JP5728523B2 - Body structure - Google Patents

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JP5728523B2
JP5728523B2 JP2013086708A JP2013086708A JP5728523B2 JP 5728523 B2 JP5728523 B2 JP 5728523B2 JP 2013086708 A JP2013086708 A JP 2013086708A JP 2013086708 A JP2013086708 A JP 2013086708A JP 5728523 B2 JP5728523 B2 JP 5728523B2
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floor panel
floor
seat mounting
vehicle body
right seat
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JP2014210461A (en
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洋一 前田
洋一 前田
木村　賢治
賢治 木村
敦司 棚井
敦司 棚井
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Honda Motor Co Ltd
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Description

本発明は、乗用車等の車両の車体において、シートを配置した部分及びその周囲の部分の、改良された技術に関する。   The present invention relates to an improved technique for a portion where a seat is disposed and a portion around the portion in a vehicle body of a vehicle such as a passenger car.

車体において、シートの左右の被取付部を取り付けるための左右のシート取付部を有した技術が、例えば特許文献１〜２によって知られている。   For example, Patent Documents 1 and 2 disclose a technique having left and right seat attachment portions for attaching left and right attachment portions of a seat in a vehicle body.

特許文献１で知られている車体は、サイドシルとフロアトンネルとの間に掛け渡されたフロアクロスメンバを含む。該フロアクロスメンバは、フロアパネルの上面に接合されている。該フロアクロスメンバの上には、シートの左右の被取付部が取り付けられる。しかし、特許文献１で知られている車体では、フロアクロスメンバが車幅方向に通っているので、シートに着座した乗員の足下の自由度を高める、つまり車室の居住性を高めるには、改良の余地がある。   The vehicle body known from Patent Document 1 includes a floor cross member spanned between a side sill and a floor tunnel. The floor cross member is joined to the upper surface of the floor panel. On the floor cross member, left and right attached portions of the seat are attached. However, in the vehicle body known from Patent Document 1, since the floor cross member passes in the vehicle width direction, to increase the freedom of the feet of the occupant seated on the seat, that is, to improve the comfort of the passenger compartment, There is room for improvement.

特許文献２で知られている車体は、フロアパネルの上に、左右のクロスメンバ取付ブラケットと左右のシート取付ブラケットとが取り付けられた構成である。左右のクロスメンバ取付ブラケットの上には、第１のクロスメンバが掛け渡されて、ボルト止めされている。左右のシート取付ブラケットの上には、第２のクロスメンバが掛け渡されて、ボルト止めされている。第２のクロスメンバの上面には、シートの左右の被取付部が取り付けられる。   The vehicle body known from Patent Document 2 has a configuration in which left and right cross member mounting brackets and left and right seat mounting brackets are mounted on a floor panel. A first cross member is stretched over the left and right cross member mounting brackets and bolted. A second cross member is stretched over the left and right seat mounting brackets and bolted. Left and right attached portions of the seat are attached to the upper surface of the second cross member.

しかし、特許文献２で知られている車体では、第２のクロスメンバがフロアパネルから持ち上がっており、しかも車幅方向に通っているので、シートに着座した乗員の足下の自由度を高める、つまり車室の居住性を高めるには、改良の余地がある。さらには、第２のクロスメンバがフロアパネルから持ち上がっているので、車体のフレームからフロアパネルに伝わる走行振動を抑制するには、改良の余地がある。このように、特許文献２で知られている車体では、フロアパネルの剛性及び制振性能を高めるとともに、車室の居住性を高めるための、更なる改良が求められる。   However, in the vehicle body known from Patent Document 2, since the second cross member is lifted from the floor panel and passes in the vehicle width direction, the degree of freedom of the feet of the passenger seated on the seat is increased. There is room for improvement to enhance the comfort of the passenger compartment. Furthermore, since the second cross member is lifted from the floor panel, there is room for improvement in order to suppress running vibration transmitted from the frame of the vehicle body to the floor panel. As described above, the vehicle body known from Patent Document 2 requires further improvements for improving the rigidity and vibration control performance of the floor panel and enhancing the comfort of the passenger compartment.

特許第３５３１４７６号公報Japanese Patent No. 3531476 特許第４１２００７３号公報Japanese Patent No. 4120073

本発明は、フロアパネルの剛性及び制振性能を高めるとともに、車室の居住性を高めることができる技術を提供することを課題とする。   It is an object of the present invention to provide a technique capable of improving the rigidity and vibration control performance of a floor panel and enhancing the comfort of a passenger compartment.

請求項１に係る発明によれば、フロアパネルと一体に形成され、シートの左右の被取付部を取り付けるための左右のシート取付部と、
該左右のシート取付部間にわたって前記フロアパネルの上面に重ねられ、且つ該上面に接合されたフロア補強メンバと、
前記左右のシート取付部の下面に重ねられ、且つ該下面に接合された左右のシート取付補強メンバとを含み、
前記フロアパネルに対する前記フロア補強メンバの接合部と、前記左右のシート取付部に対する前記左右のシート取付補強メンバの接合部とは、それぞれ少なくとも一部が車体上下方向に重なっており、
車体前後方向に通るブレーキ操作用ワイヤケーブルを前記フロアパネルの下面に止めるためのワイヤ止め部材を、更に有し、
該ワイヤ止め部材は、左右のシート取付補強メンバのなかの一方のシート取付補強メンバに重ねられる、重ね合わせ部を有し、
該重ね合わせ部は、前記一方のシート取付補強メンバと共に前記フロアパネルの下面に接合されていることを特徴とする車体構造車体構造が提供される。 According to the first aspect of the present invention, the left and right seat mounting portions that are integrally formed with the floor panel and for mounting the left and right mounted portions of the seat;
A floor reinforcing member which is superimposed on the upper surface of the floor panel and joined to the upper surface between the left and right seat mounting portions;
Including left and right seat mounting reinforcement members that are superimposed on the lower surfaces of the left and right seat mounting portions and joined to the lower surfaces;
At least a part of the joint portion of the floor reinforcing member to the floor panel and the joint portion of the left and right seat mounting reinforcement members to the left and right seat mounting portions overlap each other in the vehicle body vertical direction ,
A wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel;
The wire fastening member has an overlapping portion that is overlapped with one of the left and right seat mounting reinforcement members.
The overlapping portion is joined to the lower surface of the floor panel together with the one seat mounting reinforcing member .

請求項２に記載のごとく、好ましくは、前記フロアパネルの上面には、車体前後方向に溝部が形成され、前記フロア補強メンバの下面は、前記溝部に沿うように形成されるとともに、該溝部に接合されている。   According to a second aspect of the present invention, preferably, a groove portion is formed in the front-rear direction of the vehicle body on the upper surface of the floor panel, and a lower surface of the floor reinforcing member is formed along the groove portion. It is joined.

請求項３に記載のごとく、好ましくは、前記フロア補強メンバには、該フロア補強メンバの前縁と後縁とにそれぞれ沿って車幅方向へ延びた、２つの凸条が形成されている。   As described in claim 3, preferably, the floor reinforcing member is formed with two ridges extending in the vehicle width direction along the front edge and the rear edge of the floor reinforcing member.

請求項４に記載のごとく、好ましくは、車体前後方向に通るブレーキ操作用ワイヤケーブルを前記フロアパネルの下面に止めるためのワイヤ止め部材を、更に有し、前記フロアパネルの上面のなかの、前記ワイヤ止め部材の位置の近傍の部位は、前記溝部を有していない略平坦面であり、前記フロア補強メンバの下面は、前記略平坦面に沿うように形成されるとともに、該略平坦面に接合されている。 According to a fourth aspect of the present invention, it is preferable to further include a wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel, The portion in the vicinity of the position of the wire fixing member is a substantially flat surface that does not have the groove, and the lower surface of the floor reinforcing member is formed along the substantially flat surface, It is joined.

請求項５に係る発明によれば、フロアパネルと一体に形成され、シートの左右の被取付部を取り付けるための左右のシート取付部と、
該左右のシート取付部間にわたって前記フロアパネルの上面に重ねられ、且つ該上面に接合されたフロア補強メンバと、
前記左右のシート取付部の下面に重ねられ、且つ該下面に接合された左右のシート取付補強メンバとを含み、
前記フロアパネルに対する前記フロア補強メンバの接合部と、前記左右のシート取付部に対する前記左右のシート取付補強メンバの接合部とは、それぞれ少なくとも一部が車体上下方向に重なっており、
前記フロアパネルの上面には、車体前後方向に溝部が形成され、前記フロア補強メンバの下面は、前記溝部に沿うように形成されるとともに、該溝部に接合されており、
車体前後方向に通るブレーキ操作用ワイヤケーブルを前記フロアパネルの下面に止めるためのワイヤ止め部材を、更に有し、前記フロアパネルの上面のなかの、前記ワイヤ止め部材の位置の近傍の部位は、前記溝部を有していない略平坦面であり、前記フロア補強メンバの下面は、前記略平坦面に沿うように形成されるとともに、該略平坦面に接合されていることを特徴とする車体構造が提供される。 According to the invention according to claim 5, the left and right seat mounting portions that are integrally formed with the floor panel and for mounting the left and right mounted portions of the seat;
A floor reinforcing member which is superimposed on the upper surface of the floor panel and joined to the upper surface between the left and right seat mounting portions;
Including left and right seat mounting reinforcement members that are superimposed on the lower surfaces of the left and right seat mounting portions and joined to the lower surfaces;
At least a part of the joint portion of the floor reinforcing member to the floor panel and the joint portion of the left and right seat mounting reinforcement members to the left and right seat mounting portions overlap each other in the vehicle body vertical direction,
On the upper surface of the floor panel, a groove portion is formed in the longitudinal direction of the vehicle body, and the lower surface of the floor reinforcing member is formed along the groove portion and joined to the groove portion,
A wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel, and a portion of the upper surface of the floor panel in the vicinity of the position of the wire stopper member, The vehicle body structure is a substantially flat surface that does not have the groove portion, and the lower surface of the floor reinforcing member is formed along the substantially flat surface and joined to the substantially flat surface. Is provided.

請求項１に係る発明では、フロアパネルの上面は、該フロアパネルと一体の左右のシート取付部間にわたって、フロア補強メンバが接合されることにより、補強されている。左右のシート取付部の下面は、左右のシート取付補強メンバが接合されることにより、補強されている。フロアパネルに対するフロア補強メンバの接合部と、左右のシート取付部に対する左右のシート取付補強メンバの接合部とは、それぞれ少なくとも一部が車体上下方向に重なっている。このため、左右のシート取付部が一体に形成されているフロアパネルは、フロア補強メンバと左右のシート取付補強メンバとによって、車幅方向に連続して補強される。従って、フロアパネルの剛性及び制振性能を高めることができる。   In the invention which concerns on Claim 1, the upper surface of a floor panel is reinforced by joining a floor reinforcement member over the sheet | seat attachment part integral with the floor panel. The lower surfaces of the left and right seat mounting portions are reinforced by joining the left and right seat mounting reinforcing members. At least a portion of the joint portion of the floor reinforcing member to the floor panel and the joint portion of the left and right seat mounting reinforcement members to the left and right seat mounting portions overlap each other in the vehicle body vertical direction. For this reason, the floor panel in which the left and right seat mounting portions are integrally formed is continuously reinforced in the vehicle width direction by the floor reinforcing member and the left and right seat mounting reinforcing members. Therefore, the rigidity and vibration control performance of the floor panel can be improved.

さらには、左右のシート取付部は、フロアパネルに一体に形成されるとともに、下面を左右のシート取付補強メンバによって補強されている。このため、左右のシート取付部は、シートから作用する荷重を十分に支えることができる。しかも、左右のシート取付部の強度を高めるのに、車室側に突出する部分を極力排除することができるので、車室の空間をより一層確保でき、乗員の居住性を高めることができる。特に、シートに着座した乗員の足下の自由度が高まる。
さらに、請求項１に係る発明では、車体前後方向に通るブレーキ操作用ワイヤケーブルを、ワイヤ止め部材によってフロアパネルの下面に止める構成である。この場合に、該ワイヤ止め部材を、一方のシート取付補強メンバと共にフロアパネルの下面に接合している。この結果、該一方のシート取付補強メンバの補強作用を、ワイヤ止め部材によって補助することができる。従って、フロアパネルの剛性を高めて、制振性能をより高めることができる。 Furthermore, the left and right seat mounting portions are formed integrally with the floor panel, and the lower surface is reinforced by the left and right seat mounting reinforcing members. For this reason, the left and right seat mounting portions can sufficiently support the load acting from the seat. Moreover, in order to increase the strength of the left and right seat mounting portions, the portion protruding toward the passenger compartment can be eliminated as much as possible, so that the passenger compartment can be further secured and the occupant comfort can be improved. In particular, the degree of freedom of the feet of passengers seated on the seat is increased.
Furthermore, the invention according to claim 1 is configured such that the brake operation wire cable passing in the longitudinal direction of the vehicle body is stopped on the lower surface of the floor panel by the wire stopper member. In this case, the wire fixing member is joined to the lower surface of the floor panel together with one of the seat mounting reinforcing members. As a result, the reinforcing action of the one sheet mounting reinforcement member can be assisted by the wire fixing member. Accordingly, the rigidity of the floor panel can be increased and the vibration damping performance can be further improved.

請求項２に係る発明では、フロアパネルは、上面に、車体前後方向に溝部が形成されることにより、面剛性が高まるので、制振性能をより高めることができる。しかも、フロア補強メンバの下面は、溝部に沿うように形成されるとともに、該溝部に接合されている。このため、フロア補強メンバの厚みを小さくすることができ、この結果、車室側に突出する部分を極力排除することができるので、車室の空間をより一層確保でき、乗員の居住性を高めることができる。特に、シートに着座した乗員の足下の自由度がより高まる。このように、乗員の居住性を高めつつ、フロアパネルの剛性を高めることによって、制振性能をより高めることができる。   In the invention according to claim 2, since the floor panel is formed with a groove portion in the front-rear direction of the vehicle body on the upper surface, the surface rigidity is increased, so that the vibration damping performance can be further improved. Moreover, the lower surface of the floor reinforcing member is formed along the groove and is joined to the groove. For this reason, the thickness of the floor reinforcing member can be reduced, and as a result, the portion protruding to the passenger compartment side can be eliminated as much as possible, so that the passenger compartment space can be further secured and the occupant comfort is improved. be able to. In particular, the degree of freedom of the feet of an occupant seated on the seat is further increased. In this way, the vibration damping performance can be further improved by increasing the rigidity of the floor panel while improving the comfortability of the occupant.

請求項３に係る発明では、フロア補強メンバには、該フロア補強メンバの前縁と後縁とにそれぞれ沿って車幅方向へ延びた、２つの凸条が形成されている。このため、フロア補強メンバの剛性が高まる。この結果、フロアパネルの剛性を高めて、制振性能をより高めることができる。   In the invention according to claim 3, the floor reinforcing member is formed with two ridges extending in the vehicle width direction along the front edge and the rear edge of the floor reinforcing member. For this reason, the rigidity of a floor reinforcement member increases. As a result, the rigidity of the floor panel can be increased and the damping performance can be further increased.

請求項４に係る発明では、フロアパネルの上面のなかの、ワイヤ止め部材の位置の近傍の部位は、溝部を有していない略平坦面である。フロアパネルのなかの、ワイヤ止め部材の位置の近傍の部位が平坦面なので、ワイヤ止め部材によってワイヤケーブルを止めやすい。さらに、フロア補強メンバの下面は、略平坦面に沿うように形成されるとともに、該略平坦面に接合されている。このため、ワイヤ止め部材によってワイヤケーブルをフロアパネルに止める構成であっても、フロア補強メンバによってフロアパネルを適切に補強することができる。 In the invention which concerns on Claim 4, the site | part vicinity of the position of a wire stopper member in the upper surface of a floor panel is a substantially flat surface which does not have a groove part. Since a portion of the floor panel near the position of the wire stopper member is a flat surface, the wire cable can be easily stopped by the wire stopper member. Furthermore, the lower surface of the floor reinforcing member is formed along the substantially flat surface and joined to the substantially flat surface. For this reason, even if it is the structure which fixes a wire cable to a floor panel by a wire stop member, a floor panel can be appropriately reinforced by a floor reinforcement member.

請求項５に係る発明では、フロアパネルの上面は、該フロアパネルと一体の左右のシート取付部間にわたって、フロア補強メンバが接合されることにより、補強されている。左右のシート取付部の下面は、左右のシート取付補強メンバが接合されることにより、補強されている。フロアパネルに対するフロア補強メンバの接合部と、左右のシート取付部に対する左右のシート取付補強メンバの接合部とは、それぞれ少なくとも一部が車体上下方向に重なっている。このため、左右のシート取付部が一体に形成されているフロアパネルは、フロア補強メンバと左右のシート取付補強メンバとによって、車幅方向に連続して補強される。従って、フロアパネルの剛性及び制振性能を高めることができる。
さらには、左右のシート取付部は、フロアパネルに一体に形成されるとともに、下面を左右のシート取付補強メンバによって補強されている。このため、左右のシート取付部は、シートから作用する荷重を十分に支えることができる。しかも、左右のシート取付部の強度を高めるのに、車室側に突出する部分を極力排除することができるので、車室の空間をより一層確保でき、乗員の居住性を高めることができる。特に、シートに着座した乗員の足下の自由度が高まる。
さらに、請求項５に係る発明では、フロアパネルは、上面に、車体前後方向に溝部が形成されることにより、面剛性が高まるので、制振性能をより高めることができる。しかも、フロア補強メンバの下面は、溝部に沿うように形成されるとともに、該溝部に接合されている。このため、フロア補強メンバの厚みを小さくすることができ、この結果、車室側に突出する部分を極力排除することができるので、車室の空間をより一層確保でき、乗員の居住性を高めることができる。特に、シートに着座した乗員の足下の自由度がより高まる。このように、乗員の居住性を高めつつ、フロアパネルの剛性を高めることによって、制振性能をより高めることができる。
さらに、請求項５に係る発明では、フロアパネルの上面のなかの、ワイヤ止め部材の位置の近傍の部位は、溝部を有していない略平坦面である。フロアパネルのなかの、ワイヤ止め部材の位置の近傍の部位が平坦面なので、ワイヤ止め部材によってワイヤケーブルを止めやすい。さらに、フロア補強メンバの下面は、略平坦面に沿うように形成されるとともに、該略平坦面に接合されている。このため、ワイヤ止め部材によってワイヤケーブルをフロアパネルに止める構成であっても、フロア補強メンバによってフロアパネルを適切に補強することができる。 In the invention which concerns on Claim 5, the upper surface of a floor panel is reinforced by joining a floor reinforcement member over the sheet | seat attachment part integral with the floor panel. The lower surfaces of the left and right seat mounting portions are reinforced by joining the left and right seat mounting reinforcing members. At least a portion of the joint portion of the floor reinforcing member to the floor panel and the joint portion of the left and right seat mounting reinforcement members to the left and right seat mounting portions overlap each other in the vehicle body vertical direction. For this reason, the floor panel in which the left and right seat mounting portions are integrally formed is continuously reinforced in the vehicle width direction by the floor reinforcing member and the left and right seat mounting reinforcing members. Therefore, the rigidity and vibration control performance of the floor panel can be improved.
Furthermore, the left and right seat mounting portions are formed integrally with the floor panel, and the lower surface is reinforced by the left and right seat mounting reinforcing members. For this reason, the left and right seat mounting portions can sufficiently support the load acting from the seat. Moreover, in order to increase the strength of the left and right seat mounting portions, the portion protruding toward the passenger compartment can be eliminated as much as possible, so that the passenger compartment can be further secured and the occupant comfort can be improved. In particular, the degree of freedom of the feet of passengers seated on the seat is increased.
Further, in the invention according to claim 5, since the floor panel is formed with a groove portion in the front-rear direction of the vehicle body on the upper surface, the surface rigidity is increased, so that the vibration damping performance can be further improved. Moreover, the lower surface of the floor reinforcing member is formed along the groove and is joined to the groove. For this reason, the thickness of the floor reinforcing member can be reduced, and as a result, the portion protruding to the passenger compartment side can be eliminated as much as possible, so that the passenger compartment space can be further secured and the occupant comfort is improved. be able to. In particular, the degree of freedom of the feet of an occupant seated on the seat is further increased. In this way, the vibration damping performance can be further improved by increasing the rigidity of the floor panel while improving the comfortability of the occupant.
Furthermore, in the invention which concerns on Claim 5, the site | part of the vicinity of the position of a wire stopper member in the upper surface of a floor panel is a substantially flat surface which does not have a groove part. Since a portion of the floor panel near the position of the wire stopper member is a flat surface, the wire cable can be easily stopped by the wire stopper member. Furthermore, the lower surface of the floor reinforcing member is formed along the substantially flat surface and joined to the substantially flat surface. For this reason, even if it is the structure which fixes a wire cable to a floor panel by a wire stop member, a floor panel can be appropriately reinforced by a floor reinforcement member.

本発明に係る車体の中央部の下部を上方から見た斜視図である。It is the perspective view which looked at the lower part of the center part of the vehicle body which concerns on this invention from upper direction. 図１に示された車体の中央部の下部の底面図である。It is a bottom view of the lower part of the center part of the vehicle body shown by FIG. 図１の３−３線に沿った断面図である。FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 1. 図１の４−４線に沿った断面図である。FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 図３に示された右のシート周りの車体を上方から見た斜視図である。FIG. 4 is a perspective view of the vehicle body around the right seat shown in FIG. 3 as viewed from above. 図４に示された右のシート周りの拡大した斜視図である。FIG. 5 is an enlarged perspective view around the right seat shown in FIG. 4. 図３の７−７線に沿った断面図である。FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 3. 図３の８−８線に沿った断面図である。FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 3. 図３の９−９線に沿った断面図である。FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 3. 図１に示された車体中央部の左半分であってフロアパネルを省略した構成を車体前上方から見た斜視図である。FIG. 2 is a perspective view of the left half of the vehicle body center portion shown in FIG. 1, with the floor panel omitted, viewed from the front upper side of the vehicle body. 図１０に示された車体中央部の左半分であってフロアパネルを省略した構成を車体後上方から見た斜視図である。It is the perspective view which looked at the structure which is a left half of the vehicle body center part shown by FIG. 図４の１２−１２線に沿った断面図である。FIG. 12 is a cross-sectional view taken along line 12-12 in FIG. 図４の１３−１３線に沿った断面図である。FIG. 13 is a cross-sectional view taken along line 13-13 of FIG. 図４の１４−１４線に沿った断面図である。FIG. 14 is a cross-sectional view taken along line 14-14 in FIG. 4. 図１に示された左のフロアパネルと左のシート取付補強メンバとワイヤ止め部材との関係を車体下方から見た斜視図である、It is the perspective view which looked at the relationship between the left floor panel shown by FIG. 1, the left seat attachment reinforcement member, and the wire stopper from the vehicle body lower part. 図１５の１６−１６線に沿った断面図である。FIG. 16 is a cross-sectional view taken along line 16-16 of FIG.

本発明を実施するための形態を添付図に基づいて以下に説明する。   EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated below based on an accompanying drawing.

実施例に係る車体構造について図面に基づき説明する。なお、「前」、「後」、「左」、「右」、「上」、「下」は運転者から見た方向に従い、Ｆｒは前側、Ｒｒは後側、Ｌｅは左側、Ｒｉは右側、Ｕｐは上側、Ｄｗは下側、ＣＬは車幅中心線を示す。   A vehicle body structure according to an embodiment will be described with reference to the drawings. "Front", "Rear", "Left", "Right", "Up", "Down" follow the direction seen from the driver, Fr is front, Rr is rear, Le is left, Ri is right , Up is the upper side, Dw is the lower side, and CL is the vehicle width center line.

図１及び図２に示されるように、乗用車等の車両１０の車体１１はモノコックボディから成り、車両１０の車幅方向の中心を通って車両前後方向へ延びる車幅中心線ＣＬに対し、実質的に左右対称形に形成されている。該車両１０は、車室１２に例えば前後に３列のシート（前部シートと中央部シートと後部シート）を備えている。   As shown in FIGS. 1 and 2, a vehicle body 11 of a vehicle 10 such as a passenger car is formed of a monocoque body, and substantially extends with respect to a vehicle width center line CL that extends in the vehicle longitudinal direction through the center of the vehicle 10 in the vehicle width direction. Therefore, it is formed symmetrically. The vehicle 10 includes, for example, three rows of seats (a front seat, a center seat, and a rear seat) in the front and rear of a vehicle compartment 12.

該車体１１は、車体前後方向の中間部分の下部に位置する、左右のサイドシル２１Ｌ，２１Ｒとフロアトンネル２２と前後２つのクロスメンバ２３，２４と左右のフロアパネル２５Ｌ，２５Ｒとを含む。   The vehicle body 11 includes left and right side sills 21L and 21R, a floor tunnel 22, two front and rear cross members 23 and 24, and left and right floor panels 25L and 25R, which are located at the lower part of the middle part in the vehicle body front-rear direction.

左右のサイドシル２１Ｌ，２１Ｒは、車体１１の前後方向中央部に且つ車幅方向両側に位置して、車体前後方向へ延びている。   The left and right side sills 21L, 21R are located in the front-rear direction center of the vehicle body 11 and on both sides in the vehicle width direction, and extend in the vehicle body front-rear direction.

図１〜図４に示されるように、フロアトンネル２２は、車幅中央に位置して車体前後方向へ延びた、板材の一体成型品であって、中央のトンネル本体２２ａと、該トンネル本体２２ａの両側に隣接した左右のトンネル補強部２２ｂ，２２ｂとからなる。   As shown in FIGS. 1 to 4, the floor tunnel 22 is an integrally molded product of a plate material positioned in the center of the vehicle width and extending in the longitudinal direction of the vehicle body, and includes a tunnel main body 22a in the center and the tunnel main body 22a. The left and right tunnel reinforcing portions 22b and 22b are adjacent to each other.

該トンネル本体２２ａは、車幅中央に位置し、車体後方から見て略逆Ｕ断面状に形成されている。該左右のトンネル補強部２２ｂ，２２ｂは、トンネル本体２２ａの下端の両縁が、車体後方から見て車幅方向外側へ略Ｕ字状に折り返された部分である。該左右のトンネル補強部２２ｂ，２２ｂの車幅方向外側の縁には、それぞれ略平板状のフランジ２２ｃ，２２ｃが一体に形成されている。以上の説明から明らかなように、該フロアトンネル２２の全体形状は、車体後方から見て概ねハット状断面である。   The tunnel main body 22a is located in the center of the vehicle width, and is formed in a substantially reverse U-section when viewed from the rear of the vehicle body. The left and right tunnel reinforcement portions 22b, 22b are portions where both edges at the lower end of the tunnel body 22a are folded back in a substantially U shape outward in the vehicle width direction when viewed from the rear of the vehicle body. On the outer edges of the left and right tunnel reinforcing portions 22b, 22b in the vehicle width direction, substantially flat flanges 22c, 22c are integrally formed, respectively. As is apparent from the above description, the overall shape of the floor tunnel 22 is generally a hat-shaped cross section when viewed from the rear of the vehicle body.

該フロアトンネル２２の内方には、エンジン排気用マフラ２６が配置されている。該マフラ２６は、少なくとも上半部がマフラカバー２７によって覆われている。   An engine exhaust muffler 26 is disposed inside the floor tunnel 22. The muffler 26 is covered with a muffler cover 27 at least in the upper half.

図１に示されるように、該２つのクロスメンバ２３，２４は、車体１１の前後方向中央部において、前側に位置する第１クロスメンバ２３と、該第１クロスメンバ２３の後方に位置する第２クロスメンバ２４である。第１及び第２クロスメンバ２３，２４は、車幅方向に延びて、左右のサイドシル２１Ｌ，２１Ｒに掛け渡され且つ接合されている。   As shown in FIG. 1, the two cross members 23, 24 include a first cross member 23 located on the front side and a first cross member 23 located behind the first cross member 23 in the front-rear direction center of the vehicle body 11. Two cross members 24. The first and second cross members 23, 24 extend in the vehicle width direction and are spanned and joined to the left and right side sills 21L, 21R.

左右のフロアパネル２５Ｌ，２５Ｒは、左右のサイドシル２１Ｌ，２１Ｒとフロアトンネル２２との間に張られ且つ接合されている。つまり、図３に示されるように、該右のフロアパネル２５の車幅方向両端は、右のサイドシル２１Ｒの側面とトンネル本体２２ａの側面とに接合されている。さらに、該右のフロアパネル２５Ｒの車幅中央側の端部は、トンネル本体２２ａの右側面に接合されるとともに、右のフランジ２２ｃの上に重ねられ、且つ接合されている。右のトンネル補強部２２ｂと右のフロアパネル２５Ｒとの組み合わせ構造は、車体後方から見て閉断面状に形成されている。左のフロアパネル２５Ｌも、右のフロアパネル２５Ｒと同じ構成である。   The left and right floor panels 25L, 25R are stretched and joined between the left and right side sills 21L, 21R and the floor tunnel 22. That is, as shown in FIG. 3, both ends in the vehicle width direction of the right floor panel 25 are joined to the side surface of the right side sill 21R and the side surface of the tunnel body 22a. Further, the end of the right floor panel 25R on the vehicle width center side is joined to the right side surface of the tunnel main body 22a, and overlaps and is joined to the right flange 22c. The combined structure of the right tunnel reinforcing portion 22b and the right floor panel 25R is formed in a closed cross section when viewed from the rear of the vehicle body. The left floor panel 25L has the same configuration as the right floor panel 25R.

図１、図３及び図４に示されるように、該左右のフロアパネル２５Ｌ，２５Ｒには、制振鋼板等の制振効果を有する板材を採用することが好ましい。該左右のフロアパネル２５Ｌ，２５Ｒの上面２５ａ，２５ａには、車体前後方向に細長い複数の溝部２５ｂ，２５ｂ（ビード２５ｂ，２５ｂ）が形成されている。該左右のフロアパネル２５Ｌ，２５Ｒは補強用の複数の溝部２５ｂ，２５ｂが形成されることにより、剛性が高まるとともに制振効果が高まる。   As shown in FIG. 1, FIG. 3 and FIG. 4, it is preferable to employ a plate material having a damping effect such as a damping steel plate for the left and right floor panels 25L and 25R. On the upper surfaces 25a and 25a of the left and right floor panels 25L and 25R, a plurality of grooves 25b and 25b (beads 25b and 25b) elongated in the vehicle longitudinal direction are formed. The left and right floor panels 25L and 25R are formed with a plurality of reinforcing grooves 25b and 25b, so that the rigidity is enhanced and the vibration damping effect is enhanced.

車室１２には、車体前後方向の中間部分に左右のシート３０Ｌ，３０Ｒが配置されている。該左右のシート３０Ｌ，３０Ｒは、例えば前記前部シートに相当する。該左右のシート３０Ｌ，３０Ｒは、左右のサイドシル２１Ｌ，２１Ｒとフロアトンネル２２と２つのクロスメンバ２３，２４とによって囲まれた左右のスペース２８Ｌ，２８Ｒにおいて、左右のフロアパネル２５Ｌ，２５Ｒに取り付けられる。   In the vehicle compartment 12, left and right seats 30L, 30R are arranged in an intermediate portion in the longitudinal direction of the vehicle body. The left and right seats 30L and 30R correspond to, for example, the front seat. The left and right seats 30L, 30R are attached to the left and right floor panels 25L, 25R in left and right spaces 28L, 28R surrounded by the left and right side sills 21L, 21R, the floor tunnel 22 and the two cross members 23, 24. .

より詳しくは、該右のシート３０Ｒは、後部に車幅方向外側の脚部３１（被取付部３１）と車幅中央側の脚部３２（被取付部３２）とを有する。該左のシート３０Ｌも同じ構成である。   More specifically, the right seat 30 </ b> R has a leg portion 31 (attached portion 31) on the outer side in the vehicle width direction and a leg portion 32 (attached portion 32) on the vehicle width center side at the rear portion. The left seat 30L has the same configuration.

右のフロアパネル２５Ｒは、右のスペース２８Ｒに位置した左右のシート取付部４２Ｒ，４１Ｒを有する。同様に、左のフロアパネル２５Ｌは、左のスペース２８Ｌに位置した左右のシート取付部４２Ｌ，４１Ｌを有する。これらの全てのシート取付部４１Ｒ，４２Ｒ，４１Ｌ，４２Ｌは、車幅方向に一列に整列している。   The right floor panel 25R includes left and right seat mounting portions 42R and 41R located in the right space 28R. Similarly, the left floor panel 25L includes left and right seat attachment portions 42L and 41L located in the left space 28L. All these seat mounting portions 41R, 42R, 41L, and 42L are aligned in a row in the vehicle width direction.

以下、４つのシート取付部４１Ｒ，４２Ｒ，４１Ｌ，４２Ｌを、次のように定義する。
（１）右のスペース２８Ｒに位置し且つ右のサイドシル２１Ｒに隣接しているシート取付部４１Ｒのことを「右外側シート取付部４１Ｒ」という。
（２）右のスペース２８Ｒに位置し且つフロアトンネル２２に隣接しているシート取付部４２Ｒのことを「右中央側シート取付部４２Ｒ」という。
（３）左のスペース２８Ｌに位置し且つ左のサイドシル２１Ｌに隣接しているシート取付部４１Ｌのことを「左外側シート取付部４１Ｌ」という。
（４）左のスペース２８Ｌに位置し且つフロアトンネル２２に隣接しているシート取付部４２Ｌのことを「左中央側シート取付部４２Ｌ」という。 Hereinafter, the four seat attachment portions 41R, 42R, 41L, and 42L are defined as follows.
(1) The seat mounting portion 41R located in the right space 28R and adjacent to the right side sill 21R is referred to as a “right outer seat mounting portion 41R”.
(2) The seat attachment portion 42R located in the right space 28R and adjacent to the floor tunnel 22 is referred to as a “right center side seat attachment portion 42R”.
(3) The seat attachment portion 41L located in the left space 28L and adjacent to the left side sill 21L is referred to as a “left outer seat attachment portion 41L”.
(4) The seat attachment portion 42L located in the left space 28L and adjacent to the floor tunnel 22 is referred to as a “left center side seat attachment portion 42L”.

次に、車体１１の右半分の構成を説明する。図１、図３、図５及び図６に示されるように、右外側シート取付部４１Ｒと右中央側シート取付部４２Ｒは、右のシート３０Ｒの左右の被取付部３２，３１を取り付ける部分であり、右のフロアパネル２５Ｒの上面２５ａから車室１２へ向かって膨出、つまり右のフロアパネル２５Ｒと一体に形成されている。   Next, the configuration of the right half of the vehicle body 11 will be described. As shown in FIGS. 1, 3, 5, and 6, the right outer seat attachment portion 41 </ b> R and the right center seat attachment portion 42 </ b> R are portions for attaching the left and right attached portions 32 and 31 of the right seat 30 </ b> R. Yes, it bulges from the upper surface 25a of the right floor panel 25R toward the vehicle compartment 12, that is, it is formed integrally with the right floor panel 25R.

右外側シート取付部４１Ｒは、右のサイドシル２１Ｒの内側面から車幅中央へ所定長さ（被取付部３１を載置可能な範囲）にわたって形成されており、上面が平坦面である。該右外側シート取付部４１Ｒの下面には、補強板４３Ｒが重ねられ且つ接合されている。右のシート３０Ｒにおける車幅方向外側の被取付部３１は、右外側シート取付部４１Ｒの上面に載置され、該右外側シート取付部４１Ｒに補強板４３Ｒと共にボルト４４によって締結されている。   The right outer seat mounting portion 41R is formed from the inner side surface of the right side sill 21R to the center of the vehicle width over a predetermined length (a range in which the mounted portion 31 can be placed), and the upper surface is a flat surface. A reinforcing plate 43R is overlapped and joined to the lower surface of the right outer sheet mounting portion 41R. The mounted portion 31 on the outer side in the vehicle width direction of the right seat 30R is placed on the upper surface of the right outer seat mounting portion 41R, and fastened to the right outer seat mounting portion 41R together with the reinforcing plate 43R by bolts 44.

図２、図３及び図７に示されるように、該右外側シート取付部４１Ｒの真下、且つ及び補強板４３の真下には、右のシート取付補強メンバ４５Ｒが配置されている。該右のシート取付補強メンバ４５Ｒ（以下、「外下メンバ４５Ｒ」と略称する。）は、右のサイドシル２１Ｒの下面から右外側シート取付部４１Ｒの車幅中央側の端まで延びた、細長い部材である。該外下メンバ４５Ｒは、車幅方向から見て略上開放ハット状断面に形成されており、右外側シート取付部４１Ｒの下面に重ねられ、且つ該下面に接合されている。車幅方向から見て、該外下メンバ４５Ｒの開口幅は、右外側シート取付部４１Ｒの膨出幅と略同一である。   As shown in FIGS. 2, 3, and 7, a right seat attachment reinforcing member 45 </ b> R is disposed directly below the right outer seat attachment portion 41 </ b> R and directly below the reinforcing plate 43. The right seat attachment reinforcing member 45R (hereinafter abbreviated as “outer lower member 45R”) is an elongated member extending from the lower surface of the right side sill 21R to the vehicle width center side end of the right outer seat attachment portion 41R. It is. The outer lower member 45R is formed in a substantially open hat-shaped cross section when viewed from the vehicle width direction, overlapped with the lower surface of the right outer seat attachment portion 41R, and joined to the lower surface. When viewed from the vehicle width direction, the opening width of the outer lower member 45R is substantially the same as the bulging width of the right outer seat mounting portion 41R.

図３及び図８に示されるように、右中央側シート取付部４２Ｒは、フロアトンネル２２の右側面から右のサイドシル２１Ｒへ向かって所定長さ（被取付部３２を載置可能な範囲）にわたり形成されており、上面が平坦面である。右中央側シート取付部４２Ｒの下面にも、補強板４６Ｒが重ねられ且つ接合されている。該車幅中央側の補強板４６Ｒのことを、適宜「左のシート取付補強メンバ４６Ｒ」又は「内下メンバ４６Ｒ」という。車幅中央側の被取付部３２は、右中央側シート取付部４２Ｒの上面に載置され、該右中央側シート取付部４２Ｒに内下メンバ４６Ｒと共にボルト４７によって締結されている。   As shown in FIGS. 3 and 8, the right center side seat mounting portion 42R extends from the right side surface of the floor tunnel 22 to the right side sill 21R over a predetermined length (a range in which the mounted portion 32 can be placed). The upper surface is a flat surface. The reinforcing plate 46R is also overlapped and joined to the lower surface of the right center side seat mounting portion 42R. The reinforcing plate 46R on the vehicle width center side is appropriately referred to as “left seat mounting reinforcing member 46R” or “inner lower member 46R”. The mounted portion 32 on the vehicle width center side is placed on the upper surface of the right center side seat mounting portion 42R, and is fastened to the right center side seat mounting portion 42R together with the inner and lower members 46R by bolts 47.

図３及び図６に示されるように、右外側シート取付部４１Ｒと右中央側シート取付部４２Ｒとの間には、右のフロア補強メンバ５０Ｒが配置されている。つまり、該右のフロア補強メンバ５０Ｒは、左右のシート取付部４２Ｒ，４１Ｒ間にわたって右のフロアパネル２５Ｒの上面２５ａに重ねられ、且つ該上面に接合されている。   As shown in FIGS. 3 and 6, the right floor reinforcing member 50R is disposed between the right outer seat mounting portion 41R and the right center seat mounting portion 42R. That is, the right floor reinforcing member 50R is overlapped with and joined to the upper surface 25a of the right floor panel 25R across the left and right seat mounting portions 42R and 41R.

図９も参照しつつ、より詳しく述べると、該右のフロア補強メンバ５０Ｒ（以下、「上メンバ５０Ｒ」と略称する。）は、板材の折り曲げ成型品であって、車幅方向から見て略下開放ハット状断面に形成されている。   In more detail with reference to FIG. 9 as well, the right floor reinforcing member 50R (hereinafter abbreviated as “upper member 50R”) is a folded product of a plate material, and is abbreviated when viewed from the vehicle width direction. It is formed in a lower open hat-like cross section.

つまり、該上メンバ５０Ｒは、右のフロアパネル２５Ｒの上面２５ａに重なる前フランジ５１と、該前フランジ５１の後端から上方へ延びて車体前方を向いた縦板状の前板５２と、該前板５２の上端から後方へ延びた横板状の天板５３と、該天板５３の後端から下方へ延びて車体後方を向いた縦板状の後板５４と、該後板５４の下端から後方へ延びた後フランジ５５とからなる、一体成型品である。   That is, the upper member 50R includes a front flange 51 that overlaps the upper surface 25a of the right floor panel 25R, a vertical plate-like front plate 52 that extends upward from the rear end of the front flange 51 and faces the front of the vehicle body, A horizontal plate-like top plate 53 extending rearward from the upper end of the front plate 52, a vertical plate-like rear plate 54 extending downward from the rear end of the top plate 53 and facing the rear of the vehicle body, and the rear plate 54 This is an integrally molded product comprising a rear flange 55 extending rearward from the lower end.

前板５２と天板５３との縁５６のことを「前縁５６」という。天板５３と後板５４との縁５７のことを「後縁５７」という。上メンバ５０Ｒの天板５３には、前縁５６と後縁５７とにそれぞれ沿って車幅方向へ延びた、２つの凸条５８，５８が形成されている。該２つの凸条５８，５８は、天板５３から上に膨出して、車幅方向両端間に延びている。このため、該上メンバ５０Ｒの剛性が高まる。この結果、フロアパネル２５の剛性を高めて、制振性能をより高めることができる。   The edge 56 between the front plate 52 and the top plate 53 is referred to as a “front edge 56”. An edge 57 between the top plate 53 and the rear plate 54 is referred to as a “rear edge 57”. The top plate 53 of the upper member 50R is formed with two ridges 58, 58 extending in the vehicle width direction along the front edge 56 and the rear edge 57, respectively. The two ridges 58, 58 bulge upward from the top plate 53 and extend between both ends in the vehicle width direction. For this reason, the rigidity of the upper member 50R is increased. As a result, the rigidity of the floor panel 25 can be increased and the vibration damping performance can be further increased.

前フランジ５１と後フランジ５５は、右のフロアパネル２５Ｒの上面２５ａに重ねられ、且つ該上面に接合されている。この結果、右のフロアパネル２５Ｒと上メンバ５０Ｒとの組み合わせ構造は、車幅方向から見て、略矩形状の閉断面に形成されている。   The front flange 51 and the rear flange 55 are overlapped with and joined to the upper surface 25a of the right floor panel 25R. As a result, the combined structure of the right floor panel 25R and the upper member 50R is formed in a substantially rectangular closed cross section when viewed from the vehicle width direction.

上メンバ５０Ｒの下面は、右のフロアパネル２５Ｒの上面２５ａに形成されている溝部２５ｂ，２５ｂに沿うように凹凸状に形成されるとともに、該溝部２５ｂ，２５ｂの内面に接合されている。つまり、前フランジ５１と、前板５２の下面と、後板５４の下面と、後フランジ５５とは、右のフロアパネル２５Ｒの上面２５ａ形状及び溝部２５ｂ，２５ｂの形状に合致するように形成されている。このため、溝部２５ｂ，２５ｂの溝深さ分だけ、右のフロアパネル２５Ｒの上面２５ａから天板５３までの高さ、つまり上メンバ５０Ｒの厚みを小さくすることができる。   The lower surface of the upper member 50R is formed in a concavo-convex shape along the groove portions 25b, 25b formed on the upper surface 25a of the right floor panel 25R, and is joined to the inner surfaces of the groove portions 25b, 25b. That is, the front flange 51, the lower surface of the front plate 52, the lower surface of the rear plate 54, and the rear flange 55 are formed to match the shape of the upper surface 25a of the right floor panel 25R and the shapes of the grooves 25b and 25b. ing. For this reason, the height from the upper surface 25a of the right floor panel 25R to the top plate 53, that is, the thickness of the upper member 50R can be reduced by the groove depth of the groove portions 25b, 25b.

右のフロアパネル２５Ｒに対する、上メンバ５０Ｒの車幅方向両端の接合部５０ａ，５０ｂのことを「上メンバ５０Ｒの両端接合部５０ａ，５０ｂ」という。右外側シート取付部４１Ｒに対する、外下メンバ４５Ｒの接合部４５ａ（図３参照）のことを「外側接合部４５ａ」という。右中央側シート取付部４２Ｒに対する、内下メンバ４６Ｒの接合部４６ａのことを「内側接合部４６ａ」という。該上メンバ５０Ｒの両端接合部５０ａ，５０ｂは、外側接合部４５ａと内側接合部４６ａとに、それぞれ少なくとも一部が車体上下方向に重なっている。   The joints 50a and 50b at both ends in the vehicle width direction of the upper member 50R with respect to the right floor panel 25R are referred to as “both joints 50a and 50b of the upper member 50R”. A joint 45a (see FIG. 3) of the outer lower member 45R with respect to the right outer sheet attachment portion 41R is referred to as an “outer joint 45a”. The joint portion 46a of the inner lower member 46R with respect to the right center side seat attachment portion 42R is referred to as an “inner joint portion 46a”. The joint portions 50a and 50b at both ends of the upper member 50R at least partially overlap the outer joint portion 45a and the inner joint portion 46a, respectively, in the vehicle body vertical direction.

このため、左右のシート取付部４２Ｒ，４１Ｒが一体に形成されている右のフロアパネル２５Ｒは、上メンバ５０Ｒと外下メンバ４５Ｒと内下メンバ４６Ｒとによって、車幅方向に連続して補強される。従って、右のフロアパネル２５Ｒの剛性及び制振性能を高めることができる。   For this reason, the right floor panel 25R in which the left and right seat mounting portions 42R, 41R are integrally formed is continuously reinforced in the vehicle width direction by the upper member 50R, the outer lower member 45R, and the inner lower member 46R. The Therefore, the rigidity and vibration control performance of the right floor panel 25R can be improved.

さらには、左右のシート取付部４２Ｒ，４１Ｒは、右のフロアパネル２５Ｒに一体に形成されるとともに、下面を外下メンバ４５Ｒと内下メンバ４６Ｒとによって補強されている。このため、左右のシート取付部４２Ｒ，４１Ｒは、右のシート３０Ｒから作用する荷重を十分に支えることができる。   Furthermore, the left and right seat mounting portions 42R, 41R are integrally formed with the right floor panel 25R, and the lower surface is reinforced by the outer lower member 45R and the inner lower member 46R. For this reason, the left and right seat mounting portions 42R and 41R can sufficiently support the load acting from the right seat 30R.

しかも、左右のシート取付部４２Ｒ，４１Ｒの強度を高めるのに、車室１２側に突出する部分を極力排除することができるので、車室１２の空間をより一層確保でき、乗員の居住性を高めることができる。特に、右のシート３０Ｒの真後ろに位置している、右の中央部シート（図示せず）に着座した乗員の足下の自由度が高まる。   Moreover, in order to increase the strength of the left and right seat mounting portions 42R, 41R, the portion protruding toward the passenger compartment 12 can be eliminated as much as possible, so that the space of the passenger compartment 12 can be further secured and the comfortability of the passengers can be increased. Can be increased. In particular, the degree of freedom of the feet of the occupant seated in the right central seat (not shown) located directly behind the right seat 30R is increased.

次に、車体１１の左半分の構成を説明する。左のシート３０Ｌの左右の被取付部３２，３１の取付構造は、右のシート３０Ｒの左右の被取付部３２，３１の取付構造と、実質的に（基本的に）同じ構成なので、概要だけを説明する。   Next, the configuration of the left half of the vehicle body 11 will be described. The mounting structure of the left and right mounted portions 32, 31 of the left seat 30L is substantially (basically) the same structure as the mounting structure of the left and right mounted portions 32, 31 of the right seat 30R, so only an overview is provided. Will be explained.

図１、図４、図１０及び図１１に示されるように、左外側シート取付部４１Ｌと左中央側シート取付部４２Ｌは、左のシート３０Ｌの左右の被取付部３２，３１を取り付ける部分であり、左のフロアパネル２５Ｌの上面２５ａから車室１２へ向かって膨出、つまり左のフロアパネル２５Ｌと一体に形成されている。   As shown in FIGS. 1, 4, 10, and 11, the left outer seat attachment portion 41 </ b> L and the left center seat attachment portion 42 </ b> L are portions for attaching the left and right attached portions 32 and 31 of the left seat 30 </ b> L. Yes, it bulges from the upper surface 25a of the left floor panel 25L toward the vehicle compartment 12, that is, it is formed integrally with the left floor panel 25L.

左外側シート取付部４１Ｌは、左のサイドシル２１Ｌの内側面から車幅中央へ所定長さ（被取付部３１を載置可能な範囲）にわたって形成されており、上面が平坦面である。該左外側シート取付部４１Ｌの下面には、補強板４３Ｌが重ねられ且つ接合されている。左のシート３０Ｌにおける車幅方向外側の被取付部３１は、左外側シート取付部４１Ｌの上面に載置され、該左外側シート取付部４１Ｌに補強板４３Ｌと共にボルト（図示せず）によって締結されている。   The left outer seat mounting portion 41L is formed from the inner side surface of the left side sill 21L to the center of the vehicle width over a predetermined length (a range in which the mounted portion 31 can be placed), and the upper surface is a flat surface. A reinforcing plate 43L is overlapped and joined to the lower surface of the left outer sheet attachment portion 41L. The mounted portion 31 on the outer side in the vehicle width direction of the left seat 30L is placed on the upper surface of the left outer seat mounting portion 41L, and is fastened to the left outer seat mounting portion 41L together with a reinforcing plate 43L by a bolt (not shown). ing.

図２、図４及び図１２に示されるように、該左外側シート取付部４１Ｌの真下、且つ及び補強板４３Ｌの真下には、シート取付補強メンバ４５Ｌが配置されている。該シート取付補強メンバ４５Ｌ（以下、「外下メンバ４５Ｌ」と略称する。）は、左のサイドシル２１Ｌの下面から左外側シート取付部４１Ｌの車幅中央側の端まで延びた、細長い部材である。該外下メンバ４５Ｌは、車幅方向から見て略上開放ハット状断面（図１０参照）に形成されており、左外側シート取付部４１Ｌの下面に重ねられ、且つ該下面に接合されている。車幅方向から見て、該外下メンバ４５Ｌの開口幅は、左外側シート取付部４１Ｌの膨出幅と略同一である。   As shown in FIGS. 2, 4, and 12, a seat attachment reinforcing member 45 </ b> L is disposed directly below the left outer seat attachment portion 41 </ b> L and directly below the reinforcement plate 43 </ b> L. The seat attachment reinforcing member 45L (hereinafter abbreviated as “outer lower member 45L”) is an elongated member that extends from the lower surface of the left side sill 21L to the vehicle width center side end of the left outer seat attachment portion 41L. . The outer lower member 45L is formed to have a substantially open hat-like cross section (see FIG. 10) when viewed from the vehicle width direction, overlapped with the lower surface of the left outer seat attachment portion 41L, and joined to the lower surface. . When viewed from the vehicle width direction, the opening width of the outer lower member 45L is substantially the same as the bulging width of the left outer seat attachment portion 41L.

図４及び図１３に示されるように、左中央側シート取付部４２Ｌは、フロアトンネル２２の左側面から左のサイドシル２１Ｌへ向かって所定長さ（被取付部３２を載置可能な範囲）にわたり形成されており、上面が平坦面である。左中央側シート取付部４２Ｌの下面にも、補強板４６Ｌが重ねられ且つ接合されている。該車幅中央側の補強板４６Ｌのことを、適宜「左のシート取付補強メンバ４６Ｌ」又は「内下メンバ４６Ｌ」という。車幅中央側の被取付部３２は、左中央側シート取付部４２Ｌの上面に載置され、該左中央側シート取付部４２Ｌに内下メンバ４６Ｌと共にボルト（図示せず）によって締結されている。   As shown in FIGS. 4 and 13, the left center side seat mounting portion 42L extends from the left side surface of the floor tunnel 22 toward the left side sill 21L over a predetermined length (a range in which the mounted portion 32 can be placed). The upper surface is a flat surface. The reinforcing plate 46L is also overlapped and joined to the lower surface of the left center side seat attachment portion 42L. The reinforcing plate 46L on the vehicle width center side is appropriately referred to as a “left seat mounting reinforcing member 46L” or an “inner lower member 46L”. The mounted portion 32 on the vehicle width center side is placed on the upper surface of the left center side seat mounting portion 42L, and is fastened to the left center side seat mounting portion 42L together with the inner and lower members 46L by bolts (not shown). .

図４、図１０及び図１１に示されるように、左外側シート取付部４１Ｌと左中央側シート取付部４２Ｌとの間には、左のフロア補強メンバ５０Ｌが配置されている。つまり、該左のフロア補強メンバ５０Ｌは、左右のシート取付部４２Ｌ，４１Ｌ間にわたって左のフロアパネル２５Ｌの上面２５ａに重ねられ、且つ該上面に接合されている。   As shown in FIGS. 4, 10, and 11, the left floor reinforcing member 50 </ b> L is disposed between the left outer seat attachment portion 41 </ b> L and the left center seat attachment portion 42 </ b> L. That is, the left floor reinforcing member 50L is overlapped with and joined to the upper surface 25a of the left floor panel 25L across the left and right seat mounting portions 42L and 41L.

図１４も参照しつつ、より詳しく述べると、該左のフロア補強メンバ５０Ｌ（以下、「上メンバ５０Ｌ」と略称する。）は、板材の折り曲げ成型品であって、車幅方向から見て略下開放ハット状断面に形成されている。該左の上メンバ５０Ｌは、上記右の上メンバ５０Ｒ（図９参照）と実質的に同じ断面構造であり、説明を省略する。   In more detail with reference to FIG. 14 as well, the left floor reinforcing member 50L (hereinafter, abbreviated as “upper member 50L”) is a folded product of a plate material, and is abbreviated when viewed from the vehicle width direction. It is formed in a lower open hat-like cross section. The left upper member 50L has substantially the same cross-sectional structure as the right upper member 50R (see FIG. 9), and a description thereof will be omitted.

前フランジ５１と後フランジ５５は、左のフロアパネル２５Ｌの上面２５ａに重ねられ、且つ該上面に接合されている。この結果、左のフロアパネル２５Ｌと上メンバ５０Ｌとの組み合わせ構造は、車幅方向から見て、略矩形状の閉断面に形成されている。   The front flange 51 and the rear flange 55 overlap the upper surface 25a of the left floor panel 25L and are joined to the upper surface. As a result, the combined structure of the left floor panel 25L and the upper member 50L is formed in a substantially rectangular closed cross section when viewed from the vehicle width direction.

上メンバ５０Ｌの下面は、左のフロアパネル２５Ｌの上面２５ａに形成されている溝部２５ｂ，２５ｂに沿うように凹凸状に形成されるとともに、該溝部２５ｂ，２５ｂの内面に接合されている。つまり、前フランジ５１と、前板５２の下面と、後板５４の下面と、後フランジ５５とは、左のフロアパネル２５Ｌの上面２５ａ形状及び溝部２５ｂ，２５ｂの形状に合致するように形成されている。このため、溝部２５ｂ，２５ｂの溝深さ分だけ、左のフロアパネル２５Ｌの上面２５ａから天板５３までの高さ、つまり上メンバ５０Ｌの厚みを小さくすることができる。   The lower surface of the upper member 50L is formed in a concavo-convex shape along the groove portions 25b and 25b formed on the upper surface 25a of the left floor panel 25L, and is joined to the inner surfaces of the groove portions 25b and 25b. That is, the front flange 51, the lower surface of the front plate 52, the lower surface of the rear plate 54, and the rear flange 55 are formed so as to match the shape of the upper surface 25a of the left floor panel 25L and the shapes of the grooves 25b and 25b. ing. For this reason, the height from the upper surface 25a of the left floor panel 25L to the top plate 53, that is, the thickness of the upper member 50L can be reduced by the groove depth of the groove portions 25b, 25b.

左のフロアパネル２５Ｌに対する、上メンバ５０Ｌの車幅方向両端の接合部５０ａ，５０ｂのことを「上メンバ５０Ｌの両端接合部５０ａ，５０ｂ」という。左外側シート取付部４１Ｌに対する、外下メンバ４５Ｌの接合部４５ａのことを「外側接合部４５ａ」という。左中央側シート取付部４２Ｌに対する、内下メンバ４６Ｌの接合部４６ａのことを「内側接合部４６ａ」という。該上メンバ５０Ｌの両端接合部５０ａ，５０ｂは、外側接合部４５ａと内側接合部４６ａとに、それぞれ少なくとも一部が、それぞれ車体上下方向に重なっている。   The joint portions 50a and 50b at both ends in the vehicle width direction of the upper member 50L with respect to the left floor panel 25L are referred to as “both end joint portions 50a and 50b of the upper member 50L”. The joint portion 45a of the outer lower member 45L with respect to the left outer sheet attachment portion 41L is referred to as an “outer joint portion 45a”. The joint portion 46a of the inner lower member 46L with respect to the left center side seat attachment portion 42L is referred to as an “inner joint portion 46a”. The both end joint portions 50a and 50b of the upper member 50L at least partially overlap the outer joint portion 45a and the inner joint portion 46a, respectively, in the vertical direction of the vehicle body.

このため、左右のシート取付部４１Ｌ，４２Ｌが一体に形成されている左のフロアパネル２５Ｌは、上メンバ５０Ｌと外下メンバ４５Ｌと内下メンバ４６Ｌとによって、車幅方向に連続して補強される。従って、左のフロアパネル２５Ｌの剛性及び制振性能を高めることができる。   Therefore, the left floor panel 25L in which the left and right seat mounting portions 41L and 42L are integrally formed is continuously reinforced in the vehicle width direction by the upper member 50L, the outer lower member 45L, and the inner lower member 46L. The Accordingly, the rigidity and vibration control performance of the left floor panel 25L can be improved.

さらには、左右のシート取付部４１Ｌ，４２Ｌは、左のフロアパネル２５Ｌに一体に形成されるとともに、下面を外下メンバ４５Ｌと内下メンバ４６Ｌとによって補強されている。このため、左右のシート取付部４１Ｌ，４２Ｌは、左のシート３０Ｌから作用する荷重を十分に支えることができる。   Furthermore, the left and right seat mounting portions 41L and 42L are integrally formed with the left floor panel 25L, and the lower surface is reinforced by the outer lower member 45L and the inner lower member 46L. For this reason, the left and right seat mounting portions 41L and 42L can sufficiently support the load acting from the left seat 30L.

しかも、左右のシート取付部４１Ｌ，４２Ｌの強度を高めるのに、車室１２側に突出する部分を極力排除することができるので、車室１２の空間をより一層確保でき、乗員の居住性を高めることができる。特に、左のシート３０Ｌの真後ろに位置している、左の中央部シート（図示せず）に着座した乗員の足下の自由度が高まる。   Moreover, in order to increase the strength of the left and right seat mounting portions 41L, 42L, the portion protruding toward the passenger compartment 12 can be eliminated as much as possible, so that the space of the passenger compartment 12 can be further secured and the occupant's comfortability can be increased. Can be increased. In particular, the degree of freedom of the feet of the occupant seated on the left central seat (not shown) located directly behind the left seat 30L is increased.

図１０及び図１１に示されるように、車体１１の左側には、複数のブレーキ操作用ワイヤケーブル６１，６１が車体前後方向に通っている。該複数のワイヤケーブル６１，６１は、車室１２に設けられている図示せぬブレーキペダルやパーキングブレーキレバーの操作力をブレーキ（図示せず）に伝える部材である。   As shown in FIGS. 10 and 11, on the left side of the vehicle body 11, a plurality of brake operation wire cables 61, 61 pass in the vehicle longitudinal direction. The plurality of wire cables 61 and 61 are members that transmit an operating force of a brake pedal and a parking brake lever (not shown) provided in the vehicle compartment 12 to a brake (not shown).

左のフロアパネル２５Ｌには、上メンバ５０Ｌの直前の位置に貫通したケーブル挿通孔２５ｃ，２５ｃが形成されている。該複数のワイヤケーブル６１，６１の長手方向の前半部は、左のフロアパネル２５Ｌの上面２５ａに沿ってケーブル挿通孔２５ｃ，２５ｃまで延びるとともに、該ケーブル挿通孔２５ｃ，２５ｃを通って左のフロアパネル２５Ｌの下方へ延びている。該ケーブル挿通孔２５ｃ，２５ｃを通った後の、該複数のワイヤケーブル６１，６１の長手方向の後半部は、左のフロアパネル２５Ｌの下面に沿っている。   The left floor panel 25L is formed with cable insertion holes 25c and 25c that pass through the position immediately before the upper member 50L. The front half of the plurality of wire cables 61, 61 in the longitudinal direction extends to the cable insertion holes 25c, 25c along the upper surface 25a of the left floor panel 25L, and passes through the cable insertion holes 25c, 25c to the left floor. The panel 25L extends downward. After passing through the cable insertion holes 25c, 25c, the rear half portions of the plurality of wire cables 61, 61 are along the lower surface of the left floor panel 25L.

図１５及び図１６も参照しつつ説明すると、該複数のワイヤケーブル６１，６１は、左のフロアパネル２５Ｌの下面にワイヤ止め部材６２によって止められている。該ワイヤ止め部材６２は、左右のシート取付補強メンバ４５Ｌ，４６Ｌのなかの一方、つまり左のシート取付補強メンバ４５Ｌ（左の外下メンバ４５Ｌ）に重ねられる、重ね合わせ部６２ａを有する。該重ね合わせ部６２ａは、左のシート取付補強メンバ４５Ｌと共に左のフロアパネル２５Ｌの下面に接合されている。   15 and 16, the plurality of wire cables 61 and 61 are fixed to the lower surface of the left floor panel 25L by a wire fixing member 62. The wire fixing member 62 has an overlapping portion 62a that overlaps one of the left and right seat mounting reinforcement members 45L and 46L, that is, the left seat mounting reinforcement member 45L (left outer lower member 45L). The overlapping portion 62a is joined to the lower surface of the left floor panel 25L together with the left seat mounting reinforcing member 45L.

この場合に、該ワイヤ止め部材６２を、左のシート取付補強メンバ４５Ｌと共に左のフロアパネル２５Ｌの下面に接合している。この結果、上メンバ５０Ｌの補強作用を、左のシート取付補強メンバ４５Ｌを介してワイヤ止め部材６２によって補助することができる。従って、左のフロアパネル２５Ｌの剛性を高めて、制振性能をより高めることができる。   In this case, the wire fixing member 62 is joined to the lower surface of the left floor panel 25L together with the left seat mounting reinforcing member 45L. As a result, the reinforcing action of the upper member 50L can be assisted by the wire fixing member 62 via the left seat attachment reinforcing member 45L. Therefore, the rigidity of the left floor panel 25L can be increased, and the vibration control performance can be further increased.

左のフロアパネル２５Ｌの上面２５ａのなかの、ワイヤ止め部材６２の位置の近傍の部位は、上記溝部２５ｂ，２５ｂを有していない略平坦面である。上メンバ５０Ｌの下面は、左のフロアパネル２５Ｌの上面２５ａの平坦部分（略平坦面）に沿うように形成されるとともに、該略平坦面に接合されている。   A portion of the upper surface 25a of the left floor panel 25L in the vicinity of the position of the wire fixing member 62 is a substantially flat surface not having the groove portions 25b and 25b. The lower surface of the upper member 50L is formed along the flat portion (substantially flat surface) of the upper surface 25a of the left floor panel 25L, and is joined to the substantially flat surface.

左のフロアパネル２５Ｌのなかの、ワイヤ止め部材６２の位置の近傍の部位が平坦面なので、ワイヤ止め部材６２によってワイヤケーブル６１，６１を止めやすい。さらに、上メンバ５０Ｌの下面は、略平坦面に沿うように形成されるとともに、該略平坦面に接合されている。このため、ワイヤ止め部材６２によってワイヤケーブル６１，６１を左のフロアパネル２５Ｌに止める構成であっても、上メンバ５０Ｌによって左のフロアパネル２５Ｌを適切に補強することができる。   Since the portion of the left floor panel 25L in the vicinity of the position of the wire stopper member 62 is a flat surface, the wire cables 61 and 61 can be easily stopped by the wire stopper member 62. Further, the lower surface of the upper member 50L is formed along a substantially flat surface and is joined to the substantially flat surface. For this reason, even if it is the structure which stops the wire cables 61 and 61 to the left floor panel 25L by the wire stopper member 62, the left floor panel 25L can be appropriately reinforced by the upper member 50L.

本発明の車体構造は、乗用車等の車両１０の車体１１において、左右のシート３０Ｌ，３０Ｒを取り付ける部分に採用するのに好適である。   The vehicle body structure of the present invention is suitable for use in a portion of the vehicle body 11 of the vehicle 10 such as a passenger car where the left and right seats 30L and 30R are attached.

１０…車両、１１…車体、２５Ｌ，２５Ｒ…フロアパネル、２５ａ…上面、２５ｂ…溝部、２５ｃ…ケーブル挿通孔、３０Ｌ，３０Ｒ…シート、３１，３２…被取付部、４１Ｌ，４１Ｒ，４２Ｌ，４２Ｒ…シート取付部、４５Ｌ，４５Ｒ，４６Ｌ，４６Ｒ…シート取付補強メンバ、４５ａ，４６ａ…シート取付部に対するシート取付補強メンバの接合部、５０Ｌ，５０Ｒ…フロア補強メンバ、５０ａ，５０ｂ…フロアパネルに対するフロア補強メンバの接合部、５６…前縁、５７…後縁、５８…凸条、６１…ブレーキ操作用ワイヤケーブル、６２…ワイヤ止め部材、６２ａ…重ね合わせ部。   DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11 ... Vehicle body, 25L, 25R ... Floor panel, 25a ... Top surface, 25b ... Groove part, 25c ... Cable insertion hole, 30L, 30R ... Sheet, 31, 32 ... Mounted part, 41L, 41R, 42L, 42R ... Seat attachment part, 45L, 45R, 46L, 46R ... Sheet attachment reinforcement member, 45a, 46a ... Joint part of sheet attachment reinforcement member to sheet attachment part, 50L, 50R ... Floor reinforcement member, 50a, 50b ... Floor to floor panel Joining portion of reinforcing member, 56 ... front edge, 57 ... rear edge, 58 ... convex line, 61 ... wire cable for brake operation, 62 ... wire stopper member, 62a ... overlapping portion.

Claims (5)

フロアパネルと一体に形成され、シートの左右の被取付部を取り付けるための左右のシート取付部と、
該左右のシート取付部間にわたって前記フロアパネルの上面に重ねられ、且つ該上面に接合されたフロア補強メンバと、
前記左右のシート取付部の下面に重ねられ、且つ該下面に接合された左右のシート取付補強メンバとを含み、
前記フロアパネルに対する前記フロア補強メンバの接合部と、前記左右のシート取付部に対する前記左右のシート取付補強メンバの接合部とは、それぞれ少なくとも一部が車体上下方向に重なっており、
車体前後方向に通るブレーキ操作用ワイヤケーブルを前記フロアパネルの下面に止めるためのワイヤ止め部材を、更に有し、
該ワイヤ止め部材は、左右のシート取付補強メンバのなかの一方のシート取付補強メンバに重ねられる、重ね合わせ部を有し、
該重ね合わせ部は、前記一方のシート取付補強メンバと共に前記フロアパネルの下面に接合されていることを特徴とする車体構造。 The left and right seat mounting portions that are formed integrally with the floor panel and for mounting the left and right mounted portions of the seat,
A floor reinforcing member which is superimposed on the upper surface of the floor panel and joined to the upper surface between the left and right seat mounting portions;
Including left and right seat mounting reinforcement members that are superimposed on the lower surfaces of the left and right seat mounting portions and joined to the lower surfaces;
At least a part of the joint portion of the floor reinforcing member to the floor panel and the joint portion of the left and right seat mounting reinforcement members to the left and right seat mounting portions overlap each other in the vehicle body vertical direction ,
A wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel;
The wire fastening member has an overlapping portion that is overlapped with one of the left and right seat mounting reinforcement members.
The overlapping structure is joined to the lower surface of the floor panel together with the one sheet mounting reinforcement member . 前記フロアパネルの上面には、車体前後方向に溝部が形成され、
前記フロア補強メンバの下面は、前記溝部に沿うように形成されるとともに、該溝部に接合されていることを特徴とする請求項１記載の車体構造。 On the upper surface of the floor panel, a groove is formed in the longitudinal direction of the vehicle body,
2. The vehicle body structure according to claim 1, wherein a lower surface of the floor reinforcing member is formed along the groove and joined to the groove. 前記フロア補強メンバには、該フロア補強メンバの前縁と後縁とにそれぞれ沿って車幅方向へ延びた、２つの凸条が形成されていることを特徴とする請求項１又は請求項２記載の車体構造。   The said floor reinforcement member is formed with two ridges extending in the vehicle width direction along the front edge and the rear edge of the floor reinforcement member, respectively. Body structure described. 前記フロアパネルの上面のなかの、前記ワイヤ止め部材の位置の近傍の部位は、前記溝部を有していない略平坦面であり、A portion of the upper surface of the floor panel in the vicinity of the position of the wire fixing member is a substantially flat surface not having the groove portion,
前記フロア補強メンバの下面は、前記略平坦面に沿うように形成されるとともに、該略平坦面に接合されていることを特徴とする請求項２記載の車体構造。The vehicle body structure according to claim 2, wherein a lower surface of the floor reinforcing member is formed along the substantially flat surface and joined to the substantially flat surface. フロアパネルと一体に形成され、シートの左右の被取付部を取り付けるための左右のシート取付部と、
該左右のシート取付部間にわたって前記フロアパネルの上面に重ねられ、且つ該上面に接合されたフロア補強メンバと、
前記左右のシート取付部の下面に重ねられ、且つ該下面に接合された左右のシート取付補強メンバとを含み、
前記フロアパネルに対する前記フロア補強メンバの接合部と、前記左右のシート取付部に対する前記左右のシート取付補強メンバの接合部とは、それぞれ少なくとも一部が車体上下方向に重なっており、
前記フロアパネルの上面には、車体前後方向に溝部が形成され、
前記フロア補強メンバの下面は、前記溝部に沿うように形成されるとともに、該溝部に接合されており、
車体前後方向に通るブレーキ操作用ワイヤケーブルを前記フロアパネルの下面に止めるためのワイヤ止め部材を、更に有し、
前記フロアパネルの上面のなかの、前記ワイヤ止め部材の位置の近傍の部位は、前記溝部を有していない略平坦面であり、
前記フロア補強メンバの下面は、前記略平坦面に沿うように形成されるとともに、該略平坦面に接合されていることを特徴とする車体構造。 The left and right seat mounting portions that are formed integrally with the floor panel and for mounting the left and right mounted portions of the seat,
A floor reinforcing member which is superimposed on the upper surface of the floor panel and joined to the upper surface between the left and right seat mounting portions;
Including left and right seat mounting reinforcement members that are superimposed on the lower surfaces of the left and right seat mounting portions and joined to the lower surfaces;
At least a part of the joint portion of the floor reinforcing member to the floor panel and the joint portion of the left and right seat mounting reinforcement members to the left and right seat mounting portions overlap each other in the vehicle body vertical direction,
On the upper surface of the floor panel, a groove is formed in the longitudinal direction of the vehicle body,
The lower surface of the floor reinforcing member is formed along the groove and is joined to the groove.
A wire stopper member for stopping a brake operation wire cable passing in the longitudinal direction of the vehicle body on the lower surface of the floor panel;
A portion of the upper surface of the floor panel in the vicinity of the position of the wire fixing member is a substantially flat surface not having the groove portion,
The lower surface of the floor reinforcing member, the car body structure, characterized in that while being formed along the said generally flat surface is bonded to the symbolic flat surface.
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