JP4384553B2 - Body frame structure - Google Patents

Body frame structure Download PDF

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JP4384553B2
JP4384553B2 JP2004168491A JP2004168491A JP4384553B2 JP 4384553 B2 JP4384553 B2 JP 4384553B2 JP 2004168491 A JP2004168491 A JP 2004168491A JP 2004168491 A JP2004168491 A JP 2004168491A JP 4384553 B2 JP4384553 B2 JP 4384553B2
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rear frame
frame member
wall
vehicle body
adapter
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JP2005343418A (en
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正弘 鈴木
渉 中里
裕一 黒田
義行 池田
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Subaru Corp
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Fuji Jukogyo KK
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Description

本発明は、車体フレーム構造に関し、特にフレーム部材を連結して構成された車体フレーム構造に関する。   The present invention relates to a vehicle body frame structure, and more particularly to a vehicle body frame structure configured by connecting frame members.

自動車の車体前部は、トーボードによって車室とエンジンルームとに区画され、後部がトーボードの下部からフロアパネルの下面に亘って取り付けられてエンジンルームの両側に沿って車体前方方向に延在する左右一対のフロントサイドフレームが配置され、このフロントサイドフレームにエンジンとギヤトレーンとを結合したパワーユニットやフロントサスペンションが支持されている。   The front part of the vehicle body is partitioned into a vehicle compartment and an engine room by a toe board, and the rear part is attached from the lower part of the toe board to the lower surface of the floor panel and extends to the front of the car body along both sides of the engine room. A pair of front side frames are disposed, and a power unit and a front suspension in which an engine and a gear train are coupled are supported on the front side frames.

また、フロントサイドフレームは、一般に前面衝突時等の衝撃荷重の入力に伴って潰れ変形することによって、衝撃エネルギを吸収して乗員への衝撃を緩和するように構成されている。この種のフロントサイドフレームは、車体前方からの衝撃荷重によって軸方向の潰れ変形、いわゆる軸圧壊変形して衝撃エネルギを吸収する筒状の前部フレーム部材と、比較的剛性が大きな後部フレーム部材とを連結し、前部フレームの軸圧壊変形によって衝撃エネルギを吸収するものが種々提案されている。   Further, the front side frame is generally configured to absorb the impact energy and relieve the impact to the occupant by being crushed and deformed in response to an input of an impact load at the time of a frontal collision or the like. This type of front side frame is composed of a cylindrical front frame member that absorbs impact energy by axial crushing deformation, that is, so-called axial crushing deformation, by a shock load from the front of the vehicle body, and a rear frame member that has relatively high rigidity. There are various proposals for connecting impacts and absorbing impact energy by axial crushing deformation of the front frame.

この種のフロントサイドフレームとしては、例えば図９に要部分解斜視図を示すように、アルミニウム合金からなる断面六角形の筒状で後端部が結合部１０２となると共にこの結合部１０２の上部側にストラットハウジング１０９が取り付けられるストラット取付板１０３が形成された前部フレーム部材１０１と、鋼製で前端部が前部フレーム部材１０１の結合部１０２と嵌合可能な結合部１０６となり車体後方側が下方に屈曲形成されて上部が開放する開断面形状の後部フレーム部材１０５と、前部フレーム部材１０１の結合部１０２内に嵌合するナットプレート１０７とを有し、予め電着塗装が施された前部フレーム部材１０１の結合部１０２と後部フレーム部材１０５の結合部１０６を嵌合して、互いに嵌合する後部フレーム部材１０５及び前部フレーム部材１０１の各結合部１０２、１０６に穿設された複数のボルト挿入孔１０２ａ、１０６ａに挿入してナットプレート１０７に設けられたナット１０７ａに螺合する図示しないボルトによって前部フレーム部材１０１と後部フレーム部材１０５とを結合するフロントサイドフレームが知られている（例えば、特許文献１参照）。   As this type of front side frame, for example, as shown in an exploded perspective view of the main part in FIG. 9, the rear end portion becomes a connecting portion 102 with a hexagonal cross section made of aluminum alloy and the upper portion of the connecting portion 102 The front frame member 101 on which the strut mounting plate 103 to which the strut housing 109 is attached is formed, and the front end portion is a coupling portion 106 that can be fitted to the coupling portion 102 of the front frame member 101 and made of steel. It has a rear frame member 105 that is bent downward and has an open cross-sectional shape that is open at the top, and a nut plate 107 that fits into the coupling portion 102 of the front frame member 101, and has been subjected to electrodeposition coating in advance. The joint part 102 of the front frame member 101 and the joint part 106 of the rear frame member 105 are fitted to each other, and the rear frame member 10 is fitted to each other. And the front frame by bolts (not shown) that are inserted into a plurality of bolt insertion holes 102a, 106a formed in the coupling portions 102, 106 of the front frame member 101 and screwed into nuts 107a provided on the nut plate 107. A front side frame that joins the member 101 and the rear frame member 105 is known (see, for example, Patent Document 1).

特開２００３−２００８４９号公報Japanese Patent Laid-Open No. 2003-200849

しかし、上記特許文献１に示すフロントサイドフレームによると、前部フレーム部材１０１と後部フレーム部材１０５のそれぞれ軸心が偏倚すると共に後部フレーム部材１０５が屈曲形成されて上部が開放する開断面形状に形成されることから、前部フレーム部材１０１に前方から衝撃荷重Ｐが入力された際、その衝撃荷重Ｐによって後部フレーム部材１０５の上方が拡開すると共に座屈変形して後部フレーム部材１０５及び前部フレーム部材１０１が大きくかつ複雑に挙動することが懸念される。この挙動により前部フレーム部材１０１からの衝撃荷重Ｐを後部フレーム部材１０５によって良好に受け止めることができず、前部フレーム部材１０１の円滑な軸圧壊変形が阻害されて所期の衝撃エネルギ吸収が達成できない要因となる。一方、開断面形状でかつ屈曲形成された後部フレーム部材１０５の剛性を確保するためにその板厚等を大きくすると車体重量の増大を招き燃費の低下を招く要因となる。   However, according to the front side frame shown in Patent Document 1, the front frame member 101 and the rear frame member 105 are each formed with an open cross-sectional shape in which the axes of the front frame member 101 and the rear frame member 105 are biased and the rear frame member 105 is bent and opened. Therefore, when an impact load P is input from the front to the front frame member 101, the upper portion of the rear frame member 105 is expanded and buckled and deformed by the impact load P, and the rear frame member 105 and the front portion There is a concern that the frame member 101 behaves in a large and complicated manner. Due to this behavior, the impact load P from the front frame member 101 cannot be satisfactorily received by the rear frame member 105, and smooth axial crushing deformation of the front frame member 101 is hindered to achieve the expected impact energy absorption. It becomes a factor that cannot. On the other hand, if the plate thickness or the like is increased in order to ensure the rigidity of the bent rear frame member 105 having an open cross-sectional shape, the weight of the vehicle body is increased, which causes a reduction in fuel consumption.

更に、軸方向に連続する前部フレーム部材１０１の結合部１０２を、この結合部１０２と同軸方向、即ち衝撃荷重入力方向に連続する開断面形状の結合部１０６に嵌合させてボルト結合することから、前方からの衝撃荷重が入力されるとボルトに大きな剪断荷重が作用する。このため、多数のボルトによる結合を要すると共に、互いに嵌合する結合部１０２及び１０６が軸方向に長大になり、かつ結合部１０２にストラット取付板１０３が形成されて前部フレーム部材１０１の後部範囲の変形が拘束されて前部フレーム部材１０２の有効な軸圧壊変形範囲が制限され、前部フレーム部材１０２の全長に亘る軸圧壊変形による効率的な衝撃エネルギの吸収が妨げられることが懸念される。   Further, the coupling portion 102 of the front frame member 101 that is continuous in the axial direction is fitted to the coupling portion 106 that is coaxial with the coupling portion 102, that is, in the direction of impact load input, and is bolted. Therefore, when an impact load from the front is input, a large shear load acts on the bolt. For this reason, a large number of bolts need to be coupled, the coupling portions 102 and 106 that are fitted to each other are elongated in the axial direction, and a strut mounting plate 103 is formed on the coupling portion 102 so that the rear portion of the front frame member 101 is formed. There is a concern that the effective axial crushing deformation range of the front frame member 102 is limited by the deformation of the front frame member 102, and efficient impact energy absorption is prevented due to the axial crushing deformation over the entire length of the front frame member 102. .

また、フレーム部材を連結する同様の構成によるフロントアッパサイドフレーム等の他の車体フレームにおいても同様に衝撃エネルギの吸収が妨げられることが懸念される。   Further, there is a concern that the absorption of impact energy is similarly hindered in other vehicle body frames such as a front upper side frame having a similar structure for connecting the frame members.

従って、かかる点に鑑みなされた本発明の目的は、軸圧壊変形による効率的な衝撃エネルギの吸収が達成できる車体フレーム構造を提供することにある。   Accordingly, an object of the present invention made in view of such a point is to provide a vehicle body frame structure that can achieve efficient impact energy absorption by axial crushing deformation.

上記目的を達成する請求項１に記載の車体フレーム構造の発明は、車体前後方向に沿って延在する後部フレーム部材と、該後部フレーム部材に連結されて車体前方から入力される衝撃荷重によって潰れ変形して衝撃エネルギを吸収する前部フレーム部材とを備えた車体フレーム構造において、筒状の閉断面形状で車体前後方向に沿って延在する後部フレーム部材と、該後部フレーム部材と同軸上に配置された中空閉断面形状の前部フレーム部材と、対向配置された上記後部フレーム部材と前部フレーム部材との間に介在して後部フレーム部材の前端縁に対向する第１面及び前部フレーム部材の後端縁と対向する第２面を有する板状の基部と、該基部の第１面から突出して後部フレーム部材の前端部分内に嵌合する後部フレーム結合部と、第２面に設けられて上記前部フレーム部材の後端部分が結合される前部フレーム結合部を有するブロック状のアダプタと、艤装部材とを有し、上記後部フレーム内に嵌合する後部フレーム結合部と後部フレーム部材と上記艤装部材とを共にボルト結合したことを特徴とする。   The vehicle body frame structure according to claim 1, which achieves the above object, is crushed by a rear frame member extending along the longitudinal direction of the vehicle body and an impact load connected to the rear frame member and inputted from the front of the vehicle body. In a vehicle body frame structure including a front frame member that deforms and absorbs impact energy, a rear frame member that extends in the longitudinal direction of the vehicle body with a cylindrical closed cross-sectional shape, and coaxially with the rear frame member A front frame member having a hollow closed cross-sectional shape that is disposed, and a first surface and a front frame that are interposed between the rear frame member and the front frame member that are disposed to face each other and face the front edge of the rear frame member A plate-like base portion having a second surface facing the rear end edge of the member; a rear frame coupling portion protruding from the first surface of the base portion and fitted into the front end portion of the rear frame member; A block-shaped adapter having a front frame coupling portion that is provided on the front frame member to which a rear end portion of the front frame member is coupled, and a fitting member, and a rear frame coupling portion that fits into the rear frame; Both the rear frame member and the above-mentioned outfitting member are bolted together.

請求項２に記載された発明は、請求項１のフレーム構造において、上記前部フレーム部材は、アルミニウム系材料で形成され、後部フレーム部材は、鉄系材料で形成されたことを特徴とする。   According to a second aspect of the present invention, in the frame structure of the first aspect, the front frame member is formed of an aluminum-based material, and the rear frame member is formed of an iron-based material.

請求項３に記載の発明は、請求項２の車体フレーム構造において、上記アダプタは、アルミニウム系材料で形成されると共に表面に絶縁被膜を形成する耐電食処理が施されたことを特徴とする。   According to a third aspect of the present invention, in the vehicle body frame structure according to the second aspect, the adapter is formed of an aluminum-based material and is subjected to an anti-corrosion treatment that forms an insulating film on the surface.

請求項４に記載の発明は、請求項１〜３のいずれかの車体フレーム構造において、上記後部フレーム部材は、車体前後方向に連続する断面多角形状であって、上記アダプタは、上記第１面が後部フレーム部材の前端縁に対向すると共に、後部フレーム結合部が上記後部フレームの前端部分に端合する断面多角形状であり、上記後部フレーム部材内に嵌合する後部フレーム結合部と後部フレーム部材と上記艤装部材とを共にボルト結合したことを特徴とする。   According to a fourth aspect of the present invention, in the vehicle body frame structure according to any one of the first to third aspects, the rear frame member has a polygonal cross section continuous in the longitudinal direction of the vehicle body, and the adapter includes the first surface. The rear frame coupling portion and the rear frame member are opposed to the front edge of the rear frame member, and the rear frame coupling portion has a polygonal cross-sectional shape that mates with the front end portion of the rear frame, and is fitted into the rear frame member. And the outfitting member are bolted together.

請求項５に記載の発明は、請求項１〜４のいずれかの車体フレーム構造において、上記後部フレーム部材は、互いに対向する外側壁及び内側壁と、上記外側壁と内側壁のそれぞれの上端縁間及び下端縁間をそれぞれ連結する上側壁及び下側壁とによって車体前後方向に連続形成された矩形断面形状であって、上記アダプタは、上記基部の第１面が後部フレーム部材の前端縁に対向すると共に、後部フレーム結合部が上記後部フレーム部材の外側壁、内側壁、上側壁、下側壁のそれぞれ内面に対向する外側面、内側面、上側面、下側面を有して後部フレーム部材内に嵌合する断面矩形状でかつ上側面から下側面に貫通するボルト挿通孔を有し、上記艤装品が上記アダプタの後部フレーム結合部に穿設されたボルト挿通孔及び後部フレーム部材の上側壁と下側壁に対向して穿設されたそれぞれの取付孔を貫通してナットと螺合するボルトによってアダプタの後部フレーム結合部及び上側壁と下側壁と共に締結されたことを特徴とする。   According to a fifth aspect of the present invention, in the vehicle body frame structure according to any one of the first to fourth aspects, the rear frame member includes an outer wall and an inner wall facing each other, and upper end edges of the outer wall and the inner wall. The adapter has a rectangular cross-sectional shape that is continuously formed in the longitudinal direction of the vehicle body by an upper side wall and a lower side wall that connect between the lower edge and the lower edge, respectively, and the adapter has the first surface of the base portion facing the front edge of the rear frame member In addition, the rear frame coupling portion has an outer side surface, an inner side surface, an upper side surface, and a lower side surface facing the inner surfaces of the outer side wall, the inner side wall, the upper side wall, and the lower side wall of the rear frame member. A bolt insertion hole having a rectangular cross-section to be fitted and penetrating from the upper side surface to the lower side surface, and the fittings of the bolt insertion hole and rear frame member formed in the rear frame coupling portion of the adapter Characterized in that it is fastened together with the side walls and each of which is bored to face the lower wall by the mounting hole through to the nut screwed to the bolt of the adapter rear frame coupling portion, and the upper wall and lower wall.

請求項６に記載の発明は、請求項１〜４のいずれかの車体フレーム構造において、上記後部フレーム部材は、互いに対向する外側壁及び内側壁と、上記外側壁と内側壁のそれぞれの上端縁間及び下端縁間をそれぞれ連結する上側壁及び下側壁とによって車体前後方向に連続形成された矩形断面形状であって、上記アダプタは、上記基部の第１面が後部フレーム部材の前端縁に対向すると共に、後部フレーム結合部が上記後部フレーム部材の外側壁、内側壁、上側壁、下側壁のそれぞれ内面に対向する外側面、内側面、上側面、下側面を有して後部フレーム部材内に嵌合する断面矩形状でかつ外側面から内側面に貫通するボルト挿通孔を有し、上記艤装品が上記アダプタの後部フレーム結合部に穿設されたボルト挿通孔及び後部フレーム部材の外側壁と内側壁に対向して穿設されたそれぞれの取付孔を貫通してナットと螺合するボルトによってアダプタの後部フレーム結合部及び外側壁と内側壁と共に締結されたことを特徴とする。   The invention according to claim 6 is the vehicle body frame structure according to any one of claims 1 to 4, wherein the rear frame member includes an outer wall and an inner wall facing each other, and upper end edges of the outer wall and the inner wall. The adapter has a rectangular cross-sectional shape that is continuously formed in the longitudinal direction of the vehicle body by an upper side wall and a lower side wall that connect between the lower edge and the lower edge, respectively, and the adapter has the first surface of the base portion facing the front edge of the rear frame member In addition, the rear frame coupling portion has an outer side surface, an inner side surface, an upper side surface, and a lower side surface facing the inner surfaces of the outer side wall, the inner side wall, the upper side wall, and the lower side wall of the rear frame member. A bolt insertion hole having a rectangular cross-section to be fitted and penetrating from the outer side surface to the inner side surface, and the fitting is drilled in the rear frame coupling portion of the adapter and the rear frame member. Characterized in that it is fastened together with the side wall rear frame coupling portion of the adapter by a bolt to the nut screwed with it facing the inside walls through the respective mounting holes drilled and the outer wall and the inner wall.

請求項１に記載の発明によると、閉断面形状に形成された後部フレーム部材の前端部分にブロック状で剛性を有するアダプタの基部に突設された後部フレーム結合部が嵌合して後部フレーム部材の前部部分を閉鎖し、かつこの嵌合状態で後部フレーム結合部と後部フレーム部材と艤装部材を共にボルト結合することによって、閉断面形状に形成された後部フレーム部材の前端部分の変形が拘束されて後部フレーム部材全体が車体の骨格構造として十分な強度及び剛性が確保される。この強度及び剛性が確保された筒状の後部フレームの前端縁と軸圧壊変形による衝撃エネルギ吸収に優れた筒状に形成された前部フレーム部材の後端縁が、アダプタの基部を介在して対向し、かつ前部フレーム部材と後部フレーム部材が同軸上に配置されることから、車体前方から前部フレーム部材に入力される衝撃荷重を前部フレーム部材の後端縁からアダプタの基部を介して後部フレーム部材に確実に伝達でき、剛性が確保された後部フレーム部材によって強固に受け止めることができる。更に、艤装部材が後部フレーム部材側に取り付けられて、艤装部材の取り付けに影響されることなく、前部フレーム部材の全長に亘って軸圧壊変形範囲が確保でき、前部フレーム部材の全長範囲による軸圧壊変形による衝撃エネルギの吸収が可能になり、乗員への衝撃が十分に緩和でき、乗員の安全性が確保できる。   According to the first aspect of the present invention, the rear frame member is formed by fitting the rear frame coupling portion projecting from the base of the adapter having a block shape and rigidity to the front end portion of the rear frame member formed in the closed cross-sectional shape. The front part of the rear frame member formed in a closed cross-sectional shape is restrained by closing the front part of the frame and bolting the rear frame joint part, the rear frame member, and the fitting member together in this fitted state. As a result, the entire rear frame member ensures sufficient strength and rigidity as the skeleton structure of the vehicle body. The front end edge of the cylindrical rear frame in which the strength and rigidity are ensured and the rear end edge of the front frame member formed in a cylindrical shape excellent in impact energy absorption due to axial crushing deformation are interposed between the base of the adapter. Since the front frame member and the rear frame member are coaxially arranged so as to face each other, an impact load inputted to the front frame member from the front of the vehicle body is applied from the rear edge of the front frame member through the base of the adapter. Thus, it can be transmitted to the rear frame member reliably, and can be firmly received by the rear frame member with ensured rigidity. Furthermore, the outfitting member is attached to the rear frame member side, and the axial crushing deformation range can be secured over the entire length of the front frame member without being affected by the attachment of the outfitting member, and depending on the full length range of the front frame member. The impact energy can be absorbed by the axial crushing deformation, the impact on the occupant can be sufficiently mitigated, and the safety of the occupant can be ensured.

また、強度及び剛性が確保された後部フレーム部材にアダプタと共に艤装部材を結合することによって、艤装部材の取付支持剛性が確保できる。   Moreover, the attachment support rigidity of the outfitting member can be ensured by coupling the outfitting member together with the adapter to the rear frame member in which strength and rigidity are ensured.

請求項２に記載の発明によると、前部フレーム部材を軸圧壊変形による衝撃エネルギ吸収に優れ、かつ押出成形性に優れたアルミニウム系材料によって形成し、後部フレーム部材を強度及び剛性に優れた鉄系材料によって形成することによって、前部フレーム部材の軸圧壊変形による衝撃エネルギの吸収がより効率的に達成でき、かつ艤装部材の支持剛性が向上する。   According to the invention described in claim 2, the front frame member is made of an aluminum-based material that is excellent in impact energy absorption due to axial crushing deformation and is excellent in extrusion moldability, and the rear frame member is iron that is excellent in strength and rigidity. By forming with a system material, absorption of impact energy due to axial crushing deformation of the front frame member can be achieved more efficiently, and the support rigidity of the outfitting member is improved.

請求項３に記載の発明によると、アダプタを加工性に優れ軽量なアルミニウム系材料で形成することによって、容易かつ軽量にアダプタが形成でき、かつ表面に絶縁被膜を形成する耐電食処理を施すことによって、異種金属材料によって形成された後部フレーム部材とイオン化傾向の相違により発生する電食が抑制できる。   According to the invention described in claim 3, by forming the adapter from a lightweight aluminum-based material having excellent workability, the adapter can be formed easily and lightly, and an anti-corrosion treatment is performed to form an insulating film on the surface. Therefore, it is possible to suppress the electrolytic corrosion generated due to the difference in ionization tendency from the rear frame member formed of the different metal material.

請求項４に記載の発明によると、後部フレーム部材は断面多角形状であって、アダプタの後部フレーム結合部は後部フレーム部材の前端部分に嵌合する断面多角形状であり、後部フレーム部材とアダプタの後部結合部と艤装部材を共にボルト結合することによって、後部フレーム部材の変形が確実に拘束され、後部フレーム部材の剛性が確保できると共に、前部フレーム部材の軸圧壊による衝撃エネルギの吸収が確実になり、かつ艤装部材の支持剛性が確保できる。   According to the invention of claim 4, the rear frame member has a polygonal cross section, and the rear frame coupling portion of the adapter has a polygonal cross section that fits into the front end portion of the rear frame member. By bolting the rear coupling part and the outfitting member together, the deformation of the rear frame member is reliably restrained, the rigidity of the rear frame member can be ensured, and the shock energy absorption due to the axial collapse of the front frame member is ensured. And the supporting rigidity of the outfitting member can be ensured.

請求項５は、後部フレーム部材及びアダプタの具体的構成を示すもので、後部フレーム部材を外側壁、内側壁、上側壁、下側壁を有する矩形断面形状にし、アダプタの後部フレーム結合部を後部フレーム部材の外側壁、内側壁、上側壁、下側壁のそれぞれ内面に対向する外側面、内側面、上側面、下側面を有して後部フレーム部材内に嵌合する断面矩形状に形成すると共に、艤装品をアダプタの後部フレーム結合部に穿設されたボルト挿通孔及び後部フレーム部材の上側壁と下側壁に対向して穿設されたそれぞれの取付孔を貫通してナットと螺合するボルトによってアダプタの後部フレーム結合部と上側壁と下側壁と共に締結することによって後部フレーム部材の変形が確実に拘束され、後部フレーム部材の剛性が確保できると共に、前部フレーム部材の軸圧壊による衝撃エネルギの吸収が確実になり、かつ艤装部材の支持剛性が確保できる。更に、アダプタの後部フレーム結合部にネジ部を要することなくアダプタの形状の簡素化及び製造コストの抑制が期待できる。   Claim 5 shows a specific configuration of the rear frame member and the adapter. The rear frame member has a rectangular cross-sectional shape having an outer wall, an inner wall, an upper wall, and a lower wall, and the rear frame coupling portion of the adapter is a rear frame. The outer side wall, the inner side wall, the upper side wall, and the lower side wall of the member are formed in a rectangular cross-section that has an outer side, an inner side, an upper side, and a lower side that face the inner side of the lower side wall and fits in the rear frame member, The bolt is inserted into the rear frame coupling portion of the adapter through the bolt insertion hole and the bolts which are screwed into the nuts through the respective mounting holes formed facing the upper and lower side walls of the rear frame member. By fastening the adapter together with the rear frame coupling portion, the upper side wall, and the lower side wall, the deformation of the rear frame member is reliably restrained, the rigidity of the rear frame member can be ensured, and the front frame can be secured. Absorption of the impact energy by axial collapse of the over arm member is ensured, and support rigidity of the outfitting member can be ensured. Furthermore, simplification of the shape of the adapter and suppression of manufacturing costs can be expected without requiring a screw portion at the rear frame coupling portion of the adapter.

請求項６は、後部フレーム部材及びアダプタの具体的構成を示すもので、後部フレーム部材を外側壁、内側壁、上側壁、下側壁を有する矩形断面形状にし、アダプタの後部フレーム結合部を後部フレーム部材の外側壁、内側壁、上側壁、下側壁のそれぞれ内面に対向する外側面、内側面、上側面、下側面を有して後部フレーム部材内に嵌合する断面矩形状に形成すると共に、艤装品をアダプタの後部フレーム結合部に穿設されたボルト挿通孔及び後部フレーム部材の外側壁と内側壁に対向して穿設されたそれぞれの取付孔を貫通してナットと螺合するボルトによってアダプタの後部フレーム結合部及び外側壁と内側壁と共に締結することによって後部フレーム部材の変形を拘束し後部フレーム部材の剛性が確保できると共に、前部フレーム部材の軸圧壊変形による衝撃エネルギの吸収が確実になり、かつ艤装部材の支持剛性が確保できる。更に、アダプタの後部フレーム結合部にネジ部を要することなくアダプタの形状の簡素化及び製造コストの抑制が期待できる。   Claim 6 shows a specific configuration of the rear frame member and the adapter, wherein the rear frame member has a rectangular cross-sectional shape having an outer wall, an inner wall, an upper wall, and a lower wall, and the rear frame coupling portion of the adapter is a rear frame. The outer side wall, the inner side wall, the upper side wall, and the lower side wall of the member are formed in a rectangular cross-section that has an outer side, an inner side, an upper side, and a lower side that face the inner side of the lower side wall and fits in the rear frame member, Bolts are inserted into the rear frame coupling portion of the adapter through the bolt insertion holes and bolts that are screwed into the nuts through the respective mounting holes formed facing the outer and inner walls of the rear frame member. By fastening the adapter together with the rear frame coupling part and the outer and inner walls, the deformation of the rear frame member can be restrained and the rigidity of the rear frame member can be secured, and the front frame part Absorption of the impact energy by the axial collapse deformation is ensured, and support rigidity of the outfitting member can be ensured. Furthermore, simplification of the shape of the adapter and suppression of manufacturing costs can be expected without requiring a screw portion at the rear frame coupling portion of the adapter.

以下、本発明による車体フレーム構造の実施の形態を、フロントサイドフレームを例に図１乃至図８を参照して説明する。   Hereinafter, an embodiment of a vehicle body frame structure according to the present invention will be described with reference to FIGS. 1 to 8, taking a front side frame as an example.

図１は自動車の車体前部の要部概要を示す斜視図、図２は図１のＡ部拡大図、図３は図２の分解斜視図、図４は図２のＩ−Ｉ線断面図、図５は図２のＩＩ−ＩＩ線断面図、図６はアダプタの説明図である。なお、矢印Ｆは車体前部方向を示している。   1 is a perspective view showing an outline of a main part of a front part of a vehicle body of an automobile, FIG. 2 is an enlarged view of a part A in FIG. 1, FIG. 3 is an exploded perspective view of FIG. 5 is a cross-sectional view taken along the line II-II in FIG. 2, and FIG. 6 is an explanatory diagram of the adapter. An arrow F indicates the front direction of the vehicle body.

車体１の前部分は、図１に要部を示すように車幅方向に延在するトーボード２によって車室ＲとエンジンルームＥとに区画され、後部がトーボード２の下部からフロアパネルの下面に亘って取り付けられてエンジンルームＥの両側に沿って車体前方方向Ｆに延在する左右一対の車体フレームであるフロントサイドフレーム１０と、トーボード２の上部から車体前方方向Ｆに延在する左右一対のフロントアッパフレーム３を備え、フロントサイドフレーム１０とフロントアッパフレーム３との間にフロントサスペンション用のストラットタワー５が組み付けられている。   A front portion of the vehicle body 1 is partitioned into a vehicle compartment R and an engine room E by a toe board 2 extending in the vehicle width direction as shown in FIG. 1, and a rear part is formed from the lower part of the toe board 2 to the lower surface of the floor panel. A pair of left and right front side frames 10 extending in the vehicle body front direction F along both sides of the engine room E, and a pair of left and right vehicles extending in the vehicle body front direction F from the top of the toe board 2 A front upper frame 3 is provided, and a strut tower 5 for front suspension is assembled between the front side frame 10 and the front upper frame 3.

フロントサイドフレーム１０は、図２に図１のＡ部拡大図を示すと共に図３に図２の分解斜視図を示すように、後部がトーボード２の下部からフロアパネルの下面に亘って取り付けられて車体前方方向Ｆに延在する鉄系材料の後部フレーム部材１１と、この後部フレーム部材１１の前端にアダプタ３１を介在して連結されて車体前方方向Ｆに延在するアルミニウム系材料の前部フレーム部材２１によって構成され、フロントサイドフレーム１０に艤装部材、例えばエンジンマウント５１が取り付け支持される。   The front side frame 10 is attached from the lower part of the toe board 2 to the lower surface of the floor panel as shown in FIG. 2 which is an enlarged view of part A of FIG. 1 and in FIG. 3 is an exploded perspective view of FIG. The rear frame member 11 of the iron-based material extending in the vehicle body front direction F, and the front frame of the aluminum-based material extending in the vehicle body front direction F connected to the front end of the rear frame member 11 via the adapter 31 The member 21 is configured, and a fitting member, for example, an engine mount 51 is attached to and supported by the front side frame 10.

後部フレーム部材１１は、筒状体を半割状に形成したアウタパネル１２及びインナパネル１６によって車体前後方向に沿ってほぼ直線状で連続する閉断面形状に構成されている。   The rear frame member 11 is formed in a closed cross-sectional shape that is continuous in a substantially straight line along the longitudinal direction of the vehicle body by an outer panel 12 and an inner panel 16 that are formed by splitting a cylindrical body into a half.

アウタパネル１２は、図２乃至図４に示すように、外側壁１３と、この外側壁１３の上端縁及び下端縁からそれぞれ車体内方に向かって折曲形成されて互いに対向する上側壁１４及び下側壁１５を有し、上側壁１４及び下側壁１５の端縁にそれぞれ上側フランジ１４ａ及び下側フランジ１５ａが折曲形成されて車体前後方向に連続する断面略コ字状に形成されている。   As shown in FIGS. 2 to 4, the outer panel 12 includes an outer wall 13, an upper wall 14 and a lower wall that are bent from the upper edge and the lower edge of the outer wall 13 toward the inside of the vehicle body and face each other. The upper flange 14a and the lower flange 15a are bent at the edges of the upper wall 14 and the lower side wall 15, respectively, and are formed in a substantially U-shaped cross-section that is continuous in the longitudinal direction of the vehicle body.

インナパネル１６は、アウタパネル１２の外側壁１３と対向する内側壁１７と、この内側壁１７の上端縁及び下端縁からそれぞれ車体外方に折曲形成されて互いに対向する上側壁１８及び下側壁１９を有し、上側壁１８及び下側壁１９の端縁にそれぞれ上側フランジ１８ａ及び下側フランジ１９ａが折曲形成されて車体前後方向に連続して延在する断面略コ字状に形成されている。   The inner panel 16 includes an inner wall 17 that faces the outer wall 13 of the outer panel 12, and an upper wall 18 and a lower wall 19 that are bent outward from the upper and lower edges of the inner wall 17 to face each other. The upper flange 18a and the lower flange 19a are bent at the edges of the upper side wall 18 and the lower side wall 19, respectively, and are formed in a substantially U-shaped cross section extending continuously in the vehicle body front-rear direction. .

アウタパネル１２の上側壁１４と下側壁１５には、アウタパネル１２の前端縁１２ａの近傍にそれぞれ取付孔１４ｂと１５ｂが対向して穿設されている。同様に、インナパネル１６の上側壁１８と下側壁１９には、インナパネル１６の前端縁１６ａの近傍にそれぞれ取付孔１８ｂと１９ｂが対向して穿設されている。   Mounting holes 14b and 15b are formed in the upper wall 14 and the lower wall 15 of the outer panel 12 in the vicinity of the front edge 12a of the outer panel 12 so as to face each other. Similarly, mounting holes 18b and 19b are formed in the upper wall 18 and the lower wall 19 of the inner panel 16 in the vicinity of the front edge 16a of the inner panel 16 so as to face each other.

これらアウタパネル１２及びインナパネル１６の各上側フランジ１４ａと１８ａを溶接結合し、下側フランジ１５ａと１９ａを溶接結合することによって、図４に図２のＩ−Ｉ線断面図を示すように断面略矩形で車体前後方向に沿って連続する筒状で中空閉断面形状の後部フレーム部材１１が形成される。   The upper flanges 14a and 18a of the outer panel 12 and the inner panel 16 are joined by welding, and the lower flanges 15a and 19a are joined by welding, so that a cross-sectional view as shown in FIG. The rear frame member 11 is formed in a cylindrical shape that is rectangular and continuous in the longitudinal direction of the vehicle body and has a hollow closed cross-sectional shape.

一方、前部フレーム部材２１は、図２、図３及び図５に示すように、内側壁２２と外側壁２６とが対向し、内側壁２２の上端縁から車体外方に向かって斜め上方に折曲形成された上部傾斜側壁２３、上部傾斜側壁２３の上端縁から車体外方に折曲形成された上側壁２４、内側壁２２の下端縁から車体外方に向かって斜め下方に折曲形成された下部傾斜側壁２９、下部傾斜側壁２９の下端縁から車体外方に折曲形成された下側壁２８、外側壁２６の上端縁から車体内方に向かって斜め上方に折曲形成されて上側壁２４の外方端縁に連結する上部傾斜側壁２５、外側壁２６の下端縁から車体内方に向かって斜め下方に折曲形成されて下側壁２８の外方端縁に連続する下部傾斜側壁２７を有する断面略八角形で軸方向、即ち車体前後方向に沿って連続する閉断面形状に形成され、内部が隔壁３０に上下に区画されている。このような前部フレーム部材２１は、同一断面形状で直線状に連続することから、アルミニウム系材料が成形性に優れ、生産性に優れた押出成形によって容易に製造できる。更に、前部フレーム部材２１の後端縁２１ａの近傍において上部傾斜側壁２３、２５、下部傾斜側壁２７、２９にそれぞれ取付孔２３ｂ、２５ｂ、２７ｂ、２９ｂが形成されている。   On the other hand, as shown in FIGS. 2, 3 and 5, the front frame member 21 has the inner wall 22 and the outer wall 26 facing each other, and obliquely upward from the upper edge of the inner wall 22 toward the outside of the vehicle body. The upper inclined side wall 23 is bent, the upper side wall 24 is bent outward from the upper end edge of the upper inclined side wall 23, and the lower side edge of the inner side wall 22 is bent obliquely downward from the lower end edge toward the outer side of the vehicle body. The lower inclined side wall 29, the lower side wall 28 bent outward from the lower end edge of the lower inclined side wall 29, and the upper side edge bent upwardly from the upper end edge of the outer side wall 26 toward the inner side of the vehicle body. An upper inclined side wall 25 connected to the outer edge of the side wall 24, and a lower inclined side wall that is bent obliquely downward from the lower end edge of the outer wall 26 toward the inside of the vehicle body and continues to the outer edge of the lower side wall 28. 27 having a substantially octagonal cross section with 27 in the axial direction, that is, along the longitudinal direction of the vehicle body. It formed in closed cross section which, inside is partitioned into upper and lower partition wall 30. Since such a front frame member 21 is linearly continuous with the same cross-sectional shape, the aluminum-based material can be easily manufactured by extrusion molding with excellent moldability and excellent productivity. Furthermore, attachment holes 23b, 25b, 27b, and 29b are formed in the upper inclined side walls 23 and 25 and the lower inclined side walls 27 and 29 in the vicinity of the rear end edge 21a of the front frame member 21, respectively.

アダプタ３１は、図３乃至図６に示すように、加工性に優れかつ軽量なアルミニウム系材料からなるブロック状で、環状に連続するアウタパネル１２の前端縁１２ａ及びインナパネル１６の前端縁１６ａに周囲が対向する第１面３３と前部フレーム部材２１の後端縁２１ａに対向する第２面３４とが形成された平板状の基部３２を有し、この基部３２の第１面３３に後部フレーム１１の前端部分内に挿入して嵌合する後部フレーム結合部３５が突設され、第２面３４に前部フレーム２１の後端部分内に挿入して嵌合する前部フレーム結合部４５が突設されている。   As shown in FIGS. 3 to 6, the adapter 31 is a block made of an aluminum-based material that is excellent in workability and lightweight, and is surrounded by the front end edge 12 a of the outer panel 12 and the front end edge 16 a of the inner panel 16 that are annularly continuous. Has a flat plate-like base portion 32 formed with a first surface 33 opposed to and a second surface 34 opposed to the rear end edge 21a of the front frame member 21, and the rear frame is formed on the first surface 33 of the base portion 32. A rear frame coupling portion 35 that is inserted into and fitted into the front end portion of 11 is projected, and a front frame coupling portion 45 that is inserted and fitted into the rear end portion of the front frame 21 on the second surface 34 is provided. Projected.

後部フレーム結合部３５は、図３、図４、図６等に示すように、後部フレーム部材１１を形成するアウタパネル１２の外側壁１３、インナパネル１６の内側壁１７、アウタパネル１２及びインナパネル１６の各上側壁１４と１８、アウタパネル１２及びインナパネル１６の各下側壁１５と１９の各内面にそれぞれ対向する外側面３６、内側面３７、上側面３８、下側面３９を有して後部フレーム部材１１内に嵌合する断面矩形状で基部３２の第１面３３に突設形成されている。   As shown in FIGS. 3, 4, 6, and the like, the rear frame coupling portion 35 includes an outer wall 13 of the outer panel 12 that forms the rear frame member 11, an inner wall 17 of the inner panel 16, an outer panel 12, and an inner panel 16. The rear frame member 11 has an outer side surface 36, an inner side surface 37, an upper side surface 38, and a lower side surface 39 that face the inner surfaces of the upper side walls 14 and 18, and the lower side walls 15 and 19 of the outer panel 12 and the inner panel 16, respectively. The first surface 33 of the base portion 32 is formed so as to project in a rectangular shape that fits inside.

更に、後部フレーム結合部３５には、アウタパネル１２の上側壁１４及び下側壁１５に対向して穿設された取付孔１４ｂ及び１５ｂに対応して上面部３８と下側面４０に端部が開口して上下方向に貫通するボルト挿通孔４１が穿設され、更にインナパネル１６の上側壁１８及び下側壁１９に対向して穿設された取付孔１８ｂ及び１９ｂに対応して上面部３８と下側面３９に端部が開口して上下方向に貫通するボルト挿通孔４２が穿設されている。   Further, the rear frame connecting portion 35 has ends on the upper surface portion 38 and the lower side surface 40 corresponding to the mounting holes 14b and 15b formed so as to face the upper wall 14 and the lower wall 15 of the outer panel 12. A bolt insertion hole 41 penetrating in the vertical direction is drilled, and an upper surface portion 38 and a lower side surface corresponding to the mounting holes 18b and 19b drilled facing the upper wall 18 and the lower wall 19 of the inner panel 16, respectively. A bolt insertion hole 42 that has an end opened to 39 and penetrates in the vertical direction is formed.

前部フレーム結合部４５は、図３、図５、図６に示すように、基部３２の第２面３４に突設されて前部フレーム部材２１の中空部に挿入して上側壁２４及び両上部傾斜側壁２３、２５の内面に側面が当接する上部結合部４６と、下側壁２６及び両下部傾斜壁２７、２９の内面に側面が当接する下部結合部４７を有し、上部結合部４６には上部傾斜壁２３、２５に穿設された取付孔２３ｂ、２５ｂに対応するネジ穴４６ｂ、４６ｂが形成され、下部結合部４７には下部傾斜壁２７、２９に穿設された取付孔２７ｂ、２９ｂに対応するネジ穴４７ｂ、４７ｂが形成されている。   As shown in FIGS. 3, 5, and 6, the front frame coupling portion 45 protrudes from the second surface 34 of the base portion 32 and is inserted into the hollow portion of the front frame member 21, so The upper coupling portion 46 has side surfaces that abut the inner surfaces of the upper inclined side walls 23 and 25, and the lower coupling portion 46 has side surfaces that abut the inner surfaces of the lower side wall 26 and the lower inclined walls 27 and 29. Are formed with screw holes 46b, 46b corresponding to mounting holes 23b, 25b drilled in the upper inclined walls 23, 25, and mounting holes 27b drilled in the lower inclined walls 27, 29 in the lower coupling portion 47, respectively. Screw holes 47b and 47b corresponding to 29b are formed.

このように形成されたアダプタ３１は、異種金属材料によって形成された後部フレーム部材１１と接触することによるイオン化傾向の相違による電食の発生を抑制するために、表面に絶縁被膜を形成する耐電食処理が施されている。   The adapter 31 formed in this way has an electric corrosion resistance that forms an insulating coating on the surface in order to suppress the occurrence of electrolytic corrosion due to the difference in ionization tendency due to contact with the rear frame member 11 formed of a dissimilar metal material. Processing has been applied.

エンジンマウント５１は、インナパネル１６の上側壁１８上に当接すると共に取付孔１８ｂに対応する取付孔５３ｂが穿設された取付部５３の後端に支持部５４が上方に折曲形成されたＬ字状の取付ブラケット５２と、支持部５４に基端が支持されて車体後方に向かって延設されたアーム５５と、アーム５５に取り付けられたダンパ５６を有し、ダンパ５６に設けられたステー５７の先端がエンジンルームＥ内に搭載されたパワーユニットに連結される。   The engine mount 51 is in contact with the upper wall 18 of the inner panel 16 and has a support portion 54 bent upward at the rear end of the mounting portion 53 in which a mounting hole 53b corresponding to the mounting hole 18b is formed. A bracket provided with a letter-shaped mounting bracket 52, an arm 55 supported at the base end by the support portion 54 and extending toward the rear of the vehicle body, and a damper 56 attached to the arm 55. The front end of 57 is connected to a power unit mounted in the engine room E.

次に、このように形成されたアウタパネル１２、インナパネル１６、前部フレーム部材２１、アダプタ３１及びエンジンマウント５１の結合状態を説明する。   Next, a combined state of the outer panel 12, the inner panel 16, the front frame member 21, the adapter 31, and the engine mount 51 formed as described above will be described.

対向するアウタパネル１２及びインナパネル１６の上側フランジ１４ａと１８ａを溶接結合し、かつ下側フランジ１５ａと１９ａを溶接結合して閉断面形状の後部フレーム部材１１が形成される。この後部フレーム部材１１の中空部内にアダプタ３１の基部３２に突設された後部フレーム結合部４５が嵌入して、基部３２の第１面３３がアウタパネル１２の前端縁１２ａ及びインナパネル１６の前端縁１６ａに対向して当接すると共に後部フレーム結合部３５の外側面３６、内側面３７、上側面３８、下側面３９がそれぞれアウタパネル１２の外側壁１３、インナパネル１６の内側壁１７、アウタパネル１２及びインナパネル１６の各上側壁１４と１８、アウタパネル１２及びインナパネル１６の各下側壁１５と１９に対向した状態で嵌合して後部フレーム部材１１の前端部分を閉鎖している。   The upper flanges 14a and 18a of the opposed outer panel 12 and inner panel 16 are welded together, and the lower flanges 15a and 19a are welded together to form the rear frame member 11 having a closed cross-sectional shape. The rear frame coupling portion 45 protruding from the base portion 32 of the adapter 31 is fitted into the hollow portion of the rear frame member 11 so that the first surface 33 of the base portion 32 is the front edge 12 a of the outer panel 12 and the front edge of the inner panel 16. 16a, the outer side surface 36, the inner side surface 37, the upper side surface 38, and the lower side surface 39 of the rear frame coupling portion 35 are the outer wall 13 of the outer panel 12, the inner side wall 17 of the inner panel 16, the outer panel 12 and the inner surface, respectively. The front frames 14 and 18 of the panel 16 and the lower walls 15 and 19 of the outer panel 12 and the inner panel 16 are fitted to face each other to close the front end portion of the rear frame member 11.

後部フレーム部材１１の中空部内にアダプタ３１の後部フレーム結合部３５が嵌合して互いに位置決めされたアダプタ３１の後部フレーム結合部３５に穿設されたボルト挿通孔４１及びアウタパネル１２の上側壁１４及び下側壁１５に穿設された取付孔１４ｂ及び１５ｂに、上側壁１４の取付孔１４ｂ側から挿入されて貫通するボルト６１がナット６２と螺合してアダプタ３１の後部フレーム結合部３５、アウタパネル１２の上側壁１４及び下壁部１４が共に締結される。一方、インナパネル１６の上側壁１８上に取付ブラケット５２の取付部５３が位置決めして配置され、取付ブラケット５２の取付孔５３ｂ側から挿入されて後部フレーム結合部３５に穿設されたボルト挿通孔４２及びインナパネル１６の上側壁１８及び下側壁１９に穿設された取付孔１８ｂ及び１９ｂを貫通するボルト６１がナット６２と螺合して取付ブラケット５２の取付部５３、インナパネル１６の上側壁１８、下側壁１９、アダプタ３１の後部フレーム結合部３５が共に締結される。   The rear frame coupling portion 35 of the adapter 31 is fitted into the hollow portion of the rear frame member 11 and positioned in the rear frame coupling portion 35 of the adapter 31, and the upper side wall 14 of the outer panel 12. Bolts 61 inserted through the mounting holes 14b and 15b formed in the lower side wall 15 from the side of the mounting hole 14b of the upper side wall 14 are screwed into the nuts 62 and screwed with the nuts 62. The upper wall 14 and the lower wall 14 are fastened together. On the other hand, the mounting portion 53 of the mounting bracket 52 is positioned and arranged on the upper side wall 18 of the inner panel 16 and is inserted from the mounting hole 53 b side of the mounting bracket 52 and is drilled in the rear frame coupling portion 35. 42 and the bolt 61 which penetrates the mounting holes 18b and 19b drilled in the upper wall 18 and the lower wall 19 of the inner panel 16 are screwed into the nut 62, and the mounting portion 53 of the mounting bracket 52, the upper wall of the inner panel 16 18, the lower side wall 19 and the rear frame coupling portion 35 of the adapter 31 are fastened together.

後部フレーム部材１１の前端部分に取り付けられたアダプタ３１の前部フレーム結合部４５の上部結合部４６及び下部結合部４７がそれぞれ前部フレーム部材２１の空間部に嵌合し、前部フレーム部材２１の端縁２１ａをアダプタ３１に形成された基部３２の第２面３４に当接した状態で、前部フレーム部材２１の上側壁２４及び両上部傾斜壁２３、２５の内面に上部結合部４６の側面が当接し、かつ取付孔２３ｂ、２５ｂから挿入してネジ穴４６ｂ、４６ｂに螺合するボルト６３によって前部フレーム２１の両上部傾斜壁２３、２５と上部結合部４６が結合し、同様に、前部フレーム部材２１の下側壁２８及び両下部傾斜壁２７、２９の内面に下部結合部４７の側面が当接し、取付孔２７ｂ、２９ｂから挿入してネジ穴４７ｂ、４７ｂに螺合するボルト６３によって両下部傾斜壁２７、２９と下部結合部４７が結合して後部フレーム部材１１と同軸上に前部フレーム部材２１が配置され、前部フレーム部材２１の後端部分がアダプタ３１に結合される。   The upper coupling portion 46 and the lower coupling portion 47 of the front frame coupling portion 45 of the adapter 31 attached to the front end portion of the rear frame member 11 are fitted into the space portion of the front frame member 21, respectively. With the end edge 21 a of the upper frame 24 in contact with the second surface 34 of the base 32 formed on the adapter 31, the upper coupling portion 46 is formed on the inner surfaces of the upper side wall 24 and the upper inclined walls 23, 25 of the front frame member 21. Both upper inclined walls 23 and 25 of the front frame 21 are coupled to the upper coupling portion 46 by bolts 63 whose side surfaces abut and are inserted from the mounting holes 23b and 25b and screwed into the screw holes 46b and 46b. The side surfaces of the lower coupling portion 47 abut against the inner surfaces of the lower side wall 28 and the lower inclined walls 27, 29 of the front frame member 21, and are inserted from the mounting holes 27b, 29b and screwed into the screw holes 47b, 47b. The lower inclined walls 27 and 29 and the lower coupling portion 47 are coupled to each other by the bolt 63 to be arranged, and the front frame member 21 is arranged coaxially with the rear frame member 11, and the rear end portion of the front frame member 21 is connected to the adapter 31. Combined.

このように形成されたフロントサイドフレーム１０は、剛性に優れた鉄系材料によって形成されたアウタパネル１２及びインナパネル１６の上側フランジ１４ａと１８ａ及び下側フランジ１５ａと１９ａが溶接結合されて閉断面形状に形成された後部フレーム部材１１の前端部分に、ブロック状で剛性を有するアダプタ３１の基部３２に突設された後部フレーム結合部３５が嵌合して後部フレーム１１の前部を閉鎖し、かつこの嵌合状態でボルト６１によって後部フレーム結合部３５とアウタパネル１２及び後部フレーム結合部４５とインナパネル１６を共に締結することによって閉断面形状に形成された後部フレーム部材１１の前端部分の変形が拘束されて、後部フレーム部材１１全体が車体の骨格構造として十分な強度及び剛性が確保される。   The front side frame 10 thus formed has a closed cross-sectional shape by welding the upper flanges 14a and 18a and the lower flanges 15a and 19a of the outer panel 12 and the inner panel 16 formed of a ferrous material having excellent rigidity. A rear frame coupling portion 35 projecting from a base portion 32 of a block-like and rigid adapter 31 is fitted to the front end portion of the rear frame member 11 formed in the above-described manner, and the front portion of the rear frame 11 is closed; and In this fitted state, the rear frame coupling portion 35 and the outer panel 12 and the rear frame coupling portion 45 and the inner panel 16 are fastened together by bolts 61 to restrain deformation of the front end portion of the rear frame member 11 formed in a closed cross-sectional shape. Thus, the entire rear frame member 11 has sufficient strength and rigidity as the skeleton structure of the vehicle body. That.

この剛性が確保された筒状の後部フレーム１１を形成するアウタパネル１２の前端縁１２ａ及びインナパネル１６の前端縁１３ａと、軸圧壊変形による衝撃エネルギ吸収に優れたアルミニウム系材料によって断面八角形の筒状に形成された前部フレーム部材２１の後端縁２１ａとが、板状に形成されたアダプタ２１の基部３２を介在して対向し、かつ前部フレーム部材２１と後部フレーム部材１１が同軸上に配置されて車体前方方向から前部フレーム部材２１に入力される衝撃荷重Ｐを前部フレーム部材２１の後端縁２１ａからアダプタ３１の基部３２を介して後部フレーム部材１１に確実に伝達でき、剛性が確保された後部フレーム部材１１によって強固に受け止めることができる。   A cylinder with an octagonal cross section made of an aluminum-based material excellent in impact energy absorption due to axial crushing deformation and the front end edge 12a of the outer panel 12 and the front end edge 13a of the inner panel 16 that form the cylindrical rear frame 11 in which the rigidity is secured. A rear end edge 21a of the front frame member 21 formed in a shape is opposed to each other with a base portion 32 of the adapter 21 formed in a plate shape, and the front frame member 21 and the rear frame member 11 are coaxial. The impact load P input to the front frame member 21 from the front direction of the vehicle body can be reliably transmitted from the rear edge 21a of the front frame member 21 to the rear frame member 11 via the base 32 of the adapter 31, The rear frame member 11 whose rigidity is ensured can be firmly received.

更に、エンジンマウント５１を後部フレーム１１の前端部分に取り付けることから、エンジンマウント５１の取り付けに影響されることなく前部フレーム２１２１の全長に亘って軸圧壊変形範囲が確保でき、前部フレーム部材２１の全長範囲による軸圧壊変形により衝撃エネルギの吸収が可能になり衝撃荷重Ｐによる乗員への衝撃が十分に緩和でき、乗員の安全性が確保できる。   Furthermore, since the engine mount 51 is attached to the front end portion of the rear frame 11, the axial crushing deformation range can be secured over the entire length of the front frame 2121 without being affected by the attachment of the engine mount 51, and the front frame member 21. The impact energy can be absorbed by the axial crushing deformation in the entire length range, and the impact on the occupant due to the impact load P can be sufficiently mitigated, and the safety of the occupant can be ensured.

また、剛性が確保された後部フレーム部材１１と、この後部フレーム部材１１に嵌合して固定されたアダプタ３１とにボルト６１及びナット６２によってエンジンマウント５１の取付ブラケット５２が共締めされて強固に固定されてエンジンマウント５１の支持剛性が確保できる。エンジンマウント５１の支持剛性の向上によってエンジンルームＥ内に搭載されたエンジン等のパワーユニットからフロントフレーム１０への振動伝達がダンパ５６によって効率的に低減でき、エンジンマウント５１の機能が確保できて車両の静粛性及び乗り心地が向上する。   In addition, the mounting bracket 52 of the engine mount 51 is fastened together by the bolt 61 and the nut 62 to the rear frame member 11 in which rigidity is secured and the adapter 31 fitted and fixed to the rear frame member 11 to be strong. The support rigidity of the engine mount 51 can be secured by being fixed. By improving the support rigidity of the engine mount 51, vibration transmission from a power unit such as an engine mounted in the engine room E to the front frame 10 can be efficiently reduced by the damper 56, and the function of the engine mount 51 can be ensured. Silence and ride comfort are improved.

更に、アウタパネル１２の上側壁１４及び下側壁１５に穿設された取付孔１４ｂ及び１５ｂ及びアダプタ３１の後部フレーム結合部３５に穿設されたボルト挿通孔４１を貫通するボルト６１及びナット６２によってアダプタ３１の第１フレーム結合部３５、アウタパネル１２の上側壁１４及び下壁部１４を共に締結し、かつ取付ブラケット５２の取付孔５３ｂと、インナパネル１６の上側壁１８及び下側壁１９に穿設された取付孔１８ｂ、１９ｂ、及びアダプタ３１の第１フレーム結合部３５に穿設されたボルト挿通孔４２を貫通するボルト６１及びナット６２によってアダプタ３１の後部フレーム結合部３５、インナパネル１６の上側壁１８及び下側壁１９、エンジンマウント５１の取付ブラケット５２を共に締結するように構成することによって、ボルト６１及びナット６２等の締結具の削減及び締結具の削減に伴う構造の簡素化が得られ、また、エンジンマウント５１を取り付けるための取付具が不要になり、かつアダプタ３１のボルト挿通孔４１、４２にネジ部を形成する必要がなくアダプタ３１の構造の簡素化が可能になり製造コストの抑制が期待できる。   Further, the adapter is provided by bolts 61 and nuts 62 that pass through the mounting holes 14b and 15b formed in the upper wall 14 and the lower wall 15 of the outer panel 12 and the bolt insertion hole 41 formed in the rear frame coupling portion 35 of the adapter 31. 31, the first frame coupling portion 35, the upper side wall 14 and the lower wall portion 14 of the outer panel 12 are fastened together, and are drilled in the mounting hole 53 b of the mounting bracket 52 and the upper side wall 18 and the lower side wall 19 of the inner panel 16. The rear frame coupling portion 35 of the adapter 31 and the upper side wall of the inner panel 16 by bolts 61 and nuts 62 penetrating through the bolt insertion holes 42 drilled in the first frame coupling portion 35 of the adapter 31. 18, the lower wall 19, and the mounting bracket 52 of the engine mount 51 are configured to be fastened together. Therefore, it is possible to reduce the number of fasteners such as bolts 61 and nuts 62 and to simplify the structure associated with the reduction of the fasteners, and to eliminate the need for a fixture for mounting the engine mount 51, and to insert the adapter 31 into the bolt. Since it is not necessary to form screw parts in the holes 41 and 42, the structure of the adapter 31 can be simplified, and a reduction in manufacturing cost can be expected.

なお、上記実施の形態では、後部フレーム部材１１の前部部分にエンジンマウント５１を取り付けたが、エンジンマウント５１に代えて艤装部材としてフロントサイドフレーム１０間に架設されるサスペンションクロスメンバ５８を取り付けることもできる。このサスペンションクロスメンバ５８の取り付けは、図７に図４に対応する断面図を示し、対応する部分に同一符号を付すことで詳細な説明を省略するが、インナパネル１６の下側壁１９に下方よりサスペンションクロスメンバ５８の端部を位置決め当接し、インナパネル１６の上側壁１８に穿設された取付孔１８ｂからボルト６１を挿入し、アダプタ３１の後部フレーム結合部３５のボルト挿通孔４２、インナパネル１６の下側壁１９に穿設された取付孔１９ｂ及びサスペンションクロスメンバ５８の取付孔５８ｂを貫通させ、ナット６２と螺合させることにより、インナパネル１６の上側壁１８、アダプタ３１の第１フレーム結合部３５、インナパネル１６の下側壁１９及びサスペンションクロスメンバ５８が共に締結されている。   In the above embodiment, the engine mount 51 is attached to the front portion of the rear frame member 11, but a suspension cross member 58 installed between the front side frames 10 is attached as a fitting member instead of the engine mount 51. You can also. The suspension cross member 58 is attached to the lower wall 19 of the inner panel 16 from below, although a cross-sectional view corresponding to FIG. 4 is shown in FIG. The end portion of the suspension cross member 58 is positioned and abutted, the bolt 61 is inserted from the mounting hole 18b drilled in the upper side wall 18 of the inner panel 16, the bolt insertion hole 42 of the rear frame coupling portion 35 of the adapter 31 and the inner panel. 16 is passed through the mounting hole 19b formed in the lower side wall 19 and the mounting hole 58b of the suspension cross member 58, and is screwed into the nut 62, thereby coupling the upper wall 18 of the inner panel 16 and the adapter 31 to the first frame. The portion 35, the lower side wall 19 of the inner panel 16, and the suspension cross member 58 are fastened together.

よって、剛性が確保された後部フレーム部材１１と、この後部フレーム部材１１に嵌合して固定されたアダプタ３１とにボルト６１及びナット６２によってサスペンションクロスメンバ５８が共締めされて強固に固定されて、フロントサイドフレーム１０とサスペンションクロスメンバ５８との結合剛性が確保できる。   Therefore, the suspension cross member 58 is fastened together by the bolt 61 and the nut 62 and firmly fixed to the rear frame member 11 in which rigidity is secured and the adapter 31 fitted and fixed to the rear frame member 11. The coupling rigidity between the front side frame 10 and the suspension cross member 58 can be ensured.

このサスペンションクロスメンバ５８の支持剛性の向上により、サスペンションクロスメンバ５８に支持されたサスペンションを介して入力されるロードノイズ等のタイヤからの振動入力が低減して車両の静粛性が向上すると共に乗り心地の向上が得られる。   By improving the support rigidity of the suspension cross member 58, the vibration input from the tire such as road noise input through the suspension supported by the suspension cross member 58 is reduced, so that the quietness of the vehicle is improved and the ride comfort is improved. Improvement is obtained.

また、タイダウンフック５９を後部フレーム部材１１の前端部分に結合することもできる。このタイダウンフック５９の結合は、図８に図４に対応する断面図を示し、対応する部分に同一符号を付すことで詳細な説明を省略するが、アウタパネル１２の外側壁１３に一対の取付孔１３ｂを穿設し、インナパネル１６の内側壁１７に取付孔１３ｂと対向する取付孔１７ｂを穿設すると共に、アダプタ３１の後部フレーム結合部３５に各取付孔１３ｂ及び１７ｂに対応して外側面３６と内側面３７に開口して貫通するボルト挿入孔４１ａ及び４２ａを形成し、インナパネル１６の内側壁１７にタイダウンフック５９を当接して位置決めし、アウタパネル１２の外側壁１３に穿設された各取付孔１３ｂからボルト６１ａを挿入し、アダプタ３１の第１フレーム結合部３５に穿設されたボルト挿通孔４１ａ、４２ａ及びインナパネル１６の内側壁１７に穿設された各取付孔１７ｂ、１７ｂ及びタイダウンフック５９の各取付孔５９ｂを貫通させ、ナット６２ａと螺合させることにより、アウタパネル１２の外側壁１３、アダプタ３１の後部フレーム結合部３５、インナパネル１６の上側壁１７及びタイダウンフック５９が共に締結されている。   Further, the tie-down hook 59 can be coupled to the front end portion of the rear frame member 11. FIG. 8 is a cross-sectional view corresponding to FIG. 4 and the corresponding parts are denoted by the same reference numerals, and detailed description thereof is omitted, but a pair of tie-down hooks 59 are attached to the outer wall 13 of the outer panel 12. A hole 13b is drilled, a mounting hole 17b opposite to the mounting hole 13b is drilled in the inner wall 17 of the inner panel 16, and a rear frame coupling portion 35 of the adapter 31 is provided corresponding to each mounting hole 13b and 17b. Bolt insertion holes 41a and 42a are formed in the side surface 36 and the inner side surface 37 so as to pass through. The tie-down hooks 59 are positioned in contact with the inner wall surface 17 of the inner panel 16 and are formed in the outer wall 13 of the outer panel 12. Bolts 61a are inserted through the respective mounting holes 13b, and the bolt insertion holes 41a and 42a formed in the first frame coupling portion 35 of the adapter 31 and the inner panel 16 By passing through the mounting holes 17b, 17b drilled in the wall 17 and the mounting holes 59b of the tie-down hook 59 and screwing with the nut 62a, the outer wall 13 of the outer panel 12 and the rear frame coupling portion of the adapter 31 35, the upper side wall 17 of the inner panel 16 and the tie-down hook 59 are fastened together.

よって、剛性が確保された後部フレーム部材１１を形成するアウタパネル１２及びインナパネル１６と、この後部フレーム部材１１に嵌合して固定されたアダプタ３１とに一対のボルト６１ａ及びナット６２ａによってタイダウンフック５９が共締めされて強固に固定されてフロントサイドフレーム１０とタイダウンフック５９との結合剛性が確保できる。   Therefore, a tie-down hook is formed by a pair of bolts 61a and nuts 62a on the outer panel 12 and the inner panel 16 forming the rear frame member 11 with which rigidity is secured, and the adapter 31 fitted and fixed to the rear frame member 11. 59 is fastened together and firmly fixed, so that the coupling rigidity between the front side frame 10 and the tie-down hook 59 can be secured.

なお、本発明は上記実施の形態に限定されることなく、発明の趣旨を逸脱しない範囲で種々変更可能である。例えば、上記実施の形態では前部フレーム部材２１を断面八角形で軸方向に連続するアルミニウム系材料によって形成したが、断面八角形に限定されることなく六角形等の他の断面形状に構成することもでき、またアルミニウム系材料に代えて鉄系材料など適宜変更することもできる。ただし、好ましくは軽量で衝撃エネルギ吸収に優れたアルミニウム系材料を適用した方がよい。また、後部フレーム部材１１の断面形状は矩形に限定されることなく六角形や八角形等他の閉断面形状に形成することができる。更に、後部フレーム部材１１の前端部分に結合される艤装部材はエンジンマウント５１やサスペンションクロスメンバ５８、タイダウンフック５９等に限定されることなく他の艤装部材に代えることができる。   In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention. For example, in the above embodiment, the front frame member 21 is formed of an aluminum-based material having an octagonal cross section and continuous in the axial direction. However, the front frame member 21 is not limited to the octagonal cross section and is configured to have another cross sectional shape such as a hexagon. Moreover, it can replace with an aluminum-type material, and can also change suitably an iron-type material. However, it is preferable to apply an aluminum-based material that is lightweight and excellent in absorbing impact energy. Further, the cross-sectional shape of the rear frame member 11 is not limited to a rectangular shape, and can be formed in other closed cross-sectional shapes such as a hexagonal shape and an octagonal shape. Furthermore, the outfitting member coupled to the front end portion of the rear frame member 11 is not limited to the engine mount 51, the suspension cross member 58, the tie-down hook 59, and the like, and can be replaced with another outfitting member.

本発明における車体フレーム構造の実施の形態の概要を示す自動車の車体前部の斜視図である。1 is a perspective view of a front part of a vehicle body showing an outline of an embodiment of a vehicle body frame structure according to the present invention. 図１のＡ部拡大図である。It is the A section enlarged view of FIG. 図２の分解斜視図である。FIG. 3 is an exploded perspective view of FIG. 2. 図２のＩ−Ｉ線断面図である。It is the II sectional view taken on the line of FIG. 図２のＩＩ−ＩＩ線断面図である。It is the II-II sectional view taken on the line of FIG. アダプタの説明図である。It is explanatory drawing of an adapter. 他の実施の形態の概要を示す断面図である。It is sectional drawing which shows the outline | summary of other embodiment. 更に、他の実施の形態の概要を示す断面図である。Furthermore, it is sectional drawing which shows the outline | summary of other embodiment. 従来の車体フレームの概要を示す分解斜視図である。It is a disassembled perspective view which shows the outline | summary of the conventional vehicle body frame.

符号の説明Explanation of symbols

１ 車体
１０ フロントサイドフレーム（車体フレーム）
１１ 後部フレーム部材
１２ アウタパネル
１２ａ 端縁
１３ 外側壁
１４ 上側壁
１４ｂ 取付孔
１５ 下側壁
１５ｂ 取付孔
１６ インナパネル
１６ａ 端縁
１７ 内側壁
１７ｂ 取付孔
１８ 上側壁
１９ 下側壁
１９ｂ 取付孔
２１ 前部フレーム部材
３１ アダプタ
３２ 基部
３３ 第１面
３４ 第２面
３５ 後部フレーム結合部
３６ 外側面
３７ 内側面
３８ 上側面
３９ 下側面
４１、４２ ボルト挿通孔
４１ａ、４２ａ ボルト挿通孔
４５ 前部フレーム結合部
５１ エンジンマウント（艤装部材）
５８ サスペンションクロスメンバ（艤装部材）
５８ｂ 取付孔
５９ タイダウンフック（艤装部材）
５９ｂ 取付孔
６１ ボルト
６１ａ ボルト
６２ ナット
６２ａ ナット 1 Body 10 Front side frame (body frame)
11 Rear frame member 12 Outer panel 12a Edge edge 13 Outer side wall 14 Upper side wall 14b Mounting hole 15 Lower side wall 15b Mounting hole 16 Inner panel 16a Edge edge 17 Inner side wall 17b Mounting hole 18 Upper side wall 19 Lower side wall 19b Mounting hole 21 Front frame member 31 Adapter 32 Base 33 First surface 34 Second surface 35 Rear frame coupling portion 36 Outer side surface 37 Inner side surface 38 Upper side surface 39 Lower side surface 41, 42 Bolt insertion hole 41a, 42a Bolt insertion hole 45 Front frame coupling portion 51 Engine mount (Fitting material)
58 Suspension cross member (fitting member)
58b Mounting hole 59 Tie-down hook (fitting member)
59b Mounting hole 61 Bolt 61a Bolt 62 Nut 62a Nut

Claims (6)

車体前後方向に沿って延在する後部フレーム部材と、該後部フレーム部材に連結されて車体前方から入力される衝撃荷重によって潰れ変形して衝撃エネルギを吸収する前部フレーム部材とを備えた車体フレーム構造において、
筒状の閉断面形状で車体前後方向に沿って延在する後部フレーム部材と、
該後部フレーム部材と同軸上に配置された中空閉断面形状の前部フレーム部材と、
対向配置された上記後部フレーム部材と前部フレーム部材との間に介在して後部フレーム部材の前端縁に対向する第１面及び前部フレーム部材の後端縁と対向する第２面を有する板状の基部と、該基部の第１面から突出して後部フレーム部材の前端部分内に嵌合する後部フレーム結合部と、第２面に設けられて上記前部フレーム部材の後端部分が結合される前部フレーム結合部を有するブロック状のアダプタと、
艤装部材とを有し、
上記後部フレーム部材内に嵌合する後部フレーム結合部と後部フレーム部材と上記艤装部材とを共にボルト結合したことを特徴とする車体フレーム構造。 A vehicle body frame including a rear frame member extending along the longitudinal direction of the vehicle body and a front frame member coupled to the rear frame member and crushed and deformed by an impact load input from the front of the vehicle body to absorb impact energy. In structure
A rear frame member extending along the longitudinal direction of the vehicle body in a cylindrical closed cross-sectional shape;
A front frame member having a hollow closed cross-sectional shape disposed coaxially with the rear frame member;
A plate having a first surface interposed between the rear frame member and the front frame member disposed so as to face each other and facing the front edge of the rear frame member, and a second surface facing the rear edge of the front frame member And a rear frame coupling portion protruding from the first surface of the base portion and fitting into a front end portion of the rear frame member, and a rear end portion of the front frame member provided on the second surface. A block-shaped adapter having a front frame coupling portion;
Having a rigging member,
A vehicle body frame structure characterized in that a rear frame coupling portion, a rear frame member, and a fitting member that are fitted into the rear frame member are bolted together. 上記前部フレーム部材は、アルミニウム系材料で形成され、
後部フレーム部材は、鉄系材料で形成されたことを特徴とする請求項１に記載の車体フレーム構造。 The front frame member is formed of an aluminum-based material,
The body frame structure according to claim 1, wherein the rear frame member is formed of an iron-based material. 上記アダプタは、アルミニウム系材料で形成されると共に表面に絶縁被膜を形成する耐電食処理が施されたことを特徴とする請求項２に記載の車体フレーム構造。   3. The vehicle body frame structure according to claim 2, wherein the adapter is formed of an aluminum-based material and is subjected to an anti-corrosion treatment for forming an insulating film on the surface. 上記後部フレーム部材は、
車体前後方向に連続する断面多角形状であって、
上記アダプタは、
上記第１面が後部フレーム部材の前端縁に対向すると共に、後部フレーム結合部が上記後部フレームの前端部分に端合する断面多角形状であり、
上記後部フレーム部材内に嵌合する後部フレーム結合部と後部フレーム部材と上記艤装部材とを共にボルト結合したことを特徴とする請求項１〜３のいずれかに記載の車体フレーム構造。 The rear frame member is
The cross-sectional polygonal shape is continuous in the longitudinal direction of the vehicle body,
The adapter is
The first surface is opposed to the front edge of the rear frame member, and the rear frame coupling portion has a polygonal cross-section that meets the front end portion of the rear frame,
The vehicle body frame structure according to any one of claims 1 to 3, wherein a rear frame coupling portion, a rear frame member, and the fitting member that are fitted into the rear frame member are bolted together. 上記後部フレーム部材は、
互いに対向する外側壁及び内側壁と、上記外側壁と内側壁のそれぞれの上端縁間及び下端縁間をそれぞれ連結する上側壁及び下側壁とによって車体前後方向に連続形成された矩形断面形状であって、
上記アダプタは、
上記基部の第１面が後部フレーム部材の前端縁に対向すると共に、後部フレーム結合部が上記後部フレーム部材の外側壁、内側壁、上側壁、下側壁のそれぞれ内面に対向する外側面、内側面、上側面、下側面を有して後部フレーム部材内に嵌合する断面矩形状でかつ上側面から下側面に貫通するボルト挿通孔を有し、
上記艤装品が上記アダプタの後部フレーム結合部に穿設されたボルト挿通孔及び後部フレーム部材の上側壁と下側壁に対向して穿設されたそれぞれの取付孔を貫通してナットと螺合するボルトによってアダプタの後部フレーム結合部及び上側壁と下側壁と共に締結されたことを特徴とする請求項１〜４のいずれかに記載の車体フレーム構造。 The rear frame member is
It has a rectangular cross-sectional shape continuously formed in the longitudinal direction of the vehicle body by an outer wall and an inner wall facing each other, and an upper wall and a lower wall that respectively connect the upper and lower edges of the outer wall and the inner wall. And
The adapter is
The first surface of the base portion faces the front end edge of the rear frame member, and the rear frame coupling portion faces the inner surfaces of the outer wall, inner wall, upper wall, and lower wall of the rear frame member. The upper and lower sides have a rectangular cross section that fits into the rear frame member and has a bolt insertion hole that penetrates from the upper side to the lower side;
The fitting is threaded into the nut through the bolt insertion hole formed in the rear frame coupling portion of the adapter and the respective attachment holes formed facing the upper and lower side walls of the rear frame member. The vehicle body frame structure according to any one of claims 1 to 4, wherein the vehicle body frame structure is fastened together with a rear frame coupling portion of the adapter and upper and lower side walls by bolts. 上記後部フレーム部材は、
互いに対向する外側壁及び内側壁と、上記外側壁と内側壁のそれぞれの上端縁間及び下端縁間をそれぞれ連結する上側壁及び下側壁とによって車体前後方向に連続形成された矩形断面形状であって、
上記アダプタは、
上記基部の第１面が後部フレーム部材の前端縁に対向すると共に、後部フレーム結合部が上記後部フレーム部材の外側壁、内側壁、上側壁、下側壁のそれぞれ内面に対向する外側面、内側面、上側面、下側面を有して後部フレーム部材内に嵌合する断面矩形状でかつ外側面から内側面に貫通するボルト挿通孔を有し、
上記艤装品が上記アダプタの後部フレーム結合部に穿設されたボルト挿通孔及び後部フレーム部材の外側壁と内側壁に対向して穿設されたそれぞれの取付孔を貫通してナットと螺合するボルトによってアダプタの後部フレーム結合部及び外側壁と内側壁と共に締結されたことを特徴とする請求項１〜４のいずれかに記載の車体フレーム構造。 The rear frame member is
It has a rectangular cross-sectional shape continuously formed in the longitudinal direction of the vehicle body by the outer and inner walls facing each other, and the upper and lower walls connecting the upper and lower edges of the outer and inner walls, respectively. And
The adapter is
The first surface of the base portion faces the front edge of the rear frame member, and the rear frame coupling portion faces the inner surface of the outer frame, inner wall, upper wall, and lower wall of the rear frame member. The upper side, the lower side has a rectangular cross section that fits into the rear frame member, and has a bolt insertion hole that penetrates from the outer side to the inner side,
The fitting is threaded into the nut through the bolt insertion hole formed in the rear frame coupling portion of the adapter and the mounting holes formed facing the outer wall and the inner wall of the rear frame member. The vehicle body frame structure according to any one of claims 1 to 4, wherein the vehicle body frame structure is fastened together with a rear frame coupling portion of the adapter and an outer wall and an inner wall by bolts.
JP2004168491A 2004-06-07 2004-06-07 Body frame structure Expired - Fee Related JP4384553B2 (en)

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Publication number Priority date Publication date Assignee Title
JP5001783B2 (en) * 2007-10-19 2012-08-15 トヨタ自動車株式会社 Shock absorber mounting structure
JP5589213B2 (en) 2012-01-13 2014-09-17 日信工業株式会社 Vehicle support structure

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