JPH1198676A - Branch connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector by which wires safely and quickly can be branched, without peeling a trunk cable and a branch cable of insulating coverings. SOLUTION: A branch connector is consists of a contact 1, made from a metal plate with high conductivity and a main body 2 which is made of synthetic resin having high insulating performance. The contact 1 has a sidewise cross-section of an inverted-U shape. Notches 11 and 11', which cut through the respective insulation coverings of a trunk cable and a branch cable and are brought into contact with their conductors, are formed in the two parallel pieces 1a and 1b of the contact 1 with a predetermined interval D. The main body 2 is provided with two main body half constituent units 2a and 2b which can be mated with each other and which have respectively two parallel grooves 21 and 22, through which the trunk cable and the branch cable are inserted with predetermined separating intervals E. An insertion hole 23, into which the contact 1 is to be inserted is provided in the one main body half structural unit 2a and an insulating cover unit 26, which covers the top surface of the main body half structural unit 2a into which the contact 1 has been inserted, is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a building, an apartment,
The present invention relates to a branch connector for branch connection of a branch cable from a trunk cable in which a single current-carrying wire is insulated and coated with a film in a low-voltage wiring work in a factory or the like, for example, on each floor.

[0002]

2. Description of the Related Art Conventionally, branch connection of a branch cable from such a trunk cable is often required and is always performed. In this case, the coating of the main cable is usually peeled off at a required location to expose the conducting wire, and similarly, the coating at the tip of the branch cable is also removed to expose the conducting wire, and these conducting wires are crimped with metal. A crimp connection was made with a sleeve, and the outer periphery was covered with an insulating mold.

[0003]

In such a means,
If the trunk cable is a branch line, the power must be turned off before branching because of the necessity of electric shock prevention, and during that time a power outage will be forced, and the work will be very troublesome Because of this, there is a problem that the construction time is long and the work 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 insulating coating of the trunk cable and the branch cable as described above. The purpose is to do so.

[0005]

In order to achieve the above object, the present invention takes the following measures. That is, in the branch connector according to the present invention, the contact 1 is made of a metal plate contact 1 rich in electrical conductivity and a body 2 made of synthetic resin rich in insulation. The contact 1 has a cross-sectional shape viewed from the side. The two parallel pieces 1a, 1a are cut in the respective insulating films of the trunk cable 3 and the branch cable 3 'into substantially inverted U-shape, and the cut portions 11, 11' contacting the conducting wires 33, 33 '.
Are formed at a predetermined interval D. The main body 2 has two parallel grooves 21 and 2 formed at a predetermined interval E for inserting the trunk cable 3 and the branch cable 3 ′.
2 and two half-structured main body components 2a and 2b formed so as to be fittable with each other, and one of the main body components 2a is provided with an insertion hole 23 for inserting the contact 1 therein. An insulating cover which is formed at an interval where the interval E between the two grooves 21 and 22 and the interval D between the two cut portions of the contact 1 substantially match, and further covers the upper surface of the main body 2a into which the contact 1 is inserted. 26 is provided.

[0006] It is also possible to provide two grooves 22 for inserting the branch cable 3 'on the left and right sides of the main cable insertion groove 21 so that two branch cables can be obtained. In this case, the contact 1 also has two cut portions 1 for making cuts in the left and right branch cables 3 ′, 3 ′.
It is necessary to provide 1 ′, 11 ′ on the left and right of the main cable notch 11.

The contact 1 is preferably made of a material having higher hardness and higher conductivity than soft copper used for the current-carrying wire of each cable, such as a hard copper alloy plate having high hardness. preferable. Notch 1 of contact
The cut interval (slit interval) of 1, 11 'is determined by pressing the contact 1 against the cable 3, 3', thereby tearing off the insulating coating of the cable and energizing wires 33, 33 'on the inner surface facing the cut. Therefore, the width should be slightly smaller than the thickness of each energizing line. By doing so, during this energizing operation, the energizing wire is firmly pressed and clamped from both sides while being plastically deformed by the pressing force.

[0008]

1 to 6 are views showing an embodiment of a branch connector according to the present invention. This contact 1 is formed by press-forming a brass plate which is rich in electrical conductivity and has a hardness higher than the hardness of the trunk cable used and the branch cables 3 and 3 '.
And a substantially parallel piece 1a, 1a of which is provided with an insulating coating of the trunk cable 3 and the branch cable 3 '.
That is, the insulating sheath 31 and the insulating inner skin 32 are cut and the energized wire 3 is cut.
Two notches 11, 11 'which are inserted into and contact with 3, 33'
Are formed at a predetermined interval D. The lower ends of the cuts 11 and 11 'are formed in a V-shape like a cutting blade, and the cutting blade forms an outer cover 3 of the cable 3, 3'.
1 and the inner skin 32 while cutting the inner conducting wires 33, 3
It reaches 3 ', and the current-carrying wire is clamped while being pressed against and deformed from both sides.

The thickness of the contact 1 and the notch 1
The width of 1 is preferably set by calculation such that the area of the portion in contact with the energizing wires 33, 33 'by pressure welding is approximately equal to or greater than the cross-sectional area of the energizing wire.

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 composed of a main cable 3 and a branch cable 3 '. 2 for inserting and fitting
The grooves 21 and 22 are formed in parallel at a predetermined interval E. One of the main body components 2a is
And an insertion hole 23 for inserting the other component 2b at one side with a folding portion 24 so as to be foldable. These main body components 2a, 2b are structured so as to be fitted to each other at the free end side through an engagement piece 20b and an engagement hole 20a. The cover 26 is connected to the main body 2a through flexible connecting bands 25, and is foldably connected to the contact insertion surface of the main body 2a. The cover body 26 is provided with engaging claws 27a which engage with engaging holes 27 provided on the side surface of the main body component 2a.
It has.

The grooves 21 and 22 hold the cables 3 and 3 'without gaps when the main body components 2a and 2b are folded together with the main cable 3 and the branch cable 3' to be inserted. It is formed to the size that can be. 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 and 11 ′ of the contact 1, that is, the interval D between the center lines. It is. Further, as shown in FIG. 1, the insertion hole 23 for inserting the contact 1
And is formed in a size suitable for inserting and temporarily holding the lower half of the contact 1.

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 predetermined orientation. In the present embodiment, the form of the contact 1 and the insertion hole 23 have directivity in the insertion direction by being formed in a trapezoid such that one end side is gradually widened in a plan view shape. A concave portion may be formed in a part of the periphery of the contact, and a convex portion corresponding to the concave portion may be provided on the outer surface of the contact.

At both ends of the groove 22 into which the branch cable 3 'is inserted, receiving grooves 29 are formed to removably receive a shielding wall 29 for receiving the cut end surface of the branch 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 cable to be transmitted from the outside. Further, in the present embodiment, the shielding wall 28 is formed of a single circular shape in which the grooves 22, 22 are vertically aligned. However, the shielding wall 28 is formed in a half-shape, and is attached to the receiving grooves 29, 29 facing each other. It may be.

An example of use in the case where only one branch cable 3 'is branched and extended in one direction only from the trunk cable 3 using the connector configured as described above will be described below.
First, as shown in FIG. 3, a shielding wall 28 is attached to a receiving groove 29 at one end of the groove 22 on the side where the branch cable 3 'is inserted. Then, as shown in FIG. 3, the branch cable 3 ′ is inserted into the groove 22 of the main body structure 2 b while keeping the cut end face against the shielding plate 28 as shown in FIG. 3. Then, after the main cable 3 is inserted into the groove 22 of the main body structure 2b, as shown in FIG. 4, the other structure 2a is folded from the foldable portion 24, covered thereon, and pressed.
On the other side, the engagement piece 20b and the engagement hole 20a are fitted to each other. In this structure fitting state, the cable 3 'on the branch line side may be inserted from the opening.

Next, from the state shown in FIG.
Is pressed by a suitable pressing tool so that the entire contact 1 is buried in the contact insertion hole 23, and finally, as shown in FIG.
5 to cover the outer surface of the contact 1, and the engaging claws 27a formed at the respective corners are engaged and connected to the engaging holes 27 formed in the main body 2a.

As shown in FIG. 6, the pressurized contact 1 cuts off the insulating coating of the cables 3 and 3 'inside the connector body 2 to form the conductive wires 33, which are the core wires of both cables.
33 'and make electrical contact. Thus, in FIG.
As shown in (a) and (b), one branch cable 3 ′ is branched from the trunk cable 3.

In the present invention, since the shield wall 28 is detachable from the receiving grooves 29, the shield wall 28 can be removed and the branch cable 3 'can be attached with both ends extended from the connector. The metal plate used as the material of the inverted U-shaped contact 1 is a material having a higher hardness and a relatively lower electric resistance than the current-carrying wires of the cables 3 and 3 ', that is, a material having excellent conductivity. Often,
Materials other than copper alloy plates can also be used.

In the present invention, as shown in FIG. 7, two grooves 22 for inserting the branch cable 3 'are provided on the left and right sides of the main cable insertion groove 21, so that two branch cables can be obtained. It is also possible to configure 2 ′.
In this case, it is necessary to provide two notches 11 ′, 11 ′ for making cuts in the left and right branch cables also on the contact 1, on the left and right sides of the main cable cut 11. In this way, as shown in FIG. 8 (c), two branch cables 3 ′,
3 'can be branched.

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.

[0020]

Since the present invention is constructed as described above, after inserting the main cable and the branch cable to be connected into the connector main body while covering the same, the operation is merely press-fitting the contact into the connector main body. Even if the trunk cable is a branch line, the branch cable can be safely, reliably and quickly branched without interrupting the current supply. In addition, the connector body has a simple structure made of a resin molded product and is inexpensive. There is an effect that can be provided to.

[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 showing a state in which each cable is inserted into a groove in FIG. 2;

FIG. 4 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. 5 is a perspective view showing a state in which a cable is completed with the cover body covered.

FIG. 6 is an enlarged sectional view showing a contact insertion state.

FIG. 7 is a sectional view similar to FIG. 6, showing another embodiment in which some modifications are made to connect two branch cables.

FIG. 8 is an explanatory diagram showing a state where a branch cable is branched from a trunk cable.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 11, 11 'Notch 2 Connector main body 2a Main body structure 2b Main body structure 21 Trunk cable insertion groove 22 Branch cable insertion groove 23 Contact insertion hole 26 Cover body 3 Trunk cable 3' Branch cable 33, 33 'through Electric wire D Notch spacing E Groove spacing

Claims (1)

[Claims] 1. A contact made of a metal plate rich in electrical conductivity.
(1) and a main body (2) made of synthetic resin rich in insulation, wherein the contact (1) has a substantially inverted U-shaped cross-sectional shape viewed from the side, and the two parallel pieces (1a). , (1a), cut the insulation film of each of the trunk cable (3) and the branch cable (3 ') and cut the cuts (11), (1)
1 ′) are formed at predetermined intervals (D), and the main body
(2) has two parallel grooves (2) formed at a predetermined interval (E) through which the trunk cable (3) and the branch cable (3 ') are inserted.
1), (22), and is constituted by two main body components (2a) and (2b) of a half-split type formed so as to be fittable with each other,
One main body (2a) is provided with an insertion hole (23) for inserting the contact (1), and an interval (E) between the two grooves (21) and (22) and the contact (1) are formed. Two notches (11), (1
A branch connector formed at an interval substantially matching the interval (D) of 1 ′), and further provided with an insulating cover body (26) covering the upper surface of the main body component (2a) into which the contact (1) is inserted. .