JP2567290Y2 - Car floor reinforcement structure - Google Patents
Car floor reinforcement structureInfo
- Publication number
- JP2567290Y2 JP2567290Y2 JP1991111322U JP11132291U JP2567290Y2 JP 2567290 Y2 JP2567290 Y2 JP 2567290Y2 JP 1991111322 U JP1991111322 U JP 1991111322U JP 11132291 U JP11132291 U JP 11132291U JP 2567290 Y2 JP2567290 Y2 JP 2567290Y2
- Authority
- JP
- Japan
- Prior art keywords
- cross member
- floor
- fixed
- floor tunnel
- tunnel portion
- 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.)
- Expired - Lifetime
Links
Landscapes
- Body Structure For Vehicles (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は自動車フロアの補強構造
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure for an automobile floor.
【０００２】[0002]
【従来の技術】自動車のフロアは一般に図４に示すよう
に、フロントフロア１と該フロントフロア１より高い位
置となっているリヤフロア２とからなり、フロントフロ
ア１には第１クロスメンバ３が固設され、この第１クロ
スメンバ３にはフロントシートの前側を取付けるように
なっており（例えば実開昭６１−１８６６８６号公報参
照）、フロントフロア１後端部からリヤフロア前端部に
至る立ち上り面に第２クロスメンバ４を構成しているの
が普通である。上記第１クロスメンバ３は、フロントフ
ロア１上面に接合固着し外側端をサイドシル６に結合し
内側端をフロントフロア１のフロアトンネル部１１側面
に結合した左右のクロスメンバ３１，３１と、フロアト
ンネル部１１の裏側に接合固着され両側端部をフロアト
ンネル部側面を介して左右のクロスメンバ３１，３１の
内側端に結合したフロアトンネル部補強用のクロスメン
バ３２とから構成され、該第１クロスメンバ３と左右の
サイドシル６，６間にまたがり中央部がフロアトンネル
部１１に結合された第２クロスメンバ４とにより、一方
のサイドシル６に入力した車幅方向の荷重をフロアトン
ネル部１１へと伝え該荷重を吸収低減するようになって
いる。2. Description of the Related Art As shown in FIG. 4, an automobile floor generally comprises a front floor 1 and a rear floor 2 located at a position higher than the front floor 1, and a first cross member 3 is fixed to the front floor 1. The front side of the front seat is attached to the first cross member 3 (see, for example, Japanese Utility Model Laid-Open Publication No. Sho 61-186686). The first cross member 3 has a rising surface extending from the rear end of the front floor 1 to the front end of the rear floor. Usually, the second cross member 4 is formed. The first cross member 3 includes left and right cross members 31, 31 joined and fixed to the upper surface of the front floor 1, having an outer end connected to the side sill 6 and an inner end connected to the side surface of the floor tunnel portion 11 of the front floor 1. A cross member 32 for reinforcing the floor tunnel portion, which is joined and fixed to the back side of the portion 11 and whose both end portions are connected to the inner ends of the left and right cross members 31, 31 via the side surfaces of the floor tunnel portion. By the second cross member 4 having a central portion extending between the member 3 and the left and right side sills 6 and 6 connected to the floor tunnel portion 11, the load in the vehicle width direction input to one of the side sills 6 is applied to the floor tunnel portion 11. The load is absorbed and reduced.
【０００３】又上記既存の第１及び第２のクロスメンバ
３及び４では吸収しきれないような側面衝突等の車幅方
向大荷重をも吸収できるようにするために、図４の鎖線
で示すように、上記第１と第２のクロスメンバ３と４の
ほぼ中間位置に、第３クロスメンバ５０（フロントフロ
ア１上に接合固着され外側端をサイドシル６に，内側端
をフロアトンネル部１１にそれぞれ結合した左右のクロ
スメンバ５１，５１と、フロアトンネル部１１の裏面に
接合固着され該フロアトンネル部１１を介して該左右の
クロスメンバ５１，５１の内側端に連結されるフロアト
ンネル部補強用のクロスメンバ５２とからなる）を設け
たものも従来からある。In order to absorb a large load in the vehicle width direction such as a side collision which cannot be absorbed by the existing first and second cross members 3 and 4, the chain member is indicated by a chain line in FIG. As described above, the third cross member 50 (joined and fixed on the front floor 1, the outer end to the side sill 6, and the inner end to the floor tunnel portion 11) is provided at a substantially intermediate position between the first and second cross members 3 and 4. The left and right cross members 51, 51 respectively joined to the back surface of the floor tunnel portion 11 are joined and fixed to the inner ends of the left and right cross members 51, 51 via the floor tunnel portion 11 for reinforcing the floor tunnel portion. Of the cross member 52).
【０００４】[0004]
【考案が解決しようとする課題】ところが、上記のよう
に第１と第２のクロスメンバ３と４に第３クロスメンバ
５０を設けたものにおいては、該第３クロスメンバ５０
はその設置位置がフロントシートの後部付近に位置しリ
ヤシートに着座した乗員の足元スペースを確保する必要
からその断面積を第１と第２のクロスメンバ３と４ほど
に充分大きくとることができず、従って車幅方向荷重を
充分効果的に伝えることができず、その割りに重量とコ
ストの増加が著しいという課題を有している。However, in the case where the third cross member 50 is provided in the first and second cross members 3 and 4 as described above, the third cross member 50 is not provided.
Since the installation position is located near the rear part of the front seat and it is necessary to secure a foot space for the occupant seated on the rear seat, the cross-sectional area cannot be sufficiently large as the first and second cross members 3 and 4. Therefore, the load in the vehicle width direction cannot be transmitted sufficiently effectively, and the weight and cost are significantly increased.
【０００５】本考案は上記従来の課題に対処することを
主目的とするものである。[0005] The present invention has as its main object to address the above conventional problems.
【０００６】[0006]
【課題を解決するための手段】本考案は上記のように第
１クロスメンバと第２クロスメンバとを設けた自動車の
フロアにおいて、それら２つのクロスメンバのほぼ中間
位置にてフロア上に接合固着され外側端をサイドシルに
固着した第３クロスメンバの内側端を、フロアトンネル
部に固着せず該フロアトンネル部側面近傍に所定の隙間
をもって対向するよう構成したことを特徴とするもので
ある。According to the present invention, a vehicle is provided with a first cross member and a second cross member as described above, and is bonded and fixed to the floor at a substantially intermediate position between the two cross members. The inner end of the third cross member, the outer end of which is fixed to the side sill, is not fixed to the floor tunnel portion, but faces the vicinity of the side surface of the floor tunnel portion with a predetermined gap.
【０００７】[0007]
【作用】上記により、側面衝突等によってサイドシルや
センタピラーに入力した大荷重は、従来通り第１と第２
のクロスメンバからフロアトンネル部へと伝わるが、こ
れらで吸収されなかった荷重や特にセンタピラーからサ
イドシルをねじるように入力した荷重については、第３
クロスメンバから、第１と第２クロスメンバ，サイドシ
ル，フロアトンネル部の剛節構造によって四方をかため
られたフロア面のせん断場へと伝わり、第３クロスメン
バの断面積が小さくてもフロア面を構造部材の補助材と
して有効に使って大荷重の吸収が効果的に行われる。According to the above, the large load input to the side sill or the center pillar due to a side collision or the like is reduced to the first and second loads as in the conventional case.
The load transmitted from the cross member to the floor tunnel portion but not absorbed by these, especially the load input to twist the side sill from the center pillar,
From the cross member, the first and second cross members, the side sill, and the rigidity structure of the floor tunnel portion are transmitted to the shear field on the floor surface which is folded in all directions, and even if the cross-sectional area of the third cross member is small, the floor surface is reduced. Is effectively used as an auxiliary material for a structural member, so that a large load can be effectively absorbed.
【０００８】又第３クロスメンバは、フロアトンネル部
の手前で切れた構造であり、且つ従来の第３クロスメン
バのフロアトンネル部補強用クロスメンバ（図中にて符
号５２で表わされているクロスメンバ）が不要となるの
で、重量及びコストの大幅な低減をはかることができ
る。The third cross member has a structure cut in front of the floor tunnel portion, and is a cross member for reinforcing the floor tunnel portion of the conventional third cross member (indicated by reference numeral 52 in the drawing). Since the cross member is not required, the weight and cost can be significantly reduced.
【０００９】[0009]
【実施例】以下本考案の実施例を図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１乃至図３において、１はフロントフロ
ア、２はリヤフロア、３は第１クロスメンバ、４は第２
クロスメンバであり、第１クロスメンバ３はフロントフ
ロア１上に接合固着され外側端をサイドシル６に，内側
端をフロアトンネル部１１の側面にそれぞれ接合固着さ
れた左右のクロスメンバ３１，３１と、フロアトンネル
部１１の裏面に接合固着され両側端を該フロアトンネル
部１１の側面を介して上記左右のクロスメンバ３１，３
１の内側端に接合固着されたフロアトンネル部補強用の
クロスメンバ３２とにより構成され、第２クロスメンバ
４はフロントフロア１の後端部からリヤフロア２の前端
部に至る立ち上り部に構成され両側端が左右のサイドシ
ル６，６に固着され中央部がフロアトンネル部１１に結
合された構造となっており、以上の構造は従来より既存
のものと同じである。1 to 3, 1 is a front floor, 2 is a rear floor, 3 is a first cross member, and 4 is a second cross member.
The first cross member 3 is a cross member, and the first cross member 3 is joined and fixed on the front floor 1, and the left and right cross members 31, 31 whose outer end is fixed to the side sill 6 and whose inner end is fixed to the side surface of the floor tunnel portion 11. The left and right cross members 31, 3 are joined and fixed to the back surface of the floor tunnel portion 11, and both side ends thereof are passed through the side surfaces of the floor tunnel portion 11.
And a cross member 32 for reinforcing the floor tunnel portion which is joined and fixed to the inner end of the first floor 1. The second cross member 4 is formed at a rising portion from the rear end of the front floor 1 to the front end of the rear floor 2. The end is fixed to the left and right side sills 6, 6, and the center is connected to the floor tunnel 11. The above structure is the same as the existing one.
【００１１】５，５は左右の第３クロスメンバであり、
該第３クロスメンバ５は図３に示すように前後縁にフラ
ンジ部５ｂ，５ｂをもった扁平なほぼハット型断面形状
をなし、外側端近傍には図１及び図２に示すようなシー
ト取付部５ａが上方に膨出形成され、該外側端をサイド
シル６にスポット溶接等にて接合固着すると共にフラン
ジ部５ｂ，５ｂをフロントフロア１上にスポット溶接等
により接合固着して取付けられ、その内側端はフロアト
ンネル部１１とは結合されず該フロアトンネル部１１の
側面近傍に所定の隙間をもって対向した構造となってい
る。Reference numerals 5 and 5 denote left and right third cross members,
As shown in FIG. 3, the third cross member 5 has a flat, substantially hat-shaped cross-sectional shape having flange portions 5b, 5b at the front and rear edges, and a seat attachment as shown in FIGS. A portion 5a is formed to bulge upward, and the outer end is joined and fixed to the side sill 6 by spot welding or the like, and the flange portions 5b, 5b are joined and fixed to the front floor 1 by spot welding or the like, and are mounted inside. The end is not coupled to the floor tunnel portion 11 and has a structure facing the vicinity of the side surface of the floor tunnel portion 11 with a predetermined gap.
【００１２】該第３クロスメンバ５の設置位置は、第１
クロスメンバ３と第２クロスメンバ４との間のほぼ中間
位置でセンタピラー７の下部近傍とすることが望まし
い。The installation position of the third cross member 5 is the first
It is desirable that the center member 7 be located near the lower portion of the center pillar 7 at a substantially intermediate position between the cross member 3 and the second cross member 4.
【００１３】フロアトンネル部１１は従来より周知のご
とく、リンホースメント１２により補強されており、該
フロアトンネル部１１の上記第３クロスメンバ内側端と
対向する位置にはシート取付部１１ａが上方に膨出形成
されている。As is conventionally known, the floor tunnel 11 is reinforced by a link reinforcement 12, and a seat mounting portion 11a is provided at a position facing the inner end of the third cross member of the floor tunnel 11 so as to face upward. The bulge is formed.
【００１４】尚前記第１クロスメンバ３にもシート取付
部３ａ，３ａが形成され、フロントシート８を該第１ク
ロスメンバ３のシート取付部３ａ，３ａと第３クロスメ
ンバ５のシート取付部５ａとフロアトンネル部１１のシ
ート取付部１１ａの４点にて取付支持するようになって
いる。９はシート取付部５ａと１１ａに設けたウエルデ
ィングナット、１０はインシュレータ１０ａとマット１
０ｂとからなるフロア敷設材であり、上記第３クロスメ
ンバ５の外側端近傍以外の一般断面部は図３に示すよう
にフロア敷設材１０の厚みの範囲内におさまり後席乗員
の足元の邪魔になることのないよう充分に扁平な形状に
構成されている。The first cross member 3 is also provided with sheet mounting portions 3a, 3a, and the front seat 8 is connected to the sheet mounting portions 3a, 3a of the first cross member 3 and the sheet mounting portion 5a of the third cross member 5. And at four points of the seat mounting portion 11a of the floor tunnel portion 11. 9 is a welding nut provided on the seat mounting portions 5a and 11a, 10 is an insulator 10a and a mat 1
0b, and the general cross-section other than near the outer end of the third cross member 5 fits within the range of the thickness of the floor laying material 10 as shown in FIG. It is configured to be sufficiently flat so as not to be formed.
【００１５】上記において、側面衝突によってサイドシ
ル６やセンタピラー７に入った大荷重は、従来通り第１
クロスメンバ３や第２クロスメンバ４からフロアトンネ
ル部１１方向へと伝わるが、これらで吸収されなかった
荷重や特にセンタピラー７からのサイドシル６をねじる
荷重については第３クロスメンバ５の上面から、第１と
第２のクロスメンバ３と４，サイドシル６，フロアトン
ネル部１１によって四方を固められたフロントフロア面
のせん断場へと伝えられ、該フロントフロア面を構造部
材の補助材として有効に使って大荷重の吸収が行われ
る。In the above description, the large load that has entered the side sill 6 and the center pillar 7 due to the side collision,
The load transmitted from the cross member 3 and the second cross member 4 to the floor tunnel portion 11 but not absorbed by these components, and in particular, the load that twists the side sill 6 from the center pillar 7, is obtained from the upper surface of the third cross member 5. The first and second cross members 3 and 4, the side sill 6, and the floor tunnel portion 11 are transmitted to the shearing area of the front floor surface solidified on all sides, and the front floor surface is effectively used as an auxiliary material for structural members. Large load is absorbed.
【００１６】上記荷重の伝達を従来構造との比較におい
て模型的に示したのが図５（Ａ），（Ｂ）である。FIGS. 5A and 5B schematically show the transmission of the load in comparison with a conventional structure.
【００１７】即ち図４に示す従来構造のものは図５
（Ｂ）に示すように、第１と第２と第３のクロスメンバ
３と４と５０，サイドシル６，フロアトンネル部１１は
すべて剛節結合のラーメン構造であるから、第３クロス
メンバ５０の外側端より入力した車幅方向荷重ａは矢印
ｃのごとくストレートにフロアトンネル部１１方向に伝
わり、該第３クロスメンバ５０の断面が後席乗員の足元
スペースの邪魔にならない程度に扁平であると該第３ク
ロスメンバ５０による荷重吸収はあまり効果的には行わ
れ得ない。That is, the conventional structure shown in FIG.
As shown in (B), the first, second, and third cross members 3, 4, and 50, the side sill 6, and the floor tunnel portion 11 are all rigid-joint rigid frame structures. The load a in the vehicle width direction input from the outer end is transmitted straight toward the floor tunnel portion 11 as shown by an arrow c, and the cross section of the third cross member 50 is flat enough to not obstruct the foot space of the rear passenger. The load absorption by the third cross member 50 cannot be performed very effectively.
【００１８】それに比し本考案の場合は、図５（Ａ）に
示すように、第３クロスメンバ５の内側端がフロアトン
ネル部１１に結合されていないので、車幅方向荷重ａが
第３クロスメンバ５の外側端に入力すると、第１と第２
のクロスメンバ３と４，サイドシル６，フロアトンネル
部１１の剛節結合によるラーメン構造で四方を固められ
たフロントフロア１と第３クロスメンバ５とのせん断に
より該荷重は矢印ｂのごとくフロア面へと伝わり、これ
により第３クロスメンバ５が扁平断面であってもフロア
面の有効利用によって比較的大きな荷重吸収効果を得る
ことができるものである。In contrast, in the case of the present invention, as shown in FIG. 5A, the inner end of the third cross member 5 is not connected to the floor tunnel portion 11, so that the load a in the vehicle width direction is reduced to the third. When input is made to the outer end of the cross member 5, the first and second
The load is applied to the floor surface as shown by arrow b by shearing between the front floor 1 and the third cross member 5 which are fixed in all directions in a rigid frame structure by rigid connection of the cross members 3 and 4, the side sill 6, and the floor tunnel portion 11 of FIG. Accordingly, even if the third cross member 5 has a flat cross section, a relatively large load absorbing effect can be obtained by effectively utilizing the floor surface.
【００１９】[0019]
【考案の効果】以上のように本考案によれば、フロア
に、前方の第１クロスメンバと後方の第２クロスメンバ
とを固設し、その中間部に第３クロスメンバを設けたも
のにおいて、フロア上面に接合固着し外側端をサイドシ
ルに固着した該第３クロスメンバの内側端を、フロアト
ンネル部に固着せず該内側端がフロアトンネル部に所定
の隙間をもって対向する構造としたことにより、従来の
ものより小型，軽量の第３クロスメンバにて従来より効
果的な車幅方向荷重の吸収を行うことができるもので、
第３クロスメンバの材料歩留まりの向上，車体への固着
工数の低減，それに伴なう大幅なコストダウンをはかり
得ることと相俟って実用上多大の効果をもたらし得るも
のである。As described above, according to the present invention, the first cross member at the front and the second cross member at the rear are fixed to the floor, and the third cross member is provided at an intermediate portion. The inner end of the third cross member joined and fixed to the upper surface of the floor and the outer end is fixed to the side sill is not fixed to the floor tunnel portion, and the inner end faces the floor tunnel portion with a predetermined gap. The third cross member, which is smaller and lighter than the conventional one, can absorb the load in the vehicle width direction more effectively than the conventional one.
The material yield of the third cross member can be improved, the number of steps for fixing the third cross member to the vehicle body can be reduced, and the cost can be significantly reduced.
【図１】本考案の実施例を示す要部斜視図である。FIG. 1 is a perspective view of a main part showing an embodiment of the present invention.
【図２】図１のＸ−Ｘ断面図である。FIG. 2 is a sectional view taken along line XX of FIG.
【図３】図２のＹ−Ｙ断面図である。FIG. 3 is a sectional view taken along line YY of FIG. 2;
【図４】従来のフロア補強部の一例を示すもので、
（Ａ）は斜視図、（Ｂ）は（Ａ）のＺ−Ｚ断面図であ
る。FIG. 4 shows an example of a conventional floor reinforcement.
(A) is a perspective view, (B) is a ZZ sectional view of (A).
【図５】本考案のものと従来のものとの荷重伝達機能の
違いを説明する説明図で、（Ａ）は本考案のもの，
（Ｂ）は従来のものを示している。5A and 5B are explanatory diagrams for explaining a difference in a load transmission function between the present invention and a conventional one. FIG.
(B) shows a conventional one.
１ フロントフロア ２ リヤフロア ３ 第１クロスメンバ ４ 第２クロスメンバ ５ 第３クロスメンバ ６ サイドシル ７ センタピラー ８ フロントシート Reference Signs List 1 front floor 2 rear floor 3 first cross member 4 second cross member 5 third cross member 6 side sill 7 center pillar 8 front seat
Claims (2)
側端をサイドシルに，内側端をフロアトンネル部にそれ
ぞれ固着された左右のクロスメンバとフロアトンネル部
に固着され両端部を上記左右のクロスメンバの内側端に
固着されたフロアトンネル部補強用のクロスメンバとか
らなる第１クロスメンバと、該第１クロスメンバの後方
位置においてフロアに接合固着され両側端を左右のサイ
ドシルに固着され中央部をフロアトンネル部に固着した
第２クロスメンバとを設けた自動車において、上記第１
クロスメンバと第２クロスメンバのほぼ中間位置のフロ
ア上に接合固着され外側端がサイドシルに固着され内側
端が上記フロアトンネル部側面近傍に所定の隙間をもっ
て対向する左右の第３クロスメンバを設けたことを特徴
とする自動車フロアの補強構造。1. A left and right cross member joined to and fixed to a floor, and an outer end fixed to a side sill, and an inner end fixed to a floor tunnel, and both ends fixed to the floor tunnel. A first cross member comprising a floor tunnel portion reinforcing cross member fixed to the inner end of the member, and a central portion fixed to the floor at a position rearward of the first cross member and having both side ends fixed to left and right side sills. And a second cross member fixed to the floor tunnel portion.
The inner end is substantially fixed joint secured to the outer end on the intermediate position floor in the side sill of the cross member and the second cross member is provided with a third cross member left and right to face each other with a predetermined gap in the vicinity of the floor tunnel portion side A reinforcement structure for an automobile floor, characterized in that:
フロントシートの前部取付部が形成され、第３クロスメ
ンバの外側端近傍とフロアトンネル部の上記第３クロス
メンバ内側端にほぼ対向する位置とにフロントシートの
後部取付部が形成されていることを特徴とする自動車フ
ロアの補強構造。2. The first cross member according to claim 1, wherein a front seat mounting portion of the front seat is formed, and substantially near an outer end of the third cross member and an inner end of the third cross member of the floor tunnel portion. A reinforcing structure for an automobile floor, wherein a rear mounting portion of a front seat is formed at an opposing position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991111322U JP2567290Y2 (en) | 1991-12-20 | 1991-12-20 | Car floor reinforcement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991111322U JP2567290Y2 (en) | 1991-12-20 | 1991-12-20 | Car floor reinforcement structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0554167U JPH0554167U (en) | 1993-07-20 |
| JP2567290Y2 true JP2567290Y2 (en) | 1998-04-02 |
Family
ID=14558283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991111322U Expired - Lifetime JP2567290Y2 (en) | 1991-12-20 | 1991-12-20 | Car floor reinforcement structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2567290Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112659985B (en) * | 2020-12-29 | 2022-12-23 | 宜宾凯翼汽车有限公司 | Car seat crossbeam structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109276U (en) * | 1987-01-08 | 1988-07-14 | ||
| JPS63269787A (en) * | 1987-04-27 | 1988-11-08 | Mazda Motor Corp | Body structure of automobile |
-
1991
- 1991-12-20 JP JP1991111322U patent/JP2567290Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0554167U (en) | 1993-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |