JP3013159B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single energizing line which is generally used as a power line, which is insulated and covered.
A two-core or three-core VVF cable in which three or three wires are arranged in parallel and the outer periphery of which is covered with an outer cover is targeted, and another VVF cable is used at the time of wiring such a VVF cable or at the existing wiring already wired. To obtain a branch line by connecting
The present invention relates to a connector suitable for connecting and branching a current-carrying line on the positive electrode side of existing wiring and a current-carrying line on a positive electrode side of a branch line without error.

[0002]

2. Description of the Related Art Conventionally, it is often necessary to obtain a branch line by connecting another two-core or three-core VVF cable to such a two-core or three-core VVF cable. In this case, since it is necessary to distinguish the positive side and the negative side of the core wire when energizing various devices, VVF is generally used.
The color of the interior coating of the cable is a different color that is easy to identify. For example, in a two-core VVF cable, the core wire is formed in two colors, white and black.
Many are 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.

[0003] In such a branch line take-out work, when the main line is a branch line, after turning off the power to eliminate the danger, generally, as shown in FIG. First, the VVF cable 3 on the main line side is cut at a required place, the respective outer coverings 31 are removed, the covering wires on the positive electrode side and the negative side are taken out, and the respective inner coverings 32 are removed. Expose 33. Similarly, for the VVF cable 3 ′ on the branch side,
1 and the inner cover 32 on the positive electrode side and the negative electrode side are respectively removed to expose the core wire 33, and then the positive electrode side core wire 3 of the main wire is removed.
3 and the positive-side core wire 33 of the branch wire are put together, inserted into the metal sleeve 6 provided inside the closed-end insulating cap 61, and pressurized from above by a press tool to deform the metal sleeve 6 under pressure. Then, the core wires on the negative electrode side were connected to each other in the same manner.

[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 connector capable of safely and quickly branching an electric wire in various forms without stripping the inner and outer coatings of the VVF cable as described above. It is the purpose. In particular, the invention provides that the contacts are pushed into the connector body.
Sometimes energized wires with different poles in the same cable,
Separates the energizing line that contacts the contact from the other energizing line to the left and right
Therefore, it is an important object to improve safety and prevent occurrence of short circuit or the like .

[0006]

SUMMARY OF THE INVENTION A connector used for connecting and branching a two-core or three-core VVF cable 3 'for branching from a two-core or three-core VVF cable 3, wherein the metal plate is rich in electrical conductivity. Two or three contacts 1 made of ...
And a main 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 two VVFs are respectively attached to parallel pieces 1a, 1a thereof.
Conducting wires 33, 33 having the same polarity for each cable by cutting the insulating outer cover 31 and the insulating inner cover 32 of the cables 3, 3 '.
Are cut at predetermined intervals D, and the cable cuts the insulating outer cover 31 and enters the space between the adjacent insulating inner coats 32 to divide the cable into right and left parts. Blades 13, 13 are formed near the two cuts 11, 11, respectively, and the main body 2 is formed by a parallel 2 formed at a predetermined interval E through which both VVF cables 3, 3 'are inserted. The main body 2a is provided with two grooves 21 and 22 and is formed so as to be fittable with each other. Are provided, and the width of the two grooves 21 and 22 is substantially the same as the width W on the large diameter side where the energizing wires 33 of the VVF cables 3 and 3 'are juxtaposed. And these two
The interval E between the grooves 21 and 22 and the interval D between the two cut portions 11 and 11 of the contact 1 are formed so as to substantially coincide with each other, and the insertion holes 23 are formed in the respective conducting wires 33 in the VVF cable. The slits are formed so as to be shifted by a horizontal pitch interval.
The connection to be connected in the cable when pushed into 3,3 '
With other current-carrying wires 33 of different polarity arranged in parallel with the electric wire 33
Slightly upward so that it is pressed in the direction to separate
The structure was formed by forming.

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. Is preferred. The cut interval (slit interval) of the cut portion 11 of the contact is determined by pressing the contact 1 against the VVF cable 3 and cooperating with the cutting blade 13 to coat the outer sheath of the cable (skin).
The width is slightly smaller than the thickness of the current-carrying line 33 because the 31 and the inner coating (endothelium) 32 are cut off and the current-carrying line 33 is energized on the inner surface facing the cut portion 11. By doing this,
At the time of this energizing operation, it is preferable that the energizing wire 33 be firmly pressed and clamped from both sides while being plastically deformed by the pressing force.

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.

[0009]

1 to 10 show one embodiment of a connector according to the present invention for a two-core VVF cable, and reference numeral 1 denotes a contact. This contact 1 is rich in electrical conductivity and is used for a three-core VVF cable 3,
A substantially reverse U-shaped side view press-formed brass plate having a hardness higher than 3 ′, and each of the substantially parallel pieces 1a,
1a, an insulating sheath 31 of the two VVF cables 3, 3 ';
Cuts 11 and 11 are formed at a predetermined interval D to cut and cut the insulating inner skin 32 and insert and contact one of the conducting wires 33 in the cable. A recess 12 is provided for partitioning 11. Further, the cutting blades 13, 13 for cutting the cable through the insulating outer cover 31, entering between the adjacent insulating inner coats 32, and dividing the cables into right and left parts are provided with two pieces 1 a, 1 a near the two cut parts 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. , And the energizing wire 33 is clamped while being deformed by press contact from both sides. The cut portions 11, 11 are formed so as to be slightly inclined upward so as to be pressed in a direction in which a current-carrying wire to be connected in the cable is separated from other current-carrying wires 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). Two grooves 21 and 22 for inserting and fitting the VVF cable 3 and the branching VVF cable 3 ′ are formed in parallel at a predetermined interval E. One main body 2a is provided with two insertion holes 23, 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. Further, the cover body 26 is extended outside on an extension line along the groove direction of the main body structure 2a through a flexible connecting band 25 and is foldably connected to a contact insertion surface of the main body structure 2a. ing. 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 substantially the same as the width W of the large diameter (wide side) in which the conducting wires of the VVF cables 3 and 3 'are juxtaposed. And two main body members 2a,
2b, grooves 21 and 2 in folded position with fitting
The facing width of 1, 22, 22 (the sum of the depths of the opposed grooves) is almost the same as the width w on the narrow side of each of the VVF cables 3, 3 ', and the cables can be sandwiched without gaps. It is formed to a width as small as possible. The interval between these two grooves 21 and 22, that is, the interval E between the center lines is formed to be substantially equal to the interval between the two cut portions 11, 11, that is, the interval D between the center lines of the contact 1. is there.
Further, two insertion holes 23 for inserting the contact 1 are provided.
As shown in FIG. 1, the contact 1 has a shape along the planar shape of the contact 1 and is formed in a size suitable for inserting and temporarily holding the lower half of the contact 1. This 2
The two insertion holes 23 are two conducting wires 3 in the VVF cable.
The grooves are formed so as to be displaced in the width direction of the groove by an interval of the horizontal pitch of 3.

The contact 1 is formed with directivity in the insertion direction so that the contact 1 can always be inserted into the insertion hole 23 only in a posture oriented in a predetermined direction. In the present embodiment, the form of the contact 1 and the insertion hole 23 have a directivity in the insertion direction by being formed in a trapezoid such that one end side is gradually widened in a plan view shape.
This ensures that the contact cutting blade 13 is always in the correct position,
That is, as shown in FIG. 9 and FIG. 10, the VVF cable can be disposed so as to be inserted between the right and left conducting wires 33, 33 so as to be located at a position where the cable is divided in the width direction. The branch connection by insertion can be reliably performed, and occurrence of a connection failure or the like can be prevented. The means for providing directivity in the direction of contact insertion is not limited to the means described above. For example, as shown by (a) and (b) in FIG.
a may be formed, and a convex portion corresponding to this may be provided on the outer surface of the contact, or another method may be used.

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.

VVs are provided at both ends of the grooves 21 and 22.
Receiving grooves 29 are formed to removably receive a shielding wall 28 for receiving the cut end surface of the F cable. The shielding wall 28 detachably mounted in the receiving groove 29 is formed of a transparent insulating resin material that can transmit the end face of the VVF cable from the outside. Further, in the present embodiment, the shielding wall 28 is formed of a single elliptical shape in which the grooves 21 and 21 or the grooves 22 and 22 are vertically aligned. , 29.

An example of use in the case where only one branch line is branched and extended only in one direction from the VVF cable 3 on the branch line side by using the connector configured as described above will be described below.
First, as shown in FIG. 2, a shielding wall 28 is mounted in a receiving groove 29 at one end of the grooves 22 on the side through which the VVF cable 3 'on the branch side is inserted. Then, the two-core VVF cable 3 on the already wired side (branch line side / branched line side) is covered,
As shown in FIG. 4, the VVF cable 3 ′ for branching is inserted into the groove 21 of one of the main bodies 2 a and 2 b (here, 2 b), and the VVF cable 3 ′ for branching is inserted into the adjacent groove 22 by the cut end face. Select the confirmed positive or negative line in the direction that matches the positive or negative line on the main line,
The cut end face is inserted against the shield plate 28 and then inserted into the other structure (here, 2) as shown in FIG.
a) is folded from the folding part 24, put on it and pressed, and the engaging claw piece 20b and the engaging hole 20a are mutually fitted on the other side. In this structure fitting state,
The branch line side cable 3 'may be inserted from the opening.

Next, as shown in FIG.
The upper surface of the contact 1 is pressed by an appropriate pressing tool A and pushed into the contact insertion hole 23 so that the entire contact 1 is buried as shown in FIG. 7, 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.

FIG. 9 and FIG.
As shown in FIG. 0, the outer skin 31 and inner skin 32 of the cables 3 and 3 ′ are cut inside the connector body 2 to make electrical contact with the current-carrying wires 33 on the same pole side of both cables, and at the same time, the As a result, the current-carrying line where the cable comes into contact with the contact 1 and the other current-carrying lines are divided into right and left. At this time,
Each of the cuts 11, 11 is a respective cable 3,
Since the 3 'right and left conducting wires 33 are formed so as to be inclined in the direction of separating the left and right conducting wires 33, the conducting wires having different poles in the same cable, that is, the conducting wire that contacts the contact and the other conducting wire are different from each other. Can be separated from each other to improve safety. In this way, the branch line is branched from the existing wiring or the main line. In addition, the connector together with the cables 3 and 3 can be hung on a building or a building by the hook 35 provided on one of the covers 26, which is convenient.

Since the two insertion holes 23 are formed so as to be shifted laterally by an interval of the horizontal pitch of the two conducting wires 33 in the VVF cable, the respective insertion holes 2 are formed.
The left and right VVs are determined by the contacts 1 inserted in 3.
The same-polarity conducting wires of the F cable can be connected to each other.

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.

In the above embodiment, a connector used for a two-core VVF cable has been described. However, as shown in FIG. It is also possible to configure as a connector for a cable. In this case, it is needless to say that other configurations are the same as those in the above-described embodiment.

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. For example, in the above-described embodiment, the half-shaped components 2a and 2b of the main body 1 are integrally connected in a foldable manner so as to be foldable by the folding unit 24. However, each of the components 2a and 2b is formed separately. Of course, it is also possible to configure so as to fit and connect with each other. In addition, the present invention has the above constitutional requirements, achieves the object of the present invention, and can be appropriately modified and implemented within a range having the following effects.

[0023]

As described above, the present invention is constructed as described above, so that the operation of simply press-fitting the contacts into the VVF cable does not interrupt the energization even if the branch line is a branch line. The branch line can be branched, and the special structure of the contact separates the left and right energizing lines with different poles in the same cable to the left and right to enhance safety. And can be provided at a low cost.

In particular, according to the present invention, the notch is formed by pushing the cable into the cable.
When the cable is
Press in the direction in which the different conducting wire 33 separates
As the upper part is slightly inclined,
Cable when the connector is pushed into the connector body.
Conductors with different poles inside, i.e.
The electric wire and other energized wires are separated from each other to improve safety,
There is a remarkable effect that occurrence of a short circuit or the like can be prevented beforehand.

[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.

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 of the inner surface side of the main body of FIG. 1 with a two-core VVF cable inserted into a groove.

FIG. 5 is a perspective view showing a state in which the left and right main body components are turned back and a cable is fitted.

FIG. 6 is a perspective view showing a process of press-fitting a contact with a press-fitting tool in the state of FIG.

FIG. 7 is a perspective view showing a state where a contact is press-fitted.

FIG. 8 is a perspective view showing a state in which a cable is completed with a cover body covered.

FIG. 9 is an enlarged sectional view showing a contact insertion state.

FIG. 10 is an internal perspective view showing a contact insertion state.

FIG. 11 is an explanatory view showing another embodiment of the present invention.

FIG. 12 is a perspective view showing another embodiment of the connector of the present invention.

FIG. 13 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 3 Hot wire side VVF cable 3 'Branch side VVF cable 31 Insulating sheath 32 Insulation endothelium 33 Conducting wire D Spacing between cuts E Groove spacing W Width of parallel conducting wire w Width of narrow conducting wire

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-130409 (JP, A) JP-A-51-140187 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 4/24

Claims (1)

(57) [Claims] 1. A connector used for connecting and branching a 2-core or 3-core VVF cable (3 ') for branching from a 2-core or 3-core VVF cable (3), wherein the metal plate is rich in electrical conductivity. , And a main body (2) made of a synthetic resin rich in insulation, and the contact (1) has a substantially inverted U-shaped cross-sectional shape as viewed from the side,
The two parallel pieces (1a) and (1a) should be cut by cutting the insulating sheath (31) and the insulating inner sheath (32) of the two VVF cables (3) and (3 '). Two notches (11) and (11) are formed at a predetermined interval (D) to be in contact with the conducting wires (33) and (33), respectively, and are cut adjacent to the insulation sheath (31) of the cable. The cutting blades (13) and (13) which penetrate between the insulating endothelium (32) and (32) and divide each of them into right and left are the two cut portions (11),
(11) are formed in the vicinity of the main body (2)
Is a predetermined distance between both VVF cables (3) and (3 ').
(E) Two parallel main grooves (2a) and (2b) each having two parallel grooves (21) and (22) and formed so as to be fittable with each other. The main body (2a) is provided with a plurality of insertion holes (23) for inserting the contacts (1) and the width of the two grooves (21) and (22). Are formed to be approximately the same width as the width (W) on the large diameter side where the energizing wires (33) of the VVF cables (3) and (3 ') are juxtaposed, and these two grooves (21), ( 22) spacing (E) and said contact (1)
Are formed at intervals substantially matching the interval (D) between the two cut portions (11), (11), and the insertion holes (23) are formed at the same pitch as the horizontal pitch of the current-carrying wires (33) in the VVF cable. apart by the is formed by shifting the position in the width direction of the groove, further said notches
When (11), (11) is pushed into cable (3), (3 ')
Polarity parallel to the conducting wire (33) to be connected in the cable
Press in the direction to separate it from other conducting wires (33) of different
The connector is formed with a slightly upward slope .