JP2003015654A - Gap packing material - Google Patents
Gap packing materialInfo
- Publication number
- JP2003015654A JP2003015654A JP2001194988A JP2001194988A JP2003015654A JP 2003015654 A JP2003015654 A JP 2003015654A JP 2001194988 A JP2001194988 A JP 2001194988A JP 2001194988 A JP2001194988 A JP 2001194988A JP 2003015654 A JP2003015654 A JP 2003015654A
- Authority
- JP
- Japan
- Prior art keywords
- void
- filling material
- shape
- void filling
- gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Body Structure For Vehicles (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、加熱により膨張し
て空隙を充填する空隙充填材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a void filling material that expands by heating to fill voids.
【０００２】[0002]
【従来の技術】従来より、自動車のピラー等の内部の空
隙を充填することによって、遮音・制振特性及び強度を
向上させる技術が広く利用されている。そして、特開平
１−１６４６４１号公報にあるように、２枚のシート状
の熱硬化型発泡性材料の間に圧縮状態のウレタンフォー
ムを封入することによって形成された空隙充填材が知ら
れている。2. Description of the Related Art Conventionally, there has been widely used a technique for improving sound insulation / damping characteristics and strength by filling voids inside a pillar of an automobile. As disclosed in Japanese Patent Laid-Open No. 1-164641, there is known a void filling material formed by enclosing a urethane foam in a compressed state between two sheets of thermosetting foamable material. .
【０００３】この空隙充填材は、センターピラー等の筒
状構造の部品が組み立てられる前に、部品の内壁に粘着
される。粘着は、熱硬化型発泡性材料自身の粘着力を利
用して、あるいは接着剤・両面粘着テープ等を用いて行
われている。そして、例えば、当該部品の塗装が施され
た後、乾燥のために加熱されると、シート状の熱硬化型
発泡性材料が発泡して膨張する。The void filling material is adhered to the inner wall of the component such as the center pillar before the component having the tubular structure is assembled. Adhesion is performed by utilizing the adhesive force of the thermosetting foamable material itself, or by using an adhesive, a double-sided adhesive tape, or the like. Then, for example, when the component is coated and then heated for drying, the sheet-shaped thermosetting foamable material foams and expands.
【０００４】また、このとき、熱硬化型発泡材料は加熱
によって徐々に柔らかくなり、ウレタンフォームを圧縮
状態に保持するための拘束力が低下するので、ウレタン
フォームの形状が徐々に復元する。そして、形状の復元
したウレタンフォームは、空隙充填材の芯部材として機
能し、空隙充填材が好適な形状に膨張するように導く。
この結果、センターピラー等の内部の空隙は、膨張した
熱硬化型発泡性材料と、形状の復元したウレタンフォー
ムとによって充填され、好適な遮音・制振特性及び強度
を得ることができる。At this time, the thermosetting foam material is gradually softened by heating and the restraining force for holding the urethane foam in a compressed state is lowered, so that the shape of the urethane foam is gradually restored. Then, the urethane foam whose shape has been restored functions as a core member of the void filling material and guides the void filling material to expand into a suitable shape.
As a result, the voids inside the center pillar and the like are filled with the expanded thermosetting foamable material and the urethane foam whose shape has been restored, and it is possible to obtain suitable sound insulation and vibration damping characteristics and strength.
【０００５】[0005]
【発明が解決しようとする課題】こうした従来のもので
は、センターピラー等の筒状構造の部品が、断面「コ」
字状の２つの部材を突き合わせて溶接等により一体構造
とした、いわゆる最中構造であった。一体とする前に、
一方の部材の平坦な内壁に空隙充填材を粘着している。SUMMARY OF THE INVENTION In such a conventional type, a part having a cylindrical structure such as a center pillar has a cross section of "U".
It was a so-called middle structure in which two character-shaped members were butted against each other and integrated by welding or the like. Before being united
The void filling material is adhered to the flat inner wall of one member.
【０００６】しかしながら、センターピラー等の筒状構
造の部品を、最中構造ではなく、パイプ等から直接筒状
に形成する場合もあり、その場合には、内壁に空隙充填
材を粘着し難いという問題があった。また、筒状構造の
部品に貫通孔を形成し、この貫通孔にクリップ等を用い
て空隙充填材を取り付ける場合でも同様であった。However, there are cases where a tubular structure part such as a center pillar is formed directly into a tubular shape from a pipe or the like instead of the middle structure. In that case, it is difficult to adhere the void filling material to the inner wall. There was a problem. The same applies to the case where a through hole is formed in a tubular component and a void filling material is attached to the through hole by using a clip or the like.
【０００７】本発明の課題は、筒状構造の部品へ挿入し
て保持することが容易な空隙充填材を提供することにあ
る。An object of the present invention is to provide a void filling material that can be easily inserted and held in a tubular component.
【０００８】[0008]
【課題を解決するための手段】かかる課題を達成すべ
く、本発明は課題を解決するため次の手段を取った。即
ち、加熱により膨張して空隙を充填する空隙充填材にお
いて、前記空隙に弾性変形させて挿入可能な形状に形成
したことを特徴とする空隙充填材がそれである。In order to achieve the above object, the present invention takes the following means in order to solve the object. That is, a void filling material that is expanded by heating to fill the voids is characterized in that it is elastically deformed into the voids and formed into a shape that can be inserted.
【０００９】前記空隙の断面形状が矩形であるときに
は、該矩形の対角線よりも長い板状に、かつ、湾曲させ
て前記空隙内に挿入可能に形成してもよい。また、リン
グ状に形成してもよく、放射状に複数の枝部を有する構
造でもよく、あるいは、外形が球状に形成されていても
よい。更に、前記空隙の容積に応じた膨張部を設けても
よい。When the cross-sectional shape of the void is rectangular, it may be formed in a plate shape longer than the diagonal line of the rectangle and curved so that it can be inserted into the void. Further, it may be formed in a ring shape, may have a structure having a plurality of branch portions in a radial shape, or may have a spherical outer shape. Further, an expansion part may be provided according to the volume of the void.
【００１０】[0010]
【発明の実施の形態】以下本発明の実施の形態を図面に
基づいて詳細に説明する。図１に示すように、１は空隙
充填材で、２はセンターピラー等の筒状構造部品であ
る。筒状構造部品２は、パイプ等から筒状に形成されて
おり、その両端は開放されている。本実施形態の筒状構
造部品２の内部空隙４の断面形状は、矩形に形成されて
いるが、これに限定されるものではない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. As shown in FIG. 1, 1 is a void filling material and 2 is a tubular structural part such as a center pillar. The tubular structural component 2 is formed of a pipe or the like into a tubular shape, and both ends thereof are open. The cross-sectional shape of the internal void 4 of the tubular structural component 2 of this embodiment is formed in a rectangular shape, but the shape is not limited to this.
【００１１】本実施形態の空隙充填材１は、図２（イ）
の平面図、図２（ロ）の側面図に示すように、長方形の
板状に形成されている。筒状構造部品２の空隙４の対角
線の長さＡと、空隙充填材１の長辺の長さＢ１とでは、
長辺の長さＢ１が対角線の長さＡよりも長く（Ｂ１＞
Ａ）なるように形成されている。長辺の長さＢ１を対角
線の長さＡよりも長く形成しても、図１に示すように、
空隙充填材１を弾性変形させて、空隙４に挿入できるよ
うに、空隙充填材１が形成されている。The void filling material 1 of this embodiment is shown in FIG.
As shown in the plan view and the side view of FIG. 2B, it is formed in a rectangular plate shape. With the length A of the diagonal line of the void 4 of the tubular structural component 2 and the length B1 of the long side of the void filling material 1,
The long side length B1 is longer than the diagonal length A (B1>
A) is formed. Even if the long side length B1 is formed longer than the diagonal length A, as shown in FIG.
The void filler 1 is formed so that the void filler 1 can be elastically deformed and inserted into the void 4.
【００１２】また、空隙充填材１を弾性変形させて空隙
４に挿入した際に、空隙充填材１の短辺側と空隙４の内
壁とが接触する。そして、空隙充填材１の弾性力によ
り、空隙充填材１と内壁との間に摩擦力が発生する。こ
の摩擦力の大きさは、空隙充填材１が筒状構造部品２か
らずり落ちない程度であればよい。When the void filler 1 is elastically deformed and inserted into the void 4, the short side of the void filler 1 and the inner wall of the void 4 come into contact with each other. Then, due to the elastic force of the void filler 1, a frictional force is generated between the void filler 1 and the inner wall. The magnitude of the frictional force may be such that the void filling material 1 does not slide down from the tubular structural component 2.
【００１３】空隙充填材１を空隙４に挿入する際に、空
隙充填材１を弾性変形させて生じる弾性力が、前述した
摩擦力を発生するように、空隙充填材１が形成される。
空隙充填材１が重い場合には、大きな弾性力が発生する
ように、適当な弾性係数等を有するように材質等を選定
すればよい。また、適当な弾性力が発生するように、空
隙充填材１の短辺の長さＢ２や厚さｔを適当な長さ及び
厚さにするとよい。The void filling material 1 is formed such that the elastic force generated by elastically deforming the void filling material 1 when the void filling material 1 is inserted into the void 4 generates the above-mentioned frictional force.
When the void filling material 1 is heavy, the material and the like may be selected so as to generate a large elastic force and have an appropriate elastic coefficient and the like. In addition, the length B2 of the short side and the thickness t of the void filling material 1 may be set to an appropriate length and thickness so that an appropriate elastic force is generated.
【００１４】空隙充填材１のほぼ中央には、膨張部６が
形成されている。膨張部６は、加熱して発泡させた際
に、空隙４に隙間なく充填されるように、空隙４の容積
に応じた大きさに、また、空隙４の断面形状と、膨張部
６の断面形状とが相似形となるように形成するのが好ま
しい。尚、膨張部６を含む空隙充填材１の全体積は、空
隙４の容積を充填できるように形成されている。An inflating portion 6 is formed substantially at the center of the void filling material 1. The expansion part 6 has a size corresponding to the volume of the space 4 so that the space 4 is filled with the space when heated and foamed, and the cross-sectional shape of the space 4 and the cross-section of the expansion part 6. It is preferable to form such that the shape and the shape are similar to each other. In addition, the entire volume of the void filling material 1 including the expansion portion 6 is formed so as to fill the volume of the void 4.
【００１５】空隙充填材１は、ポリマー、無機充填剤、
架橋剤、発泡剤を調整・配合したもので、ポリマーとし
ては、例えば、熱可塑性樹脂が挙げられ、ポリオレフィ
ン、エチレンビニールアセテートポリマー、エチレンピ
ロピレンゴム、スチレンブタジエンゴム等が挙げられ
る。The void filler 1 is a polymer, an inorganic filler,
A polymer obtained by adjusting and blending a cross-linking agent and a foaming agent, and examples of the polymer include thermoplastic resins such as polyolefin, ethylene vinyl acetate polymer, ethylene pyropyrene rubber, and styrene butadiene rubber.
【００１６】無機充填剤としては、炭酸カルシウム、硫
酸バリウム、フェライト、シリカ等を用いることができ
る。架橋剤としてはパーオキサイド等を用いることがで
き、発泡剤としては、アゾジカルボンアミド、ジニトロ
ペンタメチレンテトラミン等を用いることができる。こ
の空隙充填材１は、１４０〜２３０℃で数十分間加熱す
ると、数倍〜数十倍に膨張する。As the inorganic filler, calcium carbonate, barium sulfate, ferrite, silica or the like can be used. As the crosslinking agent, peroxide or the like can be used, and as the foaming agent, azodicarbonamide, dinitropentamethylenetetramine or the like can be used. The void filling material 1 expands several times to several tens of times when heated at 140 to 230 ° C. for several tens of minutes.
【００１７】次に、前述した本実施形態の空隙充填材の
作動について説明する。まず、図１に示すように、空隙
充填材１を弾性変形させて、空隙充填材１の長辺側を弓
なりに湾曲させて、空隙４に挿入する。この弾性変形に
よる弾性力により、空隙充填材１の短辺側と筒状構造部
品２の内壁との間に摩擦が生じる。この摩擦力により、
空隙充填材１が筒状構造部品２の空隙４に保持される。
従って、筒状構造部品２を加熱炉等に搬送する際に、空
隙充填材１は脱落しない。Next, the operation of the above-described void filling material of this embodiment will be described. First, as shown in FIG. 1, the void filling material 1 is elastically deformed, the long side of the void filling material 1 is curved in a bow shape, and the void filling material 1 is inserted into the void 4. Due to the elastic force due to this elastic deformation, friction occurs between the short side of the void filling material 1 and the inner wall of the tubular structural component 2. By this frictional force,
The void filler 1 is retained in the void 4 of the tubular structural component 2.
Therefore, the void filler 1 does not fall off when the tubular structural component 2 is transported to a heating furnace or the like.
【００１８】空隙充填材１を装着した筒状構造部品２を
１４０〜２３０℃で数十分間加熱すると、数倍〜数十倍
に膨張して、空隙４が充填される。その際、膨張部６の
膨張により、空隙４が隙間なく充填される。また、加熱
当初は、筒状構造部品２に接触している短辺側から発泡
が始まるため、摩擦力は低下するが、加熱により接着力
が増加し、この接着力により空隙充填材１が空隙４に保
持される。その後、空隙充填材１の全体に発泡が進行し
て、空隙４が充填される。When the tubular structural component 2 having the void filling material 1 mounted thereon is heated at 140 to 230 ° C. for several tens of minutes, it expands several times to several tens of times to fill the voids 4. At this time, the expansion 4 expands to fill the voids 4 without any gap. Further, at the beginning of heating, since foaming starts from the short side that is in contact with the tubular structural part 2, the frictional force decreases, but the adhesive force increases due to heating, and this adhesive force causes the void filling material 1 to form Held at 4. Then, foaming progresses throughout the void filling material 1 to fill the voids 4.
【００１９】次に、前述した空隙充填材１と異なる第２
実施形態の空隙充填材１１について図３によって説明す
る。本第２実施形態の空隙充填材１１は、リング状に形
成されており、その外周には径方向に突出した多数の突
部１２が形成されている。材質等は前述した空隙充填材
１と同様である（以下同様）。リング状に形成すること
により、板状に形成する場合よりも、大きな弾性力が得
られやすい。また、突部１２を形成することにより、よ
り大きな摩擦力が得られやすく、空隙充填材１１の重量
が重い場合等に適する。更に、空隙充填材１１の外周を
指でつまむことにより、片手でも弾性変形させやすく、
空隙への挿入がしやすい。Next, a second different from the above-mentioned void filling material 1
The void filling material 11 of the embodiment will be described with reference to FIG. The void filling material 11 of the second embodiment is formed in a ring shape, and a large number of projections 12 projecting in the radial direction are formed on the outer circumference thereof. The material and the like are the same as those of the void filling material 1 described above (the same applies hereinafter). By forming in a ring shape, a larger elastic force can be obtained more easily than in the case of forming in a plate shape. Further, by forming the protrusion 12, it is easy to obtain a larger frictional force, and it is suitable when the weight of the void filling material 11 is heavy. Furthermore, by pinching the outer periphery of the void filling material 11 with a finger, it is easy to elastically deform even with one hand,
Easy to insert into voids.
【００２０】また、図４に示す第３実施形態の空隙充填
材２１のように、板状の空隙充填材２１を予め屈曲形成
し、空隙に挿入する際には、これを更に弾性変形させる
ようにしてもよい。このように、予め屈曲させることに
より、挿入する際に、弾性変性させやすくなる。Further, like the void filling material 21 of the third embodiment shown in FIG. 4, when the plate-like void filling material 21 is bent in advance and is inserted into the void, it is further elastically deformed. You may By pre-bending in this way, it becomes easier to elastically deform when inserting.
【００２１】更に、図５に示す第４実施形態の空隙充填
材３１のように、径方向に放射状に複数の枝部３２を突
出させた構成としてもよい。枝部３２を弾性変形させ
て、空隙に挿入するので、空隙充填材３１を空隙に押し
込むようにして挿入でき、予め弾性変形させなくても容
易に挿入できる。Further, as in the void filling material 31 of the fourth embodiment shown in FIG. 5, a plurality of branch portions 32 may be radially projected in the radial direction. Since the branch portion 32 is elastically deformed and inserted into the void, the void filler 31 can be inserted by being pushed into the void, and can be easily inserted without elastically deforming in advance.
【００２２】また、図６に示す空隙充填材４１のよう
に、内部が空洞の外形を球状に形成してもよい。あるい
は、空洞に限らず、スポンジ状で外形を球状に形成して
もよい。以上本発明はこの様な実施形態に何等限定され
るものではなく、本発明の要旨を逸脱しない範囲におい
て種々なる態様で実施し得る。Further, as in the void filling material 41 shown in FIG. 6, the outer shape of the cavity may be formed into a spherical shape. Alternatively, the outer shape is not limited to a cavity, and may be formed in a sponge shape and a spherical outer shape. The present invention is not limited to such an embodiment as described above, and can be implemented in various modes without departing from the scope of the present invention.
【００２３】[0023]
【発明の効果】以上詳述したように本発明の空隙充填材
は、筒状構造部品がパイプ等から形成されたものであっ
ても、弾性変形させることにより、その空隙に挿入して
保持することが容易にできるという効果を奏する。As described above in detail, the void filling material of the present invention, even if the tubular structural component is formed of a pipe or the like, is elastically deformed to be inserted and retained in the void. This has the effect of making it easy.
【図１】本発明の一実施形態としての空隙充填材を筒状
構造部品に挿入した状態の斜視図である。FIG. 1 is a perspective view showing a state where a void filling material according to an embodiment of the present invention is inserted into a tubular structural component.
【図２】本実施形態の空隙充填材の説明図である。FIG. 2 is an explanatory diagram of a void filling material according to the present embodiment.
【図３】第２実施形態の空隙充填材の斜視図である。FIG. 3 is a perspective view of a void filling material according to a second embodiment.
【図４】第３実施形態の空隙充填材の斜視図である。FIG. 4 is a perspective view of a void filling material according to a third embodiment.
【図５】第４実施形態の空隙充填材の正面図である。FIG. 5 is a front view of a void filling material according to a fourth embodiment.
【図６】第５実施形態の空隙充填材の正面図である。FIG. 6 is a front view of a void filling material according to a fifth embodiment.
１，１１，２１，３１，４１…空隙充填材 ２…筒状構造部品 ４…空隙 ６…膨張部 １２…突部 ３２…枝部 1, 11, 21, 31, 41 ... Void filling material 2 ... Cylindrical structure part 4 ... Void 6 ... expansion part 12 ... protrusion 32 ... branch
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3D003 AA01 AA07 AA10 BB02 CA33 CA34 CA35 3D023 BA02 BB09 BC01 BD08 BE02 BE31 5D061 AA09 AA26 DD20 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3D003 AA01 AA07 AA10 BB02 CA33 CA34 CA35 3D023 BA02 BB09 BC01 BD08 BE02 BE31 5D061 AA09 AA26 DD20
Claims (6)
充填材において、 前記空隙に弾性変形させて挿入可能な形状に形成したこ
とを特徴とする空隙充填材。1. A void filling material that expands by heating to fill voids, wherein the void filler is elastically deformed and formed into a shape that can be inserted.
対角線よりも長い板状に、かつ、湾曲させて前記空隙内
に挿入可能に形成されたことを特徴とする請求項１記載
の空隙充填材。2. The cross-sectional shape of the void is rectangular, and is formed in a plate shape longer than a diagonal line of the rectangle, and is curved so that the void can be inserted into the void. Void filling material.
請求項１記載の空隙充填材。3. The void filling material according to claim 1, which is formed in a ring shape.
とする請求項１記載の空隙充填材。4. The void filling material according to claim 1, which has a plurality of branch portions radially.
る請求項１記載の空隙充填材。5. The void filling material according to claim 1, wherein the outer shape is formed into a spherical shape.
設けたことを特徴とする請求項２記載の空隙充填材。6. The void filling material according to claim 2, further comprising an inflating portion corresponding to the volume of the void.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001194988A JP2003015654A (en) | 2001-06-27 | 2001-06-27 | Gap packing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001194988A JP2003015654A (en) | 2001-06-27 | 2001-06-27 | Gap packing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003015654A true JP2003015654A (en) | 2003-01-17 |
Family
ID=19033034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001194988A Pending JP2003015654A (en) | 2001-06-27 | 2001-06-27 | Gap packing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003015654A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007253695A (en) * | 2006-03-22 | 2007-10-04 | Mitsubishi Fuso Truck & Bus Corp | Blocking member of foaming substance |
| US7819377B2 (en) | 2004-12-01 | 2010-10-26 | Nitto Denko Corporation | Foam filling member |
-
2001
- 2001-06-27 JP JP2001194988A patent/JP2003015654A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819377B2 (en) | 2004-12-01 | 2010-10-26 | Nitto Denko Corporation | Foam filling member |
| US8225569B2 (en) | 2004-12-01 | 2012-07-24 | Nitto Denko Corporation | Foam filling member |
| US8430375B2 (en) | 2004-12-01 | 2013-04-30 | Nitto Denko Corporation | Foam filling member |
| JP2007253695A (en) * | 2006-03-22 | 2007-10-04 | Mitsubishi Fuso Truck & Bus Corp | Blocking member of foaming substance |
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