JP2016207325A - Inter-wire connection structure and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inter-wire connection structure capable of obtaining a joining area required for electrical connection and securing fastening force equal to or more than a specified value by addition of a simple process.SOLUTION: An inter-wire connection structure 1 in which a plurality of electric wires W are electrically connected to each other, includes: a joining part 10 obtained by connecting core wires 2 of the plurality of electric wires W to each other; and a coupling part 20 obtained by coupling the plurality of electric wires W to each other in addition to the joining part 10. The total of fastening force by joining of the joining part 10 and fastening force of the coupling part 20 is equal to or more than a specified value obtained in the connection structure.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an inter-wire connection structure for electrically connecting a plurality of electric wires and a manufacturing method thereof.

  As this type of conventional wire-to-wire connection structure, the one disclosed in Patent Document 1 has been proposed. In this inter-wire connection structure 50, as shown in FIG. 7, a first electric wire W1 having a copper core wire (hereinafter, copper core wire) 51 and a second electric wire W2 having an aluminum core wire (hereinafter, aluminum core wire) 52 are provided. Is connected. At the end of the copper core wire 51 of the first electric wire W1, a caulking portion 51a in which a plurality of copper wires are formed into an arc plate shape by press working or the like is formed. The joining portion 60 is formed by caulking the aluminum core wire 52 of the second electric wire W2 with the caulking portion 51a.

  In this way, a large adhering force can be obtained by making the joint 60 a caulking structure. In particular, when the copper core wire 51 and the aluminum core wire 52 are welded to each other, the aluminum core wire 52 is weak in strength, so that a fixing force that can be obtained only with a very large bonding area can be secured.

JP2013-242991A

  However, in the conventional wire-to-wire connection structure 50, a process of forming the crimped portion 51a on the copper core wire 51 is necessary, and this process is a process of integrating a plurality of copper wire materials. Therefore, there is a problem that it becomes very large including the processing apparatus and is not suitable for mass production.

  Accordingly, the present invention has been made to solve the above-described problems, and obtains a bonding area necessary for electrical connection, and an inter-wire connection structure that can secure a fixing force of a specified value or more by adding a simple process and It aims at providing the manufacturing method.

  The present invention is an inter-wire connection structure for electrically connecting a plurality of electric wires, and a plurality of the electric wires are connected to each other separately from a joint portion in which the core wires of the plurality of electric wires are joined to each other. The wire-to-wire connection structure is characterized in that a total of a fixing force due to joining of the joint portion and a fixing force of the joint portion is not less than a specified value required for the connection structure.

  Another invention is a manufacturing method of an inter-wire connection structure for electrically connecting a plurality of electric wires, the joining step of joining the core wires of a plurality of the electric wires to form a joint portion, and the joining step And a bonding step of bonding a plurality of the electric wires, and forming a bonding portion having a fixing force in which a total fixing force including a fixing force by bonding of the bonding portions is equal to or greater than a specified value required for the connection structure. It is a manufacturing method of the connection structure between electric wires characterized by the above-mentioned.

  According to the present invention, the joining portion can be formed by a joining process between core wires so as to obtain a joining area necessary for electrical connection, and the fixing portion is simple, for example, fastening a plurality of electric wires with a binding band. It can be formed by a simple process. Therefore, it is possible to obtain a bonding area necessary for electrical connection and to secure a fixing force exceeding a specified value by adding a simple process.

BRIEF DESCRIPTION OF THE DRAWINGS 1st Embodiment of this invention is shown, (a) is a partially broken front view of the connection structure between electric wires, (b) is a front view which shows the state which formed the junction part. It is a front view of the connection structure between electric wires which shows the modification of 1st Embodiment of this invention. The 2nd Embodiment of this invention is shown and it is a partially broken front view of the connection structure between electric wires. The 3rd Embodiment of this invention is shown and it is a front view of the connection structure between electric wires. The 4th Embodiment of this invention is shown and it is a partially broken front view of the connection structure between electric wires. The 5th Embodiment of this invention is shown and it is a partially broken front view of the connection structure between electric wires. It is a perspective view of the connection structure between electric wires which shows a conventional example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 shows a first embodiment of the present invention. As shown to Fig.1 (a), in the connection structure 1 between electric wires, the some electric wire W which has the insulation coating part 3 which coat | covers the core wire 2 and the core wire 2, respectively is connected. The plurality of electric wires W include one in which the core wire 2 is a dissimilar metal. For example, the core wire 2 is an electric wire made of a copper material, and the core wire 2 is an electric wire made of an aluminum material. In the drawing, they are not shown separately.

  As for each electric wire W, the insulation coating | coated part 3 of a terminal location is stripped off, and the core wire 2 of a terminal location is exposed outside. The core wires 2 of the plurality of electric wires W are joined together by the joint portion 10. The joint 10 is formed by ultrasonic welding, friction stir welding, or the like. The joint portion 10 has a joint area where the electric resistance is equal to or less than a specified value.

  The plurality of electric wires W are gathered at the terminal locations. Terminal caps 11 are put on the terminal portions of the assembled plurality of electric wires W. The terminal cap 11 completely covers the joint portion 10. The terminal cap 11 has a tongue extending portion 11a extending from the opening.

  The terminal portions of the assembled plurality of electric wires W are bundled together with the tongue extending portion 11 a of the terminal cap 11 with a binding band 21. The binding band 21 forms a coupling portion 20. The joint portion 20 has a sticking force such that the total sticking force including the sticking force due to joining of the joint portion 10 is equal to or greater than a specified value required for the connection structure.

  Next, a manufacturing procedure of the inter-wire connection structure 1 will be described. In the plurality of electric wires W, the insulating coating 3 at the terminal portion is peeled off, and the core wire 2 at the terminal portion is exposed to the outside.

  As shown in FIG.1 (b), the joining process which joins the core wires 2 of the some electric wire W, and forms the junction part 10 first is performed. The joining process includes ultrasonic welding, friction stir welding, and the like. In the bonding step, heat energy is applied so that the bonding portion 10 having a bonding area where the electric resistance is equal to or less than a specified value is obtained.

  Next, the terminal cap 11 is attached so as to cover the joint portion 10, and a joining step of binding a plurality of electric wires W with the binding band 21 is performed. As the binding band 21, a binding band 21 that exhibits a fixing force in which the total fixing force including the fixing force due to the bonding of the bonding portion 10 is equal to or greater than a specified value required for the connection structure is used. In other words, the entire fixing force is greater than or equal to a specified value required for the connection structure.

  As described above, the inter-wire connection structure 1 includes the joint portion 10 and the joint portion 20. And the junction part 10 can be formed in the joining process of the core wires 2 which obtains a junction area required for electrical connection, and the coupling | bond part 20 fastens between the some electric wires W with the binding band 21 as mentioned above. It can be formed by such a simple process. Therefore, it is possible to obtain a bonding area necessary for electrical connection and to secure a fixing force exceeding a specified value by adding a simple process that does not involve the form processing of the core wire 2. A simple process that does not involve form processing of the core wire 2 is simple including the apparatus, and is suitable for mass production.

  In particular, when the joint portion 10 has a welded structure of the core wire 2 in which a copper material and an aluminum material are mixed, the core wire 52 of the aluminum material is weak in strength, and an adhering force equal to or greater than a specified value can be obtained only by the joint area of the joint portion 10. In order to ensure, it can be obtained only with a very large bonding area. Therefore, this invention is effective for the electric wire connection structure 1 containing the electric wire W of the core wire 2 of an aluminum material.

  A joining step of joining the core wires 2 of the plurality of electric wires W to form the joint portion 10 is performed, and then the terminal cap 11 is attached so as to cover the joint portion 10, and the plurality of electric wires W are bound by the binding band 21. A coupling step is performed. Therefore, when performing a joining process, since the some electric wire W is not bundled, the core wire 2 of the some electric wire W can be easily converged, and the energy efficient welding is possible. That is, in the state where the plurality of electric wires W are bundled, the core wire 2 at the tip end portion is easily separated, and if the joining operation is performed after the electric wires W are bundled, there is a possibility that energy transmission at the time of welding is not efficient.

  Since terminal portions of the plurality of electric wires W are covered with the terminal cap 11, it is possible to prevent water from adhering to the joint portion 10. Thereby, the electrolytic corrosion of a dissimilar metal connection part can be prevented, and corrosion resistance can be improved.

  FIG. 2 shows a modification of the first embodiment. Compared with the first embodiment, this modification is different in that it is bound by a binding band 21 without attaching the terminal cap 11 to the terminal locations of the plurality of electric wires W.

  Other configurations are the same as those in the first embodiment.

(Second Embodiment)
FIG. 3 shows a second embodiment of the present invention. The second embodiment is different from the first embodiment in that the coupling portion 20 is formed by the contraction tube 22. The contraction tube 22 may be any one that contracts by heat, light, or the like. The contraction tube 22 has the same fixing force as the binding band 21 of the first embodiment.

  Since other configurations are the same as those of the first embodiment, the same components in the drawings are denoted by the same reference numerals, and description thereof is omitted.

  In the second embodiment, as in the first embodiment, a bonding area necessary for electrical connection is obtained, and a fixing force equal to or higher than a specified value can be secured by adding a simple process that does not involve form processing of the core wire 2.

  Also in the second embodiment, a joining step of joining the core wires 2 of the plurality of electric wires W to form the joint portion 10 is performed, and thereafter, the shrink tube 22 is attached so as to cover the joint portion 10. Then, a joining step of binding a plurality of electric wires W is performed. Therefore, when performing a joining process, since the some electric wire W is not bundled, the core wire 2 of the some electric wire W can be easily converged, and the energy efficient welding is possible.

  The shrinkable tube 22 exhibits waterproofness higher than that of the terminal cap 11 of the first embodiment and high corrosion resistance associated therewith.

(Third embodiment)
FIG. 4 shows a third embodiment of the present invention. The third embodiment is different from the first embodiment in that the connecting portion 20 is formed by the crimping member 23. The crimping member 23 is attached to the outer periphery of the joint 10 and compresses the joint 10 from the outer periphery. The binding tape 24 is wound around the outer periphery of the insulating coating portion 3 at the terminal locations of the assembled plurality of electric wires W. The crimping member 23 has a fixing force similar to that of the binding band 21 of the first embodiment.

  Since other configurations are the same as those of the first embodiment, the same components in the drawings are denoted by the same reference numerals, and description thereof is omitted.

  In the third embodiment, as in the first embodiment, a bonding area necessary for electrical connection is obtained, and a fixing force equal to or higher than a specified value can be secured by adding a simple process that does not involve form processing of the core wire 2.

  Also in the third embodiment, a joining step is performed in which the core wires 2 of the plurality of electric wires W are joined to form the joined portion 10, and thereafter, the crimping member 23 is crimped to the outer periphery of the joined portion 10, and the binding tape is used. In 24, a joining step of binding a plurality of electric wires W is performed. Therefore, when performing a joining process, since the some electric wire W is not bundled, the core wire 2 of the some electric wire W can be easily converged, and the energy efficient welding is possible.

  In the third embodiment, the binding tape 24 also supplements the fixing force of the crimping member 23. That is, in detail, the connecting portion 20 is composed of the crimping member 23 and the binding tape 24.

(Fourth embodiment)
FIG. 5 shows a fourth embodiment of the present invention. The fourth embodiment is different from the first embodiment in that the bonding part 20 is formed by the adhesive application part 25.

  That is, the terminal cap 11 is put on the terminal portions of the assembled plurality of electric wires W. The terminal cap 11 is filled with an adhesive, thereby forming the joint portion 20 of the adhesive application portion 25.

  The terminal portions of the assembled plurality of electric wires W are bundled together with the tongue extending portion 11 a of the terminal cap 11 by the binding tape 24.

  The adhesive application part 25 has the same fixing force as the binding band 21 of the first embodiment.

  Since other configurations are the same as those of the first embodiment, the same components in the drawings are denoted by the same reference numerals, and description thereof is omitted.

  In the fourth embodiment, as in the first embodiment, it is possible to obtain a bonding area necessary for electrical connection and to secure a fixing force equal to or greater than a specified value by adding a simple process that does not involve form processing of the core wire 2.

  Also in this 4th Embodiment, the joining process which joins the core wires 2 of the some electric wire W, and forms the junction part 10 is performed, Then, the terminal cap 11 is put on the outer periphery of the junction part 10, and it is adhesive agent in it. And a binding step of binding the plurality of electric wires W with the binding tape 24 is performed. Therefore, when performing a joining process, since the some electric wire W is not bundled, the core wire 2 of the some electric wire W can be easily converged, and the energy efficient welding is possible.

  Since the terminal portions of the plurality of electric wires W are covered with the terminal cap 11 and are completely covered with the adhesive application part 25, it is possible to completely prevent water from adhering to the joint part 10. Thereby, especially corrosion resistance is improved.

  In the fourth embodiment, the binding tape 24 also complements the adhesive force of the adhesive application part 25. That is, in detail, the connecting portion 20 includes an adhesive application portion 25 and a binding tape 24.

(Fifth embodiment)
FIG. 6 shows a fifth embodiment of the present invention. The fifth embodiment is different from the first embodiment in that the connecting portion 20 is formed by the resin mold forming portion 26.

  The terminal portions of the assembled plurality of electric wires W are covered with the resin molding part 26 including the joint part 10.

  The resin mold molding part 26 has a fixing force of the same size as the binding band 21 of the first embodiment.

  Since other configurations are the same as those of the first embodiment, the same components in the drawings are denoted by the same reference numerals, and description thereof is omitted.

  In the fifth embodiment, as in the first embodiment, a bonding area necessary for electrical connection can be obtained, and a fixing force equal to or greater than a specified value can be secured by adding a simple process that does not involve form processing of the core wire 2.

  Also in the fifth embodiment, a joining step of joining the core wires 2 of the plurality of electric wires W to form the joint portion 10 is performed, and thereafter, the resin mold forming portion 26 is formed on the outer periphery of the joint portion 10, A joining step for binding the electric wires W is performed. Therefore, when performing a joining process, since the some electric wire W is not bundled, the core wire 2 of the some electric wire W can be easily converged, and the energy efficient welding is possible.

  Since the terminal locations of the plurality of electric wires W are completely covered with the resin mold part 26, it is possible to completely prevent water from adhering to the joint part 10. Thereby, especially corrosion resistance is improved.

  In each said embodiment, although the coupling | bond part 20 is each formed by the binding band 21, the shrinkable tube 22, the crimping | compression-bonding member 23, the adhesive agent application part 25, and the resin mold shaping | molding part 26, even if formed by these two or more. good. Moreover, you may form by structures other than these.

DESCRIPTION OF SYMBOLS 1 Connection structure between electric wires 2 Core wire 10 Joining part 20 Joining part 21 Binding band (joining part)
22 Shrink tube (joint)
23 Crimp member (joint)
24 Binding tape (joint)
25 Adhesive application part (bonding part)
26 Resin mold molding part (joint part)

Claims (6)

An inter-wire connection structure for electrically connecting a plurality of electric wires,
In addition to the joint portion where the core wires of the plurality of electric wires are joined, and a joint portion where the plurality of the electric wires are joined, separately from the joint portion,
The wire-to-wire connection structure, wherein a total of a fixing force due to joining of the joint portions and a fixing force of the joint portion is equal to or greater than a specified value required for the connection structure. The inter-wire connection structure according to claim 1,
The connection part between electric wires characterized by the above-mentioned junction part having a junction area where electric resistance becomes below a regulation value. The inter-wire connection structure according to claim 1 or claim 2,
The inter-wire connection structure, wherein the core wires of the plurality of electric wires include those of different metals. A method for manufacturing an inter-wire connection structure for electrically connecting a plurality of electric wires,
A joining step of joining the core wires of the plurality of electric wires to form a joint portion;
Bonding that is performed after the bonding step to bond a plurality of the electric wires to form a bonding portion having a fixing force in which a total fixing force including a fixing force by bonding of the bonding portions is equal to or greater than a specified value required for the connection structure. A method for manufacturing an inter-wire connection structure, comprising: a step. It is a manufacturing method of the connection structure between electric wires according to claim 4,
In the joining step, energy for obtaining a joining area where the electrical resistance of the joining portion is a specified value or less is applied. It is a manufacturing method of the connection structure between electric wires according to claim 4 or 5,
The method of manufacturing an inter-wire connection structure, wherein the core wires of the plurality of electric wires include those of different metals.

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