JP6733272B2 - Vehicle floor structure - Google Patents

Vehicle floor structure Download PDF

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Publication number
JP6733272B2
JP6733272B2 JP2016077771A JP2016077771A JP6733272B2 JP 6733272 B2 JP6733272 B2 JP 6733272B2 JP 2016077771 A JP2016077771 A JP 2016077771A JP 2016077771 A JP2016077771 A JP 2016077771A JP 6733272 B2 JP6733272 B2 JP 6733272B2
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width direction
vehicle width
floor
floor panel
wheel house
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JP2017185958A (en
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佳士 寺尾
佳士 寺尾
利次 三崎
利次 三崎
博康 竹下
博康 竹下
陽一 久間
陽一 久間
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Priority to PH12017000083A priority patent/PH12017000083B1/en
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Description

本発明は車両のフロア構造に関する。 The present invention relates to a vehicle floor structure.

特許文献１には、フロアパネルとホイールハウスとを接合する車両のフロア構造が開示されている。
特許文献１では、フロアパネルは、車幅方向に延在する床部と、床部から起立しホイールハウスに接合される起立部とを有している。
サイドメンバは、フロアパネルの下方で車幅方向両側にそれぞれ配置され、車幅方向の内側に位置する内側面と車幅方向の外側に位置する外側面とを有し上方が開放されている。
床部の車幅方向両側に各サイドメンバの内側面が接合され、起立部に各サイドメンバの外側面が接合され、起立部はサイドメンバの外側面と共にホイールハウスに接合されている。
そして、フロアパネルと各サイドメンバとでそれぞれ閉断面構造が形成され、サイドメンバの外側面と内側面との間に位置するフロアパネルの部分に上方に突出する段差部を設けることで、上記閉断面構造の面積を大きく確保してフロアパネルの剛性を高めている。 Patent Document 1 discloses a vehicle floor structure in which a floor panel and a wheel house are joined together.
In Patent Document 1, the floor panel has a floor portion extending in the vehicle width direction, and a standing portion that stands up from the floor portion and is joined to the wheel house.
The side members are arranged below the floor panel on both sides in the vehicle width direction, and each has an inner side surface located inside the vehicle width direction and an outside surface located outside the vehicle width direction, and the side members are open above.
The inner surface of each side member is joined to both sides of the floor in the vehicle width direction, the outer surface of each side member is joined to the upright portion, and the upright portion is joined to the wheel house together with the outer surface of the side member.
A closed cross-section structure is formed by the floor panel and each side member, and a step portion protruding upward is provided at a portion of the floor panel located between the outer side surface and the inner side surface of the side member. The rigidity of the floor panel is enhanced by ensuring a large area for the sectional structure.

実公平７−４２９２６号公報Japanese Utility Model Publication No. 7-42926

ところで、ホイールハウスは、車輪を懸架するサスペンション装置を支持する箇所となっており、サスペンション装置を介して入力した荷重はホイールハウスとフロアパネルとの接合箇所に加わる。
一方、サイドメンバ１２の剛性は、起立部１００４を含むフロアパネル１０の車幅方向の端部の剛性よりも高い。
したがって、ホイールハウス１４の側面１４０２に入力した荷重により、サイドメンバ１２の弾性変形に伴うサイドメンバの外側面１２０４の変位に追従してフロアパネル１０が弾性変形しようとする。
この場合、上記従来技術は、段差部を設けることで車幅方向端部のフロアパネルの剛性を高めており、フロアパネルの起立部はサイドメンバの外側面１２０４に追従して変位しにくくなっている。
そのため、互いに溶接されたサイドメンバの外側面１２０４とフロアパネルの起立部との間には、ホイールハウス１４に荷重が入力される毎にせん断力が作用し、ホイールハウスとフロアパネルとの接合箇所の耐久性を高める上で改善の余地がある。
そこで、ホイールハウスの板厚を厚くしたり、あるいは、ホイールハウスとフロアパネルとの接合箇所に別の補強部材を設けることで接合箇所の耐久性の向上を図ることが考えられる。
しかしながら、このような従来構造では、車体の重量を抑制し、コストダウンを図る上で不利がある。
本発明は、上記事情に鑑みなされたものであり、車体の重量を抑制すると共にコストダウンを図りつつ、ホイールハウスとフロアパネルとの接合箇所の耐久性の向上を図る上で有利な車両のフロア構造を提供することを目的とする。 By the way, the wheel house serves as a portion that supports a suspension device that suspends wheels, and a load input through the suspension device is applied to a joint portion between the wheel house and the floor panel.
On the other hand, the rigidity of the side member 12 is higher than the rigidity of the end portion of the floor panel 10 including the standing portion 1004 in the vehicle width direction.
Therefore, the load applied to the side surface 1402 of the wheel house 14 causes the floor panel 10 to elastically deform following the displacement of the outer surface 1204 of the side member due to the elastic deformation of the side member 12.
In this case, in the above-described conventional technique, the stepped portion is provided to increase the rigidity of the floor panel at the end portion in the vehicle width direction, and the standing portion of the floor panel is less likely to be displaced following the outer surface 1204 of the side member. There is.
Therefore, a shearing force acts between the outer side surface 1204 of the side member and the upright portion of the floor panel welded to each other each time a load is input to the wheel house 14, and the joint between the wheel house and the floor panel is joined. There is room for improvement in increasing durability.
Therefore, it is conceivable to increase the durability of the wheel house by increasing the plate thickness of the wheel house or providing another reinforcing member at the site of the wheel house and the floor panel.
However, such a conventional structure is disadvantageous in suppressing the weight of the vehicle body and reducing the cost.
The present invention has been made in view of the above circumstances, and is a floor of a vehicle that is advantageous in improving the durability of the joint between the wheel house and the floor panel while suppressing the weight of the vehicle body and reducing the cost. It is intended to provide a structure.

上記目的を達成するために、本発明は、車幅方向に延在する床部と、前記床部から起立しホイールハウスに接合される起立部とを有するフロアパネルと、前記フロアパネルの下方で車幅方向両側にそれぞれ配置され、車幅方向の内側に位置する内側面と車幅方向の外側に位置する外側面とを有し上方が開放されたサイドメンバとを備え、前記床部の車幅方向両側に前記各サイドメンバの内側面が接合され、前記フロアパネルの車幅方向両側に前記起立部と共にホイールハウスに前記各サイドメンバの外側面が接合され、前記フロアパネルと各サイドメンバとでそれぞれ閉断面構造を形成している車両のフロア構造であって、前記内側面が接合された箇所よりも車幅方向外側の前記床部の箇所に、車幅方向に間隔をおいた箇所からそれぞれ前記床部の厚さ方向に前記床部よりも下方に突出する２つの側壁を含む下方に凸の下向きビード部と前記床部よりも上方に突出する２つの側壁を含む上方に凸の上向きビード部が前後方向に延在形成され、前記上向きビード部は、前記下向きビード部の車幅方向内側に設けられることを特徴とする。 In order to achieve the above object, the present invention, a floor panel having a floor portion extending in the vehicle width direction, an upright portion standing upright from the floor portion and joined to a wheel house, and below the floor panel. A vehicle having the floor portion, the vehicle being provided on both sides in the vehicle width direction, and having side members having an inner side surface located on the inner side in the vehicle width direction and an outer surface located on the outer side in the vehicle width direction and having an open upper side; Inner side surfaces of the side members are joined to both sides in the width direction, and outer surfaces of the side members are joined to the wheel house together with the upright portions on both sides in the vehicle width direction of the floor panel, and the floor panel and the side members are joined together. In the floor structure of the vehicle forming a closed cross-sectional structure, respectively, at a location on the floor portion outside the vehicle width direction outside the location where the inner surface is joined, from a location spaced in the vehicle width direction. Downward convex bead portion including two side walls projecting downward from the floor portion in the thickness direction of the floor portion and upward convex upward projection including two sidewalls projecting upward from the floor portion A bead portion is formed to extend in the front-rear direction, and the upward bead portion is provided inside the vehicle width direction of the downward bead portion .

本発明によれば、荷重がサスペンション装置を介してホイールハウスに入力すると、入力した荷重はホイールハウスとフロアパネルの起立部との接合箇所に加わることでフロアパネルが弾性変形しようとする。
この際、２つの壁部を含むビード部がフロアパネルの変形時の伸び代として機能し、ホイールハウスに入力された荷重により、２つの壁部を含むビード部が弾性変形する。
すなわち、フロアパネルの起立部がホイールハウスに追従して変位し、ホイールハウスとフロアパネルの起立部との接合箇所に加わるせん断力が軽減される。
したがって、車体の重量増加を抑制しつつコストダウンを図りつつ、ホイールハウスとフロアパネルとの接合箇所の耐久性の向上を図る上で有利となる。
また、本発明によれば、フロアパネルとサイドメンバとで形成される閉断面構造の面積を減少させ、床部の幅方向の端部の剛性を弱める。また、ビード部を構成する壁部がフロアパネルの変形時の伸び代として機能する。これらにより、フロアパネルの起立部をホイールハウスに追従させて変位しやすくし、ホイールハウスとフロアパネルの起立部との接合箇所に加わるせん断力を軽減しやすくする。
また、本発明によれば、下向きビード部と上向きビード部との双方がフロアパネルの変形時の伸び代として機能するため、フロアパネルの起立部をホイールハウスに追従させてより変位しやすくし、ホイールハウスとフロアパネルの起立部との接合箇所に加わるせん断力をより軽減しやすくする。 According to the present invention, when a load is input to the wheel house via the suspension device, the input load is applied to the joint portion between the wheel house and the rising portion of the floor panel, so that the floor panel tends to elastically deform.
At this time, the bead portion including the two wall portions functions as an extension margin when the floor panel is deformed, and the bead portion including the two wall portions elastically deforms due to the load input to the wheel house.
That is, the standing portion of the floor panel is displaced following the wheel house, and the shearing force applied to the joint between the wheel house and the standing portion of the floor panel is reduced.
Therefore, it is advantageous in improving the durability of the joint portion between the wheel house and the floor panel while suppressing the increase in the weight of the vehicle body and reducing the cost.
Further , according to the present invention, the area of the closed sectional structure formed by the floor panel and the side member is reduced, and the rigidity of the widthwise end of the floor is weakened. Further, the wall portion forming the bead portion functions as an expansion allowance when the floor panel is deformed. As a result, the standing portion of the floor panel is made to follow the wheel house and is easily displaced, and the shearing force applied to the joint portion between the wheel house and the standing portion of the floor panel is easily reduced.
Further , according to the present invention, both the downward bead portion and the upward bead portion function as an expansion allowance when the floor panel is deformed, so that the standing portion of the floor panel is more easily displaced by following the wheel house, It is easier to reduce the shearing force applied to the joint between the wheel house and the standing part of the floor panel.

ホイールハウスとフロアパネルとの接合部分の斜視図である。It is a perspective view of the joining part of a wheel house and a floor panel. ホイールハウスに接合されるフロアパネル部分の斜視図である。It is a perspective view of the floor panel part joined to a wheel house. 上下方向および車幅方向を通る平面でフロアパネルおよびサイドメンバ部分を切断した断面図である。FIG. 3 is a cross-sectional view in which a floor panel and a side member portion are cut along a plane that passes through a vertical direction and a vehicle width direction. 上下方向および車幅方向を通る平面で第２の実施の形態のフロアパネルおよびサイドメンバ部分を切断した断面図である。It is sectional drawing which cut|disconnected the floor panel and side member part of 2nd Embodiment by the plane which passes an up-down direction and the vehicle width direction. 上下方向および車幅方向を通る平面で第３の実施の形態のフロアパネルおよびサイドメンバ部分を切断した断面図である。It is sectional drawing which cut|disconnected the floor panel and side member part of 3rd Embodiment by the plane which passes an up-down direction and the vehicle width direction.

（第１の実施の形態）
以下、本発明の実施の形態について図面を参照して説明する。
なお、以下の図面において、符号ＦＲは車両前方を示し、符号ＵＰは車両上方を示し、符号ＩＮは車幅方向内側を示し、符号ＯＵＴは車幅方向外側を示す。
図１から図３に示すように、車両のフロア構造は、フロアパネル１０と、サイドメンバ１２と、ホイールハウス１４と、ビード部１６とを含んで構成されている。
フロアパネル１０は、車幅方向に延在する床部１００２と、床部１００２から起立しホイールハウス１４に接合される起立部１００４とを有している。
床部１００２の複数箇所には、上方に凸のビード部１００６が車両の前後方向に延在形成され、床部１００２の剛性が高められている。
サイドメンバ１２は、フロアパネル１０の下方で車幅方向両側にそれぞれ配置されている。
サイドメンバ１２は、車幅方向の内側に位置する内側面１２０２と車幅方向の外側に位置する外側面１２０４とを有し上方が開放されている。
各サイドメンバ１２の内側面１２０２は床部１００２の車幅方向両側に接合され、本実施の形態では、内側面１２０２の上端のフランジ１２０２Ａが床部１００２に接合されている。
また、各サイドメンバ１２の外側面１２０４は、フロアパネル１０の車幅方向両側に接合され、本実施の形態では、外側面１２０４は、起立部１００４とホイールハウス１４の側面１４０２に接合されている。
そして、フロアパネル１０と各サイドメンバ１２とでそれぞれ閉断面構造が形成されている。
ホイールハウス１４は、車輪の車幅方向内側に位置する側面１４０２と、車輪の上方に位置する上面１４０４とを含んで構成され、車輪を覆うと共に、車輪を懸架するサスペンション装置を支持する箇所となっており、サスペンション装置を介して荷重が入力する部分となっている。 (First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the following drawings, reference numeral FR indicates the front of the vehicle, reference UP indicates the upper side of the vehicle, reference IN indicates the inside in the vehicle width direction, and reference OUT indicates the outside in the vehicle width direction.
As shown in FIGS. 1 to 3, the floor structure of the vehicle includes a floor panel 10, side members 12, a wheel house 14, and a bead portion 16.
The floor panel 10 has a floor portion 1002 extending in the vehicle width direction, and a standing portion 1004 standing upright from the floor portion 1002 and joined to the wheel house 14.
A plurality of bead portions 1006, which are convex upward, are formed to extend in the front-rear direction of the vehicle at a plurality of locations on the floor portion 1002, and the rigidity of the floor portion 1002 is enhanced.
The side members 12 are arranged below the floor panel 10 on both sides in the vehicle width direction.
The side member 12 has an inner side surface 1202 located on the inner side in the vehicle width direction and an outer side surface 1204 located on the outer side in the vehicle width direction, and is open at the top.
The inner side surface 1202 of each side member 12 is joined to both sides of the floor portion 1002 in the vehicle width direction, and in the present embodiment, the flange 1202A at the upper end of the inner side surface 1202 is joined to the floor portion 1002.
Further, the outer side surface 1204 of each side member 12 is joined to both sides of the floor panel 10 in the vehicle width direction, and in the present embodiment, the outer side surface 1204 is joined to the standing portion 1004 and the side surface 1402 of the wheel house 14. ..
The floor panel 10 and each side member 12 form a closed cross-section structure.
The wheel house 14 is configured to include a side surface 1402 located on the inner side in the vehicle width direction of the wheel and an upper surface 1404 located above the wheel. The wheel house 14 covers the wheel and serves as a location for supporting a suspension device that suspends the wheel. The load is input through the suspension device.

内側面１２０２のフランジ１２０２Ａが接合された箇所よりも車幅方向外側の床部１００２の箇所に、車幅方向に間隔をおいた箇所からそれぞれ床部１００２の厚さ方向に突出する２つの壁部を含むビード部１６が車両前後方向に延在形成されている。
このビード部１６は、ホイールハウス１４の側面１４０２がフロアパネル１０に接合される箇所において、接合される箇所の車両前後方向のほぼ全長にわたる長さで形成されている。 Two wall portions projecting in the thickness direction of the floor portion 1002 from locations spaced apart in the vehicle width direction at locations on the floor portion 1002 on the outer side in the vehicle width direction of the location where the flange 1202A of the inner side surface 1202 is joined. A bead portion 16 including is formed extending in the vehicle front-rear direction.
The bead portion 16 is formed at a portion where the side surface 1402 of the wheel house 14 is joined to the floor panel 10 and has a length that extends over substantially the entire length in the vehicle front-rear direction of the joined portion.

ビード部１６は、下方に凸の下向きビード部１８と、上方に凸の上向きビード部２０とを含んで構成されている。
下向きビード部１８は、下方に突出する２つの側壁１８０２、１８０４を含んで構成されている。詳細には、下向きビード部１８は、車幅方向内側に位置する内側壁１８０２と、車幅方向外側に位置する外側壁１８０４と、それら側壁１８０２、１８０４を接続する底壁１８０６とで構成されている。
本実施の形態では、外側壁１８０４は、起立部１００４と同一面上を延在し起立部１００４に連続している。したがって、サイドメンバ１２の外側面１２０４が起立部１００４とホイールハウス１４の側面１４０２に接合されているため、外側壁１８０４もサイドメンバ１２の外側面１２０４とホイールハウス１４に接合されており、詳細には、外側壁１８０４および起立部１００４の車幅方向外側にサイドメンバ１２の外側面１２０４が位置し、外側面１２０４の外側にホイールハウス１４の側面１４０２が位置し、それらが接合されている。 The bead portion 16 includes a downward bead portion 18 which is convex downward and an upward bead portion 20 which is convex upward.
The downward bead portion 18 is configured to include two side walls 1802 and 1804 protruding downward. Specifically, the downward bead portion 18 includes an inner side wall 1802 located on the inner side in the vehicle width direction, an outer side wall 1804 located on the outer side in the vehicle width direction, and a bottom wall 1806 connecting the side walls 1802, 1804. There is.
In the present embodiment, outer wall 1804 extends on the same plane as standing portion 1004 and is continuous with standing portion 1004. Therefore, since the outer side surface 1204 of the side member 12 is joined to the upright portion 1004 and the side surface 1402 of the wheel house 14, the outer side wall 1804 is also joined to the outer side surface 1204 of the side member 12 and the wheel house 14. The outer surface 1204 of the side member 12 is located outside the outer wall 1804 and the upright portion 1004 in the vehicle width direction, and the side surface 1402 of the wheel house 14 is located outside the outer surface 1204, and they are joined together.

上向きビード部２０は、上方に突出する２つの側壁２００２、２００４を含んで構成されている。詳細には、上向きビード部２０は、車幅方向内側に位置する内側壁２００２と、車幅方向外側に位置する外側壁２００４と、それら側壁を接続する頂壁２００６とで構成されている。
外側壁２００４は、下向きビード部１８の内側壁１８０２と同一面上を延在し内側壁１８０２に連続している。 The upward bead portion 20 is configured to include two sidewalls 2002 and 2004 protruding upward. Specifically, the upward bead portion 20 includes an inner side wall 2002 located on the inner side in the vehicle width direction, an outer side wall 2004 located on the outer side in the vehicle width direction, and a top wall 2006 connecting the side walls.
The outer side wall 2004 extends on the same plane as the inner side wall 1802 of the downward bead portion 18 and is continuous with the inner side wall 1802.

本実施の形態によれば、荷重がサスペンション装置を介してホイールハウス１４に入力すると、入力した荷重はホイールハウス１４の側面１４０２とフロアパネル１０の起立部１００４との接合箇所に加わる。
一方、フロアパネル１０の起立部１００４はサイドメンバ１２の外側面１２０４に接合され、外側面１２０４と共にホイールハウス１４の側面１４０２に接合されており、外側面１２０４を含むサイドメンバ１２の剛性は、起立部１００４を含むフロアパネル１０の車幅方向の端部の剛性よりも高い。
したがって、ホイールハウス１４の側面１４０２に入力した荷重により、サイドメンバ１２の弾性変形に伴う外側面１２０４の変位に追従してフロアパネル１０が弾性変形しようとする。 According to the present embodiment, when a load is input to wheel house 14 via the suspension device, the input load is applied to the joint between side surface 1402 of wheel house 14 and standing portion 1004 of floor panel 10.
On the other hand, the upright portion 1004 of the floor panel 10 is joined to the outer side surface 1204 of the side member 12, and is joined to the side surface 1402 of the wheel house 14 together with the outer side surface 1204, and the rigidity of the side member 12 including the outer side surface 1204 is raised. The rigidity is higher than the rigidity of the end portion of the floor panel 10 including the portion 1004 in the vehicle width direction.
Therefore, the load applied to the side surface 1402 of the wheel house 14 tries to elastically deform the floor panel 10 following the displacement of the outer side surface 1204 accompanying the elastic deformation of the side member 12.

この際、フロアパネル１０とサイドメンバ１２とで形成された閉断面構造の面積は、下向きビード部１８により減少し、フロアパネルの車幅方向の端部の剛性は弱くなっており、また、サイドメンバ１２の内側面１２０２と外側面１２０４との間に位置する下向きビード部１８と上向きビード部２０がフロアパネル１０の変形時の伸び代として機能する。
すなわち、ホイールハウス１４に入力された荷重により、下向きビード部１８の底壁１８０６、内側壁１８０２、上向きビード部２０の内側壁２００２、頂壁２００６、外側壁２００４が弾性変形する。
それらビード部１８、２０の弾性変形により、フロアパネル１０の起立部１００４はサイドメンバ１２の外側面１２０４に追従して変位し、ホイールハウス１４の側面１４０２とフロアパネル１０の起立部１００４との接合箇所に加わるせん断力が軽減される。
したがって、ホイールハウス１４の板厚を厚くしたり、ホイールハウス１４とフロアパネル１０との接合箇所に別の補強部材を設けたりする必要がなく、車体の重量増加を抑制しつつコストダウンを図り、ホイールハウス１４とフロアパネル１０との接合箇所の耐久性の向上を図る上で有利となる。 At this time, the area of the closed cross-section structure formed by the floor panel 10 and the side member 12 is reduced by the downward bead portion 18, the rigidity of the end portion of the floor panel in the vehicle width direction is weakened, and the side portion is also reduced. The downward bead portion 18 and the upward bead portion 20 located between the inner side surface 1202 and the outer side surface 1204 of the member 12 function as an expansion margin when the floor panel 10 is deformed.
That is, the bottom wall 1806, the inner wall 1802 of the downward bead portion 18, the inner wall 2002, the top wall 2006, and the outer wall 2004 of the upward bead portion 20 are elastically deformed by the load input to the wheel house 14.
Due to the elastic deformation of the bead portions 18 and 20, the upright portion 1004 of the floor panel 10 is displaced following the outer surface 1204 of the side member 12, and the side surface 1402 of the wheel house 14 and the upright portion 1004 of the floor panel 10 are joined. The shearing force applied to the location is reduced.
Therefore, it is not necessary to increase the plate thickness of the wheel house 14 or to provide another reinforcing member at the joint between the wheel house 14 and the floor panel 10, and to reduce the cost while suppressing the weight increase of the vehicle body, This is advantageous in improving the durability of the joint between the wheel house 14 and the floor panel 10.

なお、本実施の形態では、下向きビード部１８と上向きビード部２０との双方を設けたが、向きビード部１６と上向きビード部２０との何れか一方のみを設けてもよい。
しかしながら、本実施の形態のように、下向きビード部１８と上向きビード部２０との双方を設けると、フロアパネル１０の変形時の伸び代を大きく確保でき、ホイールハウス１４とフロアパネル１０との接合箇所に加わる荷重を軽減する上でより有利となり、ホイールハウス１４とフロアパネル１０との接合箇所の耐久性の向上を図る上でより有利となる。 Although both the downward bead portion 18 and the upward bead portion 20 are provided in the present embodiment, only one of the downward bead portion 16 and the upward bead portion 20 may be provided.
However, if both the downward bead portion 18 and the upward bead portion 20 are provided as in the present embodiment, a large expansion margin can be secured when the floor panel 10 is deformed, and the wheel house 14 and the floor panel 10 can be joined together. This is more advantageous in reducing the load applied to the location, and is more advantageous in improving the durability of the joint portion between the wheel house 14 and the floor panel 10.

（第２の実施の形態）
次に図４を参照して第２の実施の形態について説明する。
なお、以下の実施の形態では、第１の実施の形態と同様な箇所、部材に同一の符号を付して説明する。
第２の実施の形態では、フロアパネル１０が車幅方向の中央に位置する中央パネル１０Ａと、中央パネル１０Ａの両側にそれぞれ位置する端部パネル１０Ｂとの３つのパネルで分割されている点が第１の実施の形態と異なっている。
そして、サイドメンバ１２の内側面１２０２の上端のフランジ１２０２Ａ上において、中央パネル１０Ａの車幅方向の外側の部分１０１０と、端部パネル１０Ｂの車幅方向内側の部分１０２０とが重ねられ、フランジ１２０２Ａに接合されている。
このような第２の実施の形態によっても第１の実施の形態と同様な作用効果が奏される。 (Second embodiment)
Next, a second embodiment will be described with reference to FIG.
In the following embodiments, the same parts and members as those in the first embodiment will be described with the same reference numerals.
In the second embodiment, the floor panel 10 is divided into three panels, a central panel 10A located at the center in the vehicle width direction and end panels 10B located on both sides of the central panel 10A. This is different from the first embodiment.
Then, on the flange 1202A at the upper end of the inner surface 1202 of the side member 12, the portion 1010 on the outer side in the vehicle width direction of the central panel 10A and the portion 1020 on the inner side in the vehicle width direction of the end panel 10B are overlapped, and the flange 1202A is formed. Is joined to.
According to the second embodiment as described above, the same operational effect as that of the first embodiment can be obtained.

（第３の実施の形態）
次に図５を参照して第３の実施の形態について説明する。
車幅方向両側のサイドメンバ２２の内側面２２０２の上端のフランジ２２０２Ａと外側面２２０４の上端のフランジ２２０４Ａとが共に床部１００２に接合されている。
そして、フロアパネル１０と各サイドメンバ２２とでそれぞれ閉断面構造が形成されている。
内側面２２０２のフランジ２２０２Ａが接合された箇所よりも車幅方向外側の床部１００２の箇所に、上方に凸の上向きビード部２４と、下方に凸の下向きビード部２６とが、それらの順に車幅方向外側に並べられ、それぞれ車両前後方向に延在形成されている。
それらビード部２４、２６は、ホイールハウス１４の側面１４０２がフロアパネル１０に接合される箇所において、接合される箇所の車両前後方向のほぼ全長にわたる長さで形成されている。
上向きビード部２４と下向きビード部２６との間は、上向きビード部２４よりも車幅方向内側に位置する床部１００２と同一面上を延在する接続板部２８となっている。
サイドメンバ２２の外側面２２０４の上端のフランジ２２０４Ａは、接続板部２８に接合されている。 (Third Embodiment)
Next, a third embodiment will be described with reference to FIG.
A flange 2202A at the upper end of the inner side surface 2202 of the side member 22 on both sides in the vehicle width direction and a flange 2204A at the upper end of the outer side surface 2204 are both joined to the floor portion 1002.
The floor panel 10 and each side member 22 form a closed cross-section structure.
An upward bead portion 24 having an upward convex shape and a downward bead portion 26 having a downward convex shape are provided at a place on the floor portion 1002 outside the vehicle width direction of the inner surface 2202 where the flange 2202A is joined, in that order. They are arranged on the outer side in the width direction and formed so as to extend in the vehicle front-rear direction.
The bead portions 24 and 26 are formed at a portion where the side surface 1402 of the wheel house 14 is joined to the floor panel 10 and have a length that extends over substantially the entire length of the joined portion in the vehicle front-rear direction.
Between the upward bead portion 24 and the downward bead portion 26, there is a connection plate portion 28 that extends on the same plane as the floor portion 1002 located inside the upward bead portion 24 in the vehicle width direction.
The flange 2204A at the upper end of the outer side surface 2204 of the side member 22 is joined to the connecting plate portion 28.

上向きビード部２４は、車幅方向内側に位置する内側壁２４０２と、車幅方向外側に位置する外側壁２４０４と、それら側壁を接続する頂壁２４０６とで構成されている。外側壁２４０４の下端は接続板部２８に接続されている。
下向きビード部２６は、車幅方向内側に位置する内側壁２６０２と、車幅方向外側に位置する外側壁２６０４と、それら側壁２６０２、２６０４を接続する底壁２６０６とで構成されている。内側壁２６０２の上端は接続板部２８に接続されている。
外側壁２６０４は、起立部１００４と同一面上を延在し起立部１００４に連続し、起立部１００４と共にホイールハウス１４の側面１４０２に接合されている。 The upward bead portion 24 includes an inner wall 2402 located on the inner side in the vehicle width direction, an outer wall 2404 located on the outer side in the vehicle width direction, and a top wall 2406 connecting the side walls. The lower end of the outer wall 2404 is connected to the connecting plate portion 28.
The downward bead portion 26 includes an inner side wall 2602 located on the inner side in the vehicle width direction, an outer side wall 2604 located on the outer side in the vehicle width direction, and a bottom wall 2606 connecting the side walls 2602 and 2604. The upper end of the inner wall 2602 is connected to the connecting plate portion 28.
The outer side wall 2604 extends on the same plane as the upright portion 1004, is continuous with the upright portion 1004, and is joined to the side surface 1402 of the wheel house 14 together with the upright portion 1004.

本実施の形態によれば、荷重がサスペンション装置を介してホイールハウス１４に入力すると、入力した荷重はホイールハウス１４の側面１４０２とフロアパネル１０の起立部１００４との接合箇所に加わる。一方、サイドメンバ２２の剛性は、サイドメンバ２２が設けられるフロアパネル１０の箇所の剛性よりも高い。したがって、ホイールハウス１４の側面１４０２に入力した荷重により、ホイールハウス１４の側面１４０２の変位に追従してサイドメンバ２２の車幅方向外側に位置するフロアパネル１０の部分が弾性変形しようとする。
この際、下向きビード部２６はフロアパネル１０の部分の変形時の伸び代として機能する。すなわち、下向きビード部２６の底壁２６０６、内側壁２６０２が弾性変形することで、フロアパネル１０の起立部１００４はサイドメンバ２２の外側面２２０４に追従して変位し、ホイールハウス１４の側面１４０２とフロアパネル１０の起立部１００４との接合箇所に加わるせん断力が軽減される。
したがって、ホイールハウス１４の板厚を厚くしたり、ホイールハウス１４とフロアパネル１０との接合箇所に別の補強部材を設けたりする必要がなく、車体の重量増加を抑制しつつコストダウンを図り、ホイールハウス１４とフロアパネル１０との接合箇所の耐久性の向上を図る上で有利となる。 According to the present embodiment, when a load is input to wheel house 14 via the suspension device, the input load is applied to the joint between side surface 1402 of wheel house 14 and standing portion 1004 of floor panel 10. On the other hand, the rigidity of the side member 22 is higher than the rigidity of the portion of the floor panel 10 where the side member 22 is provided. Therefore, the load applied to the side surface 1402 of the wheel house 14 follows the displacement of the side surface 1402 of the wheel house 14 to try to elastically deform the portion of the floor panel 10 located on the outer side in the vehicle width direction of the side member 22.
At this time, the downward bead portion 26 functions as an expansion margin when the floor panel 10 is deformed. That is, by elastically deforming the bottom wall 2606 and the inner wall 2602 of the downward bead portion 26, the upright portion 1004 of the floor panel 10 is displaced following the outer surface 2204 of the side member 22, and the side surface 1402 of the wheel house 14. The shearing force applied to the joint portion of the floor panel 10 with the standing portion 1004 is reduced.
Therefore, it is not necessary to increase the plate thickness of the wheel house 14 or to provide another reinforcing member at the joint between the wheel house 14 and the floor panel 10, and to reduce the cost while suppressing the weight increase of the vehicle body, This is advantageous in improving the durability of the joint between the wheel house 14 and the floor panel 10.

１０ フロアパネル
１００２ 床部
１００４ 起立部
１２ サイドメンバ
１２０２ 内側面
１２０４ 外側面
１４ ホイールハウス
１４０２ 側面
１６ ビード部
１８ 下向きビード部
１８０２ 内側壁
１８０４ 外側壁
１８０６ 底壁
２０ 上向きビード部
２００２ 内側壁
２００４ 外側壁
２００６ 頂壁
２２ サイドメンバ
２６ 下向きビード部
２６０２ 内側壁
２６０４ 外側壁
２６０６ 底壁 10 floor panel 1002 floor part 1004 standing part 12 side member 1202 inner side surface 1204 outer side surface 14 wheel house 1402 side surface 16 bead portion 18 downward bead portion 1802 inner side wall 1804 outer side wall 1806 bottom wall 20 upward bead portion 2002 inner side wall 2004 outer side wall 2006 Top wall 22 Side member 26 Downward bead portion 2602 Inner side wall 2604 Outer side wall 2606 Bottom wall

Claims (1)

車幅方向に延在する床部と、前記床部から起立しホイールハウスに接合される起立部とを有するフロアパネルと、
前記フロアパネルの下方で車幅方向両側にそれぞれ配置され、車幅方向の内側に位置する内側面と車幅方向の外側に位置する外側面とを有し上方が開放されたサイドメンバとを備え、
前記床部の車幅方向両側に前記各サイドメンバの内側面が接合され、前記フロアパネルの車幅方向両側に前記起立部と共にホイールハウスに前記各サイドメンバの外側面が接合され、前記フロアパネルと各サイドメンバとでそれぞれ閉断面構造を形成している車両のフロア構造であって、
前記内側面が接合された箇所よりも車幅方向外側の前記床部の箇所に、車幅方向に間隔をおいた箇所からそれぞれ前記床部の厚さ方向に前記床部よりも下方に突出する２つの側壁を含む下方に凸の下向きビード部と前記床部よりも上方に突出する２つの側壁を含む上方に凸の上向きビード部が前後方向に延在形成され、
前記上向きビード部は、前記下向きビード部の車幅方向内側に設けられる、
ことを特徴とする車両のフロア構造。 A floor panel having a floor portion extending in the vehicle width direction, and a standing portion standing upright from the floor portion and joined to a wheel house,
And a side member, which is disposed below the floor panel on both sides in the vehicle width direction and has an inner side surface located on the inner side in the vehicle width direction and an outer side surface located on the outer side in the vehicle width direction, and is open on the upper side. ,
Inner side surfaces of the side members are joined to both sides of the floor portion in the vehicle width direction, and outer surfaces of the side members are joined to the wheel house together with the upright portions on both sides of the floor panel in the vehicle width direction. And a floor structure of a vehicle in which each side member forms a closed cross-section structure,
At the location of the floor portion outside the vehicle width direction with respect to the location where the inner side surface is joined, the portions that are spaced apart in the vehicle width direction respectively project below the floor portion in the thickness direction of the floor portion. A downward convex bead portion including two side walls and an upward convex upward bead portion including two side walls protruding above the floor portion are formed to extend in the front-rear direction ,
The upward bead portion is provided inside the vehicle width direction of the downward bead portion,
A vehicle floor structure characterized in that
JP2016077771A 2016-04-08 2016-04-08 Vehicle floor structure Active JP6733272B2 (en)

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