JP2985060B2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a single (not a fine twisted wire) energizing wire generally used as a power line, which is insulated and coated, and is arranged in parallel. For a VVF cable covered with an insulation coating, when wiring such a VVF cable or when connecting another VVF cable to an already-wired existing wiring to obtain a branch line, a current-carrying line and a branch line on the positive electrode side of the existing wiring are used. The present invention relates to a connector suitable for connecting and branching a current-carrying line on the positive electrode side without error.

[0002]

2. Description of the Related Art It is often necessary to connect such a VVF cable to another VVF cable to obtain a branch line. In this case,
In some cases, it is necessary to distinguish the positive side and the negative side of the current-carrying line when power is supplied to various devices, and therefore, the color of the interior coating of the VVF cable is generally a different color that can be easily identified.
For example, the color of the interior coating of VVF cables is often two colors, white and black. When a branch line is taken out from the main line, it is common practice to connect the white-covered conductive line of the main line to the white-covered conductive line of the branch line, and similarly connect the black-covered conductive lines to each other.

In such a branch line removal work, when the main line is a branch line, the power is turned off 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 wires on the positive and negative sides are respectively taken out, and the inner coverings 32 are further removed and passed. The electric wire 33 is exposed.
Similarly, for the VVF cable 3 'on the branch side, after removing the outer coating 31 and the inner coating 32 on the positive electrode side and the negative electrode side to expose the energizing wire 33, the VVF cable 3' is branched from the positive-side energizing wire 33a of the main line. The positive electrode side conducting wire 33a of the wire is put together,
The metal sleeve 5 is inserted into the metal sleeve 5 housed inside the closed end insulating cap 51, pressurized from above with a pressing tool to deform the metal sleeve 5 under pressure, and pressure-bonded to each other. The energizing wires were connected.

As another means, a VVF cable is taken out of the energizing line as described above, these are divided into a positive electrode side and a negative electrode side, respectively, and the energizing lines are twisted and connected by a tool. Alternatively, a method has also been used in which a copper sleeve is put on these members and pressure-bonded and connected, and then an insulating tape is wound around each surface to cover them.

[0005]

In these conventional means, after the outer skin of the VVF cable is peeled off for a certain length to take out the endothelium, the inner length is removed to expose the energizing wires, and then the energizing wires are connected to each other. Since the electrical connection is made, the connection between the current-carrying wires on the positive electrode side and the current-carrying wire on the negative electrode side can be made arbitrarily without requiring special consideration. However, if the main line that 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 the work is very troublesome, the construction time is long and the work efficiency is poor.

[0006] Therefore, as a means for eliminating such danger and improving the work efficiency, in the branch connection work of a VVF cable, it is omitted without performing a complicated work of removing an insulating coating. In order to be able to safely and quickly perform the branch connection work of the electric wires without danger of an electric shock accident, the electric wires are branched without stripping the inner and outer coatings of the VVF cable at all. The applicant of the present invention has previously proposed a connector capable of performing operations (see Japanese Patent Application No. 8-201246 (Japanese Patent Application Laid-Open No. 10-27638)).

However, when this prior art connector is used, it is difficult in this prior art to recognize the above-described positive-side conductive lines and between the negative-side conductive lines and securely connect them. The present invention further improved this, and as described above,
It is a connector that can safely and quickly branch wires without stripping the inner and outer coatings of the VVF cable. It is an object of the present invention to provide a connector that can be recognized and securely connected.

[0008]

In order to achieve the above object, the present invention takes the following measures. That is, in the connector of the present invention, the two-core VVF cable 3
This connector is used for connecting and branching the core VVF cable 3 ′, and includes a contact 1 made of a metal plate having high conductivity and a main body 2 made of synthetic resin having high insulation. The contact 1 has a substantially inverted U-shaped cross section as viewed from the side, and the respective pieces 1a, 1a
Two notches 11, 11 for cutting the insulating outer cover 31 and the insulating inner cover 32 of the VF cables 3, 3 'and inserting and contacting one of the conducting wires 33 in the cable are formed at a predetermined interval D, and the cable is formed. Cutting blades 13, 13 for separating the left and right from the center of the width W on the large diameter side of each of the cut portions 1
In the direction connecting the two pieces 1a, 1a in the vicinity of 1, 11
The cuts 11, 11 are formed so as to be inclined in a direction to separate the conducting wires 33, 33 in the cable from side to side . Further, the main body 2 has both V
It has two parallel grooves 21 and 22 formed at a predetermined interval E for inserting the VF cables 3 and 3 ′, and is foldably connected by a fold 24 on one side. The main body 2a is divided into two main bodies 2a and 2b.
The cover body 26 is provided so as to be foldably connected to the insertion holes 23 and 23 into which the body is inserted. Further, the two grooves 21 and 22 are connected to the two VVF cables 3,
3 ′ is formed to be substantially the same width as the width W on the large diameter side.
The opposing width of the grooves 21, 21, 22, 22 in the folded posture of the two main body components 2a, 2b is
The VF cables 3, 3 ′ are formed so as to have substantially the same width w on the narrow side, respectively, the distance E between these two grooves 21, 22 and the two cuts 11, 11 of the contact 1.
Are formed at intervals substantially equal to the interval D.

The two grooves 21 and 22 are formed so as to penetrate the entire width of the main body components 2a and 2b, respectively, and the branch-side VVF cable 3 'is protruded from both sides of the insertion groove 22 so as to protrude therefrom. Each of the cables 3 ′ protruding on both sides may be used as a branch line to obtain two branch lines. The groove 22 for inserting the VVF cable 3 ′ on the branch side is formed with a shielding wall 28 at one end side. In this case, the cut end of the VVF cable 3 'on the branch side can be applied to the shielding wall 28 and protruded only in one direction, so that only one branch line can be obtained.

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. Needless to say, when two or more contacts 1 are used to connect one of the wires, the sum of the contact areas of all the used sheets should be equal to or larger than the cross-sectional area of the conducting wire 33. By doing so, the electrical resistance of the contact portion between the contact 1 and the conducting wire 33 can be kept low, accidents such as heat generation can be prevented, and a connector that can be used safely can be obtained. it can.

[0012]

1 to 10 show an embodiment of a connector according to the present invention. The contact 1 has a substantially inverted U-shape in 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, and each of the pieces 1a, 1a has: The two cut portions 11, 1 which cut the insulating outer cover 31 and the insulating inner cover 32 of both VVF cables 3, 3 'and insert and contact one of the conducting wires 33 in the cable.
1 are formed at a predetermined interval D, and a concave portion 12 for dividing the cut portions 11 is provided at an intermediate portion. Further, cutting blades 13, 13 for dividing the cable from the middle of the width W on the large diameter side to the left and right are formed along the direction connecting the two pieces 1a, 1a in the vicinity of the respective cut portions 11, 11. . The lower ends of the cut portions 11, 11 are formed in a V-shape like a cutting blade, and the outer blade 31 and the inner skin 32 of the VVF cable 3, 3 'are formed by the cutting blade.
While reaching the inner conducting wire 33, the conducting wire 3
3 is pressed and deformed from both sides. The cut portions 11, 11 are formed to be slightly inclined upward so as to separate the conducting wires 33, 33 in the cable from side to side 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 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.

The connector main 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). 2 core VVF cable 3 and 2 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 has insertion holes 23 for the contact 1 and is foldably connected to the other body 2b at one side by a foldable portion 24. These main body components 2a and 2b are provided with engaging pieces 20b on the free end side.
And the 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 26
Are provided with engaging claws 27 which engage with engaging holes 27a provided in the side surface of the main body 2a. Further, the main body 2
The b is provided with a hook 35 for hooking the present connector.

The widths of the grooves 21 and 22 are substantially the same as the widths W of the VVF cables 3 and 3 'on the side of the conducting wire parallel (larger diameter side), so that the cables can be inserted without gaps. Grooves 21, 21, 2 in a folded position in which the two main body components 2 a, 2 b are fitted to each other.
Opposing width between 2, 22 (sum of the depth of both opposing grooves)
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 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. As shown in FIGS. 3 and 5, the insertion hole 23 for inserting the contact 1 is formed in a size suitable for inserting and temporarily holding the lower half of the contact 1.

The folded portion 24 of the two main body components 2a and 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 is 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 touches 8, the two wires 3, 3 'can be inserted parallel to the connector.

In order to branch an electric wire using the connector constructed as described above, the two-core VVF cable 3 on the already-wired side (branch side / branched line side) is covered in a state shown in FIG.
As shown in FIG. 2, one of the main bodies 2a and 2b (here, 2b) is inserted into the groove 21 so that the cross section is in a horizontal posture, and the two 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.
5, and then, as shown in FIG. 5, the other component (here, 2 a) is folded from the folded portion 24, placed over it and pressed, and engaged with the engaging claw piece 20 b 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.
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 energizing wires 33 and 33 on the same pole side of both cables, and at the same time, the cutting blade 13 Thereby, the cable is divided right and left from the middle of the width W on the large diameter side. At this time, each notch 1
1 and 11 are formed so as to be inclined in a direction that separates the left and right conducting lines 33 and 33 of the respective cables 3 and 3 ′ into left and right, so that the conducting lines 33 and 3 having different poles in the same cable.
3 can be separated to the left and right to enhance safety. In this way, the branch line is branched from the existing wiring or the main line. Further, 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.

Incidentally, in the present invention, the inverted U-shaped contact 1 can also be manufactured by coating a metal plate of a material for forming a contact with an insulating layer in advance and then molding it 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.

[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 cut portion 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 a low cost because of the simple structure of the 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.

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 a state where a cable is inserted into the groove of FIG. 2;

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

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

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 when a contact is inserted.

FIG. 10 is an explanatory perspective view showing the internal structure in FIG. 8;

FIG. 11 is a perspective view showing a conventional means.

[Description of Signs] 1 Contact 11 Cut portion 13 Cutting blade 2 Main body 2a Main body structure 2b Main body structure 20a Fitting portion 20b Fitting portion 21 Groove 22 Groove 23 Contact insertion hole 24 Folding portion 25 Folding portion 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 Energizing line D Notch interval E Groove interval W Parallel width of energizing line w Energizing line Narrow side width

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-130409 (JP, A) JP-A-10-40974 (JP, A) JP-A 8-190941 (JP, A) JP-A 52-108 8490 (JP, A) Japanese Utility Model Showa 50-103184 (JP, U) Japanese Utility Model Showa 61-166373 (JP, U) Japanese Utility Model Utility Model 6-44029 (JP, U) (58) Field surveyed (Int. ⁶ , DB name) H01R 4/24 H01R 9/03-9/07

Claims (1)

(57) [Claims] A connector used for connecting and branching a two-core VVF cable (3 ') for branching from a two-core VVF cable (3), wherein the contact is made of a metal plate rich in electrical conductivity. , (1), and a main body (2) made of a synthetic resin having a high insulating property, wherein the contact (1) has a substantially inverted U-shaped cross section as viewed from the side, and each of the pieces (1a), (1a) the two VVF cables (3),
(3 ') The two cuts (11) and (11) which cut the insulating sheath (31) and the insulating inner skin (32) and insert and contact one of the conducting wires (33) in the cable have a predetermined interval. (D), and the cutting blades (13), (1) that divide the cable from the middle of the large diameter width (w) to the left and right.
3) near the cuts (11) and (11)
It is formed along the direction connecting the two pieces (1a), (1a), and further, when the cutouts (11), (11) are inserted into the cable, an energizing wire in the cable. (33),
The notches (11) and (11) are formed so as to be slightly inclined so as to press the (33) in the direction of separating the left and right sides, and the main body (2) is composed of both VVF cables (3) and
It has two parallel grooves (21) and (22) formed at a predetermined interval (E) through which (3 ') is inserted, and is foldably connected by a fold (24) on one side. The main body (2a), (2b), and one of the main body (2a) has an insertion hole (23) into which the contacts (1) and (1) are inserted. (2
3) and a cover body (26) foldably connected from the main body structure, and the two grooves (21), (2) are provided.
2) is formed to have substantially the same width as the large-diameter width (w) of the two VVF cables (3) and (3 '), respectively, and the two main body components (2a) and (2b) are in a folded position. The facing width of the grooves (21), (21), (22), and (22) is substantially the same as the width (W) of the narrow side of the VVF cables (3) and (3 '). The distance (E) between the two grooves (21) and (22) and the two cuts (11) and (1) of the contact (1) are formed.
A connector formed at an interval substantially matching the interval (D) of 1).