WO2013132570A1 - Method for producing electrical wire protecting structure and electrical wire protecting structure - Google Patents

Method for producing electrical wire protecting structure and electrical wire protecting structure Download PDF

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Publication number
WO2013132570A1
WO2013132570A1 PCT/JP2012/055508 JP2012055508W WO2013132570A1 WO 2013132570 A1 WO2013132570 A1 WO 2013132570A1 JP 2012055508 W JP2012055508 W JP 2012055508W WO 2013132570 A1 WO2013132570 A1 WO 2013132570A1
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WO
WIPO (PCT)
Prior art keywords
wire bundle
electric wire
sheet
protection structure
thermoplastic material
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PCT/JP2012/055508
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French (fr)
Japanese (ja)
Inventor
伸一 五十嵐
伸昌 瀧原
白藤　幸裕
聡 谷川
正道 山際
敦 村田
理 佐藤
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住友電装株式会社
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Application filed by 住友電装株式会社 filed Critical 住友電装株式会社
Priority to PCT/JP2012/055508 priority Critical patent/WO2013132570A1/en
Publication of WO2013132570A1 publication Critical patent/WO2013132570A1/en

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    • 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
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section

Definitions

  • This invention relates to a technique for protecting a wire bundle.
  • Patent Document 1 discloses a technique for protecting a wire bundle. More specifically, in Patent Document 1, a flat circuit body is sandwiched between two covering bodies made of a thermoplastic material, press-molded, the covering body is brought into close contact with the flat circuit body, and the covering bodies are welded together. Forming a wire harness.
  • an object of the present invention is to suppress variations in the form of the thermoplastic material covering the wire bundle.
  • the manufacturing method of the electric wire protection structure part which concerns on a 1st aspect is a manufacturing method of the electric wire protection structure part by which the electric wire bundle is protected, Comprising: (a) Winding a sheet-like thermoplastic material around the said electric wire bundle The step of covering the wire bundle, and (b) the sheet-like thermoplastic material with respect to the outer periphery of the wire bundle or the outer periphery of the sheet-like thermoplastic material already wound around the wire bundle. The sheet-like shape held in the form wound around the wire bundle in the step (a), and (c) the sheet-like shape held around the wire bundle in the step (b). Forming a thermoplastic material by heating and compression.
  • the manufacturing method of the electric wire protection structure part according to the second aspect is the manufacturing method of the electric wire protection structure part according to the first aspect, and is attached in advance to the sheet-like thermoplastic material in the step (b).
  • the sheet-like thermoplastic material is bonded with the adhesive material, and is held in the state wound around the wire bundle in the step (a).
  • the manufacturing method of the electric wire protection structure part which concerns on a 3rd aspect is a manufacturing method of the electric wire protection structure part which concerns on a 1st or 2nd aspect, Comprising: In the said process (a), the said sheet-like thermoplastic material is used. The at least two layers are wound around the wire bundle to cover the wire bundle.
  • a method for manufacturing an electric wire protection structure according to a fourth aspect is the method for manufacturing an electric wire protection structure according to any one of the first to third aspects, wherein in the step (a), the sheet shape A strip-shaped material is used as the thermoplastic material.
  • the manufacturing method of the electric wire protection structure part according to the fifth aspect is the manufacturing method of the electric wire protection structure part according to the fourth aspect, and in the step (a), the strip-shaped thermoplastic material is The wire bundle is covered by wrapping around the wire bundle while overlapping half of the width dimension.
  • a method for manufacturing an electric wire protection structure according to a sixth aspect is the method for manufacturing an electric wire protection structure according to any one of the first to third aspects, wherein in the step (a), the sheet shape A rectangular material is used as the thermoplastic material.
  • the electric wire protection structure according to the seventh aspect is an electric wire protection structure in which the electric wire bundle is protected, and a sheet-like thermoplastic material is wound around the outer peripheral portion of the electric wire bundle or the electric wire bundle.
  • a protective part that is molded by being heated and compressed in a state of being held in a form wound around the wire bundle in advance by being adhered to the outer peripheral part of the sheet-like thermoplastic material.
  • the wire bundle is covered.
  • the sheet-like thermoplastic material is applied to the outer peripheral part of the electric wire bundle or the outer peripheral part of the sheet-like thermoplastic material already wound around the electric wire bundle.
  • the thermoplastic material is held in a form wound around an electric wire bundle, and then the thermoplastic material is heated and compressed to be molded. For this reason, the relative movement of the thermoplastic material with respect to the wire bundle can be suppressed, and variations in the form of the thermoplastic material covering the wire bundle can be suppressed.
  • the adhesive material previously attached to the sheet-like thermoplastic material is used to hold the sheet-like thermoplastic material in a form wound around the electric wire bundle.
  • Step (a) and step (b) can be smoothly performed in a series of flows, and work efficiency can be improved.
  • the protection performance can be improved.
  • the belt-like sheet-like thermoplastic material because the belt-like sheet-like thermoplastic material is used, it can be wound flexibly corresponding to the shape of the electric wire bundle even at a bent portion, etc.
  • the wire bundle can be covered more reliably.
  • the belt-shaped thermoplastic material is wound around the electric wire bundle while being overlapped by half of the width dimension, so that it is efficiently doubled with respect to the protection target portion of the electric wire bundle. It can wind, can improve protection performance and can reduce the amount of thermoplastic material used.
  • the rectangular sheet-like thermoplastic material is used, it is possible to more easily cover the protection target portion in a wide range.
  • the sheet-like thermoplastic material is bonded to the outer peripheral portion of the electric wire bundle or the outer peripheral portion of the sheet-like thermoplastic material already wound around the electric wire bundle.
  • a protective portion that is heated and compressed and covers the outer periphery of the wire bundle is formed in a state in which the wire bundle is previously wound around the wire bundle. For this reason, the relative movement of the thermoplastic material with respect to the wire bundle can be suppressed, and variations in the form of the thermoplastic material covering the wire bundle can be suppressed.
  • This electric wire protection structure part is the structure which covered the electric wire bundle with the thermoplastic resin so that a protection and a form may be maintained.
  • the wire bundle is assumed to constitute a wire harness that is routed to a vehicle or the like.
  • This electric wire bundle is configured such that a plurality of electric wires are stacked so as to be adjacent to each other in the radial direction (a plurality of directions), and are bundled into a substantially circular shape, a substantially rectangular shape, or the like in cross section.
  • the wire protection structure 10 has a configuration in which the protection 22 covers the outer periphery of the wire bundle W (see FIG. 3).
  • the protection portion 22 is molded by being heated and pressurized (that is, hot pressed) in a state where the thermoplastic material covers the portion to be protected in the wire bundle W.
  • the portion to be protected of the wire bundle W is a portion within a range including a portion of the wire bundle W that is desired to be protected from contact with the outside in the extending direction or a portion that is desired to be maintained in a form corresponding to the routing route. Say it.
  • hot pressing means that a thermoplastic material to be processed is sandwiched between molds, and the thermoplastic material is molded by applying pressure while the mold is heated. More specifically, it may be performed using a pair of molds having a mold surface for molding the protection part 22 corresponding to the shape of the protection target portion of the wire bundle W. That is, by placing a thermoplastic material covering the wire bundle W on one mold and heating the pair of molds while moving the other mold relatively close to the one mold, Mold plastic material. Thereby, the electric wire protection structure part 10 which covered the electric wire bundle W with the protection part 22 of the state in which the thermoplastic material became hard is obtained.
  • the mold is not limited to a pair of molds, and may be formed of three or more divided molds.
  • thermoplastic material is a material that is partially or wholly melted or softened by heating and is solidified by cooling. And this thermoplastic material can maintain the shape
  • nonwoven material 20 is used as the thermoplastic material.
  • the nonwoven material 20 a material that can be partially or wholly melted or softened through a heating process and then hardened through a cooling process can be used.
  • a material containing basic fibers and an adhesive resin also called a binder
  • 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 20 to a temperature lower than the melting point of the basic fiber and higher than the melting point of the adhesive resin, the adhesive resin is melted and soaks between the basic fibers. Thereafter, when the temperature of the nonwoven material 20 decreases, the adhesive resin solidifies. Thereby, the nonwoven material 20 can be maintained in the molding state during heating.
  • a non-woven material 20 also called a non-woven fabric formed in a sheet shape is used (see FIG. 1).
  • the adhesive resin may be a thermoplastic resin fiber having a melting point lower than that of the basic fiber.
  • a resin fiber of PET polyethylene terephthalate
  • PEI polyethylene isophthalate
  • the wire protection structure 10 will be described following the manufacturing process.
  • an example of protecting a portion arranged in a straight line in the wire bundle W is shown, but the wire protection structure can be configured in the same manner for a portion arranged in a curved shape. .
  • the sheet-like nonwoven material 20 is wound around the wire bundle W to cover the entire protection target portion of the wire bundle W (step (a)).
  • the sheet-like nonwoven material 20 is wound around the outer periphery of the wire bundle W so as to overlap at least twice.
  • the thickness (number of overlaps) of the non-woven material 20 on the outer peripheral portion of the wire bundle W is determined experimentally or empirically in consideration of the specification of the vehicle in which the wire bundle W is incorporated, the routing location, and the like. Good.
  • the nonwoven material 20 is preferably wound so as to have the same thickness in the entire circumferential direction of the wire bundle W.
  • a strip-shaped non-woven material 20 is used. And the said strip
  • the non-woven material 20 is wound around the wire bundle W while shifting by half the width dimension in the extending direction of the wire bundle W.
  • the width of the non-woven material 20 may be determined empirically or experimentally in consideration of the shape of the protection target portion of the wire bundle W. For example, when the portion to be protected is a straight line, the width dimension may be increased in order to improve work efficiency, and when it is a curved line, the width dimension may be decreased so as to flexibly cope with the shape. Further, the longitudinal dimension of the nonwoven material 20 may be determined empirically or experimentally in consideration of the size (outer shape) of the wire bundle W, the range of the portion to be protected, the number of overlaps, and the like.
  • an adhesive material 40 is attached in advance to the back surfaces of both ends (the surfaces located inside when wound).
  • the nonwoven material 20 may be wound with one end bonded to the outer periphery of the wire bundle W (see FIG. 1).
  • a double-sided pressure-sensitive adhesive tape is employed as the adhesive material 40 and is attached in advance to the back surfaces of both ends of the nonwoven material 20.
  • the electric wire bundle W is a tubular nonwoven material 20. (See FIG. 2).
  • the sheet-like non-woven material 20 is bonded to the outer peripheral surface of the wire bundle W or the outer peripheral portion of the non-woven material 20 that is already wound around the wire bundle W, whereby the electric wire in step (a).
  • the shape wound around the bundle W is held (see step (b), FIG. 2).
  • the double-sided pressure-sensitive adhesive tape as the adhesive material 40 is attached to the other end of the strip-shaped nonwoven material 20.
  • the form of the nonwoven material 20 is hold
  • the adhesive material 40 may be an adhesive tape having an adhesive portion on one side, an adhesive, or the like, and is not limited to being attached in advance, and may be attached at any time during the winding operation.
  • the adhesive material 40 is not limited to being attached to both ends of the nonwoven material 20, and may be attached to a plurality of other portions in the longitudinal direction or the entire back surface.
  • attaching with the adhesive material 40 The nonwoven material 20 may be heated, adhesive resin may be fuse
  • the sheet-like nonwoven material 20 held in the form wound around the wire bundle W in the step (b) is hot-pressed and formed (step (c)).
  • the hot press time, pressure, and the like may be determined experimentally or empirically so that the wire bundle W has hardness according to the specification of the vehicle to which the wire bundle W is routed, the route location, and the like.
  • the adhesive resin soaked in the base fiber is solidified to maintain the form after molding, and the protective part 22 covering the wire bundle W is formed (FIG. 3).
  • the electric wire protection structure 10 can be manufactured through the above steps. And in this electric wire protection structure part 10, the nonwoven material 20 is hard in the state which shifted
  • the branch portion of the wire bundle W can be protected.
  • the non-woven material 20 may be hooked around the crotch portion of each branch line so as to cover the outer periphery of the branch portion, wound and held with an adhesive material, and hot pressed in the held state.
  • the configuration has been described in which the nonwoven material 20 is wound so as to overlap at least twice on the outer periphery of the wire bundle W. However, it is sufficient that the nonwoven material 20 can be wound and covered so as not to expose the portion to be protected. .
  • the nonwoven material 20 is held in a form wound around the wire bundle W, and then the nonwoven material 20 is heated and compressed to be molded. For this reason, the relative movement of the nonwoven material 20 with respect to the wire bundle W can be suppressed, and variations in the form of the nonwoven material 20 covering the wire bundle W can be suppressed.
  • the non-woven material 20 may be wound around the wire bundle W before hot pressing.
  • the electric wire bundle W can be positioned at a position closer to the center with respect to the non-woven material 20 and in the inner and outer directions. Relative movement can be suppressed. As a result, the heat and pressure applied to the wire bundle W during hot pressing become more uniform, and variations in the wire bundle W can be suppressed.
  • the wire bundle W in the protection portion 22 can be reduced. The bias can be suppressed. Thereby, variation in thickness and hardness of the protection part 22 in the circumferential direction can be suppressed, and the same level of protection performance can be obtained at any position, and the protection performance can be improved as a whole.
  • a process (a) and a process (b) are series. It is possible to carry out smoothly in accordance with the flow of work and improve the working efficiency.
  • the protection performance can be improved.
  • the nonwoven material 20 is wound so that it may become substantially uniform thickness in the whole circumferential direction on the outer periphery of the electric wire bundle W, in the electric wire protection structure part 10 manufactured, the electric wire bundle W is the protective part 22.
  • the protective performance can be improved by being located at the approximate center of the.
  • the wire bundle W can be wound flexibly corresponding to the shape of the wire bundle W even at a bent portion or the like, and the wire bundle W can be covered more reliably. Moreover, even when the range of the protection target portion of the wire bundle W is changed, the range covered with the non-woven material 20 can be easily changed by changing the overlap amount (that is, the shift amount).
  • the non-woven material 20 is wound around the wire bundle W while being overlapped by half of the width dimension, it can be efficiently wound around the portion to be protected of the wire bundle W, improving the protection performance and reducing the non-woven material.
  • the amount of the woven material 20 used can be reduced.
  • the wire protection structure 110 is hot-pressed in a state in which a substantially rectangular sheet-like nonwoven material 120 is wound around the wire bundle W in advance and is held in a form covering the wire bundle W.
  • the wire bundle W is covered and formed by the molded protective portion 122 (see FIG. 6).
  • a double-sided adhesive tape as an adhesive material 140 is attached to the back surface of the substantially rectangular sheet-like nonwoven material 120 along both ends (see FIG. 4). Moreover, the width dimension (dimension of the direction along the extension direction of the wire bundle W) of the nonwoven material 120 is set larger than the protection object part.
  • a substantially rectangular sheet-like nonwoven material 120 is wound around the wire bundle W to cover the wire bundle W (step (a)). More specifically, the non-woven material 120 may be attached to the outer peripheral portion of the wire bundle W with one end thereof in a posture along the extending direction of the wire bundle W, and the winding operation may be performed.
  • the non-woven material 120 was wound around the wire bundle W by adhering the other end of the non-woven material 120 to the outer peripheral portion of the already wound portion with the adhesive material 140.
  • the shape is maintained (see step (b), FIG. 5).
  • the non-woven material 120 is wound so as to overlap evenly over the entire circumferential direction of the wire bundle W, as in the first embodiment, and in this embodiment, the winding starts in the circumferential direction. It is preferable that the position and the end position substantially coincide.
  • the nonwoven material 120 held in the form is hot-pressed and molded. Thereby, the overlapping parts of the nonwoven material 120 are bonded to each other by the melted adhesive resin, and the nonwoven material 120 is hardened to form the protective portion 122 (see FIG. 6).
  • the electric wire protection structure 110 can be manufactured through the above steps. And in this electric wire protection structure part 110, the other end part of the nonwoven material 120 is hard in the state which overlapped with the part wound previously in the form along the extension direction of the electric wire bundle W. For this reason, the linear trace T of the other end part of the nonwoven material 120 remains on the surface of the protection part 122. Further, in a cross-sectional view, a spiral trace T from the outer peripheral portion of the wire bundle W toward the outer peripheral surface of the protection portion 122 remains. In FIG. 6, the linear trace T is indicated by a two-dot chain line. In addition, an adhesive material 140 used to hold the nonwoven material 120 is also interposed in the protective portion 122.
  • the wire protection structure 110 since the rectangular sheet-like nonwoven material 120 is used, a wide range of protection target portions can be covered more easily.

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Abstract

This method for producing an electrical wire protecting structure suppresses unevenness in the shape of a thermoplastic material covering a wire bundle. The method for producing an electrical wire protecting structure is provided with: (a) a step for covering a wire bundle by winding a sheet-shaped nonwoven material around the wire bundle; (b) a step for holding the form of having wound around the wire bundle in step (a) by means of adhering the sheet-shaped nonwoven material to the outer periphery of the wire bundle or the outer periphery of the sheet-shaped nonwoven material already wound around the wire bundle; and (c) a step for heating and compressing to mold the sheet-shaped nonwoven material held in the state of being wound around the wire bundle in step (b).

Description

電線保護構造部の製造方法及び電線保護構造部Manufacturing method of electric wire protection structure and electric wire protection structure
　この発明は、電線束を保護する技術に関する。 This invention relates to a technique for protecting a wire bundle.
　特許文献１には、電線束を保護する技術が開示されている。より具体的には、特許文献１では、フラット回路体を熱可塑性材料からなる２枚の被覆体で挟み、プレス成形して、被覆体をフラット回路体に密着させると共に被覆体同士を溶着させて、ワイヤーハーネスを形成している。 Patent Document 1 discloses a technique for protecting a wire bundle. More specifically, in Patent Document 1, a flat circuit body is sandwiched between two covering bodies made of a thermoplastic material, press-molded, the covering body is brought into close contact with the flat circuit body, and the covering bodies are welded together. Forming a wire harness.
特開２００３－１９７０３８号公報Japanese Patent Laid-Open No. 2003-197038
　しかしながら、特許文献１のような方法で電線束を保護する場合、２枚の熱可塑性材料は、互いに且つ電線束に対して相対移動可能な状態であり、プレス成型されて保護部が形成されるまでの間に電線束を覆う形態がばらついてしまう恐れがある。特に、電線が断面視円形、楕円形または矩形等の形状に束ねられている電線束を保護対象とする場合には、電線束を覆う熱可塑性材料の形態がばらつきやすい。 However, when the wire bundle is protected by a method as in Patent Document 1, the two thermoplastic materials are in a state of being movable relative to each other and the wire bundle, and are formed by pressing to form a protective portion. There is a risk that the form of covering the wire bundle will vary in the meantime. In particular, when the electric wire bundle in which the electric wire is bundled in a circular shape, an elliptical shape, or a rectangular shape in cross section is to be protected, the form of the thermoplastic material covering the electric wire bundle tends to vary.
　そこで、本発明は、電線束を覆う熱可塑性材料の形態のばらつきを抑制することを目的とする。 Therefore, an object of the present invention is to suppress variations in the form of the thermoplastic material covering the wire bundle.
　第１の態様に係る電線保護構造部の製造方法は、電線束が保護されている電線保護構造部の製造方法であって、（ａ）シート状の熱可塑性材料を前記電線束に巻きつけて、前記電線束を覆う工程と、（ｂ）前記シート状の熱可塑性材料を、前記電線束の外周部又は既に前記電線束に巻きつけられている前記シート状の熱可塑性材料の外周部に対して接着することにより、前記工程（ａ）で前記電線束に巻きつけた形態に保持する工程と、（ｃ）前記工程（ｂ）で前記電線束に巻きつけた形態に保持した前記シート状の熱可塑性材料を、加熱及び圧縮して成形する工程とを備える。 The manufacturing method of the electric wire protection structure part which concerns on a 1st aspect is a manufacturing method of the electric wire protection structure part by which the electric wire bundle is protected, Comprising: (a) Winding a sheet-like thermoplastic material around the said electric wire bundle The step of covering the wire bundle, and (b) the sheet-like thermoplastic material with respect to the outer periphery of the wire bundle or the outer periphery of the sheet-like thermoplastic material already wound around the wire bundle. The sheet-like shape held in the form wound around the wire bundle in the step (a), and (c) the sheet-like shape held around the wire bundle in the step (b). Forming a thermoplastic material by heating and compression.
　第２の態様に係る電線保護構造部の製造方法は、第１の態様に係る電線保護構造部の製造方法であって、前記工程（ｂ）では、前記シート状の熱可塑性材料に予め付着させた接着材料により、前記シート状の熱可塑性材料を、接着して、前記工程（ａ）で前記電線束に巻きつけた状態に保持する。 The manufacturing method of the electric wire protection structure part according to the second aspect is the manufacturing method of the electric wire protection structure part according to the first aspect, and is attached in advance to the sheet-like thermoplastic material in the step (b). The sheet-like thermoplastic material is bonded with the adhesive material, and is held in the state wound around the wire bundle in the step (a).
　第３の態様に係る電線保護構造部の製造方法は、第１又は第２の態様に係る電線保護構造部の製造方法であって、前記工程（ａ）では、前記シート状の熱可塑性材料を、少なくとも２重に重ねて前記電線束に巻きつけて、前記電線束を覆う。 The manufacturing method of the electric wire protection structure part which concerns on a 3rd aspect is a manufacturing method of the electric wire protection structure part which concerns on a 1st or 2nd aspect, Comprising: In the said process (a), the said sheet-like thermoplastic material is used. The at least two layers are wound around the wire bundle to cover the wire bundle.
　第４の態様に係る電線保護構造部の製造方法は、第１～第３の態様のいずれか一態様に係る電線保護構造部の製造方法であって、前記工程（ａ）では、前記シート状の熱可塑性材料として帯状のものを用いている。 A method for manufacturing an electric wire protection structure according to a fourth aspect is the method for manufacturing an electric wire protection structure according to any one of the first to third aspects, wherein in the step (a), the sheet shape A strip-shaped material is used as the thermoplastic material.
　第５の態様に係る電線保護構造部の製造方法は、第４の態様に係る電線保護構造部の製造方法であって、前記工程（ａ）では、帯状の前記シート状の熱可塑性材料を、幅寸法の半分ずつ重ねつつ前記電線束に巻きつけて、前記電線束を覆う。 The manufacturing method of the electric wire protection structure part according to the fifth aspect is the manufacturing method of the electric wire protection structure part according to the fourth aspect, and in the step (a), the strip-shaped thermoplastic material is The wire bundle is covered by wrapping around the wire bundle while overlapping half of the width dimension.
　第６の態様に係る電線保護構造部の製造方法は、第１～第３の態様のいずれか一態様に係る電線保護構造部の製造方法であって、前記工程（ａ）では、前記シート状の熱可塑性材料として矩形状のものを用いている。 A method for manufacturing an electric wire protection structure according to a sixth aspect is the method for manufacturing an electric wire protection structure according to any one of the first to third aspects, wherein in the step (a), the sheet shape A rectangular material is used as the thermoplastic material.
　第７の態様に係る電線保護構造部は、電線束が保護されている電線保護構造部であって、シート状の熱可塑性材料が、前記電線束の外周部又は既に前記電線束に巻きつけられている前記シート状の熱可塑性材料の外周部に対して接着されることにより、予め前記電線束に巻きつけられた形態に保持された状態で、加熱及び圧縮されて成形されている保護部により、前記電線束が覆われている。 The electric wire protection structure according to the seventh aspect is an electric wire protection structure in which the electric wire bundle is protected, and a sheet-like thermoplastic material is wound around the outer peripheral portion of the electric wire bundle or the electric wire bundle. By a protective part that is molded by being heated and compressed in a state of being held in a form wound around the wire bundle in advance by being adhered to the outer peripheral part of the sheet-like thermoplastic material. The wire bundle is covered.
　第１の態様に係る電線保護構造部の製造方法によると、シート状の熱可塑性材料を、電線束の外周部又は既に電線束に巻きつけられているシート状の熱可塑性材料の外周部に対して接着することにより、熱可塑性材料を電線束に巻きつけた形態に保持してから、当該熱可塑性材料を加熱及び圧縮して成形している。このため、電線束に対する熱可塑性材料の相対移動を抑制し、電線束を覆う熱可塑性材料の形態のばらつきを抑制することができる。 According to the manufacturing method of the electric wire protection structure part according to the first aspect, the sheet-like thermoplastic material is applied to the outer peripheral part of the electric wire bundle or the outer peripheral part of the sheet-like thermoplastic material already wound around the electric wire bundle. The thermoplastic material is held in a form wound around an electric wire bundle, and then the thermoplastic material is heated and compressed to be molded. For this reason, the relative movement of the thermoplastic material with respect to the wire bundle can be suppressed, and variations in the form of the thermoplastic material covering the wire bundle can be suppressed.
　第２の態様に係る電線保護構造部の製造方法によると、シート状の熱可塑性材料に予め付着させた接着材料により、シート状の熱可塑性材料を電線束に巻きつけた形態に保持するため、工程（ａ）と工程（ｂ）とを一連の流れでスムーズに行うことができ、作業効率を向上させることができる。 According to the method for manufacturing the electric wire protection structure according to the second aspect, the adhesive material previously attached to the sheet-like thermoplastic material is used to hold the sheet-like thermoplastic material in a form wound around the electric wire bundle. Step (a) and step (b) can be smoothly performed in a series of flows, and work efficiency can be improved.
　第３の態様に係る電線保護構造部の製造方法によると、シート状の熱可塑性材料を少なくとも２重に重ねて電線束に巻きつけているため、保護性能を向上させることができる。 According to the method for manufacturing the electric wire protection structure portion according to the third aspect, since the sheet-like thermoplastic material is at least doubled and wound around the electric wire bundle, the protection performance can be improved.
　第４の態様に係る電線保護構造部の製造方法によると、帯状のシート状の熱可塑性材料を用いているため、曲げ箇所等でも電線束の形状に柔軟に対応して巻きつけることができ、より確実に電線束を覆うことができる。 According to the method for manufacturing the electric wire protection structure part according to the fourth aspect, because the belt-like sheet-like thermoplastic material is used, it can be wound flexibly corresponding to the shape of the electric wire bundle even at a bent portion, etc. The wire bundle can be covered more reliably.
　第５の態様に係る電線保護構造部の製造方法によると、帯状の熱可塑性材料を幅寸法の半分ずつ重ねつつ電線束に巻きつけるため、電線束の保護対象部分に対して効率よく２重に巻きつけることができ、保護性能を向上させると共に熱可塑性材料の使用量の低減を図ることができる。 According to the method for manufacturing the electric wire protection structure according to the fifth aspect, the belt-shaped thermoplastic material is wound around the electric wire bundle while being overlapped by half of the width dimension, so that it is efficiently doubled with respect to the protection target portion of the electric wire bundle. It can wind, can improve protection performance and can reduce the amount of thermoplastic material used.
　第６の態様に係る電線保護構造部の製造方法によると、矩形状のシート状の熱可塑性材料を用いているため、広い範囲の保護対象部分をより簡単に覆うことができる。 According to the method for manufacturing the electric wire protection structure portion according to the sixth aspect, since the rectangular sheet-like thermoplastic material is used, it is possible to more easily cover the protection target portion in a wide range.
　第７の態様に係る電線保護構造部によると、シート状の熱可塑性材料が、電線束の外周部又は既に電線束に巻きつけられているシート状の熱可塑性材料の外周部に対して接着されることにより、予め電線束に巻きつけられた形態に保持された状態で、加熱及び圧縮されて、電線束の外周を覆う保護部が形成されている。このため、電線束に対する熱可塑性材料の相対移動を抑制し、電線束を覆う熱可塑性材料の形態のばらつきを抑制することができる。 According to the electric wire protection structure portion according to the seventh aspect, the sheet-like thermoplastic material is bonded to the outer peripheral portion of the electric wire bundle or the outer peripheral portion of the sheet-like thermoplastic material already wound around the electric wire bundle. Thus, a protective portion that is heated and compressed and covers the outer periphery of the wire bundle is formed in a state in which the wire bundle is previously wound around the wire bundle. For this reason, the relative movement of the thermoplastic material with respect to the wire bundle can be suppressed, and variations in the form of the thermoplastic material covering the wire bundle can be suppressed.
接着材料が付着された帯状のシート状の不織材料を示す図である。It is a figure which shows the strip | belt-shaped sheet-like nonwoven material to which the adhesive material was adhered. 電線束に帯状のシート状の不織材料を巻きつけた形態を示す図である。It is a figure which shows the form which wound the strip | belt-shaped sheet-like nonwoven material around the electric wire bundle. 第１実施形態に係る電線保護構造部を示す図である。It is a figure which shows the electric wire protection structure part which concerns on 1st Embodiment. 接着材料が付着された矩形状のシート状の不織材料を示す図である。It is a figure which shows the rectangular sheet-like nonwoven material to which the adhesive material was adhered. 電線束に矩形状のシート状の不織材料を巻きつけた形態を示す図である。It is a figure which shows the form which wound the rectangular sheet-like nonwoven material around the electric wire bundle. 第２実施形態に係る電線保護構造部を示す図である。It is a figure which shows the electric wire protection structure part which concerns on 2nd Embodiment.
　以下、実施形態に係る電線保護構造部及び電線保護構造部の製造方法について説明する。この電線保護構造部は、電線束を保護及び形態維持するように熱可塑性樹脂で覆った構成である。 Hereinafter, the manufacturing method of the electric wire protection structure part and electric wire protection structure part which concern on embodiment is demonstrated. This electric wire protection structure part is the structure which covered the electric wire bundle with the thermoplastic resin so that a protection and a form may be maintained.
　電線束としては、車両等に配策されるワイヤーハーネスを構成するものが想定される。この電線束は、複数の電線が互いの径方向（複数方向）に隣接するように重ねられ、断面視略円形、略矩形等に束ねられて構成されている。 The wire bundle is assumed to constitute a wire harness that is routed to a vehicle or the like. This electric wire bundle is configured such that a plurality of electric wires are stacked so as to be adjacent to each other in the radial direction (a plurality of directions), and are bundled into a substantially circular shape, a substantially rectangular shape, or the like in cross section.
　＜第１実施形態＞
　まず、第１実施形態に係る電線保護構造部１０について説明する（図１～図３参照）。電線保護構造部１０は、保護部２２が電線束Ｗの外周を覆った構成である（図３参照）。この保護部２２は、熱可塑性材料が電線束Ｗのうち保護対象部分を覆った状態で加熱及び加圧（すなわち、ホットプレス）されて成形される。なお、電線束Ｗの保護対象部分とは、電線束Ｗのうち、延在方向において、外部との接触から保護したい部分又は配策経路に対応した形態に維持したい部分を含む範囲内の部分を言うものとする。 <First Embodiment>
First, the wire protection structure 10 according to the first embodiment will be described (see FIGS. 1 to 3). The wire protection structure 10 has a configuration in which the protection 22 covers the outer periphery of the wire bundle W (see FIG. 3). The protection portion 22 is molded by being heated and pressurized (that is, hot pressed) in a state where the thermoplastic material covers the portion to be protected in the wire bundle W. The portion to be protected of the wire bundle W is a portion within a range including a portion of the wire bundle W that is desired to be protected from contact with the outside in the extending direction or a portion that is desired to be maintained in a form corresponding to the routing route. Say it.
　なお、ホットプレスとは、加工対象である熱可塑性材料を金型間に挟み込み、金型を加熱した状態で圧力を加えて熱可塑性材料を成型加工することをいう。より具体的には、電線束Ｗの保護対象部分の形状に対応した保護部２２成型用の金型面を有する一対の金型を用いて行われるとよい。すなわち、一方の金型上に電線束Ｗを覆った状態の熱可塑性材料を載置し、一対の金型を加熱しつつ、他方の金型を一方の金型に相対近接移動させることにより熱可塑性材料を成型する。これにより、熱可塑性材料が硬くなった状態の保護部２２により電線束Ｗを覆った電線保護構造部１０を得る。もっとも、金型は、一対の金型に限られず、３以上の分割された金型で形成されてもよい。 Note that hot pressing means that a thermoplastic material to be processed is sandwiched between molds, and the thermoplastic material is molded by applying pressure while the mold is heated. More specifically, it may be performed using a pair of molds having a mold surface for molding the protection part 22 corresponding to the shape of the protection target portion of the wire bundle W. That is, by placing a thermoplastic material covering the wire bundle W on one mold and heating the pair of molds while moving the other mold relatively close to the one mold, Mold plastic material. Thereby, the electric wire protection structure part 10 which covered the electric wire bundle W with the protection part 22 of the state in which the thermoplastic material became hard is obtained. However, the mold is not limited to a pair of molds, and may be formed of three or more divided molds.
　ここで、熱可塑性材料について説明する。熱可塑性材料とは、加熱することにより部分的或いは全体的に溶融し或いは軟らかくなって、冷却されることにより固化する材料である。そして、この熱可塑性材料は、加熱されて溶融した或いは軟らかくなった状態で成形加工されて冷却されることにより、成形された所定の形状を維持することができる。ここでは、熱可塑性材料として、不織材料２０を用いた例で説明する。 Here, the thermoplastic material will be described. The thermoplastic material is a material that is partially or wholly melted or softened by heating and is solidified by cooling. And this thermoplastic material can maintain the shape | molded predetermined shape by being shape | molded and cooled in the state which was heated and fuse | melted or became soft. Here, an example in which the nonwoven material 20 is used as the thermoplastic material will be described.
　不織材料２０としては、加熱工程を経て部分的又は全体的に溶融或いは柔らかくなり、その後冷却工程を経て硬くなることが可能なものを用いることができる。かかる不織材料２０として、基本繊維と接着樹脂（バインダとも呼ばれる）とを含むものを用いることができる。接着樹脂は、基本繊維の融点よりも低い融点を有する樹脂である。そして、不織材料２０を、基本繊維の融点より低く且つ接着樹脂の融点よりも高い温度に加熱することにより、接着樹脂が溶融されて基本繊維間にしみ込む。この後、不織材料２０の温度が低下すると、接着樹脂が凝固する。これにより、不織材料２０を加熱時の成形状態に維持することができる。ここでは、シート状に形成されている不織材料２０（不織布とも呼ばれる）を用いている（図１参照）。 As the nonwoven material 20, a material that can be partially or wholly melted or softened through a heating process and then hardened through a cooling process can be used. As the nonwoven material 20, a material containing 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 20 to a temperature lower than the melting point of the basic fiber and higher than the melting point of the adhesive resin, the adhesive resin is melted and soaks between the basic fibers. Thereafter, when the temperature of the nonwoven material 20 decreases, the adhesive resin solidifies. Thereby, the nonwoven material 20 can be maintained in the molding state during heating. Here, a non-woven material 20 (also called a non-woven fabric) formed in a sheet shape is used (see FIG. 1).
　不織材料２０の基本繊維としては、接着樹脂の融点で繊維状態を保ち得ればよく、樹脂繊維の他、各種繊維を用いることができる。また、接着樹脂は、基本繊維の融点より低い融点を有する熱可塑性樹脂繊維を用いることができる。例えば、基本繊維と接着樹脂との組合せとしては、基本繊維をＰＥＴ（ポリエチレンテレフタレート）の樹脂繊維とし、接着樹脂をＰＥＴとＰＥＩ（ポリエチレンイソフタレート）との共重合樹脂としたものが挙げられる。 As the basic fiber of the non-woven material 20, 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. The adhesive resin may be a thermoplastic resin fiber having a melting point lower than that of the basic fiber. For example, as a combination of a basic fiber and an adhesive resin, a resin fiber of PET (polyethylene terephthalate) may be used as the basic fiber and a copolymer resin of PET and PEI (polyethylene isophthalate) may be used as the adhesive resin.
　以下、電線保護構造部１０について、製造工程を追いつつ説明をする。ここでは、電線束Ｗのうち直線状に配策される部分を保護する例を図示しているが、曲線状に配策される部分についても同様にして電線保護構造部を構成することができる。 Hereinafter, the wire protection structure 10 will be described following the manufacturing process. Here, an example of protecting a portion arranged in a straight line in the wire bundle W is shown, but the wire protection structure can be configured in the same manner for a portion arranged in a curved shape. .
　まず、シート状の不織材料２０を電線束Ｗに巻きつけて、当該電線束Ｗの保護対象部分全体を覆う（工程（ａ））。好ましくは、シート状の不織材料２０を、電線束Ｗの外周部上に少なくとも２重に重なるように巻きつけるとよい。もっとも、電線束Ｗの外周部上の不織材料２０の厚さ（重なり数）は、電線束Ｗが組み込まれる車両の仕様、配策箇所等を考慮して実験的又は経験的に決定されるとよい。なお、電線束Ｗの偏りの観点から言うと、不織材料２０は、電線束Ｗの周方向全体において同じ厚さとなるように巻きつけられることが好ましい。 First, the sheet-like nonwoven material 20 is wound around the wire bundle W to cover the entire protection target portion of the wire bundle W (step (a)). Preferably, the sheet-like nonwoven material 20 is wound around the outer periphery of the wire bundle W so as to overlap at least twice. However, the thickness (number of overlaps) of the non-woven material 20 on the outer peripheral portion of the wire bundle W is determined experimentally or empirically in consideration of the specification of the vehicle in which the wire bundle W is incorporated, the routing location, and the like. Good. In terms of the bias of the wire bundle W, the nonwoven material 20 is preferably wound so as to have the same thickness in the entire circumferential direction of the wire bundle W.
　本実施形態においては、シート状の不織材料２０として帯状のものを用いている。そして、当該帯状のシート状の不織材料２０を、幅寸法の半分ずつ重ねつつ電線束Ｗに巻きつけている。換言すると、不織材料２０を、電線束Ｗの延在方向において、幅寸法の半分ずつずらしつつ電線束Ｗに巻きつけていく。なお、巻き始め及び巻き終わりの部分は、２重に重なるように、不織材料２０を既に巻かれた部分に対して全体的に重ねつつ２周巻きつけるとよい。 In this embodiment, a strip-shaped non-woven material 20 is used. And the said strip | belt-shaped sheet-like nonwoven material 20 is wound around the electric wire bundle W, overlapping each half of the width dimension. In other words, the non-woven material 20 is wound around the wire bundle W while shifting by half the width dimension in the extending direction of the wire bundle W. In addition, it is good to wrap two times, winding the non-woven material 20 over the already wound part as a whole so that the winding start part and the winding end part may overlap twice.
　不織材料２０の幅寸法は、電線束Ｗの保護対象部分の形状等を考慮して経験的又は実験的に決定するとよい。例えば、保護対象部分が直線状の場合は作業効率を向上させるために幅寸法を大きくし、曲線状の場合はその形状により柔軟に対応できるように幅寸法を小さくしてもよい。また、不織材料２０の長手寸法は、電線束Ｗの大きさ（外形形状）、保護対象部分の範囲、重ね数等を考慮して経験的又は実験的に決定されるとよい。 The width of the non-woven material 20 may be determined empirically or experimentally in consideration of the shape of the protection target portion of the wire bundle W. For example, when the portion to be protected is a straight line, the width dimension may be increased in order to improve work efficiency, and when it is a curved line, the width dimension may be decreased so as to flexibly cope with the shape. Further, the longitudinal dimension of the nonwoven material 20 may be determined empirically or experimentally in consideration of the size (outer shape) of the wire bundle W, the range of the portion to be protected, the number of overlaps, and the like.
　ここで、帯状のシート状の不織材料２０には、予め両端部の裏面（巻きつけ時に内側に位置する面）に接着材料４０が付着されている。そして、巻きつけ作業においては、一端部を電線束Ｗの外周部に接着した状態で不織材料２０を巻きつけていくとよい（図１参照）。ここでは、接着材料４０として、両面粘着テープを採用しており、不織材料２０の両端部の裏面に予め付着されている。 Here, in the belt-like sheet-like nonwoven material 20, an adhesive material 40 is attached in advance to the back surfaces of both ends (the surfaces located inside when wound). In the winding operation, the nonwoven material 20 may be wound with one end bonded to the outer periphery of the wire bundle W (see FIG. 1). Here, a double-sided pressure-sensitive adhesive tape is employed as the adhesive material 40 and is attached in advance to the back surfaces of both ends of the nonwoven material 20.
　このように、帯状のシート状の不織材料２０が、電線束Ｗを軸芯として、各部において略同じ厚さで巻きつけられるため、電線束Ｗは、筒状となっている不織材料２０の略中心に位置する（図２参照）。 Thus, since the belt-like sheet-like nonwoven material 20 is wound with substantially the same thickness in each part with the electric wire bundle W as an axis, the electric wire bundle W is a tubular nonwoven material 20. (See FIG. 2).
　次に、シート状の不織材料２０を、電線束Ｗの外周面又は既に電線束Ｗに巻きつけられている不織材料２０の外周部に対して接着することにより、工程（ａ）で電線束Ｗに巻きつけた形態に保持する（工程（ｂ）、図２参照）。ここでは、上述したように、帯状の不織材料２０の他端部に接着材料４０としての両面粘着テープが付着されている。そして、不織材料２０の他端部を、既に巻きつけられている部分の外周部に対して接着する（貼り付ける）ことにより、不織材料２０の形態を保持している。これにより、ホットプレスまでの間に、不織材料２０が電線束Ｗに対して緩んだり外れたりすることを抑制している。もっとも、不織材料２０の他端部は、一端部と同様に、接着材料４０により電線束Ｗの外周面に対して接着されてもよい。 Next, the sheet-like non-woven material 20 is bonded to the outer peripheral surface of the wire bundle W or the outer peripheral portion of the non-woven material 20 that is already wound around the wire bundle W, whereby the electric wire in step (a). The shape wound around the bundle W is held (see step (b), FIG. 2). Here, as described above, the double-sided pressure-sensitive adhesive tape as the adhesive material 40 is attached to the other end of the strip-shaped nonwoven material 20. And the form of the nonwoven material 20 is hold | maintained by adhere | attaching (attaching) the other end part of the nonwoven material 20 with respect to the outer peripheral part of the already wound part. Thereby, it is suppressed that the nonwoven material 20 loosens or remove | deviates with respect to the electric wire bundle W until hot press. But the other end part of the nonwoven material 20 may be adhere | attached with respect to the outer peripheral surface of the electric wire bundle W by the adhesive material 40 similarly to one end part.
　また、接着材料４０は、片面に粘着部を有する粘着テープ、接着剤等でもよく、又、予め付着されている場合に限られず巻きつけ作業の際に随時付着されてもよい。また、接着材料４０は、不織材料２０の両端部に付着される場合に限られず、その他長尺方向複数箇所、又は、裏面全体に付着されていてもよい。また、接着材料４０で接着する場合に限られず、不織材料２０を加熱して接着樹脂を溶融させ、他端部とその重なる部分とを接着してもよい。 Further, the adhesive material 40 may be an adhesive tape having an adhesive portion on one side, an adhesive, or the like, and is not limited to being attached in advance, and may be attached at any time during the winding operation. In addition, the adhesive material 40 is not limited to being attached to both ends of the nonwoven material 20, and may be attached to a plurality of other portions in the longitudinal direction or the entire back surface. Moreover, it is not restricted to adhere | attaching with the adhesive material 40, The nonwoven material 20 may be heated, adhesive resin may be fuse | melted, and an other end part and the part which overlaps may be adhere | attached.
　そして、工程（ｂ）で電線束Ｗに巻きつけた形態に保持したシート状の不織材料２０を、ホットプレスして成形する（工程（ｃ））。ここで、ホットプレスの時間及び圧力等は、電線束Ｗが配策される車両の仕様、配策箇所等に応じた硬さになるように、実験的又は経験的に決定されるとよい。そして、ホットプレスされた当該不織材料２０が冷却されると、基礎繊維にしみ込んだ接着樹脂が凝固して成形後の形態が維持され、電線束Ｗを覆う保護部２２が形成される（図３参照）。なお、ホットプレス後、不織材料の温度が自然に下がるまで待ってもよいし、冷却してもよい。 Then, the sheet-like nonwoven material 20 held in the form wound around the wire bundle W in the step (b) is hot-pressed and formed (step (c)). Here, the hot press time, pressure, and the like may be determined experimentally or empirically so that the wire bundle W has hardness according to the specification of the vehicle to which the wire bundle W is routed, the route location, and the like. Then, when the hot-pressed nonwoven material 20 is cooled, the adhesive resin soaked in the base fiber is solidified to maintain the form after molding, and the protective part 22 covering the wire bundle W is formed (FIG. 3). In addition, after hot pressing, you may wait until the temperature of a nonwoven material falls naturally, and you may cool.
　以上の工程により、電線保護構造部１０を製造することができる。そして、この電線保護構造部１０では、不織材料２０が電線束Ｗの外周上で延在方向に互いにずれて重なり合った状態で硬くなっている。このため、保護部２２の表面には、長尺帯状の不織材料２０の側端部の螺旋線状の痕跡Ｔが残っている。また、保護部２２の端部には、電線束Ｗの外周部から保護部２２の外周面に向かう渦巻線状の痕跡Ｔも残っている。なお、図３では、線状の痕跡Ｔを２点鎖線で示している。また、不織材料２０を保持するために用いた接着材料４０も保護部２２内に介在している。 The electric wire protection structure 10 can be manufactured through the above steps. And in this electric wire protection structure part 10, the nonwoven material 20 is hard in the state which shifted | deviated and overlapped in the extending direction on the outer periphery of the electric wire bundle W. FIG. For this reason, on the surface of the protection part 22, the spiral trace T of the side edge part of the elongate strip-like nonwoven material 20 remains. In addition, a spiral trace T from the outer peripheral portion of the wire bundle W toward the outer peripheral surface of the protective portion 22 remains at the end of the protective portion 22. In addition, in FIG. 3, the linear trace T is shown with the dashed-two dotted line. In addition, an adhesive material 40 used to hold the nonwoven material 20 is also interposed in the protective portion 22.
　また、本実施形態に係る製造方法によれば、電線束Ｗの分岐部分も保護することができる。例えば、不織材料２０を、分岐部分の外周を覆うように各分岐線の股部分に引掛けて巻きつけて接着材料等により保持しておき、保持した状態でホットプレスするとよい。 Moreover, according to the manufacturing method according to the present embodiment, the branch portion of the wire bundle W can be protected. For example, the non-woven material 20 may be hooked around the crotch portion of each branch line so as to cover the outer periphery of the branch portion, wound and held with an adhesive material, and hot pressed in the held state.
　これまで、不織材料２０を電線束Ｗの外周上に少なくとも２重に重ねるように巻きつける構成について説明してきたが、最低限、保護対象部分を露出させないように巻きつけて覆うことができればよい。 So far, the configuration has been described in which the nonwoven material 20 is wound so as to overlap at least twice on the outer periphery of the wire bundle W. However, it is sufficient that the nonwoven material 20 can be wound and covered so as not to expose the portion to be protected. .
　上記の電線保護構造部１０及びその製造方法によると、不織材料２０を電線束Ｗに巻きつけた形態に保持してから、当該不織材料２０を加熱及び圧縮して成形する。このため、電線束Ｗに対する不織材料２０の相対移動を抑制し、電線束Ｗを覆う不織材料２０の形態のバラツキを抑制することができる。また、ホットプレス前に、電線束Ｗに不織材料２０を巻きつけた形態のまま置いておくこともできる。 According to the wire protection structure 10 and the manufacturing method thereof, the nonwoven material 20 is held in a form wound around the wire bundle W, and then the nonwoven material 20 is heated and compressed to be molded. For this reason, the relative movement of the nonwoven material 20 with respect to the wire bundle W can be suppressed, and variations in the form of the nonwoven material 20 covering the wire bundle W can be suppressed. In addition, the non-woven material 20 may be wound around the wire bundle W before hot pressing.
　また、シート状の不織材料２０を電線束Ｗに巻きつけて当該電線束Ｗを覆っているため、電線束Ｗを不織材料２０に対してより中心に近い位置に位置決めできると共に内外方向における相対移動を抑制できる。これにより、ホットプレスの際に電線束Ｗに加わる熱及び圧力がより均等になり、電線束Ｗのばらつきも抑制でき、製造される電線保護構造部１０において、保護部２２内における電線束Ｗの偏りを抑制することができる。これにより、周方向において保護部２２の厚薄及び硬さのばらつきを抑制し、どの位置においても同程度の保護性能を得ることができ、全体として保護性能を向上させることができる。 Moreover, since the sheet-like nonwoven material 20 is wound around the electric wire bundle W to cover the electric wire bundle W, the electric wire bundle W can be positioned at a position closer to the center with respect to the non-woven material 20 and in the inner and outer directions. Relative movement can be suppressed. As a result, the heat and pressure applied to the wire bundle W during hot pressing become more uniform, and variations in the wire bundle W can be suppressed. In the manufactured wire protection structure 10, the wire bundle W in the protection portion 22 can be reduced. The bias can be suppressed. Thereby, variation in thickness and hardness of the protection part 22 in the circumferential direction can be suppressed, and the same level of protection performance can be obtained at any position, and the protection performance can be improved as a whole.
　また、不織材料２０に予め付着させた接着材料４０により接着して、当該不織材料２０を電線束Ｗに巻きつけた形態に保持するため、工程（ａ）と工程（ｂ）とを一連の流れでスムーズに行うことができ、作業効率を向上させることができる。 Moreover, in order to adhere | attach with the adhesive material 40 previously adhered to the nonwoven material 20, and hold | maintain the said nonwoven material 20 in the form wound around the wire bundle W, a process (a) and a process (b) are series. It is possible to carry out smoothly in accordance with the flow of work and improve the working efficiency.
　また、不織材料２０を少なくとも２重に重ねて電線束Ｗに巻きつけているため、保護性能を向上させることができる。そして、不織材料２０を、電線束Ｗの外周上で周方向全体において略均一な厚さとなるように巻きつけているため、製造される電線保護構造部１０において、電線束Ｗが保護部２２の略中心に位置して保護性能を向上させることができる。 In addition, since the nonwoven material 20 is at least doubled and wound around the wire bundle W, the protection performance can be improved. And since the nonwoven material 20 is wound so that it may become substantially uniform thickness in the whole circumferential direction on the outer periphery of the electric wire bundle W, in the electric wire protection structure part 10 manufactured, the electric wire bundle W is the protective part 22. The protective performance can be improved by being located at the approximate center of the.
　また、帯状のシート状の不織材料２０を用いているため、曲げ箇所等でも電線束Ｗの形状に柔軟に対応して巻きつけることができ、より確実に当該電線束Ｗを覆うことができる。また、電線束Ｗの保護対象部分の範囲が変更される場合でも、重ね量（すなわち、ずらし量）を変えることにより、不織材料２０を巻きつけて覆う範囲を容易に変更することができる。 Moreover, since the belt-shaped sheet-like non-woven material 20 is used, the wire bundle W can be wound flexibly corresponding to the shape of the wire bundle W even at a bent portion or the like, and the wire bundle W can be covered more reliably. . Moreover, even when the range of the protection target portion of the wire bundle W is changed, the range covered with the non-woven material 20 can be easily changed by changing the overlap amount (that is, the shift amount).
　また、不織材料２０を幅寸法の半分ずつ重ねつつ電線束Ｗに巻きつけるため、電線束Ｗの保護対象部分に対して効率よく２重に巻きつけることができ、保護性能を向上させると共に不織材料２０の使用量の低減を図ることができる。 Further, since the non-woven material 20 is wound around the wire bundle W while being overlapped by half of the width dimension, it can be efficiently wound around the portion to be protected of the wire bundle W, improving the protection performance and reducing the non-woven material. The amount of the woven material 20 used can be reduced.
　＜第２実施形態＞
　次に、第２実施形態に係る電線保護構造部１１０について説明する（図４～図６参照）。なお、第１実施形態に係る電線保護構造部１０と同様の構成部分については同一の符号を付すと共に説明を省略する。 <Second Embodiment>
Next, the wire protection structure 110 according to the second embodiment will be described (see FIGS. 4 to 6). In addition, about the component similar to the electric wire protection structure part 10 which concerns on 1st Embodiment, while attaching | subjecting the same code | symbol, description is abbreviate | omitted.
　この電線保護構造部１１０は、略矩形状のシート状の不織材料１２０が、予め電線束Ｗに巻きつけられて、当該電線束Ｗを覆った形態に保持された状態で、ホットプレスされて成形されている保護部１２２により、当該電線束Ｗが覆われて構成されている（図６参照）。 The wire protection structure 110 is hot-pressed in a state in which a substantially rectangular sheet-like nonwoven material 120 is wound around the wire bundle W in advance and is held in a form covering the wire bundle W. The wire bundle W is covered and formed by the molded protective portion 122 (see FIG. 6).
　当該略矩形状のシート状の不織材料１２０の裏面には、両端部に沿って接着材料１４０としての両面粘着テープが付着されているものとする（図４参照）。また、不織材料１２０の幅寸法（電線束Ｗの延在方向に沿う方向の寸法）は、保護対象部分より大きく設定されている。 It is assumed that a double-sided adhesive tape as an adhesive material 140 is attached to the back surface of the substantially rectangular sheet-like nonwoven material 120 along both ends (see FIG. 4). Moreover, the width dimension (dimension of the direction along the extension direction of the wire bundle W) of the nonwoven material 120 is set larger than the protection object part.
　まず、略矩形状のシート状の不織材料１２０を電線束Ｗに巻きつけて、当該電線束Ｗを覆う（工程（ａ））。より具体的には、不織材料１２０を、一端部を電線束Ｗの延在方向に沿う姿勢で電線束Ｗの外周部に貼り付け、巻きつけ作業が行われるとよい。 First, a substantially rectangular sheet-like nonwoven material 120 is wound around the wire bundle W to cover the wire bundle W (step (a)). More specifically, the non-woven material 120 may be attached to the outer peripheral portion of the wire bundle W with one end thereof in a posture along the extending direction of the wire bundle W, and the winding operation may be performed.
　そして、不織材料１２０の他端部を、接着材料１４０により、既に巻かれている部分の外周部に対して貼り付けて接着することにより、不織材料１２０を電線束Ｗに巻きつけられた形態に保持する（工程（ｂ）、図５参照）。ここで、不織材料１２０は、第１実施形態と同様に電線束Ｗの周方向全体で均一に２重に重なるように巻きつけられることが好ましく、本実施形態では、周方向において巻きつけ開始位置と終了位置とが略一致していることが好ましい。 Then, the non-woven material 120 was wound around the wire bundle W by adhering the other end of the non-woven material 120 to the outer peripheral portion of the already wound portion with the adhesive material 140. The shape is maintained (see step (b), FIG. 5). Here, it is preferable that the non-woven material 120 is wound so as to overlap evenly over the entire circumferential direction of the wire bundle W, as in the first embodiment, and in this embodiment, the winding starts in the circumferential direction. It is preferable that the position and the end position substantially coincide.
　巻きつけ形態に保持した後、当該形態に保持されている不織材料１２０を、ホットプレスして成形する。これにより、不織材料１２０は溶けた接着樹脂により重なった部分同士が接着され、不織材料１２０が硬くなって保護部１２２が形成される（図６参照）。 After holding in the wound form, the nonwoven material 120 held in the form is hot-pressed and molded. Thereby, the overlapping parts of the nonwoven material 120 are bonded to each other by the melted adhesive resin, and the nonwoven material 120 is hardened to form the protective portion 122 (see FIG. 6).
　以上の工程により、電線保護構造部１１０を製造することができる。そして、この電線保護構造部１１０では、不織材料１２０の他端部が、電線束Ｗの延在方向に沿う形態で先に巻かれた部分に重なった状態で硬くなっている。このため、保護部１２２の表面には、不織材料１２０の他端部の線状の痕跡Ｔが残っている。また、断面視において、電線束Ｗの外周部から保護部１２２の外周面に向かう渦巻線状の痕跡Ｔも残っている。なお、図６では、線状の痕跡Ｔを２点鎖線で示している。また、不織材料１２０を保持するために用いた接着材料１４０も保護部１２２内に介在している。 The electric wire protection structure 110 can be manufactured through the above steps. And in this electric wire protection structure part 110, the other end part of the nonwoven material 120 is hard in the state which overlapped with the part wound previously in the form along the extension direction of the electric wire bundle W. For this reason, the linear trace T of the other end part of the nonwoven material 120 remains on the surface of the protection part 122. Further, in a cross-sectional view, a spiral trace T from the outer peripheral portion of the wire bundle W toward the outer peripheral surface of the protection portion 122 remains. In FIG. 6, the linear trace T is indicated by a two-dot chain line. In addition, an adhesive material 140 used to hold the nonwoven material 120 is also interposed in the protective portion 122.
　上記電線保護構造部１１０及びその製造方法によると、矩形状のシート状の不織材料１２０を用いているため、広い範囲の保護対象部分をより簡単に覆うことができる。 According to the wire protection structure 110 and the manufacturing method thereof, since the rectangular sheet-like nonwoven material 120 is used, a wide range of protection target portions can be covered more easily.
　以上のように、電線保護構造部の製造方法及び電線保護構造部１０、１１０は詳細に説明されたが、上記した説明は、全ての局面において例示であって、この発明がそれに限定されるものではない。また、上述した各種変形例は、相互に矛盾しない限り組み合わせて適用可能である。そして、例示されていない無数の変形例が、この発明の範囲から外れることなく想定され得るものと解される。 As mentioned above, although the manufacturing method of the electric wire protection structure part and the electric wire protection structure parts 10 and 110 were demonstrated in detail, above-described description is an illustration in all the aspects, Comprising: This invention is limited to it is not. The various modifications described above can be applied in combination as long as they do not contradict each other. And it is understood that the countless modification which is not illustrated can be assumed without deviating from the scope of the present invention.
　１０、１１０　電線保護構造部
　２０、１２０　不織材料
　２２、１２２　保護部
　４０、１４０　接着材料
　Ｗ　電線束 10, 110 Electric wire protection structure 20, 120 Non-woven material 22, 122 Protection part 40, 140 Adhesive material W Electric wire bundle

Claims (7)

  1. 　電線束が保護されている電線保護構造部の製造方法であって、
    　（ａ）シート状の熱可塑性材料を前記電線束に巻きつけて、前記電線束を覆う工程と、
    　（ｂ）前記シート状の熱可塑性材料を、前記電線束の外周部又は既に前記電線束に巻きつけられている前記シート状の熱可塑性材料の外周部に対して接着することにより、前記工程（ａ）で前記電線束に巻きつけた形態に保持する工程と、
    　（ｃ）前記工程（ｂ）で前記電線束に巻きつけた形態に保持した前記シート状の熱可塑性材料を、加熱及び圧縮して成形する工程と、
    　を備える、電線保護構造部の製造方法。     A method of manufacturing an electric wire protection structure in which an electric wire bundle is protected,
    (A) winding a sheet-like thermoplastic material around the wire bundle and covering the wire bundle;
    (B) Adhering the sheet-like thermoplastic material to the outer periphery of the wire bundle or the outer periphery of the sheet-like thermoplastic material already wound around the wire bundle, holding in the form wound around the wire bundle in a);
    (C) a step of heating and compressing and molding the sheet-like thermoplastic material held in the form wound around the wire bundle in the step (b);
    The manufacturing method of the electric wire protection structure part provided with.
  2. 　請求項１に記載の電線保護構造部の製造方法であって、
    　前記工程（ｂ）では、前記シート状の熱可塑性材料に予め付着させた接着材料により、前記シート状の熱可塑性材料を、接着して、前記工程（ａ）で前記電線束に巻きつけた状態に保持する、電線保護構造部の製造方法。     It is a manufacturing method of the electric wire protection structure part according to claim 1,
    In the step (b), the sheet-like thermoplastic material is bonded with an adhesive material previously attached to the sheet-like thermoplastic material, and is wound around the wire bundle in the step (a). The manufacturing method of the electric wire protection structure part hold | maintained.
  3. 　請求項１に記載の電線保護構造部の製造方法であって、
    　前記工程（ａ）では、前記シート状の熱可塑性材料を、少なくとも２重に重ねて前記電線束に巻きつけて、前記電線束を覆う、電線保護構造部の製造方法。     It is a manufacturing method of the electric wire protection structure part according to claim 1,
    In the step (a), the sheet-like thermoplastic material is wrapped around the wire bundle at least twice and covered with the wire bundle, thereby covering the wire bundle.
  4. 　請求項１に記載の電線保護構造部の製造方法であって、
    　前記工程（ａ）では、前記シート状の熱可塑性材料として帯状のものを用いている、電線保護構造部の製造方法。     It is a manufacturing method of the electric wire protection structure part according to claim 1,
    In the step (a), a method for manufacturing an electric wire protection structure portion using a strip-like material as the sheet-like thermoplastic material.
  5. 　請求項４に記載の電線保護構造部の製造方法であって、
    　前記工程（ａ）では、帯状の前記シート状の熱可塑性材料を、幅寸法の半分ずつ重ねつつ前記電線束に巻きつけて、前記電線束を覆う、電線保護構造部の製造方法。     It is a manufacturing method of the electric wire protection structure part according to claim 4,
    In the step (a), a method for manufacturing an electric wire protection structure, wherein the sheet-like thermoplastic material is wound around the electric wire bundle while being overlapped by half of the width dimension to cover the electric wire bundle.
  6. 　請求項１に記載の電線保護構造部の製造方法であって、
    　前記工程（ａ）では、前記シート状の熱可塑性材料として矩形状のものを用いている、電線保護構造部の製造方法。     It is a manufacturing method of the electric wire protection structure part according to claim 1,
    In the step (a), a method for manufacturing an electric wire protection structure, wherein a rectangular material is used as the sheet-like thermoplastic material.
  7. 　電線束が保護されている電線保護構造部であって、
    　シート状の熱可塑性材料が、前記電線束の外周部又は既に前記電線束に巻きつけられている前記シート状の熱可塑性材料の外周部に対して接着されることにより、予め前記電線束に巻きつけられた形態に保持された状態で、加熱及び圧縮されて成形されている保護部により、前記電線束が覆われている、電線保護構造部。     A wire protection structure part in which the wire bundle is protected,
    The sheet-like thermoplastic material is preliminarily wound around the wire bundle by being adhered to the outer periphery of the wire bundle or the outer periphery of the sheet-like thermoplastic material already wound around the wire bundle. The electric wire protection structure part in which the said wire bundle is covered with the protection part currently shape | molded by being heated and compressed in the state hold | maintained to the attached form.
PCT/JP2012/055508 2012-03-05 2012-03-05 Method for producing electrical wire protecting structure and electrical wire protecting structure WO2013132570A1 (en)

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Cited By (4)

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EP3499664A1 (en) * 2017-12-14 2019-06-19 tesa SE Rigid cable harness with a curable sleeve and method for forming such cable harness
US11466177B2 (en) 2019-02-08 2022-10-11 Tesa Se Moisture-curable adhesive tape and method for jacketing elongated items, especially leads
US11680189B2 (en) 2019-02-08 2023-06-20 Tesa Se Thermally softenable adhesive tape and method for jacketing elongated items, especially leads
US11965121B2 (en) 2019-02-08 2024-04-23 Tesa Se UV-curable adhesive tape and method for jacketing elongated items, especially leads

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JP2011223743A (en) * 2010-04-09 2011-11-04 Sumitomo Wiring Syst Ltd Electric wire protector
JP2012039782A (en) * 2010-08-09 2012-02-23 Auto Network Gijutsu Kenkyusho:Kk Wire protective structure part and manufacturing method of wire protective structure part

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JP2011223743A (en) * 2010-04-09 2011-11-04 Sumitomo Wiring Syst Ltd Electric wire protector
JP2012039782A (en) * 2010-08-09 2012-02-23 Auto Network Gijutsu Kenkyusho:Kk Wire protective structure part and manufacturing method of wire protective structure part

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3499664A1 (en) * 2017-12-14 2019-06-19 tesa SE Rigid cable harness with a curable sleeve and method for forming such cable harness
CN109994288A (en) * 2017-12-14 2019-07-09 德莎欧洲股份公司 Rigid armored cable is formed with curable sheath
US11081261B2 (en) 2017-12-14 2021-08-03 Tesa Se Forming a rigid cable harness with a curable sleeve
EP4397545A3 (en) * 2017-12-14 2024-09-25 Tesa Se Rigid cable harness with a curable sleeve and method for forming such cable harness
US11466177B2 (en) 2019-02-08 2022-10-11 Tesa Se Moisture-curable adhesive tape and method for jacketing elongated items, especially leads
US11680189B2 (en) 2019-02-08 2023-06-20 Tesa Se Thermally softenable adhesive tape and method for jacketing elongated items, especially leads
US11965121B2 (en) 2019-02-08 2024-04-23 Tesa Se UV-curable adhesive tape and method for jacketing elongated items, especially leads

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