JPH0652948A - Wiring device - Google Patents

Abstract

PURPOSE:To easily carry out house wiring even when a worker is unskilled about wiring by connecting a bifurcated cable and a power source cable to be connected to a load and to a switch by a connector method, by preventing connection of connection parts that have different switch types or different current ratings, and by providing an erroneous connection preventing structure on the connection part of large current rating. CONSTITUTION:A wiring device is divided into blocks 1a-1c, and a connection part 10c to/from which a harness connector of a power source cable 5 is attached/detached is provided on one end of the block. The connection part 10c is mounted on both side surfaces of each block, and connection of the connection parts 10c of different types or different current ratings is thereby prevented, and an erroneous preventing structure of recess-protrusion fitting type is provided on the connection part of large current rating. A vertical groove 14b is preferentially fitted into the protrusion of a harness plug 8. In this structure, connection work can be carried out easily and accurately even by other than an expert, and the harness plug can be used in common.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device used for indoor wiring in a condominium or the like.

[0002]

[Prior Art] In conventional indoor wiring such as apartments,
A so-called joint box has been used as a wiring device for branching the power cable.
This conventional joint box has a structure in which a connecting portion for connecting a branch cable, which is connected to, for example, an outlet, in a quick-connecting manner is provided at each branch end of a plurality of branch power cables. In other words, if you remove the coating of the branch cable and insert the core wire into the wire insertion port provided in the connection part,
The core wire is elastically sandwiched between the terminal plate and the lock spring provided inside to make an electrical connection, and the locking force of the lock spring prevents the branch cable from coming off and holds it mechanically. It is supposed to be done.

[0003]

However, this kind of quick-connecting joint box has a problem that wiring cannot be easily performed by a person having specialized knowledge. The present invention has been made in view of the above points, and it is an object of the present invention to provide a wiring device that can be easily wired even by a person who does not have specialized knowledge and is free from erroneous connection. To provide.

[0004]

In order to achieve the above-mentioned object, the present invention provides a wiring device for branching a plurality of power supplies to a wiring device such as a switch or an outlet, a load, or the like. It is equipped with a plurality of connecting parts for connecting a plurality of branch cables and power cables to be connected, respectively, to prevent connection of connecting parts with different switch types and different current ratings, and among the connecting parts with different current ratings, A feature of the present invention is that a connection portion having a large current rating is provided with an erroneous connection prevention structure that can be connected.

Further, the erroneous connection prevention structure can be formed by a concave and convex fitting portion which allows only corresponding parts of the connector and the connecting portion to be fitted.

[0006]

By connecting the branch cables connected to the load and the switch by the connector method, the wiring work can be easily performed, and the connection of the connection parts having different switch types and different current ratings can be prevented. Of the connection parts with different current ratings, the connection part with a large current rating is provided with a connectable connection prevention structure to prevent incorrect connections, so that only people with specialized knowledge can do so. Also, wiring can be performed easily and accurately.

[0007]

1 to 15 show an embodiment of the present invention.
As shown in FIG. 15, the wiring device 1 of the present embodiment is for branching and supplying power to a load 2 such as a lighting device and wiring devices 3 and 4 such as switches and outlets. , Each indoor zone).

In the case of this embodiment, the wiring device 1 is formed into blocks according to the application. For example, in the present embodiment, a block 1a for the feed wiring used when a plurality of power supply lines are branched, and a block 1b for a switch circuit used when the load 2 is turned on / off by a switching operation of one switch 6, And a block 1c for a three-way switch circuit which is used when the load 2 is turned on and off by the switching operation of the two switches 6.

Each of the blocks 1a to 1c is provided at one end with a connecting portion 10a for detachably connecting the harness connector 7 attached to the power cable 5, and at the other end, a cable for feeding wiring (not shown). There is provided a connecting portion 10b for detachably connecting the harness plug attached to (see, for example, FIG. 1). However, each block 1a-1
When connecting c, as described later, each connecting portion 1
0a and 10b are used to connect to each other.
Then, from both side surfaces of each of the blocks 1a to 1c, the load 2
And a connecting portion 10 for connecting a harness plug 8 attached to a branch cable 6 for connection with the wiring devices 3 and 4
c is provided.

As the connecting portion 10c for connecting the harness plug 8 attached to the branch cable 6 for connecting the load 2 and the wiring devices 3, 4 to each other, as shown in FIGS.
There are multiple types as shown in (f). When roughly classified, a harness plug 8 attached to a branch cable 6 connected to a load 2 such as a lighting device and a wiring device 4 such as an outlet shown in FIGS. 16A to 16D is connected. And a harness plug 8 attached to a branch cable 6 connected to a wiring device 3 such as a switch shown in FIGS. 16 (e) and 16 (f) is connected.
As the connecting portion 10c to which the harness plug 8 attached to the branch cable 6 connected to the load 2 such as the lighting equipment or the wiring equipment 4 such as an outlet is connected, the rating shown in FIG. Fig. 16 with the one shown in a) and with a grounding pole with a rating of 15A, 125V
The one shown in (b) and the one shown in FIG. 16 (c) having a rating of 20A, 125V, and the one having a rating of 20A, 125V.
16d with a ground electrode. In addition, the connection portion 10c to which the harness plug 8 attached to the branch cable 6 connected to the wiring device 3 such as a switch is connected is the one for the one-way switch shown in FIG. 16 (e). , For a three-way switch shown in FIG. 16 (f).

The above-mentioned connecting portions 10c are attached to both side surfaces of the blocks 1a to 1c, respectively. The connection portions 10c described above are prevented from being connected to the connection portions 10c having different switch types and different current ratings, and the connection portions 10c having different current ratings can be connected to the connection portion 10c having a large current rating. A protection structure is formed. This erroneous connection prevention structure is formed by a concavo-convex fitting portion that allows only the corresponding connector and the corresponding connecting portion 10c to be fitted.
The vertical groove 14b is provided at a position corresponding to the position of the ridge 100 provided on the harness plug 8 to be connected to the harness plug 0c, or chamfered so as to match the chamfered shape provided on the harness plug 8. It is formed by applying. Harness plug 8 to be connected to each of the connecting portions 10c
There are various types as shown in FIGS. 16A to 16F according to the shape of each connecting portion 10c. here,
The connection portions 10c and the harness plugs 8 can be connected to each other as shown by the arrows in FIG. 16 by the erroneous connection prevention structure. That is, the harness plug 8 shown in FIGS. 16 (e) and 16 (f), which is to be respectively connected to the connecting portion 10c for the one-way switch or the three-way switch shown in FIGS. 16 (e) and 16 (f).
Is the connecting portion 10c shown in FIGS. 16 (a) to 16 (d).
It is not possible to connect to.
In addition, the harness plug 8 shown in FIG. 16 (a), which does not have a ground electrode and has a small current rating, can be connected to any of the connection portions 10c shown in FIGS. 16 (a) to 16 (d). 16B, the harness plug 8 with the ground electrode shown in FIG. 16B is shown in FIGS. 16B and 16D.
It can be connected to any of the connecting portions 10c with a ground electrode shown in FIG. Further, the harness plug 8 without a ground electrode shown in FIG. 16C can be connected to any of the connecting portions 10c shown in FIGS. 16C and 16D. Further, the harness plug 8 with a ground electrode shown in FIG. 16D can be connected also to the connecting portion 10c shown in FIG. 16D. Here, any of the harness plugs 8 shown in FIGS. 16A to 16D can be connected to the connecting portion 10c shown in FIG. 16D.

The structure of the block 1c will be described with reference to FIGS. The housing 11 of this block 1c is
As shown in FIG. 2, a synthetic resin body 11a and a cover 1 are provided.
1b and. The body 11a and the cover 11b are fixed to each other by caulking the eyelet 92 through the eyelet holes 24a and 24b to be integrally combined. The connecting portion 10a formed at one end of the housing 11 has substantially the same structure as a harness plug (harness plug 8 in FIG. 15) for connecting cables, and as shown in FIG. The insertion port 12 into which the harness connector 7 attached to the connector 5 is fitted, and the lock piece 1 for preventing the harness connector 7 inserted into the insertion port 12 from coming off.
3 and 3.

The lock piece 13, as shown in FIG.
Mounting recess 18 provided at one end of the upper surface of the cover 11b.
The fixing piece 13c is fixedly attached to the opening 13 and the claw 13a formed at the tip end is formed in the opening 1 formed at one end of the attachment recess 18.
It has a structure in which it projects into the insertion opening 12 from 8a. Now, assuming that the harness connector 7 is fitted into the connecting portion 10a, the claw 13a of the lock piece 13 is locked in the lateral groove formed in the harness connector 7 to prevent the harness connector 7 from coming off. An operating portion 13b is formed on the other end side of the lock piece 13, and when the operating portion 13b is pushed into the mounting recess 18, the engagement state of the claw 13a with the lateral groove of the harness connector 7 is released, The harness connector 7 can be detached.

A connecting portion 10b formed at the other end of the housing 11 is a harness plug attached to a cable for feed wiring (because it is the same as 8 in FIG. 15, it will be described with reference numeral 8). ) Is formed in a convex shape to be fitted into the insertion opening, and the upper surface has a lateral groove 14a to which the lock piece (corresponding to the lock piece 13) of the harness plug 8 is provided so as not to come off. Two vertical grooves 14b are formed so that they can be connected only to each other. Here, the two vertical grooves 14b function as an erroneous connection preventing structure for the connecting portion 10b.

The connecting portion 10 is provided at the other end of the cover 11b.
The ears 16 extending laterally from b are formed, and the body 11
A receiving portion 15 for receiving the ear portion 16 is formed at one end of a by extending laterally from the connecting portion 10a. For example, when connecting the blocks 1c to each other, as shown in FIG. 6, the connecting portion 10b of one block 1c is fitted to the connecting portion 10a of the other block 1c. At this time, the ear portion 16 is placed on the receiving portion 15, and screws 90 and nuts 91 are screwed through the fixing holes 17a and 17b formed in the receiving portion 15 and the ear portion 16, respectively, and the blocks 1c are connected to each other. Are connected so that they will not come off. Here, although not shown in FIG. 2, the screw 90 is adapted to be screwed by engaging a screw stopper 93 (see FIG. 7 or FIG. 11). Although the above description has been made for the case of the blocks 1c, the blocks 1a to 1c can be arbitrarily connected as shown in FIGS. 14 (a) and 14 (b), for example.

In this way, the screw 90 and the nut 91 are screwed together to connect the blocks 1c to each other, so that the connecting portions 10a and 10b can be securely connected.
Even if there is a clearance between the insertion opening 12 of a and the connection portion 10b, there is an advantage that the connection state between the blade 21 and the blade receiving spring 22 described later is stable. Further, since the connection strength of the blocks 1a to 1c becomes strong, the power cable 5
It is also possible to eliminate the risk that the connecting portions 10a and 10b will be damaged by the pulling force of the branch cable 6.

From one side surface of the block 1c, two connection portions 10c ₁ to which a harness plug 8 attached to a branch cable 6 connected to a switch 3 is detachably attached, and a branch cable connected to a load 2 The harness plug 8 attached to the connector 6 is detachably attached to form one connecting portion 10c ₂ . These connecting portions 10c _1, 10c ₂ is are formed in the same shape as the connecting portion 10b respectively described above.

However, the connection portion 10c ₁ is not formed with a vertical groove 14b as an erroneous connection preventing structure, and the connection portion 10c ₂ is formed with only one vertical groove 14b. An individual harness plug 8 is connected to each of the connecting portions 10c ₁ and 10c ₂ and the connecting portion 10b. That is, since the protrusions that fit into the vertical grooves 14b are formed inside the insertion ports of the harness plugs 8 corresponding to each, the harness plugs 8 connected to the branch cable 6 are connected to each other for different purposes. Parts 10c ₁ and 10
c _2, so as not connected to 10b, it is eliminated the risk of misconnection.

Since this block 1c is for a three-way switch circuit, the connecting portion 10a,
10c _1, 10c is provided with a circuit portion for forming a three-way switch circuit between the _two, the circuit section are formed by a plurality of conductive plates 20. Here, in the case of the present embodiment, since the power cable 5 has a ground electrode, a total of six conductive plates 20 are provided.
_A 3-way switch circuit is formed using _{1 to} 20 ₆ .
The circuit portion of the block 1c is formed as shown on the upper surface of the housing 11 (internal circuit diagram) shown in FIG. The connecting portions 10a, 10b, 10c ₁ , 10c ₂
There is also a display to clarify the connection target.

Three plug blades 21 _{1 to} 21 ₃ are attached to the inside of the insertion port 12 of the connecting portion 10a, and the plug blade 2 for the ground electrode 2 is attached.
1 ₁ has a large protrusion amount and is first connected when the other blades 21 ₂ and 21 ₂ are connected to the harness connector 7,
In addition, it is removed at the end to ensure safety when attaching and detaching. Each connecting portion 10b, 10c ₁ , 10
The inside of c ₂ is divided into three storage compartments by partition walls. Here, the connecting portions 10b, the blade receiving spring 22 _{1-22 9} for accommodating compartment 10c ₁ are respectively housed, connecting part 1
The blade receiving springs 22 ₁₀ and 22 ₁₁ are respectively housed in the two housing compartments of 0c ₂ .

Each blade receiving spring 22₁~ 22₁₁And blade 2
1₁~ 21₃Is the conductive plate 20₁~ 20 ₆Connected by
It Here, in the case of the present embodiment, the blade receiving spring 22₁~ 22
₁₁Is the conductive plate 20₁~ 20₆Is formed integrally with
Blade 21₁~ 21₃Is the conductive plate 20₁~ 20₃Hardened
Fixed and attached. However, depending on the case, the blade 21
₁~ 21₃The conductive plate 20₁~ 20₃It will be formed integrally with
You may ask.

Each blade receiving spring 22₁~ 22₁₁And blade 21₁
~ 21₃Conductive plate 20₁~ 20₆The connection state by
This will be specifically described below. Each blade 21₁~ 21₃Is the connection
10b of blade receiving springs 22 arranged to face each other₁~ 22₃
And conductive plate 20₁~ 20₃And they are connected respectively. In addition, each
Conductive plate 20₂, 20₃Body 11a and cover in the center of the
-The fixing holes 19 for fixing 11b and 11b to the ceiling etc.
Since it is placed, it is bent to avoid this part. So
Then, the conductive plate 20₂The connection part 10c₂Blade receiving spring 22
_TenAre integrally connected, and the conductive plate 20₃Blade receiving spring 10c
₁Blade receiving spring 22₆Are connected together. Also the blade
Receiving spring 22_Four, 22₇Conductive plate 20 between _FourConnected by
Blade receiving spring 22_Five, 22₈Conductive plate 20 between_Five, Blade receiving spring
22₉, 22₁₁Conductive plate 20 between₆Are connected by.

Each of the conductive plates 20 _{1 to} 20 ₆ is a body 11
By arranging in block a as follows, the outer shape of the block 1c is prevented from becoming large. Specifically, as shown in FIG. 4, the conductive plates 20 ₁ and 20 ₅ are laid at the lowermost side, the conductive plate 20 ₂ is arranged thereon, and the conductive plate 20 ₃ is further arranged thereon. , Conductive plate 2 at the top
0 ₄ and 20 ₆ are arranged. It should be noted that in FIG. 4, the portions located in the respective layers are indicated by diagonal lines, and the portions marked with the same diagonal lines mean that they are arranged in the same layer. When the conductive plates 20 _{1 to} 20 ₆ are three-dimensionally arranged in this way, the thickness dimension and the occupied area of the block 1c can be reduced.

In order to arrange the conductive plates 20 _{1 to} 20 ₆ in a three-dimensional manner as described above and to keep the intervals thereof constant, as shown in FIG. 2, a plurality of mounting ribs 23 ₁ to 23 are placed. ₁₁
Is formed on the body 11a, and mounting ribs (not shown) corresponding to the respective mounting ribs 23 are formed on the cover 11b side so that the conductive plate 20 is arranged inside in a constant state. The vertical distance between the conductive plates 20 arranged in each layer is 3.2 mm, a sufficient insulation distance is ensured, and the thickness of the block 1c is as thin as 20 mm.

By the way, as described above, plural kinds of conductive plates 2 are used.
0₁~ 20₆Needing a higher cost
There's a problem. Therefore, as a method to improve this point,
Method may be adopted. The conductive plate 20₂, 20₃When
If the front and back are reversed, the conductive plate 20₂, 20₃Connection part 1
The portion connecting 0a and 10b is shown in FIG.
It is possible to have a common structure as shown in (b).
Therefore, different parts, that is, the conductive plate 20 ₂Blade receiver
Spring 22_TenThe part connected to the conductive plate 20₃Receiving the blade of
22₆Using a mold that has both parts that are connected to
The conductive plate 20₂, 20₃Are manufactured in common, and each conductive
Board 20₁, 20₃I will cut unnecessary parts with post processing
If so, this conductive plate 20₂, 20₃Mold forming
The cost can be reduced.

Further, as shown in FIGS. 5 (c) and 5 (d),
Conductive plate 20_Four, 20_FiveAnd blade 21 ₂, 21₃Have the same shape
The same shape can be obtained by forming the
Any thing can be used. Common as possible like this
If the conductive plate 20 is formed using a die, the die cost can be suppressed.
Therefore, the cost can be reduced. Moreover, the number of parts is reduced.
Therefore, it is possible to reduce the loss on the part supply side.

Next, the blocks 1b and 1a will be briefly described. Note that the following description will be given on the blocks 1b and 1a.
Only the points that are characteristic of. First, block 1b
As shown in FIG. 7 to FIG. 9, three connecting portions 10c ₁ are projected from one side surface and three connecting portions 10c ₂ are projected from the other side surface, and the internal circuits are arranged symmetrically. A switch circuit for connecting in series the load 2 and the switch 3 connected to the connected connection parts 10c ₁ and 10c ₂ is provided.
It has a configuration that includes a set.

Conductive plate 20 ₁ ′ -constituting the internal circuit
20 ₃ ′ has a structure for connecting the corresponding blades 21 and blade receiving springs 22 of the connecting portions 10 a and 10 b, respectively, in a substantially linear manner, and to the conductive plate 20 ₃ ′ on the connecting portion 10 c ₂ side. The blade receiving springs 22 ₂₆ , 22 ₂₈ , 22 ₃₀ are integrally connected, and the blade receiving springs 22 ₂₁ , 2 on the side of the connecting portion 10c ₁ are connected to the conductive plate 20 ₂ ′.
2 ₂₃ and 22 ₂₅ are integrally connected. Then, the blade receiving springs 22 ₂₀ and 22 ₃₁ are connected by the conductive plate 20 ₂₀ , the blade receiving springs 22 ₂₂ and 22 ₂₉ are connected to the conductive plate 20 ₂₁ , and the blade receiving spring 2 is further connected.
A conductive plate 20 ₂₂ connects between 2 ₂₄ and 22 ₂₇ .

Here, also in the case of this block 1b,
As shown in FIG.₂₀~ 20 _{twenty two}Placed on the bottom layer
And the conductive plate 20 on it₂’Is placed, and at the top
Conductive plate 20₁', 20₃’A three-dimensional structure
The overall shape is thin and small.
It The block 1a, as shown in FIGS.
Connection part 10c for connecting the outlet 4 to the side surface₃3 pieces
One connection part 10c₃Husband in the 3 sections
Each blade receiving spring 22 is arranged, and each connection portion 10c₃blade of
The receiving spring 22 is arranged between the connecting portions 10a and 10b, respectively.
Conductive plate 20₁"~ 20₃"Connected to the above conductive
Board 20₁"~ 20₃"Is the same as block 1b above
Arranged in a three-layer structure so that the overall shape is thin and small
I am doing it.

By the way, in this block 1a, the same plates as the conductive plates 20 ₁ ″ and 20 ₃ ″ can be used by reversing the front and back. Further, the conductive plate 20 ₂ ′ of the block 1 b and the conductive plates 20 ₁ ″ and 20 ₃ ″ can be connected using a common mold. In other words, 'if you allow connecting the conductive plates 20 ₄₀ provided with a blade receiving spring 22 to tip, for example, tack connection such as a conductive block 20 _2' conductive plate 20 _{and second} block 1b conductive plate 20 of the block 1a with ₁ ", 20 ₃ " can be formed. Also, 'if you can connect the conductive plate 20 ₄₀ in the conductive plate 20 _third block 1b' block 1b conductive plate 20 ₃ in the same manner it is also possible to form the conductive plate 20 ₂ "with. The By doing so, the die cost of the conductive plate 20 of the blocks 1a and 1b can be reduced.

The indoor wiring method using the wiring device 1 of the present invention will be described below. In the above description, the 6-branch type as the feed wiring block 1a and the 3 circuit type as the switch circuit block 1b for turning on / off the load 2 with one switch 3 have been described. In the following description, a 4-branch type block 1
The case of using a and a two-circuit type block 1b will be described. Further, the wiring device 1 is installed in blocks 1a to 1c.
A case will be described in which each one is used.

In the case of FIG. 15, the power supply line is branched into three in the block 1a, and the outlet 4 is connected to each branch end. Further, the block 1b is connected to a lighting device as a load 2 provided on the ceiling and a switch 3 provided near the door 30 at the entrance of the room so that the switch 3 can perform lighting control of the lighting device. is there. Further, a bed lighting provided on the wall as the load 2 is connected to the block 1c, and the switch 3 is provided near the door 30 at the entrance of the room and is connected to the switch 3 for operating the lighting equipment on the ceiling. , And the switch 3 arranged on the wall surface near the bed 31 are connected, and the lighting of the bed lighting can be controlled by any of the switches 3.

By thus performing the indoor wiring using the wiring device of this embodiment, the power cable 5 and the branch cable 6 connected to the load 2 and the wiring devices 3 and 4 can be connected by a connector system. , Wiring work can be done easily. Moreover, the connection portion 1 corresponding to the load 2, the wiring devices 3, 4 and the connectors 7, 8 for connecting the cables 5, 6 from the power source
0a, 10b, since 10c ₁ ~10c ₃ only are the erroneous connection prevention structure provided to be connected, not erroneous connection is made. Therefore, even a person who does not have specialized knowledge can perform wiring easily and accurately. In the above description, the load 2,
Although the case where the malfunction prevention structure is provided for the types of the wiring devices 3 and 4 and the power source has been described, the connectors 7 and 8 that can be connected to each of the blocks 1a to 1c are uniquely determined in order to further prevent the misconnection. It doesn't matter.

By the way, in the case of the above-mentioned indoor wiring, the branch cable 4 is not directly connected to the load 2 or the wiring devices 3 and 4, but wiring is performed using a relay cable.
Specifically, as a relay cable that attaches the harness plug 8 to the tip of the instrument cable 6a on the side of all the loads 2 and the wiring devices 3 and 4, and relays between the load 2 and the wiring devices 3 and 4 and the wiring device 1. Wiring is performed indoors by using a harness plug 8 attached to the wiring device 1 side and a harness connector 7 attached to the load 2 or the wiring devices 3, 4 side. With this configuration, the connection between the load 2 and the wiring devices 3 and 4 can be easily and reliably performed by the connector method. If the extension cable 6b and the instrument cable 6a, which are connected to each other, can be identified, the risk of erroneous connection is reduced.

By adopting this indoor wiring method, in a condominium or the like where the floor plan of the room and the installation location of the wiring equipment 5 are determined, if a relay cable of a predetermined length is prepared, the harness is used on site. Since only the connection between the connector 7 and the harness plug 8 is performed, the wiring work becomes easy. In addition, if the wiring device 1 of the present embodiment is installed in advance in various places in the room and relay cables of different lengths are prepared in advance, the indoor wiring can be freely performed, and the layout of the room can be changed. It is possible to easily deal with the case where the installation location of the wiring device is changed.

By the way, in the above description, the case where the indoor wiring is performed by the ceiling wiring has been described, but the present invention applies the floor wiring using a double floor structure floor called a system floor applied in an office or the like. It can also be applied to wiring using walls and walls, and further to internal wiring inside furniture such as OA panels.

[0037]

As described above, the present invention is provided with a plurality of connecting portions for connecting a plurality of branch cables and power cables connected to a load and a switch by a connector system, respectively, and connecting different types of switches and different current ratings. Prevents connection of parts, and of the connection parts with different current ratings, the connection part with a large current rating is equipped with a misconnection prevention structure that can be connected, so misconnections will not occur, so we have specialized knowledge Even if it is not a person, the connection work can be performed easily and accurately. In addition, since the misconnection preventing structure is configured to be connectable to the connection part having a large current rating among the connection parts having different current ratings, the harness to be connected to the connection part while preventing the misconnection. The plug can be made common, and the parts can be made common.

[Brief description of drawings]

FIG. 1 is a perspective view of one block of a wiring device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the above.

FIG. 3 is a plan view of the above.

FIG. 4 is a perspective view showing an arrangement structure of a circuit unit of the above.

FIG. 5 is an explanatory diagram of a method for reducing the die cost in the same as above.

FIG. 6 is a perspective view when the same is connected.

FIG. 7 is an exploded perspective view of another block of the wiring device.

FIG. 8 is a plan view of the above.

FIG. 9 is a plan view with the above cover removed.

FIG. 10 is an exploded perspective view of still another block of the wiring device.

FIG. 11 is a plan view of the above.

FIG. 12 is a plan view with the above cover removed.

FIG. 13 is a plan view of constituent members of the above circuit unit.

14 (a) and 14 (b) are plan views showing a wiring device configured by connecting respective blocks.

FIG. 15 is an explanatory diagram showing an indoor wiring method using the wiring device of the above.

FIG. 16 is an explanatory diagram illustrating each embodiment of the above-mentioned connecting portion.

[Explanation of symbols]

 1 Wiring device 2 Load 3,4 Wiring equipment 5 Power cable 6 Branch cable 10c Connection part

Claims (2)

[Claims] 1. A wiring device for branching a plurality of power supplies to supply to a wiring device such as a switch or an outlet or a load, wherein a plurality of branch cables and power cables connected to the load and the switch are respectively connected by a connector system. It is equipped with multiple connection parts to prevent the connection of connection parts with different switch types and different current ratings, and a misconnection prevention structure that can connect to the connection part with a larger current rating among the connection parts with different current ratings. A wiring device comprising: 2. The wiring device according to claim 1, wherein the erroneous connection prevention structure is formed by a concave-convex fitting portion in which only corresponding parts of the connector and the connecting portion can be fitted.