JP2913000B1 - connector - Google Patents

Abstract

An object of the present invention is to provide a connector in which a branching operation of an electric wire can be performed safely and quickly without peeling a coating inside and outside of a VVF cable. SOLUTION: The contact 1 is made up of a metal plate contact 1 and an insulating main body 2, and the contact 1 should cut the insulating outer cover 31 and the insulating inner cover 32 of the VVF cable 3, 3 'and connect each cable. Two notches 11, 11 contacting the conducting wires 33, 33 respectively, and two separating walls 13 a, 13 a located on one side of each of the notches 11 and 11 to divide the cable left and right.
It has. Further, the main body 2 is provided with grooves 21 and 22 for inserting a VVF cable, and is constituted by two half-split main body structures 2a and 2b that can be fitted to each other. Are provided with a plurality of insertion holes 23 for inserting. Steps 15, 15 having no blades are provided at the lower ends of the separation walls 13a, 13a, and a part of the insulating outer skin 31 is pressed during pressure welding so that the left and right inner skins 32,
32, so that the insulation between the conducting wires 33, 33 is further enhanced.

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. And a connector suitable for obtaining a branch line.

[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.

[0003] In such a branch line taking-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 location, the respective insulating sheaths 31 are removed, the coated wire on the positive electrode side and the coated wire on the negative electrode side are respectively taken out, and the respective insulating inner sheaths 32 are removed to remove the core wire. Expose 33.
Similarly, for the VVF cable 3 'on the branch side, the insulating sheath 31 and the insulating inner skin 32 on the positive electrode side and the negative electrode side are respectively removed to expose the core wire 33, and then the positive core wire 33 of the main wire and the branch wire are removed. The positive-electrode side core wire 33 is put together, inserted into the metal sleeve 6 provided inside the closed end insulating cap 61, and pressurized from above with a pressing tool to deform the metal sleeve 6 under pressure and press-fit. Similarly, the respective core wires on the negative electrode side were connected to each other.

[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 present invention makes it possible to reliably separate the positive-side covered wire and the negative-side covered wire in the insulating sheath when the contact is inserted into the connector body, and to provide a high degree of separation between these covered wires. A main object of the present invention is to provide a connector capable of securing insulation and preventing the occurrence of heat generation and a short circuit accident.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, the connector of the present invention is a connector used for connecting and branching a 2-core or 3-core VVF cable 3 ′ for branching from the 2-core or 3-core VVF cable 3, and is a highly conductive metal. And two or three plate-shaped contacts 1 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, and the two VVs are respectively attached to its parallel side pieces 1a, 1a.
The current-carrying wires 33, 3 having the same polarity of each cable by cutting the insulation sheath 31 and insulation sheath 32 of the F cables 3, 3 '.
2 are formed at a predetermined interval D, and cut into the insulating sheath 31 of the cable and enter between the adjacent insulating inner sheaths 32 to divide each of them into right and left. Separation walls 13a, 13a are formed on one side of each of the two cuts 11, 11, respectively.

The main body 2 is provided with two parallel grooves 21 and 22 formed at a predetermined interval E through which the two VVF cables 3 and 3 'are inserted, and is formed so as to be fittable with each other. The main body 2a is provided with a plurality of insertion holes 23 into which the contacts 1 are inserted. Further, the separation walls 13a, 13a are provided in the main body 2a. It is assumed that downward step portions 15, 15 are formed at the lower end portion in a state in which they are slightly retracted from the lower ends of the side pieces 1a, 1a.

As another configuration, the separation walls 13a, 1
3a is a position configuration in which the side pieces 1a, 1a protrude outward from the terminal edges 16, 16 on the separation wall forming side,
It is assumed that the lower end is formed as downward stepped portions 15, 15 for pressing and pushing the outer skin inward.

[0010] As still another configuration, the step 1
5 and 15 are arranged so as to protrude outward from the terminal edges 16 and 16 of the side pieces 1a and 1a.
The configuration is such that the positions of 5 and 15 are formed to retreat upward from the lower ends of the side pieces 1a and 1a.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The contact 1 has an insertion hole 23.
The contact 1 and the insertion hole 23 are preferably set in advance to have a shape that is asymmetric in the longitudinal direction so that the contact 1 and the insertion hole 23 can be inserted only in a predetermined 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. 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 edge 13 to cut the insulating outer cover 31 and the insulating inner coat 32 of the cable. Since the energization line 33 is energized on the inner surface facing the portion 11, the width is preferably slightly smaller than the thickness of the energization line 33. 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.

[0014]

1 to 13 show a connector according to the present invention.
FIG. 6 is a view showing an embodiment for a VF cable,
Reference numeral 1 indicates a contact. The contact 1 is a substantially inverted U-shaped side view formed by press-molding a brass plate having high electrical conductivity and a hardness higher than the hardness of the VVF cable 3, 3 'to be used. , 1a are provided with an insulating outer cover 31 and an insulating inner cover 3 of both VVF cables 3, 3 '.
2 are cut at predetermined intervals D, and two cuts 11, 11 that are inserted into and contact one of the energizing wires 33 in the cable are formed at a predetermined interval D.
There is provided a concave portion 12 for dividing 1. In addition, the insulation sheath 31 of the cable is cut and the adjacent insulation endothelium 32, 32 is cut.
Between the separation walls 13a,
13a is located on one side of each of the two cuts 11, 11 and is formed along a direction orthogonal to the substantially parallel side pieces 1a, 1a.

The lower ends of the cuts 11, 11 are formed in a V-shape like a cutting edge. The V-shaped blade cuts the outer skin 31 and inner skin 32 of the VVF cable 3, 3 ' The current reaches the inner conducting wire 33, and the conducting wire 33 is sandwiched while being deformed by press contact from both sides.
As shown in the figure, the cut portions 11 are formed so as to be slightly inclined so as to be pressed in a direction to separate the current-carrying wire to be connected from the other current-carrying wires when the cable is pushed into the cable. It is.

As shown in detail in FIGS. 12 and 13, the separating walls 13a, 13a are provided with the two cut portions 1a.
Left and right side pieces 1a, 1 on one side of each of 1, 1
a are bent toward the center so as to approach each other from a, and cut edges 13, 13 and stepped portions 15, which are slightly inclined and extend to the outside thereof, are formed at the lower ends thereof. The separation wall 13a here may be formed by bending only one side of the side piece 1a. The upper surface of the contact 1 is insulated and covered with an insulating resin plate 14.

That is, the cutting edges 13, 13 are notched 1
Steps 15, 15 formed on the side close to 1, 11 and having a downward slope projecting outward from the portion following these cutting edges.
15. The step portion 15 is formed in a state where it is slightly retracted from a lower end portion of the side pieces 1a, 1a (a portion separated upward in the figure). By forming in this manner, the lower ends of the side pieces 1a, 1a are
Contact 1 before cable that enters before 1
In the state where the press-fitting position is determined, the cutting edge 13 enters the outer skin 31 and then the steps 15, 15 abut on the outer skin with the outer skin 31 pushed in, and shift downward. In this way, the outer sheath 31 of the cable is pushed between the insulating inner linings 32 by the steps 15, 15, and as shown in FIG. So that it can be enhanced.

Further, the contact 1 shown in FIG.
As can be seen in FIGS.
a, 1a, the terminal edges 16, 1 on the side where the step is formed
It is formed so as to protrude outwardly beyond 6.
For this reason, it is more effective to forcibly push down the outer skin portion whose both sides are not cut by the side pieces 1a, 1a. In such a case, the cutting edges 13, 13 are not necessarily required, and the steps 15, 15 need not be inclined.

The thickness of the contact 1 and the cut 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. In the above case, the length (projection length) of the step 15 is 0.8 to 1 mm.
The degree is preferred.

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) side of the VVF cables 3 and 3 'in which the conducting wires 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 the extent possible. These two
The interval between the grooves 21 and 22, that is, the interval E between the center lines is formed to be substantially the same as the interval between the two cut portions 11, 11, that is, the interval D between the center lines of the contact 1. Also, two insertion holes 23 for inserting the contact 1,
As shown in FIG. 1, 23 has a shape along the plane shape of the contact 1 and is formed in a size suitable for inserting and temporarily holding the lower half of the contact 1. The two insertion holes 23 are formed so as to be displaced in the width direction of the groove by an interval of a horizontal pitch between the two conducting wires 33 in the VVF cable.

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 cutting edge 13 of the contact is always in the correct position,
That is, as shown in FIG. 9 and FIG. 11, 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, a concave or convex portion may be formed at a part of the periphery of the insertion hole 23 such as a keyhole, and a convex or concave portion matching the concave or convex portion may be formed. 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 and 2b is formed in a W-shape when viewed from the side, 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 preferably formed of a transparent insulating resin material that allows the end face of the VVF cable to be transmitted from 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 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 body structures 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 folded portion 24, placed on the folded portion 24 and pressed, and the engaging piece 20b and the engaging hole 20a are fitted to each other on the other side. In this structure fitting state, the cable 3 'on the branch line side 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. 1, the outer sheath 31 and inner skin 32 of the cables 3 and 3 ′ are cut inside the connector body 2 so as to be in electrical contact with the current-carrying wires 33, 33 on the same pole side of both cables, 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.

Further, 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 above embodiment, the connector used for the two-core VVF cable has been described. However, the three-core connector shown in FIG. Fig. 4 shows an embodiment for forming a connector for a VVF cable. In this case, regarding other configurations, the cable insertion grooves 21 and 22 are 3
Needless to say, the size is in accordance with the outer shape of the core VVF cable, and the other points are the same as those in the above embodiment.

Although the embodiments and modifications that are considered representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments and modifications. For example, in the above embodiment, the half-structure members 2a, 2b
Has a structure in which the components 2a and 2b are integrally connected so as to be freely foldable by the foldable portion 24. However, it is a matter of course that the components 2a and 2b can be formed separately and fitted and connected to 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.

[0031]

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. There is an effect that the branch line can be easily and surely and safely branched.

Further, according to the present invention, since a downward step is formed at the lower end of the separation wall formed on one side of each of the cut portions, in a state in which it is slightly retracted from the lower end of the side piece. With the press-fitting of the contacts, the separating wall enters between the insulating inner linings of the adjacent cables and separates them into left and right parts. To wrap the insulating endothelium.
As a result, there is a remarkable effect that the insulation between the left and right cables can be surely increased more than in a normal state.

[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 enlarged cross-sectional view of an essential part taken along the line BB of FIG. 9, showing an operation of a step part when a contact is inserted.

FIG. 11 is an internal perspective view showing a contact insertion state.

FIG. 12 is an exploded enlarged perspective view of a contact.

FIG. 13 is an enlarged perspective view of a contact.

FIG. 14 is an explanatory view showing another embodiment of the present invention.

FIG. 15 is a perspective view showing an example of a conventional means.

[Description of Signs] 1 Contact 1a Side piece 11 Cut section 13 Cutting edge 13a Separation wall 15 Step 16 Termination edge 2 Main body 2a Main body structure 2b Main body structure 21 Groove 22 Groove 23 Contact insertion hole 3 Hot side VVF cable 3 '' Branch-side VVF cable 31 Insulated outer sheath 32 Insulated endothelium 33 Conducting wire D Notch spacing E Groove spacing W Parallel width of conducting wire w Width of narrowing conducting wire

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-51-9288 (JP, A) JP-A-7-22076 (JP, A) JP-A-9-284970 (JP, A) JP-A 9-208 320646 (JP, A) Japanese Utility Model 50-158177 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 15/00-15/196

Claims (3)

(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 section, and the two The VVF cables (3), (2) are attached to the substantially parallel side pieces (1a), (1a).
(3 ') The cuts (11), (11), (11), which cut the insulating sheath (31) and the insulating endothelium (32) and contact the current-carrying wires (33), (33) to be connected to each cable, respectively. ) Are formed at a predetermined interval (D), and cut off the insulating sheath (31) of the cable, enter between the adjacent insulating endotheliums (32) and (32), and divide each of them into right and left. 13a) and (13a) are formed on one side of each of the two cuts (11) and (11), and
(2) is provided with two parallel grooves (21) and (22) formed at a predetermined interval (E) through which both VVF cables (3) and (3 ') are inserted, and is fitted with each other. The two main body components (2a) and (2b) are formed so as to be mateable, and one of the main body components (2a) has a plurality of insertion holes into which the contacts (1) are inserted. (23) are further provided, and the separation wall (13) is further provided.
a) A connector in which downward stepped portions (15), (15) are formed at the lower ends of (a), (13a) and slightly retreated from the lower ends of the side pieces (1a), (1a). 2. A metal plate which is 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 section, and the two The VVF cables (3), (2) are attached to the substantially parallel side pieces (1a), (1a).
(3 ') The cuts (11), (11), (11), which cut the insulating sheath (31) and the insulating endothelium (32) and contact the current-carrying wires (33), (33) to be connected to each cable, respectively. ) Are formed at a predetermined interval (D), and cut off the insulating sheath (31) of the cable, enter between the adjacent insulating endotheliums (32) and (32), and divide each of them into right and left. 13a) and (13a) are formed on one side of each of the two cuts (11) and (11), and
(2) is provided with two parallel grooves (21) and (22) formed at a predetermined interval (E) through which both VVF cables (3) and (3 ') are inserted, and is fitted with each other. The two main body components (2a) and (2b) are formed so as to be mateable, and one of the main body components (2a) has a plurality of insertion holes into which the contacts (1) are inserted. (23) are further provided, and the separation wall (13) is further provided.
a) and (13a) are formed to protrude outward from the terminal edges (16) and (16) of the side pieces (1a) and (1a) on the side where the separation wall is formed, and the lower end thereof is pressed down by a skin. Connectors formed on the steps (15), (15). 3. 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. , And a main body (2) made of a synthetic resin rich in insulation, and the contact (1) has a substantially inverted U-shaped cross section, and the two The VVF cables (3), (2) are attached to the substantially parallel side pieces (1a), (1a).
(3 ') The cuts (11), (11), (11), which cut the insulating sheath (31) and the insulating endothelium (32) and contact the current-carrying wires (33), (33) to be connected to each cable, respectively. ) Are formed at a predetermined interval (D), and cut off the insulating sheath (31) of the cable, enter between the adjacent insulating endotheliums (32) and (32), and divide each of them into right and left. 13a) and (13a) are formed on one side of each of the two cuts (11) and (11), and
(2) is provided with two parallel grooves (21) and (22) formed at a predetermined interval (E) through which both VVF cables (3) and (3 ') are inserted, and is fitted with each other. The two main body components (2a) and (2b) are formed so as to be mateable, and one of the main body components (2a) has a plurality of insertion holes into which the contacts (1) are inserted. (23) are further provided, and the separation wall (13) is further provided.
a) and (13a) are formed to protrude outward from the terminal edges (16) and (16) of the side pieces (1a) and (1a) on the side where the separation wall is formed, and the lower end thereof is pressed down by a skin. A connector formed on the step portions (15), (15), and the step portions (15), (15) are formed to be slightly receded from the lower ends of the side pieces (1a), (1a).