JP2991875B2 - 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 such as a house distribution board.

[0002]

2. Description of the Related Art Conventional examples (for example, Japanese Utility Model Application Laid-Open No. 58-145007)
Is shown in FIG. That is, in this distribution board, a current transformer 101 is installed on the load terminal side of the branch breaker 100 to perform current detection. In this case, the current transformer 101 is fitted and mounted on a holding piece 103 erected on the breaker mounting plate 102, and its output line 104 is wired so as to cross over the current transformer 101. 105 is a load wire.

[0003]

However, in this distribution board, the output line 104 of the current transformer 101 is connected to the branch breaker 100.
Is freely placed above the load electric wire 105, which hinders the wiring of the load electric wire 105, and there is a problem that work such as bundling is required. Further, since the holding piece 103 is erected on the breaker mounting plate 102, the holding piece 103 is connected to the load wire 10 when the current transformer 101 is not installed.
It gets in the way when wiring # 5. Although the holding piece 103 can be formed separately from the breaker mounting plate 102, a separate means for mounting it separately is required.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a distribution board in which an output line of a current transformer does not interfere with wiring of a load wire and does not need to perform a work such as a bundle.

[0005]

According to a first aspect of the present invention, there is provided a distribution board including a lower box having a breaker mounting plate, and a load terminal arranged in line along one side edge of the breaker mounting plate to connect the load terminal to the one side edge. A plurality of branch breakers directed outward of the portion, and a current transformer mounting plate extending outward from the one side edge of the breaker mounting plate,
A plurality of current transformers mounted on the current transformer mounting plate corresponding to the branch breakers and having a load wire of the branch breaker as a primary line, and an output line of the current transformer mounted on the current transformer. It is characterized by being wired along a plate.

According to a second aspect of the present invention, there is provided a switchboard according to the first aspect.
The current transformer mounting plate has a wiring and mounting groove having a U-shaped cross section extending in the row direction of the branch breaker, and the current transformer is mounted in the wiring and mounting groove, and an output of the current transformer is provided. A wire is wired in the wiring and mounting groove. According to a third aspect of the present invention, there is provided the distribution board according to the first or second aspect, wherein the current transformer has a pair of inward hooking hooks vertically suspended from a mounting surface thereof, and the current transformer mounting plate is provided with the hook. A spacer member having a hook hole for hooking a claw, and further having a locking claw provided between the plurality of current transformers and locking the hook hole with the hook claw.

According to a fourth aspect of the present invention, in the power distribution panel according to any one of the first to third aspects, the breaker mounting plate has a branch breaker mounting screw hole, and the current transformer mounting plate overlaps with the breaker mounting plate. Having a fixing hole aligned with the branch breaker mounting screw hole in the mounting portion, the branch breaker having a mounting hole overlapped with the mounting portion and aligned with the fixing hole, the mounting hole and the mounting hole It has a mounting screw which is screwed into the branch breaker mounting screw hole through a fixing hole to fix the branch breaker and the mounting portion.

[0008]

According to the distribution board of the first aspect, the current transformer mounting plate is extended from the breaker mounting plate on the load terminal side of the branch breaker,
The current transformer was mounted on the current transformer mounting plate, and the output line of the current transformer was wired along the current transformer mounting plate. It does not hinder the wiring of the electric wires, and the work of bundling and the like can be omitted.

According to a second aspect of the present invention, in the first aspect, the current transformer mounting plate has a wiring and mounting groove having a U-shaped cross section extending in a row direction of the branch breakers, and The current transformer is mounted in the wiring and mounting groove, and the output line of the current transformer is wired in the wiring and mounting groove. Since the output line of the current transformer can be stored in the mounting groove, the wiring of the output line is easy, and since the wiring and mounting groove is formed by bending into a U-shape, there is little bending, so the position of the current transformer can be reduced. Can be stable.

According to a third aspect of the present invention, in the first or second aspect, the current transformer has a pair of inward hooks vertically extending from a mounting surface of the current transformer. Since the mounting plate has a hooking hole for hooking the hooking claw, and further has a spacer member provided between the plurality of current transformers and a locking claw provided in the hooking hole for locking together with the hooking claw,
In addition to the function of claim 1 or claim 2, since the engaging claw of the spacer member is engaged with the engaging hole to press the engaging claw of the current transformer, it is possible to reduce the escape of the engaging piece from the engaging claw. Can be.

According to a fourth aspect of the present invention, in the first to third aspects, the breaker mounting plate has a branch breaker mounting screw hole, and the current transformer mounting plate overlaps the breaker mounting plate. A fixing hole having a mounting portion, the fixing hole being aligned with the branch breaker mounting screw hole, the branch breaker having a mounting hole overlapped with the mounting portion and aligned with the fixing hole; And a mounting screw that is screwed into the branch breaker mounting screw hole through the fixing hole to fix the branch breaker and the mounting portion, so that a current transformer is unnecessary in addition to the operation of claim 1 to claim 3. It can be easily dealt with by removing the current transformer mounting plate, and no unnecessary objects remain. Further, since the mounting portion of the current transformer mounting plate is overlapped below the branch breaker and fixed by the mounting screw of the branch breaker, another component for mounting the current transformer mounting plate is not required.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. That is, the distribution board includes a lower box 1, a plurality of branch breakers 2, a current transformer mounting plate 3, and a plurality of current transformers 4.
And The lower box 1 has a breaker mounting plate 5. The lower box 1 of the embodiment is buried in a recess 8 of a wall 7 as shown in FIG. A wiring cover 10 is attached to the cutout 9 of the upper plate of the lower box 1, and a wiring hole 11 is knocked out in the wiring cover 10,
An electric conduit 12 is inserted into the through hole 11 and connected with a nut 13. 14 is a load wire.

As shown in FIG. 4, the lower box 1 has
5 is attached by a screw 16. This midsole 15
A pair of mounting portions 17 mounted on both sides of the lower box 1,
It consists of a pair of band-shaped receiving plates 19 which are mounted on the pair of mounting portions 17 at both ends by screws 18. A pair of receiving plates 1
9, a main breaker 20 is installed by screws (not shown), and the breaker mounting plate 5 is screwed into a screw hole 21 of the receiving plate 19.
The mounting screw 23 is aligned with the tightening hole 22 aligned with FIG.
(FIGS. 1 and 8). Breaker mounting plate 5
Fix a bar fixing base 24 at the center by a locking piece (not shown), and a neutral bar 25 and a pair of voltage bars 26
Is fixed. The neutral bar 25 and the pair of voltage bars 26 are connected to the output terminal of the main breaker 20 by a plurality of connecting members 27 at the ends. 61 is a branch breaker connection of the neutral bar 25, and 62 is a branch breaker connection of the voltage bar 26. As shown in FIG. 6, branch breaker mounting screw holes 6 are formed on both sides of the breaker mounting plate 5 separated by the bar fixing base 24, breaker positioning protrusions 28 are formed, and positioning pieces 29 are formed at both ends in the row direction. Is bent.

The plurality of branch breakers 2 include a breaker mounting plate 5
The load terminals 57 are arranged in a line along one side edge and face outward from the one side edge. At the end, the branch breaker 2 has a mounting hole 30 (FIG. 8) aligned with the branch breaker mounting screw hole 6, and is positioned by the positioning projection 28 and the positioning piece 29 when the branch breaker 2 is mounted on the breaker mounting plate 5. Then, the mounting hole 30 is aligned with the branch breaker mounting screw hole 6, and is fixed by the mounting screw 31. In the branch breaker 2 (FIG. 8), 33 is a table, 34 is a cover, 32
Is the connecting pin. In this manner, the branch breakers 2 mounted on the breaker mounting plate 5 are arranged in two rows with the input terminals 58 directed to both sides of the bar fixing base 24 and the load terminals 57 positioned on the opposite side of the bar fixing base 24. . Then, the branch breaker 2 is insulated so that the upper part of the neutral bar 25 is insulated.
The energization display block 35 is disposed between the columns
This is fixed to the bar fixing base 24 by a hook 36 (FIG. 6) or the like. As shown in FIG. 1, the energization display block 35 includes a printed circuit board 37 and light emitting diodes 38 of the number of branch breakers connected to the printed circuit board 37, and the light emitting diodes 38 are exposed at the top of the energization display block 35. When a current of, for example, about 10 mA flows through the light emitting diode 38 due to the output current of the current transformer 4, the light emitting diode 3
8 lights up and you can see the status of use at a glance when you go out, and you can check it.

The current transformer mounting plate 3 extends outside one side edge of the breaker mounting plate 5, and as shown in detail in FIG. Output line 45 of the container 4
Are formed in a wiring space 46 for wiring the wiring. The current transformer mounting plate 3 of the embodiment has a wiring and mounting groove 47 having a U-shaped cross section extending in the column direction of the plurality of branch breakers 2, and a wiring space 46 is formed in the wiring and mounting groove 47. In addition, the mounting portion 48 has a mounting portion 48 overlapping the breaker mounting plate 5 and a fixing hole 49 that matches the branch breaker mounting screw hole 6. That is, the current transformer mounting plate 3 is formed by bending the wiring / mounting groove 47 into a U-shaped cross section, and the mounting portions 48 having the number of branch breakers are extended outward from the side portions thereof.
A gap into which the positioning projection 28 enters is formed. Further, a fixing hole 49 is formed in the mounting portion 48, and a catching hole 50 is formed in the bottom of the wiring and mounting groove 47 at equal intervals along the longitudinal direction. The mounting portion 48 of the current transformer mounting plate 3 is overlapped on the edge of the breaker mounting plate 5, the outer surface of the wiring and mounting groove 47 is brought into contact with the side edge of the breaker mounting plate 5, and the mounting portions 48 at both ends are positioned as positioning pieces. When the positioning protrusion 28 is inserted between the mounting portions 48 by engaging with the fixing holes 29, the fixing holes 49 are aligned with the branch breaker mounting screw holes 6. Further, the branch breaker 2 is attached to the mounting portion 4.
When it is positioned on the positioning projection 28 and the positioning piece 29, the mounting hole 30 and the fixing hole 49 are aligned, and the branch breaker 2 and the current transformer mounting plate 3 are simultaneously mounted on the breaker mounting plate 5 by the mounting screws 31.

The plurality of current transformers 4 are mounted on the current transformer mounting plate 3 corresponding to the branch breakers 2, and use the load wires 14 of the branch breakers 2 as primary lines. In the embodiment, the load wire 14 is used.
And the output line 45 is drawn out. Further, the current transformer 4 is housed in a case 53 to be inserted through a side opening, and an inward hooking claw 64 in a facing direction protrudes from a mounting surface at a lower end portion of the case 53. A notch 54 for a wiring space is formed on the side of the branch breaker 2 with respect to the hooking claw 64, and a projection 55 for preventing a fall is provided on the opposite side of the branch breaker 2 to form an inner surface of the wiring and mounting groove 47. I am trying to hit. The output line 45 of the current transformer 4 is accommodated along the wiring / mounting groove 47, and is bundled from the end opposite to the main breaker in the column direction and connected to the energization display block 35 as shown in FIG.

A spacer member 56 is provided between the plurality of current transformers 4.
Is interposed. This spacer member 56 has a substantially inverted U-shape, but is formed low so as to be located below the load electric wire 14, and the locking claws 66 at the ends of both legs protrude in the width direction of the wiring / mounting groove 47. The stop claws 66 are locked in the same catch holes 50 as the respective catch claws 64. As shown in FIG. 3, the mounting portion 1 of the midsole base 15 is attached to the opening of the lower box 1 by a mounting tool 40.
An inner lid 41 is attached to 7 to cover the opening. The inner cover 41 has a hole 67 for exposing the branch breaker 2, the main breaker 20, and the power supply display block 35. Then, the door 68 for opening and closing the hole 67 is attached to the inner lid 41.
Is provided. 69 is a viewing window.

According to this embodiment, the current transformer mounting plate 3 is extended from the breaker mounting plate 5 on the load terminal 57 side of the branch breaker 2, and the current transformer 4 is mounted on the current transformer mounting plate 3. Since the output line 45 of the current transformer 4 is wired along the current transformer mounting plate 3, the output line 45 of the current transformer 4 does not intersect the upper side of the load wire 14, so that the output line 45 hinders the wiring of the load wire 14. And the operation of bundling and the like can be omitted.

The current transformer mounting plate 3 has a wiring and mounting groove 47 having a U-shaped cross section extending in the row direction of the branch breakers 2, and the current transformer 4 is mounted in the wiring and mounting groove 47, and Since the output line of the current transformer 4 is wired in the wiring / mounting groove 47, the output line 45 of the current transformer 4 can be stored in the wiring / mounting groove 47 of the current transformer mounting plate 3. Wiring is easy, and since the wiring and mounting groove 47 is formed by bending in a U-shape, the bending is small, so that the position of the current transformer 4 can be stabilized.

Further, the current transformer 4 has a pair of inward hooking claws 64 suspended from the mounting surface thereof, and the current transformer mounting plate 3 has a hooking hole 50 for hooking the hooking claws 64, and a plurality of hooks. Since the spacer member 56 is provided between the current transformer 4 and the locking claw 66 that locks with the locking claw 64 in the locking hole 50, the locking claw 66 of the spacer member 56 is locked in the locking hole 50. By doing so, the hooks 64 of the current transformer 4 are pressed, so that the hooks 64 can be prevented from coming out of the hook holes 50.

The breaker mounting plate 5 has a branch breaker mounting screw hole 6, and the current transformer mounting plate 3 has a mounting portion 48 overlapping the breaker mounting plate 5 and a fixing hole 49 matching the branch breaker mounting screw hole 6. The branch breaker 2 has a mounting hole 30 that is overlapped with the mounting portion 48 and matches the fixing hole 49, and is screwed into the branch breaker mounting screw hole 6 through the mounting hole 30 and the fixing hole 49. Since the mounting screws 31 for fixing the branch breaker 2 and the mounting portion 48 of the current transformer mounting plate 3 are provided, when the current transformer 4 is unnecessary, the current transformer mounting plate 3 can be easily removed by removing the current transformer mounting plate 3 and is unnecessary. Nothing remains. Further, the mounting portion 48 of the current transformer mounting plate 3 is placed under the branch breaker 2 so that the mounting screws 31 of the branch breaker 2 are removed.
Therefore, another component for mounting the current transformer mounting plate 3 is not required.

Further, the current transformer 4 can be mounted at the position of the spacer member 56 by making the mounting holes 50 of the current transformer mounting plate 3 at equal intervals, and the current transformers are mounted on both sides when EL detection is performed. You can also. Although the current transformer mounting plate 3 is detachable, it may be formed integrally with the breaker mounting plate 5. Although the hook holes 50 are formed at equal intervals, they may be formed at unequal intervals so that the interval between the pair of hook claws 64 and the interval between the pair of current transformers 4 are different.

[0023]

According to the first aspect of the present invention, the current transformer mounting plate is extended from the breaker mounting plate to the load terminal side of the branch breaker, and the current transformer is mounted on the current transformer mounting plate. Since the output line of the current transformer is wired along the current transformer mounting plate, the output line of the current transformer does not cross the upper side of the load wire, so the output line does not interfere with the wiring of the load wire. There is an effect that the operation of can be omitted.

According to a second aspect of the present invention, in the first aspect, the current transformer mounting plate has a wiring and mounting groove having a U-shaped cross section extending in a row direction of the branch breakers, and The current transformer is mounted in the wiring / mounting groove, and the output line of the current transformer is wired in the wiring / mounting groove. Since the output line of the current transformer can be stored in the mounting groove, the wiring of the output line is easy, and since the wiring and mounting groove is formed by bending into a U-shape, there is little bending, so the position of the current transformer can be reduced. Can be stable.

According to a third aspect of the present invention, in the first or second aspect, the current transformer has a pair of inward hooking hooks vertically attached to a mounting surface of the current transformer. Since the mounting plate has a hooking hole for hooking the hooking claw, and further has a spacer member provided between the plurality of current transformers and a locking claw provided in the hooking hole for locking together with the hooking claw,
In addition to the effect of claim 1 or claim 2, since the locking claw of the spacer member is locked in the locking hole to press the locking claw of the current transformer, it is possible to reduce the slippage of the hooking piece from the hooking claw. Can be.

According to a fourth aspect of the present invention, in the first to third aspects, the breaker mounting plate has a branch breaker mounting screw hole, and the current transformer mounting plate overlaps the breaker mounting plate. A fixing hole having a mounting portion, the fixing hole being aligned with the branch breaker mounting screw hole, the branch breaker having a mounting hole overlapped with the mounting portion and aligned with the fixing hole; And a mounting screw that is screwed into the branch breaker mounting screw hole through the fixing hole to fix the branch breaker and the mounting portion, in addition to the effects of claims 1 to 3, when a current transformer is unnecessary. It can be easily dealt with by removing the current transformer mounting plate, and no unnecessary objects remain. Further, since the mounting portion of the current transformer mounting plate is overlapped below the branch breaker and fixed by the mounting screw of the branch breaker, another component for mounting the current transformer mounting plate is not required.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is an external perspective view of a distribution board.

FIG. 3 is an external perspective view in a state where a door is opened.

FIG. 4 is a plan view showing a state where an inner lid is removed.

FIG. 5 is a perspective view showing a state in which a branch breaker is mounted.

FIG. 6 is an exploded perspective view thereof.

FIG. 7 is a partial side view as seen from the load side of the branch breaker.

FIG. 8 is a partial sectional view of a branch breaker.

FIG. 9 is an exploded perspective view around a current transformer.

FIG. 10 is a partial perspective view of a conventional example.

[Description of Signs] 1 Lower box 2 Branch breaker 3 Current transformer mounting plate 4 Current transformer 5 Breaker mounting plate 14 Load wire 45 Output wire 57 Load terminal

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02B 1/40-1/42

Claims (4)

(57) [Claims] A lower box having a breaker mounting plate; a plurality of branch breakers arranged in line along one side edge of the breaker mounting plate and having load terminals directed outward from the one side edge; A current transformer mounting plate extending outward from the one side edge of the breaker mounting plate, and a load wire of the branch breaker mounted on the current transformer mounting plate corresponding to the branch breaker;
A distribution board, comprising: a plurality of current transformers serving as secondary lines, wherein output lines of the current transformers are wired along the current transformer mounting plate. 2. The current transformer mounting plate has a wiring and mounting groove having a U-shaped cross section extending in a row direction of the branch breakers, and the current transformer is mounted in the wiring and mounting groove. The distribution board according to claim 1, wherein an output line of the current transformer is wired in the wiring / mounting groove. 3. The current transformer has a pair of inward hooks vertically hanging from its mounting surface, the current transformer mounting plate has a hook hole for hooking the hooks, and The distribution board according to claim 1 or 2, further comprising a spacer member interposed between the current transformers and having a locking claw that is locked in the hooking hole together with the hooking claw. 4. The breaker mounting plate has a branch breaker mounting screw hole, and the current transformer mounting plate has a mounting portion overlapping the breaker mounting plate, and has a fixing hole aligned with the branch breaker mounting screw hole. The branch breaker having an attachment portion, wherein the branch breaker has an attachment hole overlapped with the attachment portion and aligned with the fixing hole, and is screwed into the branch breaker attachment screw hole through the attachment hole and the fixing hole. The distribution board according to claim 1, further comprising a mounting screw for fixing the mounting portion.