JP5063466B2 - Mounting structure for molded parts for vehicles - Google Patents

Mounting structure for molded parts for vehicles Download PDF

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JP5063466B2
JP5063466B2 JP2008115799A JP2008115799A JP5063466B2 JP 5063466 B2 JP5063466 B2 JP 5063466B2 JP 2008115799 A JP2008115799 A JP 2008115799A JP 2008115799 A JP2008115799 A JP 2008115799A JP 5063466 B2 JP5063466 B2 JP 5063466B2
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welding
instrument panel
state
molded product
molded article
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JP2009262814A (en
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貴史 榎園
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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 fitting structure of a vehicular molded product, visually displaying the welding state in an oscillation-welded part. <P>SOLUTION: In the fitting structure of the vehicular molded product, a molded product formed of a resin is fitted to an inner surface of an instrument panel by the oscillation welding. A welding state detection means for visually determining the welding state is provided on an oscillation-welded part between the instrument panel and the molded product. Only by visually checking the welding state detection means, the oscillation-welding is reliably displayed, and the quality in the manufacturing process is guaranteed. The welding state is inspected without breaking any oscillation-welded part. The molded product is not scrapped after the inspection thereby. The product cost is reduced, and the cost for treating the molded product scrapped in the inspection becomes unnecessary economically. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、自動車等のインストルメントパネルの樹脂コア材裏面に、樹脂製の成形品を重ねて振動溶着することにより取り付ける車両用成形品の取り付け構造に関する。   The present invention relates to a mounting structure for a molded article for a vehicle that is attached by laying a resin molded article on the back surface of a resin core material of an instrument panel such as an automobile and performing vibration welding.

従来、自動車等の車両には、樹脂により成形された成形品が多く使用されており、例えば車室内の前部に設置されたインストルメントパネルは、ポリプロピレン(PP)等の樹脂をインジェクション成形することにより成形されている。   Conventionally, a molded product made of resin is often used in vehicles such as automobiles. For example, an instrument panel installed in the front part of a vehicle interior is formed by injection molding of resin such as polypropylene (PP). It is molded by.

またインストルメントパネルの内側には、エアコンデショナ(エアコン)により調和された空気を車室内へ吹き出すダクトや、小物類を収納するグローブボックス等の成形品が設けられており、これら成形品は、インストルメントパネルと同様な樹脂によりインジェクション成形やブロー成形により成形されたものが使用されている(例えば、特許文献1参照)。
特開2006−298155号公報
Inside the instrument panel, molded products such as a duct that blows air conditioned by an air conditioner (air conditioner) into the passenger compartment and a glove box that stores small items are provided. What was shape | molded by injection molding or blow molding with the resin similar to an instrument panel is used (for example, refer patent document 1).
JP 2006-298155 A

そして、成形品をインストルメントパネルへ取付ける工程では、成形品に設けられたブラケットの溶着面をインストルメントパネルの樹脂コア材表面に当接させた状態で両者を振動させ、溶着面に発生した摩擦熱により当該溶着面を溶融させて溶着する振動溶着により、インストルメントパネルの樹脂コア材表面に成形品を取り付けている。   In the process of attaching the molded product to the instrument panel, the friction generated on the welded surface is caused by vibrating the bracket with the welded surface of the bracket provided on the molded product in contact with the resin core material surface of the instrument panel. The molded product is attached to the resin core material surface of the instrument panel by vibration welding in which the welding surface is melted and welded by heat.

かかる樹脂成形品を、振動溶着によりインストルメントパネルの樹脂コア材表面に取り付ける成形品の取り付け構造は、リベット等の止着手段を使用せずに大型の成形品を取り付けることが可能なことから、部品コストの低減が図れる上、インストルメントパネルと同材質の樹脂により成形品を成形することにより、異なる種類の樹脂が含まれることがないため、リサイクルも容易となる等の効果が得られる。   Since the mounting structure of the molded product that attaches such a resin molded product to the surface of the resin core material of the instrument panel by vibration welding, it is possible to attach a large molded product without using a fastening means such as a rivet. In addition to being able to reduce the cost of parts, by molding a molded product using a resin of the same material as the instrument panel, different types of resins are not included, so that an effect such as easy recycling can be obtained.

しかし、ダクトのような成形品を、樹脂製ブラケットによりインストルメントパネルの樹脂コア材表面に振動溶着により取り付ける場合、次のような問題がある。   However, when a molded product such as a duct is attached to the surface of the resin core material of the instrument panel with a resin bracket by vibration welding, there are the following problems.

すなわち成形品より突設したブラケットをインストルメントパネルの樹脂コア材表面に当接した状態で両者を振動溶着した場合、溶着後溶着部の溶着状態が外側から目視により検査することができないため、溶着不良が発生した場合にその特定が困難である。   In other words, when both are vibrated and welded with the bracket projecting from the molded product in contact with the resin core surface of the instrument panel, the welded state of the welded part cannot be visually inspected from the outside. When a defect occurs, it is difficult to identify it.

このため従来では、インストルメントパネルへ成形品を振動溶着した後、抜き取り検査で溶着部の溶着状態を検査しているが、検査方法が溶着部を切断して検査する破壊検査となるため、検査した成形品はスクラップとして処理しなければならず、製品が無駄になる上、スクラップ化した成形品を処理するのに費用がかかることから、製品コストを低減できない等の問題があった。   For this reason, conventionally, after the molded product is vibration welded to the instrument panel, the welded state of the welded part is inspected by sampling inspection, but the inspection method is a destructive inspection that cuts and inspects the welded part. The molded product must be processed as scrap, and the product is wasted. Further, since it is expensive to process the scraped molded product, there is a problem that the product cost cannot be reduced.

本発明はかかる問題を改善するためになされたもので、振動溶着した個所の溶着状態が目視により確実に検査することができる車両用成形品の取り付け構造を提供することを目的とするものである。   The present invention has been made to remedy such a problem, and an object of the present invention is to provide a mounting structure for a molded article for a vehicle, which can visually inspect the welded state of a place where vibration welding has been performed. .

本発明の車両用成形品の取り付け構造は、インストルメントパネルの樹脂コア材裏面に、樹脂製の成形品を重ねて振動溶着することにより取り付ける成形品の取り付け構造であって、前記インストルメントパネルに対向する溶着面の裏面に、溶着により状態変化して溶着状態を表示可能な溶着状態検知手段を設けたものである。   The mounting structure for a molded article for a vehicle according to the present invention is a mounting structure for a molded article that is attached by layering a resin molded article on the back surface of the resin core material of the instrument panel and vibration welding, and is attached to the instrument panel. A welding state detecting means capable of displaying the welding state by changing the state by welding is provided on the back surface of the opposite welding surface.

前記構成により、溶着部に設けられた溶着状態検知手段を目視するだけで、振動溶着が確実に行われたかを表示可能にできるため、振動溶着部を破壊せずに溶着状態の検査が行えるようになり、これによって成形品が検査後スクラップになることがないため、製品コストの低減が図れると共に、検査によりスクラップ化した成形品を処理する費用も不要となるため経済的である。   With the above configuration, it is possible to display whether or not the vibration welding has been reliably performed by simply observing the welding state detection means provided in the welding portion, so that the welding state can be inspected without destroying the vibration welding portion. As a result, the molded product does not become scrap after inspection, so that the product cost can be reduced and the cost for processing the molded product scraped by the inspection becomes unnecessary, which is economical.

本発明の車両用成形品の取り付け構造における成形品は、空気通路と、空気通路の外周面から突設された複数のブラケットを有するダクトであって、インストルメントパネルの樹脂コア材表面とブラケットに形成された取り付け座における溶着面とを振動溶着ことにより取り付けると共に、インストルメントパネルに対向する前記溶着面の裏面に、溶着により状態変化して溶着状態を表示可能な溶着状態検知手段を設けるようにしてもよい。   The molded article in the mounting structure for a molded article for a vehicle according to the present invention is a duct having an air passage and a plurality of brackets projecting from the outer peripheral surface of the air passage, the resin core material surface of the instrument panel and the bracket. The welding surface of the formed mounting seat is attached by vibration welding, and on the back surface of the welding surface facing the instrument panel, a welding state detecting means capable of changing the state by welding and displaying the welding state is provided. May be.

前記構成により、溶着部に設けられた溶着状態検知手段を目視するだけで、振動溶着が確実に行われたかを表示可能にできるため、振動溶着部を破壊せずに溶着状態の検査が行えるようになり、特にダクトのような大型の成形品が検査後スクラップになることがないため、製品コストの低減が図れると共に、検査によりスクラップ化した成形品を処理する費用も不要となるため経済的である。   With the above configuration, it is possible to display whether or not the vibration welding has been reliably performed by simply observing the welding state detection means provided in the welding portion, so that the welding state can be inspected without destroying the vibration welding portion. In particular, because large molded products such as ducts do not become scrap after inspection, the product cost can be reduced, and the cost of processing the molded product scraped by inspection becomes unnecessary, which is economical. is there.

また破壊検査による溶着状態を検査する必要がなくなり、製造工程内において目視による検査が可能となるために、製造工程内での品質保証を全うすることができる。   Further, it is not necessary to inspect the welding state by destructive inspection, and visual inspection is possible in the manufacturing process, so that quality assurance can be achieved in the manufacturing process.

本発明の車両用成形品の取り付け構造は、溶着状態検知手段を、インストルメントパネルの樹脂コア材表面に突設された突起と、取り付け座に形成された薄肉部とから形成し、かつ取り付け座の溶着面に突設された溶着リブの高さが振動溶着により減少するのを利用して突起が前記薄肉部を突き破り、薄肉部より突出する前記突起の突出量により溶着状態を表示可能にするようにしてもよい。   The mounting structure for a molded article for a vehicle according to the present invention includes a welding state detecting means formed of a protrusion protruding from the resin core material surface of the instrument panel and a thin wall portion formed at the mounting seat, and the mounting seat By utilizing the fact that the height of the welding rib projecting on the welding surface of the metal is reduced by vibration welding, the projection breaks through the thin portion, and the welding state can be displayed by the projection amount of the projection protruding from the thin portion. You may do it.

前記構成により、取り付け座の下側から薄肉部より突出した突起の突出高さを目視により確認するか、これを更に確実にするためにノギス等の計測手段を使用して測定することにより、溶着状態の検査が可能となるため、製造工程内での品質保証を全うすることができる上、溶着部の検査作業が短時間で能率よく行えるようになる。   By the above configuration, the protrusion height of the protrusion protruding from the thin portion from the lower side of the mounting seat is visually confirmed, or the welding height is measured by using a measuring means such as a caliper to further ensure this. Since the state can be inspected, quality assurance can be achieved within the manufacturing process, and the welded portion can be inspected efficiently in a short time.

本発明の車両用成形品の取り付け構造は、溶着状態検知手段を、インストルメントパネルの樹脂コア材表面に突設された突起と、取り付け座に形成された薄肉部とから形成し、かつ取り付け座の溶着面に突設された溶着リブの高さが振動溶着により減少するのを利用して突起により薄肉部を擦ることにより薄肉部を白化させ、薄肉部の白化状態により溶着状態を表示可能にするようにしてもよい。   The mounting structure for a molded article for a vehicle according to the present invention includes a welding state detecting means formed of a protrusion protruding from the resin core material surface of the instrument panel and a thin wall portion formed at the mounting seat, and the mounting seat By using the fact that the height of the welding rib projecting on the welding surface of the steel plate is reduced by vibration welding, the thin part is whitened by rubbing the thin part with the projection, and the welding state can be displayed by the whitened state of the thin part You may make it do.

前記構成により、取り付け座の下側から薄肉部の白化状態を目視により確認することにより、溶着が確実に行えたかが表示可能にすることができるため、製造工程内での品質保証を全うすることができる上、溶着部の検査作業が短時間で能率よく行えるようになる。   By the above configuration, by visually confirming the whitening state of the thin portion from the lower side of the mounting seat, it is possible to display whether the welding has been performed reliably, so that quality assurance within the manufacturing process can be achieved. In addition, the inspection of the welded portion can be performed efficiently in a short time.

本発明の車両用成形品の取り付け構造は、成形品をブロー成形により成形したものである。   The mounting structure for a molded article for a vehicle according to the present invention is obtained by molding a molded article by blow molding.

前記構成により、高価で精度の高い金型を使用せずに成形品が得られるため、製品のコスト低減が図れるようになる。   With the above configuration, a molded product can be obtained without using an expensive and highly accurate mold, so that the cost of the product can be reduced.

本発明の車両用成形品の取り付け構造によれば、溶着部に設けられた溶着状態検知手段を目視するだけで、振動溶着が確実に行われたかを表示可能にできるため、振動溶着部を破壊せずに溶着状態の検査が行えるようになり、これによって成形品が検査後スクラップになることがないため、製品コストの低減が図れると共に、検査によりスクラップ化した成形品を処理する費用も不要となるため経済的である。   According to the mounting structure for a molded article for a vehicle of the present invention, it is possible to display whether or not vibration welding has been performed reliably only by visually observing the welding state detection means provided in the welding portion. In this way, the welded state can be inspected without causing the molded product to become scrap after inspection, thereby reducing the product cost and eliminating the expense of processing the molded product scraped by the inspection. Therefore, it is economical.

本発明の実施の形態を、図面を参照して詳述する。   Embodiments of the present invention will be described in detail with reference to the drawings.

図1はダクトからなる成形品の斜視図、図2は図1のA円内の拡大図、図3は図2のB−B線に沿う断面図、図4は振動溶着の工程を示す説明図、図5は同拡大図、図6は溶着状態検知手段の断面図である。   1 is a perspective view of a molded product comprising a duct, FIG. 2 is an enlarged view of the circle A in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. 2, and FIG. FIG. 5 is an enlarged view of the same, and FIG. 6 is a cross-sectional view of the welding state detecting means.

図1は、仮想線で示すインストルメントパネル1の樹脂コア材表面にダクトからなる成形品2を、振動溶着により取り付けた状態示すもので、インストルメントパネル1は、図示しない車両の車室前部に設置されている。   FIG. 1 shows a state in which a molded product 2 made of a duct is attached to the surface of a resin core material of an instrument panel 1 indicated by an imaginary line by vibration welding. The instrument panel 1 is a front part of a vehicle compartment (not shown). Is installed.

インストルメントパネル1は、全体が例えばポリプロピレン(PP)等の樹脂により一体成形されており、成形方法としてはインジェクション成形や、ブロー成形が採用されている。   The entire instrument panel 1 is integrally formed of a resin such as polypropylene (PP), for example, and injection molding or blow molding is adopted as a molding method.

インストルメントパネル1の内側に取り付けられた成形品2は、図示しないエアコンにより調和された空気を車室内へ吹き出すもので、車室側の中央に例えば2個所、両側に各1個所の計4個所に空気吹き出し口2a,2bが開口されており、各空気吹き出し口2a,2bには、吹き出される空気の風向や風量を調整するルーバ(図示せず)が取り付けられている。   The molded product 2 attached to the inside of the instrument panel 1 blows out air conditioned by an air conditioner (not shown) into the passenger compartment, for example, two places in the center of the passenger compartment side and four places in total on each side. Air outlets 2a and 2b are opened, and louvers (not shown) for adjusting the air direction and air volume of the air to be blown out are attached to the air outlets 2a and 2b.

各空気吹き出し口2a,2bには、角筒状の空気通路2cがそれぞれ接続されていて、これら空気通路2cを介してエアコンより空気が空気吹き出し口2a,2bへ送風されるようになっている。   A square cylindrical air passage 2c is connected to each of the air outlets 2a and 2b, and air is sent from the air conditioner to the air outlets 2a and 2b via these air passages 2c. .

成形品2は、3次元に屈折する複雑な形状の空気通路2cを有しており、インストルメントパネル1と同様な樹脂によりブロー成形されている。   The molded product 2 has a complicated-shaped air passage 2c that is refracted three-dimensionally, and is blow-molded with the same resin as that of the instrument panel 1.

また成形品2の空気通路2cの途中には、成形品2をインストルメントパネル1の樹脂コア材表面に取り付けるためのブラケット3が一体成形されている。   A bracket 3 for attaching the molded product 2 to the surface of the resin core material of the instrument panel 1 is integrally formed in the air passage 2 c of the molded product 2.

ブラケット3は図2に示すように、空気通路2cの外周面に複数個所突設された腕部3aと、腕部3aの先端に設けられた取り付け座3bとからなり、取り付け座3bの角度は、インストルメントパネル1樹脂コア材表面の取り付け位置とほぼ同じ角度に設定されている。   As shown in FIG. 2, the bracket 3 is composed of an arm portion 3a projecting from a plurality of locations on the outer peripheral surface of the air passage 2c, and an attachment seat 3b provided at the tip of the arm portion 3a. The angle of the attachment seat 3b is The instrument panel 1 is set at substantially the same angle as the mounting position of the resin core material surface.

一方成形品2は、空気通路2cが中空形状となっているため、ブロー成形により空気通路2c部分の一体成形は比較的容易だが、空気通路2cの外周面に突設された複数のブラケット3は、通常のブロー成形では欠肉が発生しやすい。   On the other hand, in the molded product 2, since the air passage 2 c has a hollow shape, it is relatively easy to integrally form the air passage 2 c portion by blow molding, but the plurality of brackets 3 protruding from the outer peripheral surface of the air passage 2 c are In normal blow molding, thinning is likely to occur.

そこでブラケット3部分は、部分的にブローしながら成形する、所謂潰し工程により成形しているが、通常のブロー成形でも成形が可能な形状の場合は、潰し工程を省略しても勿論よい。   Therefore, the bracket 3 part is formed by a so-called crushing process in which it is molded while partially blowing. However, in the case of a shape that can be molded by ordinary blow molding, the crushing process may be omitted.

成形品2をインストルメントパネル1の樹脂コア材表面に取り付けるブラケット3は、溶着面を構成する取り付け座3b面に複数の溶着リブ3cが突設されている。   The bracket 3 for attaching the molded product 2 to the surface of the resin core material of the instrument panel 1 has a plurality of welding ribs 3c protruding from the surface of the attachment seat 3b constituting the welding surface.

これら溶着リブ3cは、振動溶着する際の振動方向または振動方向と直交する方向へ間隔を存して突設されていて、断面がほぼ台形となっており、振動溶着時に上面がインストルメントパネル1とも摩擦熱により溶融するようになっている。   These welding ribs 3c protrude in a vibration direction at the time of vibration welding or in a direction perpendicular to the vibration direction and have a substantially trapezoidal cross section, and the upper surface is the instrument panel 1 at the time of vibration welding. Both are melted by frictional heat.

また複数の溶着リブ3cのうち中央に位置する溶着リブ3cは、中央部に切り欠き3dが形成されていて、この切り欠き3dが位置する取り付け座3bの裏面には、例えば角形の凹部3eが形成されており、溶着リブ3cが形成された取り付け座3bの肉厚が2mm〜4mm程度であるのに対し、切り欠き3dが設けられた部分は、凹部3eを設けることによって肉厚が0.2mm程度の薄肉部4aとなっている。   The welding rib 3c located at the center of the plurality of welding ribs 3c is formed with a notch 3d at the center, and, for example, a rectangular recess 3e is formed on the back surface of the mounting seat 3b where the notch 3d is located. The thickness of the mounting seat 3b on which the welding rib 3c is formed is about 2 mm to 4 mm, whereas the thickness of the portion provided with the notch 3d is 0. The thin portion 4a is about 2 mm.

そしてブラケット3の取り付け座3bが当接するインストルメントパネル1の樹脂コア材表面には、溶着リブ3cの切り欠き3dと合致する位置に円錐または角錐状の突起4bが突設されている。   A conical or pyramidal projection 4b is projected from the surface of the resin core material of the instrument panel 1 with which the mounting seat 3b of the bracket 3 comes into contact with the notch 3d of the welding rib 3c.

突起4bは、インストルメントパネル1樹脂コア材表面から先端までの高さがH1となっており、取り付け座3bの上面から溶着リブ3cの先端までの高さH2とほぼ同じ高さとなっていて、この突起4bと取り付け座3bに形成された薄肉部4aとにより溶着状態検知手段4が形成されている。   The protrusion 4b has a height H1 from the surface of the instrument panel 1 resin core material to the tip, and is substantially the same height H2 from the upper surface of the mounting seat 3b to the tip of the welding rib 3c, The welding state detecting means 4 is formed by the projection 4b and the thin portion 4a formed on the mounting seat 3b.

次に前記構成された車両用成形品の取り付け構造の作用を説明すると、インストルメントパネル1は、インジェクション成形等で成形し、ダクト等の成形品2は、ブロー成形により成形する。   Next, the operation of the above-described structure for mounting a molded product for a vehicle will be described. The instrument panel 1 is molded by injection molding or the like, and the molded product 2 such as a duct is molded by blow molding.

次にインストルメントパネル1の樹脂コア材表面に成形品2を取り付けるため、インストルメントパネル1樹脂コア材表面の所定位置に成形品2を位置決めした状態で、両者を振動溶着機(図示せず)に図4に示すようにセットする。   Next, in order to attach the molded product 2 to the surface of the resin core material of the instrument panel 1, both are vibration welders (not shown) in a state where the molded product 2 is positioned at a predetermined position on the surface of the resin core material of the instrument panel 1. Is set as shown in FIG.

このとき図5に示すように、インストルメントパネル1樹脂コア材表面の所定位置に取り付け座3bの上面に突設された溶着リブ3cの上面が密着するが、同時に溶着リブ3cの高さH2とほぼ同じ高さH1に形成された溶着状態検知手段4の突起4b先端が、取り付け座3b側の薄肉部4a上面に当接された状態となる。   At this time, as shown in FIG. 5, the upper surface of the welding rib 3c protruding from the upper surface of the mounting seat 3b is in close contact with a predetermined position on the surface of the instrument panel 1 resin core material. The tip of the protrusion 4b of the welding state detection means 4 formed at substantially the same height H1 is in contact with the upper surface of the thin portion 4a on the mounting seat 3b side.

この状態から振動溶着機によりインストルメントパネル1と成形品2を相対方向へ振動させて両者の振動溶着を開始すると、溶着リブ3cの上面及びインストルメントパネル1の樹脂コア材表面が摩擦熱により溶融されて、溶着リブ3cの高さH2が除々に減少するのに伴い、インストルメントパネル1の樹脂コア材表面に突設された突起4bは、高さH1を維持したまま取り付け座3b側の薄肉部4aを図6に示すように突き破って、取り付け座3bの下面側へ突出する。   When the instrument panel 1 and the molded product 2 are vibrated relative to each other by the vibration welding machine from this state and the vibration welding of both is started, the upper surface of the welding rib 3c and the resin core material surface of the instrument panel 1 are melted by frictional heat. As the height H2 of the welding rib 3c gradually decreases, the protrusion 4b protruding from the surface of the resin core material of the instrument panel 1 has a thin wall on the mounting seat 3b side while maintaining the height H1. The part 4a is pierced as shown in FIG. 6 and protrudes to the lower surface side of the mounting seat 3b.

すなわち溶着リブ3cが溶融して高さH2が減少した分、突起4bの先端が薄肉部4aの下面側へ突出することになり、溶着により状態変化したことになる。   That is, as the welding rib 3c is melted and the height H2 is reduced, the tip of the projection 4b protrudes to the lower surface side of the thin portion 4a, and the state is changed by welding.

以上のようにしてインストルメントパネル1と、成形品2の複数個所に突設したブラケット3を同時に振動溶着したら、溶着部の硬化を待ってインストルメントパネル1と成形品2が一体化された製品を振動溶着機より取り外し、振動溶着を終了する。   When the instrument panel 1 and the brackets 3 projecting at a plurality of locations of the molded product 2 are vibration welded simultaneously as described above, the instrument panel 1 and the molded product 2 are integrated after the welded portion is cured. Is removed from the vibration welding machine to finish the vibration welding.

その後振動溶着が確実に行われたかを検査するため、製品を反転した状態で取り付け座3bの下側から薄肉部4aより突出した突起4bの突出高さH3を目視により確認するか、これを更に確実にするためにノギス等の計測手段を使用して突起4bの突出高さH3を測定するようにしてもよい。   Thereafter, in order to inspect whether vibration welding has been performed reliably, the protrusion height H3 of the protrusion 4b protruding from the thin portion 4a from the lower side of the mounting seat 3b in a state where the product is inverted is visually confirmed, or further In order to ensure, you may make it measure the protrusion height H3 of the protrusion 4b using measuring means, such as a caliper.

薄肉部の下面より突出した突起4bの高さH3は、溶着リブ3cの溶融により減少した高さとほぼ一致するので、予め閾値を設定して、この閾値を突起4bの突出高さH3が超えた場合は、振動溶着が確実に表示可能にすることにより、振動溶着部を破壊せずに溶着状態の検査が行えるため、検査後製品がスクラップになることがない。   Since the height H3 of the protrusion 4b protruding from the lower surface of the thin portion substantially coincides with the height reduced by melting the welding rib 3c, a threshold value is set in advance, and the protrusion height H3 of the protrusion 4b exceeds this threshold value. In this case, since the vibration welding can be reliably displayed, the welded state can be inspected without destroying the vibration welding portion, so that the product after inspection does not become scrap.

また破壊検査による溶着状態を検査する必要がなくなり、製造工程内において目視による検査が可能となるために、製造工程内での品質保証を全うすることができる。   Further, it is not necessary to inspect the welding state by destructive inspection, and visual inspection is possible in the manufacturing process, so that quality assurance can be achieved in the manufacturing process.

なお前記実施の形態では、溶着状態検知手段4をインストルメントパネル1の樹脂コア材表面に突設した突起4bにより取り付け座3b側の薄肉部4aを突き破り、薄肉部4aより突出した突起4bの突出量により溶着状態を表示するようにしたが、図7に示す変形例のようにして溶着状態を表示可能にするようにしてもよい。   In the above-described embodiment, the thinned portion 4a on the side of the mounting seat 3b is pierced by the projection 4b in which the welding state detecting means 4 projects from the resin core material surface of the instrument panel 1, and the projection 4b that projects from the thinned portion 4a is projected. Although the welding state is displayed according to the amount, the welding state may be displayed as in the modification shown in FIG.

図7に示す変形例では、取り付け座3b側に形成した薄肉部4aの肉厚を、突起4bでは突き破れない程度の厚さに設定し、インストルメントパネル1の樹脂コア材表面に突設した突起4bは、前記実施の形態とほぼ同様なものにしてある。   In the modification shown in FIG. 7, the thickness of the thin portion 4 a formed on the mounting seat 3 b side is set to a thickness that does not break through the protrusion 4 b, and protrudes from the surface of the resin core material of the instrument panel 1. The protrusion 4b is substantially the same as in the above embodiment.

これによって振動溶着を開始すると、振動により突起4bが薄肉部4aの表面を擦り始めるため、溶着により状態変化して、薄肉部4aが白化を始める。   Thus, when vibration welding is started, the projection 4b starts to rub the surface of the thin portion 4a due to vibration, so that the state changes due to welding and the thin portion 4a starts to whiten.

そして振動溶着が進行し、溶着リブ3cの高さH2が減少するのに伴い突起4bと薄肉部4aの接触面圧が上昇するため、薄肉部4aの白化がさらに進む。   As the vibration welding proceeds and the height H2 of the welding rib 3c decreases, the contact surface pressure between the protrusion 4b and the thin portion 4a increases, and thus the whitening of the thin portion 4a further proceeds.

以上のようにしてインストルメントパネル1と、成形品2の複数個所に突設したブラケット3を同時に振動溶着したら、溶着部の硬化を待ってインストルメントパネル1と成形品2が一体化された製品を振動溶着機より取り外し、振動溶着を終了する。   When the instrument panel 1 and the brackets 3 projecting at a plurality of locations of the molded product 2 are vibration welded simultaneously as described above, the instrument panel 1 and the molded product 2 are integrated after the welded portion is cured. Is removed from the vibration welding machine to finish the vibration welding.

その後振動溶着が確実に行われたかを検査するため、製品を反転した状態で取り付け座3bの下側から薄肉部4aを目視により確認し、薄肉部4aの白化状態、例えば白化面積等により溶着状態を表示可能にしている。   After that, in order to inspect whether vibration welding has been performed reliably, the thinned portion 4a is visually confirmed from the lower side of the mounting seat 3b with the product reversed, and the thinned portion 4a is welded due to the whitened state, for example, the whitened area. Can be displayed.

すなわち薄肉部4aの白化面積が少なければ溶着状態が不十分であり、薄肉部4aの白化が進んで白化面積が大きくなっていれば溶着状態は十分であると判定することができ、前記実施の形態と同様に、振動溶着部を破壊せずに溶着状態の検査が行えるため、検査後製品がスクラップになることがないと共に、破壊検査による溶着状態を検査する必要がなくなり、製造工程内において目視による検査が可能となるために、製造工程内での品質保証を全うすることができる。   That is, if the thinned portion 4a has a small whitened area, the welded state is insufficient, and if the thinned portion 4a is whitened and the whitened area is large, it can be determined that the welded state is sufficient. Like the form, the welded state can be inspected without destroying the vibration welded part, so that the product after inspection does not become scrap, and it is not necessary to inspect the welded state by destructive inspection. Therefore, quality assurance within the manufacturing process can be achieved.

なお前記実施の形態では、成形品2をブロー成形したダクトの場合について説明したが、インストルメントパネル1の内側に取り付けるグローブボックスのような成形品でもよく、インジェクション成形した成形品にも適用できるものである。   In addition, although the said embodiment demonstrated the case of the duct which carried out the blow molding of the molded article 2, a molded article like the glove box attached to the inner side of the instrument panel 1 may be used, and it can apply also to the injection molded molded article. It is.

本発明の車両用成形品の取り付け構造は、溶着部に設けられた溶着状態検知手段を目視するだけで、振動溶着が確実に表示可能とすることができるため、自動車等のインストルメントパネルに、ダクトのような樹脂成形品を振動溶着により取り付ける車両用成形品の取り付け構造等に好適である。   Since the mounting structure of the molded article for a vehicle of the present invention can be surely displayed by vibration welding only by visually observing the welding state detection means provided in the welding portion, on an instrument panel such as an automobile, It is suitable for a mounting structure of a molded article for a vehicle in which a resin molded article such as a duct is attached by vibration welding.

本発明の実施の形態になる車両用成形品の取り付け構造を示す斜視図である。It is a perspective view which shows the attachment structure of the molded article for vehicles which becomes embodiment of this invention. 図1のA円内の拡大図である。It is an enlarged view in A circle of FIG. 図2のB−B線に沿う断面図である。It is sectional drawing which follows the BB line of FIG. 本発明の実施の形態になる車両用成形品の取り付け構造の振動溶着工程を示す説明図である。It is explanatory drawing which shows the vibration welding process of the attachment structure of the molded article for vehicles which becomes embodiment of this invention. 本発明の実施の形態になる車両用成形品の取り付け構造の振動溶着工程を示す拡大図である。It is an enlarged view which shows the vibration welding process of the attachment structure of the molded article for vehicles which becomes embodiment of this invention. 本発明の実施の形態になる車両用成形品の取り付け構造に採用した溶着状態検知手段を示す断面図である。It is sectional drawing which shows the welding state detection means employ | adopted as the attachment structure of the molded article for vehicles which becomes embodiment of this invention. 本発明の実施の形態になる車両用成形品の取り付け構造に採用した溶着状態検知手段の変形例を示す断面図である。It is sectional drawing which shows the modification of the welding state detection means employ | adopted as the attachment structure of the molded article for vehicles which becomes embodiment of this invention.

符号の説明Explanation of symbols

1 インストルメントパネル
2 成形品
2c 空気通路
3 ブラケット
3b 取り付け座
3c 溶着リブ
4 溶着状態検知手段
4a 薄肉部
4b 突起



DESCRIPTION OF SYMBOLS 1 Instrument panel 2 Molded product 2c Air passage 3 Bracket 3b Mounting seat 3c Welding rib 4 Welding state detection means 4a Thin part 4b Protrusion



Claims (5)

インストルメントパネルの樹脂コア材裏面に、樹脂製の成形品を重ねて振動溶着することにより取り付ける成形品の取り付け構造であって、前記インストルメントパネルに対向する溶着面の裏面に、溶着により状態変化して溶着状態を表示可能な溶着状態検知手段を設けたことを特徴とする車両用成形品の取り付け構造。   It is the mounting structure of the molded product that is attached by overlaying the resin molded product on the back side of the resin core material of the instrument panel and vibration welding, and the state changes by welding on the back side of the welding surface that faces the instrument panel. An installation structure for a molded article for a vehicle, characterized in that a welding state detecting means capable of displaying the welding state is provided. 前記成形品は、空気通路と、前記空気通路の外周面から突設された複数のブラケットを有するダクトであって、前記インストルメントパネルの樹脂コア材表面と前記ブラケットに形成された取り付け座における溶着面とを振動溶着ことにより取り付けると共に、前記インストルメントパネルに対向する前記溶着面の裏面に、溶着により状態変化して溶着状態を表示可能な溶着状態検知手段を設けてなる請求項1に記載の車両用成形品の取り付け構造。   The molded article is a duct having an air passage and a plurality of brackets protruding from an outer peripheral surface of the air passage, and is welded to a resin core material surface of the instrument panel and a mounting seat formed on the bracket. The welding state detecting means according to claim 1, wherein the welding surface detecting means capable of displaying the welding state by changing the state by welding is provided on the back surface of the welding surface facing the instrument panel. Mounting structure for molded products for vehicles. 前記溶着状態検知手段を、前記インストルメントパネルの樹脂コア材表面に突設された突起と、前記取り付け座に形成された薄肉部とから形成し、かつ前記取り付け座の前記溶着面に突設された溶着リブの高さが振動溶着により減少するのを利用して前記突起が前記薄肉部を突き破り、前記薄肉部より突出する前記突起の突出量により溶着状態を表示可能にしたことを特徴とする請求項2に記載の車両用成形品の取り付け構造。   The welding state detection means is formed of a projection protruding from the surface of the resin core material of the instrument panel and a thin portion formed at the mounting seat, and is projected from the welding surface of the mounting seat. The height of the weld rib is reduced by vibration welding, so that the projection breaks through the thin portion, and the welding state can be displayed by the projection amount of the projection protruding from the thin portion. The mounting structure of the molded article for vehicles according to claim 2. 前記溶着状態検知手段を、前記インストルメントパネルの樹脂コア材表面に突設された突起と、前記取り付け座に形成された薄肉部とから形成し、かつ前記取り付け座の溶着面に突設された溶着リブの高さが振動溶着により減少するのを利用して前記突起により前記薄肉部を擦ることにより前記薄肉部を白化させ、前記薄肉部の白化状態により溶着状態を表示可能にしたことを特徴とする請求項2に記載の車両用成形品の取り付け構造。   The welding state detection means is formed of a protrusion protruding from the surface of the resin core material of the instrument panel and a thin portion formed at the mounting seat, and protruding from the welding surface of the mounting seat. Utilizing the fact that the height of the welding rib is reduced by vibration welding, the thin portion is whitened by rubbing the thin portion with the projection, and the welding state can be displayed by the whitened state of the thin portion. The mounting structure for a molded article for a vehicle according to claim 2. 前記成形品をブロー成形により成形してなる請求項1ないし4の何れかに記載の車両用成形品の取り付け構造。





The mounting structure for a molded article for a vehicle according to any one of claims 1 to 4, wherein the molded article is molded by blow molding.





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