WO2013190725A1

WO2013190725A1 - Wire harness and method for fabricating same

Info

Publication number: WO2013190725A1
Application number: PCT/JP2012/080916
Authority: WO
Inventors: 仁志洲嵜; 園田　哲也; 剛司水平; 佐藤　毅; 勇濱本
Original assignee: 住友電装株式会社
Priority date: 2012-06-21
Filing date: 2012-11-29
Publication date: 2013-12-27
Also published as: JP2014002982A

Abstract

An objective of the present invention is to allow protecting a junction part portion of a wire harness with a non-woven member of as simple a shape as possible and with as simple a winding operation as possible, while maintaining the shape of the junction. A wire harness comprises: a wire harness main body, further comprising an initial trunk wire portion which splits from an initial junction, and a plurality of initial branch wire portions; and a junction part protection part. The junction part protection part further comprises: a plurality of branch wire non-woven members which are respectively wound around each of the plurality of initial branch wire parts; and a trunk wire non-woven member which is wound around the initial trunk wire portion so as to exceed the initial junction and cover a portion of the plurality of branch wire non-woven members on the initial junction side. The plurality of branch wire non-woven members and the trunk wire non-woven member are hot pressed to maintain the initial trunk wire portion and the plurality of initial branch wire portions in a given junction shape.

Description

Wire harness and manufacturing method thereof

This invention relates to a technique for protecting a branch portion of a wire harness while maintaining the branch shape.

Conventionally, there is a technique disclosed in Patent Document 1 as a technique for protecting a branch portion of a wire harness with a non-woven member.

Patent Document 1 discloses a configuration in which a non-woven member is covered with a shape along a branch shape with respect to a branch portion, a configuration in which a sheet-like non-woven member having a cut is wound around the branch portion, and a strip-shaped non-woven portion The structure which winds a material around a branch part is disclosed.

JP 2012-397882 A

However, the former technique disclosed in Patent Document 1 requires a sheet-like non-woven member that has been subjected to special processing such as cutting. Moreover, in the latter technique disclosed in Patent Document 1, it is necessary to wind the strip-shaped non-woven member many times around the branch portion, and the winding work is troublesome.

Then, this invention aims at enabling it to protect the branch part part of a wire harness with the non-woven member of a simple shape as much as possible, and maintaining the branch shape by the winding operation as simple as possible. To do.

In order to solve the above-described problem, a wire harness according to a first aspect includes a wire harness main body including an initial trunk line portion and a plurality of initial branch line portions, in which a plurality of electric wires are bundled and branch from an initial branch point, and the plurality A plurality of non-woven members for branch lines wound around each of the initial branch line portions, and a portion on the initial branch point side of the plurality of non-woven members for branch lines beyond the initial branch point. A non-woven member for a main line wound around the initial main line part so as to cover the plurality of the initial main line part and the plurality of initial branch line parts so as to maintain a predetermined branch shape. The branch line non-woven member and the trunk line non-woven member are provided with a branch portion protection unit in which the hot press is performed.

A 2nd aspect is a wire harness which concerns on a 1st aspect, Comprising: The said nonwoven member for trunk lines and these non-woven members for a plurality of said branch lines are the said initial trunk line part and the said several said initial branch line part Is hot pressed so as to maintain a constant branch shape branched at the initial branch point.

The 3rd mode is a wire harness concerning the 2nd mode, and the non-woven members for main lines are joined between the a plurality of initial branch parts.

A 4th aspect is a wire harness which concerns on a 1st aspect, Comprising: The part which covers the said some non-woven member for branch lines among the said non-woven members for trunk lines is the said some initial branch line part. Among them, at least one of the plurality of the non-woven members for branch lines is at least one of the plurality of the initial branch line portions. Is hot-pressed so as to maintain a bent shape in the middle of the non-woven member for main line.

A fifth aspect is a wire harness according to any one of the first to fourth aspects, wherein a part of at least one of the non-woven member for trunk line and the plurality of the initial branch line parts is another It is more flexible than the part.

A method for manufacturing a wire harness according to a sixth aspect includes (a) a step of preparing a wire harness main body including an initial trunk portion and a plurality of initial branch portions that are bundled and branch from an initial branch point. , (B) a step of winding a plurality of branch line nonwoven members around the plurality of initial branch line parts, and (c) of the plurality of branch line nonwoven members beyond the initial branch point. A step of winding a non-woven member for trunks around the initial trunk portion so as to cover the portion on the side of the initial branch point; and (d) winding the plurality of non-woven members for branch wires around the initial branch portion. Hot-pressing the plurality of branch line non-woven members so as to maintain the state, and (e) maintaining the initial trunk line part and the plurality of initial branch line parts in a constant branch shape. In addition, a process for hot pressing the non-woven member for the trunk line Provided with a door.

A 7th aspect is a manufacturing method of the wire harness which concerns on a 6th aspect, Comprising: In the said process (e), the said initial trunk line part and the said several initial branch line part were branched at the said initial branch point. The trunk non-woven member is hot pressed so as to maintain a constant branch shape.

An eighth aspect is a method of manufacturing a wire harness according to the sixth aspect, wherein, in the step (d), at least one of the plurality of non-woven members for branch lines is replaced with the plurality of the plurality of the plurality of the non-woven members. At least one of the initial branch portions is hot-pressed so as to be bent in the middle portion extending from the trunk non-woven member, and in the step (e), Of these, the portion covering the plurality of branch line nonwoven members is hot-pressed so as to maintain the part on the initial branch point side among the plurality of initial branch line parts in a parallel state.

According to the first aspect, a branch line non-woven member is wound around each of the plurality of initial branch line portions, and the initial branch point side of the plurality of branch line non-woven members is passed over the initial branch point. Since the non-woven member for the trunk line is wound around the initial main line portion so as to cover the portion of the non-woven member, the non-woven member for the branch line and the non-woven member for the main line are used in a simple shape having no cuts or the like. be able to. Moreover, what is necessary is just to simply wind the nonwoven fabric member for trunk lines and the nonwoven member for branch lines of this simple shape with respect to each of the initial trunk line part and the initial branch line part. Then, a plurality of branch line non-woven members and main line non-woven members are hot-pressed so as to form a branch portion protection portion so that the initial main line portion and the plurality of initial branch line portions are maintained in a constant branch shape. For example, the branch portion can be protected while maintaining the shape of the branch portion in the final form.

According to the second aspect, when the trunk non-woven member and the branch non-woven member are hot-pressed in a state where a plurality of initial branch portions are expanded, the initial trunk portion and the plurality of initial branch portions are Since it is possible to maintain a constant branch shape branched at the initial branch point, the branch protection unit can be easily processed.

According to the third aspect, since the non-woven members for trunk lines are joined between the plurality of initial branch portions, the branch shapes of the plurality of initial branch portions can be more reliably maintained.

According to the fourth aspect, at least one of the plurality of branch line non-woven members can be easily maintained in a state of being greatly bent from the other.

According to the fifth aspect, the wire harness main body can be easily bent while being protected at the flexible portion of the trunk non-woven member and the plurality of initial branch portions.

According to the sixth aspect, a plurality of branch line non-woven members are wound around a plurality of initial branch line portions, and the initial branch point side of the plurality of branch line non-woven members beyond the initial branch point Since the main line non-woven member is wound around the initial main line part so as to cover the part, the non-branch non-line member and the main non-line member can have a simple shape with no cuts or the like. . Moreover, what is necessary is just to simply wind the nonwoven fabric member for trunk lines and the nonwoven member for branch lines of this simple shape with respect to each of the initial trunk line part and the initial branch line part. And if the non-woven member for the main line is hot pressed so as to maintain the initial main line part and the plurality of the initial branch line parts in a constant branch shape, the branch part while maintaining the shape of the branch part in its final form Can be protected.

According to the seventh aspect, if the non-woven member for trunk line is hot pressed in a state where a plurality of initial branch line parts are expanded, the initial trunk line part and the plurality of initial branch line parts are branched at the initial branch point. Since it can be maintained in a certain branch shape, the branch protection unit can be easily processed.

According to the eighth aspect, at least one of the plurality of branch line non-woven members can be easily maintained in a state of being greatly bent from the other.

It is a schematic plan view which shows the wire harness which concerns on embodiment. FIG. 2 is a schematic sectional view taken along line II-II in FIG. 1. It is a figure which shows the modification which joined the nonwoven member for trunk lines between several initial branch line parts. It is a figure which shows the modification which processed the initial stage branch part partly flexibly. It is explanatory drawing which shows the manufacturing process of a wire harness. It is explanatory drawing which shows the manufacturing process of a wire harness. It is explanatory drawing which shows the manufacturing process of a wire harness. It is explanatory drawing which shows the manufacturing process of a wire harness. It is a schematic plan view which shows the wire harness which concerns on a 1st modification. It is a schematic plan view which shows the wire harness which concerns on a 2nd modification.

{Embodiment}
Hereinafter, the wire harness which concerns on embodiment is demonstrated. FIG. 1 is a schematic plan view showing the wire harness 10, and FIG. 2 is a schematic cross-sectional view taken along the line II-II of FIG.

The wire harness 10 includes a wire harness main body 12 and a branch protection unit 20.

The wire harness body 12 has a configuration in which a plurality of electric wires are bundled. More specifically, the wire harness main body 12 has a configuration in which a plurality of electric wires are bundled while branching according to the wiring form of a place to be arranged such as a vehicle. The wire harness body 12 may include an optical fiber cable or the like. The wire harness body 12 is used as a wiring for electrically connecting various electric devices mounted on the vehicle or the like in a state where the wire harness body 12 is disposed at a location to be disposed of the vehicle or the like.

The wire harness body 12 includes an initial branch point 13, an initial trunk portion 14 that branches from the initial branch point 13, and a plurality of initial branch portions 16 in an initial form that is not protected by the branch protection unit 20.

That is, at least one initial branch point 13 of the wire harness body 12 is included, and three or more wire bundles branch from the initial branch point. Any one of the three or more wire bundles is the initial trunk portion 14, and the remaining plurality of wire bundles are the initial branch portion 16. Of the three or more wire bundles, the one with the largest diameter or the one with the largest number of wires is preferably the initial trunk portion 14 and the remaining is the initial branch portion 16, but this is not essential. Here, an example in which there are two initial branch portions 16 will be described.

Note that the initial branch point 13, the initial trunk line portion 14, and the initial branch line portion 16 mean functional portions in a state before the wire harness body 12 is protected by the branch protection unit 20. Therefore, the branch point in the state where the wire harness body 12 is protected by the branch protection unit 20 may coincide with the initial branch point 13 (see the present embodiment), or is different from the initial branch point 13. (See first and second modifications described later).

Note that the initial form of the wire harness body 12 may be maintained by being bound by an adhesive tape or the like. Further, the wire harness body 12 may include a plurality of the initial branch points 13 and the like. In this case, all of the plurality of initial branch points 13 or the like may be protected by the branch protection unit 20, or a part thereof may be protected by the branch protection unit 20.

The branch protection unit 20 includes a plurality of branch line non-woven members 26 wound around each of the plurality of initial branch line parts 16 and a main line non-woven member 24 wound around the initial main line part 14. .

The non-woven member 26 for branch wires and the non-woven member 24 for main wires are made of a non-woven material that is hardened by the heating and pressurizing steps and can be joined to each other.

As such a nonwoven material, a material containing intertwined basic fibers and an adhesive resin (also called a binder) can be used. The adhesive resin is a resin having a melting point lower than the melting point of the basic fiber. Then, by heating the nonwoven material to a processing temperature lower than the melting point of the basic fiber and higher than the melting point of the adhesive resin, the adhesive resin melts and soaks between the basic fibers. Thereafter, when the non-woven material reaches a temperature lower than the melting point of the adhesive resin, the adhesive resin is solidified in a state where the basic fibers are bonded to each other. As a result, the nonwoven material becomes harder than the state before heating and is maintained in the molded shape during heating. Such nonwoven materials are also referred to as nonwovens.

The adhesive resin may be granular or fibrous. An adhesive resin layer may be formed on the outer periphery of the core fiber to constitute a binder fiber, which may be entangled with the basic fiber. As the core fiber in this case, the same material as the basic fiber can be used.

As the basic fiber, it is only necessary to maintain the fiber state at the melting point of the adhesive resin, and various fibers can be used in addition to the resin fiber. As the adhesive resin, thermoplastic resin fibers having a melting point lower than that of the basic fiber can be used. Examples of the combination of the basic fiber and the adhesive resin include an example in which the basic fiber is a resin fiber of PET (polyethylene terephthalate) and the adhesive resin is a copolymer resin of PET and PEI (polyethylene isophthalate). In this case, the melting point of the basic fiber is larger than the melting point of the adhesive resin. Therefore, when the non-woven material is heated to a temperature between the melting points, the adhesive resin melts and remains between the basic fibers that keep the fiber shape without melting. Soak. When the nonwoven material is at a temperature lower than the melting point of the adhesive resin, the adhesive resin is solidified in a state where the basic fibers are bonded to each other, and the nonwoven material becomes hard and maintains the molded shape during heating. That is, the non-woven material is sandwiched between molds having a mold surface for molding, and pressure is applied to the mold in a heated state, so that the non-woven material has a predetermined shape corresponding to the mold surface. When it is molded and cooled, it maintains its mold shape. Further, in the mutual contact portion of the nonwoven member, the melted adhesive resin soaks into the counterpart portion and then solidifies. Thereby, the mutual contact parts of a nonwoven member are joined. The above processing method is called hot press. A more specific example of manufacturing the branch protection unit 20 will be described later.

The branch wire non-woven member 26 is formed in a sheet shape, more specifically, in a square sheet shape before being wound around the initial branch line portion 16. The trunk non-woven member 24 is also formed into a sheet shape, more specifically, a rectangular sheet shape, before being wound around the initial trunk portion 14. Since the non-woven member for branch line 26 and the non-woven member for main line 24 may have any shape that can be wound around the simple linear initial branch line part 16 or the initial main line part 14, a cut or the like is formed. Those that are not can be used.

The branch wire non-woven member 26 is wound around a portion of the initial branch portion 16 close to the initial branch point 13. The branch line non-woven member 26 is preferably wound around the initial branch line part 16 as close to the initial branch point 13 as possible. This is not essential, and there may be a gap between the branch line non-woven member 26 and the initial branch point 13. The branch line non-woven member 26 may be wound around a part of the initial branch line part 16 or may be wound around the entire initial branch line part 16. Of the plurality of branch line non-woven members 26 wound around each of the plurality of initial branch line portions 16, it is preferable that the positions of the end portions on the initial branch point 13 side are aligned, but this is not essential.

The non-woven member for main line 24 is close to the initial branch point 13 in the initial main line portion 14 so as to cover the initial branch point 13 side of the plurality of non-woven members 26 for branch lines beyond the initial branch point 13. It is wrapped around the part. The non-woven member for main line 24 may be wound around a part of the initial main line portion 14 or may be wound around the whole non-woven member 24 for main line.

When performing the winding operation of the branch non-woven member 26 and the trunk non-woven member 24, a double-sided tape or the like is attached to at least one of a portion serving as a start end and a portion serving as an end end of the winding operation. It is preferable to maintain the winding state. In addition, it is preferable that a double-sided tape or the like is adhered to the overlapping portion of the trunk non-woven member 24 and the branch non-woven member 26 to maintain the overlapping state. However, it is not essential to use these double-sided tapes.

The plurality of branch line non-woven members 26 and main line non-woven members 24 are hot-pressed so as to maintain the initial branch line part 16 and the initial main line part 14 in a constant branch shape.

Here, the non-woven member 24 for the main line and the non-woven member 26 for the branch line are hot so as to maintain the initial main line part 14 and the initial branch line part 16 in a constant branch shape branched at the initial branch point 13. It has been pressed.

That is, the trunk non-woven member 24 covers a part of the branch non-woven member 26 close to the initial branch point 13. And the part which covers between the said several initial branch line parts 16 among the nonwoven members 24 for trunk lines is extended, and the said several initial branch line parts 16 are expanded so that a predetermined angle may be made. At this time, it is necessary not to tear the trunk non-woven member 24 between the plurality of initial branch portions 16. For this reason, it is preferable to set the angle of the initial branch line portion 16 as small as possible, for example, an acute angle.

When the main line nonwoven member 24 and the branch line non-woven member 26 are hot-pressed in the above state, the main line non-woven member 24 and the branch line non-woven member 26 are respectively connected to the initial main line part 14 or the initial branch line part 16. It is processed into a shape that covers. A portion of the trunk non-woven member 24 that covers the branch non-woven member 26 is joined to the branch non-woven member 26 and covers the branch non-woven member 26 and the initial branch portion. 16 is processed into a circumferential curved surface shape around the axis along the extending direction (see FIG. 2). Thereby, the some initial branch line part 16 is maintained in the state which makes a fixed angle with respect to the nonwoven member 24 for trunk lines.

In the above example, the portion of the trunk non-woven member 24 that sandwiches the space between the plurality of initial branch portions 16 is not joined. However, as shown in FIG. 3, the portions of the trunk non-woven member 24 that sandwich the space between the plurality of initial branch line portions 16 may be bonded via a bonding portion 24P. As a result, the angle formed by the plurality of initial branch portions 16 can be more reliably maintained constant.

In the above example, the non-woven member for branch line 26 and the non-woven member for main line 24 are processed into a shape extending linearly, but may be processed into a shape that bends in the middle.

In the above example, the non-woven member for branch line 26 and the non-woven member for main line 24 are hot-pressed and hardened over the entire longitudinal direction, but as shown in FIG. 26 and at least one part of the trunk non-woven member 24 may be processed to be more flexible than the other parts. FIG. 4 shows an example in which the longitudinal intermediate portion of one branch line nonwoven member 26 is processed into a portion 26P that is more flexible than the other portions. Processing a part of the non-woven member for branch line 26 and the non-woven member for main line 24 to be flexible is to make the temperature or pressure applied to the part smaller than other parts when hot pressing. Etc.

As a result, the main wire non-woven member 24 and the plurality of branch non-woven members 26 are flexibly processed as described above, and the wire harness main body 12 is easily bent while being routed. It can be carried out.

An example of a method for manufacturing the wire harness 10 will be described.

First, as shown in FIG. 5, a wire harness body 12 is prepared by bundling a plurality of electric wires in a predetermined wiring form.

Next, as shown in FIG. 6, a plurality of branch line non-woven members 26 are wound around the plurality of initial branch line portions 16, respectively. At this time, since the branch line non-woven member 26 may be wound around the linear initial branch line portion 16, the branch line non-woven member 26 may be a simple rectangular sheet having no breaks. In addition, the winding work can be easily performed.

Then, as shown in FIG. 7, the main trunk line non-woven member is placed on the initial main trunk portion 14 so as to cover the initial branch point 13 side of the plurality of branch non-woven members 26 beyond the initial branch line portion 16. 24 can be wound. At this time, the non-woven member 24 for the trunk line only needs to cover the straight initial trunk portion 14 and the portion close to the initial branch point 13 among the plurality of non-woven members 26 for branch lines. As 26, a simple rectangular sheet having no cuts or the like can be used. In addition, the rectangular sheet-shaped non-woven member 24 for the main line is close to the initial branch point 13 among the straight-line initial main line portion 14 and the plurality of branch-line non-woven members 26 while aligning the positions of both sides thereof. Since it suffices to simply wind around the part, the winding operation can be easily performed.

Next, as shown in FIG. 8, the plurality of branch line non-woven members 26 and the main line non-woven members 24 are arranged so that the initial main line portion 14 and the plurality of initial branch line portions 16 are maintained in a certain branch shape. Hot press. At this time, as described above, the main trunk nonwoven member 24 is hot-pressed so that the initial trunk portion 14 and the plurality of initial branch portions 16 are maintained in a certain branch shape branched at the initial branch point 13. To do. Thereby, the branch part protection part 20 is formed.

In addition, although the hot press with respect to the non-woven member 26 for several branch lines and the hot press with respect to the non-woven member 24 for trunk lines are demonstrated simultaneously here, these may be performed separately. For example, after the step of hot pressing the plurality of branch line non-woven members 26 so as to keep the plurality of branch line non-woven members 26 wound around the initial branch line part 16, the initial main line part The step of hot pressing the trunk non-woven member 24 may be performed so as to maintain the 14 and the plurality of initial branch portions 16 in a certain branch shape.

Here, an example of the mold 40 for forming the branch protection unit 20 will be described. The mold 40 has a lower mold 50 and an upper mold 60.

The lower mold 50 is a long member formed of a metal having excellent thermal conductivity, and the lower mold surface 52 is formed on one main surface (upper surface) thereof. In general, the lower mold surface 52 has a plurality of concave groove shapes for molding a plurality of branch line nonwoven members 26 with respect to a concave groove portion for molding the trunk nonwoven fabric member 24. The part is formed in a Y-shaped continuous shape.

The upper mold 60 is a long member made of a metal having excellent thermal conductivity, and an upper mold surface 62 is formed on one main surface (lower surface) thereof. That is, a protrusion 61 that protrudes in a Y shape in the extending direction similar to that of the lower mold surface 52 is formed at the lower portion of the upper mold 60, and the shallow semicircular groove-shaped upper mold surface 62 is formed in the protrusion 61. Is formed.

The lower mold 50 and the upper mold 60 are provided with a heater 70 as a heating device. The heater 70 heats the lower mold surface 52 and the upper metal surface 62 to a temperature lower than the melting point of the basic fiber and higher than the melting point of the adhesive resin. The heater 70 may be embedded in the lower mold 50 and the upper mold 60, or may be attached to the outer surface of the lower mold 50 and the upper mold 60 in a manner that allows heat transfer. .

The upper die 60 is disposed and supported so as to be movable toward and away from the lower die 50. The upper die 60 faces the lower die surface 52 in a state where the upper die 60 is closest to the lower die 50. The surface 62 is disposed, and a Y-shaped space is formed between the lower mold surface 52 and the upper mold surface 62. Then, by heating and pressurizing the trunk non-woven member 24 and the branch non-woven member 26 between the lower mold surface 52 and the upper mold surface 62, the main non-woven member 24 and the branch non-wire The woven member 26 is formed into a shape corresponding to the shape of the lower mold surface 52 and the upper mold surface 62.

A method for forming the branch protection unit 20 using the mold 40 will be described.

First, the trunk non-woven member 24 covering the initial trunk portion 14 and the branch non-woven member 26 covering each initial branch portion 16 are disposed in the lower mold surface 52. Thereafter, in a state where the lower mold 50 and the upper mold 60 are heated, the lower mold 50 and the upper mold 60 are moved close to each other, and pressure is applied between them. Then, between the lower mold surface 52 and the upper mold surface 62, the trunk non-woven member 24 and the branch non-woven members 26 are heated and pressurized. Thereby, the non-woven member 24 for trunk lines and the non-woven member 26 for branch lines are shape | molded in the shape which covered the initial trunk line part 14 or the initial branch line part 16, respectively. Further, a portion of the trunk non-woven member 24 that covers the branch non-woven member 26 is joined to the branch non-woven member 26 and molded into a curved shape covering the branch non-woven member 26. Is done. Thus, the trunk non-woven member 24 and each branch non-woven member 26 cover the initial branch point 13, at least part of the initial trunk part 14 and at least part of the plurality of initial branch parts 16, and The initial trunk portion 14 and the plurality of initial branch portions 16 are branched and extended from the branch point 13 so as to be maintained in a shape that extends.

Thereafter, when the lower die 50 and the upper die 60 are moved away from each other, and the portion of the branching portion protection portion 20 molded from the mold is taken out between them, the wire harness 10 is obtained. The cooling after heating and pressurization may be performed in a state existing between the lower mold 50 and the upper mold 60, or may be performed in a state of being taken out between them.

According to the wire harness 10 configured as described above, the branch line non-woven member 26 is wound around each of the plurality of initial branch line parts 16, and the plurality of branch line non-woven parts are passed over the initial branch line part 16. Since the trunk non-woven member 24 is wound around the initial trunk portion 14 so as to cover the portion of the material 26 on the side of the initial branch point 13, the branch non-woven member 26 and the trunk non-woven member 24 are used. Can have a simple shape with no cuts or the like. Moreover, what is necessary is just to wind the non-woven member 26 for branch lines and the non-woven member 24 for trunk lines of such a simple shape to the initial trunk part 14 and the initial branch part 16, respectively. Then, the plurality of branch line non-woven members 26 and the main line non-woven member 24 are hot-pressed so as to maintain the initial main line portion 14 and the plurality of initial branch line portions 16 in a certain branch shape, and the branch portion protection portion 20 may be formed. For this reason, the branch portion can be protected while maintaining the shape of the branch portion in the final form.

In particular, the trunk non-woven member 24 and the plurality of branch non-woven members 26 are configured to maintain the initial trunk portion 14 and the plurality of initial branch portions 16 in a certain branch shape branched at the initial branch point 13. Therefore, if the trunk non-woven member 24 is hot-pressed in a state where the plurality of initial branch portions 16 are expanded, the initial trunk portion 14 and the plurality of initial branch portions 16 are maintained in the branch shape. The branch part protection part 20 can be easily processed.

{Modifications}
In the said embodiment, although the initial branching point 13 of the wire harness main body 12 demonstrated in the example corresponded with the branching point in the final form of the wire harness 10, it is not necessarily required.

The wire harness 110 according to the first modification shown in FIG. 9 includes a trunk non-woven member 124 corresponding to the trunk non-woven member 24, and a branch non-woven member 126 corresponding to the branch non-woven member 26. Is provided.

The trunk non-woven member 124 covers the portion on the initial branching point 13 side of the plurality of branch non-woven members 126 as in the above embodiment. The portion of the trunk non-woven member 124 that covers the plurality of branch non-woven members 126 is hot so that the portion of the plurality of branch non-woven members 126 on the initial branch point 13 side is maintained in a parallel state. It has been pressed.

In addition, at least one of the plurality of branch non-woven members 126 is in a state in which at least one of the plurality of initial branch portions 16 is bent at an intermediate portion extending from the main non-woven member 124. Has been hot pressed to maintain.

Here, the two branch non-woven members 126 are hot so that the two initial branch portions 16 are opened outward in a V shape at the base portion extending from the main non-woven member 124. It has been pressed.

For example, in the hot pressing operation process in the embodiment, the wire harness 110 may be configured such that a portion of the trunk non-woven member 124 that covers the plurality of branch non-woven members 126 is an initial portion of the plurality of initial branch portions 16. Hot press so that the branch point 13 side portion is maintained in a parallel state, and at least one of the plurality of branch line non-woven members 26 is hot pressed to be bent in the middle as described above. And can be manufactured. In addition, the hot press with respect to the non-woven member 126 for branch lines may be performed before the hot press with respect to the non-woven member 124 for trunk lines. In this case, what is necessary is just to hot-press so that the said predetermined location may be processed in the state bent when the non-woven member 126 for branch lines is hot-pressed.

In the final form of the wire harness 110, the branch point 113 is provided at the outer end position of the main nonwoven fabric member 124 from the initial branch point 13. Therefore, the wire harness 110 has a form in which branch lines extend in a plurality of directions around the branch point 113.

The wire harness 210 according to the second modification shown in FIG. 10 includes a trunk non-woven member 224 corresponding to the trunk non-woven member 24, and a branch non-woven member 226 corresponding to the branch non-woven member 26. Is provided.

The trunk non-woven member 224 covers a portion of the plurality of branch non-woven members 226 on the initial branch point 13 side, as in the above embodiment. The portion of the trunk non-woven member 224 that covers the plurality of branch non-woven members 226 is hot so that the portion of the plurality of branch non-woven members 226 on the initial branch point 13 side is maintained in a parallel state. It has been pressed.

In addition, at least one of the plurality of branch non-woven members 226 is in a state where at least one of the plurality of initial branch line portions 16 is bent at an intermediate portion extending from the main non-woven member 224. Has been hot pressed to maintain.

Here, one non-woven member 226 for a branch line is hot-pressed so that one initial branch line portion 16 is bent in an L shape at a base portion extending from the non-woven member 224 for a main line. Yes.

The hot pressing of the branch non-woven member 226 and the main non-woven member 224 can be performed by the same method as described in the first modification.

In the final form of the wire harness 210, the branch point 213 is provided at a position away from the initial branch point 13 on the outer side of the end of the trunk non-woven member 224. Accordingly, the wire harness 210 is branched in a T shape around the branch point 213.

In the first and second modifications, at least one branch line non-woven member 126 (or 226) is bent at a portion extending from the main line non-woven member 124 (or 224). For this reason, it can be set as the state opened at a comparatively large angle easily. That is, the first and second modified examples are suitable for processing at least one of the plurality of initial branch line portions 16 into a bent state so as to be greatly expanded from the other (an angle close to a right angle or an obtuse angle). It can be said that it is a configuration.

Of course, also in these modified examples, at least a part of the trunk

non-woven members

124 and 224 and the plurality of branch

non-woven members

126 and 226 may be processed to be more flexible than the other parts.

Although the present invention has been described in detail as described above, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

10, 110, 210 Wire harness 12 Wire harness body 13 Initial branch point 14 Initial trunk line part 16 Initial branch line part 20 Branch

part protection part

24, 124, 224 Non-woven member for trunk line

24P Joint part

26, 126, 226 For branch line Non-woven member

26P Flexible portion

113, 213 Branch point

Claims

A wire harness body including an initial trunk portion and a plurality of initial branch portions that are bundled and branch from an initial branch point;
A plurality of branch line non-woven members wound around each of the plurality of initial branch line parts, and the initial branch point side of the plurality of branch line non-woven members across the initial branch point A non-woven member for a main line wound around the initial main line part so as to cover the part, and the plurality of the initial main line part and the plurality of initial branch line parts are maintained in a certain branch shape. The non-woven member for branch wires and the non-woven member for main wires are hot pressed,
Wire harness comprising
The wire harness according to claim 1,
The non-woven member for trunk lines and the plurality of non-woven members for branch lines are maintained in a certain branch shape in which the initial trunk line portion and the plurality of initial branch line portions are branched at the initial branch point. Wire harness that is hot pressed.
The wire harness according to claim 2,
The wire harness in which the non-woven members for trunk lines are joined between the plurality of initial branch portions.
The wire harness according to claim 1,
Hot pressing is performed so that a portion of the trunk non-woven member covering the plurality of branch non-woven members maintains the portion on the initial branch point side of the plurality of initial branch portions in a parallel state. And
At least one of the plurality of non-woven members for branch lines is maintained in a shape in which at least one of the plurality of initial branch line portions is bent at an intermediate portion extending from the non-woven member for trunk lines. The wire harness that is hot pressed to do.
A wire harness according to any one of claims 1 to 4,
The wire harness in which at least one part of the non-woven member for trunk lines and the plurality of the initial branch portions is more flexible than the other portions.
(A) a step of preparing a wire harness body including a plurality of initial branch lines and a plurality of initial branch lines that are bundled and branched from an initial branch point;
(B) winding a plurality of branch line non-woven members around the plurality of initial branch line parts;
(C) a step of winding the non-woven member for main line around the initial main line part so as to cover the initial branch point side of the plurality of non-woven members for branch line beyond the initial branch point;
(D) hot pressing the plurality of branch line nonwoven members so as to maintain the plurality of branch line nonwoven members wound around the initial branch line part;
(E) hot-pressing the non-woven member for main line so as to maintain the initial main line part and the plurality of initial branch line parts in a constant branch shape;
A method of manufacturing a wire harness comprising:
It is a manufacturing method of the wire harness of Claim 6, Comprising:
In the step (e), the main trunk nonwoven member is hot pressed so as to maintain the initial trunk portion and the plurality of the initial branch portions in a certain branch shape branched at the initial branch point. Manufacturing method of wire harness.
It is a manufacturing method of the wire harness of Claim 6, Comprising:
In the step (d), at least one of the plurality of non-woven members for branch lines and at least one of the plurality of initial branch portions are extended from the non-woven members for main lines. Hot press to keep the shape bent in the middle,
In the step (e), a portion of the trunk non-woven member that covers the plurality of branch non-woven members, and a portion of the plurality of initial branch portions on the side of the initial branch point are arranged in parallel. A method of manufacturing a wire harness that is hot-pressed so as to maintain the temperature.