JPH05205815A - Wiring device - Google Patents

Abstract

PURPOSE:To prevent erroneous connection of a power supply cable. CONSTITUTION:A wiring device comprises a connection part 8 for connecting power supply cables 3, 4 having a ground pole and comprising VVF wire. Cable inserting holes 13 are formed in a lateral line at this connection part 8. A pitch A between a wire inserting hole 132 for inserting a core wire 16 of the power supply cables 3, 4 for the ground pole and the other wire inserting hole 131 is set to be larger than a pitch B between the other wire inserting holes 131. By forming the core wires 16 of the power supply cables 3, 4 and matching them with the pitch of the wire inserting holes 13, therefore, possibility of erroneous connection is decreased. A recess 20 indicating the position of the wire inserting hole 132 for the ground pole is formed at an upper surface of the connection part 8. The position of the wire inserting hole 132 for the ground pole can thus be recognized by groping.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring device for connecting a cable having a ground electrode in a quick connection manner.

[0002]

2. Description of the Related Art A conventional wiring device has a structure in which a VVF line, which is a power cable having a relatively hard single-core wire, can be connected in a quick connection manner. The connection of the VVF wire to the wiring device of this type is performed by inserting the core wire with the coating removed into an electric wire insertion hole provided in the wiring device. At this time,
The core wire is elastically sandwiched between the terminal plate provided inside the wiring device and the locking spring to make an electrical connection, and the locking spring is locked to the core wire to prevent the VVF wire from coming off. ..

[0003]

By the way, in the conventional wiring device as described above, in order to reduce the thickness, the wire insertion holes into which the VVF wires are inserted are often formed in a horizontal row. However, in a wiring device for connecting, for example, a three-core VVF wire having a ground electrode, when the wire insertion holes are formed in a horizontal row as described above, the ground wire and the other wire insertion holes are mistaken for the core wire. It was very dangerous because it could be inserted.

Therefore, conventionally, an indication indicating that it is for a ground electrode is stamped, for example, so that it can be seen from this display that it is a ground electrode. However, the above-mentioned display cannot be easily identified in a dark place, and therefore there is a risk that the core wire of the ground electrode may be erroneously inserted into the wire insertion hole other than the ground electrode. The present invention has been made in view of the above points, and an object thereof is to provide a wiring device that is less likely to insert a core wire by mistake for a ground electrode and another wire insertion hole. is there.

[0005]

According to the present invention, in order to achieve the above object, the pitch of connecting the electric wire insertion hole for inserting the core wire of the power cable serving as the ground electrode and the other electric wire insertion hole to another electric wire is set. The pitch between the insertion holes is made wider than that of the connection holes, and a concave portion or a convex portion indicating the position of the insertion hole for the ground electrode is formed in the connection portion.

If there is a connecting portion for connecting a cable that does not have a ground electrode, a concave portion or a convex portion for distinguishing the connecting portion from another connecting portion for connecting a power cable is formed on the connecting portion. It is preferable that the connection portion having no pole and the connection portion having the ground electrode can be easily distinguished.

[0007]

The present invention has the above-mentioned configuration,
This reduces the risk of accidentally inserting the grounding electrode core wire into the other wire insertion port by changing the pitch of the grounding electrodes, and makes it easy to identify the position of the grounding electrode from the concave or convex portion. Reduce the risk of inserting the core wire of the ground electrode into the wire insertion hole other than for the ground electrode.

[0008]

1 to 5 show an embodiment of the present invention. The wiring device 1 of the present embodiment is used when performing indoor wiring as shown in FIG. In the following description, the wiring device 1 will be called a joint box. In this indoor wiring, the joint box 1 is provided in various places in the room, and the power cable 3 from the distribution board and a plurality of wiring cables 4 are connected to the joint box 1. The joint box 1 is installed, for example, in the ceiling or the like so as to be inconspicuous. Then, as the wiring device 5, a device provided with the device cable 6 is used, and the harness plug 11 is attached to the tip of the device cable 6. A harness connector 10 is attached to the tip of the wiring cable 4, and the wiring device 5 and the wiring cable 4 are connected by harness connection.

In the case of FIG. 2, there are various types of joint box 1 as described below. Figure 4
The joint box 1a shown in (a) is for branching the power supply line into three to feed wiring, and is used, for example, for feeding wiring to another joint box 1 or as shown in FIG. An outlet as the wiring device 5 is connected to the. In the figure, W indicates the voltage side, L indicates the ground side, and the earth mark indicates the earth electrode.

Further, the joint box 1b shown in FIG. 4 (b) connects the feed wiring, the wiring device 5 for connecting the load and the switch 9 for controlling the load 7, and in the case of FIG. The load 7 is a lighting fixture installed on the ceiling, a hook ceiling is used as the wiring fixture 5 for connecting the load, and the lighting fixture is turned on / off by a switch 9 provided near the door 30 at the entrance of the room. It is used when doing.

A joint box 1c shown in FIG. 4 (c).
Is for connecting a wiring device 5 for connecting a load and a plurality of switches 9 for controlling the load 7, respectively. In the case of FIG. 2, the load 7 is a lighting device for bed lighting provided on a wall. An outlet for connecting a lighting device is used as the wiring device 5 for connecting the load, and the switch 9 is provided with a switch 9 for operating the lighting device on the ceiling, which is provided near the door 30 at the entrance of the room. The one provided continuously and the one provided on the wall surface in the vicinity of the bed 31 are used, and by forming a so-called three-way switch circuit,
It is used when the bed lighting can be turned on and off by any of the switches 9.

Incidentally, the joint box 1 of this embodiment
As shown in FIG. 3, each of the joint boxes 1a is
1c are integrated, and the power supply lines are commonly connected inside the joint box 1. The joint box 1 is provided with a plurality of connecting portions 8 for connecting the cables 3 and 4 on both end surfaces, and the connecting portions 8 are formed with electric wire insertion holes 13 in a horizontal row. However, in the case of the present embodiment, the wire insertion hole 13 of the connecting portion 8 is formed as follows.
In the following description, for simplicity, the joint box 1 used when the power supply line is branched into three is used.

In the case of this embodiment, as shown in FIG. 1, the continuous pitch A of the wire insertion holes 13 ₂ for the ground electrode is larger than the continuous pitch B of the wire insertion holes 13 ₁ on the voltage side and the ground side. Is also wide. The cables 3 and 4 formed of VVF wires connected to the joint box 1 are formed by forming the core wires 16 to match the arrangement pitch of the wire insertion holes 13 of the connection portion 8. With this configuration, the cables 3 and 4 cannot be inserted upside down, and therefore the risk of inserting the core wire 16 of the ground electrode into the wire insertion hole 13 ₁ other than for the ground electrode can be reduced.

In this embodiment, the wire insertion hole for the ground electrode is used.
Thirteen₂On the top of the housing corresponding to
A recess 20 is provided, and an electric wire for the ground electrode is inserted by the recess 20.
Entry hole 13₂The position of is shown. Also, the electric wire of the connecting portion 8
Insertion hole 13₁, 13₂On the upper and lower inner surfaces of the recess where
Is the wire insertion hole 13 for the ground electrode.₂And this wire insertion hole 13
₂Wire insertion hole 13 of the ground side electrode adjacent to₁Distinguish between
The possible projections 21 are respectively formed. Do this
If so, even if it is a dark place, you can identify the position of the ground electrode by feeling
Can be accidentally inserted into the wire insertion hole other than for the ground electrode by mistake.
The risk of inserting the can be further reduced.

To connect the cables 3 and 4 to the joint box 1, when the core wires 16 of the cables 3 and 4 are inserted, the core wires 16 are elastically held and connected by a terminal plate and a locking spring provided inside. Done. Further, when disconnecting the cables 3 and 4 connected by the quick connection method, it is possible to insert a tool or the like through the release hole 14 and operate a release button provided inside. There is. Since this type of quick connection terminal is well known in the art, a detailed description thereof will be omitted.

Next, the harness connector 10 and the harness plug 11 attached to the respective tips of the wiring cable 4 and the equipment cable 6 provided in the wiring equipment 5 will be briefly described. In this embodiment, the harness connector 10 is attached to the tip of the wiring cable 4, and the harness plug 11 is attached to the tip of the instrument cable 6 of the wiring instrument 5 such as an outlet or a hook ceiling.

The harness plug 11 is provided with a recess at the tip thereof, and is provided with three blades in the recess, and the harness connector 10 has a projection at the tip which is fitted into the recess of the harness plug 11. A blade receiving hole is formed in the tip surface of the protrusion, and a blade receiving spring to which the blade of the harness plug 11 inserted through the blade inserting hole is connected is provided inside. .. Here, a quick-connect terminal similar to that of the joint box 1 is housed inside the rear end portion of the harness connector 10, and the core wire 16 of the wiring cable 4 is inserted into the electric wire insertion hole of the connecting portion formed on the rear end surface. Is inserted so that the wiring cable 4 can be connected by a quick connection method. The harness plug 11 is attached in advance to the instrument cable 6 of the wiring instrument 5. A lock piece 12 for fixing the connected state of the harness connector 10 is provided on the upper surface of the harness plug 11.
When is pressed, the fixed state of the harness connector 10 can be released and the harness connector 10 can be removed. In addition, these harness connector 10 and harness plug 1
1 is also well known.

If any one of the connecting portions 8 is for connecting a wiring device such as the switch 5 or the outlet 9, the connecting portion 8 is provided with an electric wire for a ground electrode as shown in FIG. The holes 13 ₂ may not be present. Therefore, in such a case, the recess 22 indicates that the connecting portion 8 does not have the wire insertion hole 13 ₂ for the ground electrode. In this case, the recess 22 is the wire insertion hole 1 for the ground electrode.
3 due to wider than recess 20 showing a _second position in advance so as to be clearly identified. By doing so, it becomes possible to identify the type of the connecting portion 8 by a fumbling.

[0019]

As described above, according to the present invention, the connection pitch between the wire insertion hole for inserting the core wire of the power cable serving as the ground electrode and the other wire insertion hole is set to be smaller than the connection pitch between the other wire insertion holes. Since the concave part or the convex part that indicates the position of the insertion hole for the ground electrode is formed in the connection part, the pitch of the ground electrode is changed and the core wire for the ground electrode is mistakenly inserted into another wire. The risk of insertion into the mouth can be reduced, the position of the ground electrode can be easily identified from the recess or protrusion, and the risk of accidentally inserting the core wire of the ground electrode into the wire insertion hole other than for the ground electrode can be reduced. ..

Further, when there is a connecting portion for connecting a cable having no ground electrode, if a concave portion or a convex portion for distinguishing the connecting portion from another connecting portion for connecting the power supply cable is formed in the connecting portion, grounding is possible. It is possible to easily discriminate between the connecting portion having no pole and the connecting portion having the ground electrode.

[Brief description of drawings]

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

FIG. 2 is an explanatory view showing indoor wiring using the wiring device of the above.

FIG. 3 is an explanatory diagram of an internal circuit configuration of the above.

4A to 4C are explanatory diagrams of the internal circuit configuration of different wiring devices.

5A to 5D are a plan view, a side view, a front view and a rear view of the same as above.

6A and 6B are a plan view and a front view showing a structure of a wiring device of another embodiment.

[Explanation of symbols]

1 joint box 3, 4 power cable 8 connection part 13 ₁ , 13 ₂ wire insertion hole 16 core wire 20, 22 recess 21 protrusion

Claims (2)

[Claims] 1. A connection part for connecting a power cable composed of a VVF wire having a ground electrode is provided, and a plurality of electric wire insertion holes for inserting a core wire of the power cable are arranged in a row in a row in the connection part. In a wiring device equipped with a quick-connect terminal for connecting the core wire of the power cable in a quick-connecting manner, the pitch of connecting the wire insertion hole for inserting the core wire of the power cable to be the ground electrode and another wire insertion hole to another wire A wiring device characterized in that a recessed portion or a projected portion that is wider than a continuous pitch of the wire insertion holes and indicates the position of the ground electrode insertion hole is formed in the connection portion. 2. When there is a connecting portion for connecting a cable having no ground electrode, the connecting portion is formed with a concave portion or a convex portion for distinguishing the connecting portion from another connecting portion for connecting another power cable. The wiring device according to claim 1, wherein: