JP2004235095A - Wire connector - Google Patents

Abstract

An end face of two wires is connected to each other.
A wire connector is schematically configured to include a holder and a connection tool. The holder 3 has an opening 6 and is formed such that a pair of insertion holes 8 into which the two wires 2 are inserted face and communicate with the opening 6. The holder 3 inserts the two wires 2 into the insertion holes 8 and holds the wires 2 in the opening 6 at predetermined intervals with the end faces 2a facing each other. The connection tool 4 has a U-shape, and has blades 11 at opposite ends of the U-shaped portion. The connecting tool 4 allows the blade 11 to bite into the two wires 2 exposed and held in the opening 6 of the holder 3 to electrically connect the two wires 2.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a wire connector for connecting a wire such as an electric wire, and more particularly, to a wire connector for connecting two wires by abutting end faces thereof.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a wire connector for wiring connection of a vehicle, a wire connector with a structure in which when a wire is caulked with a metal plate, the coating of the wire is peeled off to conduct electricity is generally known.
[0003]
Further, there is known an electric wire connection device for connecting various electric wires and wiring in an electric appliance such as a lighting appliance.
Prior art document information related to the invention of this application includes the following.
[0004]
[Patent Document 1]
JP-A-5-152013
FIG. 10A is a perspective view showing a use state of the electric wire connection device disclosed in Patent Document 1, and FIG. 10B is a perspective view showing a power supply wire with a coating removed.
[0006]
The electric wire connection device 51 shown in FIG. 10 is schematically configured including a body 52 and an electric wire connection guide 53. The body 52 is provided with a conductive metal fitting 54 made of a conductive thin plate spring material such as a copper alloy having one end and a press-contact terminal formed of an insulating plastic. The electric wire connection guide 53 is made of an insulating plastic, and is pivotally attached to the concave portion 55 of the body 52 so as to be fitted therein. The electric wire connection guide 53 has an electric wire insertion hole 56 opened on two opposing side surfaces. The electric wire connection guide 53 has an insulative cutting blade 58 for stripping the covering of the electric wire 57. The cutting blade 58 includes a coating stripping blade 62 that strips the protective coating 59 and the insulating coating 60 of the electric wire 57 along a plane substantially parallel to both the pair of core wires 61, and a protective coating 59 of the electric wire 57 along the length direction thereof. And has a cutting blade 63 for separating between the insulating coatings 60 of the pair of core wires 61.
[0007]
When a power supply wire such as a VVF cable is connected by using the wire connection device 51, the tip of the wire 57 in a cut state is inserted through the wire insertion hole 56 of the wire connection guide 53. By inserting the electric wire 57, the protective coating 59 and the insulating coating 60 of the electric wire 57 are peeled off by the coating stripping blade 62 of the cutting blade 58 to expose the core wire 61, and the two electric wires 57 are separated by the cutting blade 63 of the cutting blade 58. Divided into Thereafter, when the electric wire connection guide 53 is rotated and locked and fixed, the core wire 61 is connected to the press contact terminal of the conductive metal fitting 54, and the connection of the electric wire 57 is completed.
[0008]
[Problems to be solved by the invention]
However, the generally known wire connector has a problem that a force is required for caulking an electric wire with a metal plate. In addition, when caulking, the caulking force is not constant, and there is a possibility that a connection failure may occur. In addition, the width of the blade groove is increased at the time of crimping, which is not suitable for repeated use. Furthermore, when two electric wires are made into one by using this kind of wire connector, the end faces of the two electric wires cannot be connected to each other, and the cue length cannot be fixed. As a result, the connection portion of the electric wire becomes larger than two electric wires, and there is a problem that it takes up an unnecessary space and becomes an obstacle. Further, in this type of wire rod connector, since the blade and the holder are integrated, it is necessary to prepare a plurality of types of wire rod connectors depending on the thickness of the wire.
[0009]
Further, according to the electric wire connection device 51 of FIG. 10, although some of the problems of the wire connector described above can be solved, the cutting blade 58 is provided integrally with the electric wire connection guide 53, and the cutting blade 58 cannot be replaced. Therefore, it was possible to cope only with the connection of the electric wire 57 having a fixed thickness. Therefore, similarly to the wire connector described above, it is necessary to prepare a plurality of wire connection devices 51 corresponding to the thickness of the wire 57.
[0010]
Moreover, there has been no conventional wire connector including the wire connection device 51 of FIG.
[0011]
Then, this invention is made | formed in view of the said problem, and an object of this invention is to provide the wire connector which can connect the end surfaces of two wires by butting.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a wire connector according to the first aspect of the present invention includes a holder that holds two wires at a predetermined interval with their end faces facing each other,
A connector for connecting the two wires held by the holder.
[0013]
The invention according to claim 2 has an opening, and a pair of insertion holes into which two wires are inserted are formed so as to face and communicate with the opening, and the two wires are inserted into the insertion holes. A holder that is inserted and held in the opening at a predetermined interval with the end faces facing each other;
A connector for connecting the two wires held in the opening by being pushed into the opening of the holder.
[0014]
According to a third aspect of the present invention, in the wire connector according to the second aspect, a positioning plate for positioning and holding the end faces of the two wires inserted from the two insertion holes is provided in the opening of the holder. It is characterized by having.
[0015]
According to a fourth aspect of the present invention, in the wire connector according to the second aspect, the connecting member has a U-shape, and a groove for sandwiching the two wires is formed in a connecting portion facing the U-shaped flat portion. It is characterized by being formed.
[0016]
According to a fifth aspect of the present invention, in the wire connector according to the second aspect, the connecting member has a U-shape, and a blade that cuts into the two wires is formed at a connecting portion facing the U-shaped flat portion. It is characterized by being formed.
[0017]
According to a sixth aspect of the present invention, in the wire connector according to the fifth aspect, the blade comprises a double blade or a single blade.
[0018]
According to a seventh aspect of the present invention, in the wire connector according to the second aspect, the two insertion holes are tapered toward the opening.
[0019]
According to an eighth aspect of the present invention, in the wire connector according to any one of the first to seventh aspects, the two wires are made of electric wires.
[0020]
According to a ninth aspect of the present invention, in the wire connector according to the eighth aspect, an insulator is provided on a surface of the connection tool.
[0021]
According to a tenth aspect of the present invention, in the wire connector according to the eighth aspect, the holder is provided with an openable / closable cover.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a view showing a first embodiment of a wire connector according to the present invention, FIG. 2 is a perspective view of a holder in the wire connector of FIG. 1, FIG. 3 is a perspective view of a connector in the wire connector of FIG. FIGS. 2A to 2C are cross-sectional views showing a procedure for connecting two wires using the wire connector of FIG.
[0023]
As shown in FIG. 1, a wire connector 1 </ b> A (1) connects end faces 2 a of two wires 2 (for example, covered electric wires) to face each other, and includes a holder 3 and a connector 4. Schematically configured.
[0024]
The holder 3 is made of, for example, an insulating member such as POM. As shown in FIG. 2, an opening 6 having a predetermined depth is formed in the upper surface 5a of the main body 5 having a rectangular shape. Guide portions 7 are formed on opposite sides 5b of the main body 5 so as to be linear with the opening 6 therebetween. In the example of FIG. 2, the guide 7 has a cylindrical shape. As shown in FIG. 2, a wire insertion hole 8 is formed at an axial center LL of the guide portion 7 so as to communicate with the opening 6.
[0025]
The shape of the guide portion 7 is not limited to a columnar shape as long as the guide portion 7 has a wire insertion hole 8 through which the wire 2 is inserted and guided. The guide portion 7 shown in FIG. 2 is configured to protrude from the opposite side surfaces 5b, 5b of the main body 5, but the thickness of the both side surfaces 5b, 5b is increased, and the thick portion is formed by the guide portion 7 If the wire insertion hole 8 is formed, the protruding portion from the main body 5 can be eliminated.
[0026]
As shown in FIGS. 2 and 4, the wire insertion hole 8 has a tapered surface 8 a that tapers toward the opening 6. When the wire 2 is inserted into each of the two wire insertion holes 8, the tapered surface 8 a guides the two wires 2 toward the opening 6.
[0027]
As shown in FIG. 2, a positioning plate 9 for positioning the two wires 2 inserted from the wire insertion holes 8 is formed in the opening 6. The positioning plate 9 is lower than the upper surface 5 a by the thickness of the connector 4 so that when the connector 4 is pushed into the opening 6, the surface of the connector 4 is substantially flush with the upper surface 5 a of the holder 3. It is suspended at the position. As shown in FIG. 4, when the wire 2 is inserted from each of the two wire insertion holes 8, the positioning plate 9 performs cueing of the two wires 2 by abutting the end surfaces 2a of the wires 2. are doing.
[0028]
As shown in FIG. 4, the connecting tool 4 connects the two wires 2 held by the holder 3, and is formed to have a size that can be attached to the opening 6 of the holder 3. When the wire 2 is an electric wire or the like that requires conductive connection, the connecting tool 4 is formed of a conductive member such as stainless steel. As shown in FIG. 3, the connecting member 4 is formed in a U-shape by bending both sides of the flat portion 4a at 90 °. At the center of the connecting portion 4b opposed to both sides of the flat portion 4a, a rectangular long groove 10 whose one end is open is formed.
[0029]
A pair of blades 11 for connecting the two wires 2 are formed on both sides of the long groove 10 on both sides of the connecting portion 4b. 1 and 3, the pair of blades 11 are formed by both blades. The tip of the blade 11 is formed to be sharp in order to reduce the initial load on the wire 2 at the time of caulking to reduce caulking force.
[0030]
As shown in FIG. 1, the connection tool 4 has a width H1 in the short direction (a direction orthogonal to the insertion direction arrow A of the wire 2 shown in FIG. 1) that is substantially equal to the width H2 of the opening 6. Is formed. Thus, when the wire 2 is crimped and connected, a force acts in a direction in which the groove 10 spreads due to the crimping. However, the longitudinal side surface of the connecting tool 4 is pressed by the wall surface of the opening 6 of the holder 3, and Prevents spreading.
[0031]
Next, a procedure in the case where the wire connector 1A having the above configuration is used to electrically connect and connect an electric wire as the wire 2 will be described.
[0032]
As shown by an arrow A in FIG. 4A, two electric wires 2 to be connected are inserted one by one from a wire insertion hole 8. When the electric wire 2 is inserted, the electric wire 2 is guided into the opening 6 along the center line indicated by the one-dot chain line in FIG. 4B by the tapered surface 8 a of the wire insertion hole 8. When the end surfaces 2a of the two electric wires 2 come into contact with the positioning plate 9 and are positioned (FIG. 4 (b)), the connecting tool 4 is attached to the holder 3 with the tip of the blade 11 facing the electric wire 2 side. Push into the opening 6. Thereby, the electric wire 2 is caulked and electrically connected. That is, when the connecting tool 4 is pushed into the opening 6, the blade 11 of the connecting tool 4 peels off the coating of each electric wire 2 and cuts into the core wire to be fixed (FIG. 4C). As a result, the two electric wires 2 are positioned by contacting the end faces 2 a of the electric wires 2 with the positioning plate 9, and are electrically connected to each other via the connection tool 4 with the end faces 2 a facing each other.
[0033]
Next, FIG. 5 is a view showing a second embodiment of the wire connector according to the present invention. Note that the same components as those of the wire connector according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0034]
In the wire connector 1B (1) of the second embodiment, an insulating member 15 is formed on the surface of the connection tool 4 in addition to the configuration of the wire connector 1A of the first embodiment. The insulating member 15 is made of, for example, an insulating resin, and is formed by dip forming on the surface of the connecting tool 4 corresponding to the handle of the blade 11.
[0035]
According to this configuration, when the connecting member 4 is formed of a conductive member, external contact with the connecting member 4 can be avoided by the insulating member 15 and electrical safety can be ensured.
[0036]
When two wires 2 are connected by using the wire connector 1B, the two wires 2 are inserted one by one from the wire insertion hole 8 similarly to the wire connector 1A of the first embodiment. With the end surfaces 2a of the two wires 2 abutting against the positioning plate 9 and positioned, the connecting tool 4 is pushed into the opening 6 of the holder 3 to caulk the wires 2.
[0037]
Next, FIG. 6 is a view showing a third embodiment of the wire connector according to the present invention. Note that the same components as those of the wire connector according to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0038]
The wire connector 1C (1) of the third embodiment has a cover 16 on the main body 5 of the holder 3 in addition to the configuration of the wire connector 1A of the first embodiment described above. The cover 16 is provided on the upper surface 5 a of the main body 5 so as to be able to open and close so as to cover the connecting tool 4 when the two wires 2 are caulked by the connecting tool 4. At the tip (open end) of the cover 16, a key-shaped claw portion 16a is provided along the longitudinal direction of the main body 5. A locking projection 17 is formed on the upper end edge of the main body 5 along the longitudinal direction of the main body 5 so that the claw 16a of the cover 16 is locked.
[0039]
According to this configuration, after the two wires 2 are caulked to one by the connecting tool 4, the cover 16 is closed and the claws 16 a are locked to the locking projections 17, so that the connecting tool 4 is secured by the cover 16. Covered. Accordingly, when the connecting member 4 is formed of a conductive member, external contact with the connecting member 4 can be avoided by the insulating member 15, and electrical safety can be ensured.
[0040]
When the two wire rods 2 are connected using the wire rod connector 1C, the two wire rods 2 are inserted one by one from the wire rod insertion hole 8, similarly to the wire rod connector 1A of the first embodiment. With the end surfaces 2a of the two wires 2 abutting against the positioning plate 9 and positioned, the connecting tool 4 is pushed into the opening 6 of the holder 3 to caulk the wires 2. Thereafter, the cover 16 is closed and the claw portion 16 a is locked to the locking projection 17.
[0041]
Next, FIGS. 7 and 8 show another configuration example of the connecting tool 4 used in the wire connectors 1A to 1C of the above-described embodiments.
[0042]
In the connecting tool 4 shown in FIG. 7, the blades 11 formed on both sides of the long groove 10 are configured as single blades. The blade 11 has a sharply formed inner front end portion in the longitudinal direction, and an outer portion formed as an inclined surface to constitute a single blade. According to this configuration, when the wire 2 is crimped, the blade 11 bites into the wire 2 near the opening 6 of the holder 3 and is connected to the wire 2. .
[0043]
The connecting device 4 shown in FIG. 8 has a wedge shape in which the long groove 10 formed in the connecting portion 4b becomes narrower in the direction of the flat portion 4a of the connecting device 4. According to the configuration using the connecting tool 4, it is possible to cope with the connection of the wires 2 having a plurality of types of wire diameters. When connecting the two wires 2, the connecting tool 4 is pushed into the opening 6 of the holder 3, and the wire 2 is inserted into the long groove 10.
[0044]
In addition, the connecting tool 4 of FIG. 8 may have a configuration in which a blade 11 composed of a double blade or a single blade is provided on both sides of the long groove 10. In this case, the blade 11 bites into the wire 2, and a part of the wire 2 is sandwiched in the elongated groove 10 of the bite 11, so that more reliable connection can be performed.
[0045]
The wire connector 1 described above can be used, for example, for wiring connection in the power supply device shown in FIGS. 9 and 10.
[0046]
FIG. 9 is a conceptual diagram of a power supply device employing the wire connector according to the present invention. The power supply device 21 illustrated in FIG. 9 includes a power supply device 22 that outputs an alternating current, and a power distribution device 23.
[0047]
The power supply device 22 includes a power supply 24, an oscillation circuit 25, a frequency dividing circuit 26, and a driving circuit 27. The power supply 24 outputs a DC current to each of the oscillation circuit 25, the frequency dividing circuit 26, and the driving circuit 27 as a driving power supply. The oscillation circuit 25 generates and outputs a signal of a predetermined frequency. The frequency dividing circuit 26 divides the frequency of the oscillation signal output from the oscillation circuit 25 to a desired frequency and outputs a frequency-divided signal. The drive circuit 27 outputs an AC current by switching the frequency-divided signal output from the frequency-divider circuit 26 in a positive / negative direction at a predetermined cycle.
[0048]
The power distribution device 23 includes a wiring 28, a power distribution unit 29, and a power-supplied body 30. The wiring 28 is annularly conductively connected by the above-described wire connector 1, and carries an alternating current electromagnetically induced and output from the drive circuit 27 of the power supply device 22. The power distribution means 29 is provided in the vicinity of the ring-shaped wiring 28, and performs power distribution by causing a bidirectional current electromagnetically induced by an alternating current flowing through the wiring 28 to flow through a copper wire wound around a magnetic body. is there. The power-supplied body 30 is connected to a winding of the power distribution unit 29 and is driven by a bidirectional current flowing through the winding.
[0049]
In the power supply device 21 having the above configuration, the oscillation circuit 25 is driven by the power supply 24 to generate a signal of a predetermined frequency. The oscillation signal generated by the oscillation circuit 25 is input to the frequency dividing circuit 26. The frequency dividing circuit 26 outputs to the driving circuit 27 a frequency dividing signal for dividing the input oscillation signal to a desired frequency and a switching signal for switching between the positive and negative directions. The drive circuit 27 outputs an AC current by switching a signal of a desired cycle in a positive or negative direction at a fixed cycle based on the input frequency-divided signal and the switching signal. The alternating current output from the drive circuit 27 flows through the wiring 28 via an input terminal separately provided in the wire connector 1. The alternating current flowing through the wiring 28 is electromagnetically induced in a magnetic winding of the power distribution unit 29. As a result, a bidirectional current flows through the magnetic winding of the power distribution means 29. Then, this bidirectional current is supplied as power to the power-supplied body 30 connected to both ends of the winding of the power distribution unit 29.
[0050]
When the power supply device 21 is used as an illumination device such as a Christmas tree, for example, a plurality of wirings 28 formed in a ring are prepared, and the wirings 28 are decorated to connect all the wirings 28. Is more efficient than decorating with a single wire. In such a case, if the wire connector 1 of the present example is used, the wiring 28 can be easily connected in a ring shape. Further, it is possible to easily cope with the case where the wiring 28 is extended.
[0051]
As described above, according to the wire connector of the present example, it is possible to easily connect the two wire materials 2 with the end faces 2a facing each other. In this case, if the connecting tool 4 is configured to have the blade 11 having a sharpened tip, the initial load at the time of crimping can be reduced, and the crimping force can be reduced.
[0052]
If the wire insertion hole 8 formed in the guide portion 7 of the holder 3 has a tapered surface 8a tapering toward the opening 6, the wire 2 inserted from the wire insertion hole 8 is guided to the opening 6. And the two wires 2 can be positioned.
[0053]
With the configuration in which the positioning plate 9 is provided in the opening 6 of the holder 3, the two wires 2 can be located at the beginning, and the wires 2 can be easily positioned.
[0054]
Since the connecting tool 4 for connecting the two wires 2 is provided separately from the holder 3, the connecting tools (for example, the width of the long groove 10 and the shape of the blade 11 are different according to the wire diameter (thickness) of the wire 2. This can be dealt with simply by replacing the object 4. Thus, the holder 3 can be used as a common component, and cost can be reduced.
[0055]
If the width H1 in the short direction (direction orthogonal to the wire 2) of the connecting tool 4 is formed to be substantially equal to the width H2 of the opening 6 of the holder 3 in the short direction, the connecting tool 4 can be used. The blade 11 can be restricted to a fixed blade width, and unstable crimping force due to deformation of the blade 11 can be avoided. At this time, the connection tool 4 is slightly pressed into the opening 6 of the holder 3, so that it is possible to prevent a simple dropout.
[0056]
If the insulating member 15 is provided on the surface of the flat portion corresponding to the handle portion of the blade 11 of the connecting tool 4, when the connecting tool 4 is a conductive member, electrical contact with the connecting tool 4 from the outside is avoided. Can be avoided and electrical safety can be ensured. The same effect can be obtained in a case where the cover 16 is provided on the holder 3 so as to cover the connecting member 4 formed of a conductive member when the wire 2 is crimped.
[0057]
The two wires 2 are connected by one line with the end faces 2a facing each other, and the holder 3 can be configured with a size close to the wire diameter of the wires 2, so that no extra space is required and other parts are used. It doesn't get in the way.
[0058]
By the way, in the above-described embodiment, the connection of an electric wire has been described as an example of the wire 2. However, the present invention is not limited to the electric wire, and can be used for connecting wires made of a material that is not cut by the long groove 10 or the blade 11. As a specific example, a case has been described in which the wire connector 1 is connected to the wiring 28 of the power supply device 21 shown in FIG. 9 in a ring shape. However, as long as the end surfaces 2a of the two wires 2 are connected to face each other, various connections are made. It can be used for connection of various wires.
[0059]
Further, although the holder 3 has been described as having a rectangular shape, for example, the holder 3 may have a columnar shape or another shape. At this time, if the size of the holder 3 is made as close as possible to the wire diameter of the wire 2, the connection portion of the wire 2 can be made compact without taking extra space.
[0060]
【The invention's effect】
As is clear from the above description, according to the wire connector of the present invention, it is possible to easily connect the two wire materials with their end faces facing each other. At this time, if the connecting tool has a blade having a sharpened tip, the initial load at the time of crimping can be reduced, and the crimping force can be reduced.
[0061]
If the wire insertion hole is configured to have a tapered surface that tapers toward the opening, the wire inserted from the insertion hole can be guided and fixed to the opening, and the two wires can be positioned.
[0062]
With a configuration in which a positioning plate is provided in the opening of the holder, the two wires can be caught and the wires can be easily positioned.
[0063]
Since the connection tool for connecting the two wires is provided separately from the holder, it is only necessary to change the connection tool (for example, one with a different groove width or blade shape) according to the wire diameter (thickness) of the wire. Can respond. Thus, the holder can be used as a common component, and cost can be reduced.
[0064]
If the insulating member is provided on the surface of the flat portion corresponding to the handle of the blade of the connecting tool, when the connecting tool is a conducting member, it is possible to avoid electrical contact with the connecting tool from outside, and Security can be ensured. The same effect can be obtained in the case where the holder is provided with a cover so as to cover the connecting member formed of the conductive member when the wire is crimped.
[0065]
In this configuration, two wires are connected by one line with their end faces facing each other, and the holder can be configured with a size close to the wire diameter of the wires, so that no extra space is required and other components are obstructed. Not even.
[Brief description of the drawings]
FIG. 1 is a view showing a first embodiment of a wire connector according to the present invention.
FIG. 2 is a perspective view of a holder in the wire rod connector of FIG. 1;
FIG. 3 is a perspective view of a connection tool in the wire connector of FIG. 1;
4 (a) to 4 (c) are cross-sectional views showing a procedure for connecting two wires using the wire connector of FIG.
FIG. 5 is a view showing a second embodiment of the wire connector according to the present invention.
FIG. 6 is a view showing a third embodiment of the wire connector according to the present invention.
FIG. 7 is another configuration diagram of the connector used for the wire connector of each embodiment.
FIG. 8 is another configuration diagram of the connector used for the wire connector of each embodiment.
FIG. 9 is a conceptual diagram of a power supply device employing the wire connector according to the present invention.
FIG. 10 is a view showing an example of an electric wire connection device disclosed in Japanese Patent Application Laid-Open No. 5-152013.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... wire connector, 2 ... wire, 2a ... end face, 3 ... holder, 4 ... connector, 4a ... flat part, 4b ... connection part, 6 ... opening, 8 ... wire insertion hole, 9 ... positioning plate, 10 ... Long groove, 11: blade, 15: insulating member, 16: cover.

Claims (10)

A holder for holding the two wires at predetermined intervals with their end faces facing each other;
A connector for connecting the two wires held by the holder. A pair of insertion holes, each having an opening, into which two wires are inserted are formed so as to face and communicate with the opening, and the two wires are inserted into the insertion holes so that end faces face each other. A holder which is held in the opening at a predetermined interval in a state where
A connector for pushing the holder into the opening and connecting the two wires held in the opening. 3. The wire connector according to claim 2, wherein a positioning plate for positioning and holding an end surface of the two wires inserted from the two insertion holes is provided in the opening of the holder. The wire connector according to claim 2, wherein the connector has a U-shape, and a groove that sandwiches the two wires is formed in a connecting portion facing the U-shaped flat portion. . The wire connector according to claim 2, wherein the connector has a U-shape, and a blade that cuts into the two wires is formed at a connection portion facing the U-shaped flat portion. . The wire connector according to claim 5, wherein the blade is a double blade or a single blade. 3. The wire connector according to claim 2, wherein the two insertion holes are tapered toward the opening. The wire connector according to any one of claims 1 to 7, wherein the two wires are made of electric wires. The wire connector according to claim 8, wherein an insulator is provided on a surface of the connection tool. 9. The wire connector according to claim 8, wherein the holder is provided with an openable / closable cover.

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