JP3222336B2 - 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 As this kind of distribution board, there is one disclosed in Japanese Patent Application Laid-Open No. 6-153336. In this device, an inner unit fixing plate provided with a main breaker and a branch breaker is fixed to both sides in the width direction of the lower box, and the upper lid is fixed to both sides of the inner unit fixing plate. An input / output wire portion for inserting an electric wire conductor is formed on a wiring lid which is attached to a notch opening formed on one side plate of the lower box by sliding from the opening edge side of the lower box.
Then, by inserting the wire cover into the cutout opening of the lower box after inserting the wire conductor into the input / output line portion, the work of connecting the input / output line portion is facilitated.

[0003]

However, according to this distribution board, the upper lid is fixed on both sides in the width direction of the inner unit fixing plate, and the input / output wire portion for inserting the electric wire conductor is provided on one side plate of the lower box. Is formed on the wiring lid that is attached by sliding into the notch opening, so if the wire conductor bends, the wiring lid itself may directly contact the upper lid and the upper lid may be lifted, and the upper lid is in a stable state. There was a problem that it could not be installed with the.

[0004] Therefore, an object of the present invention is to facilitate the operation of energizing the input / output wire portion and to reduce the risk of the upper cover being pushed up even when the wire conductor is bent, so that the upper cover can be mounted in a stable state. It is to provide a distribution board.

[0005]

According to a first aspect of the present invention, there is provided a distribution board including a lower box having an input / output line portion on a side plate, and a main breaker and a branch breaker wired through the input / output line portion. the bottom plate and the inner switch fixed plate disposed in the vicinity of, the distribution board having an upper cover fixed to the internal unit fixing plate, before
A holding frame having a fixing portion attached to the inner unit fixing plate on the input side of the master breaker to suppress the floating of the wiring passing through the input / output line portion and to fix the upper lid is provided. Things.

According to a second aspect of the present invention, there is provided a switchboard according to the first aspect.
One end of the holding frame is hinged, and the other end is screwed.

[0007]

According to the distribution board of the first aspect, the wiring is inserted from the input / output wire portion of one side plate of the lower box, and then the holding frame is attached to the inner unit fixing plate, so that the wiring work is easy and the wiring is easy. Is held between the holding frame and the bottom plate of the lower box or the bottom plate of the inner unit fixing plate, and the upper lid is fixed to the fixing portion of the holding frame on the opening side of the lower box opposite to the wiring, so that the wiring is bent. However, there is little possibility that the upper lid is pushed up due to the restriction of the floating by the holding frame, so that the upper lid can be mounted in a stable state.

According to a second aspect of the present invention, there is provided a switchboard according to the first aspect.
Since one end of the holding frame was hinged and the other end was screwed, the wire conductor was connected to the breaker in a state where the holding frame was rotated around one end and the other end was opened, in addition to the operation of claim 1. Later, the holding frame is fixed by screwing the other end, and the upper lid can be fixed to this holding frame, which facilitates the work of attaching the holding frame.

[0009]

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 is buried in a wall 10 as shown in FIG. 13, is made of metal and is formed in a vertically long shape, and the opening edge supports the inner unit fixing plate 2 and has screw holes 7 and 8. It has a width that can be formed, and its inner end side is folded 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. In addition, an input / output wire portion 9 'is formed on a side plate of the other edge portion opposite to one edge portion of the lower box 1 having the vertical screw hole 8, and
All the other three side plates of the lower box 1 are provided with the input / output line portions 9.

The inner unit fixing plate 2 has a main breaker 19 and a branch breaker 3 wired through the input / output lines 9 and 9 ', and is disposed near the bottom plate of the lower box 1. The inner unit fixing plate 2 of the embodiment includes a main unit 15 and a branching unit 16, and is mounted on the opening edge of the lower box 1 to form mounting holes 12 and 13 which are aligned with the screw holes 7 and 8, respectively. Part 1
4 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 and an electric device mounting hole 17 on its bottom surface, and a branch unit connecting portion 18 at a lower end of the bottom surface. A main breaker 19 is mounted on the main breaker mounting portion 16,
A metal mounting piece 20 is mounted in the electrical equipment mounting hole 17. The mounting piece 20 is formed by bending the side plate 20b up and down and bending the tip of the side plate 20b outwardly to form the engaging piece 20c to be engaged with the edge of the electric device mounting hole 17 and to form the engaging piece 20c. It is attached to a screw hole 20d formed at the edge of the electric device mounting hole 17 by a screw 20a through the hole formed. The mounting piece 20
A wooden mounting plate 21 to which an electric device (not shown) such as a limiter is mounted is mounted on the inner bottom surface of the device. When a limiter or the like is mounted on the mounting plate 21, the input power supply line is connected to the electric device, and the electric wire connection portions 19'a to 19'c on the input side of the main breaker 19 are connected to the load side of the electric device. Is done.

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 branch unit 16 comprises a pair of frames 29, a bar fixing base 30 located between the frames 29, and a lower end side mounting portion 14 '. 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. As shown in FIG. 10, a pair of voltage bars 38 are arranged side by side on the bar fixing base 30 in a vertical position.
A neutral bar 39 is disposed at a position higher than 0 in parallel with 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 has 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. Each of the mounting holes 12 of the mounting portion 14 is a pair of long holes 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 line in the vertical direction on each frame 29 of the internal unit fixing plate 2, and the respective wire connection portions 3a, 3b and the like are 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 projects, 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, an electric wire conductor (not shown) of the wiring is inserted from the input / output line portions 9 and 9 'of one side plate of the lower box 1, and then the holding frame 22 is attached to the inner unit fixing plate 2. So
The wiring work is easy, and the wiring is held between the holding frame 22 and the bottom plate of the lower box 1 or the bottom plate of the internal unit fixing plate 2,
Since the upper lid 4 is fixed to the locking tongue piece 57 and the mounting hole 56 of the fixing portion of the holding frame 22 on the opening side of the lower box 1 on the side opposite to the wiring, even if the wiring is bent, the holding frame 22 can float. There is little possibility that the upper cover 4 is pushed up due to the restriction, so that the upper cover 4 can be mounted in a stable state.

Since one end of the holding frame 22 is hinged and the other end is screwed, the wire conductor is connected to the breaker with the holding frame 22 rotated around one end of the holding frame 22 and the other end opened. Then, the holding frame 22 is fixed by screwing the other end, and the upper cover 4 is fixed to the fixing portion of the holding frame 22.
Can be fixed, and the work of attaching the holding frame 22 is facilitated.

In the present invention, the holding frame 22 may be detachably mounted.

[0020]

According to the distribution board of the first aspect, the wiring is inserted from the input / output part of one side plate of the lower box, and then the holding frame is attached to the inner unit fixing plate, so that the wiring work is easy. ,
Since the wiring is held between the holding frame and the bottom plate of the lower box or the bottom plate of the inner unit fixing plate, and the upper lid is fixed to the fixing part of the holding frame on the opening side of the lower box opposite to the wiring, the wiring is Even if it bends, there is little possibility that the lifting is restricted by the holding frame and the upper lid is pushed up, so that there is an effect that the upper lid can be mounted in a stable state.

According to a second aspect of the present invention, there is provided a distribution board according to the first aspect.
Since one end of the holding frame was hinged and the other end was screwed, in addition to the effect of claim 1, the wire conductor was connected to the breaker with the holding frame rotated around one end and the other end opened. Later, the holding frame is fixed by screwing the other end, and the upper lid can be fixed to this holding frame, which facilitates the work of attaching the holding frame.

[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.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower box 2 Inner unit fixing plate 3 Branch breaker 4 Upper lid 9 I / O line part 19 Main breaker 22 Holding frame 23 Hinge 56 Mounting hole of fixing part 57 Locking tongue piece of fixing part

Claims (2)

(57) [Claims] 1. An inner unit fixing plate mounted with a lower box having an input / output line portion on a side plate, a main breaker and a branch breaker wired through the input / output line portion, and disposed near a bottom plate of the lower box. And an upper lid fixed to the inner unit fixing plate, wherein the floating of the wiring that has been attached to the inner unit fixing plate on the input side of the main breaker and that has passed through the input / output line portion is provided. A distribution board provided with a holding frame having a fixing portion for holding down and fixing the upper lid. 2. The distribution board according to claim 1, wherein one end of the holding frame is hinged, and the other end is screwed.