WO2022255149A1 - ワイヤハーネス - Google Patents
ワイヤハーネス Download PDFInfo
- Publication number
- WO2022255149A1 WO2022255149A1 PCT/JP2022/021129 JP2022021129W WO2022255149A1 WO 2022255149 A1 WO2022255149 A1 WO 2022255149A1 JP 2022021129 W JP2022021129 W JP 2022021129W WO 2022255149 A1 WO2022255149 A1 WO 2022255149A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exterior
- exterior sheet
- wire harness
- sheet
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0045—Cable-harnesses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
Definitions
- the present disclosure relates to wire harnesses.
- some wire harnesses mounted on vehicles such as automobiles include electric wires and connectors provided at the ends of the electric wires.
- water enters the inside of the wire harness from between the corrugated tube that covers the outer periphery of the electric wire and the end of the corrugated tube and the connector.
- Some are further provided with a rubber boot that suppresses the The rubber boot is in close contact with the outer peripheral surface of the corrugated tube, thereby suppressing water from entering the wire harness from between the rubber boot and the outer peripheral surface of the corrugated tube.
- the rubber boot prevents water from entering the wire harness from between the connector and the rubber boot by being in close contact with the outer peripheral surface of the connector.
- the end opening of the corrugated tube is closed with a rubber boot and a connector.
- a corrugated tube is used that has an inner diameter that is larger than the outer diameter of the electric wire that is placed inside the corrugated tube. Therefore, an air layer exists between the inner peripheral surface of the corrugated tube and the outer peripheral surface of the electric wire. Therefore, when the electric wire generates heat when the electric wire is energized, the heat tends to stay inside the corrugated tube. Furthermore, when the end opening of the corrugated tube is closed by the rubber boot and the connector as described above, heat is more likely to remain inside the corrugated tube. Further, for example, when the heat of the electrical equipment to which the connector is connected is propagated to the wire harness via the connector, there is concern that the temperature inside the corrugated tube will further rise.
- the wire harness including the corrugated tube and rubber boot as described above has improved waterproofness, it has a problem of low heat dissipation.
- An object of the present disclosure is to provide a wire harness that can improve heat dissipation while suppressing deterioration in waterproofness.
- a wire harness of the present disclosure includes at least one electric wire and a connector provided at an end of the electric wire, and includes an exterior sheet surrounding the outer periphery of the electric wire, wherein the exterior sheet includes the electric wire. and has a water repellent portion having water repellency on at least a part of the outer surface of the exterior sheet.
- heat dissipation can be improved while suppressing deterioration in waterproofness.
- FIG. 1 is a schematic diagram of a wire harness according to the first embodiment.
- FIG. 2 is a cross-sectional view schematically showing the wire harness in the first embodiment.
- FIG. 3 is a longitudinal sectional view schematically showing part of the wire harness in the first embodiment.
- FIG. 4 is a longitudinal sectional view schematically showing part of the wire harness in the first embodiment.
- FIG. 5 is a longitudinal sectional view schematically showing part of the wire harness in the second embodiment.
- FIG. 6 is a schematic diagram showing part of the wire harness in the second embodiment.
- FIG. 7 is a cross-sectional view schematically showing part of a wire harness in a modification.
- FIG. 8 is a cross-sectional view schematically showing a wire harness in a modified example.
- the wire harness of the present disclosure includes: [1] A wire harness comprising at least one electric wire and a connector provided at an end of the electric wire, comprising an exterior sheet surrounding the outer circumference of the electric wire, wherein the outer sheet is wrapped around the outer circumference of the electric wire.
- the wire harness has a water repellent portion having water repellency on at least a part of the outer surface of the exterior sheet.
- the exterior sheet is wrapped around the outer circumference of the electric wire. Therefore, the space between the inner surface of the exterior sheet and the outer peripheral surface of the wire can be made smaller than the space between the inner peripheral surface of an exterior member such as a corrugated tube and the outer peripheral surface of the wire. Therefore, since the volume of air between the inner surface of the exterior sheet and the outer peripheral surface of the electric wire can be reduced, it is possible to suppress heat buildup inside the exterior sheet. Further, the distance between the inner surface of the exterior sheet and the outer peripheral surface of the wire can be made shorter than the distance between the inner peripheral surface of the exterior member such as a corrugated tube and the outer peripheral surface of the wire. Therefore, when the electric wire generates heat when the electric wire is energized, the heat of the electric wire is easily dissipated from the exterior sheet to the outside of the wire harness. As a result, the heat dissipation of the wire harness can be improved.
- the water-repellent part on the outer surface of the exterior sheet repels water. Therefore, when the wire harness is exposed to water, the water adhering to the water-repellent portion tends to fall off. Therefore, water adhering to the water-repellent portion is suppressed from entering the inside of the wire harness. Therefore, deterioration in waterproofness of the wire harness is suppressed.
- the exterior member can protect the electric wires and the portions of the exterior sheet that are arranged inside the exterior member.
- the exterior sheet has the water-repellent portion over at least the entire range exposed to the outside of the exterior member on the outer surface. According to this configuration, even if water is splashed on any portion of the portion of the exterior sheet that is exposed to the outside of the exterior member, it is possible to prevent the water from entering the wire harness. Therefore, deterioration of the waterproofness of the wire harness can be further suppressed.
- the exterior member has a tubular shape surrounding the outer periphery of the exterior sheet, and includes a first waterproof member that covers the entire periphery of both the ends of the exterior sheet in the length direction of the electric wire and the outer periphery of the connector. It is preferable to have
- the first waterproof member can prevent water from entering the interior of the exterior sheet from the ends of the exterior sheet in the length direction of the electric wire. Furthermore, the first waterproof member can prevent water from entering the interior of the connector. Therefore, it is possible to further suppress deterioration of the waterproofness of the wire harness.
- the exterior member has a tubular shape surrounding the outer periphery of the exterior sheet, and closes a gap between the outer surface and the inner peripheral surface of the end region of the exterior member in the length direction of the electric wire.
- a waterproof member is preferably provided.
- the second waterproof member can prevent water from entering the interior of the exterior member from the ends of the exterior member in the length direction of the electric wire. Therefore, deterioration of the waterproofness of the wire harness can be further suppressed.
- the exterior member may have a cylindrical shape surrounding the outer periphery of the exterior sheet, and may have a drain portion penetrating inside and outside the exterior member along a direction intersecting the length direction of the electric wire. preferable.
- the exterior member when water enters the inside of the exterior member, the water can be discharged to the outside of the exterior member from the water draining portion.
- the exterior member can protect the electric wires and the portions of the exterior sheet that are disposed inside the exterior member.
- the exterior sheet has the water-repellent portion over the entire outer surface. According to this configuration, even if water is splashed on any part of the outer surface of the exterior sheet, it is possible to prevent the water from entering the inside of the wire harness. Therefore, deterioration of the waterproofness of the wire harness can be further suppressed.
- an exterior sheet having a water-repellent portion on the entire outer surface is easier to manufacture than an exterior sheet having a water-repellent portion partially on the outer surface.
- the exterior sheet is preferably a woven fabric or a nonwoven fabric. According to this configuration, when the wires are bent during routing of the wire harness, the exterior sheet easily follows the shape of the wires. Therefore, wiring of the wire harness can be easily performed.
- the exterior sheet is preferably a woven fabric woven with resin fibers. According to this configuration, the exterior sheet can be easily wound around the outer circumference of the electric wire. [10] Preferably, the exterior sheet has a plurality of meshes, and the water-repellent portion is a film closing the meshes.
- the water-repellent portion prevents water from entering the interior of the exterior sheet through the mesh at a portion of the outer surface of the exterior sheet where the water repellent portion is present.
- the exterior sheet is preferably an elastomer sheet. According to this configuration, it is possible to obtain an exterior sheet having a water-repellent portion without subjecting the outer surface of the exterior sheet to water-repellent finishing or waterproofing.
- the connector has a connector housing that internally holds an end region of the electric wire in the length direction of the electric wire, and a shield shell that covers at least a part of an outer surface of the connector housing. It is preferable that a braided member that covers an outer circumference and contacts the shield shell is provided, and the exterior sheet is wound around the outer circumference of the braided member.
- the exterior sheet can prevent water from adhering to the braided member.
- cylindrical used in this specification does not only refer to those in which a peripheral wall is formed continuously over the entire circumferential direction, but also to those in which a plurality of parts are combined to form a tubular shape, and those in which a C-shaped Also includes those having a gap in a part of the circumferential direction, such as .
- C-shaped perimeter shapes include, but are not limited to, circles, ovals, and polygons with sharp or rounded corners.
- annular as used in the description herein may refer to any structure that forms a loop or continuous shape without ends, as well as structures that are generally loop-shaped.
- Annular shapes include, but are not limited to, circles, ovals, and polygons with pointed or rounded corners.
- the present invention is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.
- a wire harness 10 shown in FIG. 1 is mounted in a vehicle such as a hybrid vehicle or an electric vehicle.
- the wire harness 10 electrically connects two or more in-vehicle devices.
- the wire harness 10 electrically connects two in-vehicle devices.
- Vehicle-mounted devices include, for example, high-voltage batteries, inverters, motors, and electrical connection boxes.
- the electrical connection box accommodates equipment that performs at least one of power supply and signal transmission to the in-vehicle equipment. Examples of electrical connection boxes include relay boxes, fuse boxes, and junction boxes.
- the wire harness 10 electrically connects the inverter and the motor, for example.
- the wire harness 10 includes at least one electric wire 20 , a connector 30 provided at the end of the electric wire 20 , and an exterior sheet 40 covering the outer circumference of the electric wire 20 . Moreover, the wire harness 10 may include a braided member 50 that covers the outer circumference of the electric wire 20 .
- the wire harness 10 includes two electric wires 20, for example.
- the wire harness 10 also includes two connectors 30, for example.
- each electric wire 20 has a conductive core wire 21 and an insulating coating 22 surrounding the core wire 21 and having insulating properties.
- a stranded wire formed by twisting a plurality of metal wires, a columnar conductor formed of a single columnar metal rod having a solid structure inside, a tubular conductor having a hollow structure inside, etc. can be used.
- a combination of at least two of a stranded wire, a columnar conductor, and a cylindrical conductor may be used.
- a material of the core wire 21 for example, a metal material such as a copper-based material or an aluminum-based material can be used.
- the insulating coating 22 covers, for example, the outer circumference of the core wire 21 over the entire circumferential direction around the center line L1 of the electric wire 20 .
- the insulating coating 22 is made of, for example, an insulating resin material.
- center line L1 of the electric wire 20 is illustrated with a dashed line.
- a center line L1 is a line passing through the center of the cross section of the electric wire 20 .
- the length direction X1 of the electric wire 20 is the direction in which the electric wire 20 extends and is the direction along the center line L1.
- each electric wire 20 one end of the two ends of the electric wire 20 in the length direction X1 is called a first end 23a, and the other end is called a second end 23b.
- one connector 30 of the two connectors 30 is provided on each first end 23 a of the electric wire 20 .
- the other connector 30 of the two connectors 30 is provided at the second end 23b of each wire 20 .
- the connector 30 provided at the first end portion 23a is referred to as a first connector 31
- the connector 30 provided at the second end portion 23b is referred to as a second connector 32.
- the first connector 31 and the second connector 32 have, for example, the same configuration. Therefore, only the configuration of the first connector 31 will be described, and the description of the configuration of the second connector 32 will be omitted.
- the first connector 31 includes, for example, terminals 33 electrically connected to the respective wires 20, a connector housing 34 holding the terminals 33, and at least an outer surface of the connector housing 34. and a shield shell 35 covering a part thereof.
- each terminal 33 As a material of each terminal 33, for example, a metal material such as a copper-based material or an aluminum-based material can be used. Each terminal 33 is electrically connected to the first end 23 a of each electric wire 20 . In the end region including the first end 23a of each electric wire 20, the core wire 21 is exposed by removing the insulating coating 22. As shown in FIG. Core wires 21 are electrically connected to terminals 33 in end regions including first end portions 23 a of each electric wire 20 . Core wire 21 is electrically connected to terminal 33 by, for example, one of welding and crimping. In addition, each terminal 33 is electrically connected to a different mating terminal provided in the in-vehicle device. The onboard equipment and the electric wire 20 are electrically connected via each terminal 33 .
- a metal material such as a copper-based material or an aluminum-based material can be used.
- Each terminal 33 is electrically connected to the first end 23 a of each electric wire 20 . In the end region including the first end 23a of each electric
- a connector housing 34 is provided at the first end 23 a of each wire 20 .
- the connector housing 34 internally retains the end region of each wire 20 including the first end 23a. Therefore, the first ends 23 a of the wires 20 are arranged inside the connector housing 34 .
- the connector housing 34 holds each terminal 33 inside the connector housing 34 .
- the connector housing 34 accommodates the connecting portion between each terminal 33 and each electric wire 20 inside.
- Each electric wire 20 protrudes from the connector housing 34 to the outside of the connector housing 34 along, for example, the length direction X1.
- the connector housing 34 is made of, for example, an insulating resin material.
- the shield shell 35 has, for example, an annular shape surrounding the entire circumference of the connector housing 34 when viewed in the length direction X1. Also, the shield shell 35 has, for example, a tubular shape extending in the length direction X1.
- a conductive material is used as the material of the shield shell 35 .
- an aluminum-based metal material is used as the material of the shield shell 35 .
- the braided member 50 is obtained by braiding a plurality of metal strands into, for example, a tubular shape.
- a material of the braided member 50 for example, a metal material such as a copper-based material or an aluminum-based material can be used.
- copper is used as the material of the braided member 50 .
- the braided member 50 collectively covers the outer peripheries of the two electric wires 20, for example. Also, the braided member 50 surrounds, for example, the entire outer peripheries of the two electric wires 20 when viewed from the length direction X1. Further, the braided member 50 covers, for example, the entire portion of each electric wire 20 between the first connector 31 and the second connector 32 in the length direction X1.
- the braided member 50 may contact at least part of the outer peripheral surface of the electric wire 20 .
- the braided member 50 contacts the shield shell 35 of the first connector 31 . That is, the braided member 50 has a contact portion 51 that contacts the shield shell 35 of the first connector 31 .
- the contact portion 51 is, for example, an end region of the braided member 50 including one of both ends of the braided member 50 in the length direction X1.
- the contact portion 51 surrounds, for example, the entire circumference of the shield shell 35 . Then, for example, the inner peripheral surface of the contact portion 51 contacts the outer peripheral surface of the shield shell 35 .
- the wire harness 10 may include a tightening member 52 that fixes the contact portion 51 to the shield shell 35 of the first connector 31 .
- the tightening member 52 is wound around the outer circumference of the contact portion 51 .
- the tightening member 52 tightens the contact portion 51 and the shield shell 35 .
- the contact portion 51 is sandwiched between the outer peripheral surface of the shield shell 35 and the tightening member 52 and contacts both the shield shell 35 and the tightening member 52 .
- a stainless steel band for example, can be used as the tightening member 52 .
- the braided member 50 also contacts the shield shell 35 of the second connector 32 in the same manner.
- the shield shell 35 of the second connector 32 is in contact with an end region of the braided member 50 including the other end of both ends of the braided member 50 in the length direction X1, for example.
- the exterior sheet 40 is composed of a sheet-like member.
- a woven fabric or a non-woven fabric can be used for the exterior sheet 40 .
- a woven fabric woven with resin fibers can be used as the exterior sheet 40.
- a woven fabric in which resin fibers are woven includes, for example, a twisted tube.
- the twisted tube is a tubularly rolled woven fabric woven with PE (polyester) fibers such as PET (polyethylene terephthalate), aramid fibers, or the like.
- PE polyyester
- the twisted tube has a mesh because it has a structure in which resin fibers are woven.
- the exterior sheet 40 is a twisted tube.
- the exterior sheet 40 is wrapped around the outer peripheries of the two electric wires 20 .
- the exterior sheet 40 covers the entire circumference of the two electric wires 20 when viewed from the length direction X1.
- the exterior sheet 40 has a tubular shape extending in the length direction X1 while being wound around the outer circumference of the electric wire 20 .
- the exterior sheet 40 is wound around the outer circumference of the electric wire 20 via the braided member 50 by being wound around the outer circumference of the braided member 50 .
- the length of the exterior sheet 40 in the length direction X1 is shorter than the length of the electric wire 20 in the length direction X1, for example. Also, the length of the exterior sheet 40 in the length direction X1 is shorter than the length of the braided member 50 in the length direction X1, for example.
- Each electric wire 20 and braided member 50 protrudes from both ends of the exterior sheet 40 in the length direction X1 to the outside of the exterior sheet 40 along the length direction X1.
- the wire harness 10 may include tape members 61 that fix the end regions of both ends of the exterior sheet 40 in the length direction X1 to the braided members 50, respectively.
- the tape member 61 is, for example, an adhesive tape. The tape member 61 suppresses displacement of the exterior sheet 40 with respect to the electric wires 20 and the braided member 50 .
- the wire harness 10 may include a fixing member (not shown) wound around at least one location of the exterior sheet 40 in the length direction X1.
- a fixing member for example, an adhesive tape, a binding band, or the like can be used.
- the fixing member prevents the exterior sheet 40 from being deformed so that the outer diameter of the exterior sheet 40 becomes large and at least one of the electric wire 20 and the braided member 50 is exposed. That is, the exterior sheet 40 is easily maintained in a cylindrical shape by the fixing member.
- the inner surface 41 of the exterior sheet 40 may contact the braided member 50 .
- the entire inner surface 41 of the outer sheet 40 may contact the braided member 50 .
- the inner surface 41 of the exterior sheet 40 is a surface facing the inside of the exterior sheet 40 when the exterior sheet 40 is in a cylindrical state, and is a surface exposed to the inside of the exterior sheet 40.
- the outer surface 42 of the outer sheet 40 is a surface exposed to the outside of the outer sheet 40 when the outer sheet 40 is in a cylindrical shape.
- the wire harness 10 may further include an exterior member 70 that partially covers the outer surface 42 of the exterior sheet 40 .
- the wire harness 10 may have only one exterior member 70 or may have a plurality of exterior members 70 .
- the exterior sheet 40 has a portion exposed to the outside without being covered by the exterior member 70 . That is, the exterior sheet 40 has a portion exposed to the outside of the wire harness 10 .
- the exterior member 70 covers a portion of the exterior sheet 40 that may come into contact with components arranged around the wire harness 10 when the wire harness 10 is mounted on the vehicle. Further, the exterior member 70 covers a portion of the exterior sheet 40 that may be hit by flying stones when the vehicle travels, for example, when the wire harness 10 is routed under the floor of the vehicle.
- the exterior member 70 has, for example, a tubular shape surrounding the outer periphery of the exterior sheet 40 .
- the exterior member 70 is, for example, a cylindrical corrugated tube that surrounds the entire outer circumference of the exterior sheet 40 when viewed from the length direction X1.
- the exterior member 70 is not limited to the corrugated tube, and may be a protector that partially covers the outer periphery of the exterior sheet 40 when viewed from the length direction X1.
- the wire harness 10 may further include a first waterproof member 80 .
- a first waterproof member 80 As shown in FIGS. 1 and 3 , the wire harness 10 may further include a first waterproof member 80 .
- the wire harness 10 includes, for example, two first waterproof members 80 .
- One first waterproof member 80 covers the outer peripheries of both the first end 43 a and the first connector 31 .
- the other first waterproof member 80 covers the entire circumference of both the second end 43b and the second connector 32 .
- the two first waterproof members 80 have, for example, the same configuration. Therefore, only one first waterproof member 80 that covers the first end portion 43a and the first connector 31 will be described, and description of the other first waterproof member 80 will be omitted.
- the first waterproof member 80 covers both the first end 43a and the first connector 31 together.
- the first waterproof member 80 has an annular shape that surrounds the entire outer peripheries of the first connector 31 and the exterior sheet 40 when viewed in the length direction X1.
- the first waterproof member 80 has a tubular shape having a first end portion 81a and a second end portion 81b and continuously extending from the first end portion 81a to the second end portion 81b along the length direction X1. .
- the first end portion 81a surrounds the entire circumference of the first connector 31 when viewed in the length direction X1.
- the second end portion 81b surrounds the entire outer periphery of the exterior sheet 40 when viewed from the length direction X1.
- first end 81a and the second end 81b in the length direction X1 are, for example, a contact portion 51 that contacts the shield shell 35 of the first connector 31 and a tightening member wound around the contact portion 51. 52 are located.
- the contact portion 51 and the tightening member 52 wound around the contact portion 51 are positioned inside the first waterproof member 80 .
- the first end portion 81a and the second end portion 81b in the length direction X1 for example, of the two ends of the braided member 50 in the length direction X1, the end portion closer to the first connector 31, The first end portion 43a of the exterior sheet 40 is located there.
- the end closer to the first connector 31 and the first end 43a are located inside the first waterproof member 80 .
- the first waterproof member 80 prevents the portion of the wire harness 10 located inside the first waterproof member 80 from being exposed to water.
- the first waterproof member 80 may have a first contact portion 82 that contacts the outer peripheral surface of the first connector 31 over the entire circumference.
- the first waterproof member 80 has, for example, a first contact portion 82 in an end region including the first end portion 81a of the first waterproof member 80 .
- the first contact portion 82 contacts, for example, the outer peripheral surface of the shield shell 35 of the first connector 31 .
- the first contact portion 82 prevents water from entering the inside of the first waterproof member 80 from between the outer peripheral surface of the first connector 31 and the inner peripheral surface of the first waterproof member 80 .
- the first waterproof member 80 may have a second contact portion 83 that contacts the outer surface 42 of the exterior sheet 40 over the entire circumference.
- the first waterproof member 80 has, for example, a second contact portion 83 in an end region including the second end portion 81b of the first waterproof member 80 .
- the second contact portion 83 prevents water from entering the inside of the first waterproof member 80 from between the outer surface 42 of the exterior sheet 40 and the inner peripheral surface of the first waterproof member 80 .
- a rubber boot for example, can be used as the first waterproof member 80 .
- the first waterproof member 80 is not limited to the rubber boot, and any member made of a water-impermeable material such as an adhesive tape or a heat-shrinkable tube can be used.
- an adhesive tape is used as the first waterproof member 80, the adhesive tape is spirally wound from the outer peripheral surface of the first connector 31 to the end region of the exterior sheet 40 including the first end 43a. Make it cylindrical.
- the wire harness 10 may further include a second waterproof member 90.
- the wire harness 10 includes, for example, two second waterproof members 90 . Note that only one of the two second waterproof members 90 is shown in FIG.
- the second waterproof members 90 are arranged at both ends of the exterior member 70 in the length direction X1. There is a gap G1 between the inner peripheral surface of the end region of the exterior member 70 and the outer surface 42 of the exterior sheet 40 in the length direction X1.
- the second waterproof member 90 closes the gap G1.
- the second waterproof member 90 prevents water from entering the interior of the exterior member 70 from between the inner peripheral surface of the end region of the exterior member 70 in the length direction X1 and the outer surface 42 of the exterior sheet 40. prevent the infiltration of
- a rubber plug can be used as the second waterproof member 90 .
- the second waterproof member 90 has an annular shape and is formed between the inner peripheral surface of the end region of the exterior member 70 in the length direction X1 and the outer surface 42 of the exterior sheet 40. placed in between.
- the outer peripheral surface of the second waterproof member 90 is in close contact with the inner peripheral surface of the end region of the exterior member 70 in the length direction X1 over the entire circumference.
- the inner peripheral surface of the second waterproof member 90 is in close contact with the outer surface 42 over the entire circumference.
- the second waterproof member 90 is not limited to a rubber plug, and may be any member made of a water-impermeable material such as an adhesive tape, a rubber boot, a heat-shrinkable tube, or the like.
- the exterior sheet 40 has a water-repellent portion 45 on at least a portion of the outer surface 42 of the exterior sheet 40 .
- the outer surface 42 repels water.
- the exterior sheet 40 may have a water-repellent portion 45 over at least the entire range exposed to the outside of the exterior member 70 on the outer surface 42 .
- the exterior sheet 40 has a water-repellent portion 45 over the entire outer surface 42 .
- the water-repellent portion 45 is a portion of the outer surface 42 coated with, for example, a fluorine-based water-repellent agent or a silicon-based waterproof agent that imparts a water-repelling function to the outer surface 42 .
- a water-repellent spray for example, can be used to apply the water-repellent agent to the outer surface 42 .
- a waterproof spray can be used to apply the waterproof agent to the outer surface 42 .
- the water-repellent portion 45 can be easily provided on the outer surface 42 by using a water-repellent spray or waterproof spray.
- the coating of the water-repellent agent or waterproof agent on the outer surface 42 may be performed on the exterior sheet 40 before it is wrapped around the outer circumference of the electric wire 20, or it may be applied to the exterior sheet 40 that is wrapped around the outer circumference of the electric wire 20. 40.
- the exterior sheet 40 is wrapped around the outer periphery of the electric wire 20 . Therefore, the space between the exterior sheet 40 and the outer peripheral surfaces of the wires 20 can be reduced.
- the exterior sheet 40 can be arranged in contact with the braided member 50 arranged on the outer circumference of the electric wire 20 . Therefore, the thickness of the air layer between the exterior sheet 40 and the outer peripheral surfaces of the wires 20 can be reduced. Further, when the electric wires 20 generate heat due to energization or the like, the heat is easily transferred from the electric wires 20 to the exterior sheet 40 .
- the wire harness 10 includes at least one electric wire 20 and a connector 30 provided at the end of the electric wire 20 .
- the wire harness 10 also includes an exterior sheet 40 surrounding the outer periphery of the electric wire 20 .
- the exterior sheet 40 is wound around the outer circumference of the electric wire 20 .
- the exterior sheet 40 has a water repellent portion 45 having water repellency on at least a portion of the outer surface 42 of the exterior sheet 40 .
- the exterior sheet 40 is wrapped around the outer circumference of the electric wire 20 . Therefore, the space between the inner surface 41 of the exterior sheet 40 and the outer peripheral surface of the wire 20 can be made smaller than the space between the inner peripheral surface of an exterior member such as a corrugated tube and the outer peripheral surface of the wire. Therefore, since the volume of air between the inner surface 41 of the outer sheet 40 and the outer peripheral surface of the electric wire 20 can be reduced, it is possible to suppress heat buildup inside the outer sheet 40 . Further, the distance between the inner surface 41 of the exterior sheet 40 and the outer peripheral surface of the wire 20 can be made shorter than the distance between the inner peripheral surface of an exterior member such as a corrugated tube and the outer peripheral surface of the wire.
- the heat of the electric wire 20 is easily dissipated from the exterior sheet 40 to the outside of the wire harness 10 . As a result, the heat dissipation of the wire harness 10 can be improved.
- the water-repellent portion 45 on the outer surface 42 of the exterior sheet 40 repels water. Therefore, when the wire harness 10 is exposed to water, the water adhering to the water-repellent portion 45 is likely to drop. Therefore, water adhering to the water-repellent portion 45 is suppressed from entering the inside of the wire harness 10 . Therefore, deterioration of the waterproofness of the wire harness 10 is suppressed.
- the wire harness 10 includes an exterior member 70 that partially covers the outer surface 42 of the exterior sheet 40 .
- the exterior member 70 can protect portions of the electric wires 20 and the exterior sheet 40 that are arranged inside the exterior member 70 .
- the exterior sheet 40 has a water-repellent portion 45 over at least the entire range of the outer surface 42 exposed to the outside of the exterior member 70 . According to this configuration, even if water is splashed on any portion of the portion of the exterior sheet 40 exposed to the outside of the exterior member 70 , the water can be prevented from entering the wire harness 10 . Therefore, deterioration of the waterproofness of the wire harness 10 can be further suppressed.
- the exterior member 70 has a tubular shape surrounding the outer periphery of the exterior sheet 40 .
- the wire harness 10 includes a first waterproof member 80 that covers the entire outer periphery of both the first end portion 43a of the exterior sheet 40 and the first connector 31 .
- the wire harness 10 further includes a first waterproof member 80 that covers the outer peripheries of both the second end portion 43b of the exterior sheet 40 and the second connector 32 over their entire circumferences.
- each first waterproof member 80 can prevent water from entering the exterior sheet 40 from the first end 43a or the second end 43b. Furthermore, the first waterproof members 80 can prevent water from entering the first connector 31 and the second connector 32 . Therefore, deterioration of the waterproofness of the wire harness 10 can be further suppressed.
- the first waterproof member 80 of the present embodiment accommodates inside the portion of the braided member 50 that is exposed to the outside of the exterior sheet 40 from the first end portion 43a. Therefore, it is possible to prevent water from adhering to the portion of the braided member 50 that is exposed to the outside of the exterior sheet 40 from the first end portion 43a. Furthermore, the first waterproof member 80 of the present embodiment accommodates the contact portion 51 and the tightening member 52 inside. Therefore, it is possible to prevent water from adhering to the contact portion 51 and the tightening member 52 . Therefore, even if the contact portion 51 and the shield shell 35 are made of different kinds of metals, the occurrence of galvanic corrosion can be suppressed. Similarly, even if the contact portion 51 and the tightening member 52 are made of different kinds of metals, the occurrence of galvanic corrosion can be suppressed.
- the exterior member 70 has a tubular shape surrounding the outer periphery of the exterior sheet 40 .
- the wire harness 10 includes a second waterproof member 90 that closes the gap G1 between the inner peripheral surface of the end region of the exterior member 70 and the outer surface 42 in the length direction X1.
- the second waterproof member 90 can prevent water from entering the interior of the exterior member 70 from the end of the exterior member 70 in the length direction X1. Therefore, deterioration of the waterproofness of the wire harness 10 can be further suppressed.
- the exterior sheet 40 has a water-repellent portion 45 over the entire outer surface 42 . According to this configuration, even if water is splashed on any part of the outer surface 42 of the exterior sheet 40 , it is possible to prevent the water from entering the wire harness 10 . Therefore, deterioration of the waterproofness of the wire harness 10 can be further suppressed. Moreover, the exterior sheet 40 having the water-repellent portion 45 over the entire outer surface 42 is easier to manufacture than the exterior sheet having the water-repellent portion 45 partially on the outer surface 42 .
- the exterior sheet 40 is a woven fabric or non-woven fabric. According to this configuration, the exterior sheet 40 easily follows the shape of the electric wire 20 when the electric wire 20 is bent during routing of the wire harness 10 . Therefore, wiring of the wire harness 10 can be easily performed.
- the exterior sheet 40 is a woven fabric woven with resin fibers. According to this configuration, the exterior sheet 40 can be easily wound around the outer circumference of the electric wire 20 .
- the connector 30 has a connector housing 34 that internally holds end regions of the wires 20 in the length direction X1, and a shield shell 35 that covers at least a portion of the outer surface of the connector housing 34 .
- the wire harness 10 includes a braided member 50 that covers the outer circumference of the electric wire 20 and contacts the shield shell 35 .
- the exterior sheet 40 is wound around the outer circumference of the braided member 50 .
- the exterior sheet 40 can prevent water from adhering to the braided member 50 . Therefore, it is possible to prevent water from reaching the contact portion 51 along the braided member 50 .
- the braided member 50 and the shield shell 35 are made of different kinds of metals, the occurrence of galvanic corrosion at the contact portion between the braided member 50 and the shield shell 35 can be suppressed.
- the braided member 50 and the tightening member 52 are made of different kinds of metals, the occurrence of galvanic corrosion can be suppressed. Therefore, it is possible to prevent the metal wires forming the braided member 50 from breaking due to corrosion, so that the deterioration of the electromagnetic shielding performance of the braided member 50 can be suppressed.
- the wire harness 10A of the second embodiment has a configuration in which an exterior sheet 40A is provided in place of the exterior sheet 40 in the wire harness 10 of the first embodiment.
- the exterior sheet 40A is an elastomer sheet.
- the elastomer one having a property of repelling water is used. Therefore, the entire outer surface 42 of the exterior sheet 40A has water repellency. That is, the outer sheet 40A has the water-repellent portion 45 over the entire outer surface 42 .
- the exterior sheet 40A is wound around the wire 20 from above the braided member 50, for example.
- 40 A of exterior sheets cover the outer periphery of the two electric wires 20 over the perimeter, seeing from the length direction X1.
- the exterior sheet 40A has a tubular shape extending in the length direction X1 while being wound around the outer circumference of the electric wire 20 .
- the length of the exterior sheet 40A in the length direction X1 is, for example, equal to the length of the exterior sheet 40 of the first embodiment in the length direction X1.
- the exterior sheet 40 is fixed to the braided member 50 by a tape member 61, for example.
- the inner surface 41 of the outer sheet 40A may contact the braided member 50 .
- the entire inner surface 41 of the exterior sheet 40A may contact the braided member 50 .
- the wire harness 10A may include a second waterproof member 90A instead of the second waterproof member 90 of the first embodiment.
- the wire harness 10A includes, for example, two second waterproof members 90A. Note that FIG. 5 shows only one of the two second waterproof members 90A. 90 A of 2nd waterproof members are each arrange
- An adhesive tape may be used as the second waterproof member 90A.
- the second waterproof member 90A spirals continuously on the outer peripheral surface of the end region of the exterior member 70 in the length direction X1 and the outer surface 42 of the exterior sheet 40A adjacent to the end region in the length direction X1. wrapped in a shape.
- the second waterproof member 90A has a tubular shape extending in the length direction X1.
- the second waterproof member 90A is in close contact with the outer peripheral surface of the end region of the exterior member 70 in the length direction X1 over the entire circumference. Furthermore, the second waterproof member 90A is in close contact with the outer surface 42 over the entire circumference.
- the second waterproof member 90A closes the gap G1 between the inner peripheral surface of the end region of the exterior member 70 in the length direction X1 and the outer surface 42 of the exterior sheet 40A.
- the second waterproof member 90A prevents water from entering the interior of the exterior member 70 from between the inner peripheral surface of the end region of the exterior member 70 in the length direction X1 and the outer surface 42 of the exterior sheet 40A. prevent the infiltration of
- the same effects as those of the first embodiment are obtained.
- the effects (1-1) to (1-6) and (1-9) of the first embodiment the following effects are obtained.
- the outer sheet 40A is an elastomer sheet. According to this configuration, the exterior sheet 40A having the water-repellent portion 45 can be obtained without subjecting the outer surface 42 of the exterior sheet 40A to water-repellent finishing or waterproofing.
- the braided member 50 may be formed by knitting a plurality of metal wires into a sheet instead of tubularly knitting a plurality of metal wires. In this case, the braided member 50 is wound around the outer circumference of the electric wire 20 .
- each of the wire harnesses 10 and 10A may be provided with metal foil instead of the braided member 50 . Even in this case, the same effect as (1-9) of the first embodiment can be obtained.
- the wire harness 10 may not include the braided member 50 .
- the inner surface 41 of the exterior sheet 40 may contact the outer peripheral surface of the electric wire 20 .
- the exterior sheet 40 may contact the outer peripheral surface of a component that is arranged inside the exterior sheet 40 and that is adjacent in the direction perpendicular to the length direction X1. The same may be applied to the wire harness 10A of the second embodiment.
- the connector 30 may not include the shield shell 35 .
- At least one of the outer surface 42 and the inner surface 41 of the exterior sheet 40A of the second embodiment may have a plurality of irregularities. With this configuration, the exterior sheet 40A can easily follow the shape of the electric wire 20 when the electric wire 20 is bent when the wire harness 10A is routed. Therefore, wiring of the wire harness 10A can be easily performed.
- the exterior sheet 40 has a plurality of meshes 101 .
- the exterior sheet 40 may have a plurality of meshes 101 . Therefore, in the wire harness 10 of the first embodiment, the water-repellent portion 45 may be a film closing the mesh 101 . In this way, even if the exterior sheet 40 has the mesh 101, the water repellent portion 45 prevents water from passing through the mesh 101 to the inside of the exterior sheet 40 at the portion where the water repellent portion 45 is present on the outer surface 42 of the exterior sheet 40 . Intrusion of water can be suppressed. As a result, the waterproofness of the wire harness 10 can be improved.
- An exterior member 70B shown in FIG. 8 may be provided in the wire harness 10 of the first embodiment.
- the exterior member 70B is provided in the wire harness 10 in place of the exterior member 70 of the first embodiment.
- the exterior member 70B partially covers the outer surface 42 of the exterior sheet 40 .
- the exterior member 70 ⁇ /b>B has a tubular shape surrounding the outer periphery of the exterior sheet 40 .
- the exterior member 70B is, for example, a corrugated tube surrounding the outer periphery of the exterior sheet 40 .
- the exterior member 70B has a drain portion 71 penetrating inside and outside the exterior member 70B along a direction intersecting the length direction X1.
- the drain part 71 penetrates inside and outside the exterior member 70B along a direction orthogonal to the length direction X1, for example.
- the drain portion 71 has, for example, a slit shape extending in the length direction X1.
- the length direction X1 corresponds to the direction perpendicular to the paper surface.
- the shape of the water draining portion 71 is not limited to the slit shape, and may be any shape such as a hole shape, as long as the water can be discharged from the inside of the exterior member 70B to the outside. With this configuration, when water enters the interior of the exterior member 70B, the water can be discharged from the drain portion 71 to the exterior of the exterior member 70B.
- the exterior sheet 40 preferably has a water-repellent portion 45 over at least the entire outer surface 42 of the portion of the exterior sheet 40 that is arranged inside the exterior member 70B.
- the exterior member 70 may be changed to an exterior member 70B.
- the wire harness 10A does not have to include the second waterproof member 90 .
- the exterior sheet 40 has the water-repellent portion 45 over the entire outer surface 42 .
- the outer sheet 40 only needs to have the water-repellent portion 45 on at least part of the outer surface 42 .
- the exterior sheet 40 may have the water-repellent portion 45 only on a portion of the outer surface 42 that may be exposed to water when the wire harness 10 is mounted on the vehicle.
- the exterior sheet 40 may have a water-repellent portion 45 in a part of the outer surface 42 including a range exposed to the outside of the exterior member 70 in the outer surface 42 .
- the wire harness 10 may include the second waterproof member 90A of the second embodiment instead of the second waterproof member 90.
- the wire harness 10A may include the second waterproof member 90 of the first embodiment instead of the second waterproof member 90A.
- the wire harness 10 does not have to include either one of the two second waterproof members 90 . Moreover, the wire harness 10 may not include the second waterproof member 90 .
- the exterior sheet 40 preferably has a water-repellent portion 45 over at least the entire outer surface 42 of the portion of the exterior sheet 40 that is arranged inside the exterior member 70 .
- the wire harness 10A does not have to include either one of the two second waterproof members 90A. Also, the wire harness 10A does not have to include the second waterproof member 90A.
- the shape of the first waterproof member 80 may be changed.
- the first waterproof member 80 may have a shape that collectively covers the outer peripheries of both the first end portion 43a and the first connector 31 over the entire circumference.
- the first waterproof member 80 may have a shape that collectively covers the outer peripheries of both the second end portion 43b and the second connector 32 over the entire circumference.
- the first waterproof member 80 may not have the second contact portion 83 .
- the wire harness 10 is preferably mounted on the vehicle with the second end portion 81b positioned below the first end portion 81a.
- the second embodiment may be similarly modified.
- the wire harness 10 does not need to be equipped with the 1st waterproof member 80.
- the wire harness 10 does not need to be equipped with the exterior member 70.
- the first connector 31 and the second connector 32 may have different configurations. Also, the wire harness 10 may have only one of the first connector 31 and the second connector 32 .
- the second embodiment may be similarly modified.
- the number of wires 20 included in the wire harness 10 of the first embodiment is not limited to two, and may be one or three or more. Also, the number of connectors 30 included in the wire harness 10 may be appropriately changed according to the number of electric wires 20 and the specifications of the wire harness 10 .
- the exterior member 70 continues along the length direction X1 from the first end, which is one end of the exterior member 70, to the second end, which is the other end. It may have an elongated cylindrical shape. As shown in FIG. 8, the draining portion 71 may pass through the exterior member 70B along a direction orthogonal to the length direction X1 to allow communication between the inside and the outside of the exterior member 70B.
- the exterior sheet 40 may be wrapped around the outer periphery of the electric wire 20 and may have a portion exposed to the outside without being surrounded by other members. As shown in FIG. 2 , both edges in the circumferential direction of the exterior sheet 40 may overlap each other.
- the shield shell 35 may have a tubular portion and a flange portion extending radially outward from the outer peripheral surface of the tubular portion.
- the flange portion may have an annular shape extending all around the shield shell 35 in the circumferential direction.
- the flange portion may be provided in the end region of the cylindrical portion in the length direction X1.
- the first contact portion 82 of the first sealing member 80 is in close contact with the outer peripheral surface of the tubular portion of the shield shell 35 in a direction intersecting the length direction X1 of the electric wire 20, and the joint between the tubular portion and the flange portion.
- the electric wire 20 may be in close contact with the stepped surface between the electric wires 20 in the length direction X1.
- the second contact portion 83 of the first seal member 80 may contact the outer surface 42 of the exterior sheet 40 in a direction intersecting the length direction X1 of the electric wire 20 .
- the length direction X1 of the electric wire 20 may be referred to as the axial direction of the first waterproof member 80
- the direction crossing the length direction X1 of the electric wire 20 may be referred to as the radial direction of the first waterproof member 80 .
- the first waterproof member 80 may cover the entire outer circumference of the braided member 50 so that the inner peripheral surface of the first waterproof member 80 does not come into contact with the braided member 50 .
- the inner peripheral surface of the first waterproof member 80 may contact the outer peripheral surface of the tightening member 52 .
- the inner peripheral surface of the first waterproof member 80 may contact the outer peripheral surface of the tape member 61 .
- This disclosure includes the following implementation examples. Some components of the exemplary embodiments have been numbered as an aid to understanding and not for limitation. Some of the matters described in the implementation examples below may be omitted, and some of the matters described in the implementation examples may be selected or extracted and combined.
- the first waterproof member (80) is a first waterproof member (80) that is in close contact with the outer peripheral surface of the connector (30) in a direction that intersects the length direction (X1) of the electric wire. You may have 1 adhesion
- the shield shell (35) has a tubular portion and a flange portion extending radially outward of the tubular portion from an outer peripheral surface of the tubular portion.
- the first contact portion (82) is in contact with the outer peripheral surface of the cylindrical portion in the intersecting direction, and the electric wire is attached to the stepped surface between the cylindrical portion and the flange portion. You may contact
- the first waterproof member (80) is arranged in a direction that intersects the length direction (X1) of the electric wire with respect to the outer surface (42) of the exterior sheet (40). You may have the 2nd contact
- Reference Signs List 10 10A wire harness 20 electric wire 21 core wire 22 insulation coating 23a first end 23b second end 30 connector 31 first connector (connector) 32 second connector (connector) 33 terminal 34 connector housing 35 shield shell 40, 40A exterior sheet 41 inner surface 42 outer surface 43a first end 43b second end 45 water repellent portion 50 braid member 51 contact portion 52 tightening member 61 tape member 70, 70B exterior member 71 Drainage portion 80 First waterproof member 81a First end 81b Second end 82 First contact portion 83 Second contact portion 90, 90A Second waterproof member 101 Mesh G1 Gap L1 Center line X1 Length direction
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Abstract
Description
最初に本開示の実施態様を列記して説明する。
本開示のワイヤハーネスは、
[1]少なくとも1つの電線と、前記電線の端部に設けられるコネクタと、を備えるワイヤハーネスであって、前記電線の外周を囲む外装シートを備え、前記外装シートは、前記電線の外周に巻き付けられており、前記外装シートの外面の少なくとも一部に撥水性を有する撥水部を有するワイヤハーネスである。
この構成によれば、外装部材によって、電線及び外装シートにおける外装部材の内側に配置される部分を保護できる。
この構成によれば、外装シートにおける外装部材の外部に露出した部分のいずれの部位に水がかかっても、当該水がワイヤハーネスの内部に浸入することを抑制できる。従って、当該ワイヤハーネスにおける防水性の低下をより抑制できる。
この構成によれば、外装シートの外面におけるいずれの部位に水がかかっても、当該水がワイヤハーネスの内部に浸入することを抑制できる。従って、当該ワイヤハーネスにおける防水性の低下をより一層抑制できる。また、外面に部分的に撥水部を有する外装シートに比べて、外面全体に撥水部を有する外装シートは容易に製造される。
この構成によれば、ワイヤハーネスの配索時に電線が曲げられる場合、外装シートは、電線の形状に追従しやすい。従って、ワイヤハーネスの配索を容易に行うことができる。
この構成によれば、外装シートを電線の外周に容易に巻き付けることができる。
[10]前記外装シートは、複数の網目を有し、前記撥水部は、前記網目を塞ぐ膜であることが好ましい。
この構成によれば、外装シートの外面に撥水加工もしくは防水加工などの撥水性を付与する加工を施さなくとも、撥水部を有する外装シートを得ることができる。
[本開示の実施形態の詳細]
本開示のワイヤハーネスの具体例を、以下に図面を参照しつつ説明する。各図面では、説明の便宜上、構成の一部を誇張または簡略化して示す場合がある。また、各図面において、各部分の寸法比率は、実際のものと、または別の図中のものと異なる場合がある。本明細書における「直交」は、厳密に直交する場合のみではなく、本実施形態における作用効果を奏する範囲内で概ね直交する場合も含まれる。また、本明細書で使用される「筒状」という用語は、周方向全周にわたって連続して周壁が形成されるものだけではなく、複数の部品を組み合わせて筒状をなすものや、C字形のように周方向の一部にギャップを有するものも含む。また、「筒状」の外縁形状には、円形、楕円形、及び、尖った角または丸い角を有する多角形が含まれるが、これらに限定されない。また、本明細書の説明で使用される「環状」という用語は、ループを形成する任意の構造、または端部のない連続形状、並びに、全体としてループ形状をなす構造を指すことがある。「環状」の形状には、円形、楕円形、及び尖ったまたは丸い角を有する多角形が含まれるが、これらに限定されない。なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。
以下、ワイヤハーネスの第1実施形態について説明する。
(ワイヤハーネス10の全体構成)
図1に示すワイヤハーネス10は、例えばハイブリッド車や電気自動車等の車両に搭載される。ワイヤハーネス10は、2個以上の車載機器を電気的に接続する。例えば、ワイヤハーネス10は、2個の車載機器を電気的に接続する。車載機器としては、例えば、高圧バッテリ、インバータ、モータ、電気接続箱などが挙げられる。なお、電気接続箱は、車載機器に対して電力供給及び信号伝達の少なくとも一方を行う機器を収容するものである。電気接続箱としては、例えば、リレーボックス、ヒューズボックス、ジャンクションボックスなどが挙げられる。ワイヤハーネス10は、例えばインバータとモータとを電気的に接続する。
図1及び図2に示すように、各電線20は、導電性を有する芯線21と、芯線21の外周を囲むとともに絶縁性を有する絶縁被覆22とを有する。
(コネクタ30の構成)
図1に示すように、2つのコネクタ30のうち一方のコネクタ30は、電線20の各々の第1端部23aに設けられる。2つのコネクタ30のうち他方のコネクタ30は、電線20の各々の第2端部23bに設けられる。ここで、第1端部23aに設けられるコネクタ30を第1コネクタ31、第2端部23bに設けられるコネクタ30を第2コネクタ32とする。
図1及び図3に示すように、第1コネクタ31は、例えば、各電線20にそれぞれ電気的に接続される端子33と、端子33を保持するコネクタハウジング34と、コネクタハウジング34の外面の少なくとも一部を覆うシールドシェル35とを有する。
各端子33の材料としては、例えば、銅系やアルミニウム系などの金属材料を用いることができる。各端子33には、各電線20の第1端部23aが電気的に接続される。各電線20における第1端部23aを含む端部領域は、絶縁被覆22が除去されることにより芯線21が露出している。各電線20における第1端部23aを含む端部領域において、芯線21がそれぞれ端子33に電気的に接続される。芯線21は、例えば溶接及び圧着のうちのいずれかの方法で、端子33に電気的に接続される。なお、各端子33は、車載機器が備える異なる相手端子にそれぞれ電気的に接続される。各端子33を介して車載機器と電線20とが電気的に接続される。
コネクタハウジング34は、電線20の各々の第1端部23aに設けられる。コネクタハウジング34は、各電線20における第1端部23aを含む端部領域を内部に保持する。このため、コネクタハウジング34の内部には、各電線20の第1端部23aが配置される。また、コネクタハウジング34は、同コネクタハウジング34の内部に各端子33を保持する。そして、コネクタハウジング34は、各端子33と各電線20との接続部分を内部に収容する。各電線20は、例えば長さ方向X1に沿って、コネクタハウジング34から同コネクタハウジング34の外部に突出する。コネクタハウジング34は、例えば絶縁性の樹脂材料で構成される。
シールドシェル35は、例えば、長さ方向X1から見てコネクタハウジング34の外周を全周にわたって囲む環状をなす。また、シールドシェル35は、例えば、長さ方向X1に延びる筒状をなす。シールドシェル35の材料としては、導電性を有する材料が用いられる。例えば、シールドシェル35の材料としては、アルミニウム系の金属材料が用いられる。
図1~図3に示すように、編組部材50は、複数の金属素線が例えば筒状に編み込まれたものである。編組部材50の材料としては、例えば、銅系やアルミニウム系などの金属材料を用いることができる。例えば、編組部材50の材料として銅を用いる。編組部材50は、例えば2つの電線20の外周を一括して覆う。また、編組部材50は、例えば、長さ方向X1から見て2つの電線20の外周を全周にわたって囲む。更に、編組部材50は、例えば、各電線20における第1コネクタ31と第2コネクタ32との間の部分を、長さ方向X1の全体にわたって覆う。編組部材50は、電線20の外周面の少なくとも一部に接触してもよい。
図1及び図2に示すように、外装シート40は、シート状の部材で構成されている。外装シート40には、例えば、織布もしくは不織布を用いることができる。例えば、外装シート40として、樹脂繊維が編み込まれた織布を用いることができる。樹脂繊維が編み込まれた織布としては、例えばツイストチューブが挙げられる。ツイストチューブは、例えばPET(ポリエチレンテレフタレート)などのPE(ポリエステル)繊維やアラミド繊維などが編み込まれた織布が筒状に丸まっているものである。ツイストチューブは、樹脂繊維が編み込まれた構造であるために、網目を有する。例えば、外装シート40は、ツイストチューブである。
図1に示すように、ワイヤハーネス10は、外装シート40の外面42の一部を覆う外装部材70を更に備えてもよい。ワイヤハーネス10は、外装部材70を1つのみ備えてもよいし、複数備えてもよい。ただし、外装シート40は、外装部材70に覆われることなく外部に露出する部分を有する。即ち、外装シート40は、ワイヤハーネス10の外部に露出する部分を有する。
図1及び図3に示すように、ワイヤハーネス10は、第1防水部材80を更に備えてもよい。ここで、長さ方向X1における外装シート40の両端のうち、一方の端部を第1端部43a、他方の端部を第2端部43bとする。なお、第1端部43aは、第1コネクタ31に近い位置にある。第2端部43bは、第2コネクタ32に近い位置にある。ワイヤハーネス10は、例えば2つの第1防水部材80を備える。一方の第1防水部材80は、第1端部43a及び第1コネクタ31の両者の外周を全周にわたって覆う。他方の第1防水部材80は、第2端部43b及び第2コネクタ32の両者の外周を全周にわたって覆う。
図4に示すように、ワイヤハーネス10は、第2防水部材90を更に備えてもよい。ワイヤハーネス10は、例えば2つの第2防水部材90を備える。なお、図4には、2つの第2防水部材90のうち1つのみ図示している。第2防水部材90は、長さ方向X1における外装部材70の両端にそれぞれ配置される。長さ方向X1における外装部材70の端部領域の内周面と、外装シート40の外面42との間には、隙間G1がある。第2防水部材90は、隙間G1を塞ぐ。第2防水部材90は、隙間G1を塞ぐことにより、長さ方向X1における外装部材70の端部領域の内周面と、外装シート40の外面42との間から、外装部材70の内部に水が浸入することを抑制する。
図1及び図2に示すように、外装シート40は、同外装シート40の外面42の少なくとも一部に撥水性を有する撥水部45を有する。撥水部45では、外面42が水を弾く。外装シート40は、外面42における少なくとも外装部材70の外部に露出する範囲の全体にわたって撥水部45を有してもよい。例えば、外装シート40は、外面42の全体にわたって撥水部45を有する。
本実施形態の作用について説明する。
外装シート40は、電線20の外周に巻き付けられる。そのため、外装シート40と電線20の外周面との間の空間を小さくすることができる。例えば、外装シート40を、電線20の外周に配置される編組部材50に接触する状態に配置できる。このため、外装シート40と電線20の外周面との間の空気の層の厚さを薄くできる。また、電線20が通電などにより発熱した場合に、電線20から外装シート40に熱が伝達されやすくなる。
(1-1)ワイヤハーネス10は、少なくとも1つの電線20と、電線20の端部に設けられるコネクタ30と、を備える。また、ワイヤハーネス10は、電線20の外周を囲む外装シート40を備える。外装シート40は、電線20の外周に巻き付けられている。外装シート40は、外装シート40の外面42の少なくとも一部に撥水性を有する撥水部45を有する。
この構成によれば、外装部材70によって、電線20及び外装シート40における外装部材70の内側に配置される部分を保護できる。
この構成によれば、外装シート40における外装部材70の外部に露出した部分のいずれの部位に水がかかっても、当該水がワイヤハーネス10の内部に浸入することを抑制できる。従って、当該ワイヤハーネス10における防水性の低下をより抑制できる。
この構成によれば、外装シート40の外面42におけるいずれの部位に水がかかっても、当該水がワイヤハーネス10の内部に浸入することを抑制できる。従って、当該ワイヤハーネス10における防水性の低下をより一層抑制できる。また、外面42に部分的に撥水部45を有する外装シートに比べて、外面42の全体に撥水部45を有する外装シート40は容易に製造される。
(1-9)コネクタ30は、長さ方向X1における電線20の端部領域を内部に保持するコネクタハウジング34と、コネクタハウジング34の外面の少なくとも一部を覆うシールドシェル35とを有する。ワイヤハーネス10は、電線20の外周を覆い且つシールドシェル35に接触する編組部材50を備える。外装シート40は、編組部材50の外周に巻き付けられている。
以下、ワイヤハーネスの第2実施形態について説明する。なお、本第2実施形態では、上記第1実施形態と同一の構成もしくは対応する構成に同一の符号を付してその説明を省略する。
図6に示すように、第2実施形態のワイヤハーネス10Aは、上記第1実施形態のワイヤハーネス10において、外装シート40に代えて外装シート40Aを備える構成である。
外装シート40Aは、エラストマ製のシートである。エラストマとしては、水を弾く性質を有するものを使用する。そのため、外装シート40Aの外面42は、全体が撥水性を有する。即ち、外装シート40Aは、外面42の全体にわたって撥水部45を有する。
図5に示すように、ワイヤハーネス10Aは、上記第1実施形態の第2防水部材90に代えて第2防水部材90Aを備えてもよい。第2防水部材90Aは、ワイヤハーネス10Aは、例えば2つの第2防水部材90Aを備える。なお、図5には、2つの第2防水部材90Aのうち1つのみ図示している。第2防水部材90Aは、長さ方向X1における外装部材70の両端にそれぞれ配置される。
本第2実施形態によれば、上記第1実施形態の(1-1)~(1-6),(1-9)と同様の効果に加えて、以下の効果を奏する。
・編組部材50は、複数の金属素線が筒状に編み込まれたもの以外に、複数の金属素線がシート状に編まれたものを用いることもできる。この場合、編組部材50は、電線20の外周に巻き付けられる。また、ワイヤハーネス10,10Aの各々は、編組部材50に代えて、金属箔を備えてもよい。この場合においても、上記第1実施形態の(1-9)と同様の効果を奏することができる。
・上記第2実施形態の外装シート40Aは、外面42及び内面41の少なくとも一方に複数の凹凸を有していてもよい。このようにすると、ワイヤハーネス10Aの配索時に電線20が曲げられる場合、外装シート40Aは、電線20の形状に追従しやすくなる。従って、ワイヤハーネス10Aの配索を容易に行うことができる。
・上記第1実施形態において、ワイヤハーネス10は、外装部材70を備えなくてもよい。上記第2実施形態のワイヤハーネス10Aについても同様である。
前記第1密着部(82)は、前記筒状部の外周面に対して前記交差する方向に密着するとともに、前記筒状部と前記フランジ部との間の段差面に対して前記電線の長さ方向(X1)に密着してもよい。
20 電線
21 芯線
22 絶縁被覆
23a 第1端部
23b 第2端部
30 コネクタ
31 第1コネクタ(コネクタ)
32 第2コネクタ(コネクタ)
33 端子
34 コネクタハウジング
35 シールドシェル
40,40A 外装シート
41 内面
42 外面
43a 第1端部
43b 第2端部
45 撥水部
50 編組部材
51 接触部
52 締付部材
61 テープ部材
70,70B 外装部材
71 水抜き部
80 第1防水部材
81a 第1端部
81b 第2端部
82 第1密着部
83 第2密着部
90,90A 第2防水部材
101 網目
G1 隙間
L1 中心線
X1 長さ方向
Claims (12)
- 少なくとも1つの電線と、
前記電線の端部に設けられるコネクタと、を備えるワイヤハーネスであって、
前記電線の外周を囲む外装シートを備え、
前記外装シートは、前記電線の外周に巻き付けられており、前記外装シートの外面の少なくとも一部に撥水性を有する撥水部を有するワイヤハーネス。 - 前記外装シートの前記外面の一部を覆う外装部材を備える請求項1に記載のワイヤハーネス。
- 前記外装シートは、前記外面における少なくとも前記外装部材の外部に露出する範囲の全体にわたって前記撥水部を有する請求項2に記載のワイヤハーネス。
- 前記外装部材は、前記外装シートの外周を囲む筒状をなし、
前記電線の長さ方向における前記外装シートの端部及び前記コネクタの両者の外周を全周にわたって覆う第1防水部材を備える請求項2または請求項3に記載のワイヤハーネス。 - 前記外装部材は、前記外装シートの外周を囲む筒状をなし、
前記電線の長さ方向における前記外装部材の端部領域の内周面と前記外面との間の隙間を塞ぐ第2防水部材を備える請求項2から請求項4のいずれか1項に記載のワイヤハーネス。 - 前記外装部材は、前記外装シートの外周を囲む筒状をなしており、前記電線の長さ方向と交差する方向に沿って前記外装部材の内外に貫通する水抜き部を有する請求項2から請求項5のいずれか1項に記載のワイヤハーネス。
- 前記外装シートは、前記外面の全体にわたって前記撥水部を有する請求項1から請求項6のいずれか1項に記載のワイヤハーネス。
- 前記外装シートは、織布もしくは不織布である請求項1から請求項7のいずれか1項に記載のワイヤハーネス。
- 前記外装シートは、樹脂繊維が編み込まれた織布である請求項1から請求項8のいずれか1項に記載のワイヤハーネス。
- 前記外装シートは、複数の網目を有し、
前記撥水部は、前記網目を塞ぐ膜である請求項1から請求項9のいずれか1項に記載のワイヤハーネス。 - 前記外装シートは、エラストマ製のシートである請求項1から請求項7のいずれか1項に記載のワイヤハーネス。
- 前記コネクタは、前記電線の長さ方向における前記電線の端部領域を内部に保持するコネクタハウジングと、前記コネクタハウジングの外面の少なくとも一部を覆うシールドシェルとを有し、
前記電線の外周を覆い且つ前記シールドシェルに接触する編組部材を備え、
前記外装シートは、前記編組部材の外周に巻き付けられている請求項1から請求項11のいずれか1項に記載のワイヤハーネス。
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| JP2015139311A (ja) * | 2014-01-23 | 2015-07-30 | 住友電装株式会社 | 電線モジュール及び弾性部材付コルゲートチューブ |
| JP2017010653A (ja) * | 2015-06-17 | 2017-01-12 | 住友電装株式会社 | グロメット用防水シートおよびワイヤハーネス |
| JP2018107020A (ja) * | 2016-12-27 | 2018-07-05 | 住友電装株式会社 | ハーネス及びハーネスの製造方法 |
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| US3789099A (en) * | 1971-11-09 | 1974-01-29 | Western Electric Co | Methods of manufacturing waterproof cable |
| US4537225A (en) * | 1981-11-16 | 1985-08-27 | Mcnulty Frank E | Conduit having waterproof layer of uniform thickness and method of manufacture |
| US20020098311A1 (en) * | 1999-09-02 | 2002-07-25 | Michael Lindner | Protective sheathing |
| JP6274765B2 (ja) * | 2012-12-25 | 2018-02-07 | 矢崎総業株式会社 | ワイヤハーネス |
| US9277684B2 (en) * | 2013-03-13 | 2016-03-01 | Federal-Mogul Powertrain, Inc. | Self-wrapping EMI shielding textile sleeve and method of construction thereof |
| JP6061960B2 (ja) | 2015-01-08 | 2017-01-18 | 矢崎総業株式会社 | 止水構造及びワイヤハーネス |
| JP7074008B2 (ja) * | 2018-09-28 | 2022-05-24 | 株式会社オートネットワーク技術研究所 | ワイヤハーネス |
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| JP2015139311A (ja) * | 2014-01-23 | 2015-07-30 | 住友電装株式会社 | 電線モジュール及び弾性部材付コルゲートチューブ |
| JP2017010653A (ja) * | 2015-06-17 | 2017-01-12 | 住友電装株式会社 | グロメット用防水シートおよびワイヤハーネス |
| JP2018107020A (ja) * | 2016-12-27 | 2018-07-05 | 住友電装株式会社 | ハーネス及びハーネスの製造方法 |
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| US20250087383A1 (en) | 2025-03-13 |
| US12555701B2 (en) | 2026-02-17 |
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