JP2003011853A - Car body structure - Google Patents
Car body structureInfo
- Publication number
- JP2003011853A JP2003011853A JP2001201657A JP2001201657A JP2003011853A JP 2003011853 A JP2003011853 A JP 2003011853A JP 2001201657 A JP2001201657 A JP 2001201657A JP 2001201657 A JP2001201657 A JP 2001201657A JP 2003011853 A JP2003011853 A JP 2003011853A
- Authority
- JP
- Japan
- Prior art keywords
- floor
- propeller shaft
- vehicle body
- body structure
- shaft center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Motor Power Transmission Devices (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、車体中央に前後に
延びるフロアトンネルが配設されたフロアを備える車体
構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure including a floor in which a floor tunnel extending in the front-rear direction is provided in the center of the vehicle body.
【０００２】[0002]
【従来の技術】従来、後輪駆動車や四輪駆動車等の車体
構造では、プロペラシャフトを配設収納するためにフロ
アの車体中央に前後に延びるフロアトンネルが配設され
ている。図４にこのような車両の代表的な車体構造を示
す。車体両側に前後に延設されたサイドシル２８、２８
（右側は図示省略）間にフロア２１が渡設され、該フロ
ア２１の車体中央には前後方向にフロアトンネル２７が
延びている。該フロアトンネル２７の下部すなわち車外
側にはプロペラシャフト３３がプロペラシャフトセンタ
ベアリング３２によって支持される。フロアトンネル２
７の上壁および側壁にわたってそれぞれ固着された左右
の支持ブラケット２９、３０間に渡設された保持板３１
上に固定されたプロペラシャフトセンタベアリング３２
を介してプロペラシャフト３３が回転自在に軸支され
る。2. Description of the Related Art Conventionally, in a vehicle body structure such as a rear-wheel drive vehicle or a four-wheel drive vehicle, a floor tunnel extending in the front-rear direction is provided at the center of the vehicle body on the floor to accommodate and store a propeller shaft. FIG. 4 shows a typical body structure of such a vehicle. Side sills 28, 28 extending back and forth on both sides of the vehicle body
A floor 21 is provided between (the right side is not shown), and a floor tunnel 27 extends in the front-rear direction in the center of the vehicle body of the floor 21. A propeller shaft 33 is supported by a propeller shaft center bearing 32 below the floor tunnel 27, that is, outside the vehicle. Floor tunnel 2
7, a holding plate 31 provided between the left and right support brackets 29 and 30 fixedly attached to the upper wall and the side wall, respectively.
Propeller shaft center bearing 32 fixed on top
The propeller shaft 33 is rotatably supported via the shaft.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の車体構造にあっては、トランスミッションや
シート等の特定の部品の取付部位のみを強化すべくシー
トクロスメンバ２３をサイドシル２８の近傍にのみ配設
したり、プロペラシャフトセンタベアリング３２を支持
する左右の支持ブラケット２９、３０を取付けに必要な
最小限の剛性を保持させるに停まっていた。このため、
図５に示すように、プロペラシャフトセンタベアリング
３２の振動がフロア２１に伝達し易く、車内騒音性能を
悪化させる問題を抱えていて、フロア厚さを大きくする
か、サイレンサとして比較的大きな質量を貼設したり、
ダイナミックダンパを付設する等の対策が講じられてい
た。ところが、このようなサイレンサやダイナミックダ
ンパ等の重量物を設置することで、車体重量が増加する
傾向を生じた。However, in such a conventional vehicle body structure, the seat cross member 23 is provided only in the vicinity of the side sill 28 in order to strengthen only the mounting portion of a specific component such as a transmission or a seat. The left and right support brackets 29 and 30 for arranging and supporting the propeller shaft center bearing 32 are kept to have the minimum rigidity necessary for mounting. For this reason,
As shown in FIG. 5, the vibration of the propeller shaft center bearing 32 is easily transmitted to the floor 21, which causes a problem of deteriorating the noise performance in the vehicle. Therefore, increase the floor thickness or attach a relatively large mass as a silencer. Or set
Measures were taken such as installing a dynamic damper. However, the installation of such a heavy object such as a silencer or a dynamic damper tends to increase the weight of the vehicle body.
【０００４】そこで、本発明では、これら従来の車体構
造をさらに改良して、フロア全体の剛性を向上させると
ともに、プロペラシャフトセンタベアリング支持部周辺
のフロアの剛性も充分に確保でき、低騒音で軽量化を可
能にする車体構造を提供することを目的とする。Therefore, in the present invention, these conventional vehicle body structures are further improved to improve the rigidity of the entire floor, and the rigidity of the floor around the propeller shaft center bearing support portion can be sufficiently ensured, resulting in low noise and light weight. It is an object of the present invention to provide a vehicle body structure that can be realized.
【０００５】[0005]
【課題を解決するための手段】このため本発明は、車体
幅方向中央に前後に延びるフロアトンネルが配設された
フロアを備える車体構造において、前記フロアトンネル
の両側で左右対称位置に前後に延び所定断面を有する少
なくとも一対の縦の骨格部材と、前記フロアの両側端部
を前記フロアトンネルを跨いで連結し、前後方向に所定
間隔に配設される複数の横の骨格部材とを格子状に前記
フロアに接合し、前記横の骨格部材の少なくとも前記フ
ロアトンネルに対応する部位は前記フロアの下面に接合
されていることを特徴とする。また本発明は、前記縦横
の骨格部材により分割される格子状の各々のフロア面を
曲面形状としたことを特徴とする。また本発明は、前記
複数の横の骨格部材は、各々前後方向に均等な所定間隔
で配設されていることを特徴とする。また本発明は、前
記複数の横の骨格部材のうち少なくとも１つは、前記フ
ロアトンネルに対し前記フロアの下面に接合する室内側
クロスメンバと、前記フロアの両側端部から各々前記フ
ロアトンネル側に延び、前記フロアの上面に接合される
室内側クロスメンバとで構成され、前記室外側クロスメ
ンバと前記各々の室内側クロスメンバとは端部同士を重
合ラップさせたことを特徴とする。また本発明は、車体
幅方向中央に前後に延び、車外側にプロペラシャフトを
回転自在に軸支するプロペラシャフトセンタベアリング
が支持されるフロアトンネルが配設されたフロアを備え
る車体構造において、少なくとも前記フロアトンネルを
跨ぐ幅方向の横の骨格部材を前記フロアに接合し、前記
プロペラシャフトセンタベアリングの支持部を前記横の
骨格部材に近接させたことを特徴とする。また本発明
は、前記プロペラシャフトセンタベアリングの支持部を
前記横の骨格部材の直前方に近接し、前記プロペラシャ
フトセンタベアリングが後退時、前記横の骨格部材の下
方をくぐれるようにプロペラシャフトまたは横の骨格部
材を形成することを特徴とするもので、フロア全体の剛
性を向上させるとともに、プロペラシャフトセンタベア
リング支持部周辺の剛性も充分に確保でき、低騒音で軽
量化をを可能にする車体構造が得られる。For this reason, the present invention provides a vehicle body structure including a floor in which a floor tunnel extending in the front-rear direction is provided in the center of the vehicle body in the width direction. At least a pair of vertical skeleton members having a predetermined cross section and a plurality of horizontal skeleton members arranged at predetermined intervals in the front-rear direction by connecting both end portions of the floor across the floor tunnel in a lattice shape. It is characterized in that it is joined to the floor, and at least a portion of the lateral skeletal member corresponding to the floor tunnel is joined to the lower surface of the floor. Further, the present invention is characterized in that each of the lattice-shaped floor surfaces divided by the vertical and horizontal frame members has a curved surface shape. Further, the present invention is characterized in that the plurality of horizontal skeletal members are arranged at equal intervals in the front-rear direction. In the present invention, at least one of the plurality of horizontal skeletal members is an indoor side cross member that is joined to a lower surface of the floor with respect to the floor tunnel, and both side end portions of the floor are connected to the floor tunnel side. The indoor side cross member extends and is joined to the upper surface of the floor, and the outdoor side cross member and each of the indoor side cross members are overlapped at their ends. Further, the present invention relates to at least a vehicle body structure including a floor, which extends forward and backward in the center of the vehicle width direction and has a floor tunnel in which a propeller shaft center bearing for rotatably supporting a propeller shaft is supported on the outside of the vehicle. A lateral skeleton member in the width direction straddling the floor tunnel is joined to the floor, and a support portion of the propeller shaft center bearing is brought close to the lateral skeleton member. Further, the present invention provides a support portion of the propeller shaft center bearing close to a position immediately in front of the lateral skeletal member, and when the propeller shaft center bearing retracts, passes under the lateral skeletal member. The structure of the vehicle body is characterized by forming a skeleton member of the vehicle body, which not only improves the rigidity of the entire floor, but also secures sufficient rigidity around the propeller shaft center bearing support portion, enabling low noise and weight reduction. Is obtained.
【０００６】[0006]
【実施の形態】以下、図面を参照して本発明の実施の形
態を詳細に説明する。図１〜図３は本発明の車体構造の
１実施の形態を示し、図１（Ａ）はフロア部のみの斜視
図、図１（Ｂ）は図１（Ａ）におけるＡ−Ａの一部断面
図、図２は図１（Ａ）におけるＡ−Ａ断面相当のプロペ
ラシャフトセンタベアリングを含めた図、図３は図２の
斜視図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 3 show an embodiment of a vehicle body structure of the present invention, FIG. 1 (A) is a perspective view of only a floor portion, and FIG. 1 (B) is a part of AA in FIG. 1 (A). FIG. 2 is a cross-sectional view, FIG. 2 is a view including a propeller shaft center bearing corresponding to the AA cross section in FIG. 1A, and FIG. 3 is a perspective view of FIG.
【０００７】以下に詳述すると、図１（Ａ）は左上方を
車両前方とし、フロア１の車体中央に前後に延びるフロ
アトンネル７の両側の左右対称位置の下面に、該フロア
トンネル７と略平行に縦の骨格部材を構成する左右一対
の室外側サイドメンバ５、６が配設される。また、車体
の前後方向に均等な所定の間隔を置いて、横の骨格部材
を構成する幅方向のクロスメンバ４Ａ、２Ｂ・４Ｂ・３
Ｂおよび２Ｃ・４Ｃ・３Ｃが配設される。これら横の骨
格部材を構成する幅方向のクロスメンバは、図２に示さ
れるように、フロアトンネル７を跨いでフロア１の両側
端部に前後に延設されたサイドシル８、８（右側は図示
省略）部まで延設される。これらの縦横の骨格部材はフ
ロア１全体に対して略均等で格子状に接合・配設されて
いることによって、フロア１の全体の剛性が確保され、
前方あるいは側方からの衝撃荷重をフロア１全体に分散
でき、比較的薄板でキャビンの変形を抑制でき、さらに
プロペラシャフトセンタベアリング１２による振動を抑
制することが可能となる。More specifically, in FIG. 1 (A), the upper left side is the front of the vehicle, and the floor tunnel 7 is formed on the lower surface at the left and right symmetrical positions on both sides of the floor tunnel 7 extending forward and backward in the center of the vehicle body of the floor 1. A pair of left and right outdoor side members 5 and 6 forming a vertical skeleton member are arranged in parallel. In addition, cross members 4A, 2B, 4B, 3 in the width direction that form a horizontal skeleton member at equal intervals in the front-rear direction of the vehicle body.
B and 2C, 4C, and 3C are arranged. As shown in FIG. 2, the cross members constituting the lateral skeleton members in the width direction are provided with side sills 8 and 8 (right side shown in the figure on the right and left sides) extending forward and backward on both side end portions of the floor 1 across the floor tunnel 7. (Omitted) is extended to the section. These vertical and horizontal skeleton members are joined and arranged in a lattice shape substantially evenly with respect to the entire floor 1, so that the rigidity of the entire floor 1 is secured,
The impact load from the front or the side can be dispersed over the entire floor 1, the deformation of the cabin can be suppressed with a relatively thin plate, and the vibration due to the propeller shaft center bearing 12 can be suppressed.
【０００８】また、前方のクロスメンバ４Ａが全長にわ
たりフロア１の下面（室外側）に接合・配設され、中間
のクロスメンバがフロア１の上面に配設された左右の室
内側クロスメンバ２Ｂ、３Ｂとフロアトンネル７内に配
設された室外側クロスメンバ４Ｂとから構成される。そ
して、後方のクロスメンバがフロア１の上面に配設され
た左右の室内側クロスメンバ２Ｃ、３Ｃとフロアトンネ
ル７内に配設された室外側クロスメンバ４Ｃとから構成
される。すなわち、横の骨格部材のフロアトンネル７に
対応する部位であるクロスメンバ４Ａ、室外側クロスメ
ンバ４Ｂおよび４Ｃはフロア１の下面に接合され、車両
用シートが取り付けられる室外側クロスメンバ２Ｂ、３
Ｂおよび２Ｃ、３Ｃはフロア１の上面に接合される。し
たがって、フロア１の全体の剛性および振動抑制が確保
されつつ、室内空間を確保することが可能となる。さら
に、室外側クロスメンバ４Ｂ、４Ｃとがフロア１の下面
に接合されることで、クロスメンバ２Ｂ、４Ｂ、３Ｂお
よび２Ｃ、４Ｃ、３Ｃがフロア１のサイドシル８、８間
を略直線的に配置されるため、フロア１全体の剛性がさ
らに向上する。Further, the front cross member 4A is joined and disposed on the lower surface (outdoor side) of the floor 1 over the entire length thereof, and the middle cross member is disposed on the upper surface of the floor 1 on the left and right indoor side cross members 2B, 3B and the outdoor cross member 4B arranged in the floor tunnel 7. The rear cross member is composed of the left and right indoor side cross members 2C and 3C provided on the upper surface of the floor 1 and the outdoor side cross member 4C provided in the floor tunnel 7. That is, the cross member 4A and the outdoor cross members 4B and 4C, which are parts of the horizontal skeleton member corresponding to the floor tunnel 7, are joined to the lower surface of the floor 1 and the outdoor cross members 2B, 3 to which the vehicle seat is attached.
B and 2C and 3C are joined to the upper surface of the floor 1. Therefore, it is possible to secure the indoor space while securing the rigidity and vibration suppression of the entire floor 1. Further, by joining the outdoor side cross members 4B, 4C to the lower surface of the floor 1, the cross members 2B, 4B, 3B and 2C, 4C, 3C are arranged substantially linearly between the side sills 8, 8 of the floor 1. Therefore, the rigidity of the entire floor 1 is further improved.
【０００９】さらに好適には、フロア１の各格子面、例
えばサイドメンバ５、クロスメンバ２Ｂ、２Ｃ、フロア
トンネル７で囲まれるフロア面は曲面に形成され、フロ
ア１自体の剛性がさらに向上することにより、振動、騒
音対策のためのサイレンサ等が不要になり、車体の軽量
化を図ることができる。また、室内側クロスメンバ２
Ｂ、３Ｂのフロアトンネル側端部と室外側クロスメンバ
４Ｂおよび４Ｃとの端部同士をフロア１を介在させて適
宜長さＬだけ重合ラップさせ、車室内外の骨格の切れ目
を補剛している。ここで、図２および図３に示すよう
に、プロペラシャフトセンタベアリング１２は、フロア
トンネル７の室外側である下面の左右に、フロアトンネ
ル７の上壁および側壁にわたってそれぞれ固着された左
右の支持ブラケット９、１０間に渡設された保持板１１
上に固定されて、プロペラシャフトを回転自在に軸支す
る。More preferably, each lattice surface of the floor 1, for example, the floor surface surrounded by the side members 5, the cross members 2B, 2C and the floor tunnel 7 is formed into a curved surface, so that the rigidity of the floor 1 itself is further improved. This eliminates the need for a silencer or the like for countermeasures against vibrations and noises, and makes it possible to reduce the weight of the vehicle body. In addition, the indoor cross member 2
The ends of the floor tunnels B and 3B on the side of the floor tunnel and the outdoor side cross members 4B and 4C are overlapped with each other by a length L with the floor 1 interposed, and the skeleton cuts inside and outside the vehicle are stiffened. There is. Here, as shown in FIGS. 2 and 3, the propeller shaft center bearings 12 are provided on the left and right sides of the lower surface, which is the outdoor side of the floor tunnel 7, and on the left and right support brackets fixed to the upper wall and the side wall of the floor tunnel 7, respectively. Holding plate 11 provided between 9 and 10
It is fixed on the top and rotatably supports the propeller shaft.
【００１０】ここで、プロペラシャフトセンタベアリン
グ１２（ベアリング１２は図示省略されて左右の支持ブ
ラケット９、１０のみが示されている）を、クロスメン
バ４Ｂの直前または直後（図示の例は直前）に配設して
いる。すなわち、プロペラシャフトによるプロペラシャ
フトセンタベアリング１２の振動を受け易い支持部周辺
のフロアは近接するクロスメンバ４Ｂで補剛され、また
中間のクロスメンバ２Ｂ、４Ｂ、３Ｂはサイドシル８、
８まで延設されていることからフロアの振動を抑制する
ことができる。さらに、プロペラシャフトセンタベアリ
ング１２をクロスメンバ４Ｂの直前に配設した場合にお
いて、プロペラシャフトセンタベアリング１２が、図２
で明確なように、クロスメンバ４Ｂ内をくぐれるように
プロペラシャフトセンタベアリング１２またはクロスメ
ンバ４Ｂが形成される。このような構成により、プロペ
ラシャフトセンタベアリング１２の支持ブラケット９、
１０をクロスメンバ４Ｂに直接配設する場合に対してク
ロスメンバ４Ｂの所定の断面を減少させることがない。
そして、万一の前面衝突に遭遇しても、プロペラシャフ
トセンタベアリング１２がクロスメンバ４Ｂに衝接せず
に後方へ潜り抜けることができ、エンジンの後退が妨げ
られることによる乗員席への悪影響を未然に防ぐことが
できるとともに、プロペラシャフトセンタベアリング１
２をクロスメンバ４Ｂの直前または直後のどちらにも配
設することが可能となり、設計の自由度が向上する。Here, the propeller shaft center bearing 12 (the bearing 12 is not shown and only the left and right support brackets 9 and 10 are shown) is provided immediately before or after the cross member 4B (just before the illustrated example). It is arranged. That is, the floor around the support portion, which is apt to be vibrated by the propeller shaft center bearing 12 by the propeller shaft, is stiffened by the adjacent cross member 4B, and the intermediate cross members 2B, 4B, 3B are the side sills 8,
Since it is extended up to 8, vibration of the floor can be suppressed. Further, when the propeller shaft center bearing 12 is arranged immediately before the cross member 4B, the propeller shaft center bearing 12 is
As is clear from the above, the propeller shaft center bearing 12 or the cross member 4B is formed so as to pass through the inside of the cross member 4B. With such a configuration, the support bracket 9 of the propeller shaft center bearing 12
The predetermined cross section of the cross member 4B is not reduced as compared with the case where 10 is directly arranged on the cross member 4B.
Even if a frontal collision should occur, the propeller shaft center bearing 12 can pass backward without colliding with the cross member 4B, which may adversely affect the occupant's seat by preventing the engine from retracting. This can be prevented and the propeller shaft center bearing 1
2 can be arranged immediately before or after the cross member 4B, and the degree of freedom in design is improved.
【００１１】以上、本発明の各実施の形態について説明
してきたが、本発明の趣旨の範囲内で、フロア面の各格
子面における曲面形状（曲率）、骨格部材である縦横の
クロスメンバの断面の大きさおよびその断面形状、フロ
アおよびサイドシルへの配設形態（溶接等の固着接合、
ボルト固定等によるフロアへの接合形態の他、必要に応
じて室内側および室外側のクロスメンバの組合せ形態：
例えば図示の例の他、前方のクロスメンバを中間のクロ
スメンバと同様の振分け配設形態としてもよい。また、
左右のサイドメンバを室外側としてもよい。）、フロア
トンネルの形状、プロペラシャフトセンタベアリングの
形状、形式およびその支持ブラケットを介した設置形
態、支持ブラケットの形状、形式等については適宜選定
できるものである。Although the respective embodiments of the present invention have been described above, within the scope of the gist of the present invention, the curved surface shape (curvature) in each lattice surface of the floor surface, and the cross-section of the vertical and horizontal cross members which are the skeleton members. Size and its cross-sectional shape, arrangement on floor and side sill (fixed joining such as welding,
In addition to connecting to the floor by fixing bolts, etc., if necessary, combining the indoor and outdoor cross members:
For example, in addition to the illustrated example, the front cross member may be arranged in the same manner as the middle cross member. Also,
The left and right side members may be outdoors. ), The shape of the floor tunnel, the shape and form of the propeller shaft center bearing, the form of installation of the propeller shaft center bearing through the support bracket, the shape and form of the support bracket, etc. can be appropriately selected.
【００１２】[0012]
【発明の効果】以上、詳細に述べてきたように、本発明
によれば、車体幅方向中央に前後に延びるフロアトンネ
ルが配設されたフロアを備える車体構造において、前記
フロアトンネルの両側で左右対称位置に前後に延び所定
断面を有する少なくとも一対の縦の骨格部材と、前記フ
ロアの両側端部を前記フロアトンネルを跨いで連結し、
前後方向に所定間隔に配設される複数の横の骨格部材と
を格子状に前記フロアに接合し、前記横の骨格部材の少
なくとも前記フロアトンネルに対応する部位は前記フロ
アの下面に接合されていることにより、室内空間を確保
しつつ、フロア全体の剛性が確保され、前方あるいは側
方からの衝撃荷重をフロア全体に分散でき、比較的薄板
でキャビンの変形を抑えることができるばかりでなく、
プロペラシャフトセンタベアリングからの起振力により
フロアの共振する騒音の発生を低減させることができ
る。As described above in detail, according to the present invention, in a vehicle body structure including a floor in which a floor tunnel extending in the front-rear direction is provided in the center in the vehicle width direction, the left and right sides of the floor tunnel are provided. At least a pair of vertical skeleton members having a predetermined cross-section extending forward and backward at symmetrical positions, and connecting both side end portions of the floor across the floor tunnel,
A plurality of horizontal skeletal members arranged at predetermined intervals in the front-rear direction are joined to the floor in a grid pattern, and at least a portion of the horizontal skeletal members corresponding to the floor tunnel is joined to a lower surface of the floor. By securing the indoor space, the rigidity of the entire floor is secured, the impact load from the front or side can be dispersed over the entire floor, and not only the deformation of the cabin can be suppressed with a relatively thin plate,
Generation of noise that resonates on the floor can be reduced by the vibration force from the propeller shaft center bearing.
【００１３】また、前記縦横の骨格部材により分割され
る格子状の各々のフロア面を曲面形状とした場合は、フ
ロア自体の剛性がさらに向上することにより、振動、騒
音対策のためのサイレンサ等が不要になり、車体の軽量
化を図ることができる。さらに、前記複数の横の骨格部
材は、各々前後方向に均等な所定間隔で配設されている
ことにより、衝撃荷重を横の骨格部材および曲面形状の
フロア面に均一に伝達することができ、フロア全体の剛
性がさらに向上する。さらにまた、前記複数の横の骨格
部材のうち少なくとも１つは、前記フロアトンネルに対
し前記フロアの下面に接合する室内側クロスメンバと、
前記フロアの両側端部から各々前記フロアトンネル側に
延び、前記フロアの上面に接合される室内側クロスメン
バとで構成され、前記室外側クロスメンバと前記各々の
室内側クロスメンバとは端部同士を重合ラップさせたこ
とにより、車室内外の骨格の切れ目が有効に補剛され
る。When each of the lattice-shaped floor surfaces divided by the vertical and horizontal skeleton members has a curved surface shape, the rigidity of the floor itself is further improved, and a silencer or the like for vibration and noise countermeasures is provided. It becomes unnecessary and the weight of the vehicle body can be reduced. Furthermore, since the plurality of horizontal skeletal members are arranged at equal intervals in the front-rear direction, the impact load can be evenly transmitted to the horizontal skeletal members and the curved floor surface. The rigidity of the entire floor is further improved. Furthermore, at least one of the plurality of horizontal skeletal members is an indoor cross member that is joined to the bottom surface of the floor with respect to the floor tunnel,
An indoor side cross member that extends from both side end portions of the floor to the floor tunnel side and is joined to an upper surface of the floor, and the outdoor side cross member and each of the indoor side cross members end together. Due to the overlapping lap, the skeleton cuts inside and outside the vehicle are effectively stiffened.
【００１４】また、車体幅方向中央に前後に延び、車外
側にプロペラシャフトを回転自在に軸支するプロペラシ
ャフトセンタベアリングが支持されるフロアトンネルが
配設されたフロアを備える車体構造において、少なくと
も前記フロアトンネルを跨ぐ幅方向の横の骨格部材を前
記フロアに接合し、前記プロペラシャフトセンタベアリ
ングの支持部を前記横の骨格部材に近接させたことによ
り、プロペラシャフトによるプロペラシャフトセンタベ
アリングの振動を受け易い支持部周辺のフロアは近接す
る横の骨格部材で補剛され、フロアの共振する騒音の発
生を低減させることができる。さらに、前記プロペラシ
ャフトセンタベアリングの支持部を前記横の骨格部材の
直前方に近接し、前記プロペラシャフトセンタベアリン
グが後退時、前記横の骨格部材の下方をくぐれるように
プロペラシャフトまたは横の骨格部材を形成することに
より、プロペラシャフトセンタベアリングの支持部を横
の骨格部材に直接配設する場合に対して、横の骨格部材
の断面を減少させることなく、前面衝突時のプロペラシ
ャフトセンタベアリングの後退を妨げるとによる乗員席
への悪影響を未然に防ぐことができる。Further, in a vehicle body structure having a floor provided with a floor tunnel extending forward and backward in the widthwise center of the vehicle body and supporting a propeller shaft center bearing for rotatably supporting a propeller shaft, the floor structure is provided at least as described above. A transverse skeletal member in the width direction straddling the floor tunnel is joined to the floor, and the support portion of the propeller shaft center bearing is brought close to the lateral skeletal member, so that the propeller shaft receives the vibration of the propeller shaft center bearing. The floor around the easily supported portion is stiffened by the adjacent horizontal skeletal member, and the generation of noise that resonates on the floor can be reduced. Further, a support portion of the propeller shaft center bearing is located immediately in front of the lateral skeletal member, and when the propeller shaft center bearing is retracted, the propeller shaft or the lateral skeletal member is passed under the lateral skeletal member. As compared with the case where the support portion of the propeller shaft center bearing is directly disposed on the horizontal skeletal member, the rearward movement of the propeller shaft center bearing during a frontal collision can be achieved without reducing the cross section of the horizontal skeletal member. It is possible to prevent the passenger seat from being adversely affected by hindering the vehicle.
【図１】本発明の車体構造の１実施の形態を示し、図１
（Ａ）はフロア部のみの斜視図、図１（Ｂ）は図１
（Ａ）におけるＡ−Ａの一部断面図である。1 shows an embodiment of a vehicle body structure of the present invention, and FIG.
1A is a perspective view of only the floor portion, and FIG. 1B is FIG.
It is a partial cross section of AA in (A).
【図２】同、図１（Ａ）におけるＡ−Ａ断面相当のプロ
ペラシャフトセンタベアリングを含めた図である。FIG. 2 is a view including a propeller shaft center bearing corresponding to a cross section taken along the line AA in FIG. 1 (A).
【図３】同、図２の斜視図である。3 is a perspective view of FIG. 2.
【図４】従来の代表的な車体構造を示す。FIG. 4 shows a typical conventional vehicle body structure.
【図５】プロペラシャフトセンタベアリングの振動がフ
ロアに伝達する様子を示す図１（Ａ）のＡ−Ａ断面に相
当する図である。FIG. 5 is a view corresponding to a cross section taken along the line AA of FIG. 1 (A) showing how vibration of a propeller shaft center bearing is transmitted to a floor.
１ フロア ２ 左室内側クロスメンバ（横骨格部材） ３ 右室内側クロスメンバ（横骨格部材） ４ 室外側クロスメンバ（横骨格部材） ５ 左室外側サイドメンバ（縦骨格部材） ６ 右室外側サイドメンバ（縦骨格部材） ７ フロアトンネル ８ サイドシル部 ９ 左支持ブラケット １０ 右支持ブラケット １１ 保持板 １２ プロペラシャフトセンタベアリング 1 floor 2 Left interior cross member (transverse frame member) 3 Right indoor cross member (transverse frame member) 4 Outdoor side cross member (transverse skeleton member) 5 Left chamber outer side member (vertical skeleton member) 6 Side member outside right chamber (vertical frame member) 7 floor tunnel 8 Side sill part 9 Left support bracket 10 Right support bracket 11 holding plate 12 Propeller shaft center bearing
Claims (6)
ンネルが配設されたフロアを備える車体構造において、
前記フロアトンネルの両側で左右対称位置に前後に延び
所定断面を有する少なくとも一対の縦の骨格部材と、前
記フロアの両側端部を前記フロアトンネルを跨いで連結
し、前後方向に所定間隔に配設される複数の横の骨格部
材とを格子状に前記フロアに接合し、前記横の骨格部材
の少なくとも前記フロアトンネルに対応する部位は前記
フロアの下面に接合されていることを特徴とする車体構
造。1. A vehicle body structure including a floor in which a floor tunnel extending in the front-rear direction is provided in the center of the vehicle body in the width direction,
At least a pair of vertical skeleton members that extend forward and backward at symmetrical positions on both sides of the floor tunnel and have a predetermined cross section, and both end portions of the floor are connected across the floor tunnel, and are arranged at predetermined intervals in the front-rear direction. A plurality of lateral skeletal members to be joined to the floor in a grid pattern, and at least a portion of the lateral skeletal member corresponding to the floor tunnel is joined to a lower surface of the floor. .
子状の各々のフロア面を曲面形状としたことを特徴とす
る請求項１に記載の車体構造。2. The vehicle body structure according to claim 1, wherein each of the lattice-shaped floor surfaces divided by the vertical and horizontal frame members has a curved shape.
向に均等な所定間隔で配設されていることを特徴とする
請求項１または２に記載の車体構造。3. The vehicle body structure according to claim 1, wherein the plurality of horizontal skeletal members are arranged at equal intervals in the front-rear direction.
も１つは、前記フロアトンネルに対し前記フロアの下面
に接合する室内側クロスメンバと、前記フロアの両側端
部から各々前記フロアトンネル側に延び、前記フロアの
上面に接合される室内側クロスメンバとで構成され、前
記室外側クロスメンバと前記各々の室内側クロスメンバ
とは端部同士を重合ラップさせたことを特徴とする請求
項１ないし３のいずれかに記載の車体構造。4. At least one of the plurality of horizontal skeletal members is an indoor cross member that is joined to a lower surface of the floor with respect to the floor tunnel, and both side end portions of the floor are located on the floor tunnel side. 2. An indoor side cross member that extends and is joined to the upper surface of the floor, wherein the outdoor side cross member and each of the indoor side cross members are overlapped at their ends. The vehicle body structure according to any one of 1 to 3.
プロペラシャフトを回転自在に軸支するプロペラシャフ
トセンタベアリングが支持されるフロアトンネルが配設
されたフロアを備える車体構造において、少なくとも前
記フロアトンネルを跨ぐ幅方向の横の骨格部材を前記フ
ロアに接合し、前記プロペラシャフトセンタベアリング
の支持部を前記横の骨格部材に近接させたことを特徴と
する車体構造。5. A vehicle body structure including a floor, which extends forward and backward in the center of the vehicle body width direction, and has a floor tunnel, on which a propeller shaft center bearing that rotatably supports a propeller shaft is supported, is provided on the outside of the vehicle. A vehicle body structure characterized in that a lateral skeleton member in the width direction straddling a floor tunnel is joined to the floor, and a support portion of the propeller shaft center bearing is brought close to the lateral skeleton member.
の支持部を前記横の骨格部材の直前方に近接し、前記プ
ロペラシャフトセンタベアリングが後退時、前記横の骨
格部材の下方をくぐれるようにプロペラシャフトまたは
横の骨格部材を形成することを特徴とする請求項５に記
載の車体構造。6. A propeller shaft or a horizontal propeller shaft center bearing is arranged so that a supporting portion of the propeller shaft center bearing is close to immediately in front of the lateral skeletal member, and the propeller shaft center bearing passes under the lateral skeletal member when the propeller shaft center bearing retracts. The vehicle body structure according to claim 5, wherein the skeleton member is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001201657A JP2003011853A (en) | 2001-07-03 | 2001-07-03 | Car body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001201657A JP2003011853A (en) | 2001-07-03 | 2001-07-03 | Car body structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003011853A true JP2003011853A (en) | 2003-01-15 |
Family
ID=19038578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001201657A Withdrawn JP2003011853A (en) | 2001-07-03 | 2001-07-03 | Car body structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003011853A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006096184A (en) * | 2004-09-29 | 2006-04-13 | Mazda Motor Corp | Vehicle body lower structure |
| JP2007015630A (en) * | 2005-07-11 | 2007-01-25 | Fuji Heavy Ind Ltd | Transmission support structure |
| KR100792911B1 (en) * | 2006-12-08 | 2008-01-08 | 현대자동차주식회사 | Floor panel reinforcing structure in vehicle |
| KR101499999B1 (en) * | 2009-09-23 | 2015-03-18 | 현대자동차주식회사 | Structure for reinforcing tunnel part of vehicle |
-
2001
- 2001-07-03 JP JP2001201657A patent/JP2003011853A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006096184A (en) * | 2004-09-29 | 2006-04-13 | Mazda Motor Corp | Vehicle body lower structure |
| JP2007015630A (en) * | 2005-07-11 | 2007-01-25 | Fuji Heavy Ind Ltd | Transmission support structure |
| JP4555179B2 (en) * | 2005-07-11 | 2010-09-29 | 富士重工業株式会社 | Transmission support structure |
| KR100792911B1 (en) * | 2006-12-08 | 2008-01-08 | 현대자동차주식회사 | Floor panel reinforcing structure in vehicle |
| KR101499999B1 (en) * | 2009-09-23 | 2015-03-18 | 현대자동차주식회사 | Structure for reinforcing tunnel part of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20081007 |