CN115938681A - Wire harness manufacturing method and wire harness - Google Patents

Abstract

The invention aims to provide a wire harness manufacturing method and a wire harness, which can appropriately manufacture a wire harness formed with a plurality of branch parts. The wire harness manufacturing method includes: a branch wiring support step (step ST 1) of wiring the first branch trunk line and the second branch trunk line in different directions, and forming a plurality of first branch portions arranged at intervals on the first branch trunk line and a plurality of second branch portions arranged at intervals on the second branch trunk line while supporting the branch trunk lines with jigs, respectively; a folding step (step ST 2) of folding the first branch trunk line and the second branch trunk line, bundling them in the same direction, and alternately arranging the first branch parts and the second branch parts; and a tape winding and fixing step (step ST 3) of winding the fixing tape between the first branch portion and the second branch portion and fixing the first branch trunk line and the second branch trunk line to each other.

Description

Wire harness manufacturing method and wire harness

Technical Field

The invention relates to a wire harness manufacturing method and a wire harness.

Background

For example, patent document 1 discloses a method of manufacturing a wire harness in which a first wire harness portion and a second wire harness portion are connected via an intermediate wire harness portion. The manufacturing method of the wire harness comprises the following steps: a step of bundling the first wire harness portion; bundling the second wire harness portion in a state where the intermediate wire harness portion is bent; and a step of bundling the intermediate wire harness portion in a state where the intermediate wire harness portion linearly extends.

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. 2014-32840

Disclosure of Invention

Technical problem to be solved by the invention

However, in the method of manufacturing a wire harness described in patent document 1, for example, when manufacturing a wire harness in which branch lines are branched from a trunk line, a method of manufacturing a wire harness in which branch intervals of the branch lines are narrowed while suppressing a reduction in workability is desired.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a wire harness manufacturing method and a wire harness that can appropriately manufacture a wire harness in which a plurality of branch portions are formed.

Means for solving the problems

In order to achieve the above object, a wire harness manufacturing method according to the present invention includes:

a branch wiring support step of wiring first branch trunk lines and second branch trunk lines branched from a trunk line in mutually different directions, and forming a plurality of first branch portions and a plurality of second branch portions while supporting the first branch trunk lines and the first branch lines with connectors with a space therebetween, and the second branch portions and the second branch lines with connectors, respectively, branching from the first branch portions and the second branch portions with a space therebetween; a folding step of folding the first branch trunk line and the second branch trunk line to be bundled in the same direction after the branch wiring support step, and arranging the first branch parts and the second branch parts alternately in parallel in the same direction; and a tape winding and fixing step of winding a fixing tape between the first branch portion and the second branch portion adjacent to the first branch portion between the first branch portion and the second branch portion, and fixing the first branch trunk line and the second branch trunk line to each other.

In order to achieve the above object, a wire harness according to the present invention includes:

a first branch trunk line and a second branch trunk line that branch from a trunk line and are bundled in the same direction; a plurality of first branch lines branching from a plurality of first branch locations located at intervals on the first branch trunk line, and provided with a connector at an end; a plurality of second branch lines branching from a plurality of second branch portions located at intervals on the second branch trunk line, and provided with a connector at an end; and a band wound around the first branch trunk line and the second branch trunk line between the first branch portions and the second branch portions alternately arranged in the same direction, the band fixing the first branch trunk line and the second branch trunk line to each other.

Effects of the invention

The method for manufacturing a wire harness and the wire harness according to the present invention have an effect that a wire harness having a plurality of branch portions formed therein can be appropriately manufactured.

Drawings

Fig. 1 is a schematic diagram showing a schematic configuration of a wire harness according to an embodiment.

Fig. 2 is a schematic diagram showing a schematic configuration of a jig used in the wire harness manufacturing method according to the embodiment.

Fig. 3 is a schematic diagram illustrating a method of manufacturing a wire harness according to a comparative example.

Fig. 4 is a schematic diagram illustrating a method of manufacturing a wire harness according to a comparative example.

Fig. 5 is a flowchart illustrating a wire harness manufacturing method according to the embodiment.

Fig. 6 is a schematic diagram illustrating a wire harness manufacturing method according to an embodiment.

Fig. 7 is a schematic diagram illustrating a method of manufacturing a wire harness according to the embodiment.

Fig. 8 is a schematic diagram illustrating a wire harness manufacturing method according to an embodiment.

Fig. 9 is a flowchart illustrating a harness manufacturing method according to a modification.

Fig. 10 is a schematic diagram illustrating a harness manufacturing method according to a modification.

Fig. 11 is a schematic diagram illustrating a harness manufacturing method according to a modification.

Description of the symbols

C connector

D connection device

J-shaped supporting clamp

P branch site

First branch position of P1, P1A, P1B, P1C

P2, P2A, P2B second branch site

T1, T2 branch position fixing band

Fixing band among branches T3, T3A, T3B, T3C, T3D, T3E and T3F

T4 tag tape

W wiring material

WA trunk line

WA1 first branch trunk line

WA2 second branch trunk line

WB branch

WB1 first branch

WB2 second branch

WH wire harness

WX base trunk line

Detailed Description

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiment. The components in the following embodiments include components that can be easily replaced by those skilled in the art, or substantially the same components.

[ embodiment ]

The wire harness manufacturing method according to the present embodiment is a method of manufacturing a wire harness WH shown in fig. 1 and the like. The wire harness WH according to the present embodiment is configured such that, for example, in order to connect devices mounted on a vehicle, a plurality of wiring materials W used for power supply and signal communication are bundled together into a collective member, and the plurality of wiring materials W are connected to the devices by connectors or the like. The wire harness WH of the present embodiment includes a conductive wiring material W and a connector C. The wiring member W is, for example, an insulated wire in which a core wire formed by bundling a plurality of conductive metal wires is covered with an insulating coating portion. The connector C is provided at the end of the wiring material W. The connector C of the present embodiment constitutes a connection mechanism for connecting a wiring material to a device, for example, and forms an electrical connection portion with a connection device D such as a switch by being fitted with a connector, thereby electrically connecting the wiring material W to the connection device D. The wire harness WH may further include various components such as a corrugated tube, a grommet, and a fixture electrical connection box.

In such a configuration, the wire harness WH according to the present embodiment branches the branch lines WB from a plurality of branch points P, which are arranged at intervals on the trunk line WA, and the connectors C are connected to the ends of the branch lines WB. The branch point P is a point where the branch line WB branches from the trunk line WA, and a plurality of branch points P are arranged at intervals along the same direction X along the trunk line WA.

Here, in a use state where the harness WH is mounted in the vehicle, the connection devices D connected to the respective connectors C of the harness WH may be installed so that the distance between the connection devices D is as small as possible due to a layout of the connection devices D in the vehicle. In this case, it is desirable that the wire harness WH also include connectors C to which the connection devices D are connected and branch lines WB provided with the connectors C at similarly small intervals.

In addition, in the manufacturing process of such a wire harness WH, a support jig J as shown in fig. 2 may be used to support the wiring material W and the branch point P. The support jig J is also called a fork, and includes a base portion Ja placed on the work surface, a support column Jb erected on the base portion Ja, a support portion Jc formed in a U shape at the end of the support column Jb and actually supporting each portion, and the like. The support jig J supports the portion provided in the support portion Jc by floating it from the work surface on which the base portion Ja is placed.

As a method of manufacturing the wire harness WH with the connector C and the branch line WB being spaced apart from each other with the use of the support jig J, a manufacturing method according to a comparative example as shown in fig. 3 is considered. In the manufacturing method according to the comparative example shown in fig. 3, 1 branch point P located at the end of the trunk line WA is formed while being supported by the support jig J, and the plurality of branch lines WB with connectors C are branched from the 1 branch point P. However, the production method according to the comparative example shown in fig. 3 tends to be as follows: when the connecting device D is attached, the plurality of branch lines WB with the connectors C are easily entangled with each other, and it is difficult to arrange the connectors C in series.

In contrast, the manufacturing method according to the comparative example shown in fig. 4 is: the branch lines WB are branched from a plurality of branching points P arranged at intervals on the trunk line WA of 1 system. The production method according to the comparative example shown in fig. 4 tends to be as follows as compared with the production method shown in fig. 3: when the connecting device D is mounted, the plurality of branch lines WB with the connectors C are not easily intertwined with each other, and the connectors C are easily arranged in series. However, in the manufacturing method according to the comparative example shown in fig. 4, when it is desired to form a plurality of branch portions P arranged at intervals in the same direction X while being supported by the support jig J, the intervals between the branch portions P are limited by the influence of the outer shape of the support jig J. For example, in the general-purpose support jig J, the base portion Ja of the column Jb supporting the support portion Jc is circular with a diameter of about 40mm, and if the interval between the adjacent branch portions P is made narrower than 40mm, the support jigs J supporting the branch portions P interfere with each other. Therefore, in the manufacturing method according to the comparative example shown in fig. 4, when manufacturing the wire harness WH in which the interval between the connector C and the branch line WB is relatively narrowed as described above, the interval between the branch points P that can be arranged in parallel on the trunk line WA of 1 system is limited to a range in which the supporting jigs J that support the branch points P do not interfere with each other. That is, in the manufacturing method according to the comparative example shown in fig. 4, there is a limit to narrow the interval between the branch portions P due to the restriction of the supporting jig J used.

Therefore, as shown in fig. 5, 6, 7, and 8, the wire harness manufacturing method according to the present embodiment branches the branch lines WB (the first branch lines WB1 and the second branch lines WB 2) from the branch trunk lines (the first branch trunk line WA1 and the second branch trunk line WA 2) of 2 systems constituting the trunk line WA. In addition, the wire harness manufacturing method according to the present embodiment realizes the manufacture of the wire harness WH in which the connectors C are arranged and the intervals of the branch points P are narrowed by folding and winding the branch trunk lines of 2 systems so that the branch points P (the first branch point P1 and the second branch point P2) of the branch trunk lines (the first branch trunk line WA1 and the second branch line WA 2) are shifted from each other.

Hereinafter, the method for manufacturing a wire harness according to the present embodiment will be described in detail with reference to the drawings. In the following description, the description is made based on the flowchart of fig. 5, and other drawings are referred to as appropriate. In the wire harness manufacturing method described below, an operator may perform manual work using various devices, equipment, jigs, and the like, or may perform automatic work using various manufacturing devices.

The wire harness manufacturing method of the present embodiment includes a branch wiring support step (step ST 1), a folding step (step ST 2), a tape winding fixing step (step ST 3), and a connection step (step ST 4). The branch wiring support step (step ST 1) is a step of forming each branch point P (first branch point P1, second branch point P2) while wiring 2 branch trunk lines (first branch trunk line WA1, second branch trunk line WA 2) and supporting them with a support jig J. The folding step (step ST 2) is a step of folding the branch trunk lines of 2 systems (the first branch trunk line WA1 and the second branch trunk line WA 2) so that the branch points P (the first branch point P1 and the second branch point P2) are shifted from each other. The tape winding and fixing step (step ST 3) is a step of fixing the folded 2 branch trunk lines (first branch trunk line WA1 and second branch trunk line WA 2) to each other by the inter-branch fixing tape T3. The connection step (step ST 4) is a step of connecting the connection device D to the connector C. Here, a case where the wire harness manufacturing method is performed by a worker through manual work will be described.

Specifically, first, as a branch wiring support step, as shown in fig. 6, the worker wires the first branch trunk line WA1 and the second branch trunk line WA2 branched from the trunk line WX in different directions from each other. Then, the operator forms the plurality of first branch locations P1 and the plurality of second branch locations P2 on the first branch trunk line WA1 and the second branch trunk line WA2 while supporting the plurality of first branch locations P1 and the plurality of second branch locations P2, respectively, by the support jig J (step ST 1).

The plurality of first branch positions P1 formed in the branch wiring support step (step ST 1) are positions that are spaced apart from each other on the first branch trunk line WA1 and from which the first branch wires WB1 with the connectors C are branched. On the other hand, the plurality of second branch positions P2 are positions that are spaced apart from each other on the second branch trunk line WA2 and from which the second branch line WB2 with the connector C is branched.

Here, the trunk line WX constitutes a wire harness at a stage before the first branch trunk line WA1 and the second branch trunk line WA2 are branched, and bundles of all the wiring materials W constituting the first branch line WB1 and the second branch line WB2 provided with the connectors C at the ends thereof are collected. The first branch trunk WA1 constitutes a wire harness at a previous stage of branching each first branch line WB1, and a plurality of wiring materials W constituting the first branch line WB1 are bundled. On the other hand, the second branch trunk WA2 constitutes a wire harness at a previous stage of branching each second branch line WB2, and a plurality of wiring materials W constituting the second branch line WB2 are bundled.

The work in the branch wiring support step (step ST 1) is performed on the work surface 100 such as a jig plate. A plurality of support jigs J for supporting the first branch point P1 and the second branch point P2 are placed on the work surface 100 at positions where the first branch trunk WA1 and the second branch trunk WA2 are routed, respectively, with a gap therebetween. That is, the plurality of support jigs J are provided in 2 sets in mutually different directions corresponding to the first branch trunk line WA1 and the second branch trunk line WA2, respectively. The support jig devices J are provided at positions spaced apart so as not to interfere with each other, and at positions (positions designed in advance) where the first branch point P1 and the second branch point P2 are formed in the first branch trunk line WA1 and the second branch trunk line WA2, respectively. In addition, the work surface 100 is provided with a connector receiving jig JC that receives the connectors C provided at the ends of the first branch lines WB1 and the second branch lines WB2.

In the branch wiring support step (step ST 1), the worker branches the first branch trunk line WA1 and the second branch trunk line WA2 from the end of the trunk line WX at intervals, and wires the branch trunk lines along the support jigs J. Then, the operator supports the first branch point P1 on the first branch trunk WA1 by the support jig J, and at each first branch point P1, branches 1 first branch lines WB1 from the wire harness constituting the first branch trunk WA1, and holds the connector C provided at the end of the first branch line WB1 by the connector receiving jig JC. In addition, the operator winds the branch part securing tape T1 around each first branch part P1, and forms and secures each first branch part P1 at a position determined at the time of design. Similarly, the worker supports the second branch point P2 on the second branch trunk WA2 by the support jig J, and at each second branch point P2, branches 1 second branch line WB2 from the wire harness constituting the second branch trunk WA2, and holds the connector C provided at the end of the second branch line WB2 by the connector receiving jig JC. In addition, the operator winds the branch portion fastening tape T2 around each second branch portion P2, and forms and fixes each second branch portion P2 at a position determined at the time of design.

As an example, the wire harness WH illustrated in fig. 6 has 3 first branch points P1 formed in the first branch trunk WA1. Here, when 3 first branch points P1 are described separately, they are referred to as "first branch point P1A", "second first branch point P1B", and "third first branch point P1C" in order from the side of the trunk line WX, and when they do not need to be described particularly separately, they may be simply referred to as "first branch point P1".

In this wire harness WH, a branch portion between the first branch trunk line WA1 and the second branch trunk line WA2 in the trunk line WX and a first branch portion P1A located closest to the trunk line WX in the first branch trunk line WA1 can be used in combination. That is, in this wire harness WH, at the first branch position P1A, the first branch trunk WA1 and the second branch trunk WA2 branch, and 1 first branch line WB1 branches from the first branch trunk WA1. In addition, in this wire harness WH, 1 first branch line WB1 branches from the first branch trunk WA1 at the second first branch position P1B. In this wire harness WH, the 2 first branch wires WB1 are finally branched at a third first branch position P1C located at the end portion of the first branch trunk line WA1 on the most opposite side from the trunk line WX. That is, the wire harness WH includes a total of 3 first branch points P1 and a total of 4 first branch lines WB1. The wire harness WH is provided with a bent portion P1a at a mid-web portion of one of the 2 first branch lines WB1 branched from the third first branch point P1C, and the bent portion P1a is also supported by the support jig J. The bent portion P1a constitutes 1 of the plurality of branch portions P in the final form in which the first branch trunk line WA1 and the second branch trunk line WA2 are bundled to constitute the trunk line WA (see fig. 1, 8, and the like).

In the wire harness WH illustrated in fig. 6, in the first branch trunk WA1, an interval between the first branch position P1A and the second first branch position P1B is "60mm", and an interval between the second first branch position P1B and the third first branch position P1C is "40mm". In the wire harness WH illustrated in fig. 6, the length of the first branch line WB1 branched from the first branch point P1A is "100mm", the length of the first branch line WB1 branched from the second first branch point P1B is "80mm", the length of one first branch line WB1 branched from the third first branch point P1C is "80mm", and the length of the other first branch line WB1 branched from the third first branch point P1C is "120mm".

On the other hand, the wire harness WH illustrated in fig. 6 has 2 second branch positions P2 formed on the second branch trunk WA 2. Here, when 2 second branch points P2 are described separately, they are referred to as "first second branch point P2A" and "second branch point P2B" in order from the side of the trunk line WX, and when it is not necessary to describe them particularly separately, they may be simply referred to as "second branch point P2".

In this wire harness WH, a first second branch point P2A located closest to the trunk line WX in the second branch trunk line WA2 is disposed at a distance from the first branch point P1A (a branch point between the first branch trunk line WA1 and the second branch trunk line WA2 in the trunk line WX). The wire harness WH branches from the second branch trunk line WA2 at the first second branch position P2A into 1 second branch line WB2. Then, in this wire harness WH, at a second branch position P2B located at an end portion of the second branch trunk line WA2 on the most opposite side to the base trunk line WX, finally 2 second branch wires WB2 are branched. Specifically, the wire harness WH includes a total of 2 second branch positions P2 and a total of 3 second branch lines WB2.

In the second branch trunk WA2 of the wire harness WH illustrated in fig. 6, the interval between the first branch point P1A and the first second branch point P2A is "40mm", and the interval between the first second branch point P2A and the second branch point P2B is "40mm". In the wire harness WH illustrated in fig. 6, the length of the second branch WB2 branched from the first second branch point P2A is "80mm", the length of the one second branch WB2 branched from the second branch point P2B is "80mm", and the length of the other second branch WB2 branched from the second branch point P2B is "120mm".

Next, after the branch wiring support step (step ST 1), as a folding step, as shown in fig. 7, the worker folds and bundles the first branch trunk line WA1 and the second branch trunk line WA2 in the same direction X, and alternately arranges the first branch position P1 and the second branch position P2 in the same direction X (step ST 2).

For example, in the folding-back step (step ST 2), the worker removes the second branch positions P2 from the support jig J and removes the connectors C at the ends of the second branch lines WB2 from the connector receiving jig JC. At this time, the worker also removes the first branch point P1A from the support jig J, and also removes the connector C at the end of the first branch line WB1 branched from the first branch point P1A from the connector receiving jig JC. Then, the operator turns over the second branch trunk line WA2 toward the first branch trunk line WA1 with the first branch position P1A as a fulcrum so that the second branch position P2 is positioned between the first branch positions P1, and binds the second branch trunk line WA2 to the first branch trunk line WA1 in such a positional relationship.

Here, as illustrated in fig. 8, the wire harness WH folds the first branch trunk line AW1 and the second branch trunk line WA2 and bundles them in the same direction X in such a positional relationship that the first second branch position P2A is located between the first branch position P1A and the second first branch position P1B, and the second branch position P2B is located between the second first branch position P1B and the third first branch position P1C.

Next, after the folding process (step ST 2), as a tape winding and fixing process, as shown in fig. 8, the worker winds the inter-branch fastening tape T3 around the first branch trunk line WA1 and the second branch trunk line WA2 between the first branch point P1 and the second branch point P2 adjacent to the first branch point P1, and fixes the first branch trunk line AW1 and the second branch trunk line WA2 to each other (step ST 3). For example, in the tape winding and fixing step (step ST 3), the worker removes each first branch line P1 and the bent portion P1a from the support jig J, removes the connector C at the end of each first branch line WB1 from the connector receiving jig JC, and performs the tape winding and fixing step (step ST 3).

As an example, the harness WH illustrated in fig. 8 has the inter-branch fastening tape T3 wound around 6 points in total. Here, when the inter-branch fastening tapes T3 at 6 are described separately, they are referred to as "the first inter-branch fastening tape T3A", "the second inter-branch fastening tape T3B", "the third inter-branch fastening tape T3C", "the fourth inter-branch fastening tape T3D", "the fifth inter-branch fastening tape T3E", and "the sixth inter-branch fastening tape T3F" in this order from the side of the trunk line WX, and may be simply referred to as "the inter-branch fastening tapes T3" when they need not be described particularly separately.

Here, as illustrated in fig. 8, the wire harness WH winds the first inter-branch fastening tape T3A between the first branch position P1A and the first second branch position P2A. The first inter-branch fixing tape T3A is wound around the first branch line WB1 branched from the first branch position P1A in addition to the first branch line WA1 and the second branch line WA2, and binds and fixes the first branch line AW1, the second branch line WA2, and the first branch line WB1 to each other. In addition, the wire harness WH winds the second inter-branch fastening tape T3B between the first inter-branch fastening tape T3A and the first second branch portion P2A. Similarly, the wire harness WH winds the third inter-branch fastening tape T3C between the first second branch position P2A and the second first branch position P1B. The wire harness WH winds the fourth inter-branch fastening tape T3D between the second first branch portion P1B and the second branch portion P2B. The wire harness WH winds the fifth inter-branch fastening tape T3E between the second branch portion P2B and the third first branch portion P1C. The wire harness WH has a bent portion P2a formed at the middle-abdominal portion of one of the 2 second branch lines WB2 branched from the second branch portion P2B, and a sixth inter-branch fastening tape T3F is wound between the third first branch portion P1C and the bent portion P2 a. The bent portion P2a constitutes 1 of the plurality of branch portions P in the final form in which the first branch trunk line WA1 and the second branch trunk line WA2 are bundled to constitute the trunk line WA (see fig. 1 and the like as well). The second inter-branch fastening tape T3B, the third inter-branch fastening tape T3C, the fourth inter-branch fastening tape T3D, the fifth inter-branch fastening tape T3E, and the sixth inter-branch fastening tape T3F are wound around the first trunk line WA1 and the second trunk line WA2, respectively, and the first trunk line AW1 and the second trunk line WA2 are bound and fixed to each other.

In the wire harness WH illustrated in fig. 8, the interval between the first branch portion P1A and the first inter-branch fastening tape T3A is "20mm", the interval between the first inter-branch fastening tape T3A and the first second branch portion P2A is "20mm", the interval between the first second branch portion P2A and the second first branch portion P1B is "20mm", the interval between the second first branch portion P1B and the second branch portion P2B is "20mm", the interval between the second branch portion P2B and the third first branch portion P1C is "20mm", the interval between the third first branch portion P1C and the bent portion P2A is "20mm", and the interval between the bent portion P2A and the bent portion P1A is "20mm". The lengths of the wire harness WH illustrated in fig. 8 from the inter-branch tape T3, the first branch portion P1, the bent portions P1a, P2a, and the like of the first branch line WB1 and the second branch line WB2 to the connector C are "80mm", respectively.

Next, after the above-described tape winding and fixing step (step ST 3), as a connecting step, as shown in fig. 1, the operator connects a connecting device D such as a switch to each connector C (step ST 4), and the harness manufacturing method is ended.

The connecting step (step ST 4) may be performed after the wire harness WH is assembled to the vehicle, for example, or may not be originally assembled to the wire harness manufacturing method according to the present embodiment.

As shown in fig. 1 and 8, a wire harness WH manufactured by the wire harness manufacturing method described above includes: a first branch trunk line WA1 and a second branch trunk line WA2; a plurality of first branch lines WB1; a plurality of second branch lines WB2; and an inter-branch fixing strap T3. The first branch trunk line WA1 and the second branch trunk line WA2 branch from the trunk line WX and are bundled in the same direction X. The plurality of first branch lines WB1 branch from a plurality of first branch points P1 arranged at intervals on the first branch trunk WA1, and a connector C is provided at the end. The second branch lines WB2 branch from the second branch points P2 arranged at intervals on the second branch trunk WA2, and a connector C is provided at the end. The inter-branch fastening tape T3 is wound around the first branch trunk line WA1 and the second branch trunk line WA2 between the first branch position P1 and the second branch position P2 alternately arranged in the same direction X, and fastens the first branch trunk line AW1 and the second branch trunk line WA2 to each other.

The wire harness manufacturing method described above includes a branch wiring support step (step ST 1), a folding step (step ST 2), and a tape winding fixing step (step ST 3). Through this step, in the wire harness manufacturing method, in order to enable the support jig J for supporting the branch point P to be arranged at each branch point P, the first branch trunk line WA1 and the second branch trunk line WA2 of 2 systems are wired in different directions, and then each first branch point P1 and each second branch point P2 can be formed while being supported by the support jig J. In addition, in this wire harness manufacturing method, the first branch trunk line WA1 and the second branch trunk line WA2 can be folded so that the first branch positions P1 and the second branch positions P2 are alternately arranged in the same direction X, and then the first branch positions P1 and the second branch positions P2 can be bound and fixed to each other by the inter-branch fixing tape T3. The wire harness WH manufactured by this wire harness manufacturing method includes the first branch trunk line WA1 and the second branch trunk line WA2, the plurality of first branch lines WB1, the plurality of second branch lines WB2, and the inter-branch tape T3 as described above.

As a result, in this harness manufacturing method, regardless of the outer shape of the support jig J, it is possible to manufacture the harness WH in which the plurality of connectors C are arranged in the same direction X and the interval between the branch points P is relatively narrowed. That is, in this wire harness manufacturing method, the wire harness WH in which the interval of the branch portions P is relatively narrowed without being affected by the outer shape of the support jig J used can be manufactured. In other words, in the harness manufacturing method, when manufacturing the harness WH in which the interval between the connector C and the branch line WB is relatively narrowed, the interval of the branch point P can be restricted without depending on the size of the support jig J used. In addition, in this harness manufacturing method, when the connection device D is attached, the plurality of branch lines WB with the connectors C are less likely to be entangled with each other, and the harness WH in which the connectors C are easily arranged in a continuous manner can be manufactured. Therefore, in this harness manufacturing method, the workability of attaching the connection device D to the manufactured harness WH can be improved, and erroneous assembly and the like can be prevented.

As described above, the wire harness manufacturing method can appropriately manufacture the wire harness WH in which the plurality of branch portions P are formed.

The harness manufacturing method described above includes a connecting step (step ST 4) of connecting the connector D and the connector C after the tape winding fixing step (step ST 3). Through this step, in the harness manufacturing method, for example, the connection device D can be connected to the plurality of connectors C arranged at relatively narrow intervals along the same direction X as described above. As a result, in the harness manufacturing method, for example, the harness WH corresponding to the case where the respective connecting devices D are provided at intervals as narrow as possible can be appropriately manufactured in accordance with the layout of the connecting devices D.

The method for manufacturing a wire harness according to the embodiment of the present invention and the wire harness are not limited to the above-described embodiment, and various modifications can be made within the scope of the claims.

For example, fig. 9 is a flowchart illustrating a harness manufacturing method according to a modification. The harness manufacturing method according to the modification illustrated in fig. 9 includes a mark setting step (step ST 1A). The mark setting step (step ST 1A) is a step of winding the mark tape T4 around the first branch trunk line WA1 at a distance from the first branch point P1 before the folding step (step ST 2). Here, the description is given of the case where the flag setting step (step ST 1A) is performed after the branch wiring supporting step (step ST 1), but the flag setting step is not limited to this, and may be performed before the branch wiring supporting step (step ST 1).

The wire harness WH manufactured by the above-described wire harness manufacturing method may not be provided with any branch line WB or connector C depending on, for example, the presence or absence of optional equipment or specifications in a vehicle on which the wire harness WH is mounted. For example, the wire harness WH illustrated in fig. 10 and 11 does not have the third first branch point P1C (see fig. 8 and the like) and the first branch line WB1 branched from the first branch point P1C, depending on optional equipment and specifications.

In this case, before the folding step (step ST 2), the worker winds the marker tape T4 around the first branch trunk line WA1 as a marker setting step at a distance from the first branch point P1 (step ST 1A). In this case, typically, the worker winds the marker tape T4 around the first branch trunk line WA1 in advance at a position corresponding to the first branch point P1C which is unnecessary due to the relation of optional equipment and specifications. The marker tape T4 is preferably a tape having a color different from that of the branch part securing tapes T1 and T2 and the inter-branch securing tape T3, for example, in order to facilitate marking.

After the folding process (step ST 2), the worker winds the inter-branch fastening tape T3 over the first trunk line WA1 and the second trunk line WA2 at the position where the marker tape T4 is provided in the tape winding and fastening process (step ST 3), and fixes the first trunk line AW1 and the second trunk line WA2 to each other.

The harness manufacturing method according to the modification described above can appropriately cope with, for example, a difference in harness form depending on optional equipment, specifications, and the like, and can appropriately manufacture the harness WH having a required harness form while preventing an error.

The wire harness WH illustrated in fig. 11 illustrates a case where the inter-branch fixing tape T3 wider than the inter-branch fixing tape T3 of the wire harness WH illustrated in fig. 8 and the like is used. In this case, the wire harness WH may not provide the inter-branch fastening tape T3 between all of the first branch positions P1 and the second branch positions P2, as long as the inter-branch fastening tape T3 is provided at least at any 1 between the first branch positions P1 and the second branch positions P2. As an example, the wire harness WH illustrated in fig. 11 is wound with the inter-branch fastening tape T3 at 3 in total. That is, in the wire harness WH illustrated in fig. 11, the first inter-branch fastening tape T3A is wound between the first branch position P1A and the first second branch position P2A. The first inter-branch fixing band T3A binds and fixes the first branch trunk line WA1, the second branch trunk line WA2, and the first branch line WB1 branched from the first branch point P1A to each other. In addition, in the wire harness WH illustrated in fig. 11, the second inter-branch fastening tape T3B is wound around between the second first branch position P1B and the second branch position P2B. As described above, the third inter-branch fastening tape T3C is wound around the wire harness WH illustrated in fig. 11 at the position where the marker tape T4 is provided. The second inter-branch fastening tape T3B and the third inter-branch fastening tape T3C are wound around the first trunk line WA1 and the second trunk line WA2, respectively, and bind and fasten the first trunk line AW1 and the second trunk line WA2 to each other.

In this case, the harness production method can suitably produce the harness WH having the plurality of branch portions P formed therein, as described above.

The connector C described above is described as a connector constituting a connection mechanism for connecting a wiring material to a device, but the present invention is not limited thereto, and a connection mechanism for connecting a wiring material to a wiring material may be constituted. In this case, the connector C forms an electrical connection portion with a mating connector provided at the end of the other wiring member W by connector-fitting the connector C to the mating connector, and electrically connects the wiring member W to the other wiring member W.

The method for manufacturing a wire harness according to the present embodiment and the wire harness may be configured by appropriately combining the constituent elements of the above-described embodiments and modifications.

Claims (6)

1. A method of manufacturing a wire harness, comprising:

a branch wiring support step of wiring first branch trunk lines and second branch trunk lines branched from a trunk line in mutually different directions, and forming a plurality of first branch portions and a plurality of second branch portions while supporting the plurality of first branch portions and the plurality of second branch portions with jigs, respectively, the plurality of first branch portions being located on the first branch trunk lines at intervals and first branch lines with connectors branching from the respective first branch portions, and the plurality of second branch portions being located on the second branch trunk lines at intervals and second branch lines with connectors branching from the respective second branch portions;

a folding step of folding the first branch trunk line and the second branch trunk line to be bundled in the same direction after the branch wiring support step, and arranging the first branch parts and the second branch parts alternately in parallel in the same direction; and

and a tape winding and fixing step of winding a fixing tape between the first branch portion and the second branch portion adjacent to the first branch portion between the first branch portion and the second branch portion, and fixing the first branch trunk line and the second branch trunk line to each other.

2. The wire harness manufacturing method according to claim 1,

the wire harness manufacturing method includes: and a connecting step of connecting a connecting device to the connector after the tape winding and fixing step.

3. The wire harness manufacturing method according to claim 1 or 2,

the wire harness manufacturing method includes: a mark setting step of winding a mark tape on the first branch line at a distance from the first branch portion before the folding step,

in the tape winding and fixing step, the fixing tape is wound over the first branch trunk line and the second branch trunk line at a position where the marker tape is provided, and the first branch trunk line and the second branch trunk line are fixed to each other.

4. A wire harness is characterized by comprising:

a first branch trunk line and a second branch trunk line that branch from a trunk line and are bundled in the same direction;

a plurality of first branch lines branching from a plurality of first branch locations located at intervals on the first branch trunk line, and provided with a connector at an end;

a plurality of second branch lines branching from a plurality of second branch portions located at intervals on the second branch trunk line, and provided with a connector at an end; and

and a band wound around the first branch trunk line and the second branch trunk line between the first branch portions and the second branch portions alternately arranged in the same direction, the band fixing the first branch trunk line and the second branch trunk line to each other.

5. The wire harness of claim 4,

the connector is connected with a connecting device.

6. The wire harness according to claim 4 or 5,

a marker band is provided on the first branch trunk line at a distance from the first branch portion,

the fixing band is wound around the first branch trunk line and the second branch trunk line at a position where the marker band is provided, and the first branch trunk line and the second branch trunk line are fixed to each other.

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