JP2006088884A - Floor structure for automobile - Google Patents

Floor structure for automobile Download PDF

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Publication number
JP2006088884A
JP2006088884A JP2004277054A JP2004277054A JP2006088884A JP 2006088884 A JP2006088884 A JP 2006088884A JP 2004277054 A JP2004277054 A JP 2004277054A JP 2004277054 A JP2004277054 A JP 2004277054A JP 2006088884 A JP2006088884 A JP 2006088884A
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floor panel
disposed
vehicle
floor
member portion
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Satoru Ishikawa
哲 石川
Hiroto Suzuki
尋仁 鈴木
Yoshitaka Sawada
義孝 沢田
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Daihatsu Motor Co Ltd
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Daihatsu Motor Co Ltd
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Priority to JP2004277054A priority Critical patent/JP2006088884A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor structure for an automobile, capable of lowering the height of a floor panel, while securing impact absorbing performance in case of rear-end collision, and facilitating putting in and out luggage. <P>SOLUTION: The floor panel 5 is disposed on a right and a left side members 2 extended in the longitudinal direction of a vehicle, and comprising front member parts 16 and rear member parts 17 provided continuously with the front member parts, and bent upward, and a lower side part for a back door opening 1a is formed to extend in the car width direction at the right and the left rear member parts 17 in this floor structure for an automobile. The floor panel 5 is formed continuously to be flat from a front floor panel 5a to a rear floor panel 5b. The front floor panel 5a is disposed on upper surfaces of the front member parts 16, and the rear floor panel 5b is disposed on lower surfaces of the rear member parts 17. A lower back 13 is disposed on the lower surface of the rear floor panel 5b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、車両前後方向に延びる左,右のサイドメンバにフロアパネルを配設し、該左,右のサイドメンバの後端部に車幅方向に延びるロアバックを配設した自動車のフロア構造に関する。   The present invention relates to a vehicle floor structure in which floor panels are provided on left and right side members extending in the longitudinal direction of a vehicle, and a lower back extending in a vehicle width direction is provided at rear ends of the left and right side members. .

一般に、バックドアを備えた自動車では、リヤフロアパネルのリヤシートより後方部分を荷台として利用するようにしている(例えば、特許文献1参照)。ところでこの種の自動車では、リヤフロアパネルがフロントフロアパネルより一段高い位置にあることから、バックドア開口からの荷物の出し入れが不便であり、また天井までの荷室寸法が上記段の分だけ小さくなるという問題がある。   Generally, in an automobile equipped with a back door, a rear portion of a rear floor panel is used as a loading platform (see, for example, Patent Document 1). By the way, in this kind of car, the rear floor panel is located one step higher than the front floor panel, so it is inconvenient to put in and out the luggage from the back door opening, and the size of the luggage compartment to the ceiling is reduced by the amount of the above steps. There is a problem.

ここで、荷室の拡大等を図るためにリヤフロアパネルを低床化することが考えられる。この場合、単にリヤフロアパネルの位置をサイドメンバのリヤメンバ部とともに下げると、同種の車両に後突された場合であっても上記リヤメンバ部が衝突車両のサイドメンバより下方にオフセットしている可能性が高くなり、衝撃力を十分に吸収することができず、耐後突性能が低下するという問題が生じる。   Here, it is conceivable to lower the rear floor panel in order to enlarge the cargo compartment. In this case, simply lowering the position of the rear floor panel together with the rear member portion of the side member may cause the rear member portion to be offset downward from the side member of the collision vehicle even if it is rear-projected by the same type of vehicle. As a result, the impact force cannot be sufficiently absorbed, and there arises a problem that the rear-end collision performance is lowered.

このため、例えば、特許文献2では、リヤメンバ部をリヤフロアパネルの上面に配置し、左,右のリヤメンバ部をバックドア開口の下辺部を形成するロアバックで結合した構造としている。
実開昭60−170272号公報 特開2001−30951号公報
For this reason, for example, in Patent Document 2, the rear member portion is disposed on the upper surface of the rear floor panel, and the left and right rear member portions are coupled by a lower back that forms the lower side portion of the back door opening.
Japanese Utility Model Publication No. 60-170272 JP 2001-30951 A

ところが、上記従来公報では、ロアバックがリヤフロアパネル上に位置していることから、このロアバックが荷物を出し入れする際に邪魔になり、低床化の効果が得られないという問題がある。   However, since the lower back is located on the rear floor panel in the above-mentioned conventional publication, there is a problem that the lower back becomes an obstacle when loading and unloading luggage, and the effect of lowering the floor cannot be obtained.

本発明は、上記実情に鑑みてなされたもので、フロアパネルの低床化を図る場合に、後突時の衝撃力の吸収性能を確保できるとともに、荷物の出し入れを容易に行える自動車のフロア構造を提供することを目的としている。   The present invention has been made in view of the above circumstances, and when reducing the floor panel, it is possible to secure a shock absorbing performance at the time of a rear impact and to easily take in and out a luggage. The purpose is to provide.

請求項1の発明は、車両前後方向に延び、フロントメンバ部と該フロントメンバ部に連続して設けられ、上方に屈曲形成されたリヤメンバ部とを有する左,右のサイドメンバにフロアパネルを配設し、上記左,右のリヤメンバ部に車幅方向に延びてバックドア開口の下辺部を形成するロアバックを配設した自動車のフロア構造において、上記フロアパネルをフロントフロアパネルからリヤフロアパネルに渡って連続する略平坦なフラット形状とし、上記フロントフロアパネルを上記フロントメンバ部の上面に接合し、上記リヤフロアパネルを上記リヤメンバ部の下面に接合し、さらに上記ロアバックを上記リヤフロアパネルの下面に配置するか、あるいは該リヤフロアパネルの上面と略連続面をなすよう配置したことを特徴としている。   According to the first aspect of the present invention, floor panels are arranged on left and right side members that extend in the vehicle front-rear direction, and have a front member portion and a rear member portion that is provided continuously with the front member portion and is bent upward. In a vehicle floor structure in which a lower back that extends in the vehicle width direction and forms a lower side portion of a back door opening is disposed on the left and right rear member portions, the floor panel is extended from the front floor panel to the rear floor panel. Whether the front floor panel is joined to the upper surface of the front member portion, the rear floor panel is joined to the lower surface of the rear member portion, and the lower back is disposed on the lower surface of the rear floor panel. Alternatively, the rear floor panel is arranged so as to be substantially continuous with the upper surface of the rear floor panel.

請求項2の発明は、請求項1において、上記左,右のリヤメンバ部と上記ロアバックとは両者の間に配設されたガセットを介して結合されていることを特徴としている。   According to a second aspect of the present invention, in the first aspect, the left and right rear member portions and the lower back are coupled to each other via a gusset disposed therebetween.

請求項3の発明は、請求項1又は2において、上記左,右のリヤメンバ部の後端面はバックドアにより覆われており、該バックドア内の上記後端面に対向する部分には車両後方からの衝撃力を吸収する衝撃吸収部材が配設されていることを特徴としている。   According to a third aspect of the present invention, in the first or second aspect, the rear end surfaces of the left and right rear member portions are covered with a back door, and a portion of the back door facing the rear end surface is provided from the rear of the vehicle. An impact absorbing member that absorbs the impact force is disposed.

請求項1の発明に係るフロア構造によれば、フロアパネルをフロントフロアパネルからリヤフロアパネルに渡って連続する略フラット形状としたので、リヤフロアパネルがフロントフロアパネルと同じ高さ位置となり、それだけ荷室を拡大できるとともに、荷物の出し入れを容易に行うことができる。   According to the floor structure of the first aspect of the present invention, since the floor panel has a substantially flat shape extending from the front floor panel to the rear floor panel, the rear floor panel is at the same height as the front floor panel, so that the cargo space is increased accordingly. Can be enlarged, and the loading and unloading of the luggage can be performed easily.

またバックドア開口下辺部を形成するロアバックをリヤフロアパネルの下面に、又は連続面をなすように配置したので、リヤフロアパネルをバックドア開口に連続させることができ、ロアバックが荷物の出し入れの邪魔になることはなく、荷室の使い勝手を高めることができる。   In addition, the lower back that forms the lower side of the back door opening is arranged on the lower surface of the rear floor panel or so as to form a continuous surface, so that the rear floor panel can be continued to the back door opening, and the lower back interferes with loading and unloading of luggage. There is nothing, and the convenience of the cargo space can be improved.

本発明では、フロントフロアパネルをフロントメンバ部の上面に配置し、リヤフロアパネルをリヤメンバ部の下面に配置したので、フロアパネル全体のフラット化を図りながら、車両後突時の衝撃力吸収性能を確保できる。即ち、サイドメンバのリヤメンバ部を位置を下げることなくフロアパネルをフラットにすることができるため、同種の車両であれば上記リヤメンバ部と衝突車両のサイドメンバとが略同じ高さに位置している可能性が高くなり、衝突時の衝撃力を吸収でき、耐衝突性能を確保できる。   In the present invention, the front floor panel is arranged on the upper surface of the front member portion, and the rear floor panel is arranged on the lower surface of the rear member portion, so that the impact force absorbing performance at the time of rear-end collision of the vehicle is ensured while the entire floor panel is flattened. it can. That is, since the floor panel can be flattened without lowering the position of the rear member portion of the side member, the rear member portion and the side member of the collision vehicle are located at substantially the same height in the case of the same type of vehicle. The possibility increases, the impact force at the time of collision can be absorbed, and anti-collision performance can be secured.

請求項2の発明では、リヤメンバ部とロアバックとをガセットを介して結合したので、リヤメンバ部に対してロアバックを下方にオフセット配置する場合のバックドア開口の下辺部の剛性を確保することができる。また後突時の衝撃力をリヤメンバ部とロアバックとで負担することができ、衝撃力の吸収性能をより高めることができる。   In the invention of claim 2, since the rear member portion and the lower back are coupled via the gusset, it is possible to ensure the rigidity of the lower side portion of the back door opening when the lower back is offset from the rear member portion. Further, the impact force at the time of rear impact can be borne by the rear member portion and the lower back, and the impact force absorption performance can be further enhanced.

請求項3の発明では、バックドア内のリヤメンバ部の後端面に対向する部分に車両後方からの衝撃力を吸収する部材を配設したので、該部材が後突時のエネルギーを吸収しつつサイドメンバに伝達することとなり、衝撃力の吸収性能をより一層向上できる。   In the third aspect of the present invention, the member that absorbs the impact force from the rear of the vehicle is disposed in the portion of the back door that faces the rear end surface of the rear member portion. It is transmitted to the member, and the impact force absorption performance can be further improved.

以下、本発明の実施の形態を添付図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図1及び図2は、本発明の一実施形態(第1実施形態)による自動車のフロア構造を説明するための図であり、図1は本実施形態のフロア構造が適用された車体の概略斜視図、図2は上記車体のリヤフロア部分の側面図である。   1 and 2 are views for explaining a floor structure of an automobile according to an embodiment (first embodiment) of the present invention. FIG. 1 is a schematic perspective view of a vehicle body to which the floor structure of the present embodiment is applied. FIG. 2 is a side view of the rear floor portion of the vehicle body.

図において、1はワンボックス型自動車の車体を示しており、これは車両前後方向に延びる左,右のサイドメンバ2,2に左,右のサイドパネル3,3を配設し、該左,右のサイドパネル3の上端間にルーフパネル4を配設するとともに、下端部間にフロアパネル5を配設して車室を形成した概略構造を有している。   In the figure, reference numeral 1 denotes a vehicle body of a one-box type automobile, which has left and right side panels 3 and 3 disposed on left and right side members 2 and 2 extending in the longitudinal direction of the vehicle. A roof panel 4 is disposed between the upper ends of the right side panel 3, and a floor panel 5 is disposed between the lower ends of the right side panel 3 to form a vehicle compartment.

上記左,右のサイドパネル3に形成されたフロントドア開口3a,リヤドア開口3bにはそれぞれ不図示のフロントドア,リヤドアが開閉可能に配設され、さらに左,右のサイドパネル3の前,後下端部に形成されたホイールハウス3c,3d内にはそれぞれ前輪6,後輪7が配設されている。   The front door opening 3a and the rear door opening 3b formed in the left and right side panels 3 are respectively provided with a front door and a rear door (not shown) that can be opened and closed, and further, front and rear of the left and right side panels 3 respectively. Front wheels 6 and rear wheels 7 are disposed in the wheel houses 3c and 3d formed at the lower ends, respectively.

上記フロアパネル5の前側には左,右一対のフロントシート8,8が、中央部には左,右一対のリヤシート9,9がそれぞれ搭載されており、該フロアパネル5のリヤシート9の後方が荷室10となっている。   A pair of left and right front seats 8 and 8 are mounted on the front side of the floor panel 5, and a pair of left and right rear seats 9 and 9 are mounted on the center, respectively. It is a luggage compartment 10.

また上記フロアパネル5の前端とフロントガラス(不図示)との間にはインストルメントパネル11が配設されており、該インストルメントパネル11は車室とエンジン室とを画成するダッシュパネル(不図示)に取付けられている。   An instrument panel 11 is disposed between the front end of the floor panel 5 and a windshield (not shown). The instrument panel 11 is a dash panel (not shown) that defines a vehicle compartment and an engine compartment. Attached).

上記車体1の後端面にはバックドア開口1aが形成されており、該バックドア開口1aには該ドア開口1aを開閉するバックドア15が配設されている。このバックドア15はドアインナ15aとドアアウタ15bとを中空状をなすようにヘミング結合した構造を有している。   A back door opening 1a is formed on the rear end surface of the vehicle body 1, and a back door 15 for opening and closing the door opening 1a is disposed in the back door opening 1a. The back door 15 has a structure in which a door inner 15a and a door outer 15b are hemmed so as to form a hollow shape.

上記バックドア開口1aの左,右側辺部はピラー部材11,11により形成され、上辺部は左,右のピラー部材11の上端間に架け渡して結合されたルーフクロス部材12により形成され、下辺部は左,右のピラー部材11の下端間に架け渡して結合されたロアバック13により形成されている。   The left and right side portions of the back door opening 1a are formed by pillar members 11 and 11, and the upper side portion is formed by a roof cross member 12 that is bridged between the upper ends of the left and right pillar members 11, and is connected to the lower side. The portion is formed by a lower back 13 that is bridged and joined between the lower ends of the left and right pillar members 11.

上記サイドメンバ2は左右対称となっており、フロントメンバ部16と、該フロントメンバ部16に連続して設けられたリヤメンバ部17とを有している。このリヤメンバ部17の本体部17cはフロントメンバ部16の本体部16cに対して上方に位置するように屈曲形成されている。   The side member 2 is bilaterally symmetric and includes a front member portion 16 and a rear member portion 17 provided continuously to the front member portion 16. The main body portion 17c of the rear member portion 17 is bent so as to be positioned above the main body portion 16c of the front member portion 16.

上記フロントメンバ部16は、車両前端部16aと、該前端部16aから斜め下方に傾斜する傾斜部16bと、該傾斜部16bの下端から後方に直線状に延びるフロントメンバ本体部16cとから構成されている。   The front member portion 16 includes a vehicle front end portion 16a, an inclined portion 16b inclined obliquely downward from the front end portion 16a, and a front member main body portion 16c extending linearly rearward from the lower end of the inclined portion 16b. ing.

上記リヤメンバ部17は、上記フロントメンバ本体部16cに続いて後方に直線状に延びる直線部17aと、該直線部17aから斜め上方に傾斜する傾斜部17bと、該傾斜部17bの上端から後方に直線状に延びるリヤメンバ本体部17cとから構成されている。   The rear member portion 17 includes a straight portion 17a linearly extending rearward after the front member main body portion 16c, an inclined portion 17b inclined obliquely upward from the straight portion 17a, and a rear side from the upper end of the inclined portion 17b. The rear member main body portion 17c extends linearly.

上記フロアパネル5は、フロントフロアパネル5aからリヤフロアパネル5bに渡って連続する略平坦なフラット形状となっている。つまりリヤフロアは5bはフロントフロアパネル5aと同じ高さに位置している。ここで、少なくともリヤシート9下方のリヤフロントパネル5b部分をフロントフロアパネル5aに連続するフラット形状としてもよい。   The floor panel 5 has a substantially flat flat shape extending from the front floor panel 5a to the rear floor panel 5b. That is, the rear floor 5b is located at the same height as the front floor panel 5a. Here, at least a portion of the rear front panel 5b below the rear seat 9 may be a flat shape that is continuous with the front floor panel 5a.

上記フロアパネル5の左側部,右側部には、それぞれ前後方向に延びる一対のシートレール18,18,19,19が敷設されており、各シートレール18,19にはそれぞれ上記フロントシート8,リヤシート9が前後方向に移動可能に,かつ任意の位置にロック可能に搭載されている。上記各シートレール18,19の後端はバックドア開口1aから外方に開放されている。これにより各シート8,9はバックドア開口1aから車両外方に取り外し可能となっており、またバックドア開口1aから3列目のシート(不図示)を搭載することも可能となっている。   A pair of seat rails 18, 18, 19, 19 extending in the front-rear direction are laid on the left side and the right side of the floor panel 5. The front seat 8 and the rear seat are respectively provided on the seat rails 18, 19. 9 is mounted so that it can move in the front-rear direction and can be locked at any position. The rear ends of the seat rails 18 and 19 are opened outward from the back door opening 1a. Accordingly, the seats 8 and 9 can be removed from the back door opening 1a to the outside of the vehicle, and a third row of seats (not shown) can be mounted from the back door opening 1a.

上記フロントフロアパネル5aは左,右のフロントメンバ部16の上面に、リヤフロアパネル5bは左,右のリヤメンバ部17の下面にそれぞれ溶接により接合されている。具体的には、リヤフロアパネル5bの前半部はリヤメンバ部17の直線部17aの上面に配置され、後半部は傾斜部17bにて反転してリヤメンバ部17の本体部17cの下面に配置されている。ここで、リヤメンバ部17は全長に渡って一体形成してもよく、あるいは直線部17aと本体部17cとをリヤフロアパネル5bを挟むように上,下に分割して配置してもよい。   The front floor panel 5a is joined to the upper surfaces of the left and right front member portions 16 and the rear floor panel 5b is joined to the lower surfaces of the left and right rear member portions 17 by welding. Specifically, the front half portion of the rear floor panel 5b is disposed on the upper surface of the straight portion 17a of the rear member portion 17, and the rear half portion is inverted by the inclined portion 17b and disposed on the lower surface of the main body portion 17c of the rear member portion 17. . Here, the rear member portion 17 may be integrally formed over the entire length, or the linear portion 17a and the main body portion 17c may be divided and arranged above and below so as to sandwich the rear floor panel 5b.

上記バックドア15のドアインナ15aの下端部には凹部15cが形成されている。この凹部15cはバックドア15の車幅方向全長に渡って形成してもよいし、あるいは上記リヤメンバ部17の本体部17cに臨む部分のみに形成してもよい。また上記リヤメンバ部17の本体部17cには上記凹部15c内に位置するよう延長された延長部17dが一体形成されている。   A recess 15 c is formed at the lower end of the door inner 15 a of the back door 15. The concave portion 15c may be formed over the entire length of the back door 15 in the vehicle width direction, or may be formed only in a portion facing the main body portion 17c of the rear member portion 17. An extension portion 17d extended so as to be positioned in the recess 15c is integrally formed with the main body portion 17c of the rear member portion 17.

上記ロアバック13は、上方に開口する横断面ハット状のものであり、上記リヤフロアパネル5bの後端部下面に配置され、該リヤフロアパネル5bを上記延長部17dとで挟むように溶接により接合されている。これにより車両後方からの入力Fをリヤメンバ部17とロアバック13とで受けるようになっている。   The lower back 13 has a hat-like cross section that opens upward, is disposed on the lower surface of the rear end of the rear floor panel 5b, and is joined by welding so as to sandwich the rear floor panel 5b with the extension 17d. Yes. As a result, the input F from the rear of the vehicle is received by the rear member portion 17 and the lower back 13.

本実施形態のフロア構造によれば、フロアパネル5をフロントフロアパネル5aからリヤフロアパネル5bに渡って連続するフラット形状としたので、リヤフロアパネル5bがフロントフロアパネル5aと同じ低所に位置することとなり、それだけ荷室10を拡大できるとともに、バックドア開口1aから荷物の出し入れを容易に行うことができる。   According to the floor structure of the present embodiment, the floor panel 5 has a flat shape continuous from the front floor panel 5a to the rear floor panel 5b, and therefore the rear floor panel 5b is located at the same low position as the front floor panel 5a. Thus, the cargo compartment 10 can be enlarged, and the luggage can be easily taken in and out from the back door opening 1a.

また本実施形態では、バックドア開口1aの下辺部を形成するロアバック13をリヤフロアパネル5bの後端部下面に配置したので、リヤフロアパネル5bをバックドア開口1aに連続させることができ、ロアバック13が荷物の出し入れの邪魔になることはなく、荷室10の使い勝手を高めることができる。特に商用タイプの自動車に適用した場合には、作業性を向上できる。   In the present embodiment, since the lower back 13 that forms the lower side of the back door opening 1a is disposed on the lower surface of the rear end of the rear floor panel 5b, the rear floor panel 5b can be continuous with the back door opening 1a. There is no hindrance to loading and unloading, and the usability of the luggage compartment 10 can be improved. In particular, when applied to a commercial type automobile, workability can be improved.

本実施形態では、上記フロントフロアパネル5aをフロントメンバ部16の上面に接合し、リヤフロアパネル5bの後半部をリヤメンバ部17の本体部17cの下面に接合したので、フロアパネル5全体のフラット化を図りながら、車両後突時の衝撃力吸収性能を確保できる。即ち、左,右のサイドメンバ2,2のリヤメンバ部17の本体部17cを低所に位置させることなくフロアパネル5全体をフラットにすることができるので、同種の車両であれば上記リヤメンバ本体部7dが衝突車両のサイドメンバと同じ高さに位置している可能性が高く、衝突時の衝撃荷重をリヤメンバ本体部17cからサイドメンバ2全体に位置でき、耐衝突性能を確保できる。   In the present embodiment, the front floor panel 5a is joined to the upper surface of the front member portion 16, and the rear half of the rear floor panel 5b is joined to the lower surface of the main body portion 17c of the rear member portion 17, so that the entire floor panel 5 is flattened. While aiming, it is possible to ensure the impact force absorption performance at the time of rear-end collision of the vehicle. That is, the entire floor panel 5 can be flattened without positioning the main body portion 17c of the rear member portion 17 of the left and right side members 2 and 2 at a low position. There is a high possibility that 7d is located at the same height as the side member of the collision vehicle, and the impact load at the time of the collision can be located from the rear member main body portion 17c to the entire side member 2 and the collision resistance performance can be ensured.

本実施形態では、バックドア15に凹部15cを形成し、該凹部15c内に上記リヤメンバ部17の延長部17dを挿入配置したので、後突時の衝撃力を瞬時にリヤメンバ部17からサイドメンバ2全体に伝達することができ、ロアバック13をリヤメンバ部17の下方に配置しながら衝撃力吸収性能を十分に確保することができる。   In the present embodiment, the recess 15c is formed in the back door 15, and the extension 17d of the rear member portion 17 is inserted into the recess 15c, so that the impact force at the time of rear impact is instantaneously applied from the rear member portion 17 to the side member 2. It is possible to transmit to the whole, and the shock absorbing performance can be sufficiently secured while the lower back 13 is disposed below the rear member portion 17.

また上記ロアバック13をリヤフロアパネル5bとともに上記延長部17dに溶接により接合したので、後突時の衝撃力をリヤメンバ部17とロアバック13とで受けることができ、衝撃力の吸収性能をより一層高めることができる。   Further, since the lower back 13 is joined to the extension portion 17d together with the rear floor panel 5b by welding, the impact force at the time of rear impact can be received by the rear member portion 17 and the lower back 13, and the impact force absorption performance is further enhanced. Can do.

図3ないし図9は、それぞれ本発明の第2〜第5実施形態によるフロア構造を説明するための図であり、図中、図2と同一符号は同一又は相当部分を示す。   3 to 9 are diagrams for explaining floor structures according to second to fifth embodiments of the present invention, respectively, in which the same reference numerals as those in FIG. 2 denote the same or corresponding parts.

図3は、本発明の第2実施形態によるフロア構造を示している。本実施形態は、リヤメンバ部17の本体部17cの下面とロアバック13とを、両者17c,13の間に配設されたガセット20を介して結合した例である。   FIG. 3 shows a floor structure according to a second embodiment of the present invention. The present embodiment is an example in which the lower surface of the main body portion 17c of the rear member portion 17 and the lower back 13 are coupled via a gusset 20 disposed between both the portions 17c and 13.

本第2実施形態では、リヤメンバ部17とロアバック13とをガセット20を介して結合したので、リヤメンバ部17に対してロアバック13を下方にオフセットさせて配置しながらバックドア開口1aの下辺部の剛性を確保することができる。また後突時の衝撃力をリヤメンバ部17,ガセット20及びロアバック13で負担することができ、衝撃力の吸収性能をより高めることができる。   In the second embodiment, since the rear member portion 17 and the lower back 13 are coupled via the gusset 20, the lower back portion of the back door opening 1a is rigid while being arranged with the lower back 13 being offset downward with respect to the rear member portion 17. Can be secured. Further, the impact force at the time of rear impact can be borne by the rear member portion 17, the gusset 20 and the lower back 13, and the impact force absorption performance can be further enhanced.

図4は、上記第2実施形態の変形例を示しており、これはリヤメンバ部17の本体部17cにロアバック13の左,右端面を覆うガセット部17eを一体形成し、該ガセット部17eとロアバック13を結合した例である。この例においても、第2実施形態と同様の効果が得られる。   FIG. 4 shows a modification of the second embodiment, which is formed by integrally forming a gusset portion 17e covering the left and right end surfaces of the lower back 13 on the main body portion 17c of the rear member portion 17, and the gusset portion 17e and the lower back. 13 is an example in which 13 are combined. Also in this example, the same effect as the second embodiment can be obtained.

図5及び図6は、本発明の第3実施形態によるフロア構造を示している。本実施形態は、バックドア15内の、左,右のリヤメンバ部17の後端面に対向する部分に車両後方からの衝撃吸収部材として機能する閉断面部材21を配設した例である。この閉断面部材21は、前後方向に開口する直方体状の角筒体21aの前,後縁にそれぞれ複数の前,後フランジ21b,21cを切り起こして形成されており、各前フランジ21bはドアインナ15aに、各後フランジ21cはドアアウタ15bに結合されている。   5 and 6 show a floor structure according to a third embodiment of the present invention. This embodiment is an example in which a closed cross-section member 21 that functions as an impact absorbing member from the rear of the vehicle is disposed in a portion of the back door 15 facing the rear end surfaces of the left and right rear member portions 17. The closed cross-section member 21 is formed by cutting and raising a plurality of front and rear flanges 21b and 21c at the front and rear edges of a rectangular parallelepiped rectangular tube 21a that opens in the front-rear direction, and each front flange 21b is a door inner. 15a, each rear flange 21c is coupled to the door outer 15b.

またロアバック13はリヤフロアパネル5bと連続面をなすように配置されており、該リヤフロアパネル5bの後フランジ5cは上記ロアバック13に接合されている。   The lower back 13 is disposed so as to form a continuous surface with the rear floor panel 5 b, and the rear flange 5 c of the rear floor panel 5 b is joined to the lower back 13.

本第3実施形態では、バックドア15内のリヤメンバ部17の後端面に対向する部分に車両後方からの衝撃力を吸収する閉断面部材21を配設したので、閉断面部材21が後突時のエネルギーを吸収しつつサイドメンバ2に伝達することとなり、衝撃力の吸収性能をより一層向上できる。   In the third embodiment, since the closed cross-section member 21 that absorbs the impact force from the rear of the vehicle is disposed in a portion of the back door 15 that faces the rear end surface of the rear member portion 17, the closed cross-section member 21 is This is transmitted to the side member 2 while absorbing the energy, and the impact force absorption performance can be further improved.

図7及び図8は、本発明の第4実施形態によるフロア構造を示している。本実施形態は、左,右のリヤメンバ部17の延長部17dに下方に延びる結合部17fを一体形成し、この左,右の結合部17f,17f間にロアバック13を架け渡して結合した例である。   7 and 8 show a floor structure according to a fourth embodiment of the present invention. This embodiment is an example in which a connecting portion 17f extending downward is integrally formed with the extension portion 17d of the left and right rear member portions 17, and the lower back 13 is bridged between the left and right connecting portions 17f and 17f. is there.

本第4実施形態によれば、左,右のリヤメンバ部17に下方に延びる結合部17fを形成し、左,右の結合部17f間にロアバック13を結合したので、後突時の衝撃力をリヤメンバ部17とロアバック13とで負担することができ、第2実施形態と同様の効果が得られる。   According to the fourth embodiment, the left and right rear member portions 17 are formed with the connecting portions 17f extending downward, and the lower back 13 is connected between the left and right connecting portions 17f. The rear member portion 17 and the lower back 13 can bear the load, and the same effect as in the second embodiment can be obtained.

図9は、本発明の第5実施形態によるフロア構造を示している。本実施形態は、左,右のリヤメンバ部17の本体部17cを、直線部17aに対して車内側に偏位させて形成し、左,右の本体部17cの外側に後輪7,7を配置した例である。この場合には、後輪7の配置スペースを容易に確保することができる。   FIG. 9 shows a floor structure according to a fifth embodiment of the present invention. In the present embodiment, the main body portion 17c of the left and right rear member portions 17 is formed to be deviated toward the vehicle inner side with respect to the straight portion 17a, and the rear wheels 7 and 7 are provided outside the left and right main body portions 17c. This is an example of arrangement. In this case, the arrangement space for the rear wheel 7 can be easily secured.

本発明の第1実施形態によるフロア構造を説明するための自動車の車体の概略斜視図である。1 is a schematic perspective view of a vehicle body for explaining a floor structure according to a first embodiment of the present invention. 上記車体のリヤフロア部分の側面図である。It is a side view of the rear floor part of the said vehicle body. 本発明の第2実施形態によるフロア構造を示す側面図である。It is a side view which shows the floor structure by 2nd Embodiment of this invention. 上記第2実施形態の変形例を示す側面図である。It is a side view which shows the modification of the said 2nd Embodiment. 本発明の第3実施形態によるフロア構造を示す側面図である。It is a side view which shows the floor structure by 3rd Embodiment of this invention. 上記第3実施形態の閉断面部材の斜視図である。It is a perspective view of the closed cross-section member of the said 3rd Embodiment. 本発明の第4実施形態によるフロア構造を示す斜視図である。It is a perspective view which shows the floor structure by 4th Embodiment of this invention. 上記第4実施形態のフロア構造の側面図である。It is a side view of the floor structure of the fourth embodiment. 本発明の第5実施形態によるフロア構造を示す平面図である。It is a top view which shows the floor structure by 5th Embodiment of this invention.

符号の説明Explanation of symbols

1a バックドア開口
2 サイドメンバ
5 フロアパネル
5a フロントフロアパネル
5b リヤフロアパネル
13 ロアバック
15 バックドア
16 フロントメンバ部
17 リヤメンバ部
17e ガセット部
20 ガセット
21 閉断面部材 (衝撃吸収部材)
DESCRIPTION OF SYMBOLS 1a Back door opening 2 Side member 5 Floor panel 5a Front floor panel 5b Rear floor panel 13 Lower back 15 Back door 16 Front member part 17 Rear member part 17e Gusset part 20 Gusset 21 Close cross-section member (impact-absorbing member)

Claims (3)

車両前後方向に延び、フロントメンバ部と該フロントメンバ部に連続して設けられ、上方に屈曲形成されたリヤメンバ部とを有する左,右のサイドメンバにフロアパネルを配設し、上記左,右のリヤメンバ部に車幅方向に延びてバックドア開口の下辺部を形成するロアバックを配設した自動車のフロア構造において、上記フロアパネルをフロントフロアパネルからリヤフロアパネルに渡って連続する略平坦なフラット形状とし、上記フロントフロアパネルを上記フロントメンバ部の上面に接合し、上記リヤフロアパネルを上記リヤメンバ部の下面に接合し、さらに上記ロアバックを上記リヤフロアパネルの下面に配置するか、あるいは該リヤフロアパネルの上面と略連続面をなすよう配置したことを特徴とする自動車のフロア構造。   A floor panel is disposed on the left and right side members extending in the longitudinal direction of the vehicle, having a front member portion and a rear member portion continuously provided on the front member portion and bent upward. In a vehicle floor structure in which a lower back that extends in the vehicle width direction and forms a lower side portion of a back door opening is disposed in a rear member portion of the vehicle, the floor panel is a substantially flat flat shape that continues from the front floor panel to the rear floor panel. The front floor panel is joined to the upper surface of the front member portion, the rear floor panel is joined to the lower surface of the rear member portion, and the lower back is disposed on the lower surface of the rear floor panel, or the upper surface of the rear floor panel An automobile floor structure characterized by being arranged so as to form a substantially continuous surface. 請求項1において、上記左,右のリヤメンバ部と上記ロアバックとは両者の間に配設されたガセットを介して結合されていることを特徴とする自動車のフロア構造。   2. The automobile floor structure according to claim 1, wherein the left and right rear member portions and the lower back are coupled to each other via a gusset disposed therebetween. 請求項1又は2において、上記左,右のリヤメンバ部の後端面はバックドアにより覆われており、該バックドア内の上記後端面に対向する部分には車両後方からの衝撃力を吸収する衝撃吸収部材が配設されていることを特徴とする自動車のフロア構造。   3. The rear end surface of the left and right rear member portions according to claim 1 or 2 is covered with a back door, and a portion of the back door facing the rear end surface absorbs an impact force from the rear of the vehicle. An automobile floor structure comprising an absorbing member.
JP2004277054A 2004-09-24 2004-09-24 Floor structure for automobile Withdrawn JP2006088884A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014008835A (en) * 2012-06-28 2014-01-20 Toyota Motor Corp Vehicle rear part structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014008835A (en) * 2012-06-28 2014-01-20 Toyota Motor Corp Vehicle rear part structure

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