JP2014204485A - Wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to easily attach an electric wire protective member that has an electromagnetic shield function, in a wiring harness including a plurality of electric wire groups requiring an individual electromagnetic shield.SOLUTION: In a wiring harness 1, an electric wire protective member 2 comprises a series of members having a lamination structure including an insulation layer 31 made of synthetic resin and the conductive layer 32 of a conductive member. The electric wire protective member 2 covers the peripheries of a plurality of insulation electric wires 91, 92, and 93 by being wound around the insulation electric wires 91, 92, and 93 while the insulation layer 31 forms an outer covering and the insulation electric wires 91, 92, and 93 are separated into two or more groups.

Description

  The present invention relates to a wire harness including an electric wire protection member having an electromagnetic shielding function.

  A wire harness mounted on a vehicle such as an automobile may include an electric wire protection member made of a hard synthetic resin attached to an electric wire.

  For example, as disclosed in Patent Document 1, a conventional general electric wire protection member includes a main body member that forms a groove into which an electric wire is inserted, and a lid member that is combined with the main body member to block the opening of the groove in the main body member. It is comprised by.

  Moreover, when an electromagnetic shield is required in a wire harness, a shielded electric wire may be used. For example, the shielded wire includes an insulated wire, a drain wire made of a conducting wire (bare wire), and a shield coating that bundles the insulated wire and the drain wire. This shield coating has a laminated structure of a metal foil forming an inner layer in contact with a drain line and a synthetic resin outer layer forming a non-conductive outer layer. The drain line is connected to a reference potential point such as a metal frame of the vehicle.

  Moreover, when an electromagnetic shield is required, as shown in Patent Document 2, a cylindrical braided wire that covers the periphery of an electric wire may be used. The braided wire is connected to a reference potential point via a metal housing or the like.

  On the other hand, the wire harness shown in Patent Document 3 includes an insulated wire, a drain wire, and a wire protection member that bundles the insulated wire and the drain wire. This electric wire protection member has two metal foils and two synthetic resin sheets.

  In the wire harness shown in Patent Document 3, two metal foils are stacked with an insulated wire and a drain wire interposed therebetween. Furthermore, the two synthetic resin sheets are formed into a shape covering the two metal foils by vacuum forming. In the wire harness disclosed in Patent Document 3, the drain line is connected to a reference potential point such as a metal frame of a vehicle.

Japanese Utility Model Publication No. 6-60236 JP 2006-344398 A JP 2012-164451 A

  By the way, in a vehicle wiring harness, an electric wire group may be classified into a plurality of groups in terms of electromagnetic shielding. For example, the wire group is connected to a group of high-voltage power system wire groups connected to an inverter circuit of a hybrid vehicle, a group of low-voltage power system wire groups connected to a slide door drive motor, and audio equipment. It is classified into a group of signal wires. Such a group of wires needs to be individually electromagnetically shielded for each group.

  Conventionally, when the electromagnetic shield of the electric wire group is individually provided for each of two or more groups, an electric wire protection member having an electromagnetic shield function is provided for each group of insulated wires. Therefore, the man-hour required for attachment of the wire protection member increases in proportion to the number of groups of insulated wires.

  However, in recent years, in a wire harness of a vehicle, when an electromagnetic shield of an electric wire group is individually required for each group, it is required to easily attach an electric wire protection member having an electromagnetic shield function.

  An object of the present invention is to enable easy attachment of an electric wire protection member having an electromagnetic shield function in a wire harness including a plurality of groups of electric wires that require individual electromagnetic shields.

  The wire harness which concerns on a 1st aspect is provided with a some insulated wire and the electric wire protection member which covers the circumference | surroundings of the some insulated wire. The electric wire protection member includes a series of members having a laminated structure including an insulating layer of synthetic resin and a conductive layer of a conductive member. The wire protection member is wound around the plurality of insulated wires in a state in which the insulating layer forms an exterior and the plurality of the insulated wires are divided into two or more groups. Cover the surroundings.

  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 said insulating layer of the said electric wire protection member contains the layer of the synthetic resin hardened | cured after being wound around the said insulated wire.

  The wire harness according to the third aspect is an aspect of the wire harness according to the second aspect. The wire harness which concerns on a 3rd aspect WHEREIN: The said insulating layer in the said wire protection member consists of a nonwoven fabric of a synthetic resin, and the part which the said nonwoven fabric hardened | cured by thermoforming is included.

  The wire harness according to the fourth aspect is an aspect of the wire harness according to any one of the first aspect to the third aspect. In the wire harness according to the fourth aspect, the wire protection member is wound around the three or more insulated wires in a state where the three or more insulated wires are divided into three groups.

  In the wire harness according to each of the above aspects, the wire protection member including the conductive layer has an electromagnetic shielding function. And a series of electric wire protection members have the structure wound around the some insulated wire in the state which partitions off the some insulated wire into two or more groups. In this case, regardless of the number of groups of insulated wires, the man-hours required for attaching the wire protection member are almost the same. That is, the wire protection member can be easily attached regardless of the number of groups of insulated wires.

  Moreover, in said 2nd aspect, the insulating layer of an electric wire protection member contains the layer of the synthetic resin hardened | cured after being wound around the insulated wire. Such a hardened portion of the insulating layer also functions to maintain the insulated wire in a shape along a predetermined path (path regulation function).

  Moreover, in said 3rd aspect, the nonwoven fabric of a synthetic resin is employ | adopted as an insulating layer of an electric wire protection member. In this case, due to the cushioning properties of the nonwoven fabric, the wire protection member can be prevented from coming into contact with surrounding objects and generating abnormal noise.

  Furthermore, when a synthetic resin nonwoven fabric is employed as the insulating layer, only a part of the insulating layer can be cured, and the insulating layer can be cured with different hardness for each part. Therefore, it is possible to easily provide an electric wire protection member having different hardness depending on the required specification. For example, it is possible to make the specific part other than the hard wrapping part and the overhanging part in the electric wire protection member soft and easy to bend.

  By the way, as will be described later, a wire harness of an electric vehicle such as a hybrid vehicle or an electric vehicle may include three types of insulated wires having different electromagnetic shield requirement specifications. Therefore, the 4th mode containing the electric wire protection member which partitions off three or more insulated electric wires into three groups is suitable for application to an electric vehicle.

1 is a perspective view of a wire harness 1 according to a first embodiment of the present invention. 1 is a front view of a wire harness 1. FIG. 2 is an exploded plan view of the wire harness 1. FIG. It is a top view of the wire harness 1 attached along the straight line. It is a top view of the wire harness 1 attached along the curve. It is a perspective view of wire harness 1A concerning a 2nd embodiment of the present invention. It is a top view of wire harness 1B concerning a 3rd embodiment of the present invention. It is a front view of the wire harness 1 attached to the support body by the clamping structure.

  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. The wire harness according to each embodiment shown below is adopted when protection of an electric wire and electromagnetic shielding are necessary, and is attached to a vehicle.

<First Embodiment>
First, the configuration of the wire harness 1 according to the first embodiment of the present invention will be described with reference to FIGS. The wire harness 1 includes a wire group 90 including a plurality of insulated wires and a wire protection member 2 surrounding the wire group 90.

<Wire group>
The insulated wires 91 to 93 constituting the wire group 90 are constituted by a core wire made of a conductive material and an insulation coating made of a non-conductive material covering the periphery of the core wire. The electric wire group 90 in the present embodiment is classified into three types, a first insulated wire 91, a second insulated wire 92, and a third insulated wire 93, each having different electromagnetic shield requirement specifications.

  In the example shown in FIGS. 1 to 3, the first insulated wire 91, the second insulated wire 92, and the third insulated wire 93 each include a plurality of insulated wires. However, it is also conceivable that at least one of the first insulated wire 91, the second insulated wire 92, and the third insulated wire 93 is constituted by one insulated wire.

  In the example shown in FIGS. 1 and 3, the metal terminal 81 is connected to the ends of the first insulated wire 91 and the second insulated wire 92. A connector 82 is connected to the end of the third insulated wire 93.

  The first insulated wire 91 is, for example, a high voltage AC power insulated wire. The first insulated wire 91 tends to be a noise source for the other two types of insulated wires. Therefore, it is desirable that the first insulated wire 91 is shielded by electromagnetic enemies between the other two types of insulated wires.

  The second insulated wire 92 is, for example, a power insulated wire that transmits AC power having a lower voltage than the transmission power of the first insulated wire 91. The second insulated wire 92 is susceptible to noise from the first insulated wire 91 and is likely to be a noise source for the third insulated wire 93. Therefore, it is desirable that the second insulated wire 92 be shielded by electromagnetic enemies between the other two types of insulated wires.

  The third insulated wire 93 is, for example, a signal-based insulated wire that transmits a signal of an audio device. The third insulated wire 93 is susceptible to noise from the other two types of insulated wires. Therefore, it is desirable that the third insulated wire 93 be shielded by electromagnetic enemies between the other two types of insulated wires.

<Wire protection member>
The electric wire protection member 2 is obtained by applying a predetermined curing process after the sheet material 3 as a base is wound around the electric wire group 90. The sheet material 3 has a laminated structure including an insulating layer 31 of a synthetic resin and a conductive layer 32 of a conductive member. Therefore, the electric wire protection member 2 also has a laminated structure including the insulating layer 31 of synthetic resin and the conductive layer 32 of the conductive member. The wire protection member 2 covers the periphery of the wire group 90 by being wound around the wire group 90 with the insulating layer 31 forming an exterior.

  As shown in FIG. 3, the sheet material 3 includes a rectangular base portion 301 and a tongue piece portion 302 extending laterally from the base portion 301. The base 301 is a part wound around the insulated wires 91 to 93. On the other hand, the tongue piece 302 is a portion that is not wound around the insulated wires 91 to 93.

  The insulating layer 31 of the sheet material 3 is originally in the form of a flexible sheet, but is cured by performing a predetermined curing process. The insulating layer 31 in this embodiment is a synthetic resin nonwoven fabric.

  Here, the nonwoven fabric will be described. The non-woven fabric employed as the insulating layer 31 includes, for example, intertwined basic fibers and an adhesive resin called a binder. The adhesive resin is a thermoplastic resin having a melting point lower than the melting point of the basic fiber (for example, a melting point of about 110 [° C.] to about 150 [° C.]). Such a nonwoven fabric is heated to a temperature lower than the melting point of the basic fiber and higher than the melting point of the adhesive resin, so that the adhesive resin melts and melts into the gaps of the basic fibers. Thereafter, when the temperature of the nonwoven fabric is lowered to a temperature lower than the melting point of the adhesive resin, the adhesive resin is cured in a state in which the basic fibers existing around are bonded. Thereby, the shape of a nonwoven fabric becomes harder than the state before a heating, and is maintained with the shape shape | molded by the mold at the time of a heating.

  The adhesive resin is, for example, a granular resin or a fibrous resin. It is also conceivable that the adhesive resin is formed so as to cover the periphery of the core fiber. As described above, the fiber having a structure in which the core fiber is coated with the adhesive resin is referred to as a binder fiber. As the material of the core fiber, for example, the same material as the basic fiber is adopted.

  In addition, the basic fiber only needs to maintain the fiber state at the melting point of the adhesive resin, and various fibers can be employed in addition to the resin fiber. In addition, as the adhesive resin, for example, a thermoplastic resin fiber having a melting point lower than that of the basic fiber is employed. As a combination of the basic fiber constituting the nonwoven fabric and the adhesive resin, for example, a resin fiber mainly composed of PET (polyethylene terephthalate) is adopted as a basic fiber, and a copolymer resin of PET and PEI (polyethylene isophthalate) is bonded. It may be adopted as a resin. In such a nonwoven fabric, the melting point of the basic fiber is approximately 250 [° C.], and the melting point of the adhesive resin is a temperature between about 110 [° C.] and about 150 [° C.].

  The nonwoven fabric containing the adhesive resin is heated in a state of being in close contact with another member containing the thermoplastic resin, so that the heated portion is welded to the other member.

  The nonwoven fabric can be formed by hot press molding. Hot press molding is forming the nonwoven fabric into the shape of the inner surface of the heating body by heating the nonwoven fabric while sandwiching and pressing the nonwoven fabric to be processed between heating bodies such as a mold.

  In a hot press molding, when the nonwoven fabric is heated to a temperature within the range of about 110 [° C.] to about 250 [° C.] in the mold and then cooled, the adhesive resin melts and the surrounding basic fibers are removed. In order to couple | bond together, it shape | molds in the shape along the inner surface of a formwork, and the surface which contacted the heating body hardens | cures.

  A member in which a nonwoven fabric is cured by hot press molding has a certain degree of flexibility, but the hardness that maintains a certain shape is reinforced compared to the nonwoven fabric before hot press molding is performed. The Hot press molding is an example of heat molding.

  The conductive layer 32 of the sheet material 3 is made of a flexible conductor. For example, the conductive layer 32 is a metal foil such as an aluminum foil. It is also conceivable that the conductive layer 32 is a metal cloth or the like.

  For convenience, in FIG. 2, the conductive layer 32 is exaggerated with a relatively large thickness. However, the difference in thickness between the insulating layer 31 and the conductive layer 32 is usually larger than the difference in thickness grasped from FIG.

  The metal cloth is a metal thread fabric. The metal cloth is, for example, a cloth having a network structure in which metal threads mainly composed of copper are woven so as to intersect each other in the vertical and horizontal directions. The metal cloth has conductivity and flexibility. The metal cloth may have a structure in which a flexible film made of a resin material is attached to a metal yarn cloth.

  In the sheet material 3, the insulating layer 31 and the conductive layer 32 are joined in an overlapping state. For example, it is conceivable that the insulating layer 31 and the conductive layer 32 are bonded with an adhesive. In this case, the adhesive layer is formed between the insulating layer 31 and the conductive layer 32. It is also conceivable that the insulating layer 31 and the conductive layer 32 are joined by welding of the insulating layer 31. In the following description, description of the adhesive layer is omitted.

  The electric wire protection member 2 includes a winding part 20 and an overhang part 23. The winding part 20 is a part wound around the wire group 90. The winding part 20 in this embodiment includes a hard winding part 21 and a soft winding part 22.

<Wound part of wire protection member>
The winding part 20 is wound around the insulated wires 91 to 93 in a state in which the one side 30 along the extending direction of the insulated wires 91 to 93 is located inside the other portions. The base portion 301 of the sheet material 3 becomes the winding portion 20 by being wound around the insulated wires 91 to 93.

  2, the winding part 20 of this embodiment is wound around the electric wire group 90 in the state which partitions the some insulated wires 91-93 into two or more groups. In the example shown in FIG. 2, the winding portion 20 is wound around the wire group 90 in a state where the wire group 90 is divided into three groups of a first insulated wire 91, a second insulated wire 92, and a third insulated wire 93. .

  That is, the first partial region from one side 30 in the base portion 301 of the sheet material 3 is wound around the first insulated wire 91. Further, the second partial region connected to the first partial region in the base 301 is wound around the second insulated wire 92 outside the first partial region. Furthermore, the third partial region that is continuous with the second partial region in the base 301 is wound around the third insulated wire 93 outside the second partial region. Thereby, the 1st insulated wire 91, the 2nd insulated wire 92, and the 3rd insulated wire 93 are partitioned off by the winding part 20. FIG.

  And the hard winding part 21 consists of the 1st part 311 of the insulating layer 31 hardened | cured after being wound around the insulated wires 91-93, and the 1st part 321 of the conductive layer 32 laminated | stacked on the 1st part 311 of the insulating layer 31. . On the other hand, the soft wrapping portion 22 is a portion that is not cured, or at least hardened in a state of higher flexibility than the hard wrapping portion 21.

  When the insulating layer 31 is a non-woven fabric, for example, a portion where heat molding (hot press molding) using a mold is performed becomes the hard winding portion 21, and a portion other than that becomes the soft winding portion 22. Alternatively, the portion that is heat-formed (hot press-molded) while being compressed at a higher pressure becomes the hard wrapping portion 21, and the portion that is heat-formed while being compressed at a lower pressure becomes the soft wrapping portion 22. Accordingly, the soft winding portion 22 is thicker than the hard winding portion 21.

  The insulating layer 31 of the winding part 20 forms an exterior of the winding part 20. That is, in the winding part 20, the conductive layer 32 forms the surface on the side facing the insulated wires 91 to 93, and the insulating layer 31 forms the opposite surface. Note that the insulating layer 31 of the winding portion 20 includes the first portion 311 of the insulating layer 31.

  In the example shown in FIG. 1, the hard wrapping portions 21 are formed at two places on both ends of the electric wire protection member 2 in the extending direction of the insulated wires 91 to 93. Therefore, the winding part 20 is hold | maintained in the state wound around the electric wire group 90, even if it is not bound by binding materials, such as an adhesive tape or a binding belt.

  In addition, it is also considered that the hard winding part 21 is provided in three or more places of the electric wire protection member 2. It is also conceivable that the hard wrapping portion 21 is provided only at one location of the wire protection member 2. However, in this case, it is desirable that the soft wrapping portion 22 is bound by a binding material such as an adhesive tape or a binding belt.

<Overhanging part of wire protection member>
On the other hand, the overhang portion 23 includes a second portion 312 of the insulating layer 31 connected to the first portion 311 of the insulating layer 31 and a second portion 322 of the conductive layer 32 stacked on the second portion 312 of the insulating layer 31. Become.

  The second portion 312 of the insulating layer 31 is hardened in a plate shape projecting laterally from the hard wrapping portion 21. Further, the second portion 322 of the conductive layer 32 is continuous with the first portion 321 of the conductive layer 32. The tongue piece portion 302 of the sheet material 3 becomes the overhang portion 23.

  In the present embodiment, since the insulating layer 31 is a non-woven fabric, the second portion 312 of the insulating layer 31 that constitutes the overhang portion 23 is a portion in which the non-woven fabric is cured into a plate shape by heat molding (hot press molding). .

  The second portion 322 of the conductive layer 32 forms at least one of both surfaces of the overhang portion 23. That is, the second portion 322 of the conductive layer 32 forms an exposed surface on at least one of the front and back surfaces of the overhang portion 23.

  Moreover, the overhang | projection part 23 in this embodiment has the structure folded more than double. In the example shown in FIG. 2, the overhang portion 23 has a structure in which the second portion 322 of the conductive layer 32 is double-folded in a state of forming an outer surface. In this case, the second portion 322 of the conductive layer 32 forms an exposed surface on both the front and back sides of the protruding portion 23.

  In the example shown in FIGS. 1 and 2, a fixing hole 231 is formed in the overhang portion 23. The overhang portion 23 is fixed to the support by a conductive fixing tool such as a metal screw passed through the hole 231. The fixed support is a reference potential point for grounding the housing, and is, for example, a metal frame of a vehicle.

  In the example shown by FIG. 1, the overhang | projection part 23 is formed in two places of the both ends of the extending direction of the insulated wires 91-93 in the electric wire protection member 2. As shown in FIG. In addition, it is also considered that the overhang | projection part 23 is provided in three or more places of the electric wire protection member 2. FIG.

  Further, the series of hard winding portions 21 and one overhang portion 23 do not necessarily correspond one-to-one. For example, it is conceivable that the plurality of overhang portions 23 are formed continuously with the series of hard winding portions 21. Moreover, when the hard winding part 21 is provided separately in several places, it is also considered that the 1 or several overhang | projection part 23 is formed only in some of the hard winding parts 21 of several places. It is done.

<Attachment mode of wire harness>
Next, three examples of how the wire harness 1 is attached will be described with reference to FIGS. FIG. 4 is a plan view of the wire harness 1 attached along a straight line. FIG. 5 is a plan view of the wire harness 1 attached along a curve. FIG. 8 is a front view of the wire harness 1 attached to the support 7 by a sandwiching structure.

  In the example shown in FIGS. 4 and 5, each of the two overhang portions 23 in the electric wire protection member 2 is fixed to the support body 7 with a metal screw 6 (bolt). Furthermore, in the example shown by FIG. 4, the two overhang | projection parts 23 are being fixed to the position which hold | maintains the winding part 20 of the electric wire protection member 2 in the state along a straight line.

  Moreover, in the example shown by FIG. 5, the two overhang | projection parts 23 are being fixed to the position which hold | maintains the soft winding part 22 of the electric wire protection member 2 in the state along a curve. The wire protection member 2 of the wire harness 1 has a soft winding portion 22 having flexibility. Therefore, as shown in FIG. 5, it is also possible to fix the wire harness 1 in a state along a curve.

  On the other hand, in the example shown in FIG. 8, the overhang portion 23 is fixed to the support 7 by being sandwiched between conductive clip portions 60 provided on the support 7. The clip part 60 is a part which pinches the overhang | projection part 23 with an elastic force. The overhanging portion 23 of the wire protection member 2 may be attached to the support 7 by a sandwiching structure as shown in FIG.

Second Embodiment
Next, a wire harness 1A according to a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a perspective view of the wire harness 1A.

  The wire harness 1 </ b> A differs from the wire harness 1 shown in FIGS. 1 to 5 only in that it does not have the soft wrapping portion 22. 6, the same components as those shown in FIGS. 1 to 5 are given the same reference numerals. Hereinafter, only different points of the wire harness 1A from the wire harness 1 will be described.

  Similar to the wire harness 1, the wire harness 1 </ b> A also includes an electric wire group 90 and an electric wire protection member 2 </ b> A surrounding the electric wire group 90. Furthermore, the electric wire protection member 2A includes a winding part 20A wound around the electric wire group 90 and an overhang part 23 protruding from the winding part 20A to the side thereof.

  Moreover, the winding part 20A of the electric wire protection member 2A, like the winding part 20 of the electric wire protection member 2, divides the electric wire group 90 into three groups of the first insulated wire 91, the second insulated wire 92, and the third insulated wire 93. It is wound around the wire group 90 in a partitioned state.

  However, the entire winding portion 20A of the wire protection member 2A is a hard winding portion 21. In this case, the insulating layer 31 of the wire protection member 2A may be a non-woven fabric, but the insulating layer 31 may be formed of a member other than the non-woven fabric.

  For example, it is conceivable that the insulating layer 31 of the wire protection member 2A is a hard member obtained by curing a sheet member made of an ultraviolet curable resin. It is also conceivable that the insulating layer 31 of the wire protection member 2A is a hard member obtained by curing a moisture-curing resin sheet member. It is also conceivable that the insulating layer 31 of the wire protection member 2A is a hard member obtained by curing a sheet member of a thermosetting resin.

  Various types of ultraviolet curable resins are conceivable. For example, the resin is mainly composed of acrylate, unsaturated polyester, epoxy, oxetane, vinyl ether, or the like. The moisture curable resin is, for example, a one-component moisture curable polyurethane resin.

  The winding part 20A of the electric wire protection member 2A has a function of holding the electric wire group 90 in a shape along a predetermined path. In the example shown in FIG. 6, the winding portion 20 </ b> A of the wire protection member 2 </ b> A is formed along a straight line.

<Third Embodiment>
Next, a wire harness 1B according to a third embodiment of the present invention will be described with reference to FIG. FIG. 7 is a plan view of the wire harness 1B.

  The wire harness 1B differs from the wire harness 1A shown in FIG. 6 only in the shape of the winding portion. 7, the same components as those shown in FIGS. 1 to 6 are given the same reference numerals. Hereinafter, only the differences of the wire harness 1B from the wire harness 1A will be described.

  Similar to the wire harness 1A, the wire harness 1B also includes an electric wire group 90 and an electric wire protection member 2B surrounding the electric wire group 90. Furthermore, the electric wire protection member 2B includes a winding portion 20B wound around the electric wire group 90, and an overhang portion 23 protruding to the side from the hard winding portion 21 of the winding portion 20B.

  Furthermore, the whole winding part 20B of the electric wire protection member 2B is the hard winding part 21 like the winding part 20A of the electric wire protection member 2A. However, the winding part 20B of the wire protection member 2B is formed in a shape along a curve.

  The winding portion 20B is obtained by performing a predetermined curing process in a state where the base portion 301 wound around the wire group 90 in the sheet material 3 is held in a predetermined bent shape. The winding part 20B of the wire protection member 2B itself has a function of holding the wire group 90 in a shape along the curved path.

<Effect>
In the wire harnesses 1, 1A, 1B, the wire protection members 2, 2A, 2B including the conductive layer 32 have an electromagnetic shielding function. And a series of electric wire protection members 2, 2A, 2B have the structure wound around the electric wire group 90 in the state which partitions off the electric wire group 90 into two or more groups. In this case, the man-hours required for attaching the wire protection members 2, 2A, 2B are almost the same regardless of the number of groups of the insulated wires 91, 92, 93. That is, attachment of the wire protection members 2, 2 </ b> A, 2 </ b> B is easy regardless of the number of groups of the insulated wires 91, 92, 93.

  The insulating layer 31 of the wire protection members 2, 2 </ b> A, 2 </ b> B includes a first portion 311 that is a layer of synthetic resin that is cured after being wound around the wire group 90. For example, as shown in FIG. 7, such a hardened portion of the insulating layer 31 also functions to maintain the wire group 90 in a shape along a predetermined path (path regulation function).

  In the wire harness 1, a synthetic resin nonwoven fabric is employed as the insulating layer 31 of the wire protection member 2. In this case, it is possible to prevent the wire protection member 2 from coming into contact with surrounding objects and generating abnormal noise due to the cushioning property of the nonwoven fabric.

  Furthermore, when a synthetic resin nonwoven fabric is employed as the insulating layer 31, only a part of the insulating layer 31 can be cured, and the insulating layer 31 can be cured with different hardness for each part. Therefore, it is possible to easily provide the wire protection member 2 having different hardness depending on the required specification.

  For example, it is possible to make a specific part other than the hard winding part 21 and the overhang part 23 in the electric wire protection member 2 into a soft state in which it can be easily bent. As a result, as shown in FIGS. 4 and 5, the wire harness 1 can be attached along various paths.

  Some dimensional errors are allowed by deformation of the soft wrapping portion 22. This point also contributes to the ease of attachment of the wire protection member 2.

  In addition, as described above, a wire harness of an electric vehicle such as a hybrid vehicle or an electric vehicle may include three types of insulated wires 91, 92, and 93 having different electromagnetic shield requirement specifications. Therefore, the wire harnesses 1, 1 </ b> A, 1 </ b> B including the wire protection members 2, 2 </ b> A, 2 </ b> B that partition three or more insulated wires into three groups are suitable for application to an electric vehicle.

<Others>
In the wire harnesses 1, 1 </ b> A, 1 </ b> B, the wire protection members 2, 2 </ b> A, 2 </ b> B project to the side from the hard winding portion 21 that is hardened while being wound around the wire group 90 (insulated wires). And an overhang portion 23. The wire protection members 2, 2 </ b> A, 2 </ b> B have a laminated structure including the insulating layer 31 and the conductive layer 32.

  Therefore, the winding portions 20, 20A, 20B in the wire protection members 2, 2A, 2B protect the wire group 90 and perform an electromagnetic shielding function. Then, as shown in FIGS. 4 and 5, mounting of the wire protection members 2, 2 </ b> A, and 2 </ b> B having an electromagnetic shielding function is completed simply by fixing the overhang portion 23 to the conductive support 7 serving as a reference potential point. To do.

  That is, only the overhang portion 23 is fixed to the conductive support 7, and the overhang portion 23 and the hard winding portion 21 connected to the overhang portion 23 are fixed to the support body. As a result, the entire wire protection members 2, 2 </ b> A, 2 </ b> B are fixed. Is fixed to the support 7. At this time, the first portion 321 of the conductive layer 32 covering the wire group 90 is electrically connected to the reference potential point (support 7) through the exposed surface of the second portion 322 of the conductive layer 32 in the overhang portion 23.

  Moreover, the part connected with the overhang | projection part 23 in the winding parts 20, 20A, 20B is the hard winding part 21 hardened | cured by the hardening process. Therefore, the wire protection members 2, 2 </ b> A, and 2 </ b> B are firmly fixed without wobbling only by fixing the overhang portion 23.

  As described above, if the wire harnesses 1, 1 </ b> A, 1 </ b> B are employed, it becomes easy to attach the wire protection members 2, 2 </ b> A, 2 </ b> B having an electromagnetic shielding function. That is, there is no need to separately perform the work of fixing the wire protection members 2, 2A, 2B and the work of connecting the conductive member (shield member) covering the wire group 90 to the reference potential point.

  Further, in the wire harnesses 1, 1 </ b> A, 1 </ b> B, the overhang portions 23 of the wire protection members 2, 2 </ b> A, 2 </ b> B have a structure that is folded twice or more. In this case, the thickness of the second portion 312 of the insulating layer 31 in the overhang portion 23 increases, and the strength of the overhang portion 23 increases. As a result, the wire protection members 2, 2 </ b> A, 2 </ b> B can be firmly fixed to the support body 7.

  In the wire harnesses 1, 1 </ b> A, 1 </ b> B, the overhang portion 23 has a structure that is folded twice or more. However, it is also conceivable that the overhang portion 23 does not have a folded structure.

  In the wire harnesses 1, 1 </ b> A, 1 </ b> B, it is also conceivable that the wire protection members 2, 2 </ b> A, 2 </ b> B do not have the hard winding portion 21 (hardened portion). In this case, the wire protection members 2, 2A, 2B are maintained in a state of being wound around the wire group 90 by a binding material such as an adhesive tape. For example, a binding material such as an adhesive tape binds the wire group 90 and the wire protection members 2, 2 </ b> A, 2 </ b> B at least at both ends of the sheet-like wire protection members 2, 2 </ b> A, 2 </ b> B wound around the wire group 90. .

  In the wire harness according to the present invention, the embodiments described above can be freely combined within the scope of the invention described in each claim, or each embodiment can be appropriately modified or partially omitted. It is also possible to constitute by doing.

DESCRIPTION OF SYMBOLS 1,1A, 1B Wire harness 2,2A, 2B Electric wire protection member 3 Sheet material 6 Screw 7 Support body 20,20A, 20B Winding part 21 Hard winding part 22 Soft winding part 23 Overhang part 30 Electric wire protection member (sheet material) One side 31 Insulating layer 32 Conductive layer 60 Clip portion 81 Metal terminal 82 Connector 90 Wire group 91 First insulated wire 92 Second insulated wire 93 Third insulated wire 231 Hole 301 Base 302 Tongue piece 311 Insulating layer first portion 312 Insulation Second part of layer 321 First part of conductive layer 322 Second part of conductive layer

Claims (4)

A plurality of insulated wires;
A state consisting of a series of members having a laminated structure including an insulating layer of synthetic resin and a conductive layer of a conductive member, wherein the insulating layer forms an exterior and a plurality of the insulated wires are partitioned into two or more groups And a wire protection member that is wound around the plurality of insulated wires and covers the periphery of the plurality of insulated wires. The wire harness according to claim 1,
The said insulating layer of the said electric wire protection member is a wire harness containing the layer of the synthetic resin hardened after being wound around the said insulated wire. The wire harness according to claim 2,
The said insulating layer in the said electric wire protection member consists of a synthetic resin nonwoven fabric, The wire harness containing the part which the said nonwoven fabric hardened | cured by thermoforming. The wire harness according to any one of claims 1 to 3,
The wire protection member is a wire harness wound around three or more insulated wires in a state of partitioning three or more insulated wires into three groups.

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