WO2017199699A1 - Wire harness - Google Patents

Wire harness Download PDF

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Publication number
WO2017199699A1
WO2017199699A1 PCT/JP2017/016215 JP2017016215W WO2017199699A1 WO 2017199699 A1 WO2017199699 A1 WO 2017199699A1 JP 2017016215 W JP2017016215 W JP 2017016215W WO 2017199699 A1 WO2017199699 A1 WO 2017199699A1
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WO
WIPO (PCT)
Prior art keywords
wire harness
molded product
insulated wires
insulated
injection
Prior art date
Application number
PCT/JP2017/016215
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French (fr)
Japanese (ja)
Inventor
亮 浜崎
藤井　正司
大樹 舩岡
Original Assignee
東洋紡株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東洋紡株式会社 filed Critical 東洋紡株式会社
Priority to JP2018518182A priority Critical patent/JP6919649B2/en
Publication of WO2017199699A1 publication Critical patent/WO2017199699A1/en
Priority to PH12018501720A priority patent/PH12018501720A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations
    • H02G15/04—Cable-end sealings

Definitions

  • the present invention relates to a wire harness in which a plurality of insulated wires are sealed with an injection molded product.
  • a wire harness that facilitates accommodating a plurality of insulated wires partially in a lump is installed.
  • the insulating layer of the insulated wire may be partially peeled to expose the conductor, and the exposed portion may be joined by welding, pressure bonding, or the like.
  • the exposed portion may be joined by welding, pressure bonding, or the like.
  • a technique for sealing an exposed portion with a resin is known.
  • Patent Document 1 discloses a wire harness in which an exposed portion of an insulated wire is sealed with a photocurable resin.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a wire harness capable of meeting various needs of users.
  • the inventors of the present invention have made extensive studies to solve the above-mentioned problems. As a result, it is a wire harness in which a plurality of insulated wires whose surfaces are covered with an insulating layer are sealed, and the insulated wires are not covered with the insulating layer and the conductor is exposed. It has been found that a wire harness that can be easily accommodated in various places can be obtained by having at least an exposed portion, and at least the exposed portion being sealed with an injection molded product.
  • the configuration of the present invention is as follows.
  • Item 1. A wire harness in which a plurality of insulated wires whose surfaces are covered with an insulating layer are sealed, The insulated wire has an exposed portion where the insulating layer is not covered and the conductor is exposed, At least the exposed portion is sealed with an injection molded product.
  • Item 2. Item 2. The wire harness according to Item 1, wherein the exposed portions are joined to each other.
  • Item 3. The plurality of insulated wires exist on one end in the axial direction of the injection molded product and on the side opposite to the exposed portion, Item 3.
  • the wire according to Item 1 or 2 wherein the exposed portion is present on the other end side from a position (hereinafter, referred to as 1 / position) that is one third of the axial length of the injection-molded product from the one end portion. Harness.
  • Item 4. The outermost tangent lines of the plurality of insulated wires in the first cross section perpendicular to the axial direction at the one end are: Item 4.
  • the wire harness according to Item 3 wherein the wire harness is shorter than an outermost tangent of the plurality of insulated wires in a second cross section perpendicular to the axial direction at the 1/3 position.
  • Item 5. The wire harness according to Item 4, wherein the shape of the insulated wire in the first section is flat.
  • Item 6. Item 6.
  • some insulated wires are Item 7.
  • a wire harness that can be easily accommodated in various places can be obtained by the above configuration.
  • FIG.1 (a) is a side view of the injection molded product of the wire harness and its peripheral part in 1st Embodiment.
  • FIG.1 (b) is the figure which saw through the inside of the injection molded product of Fig.1 (a).
  • FIG. 2A is an XX cross-sectional view of the injection-molded product shown in FIG.
  • FIG. 2B is a YY sectional view of the injection-molded product shown in FIG.
  • FIG.3 (b) is the figure which saw through the inside of the injection molded product of Fig.3 (a).
  • FIG. 4 is a schematic explanatory view of injection molding.
  • Fig.5 (a) is sectional drawing inside the insert piece used for injection molding.
  • FIG.5 (b) is sectional drawing inside a metal mold
  • the wire harness of the present invention is a wire harness in which a plurality of insulated wires whose surfaces are covered with an insulating layer are sealed, and the insulated wires are not covered with the insulating layer and the conductor Is exposed, and at least the exposed portion is sealed with an injection molded product.
  • Fig.1 (a) is a side view of the injection molded product of the wire harness and its peripheral part in 1st Embodiment. As shown in FIG. 1A, the plurality of insulated wires 1 are sealed with an injection molded product 4.
  • FIG. 1 (b) is a perspective view of the inside of the injection-molded product of FIG. 1 (a).
  • a dashed-two dotted line shows the part in which the injection molded product 4 exists.
  • the insulated wire 1 has a conductor 2 with a surface coated with an insulating layer 3, but the insulated wire 1 is not covered with the insulating layer 3 at the tip.
  • the exposed portion 5 is sealed with the injection molded product 4.
  • the exposed portions 5 are joined to each other.
  • the exposed portion 5 is sealed by the injection molded product 4, thereby making it easy to prevent water immersion and leakage. From the viewpoint of preventing flooding and leakage, it is preferable that the exposed portion 5 and the portion adjacent to the exposed portion 5 of the insulated wire 1 are also sealed with the injection molded product 4 as shown in FIG. .
  • the shape of the injection-molded product 4 is a cylindrical shape in the first embodiment. Since the injection-molded product 4 is obtained by injection-molding a resin, the shape thereof is various, and examples include shapes such as elliptic cylinders, cubes, rectangular parallelepipeds in addition to cylinders. Thus, since the shape of the injection molded product 4 is various, it can be accommodated in various places.
  • the material of the injection-molded product 4 is not particularly limited, but considering adhesiveness with the insulating layer 3 and the exposed portion 5, resins such as polyolefin, polyamide, and polyester are preferable. Of these, polyester resins are more preferred. Viroshot (registered trademark, manufactured by Toyobo Co., Ltd.) can be listed as a commercial product. Since the by-shot can be injected even at a low pressure, it is possible to easily suppress damage to the insulated wire 1 during injection molding. For this reason, a byro shot is more preferable. Examples of the byro shot include Viro Shot (registered trademark) GM-955 series, GM-960 series, and the like.
  • additives can be added as long as the properties of the injection-molded product 4 are not impaired.
  • fillers such as silica and talc; flame retardants such as antimony oxide, aluminum hydroxide and magnesium hydroxide; plasticizers such as phthalate ester and adipic acid ester; mold release agents such as polyethylene wax and silicone oil; Examples thereof include hydrolysis inhibitors such as carbodiimide.
  • the content of the additive is preferably about 0.1 parts by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the resin used as the material of the injection-molded product 4.
  • the content of the additive is more preferably 1 part by mass or more and 30 parts by mass or less, and further preferably 5 parts by mass or more and 20 parts by mass or less.
  • the exposed portions 5 are not necessarily bonded to each other, but the exposed portions 5 are easier to seal the exposed portions 5. Therefore, it is preferable that the exposed portions 5 are joined to each other.
  • the joining method may be a known method such as welding or pressure bonding.
  • the exposed portion 5 is not necessarily present at the tip of the insulated wire 1, but the exposed portion 5 is preferably present at the tip of the insulated wire 1 from the viewpoint of easy joining of the exposed portion 5.
  • the insulated wire 1 is a general insulated wire used for motorcycles and the like.
  • Examples of the material of the conductor 2 include copper, copper alloy, aluminum, silver, or those plated with gold or tin.
  • Examples of the material for the insulating layer 3 include resins such as polyvinyl chloride, polyethylene, and polypropylene.
  • one end A in the axial direction of the injection-molded product 4 is located on the opposite side of the exposed portion 5, and a plurality of insulated wires 1 are present at the one end A.
  • the other end of the injection molded product 4 from the one-third position (hereinafter referred to as the position C) that is one-third away from the axial length of the injection-molded product 4 (the length of the dashed arrow) from the one end A of the injection molded product 4
  • An exposed portion 5 exists on the B side.
  • one end A of the injection-molded product 4 is a portion where a plurality of insulated wires 1 are indented, a gap due to aging or the like is likely to occur.
  • the exposed portion 5 is too close to the one end A when the water is immersed from this gap, there is a possibility that the exposed portion 5 is connected to the inside of the insulated wire 1, but the exposed portion 5 is at a position away from the one end A.
  • the exposed part 5 exists in the axial direction at the other end B side rather than the position C.
  • the exposed portion 5 exists on the other end B side from a half position that is 1/2 the axial length of the injection-molded product 4 from the one end A.
  • the exposed portion 5 may be exposed to the outside when the other end B is damaged. Therefore, it is preferable that the exposed part 5 exists in the one end part A side rather than the position which is 1/20 distance from the other end part B of the axial direction length of the injection molded product 4.
  • the axial length of the injection-molded product 4 is not particularly limited, but is approximately 1 to 20 cm.
  • FIG. 2A is an XX cross-sectional view perpendicular to the axial direction at one end A of FIG.
  • FIG. 2B is a YY cross-sectional view perpendicular to the axial direction at position C in FIG.
  • the XX section may be simply referred to as a first section.
  • the YY section may be simply referred to as a second section.
  • the broken lines indicate the outermost tangent lines of the plurality of insulated wires 1 in each cross section.
  • the outermost tangent lines of the plurality of insulated wires 1 in FIG. 2 (a) are shorter than the outermost tangent lines of the plurality of insulated wires 1 in FIG. 2 (b).
  • This means that the insulated wire 1 is bundled more densely at the one end A of FIG.
  • the resin leakage means that the resin does not fit in a desired shape during injection molding, and the insulated wire 1 is connected and solidified as it is to deteriorate the appearance properties.
  • the outermost tangent in the present invention means the shortest tangent that circumscribes the plurality of insulated wires 1 so as to surround the plurality of insulated wires 1 in a cross section perpendicular to the axial direction of the injection molded product 4.
  • the insulated wire 1 at the one end A is tightly bundled, it becomes easy to apply the injection pressure required at the time of injection molding, so that the resin is easily filled, and as a result, the airtightness of the injection molded product 4 is improved. Get higher.
  • the insulated wires 1 are in contact with each other, but the insulated wires 1 that are not in contact may be included.
  • the outermost tangent of the plurality of insulated wires 1 in the first section is shorter than the outermost tangent of the plurality of insulated wires 1 in the second section. preferable.
  • the shape of the insulated wire 1 in the first cross section is preferably flat. Since the contact point of each insulated wire 1 is increased due to the flat shape, a plurality of insulated wires 1 are easily bundled at one end A.
  • the flatness of the insulated wire 1 is defined by the long diameter of the insulated wire 1 / the short diameter of the insulated wire 1.
  • the flatness of the insulated wire 1 is preferably 1.1 or more and 4 or less. When the flatness ratio is 1.1 or more, the above flat effect is easily obtained.
  • the flatness is more preferably 1.2 or more, and still more preferably 1.3 or more.
  • the conductor 2 is difficult to be disconnected.
  • the flatness is more preferably 3 or less, and still more preferably 2 or less.
  • the total area ratio of the plurality of insulated wires 1 in the first cross section is preferably 20 area% or more and 90 area% or less.
  • the total area ratio is more preferably 30 area% or more, and still more preferably 40 area% or more.
  • the total area ratio is 90 area% or less, even if the injection molded product 4 is damaged, the conductor 2 is hardly exposed to the outside.
  • the total area ratio is more preferably 80 area% or less, still more preferably 70 area% or less.
  • the total area ratio of the plurality of insulated wires 1 with respect to the region surrounded by the outermost tangent lines of the plurality of insulated wires 1 in the first cross section is preferably 70 area% or more. , Less than 100 area%.
  • the total area ratio is more preferably 80 area% or more, and still more preferably 90 area% or more.
  • the total area ratio is more preferably 98 area% or less, still more preferably 95 area% or less.
  • the preferable total area ratio of the plurality of insulated wires 1 in the second cross section is the same as the preferable total area ratio of the plurality of insulated wires 1 in the first section.
  • the total area ratio of the plurality of insulated wires 1 with respect to the region surrounded by the outermost tangent lines of the plurality of insulated wires 1 in the second cross section is preferably 60 area% or more. 95% by area or less.
  • the total area ratio with respect to the second outermost tangent region is 60 area% or more, the plurality of insulated wires 1 at the one end A are likely to be in a tightly bundled state. More preferably, it is 65 area% or more, More preferably, it is 70 area% or more.
  • the resin is easily filled, and the airtightness of the injection-molded product 4 is increased. More preferably, it is 90 area% or less, More preferably, it is 80 area% or less.
  • the plurality of insulated wires 1 have the same diameter, but may have different diameters.
  • the diameter of the insulated wire 1 is not particularly limited, but is approximately 0.3 to 10 mm.
  • the diameter of the injection molded product 4 is not particularly limited, but is approximately 2 to 100 mm.
  • FIG.3 (a) is a side view of the injection molded product of the wire harness and its peripheral part in 2nd Embodiment.
  • FIG.3 (b) is the figure which saw through the inside of the injection molded product of Fig.3 (a).
  • the same number is described to the component similar to the wire harness 10 of 1st Embodiment, The description is abbreviate
  • the plurality of insulated wires 1 are sealed with an injection-molded product 4. Some insulated wires 1 out of the plurality of insulated wires 1 protrude from the other end B of the injection-molded product 4.
  • the exposed portion 5 only needs to be sealed by the injection molded product 4, and a part of the insulated wire 1 can be protruded from the injection molded product 4.
  • the wire harness 10 of this invention becomes what is easy to use for various uses.
  • the exposed portions 5 do not necessarily have to exist in all the insulated wires 1 in the injection-molded product 4, and the exposed portions 5 in some of the insulated wires 1. May be present.
  • FIG. 4 is a schematic explanatory view of injection molding.
  • Fig.5 (a) is sectional drawing inside a slot.
  • FIG.5 (b) is sectional drawing inside a metal mold
  • the lower mold 30a has a recessed lower insertion piece 20a.
  • the lower mold 30a is provided with a groove 31a.
  • the plurality of insulated wires 1 are fitted into the groove portion 21a of the lower insertion piece 20a so that the exposed portion 5 of the insulated wire 1 is positioned in the groove portion 31a of the lower mold 30a.
  • the plurality of insulated wires 1 fitted into the groove 21a of the lower insertion piece 20a are pressed down by the convex portions of the upper insertion piece 20b inserted into the upper mold 30b. Thereby, the some insulated wire 1 of this part will be in the state bundled tightly.
  • the density of the plurality of insulated wires 1 can be controlled by changing the height of the convex portion of the upper insertion piece 20b.
  • FIG. 5B is a cross-sectional view of the inside of the mold when the upper mold 30b is superimposed on the lower mold 30a of FIG. Resin is filled in the space formed by the groove 31a of the lower mold 30a and the groove 31b of the upper mold 30b.
  • Resin filling is performed by injecting molten resin into the mold. At that time, for example, the resin may be poured in the direction of the arrow through the runner 32 as shown in FIG. Although FIG. 4 shows one runner and one flow direction, there is no problem even if a plurality of runners are provided in the mold and a plurality of injection molded products are molded.
  • the injection pressure is not particularly limited, but is preferably 0.05 MPa or more and 50 MPa or less.
  • the resin can be easily filled by setting the injection pressure to 0.05 MPa or more.
  • it can shape

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  • Insulated Conductors (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention addresses the issue of providing a wire harness capable of responding to various needs of a user. This wire harness has a plurality of insulated electrical wires sealed therein that comprise an insulation layer coated on the surface of a conductor. The insulated electrical wires are characterized by: having an exposed section that does not have the insulation layer coated thereupon and has the conductor exposed; and at least the exposed section being sealed by an injection molded product.

Description

ワイヤハーネスWire harness
　本発明は、複数の絶縁電線が射出成形物により封止されているワイヤハーネスに関する。 The present invention relates to a wire harness in which a plurality of insulated wires are sealed with an injection molded product.
　従来、バイクや自動車等の車両には、複数の絶縁電線を部分的に一括して、収容しやすくしたワイヤハーネスが設置されている。絶縁電線束を一括するために、絶縁電線の絶縁層を部分的に剥いで導体を露出させて、この露出部を溶接、圧着等により接合する場合がある。この場合、露出部から浸水したり漏電したりする問題があった。このような問題を解決するために露出部を樹脂で封止する技術が知られている。 Conventionally, in a vehicle such as a motorcycle or an automobile, a wire harness that facilitates accommodating a plurality of insulated wires partially in a lump is installed. In order to bundle the insulated wire bundle, the insulating layer of the insulated wire may be partially peeled to expose the conductor, and the exposed portion may be joined by welding, pressure bonding, or the like. In this case, there is a problem that water is leaked from the exposed portion or current is leaked. In order to solve such a problem, a technique for sealing an exposed portion with a resin is known.
　例えば、特許文献１には、絶縁電線の露出部を光硬化樹脂によって封止したワイヤハーネスが開示されている。 For example, Patent Document 1 discloses a wire harness in which an exposed portion of an insulated wire is sealed with a photocurable resin.
特開２０１１－１１３６９２号公報JP 2011-113692 A
　近年、ワイヤハーネスの封止部分に対する利用者のニーズが多様化している。 In recent years, users' needs for wire harness sealing parts have diversified.
　本発明は上記事情に鑑みてなされたものであり、その目的は、利用者の様々なニーズに応えることが可能なワイヤハーネスを提供することにある。 The present invention has been made in view of the above circumstances, and an object thereof is to provide a wire harness capable of meeting various needs of users.
　本発明者らは、前記課題を解決するために鋭意研究を重ねた。その結果、導体の表面に絶縁層が被覆されている複数の絶縁電線が封止されているワイヤハーネスであって、前記絶縁電線は、前記絶縁層が被覆されておらず前記導体が露出している露出部を有し、少なくとも前記露出部は、射出成形物により封止されていることで、様々な場所に収容し易いワイヤハーネスを得ることができることを見出し、本発明を完成した。 The inventors of the present invention have made extensive studies to solve the above-mentioned problems. As a result, it is a wire harness in which a plurality of insulated wires whose surfaces are covered with an insulating layer are sealed, and the insulated wires are not covered with the insulating layer and the conductor is exposed. It has been found that a wire harness that can be easily accommodated in various places can be obtained by having at least an exposed portion, and at least the exposed portion being sealed with an injection molded product.
　本発明の構成は以下のとおりである。
項１．導体の表面に絶縁層が被覆されている複数の絶縁電線が封止されているワイヤハーネスであって、
　前記絶縁電線は、前記絶縁層が被覆されておらず前記導体が露出している露出部を有し、
　少なくとも前記露出部は、射出成形物により封止されていることを特徴とするワイヤハーネス。
項２．前記露出部は、互いに接合している項１に記載のワイヤハーネス。
項３．前記射出成形物の軸方向の一端部であって前記露出部の反対側には、前記複数の絶縁電線が存在しており、
　前記一端部から前記射出成形物の軸方向長さの１／３離れた位置（以下、１／３位置という）よりも他端部側に前記露出部が存在する項１または２に記載のワイヤハーネス。
項４．前記一端部における前記軸方向に垂直な第１の断面での前記複数の絶縁電線の最外接線は、
　前記１／３位置における前記軸方向に垂直な第２の断面での前記複数の絶縁電線の最外接線よりも短い項３に記載のワイヤハーネス。
項５．前記第１の断面における前記絶縁電線の形状は扁平状である項４に記載のワイヤハーネス。
項６．前記第１の断面における前記複数の絶縁電線の合計面積率は２０面積％以上、９０面積％以下である項４または５に記載のワイヤハーネス。
項７．前記複数の絶縁電線のうち一部の絶縁電線は、
　前記軸方向に前記他端部から突出している項３～６のいずれかに記載のワイヤハーネス。 The configuration of the present invention is as follows.
Item 1. A wire harness in which a plurality of insulated wires whose surfaces are covered with an insulating layer are sealed,
The insulated wire has an exposed portion where the insulating layer is not covered and the conductor is exposed,
At least the exposed portion is sealed with an injection molded product.
Item 2. Item 2. The wire harness according to Item 1, wherein the exposed portions are joined to each other.
Item 3. The plurality of insulated wires exist on one end in the axial direction of the injection molded product and on the side opposite to the exposed portion,
Item 3. The wire according to Item 1 or 2, wherein the exposed portion is present on the other end side from a position (hereinafter, referred to as １ ／ position) that is one third of the axial length of the injection-molded product from the one end portion. Harness.
Item 4. The outermost tangent lines of the plurality of insulated wires in the first cross section perpendicular to the axial direction at the one end are:
Item 4. The wire harness according to Item 3, wherein the wire harness is shorter than an outermost tangent of the plurality of insulated wires in a second cross section perpendicular to the axial direction at the 1/3 position.
Item 5. Item 5. The wire harness according to Item 4, wherein the shape of the insulated wire in the first section is flat.
Item 6. Item 6. The wire harness according to Item 4 or 5, wherein a total area ratio of the plurality of insulated wires in the first cross section is 20 area% or more and 90 area% or less.
Item 7. Among the plurality of insulated wires, some insulated wires are
Item 7. The wire harness according to any one of Items 3 to 6, which protrudes from the other end portion in the axial direction.
　本発明によれば、上記構成により、様々な場所に収容し易いワイヤハーネスを得ることができる。 According to the present invention, a wire harness that can be easily accommodated in various places can be obtained by the above configuration.
図１（ａ）は、第１の実施形態におけるワイヤハーネスの射出成形物およびその周辺部の側面図である。図１（ｂ）は、図１（ａ）の射出成形物内を透視した図である。Fig.1 (a) is a side view of the injection molded product of the wire harness and its peripheral part in 1st Embodiment. FIG.1 (b) is the figure which saw through the inside of the injection molded product of Fig.1 (a). 図２（ａ）は、図１（ａ）に示した射出成形物のＸ－Ｘ断面図である。図２（ｂ）は、図１（ａ）に示した射出成形物のＹ－Ｙ断面図である。FIG. 2A is an XX cross-sectional view of the injection-molded product shown in FIG. FIG. 2B is a YY sectional view of the injection-molded product shown in FIG. 図３（ａ）は、第２の実施形態におけるワイヤハーネスの射出成形物およびその周辺部の側面図である。図３（ｂ）は、図３（ａ）の射出成形物内を透視した図である。Fig.3 (a) is a side view of the injection molded product of the wire harness and its peripheral part in 2nd Embodiment. FIG.3 (b) is the figure which saw through the inside of the injection molded product of Fig.3 (a). 図４は、射出成形の概略説明図である。FIG. 4 is a schematic explanatory view of injection molding. 図５（ａ）は、射出成形に用いる入れ駒内部の断面図である。図５（ｂ）は、射出成形に用いる金型内部の断面図である。Fig.5 (a) is sectional drawing inside the insert piece used for injection molding. FIG.5 (b) is sectional drawing inside a metal mold | die used for injection molding.
　本発明のワイヤハーネスは、導体の表面に絶縁層が被覆されている複数の絶縁電線が封止されているワイヤハーネスであって、上記絶縁電線は、上記絶縁層が被覆されておらず上記導体が露出している露出部を有し、少なくとも上記露出部は、射出成形物により封止されているものである。 The wire harness of the present invention is a wire harness in which a plurality of insulated wires whose surfaces are covered with an insulating layer are sealed, and the insulated wires are not covered with the insulating layer and the conductor Is exposed, and at least the exposed portion is sealed with an injection molded product.
　以下、本発明のワイヤハーネスについて図面を参照しつつ説明する。 Hereinafter, the wire harness of the present invention will be described with reference to the drawings.
　（第１の実施形態）
　図１（ａ）は、第１の実施形態におけるワイヤハーネスの射出成形物およびその周辺部の側面図である。図１（ａ）に示すように、複数の絶縁電線１は、射出成形物４によって封止されている。 (First embodiment)
Fig.1 (a) is a side view of the injection molded product of the wire harness and its peripheral part in 1st Embodiment. As shown in FIG. 1A, the plurality of insulated wires 1 are sealed with an injection molded product 4.
　図１（ｂ）は、図１（ａ）の射出成形物内を透視した図である。図１（ｂ）中、二点鎖線は射出成形物４が存在する部分を示す。図１（ｂ）に示すように、絶縁電線１は導体２の表面に絶縁層３が被覆されているものであるが、絶縁電線１の先端部には、絶縁層３が被覆されておらず導体２が露出している露出部５が存在している。露出部５は射出成形物４によって封止されている。露出部５は互いに接合している。 FIG. 1 (b) is a perspective view of the inside of the injection-molded product of FIG. 1 (a). In FIG.1 (b), a dashed-two dotted line shows the part in which the injection molded product 4 exists. As shown in FIG. 1B, the insulated wire 1 has a conductor 2 with a surface coated with an insulating layer 3, but the insulated wire 1 is not covered with the insulating layer 3 at the tip. There is an exposed portion 5 where the conductor 2 is exposed. The exposed portion 5 is sealed with the injection molded product 4. The exposed portions 5 are joined to each other.
　本発明では、少なくとも露出部５が射出成形物４によって封止されていればよく、これにより浸水や漏電を防止し易くすることができる。浸水や漏電防止の観点より、図１（ｂ）に示すように、露出部５と共に、絶縁電線１の露出部５と隣接する部分についても、射出成形物４によって封止されていることが好ましい。 In the present invention, it is only necessary that at least the exposed portion 5 is sealed by the injection molded product 4, thereby making it easy to prevent water immersion and leakage. From the viewpoint of preventing flooding and leakage, it is preferable that the exposed portion 5 and the portion adjacent to the exposed portion 5 of the insulated wire 1 are also sealed with the injection molded product 4 as shown in FIG. .
　射出成形物４の形状は、第１の実施形態では円柱形である。射出成形物４は、樹脂を射出成形して得られるものであるため、その形状は様々であり、円柱の他、楕円柱、立方体、直方体等の形状が挙げられる。このように射出成形物４の形状は様々であるため、様々な場所に収容することができる。 The shape of the injection-molded product 4 is a cylindrical shape in the first embodiment. Since the injection-molded product 4 is obtained by injection-molding a resin, the shape thereof is various, and examples include shapes such as elliptic cylinders, cubes, rectangular parallelepipeds in addition to cylinders. Thus, since the shape of the injection molded product 4 is various, it can be accommodated in various places.
　射出成形物４の素材は、特に限定されないが、絶縁層３、露出部５との接着性を考慮すると、ポリオレフィン、ポリアミド、ポリエステル等の樹脂が好ましい。そのうちポリエステル樹脂がより好ましい。市販品としてバイロショット（登録商標、東洋紡株式会社製）が挙げられる。バイロショットは、低圧でも射出することができるため、射出成形時の絶縁電線１の損傷を抑制し易くすることができる。そのためにバイロショットが更に好ましい。バイロショットとして、例えばバイロショット（登録商標）ＧＭ－９５５シリーズ、ＧＭ－９６０シリーズ等が挙げられる。 The material of the injection-molded product 4 is not particularly limited, but considering adhesiveness with the insulating layer 3 and the exposed portion 5, resins such as polyolefin, polyamide, and polyester are preferable. Of these, polyester resins are more preferred. Viroshot (registered trademark, manufactured by Toyobo Co., Ltd.) can be listed as a commercial product. Since the by-shot can be injected even at a low pressure, it is possible to easily suppress damage to the insulated wire 1 during injection molding. For this reason, a byro shot is more preferable. Examples of the byro shot include Viro Shot (registered trademark) GM-955 series, GM-960 series, and the like.
　本発明において、射出成形物４の特性を損なわない範囲で、従来の各種添加剤を添加することができる。添加剤として、シリカ、タルク等の充填剤；酸化アンチモン、水酸化アルミ、水酸化マグネシウム等の難燃剤；フタル酸エステル、アジピン酸エステル等の可塑剤；ポリエチレンワックス、シリコーンオイル等の離型剤；カルボジイミド等の加水分解抑制剤等が挙げられる。これらの添加剤は、その一種のみを単独で用いてもよく、二種以上を組み合わせて用いてもよい。添加剤の含有量は、射出成形物４の素材として用いられる樹脂１００質量部に対して、おおよそ０．１質量部以上、５０質量部以下であることが好ましい。添加剤の含有量は、より好ましくは１質量部以上、３０質量部以下、更に好ましくは５質量部以上、２０質量部以下である。 In the present invention, various conventional additives can be added as long as the properties of the injection-molded product 4 are not impaired. As additives, fillers such as silica and talc; flame retardants such as antimony oxide, aluminum hydroxide and magnesium hydroxide; plasticizers such as phthalate ester and adipic acid ester; mold release agents such as polyethylene wax and silicone oil; Examples thereof include hydrolysis inhibitors such as carbodiimide. These additives may be used alone or in combination of two or more. The content of the additive is preferably about 0.1 parts by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the resin used as the material of the injection-molded product 4. The content of the additive is more preferably 1 part by mass or more and 30 parts by mass or less, and further preferably 5 parts by mass or more and 20 parts by mass or less.
　露出部５は、必ずしも互いに接合している必要はないが、接合している方が露出部５を封止し易くなる。そのために、露出部５どうし互いに接合していることが好ましい。接合方法は、公知の方法である溶接、圧着等を行えば良い。 The exposed portions 5 are not necessarily bonded to each other, but the exposed portions 5 are easier to seal the exposed portions 5. Therefore, it is preferable that the exposed portions 5 are joined to each other. The joining method may be a known method such as welding or pressure bonding.
　露出部５は、必ずしも絶縁電線１の先端に存在する必要はないが、露出部５の接合のし易さの観点より、露出部５は絶縁電線１の先端に存在することが好ましい。 The exposed portion 5 is not necessarily present at the tip of the insulated wire 1, but the exposed portion 5 is preferably present at the tip of the insulated wire 1 from the viewpoint of easy joining of the exposed portion 5.
　絶縁電線１は、バイク等に用いられる一般的な絶縁電線である。導体２の素材は、銅、銅合金、アルミニウム、銀、またはこれらを金メッキ、錫メッキしたもの等が挙げられる。絶縁層３の素材は、ポリ塩化ビニル、ポリエチレン、ポリプロピレン等の樹脂が挙げられる。 The insulated wire 1 is a general insulated wire used for motorcycles and the like. Examples of the material of the conductor 2 include copper, copper alloy, aluminum, silver, or those plated with gold or tin. Examples of the material for the insulating layer 3 include resins such as polyvinyl chloride, polyethylene, and polypropylene.
　図１（ａ）、（ｂ）中、破線矢印は、射出成形物４の軸方向を示す。 1 (a) and 1 (b), the broken line arrows indicate the axial direction of the injection molded product 4.
　図１（ｂ）に示すとおり、射出成形物４の軸方向の一端部Ａは、露出部５の反対側に位置し、一端部Ａには複数の絶縁電線１が存在している。射出成形物４の一端部Ａから、射出成形物４の軸方向長さ（破線矢印の長さ）の１／３離れた１／３位置（以下では、位置Ｃと呼ぶ）よりも他端部Ｂ側に露出部５が存在している。 As shown in FIG. 1B, one end A in the axial direction of the injection-molded product 4 is located on the opposite side of the exposed portion 5, and a plurality of insulated wires 1 are present at the one end A. The other end of the injection molded product 4 from the one-third position (hereinafter referred to as the position C) that is one-third away from the axial length of the injection-molded product 4 (the length of the dashed arrow) from the one end A of the injection molded product 4 An exposed portion 5 exists on the B side.
　射出成形物４の一端部Ａは、複数の絶縁電線１が陥入している部分であるため、経年劣化等による隙間が生じ易い。この隙間から浸水した場合、露出部５が一端部Ａに近すぎると、露出部５をつたって絶縁電線１の内部まで浸水するおそれがあるが、露出部５を一端部Ａから離れた位置に存在させることにより、浸水を防止し易くすることができる。そのために露出部５は、軸方向に位置Ｃよりも他端部Ｂ側に存在することが好ましい。更に露出部５は、一端部Ａから、射出成形物４の軸方向長さの１／２離れた１／２位置よりも他端部Ｂ側に存在することがより好ましい。 Since one end A of the injection-molded product 4 is a portion where a plurality of insulated wires 1 are indented, a gap due to aging or the like is likely to occur. When the exposed portion 5 is too close to the one end A when the water is immersed from this gap, there is a possibility that the exposed portion 5 is connected to the inside of the insulated wire 1, but the exposed portion 5 is at a position away from the one end A. By making it exist, it can be made easy to prevent flooding. Therefore, it is preferable that the exposed part 5 exists in the axial direction at the other end B side rather than the position C. Furthermore, it is more preferable that the exposed portion 5 exists on the other end B side from a half position that is 1/2 the axial length of the injection-molded product 4 from the one end A.
　一方、露出部５が他端部Ｂに近すぎると、他端部Ｂが損傷した場合、露出部５が外部に露出するおそれがある。そのために露出部５は、他端部Ｂから、射出成形物４の軸方向長さの１／２０離れた位置よりも一端部Ａ側に存在することが好ましい。 On the other hand, if the exposed portion 5 is too close to the other end B, the exposed portion 5 may be exposed to the outside when the other end B is damaged. Therefore, it is preferable that the exposed part 5 exists in the one end part A side rather than the position which is 1/20 distance from the other end part B of the axial direction length of the injection molded product 4.
　射出成形物４の軸方向長さは、特に限定されないが、おおよそ１～２０ｃｍである。 The axial length of the injection-molded product 4 is not particularly limited, but is approximately 1 to 20 cm.
　図２（ａ）は、図１（ａ）の一端部Ａにおける軸方向に垂直なＸ－Ｘ断面図である。図２（ｂ）は、図１（ａ）の位置Ｃにおける軸方向に垂直なＹ－Ｙ断面図である。以下では、Ｘ－Ｘ断面を単に第１の断面と呼ぶ場合がある。また、Ｙ－Ｙ断面を単に第２の断面と呼ぶ場合がある。 FIG. 2A is an XX cross-sectional view perpendicular to the axial direction at one end A of FIG. FIG. 2B is a YY cross-sectional view perpendicular to the axial direction at position C in FIG. Hereinafter, the XX section may be simply referred to as a first section. Further, the YY section may be simply referred to as a second section.
　図２（ａ）、（ｂ）中、破線は各断面における複数の絶縁電線１の最外接線を示す。図２（ａ）における複数の絶縁電線１の最外接線は、図２（ｂ）における複数の絶縁電線１の最外接線よりも短くなっている。これは、図１（ａ）の一端部Ａの方が位置Ｃよりも、絶縁電線１が密に束ねられていることを意味する。このように一端部Ａの絶縁電線１が密に束ねられていることにより、射出成形における一端部Ａからの樹脂漏れを少なくすることができる。樹脂漏れとは、射出成形時に樹脂が所望の形状に収まらずに絶縁電線１をつたってそのまま固化して外観性状を損なうことである。 2A and 2B, the broken lines indicate the outermost tangent lines of the plurality of insulated wires 1 in each cross section. The outermost tangent lines of the plurality of insulated wires 1 in FIG. 2 (a) are shorter than the outermost tangent lines of the plurality of insulated wires 1 in FIG. 2 (b). This means that the insulated wire 1 is bundled more densely at the one end A of FIG. Thus, since the insulated wire 1 of the one end A is tightly bundled, the resin leakage from the one end A in the injection molding can be reduced. The resin leakage means that the resin does not fit in a desired shape during injection molding, and the insulated wire 1 is connected and solidified as it is to deteriorate the appearance properties.
　本発明における最外接線とは、射出成形物４の軸方向に垂直な断面において、複数の絶縁電線１を囲むようにして複数の絶縁電線１と外接する接線であって、最短のものを意味する。 The outermost tangent in the present invention means the shortest tangent that circumscribes the plurality of insulated wires 1 so as to surround the plurality of insulated wires 1 in a cross section perpendicular to the axial direction of the injection molded product 4.
　更に、一端部Ａの絶縁電線１が密に束ねられていることにより、射出成形時に必要な射出圧力をかけ易くなるため、樹脂が充填され易くなり、その結果、射出成形物４の気密性が高くなる。なお、図２（ａ）では、絶縁電線１どうし互いに接触しているが、接触しない絶縁電線１が含まれていても良い。 Furthermore, since the insulated wire 1 at the one end A is tightly bundled, it becomes easy to apply the injection pressure required at the time of injection molding, so that the resin is easily filled, and as a result, the airtightness of the injection molded product 4 is improved. Get higher. In FIG. 2A, the insulated wires 1 are in contact with each other, but the insulated wires 1 that are not in contact may be included.
　一方、位置Ｃ側では、各絶縁電線１の間隙が広がっているため、内部まで樹脂が入りこみ易くなり、射出成形物４の気密性が高くなる。なお、図２（ｂ）では、各絶縁電線１は接触していないが、気密性を損なわない程度であれば、部分的に接触していても良い。 On the other hand, on the position C side, since the gaps between the insulated wires 1 are widened, the resin can easily enter the inside, and the airtightness of the injection molded product 4 is increased. In addition, in FIG.2 (b), although each insulated wire 1 is not contacting, if it is a grade which does not impair airtightness, you may contact partially.
　このような樹脂漏れの低減および気密性向上の観点より、第１の断面における複数の絶縁電線１の最外接線は、第２の断面における複数の絶縁電線１の最外接線よりも短い方が好ましい。 From the viewpoint of reducing such resin leakage and improving airtightness, the outermost tangent of the plurality of insulated wires 1 in the first section is shorter than the outermost tangent of the plurality of insulated wires 1 in the second section. preferable.
　また、図示していないが、第１の断面における絶縁電線１の形状は、扁平状であることが好ましい。扁平状であることにより、各絶縁電線１の接触点が増えるため、一端部Ａにおいて複数の絶縁電線１を密に束ねられた状態になり易くなる。 Although not shown, the shape of the insulated wire 1 in the first cross section is preferably flat. Since the contact point of each insulated wire 1 is increased due to the flat shape, a plurality of insulated wires 1 are easily bundled at one end A.
　絶縁電線１の扁平率は、絶縁電線１の長径／絶縁電線１の短径により規定される。絶縁電線１の扁平率は、好ましくは１．１以上、４以下である。扁平率が１．１以上であることにより上記扁平状の効果が得られ易くなる。扁平率は、より好ましくは１．２以上、更に好ましくは１．３以上である。一方、扁平率が４以下であることにより、導体２が断線しにくくなる。扁平率は、より好ましくは３以下、更に好ましくは２以下である。 The flatness of the insulated wire 1 is defined by the long diameter of the insulated wire 1 / the short diameter of the insulated wire 1. The flatness of the insulated wire 1 is preferably 1.1 or more and 4 or less. When the flatness ratio is 1.1 or more, the above flat effect is easily obtained. The flatness is more preferably 1.2 or more, and still more preferably 1.3 or more. On the other hand, when the flatness is 4 or less, the conductor 2 is difficult to be disconnected. The flatness is more preferably 3 or less, and still more preferably 2 or less.
　第１の断面における複数の絶縁電線１の合計面積率は、好ましくは２０面積％以上、９０面積％以下である。合計面積率が２０面積％以上であることにより、射出成形物４に用いる樹脂量を少なくすることができ、コストを低減することができる。合計面積率は、より好ましくは３０面積％以上、更に好ましくは４０面積％以上である。一方、合計面積率が９０面積％以下であることにより、射出成形物４が損傷しても、導体２が外部に露出しにくくなる。合計面積率は、より好ましくは８０面積％以下、更に好ましくは７０面積％以下である。 The total area ratio of the plurality of insulated wires 1 in the first cross section is preferably 20 area% or more and 90 area% or less. When the total area ratio is 20 area% or more, the amount of resin used for the injection molded product 4 can be reduced, and the cost can be reduced. The total area ratio is more preferably 30 area% or more, and still more preferably 40 area% or more. On the other hand, when the total area ratio is 90 area% or less, even if the injection molded product 4 is damaged, the conductor 2 is hardly exposed to the outside. The total area ratio is more preferably 80 area% or less, still more preferably 70 area% or less.
　第１の断面における複数の絶縁電線１の最外接線で囲まれた領域（以下、第１の最外接線領域と呼ぶ）に対する複数の絶縁電線１の合計面積率は、好ましくは７０面積％以上、１００面積％未満である。第１の最外接線領域に対する合計面積率が７０面積％以上であることにより、樹脂漏れが低減され易くなる。合計面積率は、より好ましくは８０面積％以上、更に好ましくは９０面積％以上である。一方、第１の最外接線領域に対する合計面積率が１００面積％未満であることにより、導体２が断線しにくくなる。合計面積率は、より好ましくは９８面積％以下、更に好ましくは９５面積％以下である。 The total area ratio of the plurality of insulated wires 1 with respect to the region surrounded by the outermost tangent lines of the plurality of insulated wires 1 in the first cross section (hereinafter referred to as the first outermost tangent region) is preferably 70 area% or more. , Less than 100 area%. When the total area ratio with respect to the first outermost tangent region is 70 area% or more, resin leakage is easily reduced. The total area ratio is more preferably 80 area% or more, and still more preferably 90 area% or more. On the other hand, when the total area ratio with respect to the first outermost tangent region is less than 100 area%, the conductor 2 is difficult to be disconnected. The total area ratio is more preferably 98 area% or less, still more preferably 95 area% or less.
　第２の断面における複数の絶縁電線１の好ましい合計面積率は、第１の断面における複数の絶縁電線１の好ましい合計面積率と同じである。 The preferable total area ratio of the plurality of insulated wires 1 in the second cross section is the same as the preferable total area ratio of the plurality of insulated wires 1 in the first section.
　第２の断面における複数の絶縁電線１の最外接線で囲まれた領域（以下、第２の最外接線領域と呼ぶ）に対する複数の絶縁電線１の合計面積率は、好ましくは６０面積％以上、９５面積％以下である。第２の最外接線領域に対する合計面積率が６０面積％以上であることにより、一端部Ａにおける複数の絶縁電線１が密に束ねられた状態になり易くなる。より好ましくは６５面積％以上、更に好ましくは７０面積％以上である。一方、第２の最外接線領域に対する合計面積率が９５面積％以下であることにより、樹脂が充填され易くなり、射出成形物４の気密性が高くなる。より好ましくは９０面積％以下、更に好ましくは８０面積％以下である。 The total area ratio of the plurality of insulated wires 1 with respect to the region surrounded by the outermost tangent lines of the plurality of insulated wires 1 in the second cross section (hereinafter referred to as the second outermost tangent region) is preferably 60 area% or more. 95% by area or less. When the total area ratio with respect to the second outermost tangent region is 60 area% or more, the plurality of insulated wires 1 at the one end A are likely to be in a tightly bundled state. More preferably, it is 65 area% or more, More preferably, it is 70 area% or more. On the other hand, when the total area ratio with respect to the second outermost tangent region is 95 area% or less, the resin is easily filled, and the airtightness of the injection-molded product 4 is increased. More preferably, it is 90 area% or less, More preferably, it is 80 area% or less.
　図２（ａ）、（ｂ）に示すとおり、第１の実施形態では、複数の絶縁電線１は、それぞれ同じ径であるが、それぞれ異なる径のものを用いても良い。 2A and 2B, in the first embodiment, the plurality of insulated wires 1 have the same diameter, but may have different diameters.
　絶縁電線１の径は、特に限定されないが、おおよそ０．３～１０ｍｍである。 The diameter of the insulated wire 1 is not particularly limited, but is approximately 0.3 to 10 mm.
　射出成形物４の径は、特に限定されないが、おおよそ２～１００ｍｍである。 The diameter of the injection molded product 4 is not particularly limited, but is approximately 2 to 100 mm.
　（第２の実施形態）
　図３（ａ）は、第２の実施形態におけるワイヤハーネスの射出成形物およびその周辺部の側面図である。図３（ｂ）は、図３（ａ）の射出成形物内を透視した図である。なお、第１の実施形態のワイヤハーネス１０と同様の構成要素には同一番号を記し、その説明を省略する。 (Second Embodiment)
Fig.3 (a) is a side view of the injection molded product of the wire harness and its peripheral part in 2nd Embodiment. FIG.3 (b) is the figure which saw through the inside of the injection molded product of Fig.3 (a). In addition, the same number is described to the component similar to the wire harness 10 of 1st Embodiment, The description is abbreviate | omitted.
　図３（ａ）に示すように、複数の絶縁電線１は、射出成形物４によって封止されている。複数の絶縁電線１のうち一部の絶縁電線１は、射出成形物４の他端部Ｂから突出している。 As shown in FIG. 3 (a), the plurality of insulated wires 1 are sealed with an injection-molded product 4. Some insulated wires 1 out of the plurality of insulated wires 1 protrude from the other end B of the injection-molded product 4.
　本発明では、露出部５が射出成形物４により封止されていればよく、一部の絶縁電線１を射出成形物４から突出させることもできる。これにより、本発明のワイヤハーネス１０は、様々な用途に使用し易いものになる。 In the present invention, the exposed portion 5 only needs to be sealed by the injection molded product 4, and a part of the insulated wire 1 can be protruded from the injection molded product 4. Thereby, the wire harness 10 of this invention becomes what is easy to use for various uses.
　なお、図３（ｂ）に示すように、本発明では、射出成形物４内において、必ずしも全ての絶縁電線１に露出部５が存在する必要はなく、一部の絶縁電線１に露出部５が存在する態様であっても良い。 As shown in FIG. 3 (b), in the present invention, the exposed portions 5 do not necessarily have to exist in all the insulated wires 1 in the injection-molded product 4, and the exposed portions 5 in some of the insulated wires 1. May be present.
　次に、ワイヤハーネス１０の製造方法について、図４、５を参照しつつ説明する。 Next, a method for manufacturing the wire harness 10 will be described with reference to FIGS.
　図４は、射出成形の概略説明図である。図５（ａ）は、入れ駒内部の断面図である。図５（ｂ）は、金型内部の断面図である。 FIG. 4 is a schematic explanatory view of injection molding. Fig.5 (a) is sectional drawing inside a slot. FIG.5 (b) is sectional drawing inside a metal mold | die.
　図４の下側金型３０ａには、凹形状の下側入れ駒２０ａが陥入されている。下側金型３０ａには溝部３１ａが設けられている。 In FIG. 4, the lower mold 30a has a recessed lower insertion piece 20a. The lower mold 30a is provided with a groove 31a.
　まず、下側金型３０ａの溝部３１ａに絶縁電線１の露出部５が位置するように、下側入れ駒２０ａの溝部２１ａに複数の絶縁電線１をはめ込む。 First, the plurality of insulated wires 1 are fitted into the groove portion 21a of the lower insertion piece 20a so that the exposed portion 5 of the insulated wire 1 is positioned in the groove portion 31a of the lower mold 30a.
　次に、図５（ａ）に示すとおり、下側入れ駒２０ａの溝部２１ａにはめ込んだ複数の絶縁電線１を、上側金型３０ｂに陥入された上側入れ駒２０ｂの凸部によって押さえ込む。これにより、この部分の複数の絶縁電線１は密に束ねられた状態になる。上側入れ駒２０ｂの凸部の高さを変えることにより、複数の絶縁電線１の疎密を制御することができる。 Next, as shown in FIG. 5 (a), the plurality of insulated wires 1 fitted into the groove 21a of the lower insertion piece 20a are pressed down by the convex portions of the upper insertion piece 20b inserted into the upper mold 30b. Thereby, the some insulated wire 1 of this part will be in the state bundled tightly. The density of the plurality of insulated wires 1 can be controlled by changing the height of the convex portion of the upper insertion piece 20b.
　図５（ｂ）は、図４の下側金型３０ａに上側金型３０ｂを重ね合わせたときの金型内部の断面図である。下側金型３０ａの溝部３１ａと、上側金型３０ｂの溝部３１ｂにより形成される空間に樹脂を充填する。 FIG. 5B is a cross-sectional view of the inside of the mold when the upper mold 30b is superimposed on the lower mold 30a of FIG. Resin is filled in the space formed by the groove 31a of the lower mold 30a and the groove 31b of the upper mold 30b.
　樹脂の充填は、溶融状態の樹脂を金型内に射出して行う。その際に、例えば、図４に示すようなランナー３２を介して、矢印方向に樹脂を流し込めば良い。なお、図４には１つのランナーと１つの流動方向を示しているが、金型にランナーを複数個設けて、複数個射出成形物を成型しても何ら問題ない。 Resin filling is performed by injecting molten resin into the mold. At that time, for example, the resin may be poured in the direction of the arrow through the runner 32 as shown in FIG. Although FIG. 4 shows one runner and one flow direction, there is no problem even if a plurality of runners are provided in the mold and a plurality of injection molded products are molded.
　このようにして樹脂を充填した後、冷却して、余分な部分を除去することにより射出成形物４が形成され、ワイヤハーネス１０が得られる。 After filling with the resin in this way, cooling is performed to remove the excess portion, whereby the injection molded product 4 is formed, and the wire harness 10 is obtained.
　射出圧力は、特に限定されないが０．０５ＭＰａ以上、５０ＭＰａ以下であることが好ましい。射出圧力を５０ＭＰａ以下とすることにより、射出時の絶縁電線１の動きを抑制することができ、絶縁電線１の損傷を抑制し易くすることができる。一方、射出圧力を０．０５ＭＰａ以上とすることにより、樹脂を充填し易くすることができる。なお、樹脂としてバイロショットを用いる場合は、０．１ＭＰａ以上、３０ＭＰａ以下の低い射出圧力で成形することができる。 The injection pressure is not particularly limited, but is preferably 0.05 MPa or more and 50 MPa or less. By setting the injection pressure to 50 MPa or less, the movement of the insulated wire 1 at the time of injection can be suppressed, and damage to the insulated wire 1 can be easily suppressed. On the other hand, the resin can be easily filled by setting the injection pressure to 0.05 MPa or more. In addition, when using a byro shot as resin, it can shape | mold by the low injection pressure of 0.1 Mpa or more and 30 Mpa or less.
　本願は、２０１６年５月１９日に出願された日本国特許出願第２０１６－１００４２６号に基づく優先権の利益を主張するものである。２０１６年５月１９日に出願された日本国特許出願第２０１６－１００４２６号の明細書の全内容が、本願に参考のため援用される。 This application claims the benefit of priority based on Japanese Patent Application No. 2016-1000042 filed on May 19, 2016. The entire contents of Japanese Patent Application No. 2016-1000042 filed on May 19, 2016 are incorporated herein by reference.
　１　　　絶縁電線
　２　　　導体
　３　　　絶縁層
　４　　　射出成形物
　５　　　露出部
　１０　　ワイヤハーネス
　２０ａ　下側入れ駒
　２０ｂ　上側入れ駒
　２１ａ　下側入れ駒の溝部
　３０ａ　下側金型　３０ｂ　上側金型
　３１ａ　下側金型の溝部
　３１ｂ　上側金型の溝部
　３２　　ランナー
　Ａ　　　一端部
　Ｂ　　　他端部
　Ｃ　　　１／３位置 DESCRIPTION OF SYMBOLS 1 Insulated electric wire 2 Conductor 3 Insulating layer 4 Injection molded product 5 Exposed part 10 Wire harness 20a Lower insertion piece 20b Upper insertion piece 21a Lower insertion piece groove 30a Lower mold 30b Upper mold 31a Lower mold groove 31b Upper mold groove 32 Runner A One end B Other end C 1/3 position

Claims (7)

  1. 　導体の表面に絶縁層が被覆されている複数の絶縁電線が封止されているワイヤハーネスであって、
    　前記絶縁電線は、前記絶縁層が被覆されておらず前記導体が露出している露出部を有し、
    　少なくとも前記露出部は、射出成形物により封止されていることを特徴とするワイヤハーネス。     A wire harness in which a plurality of insulated wires whose surfaces are covered with an insulating layer are sealed,
    The insulated wire has an exposed portion where the insulating layer is not covered and the conductor is exposed,
    At least the exposed portion is sealed with an injection molded product.
  2. 　前記露出部は、互いに接合している請求項１に記載のワイヤハーネス。 The wire harness according to claim 1, wherein the exposed portions are joined to each other.
  3. 　前記射出成形物の軸方向の一端部であって前記露出部の反対側には、前記複数の絶縁電線が存在しており、
    　前記一端部から前記射出成形物の軸方向長さの１／３離れた位置（以下、１／３位置という）よりも他端部側に前記露出部が存在する請求項１または２に記載のワイヤハーネス。     The plurality of insulated wires exist on one end in the axial direction of the injection molded product and on the side opposite to the exposed portion,
    The said exposed part exists in the other end part side rather than the position (henceforth 1/3 position) 1/3 distance of the axial direction length of the said injection molded product from the said one end part. Wire harness.
  4. 　前記一端部における前記軸方向に垂直な第１の断面での前記複数の絶縁電線の最外接線は、
    　前記１／３位置における前記軸方向に垂直な第２の断面での前記複数の絶縁電線の最外接線よりも短い請求項３に記載のワイヤハーネス。     The outermost tangent lines of the plurality of insulated wires in the first cross section perpendicular to the axial direction at the one end are:
    The wire harness according to claim 3, wherein the wire harness is shorter than an outermost tangent line of the plurality of insulated wires in a second cross section perpendicular to the axial direction at the 1/3 position.
  5. 　前記第１の断面における前記絶縁電線の形状は扁平状である請求項４に記載のワイヤハーネス。 The wire harness according to claim 4, wherein the shape of the insulated wire in the first cross section is a flat shape.
  6. 　前記第１の断面における前記複数の絶縁電線の合計面積率は２０面積％以上、９０面積％以下である請求項４または５に記載のワイヤハーネス。 The wire harness according to claim 4 or 5, wherein a total area ratio of the plurality of insulated wires in the first cross section is 20 area% or more and 90 area% or less.
  7. 　前記複数の絶縁電線のうち一部の絶縁電線は、
    　前記軸方向に前記他端部から突出している請求項３～６のいずれかに記載のワイヤハーネス。     Among the plurality of insulated wires, some insulated wires are
    The wire harness according to any one of claims 3 to 6, wherein the wire harness protrudes from the other end in the axial direction.
PCT/JP2017/016215 2016-05-19 2017-04-24 Wire harness WO2017199699A1 (en)

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JP3392339B2 (en) * 1998-01-07 2003-03-31 矢崎総業株式会社 Mold structure and method of electric wire connection
JP2003151368A (en) * 2001-11-07 2003-05-23 Yonezawa Densen Kk Shielding wire with terminal waterproofing part
JP2010068613A (en) * 2008-09-10 2010-03-25 Yazaki Corp Wiring harness
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JPS55137677A (en) * 1979-04-13 1980-10-27 Matsushita Electric Ind Co Ltd Cord terminal instrument and method of manufacturing same
JP2000003624A (en) * 1998-06-16 2000-01-07 Yazaki Corp Nonhalogen fire-resistant branch cable
JP2009059569A (en) * 2007-08-31 2009-03-19 Fuji Densen Kogyo Kk Attachment plug

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