JPH10162916A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely and speedily perform wire diverging work without stripping a cable cover by making a horizontal width of two grooves formed at a main body equal to a width of a larger diameter side of a cable and aligning an interval between the grooves with an interval of a cutout of a contact. SOLUTION: A three-core VVF cable on an existing wire is connected to a groove 21 of 2b, one of the main body structures 2a and 2b, and the diverging three-core VVF cable is inserted into an adjacent groove 22. The other structure 2a is folded, covered thereon, and pressed, and an engagement claw piece 20b and engage-in holes are engaged with each other. A top end face of a contact 1 is pressed by a pressing fixture A and pushed into a contact insertion hole 23, and a cover body 26 is bent from a coupling band 25 to cover the contact 1. The pressed contact 1 comes into electric contact with a conducting wire on the same electrode side of both cables by cutting inner and outer skins of the cable inside of a connector main body 2, and at the same time is cut between a conducting wire in which the cable is brought into contact with the contact 1 by a cutting blade 13 and the other two conducting wires.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a single energizing line generally used as a power line is insulated and covered.
VVF which is arranged in parallel and whose outer periphery is covered with a skin
When a three-core VVF cable is wired or a different VVF cable is connected to an already-wired existing wiring to obtain a branch line, a current-carrying wire on the positive side of the existing wiring and a positive electrode of the branch line are used. The present invention relates to a connector suitable for connecting and branching the current-carrying line without error.

[0002]

2. Description of the Related Art Conventionally, it is often necessary to obtain a branch line by connecting another three-core VVF cable to such a three-core VVF cable. In this case, since it is necessary to separate the positive and negative sides of the core wire when energizing various devices, the color of the interior coating of the VVF cable is generally a different color that is easily identifiable. For example, 3 core V
In many VF cables, the color of the interior coating is formed in three colors of red, white, and black. When a branch line is taken out from the main line, core lines of the same color having the same polarity as the main line and the branch line are connected to each other.

In such a branch line removal work, when the main line is a branch line, the power is turned off in order to eliminate the danger, and generally, as shown in FIG. ,
First, the VVF cable 3 on the main line side is cut at a required location, the respective outer coverings 31 are removed, the covering wire on the positive electrode side and the covering wire on the negative electrode side are respectively taken out, and the respective inner coverings 32 are removed and the core wire 33 is removed. To expose. Similarly, for the VVF cable 3 ′ on the branch side,
After the inner and outer coverings 32 on the positive electrode side and the negative electrode side are removed to expose the core wire 33, the positive core wire 33 of the main wire and the positive core wire 33 of the branch wire are put together and the closed end insulating cap 6 is removed.
1 is inserted into the metal sleeve 6 inside the
The metal sleeve 6 was pressurized and deformed by pressure from above, and pressure-bonded and connected. Similarly, the respective core wires on the negative electrode side were connected.

[0004]

In such a means,
If the main line, which is the branch line, is a branch line, the power must be turned off before the branching work because of the necessity of electric shock prevention. Since it is very troublesome, there is a problem that the construction time is long and the working efficiency is poor.

Accordingly, the present invention provides a three-core VV as described above.
It is an object of the present invention to provide a connector that can safely and quickly perform a branching operation of an electric wire without peeling a coating inside and outside of an F cable.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, in the connector of the present invention, the three-core VVF cable 3
A connector used for connecting and branching the core VVF cable 3 ', comprising three contacts 1 made of a metal plate having a high electrical conductivity and a main body 2 made of a synthetic resin having a high insulating property; The contact 1 has a substantially inverted U-shaped cross section viewed from the side, and the respective pieces 1a, 1a are respectively provided with an insulating outer cover 31 and an insulating inner cover 32 of the VVF cables 3, 3 '.
And conducting wires 3 with the same polarity for each cable
3, 33 are formed at a predetermined distance D and contact with the insulating sheath 3 of the cable.
1, cutting blades 13 are formed in the vicinity of the two cut portions 11, 11 so as to enter between the adjacent insulating endotheliums 32, and divide them into right and left. Two parallel grooves 2 formed at a predetermined interval E through which both VVF cables 3, 3 'are inserted.
1 and 22 and two halved main body components 2 that are foldably connected by a fold 24 on one side.
a body 2a, and one body body 2a is provided with three insertion holes 23 for inserting the contacts 1 and a cover body 26 foldably connected from the body body. The width of the grooves 21 and 22 is equal to the VV.
Each of the two grooves 2 is formed to have substantially the same width as the width W on the large-diameter side where the conducting wires 33 of the F cables 3 and 3 ′ are juxtaposed.
1, 2 and the interval D between the two cut portions 11, 11 of the contact 1 are formed so as to substantially coincide with each other.
The three insertion holes 23 are formed so as to be shifted from each other in the width direction of the groove by an interval of the pitch of the conducting wires 33 in the three-core VVF cable.

The two grooves 21 and 22 are formed to penetrate the entire width of the main body components 2a and 2b, respectively, and the three-core VVF cable 3 'on the branch side is projected from both sides of the insertion groove 22. Each of the cables 3 ′ protruding on both sides may be configured as a branch line to obtain two branch lines. The groove 22 for inserting the VVF cable 3 ′ on the branch side is provided with a shielding wall 28 at one end thereof. It is also possible to obtain only one branch line by applying the cut end of the VVF cable 3 'on the branch side to the shielding wall 28 and protruding only in one direction. .

The contact 1 is made of a material which is higher in hardness and superior in conductivity than soft copper used for the conducting wire of the VVF cable 3, such as a hard copper alloy plate having high hardness. preferable. The cut interval (slit interval) of the cut portion 11 of the contact is
Is pressed against the VVF cable 3,
Coating outer sheath (outer sheath) 31 of cable in cooperation with cutting blade 13
And the inner coating (endothelium) 32, and the cut portion 11
The width is slightly smaller than the thickness of the energizing line 33 because the energizing line 33 is energized with the energizing line 33 on the opposite inner surface. In this manner, it is preferable that the energizing wire 33 be firmly pressed and clamped from both sides while plastically deforming the energizing wire 33 by the pressing force during the energizing operation.

Further, the thickness (plate thickness) of the contact 1 and the interval between the cuts 11 are set such that the contact area is equal to or larger than the cross-sectional area of the conducting wire 33 in the state of contact with the conducting wire 33. It is good to keep.

[0010]

1 to 7 show an embodiment of a connector according to the present invention, and reference numeral 1 denotes a contact. This contact 1 is rich in electrical conductivity and
A substantially reverse U-shaped side view press-formed brass plate having a higher hardness than the core VVF cables 3, 3 ', and the insulated sheaths of the two VVF cables 3, 3' are respectively attached to the respective pieces 1a, 1a. 31 and the insulating inner skin 32, and two notches 11, which are inserted into and contact one of the conducting wires 33 in the cable,
11 are formed at a predetermined interval D, and a recess 12 is provided at an intermediate portion for separating the cuts 11. Further, the cutting blades 13, 13 which cut the insulating outer sheath 31 of the cable, enter between the adjacent insulating inner sheaths 32, and divide each of them into right and left are provided with two pieces 1a, 1a in the vicinity of the respective cut portions 11, 11. Are formed along the direction connecting. The lower ends of the cuts 11, 11 are formed in a V-shape like a cutting blade. The cutting blade cuts the outer skin 31 and the inner skin 32 of the VVF cable 3, 3 ', while the inner conducting wire 33 is cut. Reaches, the conducting wire 33
Are pressed and deformed from both sides while being pressed. The cut portions 11, 11 are formed to be slightly upwardly inclined so as to be pressed in a direction in which a current-carrying wire to be connected in the cable is separated from another current-carrying wire when pushed into the cable. The contact 1 has an insulating resin plate 14 attached to the upper surface of the connection bottom portion 12.

The thickness of the contact 1 and the notch 1
The width of 1 is set by calculation such that the area of the portion in contact with the energizing wires 3 and 3 'by pressure welding is substantially equal to or larger than the cross-sectional area of the energizing wire. Now, looking at two types of diameters of the conducting wire to be used, 1.6 mm and 2.0 mm, when the conducting wire diameter is 1.6 mm, the contact 1
Is 0.5 mm, the width of the cut portion 11 may be about 1.2 mm. If the thickness of the contact 1 is 0.6 mm when the diameter of the conducting wire is 2.0 mm, the width of the cut portion 11 may be about 1.5 mm.

The connector body 2 is integrally formed of a resin material such as nylon, polyethylene or polypropylene. The connector main body 2 is composed of two main body components 2a and 2b of substantially the same shape and a half body, and a cover body 26. Each of the main body components 2a and 2b is provided on the branch line side (branched side). 3 core VVF cable 3 and 3 core V for branching
Two grooves 2 for inserting and fitting with the VF cable 3 '
1 and 22 are formed in parallel at a predetermined interval E. One main body 2a is provided with three insertion holes 23 for inserting the contacts 1 respectively, and is connected to the other body 2b by a foldable portion 24 on one side so as to be freely foldable. These main body components 2a, 2b are structured so as to be fitted to each other at the free end side through an engagement piece 20b and an engagement hole 20a. The cover 26 extends outside the extension of the main body 2a along the groove direction through the flexible connecting band 25.
Is foldably connected to the contact insertion surface of the contact. The cover body 26 is provided with engaging claws 27 that engage with engaging holes 27a provided on the side surface of the main body component 2a. Further, a hook portion 35 for hooking the connector is provided on the main body 2b.

The width of each of the grooves 21 and 22 is the same as that of the three cores VV.
Each of the two main body components is formed to have a width substantially equal to the width W on the large diameter side (wide side) of the F cables 3 and 3 ′ arranged side by side, so that the cable can be inserted without a gap. The facing width (the sum of the depths of the opposed grooves) of the grooves 21, 21, 22, 22 in the folded posture in which the 2a, 2b are fitted to each other is the width w on the narrow side of each of the VVF cables 3, 3 '. , Respectively, and are formed to have a width that allows the cable to be sandwiched without any gap. The space between these two grooves 21 and 22, that is, the space E between the center lines,
Are formed at intervals between the two cut portions 11 of the contact 1, that is, at intervals substantially matching the interval D between the center lines. Also, three insertion holes 2 for inserting the contacts 1
Are formed in a size suitable for inserting and temporarily holding the lower half of the contact 1 as shown in FIG. The three insertion holes 23 are formed so as to be shifted in the width direction of the groove by an interval of a horizontal pitch of the three conducting wires 33 in the VVF cable.

The folded portion 24 of the two main body components 2a, 2b is formed in a W-shape in side view, and the lower bottom portion thereof is formed thin. Thus, contact 1 is shown in FIG.
As can be seen in FIG.
And temporarily held in the respective insertion holes 23, 23.

The connector in this embodiment has a
A connector for obtaining only one branch line from the VF cable 3, wherein the configuration is such that a shielding wall for closing the groove at one end of the grooves 22, 22 on the side through which the branch-side VVF cable 3 ′ is inserted. 28, 28, and the VV on the branch side
The cut end of the F cable 3 'is applied to the shielding wall 28 so that it can protrude only in one direction. After the connector is attached to the cable 3 on the branch line as described above, the cable 3 'on the branch side is
The tip is a shield wall 2 from the opening made to the side by
By pushing in until it comes into contact with 8, the two cables 3, 3 'can be inserted into the connector in parallel.

In order to branch an electric wire using the connector constructed as described above, the three-core VVF cable 3 on the wired side (branch side / branched line side) is covered with the three-core VVF cable 3 covered.
As shown in FIG. 3, one of the main bodies 2a and 2b (here, 2b) is inserted into the groove 21 so that the cross section is in the horizontal posture, and the three cores for branching are inserted into the adjacent groove 22. The line on the positive or negative side of the VVF cable 3 ′, which has been confirmed by the cut end face, is selected in a direction that matches the positive or negative line on the main line side, and the cut end face is connected to the shielding plate 2.
3, and then, as shown in FIG. 3, the other structure (here, 2a) is folded from the folded portion 24, placed over and pressed, and engaged with the engaging claw piece 20b on the other side. The insertion holes 20a are fitted to each other.
In this structure fitting state, the branch line side cable 3 ′
May be inserted through the opening.

Next, as shown in FIG.
5 is pressed by a suitable pressing tool A so as to push the entire contact 1 into the contact insertion hole 23 as shown in FIG. 5, and finally, as shown in FIG. 25, the outer surface of the contact 1 is covered, and the engaging claws 27 formed at the respective corners are engaged and connected to the engaging holes 27a formed in the main body constituting body 2a.

As shown in FIG. 7, the pressurized contact 1 cuts the outer cover 31 and the inner cover 32 of the cables 3 and 3 'inside the connector body 2, and supplies the current-carrying wires 33 and 33 on the same pole side of both cables. Electrical contact with the cutting blade 1
By 3, the cable is divided right and left from between the current-carrying wire contacting the contact 1 and the other two current-carrying wires. At this time,
Each of the cuts 11, 11 is a respective cable 3,
The 3 ′ left and right energizing lines 33 are formed so as to be inclined in a direction that separates the left and right energizing lines. The safety can be improved by separating the energizing wire from the left and right. In this way, the branch line is branched from the existing wiring or the main line. Also, one of the cover members 2
The hook body 35 provided on the connector 6 allows the connector together with the cables 3 and 3 to be hung on a building or a building, which is convenient.

Since the three insertion holes 23 are formed so as to be shifted laterally by the horizontal pitch of the three conducting wires 33 in the VVF cable, the respective insertion holes 2 are formed.
3 can connect the same-polarity conducting wires of the left and right three-core VVF cables.

In the present invention, the inverted U-shaped contact 1 can also be manufactured by coating a metal plate of a contact forming material with an insulating layer in advance, and then forming the same into a predetermined shape. . The metal plate used as a material is the VVF cable 3, 3 ′.
Any material may be used as long as it is higher in hardness and relatively lower in electric resistance than the current-carrying wire, that is, a material excellent in conductivity, and may be a material other than a copper alloy plate.

Although the embodiments and modifications which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited only to the structures of these embodiments and modifications, and the present invention is not limited thereto. The present invention has the structural requirements, achieves the object of the present invention, and can be appropriately modified and implemented within a range having the following effects.

[0022]

Since the present invention is constructed as described above, it is possible to cut off the electric current even if the branch line is a bundled line, by simply pressing the contact into the 3-core VVF cable. And the special structure of the notch of the contact allows the left and right conducting wires with different poles in the same cable to be separated from each other to improve safety. There is a remarkable effect that it can be provided at low cost because the body has a simple structure of an integrally molded product.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a connector according to the present invention, and is an entire perspective view of a back side of a main body before a contact is inserted.

FIG. 2 is a perspective view of the inner surface side of the main body of FIG. 1 with a three-core VVF cable inserted into a groove.

FIG. 3 is a perspective view of a rear surface side of the main body, showing a state where only a tip portion of a contact is temporarily inserted.

FIG. 4 is a perspective view showing a process of press-fitting a contact with a press-fitting tool in a state where the left and right main body components are folded and the cable is fitted.

FIG. 5 is a perspective view showing a state where a contact is press-fitted.

FIG. 6 is a perspective view showing a state in which a cable is completed with a cover body covered.

FIG. 7 is an enlarged sectional view showing a contact insertion state.

FIG. 8 is a perspective view showing an example of conventional means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 11 Cut part 13 Cutting blade 2 Main body 2a Main body structure 2b Main body structure 20a Fitting part 20b Fitting part 21 Groove 22 Groove 23 Contact insertion hole 24 Folding part 25 Folding part 26 Cover body 27 Hook part 28 Shielding plate 29 Overlay 3 Hot-side VVF cable 3 'Branch-side VVF cable 31 Insulation sheath 32 Insulation endothelium 33 Conducting line D Notch spacing E Groove spacing W Width of parallel conducting wires w Width of narrow conducting wire

Claims (1)

[Claims] 1. A three-core VVF cable (3) for branching from a three-core VVF cable (3).
A connector used for connecting and branching a core VVF cable (3 '), comprising three contacts (1) made of a metal plate rich in electrical conductivity and a body (2) made of a synthetic resin rich in insulation. )
The contact (1) has a substantially inverted U-shaped cross section as viewed from the side, and the respective pieces (1a) and (1a) are insulated from the two VVF cables (3) and (3 ′). Two notches (11), (11) that cut the outer sheath (31) and the insulating inner skin (32) and contact the current-carrying wires (33), (33) that have the same polarity for each cable
A cutting blade (13) formed at a predetermined interval (D), cuts an insulating sheath (31) of a cable, enters between adjacent insulating endothelia (32) and (32), and divides each of them into right and left. , (13) are formed in the vicinity of the two cuts (11), (11), respectively, and the main body (2) is connected to both VVF cables (3), (3 ').
Are formed at a predetermined interval (E).
It is constituted by two half-structured main body components (2a) and (2b) which are provided with two grooves (21) and (22) and are foldably connected at one fold portion (24), One main body (2
a) has three insertion holes (2
And a cover body (26) foldably connected to the main body structure, and the two grooves (21) and (22) have a width equal to the width of the two VVF cables (3) and (3 '). ) Are formed to have substantially the same width as the width (W) on the large diameter side where the conducting wires (33) are juxtaposed. The interval (E) between these two grooves (21) and (22) and the contact (1) ) 2
The notches (11), (11) are formed at intervals substantially matching the interval (D), and the three insertion holes (23) are arranged beside the three conducting wires (33) in the VVF cable. A connector formed by shifting the position in the width direction of the groove by a pitch interval.