounting plate 28.
The mounting plate 28 is mounted on the mounting frame 27 through the holes of the positioning projections 28a and attached to the screw holes by screws (not shown).

The portion of the mounting plate 28 located between the mounting frames 27 at the center in the vertical direction is recessed toward the bottom plate 1a, and the three main bars are horizontally interposed at the center via an insulating plate 35. The branch breakers 29 are horizontally arranged along the main bar 36 on the upper and lower sides of the central portion, respectively. Of the three main bars 36, the two main bars are disposed on the insulating plate 35 in parallel with each other, and the central bar is supported by a support base 35a formed on the insulating plate 35 and is located at a position higher than both sides. Have been. Each of the main bars 36 has a main connection terminal 37 having a screw as an embodiment at an end, and an output terminal of the main breaker 23 and the main connection terminal 37 are connected by a main crossover wire 38.

On the upper and lower sides of the center of the mounting plate 28, positioning ribs 43 of the branch breaker 29 are formed, and screw holes 44 are formed.
Are mounted on the positioning rib 43 by tightening the mounting screw 29b into the screw hole 44. The positions of the branch breakers 29 mounted on the mounting plate 28 have input terminals on the main bar 36 side and load terminals on the opposite side, and the handle 29a can be operated in the vertical direction. The input terminal of the branch breaker 29 and the main bar 36 are connected by a connection bar, the load terminal 45 is connected to the load line 45, and the load line 45 passes through the wiring space 40 between the mounting plate 28 and the bottom plate 1a. It is drawn out from the knockout hole 10.

An energization display unit 31 for indicating the energization state of each branch breaker 29 is installed on a support 35 a provided on an insulating plate 35 above the main bar 36 , and a load on the output terminal side of the branch breaker 29 is provided. Current transformers 46 for current detection penetrating the wire 45 are arranged corresponding to the respective branch breakers 29 and attached to the CT mounting plate 47. This C
The T mounting plate 47 has a hole 4 through which the breaker mounting screw 29b is inserted.
8 and is sandwiched 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. The energization display unit 31 is a display unit 31 having a light emitting diode as an example.
A light is displayed in accordance with the operation state of the branch breaker 29. The power supply display unit 31 includes a main bar 36.
And straddles the input terminals of the branch breakers 29 on both sides of the main bar 36, and forms a viewing hole 51 for the input terminals.

This branch unit 3 has two of the same configuration, and is attached to the frame 11 vertically. Inner lid 4
Are 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 branching unit 3, and at the lower end of the frame 11, respectively. Each of the inner lid fixing bases 52 is formed by bending a band plate into a substantially U-shape and bending both ends outward to form a screw insertion hole 55. A mounting hole 56 is provided at the center of the inner lid fixing base 52.
And a mounting piece 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. This fixture 58
Denotes 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
0, a hook-shaped retaining piece 61 attached to the back side,
It has a locking hole 62 that engages with the mounting piece 57. FIG.
As shown in the imaginary line, the locking hole 60 is fitted to the mounting upright 57 while the operating lever 60 is opened, and the locking lever 61 is closed to allow the retaining piece 61 to enter the mounting hole 56 to prevent the locking. The key portion 61a at the tip of the piece 61 is locked on the back surface side of the hole edge of the mounting hole 56 to be in a retaining state, whereby the mounting state is established. Reference numeral 60a denotes a locking hook for holding the operation lever 60 in a closed state, and a locking hole 60a 'formed in the inner lid 4.
It is elastically locked to be detachable. Reference numeral 60b denotes a stopper that regulates the closing position of the operation lever 60.

The inner lid 4 includes a main breaker 23, a limiter mounting plate 19, a handle 29a of a branch breaker 29 of the branch unit 3, and a display section 31a of a power supply display unit 31.
Window holes 62 are formed corresponding to each handle 23.
a, 29a, the power supply display unit 31, and the limiter are exposed. A door 63 made of synthetic resin 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 ends and an intermediate part by hinges 64 so as to be openable and closable. The hinge 64 prevents the door 63 made of synthetic resin from warping. As shown in FIG. 10, a holding means 65 for urging the door 63 in the closed state and the open state is provided near the hinge 64 at the lower end. The holding means 65 includes a projection 66 provided on the door 63 and a spring 69 having a projection 68 attached to the inner lid 4 with a screw 67 and riding over the projection 66 at an intermediate position in the rotation range. Therefore, the door 63 has the protrusion 66 formed by the protrusion 6 of the spring 69.
When the vehicle gets over 8, the door 63 is urged in the direction of closing or opening, and the closed state or the open state is maintained. In addition,
The door 63 also has a translucent viewing window 63a through which the display unit 31a of the power display unit 31 can be seen. 3
2a is a door locking receiver provided on the inner lid 4, and 32b is a door 6
3 is a door lock provided on the door 3.

According to this embodiment, the horizontal main bar 36 is disposed below the main breaker 23, and the branch breakers 29 are arranged along the main bar 36, so that the handle 29a can be operated in the vertical direction. Possible branch breaker 29
Can be installed, so that usability can be improved. Moreover, since the main bar 36 is disposed horizontally below the main breaker 36, the width in the horizontal direction can be reduced, and the studs are cut between the main pillars and the studs in the wall and between the studs. The distribution board can be stored without the 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, a wiring space for each branch breaker 29 is secured without increasing the horizontal width. be able to.

[0022]

According to the distribution board for burying a wall according to the first aspect,
A horizontal main bar is arranged below the main breaker,
Since the branch breakers are lined up along this main bar,
Since the branch breaker can be installed so that the handle can be operated in the vertical direction, usability can be improved. In addition, because the main bar is arranged horizontally below the main breaker, the width in the horizontal direction can be reduced, without cutting the studs between the main pillar and the studs in the wall and between the studs. There is an effect that the distribution board can be stored. In addition, the main breaker and the branch breaker
A wiring space was formed between the group of mosquitoes and the bottom plate of the lower box.
Each branch block without increasing the horizontal width.
Wiring space for the radar can be secured.

[0023]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which an inner cover of an embodiment of the present invention is removed.

FIG. 2 is a perspective view showing a state where an inner unit of a lower box is removed.

FIG. 3 is a front view of 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 the inner unit.

FIG. 7 is a partial perspective view of a state in which it is 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 a holding means in an open / closed state of a door.

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

FIG. 12 is a perspective view showing a state where a door is opened.

FIG. 13 is a perspective view showing a state in which a door is 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]

 DESCRIPTION OF SYMBOLS 1 Lower box 2 Main unit 3 Branch unit 4 Inner lid 5 Wall surface 23 Main breaker 23a Handle 29 Branch breaker 29a Handle 36 Main bar 40 Wiring space

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-229605 (JP, A) JP-A-60-133599 (JP, U) JP-A-59-189405 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) H02B 1/40-1/42

Claims (1)

(57) [Claims] 1. A lower box buried in a wall having a cutout opening for a wire in a side plate, a main breaker mounted in the lower box, and a lower portion of the lower breaker of the lower box in a horizontal direction. A main bar connected to the main breaker, and a group of branch breakers arranged so that a handle can be operated in a vertical direction along the main bar;
A wire provided in the opening and slidably engageable with its edge
Wiring cover, and the wiring cover attached to the lower box
An inner lid for stopping, the main breaker and the
Wiring space is formed between the group of breakers and the bottom plate of the lower box
The wall buried distribution board.