JPH05176433A - Wiring device - Google Patents

Abstract

PURPOSE:To elevate the reliability on connections and prevent the breakage of the connections, in wiring devices coupled with each other. CONSTITUTION:This device is equipped with a block for branching, a block for a switch circuit, and a block for three circuits. The connection 10b for sending wire of each block is made free of connection with the connection 10b for power cable of homogeneous or heterogeneous other block. Each block is provided with a receiver 15 and a lug 16 for screwing, which fixes the coupled condition when each block is coupled with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device which is used for wiring inside a building such as a condominium and is particularly suitable for constructing a three-way switch circuit.

[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 connected to, for example, an outlet or the like 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 locking spring provided inside to make electrical connection, and the locking force of the locking spring prevents the branch cable from coming off and holds it mechanically. It is supposed to be done.

[0003]

By the way, as a conventional joint box of this type, a plurality of joint boxes are connected to each other in order to easily cope with an increase in load or wiring equipment or a change in installation location. There is a structure that can be connected. The joint boxes can be connected by the same connection as the connector connection.

However, when the joint boxes are connected to each other in such a so-called connector connection state, it is necessary to provide a clearance at the connection portion in order to ensure a reliable connection. For this reason,
There is a problem in that the connection part is rattled and the contact state is not stable. Further, if the joint boxes are left connected in such a connector connected state, there is a fear that the connecting portion may be broken by the pulling force of the cable.

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 is connected to each other with high reliability of connection and without fear of damage to the connection portion. To do so.

[0006]

According to the present invention, in order to achieve the above object, a block for power supply branching, a block for a switch circuit for turning on / off a load with one switch, and a load with two switches. And a block for a three-way switch circuit for turning on and off, each of the blocks includes a connecting portion for connecting a power cable and a cable for feeding wiring, and the connecting portion for feeding wiring of each of the blocks is the same type and Each block is provided with a fixing portion that is freely connectable to the connection portion for the power cable of any other block of a different type and that fixes the connection state when the blocks are connected.

In order to make each block thin and small, it is preferable that the conductive members forming the internal circuit of each block are three-dimensionally arranged with an appropriate insulation distance. Further, in order to reduce the die cost of the conductive member, if the conductive member can be manufactured by using the common die as much as possible, a plurality of power cables, feed wiring cables and loads or a plurality of devices connected to the wiring equipment are connected. The connecting portions to which the branch cables are respectively connected may be formed in each block in a substantially symmetrical state, and the conductive members forming the internal circuit of each block may be three-dimensionally arranged with an appropriate insulation distance.

[0008]

According to the present invention, by providing each block with the fixing portion for fixing the connected state when the blocks are connected as described above, the connected state can be maintained at the portions other than the connecting portion of each block. In this way, the contact state of the connection part is stable and the reliability of the connection is high, and the cable pulling force is not applied to the connection part by receiving the cable pulling force at the fixed part. It is designed so that the parts will not be damaged.

[0009]

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 7 is turned on / off by switching operation of one switch 6, And a block 1c for a three-way switch circuit which is used when the load 7 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 feed 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 block 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 equipment 3, 4.
c is provided.

First, the structure of the block 1c is shown in FIGS.
It will be explained based on. Housing 1 for this block 1c
As shown in FIG. 2, 1 is composed of a synthetic resin body 11a and a cover 11b. 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 is
The structure is substantially the same as the harness plug (harness plug 8 in FIG. 15) for connecting the cables to each other.
As shown in FIG. 3, the harness connector 7 attached to the power cable 5 is fitted into the insertion port 12, and the harness connector 7 inserted into the insertion port 12 is retained by a lock piece 13.

The lock piece 13, as shown in FIG.
Mounting recess 18 provided at one end of the upper surface of the cover 11b.
The fixed piece 13c is fixedly attached to the opening 1, and the claw 13a formed at the tip portion 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 in 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.

The connecting portion 10b formed at the other end of the housing 11 is a harness plug attached to the cable for the feed wiring (the same as 8 in FIG. 15, so it will be described with reference numeral 8). ) Is formed in a convex shape to be fitted in the insertion port, and the upper surface has a lateral groove 14a which is prevented from coming off by a lock piece (corresponding to the lock piece 13) of the harness plug 8 and a predetermined harness plug 8 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 ear portion 16 extending laterally from b is 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 the screws 90 and the nut 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 into a screw stop 93 (see FIG. 7 or 10). 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 reliably 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 6 is formed with one connecting portion 10c ₂ to which the harness plug 8 is detachably attached. These connecting portions 10c ₁ and 10c ₂ are formed in the same shape as the connecting portion 10b described above.

However, the connecting portion 10c ₁ is not formed with a vertical groove 14b as an erroneous connection preventing structure, and the connecting portion 10c ₂ is formed with only one vertical groove 14b. each connecting portion 10c _1, 10c ₂ and the connecting section 10b are to be connected to a separate harness plug 8. 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,
A circuit portion forming a three-way switch circuit is provided between 10c ₁ and 10c ₂ , and this circuit portion is 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
It 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 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 shown 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.

[0024] Incidentally, the respective conductive plates 20 ₁ to 20 ₆ sterically arranged as described above, in order to hold the spacing constant state, a plurality of mounting ribs 23 ₁ to 23 as shown in FIG. 2 ₁₁
Are 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
When 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 in 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 symmetrically arranged. A switch circuit for connecting the load 2 and the switch 3 connected to the connected connection parts 10c ₁ and 10c ₂ in series between the power supplies.
It has a structure that includes a set.

Conductive plate 20 ₁ 'constituting the above internal circuit
20 ₃ ′ has a structure that connects 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 connects the conductive plate 20 ₃ ′ to 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 a 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, in the case of this block 1b as well,
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 three-layer 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
The blade receiving springs 22 are arranged, and the respective connecting portions 10c₃blade of
The receiving spring 22 is arranged between the connecting portions 10a and 10b, respectively.
Conductive plate 20₁"~ 20₃Connected to the above
Board 20₁"~ 20₃"As in 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 block 1a for the feed wiring has a 6-branch type, and the block 1b for the switch circuit for turning the load 2 on and off with one switch 3 has a three-circuit type. 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 performing 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. In addition, 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,
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, but in order to further prevent the misconnection, the connectors 7 and 8 that can be connected to each of the blocks 1a to 1c are uniquely determined. It doesn't matter.

By the way, in the case of the 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 by using the relay cable 6b. Specifically, a harness cable 8 is attached to the tips of all the device cables 6a on the side of the loads 2 and the wiring devices 3 and 4, and a relay cable 6b that relays between the loads 2 and the wiring devices 3 and 4 and the wiring device 1. As an example, the wiring is carried out indoors by using the one in which the harness plug 8 is attached to the wiring device 1 side and the harness connector 7 is 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 surely made by the connector method. In addition, extension cables 6 connected to each
If it is possible to distinguish between b and the instrument cable 6a, the risk of incorrect connection is reduced.

If this indoor wiring method is adopted, in a condominium, etc. where the floor plan of the room and the installation location of the wiring equipment 5 are fixed, it is only necessary to prepare the relay cable 6b of a predetermined length at the site. Harness connector 7
And the harness plug 8 are simply connected to each other, which facilitates the wiring work. In addition, if the wiring device 1 of the present embodiment is installed in advance in various places in the room and the relay cables 6b having different lengths are prepared in advance, the indoor wiring can be freely performed and the room layout can be changed. It is possible to easily deal with the case where the installation location of wiring equipment is changed.

In the above description, the case where the ceiling wiring is used for the indoor wiring has been described. However, the present invention applies the floor wiring to a floor having a double floor structure, which is a so-called 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 in furniture such as OA panels.

[0037]

As described above, the present invention has a block for branching a power source, a block for a switch circuit for turning on / off a load with one switch, and a three-way switch for turning on / off a load with two switches. A block for a circuit, each block is provided with a connection portion for connecting a power cable and a cable for feed wiring, and the connection portion for feed wiring of each of the blocks is of the same or different type. The connection part for the power cable can also be connected freely, and each block is provided with a fixing part that fixes the connection state when connecting each block, so it is possible to maintain the connection state at the parts other than the connection part of each block. Since the contact state of the connection part is stable and the connection reliability is high, and the cable pulling force can be received at the fixed part, the cable pulling force at the connection part Not reach, the connecting portion is not damaged.

Further, when the conductive members forming the internal circuit of each block are three-dimensionally arranged with the insulation distance kept appropriately, the space occupied by the conductive members can be narrowed, and each block can be made thin and small. it can. In addition, the power cable,
The connecting parts to which the feed wiring cable and the plurality of branch cables connected to the load or the wiring equipment are respectively connected are formed in substantially symmetrical states in each block, and the conductive members forming the internal circuit of each block are appropriately insulated. If the three-dimensional arrangement is performed while keeping the same, the conductive member can be manufactured by using the common mold as much as possible, and thus the mold cost of the conductive member can be reduced.

[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 the constituent members of the circuit unit of the above.

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.

[Explanation of symbols]

1 wiring apparatus 1a~1c block 2 load 3, 4 wiring device 5 Power cable 6 branched cable 7 harness connector 8 harness plug 10a, 10b, 10c ₁ ~10c ₃ connecting portion 15 receiving portion 16 ears 20 conductor plate

Claims (3)

[Claims] 1. A block for power supply branching, a block for a switch circuit for turning on / off a load with one switch, and a block for a three-way switch circuit for turning on / off a load with two switches, Each of the blocks has a connecting portion for connecting a power cable and a cable for feed wiring, and the connecting portion for feed wiring of each of the blocks is connected to a connecting portion for power cables of other blocks of the same type or different types. A wiring device characterized in that each block is provided with a fixing portion which is flexible and fixes the connected state when the blocks are connected. 2. The wiring device according to claim 1, wherein conductive members forming an internal circuit of each block are three-dimensionally arranged with an insulating distance maintained appropriately. 3. A power supply cable, a feed wiring cable, and a connection portion to which each of a plurality of branch cables connected to a load or a wiring device is connected is formed in each block in a substantially symmetrical state, and an internal circuit of each block is configured. 2. The wiring device according to claim 1, wherein the conductive members are three-dimensionally arranged with the insulation distance maintained appropriately.