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JP2014109624A - Wiring harness having sound absorber, and connection structure of the same to supporting member - Google Patents

Wiring harness having sound absorber, and connection structure of the same to supporting member Download PDF

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JP2014109624A
JP2014109624A JP2012262836A JP2012262836A JP2014109624A JP 2014109624 A JP2014109624 A JP 2014109624A JP 2012262836 A JP2012262836 A JP 2012262836A JP 2012262836 A JP2012262836 A JP 2012262836A JP 2014109624 A JP2014109624 A JP 2014109624A
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sound
sound absorbing
wire harness
absorbing layer
layer
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JP6036231B2 (en
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Yutaka Takada
裕 高田
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a wiring harness having a sound absorber capable of decreasing or reducing a noise reduction member without reducing sound absorption performance even when the wiring harness is used under an environment in which a device for generating noise is installed.SOLUTION: The wiring harness 1 having a sound absorber includes: a sound absorber having a first sound absorption layer 11 and a second sound absorption layer 12 that have different bulk densities; and a wiring harness 13 whose at least a part is sandwiched between the first sound absorption layer 11 and the second sound absorption layer 12. The first sound absorption layer 11 is nonwoven fabric having a fabric weight of 20-400 g/mand a thickness of 0.1-4.0 mm. The second sound absorption layer 12 is nonwoven fabric having a fabric weight of 150-1000 g/mand a thickness of 1.0-50.0 mm.

Description

本発明は、ワイヤハーネスの周囲に配置された装置から発生する音（騒音）を吸収する吸音材が取り付けられたワイヤハーネス、およびこのようなワイヤハーネスを支持部材に接続する構造に関する。   The present invention relates to a wire harness to which a sound absorbing material that absorbs sound (noise) generated from an apparatus disposed around the wire harness is attached, and a structure for connecting such a wire harness to a support member.

下記特許文献１などに記載されるように、車両などには装置から発生する騒音を吸収する吸音材が設けられる。例えば、いわゆるダッシュボード内に吸音材を設けてエアコンのファンの音を吸収することにより、車両室内の静音性が高められる。この種の吸音材としては、下記特許文献２の従来技術として記載されているように、吸音層および表皮層を有する構成のものが一般的である。   As described in the following Patent Document 1, a vehicle or the like is provided with a sound absorbing material that absorbs noise generated from the apparatus. For example, by providing a sound absorbing material in a so-called dashboard to absorb the sound of a fan of an air conditioner, the quietness in the vehicle compartment can be improved. As this type of sound-absorbing material, a material having a sound-absorbing layer and a skin layer is generally used as described in the prior art of Patent Document 2 below.

特開２００３−２１６１５８号公報JP 2003-216158 A 特開２００８−１４６００１号公報JP 2008-146001 A

このように、騒音を発生する装置が搭載されている場合には、その近くに吸音材を配置する必要がある。また、この騒音を発生する装置や他の装置の電気的接続のために用いられるワイヤハーネス（複数の電線が束になったものだけでなく単一の電線を含む。以下同じ）が配置されるが、このワイヤーハーネスが振動などにより他の部材と接触し、それにより騒音が発生してしまうことがある。そのため、ワイヤーハーネスの外側には、他の部材との接触による騒音の発生およびワイヤハーネスの損傷を抑制するための緩衝材（消音材などとも称される）が設けられることがある。上記ダッシュボード内など、騒音を発生する装置が設けられるものでは、このような騒音やワイヤハーネスの損傷を低減するための部材（以下、騒音低減部材と称することもある）の削減によるコスト低減が求められる。   Thus, when a device that generates noise is mounted, it is necessary to dispose a sound absorbing material in the vicinity thereof. In addition, a wire harness (including not only a bundle of a plurality of electric wires but a single electric wire, the same applies hereinafter) used for electrical connection of the noise generating device and other devices is arranged. However, this wire harness may come into contact with other members due to vibration or the like, thereby generating noise. Therefore, a cushioning material (also referred to as a silencer or the like) for suppressing generation of noise due to contact with other members and damage to the wire harness may be provided outside the wire harness. In the case where a device for generating noise is provided, such as in the dashboard, the cost can be reduced by reducing the member for reducing such noise and damage to the wire harness (hereinafter also referred to as noise reducing member). Desired.

本発明は、騒音を発生する装置が設置される環境下において用いられることにより、吸音性能を低下させることなく騒音低減部材を削減または低減することができる吸音材付ワイヤハーネスを提供することにある。また、このようなワイヤハーネスを支持部材に接続する手法を提供することにある。   It is an object of the present invention to provide a wire harness with a sound absorbing material that can be used in an environment where a device that generates noise is installed, thereby reducing or reducing the number of noise reducing members without deteriorating the sound absorbing performance. . Moreover, it is providing the method of connecting such a wire harness to a supporting member.

本発明にかかる吸音材付ワイヤハーネスは、嵩密度の異なる第一吸音層および第二吸音層を有する吸音材と、少なくとも一部が前記第一吸音層と前記第二吸音層の間に挟まれたワイヤハーネスと、を備えることを特徴とする。   The wire harness with a sound absorbing material according to the present invention includes a sound absorbing material having a first sound absorbing layer and a second sound absorbing layer having different bulk densities, and at least a part thereof is sandwiched between the first sound absorbing layer and the second sound absorbing layer. And a wire harness.

前記第一吸音層は、目付２０〜４００ｇ／ｍ２、厚み０．１〜４．０ｍｍの不織布であり、前記第二吸音層は、目付１５０〜１０００ｇ／ｍ２、厚み１．０〜５０．０ｍｍの不織布であるとよい。 The first sound absorbing layer is a nonwoven fabric having a basis weight of 20 to 400 g / m 2 and a thickness of 0.1 to 4.0 mm, and the second sound absorbing layer is a basis weight of 150 to 1000 g / m 2 and a thickness of 1.0 to 50. It is good that it is a nonwoven fabric of 0 mm.

本発明にかかる吸音材付ワイヤハーネスは、前記第一吸音層および前記第二吸音層の少なくともいずれか一方を支持部材に固定することにより、前記ワイヤハーネスにおける前記第一吸音層および前記第二吸音層に挟まれた部分を当該支持部材に接続することができる。   The wire harness with a sound absorbing material according to the present invention has the first sound absorbing layer and the second sound absorbing layer in the wire harness by fixing at least one of the first sound absorbing layer and the second sound absorbing layer to a support member. A portion sandwiched between the layers can be connected to the support member.

ワイヤハーネスにおける第一吸音層と第二吸音層との間に挟まれた部分が騒音を発生する装置の近くに位置するように本発明にかかる吸音材付ワイヤハーネスを配策することにより、吸音性能を低下させることなく、従来ワイヤハーネスとは別に設けられていた吸音材を削減またはワイヤハーネスとは別に設けられる吸音材の量を低減することができる。   By arranging the wire harness with the sound absorbing material according to the present invention so that the portion sandwiched between the first sound absorbing layer and the second sound absorbing layer in the wire harness is located near the device that generates noise, Without reducing the performance, it is possible to reduce the amount of the sound absorbing material provided separately from the conventional wire harness or to reduce the amount of the sound absorbing material provided separately from the wire harness.

支持部材に対してワイヤハーネスを所定の経路で配策するにあたり、ワイヤハーネスの少なくとも一部が第一吸音層と第二吸音層の間に挟まれていることを利用できる。つまり、第一吸音層および第二吸音層の少なくともいずれか一方を支持部材に接続することにより、ワイヤハーネスにおける第一吸音層と第二吸音層との間に挟まれた部分を所定の位置に固定することができる。つまり、上記発明は吸音材をワイヤハーネスの取付部材としても利用したものである。このようにすれば、当該挟まれた部分が振動などにより他の部材と接触することもなくなるため、他の部材との接触による騒音の発生を防止する上述した緩衝材を削減することもできる。   In arranging the wire harness with respect to the support member along a predetermined path, it can be utilized that at least a part of the wire harness is sandwiched between the first sound absorbing layer and the second sound absorbing layer. In other words, by connecting at least one of the first sound absorbing layer and the second sound absorbing layer to the support member, the portion sandwiched between the first sound absorbing layer and the second sound absorbing layer in the wire harness is placed in a predetermined position. Can be fixed. That is, the said invention utilizes a sound-absorbing material also as an attachment member of a wire harness. In this way, the sandwiched portion does not come into contact with other members due to vibration or the like, and thus the above-described cushioning material that prevents the generation of noise due to contact with other members can be reduced.

本発明の一実施形態にかかる吸音材付ワイヤハーネスの断面を模式的に示した図であり、ワイヤハーネスにおける第一吸音層と第二吸音層の間に挟まれた部分が支持部材に接続された状態、および騒音を発生する装置との位置関係を示したものである。It is the figure which showed typically the cross section of the wire harness with a sound-absorbing material concerning one Embodiment of this invention, and the part pinched | interposed between the 1st sound absorption layer and the 2nd sound absorption layer in a wire harness is connected to the support member. And the positional relationship with a device that generates noise. 垂直入射法による吸音率の測定方法を説明するための図である。It is a figure for demonstrating the measuring method of the sound absorption rate by a normal incidence method.

以下、本発明の実施形態について説明する。本実施形態にかかる吸音材付ワイヤハーネス１は、第一吸音層１１および第二吸音層１２を有する吸音材と、少なくとも一部が第一吸音層１１と第二吸音層１２の間に挟まれたワイヤハーネス１３を備える。   Hereinafter, embodiments of the present invention will be described. The wire harness with a sound absorbing material 1 according to the present embodiment is sandwiched between a sound absorbing material having a first sound absorbing layer 11 and a second sound absorbing layer 12, and at least a part between the first sound absorbing layer 11 and the second sound absorbing layer 12. A wire harness 13 is provided.

本実施形態では、吸音材が有する第一吸音層１１と第二吸音層１２はともに不織布である。この第一吸音層１１と第二吸音層１２の嵩密度は異なる。以下、嵩密度が大きい方を第一吸音層１１とし、嵩密度が小さい方を第二吸音層１２とする。第一吸音層１１は、目付２０ｇ／ｍ２〜４００ｇ／ｍ２、厚み０．１ｍｍ〜４．０ｍｍの範囲にあることが好ましい。第二吸音層１２は、目付１５０ｇ／ｍ２〜１０００ｇ／ｍ２、厚み１．０ｍｍ〜５０．０ｍｍの範囲にあることが好ましい。 In the present embodiment, the first sound absorbing layer 11 and the second sound absorbing layer 12 of the sound absorbing material are both non-woven fabrics. The bulk density of the first sound absorbing layer 11 and the second sound absorbing layer 12 is different. Hereinafter, the one having a higher bulk density is referred to as a first sound absorbing layer 11, and the one having a lower bulk density is referred to as a second sound absorbing layer 12. The first sound absorbing layer 11 preferably has a basis weight of 20 g / m 2 to 400 g / m 2 and a thickness of 0.1 mm to 4.0 mm. The second sound absorbing layer 12 preferably has a basis weight of 150 g / m 2 to 1000 g / m 2 and a thickness of 1.0 mm to 50.0 mm.

第一吸音層１１を構成する繊維は、繊維径４〜５０μｍの範囲にあることが好ましい。第二吸音層１２を構成する繊維は、繊維径９〜１００μｍの範囲にあることが好ましい。繊維の形状は特に限定されず、芯鞘型、円筒型、中空型、サイドバイサイド型や、通常の繊維と形状の異なる異型断面繊維のいずれであってもよい。各層を構成する主成分となる主体繊維の種類としては、ポリエステル繊維、ポリオレフィン繊維、ナイロン繊維、ポリアミド繊維、ポリ塩化ビニル繊維、レーヨン繊維、アクリロニトリル繊維、セルロース繊維、ケナフ繊維、ガラス繊維等が挙げられる。これらは、一種単独で使用してもよいし、複数種類を混合してもよい。また、主体繊維以外に熱接着性を有するバインダ繊維を含んでいてもよい。各層を構成する不織布の製造方法は特定の方法に限定されない。ニードルパンチ法や、スパンレース法などが例示できる。   It is preferable that the fiber which comprises the 1st sound absorption layer 11 exists in the range of fiber diameters 4-50 micrometers. It is preferable that the fiber which comprises the 2nd sound absorption layer 12 exists in the range of fiber diameters 9-100 micrometers. The shape of the fiber is not particularly limited, and may be any of a core-sheath type, a cylindrical type, a hollow type, a side-by-side type, and a modified cross-section fiber having a shape different from that of a normal fiber. Examples of the main fibers constituting each layer include polyester fibers, polyolefin fibers, nylon fibers, polyamide fibers, polyvinyl chloride fibers, rayon fibers, acrylonitrile fibers, cellulose fibers, kenaf fibers, and glass fibers. . These may be used individually by 1 type, and may mix multiple types. Further, in addition to the main fiber, a binder fiber having thermal adhesiveness may be included. The manufacturing method of the nonwoven fabric which comprises each layer is not limited to a specific method. Examples include the needle punch method and the spun lace method.

相対的に高密度である第一吸音層１１は、表皮層（部）などと称される部分である。相対的に低密度である第二吸音層１２は、吸音（基材）層（部）などとも称される部分である。吸音効果を高めるためには、騒音を発生する装置Ｍの側に高密度の第一吸音層１１を位置させることが好ましい。   The first sound-absorbing layer 11 having a relatively high density is a part called a skin layer (part). The relatively low-density second sound absorbing layer 12 is a portion also referred to as a sound absorbing (base material) layer (part). In order to enhance the sound absorption effect, it is preferable to place the high-density first sound absorption layer 11 on the side of the device M that generates noise.

ワイヤハーネス１３は、単数または複数の電線が一纏めにされたものである。本実施形態にかかる吸音材付ワイヤハーネス１は、ワイヤハーネス１３の少なくとも一部が、上記第一吸音層１１と第二吸音層１２との間に挟まれた状態にある。第一吸音層１１と第二吸音層１２におけるワイヤハーネス１３を挟む部分以外の部分の少なくとも一部は接続されている。ワイヤハーネス１３を挟む第一吸音層１１と第二吸音層１２の接続（積層）方法は特定の方法に限定されない。両吸音層の対向する面に接着剤を塗布する手法、超音波溶着などが例示できる。また後述するように、ワイヤハーネス１３を吸音材を介して支持部材Ｂに接続する際に、両吸音層を支持部材Ｂに接続することにより、両吸音層の積層を実現することもできる。   The wire harness 13 is one in which one or a plurality of electric wires are grouped. The wire harness 1 with a sound absorbing material according to the present embodiment is in a state where at least a part of the wire harness 13 is sandwiched between the first sound absorbing layer 11 and the second sound absorbing layer 12. At least a portion of the first sound absorbing layer 11 and the second sound absorbing layer 12 other than the portion sandwiching the wire harness 13 is connected. The connection (lamination) method of the first sound absorbing layer 11 and the second sound absorbing layer 12 sandwiching the wire harness 13 is not limited to a specific method. Examples thereof include a technique of applying an adhesive to the opposing surfaces of both sound absorbing layers, ultrasonic welding, and the like. As will be described later, when the wire harness 13 is connected to the support member B via the sound absorbing material, the sound absorbing layers can be stacked by connecting the sound absorbing layers to the support member B.

本実施形態にかかる吸音材付ワイヤハーネス１は、図１に示すように取り付けるとよい。騒音を発生する装置Ｍの周囲にワイヤハーネス１３が配策される場合、ワイヤハーネス１３における当該装置Ｍの近くを通る部分が第一吸音層１１と第二吸音層１２との間に挟まれるようにする。そして、第一吸音層１１および第二吸音層１２の少なくともいずれか一方を支持部材Ｂ（振動等によってワイヤハーネス１３が動かないようにするための土台）に固定する。これにより、ワイヤハーネス１３における第一吸音層１１と第二吸音層１２との間に挟まれた部分が支持部材Ｂに接続された状態となる。第一吸音層１１および第二吸音層１２の少なくともいずれか一方と支持部材Ｂの固定は、特定の方法に限定されない。接着剤などによって吸音層を貼り付けてもよいし、吸音層と支持部材Ｂを繋ぐ固定部材を用いてもよい。また、ワイヤハーネス１３を第一吸音層１１と第二吸音層１２に挟んだ状態で、第一吸音層１１と第二吸音層１２の両方を固定部材によって支持部材Ｂに固定してもよい。そうすると、第一吸音層１１と第二吸音層１２を接続（積層）する工程を省略することができる。   The wire harness with sound-absorbing material 1 according to this embodiment may be attached as shown in FIG. When the wire harness 13 is routed around the device M that generates noise, a portion of the wire harness 13 that passes near the device M is sandwiched between the first sound absorbing layer 11 and the second sound absorbing layer 12. To. Then, at least one of the first sound absorption layer 11 and the second sound absorption layer 12 is fixed to the support member B (a base for preventing the wire harness 13 from moving due to vibration or the like). Thereby, the portion sandwiched between the first sound absorbing layer 11 and the second sound absorbing layer 12 in the wire harness 13 is connected to the support member B. The fixing of at least one of the first sound absorbing layer 11 and the second sound absorbing layer 12 and the support member B is not limited to a specific method. The sound absorbing layer may be attached by an adhesive or the like, or a fixing member that connects the sound absorbing layer and the support member B may be used. Further, both the first sound absorbing layer 11 and the second sound absorbing layer 12 may be fixed to the support member B by a fixing member in a state where the wire harness 13 is sandwiched between the first sound absorbing layer 11 and the second sound absorbing layer 12. Then, the process of connecting (lamination) the first sound absorbing layer 11 and the second sound absorbing layer 12 can be omitted.

吸音材による吸音性能を高めるためには、高密度の第一吸音層１１（いわゆる表皮層）が支持部材Ｂの反対側に位置し、騒音を発生する装置Ｍに近い側に位置するようにするとよい。   In order to enhance the sound absorption performance of the sound absorbing material, the high-density first sound absorbing layer 11 (so-called skin layer) is located on the opposite side of the support member B and is located on the side closer to the device M that generates noise. Good.

このように本実施形態にかかる吸音材付ワイヤハーネス１を、騒音が発生する装置Ｍの近くに吸音材が位置するように配置することにより、従来のようにワイヤハーネス１３とは別に吸音材を配置する必要がなくなる、または、従来よりもワイヤハーネス１３とは別に配置する吸音材の量を低減することができる。   In this way, by arranging the sound absorbing material-equipped wire harness 1 according to the present embodiment so that the sound absorbing material is positioned near the device M that generates noise, the sound absorbing material is separated from the wire harness 13 as in the related art. It becomes unnecessary to arrange, or the amount of the sound absorbing material arranged separately from the wire harness 13 can be reduced as compared with the conventional case.

また、第一吸音層１１と第二吸音層１２に挟まれるワイヤハーネス１３の所定部位は、吸音材を介して支持部材Ｂに接続されるため、当該部位が振動などによって動いてしまい、他の部材と接触してしまうことはない。そのため、従来のようにワイヤハーネス１３が他の部材と接触することによる騒音の発生およびワイヤハーネス１３の損傷を抑制するための緩衝材を設ける必要がない。   Moreover, since the predetermined site | part of the wire harness 13 pinched | interposed into the 1st sound absorption layer 11 and the 2nd sound absorption layer 12 is connected to the supporting member B via a sound absorption material, the said site | part will move by vibration etc., and other There is no contact with the member. Therefore, it is not necessary to provide a shock-absorbing material for suppressing generation of noise due to contact of the wire harness 13 with another member and damage to the wire harness 13 as in the conventional art.

このように、本実施形態にかかる吸音材付ワイヤハーネス１を用いれば、吸音性能を低下させることなく、ワイヤハーネス１３とは別に設けられる吸音材や、ワイヤハーネス１３と他の部材の接触による騒音の発生などを抑制するための緩衝材を削減することができる。   Thus, if the wire harness 1 with a sound-absorbing material according to the present embodiment is used, the sound-absorbing material provided separately from the wire harness 13 and the noise caused by the contact between the wire harness 13 and other members without reducing the sound-absorbing performance. Can be reduced.

以上説明した本発明は、車両におけるダッシュボードの内側など、騒音を発生する装置Ｍ（ダッシュボードの内側であれば、エアコンのファンなど）が設置される環境下にワイヤハーネス１３が配策される場合に特に有効である。   In the present invention described above, the wire harness 13 is arranged in an environment in which a device M that generates noise (such as an air conditioner fan inside the dashboard) is installed, such as the inside of a dashboard in a vehicle. It is especially effective in cases.

以下、実施例を用いて本発明を説明する。第一吸音層１１（表皮層）および第二吸音層１２（基材層）の嵩密度（目付および厚み）の変化に伴う吸音性能の変化を測定した。第一吸音層１１および第二吸音層１２を構成する不織布はポリエステル製である。吸音率α（α＝（ｌｉ−ｌｒ）／ｌｉ）はＪＩＳＡ１４０５−２に準拠し、垂直入射法にて測定した（図２参照）。１０００Ｈｚ帯の吸音率が０．２５以下、２０００Ｈｚ帯の吸音率が０．４以下、３０００Ｈｚ帯の吸音率が０．６０以下、４０００Ｈｚ帯の吸音率が０．８０以下の場合を「×」とし、それ以上吸音率を有する場合を「○」と判定した。第一吸音層１１の嵩密度（目付および厚み）を変化させた場合の結果を表１に、第二吸音層１２の嵩密度（目付および厚み）を変化させたときの結果を表２に示す。   Hereinafter, the present invention will be described using examples. The change in the sound absorption performance accompanying the change in the bulk density (weight and thickness) of the first sound absorbing layer 11 (skin layer) and the second sound absorbing layer 12 (base material layer) was measured. The nonwoven fabric which comprises the 1st sound absorption layer 11 and the 2nd sound absorption layer 12 is a product made from polyester. The sound absorption coefficient α (α = (li−lr) / li) was measured by a normal incidence method according to JIS A1405-2 (see FIG. 2). When the sound absorption coefficient in the 1000 Hz band is 0.25 or less, the sound absorption coefficient in the 2000 Hz band is 0.4 or less, the sound absorption coefficient in the 3000 Hz band is 0.60 or less, and the sound absorption coefficient in the 4000 Hz band is 0.80 or less. A case where the sound absorption coefficient was higher than that was determined as “◯”. Table 1 shows the results when the bulk density (weight and thickness) of the first sound absorbing layer 11 is changed, and Table 2 shows the results when the bulk density (weight and thickness) of the second sound absorbing layer 12 is changed. .

Figure 2014109624
Figure 2014109624
Figure 2014109624
Figure 2014109624

表１および表２より、第一吸音層１１を、目付２０〜４００ｇ／ｍ２、厚み０．１〜４．０ｍｍの不織布で構成し、第二吸音層１２を、目付１５０〜１０００ｇ／ｍ２、厚み１．０〜５０．０ｍｍの不織布で構成することにより、優れた吸音特性を発揮する吸音材となることがわかる。このような第一吸音層１１と第二吸音層１２の間にワイヤハーネス１３を挟み込むことにより、吸音材とワイヤハーネス１３の一体化を実現することが可能である。 From Table 1 and Table 2, the 1st sound absorption layer 11 is comprised with 20-400 g / m < 2 > of fabric weights, and the thickness of 0.1-4.0 mm, and the 2nd sound absorption layer 12 is 150-1000 g / m < 2 > of fabric weights. It turns out that it becomes a sound-absorbing material which exhibits the outstanding sound-absorbing characteristic by comprising with the nonwoven fabric of thickness 1.0-50.0mm. By sandwiching the wire harness 13 between the first sound absorbing layer 11 and the second sound absorbing layer 12, the sound absorbing material and the wire harness 13 can be integrated.

以上、本発明の実施の形態について詳細に説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の改変が可能である。   Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

上記実施形態では、第一吸音層１１および第二吸音層１２は不織布であることを説明したが、第一吸音層１１の方が第二吸音層１２よりも嵩密度が大きい構成であれば、その他の種類（例えば発泡材からなる吸音層）のものも適用可能である。   In the said embodiment, although the 1st sound absorption layer 11 and the 2nd sound absorption layer 12 demonstrated that it was a nonwoven fabric, if the direction of the 1st sound absorption layer 11 has a larger bulk density than the 2nd sound absorption layer 12, Other types (for example, a sound absorbing layer made of a foam material) are also applicable.

１ 吸音材付ワイヤハーネス
１１ 第一吸音層
１２ 第二吸音層
１３ ワイヤハーネス
Ｂ 支持部材 DESCRIPTION OF SYMBOLS 1 Wire harness 11 with a sound absorption material 1st sound absorption layer 12 2nd sound absorption layer 13 Wire harness B Support member

Claims (3)

嵩密度の異なる第一吸音層および第二吸音層を有する吸音材と、
少なくとも一部が前記第一吸音層と前記第二吸音層の間に挟まれたワイヤハーネスと、
を備えることを特徴とする吸音材付ワイヤハーネス。 A sound-absorbing material having a first sound-absorbing layer and a second sound-absorbing layer having different bulk densities;
A wire harness at least partially sandwiched between the first sound absorbing layer and the second sound absorbing layer;
A wire harness with a sound-absorbing material, comprising: 前記第一吸音層は、目付２０〜４００ｇ／ｍ２、厚み０．１〜４．０ｍｍの不織布であり、
前記第二吸音層は、目付１５０〜１０００ｇ／ｍ２、厚み１．０〜５０．０ｍｍの不織布であることを特徴とする吸音材付ワイヤハーネス。 The first sound absorbing layer is a nonwoven fabric having a basis weight of 20 to 400 g / m 2 and a thickness of 0.1 to 4.0 mm.
The second sound absorbing layer is a non-woven fabric having a basis weight of 150 to 1000 g / m 2 and a thickness of 1.0 to 50.0 mm. 支持部材に対する請求項１または請求項２に記載の吸音材付ワイヤハーネスの接続構造であって、
前記第一吸音層および前記第二吸音層の少なくともいずれか一方が前記支持部材に固定されることにより、前記ワイヤハーネスにおける前記第一吸音層および前記第二吸音層に挟まれた部分が当該支持部材に接続されることを特徴とするワイヤハーネスの接続構造。 The connection structure of the wire harness with a sound absorbing material according to claim 1 or claim 2 for the support member,
When at least one of the first sound absorption layer and the second sound absorption layer is fixed to the support member, a portion of the wire harness sandwiched between the first sound absorption layer and the second sound absorption layer is supported. A connection structure for a wire harness, wherein the connection structure is connected to a member.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109493842A (en) * 2018-12-12 2019-03-19 东华大学 The sound insulation sound-absorbing cover and method and purposes that sound emission measures are broken for fibre bundle
US11959416B1 (en) 2022-10-28 2024-04-16 Toyota Jidosha Kabushiki Kaisha Engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1069820A (en) * 1996-08-28 1998-03-10 Yazaki Corp Wiring cable for vehicle and its manufacture
JP2012155990A (en) * 2011-01-26 2012-08-16 Auto Network Gijutsu Kenkyusho:Kk Wire harness
JP2014068521A (en) * 2012-09-10 2014-04-17 Sumitomo Wiring Syst Ltd Wire harness

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1069820A (en) * 1996-08-28 1998-03-10 Yazaki Corp Wiring cable for vehicle and its manufacture
JP2012155990A (en) * 2011-01-26 2012-08-16 Auto Network Gijutsu Kenkyusho:Kk Wire harness
JP2014068521A (en) * 2012-09-10 2014-04-17 Sumitomo Wiring Syst Ltd Wire harness

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109493842A (en) * 2018-12-12 2019-03-19 东华大学 The sound insulation sound-absorbing cover and method and purposes that sound emission measures are broken for fibre bundle
CN109493842B (en) * 2018-12-12 2023-12-29 东华大学 Sound insulation and absorption cover for measuring fiber bundle stretch breaking acoustic emission, method and application
US11959416B1 (en) 2022-10-28 2024-04-16 Toyota Jidosha Kabushiki Kaisha Engine

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