JP2000295722A - Panelboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a panelboard which facilitates wiring work. SOLUTION: A main breaker 31 for a single-phase 3-wire system including voltage lines and a neutral line is arranged in a panelboard main part 11 so as to be parallel with a plurality of branch breakers 32. Connection parts 45 and 46 are provided on both the sides of each branch breaker 32 in a direction crossing the direction of parallel arrangement. The one side connection parts 45 are connected to the voltage line side of the main breaker 31. A neutral terminal 33 connected to the neutral side of the main breaker 32 and an earth terminal 34 are arranged adjacent to the other side connection parts 46 of the plurality of branch breakers 32. Load side wirings are connected to the other side connection parts 46 of the branch breakers 32, the neutral terminal 33 and the earth terminal 34 which are arranged adjacent to each other.

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 a house or a store.

[0002]

2. Description of the Related Art Conventionally, in the case of a single-phase three-wire system including a pair of voltage wires and a neutral wire, a single-phase three-
A wire-type main breaker, a plurality of branch breakers, a bus bar for a voltage line and a neutral line electrically connecting the main breaker and the branch breaker, a ground terminal, and the like are provided.

The wiring on the load side drawn into the distribution board main body is often composed of a pair of power lines and a ground line, and the power line is connected to a branch breaker.
The ground wire is connected to the ground terminal.

When a 1P type branch breaker is used, a power line on the load side is connected to the branch breaker and a connection point on the neutral line side.

[0005] Further, since a main breaker and a plurality of branch breakers are disposed in the central area of the distribution board main body, the ground terminal is located at the side, upper and lower portions of the distribution board main body avoiding those positions. It is arranged in the corner of. Further, the ground terminal has a configuration in which a plurality of terminal portions having quick connection terminals are arranged side by side, but the pitch between the plurality of terminal portions is narrow in order to reduce the size.

[0006]

In the conventional distribution board, the ground terminal is disposed at a corner such as a side portion or an upper and lower portion of the distribution board main body avoiding the positions of the main breaker and the plurality of branch breakers. This does not take into account the correspondence of the positional relationship with the plurality of branch breakers, and is arranged at a position distant from the plurality of branch breakers.

When a 1P type branch breaker is used, for example, the power line on the load side is connected to the branch breaker and the neutral line side, but the position of the branch breaker and the connection point on the neutral line side is changed. The consideration of the relationship is not taken into consideration, and the branch breaker and the connection point on the neutral line side are arranged at positions apart from each other.

Normally, wiring on the load side is performed by parallel lines. However, in order to connect the branch breaker at a remote position to a ground terminal or a connection point on the neutral line side, the wiring is largely divided and the load is divided. It is necessary to adjust the length of the power supply line and the ground line to the corresponding lengths, and there is a problem that the wiring work becomes complicated.

The ground terminal has a multiple structure in which a plurality of terminal portions having quick connection terminals are arranged side by side. However, since the pitch between the plurality of terminal portions is small in order to make the terminal compact, the ground terminal is grounded. There is a problem that it is difficult to connect the wires and the wiring work becomes complicated.

[0010] The present invention has been made in view of the above points, and an object of the present invention is to provide a distribution board which can facilitate wiring work.

[0011]

According to a first aspect of the present invention, there is provided a distribution board having a main body for a single-phase three-wire system provided in the main body of the distribution board and including a voltage wire and a neutral wire. A plurality of branch breakers arranged side by side in the distribution board main body and intersecting the direction of the juxtaposition, and having one connection part connected to the voltage line side of the main breaker; A neutral terminal disposed adjacent to the other connection of the branch breaker and connected to the neutral side of the main breaker; and disposed adjacent to the other connection of the plurality of branch breakers. And a ground terminal.

Further, by disposing the neutral terminal and the ground terminal adjacent to the terminal portions of the plurality of branch breakers, the terminal portion of the branch breaker, the neutral terminal and the ground terminal are connected to the load side. Can be easily connected without adjusting the length of the wiring.

According to a second aspect of the present invention, there is provided the distribution board according to the first aspect, wherein the neutral terminal and the ground terminal each have a terminal portion having a quick connection terminal at a position corresponding to each branch breaker. Is what it is.

By providing a terminal portion having a quick connection terminal at a position corresponding to each branch breaker of the neutral terminal and the ground terminal, that is, at a position having the same pitch as the juxtaposed pitch of the branch breakers, On the other hand, it becomes easier to connect a power line and a ground line.

According to a third aspect of the present invention, there is provided the power distribution panel according to the second aspect, wherein the neutral terminal and the ground terminal each have a terminal portion independently and a conductor for connecting the terminal portions. It is what you have.

Since each terminal section is independently provided and a conductor for connecting each terminal section is provided, the correspondence between each branch breaker and each terminal section becomes clear.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show one embodiment, FIG. 1 is a front view of the internal structure of a distribution board, FIG. 2 is a circuit diagram of the distribution board, and FIG. 3 is a diagram showing a neutral terminal and a ground terminal. Front view, FIG.
FIG. 3 is a sectional view of a neutral terminal and a ground terminal.

In FIG. 1, reference numeral 11 denotes a power distribution panel main body. The power distribution panel main body 11 is, for example, a base 12 installed in a wall or the like in an embedded state, and is detachably mounted on a front surface of the base 12. With no cover, this switchboard body 11
A distribution board unit 13 is provided therein.

The base 12 is made of, for example, synthetic resin and has a rear plate portion 21 and an edge frame portion 22 protruding forward from the periphery of the rear plate portion 21, and has a shape with an open front surface. Is formed. A plurality of wiring ports 23 through which a power supply line and a wiring on the load side are inserted are formed in the rear plate 21 above and below the position where the distribution board unit 13 is provided.

The distribution board unit 13 includes a main breaker 31, a plurality of branch breakers 32, a plurality of neutral terminals 33, and a plurality of ground terminals 34 for a single-phase three-wire system including a pair of voltage lines and a neutral line. These are mounted on the device mounting plate 35.

The equipment mounting plate 35 is made of, for example, metal and is integrated by combining one or a plurality of members, and includes a main breaker 31, a plurality of branch breakers 32, a plurality of neutral terminals 33, and a plurality of grounds. It has a device mounting plate portion 36 to which the terminals 34 and the like are mounted, and cover mounting portions 37 are provided on both sides of the device mounting plate portion 36.

The main breaker is located on the left side of the equipment mounting plate 36.
A plurality of branch breakers 32 are disposed at the right side of the upper and lower stages of the plurality of branch breakers 32 in the upper and lower stages. A neutral terminal 33 and a ground terminal 34 are respectively arranged adjacent to and parallel to the lower side of.

The main breaker 31 is a single-phase three-wire system including a pair of voltage wires and a neutral wire, and is connected to a power supply line (not shown) drawn into the distribution board main body 11 to supply 200 V commercial power. You. An operation lever 38 for switching between disconnection and connection is protruded from the front surface of the main breaker 31. From the lower part of the main breaker 31, a pair of voltage wires 39 and 40 and a neutral wire
A load of 100 V is connected between the voltage lines 39 and 40 and the neutral line 41 via the branch breaker 32.
A pair of voltage lines 39 and 40 are connected to each other with conductive connecting plates 42 and 42 disposed adjacently along a plurality of branch breakers 32 in the upper and lower stages.
43, and the neutral 41 is connected to the lower neutral terminal 33.
It is connected to the.

Each branch breaker 32 is a 1P1E type 1
An operation lever 44 for switching between disconnection and connection is protruded at the center of the front surface of the P breaker.
5, 46 are arranged. Upper and lower two-stage branch breakers 32
The connecting portion 45 on the opposite side of the connecting plate 4 is connected via a connecting member 47.
Connected to 2,43.

The neutral terminal 33 and the ground terminal 34 have a terminal structure 51 having the same structure. The terminal structure 51 corresponds to the position of each adjacent branch breaker 32, that is, the terminal structure of the branch breaker 32. Multiple terminal parts 52 at the same pitch as the juxtaposed pitch
Are arranged respectively. The neutral wire 41 and the ground wire 53 are connected to the left end of the terminal structure 51, respectively, and the relay wires 54 and 55 connecting the neutral wire terminal 33 and the ground terminal 34 to each other are connected to the right end. .

In FIG. 3 and FIG. 4, the terminal structure 51 constituting the neutral terminal 33 and the ground terminal 34 has a vertically elongated insulating cover 61, and each terminal section 52 on the front surface of the insulating cover 61. Position, the wire insertion hole 62 and the button hole
63 are formed adjacent to each other. The rear surface of the insulating cover 61 is formed with an opening, and inside the insulating cover 61 is formed a terminal housing portion 64 to which each wire insertion hole 62 and button hole 63 communicate. Flanges 65 are formed at both ends of the insulating cover 61,
A mounting screw 66 mounted on the device mounting plate 35 is inserted into each of the flange portions 65.

A conductive terminal plate 67 is fitted on the rear surface of the insulating cover 61, and both ends of the terminal plate 67 are connected to the insulating cover 61.
It extends longer than both ends. The terminal plate 67 has a connection plate portion 68 formed on one side of the electric wire insertion area facing the electric wire insertion hole 62.

In each terminal storage portion 64 of the insulating cover 61, a quick connection terminal (self-locking terminal) 69 for connecting the electric wire (power supply line, ground wire) inserted into the electric wire insertion hole 62 is provided. I have. At an intermediate portion of each quick connection terminal 69, a mounting piece 70 is formed to be held in a state of being sandwiched between the insulating cover 61 and the terminal plate 67 in the terminal storage section 64, and one end of the mounting piece 70 is formed. A locking piece 71 that bites into the wire inserted into the wire insertion area to prevent it from coming off is formed, and is bent into a substantially U-shape at the other end of the mounting piece 70 and inserted into the wire insertion area. A crimp piece 72 for crimping the electric wire to the connection plate 68 is formed.

In each button hole 63 of the insulating cover 61, a release button 73 is inserted and arranged from the inside of the terminal housing portion 64 side.

On the front surfaces of both ends of the terminal plate 67 protruding from the insulating cover 61, a neutral wire 41, a ground wire 53, a relay wire 54,
Screw terminals 74 for connecting 55 are screwed respectively.

Then, by inserting the electric wire into the electric wire insertion hole 62, the electric wire is press-fitted between the terminal plate 67 and the quick connection terminal 69, and the electric wire is stopped and locked by the quick connection terminal 69. Electrically connected. When the wire is removed for maintenance or the like, the release button 73 is pushed to release the wire from being locked by the quick connection terminal 69, and the wire is removed from the wire insertion hole 62 in this state. Pull it forward.

As shown in FIG. 1, in each terminal portion 52 of the neutral terminal 33 and the ground terminal 34, an electric wire insertion hole 62 is arranged on the side close to the wiring port 23 and on the side close to the branch breaker 32. Release button 73 is arranged.

The wiring on the load side is drawn into the distribution board main body 11 from the wiring port 23 of the distribution board main body 11 and wired.

FIG. 2 shows a wiring state of the wiring 81 on the load side (100 V equipment) to the distribution board. The wiring 81 is composed of a pair of power supply lines 82 and 83 and a grounding line 84, while Is connected to the connection section 46 of the branch breaker 32,
The other power supply line 83 is connected to the terminal portion 52 of the neutral terminal 33,
The ground wire 84 is connected to the terminal portion 52 of the ground terminal 34.

Therefore, since the neutral terminal 33 and the ground terminal 34 are provided adjacent to the connecting portions 46 of the plurality of branch breakers 32, the connecting portions 46, the neutral terminals 33 and Wiring on the load side to earth terminal 34
81 can be easily connected without adjusting the length, making wiring work easy.

Further, a neutral terminal 33 and a ground terminal 34
Since the terminal portions 52 are provided at positions corresponding to the respective branch breakers 32, i.e., at the same pitch as the juxtaposed pitch of the branch breakers 32, the distance between the adjacent terminal portions 52 is wide and the branch breakers 32 and The correspondence relationship with each terminal section 52 becomes clear, the power supply line 83 and the ground line 84 can be easily connected to the terminal section 52, and wiring work can be facilitated.

In addition, the neutral terminal 33 and the ground terminal 34
In both cases, since the quick connection terminals 69 are used, wiring work can be facilitated.

5 and 6 show another embodiment. FIG. 5 is a bottom view of a branch breaker of a distribution board, and FIG. 6 is a circuit diagram of the distribution board.

The case where a branch breaker 32b for 2P is used together with the branch breaker 32 for 1P will be described. In addition,
Reference numeral 44a in FIG. 5 is an operation lever for switching between disconnection and connection of the branch breaker 32b for 2P.

Then, the wiring 81 on the load side (200 V equipment)
The wiring 81a is composed of a pair of power lines 82a, 83a and a ground line 84a, and both power lines 82a, 83a are connected to the connection portions 46, of the branch breaker 32a. The ground wire 84a is connected to the terminal portion 52 of the ground terminal 34.

Therefore, even in this case, the branch breaker
Since the ground terminal 34 is disposed adjacent to the connection portion 46 of the branch breaker 32a, it is easy to adjust the length of the load-side wiring 81a to the terminal portion 46 and the ground terminal 34 of the branch breaker 32a. The same operation and effect can be obtained, for example, the wiring operation can be easily performed.

FIG. 7 shows still another embodiment, and FIG. 7 is a perspective view of a neutral terminal and a ground terminal.

The terminal structure 51 constituting the neutral terminal 33 and the ground terminal 34 has a terminal portion 52 independently and a conductor 81 connecting the terminal portions 52. Each terminal section 52 has an insulating cover 61 having a wire insertion hole 62 and a button hole 63, a quick connection terminal (not shown), a release button 73, and the like.

As described above, by having each terminal portion 52 independently and having the conductor 81 connecting each terminal portion 52, the correspondence relationship between each branch breaker 32 and each terminal portion 52 becomes clearer. , Wiring work can be facilitated.

The terminal portions 52 of the neutral terminal 33 and the ground terminal 34 correspond to the number of branch breakers 32 provided that they have the maximum number of branch breakers 32 that can be incorporated into the distribution board body 11. In addition to the above, the neutral terminal 33 and the ground terminal 34 can be shared for the type of distribution board.

[0047]

According to the first aspect of the present invention, the neutral terminal and the ground terminal are disposed adjacent to the terminal portions of the plurality of branch breakers.
The wiring on the load side can be easily connected to the neutral terminal and the ground terminal without adjusting the length, thereby facilitating the wiring operation.

According to the distribution board according to the second aspect, the first aspect.
In addition to the effects of the distribution board described above, a terminal portion having a quick connection terminal is provided at a position corresponding to each branch breaker of the neutral terminal and the ground terminal, that is, a position having the same pitch as the juxtaposed pitch of the branch breakers. Therefore, it is easy to connect the power supply line and the ground line to the terminal portion, and the wiring work can be facilitated.

According to the distribution board described in claim 3, claim 2 is provided.
In addition to the effects of the distribution board described above, since each terminal section is independently provided and a conductor that connects each terminal section is provided, the correspondence between each branch breaker and each terminal section becomes clear, and wiring work Can be easily done.

[Brief description of the drawings]

FIG. 1 is a front view of the internal structure of a distribution board showing one embodiment of the present invention.

FIG. 2 is a circuit diagram of the distribution board.

FIG. 3 is a front view of a neutral terminal and a ground terminal.

FIG. 4 is a sectional view of a neutral terminal and a ground terminal according to the first embodiment;

FIG. 5 is a bottom view of a branch breaker of a distribution board according to another embodiment.

FIG. 6 is a circuit diagram of the distribution board.

FIG. 7 is a perspective view of a neutral terminal and a ground terminal showing still another embodiment.

[Explanation of symbols]

 11 Distribution board body 31 Main breaker 32 Branch breaker 33 Neutral terminal 34 Earth terminal 45, 46 Connection 52 Terminal 69 Quick connection terminal 81 Conductor

Claims (3)

[Claims] 1. A distribution board main body; a main breaker for a single-phase three-wire system including a voltage wire and a neutral wire provided in the distribution board main body; A plurality of branch breakers having connection portions on both sides crossing the juxtaposition direction, one connection portion being connected to the voltage line side of the main breaker; and being disposed adjacent to the other connection portion of the plurality of branch breakers. And a neutral terminal connected to the neutral line side of the main breaker; and a ground terminal disposed adjacent to the other connecting portion of the plurality of branch breakers. Switchboard. 2. The distribution board according to claim 1, wherein the neutral terminal and the ground terminal each have a terminal portion having a quick connection terminal at a position corresponding to each branch breaker. 3. The distribution board according to claim 2, wherein the neutral terminal and the ground terminal each have a terminal portion independently and a conductor connecting the terminal portions.