JPH0690937B2 - Single wire type electric wire connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductor portion used for wiring inside a building such as a general house, a building, a factory or the like, for example, in the ceiling or from the distribution board to a terminal outlet. Relates to a single wire type electric wire connector used for connecting and branching a single wire type electric wire.

[0002]

2. Description of the Related Art Conventionally, wiring for the space above the ceiling has a diameter of 1-2.
A relatively thick single-line electric wire of mm is used. In order to electrically connect such electric wires, in the past, after cutting and peeling off the coating of the terminal part of each of the plurality of electric wires to be connected to make a bare state, the bare end of each electric wire is connected. Are inserted into one metal sleeve in a aligned state, and then the metal sleeves are crimped from the outside using a tool exclusively for crimping, and they are deformed and fixed so as not to come out so that they do not move relative to each other. The work involved winding a number of layers of vinyl insulation tape over the metal sleeve and the bare wire end that were connected together.

However, this work is usually carried out after the building is almost completed, and often during the use of the building after its completion, it is often carried out for the addition of lighting lamps. Since it is a work that must be performed in a narrow place such as the ceiling above the ceiling and in a place where lighting is not always sufficient, it is not always an easy work.

Therefore, a connector in which the end coating of the electric wire is peeled off to make a bare electric wire and the electric wires can be connected by inserting the bare electric wire is disclosed in, for example, Japanese Utility Model Publication No. 51-130485. As you can see it has already been proposed.

However, even in the case of the work using such a connector, it involves the work of peeling off the end coating of the electric wire to make it into a bare electric wire. As mentioned above, in a narrow place such as the ceiling above, in that the lighting must be performed in a insufficient place, it is similar to the case of the conventional work, and it cannot be said that the work is always easy. The underlying problem has not been resolved.

On the other hand, in the case of a signal wire, such as a telephone wire, which has an extremely small wire diameter and a weak load current, it is possible to push the thin insulating coating into the U-shaped contact without removing it. 2. Description of the Related Art A connector is known which is capable of making electrical connection by contacting a signal line while breaking a coating by a contact.

However, in the case of such a signal line, since the load current is weak and the coating is thin, it is sufficient to simply break the fragile coating and bring the contact into contact with the signal line. Since it is possible to energize, no special consideration is given to the forced connection to the U-shaped contact. Therefore, it is used in general households 10
To use it as it is to connect electric wires for electric power wiring, such as 0V electric wires and 200V power lines used in factories, is that the coating is thick enough to be incomparable, and abnormal heating occurs even if it simply contacts. There is a risk of abnormal heat generation, so it cannot simply be diverted.

[0008]

Therefore, the present invention takes advantage of the advantages of such a connector for signal lines, and in view of the problems of the conventional wiring method as described above, the power consumption is reduced. An object of the present invention is to provide a connector having a novel structure for a single-wire core wire for wiring, which can be easily and surely connected without removing an insulating coating, without removing the insulating coating, and reliably.

[0009]

The structure of the connector of the present invention invented to solve the problem will be described with reference to the reference numerals in the drawings. The connector is composed of a case body (11) and a case body (11). 11) and an insulating case (10) consisting of a lid body (14) for closing the opening surface, and a plurality of electric wire insertion holes (1) formed in either side wall (12) of the case body (11). From a plurality of individual contacts (20), (20) formed in a U-shape with a downward opening and formed at approximately the same height as the depth of the recess (17) made of a conductive material that is mounted in the recess (17) connected to (16) It will be.

[0010] Thus, the opposite legs formed at both legs (21), (21) of the U-shaped individual contact (20) at intervals smaller than the diameter of the single wire type core wire (S) of the covered electric wire (D). A downward-opening notch (22) with (25) and (25) is formed on each leg.
(21), (21) part is arranged so as to face the side wall (12) on which the wire insertion hole (16) is formed and the opposite side wall (15) thereof, and the individual contacts (20), which are adjacent to each other, (20) The structure is such that they are arranged so as to be pressed against each other.

Further, the individual contact (20) has a wall thickness and a notch (2) of a downward opening formed in both legs (21), (21).
The interval of 2), the core wire in the covered electric wire (D) between the notches (22)
In the posture in which (S) is press-fitted, the sum of the contact areas between the opposing walls (25) and (25) of the notches (22) and (22) and the core wire (S) is the cross-sectional area of the core wire (S). Can be set to be larger than.

Further, the thickness of the contact (20) and the notch (2
The distance of 2) is the same as above, between the cutouts (22) covered wire (D)
In the posture in which the core wire (S) is pressed in, the contact area between the facing walls (25) and (25) of one notch (22) and the core wire (S) is the core wire.
It can also be implemented as being set so as to be larger than the cross-sectional area of (S).

The insulating case (10) is composed of a case body (11).
The lid (14) and the lid (14) may be integrated by a foldable thin-walled connecting part (13) or a thin and short string-like connecting part, which are formed separately. May be. In short, the lid body (14) covers the recess (17) formed in the case body (11) and can be fixed to the case body (11) to insulate the individual contacts (20). If

Further, the individual contact (20) is not limited to one in which all side surfaces (23) having a U-shape come into contact with the adjacent contacts (20), and the U-shaped top plate (24). Contact (20) where only the side surface (23) of each leg contacts the adjacent contact (20), or contact where only the side surface (23) of both legs (21) are adjacent
It may be configured so as to be in contact with (20), and in short, any structure having a structure capable of sufficiently electrically connecting the individual contacts (20), (20) adjacent to each other may be used.

The cutouts (22) formed in both legs (21), (21) of the U-shaped individual contact (20) press the contact (20) against the electric wire (D). By electric wire
While breaking the insulating coating (Z) of (D), it reaches the single linear core wire (S) and bites into both sides thereof to electrically connect. In this way, each individual contact (20) electrically connected to the core wire (S) is also in pressure contact with the adjacent contact (20) and electrically connected to each other, and each individual contact (20) Electrical connection is also achieved at the same time.

[0016]

The function of the connector of the present invention is such that the individual contacts (2
0) can be easily made by a press working means using a metal plate having good conductivity, such as a hard copper plate or a brass plate, and the insulating case (10) is made of a synthetic resin material having good insulating property, for example PVC. It can be easily manufactured by injection molding means using materials such as PE and nylon.

In using the connector of the present invention,
Insert the end of the single wire (D) with the insulation coating on the tip into the recess (17) through the wire insertion hole (16) of the case body (11), and then touch the individual contact (20 ) Top plate (24)
Using a general tool such as pliers or pliers,
Push it toward the bottom of 7). Due to this pushing action, both legs (21) and (21) of the individual contact (20) cut the insulating coating (Z) of the electric wire (D) in the circumferential direction on both sides of the core wire (S) while cutting the core wire (S) on both sides. While press-contacting, this is pressed and deformed in the axial direction and brought into contact with the core wire (S). In the case of a 4-wire connector, repeat the same procedure for each of the four wire ends. After that, the lid body (14) is fitted to the case body (11).

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing the embodiments. This connector is a connector for connecting electric wires (D) each having a single-core wire (S) covered with an insulating coating (Z) as they are without peeling the coating. The one shown in the drawing of this embodiment is for 4-wire connection.
Needless to say, it can be used for connecting a wire or two wires, or connecting a large number of four or more wires.

The insulating case (10) made of an insulating material such as polystyrene resin has a suitcase shape, and the case body (11) having a bottomed rectangular tube and the lid body (14) are thin. It is formed so as to be integrally foldable via the connecting portion (13). The other side wall (1) facing the side wall (12) provided with the connecting portion (13)
At the upper end of 5), a hooking portion (19) having a protrusion (19a) for click-locking the hook-shaped protrusion (18) of the lid (14) is formed.

On the side wall (12) having the connecting portion (13) formed,
There are multiple, here four wire insertion holes (16),
These holes communicate with the recess (17) in the center of the body.
Then, when connecting the electric wire to the connector,
A plurality of, here four, downward-opening U-shaped individual contacts (20) made of a hard copper plate are prepared to be pressed into the inside of (17). In FIGS. 1 and 2 of the embodiments, the insulating case 10 and the individual contacts 20 are shown as being separated from each other in order to clarify the overall structure.

The two may be separated in this way,
Usually, the lower half of each leg (21) of each contact (20) is pre-inserted in the upper half of the recess (17) of the case body (11), and each contact (20) and the insulating case (10 ) And are not separated from each other.

The inlet portion (16a) of the wire insertion hole (16) is formed in a taper shape whose diameter is expanded outward so that the wire can be easily inserted.

Both legs (21), (2 of the U-shaped individual contact (20)
1) is a single wire core wire while breaking the insulation coating (Z) of the electric wire (D).
A notch (22) having a width that can reach (S) and dig into the surface layer is formed by recessing from the lower end side in the hanging direction of the leg (21), that is, in the direction perpendicular to the top plate (24). .

Each individual contact (20) has a side surface (23)
The outermost individual contacts are dimensioned to be in close contact with each other over the entire surface thereof, and the outer side edges (23) thereof are in close contact with the inner wall surface of the recess (17). In this way, all individual contacts will be in close contact with each other and electrically connected to each other.

At the time of connecting the electric wire, pliers are used for the upper surface of the top plate (24) of the individual contact (20) and the lower surface of the case body (11), and a tool generally used for connecting the electric wire, such as pliers, is used. Clamp it. This pinching is performed individually for each contact (20). As a result, the contact (20) reaching the bottom of the recess (17) while breaking the wire coating is
The height of the upper surface of 4) is set to be substantially the same as the upper surface of the recess (17). When the inner surface side of the lid body (14) is flat, the upper surface of the top plate (24) is the inner surface (14a) of the lid body (14) when the lid body (14) is covered with the case body (11). And each individual contact (20) is isolated.

Needless to say, the connector device according to the present invention is not limited to the 4-wire connection, but can be implemented as a 3-wire connection, a 2-wire connection, or a connection of 5 or more wires. Further, the electric wire insertion direction is not limited to the one in which all the electric wires are inserted from the same direction, and for example, four electric wires can be inserted one by one or two by turns from the opposite direction so that the electric wire insertion holes (16 ) May be formed alternately on the left and right.

Although the representative embodiments of the present invention have been described above, the present invention is not necessarily limited only to the structures of these embodiments, and has the constituent features of the present invention and achieves the object of the present invention. It can be appropriately modified within a range having the following effects. For example, the thin part that connects the case body and lid is
A string-shaped connecting portion may be used, or the case body and the lid may be separately formed and fitted to each other.

[0028]

As is apparent from the above description, the electrical connection between the electric wires in the connector of the present invention is
Since the individual contacts are inserted into the core wire with both legs by inserting the wire with insulation coating and the individual contacts are electrically connected, the work of electrically connecting between the single wires by the connector is significantly simplified. In addition, since the individual contacts bite into each electric wire at two places, there is an effect that the electric connection with the electric wire can be made extremely reliably and safely.

Further, the biting at two places is such that the total contact area between the core wire and the contact is equal to or more than the cross-sectional area of the electric wire, depending on the thickness of the material of the individual contact and the gap between the notches. The connection between high-capacity power lines is perfect. Therefore, problems such as insufficient energization and overheating due to excessive contact area will not occur. As described above, by using the connector of the present invention, the efficiency of wiring work in a narrow ceiling or the like can be improved, and there is no fear of impairing the safety of the connection point.

Further, since the connector according to the present invention uses individual contacts to connect to each electric wire individually, a special tool for large pressure is required when mounting the individual contacts. Without using the above, a sufficient external force can be applied to each individual contact by a normally used tool such as pliers, and reliable biting into the core wire without insulation coating is guaranteed. Further, since the electrical connection between the individual contacts that are surely bite into each other is guaranteed by the contact between the contacts, it is possible to expect a remarkable effect that the connection between the electric wires can be extremely easily and quickly performed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the overall shape.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a side view taken along line III-III in FIG.

FIG. 4 is a cross-sectional view showing a wire connection state corresponding to FIG.

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

[Explanation of symbols]

 (10) Insulation case (11) Case body (12) Side wall (14) Lid (15) Side wall (16) Wire insertion hole (17) Recess (20) Individual contact (21) Leg (22) Notch (S) Core wire (Z) Insulation coating (D) Electric wire

Claims (3)

[Claims] 1. An insulating case comprising a case body (11) and a lid body (14) which fits with the case body (11) and closes an opening surface.
(10) and a U-shaped downward opening made of a conductive material that is mounted in a recess (17) connected to a plurality of wire insertion holes (16) formed in one of the side walls (12) of the case body (11). A plurality of individual contacts (20), (2) formed at approximately the same height as the depth of the recess (17).
0) and both legs (2) of the U-shaped individual contact (20).
1) and (21) have notches (22) with downward openings with facing walls (25) and (25) formed at intervals smaller than the diameter of the single wire type core wire (S) of the covered electric wire (D), respectively. Formed on each leg (2
The individual contacts (20), (1), (21) arranged so as to face the side wall (12) on which the wire insertion hole (16) is formed and the opposite side wall (15) thereof and which are adjacent to each other. 20) A single wire type electric wire connection connector arranged so that they are pressed against each other. 2. The thickness of the individual contact (20) and both legs (2)
1), the interval of the notch (22) of the downward opening formed in (21), in the posture in which the core wire (S) in the covered electric wire (D) is pressed into the notch (22), both notches ( 22), (22) facing wall (25),
The single-wire electric wire connector according to claim 1, wherein the contact area between the core wire (S) and the core wire (S) is larger than the cross-sectional area of the core wire (S). 3. The thickness of the individual contact (20) and both legs (2)
1), the interval of the notch (22) of the downward opening formed in (21), in the posture in which the core wire (S) in the covered electric wire (D) is press-fit into the notch (22), one notch ( 22) Opposing walls (25), (2
The single wire type electric wire connecting connector according to claim 1, wherein the contact area between the core wire (S) and 5) is set to be larger than the cross-sectional area of the core wire (S).