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JP4467040B2 - Filling structure - Google Patents

Filling structure Download PDF

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Publication number
JP4467040B2
JP4467040B2 JP2003322053A JP2003322053A JP4467040B2 JP 4467040 B2 JP4467040 B2 JP 4467040B2 JP 2003322053 A JP2003322053 A JP 2003322053A JP 2003322053 A JP2003322053 A JP 2003322053A JP 4467040 B2 JP4467040 B2 JP 4467040B2
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Japan
Prior art keywords
adhesive
filler
hollow member
sheet
expanding
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Expired - Lifetime
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JP2003322053A
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Japanese (ja)
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JP2005088651A (en
Inventor
亮一 石川
光彦 植木
勝弘 柴田
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2003322053A priority Critical patent/JP4467040B2/en
Priority to US10/934,395 priority patent/US20050058787A1/en
Publication of JP2005088651A publication Critical patent/JP2005088651A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
    • B62D29/002—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material a foamable synthetic material or metal being added in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/08—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers using foamed adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
    • B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2463/00—Presence of epoxy resin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)
  • Vibration Dampers (AREA)

Description

本発明は、車体フレーム、特にバンパー、フロントサイドメンバーやピラーに好適な充填構造体に関するものである。   The present invention relates to a filling structure suitable for a body frame, particularly a bumper, a front side member, and a pillar.

近年、エネルギー吸収性能に優れた材料を車体構造材内部に充填し、その部位の衝突エネルギー吸収性能を向上させる試みが行われている（例えば、特許文献１、２参照。）。
特開平８−１６４８６９号公報 In recent years, attempts have been made to fill a vehicle body structural material with a material excellent in energy absorption performance and improve the collision energy absorption performance of the portion (see, for example, Patent Documents 1 and 2).
JP-A-8-164869

特許文献１は、同公報段落番号［００１５］に「図１の実施例では、溶融アルミニウム又は溶融アルミニウム合金に所定量の増粘材と発泡材を加え撹拌したものを、上記角パイプ材よりなるフレーム部５１内に入れて発泡させることにより、フレーム部５１とその内部に充填された発泡アルミニウム５２とからなる衝撃吸収用フレーム部材５を構成するものである。・・・以下略」と説明されている技術である。   Patent Document 1 states in paragraph [0015] of the same publication, “In the embodiment of FIG. 1, a predetermined amount of a thickening material and a foamed material added to molten aluminum or a molten aluminum alloy and stirred are made of the above-mentioned square pipe material. By placing and foaming in the frame part 51, the shock absorbing frame member 5 comprising the frame part 51 and the foamed aluminum 52 filled in the frame part 51 is constituted. Technology.

フレーム部５１と発泡アルミニウム５２との接合は、発泡アルミニウム５２の膨張力に依存する。しかし、発泡アルミニウム５２は多孔質体であるため、表面にも多数の孔が存在し、力が加わると表面が崩れ、接合力が低下し、長期間の使用の後には、フレーム部５１と発泡アルミニウム５２との間に隙間が発生する。   The joining of the frame part 51 and the foamed aluminum 52 depends on the expansion force of the foamed aluminum 52. However, since the foamed aluminum 52 is a porous body, there are a large number of pores on the surface, and when a force is applied, the surface collapses and the bonding strength is reduced. A gap is generated between the aluminum 52 and the aluminum 52.

すなわち、特許文献１の構造では、フレーム部材５１に対し発泡アルミニウム５２の機械的結合が望めない。
また、寒冷地では路面凍結対策として融雪塩を散布するが、このような環境、すなわち充填材と中空部材との間に融雪塩を含んだ水などが浸入する腐食環境では、特に鋼板製の中空部材に適切な防錆処理（化成処理や電着塗装）を施さないと鋼板部材に腐食が発生し内部からの腐食進行により穴明き錆へと進行する可能性がある。
さらにまた、無処理鋼板とアルミ製充填材の接触により異種金属接触腐食が発生し、アルミ製充填材に著しい機能劣化を起こす可能性がある。 That is, in the structure of Patent Document 1, mechanical bonding of the foamed aluminum 52 to the frame member 51 cannot be expected.
In cold regions, snow melting salt is sprayed as a countermeasure against road surface freezing. If an appropriate rust prevention treatment (chemical conversion treatment or electrodeposition coating) is not applied to the member, the steel plate member may be corroded and may progress to perforated rust due to the progress of corrosion from the inside.
Furthermore, the contact between the untreated steel plate and the aluminum filler may cause dissimilar metal contact corrosion, which may cause significant functional deterioration of the aluminum filler.

本発明は、中空部材に発泡アルミニウムなどの充填材を強固に結合することができ、かつ、耐食性を確保することが可能な技術を提供することを課題とする。   An object of the present invention is to provide a technique capable of firmly bonding a filler such as foamed aluminum to a hollow member and ensuring corrosion resistance.

請求項１に係る発明は、中空部材（１１）の内部に、衝撃エネルギーの吸収性能に富む発泡体からなる充填材（１２）を充填した充填構造体において、前記充填材（１２）に、加熱により膨張する性質を有するシート状接着剤（１７）を貼り付け、このシート状接着剤（１７）と前記中空部材（１１）の内面との間に隙間（１８）が存在するようにして、前記充填材（１２）を前記中空部材（１１）に挿入し、電着塗装後の乾燥熱により前記シート状接着剤（１７）に加熱処理を施すことにより、前記充填材（１３）が中空部材に固定されていることを特徴とする。
ここでいうシート状接着剤とは、接着性を有する高分子樹脂を指し、例えばエポキシ系接着剤、ウレタン系シール剤などが挙げられる。 The invention according to claim 1 is the filling structure in which the inside of the hollow member (11) is filled with a filler (12) made of a foam having a high impact energy absorption performance, and the filler (12) is heated. A sheet-like adhesive (17) having the property of expanding due to the above is pasted, and a gap (18) exists between the sheet-like adhesive (17) and the inner surface of the hollow member (11), By inserting the filler (12) into the hollow member (11) and subjecting the sheet-like adhesive (17) to heat treatment by the heat of drying after electrodeposition coating , the filler (13) becomes a hollow member. It is fixed.
Here, the sheet-like adhesive refers to an adhesive polymer resin, and examples thereof include an epoxy adhesive and a urethane sealant.

請求項２に係る発明では、シート状接着剤（１７）は、１４０℃〜１９０℃の温度で１０分〜３０分間加熱することで溶融し、且つ膨張し、その後の冷却により硬化する性質を有することを特徴とする。 In the invention according to claim 2, the sheet-like adhesive (17) has a property of melting and expanding by heating at a temperature of 140 ° C. to 190 ° C. for 10 minutes to 30 minutes, and curing by subsequent cooling. It is characterized by that.

接着剤の加熱と電着塗膜の乾燥とを同時並行して実施する場合、１４０℃未満若しくは１０分未満では塗膜の乾燥が不十分になる。１９０℃超では塗膜が変質するため好ましくない。また、乾燥に要する時間が３０分を超えると、生産性が低下する。   In the case where the heating of the adhesive and the drying of the electrodeposition coating film are carried out in parallel, the drying of the coating film becomes insufficient if it is less than 140 ° C. or less than 10 minutes. If it exceeds 190 ° C., the coating film changes in quality, which is not preferable. In addition, when the time required for drying exceeds 30 minutes, productivity decreases.

請求項３に係る発明では、シート状接着剤（１７）は、溶融し、膨張し、硬化する過程で、少なくとも１０％体積膨張する性質を有することを特徴とする。 The invention according to claim 3 is characterized in that the sheet-like adhesive (17) has a property of expanding at least 10% in volume in the process of melting, expanding and curing.

体積膨張率が１０％未満であると、中空部材に接着剤付き充填材を挿入する段階で、隙間が過少となり挿入が困難になり、作業性が低下する。そこで、体積膨張率を高めて適量の隙間を確保することが重要になる。   When the volume expansion coefficient is less than 10%, the gap becomes too small at the stage of inserting the filler with the adhesive into the hollow member, and the insertion becomes difficult and workability is lowered. Therefore, it is important to increase the volume expansion rate and secure an appropriate amount of gap.

請求項１に係る発明では、加熱により膨張するシート状接着剤を用いて中空部材に固定する。シート状接着剤は膨張する過程で充填材の表面に密着する。充填材の表面に多数の孔があってもシート状接着剤は充填材に良好に接合する。同様にシート状接着剤は膨張する過程で中空部材の内面に密着する。中空部材の内面に凹凸があってもシート状接着剤は中空部材に良好に接合する。この結果、中空部材に充填材を強固に固定することができる。
加えて、シート状接着剤を採用したので、接着剤の取り扱いが容易になり、必要な部位に必要な大きさの接着剤を、簡単に充填材に付設することができる。
また、シート状接着剤と中空部材の内面との間に隙間が存在するようにして、充填材を中空部材に挿入する。この状態で加熱処理を施す。
この加熱処理の前に防錆処理を施すとすれば、防錆処理液は隙間を通過するため、中空部材の外面及び内面に均等に防錆処理を施すことができる。
加えて、加熱は電着塗装後の乾燥熱で賄う。すなわち、電着塗装後の乾燥炉で塗料を乾燥させている過程で、接着剤を溶融し、膨張させ、硬化させることができる。この結果、別の加熱手段を設けることなく、既存の乾燥炉を利用することで、接着剤の処理が行えるという利点がある。 In the invention which concerns on Claim 1, it fixes to a hollow member using the sheet-like adhesive agent expanded by heating. The sheet-like adhesive adheres to the surface of the filler during the expansion process. Even if there are a large number of holes on the surface of the filler, the sheet-like adhesive bonds well to the filler. Similarly, the sheet-like adhesive closely adheres to the inner surface of the hollow member in the process of expanding. Even if the inner surface of the hollow member has irregularities, the sheet-like adhesive is favorably bonded to the hollow member. As a result, the filler can be firmly fixed to the hollow member.
In addition, since the sheet-like adhesive is employed, the handling of the adhesive becomes easy, and the adhesive having the required size can be easily attached to the filler at the required site.
Further, the filler is inserted into the hollow member so that there is a gap between the sheet-like adhesive and the inner surface of the hollow member. Heat treatment is performed in this state.
If the rust prevention treatment is performed before this heat treatment, the rust prevention treatment liquid passes through the gap, so that the rust prevention treatment can be equally applied to the outer surface and the inner surface of the hollow member.
In addition, heating is provided by drying heat after electrodeposition coating. That is, the adhesive can be melted, expanded and cured in the process of drying the paint in a drying furnace after electrodeposition coating. As a result, there is an advantage that the adhesive can be processed by using an existing drying furnace without providing another heating means.

請求項２に係る発明では、１４０℃〜１９０℃の温度で１０分〜３０分間加熱することで溶融し、且つ膨張し、その後の冷却により硬化する性質を有する接着剤を採用したので、電着塗装後の乾燥炉で塗料を乾燥させている過程で、接着剤を溶融し、膨張させ、硬化させることができる。この結果、別の加熱手段を設けることなく、既存の乾燥炉を利用することで、接着剤の処理が行えるという利点がある。   In the invention according to claim 2, since an adhesive having a property of melting and expanding by heating at a temperature of 140 ° C. to 190 ° C. for 10 to 30 minutes and curing by subsequent cooling is adopted, In the process of drying the paint in a drying furnace after painting, the adhesive can be melted, expanded, and cured. As a result, there is an advantage that the adhesive can be processed by using an existing drying furnace without providing another heating means.

請求項３に係る発明では、少なくとも１０％体積膨張する接着剤を採用したので、充填材に接着剤を付設し、この様な充填材を中空部材に挿入する場合に、中空部材と充填材との間に十分な大きさの隙間を確保できる。この結果、防錆処理中に中空部材と充填材との間に処理液が流入し易く、中空部材内面に確実に防錆処理膜を形成させ、中空部材内面の耐食性を確保することができる。   In the invention according to claim 3, since an adhesive that expands at least 10% in volume is employed, when the adhesive is attached to the filler and such filler is inserted into the hollow member, the hollow member and the filler A sufficiently large gap can be secured between the two. As a result, the treatment liquid can easily flow between the hollow member and the filler during the rust prevention treatment, and the rust prevention treatment film can be reliably formed on the inner surface of the hollow member, thereby ensuring the corrosion resistance of the inner surface of the hollow member.

本発明を実施するための最良の形態を添付図に基づいて以下に説明する。
図１は本発明に係る充填構造体の断面図であり、充填構造体１０は、内面に防錆処理層１１ａを施した中空部材１１の内部に衝撃エネルギーの吸収性能に富む充填材１２を挿入し、この充填材１２を、加熱により膨張させ、その後硬化させた接着層１３により、中空部材１１に固定してなる構造体である。 The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a filling structure according to the present invention. In the filling structure 10, a filler 12 rich in impact energy absorption performance is inserted into a hollow member 11 having an antirust treatment layer 11a on the inner surface. The filler 12 is a structure that is fixed to the hollow member 11 by an adhesive layer 13 that is expanded by heating and then cured.

中空部材１１は、金属インゴットを押し出して製造する押し出し材や、金属板をプレス機で塑性加工することで得るプレス品、又はその他の製造方法で得る筒状部材である。金属はアルミニウム合金、亜鉛合金、鉄系合金、その他の材料が採用できる。
充填材１２は、嵩密度が０．６ｇ／ｃｍ３程度の発泡アルミニウムが好適である。 The hollow member 11 is an extruded material produced by extruding a metal ingot, a pressed product obtained by plastic processing a metal plate with a press machine, or a cylindrical member obtained by another production method. As the metal, an aluminum alloy, a zinc alloy, an iron-based alloy, or other materials can be adopted.
The filler 12 is preferably foamed aluminum having a bulk density of about 0.6 g / cm 3 .

図２は図１の２部拡大図であり、充填材１２は嵩密度が０．６ｇ／ｃｍ３程度であるため、空孔１４・・・（・・・は複数個を示す。以下同じ）の割合が極めて大きい。そのため、表面に多数の窪み１５・・・が存在する。正常な防錆処理層１１ａを介してこれらの窪み１５・・・に接着層１３が進入し、接着層１３は充填材１２に強固に接合する。 2 is an enlarged view of part 2 of FIG. 1, and since the filler 12 has a bulk density of about 0.6 g / cm 3 , holes 14... The ratio of is very large. Therefore, there are a number of depressions 15 on the surface. The adhesive layer 13 enters these depressions 15... Via the normal rust preventive layer 11 a, and the adhesive layer 13 is firmly bonded to the filler 12.

また、中空部材１１は、押し出し材であれば平坦度が高いが、他の製造方法では、微細な凹部１６・・・が発生することがある。これらの凹部１６・・・に接着層１３が進入し、接着層１３は中空部材１１に密着する。
この結果、接着層１３の存在により、充填材１２を強固に中空部材１１に固定することができる。 Moreover, although the hollow member 11 has high flatness if it is an extruded material, in other manufacturing methods, fine concave portions 16 may be generated. The adhesive layer 13 enters these recesses 16... And the adhesive layer 13 is in close contact with the hollow member 11.
As a result, the filler 12 can be firmly fixed to the hollow member 11 due to the presence of the adhesive layer 13.

以上の構成からなる充填構造材の製造方法を次に説明する。
図３は本発明の充填構造材の製造フロー図である。
（ａ）において、中空部材１１を準備する。中空部材１１は、例えば１．７ｍｍ厚さのアルミニウム合金押し出し材（Ａ６０６３−Ｔ５）である。
（ｂ）において、充填材１２を準備する。
（ｃ）において、充填材１２にシート状接着剤１７・・・を貼り付ける。 Next, a method for manufacturing the filling structure material having the above configuration will be described.
FIG. 3 is a manufacturing flow diagram of the filling structure material of the present invention.
In (a), the hollow member 11 is prepared. The hollow member 11 is, for example, an aluminum alloy extruded material (A6063-T5) having a thickness of 1.7 mm.
In (b), the filler 12 is prepared.
In (c), the sheet-like adhesives 17 are attached to the filler 12.

シート状接着剤１７は、１４０℃〜１９０℃の温度で１０分〜３０分間加熱することで溶融し、且つ膨張し、その後の冷却により硬化する性質を有するもので、例えば３Ｍ社製ハイモデュラスメルトシールテープ♯５２３１（商品名）が採用できる。   The sheet-like adhesive 17 has a property of melting and expanding by heating at a temperature of 140 ° C. to 190 ° C. for 10 to 30 minutes, and curing by subsequent cooling. For example, a high modulus melt manufactured by 3M Seal tape # 5231 (trade name) can be used.

（ｄ）において、中空部材１１に、シート状接着剤１７・・・が付いた充填材１２を挿入する。挿入後の中空部材１１の断面図を次に示す。   In (d), the filler 12 with the sheet-like adhesive 17... Is inserted into the hollow member 11. A cross-sectional view of the hollow member 11 after insertion is shown below.

図４は充填材を挿入した後の中空部材の断面図であり、今まで説明しなかったが、シート状接着剤１７・・・と中空部材１１の内面との間に隙間１８が存在するように、中空部材１１及び充填材１２の断面寸法並びにシート状接着剤１７の厚さを決定した。
隙間１８が存在するため、中空部材１１に簡単にシート状接着剤１７付き充填材１２を挿入することができたと言える。 FIG. 4 is a cross-sectional view of the hollow member after the filler has been inserted. Although not described so far, there seems to be a gap 18 between the sheet-like adhesive 17... And the inner surface of the hollow member 11. In addition, the cross-sectional dimensions of the hollow member 11 and the filler 12 and the thickness of the sheet adhesive 17 were determined.
Since the gap 18 exists, it can be said that the filler 12 with the sheet adhesive 17 can be easily inserted into the hollow member 11.

なお、隙間１８を維持するために、仮止めボルト１９、１９で充填材１２を仮止めすることが望ましい。
図示しないが、この状態の中空部材１１等を防錆処理工程に装入し、防錆処理を施す。このときに防錆処理液は隙間１８を通過するため、中空部材１１の外面及び内面に均等に防錆処理を施すことができる。 In order to maintain the gap 18, it is desirable to temporarily fix the filler 12 with temporary fixing bolts 19 and 19.
Although not shown, the hollow member 11 and the like in this state are inserted into a rust prevention treatment step and subjected to a rust prevention treatment. At this time, since the rust preventive liquid passes through the gap 18, the outer surface and the inner surface of the hollow member 11 can be uniformly subjected to the rust preventive treatment.

必要であれば、次に塗装（電着塗装が下塗りであれば、中塗りや上塗り）を施す。
そして、乾燥炉に入れて、１４０℃〜１９０℃の温度で１０分〜３０分間加熱する。この加熱により塗膜が乾燥し硬化するとともに、シート状接着剤１７が、溶融し、且つ膨張し、その後の冷却により硬化する。この過程でシート状接着剤１７は１０％以上体積膨張し、隙間１８に充満する。 If necessary, the coating is applied next (if the electrodeposition coating is an undercoat, an intermediate coat or top coat).
And it puts into a drying furnace and heats for 10 to 30 minutes at the temperature of 140 to 190 degreeC. The coating film is dried and cured by this heating, and the sheet-like adhesive 17 is melted and expanded, and is cured by subsequent cooling. In this process, the sheet-like adhesive 17 expands by 10% or more and fills the gap 18.

冷却後、仮止めボルト１９、１９を外すことで、図１の充填構造体１０を得ることができる。   After cooling, by removing the temporary fixing bolts 19, 19, the filling structure 10 of FIG. 1 can be obtained.

尚、本発明の充填構造体は、車両のバンパー、フロントサイドビーム、ピラーなど車体フレームに好適であるが、用途を格別限定するものではない。   The filling structure of the present invention is suitable for a vehicle body frame such as a bumper, a front side beam, and a pillar of a vehicle, but the application is not particularly limited.

また、請求項１では、接着剤の種類（溶融温度、膨張率、液体／シート）は任意に設定することができる。
請求項２では、接着剤は液状／固体状、固体である場合にシート状／粉末状の何れでも良い。 In claim 1, the type of adhesive (melting temperature, expansion coefficient, liquid / sheet) can be arbitrarily set.
In the second aspect, the adhesive may be liquid / solid, or in the case of solid, sheet / powder.

本発明の充填構造体は、車両の車体フレームに好適である。   The filling structure of the present invention is suitable for a vehicle body frame.

本発明に係る充填構造体の断面図である。It is sectional drawing of the filling structure which concerns on this invention. 図１の２部拡大図である。FIG. 2 is an enlarged view of part 2 of FIG. 1. 本発明の充填構造材の製造フロー図である。It is a manufacturing flow figure of the filling structure material of this invention. 本発明に係る充填材を挿入した後の中空部材の断面図である。It is sectional drawing of the hollow member after inserting the filler which concerns on this invention.

符号の説明Explanation of symbols

１０…充填構造体、１１…中空部材、１２…充填材、１３…接着層、１７…テープ状接着剤、１８…隙間。   DESCRIPTION OF SYMBOLS 10 ... Filling structure, 11 ... Hollow member, 12 ... Filler, 13 ... Adhesive layer, 17 ... Tape-like adhesive, 18 ... Gap.

Claims (3)

中空部材（１１）の内部に、衝撃エネルギーの吸収性能に富む発泡体からなる充填材（１２）を充填した充填構造体において、前記充填材（１２）に、加熱により膨張する性質を有するシート状接着剤（１７）を貼り付け、このシート状接着剤（１７）と前記中空部材（１１）の内面との間に隙間（１８）が存在するようにして、前記充填材（１２）を前記中空部材（１１）に挿入し、電着塗装後の乾燥熱により前記シート状接着剤（１７）に加熱処理を施すことにより、前記充填材（１３）が中空部材に固定されていることを特徴とする充填構造体。 In the filling structure in which the inside of the hollow member (11) is filled with a filler (12) made of a foam having a high impact energy absorption performance, the filler (12) has a property of expanding by heating. Adhesive (17) is applied, and a gap (18) exists between the sheet-like adhesive (17) and the inner surface of the hollow member (11) so that the filler (12) is hollow. The filler (13) is fixed to the hollow member by inserting it into the member (11) and subjecting the sheet-like adhesive (17) to heat treatment by drying heat after electrodeposition coating. To fill structure. 前記シート状接着剤（１７）は、１４０℃〜１９０℃の温度で１０分〜３０分間加熱することで溶融し、且つ膨張し、その後の冷却により硬化する性質を有することを特徴とする請求項１記載の充填構造体。   The sheet-like adhesive (17) has a property of melting and expanding by heating at a temperature of 140 ° C to 190 ° C for 10 to 30 minutes, and curing by subsequent cooling. The filled structure according to claim 1. 前記シート状接着剤（１７）は、溶融し、膨張し、硬化する過程で、少なくとも１０％体積膨張する性質を有することを特徴とする請求項２記載の充填構造体。   The filling structure according to claim 2, wherein the sheet-like adhesive (17) has a property of expanding at least 10% by volume in the process of melting, expanding and curing.
JP2003322053A 2003-09-12 2003-09-12 Filling structure Expired - Lifetime JP4467040B2 (en)

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