WO1998043868A1 - Procede de renforcement de carrosserie - Google Patents

Procede de renforcement de carrosserie Download PDF

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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
English (en)
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/fr

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.

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  • 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

Cette invention se rapporte à un procédé visant à renforcer une carrosserie sur une chaîne de fabrication de véhicules et consistant à remplir, avec un matériau de renforcement alvéolaire et durci, une zone de section transversale fermée de la carrosserie dotée d'une structure de section transversale fermée, et à former par ailleurs une partie surélevée sur au moins une des plaques de cloisonnement installées en des emplacements espacés, appropriés, dans la section transversale fermée; à fixer à cette partie surélevée un renfort dilatable, thermodurcissable, en forme de barre et solide; à procéder à l'électrodéposition d'un revêtement sur ledit renfort; et à faire mousser et à durcir le matériau au cours d'une étape de cuisson.
PCT/JP1998/001478 1997-03-31 1998-03-31 Procede de renforcement de carrosserie WO1998043868A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7975997A JPH10273069A (ja) 1997-03-31 1997-03-31 車体の補強方法
JP9/79759 1997-03-31

Publications (1)

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

Family

ID=13699156

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/001478 WO1998043868A1 (fr) 1997-03-31 1998-03-31 Procede de renforcement de carrosserie

Country Status (2)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100512274B1 (ko) * 2002-10-12 2005-09-05 헨켈코리아 주식회사 점성이 없는 보강제로 차체 구조물을 보강하는 방법
CN109070492B (zh) * 2016-04-28 2020-07-03 日产自动车株式会社 部件接合方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07117713A (ja) * 1993-10-20 1995-05-09 Iida Sangyo Kk 発泡充填で補強されたボディ構造およびそのボディの補強方法
JPH0731569U (ja) * 1993-12-02 1995-06-13 株式会社ネオックスラボ 中空構造物における発泡性材料の取り付け構造及び発泡性材料の取り付け用加工体
JPH0731570U (ja) * 1993-12-02 1995-06-13 株式会社ネオックスラボ 中空構造物における発泡性材料の取り付け構造及び発泡性材料の取り付け用加工体
JPH07205834A (ja) * 1994-01-19 1995-08-08 Toyota Motor Corp 発泡体の充填方法
JPH07232664A (ja) * 1994-02-24 1995-09-05 Neox Lab:Kk 発泡体による中空構造物の中空部遮断方法及び発泡体形成部材
JPH08192766A (ja) * 1995-01-17 1996-07-30 Suzuki Motor Corp 車体構造
JPH08198995A (ja) * 1995-01-21 1996-08-06 Mitsubishi Motors Corp 加熱発泡充填補強材及び同加熱発泡充填補強材を用いた閉断面構造部材補強構造
JPH08216920A (ja) * 1995-02-13 1996-08-27 Daihatsu Motor Co Ltd 自動車の車体構造

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07117713A (ja) * 1993-10-20 1995-05-09 Iida Sangyo Kk 発泡充填で補強されたボディ構造およびそのボディの補強方法
JPH0731569U (ja) * 1993-12-02 1995-06-13 株式会社ネオックスラボ 中空構造物における発泡性材料の取り付け構造及び発泡性材料の取り付け用加工体
JPH0731570U (ja) * 1993-12-02 1995-06-13 株式会社ネオックスラボ 中空構造物における発泡性材料の取り付け構造及び発泡性材料の取り付け用加工体
JPH07205834A (ja) * 1994-01-19 1995-08-08 Toyota Motor Corp 発泡体の充填方法
JPH07232664A (ja) * 1994-02-24 1995-09-05 Neox Lab:Kk 発泡体による中空構造物の中空部遮断方法及び発泡体形成部材
JPH08192766A (ja) * 1995-01-17 1996-07-30 Suzuki Motor Corp 車体構造
JPH08198995A (ja) * 1995-01-21 1996-08-06 Mitsubishi Motors Corp 加熱発泡充填補強材及び同加熱発泡充填補強材を用いた閉断面構造部材補強構造
JPH08216920A (ja) * 1995-02-13 1996-08-27 Daihatsu Motor Co Ltd 自動車の車体構造

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Publication number Publication date
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