JPH05152013A - Wire connection device - Google Patents

Abstract

PURPOSE:To dispense with peeling a covering during the process of wire connection, and facilitate the wire connection without a jig or a tool. CONSTITUTION:A wire connection device 21 is provided with a body 23, which is made of insulating plastic possessing a conductive metal fitting 22, being made of conductive thin plate spring material, such as copper alloy or the like, on whose one end a pressure touching terminal is formed, and a wire connection guide 25, which is made of insulating plastic possessing an insulating blade 24 for peeling of a wire covering and is attached so as to be able to be fitted in the recess portion 30 of the body 23. When a power supply cable 26, such as a VVF cable or the like is inserted to the power supply connection guide 25 so as to be held, the protecting covering 27 and the insulating covering 28 of the power supply cable 26 are peeled by the blade 24 so as to expose cores 29, and so as to fit the wire connection guide 25 in the recess portion 30 of the body 23, so that the cores 29 of the power supply cable 26 are connected to the conductive metal fitting 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire connecting device capable of connecting electric wires by a simple operation without using a jig or a tool.

[0002]

2. Description of the Related Art As a wire connection device for connecting a power supply wire such as a VVF cable and a wire in an electric appliance such as a lighting appliance, a wire connecting device as shown in FIG. 5 has been conventionally known. The electric wire connecting device 1 is a so-called quick-connect terminal, and is a conductive metal fitting 2 in which a copper alloy is formed into a substantially U-shaped cross section, and the conductive metal fitting 2
And a locking spring 3 formed by bending a stainless steel spring material held by the above. Then, between the connecting surface 4 of the conductive metal fitting 2 and the locking piece 5 and the contact piece 6 facing the connecting surface 4, the coating 8 at the end of the electric wire 7 is peeled off with a wire stripper or the like, and the copper core wire 9 is inserted. Then, the core piece 9 of the electric wire 7 is pressed against the connecting surface 4 of the conductive fitting 2 by the locking piece 5 and the contact piece 6 while the locking piece 5 of the locking spring 3 prevents the electric wire 7 from connecting to the conductive fitting 2. ing. The electric wire 7 connected to the conductive fitting 2 is a soldering terminal 10 formed at one end of the conductive fitting 2.
Is connected to an electric wire (not shown).

This electric wire connecting device 1 has an advantage that contact pressure can be applied by a locking spring so that the connection is reliable and can be used for connecting a power supply electric wire such as a VVF cable through which a relatively large current flows. The coating 8 of the electric wire 7 must be peeled off in advance, a tool for peeling the coating 8 is required, and there is a problem that connection of the electric wire 7 takes time.

On the other hand, the electric wire connecting device 11 shown in FIG.
Is conventionally known. This wire connecting device 11 is known as a pressure contact terminal, and has a connecting piece 13 formed by bending a conductive metal fitting 12 made of a copper alloy thin plate in the vicinity of one end into a substantially L shape and further folding back the tip thereof. , The guide portion 14 that is open toward the folded-back portion and is inclined toward the opening
The connection groove 15 having the above is provided. In the electric wire connecting device 11, the inclined surface of the guide portion 14 has the cutting blade 16
When the electric wire 17 is positioned and pushed in by a jig or a tool, the coating 18 of the electric wire 17 is first cut open by the cutting blade 16. Then, when it is further pushed in, the exposed core wire 19 is held by being held in contact with the side edge of the connection groove 15 so as to be sandwiched, and the electric wire 17 is connected. The electric wire 17 connected to the conductive fitting 12 is connected to an electric wire (not shown) connected to a soldering terminal 20 formed at one end of the conductive fitting 12.

This wire connecting device 11 has the advantage that it is not necessary to remove the coating of the wire 17 in advance, and it does not require much labor to connect the wire 17, but a dedicated jig for pushing the wire 17 is used. There is a problem that it is necessary and that a considerably large force needs to be applied when inserting the core wire 19 into the connection groove 15 of the connection piece 13.

[0006]

SUMMARY OF THE INVENTION The problem to be solved is to realize an electric wire connecting device which can be easily connected without using a jig or a tool for peeling the coating when connecting an electric wire.

[0007]

According to the present invention, there is provided a cutting blade for stripping a protective coating and an insulating coating of a power source electric wire inserted in an electric wire insertion hole, and the protective coating and the insulating coating are stripped and exposed by the cutting blade. It is provided with a conductive metal fitting that comes into contact with the core wire of the power supply wire.

[0008]

1 shows an embodiment of the present invention, which will be described below with reference to the drawings.

This wire connecting device 21 is made of an insulating plastic body 23 made of a conductive thin leaf spring material such as copper alloy and having a conductive metal fitting 22 having a pressure contact terminal formed at one end.
And an electric wire connection guide 25 which is made of an insulating plastic having an insulating cutting edge 24 for stripping off the electric wire and is fitted into the recess 30 of the body 23 so as to be fittable. When the power supply wire 26 such as a VVF cable is inserted and held in the power supply connection guide 25, the cutting wire 24 removes the protective coating 27 and the insulating coating 28 from the power supply wire 26 to remove the core wire 29.
To expose the wire connection guide 25 to the concave portion 3 of the body 23.
The core wire 29 of the power supply wire 26 is connected to the conductive metal fitting 22 when it is fitted to zero.

The body 23 is formed with a recess 30 having an opening on one side surface and an upper surface, and a pair of conductive metal fittings 22 are attached with pressure contact terminals at one end thereof being arranged at the back of the recess 30. In the concave portion 30 of the body 23, an insulating rib is provided between the pair of conductive metal fittings 22 to secure an insulating distance between the conductive metal fittings 22 and the pair of core wires 29 of the power supply wire 26 connected to the conductive metal fitting 22. 31 is formed.

The conductive metal fitting 22 has one end located in the recess 30 and the other end to which a lead wire for wiring in the device (not shown) is connected.

The wire connection guide 25 rotates to rotate the body 2.
The rotation support portion 32 is attached to the body 23 while being supported by the rotation shaft so that the rotation support portion 32 can be fitted into the recess 30. The side surface of the wire connection guide 25 opposite to the rotation shaft that supports the rotation support portion 32 is engaged with the body 23 when fitted into the recess 30 of the body 23 to maintain the fitted state in the body 23. Locking claws 33 are formed for the purpose. The electric wire connection guide 25 is formed with electric wire insertion holes 34 that open on two opposite side surfaces. The wire insertion hole 34 is open at both ends of the wire 23 facing the bottom surface of the recess 30 of the body 23, and the cutting blade 24 is arranged at the outer opening.

The cutting blade 24 is a protective coating 2 for the power supply wire 26.
7 and the insulating coating 28, the coating stripping blade 35 for stripping the pair of core wires 29 along a plane substantially parallel to both, and the protective coating 27 of the power supply wire 26 along the lengthwise direction of the insulating coating 28 of the pair of core wires 29. It has a dividing blade 36 which divides between each other.

The core wire 29 of the power supply wire 26 is attached to the conductive fitting 22 in the opening at the back of the wire insertion hole 34 of the wire connection guide 25.
An electric wire connection guide portion 37 is formed to hold each core wire 29 in a predetermined position when connecting the core wires 29 to each other. The electric wire connection guide portion 37 separates the pair of core wires 29 from each other to secure an insulation distance. A separation wall 38 is formed.

When connecting the power supply electric wire 26 to the electric wire connecting device 21, first, the power supply electric wire 26 in a state of being cut off.
Insert the tip of the wire into the wire insertion hole 34 of the wire connection guide 25. Then, the coating stripping blade 35 of the cutting blade 24 strips the protective coating 27 and the insulating coating 28 of the power supply wire 26, and the dividing blade 36 of the cutting blade 24 divides the power supply wire 26 into two parts. The insulation coating 28 is peeled off, and the power supply wire 26 divided into two parts is located in the wire connection guide portion 37. Next, when the wire connection guide 25 is rotated to fit into the recess 30 of the body 23 and the locking claw 33 is locked, the core wire 29 is connected to the pressure contact terminal of the conductive fitting 22, and the wire connection is completed. At this time, the stripped protective coating 27 and insulating coating 28 are located between the recess 30 of the body 23 and the wire connection guide 25 and do not interfere with the connection.

In this wire connection device 21, the power supply wire 26
Before connecting the protective coating 27 and insulating coating 28
There is no need to peel off, no jigs or tools are required, and connection is easy,
The conductive metal fitting 22 comes into contact with the core wire 29 of the power supply wire 26, so that the connection can be reliably established.

FIG. 2 shows another embodiment of the present invention. This wire connecting device 41 is different from the previous embodiment in the structure in which the protective coating 47 and the insulating coating 48 of the power supply wire 46 are removed. There is. In the electric wire connecting device 41, a covering stripping tool 44 as a cutting blade is attached to the electric wire connecting guide 45 so that the electric wire connecting device 45 can project and retract in an electric wire inserting hole 54 formed in the front surface of the electric wire connecting guide 45. Wire connection guide 4
The wire insertion hole 54 of No. 5 is also opened as a connection opening 56 on the surface of the body 43 facing the bottom surface of the recess 50. Then, when the wire connection guide 45 is fitted into the recess 50 of the body 43, the conductive metal fitting 42 attached to the body 43 enters the wire connection guide 45 through the connection opening 56, and the conductive metal fitting 42 is attached to the core wire 49 of the power supply wire 46. Connected.

The coating stripping tool 44 has a coating stripping blade 55 at the inner end of the electric wire connection guide 45, and the power supply electric wire 46 is inserted into the electric wire insertion hole 54 and then pushed into the electric wire connection guide 45 to protect the power supply electric wire 46. The coating 47 and the insulating coating 48 are peeled off. An opening is provided substantially in the center of the coating stripping tool 44, and the conductive metal fitting insertion hole 5 through which the conductive metal fitting 42 is inserted when the electric wire connection guide 45 is fitted into the recess 50 of the body 43.
It is 7. Further, the outer tip of the covering stripping tool 44 is
It is an operation section for pushing the sheath stripping tool 44 into the electric wire connection guide 45, and the electric wire connection guide 45 is attached to the body 43.
Also serves as a locking portion 53 that engages with.

In the electric wire connecting device 41, as in the previous embodiment, it is possible to easily connect the power supply electric wire 46 without needing to peel off the protective coating 47 and the insulating coating 48 in advance before connecting the power electric wire 46, without using any jig or tool. The conductive metal fitting 42 comes into contact with the core wire 49 of the power supply wire 46, so that the connection can be reliably established.

FIG. 3 shows still another embodiment of the present invention. In this wire connecting device, a wire insertion hole formed in an insulative body (not shown) has a substantially triangular cross section near the tip. This conductive metal fitting 61 is installed,
The cutting blade 62 is formed at the tip of the
The contact piece 63 is integrally formed inward of the first cutting blade 62. In this wire connecting device, when the power supply wire 64 is inserted, the conductive metal fitting 61 hits the tip of the power supply wire 64, the protective coating 65 and the insulating coating 66 of the power supply wire 64 are stripped off by the cutting blade 62, and the exposed core wire 67 is exposed. The contact piece 63 abuts on the peripheral surface of and is electrically connected.

In FIG. 4, instead of the conductive metal fitting 61 of the embodiment shown in FIG. 3, the conductive metal fitting 71 has a substantially cylindrical cross section near its tip.

Also in these embodiments, the same effect as that of the previous embodiment is obtained.

[0023]

As described above, the electric wire connecting device of the present invention can be connected easily and securely without needing to remove the coating in advance when connecting the power supply electric wire, without using any jig or tool.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention,
(A) is a perspective view which shows the use condition of an electric wire connection device, (b)
[FIG. 3] is a perspective view showing a power supply wire with a coating removed.

FIG. 2 shows a second embodiment of the present invention,
(A) is a perspective view which shows the use condition of an electric wire connection device, (b)
[FIG. 3] is a perspective view showing a power supply wire with a coating removed.

FIG. 3 is a perspective view of an essential part of a third wire connecting device of the present invention in a used state.

FIG. 4 is a perspective view of an essential part of a fourth wire connection device of the present invention.

FIG. 5 is a perspective view of a conventional electric wire connection device for the present invention in an electric wire connection state.

FIG. 6 is a cross-sectional side view of another conventional wire connecting device for the present invention in use.

[Explanation of symbols]

 21 Wire Connecting Device 22 Conductive Metal Fitting 23 Body 24 Cutting Blade 25 Electric Wire Connecting Guide 26 Power Supply Wire 27 Protective Coating 28 Insulating Coating 29 Core Wire 30 Recess 34 Electric Wire Inserting Hole 35 Coating Stripping Blade 36 Electric Wire Connecting Device 42 Conductive Metal Fitting 43 Body 44 Coating stripping tool 45 Electric wire connection guide 46 Power supply wire 47 Protective coating 48 Insulation coating 49 Core wire 50 Recess 54 Electrical wire insertion hole 55 Coating stripping blade

Claims (1)

[Claims] 1. A conductive member having a cutting blade for stripping a protective coating and an insulating coating of a power source electric wire inserted into an electric wire insertion hole, the protective coating and the insulating coating being stripped by the cutting blade to contact an exposed core wire of the power source electric wire. An electric wire connecting device characterized by having a metal fitting.