JP2005212503A - Car body lower part structure - Google Patents

Car body lower part structure Download PDF

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JP2005212503A
JP2005212503A JP2004018177A JP2004018177A JP2005212503A JP 2005212503 A JP2005212503 A JP 2005212503A JP 2004018177 A JP2004018177 A JP 2004018177A JP 2004018177 A JP2004018177 A JP 2004018177A JP 2005212503 A JP2005212503 A JP 2005212503A
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front side
floor
vehicle body
cross member
floor panel
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Osamu Shimazaki
修 島崎
Yoshiaki Nishimura
美明 西村
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To restrain deformation of a floor panel at the time of car body collision. <P>SOLUTION: A reinforcement 24 arranged in the inside of a front side member 12 arranged along the longitudinal direction of a car body and extended to a crossing part with a floor cross member 30 and the floor cross member 30 arranged along the car widthwise direction are fastened to each other with a floor panel 16 between them by a bolt 42 and a nut 44. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は車体下部構造に係り、特に、フロントサイドメンバの後部がフロアパネルに結合された自動車等の車体下部構造に関する。   The present invention relates to a vehicle body lower structure, and more particularly to a vehicle body lower structure of an automobile or the like in which a rear portion of a front side member is coupled to a floor panel.

従来、フロントサイドメンバの後部がフロアパネルに結合された自動車等の車体下部構造においては、フロントサイドメンバの内部にリインフォースメントを配設し、フロントサイドメンバの曲げ剛性を向上させた構成が知られている（例えば、特許文献１参照。）。
特開平７−１５６８３４号公報 Conventionally, in a lower body structure of an automobile or the like in which the rear part of a front side member is coupled to a floor panel, a configuration in which a reinforcement is provided inside the front side member to improve the bending rigidity of the front side member is known. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 7-156834

しかしながら、特許文献１では、車体が前突した際に、フロントサイドメンバに車体前方側から車体後方側に向って作用する荷重に対して車室フロアの強度が弱い。このため、車室フロアの強度を向上するため、フロアクロスメンバを配設し、このフロアクロスメンバとフロントサイドメンバとをフロアパネルを間に挟んで車体上下方向から溶接により結合する構成が考えられるが、溶接により結合した場合には、車体衝突時にフロアクロスメンバとフロントサイドメンバとの結合部に作用する剥離荷重に対して、結合強度が弱くなる。また、フロアパネルに溶接用の作業孔を形成する必要があるためフロアパネルの剛性も低下する。この結果、車体衝突時に溶接部が外れ、フロントサイドメンバとフロアクロスメンバとの枠組みが変形し、フロアパネルが変形し易い。   However, in Patent Document 1, when the vehicle body collides forward, the strength of the passenger compartment floor is weak against a load that acts on the front side member from the vehicle body front side toward the vehicle body rear side. For this reason, in order to improve the strength of the passenger compartment floor, a configuration is conceivable in which a floor cross member is disposed and the floor cross member and the front side member are joined by welding from above and below the vehicle body with the floor panel interposed therebetween. However, when coupled by welding, the coupling strength is weak against the peeling load that acts on the coupling portion between the floor cross member and the front side member at the time of a vehicle collision. Further, since it is necessary to form work holes for welding in the floor panel, the rigidity of the floor panel is also reduced. As a result, the welded part is detached at the time of a vehicle body collision, the framework of the front side member and the floor cross member is deformed, and the floor panel is easily deformed.

本発明は上記事実を考慮し、車体衝突時のフロアパネルの変形を抑制できる車体下部構造を得ることが目的である。   In view of the above facts, an object of the present invention is to obtain a vehicle body lower structure capable of suppressing deformation of a floor panel at the time of vehicle body collision.

請求項１記載の本発明の車体下部構造は、車体前後方向に沿って配設されたフロントサイドメンバと、
車幅方向に沿って配設されたフロアクロスメンバと、
を有し、前記フロントサイドメンバと前記フロアクロスメンバとの交差部を、フロアパネルを間に挟んでボルトとナットにより締結したことを特徴とする。 The vehicle body lower part structure of the present invention according to claim 1 includes a front side member disposed along the vehicle body longitudinal direction,
A floor cross member disposed along the vehicle width direction;
And an intersection of the front side member and the floor cross member is fastened with a bolt and a nut with a floor panel interposed therebetween.

従って、車体前後方向に沿って配設されたフロントサイドメンバと、車幅方向に沿って配設されたフロアクロスメンバとの交差部を、フロアパネルを間に挟んでボルトとナットにより締結したため、フロントサイドメンバとフロアクロスメンバとの結合部における剥離方向の強度を、溶接によりフロントサイドメンバとフロアクロスメンバとをフロアパネルを間に挟んで結合した場合の結合強度に比べて向上できる。また、フロアパネルに溶接用の作業孔を形成する必要もないため、作業孔を形成することによるフロアパネルの剛性低下も無い。この結果、車体衝突時にフロントサイドメンバとフロアクロスメンバとの枠組みの変形を抑制できる。このため、車体衝突時のフロアパネルの変形を抑制できる。   Therefore, because the intersection of the front side member arranged along the vehicle body longitudinal direction and the floor cross member arranged along the vehicle width direction is fastened with bolts and nuts with the floor panel in between, The strength in the peeling direction at the joint between the front side member and the floor cross member can be improved as compared with the joint strength when the front side member and the floor cross member are joined with the floor panel interposed therebetween by welding. Further, since it is not necessary to form work holes for welding in the floor panel, there is no reduction in the rigidity of the floor panel due to the formation of the work holes. As a result, it is possible to suppress the deformation of the frame between the front side member and the floor cross member during a vehicle body collision. For this reason, the deformation | transformation of the floor panel at the time of a vehicle body collision can be suppressed.

請求項２記載の本発明の車体下部構造は、車体前後方向に沿って配設されたフロントサイドメンバと、
車幅方向に沿って配設されたフロアクロスメンバと、
前記フロントサイドメンバ内に配設され前記フロアクロスメンバとの交差部まで延設された補強部材と、
を有し、前記補強部材と前記フロアクロスメンバとの交差部を、フロアパネルを間に挟んでボルトとナットにより締結したことを特徴とする。 The vehicle body lower part structure of the present invention according to claim 2 comprises a front side member disposed along the vehicle body longitudinal direction,
A floor cross member disposed along the vehicle width direction;
A reinforcing member disposed in the front side member and extending to the intersection with the floor cross member;
And an intersection of the reinforcing member and the floor cross member is fastened with a bolt and a nut with a floor panel interposed therebetween.

従って、車体前後方向に沿って配設されたフロントサイドメンバ内に配設されフロアクロスメンバとの交差部まで延設された補強部材と、車幅方向に沿って配設されたフロアクロスメンバとを、フロアパネルを間に挟んでボルトとナットにより締結したため、補強部材とフロアクロスメンバとの結合部における剥離方向の強度を、溶接により補強部材とフロアクロスメンバとをフロアパネルを間に挟んでを結合した場合の結合強度に比べて向上できる。また、フロアパネルに溶接用の作業孔を形成する必要もないため、作業孔を形成することによるフロアパネルの剛性低下も無い。この結果、車体衝突時にフロントサイドメンバとフロアクロスメンバとの枠組みの変形を抑制できる。このため、車体衝突時のフロアパネルの変形を抑制できる。   Therefore, a reinforcing member disposed in the front side member disposed along the vehicle body longitudinal direction and extending to the intersection with the floor cross member, a floor cross member disposed along the vehicle width direction, Since the floor panel is sandwiched between the bolts and nuts, the strength in the peeling direction at the joint between the reinforcing member and the floor cross member is determined by welding, and the reinforcing member and the floor cross member are sandwiched between the floor panel. The bond strength can be improved compared to the case of bonding. Further, since it is not necessary to form work holes for welding in the floor panel, there is no reduction in the rigidity of the floor panel due to the formation of the work holes. As a result, it is possible to suppress the deformation of the frame between the front side member and the floor cross member during a vehicle body collision. For this reason, the deformation | transformation of the floor panel at the time of a vehicle body collision can be suppressed.

請求項１記載の本発明の車体下部構造は、車体前後方向に沿って配設されたフロントサイドメンバと、車幅方向に沿って配設されたフロアクロスメンバと、を有し、フロントサイドメンバとフロアクロスメンバとの交差部を、フロアパネルを間に挟んでボルトとナットにより締結したため、車体衝突時のフロアパネルの変形を抑制できるという優れた効果を有する。   The vehicle body lower part structure according to the first aspect of the present invention includes a front side member disposed along the longitudinal direction of the vehicle body and a floor cross member disposed along the vehicle width direction. Since the intersection of the floor cross member and the floor cross member is fastened with bolts and nuts with the floor panel sandwiched therebetween, there is an excellent effect that deformation of the floor panel at the time of a vehicle body collision can be suppressed.

請求項２記載の本発明の車体下部構造は、車体前後方向に沿って配設されたフロントサイドメンバと、車幅方向に沿って配設されたフロアクロスメンバと、フロントサイドメンバ内に配設されフロアクロスメンバとの交差部まで延設された補強部材と、を有し、補強部材とフロアクロスメンバとの交差部を、フロアパネルを間に挟んでボルトとナットにより締結したため、車体衝突時のフロアパネルの変形を抑制できるという優れた効果を有する。   According to a second aspect of the present invention, the vehicle body lower structure of the present invention includes a front side member disposed along the longitudinal direction of the vehicle body, a floor cross member disposed along the vehicle width direction, and a front side member. And a reinforcing member extending to the intersection with the floor cross member, and the intersection between the reinforcing member and the floor cross member is fastened with bolts and nuts with the floor panel interposed therebetween, so that when the vehicle collides It has an excellent effect that the deformation of the floor panel can be suppressed.

本発明の車体下部構造の第１実施形態を図１〜図３に従って説明する。   A first embodiment of a lower body structure of the present invention will be described with reference to FIGS.

なお、図中矢印ＦＲは車体前方方向を、矢印ＵＰは車体上方方向を、矢印ＩＮは車幅内側方向を示す。   In the figure, the arrow FR indicates the vehicle body front direction, the arrow UP indicates the vehicle body upward direction, and the arrow IN indicates the vehicle width inside direction.

図１に示される如く、本実施形態の車体１０における前部には、車幅方向両端下部近傍に車体前後方向に沿って左右一対のフロントサイドメンバ１２が配設されており（図１では車体右側のフロントサイドメンバのみを示す）、フロントサイドメンバ１２の前部１２Ａは車体前後方向へ延設されている。また、フロントサイドメンバ１２の前部１２Ａの車体後方側に形成された傾斜部１２Ｂは、ダッシュパネル１４の下部１４Ａの前面に沿って車体後方へ延設されており、車体前方上側から車体後方下側へ傾斜している。なお、フロントサイドメンバ１２の傾斜部１２Ｂは上開きのハット型断面とされており、ダッシュパネル１４とで閉断面構造を形成している。   As shown in FIG. 1, a pair of left and right front side members 12 are disposed in the front part of the vehicle body 10 according to the present embodiment in the vicinity of the lower portions at both ends in the vehicle width direction along the vehicle body front-rear direction. The front part 12A of the front side member 12 extends in the longitudinal direction of the vehicle body. An inclined portion 12B formed on the vehicle body rear side of the front portion 12A of the front side member 12 extends toward the vehicle body along the front surface of the lower portion 14A of the dash panel 14, and extends from the vehicle body front upper side to the vehicle body rear lower side. Inclined to the side. The inclined portion 12B of the front side member 12 has a top-open hat-shaped cross section, and forms a closed cross-sectional structure with the dash panel 14.

また、フロントサイドメンバ１２の傾斜部１２Ｂの後端部１２Ｃからは、車体後方側へ向かって延設部１２Ｄが延設されており、フロントサイドメンバ１２の延設部１２Ｄは、フロアパネル１６の車幅方向中央部に車体前後方向に沿って形成されたフロアトンネル部１８と、フロアパネル１６の車幅方向両端部に車体前後方向に沿って配設されたロッカ２０と、の間に車体前後方向に沿って配設されている。   Further, an extended portion 12D extends from the rear end portion 12C of the inclined portion 12B of the front side member 12 toward the rear side of the vehicle body, and the extended portion 12D of the front side member 12 extends from the floor panel 16. Between the floor tunnel portion 18 formed along the vehicle longitudinal direction at the vehicle width direction central portion and the rocker 20 disposed along the vehicle longitudinal direction at both ends of the floor panel 16 in the vehicle width direction. It is arranged along the direction.

図２に示される如く、フロントサイドメンバ１２の延設部１２Ｄは上開きのハット型断面とされており、フロントサイドメンバ１２の延設部１２Ｄは開口端部には、左右のフランジ１２Ｅが形成されている。フロントサイドメンバ１２の延設部１２Ｄにおける左右のフランジ１２Ｅは、それぞれフロアパネル１６の下面１６Ａに溶着されており、フロントサイドメンバ１２の延設部１２Ｄは、フロアパネル１６とで車体前後方向に延びる閉断面構造２２を形成している。   As shown in FIG. 2, the extended portion 12D of the front side member 12 has a hat-shaped cross section with an open top, and the extended portion 12D of the front side member 12 has left and right flanges 12E formed at the opening end. Has been. The left and right flanges 12E in the extending portion 12D of the front side member 12 are welded to the lower surface 16A of the floor panel 16, respectively, and the extending portion 12D of the front side member 12 extends in the vehicle longitudinal direction with the floor panel 16. A closed cross-section structure 22 is formed.

また、閉断面構造２２の内部には補強部材としてのリインフォースメント２４が配設されており、リインフォースメント２４の車体前後方向から見た断面形状は開口部を下方へ向けたコ字状となっている。   In addition, a reinforcement 24 as a reinforcing member is disposed inside the closed cross-sectional structure 22, and the cross-sectional shape of the reinforcement 24 viewed from the front-rear direction of the vehicle body is a U-shape with the opening facing downward. Yes.

図１に示される如く、リインフォースメント２４の前端部２４Ａは、フロントサイドメンバ１２の傾斜部１２Ｂに達しており、リインフォースメント２４の後端部２４Ｂは、フロントサイドメンバ１２とフロアクロスメンバ３０との交差部まで延設されている。なお、リインフォースメント２４は、図示を省略したブラケットによってフロントサイドメンバ１２内に固定されている。   As shown in FIG. 1, the front end portion 24 </ b> A of the reinforcement 24 reaches the inclined portion 12 </ b> B of the front side member 12, and the rear end portion 24 </ b> B of the reinforcement 24 is between the front side member 12 and the floor cross member 30. It extends to the intersection. The reinforcement 24 is fixed in the front side member 12 by a bracket (not shown).

フロアクロスメンバ３０は車幅方向に沿って配設されており、車幅方向外側端部３０Ａがロッカ２０に連結され、車幅方向内側端部３０Ｂがフロアトンネル部１８に連結されている。   The floor cross member 30 is disposed along the vehicle width direction, the vehicle width direction outer end 30A is connected to the rocker 20, and the vehicle width direction inner end 30B is connected to the floor tunnel portion 18.

図３に示される如く、フロアクロスメンバ３０の車幅方向から見た断面形状は、下開きのハット型断面となっている。フロアクロスメンバ３０の開口前端部には車体前方へ向ってフランジ３０Ｃが形成されており、フロアクロスメンバ３０の開口後端部には車体後方へ向ってフランジ３０Ｄが形成されている。フロアクロスメンバ３０のフランジ３０Ｃ、フランジ３０Ｄはフロアパネル１６の上面１６Ｂに溶接により接合されており、フロアクロスメンバ３０とフロアパネル１６とで車幅方向に延びる閉断面構造３４が形成されている。   As shown in FIG. 3, the cross-sectional shape of the floor cross member 30 viewed from the vehicle width direction is a downward-opening hat-shaped cross section. A flange 30C is formed at the front end of the opening of the floor cross member 30 toward the front of the vehicle body, and a flange 30D is formed at the rear end of the opening of the floor cross member 30 toward the rear of the vehicle body. The flange 30C and the flange 30D of the floor cross member 30 are joined to the upper surface 16B of the floor panel 16 by welding, and the floor cross member 30 and the floor panel 16 form a closed cross-sectional structure 34 that extends in the vehicle width direction.

また、フロアクロスメンバ３０におけるフロントサイドメンバ１２と交差する部位においては、フロアクロスメンバ３０のフランジ３０Ｃ、フランジ３０Ｄにそれぞれ貫通孔３６が形成されている。フロアクロスメンバ３０の貫通孔３６の下方となるフロアパネル１６の部位には貫通孔３８が形成されており、フロアパネル１６の貫通孔３８の下方となるリインフォースメント２４の上壁部２４Ｃの部位には貫通孔４０が形成されている。   Further, in the portion of the floor cross member 30 that intersects the front side member 12, through holes 36 are formed in the flange 30C and the flange 30D of the floor cross member 30, respectively. A through hole 38 is formed in a portion of the floor panel 16 below the through hole 36 of the floor cross member 30, and the upper wall portion 24 </ b> C of the reinforcement 24 below the through hole 38 of the floor panel 16. A through hole 40 is formed.

貫通孔３６、３８、４０には、車体上方側からボルト４２が挿入されており、これらのボルト４２はそれぞれリインフォースメント２４の上壁部２４Ｃの下面に溶着されたナット４４に締結されている。   Bolts 42 are inserted into the through holes 36, 38, 40 from above the vehicle body, and these bolts 42 are fastened to nuts 44 welded to the lower surface of the upper wall portion 24 </ b> C of the reinforcement 24.

次に、本実施形態の作用を説明する。   Next, the operation of this embodiment will be described.

本実施形態では、車体前後方向に沿って配設されたフロントサイドメンバ１２内に配設されフロアクロスメンバ３０との交差部まで延設されたリインフォースメント２４と、車幅方向に沿って配設されたフロアクロスメンバ３０とを、フロアパネル１６を間に挟んでボルト４２とナット４４により締結している。この結果、リインフォースメント２４とフロアクロスメンバ３０との結合部における剥離方向の強度を、溶接によってリインフォースメント２４とフロアクロスメンバ３０とをフロアパネル１６を間に挟んで結合した場合に比べて向上できるため、剪断方向に加えて剥離方向の結合強度を向上できる。   In the present embodiment, the reinforcement 24 disposed in the front side member 12 disposed along the longitudinal direction of the vehicle body and extending to the intersection with the floor cross member 30 is disposed along the vehicle width direction. The floor cross member 30 is fastened by bolts 42 and nuts 44 with the floor panel 16 in between. As a result, the strength in the peeling direction at the joint portion between the reinforcement 24 and the floor cross member 30 can be improved as compared with the case where the reinforcement 24 and the floor cross member 30 are joined with the floor panel 16 interposed therebetween by welding. Therefore, the bond strength in the peeling direction can be improved in addition to the shearing direction.

また、本実施形態では、フロアパネル１６に溶接用の作業孔を形成する必要がないため、作業孔を形成することによるフロアパネル１６の剛性低下も無い。   Moreover, in this embodiment, since it is not necessary to form the work hole for welding in the floor panel 16, there is no rigidity fall of the floor panel 16 by forming a work hole.

この結果、本実施形態では、車体衝突時にフロントサイドメンバ１２とフロアクロスメンバ３０との枠組みの変形を抑制できる。このため、車体衝突時のフロアパネル１６の変形、即ち、皺や破れを抑制できる。   As a result, in the present embodiment, it is possible to suppress the deformation of the frame between the front side member 12 and the floor cross member 30 at the time of a vehicle body collision. For this reason, the deformation | transformation of the floor panel 16 at the time of a vehicle body collision, ie, a wrinkle and a tear, can be suppressed.

また、本実施形態では、フロアパネル１６に作業孔がないため、フロントサイドメンバ１２の内部に入った水がフロアパネル１６の作業孔から車室内に入ることもない。   In the present embodiment, since the floor panel 16 has no work hole, the water that has entered the front side member 12 does not enter the vehicle compartment from the work hole of the floor panel 16.

次に、本発明の車体下部構造の第２実施形態を図４及び図５に従って説明する。   Next, a second embodiment of the lower body structure of the present invention will be described with reference to FIGS.

なお、第１実施形態と同一部材に付いては、同一符号を付してその説明を省略する。   In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

図４に示される如く、本実施形態では、第１実施形態におけるリインフォースメント２４を除いた構成となっており、フロントサイドメンバ１２とフロアクロスメンバ３０との交差部において、フロアクロスメンバ３０のフランジ３０Ｃ、３０Ｄに左右一対の貫通孔５０が形成されている。   As shown in FIG. 4, in the present embodiment, the reinforcement 24 in the first embodiment is excluded, and the flange of the floor cross member 30 is formed at the intersection of the front side member 12 and the floor cross member 30. A pair of left and right through holes 50 are formed in 30C and 30D.

図５に示される如く、フロアクロスメンバ３０の貫通孔５０の下方となるフロアパネル１６の部位には貫通孔５２が形成されており、フロアパネル１６の貫通孔５２の下方となるフロントサイドメンバ１２の延設部１２Ｄにおける左右のフランジ１２Ｅの部位には貫通孔５４が形成されている。   As shown in FIG. 5, a through hole 52 is formed in a portion of the floor panel 16 below the through hole 50 of the floor cross member 30, and the front side member 12 below the through hole 52 of the floor panel 16. Through holes 54 are formed in the left and right flanges 12E of the extending portion 12D.

貫通孔５０、５２、５４には、車体上方側からボルト５６がそれぞれ挿入されており、これらのボルト５６は、それぞれフロントサイドメンバ１２の延設部１２Ｄにおける左右のフランジ１２Ｅの下面に溶着されたナット５８に締結されている。   Bolts 56 are respectively inserted into the through holes 50, 52, and 54 from the upper side of the vehicle body, and these bolts 56 are welded to the lower surfaces of the left and right flanges 12E in the extending portion 12D of the front side member 12, respectively. Fastened to the nut 58.

次に、本実施形態の作用を説明する。   Next, the operation of this embodiment will be described.

本実施形態では、車体前後方向に沿って配設されたフロントサイドメンバ１２の延設部１２Ｄと、車幅方向に沿って配設されたフロアクロスメンバ３０とを、フロアパネル１６を間に挟んでボルト５６とナット５８により締結している。この結果、フロントサイドメンバ１２の延設部１２Ｄとフロアクロスメンバ３０との結合部における剥離方向の強度を、溶接によって、フロントサイドメンバ１２の延設部１２Ｄとフロアクロスメンバ３０とをフロアパネル１６を間に挟んで結合した場合の結合強度に比べて向上できるため、剪断方向に加えて剥離方向の結合強度を向上できる。   In the present embodiment, the extending portion 12D of the front side member 12 disposed along the longitudinal direction of the vehicle body and the floor cross member 30 disposed along the vehicle width direction are sandwiched between the floor panels 16. The bolt 56 and the nut 58 are used for fastening. As a result, the strength in the peeling direction at the joint between the extended portion 12D of the front side member 12 and the floor cross member 30 is welded to connect the extended portion 12D of the front side member 12 and the floor cross member 30 to the floor panel 16. Therefore, the bond strength in the peeling direction can be improved in addition to the shear direction.

また、本実施形態では、フロアパネル１６に溶接用の作業孔を形成する必要がないため、作業孔を形成することによるフロアパネル１６の剛性低下も無い。   Moreover, in this embodiment, since it is not necessary to form the work hole for welding in the floor panel 16, there is no rigidity fall of the floor panel 16 by forming a work hole.

この結果、本実施形態では、車体衝突時にフロントサイドメンバ１２とフロアクロスメンバ３０との枠組みの変形を抑制できる。このため、車体衝突時のフロアパネル１６の変形、即ち、皺や破れを抑制できる。   As a result, in the present embodiment, it is possible to suppress the deformation of the frame between the front side member 12 and the floor cross member 30 at the time of a vehicle body collision. For this reason, the deformation | transformation of the floor panel 16 at the time of a vehicle body collision, ie, a wrinkle and a tear, can be suppressed.

また、本実施形態では、フロアパネル１６に作業孔がないため、フロントサイドメンバ１２の内部に入った水がフロアパネル１６の作業孔から車室内に入ることもない。   In the present embodiment, since the floor panel 16 has no work hole, the water that has entered the front side member 12 does not enter the vehicle compartment from the work hole of the floor panel 16.

以上に於いては、本発明を特定の実施形態について詳細に説明したが、本発明は上記実施形態に限定されるものではなく、本発明の範囲内にて他の種々の実施形態が可能であることは当業者にとって明らかである。例えば、上記実施形態のボルト４２、５６の形状、特に、頭部の形状は限定されず、ナット４４、５８と螺合する螺子部と、ナット４４、５８との間に、フロアパネル１６等を挟み込む頭部を有する構成であれば良い。   Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, the shape of the bolts 42 and 56 of the above-described embodiment, particularly the shape of the head, is not limited, and the floor panel 16 or the like is provided between the screw portions that are screwed into the nuts 44 and 58 and the nuts 44 and 58. What is necessary is just the structure which has the head which pinches | interposes.

本発明の第１実施形態に係る車体下部構造を示す車体斜め後方内側から見た斜視図である。It is the perspective view seen from the vehicle body diagonally back inner side which shows the vehicle body lower part structure concerning 1st Embodiment of this invention. 図１の２−２線に沿った拡大断面図である。It is an expanded sectional view along line 2-2 in FIG. 図１の３−３線に沿った拡大断面図である。FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 1. 本発明の第２実施形態に係る車体下部構造の要部を示す車体斜め後方内側から見た斜視図である。It is the perspective view seen from the vehicle body diagonally back inner side which shows the principal part of the vehicle body lower part structure concerning 2nd Embodiment of this invention. 図４の５−５線に沿った拡大断面図である。FIG. 5 is an enlarged cross-sectional view taken along line 5-5 in FIG.

符号の説明Explanation of symbols

１２ フロントサイドメンバ
１２Ｄ フロントサイドメンバの延設部
１２Ｅ フロントサイドメンバのフランジ
１６ フロアパネル
１８ フロアトンネル部
２４ リインフォースメント（補強部材）
２４Ｃ リインフォースメントの上壁部
３０ フロアクロスメンバ
３０Ｄ フロアクロスメンバのフランジ
３０Ｃ フロアクロスメンバのフランジ
４２ ボルト
４４ ナット
５６ ボルト
５８ ナット 12 Front Side Member 12D Front Side Member Extension 12E Front Side Member Flange 16 Floor Panel 18 Floor Tunnel 24 Reinforcement (Reinforcement Member)
24C Reinforcement upper wall 30 Floor cross member 30D Floor cross member flange 30C Floor cross member flange 42 Bolt 44 Nut 56 Bolt 58 Nut

Claims (2)

車体前後方向に沿って配設されたフロントサイドメンバと、
車幅方向に沿って配設されたフロアクロスメンバと、
を有し、前記フロントサイドメンバと前記フロアクロスメンバとの交差部を、フロアパネルを間に挟んでをボルトとナットにより締結したことを特徴とする車体下部構造。 A front side member disposed along the longitudinal direction of the vehicle body,
A floor cross member disposed along the vehicle width direction;
A vehicle body lower structure characterized in that an intersection of the front side member and the floor cross member is fastened with a bolt and a nut with a floor panel interposed therebetween. 車体前後方向に沿って配設されたフロントサイドメンバと、
車幅方向に沿って配設されたフロアクロスメンバと、
前記フロントサイドメンバ内に配設され前記フロアクロスメンバとの交差部まで延設された補強部材と、
を有し、前記補強部材と前記フロアクロスメンバとの交差部を、フロアパネルを間に挟んでボルトとナットにより締結したことを特徴とする車体下部構造。 A front side member disposed along the longitudinal direction of the vehicle body,
A floor cross member disposed along the vehicle width direction;
A reinforcing member disposed in the front side member and extending to the intersection with the floor cross member;
A vehicle body lower structure characterized in that an intersection of the reinforcing member and the floor cross member is fastened with a bolt and a nut with a floor panel interposed therebetween.
JP2004018177A 2004-01-27 2004-01-27 Car body lower part structure Pending JP2005212503A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010067170A1 (en) 2008-12-08 2010-06-17 Toyota Jidosha Kabushiki Kaisha Structure that includes bolt fastening portion having higher resistance against external force
JP2013010424A (en) * 2011-06-29 2013-01-17 Toyota Motor Corp Vehicle front part structure
JP2013154783A (en) * 2012-01-30 2013-08-15 Nhk Spring Co Ltd Vehicle seat
WO2015079928A1 (en) 2013-11-28 2015-06-04 Toyota Jidosha Kabushiki Kaisha Vehicle body lower portion structure
JP2015110358A (en) * 2013-12-06 2015-06-18 スズキ株式会社 Vehicle lower part structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010067170A1 (en) 2008-12-08 2010-06-17 Toyota Jidosha Kabushiki Kaisha Structure that includes bolt fastening portion having higher resistance against external force
CN102245463A (en) * 2008-12-08 2011-11-16 丰田自动车株式会社 Structure that includes bolt fastening portion having higher resistance against external force
DE112009003653T5 (en) 2008-12-08 2012-08-02 Toyota Jidosha K.K. STRUCTURE HAVING A HIGH RESISTANCE TO AN EXTERNAL POWER SECTION WITH SCREW-MOUNTED SECTION
JP2013010424A (en) * 2011-06-29 2013-01-17 Toyota Motor Corp Vehicle front part structure
JP2013154783A (en) * 2012-01-30 2013-08-15 Nhk Spring Co Ltd Vehicle seat
WO2015079928A1 (en) 2013-11-28 2015-06-04 Toyota Jidosha Kabushiki Kaisha Vehicle body lower portion structure
JP2015104951A (en) * 2013-11-28 2015-06-08 トヨタ自動車株式会社 Vehicle body lower part structure
US9809253B2 (en) 2013-11-28 2017-11-07 Toyota Jidosha Kabushiki Kaisha Vehicle body lower portion structure
JP2015110358A (en) * 2013-12-06 2015-06-18 スズキ株式会社 Vehicle lower part structure

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