WO1998043868A1 - Method of reinforcing car body - Google Patents

Method of reinforcing car body Download PDF

Info

Publication number
WO1998043868A1
WO1998043868A1 PCT/JP1998/001478 JP9801478W WO9843868A1 WO 1998043868 A1 WO1998043868 A1 WO 1998043868A1 JP 9801478 W JP9801478 W JP 9801478W WO 9843868 A1 WO9843868 A1 WO 9843868A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcing material
reinforcing
closed cross
vehicle body
foamable
Prior art date
Application number
PCT/JP1998/001478
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuhiko Fujii
Hirohide Tomoyasu
Akihiro Kaizouji
Original Assignee
Sunstar Giken Kabushiki Kaisha
Uni-Sunstar B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sunstar Giken Kabushiki Kaisha, Uni-Sunstar B.V. filed Critical Sunstar Giken Kabushiki Kaisha
Publication of WO1998043868A1 publication Critical patent/WO1998043868A1/en

Links

Classifications

    • 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
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/09—Means for mounting load bearing surfaces

Definitions

  • the present invention relates to a method for reinforcing a vehicle body, and more specifically, in a production line of a vehicle, for example, an automobile, filling a foamed and hardened reinforcing material into a closed cross-section portion of a vehicle body or the like having a closed cross-sectional structure,
  • This is a method of reinforcing body structural members, in particular, using a solid rod-shaped thermosetting type as a foamable reinforcing material that forms the above-mentioned filled foam hardening material, and attaching it to a specific location and under certain conditions
  • the present invention relates to a method of foaming and hardening in a coating baking step after an electrodeposition coating step.
  • Such a method of reinforcing a vehicle body structural member with a filled foam hardening reinforcing material is generally performed in a vehicle production line during a vehicle body assembly process ⁇ an electrodeposition coating process-a paint baking process.
  • a solid sheet-like thermosetting foamable reinforcing material is provided on one of a pair of opposing surfaces 12 forming a closed cross section of the vehicle body villa 11. 13 is applied via its self-adhesive or a separately provided adhesive layer (not shown), and then subjected to an electrodeposition coating process (immersion in an electrodeposition liquid) to obtain an uncured electrodeposition film.
  • foaming is performed to form a foamed hardening reinforcing material 15 at the same time as the electrodeposition hardened film 14 '.
  • one or a plurality of partition plates 16 are provided at appropriate intervals along the longitudinal direction of the closed cross section of the vehicle body pillar 11, and the purpose of the partition plate 16 is to This is to completely fill the formed foam hardening reinforcing material 15 by sagging prevention.
  • thermosetting foamable reinforcing material in the form of a solid sheet has the following problems.
  • thermosetting foamable reinforcing material depends on the degree of adhesion during the transfer (conveyance) to the electrodeposition coating process after application and during the electrodeposition coating process (immersion in the electrodeposition liquid). For example, if the adhesive strength is low, it will easily fall off or the sticking position will shift.On the other hand, if the adhesive strength is too high for stable holding, it will adhere to workers and the workability will decrease. I do. In this way, in the solid sheet-like bonding method, the reliability of the bonding and fixing is extremely low. In addition, since such adhesive strength easily fluctuates due to seasonal temperature differences, there is a difficulty in adjusting and managing the adhesive strength. ii) Although it is not completely unrelated to the adhesive strength of (i) above, it is impossible or at least quite difficult to adhere to a surface other than at least a smooth surface.
  • thermosetting foamable reinforcing material flows down due to the reduction in viscosity, and as shown in FIG. 3, a thin layer portion (15 A) is formed.
  • the strength decrease it also has a significant adverse effect on protection.
  • thermosetting foamable reinforcing material a solid rod-shaped thermosetting type was used, Through a convex part such as a stud bolt If installed under the conditions, unlike the conventional method, the foamable reinforcing material can be fixed mechanically and surely, the fixing reliability is extremely high, and there is no formation of a thin layer portion, and the specified They have found that the space in the closed section can be completely filled, and have completed the present invention.
  • the present invention provides a method for reinforcing a vehicle body by filling a foamed and hardened reinforcing material in a closed cross-section portion of a vehicle body having a closed cross-section structure in a vehicle production line,
  • At least one partition plate provided at an appropriate interval in the closed cross section has a convex portion
  • thermosetting foamable reinforcing material is foamed and cured.
  • FIG. 1A is a perspective view of an element having a conical structure used as a convex portion in the method of the present invention.
  • FIG. 1B is a perspective view of an element having a thread cone used as a convex portion in the method of the present invention and a nut screwed thereto.
  • FIG. 1C is a perspective view of a stud bolt as a convex portion in the method of the present invention.
  • FIG. 2 is a simplified sectional view showing a specific embodiment of the method of the present invention.
  • FIG. 3 is a simplified cross-sectional view showing a conventional method.
  • the solid rod-shaped thermosetting foamable reinforcing material used in the present invention may be any type or composition as long as it is a thermosetting type and presents a solid at room temperature.
  • Preferred foamable reinforcements include: Polyurethane-based, polyvinyl chloride-based, polyethylene-based, synthetic rubber-based, phenolic resin-based, styrene resin-based, ABS resin-based, epoxy resin-based, and polyolefin resin-based foamable reinforcing materials are available.
  • epoxy resin-based foamable reinforcing materials are particularly preferable.
  • such an epoxy resin foamable reinforcing material will be described in detail.
  • Epoxy resin foamable reinforcing materials generally include various epoxy resins (eg, glycidyl ether type, glycidyl ester type, glycidylamine type, linear aliphatic epoxy resin type, alicyclic epoxy resin epoxy resin, etc.). ), Caro heat-activated curing agent (a curing agent that generally shows activity in the temperature range of 80 to 200 ° C.
  • azo compounds such as azodicarbonamide and azobisisobutyronitrile
  • suitable fillers for example, calcium carbonate, talc, asbestos, cay acids, carbon black, etc.
  • suitable fillers for example, calcium carbonate, talc, asbestos, cay acids, carbon black, etc.
  • reactive diluents for epoxy resins butyl glycidyl ether, monoglycidyl ether of long-chain alcohols, etc.
  • Thermoplastic polymers acrylic resin, vinyl acetate resin, polyolefin polymer, polyester polymer, etc.
  • plasticizers phthalic acid such as octyl phthalate; phosphoric acid such as tricresyl phosphate)
  • Inert diluent such as pine oil
  • foaming aid It consists composition containing a foaming agent, through A viscous solid at room temperature with the following composition
  • a typical example of the element forming the convex portion used in the present invention is a stud bolt or the like, which is directly or indirectly connected to a partition plate provided in a structural member such as a vehicle body villa described above. There is no limitation on the shape and material as long as it can be installed and its convex portion can insert and hold the solid rod-shaped thermosetting foamable reinforcing material. An element having a shape as shown in FIGS. 1B and 1C is used.
  • Figure 1 A A cone-shaped element similar to a candle holder.
  • the bottom of the foamable reinforcing material can be pierced, and no special work is required on the foamable reinforcing material side.
  • Fig. 1B Screws are provided on the convex part (left side). In this case, the nut shown on the right, which is screwed into the thread, is embedded in the bottom surface of the foamable reinforcing material.
  • Fig. 1C Stud bolt with the shape shown on the left.
  • the concave clip shown on the right which fits into the convex part, is embedded in the bottom of the foam reinforcing material.
  • such a convex portion may be fixed to the partition plate by arc welding.
  • the vehicle body is a vehicle body, and the vehicle is an automobile, a train, or the like. Means all vehicles.
  • stud bolts 7 (schematically shown for simplicity) are installed on a partition plate 6 provided in a model 1 of a structural member having a closed cross section of a vehicle body by the above-described method.
  • a predetermined foaming reinforcing material 3 is inserted into the stud bolt 7, and in this case, the foaming reinforcing material 3 is held such that a gap remains between the bottom surface of the foaming reinforcing material 3 and the surface of the partition plate 6. I do. With this gap, a sufficient gap is secured over the entire surface of the partition plate 6 in contact with the electrodeposition liquid in the next electrodeposition coating step.
  • the structural member is subjected to the next electrodeposition coating step to form an uncured electrodeposition film 4 (only part of which is shown), and then, the coating member is heated and foamed (foamed and cured) in the coating baking step.
  • a desired foam-hardened reinforcing material 5 can be formed over the entire space of the predetermined closed section.
  • the size of the foamable reinforcing material 3 to be used may be set according to the capacity of the foam hardening reinforcing material to be filled, the heat expansion ratio, the space capacity and the shape of the closed cross section, and the like. For example, design a foaming ratio of about 3 times.
  • the foamable reinforcing material has the following composition.
  • Epoxy resin (Epicoat 1001 manufactured by Yuka Shell Co., Ltd.) 4 5 Latent curing agent (dicyandiamide) 5 Blowing agent (azodicarbonamide) 3- Filler (carbon black) 4 2 Others (Thermoplastic polymers, etc.) 5
  • Epoxy resin Epicoat 1001 manufactured by Yuka Shell Co., Ltd.
  • Latent curing agent dicyandiamide
  • Blowing agent azodicarbonamide
  • 3- Filler carbon black
  • Others Thermoplastic polymers, etc.
  • This composition is stirred and mixed at 70 ° C., and then cooled and molded while extruding the mixture to obtain a 4 ⁇ 4 ⁇ 15 cm solid rod-shaped foamable reinforcing material.
  • a concave clip (resin molded product) shown in Fig. 1C (right side) is embedded in a predetermined location (bottom) of the reinforcing material.
  • the stud bolt pop rivet fastener company
  • Fig. 1C left
  • the partition plate 6 of a model box (5 x 5 x 3 O cm) of a structural member with a closed section as shown in Fig. 2.
  • the foamable reinforcing material described above is inserted into the stud bolt with a one-touch through the fitting with the concave clip.
  • the inside of the box is heated at 170 ° C for 20 minutes to form a foam-hardened reinforcing material (foaming ratio set to 3 times).
  • the foaming reinforcing material can be easily and securely installed on the partition plate provided on the structural member having the closed cross section of the vehicle body, the foaming reinforcing material can be easily transferred during the movement (transportation) to the electrodeposition coating process. Or, it is possible to prevent the foamable reinforcing material from dropping or slipping from the installation location due to the water pressure at the time of immersing the electrodeposition liquid in the electrodeposition coating process, and to form the electrodeposition cured film everywhere in the space of the closed-section structural member. Can be achieved. In addition, the predetermined space can be completely filled without the problem of run-off during the baking coating process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Abstract

A method of reinforcing a car body on a vehicle production line by filling a foamed and hardened reinforcement into a closed cross-sectional area in the car body with a closed cross-sectional structure, comprising providing a raised portion on at least one of partition plates installed at appropriate intervals in the closed cross-sectional section; attaching a solid bar-shaped thermosetting expandable reinforcement to the raised portion; performing electrodeposition coating thereon; and foaming and hardening the reinforcement in a baking step.

Description

明 細 書  Specification
車体の補強方法  How to reinforce the body
技術分野  Technical field
本発明は、 車体の補強方法に関し、 更に詳しくは、 車両、 たとえば自動 車の生産ラインにおいて、 閉断面構造を有する車体ビラ一等の閉断面部分 内に発泡硬化した補強材を充填して、 該車体構造部材を補強する方法であ つて、 特に上記の充填発泡硬化捕強材を形成する発泡性補強材として、 固 型棒状の熱硬化タイプを用い、これを特定箇所にかつ一定条件下に取付け、 電着塗装工程後の塗装焼付け工程で発泡硬化させる方法に関する。  The present invention relates to a method for reinforcing a vehicle body, and more specifically, in a production line of a vehicle, for example, an automobile, filling a foamed and hardened reinforcing material into a closed cross-section portion of a vehicle body or the like having a closed cross-sectional structure, This is a method of reinforcing body structural members, in particular, using a solid rod-shaped thermosetting type as a foamable reinforcing material that forms the above-mentioned filled foam hardening material, and attaching it to a specific location and under certain conditions The present invention relates to a method of foaming and hardening in a coating baking step after an electrodeposition coating step.
背景技術  Background art
近年、 自動車業界では、 車の安全強化と防音 ·制振のため、 車体全体の 強度と剛性を確保することが強く求められている。 その中で、 車体のねじ れ等の微小変形で応力の集中する接合部位、 および衝擊などの多くの負荷 が加わる部分、 たとえぱシートベルト装置のベルトアンカーが装着され、 閉断面構造を有するセンタピラーや、 フロン トピラーおよび底部のロッカ 一部ビラ一等の車体の閉断面構造を有する車体構造部材の剛性強度の付与 が望まれ、 近時では、 車体重量の軽量化と合せて、 該車体構造部材の閉断 面部分内に発泡硬化した補強材を充填する工夫がなされつつある。  In recent years, the automobile industry has been strongly required to ensure the strength and rigidity of the entire vehicle body in order to enhance vehicle safety and sound and vibration control. Among them, the joints where stress concentrates due to minute deformation such as torsion of the vehicle body, and the parts to which many loads such as impacts are applied, such as the center pillar, which has a closed cross-sectional structure where the belt anchor of the seat belt device is attached In addition, it is desired to provide rigidity of a vehicle body structural member having a closed cross-sectional structure of a vehicle body such as a front pillar and a rocker at a bottom part of the vehicle body. Some measures are being taken to fill the foamed and hardened reinforcing material into the closed section of the steel.
このよ うな車体構造部材への充填発泡硬化補強材による補強方法は一般 に、 自動車生産ラインにおける、 車体組立工程→電着塗装工程—塗装焼付 け工程の中で行われる。 たとえば図 3で示されるように、 先ず、 車体組立 工程に際し、 車体ビラ一 1 1の閉断面部分を形成する一対の対向表面の一 方 1 2に、 固型シート状の熱硬化発泡性補強材 1 3を、 その自己粘着性あ るいは別途設けた粘着層（図示せず）を介して、 貼着した後、 電着塗装工程 (電着液浸漬）に供して未硬化の電着膜 1 4 (一部のみ図示）を形成し、 次い で塗装焼付け工程で加熱発泡 (発泡硬化）を行って、 電着硬化膜 1 4 'と同時 に充填発泡硬化補強材 1 5を形成するようになっている。 なお、 この場合、 車体ピラー 1 1の閉断面部分には、 その長手方向に沿って適当間隔で 1個 または複数個の仕切板 1 6が設けられており、かかる仕切板 1 6の目的は、 形成される発泡硬化補強材 1 5のタレ止めによる完全充填を行なうことで ある。 Such a method of reinforcing a vehicle body structural member with a filled foam hardening reinforcing material is generally performed in a vehicle production line during a vehicle body assembly process → an electrodeposition coating process-a paint baking process. For example, as shown in FIG. 3, first, in the vehicle body assembling process, a solid sheet-like thermosetting foamable reinforcing material is provided on one of a pair of opposing surfaces 12 forming a closed cross section of the vehicle body villa 11. 13 is applied via its self-adhesive or a separately provided adhesive layer (not shown), and then subjected to an electrodeposition coating process (immersion in an electrodeposition liquid) to obtain an uncured electrodeposition film. 4 (only a part is shown) In the paint baking process, foaming (foam hardening) is performed to form a foamed hardening reinforcing material 15 at the same time as the electrodeposition hardened film 14 '. In this case, one or a plurality of partition plates 16 are provided at appropriate intervals along the longitudinal direction of the closed cross section of the vehicle body pillar 11, and the purpose of the partition plate 16 is to This is to completely fill the formed foam hardening reinforcing material 15 by sagging prevention.
しかしながら、 この固型シート状の熱硬化発泡性補強材を用いる従来法 では、 以下に示すような問題点がある。  However, the conventional method using the thermosetting foamable reinforcing material in the form of a solid sheet has the following problems.
i)上記熱硬化発泡性補強材は、 その貼着後電着塗装工程への移動 (搬送） 中あるいは電着塗装工程 (電着液への浸漬）中に、 その粘着力の程度によつ ては、 たとえば、 粘着力が低いと、 簡単に脱落したりあるいは貼着位置が ずれたり し、 逆に安定保持のため粘着力をあまりに高めると、 作業者への 付着が起こり、 作業性が低下する。 このよ うに固型シート状の貼着方法で は、 該貼着固定の信頼性が極めて低い。 また、 かかる粘着力は、 季節によ る気温差によっても容易に変動するため、 その調整 '管理に難点がある。 ii)上記（i)の粘着力とは全く無関係とは云えないが、 少なく とも平滑面 以外の面への貼着は不可能乃至少なく ともかなり困難である。  i) The above-mentioned thermosetting foamable reinforcing material depends on the degree of adhesion during the transfer (conveyance) to the electrodeposition coating process after application and during the electrodeposition coating process (immersion in the electrodeposition liquid). For example, if the adhesive strength is low, it will easily fall off or the sticking position will shift.On the other hand, if the adhesive strength is too high for stable holding, it will adhere to workers and the workability will decrease. I do. In this way, in the solid sheet-like bonding method, the reliability of the bonding and fixing is extremely low. In addition, since such adhesive strength easily fluctuates due to seasonal temperature differences, there is a difficulty in adjusting and managing the adhesive strength. ii) Although it is not completely unrelated to the adhesive strength of (i) above, it is impossible or at least quite difficult to adhere to a surface other than at least a smooth surface.
iii)焼付け塗装工程の加熱発泡時に、 該熱硬化発泡性補強材の低粘度化 による流れ落ちが起って、 図 3に示すように、 薄層部（1 5 A )が形成され、 このことは、 強度低下を招くだけではなく、 防鲭性にも多大の悪影響を与 える。  iii) At the time of heating and foaming in the baking coating step, the thermosetting foamable reinforcing material flows down due to the reduction in viscosity, and as shown in FIG. 3, a thin layer portion (15 A) is formed. However, not only does the strength decrease, it also has a significant adverse effect on protection.
発明の開示  Disclosure of the invention
本発明者らは、 かかる従来法の問題点を解決するため鋭意検討を進めた ところ、上記熱硬化発泡性補強材と して、 固型棒状の熱硬化タイプを用い、 これを上述の仕切板へ、 スタッ ドボルトのような凸状部を介してかつ一定 条件下に取付ければ、 従来法とは異なり、 機械的にかつ確実に発泡性補強 材を固定することができ、 その固定信頼性は極めて高く、 かつ薄層部の形 成もなく、 所定の閉断面部分の空間を完全に充填しうることを見出し、 本 発明を完成させるに至った。 The present inventors have conducted intensive studies in order to solve the problems of the conventional method. As the thermosetting foamable reinforcing material, a solid rod-shaped thermosetting type was used, Through a convex part such as a stud bolt If installed under the conditions, unlike the conventional method, the foamable reinforcing material can be fixed mechanically and surely, the fixing reliability is extremely high, and there is no formation of a thin layer portion, and the specified They have found that the space in the closed section can be completely filled, and have completed the present invention.
すなわち、 本発明は、 車両生産ラインにおいて、 閉断面構造を有する車 体の閉断面部分内に発泡硬化した補強材を充填して、 該車体を補強する方 法であって、  That is, the present invention provides a method for reinforcing a vehicle body by filling a foamed and hardened reinforcing material in a closed cross-section portion of a vehicle body having a closed cross-section structure in a vehicle production line,
上記閉断面部分内に適当間隔で設けられた少なく とも 1個の仕切板に、 凸状部を設置し、  At least one partition plate provided at an appropriate interval in the closed cross section has a convex portion,
該凸状部に、 固型棒状の熱硬化発泡性捕強材を保持させ、  Holding the solid rod-shaped thermosetting foaming material in the convex portion;
次いで、 電着塗装工程後、 塗装焼付け工程において、 熱硬化発泡性補強 材を発泡硬化させる  Next, after the electrodeposition coating process, in the coating baking process, the thermosetting foamable reinforcing material is foamed and cured.
ことを含んでなる車体の補強方法を提供するものである。 And a method for reinforcing a vehicle body.
図面の簡単な説明  BRIEF DESCRIPTION OF THE FIGURES
図 1 Aは、 本発明方法で凸状部として用いる錐構造を有する要素の斜視 図である。  FIG. 1A is a perspective view of an element having a conical structure used as a convex portion in the method of the present invention.
図 1 Bは、 本発明方法で凸状部として用いるネジ山錐を有する要素と、 それに螺合するナツ トの斜視図である。  FIG. 1B is a perspective view of an element having a thread cone used as a convex portion in the method of the present invention and a nut screwed thereto.
図 1 Cは、 本発明方法で凸状部としてスタッ ドボルトの斜視図である。 図 2は、 本発明方法の具体的態様を示す簡略断面図である。  FIG. 1C is a perspective view of a stud bolt as a convex portion in the method of the present invention. FIG. 2 is a simplified sectional view showing a specific embodiment of the method of the present invention.
図 3は、 従来方法を示す簡略断面図である。  FIG. 3 is a simplified cross-sectional view showing a conventional method.
発明の詳細な説明  Detailed description of the invention
本発明で用いる固型棒状の熱硬化発泡性補強材（以下、 単に発泡性補強 材ということもある）と しては、 熱硬化タイプで常温固体を呈するもので あれば、 その種類や組成に制限はない。 好ましい発泡性補強材と しては、 ポリ ウレタン系、 ポリ塩化ビニル系、 ポリエチレン系、 合成ゴム系、 フエ ノール樹脂系、 スチロール榭脂系、 A B S樹脂系、 エポキシ榭脂系、 ポリ ォレフィ ン樹脂系発泡性補強材が举げられる。 その中でも、 特にエポキシ 榭脂系発泡性補強材が好適である。 以下、 かかるエポキシ樹脂系発泡性補 強材について詳述する。 The solid rod-shaped thermosetting foamable reinforcing material used in the present invention (hereinafter, also referred to simply as a foamable reinforcing material) may be any type or composition as long as it is a thermosetting type and presents a solid at room temperature. No restrictions. Preferred foamable reinforcements include: Polyurethane-based, polyvinyl chloride-based, polyethylene-based, synthetic rubber-based, phenolic resin-based, styrene resin-based, ABS resin-based, epoxy resin-based, and polyolefin resin-based foamable reinforcing materials are available. Among them, epoxy resin-based foamable reinforcing materials are particularly preferable. Hereinafter, such an epoxy resin foamable reinforcing material will be described in detail.
エポキシ榭脂系発泡性補強材は一般に、 各種のエポキシ榭脂（たとえば グリ シジルエーテル型、 グリ シジルエステル型、 グリ シジルァミン型、 線 状脂肪族ェポキサイ ド型、 脂環族ェポキサイ ド型エポキシ榭脂など）、 カロ 熱活性硬化剤（一般に 8 0〜2 0 0 °Cの温度範囲で活性を示す硬化剤。 た とえばジシアンジアミ ド、 4 , 4 'ージアミノジフエニルスルホン、 2 —n —ヘプタデシルイミダゾールなどのィミダゾ一ル誘導体;ィソフタル酸ジ ヒ ドラジド； N，N—ジアルキル尿素誘導体； Ν , Ν—ジアルキルチオ尿素誘 導体等）および発泡剤（一般に常温で他成分と混合しても安定で、 かつ加熱 により分解してガスを発生する物質。 たとえばァゾジカルボンアミ ド、 ァ ゾビスィ ソブチロニ ト リルなどのァゾ化合物；ジニ トロソペンタメチレン テトラミンなどの二ト口ソ化合物; ρ— トルエンスルホニルヒ ドラジド、 4， 4 '—ォキシベンゼンスルホニルヒ ドラジドなどのスルホヒ ドラジド化合 物、 および加熱発泡性の未膨張バル一ン等）から成り、 さらに適当な充填 剤（たとえば炭酸カルシウム、 タルク、 アスベス ト、 ケィ酸類、 カーボン ブラックなど）および必要に応じてエポキシ樹脂用反応性希釈剤（ブチルグ リシジルエーテル、 長鎖アルコールのモノグリシジルエーテルなど）、 熱 可塑性ポリマー（アク リル系榭脂、 酢酸ビニル系樹脂、 ポリオレフイン系 ポリマー、 ポリエステル系ポリマー等）、 可塑剤（ジォクチルフタレートな どのフタル酸系；トリクレジルホスフエ一トなどのリン酸系）、 不活性希釈 剤（パインオイルなど）、 発泡助剤、 整泡剤を配合した組成物からなり、 通 常、 下記組成によって常温粘稠固体を呈する Epoxy resin foamable reinforcing materials generally include various epoxy resins (eg, glycidyl ether type, glycidyl ester type, glycidylamine type, linear aliphatic epoxy resin type, alicyclic epoxy resin epoxy resin, etc.). ), Caro heat-activated curing agent (a curing agent that generally shows activity in the temperature range of 80 to 200 ° C. For example, dicyandiamide, 4,4 'diaminodiphenylsulfone, 2-n-heptadecylimidazole) Imidazole derivatives; isophthalic dihydrazide; N, N-dialkyl urea derivatives; Ν, Ν-dialkyl thiourea derivatives; and foaming agents (generally stable even when mixed with other components at room temperature, and Substances that decompose on heating to generate gas, for example, azo compounds such as azodicarbonamide and azobisisobutyronitrile; Two-storage compounds such as tamethylene tetramine; ρ-toluenesulfonylhydrazide, sulfohydrazide compounds such as 4,4'-oxybenzenesulfonylhydrazide, and heat-expandable unexpanded balun). In addition, suitable fillers (for example, calcium carbonate, talc, asbestos, cay acids, carbon black, etc.) and, if necessary, reactive diluents for epoxy resins (butyl glycidyl ether, monoglycidyl ether of long-chain alcohols, etc.), Thermoplastic polymers (acrylic resin, vinyl acetate resin, polyolefin polymer, polyester polymer, etc.), plasticizers (phthalic acid such as octyl phthalate; phosphoric acid such as tricresyl phosphate) ), Inert diluent (such as pine oil), foaming aid, It consists composition containing a foaming agent, through A viscous solid at room temperature with the following composition
成分 重量部  Ingredients by weight
エポキシ樹脂 0 0  Epoxy resin 0 0
加熱活性硬化剤 0 .：!〜 2 0 発泡剤 0 .：！〜 2 0 充填剤 5 0〜 3 0 0 その他（熱可塑性ポリマー等） 0 .：！〜 1 0 0 本発明で用いる凸状部を形成する要素の代表例は、 スタツ ドボルトなど であり、 上述の車体ビラ一等の構造部材内に設けられた仕切板へ直接もし くは間接的に設置でき、 かつその凸状部が上記固型棒状の熱硬化発泡性補 強材を差込んで保持しうるものであれば、 形状および材質に何ら制限はな いが、 たとえば、 図 1 A、 図 1 Bおよび図 1 Cに示したような形状を有す る要素が用いられる。  Heat activated curing agent 0:! ~ 20 Blowing agent 0 ::! ~ 20 Filler 50 ~ 300 Other (thermoplastic polymer, etc.) 0. A typical example of the element forming the convex portion used in the present invention is a stud bolt or the like, which is directly or indirectly connected to a partition plate provided in a structural member such as a vehicle body villa described above. There is no limitation on the shape and material as long as it can be installed and its convex portion can insert and hold the solid rod-shaped thermosetting foamable reinforcing material. An element having a shape as shown in FIGS. 1B and 1C is used.
図 1 A : ロウソク立てに類する錐構造の要素。 この場合、 発泡性補強 材の底面に突刺すことができ、 発泡性補強材側に特別の細工は不要であ る。  Figure 1 A: A cone-shaped element similar to a candle holder. In this case, the bottom of the foamable reinforcing material can be pierced, and no special work is required on the foamable reinforcing material side.
図 1 B ： 凸状部にネジ山を設けたもの（左側)。 この場合、 ネジ山に螺合 する、 右側に示すナツ トを発泡性補強材の底面に埋め込んでおく。  Fig. 1B: Screws are provided on the convex part (left side). In this case, the nut shown on the right, which is screwed into the thread, is embedded in the bottom surface of the foamable reinforcing material.
図 1 C ： 左側に示す形状のスタッ ドボルト。 この場合、 その凸状部に 嵌合する、 右側に示す凹型ク リ ップを発泡性補強材の底面に埋め込んでお  Fig. 1C: Stud bolt with the shape shown on the left. In this case, the concave clip shown on the right, which fits into the convex part, is embedded in the bottom of the foam reinforcing material.
< ° <°
なお、 かかる凸状部は、 通常、 アーク溶接により仕切板へ固定すればよ  In addition, usually, such a convex portion may be fixed to the partition plate by arc welding.
以下、 図 2を参照して本発明に係る車体の補強方法を詳述する。 なお、 本発明において、 車体は、 車両の車体であり、 車両とは、 自動車、 電車等 の車両すベてを意味する。 Hereinafter, the method for reinforcing a vehicle body according to the present invention will be described in detail with reference to FIG. In the present invention, the vehicle body is a vehicle body, and the vehicle is an automobile, a train, or the like. Means all vehicles.
先ず、 車体の閉断面部分を有する構造部材の模型 1内に設けられている 仕切板 6にスタッ ドボルト 7 (簡略化のため模式的に図示）を上述の方法で 設置しておく。  First, stud bolts 7 (schematically shown for simplicity) are installed on a partition plate 6 provided in a model 1 of a structural member having a closed cross section of a vehicle body by the above-described method.
次に、該スタッ ドボルト 7に所定の発泡性補強材 3を差込み、 この場合、 発泡性補強材 3の底面が仕切板 6の表面との間に空隙が残るように発泡性 補強材 3を保持する。 この空隙により、 次の電着塗装工程で仕切板 6の 全面にわたり電着液と接触するのに十分な隙間を確保する。  Next, a predetermined foaming reinforcing material 3 is inserted into the stud bolt 7, and in this case, the foaming reinforcing material 3 is held such that a gap remains between the bottom surface of the foaming reinforcing material 3 and the surface of the partition plate 6. I do. With this gap, a sufficient gap is secured over the entire surface of the partition plate 6 in contact with the electrodeposition liquid in the next electrodeposition coating step.
この状態で構造部材を次の電着塗装工程に供して未硬化の電着膜 4 (一 部のみ図示）を形成し、 次いで塗装焼付け工程で捕強部材の加熱発泡 (発泡 硬化）を行って、 電着硬化膜 4 'の形成と同時に、 所定の閉断面部分の空間 のすみずみに及ぶ所望の発泡硬化補強材 5を形成することができる。  In this state, the structural member is subjected to the next electrodeposition coating step to form an uncured electrodeposition film 4 (only part of which is shown), and then, the coating member is heated and foamed (foamed and cured) in the coating baking step. At the same time as the formation of the electrodeposition cured film 4 ′, a desired foam-hardened reinforcing material 5 can be formed over the entire space of the predetermined closed section.
使用する発泡性補強材 3の大きさは、 充填すべき発泡硬化補強材の容量 および加熱発泡倍率と閉断面部分の空間容量、 形状等に応じて設定すれば よい。 たとえば、 3倍程度の発泡倍率に設計する。  The size of the foamable reinforcing material 3 to be used may be set according to the capacity of the foam hardening reinforcing material to be filled, the heat expansion ratio, the space capacity and the shape of the closed cross section, and the like. For example, design a foaming ratio of about 3 times.
実施例  Example
次に実施例を挙げて、 本発明をより具体的に説明する。  Next, the present invention will be described more specifically with reference to examples.
実施例 1  Example 1
発泡性補強材は、 下記組成から成る。  The foamable reinforcing material has the following composition.
B . 重量部 エポキシ樹脂（油化シェル社製、 ェピコート 1 0 0 1 ) 4 5 潜在性硬化剤（ジシアンジアミ ド） 5 発泡剤（ァゾジカルボンアミ ド） 3- 充填剤（カーボンブラック） 4 2 その他（熱可塑性ポリマー等） 5 この組成物を 7 0 °Cにて攪拌混合し、 次いで混合物を押出しながら、 冷 却、 成形を行い、 4 X 4 X 1 5 cmの固型棒状の発泡性補強材を得る。 な お、 該補強材に対し、 図 1 C (右側）で示した凹型のクリ ップ (樹脂成形品） を、 所定の箇所 (底面）に埋め込む。 B. Parts by weight Epoxy resin (Epicoat 1001 manufactured by Yuka Shell Co., Ltd.) 4 5 Latent curing agent (dicyandiamide) 5 Blowing agent (azodicarbonamide) 3- Filler (carbon black) 4 2 Others (Thermoplastic polymers, etc.) 5 This composition is stirred and mixed at 70 ° C., and then cooled and molded while extruding the mixture to obtain a 4 × 4 × 15 cm solid rod-shaped foamable reinforcing material. In addition, a concave clip (resin molded product) shown in Fig. 1C (right side) is embedded in a predetermined location (bottom) of the reinforcing material.
次に、 図 2に示されるような閉断面構造部材の模型箱（5 X 5 X 3 O cm) の仕切板 6上に、 図 1 C (左側）に示したスタッ ドボルト（ポップリベッ ト ファスナ一社製）をアーク溶接で固定した後、 該スタツ ドボルトに対し上 述の発泡性補強材を、 その凹型クリ ップによる嵌合を介してワンタツチで 差込む。 次いで、 箱内を 1 7 0 °Cで 2 0分間加熱して、 発泡硬化補強材を 形成する（発泡倍率 3倍に設定)。  Next, the stud bolt (pop rivet fastener company) shown in Fig. 1C (left) is placed on the partition plate 6 of a model box (5 x 5 x 3 O cm) of a structural member with a closed section as shown in Fig. 2. Is fixed by arc welding, and the foamable reinforcing material described above is inserted into the stud bolt with a one-touch through the fitting with the concave clip. Next, the inside of the box is heated at 170 ° C for 20 minutes to form a foam-hardened reinforcing material (foaming ratio set to 3 times).
模型箱から発泡硬化補強材を取出したところ、 すみずみまで完全に充填 されており、 また切断面は均一な発泡状態を呈し、 模型箱の全周辺に強固 に接着していたことが認められた さらに、 箱内の隙間（2 mm)からの流 出もなかった。  When the foam hardening reinforcing material was removed from the model box, it was confirmed that it was completely filled up to every corner, and that the cut surface had a uniform foaming state and was firmly adhered to the entire periphery of the model box. Furthermore, there was no outflow from the gap (2 mm) in the box.
本発明方法によれば、 発泡性補強材を車体の閉断面部分を有する構造部 材に設けた仕切板上に容易かつ確実強固に設置できることから、 電着塗装 工程への移動 (搬送）中に、 あるいは電着塗装工程における電着液浸漬時の 水圧によって、 発泡性補強材が設置箇所から脱落もしくはずれるといった 事態を回避し、 かつ閉断面構造部材の空間のすみずみまで電着硬化膜を形 成できる。 しかも、 焼付け塗装工程での流れ落ちの問題もなく、 所定空間 の完全充填を果しうる。  According to the method of the present invention, since the foamable reinforcing material can be easily and securely installed on the partition plate provided on the structural member having the closed cross section of the vehicle body, the foaming reinforcing material can be easily transferred during the movement (transportation) to the electrodeposition coating process. Or, it is possible to prevent the foamable reinforcing material from dropping or slipping from the installation location due to the water pressure at the time of immersing the electrodeposition liquid in the electrodeposition coating process, and to form the electrodeposition cured film everywhere in the space of the closed-section structural member. Can be achieved. In addition, the predetermined space can be completely filled without the problem of run-off during the baking coating process.

Claims

請 求 の 範 囲  The scope of the claims
1 -車両生産ラインにおいて、 閉断面構造を有する車体の閉断面部分內 に発泡硬化した補強材を充填して、 該車体を補強する方法であって、 上記閉断面部分内に適当間隔で設けられた少なく とも 1個の仕切板に、 凸状部を設置し、  1-In a vehicle production line, a method of reinforcing a vehicle body by filling a foamed and hardened reinforcing material into a closed cross-section portion of a vehicle body having a closed cross-section structure, wherein the reinforcing member is provided at appropriate intervals in the closed cross-section portion. At least one partition plate is provided with a convex part,
該凸状部に、 固型棒状の熱硬化発泡性補強材を保持させ、  The convex portion holds a solid rod-shaped thermosetting foamable reinforcing material,
次いで、 電着塗装工程後、 塗装焼付け工程において、 熱硬化発泡性補強 材を発泡硬化させる  Next, after the electrodeposition coating process, in the coating baking process, the thermosetting foamable reinforcing material is foamed and cured.
ことを含んでなる車体の補強方法。 A method of reinforcing a vehicle body comprising:
2 . 固型棒状の熱硬化発泡性補強材が、 エポキシ榭脂系の常温粘稠固体 の補強材であり、凸状部に差込んで保持される請求項 1に記載の補強方法。  2. The reinforcing method according to claim 1, wherein the solid rod-shaped thermosetting foamable reinforcing material is an epoxy resin-based room temperature viscous solid reinforcing material, which is inserted and held in a convex portion.
3 .凸状部にはネジ山が設けられ、 一方、 固型棒状の熱硬化発泡性補強 材の底面には上記ネジ山に螺合するナツ トが埋め込まれている請求項 1に 記載の補強方法。  3. The reinforcement according to claim 1, wherein a thread is provided in the convex portion, and a nut to be screwed to the thread is embedded in a bottom surface of the solid rod-shaped thermosetting foamable reinforcing material. Method.
4 .凸状部に嵌合するクリ ップが固型棒状の熱硬化発泡性補強材の底面 に埋め込まれている請求項 1に記載の補強方法。  4. The reinforcing method according to claim 1, wherein the clip fitted to the convex portion is embedded in the bottom surface of the solid rod-shaped thermosetting foamable reinforcing material.
PCT/JP1998/001478 1997-03-31 1998-03-31 Method of reinforcing car body WO1998043868A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7975997A JPH10273069A (en) 1997-03-31 1997-03-31 Reinforcing method of vehicle body
JP9/79759 1997-03-31

Publications (1)

Publication Number Publication Date
WO1998043868A1 true WO1998043868A1 (en) 1998-10-08

Family

ID=13699156

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/001478 WO1998043868A1 (en) 1997-03-31 1998-03-31 Method of reinforcing car body

Country Status (2)

Country Link
JP (1) JPH10273069A (en)
WO (1) WO1998043868A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100512274B1 (en) * 2002-10-12 2005-09-05 헨켈코리아 주식회사 Method reinforcing body structures of cars with non-viscosity reinforcing agent
CN109070492B (en) * 2016-04-28 2020-07-03 日产自动车株式会社 Component joining method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07117713A (en) * 1993-10-20 1995-05-09 Iida Sangyo Kk Body structure reinforced with foaming filling and reinforcing method thereof
JPH0731569U (en) * 1993-12-02 1995-06-13 株式会社ネオックスラボ Attachment structure of foamable material in hollow structure and processed body for attachment of foamable material
JPH0731570U (en) * 1993-12-02 1995-06-13 株式会社ネオックスラボ Attachment structure of foamable material in hollow structure and processed body for attachment of foamable material
JPH07205834A (en) * 1994-01-19 1995-08-08 Toyota Motor Corp Filling method of foaming substance
JPH07232664A (en) * 1994-02-24 1995-09-05 Neox Lab:Kk Method for cutting of hollow part of hollow structure by foam and foam forming member
JPH08192766A (en) * 1995-01-17 1996-07-30 Suzuki Motor Corp Car body structure
JPH08198995A (en) * 1995-01-21 1996-08-06 Mitsubishi Motors Corp Heat foaming reinforcing filler and reinforcing structure for closed cross section structure material using the filler
JPH08216920A (en) * 1995-02-13 1996-08-27 Daihatsu Motor Co Ltd Car body structure of automobile

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07117713A (en) * 1993-10-20 1995-05-09 Iida Sangyo Kk Body structure reinforced with foaming filling and reinforcing method thereof
JPH0731569U (en) * 1993-12-02 1995-06-13 株式会社ネオックスラボ Attachment structure of foamable material in hollow structure and processed body for attachment of foamable material
JPH0731570U (en) * 1993-12-02 1995-06-13 株式会社ネオックスラボ Attachment structure of foamable material in hollow structure and processed body for attachment of foamable material
JPH07205834A (en) * 1994-01-19 1995-08-08 Toyota Motor Corp Filling method of foaming substance
JPH07232664A (en) * 1994-02-24 1995-09-05 Neox Lab:Kk Method for cutting of hollow part of hollow structure by foam and foam forming member
JPH08192766A (en) * 1995-01-17 1996-07-30 Suzuki Motor Corp Car body structure
JPH08198995A (en) * 1995-01-21 1996-08-06 Mitsubishi Motors Corp Heat foaming reinforcing filler and reinforcing structure for closed cross section structure material using the filler
JPH08216920A (en) * 1995-02-13 1996-08-27 Daihatsu Motor Co Ltd Car body structure of automobile

Also Published As

Publication number Publication date
JPH10273069A (en) 1998-10-13

Similar Documents

Publication Publication Date Title
US7838100B2 (en) Vehicular structural members and method of making the members
EP2334540B1 (en) Bonding with adhesive beads or plots
EP1940653B1 (en) Panel structure
EP1790554B1 (en) Expandable material and fastenable member for sealing, baffling or reinforcing and method of forming same
EP1499485B1 (en) Method for reinforcing structural members using a hollow carrier
EP2121270B1 (en) Structural reinforcement material, insert, and reinforced cavity comprising same
US20020074827A1 (en) Structural reinforcing member with ribbed thermally expansible foaming material
US20050127145A1 (en) Metallic foam
US20060008615A1 (en) Overmoulding
US20060061115A1 (en) Structural reinforcement member and method of use therefor
US20050285292A1 (en) Laminar mouldings
US20090269547A1 (en) Repair of honeycomb structures
US20120186721A1 (en) foamed inserts
US20040227377A1 (en) Structural reinforcement member and method of use therefor
US9427902B2 (en) Cavity filling
WO1998043868A1 (en) Method of reinforcing car body
JPH10157531A (en) Panel reinforcing laminated sheet

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA