JP2001298824A - Electric wire for branch circuit with terminal and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electric wires for branch circuits with a terminal of high workability and reliability which make it possible to connect more circuits to a common ground, etc., by connecting and leading out more electric wires by crimping than the case of a conventional crimp-style terminal. SOLUTION: A bundle of electric wires 10 having conductive portions 10a whose cores (e) are exposed so as to be able to be in continuity by forming cuts in the intermediate parts of the electric wires E and moving their insulating coats aside, a crimping portion 21 for crimping the conductive portions 10a of this bundle 10 to make them in continuity, and a crimp-style terminal 20 which has a crimping portion 22 for crimping and supporting the armor coats of the bundle 10 and a terminal portion 23 for performing connection by inserting an external bolt B, etc., into a round hole 23a, are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire for a branch circuit with terminals and a method of manufacturing the same, for example, to an electric wire capable of connecting a plurality of circuits to a common ground.

[0002]

2. Description of the Related Art Conventionally, electric wires forming a branch circuit having the same potential have been manufactured and used. For example, as shown in FIG. 8, common electric loads are used for loads such as lamps, switches, motors, and electric circuit units. As in the case of grounding, an electric wire forming a branch circuit connected to each load from a grounded earth is manufactured, and the electric wire is used by connecting an element to be grounded.

[0003] As such a branch circuit wire, for example, as shown in FIG.
A female terminal F is connected to each end of each of the terminals 1 to E4, and a female terminal F is similarly connected to an end of the electric wire EA to be grounded. There is a type in which the electric wires E1 to E4 and the electric wire EA are electrically connected to each other and connected to the ground by connecting them in common to a bus bar B (hereinafter, referred to as a first conventional example).

Further, for example, as shown in FIG.
There is a type in which the wires E1 to E4 connected to the respective loads and the ends of the wires EA that are grounded are welded so that the wires E1 to E4 are electrically connected to the wires EA and the respective loads are connected to the ground (hereinafter, referred to as a second prior art). Example).

[0005] For example, as shown in FIG.
The ends of the electric wires E1 to E4 connected to each load are connected to one crimp terminal (so-called round end is shown in the figure) T, and this crimp terminal T is screwed to a bolt (not shown) grounded. In some cases, the respective loads of the electric wires E1 to E4 are grounded by being stopped (hereinafter, referred to as a third conventional example).

[0006]

However, in such a first conventional example, a connector C and a bus bar B are provided together with a female terminal F connected to each of the electric wires E1 to EA.
Is required, the parts cost increases, and the work is troublesome.

In the second conventional example, the electric wires E1 to E1
Welding must be performed in a state where the ends of the EA are bundled, and the operation is complicated, and there is a problem that the operation of welding in a conductive state with high reliability requires skill.

Further, in the third conventional example, since it is only necessary to crimp the ends of the wires E1 to E4 to be grounded to the crimp terminal T, this is a simple operation. However, as shown in FIG.
By caulking, there is a limit to the number of electric wires E that can be accommodated in the crimping portion t1 that is electrically crimped and connected to the core wire e of the electric wire E and the crimping portion t2 that crimps and supports the exterior (insulating coating). There was a problem that too many wires E could not be grounded.

To solve this problem, it is conceivable to connect the electric wires E to each of the plurality of crimp terminals T1 and T2, as shown in FIG. Since the number of crimp terminals T that can be screwed to a grounded bolt is also limited, there is a demand to connect as many wires E as possible to one crimp terminal T.

In order to meet this demand, as shown in FIG. 12, while the core wire e of the electric wire E is electrically connected by welding, the armor of the electric wire E is not crimped and supported, but the supporting piece is t3. There is a crimp terminal T 'which is bent by pliers or the like so as to be loosely accommodated and supported, but this crimp terminal T' has a problem that a welding operation is required in any case.

Accordingly, the present invention provides a workability in which a larger number of circuits can be connected to a common ground or the like by allowing more electric wires to be connected by crimping than conventional crimp terminals. It is another object of the present invention to provide a branch circuit wire with terminals having high reliability.

[0012]

Means for Solving the Problems A first method for solving the above problems is described below.
The invention of the present invention relates to one or two or more electric wires formed with a conductive portion exposing a core wire so that the core wire can be conductively exposed except for an insulating coating at an intermediate portion, a crimping portion which is conductively crimped to the conductive portion of the electric wire, and an external And a crimp terminal having a terminal portion formed so as to be connectable to the connected means.

According to the present invention, the crimping portion of the crimping terminal is crimp-connected to the conductive portion where the core wire is exposed at the middle portion of the electric wire. Therefore, two electric wires can be drawn out from both sides of the crimping portion of the crimping terminal, and the terminal portion conducting to these electric wires can be connected to an external connecting means such as a grounded bolt.

According to a second aspect of the invention for solving the above-mentioned problems, in addition to the configuration of the first aspect, the terminal portion is separated from the crimping portion so as not to be hidden by an electric wire folded from a position crimped by the crimping portion. It is characterized in that it is formed at a position.

According to the present invention, the electric wire crimped to the crimping portion of the crimping terminal can be bundled by folding back the terminal portion side. At this time, the terminal portion is separated from the crimping portion, and the folded wire is There is no hiding. Therefore, the connection of the crimp terminal to the terminal portion is not hindered by the folded wire.

According to a third aspect of the present invention, in addition to the configuration of the first aspect, the terminal portion is formed in a direction intersecting an extending direction of an electric wire crimped to the crimping portion. It is characterized by the following.

According to the present invention, the terminal portion of the crimp terminal is located in a direction crossing, for example, a direction orthogonal to the electric wire directly drawn out from both sides of the crimp portion, and is hidden by the electric wire to be crimped. Absent. Therefore, it is possible to eliminate the necessity of folding the crimp-connected wire, and the connection of the crimp terminal to the terminal portion is not hindered by the wire.

According to a fourth aspect of the present invention, there is provided a method for manufacturing a terminal-equipped branch circuit electric wire according to any one of the first to third aspects, wherein an insulated wire and a crimp terminal are provided. After forming the conductive portion by exposing the core wire except for the covering of the intermediate portion of the electric wire, the conductive portion is positioned in the expanding crimping portion of the crimp terminal and the crimping portion is crimped.

According to the present invention, by removing the insulating coating on the middle portion of the electric wire, for example, a cut is made at both sides of the position where the conducting portion is formed to cut off the wire, and the core wire is exposed, or a cut is made at one place (compression). After exposing the core wire, the crimping portion of the crimping terminal is crimped on the conductive portion and the crimped portion is simply subjected to conductive crimping, whereby a branch circuit wire with terminals can be manufactured. Therefore, it can be manufactured by a conventional operation using a crimp terminal and an electric wire of a general-purpose product, and a device in which the shape between the crimp portion and the terminal portion is devised can also be manufactured.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 to FIG. 6 are views showing a first embodiment of a branch circuit-equipped wire according to the present invention and a method for manufacturing the same. In the present embodiment, the same components as those of the above-described related art will be described with the same reference numerals.

First, the configuration of a branch circuit wire with terminals will be described.

In FIG. 1, an electric wire for a branch circuit with terminals includes an electric wire bundle 10 in which three electric wires E are bundled,
And a crimp terminal 20 that is crimp-connected to the wire E. The wire bundle 10 is formed with a conductive portion 10a exposing the core wire e except for an insulating coating at an intermediate portion of each wire E. Then, the crimp terminal 20 is crimped by a crimping portion 2 that is crimped and electrically connected to the core wire e of the three electric wires E.
1 and a crimping portion 22 for crimping and supporting the exterior (insulating coating) of the three electric wires E by crimping adjacently to the crimping portion 21, and adjacent to the crimping portion 21 on the opposite side of the crimping portion 22. And a terminal portion 23 for externally inserting a bolt B or the like shown in FIG. 5 into the round hole 23a and screwing the same.
It is configured as a round terminal. In this embodiment, a case where the present invention is applied to a round terminal will be described. However, the present invention is not limited to this. For example, the present invention may be applied to a so-called Y terminal in which a terminal portion is formed in a Y-shape. Needless to say (the same applies to embodiments described later).

The wire bundle 10 is made up of the electric wires 11 to 1 on the terminal portion 23 side pulled out from the crimp portion 21 of the crimp terminal 20.
3, the tape 31 is wound along the wires 14 to 16 drawn from the crimping portion 22 on the opposite side of the crimping portion 21, and the wires 11 to 16 are bundled together as shown in FIG. The electric wires 11 to 16 are not limited to tape winding. For example, as shown in FIG.
16 and a band portion 32 wound around
The lock portion 33 for locking the return movement of the buckle may be bound by a tying band 34 integrally formed, and as shown in FIG. 3B, the lock portion 33 is inserted and fixed to a mounting hole (not shown) in the lock portion 33. It goes without saying that the clip 35 to be formed and the elastic bowl 36 for holding the plate member having the mounting hole opened may be bound by a band clip integrally formed.

As shown in FIG. 4, the crimp terminal 20 has a length L1 between the crimp portion 21 and the terminal portion 23 from the end of the conducting portion 10a of the wire bundle 10 to the folded outer edge. Has been extended.

Therefore, the terminal portion 23 of the crimp terminal 20
Does not separate from the crimping portion 21 and is not concealed by the folded portion of the wire bundle 10, and does not hinder insertion of a bolt into the round hole 23 a of the terminal portion 23. In addition,
When the terminal portion 23 is not hidden by the folded portion of the wire bundle 10 because the wire diameter of the wire E used is small, FIG.
As shown in the figure, the end of the electric wire E from which the insulating coating is cut off and the core wire e is exposed is crimped and connected and supported by the crimping portions 21 and 22. The short interval L2 between the crimping portion 21 and the terminal portion 23
It goes without saying that the general-purpose crimp terminal 20 set to (L2 <L1) may be used.

For this reason, only by crimping and connecting the three wires E to the crimp terminal 20, the six electrically connected wires 11 to 16 can be pulled out from the crimp terminal 20. For example, FIG. As shown in the figure, it is possible to configure a terminal-equipped branch circuit capable of screwing the terminal portion 23 to a grounding bolt B and connecting the electric wires 11 to 16 to a load such as an external light to obtain a common ground. it can.

Next, the manufacture of the branch circuit wire with terminals will be described.

First, an electric wire E covered with three insulating coatings and one crimp terminal 20 are prepared, and the length from the ground B to each load such as an electric lamp shown in FIG. A notch is used to make a cut at one intermediate portion of the insulating coating of the electric wire E, and the insulating coating is moved (compressed) so as to expand the cut as shown in FIG. Then, a conductive portion 10a where the core wire e is exposed is formed at the intermediate portion (a cut may be made on both sides of a position where the conductive portion 10a is formed, and the insulating coating may be cut off).

Next, the electric wire E is put into the electric wire bundle 10, and the individually formed conductive portions 10a of the electric wire E are accommodated in the crimping portion 21 of the crimping terminal 20 which is in an expanded state before use. An exterior portion on one side of the electric wire E adjacent to the conducting portion 10a is housed in the crimping portion 22, and the expanding crimping portions 21 and 22 are caulked using a general crimping tool, so that the electric wire bundle is formed. The crimping part 21 is conductively crimped to the core wire e of the cable 10, and the exterior of the wire bundle 10 is crimped and supported by the crimping part 22.

Therefore, similar to the crimping work of general-purpose products,
The wires 11 to 1 can be crimp-connected to the conductive portion 10a formed in the middle part of the wire bundle 10 and have the crimp terminals 20 attached to the bolts B to be grounded.
6, the electric wire forming the branch circuit to each load can be manufactured.

Thereafter, as shown in FIG.
Crimp terminal 20
Is folded back, and the wires 11 to 13 can be bundled by tape winding or the like along the wires 14 to 16 on the opposite side.

As described above, in the present embodiment, the electric wire E
Conductive portion 10a of the electric wire bundle 10 exposing the intermediate core wire e
By simply crimping the crimping portion 21 of the crimping terminal 20 onto the crimping terminal 20, two wires E can be pulled out from the crimping terminal 20, and three wires E can be connected to the grounded bolt B. Six wires 11 to 16 which are crimped on the wire bundle 10 made of the wire E of the above and connected to each load such as a light.
Can be pulled out.

The electric wire bundle 10 to be crimped to the crimping portion 21 of the crimping terminal 20 can be bundled with the terminal portion 23 of the crimping terminal 20 folded without hiding the terminal portion 23, so that the electric wires 11 to 16 can be easily bundled. It can be pulled and connected to the bolt B.

Therefore, a branch circuit electric wire with a terminal, which is connected to the grounded bolt B and forms a circuit for branching to each load, can be manufactured with high reliability without deteriorating the workability by the same manufacturing method as before. can do.

Next, FIG. 7 is a view showing a second embodiment of a branch circuit wire with terminals and a method of manufacturing the same according to the present invention. In the present embodiment, the same components as those in the above-described embodiment will be described by assigning the same reference numerals.

In FIG. 7, the electric wire for a branch circuit with terminals is composed of an electric wire bundle 10 and a crimp terminal 40 to be crimped to the electric wire bundle 10.
The round hole 23a is bent in a direction (crossing direction) which is bent and skewed with respect to the direction (extending direction of the electric wire E) adjacent to the crimping portions 21, 22.
Is formed.

For this reason, similarly to the above-described embodiment, three wires E and one crimp terminal 40 are prepared, and the wire bundle 1 is prepared.
The crimping portion 21 can be conductively crimped to the conductive portion 10a of the crimping terminal 10a, and the exterior of the wire bundle 10 can be crimped and supported by the crimping portion 22. In this state, the terminal portion 43 of the crimping terminal 40 is provided.
Is not hidden by the electric wires 11 to 13 pulled out from the crimping portion 21.

Therefore, the operation of folding the electric wires 11 to 13 can be omitted. It goes without saying that the wires 11 to 13 may be wound and tied separately and bundled with the wires 14 to 16, and the wires 11 to 13 may be folded back similarly to the above embodiment.

As described above, in this embodiment, in addition to the functions and effects of the above-described embodiment, it is possible to eliminate the restriction on the direction in which the wires 11 to 16 are routed, and to simplify the manufacturing process.

In this embodiment, the terminal portion 43 of the crimp terminal 40 is formed in a direction oblique to the extending direction of the electric wire E, but is formed in a direction perpendicular to the extending direction of the electric wire E. It goes without saying that this may be done.

[0041]

According to the present invention, by exposing an intermediate core wire of an electric wire and crimping a crimp terminal, two electric wires can be formally drawn out per one electric wire. Can be pulled out from the crimp terminal and connected to one connecting means.

The crimp terminal may be a general-purpose product or a terminal whose terminal portion is positioned in the extension direction or the cross direction, depending on the type of wire used, such as the wire diameter, or the wiring route of the circuit. In addition, by a manufacturing method similar to the conventional method, a highly reliable manufacturing can be performed without lowering workability.

Therefore, workability and reliability are high,
For example, it is possible to provide a terminal-equipped branch circuit electric wire that allows more circuits to be connected to a common ground than ever before.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a branch circuit-equipped electric wire with a terminal and a method for manufacturing the same according to the present invention, and is a perspective view showing a main part thereof.

FIG. 2 is a plan view showing a state of the wire bundle.

FIG. 3 is a plan view showing another embodiment.

FIG. 4 is an exploded perspective view for explaining the configuration and production.

FIG. 5 is a plan view showing another embodiment.

FIG. 6 is a conceptual diagram illustrating its use.

FIG. 7 is a view showing a second embodiment of a branch circuit-equipped electric wire with terminal and a method for manufacturing the same according to the present invention, and is a perspective view showing a main part thereof.

FIG. 8 is a conceptual diagram illustrating the use of the conventional technique.

FIG. 9 is a plan view showing various conventional techniques.

FIG. 10 is a perspective view illustrating the problem.

FIG. 11 is a perspective view illustrating the use of the conventional technique.

FIG. 12 is a perspective view illustrating a device of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Electric wire bundle 10a Conduction part 11-16 Electric wire 20, 40 Crimp terminal 21 Crimp part 23, 43 Terminal part e Core wire

Claims (4)

[Claims] An electric wire having at least one conductive portion exposing a conductive wire except for an insulating coating at an intermediate portion, and a crimping portion for pressurizing the conductive wire to the conductive portion of the electric wire. And a crimp terminal having a terminal portion formed so as to be connectable to an external connected means. 2. The branch circuit with a terminal according to claim 1, wherein the terminal portion is formed at a position separated from the crimping portion so as not to be hidden by an electric wire folded from a position crimped by the crimping portion. For electric wires. 3. The electric wire for a branch circuit with terminals according to claim 1, wherein said terminal portion is formed in a direction crossing an extending direction of the electric wire crimped to the crimping portion. 4. A method for producing a terminal-equipped branch circuit electric wire according to claim 1, wherein an insulated wire and a crimp terminal are prepared, and the middle portion of the wire is removed. Forming a conductive portion by exposing the core wire to form a conductive portion, and then crimping the crimped portion by positioning the conductive portion in the crimped portion of the crimping terminal that expands.