JP4767883B2 - Bonding structure of vehicle body plate material - Google Patents

Bonding structure of vehicle body plate material Download PDF

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JP4767883B2
JP4767883B2 JP2007050931A JP2007050931A JP4767883B2 JP 4767883 B2 JP4767883 B2 JP 4767883B2 JP 2007050931 A JP2007050931 A JP 2007050931A JP 2007050931 A JP2007050931 A JP 2007050931A JP 4767883 B2 JP4767883 B2 JP 4767883B2
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body plate
bead
adhesive
joint
vehicle body
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JP2008215423A (en
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孝行 山田
裕輔 高山
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Honda Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
    • F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like

Description

本発明は、異種の金属板よりなる２枚の車体板材の接合構造に関する。   The present invention relates to a joint structure for two body plate members made of different kinds of metal plates.

従来、自動車用の車体を構成する車体板材は、その必要な剛性を確保し、かつその軽量化を図るために、異種の金属板の接合、たとえば鋼板とアルミ合金板などの軽合金板との接合により構成することが行われている。   Conventionally, in order to secure the necessary rigidity and reduce the weight of a vehicle body plate material that constitutes a vehicle body for an automobile, it is necessary to join different metal plates, for example, between a steel plate and a light alloy plate such as an aluminum alloy plate. It is performed by joining.

ところで、鋼板と軽合金板とはそれらの電位が異なるため、それらが直接接触すると、電食により錆びが発生してその劣化をはやめることになることから、異種材料の金属板よりなる車体板材を接合する場合には、それらを予め接着剤により接着して、それら両板材の直接接触を回避してから、それらを加圧圧着接合手段（溶接、リベット）により接合するようにした技術手段が既に知られている。しかしながら、このようすると車体板材の接合部から接着剤がはみだすことがあり、はみだした接着剤がダイスの凹部などに入り込んで接合品質に悪影響を与えるとう弊害がある。 By the way, since the steel plate and the light alloy plate have different potentials, if they are in direct contact with each other, rusting occurs due to electrolytic corrosion and the deterioration is stopped. In the case of joining, there is a technical means in which they are bonded in advance with an adhesive to avoid direct contact between the two plate materials, and then they are joined by pressure-bonding joining means (welding, rivets). Already known. However, in this case, the adhesive sometimes protrudes from the joint portion of the vehicle body plate material, and there is an adverse effect that the sticking adhesive enters the concave portion of the die and adversely affects the joint quality.

そこで、後記特許文献１に開示のものでは、異種の金属板よりなる車体板材を接合する接合部に２種の接着剤を使用し、すなわちリベットで加圧されるエリアの接着剤を他のエリアに配置される接着剤よりも相対的に流動性の低い接着剤を使用するようにして前記弊害を解消するよにした技術手段も既に提案されている。
特開２００５−１５５６７１号公報 Therefore, in the one disclosed in Patent Document 1 described later, two types of adhesives are used in the joint portion for joining the body plate members made of different kinds of metal plates, that is, the adhesive in the area pressed by the rivet is used in the other areas. There has already been proposed a technical means which uses an adhesive having a relatively lower fluidity than the adhesive disposed in the above-mentioned to eliminate the above-mentioned adverse effects.
JP-A-2005-155671

ところで、図６（ａ）、（ｂ）に示すように、２枚の異種材料よりなる車体板材（フロントサイドフレーム、フロアパネル）を接着剤で一次的に接合したのち、加圧圧着接合手段（溶接、リベット）によりそれらを二次的に接合するようにしたものでは、前記接着剤は、熱硬化性のものが使用されることから、接合面への接着剤の塗布後、その接着剤が未だ熱硬化する前に、接合部が受ける入力、たとえば、異種の材料の熱歪み（電着塗装の乾燥工程における高温による）により生じる入力や搬送中に受ける入力が、車体板材の板面に圧縮力として作用し、これがその板材の低い曲げ剛性に打ち勝って、接合部の加圧圧着接合（溶接、リベット）点間で座屈変形してしまうことがあり、接合部に隙間が発生し、これが、接着部の強度および剛性の低下や接着剤の膜切れによる水漏れなどの不具合を招く原因になっている。 By the way, as shown in FIGS. 6 (a) and 6 (b), after the body plate material (front side frame, floor panel) made of two different materials is primarily joined with an adhesive, a pressure-bonding joining means ( In the case where they are secondarily joined by welding, rivets) , since the adhesive is thermosetting, the adhesive is applied after the adhesive is applied to the joint surface. The input received by the joint before it is still heat-cured, for example, the input generated due to thermal distortion of different materials (due to the high temperature in the electrodeposition coating drying process) or the input received during transportation is compressed on the plate surface of the body plate It acts as a force, which overcomes the low bending rigidity of the plate material and may buckle and deform between the pressure-bonding joints (welding, rivets) of the joint, creating a gap in the joint, , Adhesive strength and stiffness It is causing lead problems such as water leakage due to the film breakage decreases and adhesives.

しかしながら、前記従来の技術手段では、何れもかかる不具合を解消するに至っていない。   However, none of the conventional technical means has solved such a problem.

本発明はかかる実情に鑑みてなされたものであり、接着剤による接着接合と、加圧圧着による圧着接合（リベット、溶接）とを併用した、異種材料よりなる車体板材の接合構造において、接着剤による接着強度を高めると共に接着剤が熱硬化する前の、外部入力による座屈変形を防止し、接着剤による接合品質を高めるようにすることを目的とするものである。 The present invention has been made in view of such a situation, and in the joint structure of vehicle body plate materials made of different materials, which uses both adhesive bonding by an adhesive and pressure bonding by pressure bonding (rivet, welding). It is intended to improve the bonding strength by the adhesive and to prevent buckling deformation due to external input before the adhesive is thermally cured and to improve the bonding quality by the adhesive.

上記目的を達成するため、請求項１記載の発明は、異種材料の金属板よりなる２枚の車体板材の接合構造であって、
２枚の車体板材の少なくとも一方の車体板材がフランジ部を有しており、そのフランジ部に形成される接合面と、他方の車体板材に形成される接合面とを接着剤で接着接合したのち、それらの接合面の複数箇所を間隔をあけて、加圧圧着接合手段により圧着接合したものにおいて、
一方の車体板材のフランジ部には、隣り合う圧着接合点間で、その長手方向に延在するビードを形成し、他の車体板材に前記ビードに嵌合する他のビードを形成し、前記ビードは、その端部が扇形状に形成され、その端部の端面が、前記圧着接合点の中心から所定距離半径の円弧面に形成され、また、前記他のビードが、前記ビードと同形に形成されていることを特徴としている。 In order to achieve the above object, the invention according to claim 1 is a joining structure of two body plate members made of metal plates of different materials,
At least one vehicle body plate material of the two vehicle body plate materials has a flange portion, and after bonding the bonding surface formed on the flange portion and the bonding surface formed on the other vehicle body plate material with an adhesive, , at intervals of plural locations of their junction surface, in which bonded bonding by pressurizing pressure bonding joining means,
The flange portion of one of the body plate, between compression bonding points adjacent to form a bead which extends in the longitudinal direction, to form another bead fitted to the bead to other body plate, said bead The end portion is formed in a fan shape, the end surface of the end portion is formed as an arc surface having a radius of a predetermined distance from the center of the crimp joint, and the other bead is formed in the same shape as the bead. It is characterized by being.

本請求項１記載の発明によれば、異種の材料よりなる２枚の車両用車体板材を、接着剤により接着接合したのち、加圧圧着接合（溶接、リベット）するものにおいて、接着面に接着剤を均等に行き渡らせることができると共に接着剤の塗布面積を拡大することができるので、接合部の接着剤による接着強度を高めることができ、また、接着剤の硬化前に接合部に作用する外部入力による該接合部の座屈変形を防止し、接着剤による接合品質を高めることができる。 According to the first aspect of the present invention, two vehicle body plate members made of different materials are bonded and bonded with an adhesive , and then pressure-bonded (welded, rivet) bonded. Since the adhesive can be spread evenly and the adhesive application area can be expanded, the adhesive strength of the adhesive at the joint can be increased, and it acts on the joint before the adhesive is cured. It is possible to prevent buckling deformation of the joint due to external input, and to improve the joint quality by the adhesive.

以下、本発明の実施の形態を、添付図面に示した本発明の実施例に基づいて具体的に説明する。   DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below based on examples of the present invention shown in the accompanying drawings.

以下の実施例は、本発明車両の車体板材の接合構造を自動車の車体のフロントサイドフレームとフロアパネルとの接合構造に実施した場合であって、図１は、自動車の車体の一部破断の部分斜視図、図２は、図１の２−２線に沿う拡大断面図、図３は、図１の３矢視拡大図、図４は、図３の４−４線に沿う拡大断面図、図５は、図３の５矢視拡大図である。   The following embodiment is a case where the joining structure of the vehicle body plate material of the vehicle of the present invention is implemented in the joining structure of the front side frame and the floor panel of the automobile body. FIG. 2 is an enlarged sectional view taken along line 2-2 in FIG. 1, FIG. 3 is an enlarged view taken along arrow 3 in FIG. 1, and FIG. 4 is an enlarged sectional view taken along line 4-4 in FIG. FIG. 5 is an enlarged view taken along arrow 5 in FIG.

図１において、自動車の車体Ｂの下部には、その前後方向に縦走する左右一対のフロアフレーム１，１が互いに平行に設けられ、これらのフロアフレーム１，１の前部には、左右一対のフロントサイドフレーム２，２の後部が一体に接合されている。左右一対のフロントサイドフレーム２，２は、車室とエンジンルームとを仕切るダッシュボード３を貫通してエンジンルームの下方へと延長され、それらの前部が図示しないバルクヘッドのロアクロスメンバに結合されている。車室内において、左右一対のフロアフレーム１，１およびフロントサイドフレーム２，２の上面には、フロアパネル４が後に述べる加圧圧着接合手段を介して一体に接合される。フロアパネル４の左右中央部には、断面凸状のフロアトンネルスチフナ５が一体に隆起されており、このフロアトンネルスチフナ５は、ダッシュボード３を貫通してエンジンルームの下部へと延長されている。 In FIG. 1, a pair of left and right floor frames 1, 1 that run longitudinally in the front-rear direction are provided in parallel with each other at the lower part of a vehicle body B of the automobile. The rear portions of the front side frames 2 and 2 are joined together. The pair of left and right front side frames 2 and 2 extend through the dashboard 3 that divides the vehicle compartment and the engine room and extend downward from the engine room, and their front parts are coupled to the lower cross member of the bulkhead (not shown). Has been. In the passenger compartment, the floor panel 4 is integrally joined to the upper surfaces of the pair of left and right floor frames 1, 1 and the front side frames 2, 2 via a pressure- bonding joining means described later. The left and right central portions of the floor panel 4 has a convex cross section of the floor tunnel stiffener 5 is raised together, the floor tunnel stiffeners 5 is extended to the lower portion of the engine Le chromatography beam penetrates the dashboard 3 ing.

図２，３に示すように、各フロアフレーム１の前部に一体に接合されるフロントサイドフレーム２は、フロアフレーム１と同じく横断面チャンネル状に形成されており、その左右上縁には、水平方向に延びる外向きのフランジ部２Ｆ，２Ｆが一体に形成されており、このフランジ２Ｆ，２Ｆの上面が、フロアパネル４への接合面となる。   As shown in FIGS. 2 and 3, the front side frame 2 integrally joined to the front portion of each floor frame 1 is formed in a cross-sectional channel shape like the floor frame 1. The outward flange portions 2F and 2F extending in the horizontal direction are integrally formed, and the upper surfaces of the flanges 2F and 2F serve as a joint surface to the floor panel 4.

各フロントサイドフレーム２は、車体Ｂの軽量化を図るために、軽合金板製、この実施例ではアルミ合金板製であって、成形金型によるプレス成形により作られており、その左右上縁のフランジ部２Ｆ，２Ｆには、鋼板製のフロアパネル４が、本発明にかかる加圧圧着接合手段により一体に接合される。 Each front side frame 2 is made of a light alloy plate to reduce the weight of the vehicle body B. In this embodiment, the front side frame 2 is made of an aluminum alloy plate, and is formed by press molding using a molding die. The flange portions 2F and 2F are integrally joined with a steel plate floor panel 4 by the press- bonding means according to the present invention.

アルミ合金板製のフロントサイドフレーム２の左右のフランジ部２Ｆ，２Ｆの上面と、鋼板製のフロアパネル４の下面とは、熱硬化性の接着剤７により一次的に接合されたのち、加圧圧着接合、この実施例では、スポット溶接８により二次的に接合されるものであり、具体的には、前記フランジ部２Ｆ，２Ｆの接合面の全域への塗布を可能とした接着剤７での接着接合と、その後の、フランジ部２Ｆ，２Ｆの長手方向に間隔をあけての複数箇所でのスポット溶接８による加圧圧着接合により、接合部の電食を防止しつつ強固に接合するようにされている。   The upper surfaces of the left and right flange portions 2F, 2F of the front side frame 2 made of aluminum alloy plate and the lower surface of the steel plate floor panel 4 are primarily joined together by a thermosetting adhesive 7, and then pressurized In this embodiment, it is joined secondarily by spot welding 8, and specifically, with an adhesive 7 that can be applied to the entire joining surface of the flange portions 2F, 2F. And the subsequent pressure bonding by spot welding 8 at a plurality of locations spaced apart in the longitudinal direction of the flange portions 2F, 2F so as to firmly bond while preventing electrolytic corrosion at the joint portion. Has been.

図２〜５に示すように、フロントサイドフレーム２の左右のフランジ部２Ｆ，２Ｆの上面、すなわち接合面には、各隣り合う溶接点ｐ，ｐ間において、そのフランジ部２Ｆ，２Ｆの長手方向に沿って断面凹状のビード１０がそれぞれ形成され、それらのビード１０の中心線１０Ｌはフランジ部２Ｆの外縁線２Ｌに対して平行であり、またビード１０の両端部１０Ｅ，１０Ｅは、それらの幅が扇形状に広がっており、さらにそれら両端部１０Ｅ，１０Ｅの端面１０Ｔ，１０Ｔは高圧圧着接合点、すなわち前記スポット溶接点ｐの中心から所定距離あけ、その中心から半径Ｒ（フランジ部２Ｆの幅の約１／２）の円弧面に形成されている。 As shown in FIGS. 2 to 5, the longitudinal direction of the flange portions 2F and 2F on the upper surfaces of the left and right flange portions 2F and 2F of the front side frame 2, that is, the joint surfaces, between the adjacent weld points p and p. , And the center line 10L of the beads 10 is parallel to the outer edge line 2L of the flange portion 2F, and both end portions 10E and 10E of the bead 10 have their widths. The end faces 10T and 10T of the both end portions 10E and 10E are spaced a predetermined distance from the center of the high-pressure crimping joint, that is, the center of the spot welding point p, and the radius R (the width of the flange portion 2F). About 1/2) of the arc surface.

一方、フロアパネル４の、左右のフランジ部２Ｆ，２Ｆへの接合面には、前記ビード１０と同形であり、このビード１０と嵌合する、断面凹状の他のビード１１が形成されている。   On the other hand, on the joint surface of the floor panel 4 to the left and right flange portions 2F, 2F, another bead 11 having the same shape as the bead 10 and having a concave cross section is formed.

フロントサイドフレーム２の、前記ビード１０を形成したフランジ部２Ｆの上面に熱硬化性の接着剤７を塗布すれば、その接着剤７は、断面凹状のビード１０に充填されて、その塗布面積が増大されると共に接着剤７をフランジ部２Ｆの端部まで均等に行き渡らせることができ、これにより、フロントサイドフレーム２のフランジ部２Ｆと、フロアパネル４との接合部の接着剤７による接着接合強度が高められ、フランジ部２Ｆのエッジ部分の確実な保護が可能になる。特に、ビード１０，１１の幅はスポット溶接点ｐの付近で拡大されていることで、溶接点ｐ近傍の塗布面積が一層増大されて、前記機能が一層顕著になる。   If a thermosetting adhesive 7 is applied to the upper surface of the flange portion 2F where the bead 10 is formed on the front side frame 2, the adhesive 7 is filled into the bead 10 having a concave cross section, and its application area is reduced. The adhesive 7 can be spread evenly to the end of the flange portion 2F while being increased, and thereby, the adhesive bonding of the flange portion 2F of the front side frame 2 and the floor panel 4 by the adhesive 7 is performed. The strength is increased, and the edge portion of the flange portion 2F can be reliably protected. In particular, the width of the beads 10 and 11 is enlarged in the vicinity of the spot welding point p, so that the application area in the vicinity of the welding point p is further increased, and the above function becomes more remarkable.

また、熱硬化性の接着剤７の塗布後、その接着剤７が熱硬化する前に、アルミ合金板製のフロントサイドフレーム２と鋼板製フロアパネル４との間に生じる熱歪による外部入力や搬送中に生じる外部入力により、熱膨張率の大きいフロントサイドフレーム２のフランジ部２Ｆの接合面には、スポット溶接８，８間で圧縮力が作用するが、フランジ部２Ｆのビード１０によりフランジ部２Ｆの曲げ剛性が高められていることで、接合面の座屈変形を未然に防止することができる。   In addition, after the thermosetting adhesive 7 is applied, before the adhesive 7 is thermoset, external input or the like due to thermal strain generated between the front side frame 2 made of an aluminum alloy plate and the steel floor panel 4 A compressive force acts between the spot welds 8 and 8 on the joint surface of the flange portion 2F of the front side frame 2 having a large coefficient of thermal expansion due to external input generated during conveyance, but the flange portion is caused by the bead 10 of the flange portion 2F. Since the bending rigidity of 2F is increased, it is possible to prevent buckling deformation of the joint surface.

また、溶接接合部付近のビードの１０の幅を広げていることで、溶接接合部近傍の応力を分散することができ、一層確実に座屈変形を防止することができる。   Moreover, by expanding the width of the bead 10 near the weld joint, the stress near the weld joint can be dispersed, and buckling deformation can be prevented more reliably.

以上、本発明の実施例について説明したが、本発明はその実施例に限定されることなく、本発明の範囲内で種々の実施例が可能である。   As mentioned above, although the Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention.

たとえば、この実施例では、本発明車体板材の接合構造をフロアフレームとフロアパネルとの接合構造に実施した場合を説明したが、これを他の車体板材の接合構造、たとえば、フロアフレームとフロントサイドフレームとの接合構造にも実施でき、また、この実施例では、加圧圧着接合としてスポット溶接を用いた場合を説明したが、これに代えてリベットによる加圧圧着接合を用いてもよく、さらに、ビードは、横断面凹状に形成されるが、これを横断面凸状、その他の形状としてもよい。 For example, in this embodiment, the case where the joining structure of the vehicle body plate material of the present invention is implemented in the joining structure of the floor frame and the floor panel is described. However, this is applied to the joining structure of other vehicle body plate materials, for example, the floor frame and the front side. also be performed in the bonding structure of the frame, and in this embodiment, a case has been described using the spot welding as applied pressure bonding junction may be used applied pressure bonding joint by rivets instead of this, further The bead is formed in a concave shape in the cross section, but it may be formed in a convex shape in the cross section or other shapes.

自動車の車体の一部破断の部分斜視図Partial perspective view of a partially broken car body 図１の２−２線に沿う拡大断面図図FIG. 1 is an enlarged cross-sectional view taken along line 2-2 in FIG. 図１の３矢視拡大図1 enlarged view of FIG. 図３の４−４線に沿う拡大断面図Enlarged cross-sectional view along line 4-4 in FIG. 図３の５矢視拡大図Enlarged view of arrow 5 in FIG. 図６（ａ）は、従来のフロントサイドフレームとフロアパネルとの接合部の一部破断斜視図、図６（ｂ）は、図６（ａ）のｂ−ｂ線に沿う断面図6A is a partially broken perspective view of a joint portion between a conventional front side frame and a floor panel, and FIG. 6B is a cross-sectional view taken along line bb in FIG. 6A.

１・・・・・・・・・車体板材（フロントサイドフレーム）
２・・・・・・・・・車体板材（フロアパネル）
２Ｆ・・・・・・・・フランジ部
７・・・・・・・・・接着剤
８・・・・・・・・・圧着接合（スポット溶接）
１０・・・・・・・・・ビード
１０Ｅ・・・・・・・・端部（ビード１０の）
１０Ｔ・・・・・・・・端面（ビード１０の）
１１・・・・・・・・・他のビード
ｐ・・・・・・・・・圧着接合点（スポット溶接点）
Ｒ・・・・・・・・・所定距離半径（圧着接合点ｐからの） 1 ... Body plate material (front side frame)
2 .... Body plate (floor panel)
2F ... Flange 7 ... Adhesive 8 ... Crimp bonding (spot welding)
10 ... Bead
10E ・ ・ ・ ・ ・ ・ ・ ・ End (bead 10)
10T ... End face (bead 10)
11 ·········· Other beads
R ········ predetermined radius (from crimping junction p)

Claims (1)

異種材料の金属板よりなる２枚の車体板材（２，４）の接合構造であって、
２枚の車体板材（２，４）の少なくとも一方の車体板材（２）がフランジ部（２Ｆ）を有しており、そのフランジ部（２Ｆ）に形成される接合面と、他方の車体板材（４）に形成される接合面とを接着剤（７）で接着接合したのち、それらの接合面の複数箇所を間隔をあけて、加圧圧着接合手段により圧着接合（８）したものにおいて、
一方の車体板材（２）のフランジ部（２Ｆ）には、隣り合う圧着接合点（ｐ）間で、その長手方向に延在するビード（１０）を形成し、他方の車体板材（４）に前記ビード（１０）に嵌合する他のビード（１１）を形成し、
前記ビード（１０）は、その端部（１０Ｅ）が扇形状に形成され、その端部（１０Ｅ）の端面（１０Ｔ）が、前記圧着接合点（ｐ）の中心から所定距離半径（Ｒ）の円弧面に形成され、また、前記他のビード（１１）は、前記ビード（１０）と同形に形成されていることを特徴とする、車両の車体板材の接合構造。 It is a joint structure of two body plate members (2, 4) made of metal plates of different materials,
At least one body plate (2) of the two body plates (2, 4) has a flange portion (2F), a joint surface formed on the flange portion (2F), and the other body plate ( After adhesive bonding the cemented surface and an adhesive is formed on 4) (7), at intervals of plural locations of their junction surface, in which crimped joint (8) by applied pressure bonding joining means,
A bead (10) extending in the longitudinal direction is formed in the flange portion (2F) of one vehicle body plate (2) between adjacent crimping junctions (p), and the other vehicle body plate (4) is formed on the other vehicle body plate (4). Forming another bead (11) that fits into the bead (10) ;
The bead (10) has an end portion (10E) formed in a fan shape, and an end surface (10T) of the end portion (10E) has a radius (R) of a predetermined distance from the center of the crimp joint (p). A vehicle body plate joining structure for a vehicle , wherein the other bead (11) is formed in an arcuate surface and has the same shape as the bead (10) .
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