JPH08264209A - Branching device for distribution panel - Google Patents

Abstract

PURPOSE: To simplify the connecting work of a branching device with a wiring cable in the branching device for distribution panel. CONSTITUTION: In a main body case 12, a cable inserting port 17 is formed in a facing portion, and a power cable 50 is capable of inserting into the inside without cutting. Three kinds of terminal fixtures 20, 30, 40 are fixed to the inside, and these fixtures are connected to insulating wires 51-53 of the power cable 50. The terminal fixtures 20, 30, 40 have two facing crimp-style terminals 22, 32, 42 formed at one end of facing connecting pieces 21, 31, 41, and facing branching connection terminals 23, 33, 43 which are bent in a dogleg shape to make narrow in order to receive a terminal blade of a branching plug, formed at the other end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power distribution branching device suitable for an indoor power distribution system in which a power cable is circulated by utilizing a wiring space under a floor.

[0002]

2. Description of the Related Art In recent years, in a tenant building or the like, a so-called free access floor has been provided in which a wiring space for routing an electric power cable is provided between an underfloor slab and a floor so that floor wiring can be freely performed according to the layout of the room. The method is adopted. In this method, a power distribution branch device is provided at an appropriate position of the power cable under the floor, and a branch plug is inserted therein to branch the power supply line.

As a power distribution branching device used here, the one described in Japanese Patent Application Laid-Open No. 4-223079 is conventionally known. As shown in FIG. 9, this is a spring-loaded terminal (not shown) that is connected by inserting the core wire 3a of the power cable 2 into the branch case 1 and connecting it.
And an outlet 4 for connecting a branching plug (not shown). In order to perform wiring using this branching device, the power cable 2 is cut to a length that matches the location where the branching device is installed, and the core wire 3a is exposed from the end of the power cable 2 and inserted into the branching device.

[0004]

However, in the branching device having the above-described structure, in order to connect the power cable 2, the cable 2 is cut to a required size at the construction site, the outer jacket of the end portion is stripped off, and the internal cable 3 is removed. The four or four insulated wires 3 are exposed, and the insulation coating of each insulated wire 3 is stripped off to remove the core wire 3
It is necessary to carry out the troublesome work of exposing each a and exposing each core wire 3a to the branching device. Moreover,
In many cases, it is common to install branch devices intermittently in the underfloor wiring space and connect them with a power cable, so the above connection work should be performed twice for each branch device. It was necessary, and the actual situation was that the manpower and time required for the wiring work at the construction site would be considerable.

The present invention has been made in view of the above circumstances. Therefore, an object of the present invention is to provide a power distribution branching device which can easily perform a connecting work between a branching device and a wiring cable and is excellent in workability. To do.

[0006]

DISCLOSURE OF THE INVENTION A distribution branching device according to the present invention is provided with a branching device case having an electric wire inserting passage for inserting an insulated electric wire of a power cable, and an electric wire inserting passage provided in the branching device case. The present invention is characterized by a pressure contact terminal into which an insulated wire of the power cable is press-fitted, and a branch connection terminal that is provided in the switch case and electrically connected to the pressure contact terminal and connected to a branch plug ( The invention of claim 1). Further, in this case, the pressure contact terminal and the branch connection terminal can be integrally formed from a single metal plate (claim 2).
Invention).

[0007]

When the power cable is connected, the insulated wire is inserted into the wire insertion passage and pressed into the pressure contact terminal without stripping off the insulation coating. As a result, the core wire and the pressure contact terminal are brought into a connected state, and each insulated wire of the power cable is branched and connected to each branch connection terminal.

[0008]

As described above, according to the branch connector of the present invention, the connection work can be performed without stripping off the insulating coating of the insulated wire, so that the excellent effect of simplifying the wiring work can be obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment embodying the present invention will be described below with reference to FIGS.

FIG. 1 shows an example in which a free access floor is constructed by using the power distribution branching device 10 of this embodiment.
Here, as shown in FIGS. 2 and 3, the power cable 50 is composed of, for example, a vinyl captyre cable provided with a jacket 54 surrounding three insulated wires 51 to 53, and each insulated wire 51 to 53 is a core wire. Insulating coating 51a to 53a
It has a well-known structure covered with 1b to 53b.

Now, as shown in FIG. 3, the branch case 11 of the branch device 10 is a flat type main body case 1 which is vertically divided into two parts.
2 and a lid case 13, and by stacking both cases 12 and 13 on top of each other, they are integrated into a flat box shape as shown in FIG. Two on each side of the turnout case 11, 4 in total
An outlet portion 14 is provided at the location, and a branch plug 15 is inserted therein as shown in FIG. Although not shown, the branch plug 15 has a known structure including, for example, three terminal blades, and is connected to a wiring device 16 installed on the floor as shown in FIG.

The body case 12 is formed with cable insertion openings 17 on both left and right sides in FIG. 4, through which the power cable 50 can be introduced into the branch case 11. An electric wire insertion passage 18 for inserting the three insulated electric wires 51 to 53 of the power cable 50 in the left and right in the branch case 11.
Is formed, and thus in this embodiment the power cable 50
The branch case 11 can be penetrated right and left without cutting.

Three kinds of terminal fittings 2 are provided in the main body case 12.
0, 30, 40 are fixed, and these are power cables 50
Are connected to the insulated wires 51 to 53. The terminal fittings 20 will be described in detail below. In the terminal fitting 20, as shown in FIG. 5, two press-connecting terminals 22 are formed on one end side of a connecting piece portion 21 so as to face each other, and a branch plug is formed on the other end side. Branch connection terminals 23, which are bent in a V shape and are narrowed to receive the terminal blades 15, are formed facing each other. The press-connecting terminal 22 has a slit 22a that opens at the top and extends downward.
Is formed, and the insulated wire 51 can be press-fitted therein. The connecting piece portion 21, the press contact terminal 22, and the branch connecting terminal 23 are integrally formed by press-molding one conductive metal plate. Therefore, the press contact terminal 22 and the branch connecting terminal 23 are connected to each other. It is in a state of being electrically connected via 21. Further, as shown in FIG. 6, the terminal fitting 30 includes a connecting piece portion 31 having an elongated strip shape, and a pressure contact terminal 32 similar to the pressure contact terminal 22 of the terminal fitting 20 is formed at the center portion of the connecting piece portion 31. The terminal fittings 2 are also attached to both ends.
Similarly to 0, the branch connection terminal 33 is formed. In this case, of course, the press contact terminal 32 is formed with a slit 32a similar to the slit 22a of the press contact terminal 22 so that the insulated wire 52 can be press-fitted. Furthermore, as shown in FIG. 7, the terminal fitting 40 also has a strip-shaped connecting piece 4
A pressure contact terminal 42 similar to the pressure contact terminal 22 is formed at one end portion of the connector 1, and a branch connection terminal 43 is formed at the other end of the connecting piece portion 41 similarly to the terminal fitting 20. Further, as shown in FIG. 7, the connecting piece portion 41 of the terminal fitting 40 has an intermediate portion bent in a crank shape.

Now, the above three kinds of terminal fittings 20, 30, 4
0 is arranged in the main body case 12 as shown in FIG.
That is, in the region of the right half of the figure in the body case 12, two terminal fittings 20, one terminal fitting 30 and two terminal fittings 40 are provided for the outlet portions 14 at the upper and lower portions of the figure. It is arranged. The two terminal fittings 20 are arranged such that the pressure contact terminals 22 are located in the passage areas of the two insulated electric wires 51 and 53 drawn in the upper and lower stages in the figure, and the branch connection terminals 23 are arranged above and below. It is located in each outlet 14. In addition, the terminal fitting 30 is arranged such that the pressure contact terminal 32 is located in the passage area of the insulated wire 52 drawn in the middle part of the drawing, and the branch connection terminals 33 are located in the upper and lower outlet parts 14, respectively. ing. And
One of the terminal fittings 40 is arranged so that the pressure contact terminal 42 is located in the passage area of the insulated electric wire 51 illustrated in the upper part of the drawing, and the branch connection terminal 33 is located at the lower outlet part 1.
4 and the other terminal fitting 40 is arranged so that the pressure contact terminal 42 is located in the passage area of the insulated wire 53 drawn in the lower part of the figure, and the branch connection terminal 33 is located in the upper outlet part 14. It is located inside. This allows
Three insulated electric wires 51 to 5 in each of the upper and lower outlet parts 14
The three branch connection terminals 33 branched from 3 are arranged side by side, and the arrangement order is the same in the vertical direction. Also, the left half area in the main body case 12 is the same as the right half area described above, and the terminal fitting 2
0, 30, 40 are arranged.

Next, an example of a procedure for wiring using the power distribution branching device 10 having the above-described configuration will be described. This example shows a procedure for factory-manufacturing the power cable 50 to which the power distribution branching device 10 is attached. First, according to the installation plan of the wiring device 16 on the floor, the total length of the power cable 50 used as a trunk line and the position where the distribution branching device 10 is installed are determined, and the power cable 50 is cut in advance to the total length. deep. In the place where the branching device 10 is installed in the power cable 50, the outer cover 54 is stripped off by a dimension about the entire length of the branching device 10 and the three insulated wires 51 to 53 are exposed separately. Then, the lid case 13 of the branch case 11 is opened, and each wire insertion passage 18 of the main body case 12 is opened.
Each of the insulated wires 51 to 53 is housed in.

The insulated wires 51 to 53 are connected to the terminals 2 respectively.
The insulated wires 51 to 53 are strongly pressed from above by a jig, a press, or the like, by placing them on the slit openings of the 0, 30, 40 pressure contact terminals 22, 32, 42. Then, the electric wires 51 to 53 are connected to the slits 2 of the press contact terminals 22, 32, and 42.
2a, 32a, 42a are press-fitted into the core wire 51 so that the edges on both sides of each slit break through the insulating coatings 51b to 53b.
It comes into contact with a to 53a. As a result, the insulated wires 51 to 53 are connected to the terminal fittings 20, 30, and 40, and are branched to the branch connection terminals 23, 33, and 43. Therefore, the main body case 12 is closed and fixed by the lid case 13. As described above, the required power distribution switch 1
Power cable 50 with 0 attached to form a wire harness
Is brought in from the factory to the construction site, and if it is laid at a predetermined position in the underfloor wiring space, wiring work under the floor is completed at once.

As described above, according to this embodiment, it is not necessary to peel off the insulating coatings 51a to 53a of the insulated wires 51 to 53, and the insulated wires 51 to 53 are simply crimped to the pressure contact terminals 22, 32 ,.
The connection work is completed by pressing it against 42. Therefore, the work can be performed quickly. Of course, it is easy to connect all three insulated wires 51 to 53 at the same time depending on the jigs used to press the wires and the ability of the press machine. In that case, more efficient work is possible. Becomes In addition, such branch connection work is
Since it is possible to manufacture the electric power cable 50 in which a plurality of power distribution branch devices 10 are arranged as a harness by completing it in a factory where a large press machine can be used in advance, it is possible to use it at a construction site. The advantage is that the time and effort of the wiring work can be dramatically reduced.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention.

(1) In the above embodiment, an example in which the power distribution branching device 10 is attached to the power cable 50 of a required length to form a factory-produced wire harness is shown. Needless to say, a field construction method may be adopted in which the power cable 50 is cut, the outer jacket 54 at a required location is stripped off, and the power distribution branching device 10 is attached thereto. Even in this case, each insulated wire 5 of the power cable 50
Since the connection work is completed by simply press-fitting the respective electric wires 51-53 into the respective pressure contact terminals 22, 32, 42 without performing the coating stripping work for 1 to 53, there is an effect that the construction efficiency is significantly increased. .

(2) In the above embodiment, the insulated wires 51-5 are used.
3 is press-fitted into the press-contact terminals 22, 32, and 42, and then the cover case 13 of the branch case 11 is closed. However, the present invention is not limited to this, and the cover case is closed with the insulated wire being applied to the press-connect terminals. The electric wires may be collectively press-fitted into the press-contact terminals by applying a pressing force to the lid case.
Further, in this case, if the pressing protrusions that come into contact with the insulated wires 51 to 53 in the wire insertion passage 18 are provided on the back surface side of the lid case 13, the insulated wires 51 to 51 are contacted by the pressing protrusions.
It is also possible to press 53 into the press contact terminal to further speed up the work.

(3) The structure of the terminal fitting 10 is not limited to the above embodiment, and for example, like the terminal fitting 60 shown in FIG. 8, one pressure contact terminal 62 and two branch connection terminals are provided. The integral configuration of 63 and 63 has the advantage that the number of branch circuits can be increased.

(4) In the above embodiment, an example in which a 3-core captyre cable is used is shown. However, the present invention is not limited to this, and a configuration may be used in which the required number of single-core captyres, for example, 3 to 4.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a joint box.

FIG. 3 is a longitudinal sectional view showing the joint box in an exploded state.

FIG. 4 is a cross-sectional view showing the joint box in a completed state.

FIG. 5 is a perspective view of a joint terminal.

FIG. 6 is a perspective view of a joint terminal.

FIG. 7 is a perspective view of a joint terminal.

FIG. 8 is a perspective view showing a modified example of the joint terminal.

FIG. 9 is a perspective view showing a conventional underfloor wiring structure.

[Explanation of symbols]

 11 ... Brancher case 12 ... Main body case 13 ... Lid case 14 ... Outlet part 15 ... Branch plug 17 ... Cable insertion port 18 ... Wire insertion passage 20, 30, 40 ... Terminal metal fittings 22, 32, 42 ... Pressure contact terminal 23, 33 , 43 ... Branch connection terminal 50 ... Power cable 51-53 ... Insulated wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoyuki Ueda 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd. (72) Noriaki Yamano 1-14 Nishisuehiro-cho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (2)

[Claims] 1. A brancher case, which is connected to a power cable for distribution and is for branching from the power cable by inserting a branching plug, comprising a wire insertion passage through which an insulated wire of the power cable is inserted. A press contact terminal provided in the switch case into which the insulated electric wire of the power cable inserted through the electric wire insertion passage is press-fitted; and a press contact terminal provided in the switch case and electrically connected to the press contact terminal. A branching device for power distribution, comprising: a branching connection terminal to which a plug for power supply is connected. 2. The power distribution branching device according to claim 1, wherein the pressure contact terminal and the branch connection terminal are integrally formed from a single metal plate.