JPH088118B2 - Electric wire connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to connect or branch a plurality of electric wire cables consisting of a single wire in various buildings such as houses and buildings for indoor wiring from a distribution board to a terminal outlet or the like. The present invention relates to a connector for a single wire used for wiring.

[0002]

2. Description of the Related Art Conventionally, as a connector for connecting a single wire cable having a relatively thick single wire having a diameter of 1 to 2 mm, which is mainly used for wiring in the ceiling or in a wall, one-touch operation by inserting a single wire. For example, Japanese Patent Publication No. 2-51
It has already been proposed as seen in Japanese Patent Publication No. 222.

This type of electric wire connector has two wires for connecting only two wires, to three wires, four wires, five wires, and six wires.
Many types are required, such as for books, for eight or for ten. On the other hand, in this type of electric wire connector, when the electric wire is inserted, the inserted electric wire acts to push the inserted electric wire toward the conductive plate, and the external force in the pulling direction is applied to the inserted electric wire. When applied, it has an electric wire pressing claw that acts to bite into the electric wire and prevent the electric wire from moving out in order to prevent accidental accidental disconnection.

Since the electric wire pressing claw has a function of preventing the electric wire from coming off by being bitten into the electric wire thus inserted, a steel plate, which is difficult to perform precision processing, is used as a forming material thereof. On the other hand, as described above, this kind of electric wire connector is necessary because many kinds are currently used, from one for two wires to one for eight wires, or one for ten wires. Therefore, as a matter of course, it is the current situation that the metal fittings are precision-machined for each type using steel plates that are difficult to process.

However, the size relationship between the metal fitting main body and the metal fitting housing space of the insulating container for accommodating the metal fitting main body or the like is such that if the space is small, the metal fitting will not enter, and if this is pushed in forcefully, the container will crack. It will be a defective product and it will be difficult to insert it when it is almost full, and it will have to be press-fitted.Also, even if these are manufactured with precision, a manufacturing error will occur. Compared with the above, the metal fitting space of the container must be made slightly larger. Therefore, it is usually manufactured in such a dimensional relationship that there is a slight marginal space between them.

[0006] Therefore, in the general one, the metal fitting moves in the container by the amount of the extra space and makes an unpleasant sound, giving the user a distrust as if the safety performance is inferior. Occasionally, a slight misalignment occurs between the wire guide hole formed in the lid and the wire passage guide hole formed in the metal fitting, which may hinder smooth wire insertion. It was what I was holding.

[0007]

SUMMARY OF THE INVENTION Therefore, the present invention aims to surely solve the problems of such conventional connectors by simple means, and especially for six wires. It is an object of the present invention to provide a means capable of preventing such a conventional problem even in a connector for a large number such as eight.

[0008]

The constitution of the present invention for achieving the above object will be described with reference to the reference numerals in the drawings showing the embodiments. The constitution of the connector according to the present invention is formed of a synthetic resin material. A bottomed rectangular tubular container body 1 and a plurality of electric wire pressing claws 21 that are metal fittings installed inside the container body 1.
A hard metal main body 2 having ... And a conductive plate 3 made of copper
And a lid 4 which is a synthetic resin lid fitted and fixed to the opening 11 of the container body 1 and having a plurality of wire guide holes 41 for guiding the tip end of the wire. It is assumed that the container body 1 having a bottom corner cylinder has a protrusion 14 protruding from the bottom wall 13 portion of the container body 1 toward the inside of the cavity 10, and the metal fitting main body 2 faces the wire pressing claw 21. A cutout portion 27 is formed in a lower side wall 26 that is bent and protruded from the lower side of the base wall 22 toward the front side to form the container body 1
The notch portion 27 engages the projection 14 in a sandwiched state so as to prevent movement of the metal fittings and restrict the position thereof.

The projection 14 inside the container body 1 is projected only from the bottom wall 13 of the container body 1, or is projected so as to be connected to the bottom wall 14 and the front wall 15 or the back wall 16. Alternatively, it may be connected to three walls of the bottom wall 14, the front wall 15 and the back wall 16 and projected. In any of these cases, it goes without saying that the notch 27 formed in the metal fitting main body 2 is formed in a shape that allows the projection 14 to be sandwiched.

[0010]

Since the connector of the present invention has the above-described structure, the projection 14 in the container body 1 is sandwiched by the notches 27 formed in the metal fitting main body 2,
Since the position of the metal fitting main body 2 is regulated to prevent movement, the positional relationship of the metal fitting main body 2 in the container body 1 can be easily determined, and the overall size of the metal fitting main body 2 can be determined. On the other hand, even if the size of the internal space of the container body 1 is slightly large, the metal fitting main body 2 does not move and no unpleasant noise is generated, and the insertion of the electric wire into the container body 1 is facilitated. Can be made. Therefore, it is not necessary to make the internal space of the container body 1 and the outer shape of the metal fitting main body 2 completely coincide with each other, and it is possible to make a slightly larger design in advance. Can be easily inserted and productivity can be improved.

In using the electric wire connector of the present invention, as in the conventional case, the end portion of the electric wire of a single wire in which the insulating coating on the end is removed by a predetermined length is used as a cover for the insulating case. It suffices to insert the wire guide hole 41 formed in the body 4 into the metal fitting main body 1. When the electric wire is inserted into the container body 1, the tip of the electric wire is pressed against the conductive plate 3 by the electric wire pressing claw 21 having spring elasticity inside the metal fitting main body 1 and is brought into line contact or surface contact with the surface of the conductive plate 3. The
Similarly, it is electrically connected to another electric wire inserted in the connector via the conductive plate 3. The wire pressing claws 21 that are inclined in a shape along the wire insertion direction firmly engage with the surface layer of the wire when an external force is applied to the wire, and prevent the wire from coming out of the connector.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show the first embodiment, FIG. 1 is an overall exploded view for explaining a manufacturing method, and FIG. 2 is a view for explaining a structure of a manufactured connector. This connector is an embodiment of a connector that electrically connects four electric wires each having a single core wire to each other. The container body 1 of this embodiment is formed into a bottomed rectangular tube shape by a transparent insulating resin material such as PVC, and an opening 11 is provided at one end (upper side in the drawing) of the bottom of the opening 11.・ Horizontal oblong lid fitting hole 1
2 and 12 are formed. The lid 4 is made of an opaque or semi-transparent insulating resin material and has a prismatic shape with a short vertical thickness, and is shaped to fit snugly into the opening 11. It penetrates in the vertical direction and the lower end is tapered. Became 4
Two electric wire guide holes 41 are formed side by side in the lateral direction, and laterally long projections 42, 42 that fit into the lid fitting holes 12, 12 are formed in the side wall in the front-rear direction. Further, as shown in FIGS. 3 and 4, a thin plate-shaped projection 14 that projects toward the inside of the cavity 10 is formed over the bottom wall 13 and a part of the front wall 15 of the container body 1. There is.

The metal fitting main body 2 to be housed in the container body 1 is formed by bending a stainless steel thin plate into a "U" shape to form an upper side wall 24 and a lower side wall 26, and then, the tip portion of the upper side wall 24 is fixed to the base wall 22. It is bent diagonally downward toward the side, the tip is formed on the wire pressing claw 21, and the tip of the lower side wall 26 is formed into a "dogleg" shape so that the bent portion 23 faces the base wall 22 side. The bent portion 23 is formed in such a manner that the electric wire is pressed against the bent portion 23, and the width between the lower side wall 26 and the portion where the bent portion 23 is formed is approximately equal to the thickness of the protrusion 14 in the container body 1. Is formed, and two burring-processed electric wire passage guide holes 25 projecting downward in a "funnel shape" are formed side by side on the flat surface of the upper side wall 24. Form a unit body 2P that mainly forms a metal fitting for two electric wires And Aru. That is, the metal fitting main unit 2P is a metal fitting main unit having two electric wire passage guide holes 25, two electric wire pressing claws 21, and two electric wire pressure welding bent portions 23.

The conductive plate 3 is made of a copper alloy strip having substantially the same inner dimensions as the upper and lower side plates of the metal fitting main body 2. The conductive plate 3 is formed into a corrugated plate which is sequentially uneven in the length direction. It is obtained by cutting the formed product into a predetermined size. That is, the conductive plate 3 of this embodiment is formed in a shape having four recessed grooves 3a on one surface as shown on the left side of FIG.

In order to manufacture the connector for four electric wires shown in this embodiment, first, as shown in the exploded view in FIG. 1, two unit bodies 2P, each having two electric wire pressing pawls, Two
As shown by an arrow A, the metal fitting main body 2 is configured by aligning P in the lateral direction in parallel and one of the two unit bodies 2P, 2P arranged in parallel is formed with the four recessed grooves 3a. As shown by the arrow B, the conductive plate 3 is laterally inserted between the electric wire pressing claw 21 and the base wall 22 facing the electric wire pressing claw 21, and the electric wire pressing claw 21 and the opposing base wall are opposed to each other. After being sandwiched between the two, the metal fitting main body 2 composed of the two units and the conductive plate 3 are held in the sandwiched state, and as shown by an arrow C, the opening 11 of the container body 1 is opened. From the inside of the container body 1, and then, as indicated by the arrow D, the four electric wire guide holes 41.
The lid 4 having ... Is press-fitted into the opening 11 of the container body 1, and the laterally long protrusion 42 is formed into the laterally long lid fitting hole 1 of the container body 1.
Fit in 2 and fix.

As shown in FIGS. 2 to 5, the connector manufactured as described above is provided with electric wire pressing claws 21... 2 inside a bottomed rectangular cylindrical container body 1 formed of a synthetic resin material. A metal fitting main body 2 composed of two unit bodies 2P, 2P each having one piece, and one conductive plate 3 having four concave grooves 3a.
That is, the conductive plate 3 covers the electric wire pressing claw 21 and the electric wire pressing claw 21 over the entire lateral width of these two units 2P, 2P.
And the notch portion 27 is in a state of sandwiching the protrusion 14 in the container body 1 and is engaged with the protrusion 14 to prevent movement and position It is regulated and installed inside the container body 1.

In order to connect a plurality (up to four in this case) of electric wires (not shown) to each other using the connector as described above, a bare single-wire electric wire with the coating removed is removed from the lid body 4. It is inserted into the inside through the wire guide hole 41, and its tip passes through the wire passage guide hole 25 of the metal fitting main body 2 and the lower side wall 26 on the back side.
Just push it in until it hits. By doing so, the inserted electric wire is pressed against the conductive plate 3 by the electric wire pressing claw 21 and the "C-shaped" electric wire pressure bending portion 23, as already described, and the electric wire peripheral surface The predetermined width is in surface contact with the surface of the recessed groove 3a of the conductive plate 3. Also,
The wire pressing claw 21 receives the retaining action. In this way, electrical connection is similarly established via the conductive plate 3 with the electric wire inserted from the other electric wire guide hole 41.

FIGS. 6 and 7 show another embodiment. In FIG. 6, there are two wire guide holes 41 formed in the lid body 4 fitted in the container body 1, and a metal fitting. A connector for connecting two electric wires having two electric wire passage guide holes 25 formed in the main body 2, two electric wire pressing claws 21 and two electric wire press-fitting bent portions 23. Only one is formed. 7 has three wire guide holes 41 formed in the lid 4 fitted to the container body 1, three wire passage guide holes 25 formed in the metal fitting main body 2, and the wire pressing claw 21. Wire 3 with 3 wires and 3 bent parts 23 for wire pressure welding
This is a connector for main connection, and has a structure in which two protrusions 14 are formed on the container body 1. As described above, when two protrusions 14 are formed with one wire pressing portion 23 sandwiched therebetween, it is possible to control the positions of both sides of the wire pressing portion 23 by the two adjacent projections 14, 14. it can.

Although not shown in the drawings, similarly, for example, a connector for connecting five electric wires, connecting six electric wires, or connecting eight electric wires similarly has the protrusion 14 and the notch 27 corresponding thereto.
The position of the metal fitting main body 2 may be restricted by and.

Although the examples considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these examples, and is provided with the above-mentioned constitutional requirements referred to in the present invention. The invention can be carried out by appropriately modifying it within a range that achieves the object of the invention and has the following effects. For example, instead of the corrugated bent plate, the conductive plate 3 may be a thick plate material having a groove having a semi-circular cross section or a V shape cut on the surface or a flat plate shape, or the bottom of the container body 1 may be heated. An air flow port for discharging air is formed, the container body 1 is provided with an electric wire guide hole 41, and the lid body is fitted by opening the bottom portion. Further, the container body 1 and the lid body 4 are Can be modified to be opaque or transparent.

[0021]

As is apparent from the above description, the connector of the present invention can be satisfactorily electrically connected to another electric wire through the conductive plate only by inserting a bare single-wire electric wire. Although it is possible, the projection formed in the space of the container body is sandwiched by the notches formed mainly in the metal fittings, so that the position of the metal fittings can be restricted and the movement can be prevented. The positional relationship of the main body can be easily determined, and even if the size of the internal space of the container main body is made a little larger than the overall size of the main body of the metal fitting, the main body of the metal fitting moves or causes unpleasant noise. Since the wire guide hole formed in the lid and the wire passage guide hole mainly formed in the metal fitting can be surely aligned with each other without causing the occurrence of the electric wire, the electric wire can be smoothly inserted into the container body. thing It can be. Therefore, it is not necessary to match the internal space of the container body with the size of the outer shape of the metal fitting to the full extent, and it is possible to make a slightly larger design in advance, and it is easy to insert the metal housing into the inner space of the container main body. Therefore, the remarkable effect of being able to improve the productivity can be expected.

[Brief description of drawings]

FIG. 1 is an overall exploded perspective view showing an embodiment of the present invention.

FIG. 2 is an external perspective plan view of the product of the embodiment.

FIG. 3 is a rear view of the same.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

5 is a sectional view taken along line VV in FIG.

FIG. 6 is a sectional view of a portion corresponding to FIG. 5 showing another embodiment.

FIG. 7 is a sectional view of a portion corresponding to FIG. 5 showing still another embodiment.

[Explanation of symbols]

 (1) Container body (2) Main part of metal fittings (3) Conductive plate (4) Lid (11) Opening (13) Bottom wall (14) Protrusion (21) Wire pressing claw (22) Opposite base wall (26) Bottom Side wall (27) Notch (41) Wire guide hole

Claims (1)

[Claims] 1. A wire connector for inserting single wires from the same direction to electrically connect the wires to each other, the container body (1) having a bottomed rectangular tube and made of a synthetic resin material, and the container body.
A metal fitting internally provided in (1), which is mainly made of a hard metal having a plurality of electric wire pressing claws (21) ... (2), a copper conductive plate (3), and a container body (1) A lid (4) having a plurality of electric wire guide holes (41) for guiding the tip of an electric wire, the lid being fitted and fixed to the opening (11) of the The rectangular tubular container body (1) is the bottom wall (1) of the container body (1).
3) has a protrusion (14) protruding from the portion toward the inside of the cavity (10), and the metal fitting main body (2) is from the lower side of the base wall (22) facing the electric wire pressing claw (21). The lower side wall (26) bent and projected toward the front side has a notch (27), and the container body (1)
A wire connector in which the notch (27) is engaged with the protrusion (14) sandwiched therebetween.