JP2015135762A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily provide a wire harness provided with a terminal-fitted wire and a mold part, in which the part broken into an insulated coating is hard to be formed at a mold part.SOLUTION: Provided is a wire harness 1 comprising: an insulating wire 9; a terminal fitting 8; a cylindrically formed protective member 7 adhered to the outer circumferential face of the coating edge part 92 of the insulating wire 9 and over the whole circumference by uniting a plurality of pre-molded unit molded parts 70; and a mold part 6 formed by insert molding.

Description

  The present invention relates to a wire harness having a water stop structure at a connection portion between an insulated wire and a terminal fitting.

  In a vehicle such as an automobile, a wire harness includes an electric wire with a terminal having an insulated wire that conducts electricity and a terminal fitting connected to an end of the insulated wire. The terminal fitting is generally a metal member mainly composed of copper.

  In an electric wire with a terminal mounted on a vehicle, a core wire exposed from an insulating coating portion of an insulated wire is connected to a connected portion which is a part of a terminal fitting by welding such as crimping or ultrasonic welding.

  By the way, in the electric wire with terminal, when liquid enters the connecting portion between the core wire of the insulated wire and the terminal fitting, the connecting portion is corroded. In particular, when the core wire of the insulated wire is an aluminum wire, corrosion due to dissimilar metal contact corrosion occurs.

  Then, in order to prevent the corrosion of the connection part of the core wire of an insulated wire and a terminal metal fitting, the wire harness provided with the mold part as shown, for example in patent document 1 and patent document 2 is proposed. The mold part also serves to prevent liquid from entering the device by closing the gap between the insulated wire and the housing at the opening of the housing that houses the device to which the insulated wire is connected. The mold part is a synthetic resin member obtained by injection molding.

  The wire harness shown by patent document 1 is equipped with the mold part which sealed the water stop area | region ranging from the connection part of the core wire of an insulated wire and a terminal metal fitting in a terminal-attached electric wire to a part of edge part of an insulated wire. In this case, the connection portion between the insulated wire and the terminal fitting is water-stopped by the mold portion, and corrosion is prevented.

  The mold part of the wire harness as shown in Patent Document 1 is made by insert molding using a mold for molding the mold part and an injection device for injecting molten synthetic resin into the mold.

  The mold is generally composed of an upper mold and a lower mold. The upper mold and the lower mold are supported so that one or both of them can approach and be separated while facing each other. In the mold mold in which the upper mold and the lower mold are closest to each other, the first accommodation space in which the part other than the water stop area in the terminal fitting is accommodated, and the water stop area part of the electric wire with terminal are accommodated. And a third accommodation space in which a portion other than the water stop region at the end of the insulated wire is accommodated in that order.

  The injection device is a device for injecting molten synthetic resin into the second housing space of the mold. The molded part of the wire harness is formed by solidification of the synthetic resin injected into the second housing space in a state where the water stop region of the terminal-equipped electric wire is housed in the second housing space of the mold. Is done.

  Hereinafter, in the mold part of the wire harness, a part formed at the boundary part with the third accommodation space in the second accommodation space of the mold is referred to as a rear end.

  On the other hand, the wire harness shown in Patent Document 2 includes a first mold portion that seals an area extending from a connection portion between a core wire of an insulated wire and a terminal fitting in a terminal-attached wire to a coated end portion of the insulated wire, and the insulated wire. A second mold part interposed between the covering end part and the end part of the first mold part; The second mold part is an elastomer member.

JP 2002-315130 A International Publication No. 2011/019027

  By the way, when the conditions of the bending specification of an insulated wire are severe, it is necessary to employ an insulated wire having a softer and thinner insulation coating. For example, there are cases where it is necessary to bend an insulated wire with a particularly large curvature when attached to a vehicle, or when the frequency of bending deformation of the insulated wire is particularly high.

  On the other hand, when the insulation coating of the insulated wire is made of a material softer than a general coating material, when the mold part as described above is formed by insert molding, the inner edge of the rear end of the mold part is It tends to become a shape that bites into the insulation coating of insulated wires. When such an insulated wire with a mold part is used under conditions of strict bending specifications, the possibility that the biting part of the mold part damages the soft and thin insulation coating cannot be denied.

  The same applies to the inner edge portion of the rear end of the second mold portion in the wire harness disclosed in Patent Document 2.

  Moreover, in manufacture of the wire harness shown by patent document 2, it is necessary to mold twice about a 1st mold part and a 2nd mold part. In this case, after molding the second mold part, it takes time-consuming work such as once taking out the wire harness from the mold for molding the second mold part and transferring it to the mold for molding the first mold part. . Performing such a laborious work is contrary to the demand for cost reduction and lead time reduction.

  The present invention simply provides a wire harness provided with a terminal-attached electric wire and a mold part, for example, even if the insulation coating is particularly soft, etc. The purpose is to be able to.

  The wire harness which concerns on a 1st aspect is provided with an insulated wire, a terminal metal fitting, a protection member, and a mold part. The said insulated wire has the insulation coating which covers a core wire and its circumference | surroundings. The said terminal metal fitting has the to-be-connected part to which the said core wire of the contact part which can be connected with another member, and the edge part of the said insulated wire was connected. The said protection member is formed in the cylinder shape closely_contact | adhered to the outer peripheral surface of the edge part of the said insulation coating of the said insulated wire over the perimeter by uniting the several unit shaping | molding part shape | molded previously. The mold portion is formed by insert molding in a range from a portion between the contact portion of the terminal metal fitting and the connected portion of the insulated wire, the terminal metal fitting, and the protection member to an outer peripheral surface of the protection member. ing.

  The wire harness according to the second aspect is an aspect of the wire harness according to the first aspect. The wire harness which concerns on a 2nd aspect WHEREIN: The surface ranging from the end surface on the opposite side with respect to the said terminal metal fitting side in the said protection member to the inner surface of the said protection member is a convex curved surface.

  In each of the above aspects, the molding portion is molded in a state where the protective member is in close contact with the outer peripheral surface of the end portion of the insulating coating of the insulated wire over the entire circumference. That is, the molding of the mold part is performed in a state where the protective member is interposed between the inner edge part of the rear end of the mold part and the insulating coating of the insulated wire. In this case, the inner edge of the rear end of the mold part is not easily formed into a shape that bites into the insulating coating.

  Moreover, in the manufacturing process of the wire harness in each aspect described above, it is not necessary to perform molding a plurality of times. In this case, it is not necessary to perform a time-consuming work of transferring from one mold to another.

  According to each aspect described above, it is possible to easily provide a wire harness in which a portion that bites into the insulating coating is less likely to be formed in the mold portion. Thereby, for example, even when an insulated wire having a soft and thin insulation coating is used under severe bending conditions such as being bent with a large curvature near the mold portion, the durability of the wire harness can be improved. .

  Moreover, in said 2nd aspect, the surface ranging from the end surface on the opposite side with respect to the terminal metal fitting side in a protection member to the inner surface of a protection member is a convex curved surface. In this case, an angular portion is not formed in a portion that may come into contact when the insulated wire at the inner edge portion of the rear end portion of the protective member is bent with a large curvature. In addition, the insulated wire can be easily bent along the curved surface of the protection member. In addition, the rear-end part of a protection member is an edge part on the opposite side with respect to the terminal metal fitting side of the protection member in a wire harness.

It is a top view of the principal part of the wire harness 1 which concerns on 1st Embodiment. 2 is a cross-sectional view of a main part of the wire harness 1. FIG. It is the front view and top view of a protection member which constitute wire harness 1. It is the side view and top view of the unit shaping | molding part which comprise a protection member. 1 is a cross-sectional view of a mold used for manufacturing a wire harness 1. FIG. 3 is a schematic perspective view showing a part of the manufacturing process of the wire harness 1. FIG. 4 is a cross-sectional view illustrating a part of the process of manufacturing the wire harness 1. FIG. It is a top view of wire harness 1A concerning a 2nd embodiment. It is sectional drawing showing the one part process in the manufacturing process of the wire harness 1 containing the protection member which concerns on an application example.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention. In the present specification, the term “wire harness” is used as a term for convenience, including a case where only one insulated wire is included and a case where a plurality of insulated wires are included. In addition, you may call the wire harness in this specification a wire with a mold part, or an electric wire module.

<First Embodiment>
First, the configuration of the wire harness 1 according to the first embodiment will be described with reference to FIGS. The wire harness 1 includes an insulated wire 9, a terminal fitting 8, a protective member 7, and a mold part 6. The wire harness 1 is mounted on a vehicle such as an automobile.

  FIG. 1 is a plan view of an end portion of the wire harness 1. FIG. 2 is a cross-sectional view of the wire harness 1 in the II-II plane of FIG. 3A and 3B are a front view and a side view of the protective member 7, respectively. FIGS. 4A and 4B are a side view and a plan view of the unit molding portion 70 that constitutes the protection member 7, respectively.

<Insulated wire>
As shown in FIGS. 1 and 2, the insulated wire 9 to which the terminal fitting 8 is attached includes a core wire 910 that is a long conductor, and an insulation coating 920 that is an insulator covering the periphery of the core wire 910, It is an electric wire which has. In general, the core wire 910 is a stranded wire in which a plurality of strands made of thin conductors are twisted together. However, it is also conceivable that the core wire 910 is a single wire.

  The end portion of the insulated wire 9 to which the terminal fitting 8 is attached is in a state in which the insulation coating 920 has been peeled from the periphery of the core wire 910 of a certain length in advance, that is, the core wire 910 of a certain length is removed from the insulation coating 920. Processed in an extended state.

  Hereinafter, the core wire 910 extending from the end of the insulation coating 920 at the end portion of the insulated wire 9 is referred to as a bare wire portion 91. In addition, a portion in a certain range (a range having a length of about several millimeters to several tens of millimeters) of the end portion of the insulating coating 920 of the insulated wire 9 is referred to as a covering end portion 92.

  In the wire harness 1, the core wire 910 of the insulated wire 9 is, for example, a metal wire having copper as a main component. On the other hand, the insulation coating 920 of the insulated wire 9 is a synthetic resin member mainly composed of, for example, polyethylene, vinyl chloride, or polyamide-based nylon. It is also conceivable that the core wire 910 is a metal wire mainly composed of aluminum.

<Terminal fitting>
As shown in FIGS. 1 and 2, the terminal fitting 8 has a contact portion 81 and a connected portion 82.

  The contact part 81 is a part connectable with other members. In the present embodiment, for example, a connection hole 810 through which a screw for fixing a terminal fitting 8 such as a terminal fixing base to a connection partner is passed is formed in the contact portion 81.

  The connected portion 82 is a portion to which the bare wire portion 91 extending from the covered end portion 92 of the insulated wire 9 is connected.

  In the present embodiment, the connected portion 82 includes a bottom plate portion 821 and two core wire caulking portions 822. That is, this embodiment is an example in the case where the connected portion 82 is connected to the insulated wire 9 by crimping.

  The connected portion 82 is a plate-like portion that is bent before being crimped to the insulated wire 9, and forms a groove into which the bare wire portion 91 of the insulated wire 9 is inserted.

  The bottom plate portion 821 is a portion that supports the bare wire portion 91 in the insulated wire 9 to which the terminal fitting 8 is attached from one side. The bottom plate part 821 is connected to the contact part 81.

  The two core wire caulking portions 822 are portions formed so as to rise from the bottom plate portion 821 to both sides of the bare wire portion 91. In addition, the to-be-connected part 82 in this embodiment is a butting type in which the two core wire crimping parts 822 do not overlap. However, it is also conceivable that the connected portion 82 is an overlapped type in which two core wire caulking portions 822 are overlapped and caulked to the bare wire portion 91, or a closed barrel type formed in a cylindrical shape.

  In the wire harness 1, the insulated wire 9 is inserted inside a groove formed by the connected portion 82. Then, the upright two core wire caulking portions 822 are bent along the periphery of the bare wire portion 91, bent in a direction facing the bottom plate portion 821, and caulked to the bare wire portion 91. Thereby, the connected portion 82 is pressure-bonded to the bare wire portion 91.

  The terminal fitting 8 is obtained by bending a metal plate material. Moreover, the metal plate material which comprises the terminal metal fitting 8 is obtained by the punching process with respect to the plate-shaped metal base material in which plating was formed. Accordingly, the metal plate constituting the terminal fitting 8 is constituted by a base material and plating formed on the surface of the base material.

  For example, the base material of the terminal fitting 8 is a member made of a metal material whose main component is copper, such as copper or a copper alloy. In this case, the entire terminal fitting 8 including plating is made of a metal material mainly composed of copper. On the other hand, the plating is a member made of a metal material mainly composed of tin, such as tin (Sn) or tin alloy in which silver (Ag), copper (Cu), bismuth (Bi) or the like is added to tin. Silver (Ag) plating or nickel (Ni) plating is also conceivable.

<Protective member>
The protective member 7 shown in FIGS. 1 to 3 is formed into a cylindrical shape that closely adheres to the outer peripheral surface of the covering end portion 92 of the insulated wire 9 by combining a plurality of unit molded portions 70 that have been molded in advance. It is a formed member. This embodiment is an example in the case where the protective member 7 is a member formed in a cylindrical shape by combining two unit molded portions 70 that are molded in advance.

  In the present embodiment, as shown in FIGS. 1 and 2, the end of the protective member 7 on the terminal fitting 8 side (hereinafter referred to as the tip 171) is gradually formed narrower toward the terminal fitting 8 side. .

  Moreover, in this embodiment, the recessed part 173 is cyclically | annularly formed in the intermediate position between the front-end | tip part 171 and the rear-end part 172 of the other side in the protection member 7 over the perimeter.

  Furthermore, in this embodiment, the rear end side inner surface 174 extending from the end surface of the protective member 7 opposite to the terminal fitting 8 side, that is, the end surface on the rear end 172 side, to the inner surface of the protective member 7 is: It is a convex curved surface. The example shown in FIG. 2 is an example where the rear end side inner surface 174 is a convex smooth curved surface.

  In the present embodiment, the inner diameter of the protective member 7 is slightly smaller than the outer diameter of the insulated wire 9 in order to increase the water stoppage between the insulated wire 9 and the protective member 7. As such a case, for example, the case where the inner diameter of the protective member 7 is larger than the outer diameter of the core wire 910 of the insulated wire 9 and smaller than the outer diameter of the insulating coating 920 of the insulated wire 9 can be considered. Thereby, the insulating coating 920 is compressed, and the insulating coating 920 and the protection member 7 are more closely adhered to each other by the elastic force of the insulating coating 920.

<Protective member: Unit molding part>
In this embodiment, the unit molding part 70 which comprises the protection member 7 is a semi-cylindrical member. As shown in FIG. 4, the unit molding part 70 has a connecting part 75 that is connected to the mating unit molding part 70.

  The present embodiment is an example in the case where the connecting portion 75 includes a protruding portion 751 and a fitting hole portion 752. The protruding portion 751 can be fitted into the fitting hole 752 in the unit molding portion 70 on the other side. The fitting hole 752 can be fitted with the protrusion 751 in the unit molding part 70 on the other side. In the present embodiment, each of the protrusion 751 and the fitting hole 752 is formed in the unit molding portion 70 so that a line connecting the two protrusions 751 and a line connecting the two fitting holes 752 intersect each other. Yes. Accordingly, in the present embodiment, the unit molded portions 70 having the same shape and connected to each other constitute the protective member 7.

  The unit molding part 70 which comprises the protection member 7 is a member made from a synthetic resin, for example.

<Mold part>
The mold part 6 shown in FIGS. 1 and 2 extends from the portion between the contact part 81 and the connected part 82 of the terminal fitting 8 in the insulated wire 9, the terminal fitting 8 and the protection member 7 to the outer peripheral surface of the protection member 7. It is a part formed by insert molding in the range. In the present embodiment, the mold portion 6 is formed from the portion between the contact portion 81 of the terminal fitting 8 and the connected portion 82 of the insulated wire 9, the terminal fitting 8 and the protection member 7 to the middle portion of the protection member 7. Formed in the range.

  In the wire harness 1, the mold portion 6 is, for example, on the inner surface of the end portion on the contact portion 81 side of the terminal fitting 8 with respect to the outer surface of the portion between the contact portion 81 and the connected portion 82 in the terminal fitting 8. Close to the entire circumference.

  Further, in the wire harness 1, the mold portion 6 is, for example, the outer surface (outer periphery) of the protective member 7 on the inner surface of the end portion (hereinafter, the rear end portion 60) opposite to the contact portion 81 side of the terminal fitting 8. Surface) over the entire circumference. Therefore, liquid can be prevented from entering the connecting portion between the bare wire portion 91 of the insulated wire 9 and the connected portion 82 of the terminal fitting 8.

  In the wire harness 1, the mold part 6 fills the groove formed by the recess 173 formed in the protective member 7. Thereby, it is prevented that the protective member 7 comes off from the mold part 6.

  The mold part 6 is a synthetic resin member. The synthetic resin constituting the mold part 6 is, for example, a PPS (polyphenylene sulfide) resin, a PPA (polyphthalamide) resin, an LCP resin (liquid crystal polymer), a phenol-based, polyester-based, polyamide-based, or epoxy-based resin. .

  The molding process of the mold part 6 will be described later.

<Wire harness manufacturing process>
Next, the process for manufacturing the wire harness 1 is demonstrated, referring FIGS. FIG. 5 is a cross-sectional view of the mold 5 used for insert molding of the mold part 6 in the production of the wire harness 1. FIG. 6 is a view showing a part of the manufacturing process of the wire harness 1 and is a perspective view showing a state in which the protective member 7 is attached to the insulated wire 9. FIG. 7 is a diagram illustrating a part of the manufacturing process of the wire harness 1. In the manufacturing process of the wire harness 1, the mold 5, the insulated wire 9, the terminal fitting 8, and the protection during the insert molding of the mold part 6. FIG. 6 is a cross-sectional view of the member 7.

<Manufacturing process of wire harness: mold>
First, the metal mold | die 5 used for manufacture of the wire harness 1 in this embodiment is demonstrated. The mold 5 is an example of a mold member used in manufacturing the wire harness 1. The mold 5 includes an upper mold 51 and a lower mold 52 as shown in FIG. The upper mold 51 and the lower mold 52 are supported by a support mechanism (not shown) so that one or both of them can approach and be separated from each other.

  Hereinafter, the insulated wire 9 in a state where the terminal fitting 8 is connected to the bare wire portion 91 and the protection member 7 is in close contact with the outer peripheral surface of the covering end portion 92 over the entire circumference, that is, the terminal fitting 8 and the protection member 7 are provided. The insulated wire 9 having the terminal is referred to as a terminal-attached wire 90.

  As shown in FIG. 5, in the mold 5 in a state where the upper mold 51 and the lower mold 52 are closest, the first accommodation space 501 in which the terminal-attached electric wire 90 is accommodated, the second accommodation space 502, and A third accommodation space 503 is formed.

  As shown in FIG. 5, the upper mold 51 is formed with a first molding part 511, a second molding part 512, and a third molding part 513. Similarly, the lower mold 52 is also formed with a first molding part 521, a second molding part 522, and a third molding part 523.

  In a state where the upper mold 51 and the lower mold 52 are closest, the space surrounded by the first molding part 511 in the upper mold 51 and the first molding part 521 in the lower mold 52 is a terminal of the electric wire 90 with terminal. A part of the metal fitting 8 other than the area where the mold part 6 is molded, that is, a part from the part between the contact part 81 and the connected part 82 of the terminal metal part 8 to the tip part of the contact part 81 is accommodated. One accommodation space 501 is formed.

  Further, in a state where the upper mold 51 and the lower mold 52 are closest to each other, a space surrounded by the second molded portion 512 in the upper mold 51 and the second molded portion 522 in the lower mold 52 is a wire 90 with a terminal. A second accommodating space 502 is formed in which a portion corresponding to a range from a portion between the contact portion 81 of the terminal fitting 8 and the connected portion 82 to an intermediate portion of the protective member 7 is accommodated.

  Further, in a state where the upper mold 51 and the lower mold 52 are closest to each other, the space surrounded by the third molded portion 513 in the upper mold 51 and the third molded portion 523 in the lower mold 52 is the electric wire 90 with terminal. A part of the insulated wire 9 and a part of the protective member 7 of the terminal-attached electric wire 90 other than the area where the molded portion 6 is formed, that is, an intermediate part of the protective member 7 is opposite to the terminal fitting 8 side of the protective member 7. A third accommodation space 503 is formed in which a portion up to the end on the side is accommodated.

<Wire harness manufacturing process: protective member mounting process>
Next, with reference to FIG. 6, a mounting process for the covering end portion 92 of the insulated wire 9 of the protection member 7 in the wire harness 1 is described.

  As shown in FIG. 6, the two unit molded portions 70 are brought closer to each other from the state where the connecting portions 75 of the two unit molded portions 70 face each other with the insulated wire 9 interposed therebetween. Eventually, the projections 751 of each of the two unit molded portions 70 are fitted into the fitting hole portions 752 of the counterpart unit molded portion 70, whereby the two unit molded portions 70 are connected. Thereby, the two unit molding parts 70 are attached to the covering end 92 of the insulated wire 9. The two unit molding portions 70 attached to the covered end portion 92 of the insulated wire 9 constitute the protective member 7 that is in close contact with the outer peripheral surface of the covered end portion 92 of the insulated wire 9 over the entire circumference.

  The mounting process of the protective member 7 may be performed before the terminal fitting 8 is connected to the bare wire portion 91 of the insulated wire 9 or after the terminal fitting 8 is connected to the bare wire portion 91 of the insulated wire 9. It may be done. Therefore, in this embodiment, it becomes possible to give freedom to the order of the manufacturing process of the wire harness 1. In addition, if the terminal metal fitting 8 is connected to the bare wire part 91 of the insulated wire 9, the electric wire 90 with a terminal will be obtained by this attachment process.

<Wire harness manufacturing process: Mold part forming process>
Next, the molding process of the mold part 6 in the wire harness 1 will be described with reference to FIG.

  The molding process of the mold part 6 is performed after the mounting process of the protective member 7. In addition, when the attachment process of the protection member 7 was performed before the process of connecting the terminal metal fitting 8 to the bare wire part 91 of the insulated wire 9, the molding process of the mold part 6 and the attachment process of the protection member 7 are performed. In the meantime, the connection process (crimping process) of the terminal fitting 8 to the insulated wire 9 is performed.

  In the molding process of the mold part 6, for example, after the terminal-attached electric wire 90 is set in the lower mold 52, the upper mold 51 is brought close to the lower mold 52 in a state of facing the lower mold 52. Thereby, the electric wire 90 with a terminal is accommodated in the 1st accommodation space 501, the 2nd accommodation space 502, and the 3rd accommodation space 503 which the metal mold | die 5 forms.

  In the state where the terminal-attached electric wire 90 is accommodated in the first accommodation space 501, the second accommodation space 502, and the third accommodation space 503 of the mold 5, the synthetic resin melted by an unillustrated injection device is the second accommodation space. Injected into 502. At this time, if the distal end portion 171 of the protective member 7 is gradually formed to be thinner toward the terminal fitting 8 side, the synthetic resin in the vicinity of the distal end portion 171 of the protective member 7 is better circulated.

  When the synthetic resin injected into the second housing space 502 is solidified, the portion of the terminal-equipped electric wire 90 that is accommodated in the second housing space 502 of the mold 5, that is, the contact point of the terminal fitting 8 in the terminal-equipped electric wire 90. The mold part 6 is formed without a gap around the part corresponding to the range from the part between the part 81 and the connected part 82 to the intermediate part of the protective member 7.

  The protective member 7 prevents the synthetic resin melted at the boundary portion between the second housing space 502 and the third housing space 503 from forming into the insulating coating 920 side of the insulated wire 9 when the mold portion 6 is molded. That is, according to the present embodiment, the protective member 7 covering the insulating coating 920 can be harder than the insulating coating 920 when the mold portion 6 is molded. As such a combination of the insulating coating 920 and the protective member 7, for example, the material of the insulating coating 920 is a synthetic resin of crosslinked PE (polyester) and elastomer, and the material of the protective member 7 is PBT (polybutylene terephthalate). PPS (polyphenylene sulfide) resin, PPA (polyphthalamide) resin, LCP resin (liquid crystal polymer), phenol-based, polyester-based, polyamide-based or epoxy-based resin may be considered.

<Effect>
In the present embodiment, insert molding of the mold part 6 is performed in a state where the protective member 7 is in close contact with the outer peripheral surface of the covered end portion 92 of the insulated wire 9 over the entire circumference. That is, the protective member is provided between the inner edge portion of the rear end portion 60 of the mold portion 6 and the insulating coating 920 of the insulated wire 9 formed at the boundary portion between the second housing space 502 of the mold 5 and the third housing space 503. Insert molding of the mold part 6 is performed in a state where 7 is interposed. In this case, the degree to which the inner edge portion of the rear end portion 60 of the mold portion 6 bites into the insulating coating 920 of the insulated wire 9 is alleviated. That is, a portion that bites into the insulating coating 920 is not easily formed in the mold portion 6.

  Moreover, in the manufacturing process of the wire harness 1 in this embodiment, it is not necessary to perform molding multiple times. In this case, it is not necessary to perform a time-consuming work of transferring from one mold to another.

  As described above, in the wire harness 1 in the present embodiment, it is possible to easily prevent the portion that bites into the insulating coating 920 from being formed in the mold portion 6. Thereby, for example, even when the insulated wire 9 having the soft and thin insulation coating 920 is used under severe bending conditions such as being bent with a large curvature in the vicinity of the mold portion 6, the highly durable wire harness 1 is provided. Can be provided.

  Moreover, in this embodiment, the rear end side inner surface 174 in the protection member 7 is a convex curved surface. In this case, an angular portion is not formed in a portion that may come into contact when the insulated wire 9 at the inner edge portion of the rear end portion 172 of the protection member 7 is bent with a large curvature. In addition, the insulated wire 9 can be easily bent along the rear end side inner surface 174 of the protective member 7.

Second Embodiment
Next, the configuration of the wire harness 1A according to the second embodiment will be described with reference to FIG. FIG. 8 is a plan view of an end portion of the wire harness 1A according to the second embodiment. The wire harness 1 </ b> A is different from the wire harness 1 in that it includes a plurality of terminal-attached electric wires 90. In FIG. 8, the same components as those shown in FIGS. 1 to 7 are given the same reference numerals.

  Hereinafter, a different point from the wire harness 1 in the wire harness 1A will be described.

  As shown in FIG. 8, the wire harness 1 </ b> A includes a plurality of terminal-attached electric wires 90. This embodiment is an example of the case where the wire harness 1A includes three electric wires 90 with a terminal.

  The wire harness 1A is manufactured using, for example, a mold similar to that shown in FIG. In the wire harness 1A, the mold portion 6 collectively covers the range from the portion between the contact portion 81 of the terminal fitting 8 and the connected portion 82 to the protection member 7 in each of the plurality of electric wires 90 with terminals arranged in parallel. ing.

  Further, a hole may be formed on the outer surface of the unit molding portion 70. Moreover, the through-hole which penetrated to the inner surface of the unit shaping | molding part 70 may be sufficient as the hole formed in the unit shaping | molding part 70. FIG.

<Application example>
Next, the configuration of the protective member 7Z according to an application example applicable to the wire harness 1 will be described with reference to FIG. FIG. 9 is a cross-sectional view of the mold 5, the insulated wire 9, the terminal fitting 8, and the protection member 7 </ b> Z at the time of insert molding of the mold part 6 in the manufacturing process of the wire harness 1. The protection member 7Z is different from the protection member 7 in that a hole is formed on the outer surface of the unit molding portion 70Z constituting the protection member 7Z. In FIG. 9, the same components as those shown in FIGS. 1 to 8 are given the same reference numerals.

  Hereinafter, differences from the protective member 7 in the protective member 7Z will be described.

  In the present embodiment, a hole 700Z is formed on the outer surface of the unit molding part 70Z constituting the protective member 7Z. In the example shown in FIG. 9, the hole 700Z formed in the unit molding part 70Z is a through-hole penetrating to the inner surface of the unit molding part 70Z. However, there may be a case where the hole 700Z is a recess that does not penetrate to the inner surface of the unit molding portion 70Z.

  In the present embodiment, the projection part formed in the third molding part 523 of the lower mold 52 as shown in FIG. 9 is put in the hole 700Z formed in the unit molding part 70Z, thereby the mold part 6 The positioning of the protective member 7Z with respect to the lower mold 52 in the molding process can be easily performed.

<Other application examples>
The protective member 7Z may be applied to the wire harness 1A.

  Moreover, a part of the connection part 75 in the plurality of unit molded parts 70 may be replaced with a joint part that connects two adjacent unit molded parts 70 so as to be relatively rotatable. For example, the joint portion is a portion having flexibility, and the two unit molding portions 70 adjacent to each other rotate relatively by being deformed. The same applies to the unit molding part 70Z.

  Moreover, the case where the position of the one end by the side of the rear-end part 60 side of the mold part 6 and the position of the one end of the protection member 7 correspond is also considered.

  Further, the connected portion 82 of the terminal fitting 8 may further have a coating crimping portion that is crimped to the insulating coating 920 of the insulated wire 9. Moreover, the terminal metal fitting 8 may be connected to the insulated wire 9 by welding such as ultrasonic welding.

  Further, the protective member 7 may be a member formed in a cylindrical shape by combining three or more unit molded portions 70. The same applies to the protective member 7Z.

  In addition, the wire harness according to the present invention can be freely combined with each embodiment, application example, and other application examples shown above, or each embodiment, application within the scope of the invention described in each claim. Examples and other application examples can be appropriately modified or partially omitted.

DESCRIPTION OF SYMBOLS 1 Wire harness 171 Front-end | tip part 172 Rear-end part 173 Recessed part 174 Rear-end side inner surface 1A Wire harness 5 Mold 501 First accommodation space 502 Second accommodation space 503 Third accommodation space 51 Upper mold 511 First molding part 512 First Two molding parts 513 Third molding part 52 Lower mold 521 First molding part 522 Second molding part 523 Third molding part 6 Mold part 60 Rear end part 7 Protection member 7Z Protection member 70 Unit molding part 70Z Unit molding part 700Z hole Portion 75 Connection portion 751 Projection portion 752 Fitting hole portion 8 Terminal fitting 81 Contact portion 810 Connection hole 82 Connected portion 821 Bottom plate portion 822 Core wire caulking portion 9 Insulated wire 90 Terminal wire 91 Bare wire portion 910 Core wire 92 Covered end portion 920 Insulation coating

Claims (2)

An insulated wire having an insulation coating covering the core wire and its periphery, a contact portion connectable to other members, and a terminal fitting having a connected portion to which the core wire at the end of the insulated wire is connected;
A protective member formed in a cylindrical shape that closely adheres to the outer peripheral surface of the end portion of the insulating coating of the insulated wire by joining a plurality of unit molded portions formed in advance,
A mold portion formed by insert molding in a range from a portion between the contact portion and the connected portion of the terminal fitting in the insulated wire, the terminal fitting and the protection member to an outer peripheral surface of the protection member; Wire harness comprising The wire harness according to claim 1,
The wire harness in which the surface ranging from the end surface on the opposite side to the terminal fitting side in the protection member to the inner surface of the protection member is a convex curved surface.

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