JP2023141870A - wire harness - Google Patents

Abstract

To provide a wire harness that can enhance versatility of a covering member covering an outer periphery of a boundary portion between a portion arranged inside a connector and a portion arranged outside the connector, in an electric wire.SOLUTION: A wire harness 10 comprises: a connector 21 having a housing 23 holding three or more connection terminals 22; three or more electric wires 41 extending from the inside to the outside in the housing 23; an insulation sheet 71 covering a range including boundaries 44 between a portion arranged inside the housing 23 and a portion arranged outside the housing, in the electric wires 41, from outside of the connector 21; and first fixing members 81 fixing the insulation sheet 71 to the connector 21. The electric wires 41 have first adjacent areas A1 adjacent to the connector 21 in a length direction X1 of the electric wires 41. The connector 21 has a second adjacent area A2 adjacent to the first adjacent area A1 in the length direction X1. The insulation sheet 71 surrounds outer peripheries of the first adjacent area A1 and of the second adjacent area A2 throughout the whole circumference.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a wire harness.

Conventionally, there are wire harnesses that electrically connect electrical devices mounted on a vehicle. The wire harness includes an electric wire and a connector provided at the end of the electric wire. For example, the wire harness described in Patent Document 1 includes a rubber grommet that covers the outer periphery of a boundary portion between a portion of the electric wire disposed inside the connector and a portion disposed outside the connector.

Japanese Patent Application Publication No. 2021-193655

The rubber grommet can prevent foreign matter from coming into contact with the vicinity of the boundary between the portion of the electric wire disposed inside the connector and the portion disposed outside.
By the way, when there are multiple types of wire harnesses that differ in connector shape, wire diameter, number of wires, etc., multiple types of grommets are formed depending on the connector shape, wire diameter, number of wires, etc. A rubber grommet is a resin molded product formed using a mold. Therefore, in order to manufacture multiple types of grommets, multiple types of molds must be formed. Further, when the shape of the connector is changed or the wiring route of the electric wire near the connector is changed, the grommet must be designed and the mold formed each time. Therefore, there is room for improvement in the versatility of the covering member that covers the outer periphery of the boundary between the portion of the electric wire disposed inside the connector and the portion disposed outside the connector.

An object of the present disclosure is to provide a wire harness that can increase the versatility of a covering member that covers the outer periphery of a boundary between a portion of an electric wire disposed inside a connector and a portion disposed outside.

The wire harness of the present disclosure includes a connector having three or more connection terminals and a connector housing holding the three or more connection terminals, and an interior of the connector housing that is electrically connected to each of the three or more connection terminals. an insulating sheet that covers a range of each of the three or more electric wires, including a boundary between a portion disposed inside the connector housing and a portion disposed outside the connector housing, from the outside of the connector; and a first fixing member that fixes the insulating sheet to the connector, each of the three or more electric wires having a first adjacent region adjacent to the connector in the length direction of the electric wire, and The connector has a second adjacent region adjacent to the first adjacent region in the length direction of the electric wire, and the insulating sheet completely surrounds the first adjacent region and the second adjacent region. It's a wire harness.

According to the wire harness of the present disclosure, the versatility of the covering member that covers the outer periphery of the boundary portion between the portion of the electric wire disposed inside the connector and the portion disposed outside the connector can be increased.

FIG. 1 is a front view schematically showing a wire harness according to an embodiment. FIG. 2 is a longitudinal sectional view schematically showing the wire harness of FIG. 1. FIG. FIG. 3 is a cross-sectional view schematically showing the wire harness of FIG. 1. FIG. 4 is a cross-sectional view schematically showing the wire harness of FIG. 1.

[Description of embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.
The wire harness of the present disclosure includes:
[1] A connector having three or more connection terminals and a connector housing that holds the three or more connection terminals, and a connector that is electrically connected to each of the three or more connection terminals and extends from the inside of the connector housing to the outside. three or more electric wires, an insulating sheet that covers a range including a boundary between a portion disposed inside the connector housing and a portion disposed outside the connector housing of each of the three or more electric wires from the outside of the connector; and the insulating sheet. a first fixing member that fixes the sheet to the connector, each of the three or more electric wires having a first adjacent region adjacent to the connector in the length direction of the electric wire, and the connector The wire harness has a second adjacent region adjacent to the first adjacent region in the length direction of the electric wire, and the insulating sheet surrounds the entire circumference of the first adjacent region and the second adjacent region. .

According to this configuration, the outer periphery of the boundary portion between the portion of each electric wire disposed inside the connector and the portion disposed outside the connector can be covered by the insulating sheet surrounding the first adjacent region and the second adjacent region. can. Since the insulating sheet is fixed to the connector by the first fixing member, it can maintain a state covering the outer periphery of the boundary portion.

If the insulating sheet can surround the first adjacent region and the second adjacent region, it can cover the outer periphery of the boundary between the portion of each electric wire disposed inside the connector and the portion disposed outside. Therefore, if there are multiple types of wire harnesses with different connector shapes, wire diameters, number of wires, etc., the size of the first adjacent area and the second adjacent area may be large enough to be surrounded by the insulating sheet. For example, a common insulating sheet can be used for multiple types of wire harnesses. Furthermore, in the case of forming multiple types of insulating sheets having different sizes depending on the type of wire harness, the insulating sheet of the required size may be cut out from the sheet that is the material of the insulating sheet. That is, it is not necessary to form a mold for molding the covering member depending on the type of wire harness. Therefore, compared to the case where the covering member is a conventional rubber grommet, the versatility of the covering member that covers the outer periphery of the boundary between the part placed inside the connector and the part placed outside of each electric wire is improved. can be increased.

[2] Preferably, the first fixing member surrounds and tightens the insulating sheet and the second adjacent region.
According to this configuration, the insulating sheet can be easily fixed to the connector by surrounding the insulating sheet and the second adjacent region with the first fixing member and tightening the first fixing member.

[3] The connector further includes a shield shell that covers the outer periphery of the connector housing, and the wire harness further includes a braided member that covers the outer periphery of the three or more electric wires and is electrically connected to the shield shell. the first fixing member fixes the braided member and the insulating sheet to the connector by sandwiching the braided member and the insulating sheet between an outer peripheral surface of the shield shell and the first fixing member; It is preferable.

According to this configuration, the number of parts can be reduced compared to, for example, a case where the wire harness further includes a fixing member for fixing the braided member to the connector in addition to the first fixing member. Further, since the process of fixing the braided member to the connector and the process of fixing the insulating sheet to the connector can be performed simultaneously, the number of man-hours required for manufacturing the wire harness can be reduced.

[4] Further comprising a first tape member that covers the outer periphery of a portion of each of the three or more electric wires that is disposed outside the connector housing and includes the first adjacent region, and each of the three or more electric wires It is preferable that the first tape member has a core wire made of a conductor and an insulating coating covering the outer periphery of the core wire, and the first tape member has a higher electrical resistance than the core wire.

According to this configuration, the core wire of the portion of each of the three or more electric wires covered by the first tape member is covered by two members: the insulation coating and the first tape member. Therefore, the insulation of the portion of each of the three or more electric wires covered with the first tape member can be improved.

[5] The exterior member further includes: an exterior member that covers the outer periphery of the three or more electric wires; and a second tape member that positions the exterior member with respect to the three or more electric wires in the length direction of the electric wires. , the second tape member has an opposing end portion that faces the connector in the length direction of the electric wire, and the second tape member includes a region including the opposing end portion of the sheathing member, and a region that includes the opposite end portion of the three or more electric wires, and The adhesive tape is wound around the outer periphery of the portion between the opposite end, and the end of the first tape member in the length direction of the electric wire that is far from the connector is located inside the exterior member. It is preferable to do so.

According to this configuration, the exterior member can prevent foreign matter from coming into contact with the end of the first tape member in the length direction of the electric wire that is farther from the connector. Therefore, it is possible to suppress the first tape member from peeling off or peeling off from the end farther from the connector among both ends of the first tape member in the length direction of the electric wire. Further, since the exterior member is positioned with respect to the electric wire in the length direction of the electric wire by the second tape member, the end farthest from the connector of both ends of the first tape member in the length direction of the electric wire is connected to the exterior member. Easy to maintain when placed inside.

[6] It is preferable that, of both ends of the insulating sheet in the length direction of the electric wire, the end farther from the connector is located between the connector and the opposite end in the length direction of the electric wire. .

According to this configuration, it is possible to suppress an increase in the outer diameter of the portion of the wire harness where the exterior member is disposed due to the insulating sheet.
[7] It is preferable to further include a second fixing member that surrounds the outer periphery of the second tape member and the exterior member and that sandwiches the second tape member between it and the outer peripheral surface of the exterior member.

According to this configuration, the second fixing member can prevent the second tape member from being removed from the exterior member.
[8] The second fixing member is arranged between, in the length direction of the electric wire, the end farther from the connector of both ends of the first tape member in the length direction of the electric wire and the opposite end. Preferably located.

According to this configuration, the end farther from the connector of both ends of the first tape member in the length direction of the wire is farther from the opposite end of the exterior member than the second fixing member in the length direction of the wire. . For this reason, for example, if the second tape member is peeled off from the end closer to the connector among both ends of the second tape member in the length direction of the electric wire, the end of the first tape member farther from the connector is removed. The second fixing member can prevent the second tape member from being peeled off. Therefore, it is possible to further suppress foreign matter from coming into contact with the end farther from the connector among both ends of the first tape member in the length direction of the electric wire. Therefore, peeling or peeling of the first tape member from the end farther from the connector among both ends of the first tape member in the length direction of the electric wire can be further suppressed.

[9] Preferably, the insulating sheet is a sheet made of polyvinyl chloride.
According to this configuration, since polyvinyl chloride sheets are easily available, the insulating sheet can be easily prepared.

[10] Preferably, the first tape member is a polyvinyl chloride tape.
According to this configuration, since polyvinyl chloride tape is easily available, the first tape member can be easily prepared. Moreover, the outer circumferences of three or more electric wires can be easily covered with the first tape member.

[Details of embodiments of the present disclosure]
Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. In each drawing, a part of the configuration may be exaggerated or simplified for convenience of explanation. Further, the dimensional ratio of each part may differ in each drawing. In each drawing, XYZ axes that are orthogonal to each other are illustrated. In this specification, "orthogonal" includes not only strictly orthogonal cases, but also approximately orthogonal cases within the range that provides the effects of this embodiment. The term "annular" as used herein also refers to any structure that forms a loop, i.e., a continuous shape with no ends, as well as an overall loop shape with a gap, such as a C-shape. Sometimes refers to structure. "Annular" shapes include, but are not limited to, circles, ovals, and polygons with pointed or rounded corners. Furthermore, in this specification, when the expression "along" is used, the angle between the reference direction and the direction in which the object extends is preferably 5 degrees or less, and preferably 1 degree or less. More preferably, it is 0 degrees, that is, parallel, most preferably. In addition, "opposing" in this specification refers to surfaces or members being in front of each other, and not only when they are completely in front of each other, but also partially in front of each other. including cases where In addition, "opposed" in this specification refers to both a case where a member different from the two parts is interposed between the two parts, and a case where nothing is interposed between the two parts. including. Also, the expression "at least one" as used herein means "one or more" of the desired options. As an example, the expression "at least one" as used herein means "only one option" or "both of the two options" if the number of options is two. As another example, the expression "at least one" as used herein means "only one option" or "any combination of two or more options" if there are three or more options. means. Note that the present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all changes within the meaning and scope equivalent to the scope of the claims.

An embodiment of the wire harness will be described below.
(Overall configuration of wire harness 10)
The wire harness 10 shown in FIG. 1 is mounted on, for example, a fuel cell vehicle. The wire harness 10 electrically connects electrical devices mounted on a vehicle. For example, the wire harness 10 electrically connects an inverter and a motor mounted on a vehicle. This motor is a three-phase motor for driving wheels and serves as a power source for running the vehicle.

As shown in FIGS. 1 and 2, the wire harness 10 includes a connector 21, three or more electric wires 41, an insulating sheet 71, and a first fixing member 81. The wire harness 10 has, for example, three electric wires 41, ie, electric wires 41a, 41b, and 41c. Note that the number of electric wires 41 is not limited to three, but may be three or more. For example, the number of electric wires 41 may be 3n (n is a positive integer). Each electric wire 41 extends, for example, along the X axis. The length direction X1 of the electric wire 41 is, for example, a direction along the X axis.

Note that the connector 21 may be provided only at one end of both ends of the electric wire 41 in the length direction X1. Furthermore, the connectors 21 may be provided at both ends of the electric wire 41, one end and the other end.

(Configuration of connector 21)
As shown in FIG. 2, the connector 21 includes three or more connection terminals 22 and a connector housing 23 that holds the three or more connection terminals 22. The connector 21 has the same number of connection terminals 22 as the number of electric wires 41. For example, the connector 21 has three connection terminals 22, ie, connection terminals 22a, 22b, and 22c. Note that the connector housing 23 will be hereinafter referred to as housing 23.

(Configuration of connector housing 23)
The housing 23 is made of an insulating material such as synthetic resin. The housing 23 has a fixing portion 24 in an end region of the housing 23 in the longitudinal direction X1. For example, the fixed part 24 has a slightly smaller outer shape when viewed from the longitudinal direction X1 than a portion of the housing 23 adjacent to the fixed part 24 in the longitudinal direction X1. The fixing portion 24 has a through surface 25 through which the electric wire 41 passes along the length direction X1. The penetrating surface 25 is, for example, an end surface of the fixing portion 24 in the length direction X1.

(Configuration of connection terminal 22)
Each connection terminal 22 has, for example, a terminal connection portion 26 that is an end region of the connection terminal 22 in the length direction X1. Further, each connection terminal 22 has, for example, a wire connection portion 27 that is an end region of each connection terminal 22 opposite to the terminal connection portion 26 . Each connection terminal 22 is made of a metal material such as copper, copper alloy, aluminum, aluminum alloy, stainless steel, or the like.

The connection terminals 22a to 22c are arranged along the first direction Y1. The first direction Y1 is a direction intersecting the length direction X1. The first direction Y1 is, for example, a direction along the Y axis. For example, each of the connection terminals 22a to 22c is partially buried in the housing 23. In each of the connection terminals 22a to 22c, the terminal connection portion 26 is arranged outside the housing 23. Further, in each of the connection terminals 22a to 22c, the wire connection portion 27 is buried inside the housing 23. In addition, each terminal connection part 26 is electrically connected to a terminal with which an electric device is provided.

(Configuration of shield shell 31)
The connector 21 may further include a shield shell 31 that covers the outer periphery of the housing 23. The shield shell 31 has a cylindrical shape that covers the outer peripheral surface of the housing 23, for example. The shield shell 31 may have at least one attachment portion 32 for attaching the connector 21 to an attachment target. The attachment target is, for example, a case of an electronic device, a bracket included in a vehicle body, or the like. For example, the shield shell 31 has three attachment parts 32. The connector 21 is fixed to the attachment target by fixing the attachment portion 32 to the attachment target with a screw or bolt. The shield shell 31 is made of a conductor such as metal, for example.

(Configuration of electric wire 41)
Each of the electric wires 41a to 41c is an electric wire to which a high voltage of, for example, 30V or more and 1000V or less is applied. Each of the electric wires 41a to 41c is a coated wire having a core wire 42 made of a conductor and an insulating coating 43 covering the outer periphery of the core wire 42.

As the core wire 42, for example, a twisted wire made by twisting a plurality of metal wires, a columnar conductor made of a single columnar metal rod with a solid structure inside, or a cylindrical conductor with a hollow structure inside. etc. can be used. Moreover, as the core wire 42, for example, a combination of multiple types of conductors such as twisted wires, columnar conductors, and cylindrical conductors can also be used. Examples of the columnar conductor include a single core wire and a bus bar. The core wire 42 is, for example, a twisted wire. As the material of the core wire 42, for example, a metal material such as copper-based or aluminum-based can be used.

As shown in FIG. 3, the cross-sectional shape (hereinafter referred to as cross-sectional shape) obtained by cutting the core wire 42 along a plane perpendicular to the length direction of the core wire 42, that is, the length direction X1 of the electric wire 41, can be any shape. I can do it. The cross-sectional shape of the core wire 42 is, for example, a circular shape, a semicircular shape, a polygonal shape, a square shape, a flat shape, or the like. The cross-sectional shape of the core wire 42 is, for example, circular. Note that FIG. 3 is a sectional view taken along line 3-3 in FIG.

For example, the insulation coating 43 covers the entire outer peripheral surface of the core wire 42 . The insulating coating 43 has a higher electrical resistance than the core wire 42. The insulating coating 43 is made of an insulating material such as synthetic resin, for example.

As shown in FIG. 2, the electric wires 41a to 41c are electrically connected to connection terminals 22a to 22c, respectively. At one end of the electric wire 41a in the length direction X1, the core wire 42 is exposed by removing the insulation coating 43. The exposed portion of the core wire 42 at one end of the electric wire 41a is joined to the electric wire connection portion 27 of the connection terminal 22a. As a method for joining the electric wire connecting portion 27 and the core wire 42, crimping, welding such as ultrasonic welding or laser welding, or other known joining methods can be used. One end portions of the electric wires 41b and 41c in the length direction X1 are similarly joined to the electric wire connection portions 27 of the connection terminals 22b and 22c, respectively.

The electrical connection portions between the electric wires 41a to 41c and the connection terminals 22a to 22c and the end regions of the electric wires 41a to 41c electrically connected to the connection terminals 22a to 22c are held inside the housing 23. ing. For example, the housing 23 is formed of a mold in which the end regions of the electric wires 41a to 41c and the wire connection portions 27 of the connection terminals 22a to 22c to which the end regions of the electric wires 41a to 41c are electrically connected are arranged. It is formed by molding in which molten insulating resin material is injected inside.

Each of the electric wires 41a to 41c extends from the inside of the housing 23 to the outside. Each of the electric wires 41a to 41c passes through the through surface 25 and projects from the inside of the housing 23 to the outside. In each of the electric wires 41a to 41c, a portion located in the same plane as the penetration surface 25 corresponds to a boundary 44 between a portion of each of the electric wires 41a to 41c located inside the housing 23 and a portion located outside the housing 23. do.

Each of the electric wires 41a to 41c has a first adjacent region A1 adjacent to the connector 21 in the length direction X1. The first adjacent region A1 is, for example, a region adjacent to the housing 23 in the length direction X1 of each of the electric wires 41a to 41c. Each of the electric wires 41a to 41c has a first adjacent region A1 in a portion of each of the electric wires 41a to 41c that is disposed outside the housing 23. In each of the electric wires 41a to 41c, the first adjacent region A1 is, for example, a portion between the boundary 44 and a first position P1 farther from the connector 21 than the boundary 44 along the length direction X1.

The connector 21 also has a second adjacent area A2 adjacent to the first adjacent area A1 in the length direction X1. The second adjacent region A2 is, for example, a portion of the connector 21 between the penetrating surface 25 and a second position P2 that is further away from the first adjacent region A1 than the penetrating surface 25 along the direction opposite to the length direction X1. It is. The second position P2 is, for example, the same position as the position of the end of the fixing part 24 on the opposite side to the penetrating surface 25 in the length direction X1. Note that the second position P2 can be arbitrarily set within the range of the connector 21 in the length direction X1.

(Configuration of first tape member 51)
The wire harness 10 may further include a first tape member 51 that covers the outer periphery of a portion of each of the electric wires 41a to 41c that is disposed outside the housing 23 and includes the first adjacent region A1.

The first tape member 51 has a higher electrical resistance than the core wire 42. The first tape member 51 is, for example, an adhesive tape having a strip-shaped base material and an adhesive layer laminated on one side of the base material. Examples of the first tape member 51 include polyvinyl chloride (PVC) tape, fluororesin tape, cloth tape whose base material is made of woven fabric, nonwoven tape whose base material is made of nonwoven fabric, and A paper tape made of paper, etc. can be used. The first tape member 51 is, for example, a PVC tape.

The first tape member 51 covers the outer periphery of a portion of each of the electric wires 41a to 41c between the boundary 44 and a third position P3 farther from the connector 21 than the boundary 44 along the length direction X1. For example, the third position P3 is further away from the boundary 44 along the length direction X1 than the first position P1. That is, in the length direction X1, the first position P1 is, for example, a position between the boundary 44 and the third position P3. The first tape member 51 covers, for example, the entire outer peripheral surface of a portion of each of the electric wires 41a to 41c that includes the first adjacent region A1 between the boundary 44 and the third position P3. A portion of each of the electric wires 41a to 41c between the boundary 44 and the third position P3 is individually covered with a first tape member 51, for example. Note that the first tape member 51 may collectively cover the outer periphery of the portion between the boundary 44 and the third position P3 in each of the electric wires 41a to 41c.

The first tape member 51 is wound, for example, in a spiral shape around a portion of each of the electric wires 41a to 41c between the boundary 44 and the third position P3. In addition, in FIG. 2, the first tape member 51 wound around each electric wire 41 is shown in a simplified cylindrical shape. The first tape member 51 is spirally wound around the outer periphery of each of the electric wires 41a to 41c so that a portion of the first tape member 51 in the width direction overlaps. The first tape member 51 is wound over a wider range in the length direction X1 than the first adjacent area A1 of each of the electric wires 41a to 41c, for example.

The first tape member 51 has a first end 51a and a second end 51b opposite to the first end 51a in the length direction X1. The position of the first end 51a in the length direction X1 is, for example, the same position as the boundary 44 or a position close to the boundary 44. The position of the second end 51b in the length direction X1 is the same as the third position P3.

(Configuration of braided member 61)
The wire harness 10 may further include a braided member 61 that covers the outer periphery of the three or more electric wires 41 and is electrically connected to the shield shell 31. The braided member 61 has, for example, a cylindrical shape that collectively covers the outer periphery of the electric wires 41a to 41c. As the braided member 61, a braided wire knitted with a plurality of metal wires or a braided wire knitted with a combination of metal wires and resin wires can be used. As the material of the metal wire, for example, a copper-based metal material, an aluminum-based metal material, or the like can be used.

The braided member 61 includes, for example, a wire sheathing portion 62 that covers the outer circumference of the electric wires 41a to 41c, and a connector sheathing portion 63 that covers the outer circumference of the connector 21. The connector covering portion 63 covers the outer periphery of the connector 21 so as to surround the outer periphery of the fixing portion 24 . The connector covering portion 63 contacts, for example, the outer circumferential surface of the shield shell 31 that covers the outer circumferential surface of the fixing portion 24 . The braided member 61 is electrically connected to the shield shell 31 by the connector covering portion 63 coming into contact with the outer peripheral surface of the shield shell 31 .

(Configuration of insulation sheet 71)
The insulating sheet 71 covers a range of each of the electric wires 41a to 41c from the outside of the connector 21, including a boundary 44 between a portion disposed inside the housing 23 and a portion disposed outside the housing 23. The insulating sheet 71 surrounds the entire outer periphery of the first adjacent area A1 and the second adjacent area A2. Further, it is preferable that the insulating sheet 71 is made of a material that is difficult to tear by hand without using a tool. The insulating sheet 71 is made of, for example, an insulating synthetic resin. The insulating sheet 71 is, for example, a sheet made of polyvinyl chloride.

The insulating sheet 71 has, for example, a rectangular shape. The shape of the insulating sheet 71 may be a rectangular shape as long as it can surround the outer periphery of the first adjacent area A1 and the second adjacent area A2 and cover the first adjacent area A1 and the second adjacent area A2 from the outside. Not limited to. The insulating sheet 71 may have any shape such as a rounded rectangular shape, an elliptical shape, or any other arbitrary shape, for example.

As shown in FIGS. 2 and 3, the insulating sheet 71 is wound around the connector 21 so as to surround the outer periphery of the first adjacent area A1 and the second adjacent area A2. For example, the insulating sheet 71 surrounds the first adjacent area A1 and the second adjacent area A2 from the outside of the braided member 61. That is, the insulating sheet 71 may be placed at a position covering the outer periphery of the braided member 61. For example, the portion of the insulating sheet 71 that covers the first adjacent area A1 surrounds the electric wires 41a to 41c in the first adjacent area A1 from the outside of the braided member 61 that covers the outer periphery of the electric wires 41a to 41c in the first adjacent area A1. . For example, the portion of the insulating sheet 71 that covers the second adjacent area A2 surrounds the connector 21 of the second adjacent area A2 from the outside of the braided member 61 that covers the connector 21 of the second adjacent area A2. For example, the braided member 61 is sandwiched between a portion of the insulating sheet 71 that covers the second adjacent area A2 and the shield shell 31 in the second adjacent area A2.

Both end regions of the insulating sheet 71 in the winding direction of the insulating sheet 71 are overlapped with each other. When viewed from the length direction X1, the insulating sheet 71 has an annular shape surrounding the outer periphery of the first adjacent area A1 and the second adjacent area A2. The insulating sheet 71 continuously covers the first adjacent area A1 and the second adjacent area A2 from the second position P2 to the first position P1. Further, the insulating sheet 71 covers the entire circumference of the first adjacent area A1 and the second adjacent area A2.

As shown in FIG. 2, the insulating sheet 71 has a first end 71a and a second end 71b opposite to the first end 71a in the length direction X1. The position of the first end 71a in the length direction X1 is the same as the second position P2. The position of the second end 71b in the length direction X1 is the same as the first position P1. The length of the portion of the insulating sheet 71 that covers the second adjacent area A2 in the length direction X1 is such that, for example, when a foreign object enters the inside of the insulating sheet 71 from the second end 71b, the foreign object will not reach the boundary 44. The length is such that it can be suppressed.

(Configuration of first fixing member 81)
As shown in FIGS. 2 and 3, the first fixing member 81 fixes the insulating sheet 71 to the connector 21. As shown in FIGS. The first fixing member 81 surrounds and tightens the insulating sheet 71 and the second adjacent area A2. The first fixing member 81 serves, for example, to fix the braided member 61 to the connector 21 and to fix the insulating sheet 71 to the connector 21. The first fixing member 81 fixes the braided member 61 and the insulating sheet 71 to the connector 21 by sandwiching the braided member 61 and the insulating sheet 71 between the outer peripheral surface of the shield shell 31 and the first fixing member 81 . For example, the first fixing member 81 is arranged on the outer periphery of the fixing part 24 so as to sandwich the shield shell 31, the braided member 61, and the insulating sheet 71 between the first fixing member 81 and the outer peripheral surface of the fixing part 24. Preferably, the first fixing member 81 is difficult to remove without using a tool. The first fixing member 81 is, for example, a metal caulking ring that is caulked by press working using a mold. Further, as the first fixing member 81, a stainless steel band may be used instead of a crimping ring.

(Configuration of exterior member 91)
As shown in FIG. 2, the wire harness 10 may further include an exterior member 91 that covers the outer periphery of the electric wires 41a to 41c. The exterior member 91 is for protecting the electric wires 41a to 41c. The exterior member 91 is made of, for example, a non-conductive synthetic resin. As the exterior member 91, for example, any one of a resin pipe, a resin protector, a twisted tube made of woven resin fibers, a flexible corrugated tube made of resin, etc. is used. be able to. As the resin material, for example, synthetic resins such as polyolefin, polyamide, polyester, polyethylene terephthalate, and ABS resin can be used. Exterior member 91 is, for example, a corrugated tube. The electric wires 41a to 41c pass through the exterior member 91 together with the braided member 61 in the length direction X1.

The exterior member 91 has a facing end 91a facing the connector 21 in the length direction X1. The opposing end 91a is the end closer to the connector 21 of both ends of the exterior member 91 in the length direction X1. The position of the opposing end portion 91a in the length direction X1 is, for example, between the first position P1 and the third position P3. Therefore, of both ends of the first tape member 51 in the length direction X1, the second end 51b that is farther from the connector 21 is located inside the exterior member 91, for example. Further, of both ends of the insulating sheet 71 in the length direction X1, the second end 71b that is farther from the connector 21 is located, for example, between the connector 21 and the opposing end 91a in the length direction X1.

(Configuration of second tape member 101)
As shown in FIGS. 2 and 4, the wire harness 10 may further include a second tape member 101 that positions the exterior member 91 with respect to the electric wires 41a to 41c in the longitudinal direction X1. Note that FIG. 4 is a sectional view taken along line 4-4 in FIG. The second tape member 101 is an adhesive tape having a strip-shaped base material and an adhesive layer laminated on one side of the base material. Further, it is preferable that the base material is made of a material that is difficult to tear by hand without using a tool. The second tape member 101 is, for example, a PVC tape.

The second tape member 101 is wrapped around a region of the exterior member 91 including the opposite end 91a and around the outer periphery of the portion of the electric wires 41a to 41c between the connector 21 and the opposite end 91a. The second tape member 101 is wrapped around the portion of the electric wires 41a to 41c between the connector 21 and the opposing end 91a from the outside of the braided member 61 that covers the portion. The second tape member 101 is wound, for example, in a spiral shape around a region of the exterior member 91 including the opposing end 91a and a portion of the electric wires 41a to 41c between the connector 21 and the opposing end 91a. In addition, in FIG. 2, the second tape member 101 is shown in a simplified cylindrical shape. The second tape member 101 is spirally wound around the exterior member 91 and the electric wires 41a to 41c so that the second tape member 101 partially overlaps in the width direction. The second tape member 101 covers the entire circumference of the exterior member 91 including the opposite end 91a. The second tape member 101 suppresses displacement of the exterior member 91 in the length direction X1 with respect to the electric wires 41a to 41c and the braided member 61.

(Configuration of second fixing member 111)
The wire harness 10 may further include a second fixing member 111 that surrounds the outer circumferences of the second tape member 101 and the exterior member 91 and sandwiches the second tape member 101 between it and the outer peripheral surface of the exterior member 91. The second fixing member 111 tightens the second tape member 101 and the exterior member 91, for example. It is preferable that the second fixing member 111 is difficult to remove without using a tool. As the second fixing member 111, for example, any one of a binding band, a stainless steel band, a caulking ring, etc. can be used. For example, the second fixing member 111 is a binding band made of resin.

As shown in FIG. 2, the second fixing member 111 has a second end 51b that is farther from the connector 21 among both ends of the first tape member 51 in the length direction X1, and an opposite end 91a. located between. That is, the second end 51b of the first tape member 51 is located at a position shifted from the second fixing member 111 in the length direction X1. Further, for example, the second fixing member 111 is located between the second end 71b of the insulating sheet 71 and the third position P3 in the length direction X1. That is, the second fixing member 111 does not need to be arranged inside the insulating sheet 71.

(Action of embodiment)
The operation of this embodiment will be explained.
The wire harness 10 includes an insulating sheet 71 that covers a range of each of the three or more electric wires 41 including a boundary 44 between a portion disposed inside the housing 23 and a portion disposed outside the connector 21 from the outside. The insulating sheet 71 surrounds the entire outer periphery of the first adjacent area A1 and the second adjacent area A2. Therefore, the insulating sheet 71 can cover the outer periphery of the area including the boundary 44 between the portion of each electric wire 41 disposed inside the housing 23 and the portion disposed outside. Since the insulating sheet 71 is fixed to the connector 21 by the first fixing member 81, it can maintain a state covering the outer periphery of the boundary 44. The insulating sheet 71 can prevent foreign matter from coming into contact with the vicinity of the boundary 44 in the electric wire 41. Note that it is difficult to remove the first fixing member 81 without using a tool.

Further, the outer periphery of a portion of each of the three or more electric wires 41 disposed outside the housing 23 that includes the first adjacent region A1 is covered with a first tape member 51 having a higher electrical resistance than the core wire 42. There is. Therefore, the portion of the core wire 42 covered by the first tape member 51 in each of the three or more electric wires 41 is doubly covered by the insulating coating 43 and the first tape member 51, which have higher electrical resistance than the core wire 42.

Further, the second end 51b of the first tape member 51 is arranged inside the exterior member 91. A second tape member 101 is wound around the outer periphery of a region including the opposite end 91a of the exterior member 91 and a portion of the electric wires 41a to 41c between the connector 21 and the opposite end 91a. The second fixing member 111 that sandwiches the second tape member 101 with the outer peripheral surface of the exterior member 91 is located between the second end 51b of the first tape member 51 and the opposite end 91a in the length direction X1. do. The second fixing member 111 is difficult to remove without using a tool. Therefore, the wire harness 10 has a configuration in which it is difficult to peel off the first tape member 51 from the second end 51b.

Such a wire harness 10 is suitable for being mounted on a vehicle in which the electrical resistance value of the vehicle per 1V is smaller than 500Ω, and for use with a voltage of 30V or more and 1000V or less being applied.

(Effects of embodiment)
The effects of this embodiment will be explained.
(1) The wire harness 10 includes a connector 21 having three or more connection terminals 22 and a housing 23 that holds the three or more connection terminals 22. The wire harness 10 includes three or more electric wires 41 that are electrically connected to three or more connection terminals 22 and extend from the inside of the housing 23 to the outside. The wire harness 10 includes an insulating sheet 71 that covers a range of each of the three or more electric wires 41 including a boundary 44 between a portion disposed inside the housing 23 and a portion disposed outside the connector 21 from the outside. The wire harness 10 includes a first fixing member 81 that fixes the insulating sheet 71 to the connector 21. Each of the three or more electric wires 41 has a first adjacent region A1 adjacent to the connector 21 in the length direction X1 of the electric wire 41. The connector 21 has a second adjacent area A2 adjacent to the first adjacent area A1 in the length direction X1. The insulating sheet 71 surrounds the entire outer periphery of the first adjacent area A1 and the second adjacent area A2.

According to this configuration, the insulating sheet 71 surrounding the first adjacent area A1 and the second adjacent area A2 forms a boundary between a portion of each electric wire 41 disposed inside the connector 21 and a portion disposed outside the connector 21. The outer periphery can be covered. Since the insulating sheet 71 is fixed to the connector 21 by the first fixing member 81, it can maintain a state covering the outer periphery of the boundary portion.

If the insulating sheet 71 can surround the first adjacent area A1 and the second adjacent area A2, the insulating sheet 71 can surround the outer periphery of the boundary between the portion of each electric wire 41 disposed inside the connector 21 and the portion disposed outside the connector 21. Can be covered. Therefore, when there are multiple types of wire harnesses with different connector shapes, wire diameters, number of wires, etc., the size of the first adjacent area A1 and the second adjacent area A2 is set to a size that can be surrounded by the insulating sheet 71. Otherwise, a common insulating sheet 71 can be used for multiple types of wire harnesses. Furthermore, in the case of forming a plurality of types of insulating sheets 71 having different sizes depending on the type of wire harness, the insulating sheet 71 of the required size may be cut out from the sheet that is the material of the insulating sheet 71. That is, it is not necessary to form a mold for molding the covering member depending on the type of wire harness. Therefore, compared to the case where the sheathing member is a conventional rubber grommet, the sheathing member that covers the outer periphery of the boundary between the portion of each electric wire 41 disposed inside the connector 21 and the portion disposed outside the connector 21 is more versatile. You can increase your sexuality.

(2) The first fixing member 81 surrounds and tightens the insulating sheet 71 and the second adjacent area A2. According to this configuration, the insulating sheet 71 can be easily fixed to the connector 21 by surrounding the insulating sheet 71 and the second adjacent region A2 with the first fixing member 81 and tightening the first fixing member 81. Moreover, in this embodiment, the first fixing member 81 surrounds and tightens the insulating sheet 71 and the second adjacent area A2 over the entire circumference. Therefore, the insulating sheet 71 can be fixed to the second adjacent area A2 of the connector 21 over the entire circumference.

(3) The connector 21 further includes a shield shell 31 that covers the outer periphery of the housing 23. The wire harness 10 further includes a braided member 61 that covers the outer periphery of the three or more electric wires 41 and is electrically connected to the shield shell 31. The first fixing member 81 fixes the braided member 61 and the insulating sheet 71 to the connector 21 by sandwiching the braided member 61 and the insulating sheet 71 between the outer peripheral surface of the shield shell 31 and the first fixing member 81 .

According to this configuration, for example, the number of parts can be reduced compared to a case where the wire harness 10 further includes a fixing member for fixing the braided member 61 to the connector 21 in addition to the first fixing member 81. Further, since the process of fixing the braided member 61 to the connector 21 and the process of fixing the insulating sheet 71 to the connector 21 can be performed simultaneously, the number of steps required for manufacturing the wire harness 10 can be reduced.

(4) The wire harness 10 further includes a first tape member 51 that covers the outer periphery of a portion of each of the three or more electric wires 41 that is disposed outside the housing 23 and includes the first adjacent region A1. Each of the three or more electric wires 41 has a core wire 42 made of a conductor and an insulating coating 43 covering the outer periphery of the core wire 42. The first tape member 51 has a higher electrical resistance than the core wire 42.

According to this configuration, the portion of the core wire 42 covered by the first tape member 51 in each of the three or more electric wires 41 is covered by two members, the insulation coating 43 and the first tape member 51. Therefore, the insulation of the portion of each of the three or more electric wires 41 covered with the first tape member 51 can be improved.

(5) The wire harness 10 further includes an exterior member 91 that covers the outer periphery of the three or more electric wires 41, and a second tape member 101 that positions the exterior member 91 with respect to the three or more electric wires 41 in the length direction X1. . The exterior member 91 has a facing end 91a facing the connector 21 in the length direction X1. The second tape member 101 is an adhesive tape that is wound around the outer periphery of a region of the exterior member 91 including the opposing end 91a and a portion of the three or more electric wires 41 between the connector 21 and the opposing end 91a. The second end 51b, which is the end farther from the connector 21 among both ends of the first tape member 51 in the length direction X1, is located inside the exterior member 91.

According to this configuration, the exterior member 91 can prevent foreign matter from coming into contact with the second end 51b, which is farther from the connector 21, of both ends of the first tape member 51 in the length direction X1. Therefore, it is possible to suppress the first tape member 51 from peeling off or peeling off from the second end 51b. Furthermore, since the exterior member 91 is positioned in the length direction X1 with respect to the electric wire 41 by the second tape member 101, the second end 51b of the first tape member 51 is placed inside the exterior member 91. Easy to maintain.

For example, instead of the second tape member 101, it is possible to use a rubber plug that is inserted into the exterior member 91 from the opposite end 91a. However, in this case, if the inner diameter of the outer member 91, the diameter of the electric wire 41, the number of electric wires 41, etc. change, the shape of the rubber stopper will be changed according to the inner diameter of the outer member 91, the diameter of the electric wire 41, the number of electric wires 41, etc. I will do it. A rubber stopper is a resin molded product formed using a mold. Therefore, a mold must be formed in accordance with the shape change of the rubber stopper. In contrast, the second tape member 101 can accommodate changes in the inner diameter of the exterior member 91, the diameter of the electric wires 41, the number of electric wires 41, etc. by simply adjusting the length. Therefore, the second tape member 101 is more versatile than a rubber stopper.

(6) The second end 71b, which is the end farther from the connector 21 among both ends of the insulating sheet 71 in the length direction X1, is located between the connector 21 and the opposing end 91a in the length direction X1. According to this configuration, the outer diameter of the portion of the wire harness 10 where the exterior member 91 is arranged can be prevented from increasing due to the insulating sheet 71.

(7) The wire harness 10 further includes a second fixing member 111 that surrounds the outer periphery of the second tape member 101 and the exterior member 91 and sandwiches the second tape member 101 between it and the outer peripheral surface of the exterior member 91. According to this configuration, the second fixing member 111 can prevent the second tape member 101 from being removed from the exterior member 91.

(8) In the length direction X1, the second fixing member 111 has a second end 51b, which is the end farther from the connector 21, of both ends of the first tape member 51 in the length direction X1, and an opposite end 91a. located in between.

According to this configuration, the second end 51b of the first tape member 51 is farther from the opposing end 91a of the exterior member 91 than the second fixing member 111 in the length direction X1. Therefore, for example, when the second tape member 101 is peeled off from the end closer to the connector 21 among both ends of the second tape member 101 in the length direction X1, the second tape member 101 reaches the second end 51b of the first tape member 51 The second fixing member 111 can prevent the second tape member 101 from being peeled off to this extent. Therefore, it is possible to further suppress foreign matter from coming into contact with the second end 51b of the first tape member 51. Therefore, peeling or separation of the first tape member 51 from the second end 51b of the first tape member 51 in the length direction X1 can be further suppressed.

(9) The insulating sheet 71 is a sheet made of polyvinyl chloride. According to this configuration, since polyvinyl chloride sheets are easily available, the insulating sheet 71 can be easily prepared.
(10) The first tape member 51 is a polyvinyl chloride tape. According to this configuration, since polyvinyl chloride tape is easily available, the first tape member 51 can be easily prepared. Further, the outer circumferences of three or more electric wires 41 can be easily covered with the first tape member 51.

This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
- The second fixing member 111 may tighten the second tape member 101 and the exterior member 91 at a position deviated from the second end 51b of the first tape member 51 in the direction away from the connector 21.

- The wire harness 10 does not need to include the second fixing member 111.
- The second end 71b of the insulating sheet 71 may be located at a position farther away from the connector 21 than the opposing end 91a.

- The second end 51b of the first tape member 51 may be located outside the exterior member 91. In this case, the second end 51b of the first tape member 51 is preferably covered by the second tape member 101. In this case, instead of the second fixing member 111, the wire harness 10 includes a portion of the electric wires 41a to 41c between the connector 21 and the opposing end 91a, a first tape member 51 wound around the portion, and a second tape member 51 wrapped around the portion. A third fixing member that surrounds and tightens the tape member 101 may be provided.

- The wire harness 10 does not need to include the second fixing member 111.
- The second tape member 101 does not need to be spirally wound around the area including the opposing end 91a of the exterior member 91 and the portion between the connector 21 and the opposing end 91a of the electric wires 41a to 41c. A plurality of second tape members 101 extending along the length direction It may be arranged so as to surround it. In this case, it is preferable that the widthwise ends of adjacent second tape members 101 overlap with each other.

- The wire harness 10 does not need to include the exterior member 91. In this case, the wire harness 10 does not need to include the second tape member 101.
- The first tape member 51 does not need to be spirally wound around each electric wire 41. For example, the plurality of first tape members 51 may be arranged to extend along the length direction X1 so as to cover the entire outer peripheral surface of the portion between the boundary 44 and the third position P3 in each electric wire 41. .

- The wire harness 10 does not need to include the first tape member 51.
- The insulating sheet 71 may be placed between the electric wires 41a to 41c and the braided member 61. That is, the insulating sheet 71 may be placed outside the electric wires 41a to 41c and inside the braided member 61. In this case, for example, the connector covering portion 63 of the braided member 61 is electrically connected to the shield shell 31 by being arranged so as to have a portion that contacts the shield shell 31 . Alternatively, the first fixing member 81 may come into contact with the shield shell 31, so that the braided member 61 may be electrically connected to the shield shell 31 via the first fixing member 81.

- The first fixing member 81 may be provided separately from the fixing member that fixes the braided member 61 to the connector 21. In this case, a binding band made of resin can also be used as the first fixing member 81.

- The wire harness 10 does not need to include at least one of the braided member 61 and the shield shell 31.
- The first fixing member 81 does not have to surround and tighten the insulating sheet 71 and the second adjacent area A2. The first fixing member 81 may be, for example, an adhesive tape attached to the surfaces of the insulating sheet 71 and the connector 21. Further, the first fixing member 81 may be, for example, a double-sided tape interposed between the insulating sheet 71 and the surface of the connector 21 and attached to the insulating sheet 71 and the surface of the connector 21.

- The connection terminal 22 may be formed separately from the housing 23. In this case, the connection terminal 22 is fixed to the housing 23.
- The length direction X1 may be the opposite direction to the direction in the above embodiment. Moreover, the first direction Y1 may be the opposite direction to the direction in the above embodiment.

- In the above embodiment, the wire harness 10 is applied to a wire harness that electrically connects an inverter and a motor, but the present invention is not limited thereto. For example, the wire harness 10 may be applied to a wire harness that electrically connects two or more electrical devices mounted on a vehicle other than an inverter and a motor. For example, the wire harness 10 may be applied to a wire harness that electrically connects an inverter and a high-voltage battery that can supply a voltage of 100 V or more.

- The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims, not the meaning described above, and is intended to include meanings equivalent to the scope of the claims and all changes within the scope.

10 Wire harness 21 Connector 22, 22a, 22b, 22c Connection terminal 23 Connector housing (housing)
24 Fixed part 25 Fixed surface 26 Terminal connection part 27 Wire connection part 31 Shield shell 32 Mounting part 41, 41a, 41b, 41c Electric wire 42 Core wire 43 Insulation coating 44 Boundary 51 First tape member 51a First end 51b Second end 61 Braid Member 62 Wire covering part 63 Connector covering part 71 Insulating sheet 71a First end 71b Second end 81 First fixing member 91 Exterior member 91a Opposing end 101 Second tape member 111 Second fixing member A1 First adjacent area A2 Second Adjacent area P1 First position P2 Second position P3 Third position X1 Length direction Y1 First direction

Claims (10)

a connector having three or more connection terminals and a connector housing that holds the three or more connection terminals;
three or more electric wires each electrically connected to the three or more connection terminals and extending from the inside of the connector housing to the outside;
an insulating sheet that covers a range of each of the three or more electric wires including a boundary between a portion disposed inside the connector housing and a portion disposed outside the connector housing from the outside of the connector;
a first fixing member that fixes the insulating sheet to the connector;
Equipped with
Each of the three or more electric wires has a first adjacent region adjacent to the connector in the length direction of the electric wire,
The connector has a second adjacent region adjacent to the first adjacent region in the length direction of the electric wire,
The insulating sheet is a wire harness that surrounds the entire outer periphery of the first adjacent region and the second adjacent region. The wire harness according to claim 1, wherein the first fixing member surrounds and tightens the insulating sheet and the second adjacent region. The connector further includes a shield shell that covers the outer periphery of the connector housing,
The wire harness further includes a braided member that covers the outer periphery of the three or more electric wires and is electrically connected to the shield shell,
The first fixing member fixes the braided member and the insulating sheet to the connector by sandwiching the braided member and the insulating sheet between an outer peripheral surface of the shield shell and the first fixing member. 2. The wire harness according to 2. further comprising a first tape member that covers the outer periphery of a portion of each of the three or more electric wires that is disposed outside the connector housing and includes the first adjacent region;
Each of the three or more electric wires has a core wire made of a conductor and an insulating coating covering the outer periphery of the core wire,
The wire harness according to any one of claims 1 to 3, wherein the first tape member has a higher electrical resistance than the core wire. an exterior member that covers the outer periphery of the three or more electric wires;
a second tape member that positions the exterior member with respect to the three or more electric wires in the length direction of the electric wire;
further comprising;
The exterior member has an opposite end facing the connector in the length direction of the electric wire,
The second tape member is an adhesive tape that is wrapped around the outer periphery of a region including the opposing end of the exterior member and a portion of the three or more electric wires between the connector and the opposing end,
The wire harness according to claim 4, wherein the end of the first tape member in the length direction of the electric wire, which is farther from the connector, is located inside the sheathing member. 6. The insulating sheet according to claim 5, wherein the end farther from the connector among both ends of the insulating sheet in the length direction of the wire is located between the connector and the opposing end in the length direction of the wire. wire harness. The wire according to claim 5 or 6, further comprising a second fixing member that surrounds the outer periphery of the second tape member and the exterior member and sandwiches the second tape member between it and the outer peripheral surface of the exterior member. Harness. The second fixing member is located in the length direction of the electric wire between the end of the first tape member farther from the connector and the opposing end in the length direction of the electric wire. The wire harness according to claim 7. The wire harness according to any one of claims 4 to 8, wherein the insulating sheet is a polyvinyl chloride sheet. The wire harness according to any one of claims 4 to 9, wherein the first tape member is a polyvinyl chloride tape.

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