JP2963922B1 - connector - Google Patents

Abstract

An object of the present invention is to provide a connector capable of performing a branching operation of an electric wire safely and promptly while ensuring a high level of insulation 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 cuts an insulating outer cover 31 and an insulating inner cover 32 of a VVF cable, and has two cut portions which respectively contact with an energizing wire. 11 and two cutting blades 13 for dividing the cable into right and left. The main body 2 is V
It is provided with two main body components 2a and 2b each of which is provided with grooves 21 and 22 for inserting a VF cable and can be fitted to each other. Are provided. A hanging insulating ridge 15 is interposed between the bent pieces 13a, 13a on the upper part of the cutting blade 13 and the insulating inner skin 32 of the conducting wire so as to secure a high degree of insulation between them.

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 a positive electrode side of an 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.

In such an operation of taking out a branch line, when the main line is a branch line, the power is turned off to eliminate the danger, and generally, as shown in FIG. The VVF cable 3 is cut at a required location, the respective insulating sheaths 31 are removed, and the coated wire on the positive electrode side and the coated wire on the negative electrode side are respectively taken out. Further, the respective insulating inner skin 32 is removed to expose the core wire 33. . Similarly, for the VVF cable 3 ′ on the branch side, the insulating sheath 31 and the insulating inner skin 32 on the positive and negative electrode sides are removed to remove the core wire 3 ′.
After exposing 3, the positive-side core wire 33 of the main line and the positive-side core wire 33 of the branch line are put together, and inserted into the metal sleeve 6 provided inside the closed-end insulating cap 61. The metal sleeve 6 was pressurized and deformed by pressurization with a pressurizing tool to perform pressure bonding connection, and 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.

[0005] Therefore, the present invention enables the branching of electric wires to be performed safely and promptly in various forms without stripping the inner and outer coatings of the VVF cable as in the prior art, and to contact the connector body. To provide a connector capable of reliably separating the coated wire on the positive electrode side and the coated wire on the negative electrode side into the left and right when inserted, and ensuring a high degree of insulation between these coated wires. Is an important purpose.

[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 the cable cuts the insulating outer cover 31 and enters between the adjacent insulating inner covers 32, 32 to divide the cable into right and left. The cutting blades 13, 13 are bent near the two cuts 11, 11 and at right angles in the direction approaching each other from the side pieces 1 a, 1 a.
13a is formed at the lower end.

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. It is composed of two main body components 2a and 2b of a half-split type. A plurality of insertion holes 23 for inserting the contacts 1 are provided in one main body 2a.

The width of the two grooves 21 and 22 is
The energizing wires 33 of the VF cables 3 and 3 'are formed to have substantially the same width as the width W on the large diameter side where they are juxtaposed.
It is preferable that the space E is formed so that the space E between the first and second portions 22 and the space D between the two cut portions 11 of the contact 1 substantially coincide with each other. As a result, the VVF cables 3 and 3 ′ are
22 can be fitted without a gap.

Further, an insulating resin plate 14 for covering the upper surface of the contact 1 is provided. The insulating resin plate 14 is integrally connected to the insulating coating plate 14 and protrudes from the front side of the bent pieces 13a. Article 15 is provided. Thereby, when the bent pieces 13a, 13a are inserted between the insulating sheath 31 of the cable and the insulating inner skin 32 of the conducting wire 33,
Insulating ridges 15 are interposed between the bent pieces 13a, 13a and the insulated inner sheath 32 of the energizing wire to ensure high insulation between the energizing wires in the cable.

The contact 1 and the insertion hole 23 are preferably set in advance in plan view so that the contact 1 can always be inserted into the insertion hole 23 only in a predetermined orientation.

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 cut the insulating sheath 31 and the insulating inner skin 32 of the cable and cut. 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 an embodiment in which a connector according to the present invention is used for a two-core VVF cable, and reference numeral 1 indicates a contact. This contact 1
Is a substantially inverted U-shaped side view formed by press-forming a brass plate that is rich in electrical conductivity and has a higher hardness than the VVF cables 3 and 3 ′ to be used, and has the above-described substantially parallel side pieces 1a and 1a respectively. The two cutouts 11, 11 that cut the insulating sheath 31 and the insulating inner skin 32 of both VVF cables 3, 3 ′ and insert and contact one of the conducting wires 33 in the cable are formed at a predetermined interval D. And the notch 11,
A recess 12 is provided for partitioning 11. Further, the insulation sheath 31 of the cable is cut to form an adjacent insulation sheath 32,
Cutting blade 1 that enters between 32 and divides each side
3, 3 are formed in the vicinity of the two cut portions 11, 11 and along the width direction connecting the two substantially parallel side pieces 1a, 1a.

As shown in detail in FIGS. 11 and 12, the cutting blades 13, 13 are substantially parallel left and right side pieces 1a, 1
a bent pieces 13 bent in a direction approaching each other from a
a, 13a are formed at the lower ends.

The lower ends of the cuts 11, 11 are formed in a V-shape like a cutting blade, and the V-shaped blade forms an outer cover 31 and an inner cover 32 of the VVF cable 3, 3 '.
While reaching the inner conducting wire 33, the conducting wire 3
3 is pressed and deformed from both sides. As shown in the figure, the cut portions 11, 11 are slightly inclined upward so as to press in a direction to separate a current-carrying wire to be connected from another current-carrying wire when the cable is pushed into the cable. It is good to keep.

Further, as shown in detail in FIGS. 11 and 12, an insulating resin plate 1 covering the upper surface of the contact 1 is provided.
4 are provided integrally with the insulating cover plate 14, and vertically long insulating ridges 15 projecting forward at both left and right end portions on the front side of the bent pieces 13a, 13a are provided. . Thereby, when the bent pieces 13a, 13a are inserted between the insulating sheath 31 of the cable and the insulating inner skin 32 of the conducting wire 33, the insulation between the bent pieces 13a, 13a and the insulating inner sheath 32 of the conducting wire is achieved. With the protrusions 15 interposed, a high degree of insulation between the conducting wires in the cable can be secured.
It is preferable that the lower end of the insulating ridge 15 be sharpened like a blade.

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 good.

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 two 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 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 equal to the interval between the two cut portions 11 and 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 shifted from each other 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 so as to have directivity in the insertion direction so that the contact 1 can always be inserted into the insertion hole 23 only in a predetermined orientation. In this embodiment, the form of the contact 1 and the insertion hole 23 have directivity in the insertion direction by forming convex portions on both sides in a trapezoidal shape 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, ie, V, as shown in FIGS.
The VF 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, whereby the branch connection by inserting the contact can be reliably performed. .

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.

As shown in FIGS. 2 and 4, receiving grooves 29 are formed at both ends of the grooves 21 and 22 to removably receive a shielding wall 28 for receiving a cut end face of the VVF cable. I have. 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 has the grooves 21 and 21.
Alternatively, the grooves 22, 22 are formed of a single elliptical shape which is vertically aligned, but may be formed in a half-shape and mounted in the receiving grooves 29, 29 facing each other.

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 bundled 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 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 energizing wires 33 and 33 on the same pole side of both cables, and at the same time, the cutting blade 13 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. Further, the insulating ridge 15 of the insulating resin plate 14 is
a, 13a and the inner conductor 32 of the current-carrying wire to further ensure insulation between them. In this way, the branch line is branched from the existing wiring or the main line. Further, the hook body 3 provided on any one of the cover bodies 26
5 allows the connector, together with the cables 3 and 3, to be hung on a building or a building, 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 above embodiment, the connector used for the two-core VVF cable has been described. However, as shown in FIG. 14, the number of the connector 1 of the main body and the number of the contact insertion holes 23 of the main body are reduced to three, and the three-core VVF cable is used. 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 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-shaped components 2a and 2b of the main body 1 are integrally connected so as to be foldable by the folding portion 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.

[0030]

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.

Further, according to the present invention, since long vertically extending insulating ridges are provided integrally with the insulating covering plate and protrude toward the front side of the bent piece, the bent piece is formed by the cutting blade. When inserted between the insulated sheath and the insulated endothelium of the conducting wire, an insulating ridge is interposed between the bent piece and the insulated endothelium of the conducting wire and pressed in a direction to separate them, thereby causing There is an effect that a high degree of insulation between the conducting wires can be ensured.

[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 exploded enlarged perspective view of a contact.

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

FIG. 13 is an explanatory view showing another embodiment of the present invention.

FIG. 14 is a perspective view showing an example of a conventional means.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 contact 1a side piece 11 cut portion 13 cutting blade 13a bent piece 14, 14 'insulating resin plate 15 insulating ridge 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 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

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-283193 (JP, A) JP-A-11-98676 (JP, A) Fully open 1980-140271 (JP, U) Really open 3 94770 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H02G 15/00-15/196

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 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 outer sheath (31) of the cable to enter between the adjacent insulating endothelia (32) and (32) to divide each of them into right and left. 13) and (13) are bent near the two cuts (11) and (11) from the parallel side pieces (1a) and (1a) at right angles in a direction approaching each other. ), Formed at the lower end of (13a), and the main body (2) is connected to both VVF cables (3),
(3 ') is provided with two parallel grooves (21) and (22) formed at a predetermined interval (E) through which two grooves are formed, and two halves are formed so as to be fittable with each other. One of the main body components (2a) is composed of the main body components (2a) and (2b).
(1) are provided with a plurality of insertion holes (23), respectively. Further, an insulating resin plate (14) for covering the upper surface of the contact (1) is provided. ) Are provided integrally with the bent pieces (13a), (13a), and vertically long insulating ridges (15) protruding from the front side of the bent pieces (13a), (13a) are provided. ) Is the cable's insulation sheath (31) and the conducting wire
When inserted between the insulating endothelium (32) of (33), the bent piece
Insulation ridges between (13a), (13a) and the inner conductor (32) of the conducting wire
(15) A connector configured to ensure a high degree of insulation between energized wires in the cable.