JP2007160949A - Resin made automobile interior trim member - Google Patents

Resin made automobile interior trim member Download PDF

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JP2007160949A
JP2007160949A JP2005355663A JP2005355663A JP2007160949A JP 2007160949 A JP2007160949 A JP 2007160949A JP 2005355663 A JP2005355663 A JP 2005355663A JP 2005355663 A JP2005355663 A JP 2005355663A JP 2007160949 A JP2007160949 A JP 2007160949A
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automobile interior
resin
skin
interior member
rib
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JP4721890B2 (en
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Tomohiro Mochizuki
知洋 望月
Shusuke Fujii
秀典 藤井
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Nihon Plast Co Ltd
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Nihon Plast Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure to prevent abnormal sound without especially requiring an excessive process to prevent generation of the abnormal sound caused by vibration of a resin made automobile interior trim part. <P>SOLUTION: This resin made automobile interior trim member has a surface skin made of polyurethane resin furnished with a core material and a plaster rib integrally provided on it, and the plaster rib is positioned in a mounting corresponding portion to an objective member and is made to contact with the objective member so as to prevent generation of the abnormal sound due to vibration through the plaster rib. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、インストルメントパネルなど樹脂製自動車内装部材に関する。   The present invention relates to a resin automobile interior member such as an instrument panel.

インストルメントパネル等の樹脂製自動車部材を相手部材に取付けた構造においては、各部品の製作時の寸法公差を考慮して、両部材間に若干の隙間を設けている。そのために自動車走行時の振動等により部材が振動し、部材同士の摩擦音や部材の振動音が発生することがある。このため、部材の合わせ部位において不織布を貼着して、部材同士が直接接触しないようにすることにより異音の発生を防止していた。しかし、不織布を適用する作業は煩雑であり、コストの増加を招くことになる。こうした問題を解決する提案として特許文献１には、車両部品とその取付け部の接触部分に気泡を含むホットメルト接着剤よりなる発泡体を介在させるという提案がある。
特開平３−２１１０３８号公報 In a structure in which a resin automobile member such as an instrument panel is attached to a mating member, a slight gap is provided between both members in consideration of dimensional tolerance when each part is manufactured. For this reason, the members may vibrate due to vibration or the like when the vehicle is running, and frictional noise between the members or vibration noise of the members may be generated. For this reason, the nonwoven fabric was stuck in the joining part of a member, and generation | occurrence | production of abnormal noise was prevented by preventing members from contacting directly. However, the work of applying the nonwoven fabric is complicated and causes an increase in cost. As a proposal for solving such a problem, Patent Document 1 has a proposal that a foam made of a hot-melt adhesive containing bubbles is interposed in a contact portion between a vehicle component and its mounting portion.
JP-A-3-211038

しかしながら、この方法においても接着剤を発泡させたり、また発泡させた接着剤を所定の部位に塗布する工程を必要とする。
本発明は、特に余分な工程を要することなく、前記の樹脂製自動車内装部品の振動に起因する異音の発生を防止する構造あるいは該構造を有する樹脂製自動車内装部品を提供することを目的とするものである。 However, this method also requires a step of foaming the adhesive or applying the foamed adhesive to a predetermined site.
An object of the present invention is to provide a structure for preventing the generation of abnormal noise caused by vibration of the resin automobile interior part without requiring an extra step or a resin automobile interior part having the structure. To do.

本発明者らは、鋭意検討した結果、樹脂製自動車内装部品の構造を工夫して、その表皮部に相手部材と接触する当てリブを一体的に成形することで解決できることを知見し、本発明に至った。
すなわち、本発明は、
［１］ 芯材とその上に一体に設けた当てリブを備えたポリウレタン樹脂からなる表皮を有する樹脂製自動車内装部材であって、前記当てリブは相手部材への取付け対応部位に位置し、該当てリブを介して振動による異音の発生を防止するように相手部材に当接固定を可能とした樹脂製自動車内装部材、
［２］ 該当てリブを取付け部位に間隔をあけて複数設けた［１］記載の樹脂製自動車内装部材、
［３］ 樹脂製自動車内装部材あるいは相手部材がインストルメントパネルである［１］または［２］記載の樹脂製自動車内装部材、
［４］ 芯材をコア型に固定し、表皮形成分の隙間を介してキャビ型を配置し、その隙間にポリウレタン樹脂材料を注入して表皮を一体に形成する樹脂製自動車内装部材の製造方法であって、相手部材の組付け対応部となる表皮部位に当てリブを形成することを特徴とする［１］〜［３］記載の樹脂製自動車内装部材の製造方法、
［５］ 前記コア型がその表皮端縁部対応部位の外側にガス抜き用溝を有することを特徴とする［４］記載の樹脂製自動車内装部材の製造方法、
に関する。 As a result of intensive studies, the present inventors have devised the structure of a resin automobile interior part, and found that it can be solved by integrally forming a contact rib in contact with a mating member on the skin portion of the present invention. It came to.
That is, the present invention
[1] A resin automobile interior member having an outer skin made of polyurethane resin provided with a core material and a contact rib integrally provided thereon, wherein the contact rib is located at a position corresponding to attachment to a mating member, and A plastic automobile interior member capable of abutting and fixing to the mating member so as to prevent the generation of noise due to vibration through the ribs,
[2] A resin automobile interior member according to [1], in which a plurality of ribs are provided at intervals in the attachment site.
[3] The resin automobile interior member according to [1] or [2], wherein the resin automobile interior member or the counterpart member is an instrument panel,
[4] A method for manufacturing a resinous automobile interior member in which a core material is fixed to a core mold, a mold mold is disposed through a gap for forming a skin, and a polyurethane resin material is injected into the gap to integrally form a skin. A method for manufacturing a resinous automobile interior member according to [1] to [3], wherein a rib is formed on a skin portion that is an assembly-corresponding portion of the counterpart member.
[5] The method for producing a resinous automobile interior member according to [4], wherein the core mold has a gas venting groove on the outer side of the skin edge corresponding portion.
About.

本発明によれば、樹脂製自動車内装部品の成形時に成形したポリウレタン樹脂からなる表皮に一体的に形成した当てリブにより、その弾性を利用して該内装部品を相手部材に対してがたつきなく、固定化することができるので、不織布、シール材の利用などによることなく、したがって特に余分な工程を必要とせず、低コストで異音の発生を防止することができる。   According to the present invention, the inner rib is made not to rattle against the mating member by utilizing the elasticity of the abutment rib formed integrally with the skin made of polyurethane resin molded at the time of molding the resin automobile interior component. Since it can be fixed, it does not depend on the use of a non-woven fabric, a sealing material, etc., and therefore no extra steps are required, and generation of abnormal noise can be prevented at low cost.

本発明は、樹脂製自動車内装部材であって、これを芯材上にポリウレタン樹脂からなる表皮を一体に成形し、かつその表皮の相手部材との取付け対応部位に当てリブを一体に形成することにより構成し、該当てリブを介して振動による異音の発生を防止するように相手部材に当接固定を可能としたことが重要である。
芯材としては、自動車用内装部材の成形に供されている各種の熱可塑性樹脂、熱硬化性樹脂を使用することができる。また、その表面上に一体に形成される表皮の材質についても軟質材料であればよく、特に制限はないが、好ましくは軟質のポリウレタン樹脂である。常法によりポリウレタン樹脂を芯材をセットした金型内に反応射出成形により注入して容易に製造が可能である。そして、表皮に一体的に形成したリブの弾性を利用して、相手部材に対してがたつきなく確実に安定して固定することが可能となる。したがって、自動車の走行に伴う振動にも影響されずに、異音を発生することを防止できる。 The present invention is a resin-made automobile interior member, which is formed by integrally forming an outer skin made of polyurethane resin on a core material, and integrally forming a rib on an attachment-corresponding portion of the outer skin with a mating member. It is important to be able to contact and fix to the mating member so as to prevent the generation of abnormal noise due to vibration via the rib.
As the core material, it is possible to use various thermoplastic resins and thermosetting resins that are used for molding automobile interior members. Also, the material of the skin formed integrally on the surface is not particularly limited as long as it is a soft material and is preferably a soft polyurethane resin. It can be easily manufactured by injecting polyurethane resin into a mold set with a core material by reaction injection molding in a conventional manner. Then, by using the elasticity of the ribs integrally formed on the skin, it is possible to reliably and stably fix the mating member without rattling. Therefore, it is possible to prevent the generation of abnormal noise without being affected by the vibration associated with the traveling of the automobile.

次に本発明の実施例を図面に基づいて説明する。
図７は、樹脂製自動車内装部材であるインストルメントパネルの説明図である。図１、３、５は、図７中に示した箇所の断面説明図であり、図１、３は本発明の実施例を示し、図５は従来例を示すものである。また、図２は図１のＡ−Ａ線断面説明図であり、図４は図３のＢ―Ｂ線断面説明図であり、図６は図５のＣ−Ｃ線断面説明図である。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 7 is an explanatory view of an instrument panel which is a resin automobile interior member. 1, 3, and 5 are cross-sectional explanatory views of the portion shown in FIG. 7, FIGS. 1 and 3 show an embodiment of the present invention, and FIG. 5 shows a conventional example. 2 is a sectional view taken along line AA in FIG. 1, FIG. 4 is a sectional view taken along line BB in FIG. 3, and FIG. 6 is a sectional view taken along line CC in FIG.

本発明の樹脂製自動車内装部材は、すでに述べているように、金型内にセットした芯材上にポリウレタン樹脂を反応射出成形により表皮として一体に形成して容易に製造することができる。
この成形方法を図面により説明すると、一般的には図９に示すように、芯材（Ｃ）をコア型（Ｂ）にセットし、キャビ型（Ａ）との間にポリウレタン樹脂材料を注入し表皮（Ｄ）を一体に成形するとともに端末の製品面（押し切り面Ｅ）においてキャビ型（Ａ）を当接させてポリウレタン樹脂材料の流動を止めて成形されている。
しかし、キャビティ内に注入されるポリウレタン樹脂材料は一般に低粘性の液体であり、実際の成形時においては、金型の分割面から、あるいは前記のＥ部からガス（空気）とともに漏れだし、製品にバリを形成する。このバリは通常外観を損なうので、これを除去し、仕上げる工程を要することとなる。このバリの発生を防止するために、図８に示すように、意図的に前記キャビ型当接面にガス抜き用に通路Ｆを設けてこの部分にガスを逃すことも知られているが、この部分の表皮は結局バリとなるから、やはり仕上げる工程が必要となる。 As already described, the resin automobile interior member of the present invention can be easily manufactured by integrally forming a polyurethane resin as a skin by reaction injection molding on a core material set in a mold.
The molding method will be described with reference to the drawings. Generally, as shown in FIG. 9, the core material (C) is set in the core mold (B), and the polyurethane resin material is injected between the mold mold (A). The skin (D) is molded integrally, and the mold (A) is brought into contact with the product surface (push cut surface E) of the terminal to stop the flow of the polyurethane resin material.
However, the polyurethane resin material injected into the cavity is generally a low-viscosity liquid. In actual molding, the polyurethane resin material leaks from the dividing surface of the mold or from the E part together with gas (air) to the product. Form burrs. Since this burr usually impairs the appearance, it requires a step of removing and finishing it. In order to prevent the occurrence of this burr, as shown in FIG. 8, it is also known that a passage F is intentionally provided in the mold-type contact surface for venting gas to escape gas to this portion. Since the skin of this part will eventually become burrs, a finishing process is still necessary.

そこで、本発明の好ましい態様においては、ガス抜き用の溝とこれに連通する樹脂漏れ防止溝を製品の端部の非意匠部、すなわち相手部材との組付けた結果、乗員の視野に入らない部分に対応する芯材の部位に適宜数設けることにより、これらの溝にガスと樹脂材料を逃して、金型の分割面など成形品の製造後に仕上げ工程を必要とする箇所でのバリの発生を防止することができる。
以下に、こうした態様について図面に基いて説明する。
図１０に示すように、芯材（３）をコア型（２）にセットし、キャビ型は表皮（４）分の隙間を介して配置し、この隙間にポリウレタン樹脂材料を注入する。このとき製品の端部の表皮形成部の外側に対応する芯材の部位５に溝６を設けることにより、表皮形成部の縁部から漏れ出たポリウレタン樹脂材料をこの溝で止めることができる。また、図１１に示すように、製品の表皮形成部の縁部に続き、非意匠部となる部分に対応する芯材の部位にガス抜き部７を設けることにより、ガスがキャビティ内に止まることによる表皮部のボイドの発生を防止することができる。図１２に示すようにこれを前記溝６と連通させる。なお、前記図９、１０、１１は、図７のＡ−Ａ線断面説明図（図１、３、５とは端部の構造が異なる）である。図１１は、インストルメントパネルの斜視図であり、ガス抜き用溝などの形成部位は相手部材との組みつけにより乗員の視野には入らない部分である。図１３は、芯材に設けたガス抜き用溝の斜視図である。
このような芯材に設けたガス抜き用溝などは、前記本発明の当てリブを設けた部材のみならず一般的に芯材とその上の表皮からなる樹脂製自動車内装部材にも適用することが可能である。そのため図９〜１２には、前記の当てリブは特に図示していない。
こうした成形方法によれば、成形製品は成形後にバリ取りやその仕上げ工程が不要となり、コストの低減に寄与することができる。 Therefore, in a preferred aspect of the present invention, as a result of assembling the gas vent groove and the resin leakage prevention groove communicating therewith with the non-design part at the end of the product, that is, the mating member, it does not enter the occupant's field of view. By providing an appropriate number at the core part corresponding to the part, gas and resin material are escaped to these grooves, and burrs are generated at places where a finishing process is required after manufacturing a molded part such as a mold split surface. Can be prevented.
Below, such an aspect is demonstrated based on drawing.
As shown in FIG. 10, the core material (3) is set in the core mold (2), the cavity mold is arranged through the gap for the skin (4), and the polyurethane resin material is injected into this gap. At this time, by providing the groove 6 in the core portion 5 corresponding to the outside of the skin forming portion at the end of the product, the polyurethane resin material leaking from the edge of the skin forming portion can be stopped by this groove. In addition, as shown in FIG. 11, the gas stops in the cavity by providing the gas vent 7 in the core portion corresponding to the portion to be the non-design portion following the edge of the skin forming portion of the product. It is possible to prevent the generation of voids in the epidermis. This is communicated with the groove 6 as shown in FIG. 9, 10, and 11 are cross-sectional explanatory views taken along line AA in FIG. 7 (the structures of the end portions are different from those in FIGS. 1, 3, and 5). FIG. 11 is a perspective view of the instrument panel, and portions where a gas vent groove or the like is formed are portions that do not enter the occupant's field of view due to assembly with the mating member. FIG. 13 is a perspective view of a gas vent groove provided in the core member.
Such a gas vent groove provided in the core material is applicable not only to the member provided with the contact rib of the present invention but also to a resin automobile interior member generally composed of a core material and a skin thereon. Is possible. Therefore, in FIG. 9-12, the said abutment rib is not specifically illustrated.
According to such a molding method, the molded product does not require deburring or finishing process after molding, which can contribute to cost reduction.

図７の図示箇所の断面を示すもので、本発明の実施例の説明図。FIG. 8 is a cross-sectional view of the illustrated portion of FIG. 7 and is an explanatory diagram of an embodiment of the present invention. 図１Ａ−Ａ線断面説明図。FIG. 1A-A cross-sectional explanatory view. 図７の図示箇所の断面を示すもので、本発明の別の実施例の説明図。FIG. 8 is a cross-sectional view of the illustrated portion of FIG. 7 and is an explanatory view of another embodiment of the present invention. 図３Ｂ−Ｂ線断面を示す説明図。Explanatory drawing which shows the FIG. 3B-B sectional view. 図７Ａ−Ａ線断面を示すもので、従来例の説明図。FIG. 7A is a cross-sectional view taken along line AA, and is an explanatory diagram of a conventional example. 図５Ｃ−Ｃ線説明図。FIG. 5C is an explanatory diagram of line C-C. インストルメントパネルの説明図。Explanatory drawing of an instrument panel. 図７のＡ−Ａ線断面説明図で、従来例の説明図。It is AA sectional view explanatory drawing of FIG. 7, and explanatory drawing of a prior art example. 図７のＡ−Ａ線断面説明図で、別の従来例の説明図。It is AA sectional view explanatory drawing of FIG. 7, and explanatory drawing of another prior art example. 図７のＡ−Ａ線断面説明図で、本発明の実施例の説明図。It is AA sectional view explanatory drawing of FIG. 7, and explanatory drawing of the Example of this invention. 図７のＡ−Ａ線断面説明図で、本発明の別の実施例の説明図。It is AA sectional view explanatory drawing of FIG. 7, and explanatory drawing of another Example of this invention. 本発明の実施例の説明図で、インパネの斜視図。It is explanatory drawing of the Example of this invention, and is a perspective view of an instrument panel. 本発明の芯材に設けたガス抜き用溝部の拡大説明図。The expansion explanatory drawing of the groove part for degassing provided in the core material of this invention.

Claims (5)

芯材とその上に一体に設けた当てリブを備えたポリウレタン樹脂からなる表皮を有する樹脂製自動車内装部材であって、前記当てリブは相手部材への取付け対応部位に位置し、該当てリブを介して振動による異音の発生を防止するように相手部材に当接固定を可能とした樹脂製自動車内装部材。 A resin automobile interior member having an outer skin made of polyurethane resin provided with a core material and an abutment rib integrally provided thereon, wherein the abutment rib is located at a site corresponding to attachment to a mating member, and the corresponding rib An automobile interior member made of resin that can be abutted and fixed to a mating member so as to prevent generation of noise due to vibration. 該当てリブを取付け部位に複数設けた請求項１記載の樹脂製自動車内装部材。 The resin automobile interior member according to claim 1, wherein a plurality of ribs are provided at the attachment site. 樹脂製自動車内装部材あるいは相手部材がインストルメントパネルである請求項１記載の樹脂製自動車内装部材。 The resin automobile interior member according to claim 1, wherein the resin automobile interior member or the counterpart member is an instrument panel. 芯材をコア型に固定し、表皮形成分の隙間を介してキャビ型を配置し、その隙間にポリウレタン樹脂材料を注入して表皮を一体に形成する樹脂製自動車内装部材の製造方法であって、相手部材の組付け対応部となる表皮部位に当てリブを形成することを特徴とする請求項１〜３記載の樹脂製自動車内装部材の製造方法。 A method for manufacturing a resinous automobile interior member in which a core material is fixed to a core mold, a mold mold is disposed through a gap for skin formation, and a polyurethane resin material is injected into the gap to integrally form a skin. 4. The method for producing a resinous automobile interior member according to claim 1, wherein a rib is formed on a skin portion that becomes an assembly corresponding portion of the mating member. 前記芯材がその表皮端縁部対応部位の外側にガス抜き用溝を有することを特徴とする請求項４記載の樹脂製自動車内装部材の製造方法。
5. The method for producing a resinous automobile interior member according to claim 4, wherein the core member has a gas vent groove outside the portion corresponding to the skin edge portion.
JP2005355663A 2005-12-09 2005-12-09 Plastic automotive interior parts Expired - Fee Related JP4721890B2 (en)

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JP2014091289A (en) * 2012-11-06 2014-05-19 Calsonic Kansei Corp Foamed molded product and method for producing the same
JP2015151104A (en) * 2014-02-19 2015-08-24 河西工業株式会社 Interior component for vehicle
JP2015221627A (en) * 2014-05-23 2015-12-10 トヨタ紡織株式会社 Vehicular interior material
CN111873919A (en) * 2019-05-02 2020-11-03 理查德·弗里茨控股公司 Trim part for a motor vehicle and method for producing the same

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