WIRING HARNESS ASSEMBLY

Abstract

A wire harness assembly comprises: a wire harness (3) comprising an electric wire (7) and a connector (9) electrically connected to one end of the electric wire (7); and a soundproofing member (5) comprising a base (11) and a cover (13) integrally provided on one surface side of the base (11) with the wire harness (3) being arranged between the base (11) and the cover (13). At least one of the base (11) or the cover (13) comprises through holes (15). The through holes (15) are arranged to be distributed in the opening regions (17A, 17B, 17C). The opening regions (17A, 17B, 17C) are different from each other in terms of the aperture ratios per unit area of ​​the through holes (15) in the opening regions (17A, 17B, 17C). Figure 1

Description

Title of the invention: ELECTRICAL HARNESS ASSEMBLY Technical field

[0001] The present invention relates to an electrical harness assembly. Context

[0002] JP 2015-67085 A discloses a wire harness assembly which comprises a wire harness including an electric wire and a connector electrically connected to one end of the electric wire. The wire harness assembly comprises a porous body as a base and a sheet-shaped body as a cover integrally provided on one surface side of the porous body. A sound-absorbing member in which the wire harness is arranged is provided between the porous body and the sheet-shaped body. In the wire harness assembly, a plurality of through holes are provided in the sheet-shaped body. By providing the plurality of through holes in the sheet-shaped body, sound can be absorbed in a wider frequency range compared to a sheet-shaped body having no through holes, and sound-absorbing properties can be improved. Summary

[0003] In the above-described wire harness assembly, the plurality of through holes is provided, uniformly, over the entire surface of the soundproofing member. In a case in which the plurality of through holes is provided, uniformly, the frequency range, in which a sound can be absorbed, is the same in any position of the soundproofing member. For this reason, in the soundproofing member of the above-described wire harness assembly, there is a limit to a frequency range in which a sound can be absorbed.

[0004] An object of the present invention is to provide an electrical harness assembly having improved soundproofing properties.

[0005] A wire harness assembly according to the present invention comprises: a wire harness comprising an electric wire and a connector electrically connected to one end of the electric wire; and a soundproofing member comprising a base and a cover integrally provided on one surface side of the base, with the wire harness being arranged between the base and the cover. At least one of the base or the cover comprises through holes. The through holes are arranged to be distributed over opening regions. The opening regions are different from each other in terms of aperture ratios per unit area of ​​through holes in the aperture regions.

[0006] Optionally, the opening regions are different from each other in at least one of the shapes of the through holes or one of the intervals between adjacent through holes.

[0007] According to the configuration described above, the soundproofing properties of the electrical harness assembly can be improved. Brief description of the drawings

[0008] [Fig-1] [Fig.l] is a perspective view of an electrical harness assembly according to one embodiment.

[0009] [Fig.2] [Fig.2] is an exploded perspective view of the beam assembly electrical according to the present embodiment.

[0010] [Fig.3] [Fig.3] is a top view of a cover of the harness assembly electrical according to the present embodiment. Detailed description

[0011] An electrical harness assembly 1 according to one embodiment is described in detail below with reference to the drawings. It should be noted that the dimensional ratios in the drawings are exaggerated for ease of explanation, and may be different from the actual ratios.

[0012] As illustrated in [Fig.l], the wiring harness assembly 1 according to the present embodiment is applied, for example, to a wiring harness 3 that electrically connects electrical components (not shown), for example, by connecting a power supply mounted on a vehicle and a device or by connecting a device and a device. The wiring harness 3 is arranged in a predetermined shape inside a soundproofing member 5 integrally assembled therewith. The wiring harness assembly 1 is assembled to a target member (not shown), for example, a door trim of a vehicle. The soundproofing member 5 assembled to the target member absorbs, for example, sound propagating from outside to inside the vehicle to maintain quietness inside the vehicle.

[0013] As illustrated in Figures 1 to 3, the electrical harness assembly 1 comprises an electrical harness 3 and a soundproofing element 5.

[0014] As illustrated in Figures 1 to 3, the electrical harness 3 comprises an electrical wire 7 and a connector 9.

[0015] The electric wire 7 comprises, for example, a sheathed electric wire in which an outer periphery of a core wire made of a conductive material is sheathed with an insulating sheath, and a plurality (four in the present embodiment) of electric wires 7 are used. The electric wire 7 may be a flat cable in wherein the outer peripheries of a plurality of core wires are sheathed with an insulating sheath in a state in which the plurality of core wires are arranged in parallel. The plurality of electric wires 7 are arranged so that the ends are exposed, for example the ends are exposed on both sides thereof, from the soundproofing member 5. The plurality of electric wires 7 are arranged so that the ends on one side are gathered at one location, and the ends on the other side are plugged.

[0016] The connector 9 comprises, for example, a housing (not shown) made of an insulating material such as a synthetic resin and a terminal (not shown) made of a conductive material. The housing can be mounted, for example, on a coupling housing (not shown) of a coupling connector (not shown) electrically connected to an electrical component mounted on the vehicle. The terminal is electrically connected to the end of the electric wire 7 and is housed in the housing. The terminal is electrically connected to a coupling terminal (not shown) housed in the coupling housing by mounting / fitting the housing onto / to the coupling housing. A plurality (five in the present embodiment) of connectors 9 is used to correspond to the ends of the plurality of electric wires 7 that exit from the soundproofing member 5.

[0017] As illustrated in Figures 1 to 3, the soundproofing element 5 comprises a base 11 and a cover 13.

[0018] The base 11 is made, for example, of urethane foam or the like, or a nonwoven fabric of polypropylene fibers, polyethylene terephthalate fibers, polyester-based fibers or the like and has soundproofing and heat-insulating properties. The base 11 is formed into a sheet shape with a predetermined size so that the base 11 is arranged within the overall size range of the target member and is assembled to the target member by a fastening means (not shown) such as a press fit. On one surface side of the base 11, the plurality (four in the present embodiment) of electric wires 7 of the wire harness 3 are arranged in a predetermined shape.The ends of the plurality of electric wires 7, each of the electric wires 7 being arranged on the base 11, are exposed from an outer edge of the base 11 with a predetermined length, and the connectors 9 are arranged outside the base 11.

[0019] The cover 13 is made, for example, from a film of vinyl chloride, polyethylene or the like or from a closed-cell foam or an open-cell foam of polyethylene, polypropylene, polystyrene, elastomer or the like and has soundproofing and heat-insulating properties. The cover 13 is formed into a sheet shape with a size determined to be equal to that of the base 11 so that the cover 13 is arranged within the overall size range of the target member and a thickness determined to be less than that of the base 11. An adhesive is applied to a surface of the cover 13 facing the base 11, and the cover 13 is fixed to one surface side of the base 11 so that the plurality of electric wires 7 are sandwiched between the cover 13 and the base 11. In a state in which the cover 13 is fixed, integrally, to the base 11, the plurality of electric wires 7 arranged in a predetermined shape, are held between the base 11 and the cover 13. Therefore, the soundproofing member 5 can protect the electric wire 7 of the wire harness 3, and maintain the arrangement shape of the electric wire 7.

[0020] The connector 9 exposed from the soundproofing member 5 is mounted on a coupling connector in a state in which the electrical harness assembly 1 is assembled to the target member. At this time, since the electrical wire 7 is exposed from the outer edge of the soundproofing member 5 with a predetermined length, the connector 9 can move freely, facilitating the mounting of the connector 9 on a coupling connector. By mounting / adjusting the connector 9 on / to the coupling connector, the electrical components are electrically connected to each other.

[0021] In the soundproofing member 5 of the wiring harness assembly 1, the cover 13 has a plurality of through holes 15. By providing the plurality of through holes 15 in the cover 13, sound can be absorbed over a wider frequency range compared to a cover 13 not having through holes 15, and the soundproofing properties can be improved. It is known that in a case in which the opening areas of the plurality of through holes 15 are small relative to the entire area on one surface side of the soundproofing member 5, the sound absorption properties in the low frequency range are improved, and in a case in which the opening areas of the plurality of through holes 15 are large relative to the entire area on one surface side of the soundproofing member 5, the sound absorption properties in the high frequency range are improved.Therefore, the desired soundproofing properties can be obtained by adjusting the opening areas of the plurality of through holes 15 according to the target frequency range.

[0022] Here, in a conventional wire harness assembly, a plurality of through holes of the same shape are provided on the entire surface of one side of the soundproofing member, and intervals between adjacent through holes are determined to be equal. Therefore, in the conventional wire harness assembly, the plurality of through holes form an opening region with a uniform opening ratio per unit area in any part of the soundproofing member. Here, the opening ratio per unit area is a ratio indicating the amount that the opening areas of the through holes occupy relative to a predetermined area. That is, the opening ratio per unit area can be obtained by dividing the sum of the opening areas of the through holes arranged in the predetermined range by the area of ​​the predetermined range. In such a conventional wire harness assembly, the frequency range in which sound can be absorbed is the same in any part of the soundproofing member, and there is a limit to the frequency range in which sound can be absorbed.

[0023] On the other hand, the wire harness assembly 1 according to the present embodiment comprises a plurality of opening regions 17 where the plurality of through holes 15 are different in terms of the opening ratio per unit area. In the following description, it is assumed that the plurality of through holes 15 are provided in the cover 13, but the plurality of through holes 15 may be provided in the base 11.

[0024] As illustrated in Figures 1 to 3, the plurality of through holes 15 are arranged in the plurality of opening regions 17 in a distributed manner over the entire surface of the cover 13, and the plurality of opening regions 17 are different from each other in terms of opening ratios per unit area of ​​the through holes 15 in the plurality of opening regions 17. In the present embodiment, the plurality of through holes 15 are arranged in a distributed manner, for example, in an opening region 17A, an opening region 17B, and an opening region 17C. In the opening region 17A, a plurality of circular through holes 15 having a larger diameter than the through holes 15 in the opening region 17B are provided, and an interval between adjacent through holes 15 is determined to be less than that between adjacent through holes 15 in the opening region 17B.In the opening region 17B, a plurality of circular through holes 15 having a smaller diameter than the through holes 15 in the opening region 17A are provided, and an interval between adjacent through holes 15 is determined to be greater than that between adjacent through holes 15 in the opening region 17A. In the opening region 17C, a through hole 15 having a rectangular shape is provided.

[0025] In the present embodiment, the opening region 17C has the highest aperture ratio per unit area. The opening region 17A has the second largest aperture ratio per unit area. The opening region 17B has the lowest aperture ratio per unit area. Therefore, in each opening region 17, a frequency range in which sound can be absorbed is different. In the soundproofing member 5 having the plurality of opening regions 17, sounds in different frequency ranges can be absorbed in parts where the plurality of opening regions 17 are positioned, and the frequency range in which sound can be absorbed is wide. Therefore, sound can be absorbed in a wide frequency range by the soundproofing member 5, and the soundproofing properties can be improved. Furthermore, since the shapes of the through holes 15 and the intervals between adjacent through holes 15 are different between the plurality of opening regions 17, the plurality of opening regions 17 can be different in terms of the aperture ratio per unit area with a simple structure.

[0026] The electric wire 7 of the electric harness 3 arranged inside the soundproofing member 5 can be arranged to avoid the plurality of through holes 15. By arranging the electric wire 7 to avoid the plurality of through holes 15, the electric wire 7 is not exposed from the soundproofing member 5 and the electric wire 7 can be stably protected by the soundproofing member 5.

[0027] The wiring harness assembly 1 according to the present embodiment comprises a wiring harness 3 including an electric wire 7 and a connector 9 electrically connected to one end of the electric wire 7. The wiring harness assembly 1 also comprises a soundproofing member 5 including a base 11 and a cover 13 integrally provided on one surface side of the base 11, with the wiring harness 3 being arranged between the base 11 and the cover 13. At least one of the base 11 or the cover 13 comprises a plurality of through holes 15. The plurality of through holes 15 are arranged in a distributed manner in a plurality of opening regions 17. The plurality of opening regions 17 are different from each other in terms of opening ratios per unit area of ​​the through holes 15 in the plurality of opening regions 17.

[0028] In the soundproofing member 5 having the plurality of through holes 15 in the plurality of opening regions 17, sounds in different frequency ranges can be absorbed in portions where the plurality of opening regions 17 are located, and the frequency range in which a sound can be absorbed is wide. Therefore, a sound can be absorbed in a wide frequency range by the soundproofing member 5 and the soundproofing properties can be improved.

[0029] Therefore, in the electrical harness assembly 1, the soundproofing properties can be improved.

[0030] The plurality of opening regions 17 are different from each other in at least one of the shapes of the through holes 15 or the intervals between adjacent ones of the through holes 15.

[0031] Therefore, the plurality of opening regions 17 may be different in terms of opening ratio per unit area with a simple structure.

[0032] In the embodiment described above, the through holes 15 have a perfect circular shape or a quadrangular shape, but the present invention is not limited thereto. For example, the through holes 15 may have any shape such as an elliptical shape or a polygonal shape such as a triangular shape. For example, in a case in which the through holes 15 have a quadrangular shape, the aperture ratio per unit area may be higher than in a case in which the through holes 15 have a perfect circular shape and intervals between adjacent through holes 15 are determined to be equal.

[0033] The plurality of opening regions 17 are provided at three locations in the soundproofing member 5, but the present invention is not limited thereto, and the plurality of opening regions 17 may be provided at two locations or at four or more locations in the soundproofing member 5.

[0034] The plurality of through holes 15 are provided in the cover 13, but the present invention is not limited thereto, and the plurality of through holes 15 may be provided in the base 11. In this case, it is not necessary to provide a plurality of through holes 15 in the cover 13, but the through holes 15 may be provided in the cover 13 in order to adjust a frequency range in which a sound can be absorbed. In addition, the thicknesses and the like of the cover 13 and the base 11 may be adjusted according to the frequency range in which a sound is absorbed.

[0035] Although the present invention has been described above with reference to the embodiment, the present invention is not limited thereto and the configuration of the parts may be replaced by any configuration having a similar function, as long as it is within the scope of the claims.

Claims

Claims

1. A wiring harness assembly (1) comprising: a wiring harness (3) comprising an electrical wire (7) and a connector (9) electrically connected to one end of the electrical wire (7); and a soundproofing member (5) comprising a base (11) and a cover (13) integrally provided on one surface side of the base (11) with the wire harness (3) being arranged between the base (11) and the cover (13), wherein: at least one of the base (11) or the cover (13) comprises through holes (15), the through holes (15) are arranged to be distributed over the opening regions (17A, 17B, 17C), and the opening regions (17A, 17B, 17C) are different from each other in terms of opening ratios per unit area of ​​the through holes (15) in the opening regions (17A, 17B, 17C).

2. The wire harness assembly (1) according to claim 1, wherein the opening regions (17A, 17B, 17C) are different from each other in at least one of the shapes of the through holes (15) or one of the intervals between the through holes (15) which are adjacent.

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