JP2010055804A - Wire harness containing short circuit and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire harness capable of aiming at narrowing and weight saving with the use of non-copper group wires, and a method of manufacturing a wire harness in a simple process. <P>SOLUTION: The wire harness is provided with a plurality of circuit-component members 50A, 50B, 50C forming short circuits. The circuit-component member 50A, for instance, out of them, includes a plurality of wires 52A, 53A, 54A, a plurality of outer-connection connectors 56A, 57A, 58A each connected to one of the terminals of each wire above, and a joint connector JCA connected to the other terminal to short-circuit the wires themselves, copper-series wires and non-copper-series wires intermingled with the wires 52A, 53A, 54A, all of them short-circuited by a common joint connector JCA. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wire harness that is provided in a vehicle such as an automobile and includes a plurality of electric wires and includes a short circuit that short-circuits the specific electric wires, and a method for manufacturing the wire harness.

Conventionally, as a wire harness including a short circuit as described above, for example, one described in Patent Document 1 is known. This wire harness includes a trunk line in which a plurality of electric wires are bundled, and a joint connector that is attached to a terminal of a branched electric wire branched from the trunk line. This joint connector is short-circuited between the ends of the branch wires by being connected to the ends of the branch wires.
JP 2003-297451 A

  In the wire harness as described above, thinning and weight reduction are important issues. As a means of thinning and lightening, a part of the wire constituting copper is replaced with copper or copper alloy instead of copper-based electric wire (electric wire whose conductor is formed of copper or copper alloy) which has been widely used conventionally. It is considered to use a composite electric wire that can be made thin by making it from stainless steel with higher strength, or an aluminum-based electric wire whose conductor is made of aluminum or aluminum alloy whose specific gravity is smaller than copper or copper alloy It is done.

  However, non-copper type electric wires such as the composite electric wires and the aluminum type electric wires are severely restricted in their use, so that they are hardly applied particularly to wire harnesses for vehicles. Specifically, the composite electric wire has a resistance higher than that of a copper-based electric wire, so that it is difficult to use it in a portion where the required voltage is high, and an aluminum-based electric wire easily rusts aluminum or aluminum alloy constituting the conductor, Due to its low strength, there is a circumstance that it is very difficult to wire to locations exposed to rain water or the like or forcedly bent.

  The present invention provides a wire harness that can be thinned or lightened by using such a non-copper-type electric wire with significant restrictions, and the wire harness can be manufactured by a simple process. It aims to provide a method.

  As means for solving the above-mentioned problems, the present invention is a wire harness including a plurality of short-circuits, and a plurality of circuit-constituting members that respectively constitute the short-circuits and these circuit-constituting members are bundled together. A bundling tape for fixing the circuit components in a state, and at least one of the circuit components is a plurality of electric wires and a plurality of externals connected to one end of these electric wires. Including a connector for connection, a wire-side terminal mounted on the other end of each of these wires, and a short-circuiting conductor that can be fitted to each of these wire-side terminals, and the short-circuiting conductor and each of the wire-side terminals A joint connector that short-circuits the other end of each of the electric wires by fitting, and the conductor constituting the electric wire as the electric wire is a copper-based electric wire made of copper or a copper alloy; Non-copper-type electric wires having conductors other than the above and having at least one of the weight and diameter per unit length smaller than the copper-type electric wires are mixed, and these electric wires are connected by the common joint connector. They are shorted together.

  In this wire harness, for at least one circuit component member, a copper wire and a non-copper wire having a smaller diameter or lighter weight are mixed in the wire contained therein, thereby avoiding restrictions imposed on the non-copper wire. However, this can be used to achieve thinning or weight reduction of the wire harness.

  Specifically, in the case of using a small-diameter composite wire including a strand formed of copper or a copper alloy and a strand formed of stainless steel as the non-copper-based wire, for example, the composite By wiring the wire only to the part where the required voltage is low (that is, the part where the low resistance is not required for the composite wire), and wiring the other part where the required voltage is high, the low resistance copper-based wire is used. It is possible to use a composite electric wire while avoiding the restrictions, and to reduce the thickness of the wire harness by the use.

  Further, when using a light-weight (small weight per unit length) aluminum-based wire whose conductor is formed of aluminum or an aluminum alloy as the non-copper-based wire, for example, the aluminum-based wire is relatively Aluminum wiring can be used while avoiding rust prevention and strength restrictions by wiring only to parts that are not easily affected, or to parts that require little bending, and wiring to other parts. Thus, the weight of the wire harness can be reduced by the use.

  Moreover, even if the materials of the electric wires included in the circuit constituent members are different from each other, by attaching the electric wire side terminals to the terminals and fitting these electric wire side terminals to the short-circuit conductor of the common joint connector, The electric wires can be short-circuited without any inconvenience.

  The joint connector is made of a single metal plate and includes a plurality of fitting portions that are fitted with electric wire side terminals provided at the ends of the branch electric wires, and the electric wires are short-circuited in the fitted state. What has the metal plate for a short circuit and the insulation housing which has the flat external shape in the thickness direction of this metal plate for a short circuit, and hold | maintains the said metal plate for a short circuit is suitable. By fixing the joint connector on the trunk line in a posture in which the short-circuit metal plate is substantially orthogonal to the radial direction of the trunk line, the projecting dimension of the joint connector from the trunk line can be further reduced, and the wire Further thinning of the entire harness can be promoted.

  The present invention also includes a plurality of circuit components that respectively constitute a plurality of short-circuits, and each circuit component includes a plurality of electric wires and a plurality of connectors for external connection connected to one end of these electric wires. A method for manufacturing a wire harness in which the other terminals of each electric wire are short-circuited, and forming a main line by bundling the electric wires included in each of the circuit constituent members, and forming the main line Before or after the process, the external connection connector connection process for connecting the external connection connector to one terminal of each electric wire, and the other of the electric wires included in the common circuit constituent member before or after the trunk line forming process A short-circuiting step for short-circuiting the terminals, and after completion of each of the steps, a binding tape is wound around the electric wire constituting the trunk line to hold the binding state, and the job Fixing the joint connector on the trunk line by collectively winding the binding tape around the joint connector and the trunk line at a position where the joint connector is installed, and forming the trunk line In the process, for at least one circuit constituent member, the weight per unit length of the conductor as a wire contained in the circuit constituent member has a copper-based electric wire made of copper or a copper alloy and a conductor of other materials, A non-copper-type electric wire having at least one of the diameters smaller than the copper-type electric wire is used in combination, and the short-circuiting step attaches a wire-side terminal to the other end of the copper-type electric wire and the non-copper-type electric wire, respectively. And fitting each of the wire side terminals to the shorting conductor of the joint connector including the shorting conductor that can be fitted to each of the wire side terminals. Is intended to include a shorting the other between terminals of the electric wires by.

  In this method, for at least one of the circuit components, a copper-based electric wire and a non-copper-based electric wire are used in combination, so that the wire harness can be made thinner or lighter by using the non-copper-based electric wire. Can do. Moreover, these copper-based electric wires and non-copper-type electric wires have an electric wire side terminal attached to the end of the electric wire and a short-circuiting conductor to which these electric wire side terminals can be fitted regardless of the difference in the material of the conductor. By the joint connector including, it is mutually short-circuited without inconvenience. Then, the binding tape is wound in a state where the circuit component members are bundled together, and at the position where each joint connector is disposed, the binding tape is wound around the main wire of the wire harness and the joint connector is connected to the main wire. Fixing is performed efficiently in a batch.

  As described above, according to the present invention, by mixing a copper-based wire and a non-copper-based wire in at least one circuit constituent member, the entire wire harness can be made thinner and lighter, and the above-mentioned The electric wires in which the copper-based electric wires and the non-copper-based electric wires are mixed can be short-circuited without any inconvenience by the combination of the electric wire side terminal and the joint connector attached thereto. In addition, the wire harness can be efficiently manufactured by a simple process.

  A preferred embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a wiring diagram of a wire harness 100 according to an embodiment of the present invention. The wire harness 100 according to this embodiment includes three short-circuit circuits, and includes three circuit constituent members 50A, 50B, and 50C for forming the respective short-circuit circuits, which are shown in FIG. 4 to be described later. They are integrated with each other by a binding tape 18.

  However, the number of short circuits included in the wire harness according to the present invention is not limited to three. Moreover, the member which comprises circuits other than a short circuit may be included.

  The circuit constituent member 50A corresponds to a so-called sub-harness, and is connected to a plurality (three in the illustrated example) of electric wires 52A, 53A, 54A and one terminal of these electric wires 52A, 53A, 54A. A plurality of external connection connectors 56A, 57A, 58A and a joint connector JCA connected to the other terminal so as to short-circuit the other terminals of the electric wires 52A, 53A, 54A. Similarly, the circuit component member 50B includes a plurality of (three in the illustrated example) wires 52B, 53B, 54B and a plurality of external connection connections respectively connected to one terminal of these wires 52B, 53B, 54B. Including connectors 56B, 57B, 58B and joint connectors JCB connected to the other terminals so as to short-circuit the other terminals of the electric wires 52B, 53B, 54B. (In the example of the figure, three wires) 52C, 53C, 54C, a plurality of connectors for external connection 56C, 57C, 58C respectively connected to one terminal of these wires 52C, 53C, 54C, and each of the wires 52C , 53C, 54C, and a joint connector JCC connected to the other terminal so as to short-circuit each other terminal.

  Each of the external connection connectors is connected to various devices and other electric loads (for example, ECU and switch) mounted on the vehicle, and the devices are connected to each other by the short circuit by the connection. Examples of specific structures of the joint connectors JCA, JCB, and JCC will be described in detail later.

  Each said electric wire is fundamentally comprised by the copper-type electric wire (The electric wire which the conductor consists of copper or a copper alloy) with low resistance and high rust prevention property. However, as a characteristic of the wire harness 100, at least one of the circuit constituent members 50A, 50B, and 50C is a composite circuit member including the copper-based electric wire and the other non-copper-based electric wires as electric wires constituting the circuit constituting member 50A, 50B, 50C. ing. Specifically, any one of the circuit constituent members 50A, 50B, and 50C may be a composite circuit member, or all the circuit constituent members 50A, 50B, and 50C may be composite circuit members. . For example, when the circuit constituent member 50A is a composite circuit member, a non-copper electric wire is used for a part of the electric wires 52A, 53A, 54A, and a copper electric wire is used for the rest.

  As the non-copper-based electric wire, from the viewpoint of thinning or weight reduction of the wire harness 100, a composite electric wire including a conductor formed of copper or a copper alloy and a strand formed of stainless steel, An aluminum-based electric wire whose conductor is formed of aluminum or an aluminum alloy is suitable. The composite electric wire can be thinned by including a high-strength stainless steel wire, and can be an electric wire having a diameter smaller than that of the copper-based electric wire. Moreover, since the specific gravity of the conductor of the said aluminum-type electric wire is small, it can be made into the electric wire whose weight per unit length is smaller than the said copper-type electric wire, and the use contributes to the weight reduction of the whole wire harness. Can do.

  On the other hand, however, these non-copper wires have significant restrictions in use. For example, since the composite electric wire has a higher resistance than a copper-based electric wire, there is a restriction that the composite electric wire cannot be used in a portion having a high required voltage. Also, the aluminum or aluminum alloy constituting the conductor of the aluminum-based electric wire is more easily rusted than copper or copper alloy and has a lower strength. There is a restriction that it is difficult to apply.

  However, these restrictions on the non-copper-type electric wires are overcome by using the non-copper-type electric wires and the copper-type electric wires in combination for at least one circuit constituent member. Specifically, when the composite electric wire is used as the non-copper electric wire, a copper electric wire may be used in a portion having a high required voltage, and when the aluminum electric wire is used as the non-copper electric wire. In this case, it is sufficient that a copper-based electric wire is used in a part that is easily subjected to rain water or the like or a part that is remarkably bent.

  Thus, the electric wire which comprises each circuit structural member is bundled together, the trunk line of the wire harness 100 is comprised, and the said wire tape 100 is wound around the electric wire which forms this trunk line, The wire harness 100 whole Are integrated. In this wire harness 100, the use of a non-copper-based electric wire included in at least one circuit constituent member can significantly contribute to thinning and weight reduction of the entire wire harness 100.

  This effect is the same in the wiring configuration shown in FIG. In this wiring example, the short circuit between the electric wires in each of the circuit constituent members 50A to 50C is performed by a common joint connector JCT. However, in this case, the arrangement position of the joint connector JCT is remarkably limited. Therefore, the electric wires 52A, 52B,... 53C, from the joint connector JCT to the external connection connectors 56A, 57A,. The required length of 54C increases. Therefore, the wiring configuration as shown in FIG. 1 is more preferable from the viewpoint of thinning or weight reduction of the entire wire harness.

  Here, the connection of the external connection connector and the joint connector to each of the electric wires may be performed before the formation of the trunk line. For example, as in the short-circuit connection method shown in FIG. 3 and FIG. The connection of the joint connector is performed after the formation, whereby the efficient production of the wire harness 100 is achieved.

  Specifically, the short-circuit connection method includes the following procedures. In the following description and FIGS. 3 to 8, for the sake of convenience, the reference numerals common to all the electric wires included in each of the circuit constituent members 50 </ b> A, 50 </ b> B, 50 </ b> C are collectively referred to as “electric wires 10” for convenience. Each joint connector JCA, JCB, JCC is collectively referred to as “joint connector JC”. Further, in the example shown in FIG. 1, the number of electric wires included in each of the circuit constituent members 50 </ b> A to 50 </ b> C is 3, but in the method example shown in FIGS. 3 to 8, the four electric wires 10 are short-circuited to each other. It is shown on the assumption.

1) Wiring of electric wires 10 A plurality of electric wires 10 are bundled to form a trunk line 12, and plural electric wires (four in this embodiment) of the electric wires 10 are used as the branched electric wires 14. It is drawn from the main line 10. For each electric wire 10, a so-called covered electric wire is used, and the electric wire 10 has a conductor and an insulating coating that covers the conductor.

  In this embodiment, in order to connect each branch wire 14 to the common joint connector JC, a wire-side terminal 20 as shown in FIGS. 3 and 4 is attached to the end of each branch wire 14 in advance. Yes. The electric wire side terminal 20 has a female electrical contact portion 22 and an electric wire crimping portion 24 at the front and rear. The electrical contact portion 22 has a hollow rectangular tube-shaped main body and a contact spring piece 26 provided so as to be able to bend in the main body. From the bottom wall of the electrical contact portion 22, a locked piece 28 for locking to the joint connector JC protrudes outward.

  The terminal of each branch wire 14 is previously subjected to a treatment for removing the insulating coating and exposing the conductor, and the wire crimping portion 24 holds the terminal of the conductor and the insulating coating in the vicinity thereof. By being bent so as to be inserted, it is crimped to the end of the branch wire 14 and is electrically connected to the conductor.

  The combination of the electric wire side terminal 20 and the joint connector JC is such that when the branch electric wire 14 includes a copper electric wire and a non-copper electric wire (that is, a plurality of types of electric wires having different conductor materials are mixed). ) Also makes it possible to short-circuit these wires without inconvenience. For example, the method of integrating the conductor terminals of a plurality of electric wires by welding as a general short-circuit means is difficult to apply when the materials of the conductors are different from each other. The short circuit by the terminal 20 and the joint connector JC can be performed regardless of the material of the conductor constituting the electric wire.

2) Connection to the joint connector JC By connecting the electric wire side terminals 20 mounted on the branch electric wires 14 to the joint connector JC as shown in FIGS. 5 to 8, the electric wire side terminals 20 are short-circuited. Is done.

  The joint connector JC shown in FIGS. 5 to 8 includes a single short-circuit conductor 30 and an insulating housing 40 for holding the short-circuit conductor 30. The short-circuiting conductor 30 is made of a conductive material, and is short-circuited between the electric wire side terminals 20 by being commonly connected to the electric wire side terminals 20. The insulating housing 40 is integrally formed of an insulating material such as synthetic resin, and can be held in a state in which the shorting conductor 30 is stored, specifically, the thickness direction of the shorting conductor 30. It has a flat shape.

  The short-circuiting conductor 30 according to this embodiment is formed of a short-circuiting metal plate formed by punching a single metal plate into an appropriate shape, and a plurality of electrical contact portions 32 and the short-circuiting portion 34 are integrated. Have. Each electrical contact portion 32 is a male (tab) fitting portion that can be fitted into the female electrical contact portion 22 of each electric wire side terminal 20, and these electrical contact portions 32 are parallel to the width direction thereof. Arranged in the direction. The short-circuit portion 34 extends in the arrangement direction of the electrical contact portions 32, and the short-circuit portions 34 are connected to the base ends of the electrical contact portions 32.

  The insulating housing 40 has a pair of side walls that connect the flat top wall 41 and the bottom wall 42 that are parallel to each other, and both ends of the walls 41 and 42 in the width direction (that is, the left end portions and the right end portions). 44 integrally. These walls 41, 42, 44 constitute the outer wall of the insulating housing 40.

  The rear end portion (the right end portion in FIGS. 5 to 8) of the outer wall constitutes a conductor holding portion 43. The short-circuit portion 34 is held by the conductor holding portion 43 by press-fitting the short-circuit portion 34 of the short-circuiting conductor 30 into the conductor holding portion 43 from the opening 43 a.

  The conductor holding portion 43 has a shape for holding the short-circuit portion 34 of the short-circuit conductor 30. Specifically, it has an outer shape that is slightly larger than the short-circuit portion 34 and extends in the arrangement direction of the electrical contact portions 32 of the short-circuit conductor 30, and the short-circuit portion 34 is inserted from the rear (left side in FIG. 8). A possible short-circuit metal plate insertion opening 43a is enclosed. The short-circuit portion 34 is press-fitted into the conductor holding portion 43 from the insertion port 43a with the electrical contact portions 32 facing forward. More specifically, projections 34 a as shown in FIG. 8 are formed at both ends in the width direction of the short-circuit portion 34, and the conductor holding portions 43 are formed by these projections 34 a biting into the inner side surface of the conductor holding portion 43. The short-circuit part 34 is fixed to.

  A plurality (three in the figure) of partition walls 45 parallel to the side walls 44 are arranged in the connector width direction at a portion in front of the conductor holding portion 43. Each partition wall 45 defines a terminal accommodating chamber 47 between another partition wall 45 or the side wall 44 adjacent to the partition wall 45. Each terminal accommodating chamber 47 has a shape that opens forward and allows the electric wire side terminal 20 to be inserted through the opening. Each electrical contact portion 32 of the short-circuiting conductor 30 protrudes from the rear in each terminal accommodating chamber 47, and the electrical contact portion 22 of the electric wire side terminal 20 inserted into the terminal accommodating chamber 47 corresponds to this. By fitting with the electrical contact portion 32, the electric wire side terminal 20 and the short-circuiting conductor 30 are electrically connected, and these are electrically short-circuited.

  A lance (terminal locking portion) 46 is formed on the bottom wall 42 at a position corresponding to each terminal accommodating chamber 47. Each lance 46 is surrounded by a substantially U-shaped slit 42 a (FIG. 5) formed in the bottom wall 42, and can be bent and deformed in the thickness direction with respect to the main body of the bottom wall 42. A free end portion is provided, and a claw-like locking portion 46a is formed at the free end portion. As shown in FIG. 5, the locking portion 46 a is bent and deformed to come into contact with the inserted electric wire side terminal 20 to allow the electric wire side terminal 20 to pass through, and after passing through the engaging portion 46 a elastically to a proper position. By returning, the locked portion 28 of the electric wire side terminal 20 is restrained from the rear. That is, the electric wire side terminal 20 is locked at a position where the electric wire side terminal 20 is fitted to the electric contact portion 32.

  Therefore, in this joint connector JC, the short-circuiting is performed by inserting the wire-side terminal 20 at the end of each branch wire 14 into the terminal accommodating chamber 47 and fitting it into the electrical contact portion 32 of the short-circuiting conductor 30. Short-circuiting between the electric wire side terminals 20 using the working conductor 30 as a medium is achieved.

3) Installation of joint connector JC The joint connector JC to which the branch wires 14 are connected as described above is installed on the trunk line 12 so that the branch wires 14 are folded. Specifically, in this method example, the joint connector JC is folded so that the intermediate portion 16 of each branch wire 14 bulges in a direction along the trunk line 12, and the joint connector JC is connected to the branch start point 15 (FIG. 1). ). This installation may be performed immediately before the next tape winding operation, for example, and the operator may simply press the joint connector JC with a finger or the like, or the joint connector JC may be temporarily fixed with an adhesive tape or the like. It may be done.

  The length of the slack portion of the branch wire 14 folded in this way is shorter than the length of the original branch wire 14 (about half in this embodiment). The operation of winding the tape 18 is easy. However, the present invention is not necessarily limited to the one in which the branch wire 14 is folded. For example, the joint connector JC may be installed in a state where the branch wire 14 is along the trunk line 12.

4) Tape winding operation A binding tape 18 is spirally wound around the electric wires 10 constituting the trunk line 12 so as to maintain the binding state. This winding may be performed so as to cover the entire surface of the main line 12 as shown in FIG. 2, or may be performed with a gap where a part of the main line 12 is exposed.

  Further, in the portion where the joint connector JC is installed, as shown in FIG. 2, the binding is collectively performed around the joint connector JC, the branch wire 14 connected thereto, and the trunk line 12. The tape 18 is wound. Accordingly, the joint connector JC is efficiently fixed using the binding tape 18. The joint connector JC and the branch wire 14 fixed in this manner are covered from the outside by the binding tape 18, and direct contact between these and other members is prevented. Handling of 100 becomes easy.

  In the present invention, the specific shape and structure of the joint connector JC are not limited. However, if the outer shape of the joint connector JC is a flat shape as shown in the figure (a shape that is flat in the thickness direction of the short-circuiting conductor 30 made of a single metal plate), the short-circuiting conductor 30 has a diameter of the trunk line 12. By fixing the joint connector JC on the trunk line 12 in a posture substantially orthogonal to the direction, the projecting dimension of the joint connector JC from the trunk line 12 is effectively suppressed. This reduction in the protrusion amount can contribute to further thinning of the entire wire harness 100.

It is a schematic diagram which shows the wiring form of the wire harness which concerns on embodiment of this invention. It is a schematic diagram which shows the other wiring form of the wire harness which concerns on embodiment of this invention. It is a perspective view which shows the short circuit connection example of the wire harness which concerns on embodiment of this invention, Comprising: It is a figure which shows the state in which the common joint connector was connected to the terminal of several branch electric wires. It is a perspective view which shows the short circuit connection example of the wire harness which concerns on embodiment of this invention, Comprising: It is a figure which shows the state by which the said joint connector was fixed on the trunk line using the tape for binding. It is a cross-sectional side view which shows the state in the middle of the wire side terminal with which the terminal of the said branch wire was mounted | worn being inserted in the said joint connector. It is a cross-sectional side view which shows the state by which the electric wire side terminal with which the terminal of the said branch electric wire was mounted | worn was completely inserted in the said joint connector. It is a bottom view of the joint connector. It is a cross-sectional plan view of the joint connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electric wire 12 Wire harness trunk line 14 Branch electric wire 18 Bundling tape 20 Electric wire side terminal 30 Short-circuiting conductor 32 Electrical contact part (fitting part)
34 Short-circuit part 40 Insulating housing 50A, 50B, 50C Circuit component 52A, 53A, 54A Electric wire 52B, 53B, 54B included in circuit component 50A Electric wire 52C, 53C, 54C included in circuit component 50B Electric wires included 56A, 57A, 58A External connection connectors 56B, 57B, 58B included in the circuit component 50A External connection connectors 56C, 57C, 58C included in the circuit component 50B For external connections included in the circuit component 50C Connector 100 Wire harness JC, JCA, JCB, JCC Joint connector

Claims (4)

A wire harness including a plurality of short-circuits,
A plurality of circuit components constituting each of the short circuits, and a binding tape for fixing the circuit components in a state where these circuit components are bundled together,
At least one of the circuit components includes a plurality of electric wires, a plurality of connectors for external connection connected to one end of these electric wires, and an electric wire side attached to the other end of these electric wires. A terminal and a joint connector that includes a short-circuiting conductor that can be fitted to each of the electric wire-side terminals, and that short-circuits the other terminals of the electric wires by fitting the short-circuiting conductor with the electric wire-side terminals. And the conductor constituting the wire as the wire includes a copper-based wire made of copper or a copper alloy and a conductor of other materials, and at least one of the weight per unit length and the diameter is the copper A wire harness including a short circuit characterized in that non-copper wires smaller than the system wires are mixed and these wires are short-circuited to each other by the common joint connector. In the wire harness including the short circuit according to claim 1,
The non-copper-type electric wire includes a composite electric wire having a smaller diameter than the copper-type electric wire, including a wire formed of copper or a copper alloy and a wire formed of stainless steel. A wire harness including a short circuit, wherein the wire harness is formed of aluminum or an aluminum alloy and includes at least one of aluminum-based wires having a weight per unit length smaller than that of the copper-based wires. A wire harness comprising the short circuit according to claim 1 or 2,
The short-circuiting conductor of the joint connector included in the composite circuit member is formed of a single metal plate, and includes a plurality of fitting portions that respectively fit with the wire-side terminals provided at the ends of the wires. A short-circuit metal plate for short-circuiting the wires in a combined state, and an insulating housing having a flat outer shape in the thickness direction of the short-circuit metal plate and holding the short-circuit metal plate, and the short-circuit metal A wire harness including a short circuit, wherein a plate is fixed on the trunk line in a posture substantially orthogonal to the radial direction of the trunk line. A plurality of circuit constituent members each constituting a plurality of short-circuits, each circuit constituent member including a plurality of electric wires and a plurality of external connection connectors connected to one end of these electric wires; A method for manufacturing a wire harness in which terminals of each other are short-circuited,
A main line forming step of forming a main line by bundling the electric wires included in each circuit constituent member,
An external connection connector connection step for connecting the external connection connector to one end of each electric wire before or after the trunk formation step,
Before or after the main line forming step, a short-circuit step of short-circuiting the other terminals of the electric wires included in the common circuit constituent member,
After the completion of each step, the binding tape is wrapped around the electric wire constituting the trunk line to maintain the binding state, and the joint connector is installed across the joint connector and the trunk line at the installation position. Fixing the joint connector on the trunk line by collectively winding the binding tape around the periphery,
In the trunk line forming step, at least one circuit constituent member has a copper-based electric wire made of copper or a copper alloy as a wire included in the circuit constituent member and a conductor of other materials per unit length. A non-copper-type electric wire in which at least one of the weight and diameter is smaller than the copper-type electric wire,
The short-circuiting step includes attaching a wire-side terminal to the other end of the copper-based wire and the non-copper-based wire, and a joint connector including a short-circuiting conductor that can be fitted to each of the wire-side terminals. A method of manufacturing a wire harness including a short circuit, comprising: short-circuiting the other end of each electric wire by fitting each electric wire side terminal to a short-circuiting conductor.

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