JP2008195372A - Reinforcing structure of vehicle body lower part - Google Patents
Reinforcing structure of vehicle body lower part Download PDFInfo
- Publication number
- JP2008195372A JP2008195372A JP2007153741A JP2007153741A JP2008195372A JP 2008195372 A JP2008195372 A JP 2008195372A JP 2007153741 A JP2007153741 A JP 2007153741A JP 2007153741 A JP2007153741 A JP 2007153741A JP 2008195372 A JP2008195372 A JP 2008195372A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle body
- brace
- compartment floor
- passenger compartment
- bent
- 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.)
- Pending
Links
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
Description
本発明は車体下部の補強構造、特に車体の捩じれ剛性を強化する補強構造に関する。 The present invention relates to a reinforcement structure for a lower part of a vehicle body, and more particularly to a reinforcement structure for enhancing torsional rigidity of a vehicle body.
自動車の、特に固定ルーフ部の無いオープンカーはルーフ部のある普通乗用車に比べて車体の捩じれ剛性が低くなる。このため、オープンカーでは車体の捩じれ共振周波数が著しく低下し、車両走行時にサスペンションからの入力等で車体が捩じれ振動しやすいといった不具合がある。そこで従来のオープンカーでは、車室フロア側と、車室フロアから前方へ延出するフロントサイドメンバの延出部側とをブレースで連結して車体の捩じれ振動を逓減することが行なわれている(例えば、特許文献1参照。)。 An automobile, particularly an open car without a fixed roof part, has a lower torsional rigidity of the vehicle body than an ordinary passenger car with a roof part. For this reason, in an open car, the torsional resonance frequency of the vehicle body is remarkably lowered, and there is a problem that the vehicle body is liable to torsionally vibrate due to input from the suspension or the like when the vehicle is traveling. Therefore, in the conventional open car, the torsional vibration of the vehicle body is reduced by connecting the passenger compartment floor side and the extension side of the front side member extending forward from the passenger compartment floor with a brace. (For example, refer to Patent Document 1).
図8はこの種の従来の代表的な補強構造を示し、車両前後方向に平行に延びる左右のフロントサイドメンバ1,1は、後半の基端部が車室フロアFの下面に沿って結合され、前半が車室フロアFの前縁から前方のエンジンルーム側に延出されている。フロントサイドメンバ1,1の前半の延出部には、車幅方向にクロスメンバ(サスペンションクロスメンバ)2が架設されている。車室フロアFの左右両側縁沿いにはロッカー3,3が設置され、かつ車室フロアF上面には車幅方向に左右両側縁のロッカー3,3間を架けわたすフロアクロスメンバ4が、左右のフロントサイドメンバ1,1の基端部と交差するように設けられている。 FIG. 8 shows a conventional representative reinforcing structure of this type. The left and right front side members 1 and 1 extending in parallel with the vehicle longitudinal direction are joined at the rear end of the rear side along the lower surface of the passenger compartment floor F. The first half extends from the front edge of the vehicle compartment floor F to the front engine room side. A cross member (suspension cross member) 2 is installed in the vehicle width direction on the first half of the front side members 1 and 1. Lockers 3 and 3 are installed along the left and right side edges of the passenger compartment floor F, and the floor cross member 4 extending between the left and right side lockers 3 and 3 in the vehicle width direction is provided on the upper surface of the passenger compartment floor F. The front side members 1 and 1 are provided so as to intersect with the base end portions.
そして、車室フロアF下面側の左右のフロントサイドメンバ1,1の基端部と、延出部のクロスメンバ2の車幅方向中央部とを金属製の棒材またはパイプ材からなる左右一対のブレース5,5で平面視ほぼV字形に連結することが行なわれている。これら左右のブレース5,5を設けることにより、車体の捩じれ共振周波数が著しく低下するのを防ぎ、車両走行時のフロントサスペンションからの入力等による車体の捩じれ振動を防ぐ。
ところで、オープンカーはルーフ部のある普通乗用車をベースに生産され普通乗用車と共通の車体下部構造が適用されるので、取付スペースの関係から左右のブレース5,5は比較的小径の金属棒材またはパイプ材が用いられる。しかしながら小径の金属棒材またはパイプ材からなるブレース5,5では車体の捩じれ剛性強化の効果が必ずしも充分とは言えず、車両走行時の速度や路面状況などの条件により車体が捩じれ振動するおそれがある。また直線状の棒材やパイプ材からなるブレース5,5ではフロントサスペンションからの入力がそのまま車室フロア側に伝わって、走行時に乗員にゴツゴツ感が与えられ乗り心地性があまりよいとは言えない。そこで本発明は、車体の捩じれ振動を確実に逓減し、良好な乗り心地性能を発揮させることができる車体下部の補強構造を提供することを課題としてなされたものである。 By the way, an open car is produced on the basis of a normal passenger car having a roof part, and a lower body structure common to that of a normal passenger car is applied. Therefore, the left and right braces 5, 5 are relatively small-diameter metal bars or Pipe material is used. However, braces 5 and 5 made of small-diameter metal bars or pipes do not always have a sufficient effect of strengthening the torsional rigidity of the vehicle body, and the vehicle body may be twisted and vibrated depending on conditions such as speed and road surface conditions during vehicle travel. is there. In addition, in the braces 5 and 5 made of straight bars and pipes, the input from the front suspension is transmitted to the passenger compartment floor as it is, and the rider feels stuffy when traveling and the ride comfort is not very good. . Accordingly, an object of the present invention is to provide a reinforcing structure for a lower part of a vehicle body that can surely reduce torsional vibration of the vehicle body and exhibit good riding comfort performance.
本発明は、車室フロア下面側の左右両側位置と、車室フロアから延出する左右のサイドメンバの延出部間に架設されたクロスメンバの車幅方向中央部とを、左右一対のブレースで平面視ほぼV字形に連結した車体下部の補強構造において、 各ブレースを、その長手方向中間位置が緩やかな鈍角状に屈曲して上方へ向けて開き形状をなすほぼく字形に形成し、各ブレースの基端を車室フロアの左右の両側縁に沿って設置されたロッカーに連結し、先端を上記クロスメンバの中央部に連結し、上記ブレースの中間の屈曲部と、該屈曲部の上方の車体下部とを緩衝部材により上下方向に連結せしめる(請求項1)。
ブレースにより車室フロア下面側の左右両側位置とサイドメンバ側のクロスメンバの車幅方向中央部とを連結して、車両走行時のサスペンションの入力等により車幅方向左右へ変位するクロスメンバ中央部の振動を抑えつつ、ブレースを上方へ向けて開いたほぼく字形に形成したので、ブレースに変形性を与え、ブレースの変形による屈曲部の上下の変位を、屈曲部と車体とを上下に連結する緩衝部材で抑制するとともにこれらのバネ性能により車体の捩じれ振動を減衰することができ、良好な乗り心地を実現する効果を奏する。
The present invention relates to a pair of left and right braces between the left and right side positions on the lower surface side of the passenger compartment floor and the center portion in the vehicle width direction of the cross member extending between the extension portions of the left and right side members extending from the passenger compartment floor. In the reinforcing structure of the lower part of the vehicle body connected in a substantially V shape in plan view, each brace is formed in a substantially square shape that is bent in an obtuse angle at the middle in the longitudinal direction and opens upward. The base end of the brace is connected to a rocker installed along the left and right side edges of the passenger compartment floor, the tip is connected to the center of the cross member, the middle bent part of the brace, and the upper part of the bent part The lower part of the vehicle body is connected in the vertical direction by a buffer member (claim 1).
A cross member central portion that is displaced to the left and right in the vehicle width direction by a suspension input or the like when the vehicle travels by connecting the left and right side positions on the lower side of the passenger compartment floor with braces to the vehicle width direction central portion of the cross member on the side member side. The brace is formed in an almost square shape that opens upward while suppressing vibration of the brace, so that the brace is deformable, and the bending part and the vehicle body are connected vertically by the bending part and the body displacement due to the deformation of the brace. It is possible to suppress the torsional vibration of the vehicle body by these spring performances and to suppress the torsional vibration of the vehicle body, and to achieve an excellent ride comfort.
上記左右のロッカーの前端付近と、左右のフロントサイドメンバの車室フロアから前方へ延出する延出部間に架設されたフロントサスペンションクロスメンバの車幅方向中央部とを、上記ブレースで連結せしめる(請求項2)。
上記左右のロッカーの後端付近と、左右のリヤサイドメンバの車室フロアから後方へ延出する延出部間に架設されたリヤサスペンションクロスメンバの車幅方向中央部とを、上記ブレースで連結せしめる(請求項3)。
本発明は車体のフロント側およびリヤ側の補強に適用され得る。
The brace connects the vicinity of the front ends of the left and right rockers to the center part in the vehicle width direction of the front suspension cross member that extends between the extension parts extending forward from the passenger compartment floor of the left and right front side members. (Claim 2).
The brace connects the vicinity of the rear ends of the left and right rockers and the center part in the vehicle width direction of the rear suspension cross member that is extended between the extension portions extending rearward from the passenger compartment floor of the left and right rear side members. (Claim 3).
The present invention can be applied to the reinforcement of the front side and the rear side of the vehicle body.
上記ブレースは屈曲部の屈曲角度を、150度から170度の範囲に設定する(請求項4)。
車室フロアの左右の前後逆相の変形によるブレースの両端の連結部間の間隔の変化をブレースの屈曲部の上下方向のストロークの大きな変位に置き換えることで緩衝部材を効率よく作動させることができる。
In the brace, the bending angle of the bent portion is set in the range of 150 to 170 degrees.
The cushioning member can be operated efficiently by replacing the change in the distance between the connecting portions at both ends of the brace due to the deformation of the left and right reverse phases of the left and right sides of the passenger compartment floor with a large displacement of the vertical stroke of the bent portion of the brace. .
上記緩衝部材を、上記ブレースの中間の屈曲部と車体下部との間に上下方向かつ傾斜状に架けわたし、該緩衝部材の傾斜姿勢とは反対向きの傾斜姿勢で上記屈曲部と車体下部とを上下方向かつ傾斜状に連結する補助部材を設ける(請求項5)。
緩衝部材を上下方向かつ傾斜状に配置するので緩衝部材の設置スペースを確保することができ、比較的に大型で緩衝性能のよい緩衝部材を用いることができる。
ブレースの屈曲部の上下の変位は、屈曲部と車体下部とを傾斜状につなぐ補助部材により、補助部材の車体下面との固定部付近を中心に回転するように規制され、この変位を緩衝部材が効率よく抑制する。
The cushioning member is mounted between the middle bent part of the brace and the lower part of the vehicle body in an up-down direction and in an inclined manner, and the bent part and the lower part of the vehicle body are connected in an inclined posture opposite to the inclined posture of the buffer member. An auxiliary member connected in the vertical direction and in an inclined shape is provided.
Since the buffer member is arranged in the vertical direction and in an inclined shape, a space for installing the buffer member can be secured, and a buffer member having a relatively large size and good buffer performance can be used.
The vertical displacement of the bent part of the brace is restricted by the auxiliary member that connects the bent part and the lower part of the vehicle body in an inclined manner so as to rotate around the fixed part of the auxiliary member to the lower surface of the vehicle body. Suppresses efficiently.
上記緩衝部材を、車室フロアから延出する上記サイドメンバの延出部と上記ブレースの中間の屈曲部とを上下方向に傾斜姿勢で連結するように設け、
上記補助部材を、車室フロアの下面に沿う上記サイドメンバの基端部と上記ブレースの中間の屈曲部とを上下方向に傾斜姿勢で連結するように設ける(請求項6)。
車室フロアから延出する上記サイドメンバの延出部の下側には空間があり、緩衝部材を設置するのに好適である。
The buffer member is provided so as to connect the extending portion of the side member extending from the passenger compartment floor and the intermediate bent portion of the brace in an inclined posture in the vertical direction,
The auxiliary member is provided so as to connect the base end portion of the side member along the lower surface of the passenger compartment floor and the intermediate bent portion of the brace in an inclined posture in the vertical direction.
There is a space below the extension portion of the side member extending from the passenger compartment floor, which is suitable for installing a buffer member.
上記緩衝部材と上記補助部材との間の開き角度を鈍角状に形成する(請求項7)。
補助部材により規制され、補助部材の車体下面との固定部付近を中心とする円弧に沿って変位するブレースの屈曲部の変位を緩衝部材により効率よく抑制することができる。
An opening angle between the buffer member and the auxiliary member is obtusely formed (Claim 7).
The buffer member can efficiently suppress the displacement of the bent portion of the brace that is restricted by the auxiliary member and is displaced along an arc centering around the vicinity of the fixed portion of the auxiliary member to the lower surface of the vehicle body.
上記緩衝部材として、上記ブレースの屈曲部の上下方向の変位を抑制するように設けた液圧式ダンパー装置で構成する(請求項8)。
緩衝部材として液圧式ダンパー装置を好適に用いることができる。
The buffer member is constituted by a hydraulic damper device provided to suppress the vertical displacement of the bent portion of the brace.
A hydraulic damper device can be suitably used as the buffer member.
本発明を適用して車体前側の下部を好適に補強する実施形態を説明する。図1、図2に示すように、車体前側の下部には、左右両側に前後方向に延びる一対のフロントサイドメンバ1,1がほぼ平行に設けてある。左右のフロントサイドメンバ1,1は、前方のエンジンルーム側に延出する延出部1aの後端は屈曲して後斜め下方へ延びる傾斜部1bとなり、傾斜部1bの下端から後方へ延びる基端部1cは延出部1aよりも一段低くしてある。基端部1cは車室フロアFの下面に沿って結合してある。 An embodiment in which the present invention is applied to suitably reinforce the lower part on the front side of the vehicle body will be described. As shown in FIGS. 1 and 2, a pair of front side members 1, 1 extending in the front-rear direction on both the left and right sides are provided substantially parallel to the lower part on the front side of the vehicle body. The left and right front side members 1, 1 are bent at the rear end of the extending portion 1 a extending to the front engine room side to form an inclined portion 1 b extending obliquely downward, and extending backward from the lower end of the inclined portion 1 b. The end 1c is one step lower than the extension 1a. The base end portion 1c is coupled along the lower surface of the passenger compartment floor F.
左右のフロントサイドメンバ1,1には延出部1aと傾斜部1bとの境の下方位置に、車幅方向にフロントサスペンションクロスメンバ(以下、単にフロントクロスメンバという)2が架設してある。フロントクロスメンバ2は、中央に開口部を有する略枠状に形成してある。 Front suspension cross members (hereinafter simply referred to as front cross members) 2 are installed in the vehicle width direction on the left and right front side members 1 and 1 below the boundary between the extending portion 1a and the inclined portion 1b. The front cross member 2 is formed in a substantially frame shape having an opening at the center.
フロントクロスメンバ2は、左右両端の前部25を左右のフロントサイドメンバ1,1の延出部1aの下面後端にボルト締め固定し、左右両端の後部26を左右の傾斜部1bの下面中間位置にボルト締め固定してある。フロントクロスメンバ2は、その下面の高さ位置がフロントサイドメンバ1の基端部1cとほぼ同じか若干低い位置に配設してある。 The front cross member 2 is fastened with bolts at the front portions 25 at the left and right ends to the lower rear ends of the extending portions 1a of the left and right front side members 1 and 1, and the rear portions 26 at the left and right ends are intermediate between the lower surfaces of the left and right inclined portions 1b. It is bolted in place. The front cross member 2 is disposed at a position where the height of the lower surface of the front cross member 2 is substantially the same as or slightly lower than the base end portion 1 c of the front side member 1.
車室フロアFの左右の両側縁にはこれらに沿ってロッカー3,3が設けてある。左右のロッカー3,3はフロントサイドメンバ1の基端部1cとほぼ同じ高さ位置に設置され、前端がそれぞれ車室フロアFの左右の前縁に沿って車幅方向に延びるフロアクロスメンバ40,40により左右のフロントサイドメンバ1,1の基端部1cの前端と連結してある。また左右のロッカー3,3中間位置には、車室フロアFの上面に沿って車幅方向にこれらを架けわたすフロアクロスメンバ4が設置してあり、フロアクロスメンバ4が左右のフロントサイドメンバ1,1の基端部1cと交差するように設けてある。図2のDは車室フロアFの前縁から起立するダッシュパネルを示す。 Lockers 3 and 3 are provided along the left and right side edges of the passenger compartment floor F. The left and right rockers 3, 3 are installed at substantially the same height as the base end portion 1c of the front side member 1, and the floor cross members 40 whose front ends extend in the vehicle width direction along the left and right front edges of the passenger compartment floor F, respectively. , 40 are connected to the front ends of the base end portions 1c of the left and right front side members 1,1. Further, a floor cross member 4 is installed at the middle position between the left and right lockers 3 and 3 along the upper surface of the passenger compartment floor F in the vehicle width direction. The floor cross member 4 is connected to the left and right front side members 1. , 1 so as to intersect with the base end portion 1c. 2D shows a dash panel that stands up from the front edge of the passenger compartment floor F. FIG.
左右のロッカー3,3とフロントクロスメンバ2の幅方向中央部とは、左右一対のブレース5,5で平面視ほぼV字形に連結してある。左右のブレース5,5は同一で、金属製の丸パイプ材からなり、長手方向の中間部が緩やかな鈍角状に屈曲して上方へ向けて開き形状をなすほぼく字形に形成してある。ブレース5の中間の屈曲部51はその屈曲角度が約160度に設定してある。ブレース5の両端52,53はパイプ材を上下に押し潰して平板状にし、ボルト貫通孔を設けた取付部が形成してある。 The left and right rockers 3 and 3 and the central portion in the width direction of the front cross member 2 are connected in a substantially V shape in plan view by a pair of left and right braces 5 and 5. The left and right braces 5 and 5 are the same, and are made of a metal round pipe material. The middle part in the longitudinal direction is bent into a gentle obtuse angle and is formed in a substantially square shape that opens upward. The bending portion 51 in the middle of the brace 5 has a bending angle set to about 160 degrees. Both ends 52 and 53 of the brace 5 are flattened by crushing the pipe material up and down, and mounting portions provided with bolt through holes are formed.
左右のブレース5,5は基端52,52の取付部をそれぞれ左右のロッカー3,3の前端寄りの下面に重ね合わせてボルト締め連結してあり、これら連結部から互いに前方かつ車内側へ向けて斜め傾斜状に延設してある。そして、両者5,5の各先端53,53の取付部を上下に重ね合わせてフロントクロスメンバ2の車幅方向中央部の前部下面にボルト締めして連結してある。尚、左右のブレース5,5の先端53,53はフロントクロスメンバ2の車幅方向中央部付近に車幅方向に隣り合わせて連結してもよい。 The left and right braces 5, 5 are bolted together with the mounting portions of the base ends 52, 52 superimposed on the lower surfaces near the front ends of the left and right rockers 3, 3, respectively. Extending obliquely. And the attachment part of each front-end | tip 53 and 53 of both 5 and 5 is piled up and down, and it bolts and connects with the front lower surface of the center part of the vehicle cross direction of the front cross member 2. The front ends 53 of the left and right braces 5, 5 may be connected adjacent to each other in the vehicle width direction near the center of the front cross member 2 in the vehicle width direction.
左右のブレース5,5の屈曲部51,51は車室フロアFの前縁よりも前側位置で、かつ左右のフロントサイドメンバ1,1の傾斜部1b,1bと対応する下方位置に配置してある。そして、両屈曲部51,51と傾斜部1b,1bとの間には上下方向に緩衝部材たるダンパー6,6が架設してある。 The bent portions 51 and 51 of the left and right braces 5 and 5 are arranged in front of the front edge of the passenger compartment floor F and at lower positions corresponding to the inclined portions 1b and 1b of the left and right front side members 1 and 1, respectively. is there. Dampers 6 and 6 serving as buffer members are installed between the bent portions 51 and 51 and the inclined portions 1b and 1b in the vertical direction.
図3(A),(B)に示すようにダンパー6は周知の油圧式ダンパーで、シリンダ60と、シリンダ60に対して伸縮作動可能に組み付けたピストンロッド61とで構成してある。シリンダ60内はその一端から摺動自在に嵌入したピストンロッド61のピストン63により長手方向に2室に仕切られ、第1油室r1と第2油室r2が形成してある。シリンダ60の上記一端はロッド本体を挿通する蓋部材66で閉じてあり、両油室r1,r2にはオイルが充填してある。 As shown in FIGS. 3A and 3B, the damper 6 is a well-known hydraulic damper, and includes a cylinder 60 and a piston rod 61 assembled to the cylinder 60 so as to be able to extend and contract. The cylinder 60 is partitioned into two chambers in the longitudinal direction by a piston 63 of a piston rod 61 slidably fitted from one end thereof, and a first oil chamber r1 and a second oil chamber r2 are formed. The one end of the cylinder 60 is closed by a lid member 66 that is inserted through the rod body, and both the oil chambers r1 and r2 are filled with oil.
ピストン63には第1油室r1と第2油室r2との間をオイルが行き来可能な複数のオリフイス(***)64,65が設けてあり、一方のオリフイス64にはピストンロッド61の伸長時に第1油室r1から第2油室r2へのオイルの移動を許容する一方、収縮時の移動を禁止する弁が設けてある。他方のオリフイス65には収縮時に第2油室r2から第1油室r1へのオイルの移動を許容し、伸長時の移動を禁止する弁が設けてある。ダンパー6はピストンロッド61の伸縮動作で各オリフイス64,65をオイルが流通し、オイルの流動抵抗によりピストンロッド61の伸縮動作が抑制される。また、ダンパーとしては必ずしも各オリフイス64,65に弁を備えたものを用いる必要はなく、弁のないタイプのダンパーでもよい The piston 63 is provided with a plurality of orifices (small holes) 64, 65 through which oil can move between the first oil chamber r1 and the second oil chamber r2, and one of the orifices 64 is provided when the piston rod 61 is extended. There is provided a valve that allows movement of the oil from the first oil chamber r1 to the second oil chamber r2, while prohibiting movement during contraction. The other orifice 65 is provided with a valve that allows the oil to move from the second oil chamber r2 to the first oil chamber r1 when contracted and prohibits the movement when extended. In the damper 6, the oil flows through the orifices 64 and 65 by the expansion and contraction operation of the piston rod 61, and the expansion and contraction operation of the piston rod 61 is suppressed by the flow resistance of the oil. Further, it is not always necessary to use a damper provided with a valve in each of the orifices 64 and 65, and a damper without a valve may be used.
各ダンパー6,6は、シリンダ60の他端(上端)に設けたリング状の取付部を貫通する支軸により左右のフロントサイドメンバ1,1の傾斜部1b,1bの側面に軸支して前後方向揺動自在に連結してある。そして、ピストンロッド61の下端は、左右のブレース5,5を幅方向に貫通する支軸によりブレース長手方向前後に揺動可能に連結したブラケットを介してピストンロッド61下端のリング状の取付部を左右のブレース5,5の屈曲部51,51に揺動自在に連結してある。尚、ダンパー6,6の下端は、上記ブラケットを使用せず、直接にブレース5,5の屈曲部51,51の側面に揺動自在に軸支してもよい。 The dampers 6 and 6 are pivotally supported on the side surfaces of the inclined portions 1b and 1b of the left and right front side members 1 and 1 by a support shaft that passes through a ring-shaped attachment provided at the other end (upper end) of the cylinder 60. It is connected so as to be swingable in the front-rear direction. The lower end of the piston rod 61 is provided with a ring-shaped mounting portion at the lower end of the piston rod 61 via a bracket that is swingably connected back and forth in the longitudinal direction of the brace by a support shaft that penetrates the left and right braces 5 and 5 in the width direction. The left and right braces 5, 5 are connected to the bent portions 51, 51 in a swingable manner. The lower ends of the dampers 6 and 6 may be pivotally supported directly on the side surfaces of the bent portions 51 and 51 of the braces 5 and 5 without using the bracket.
車両走行時、フロントサスペンション等からの入力等により左右のフロントサイドメンバ1,1の延出部1a,1aが、両者1a,1a間の車幅方向中心線を軸に上下逆相に変位して捩じれ振動が発生することとなる。この場合、左右の延出部1a,1aよりも下側位置に架設したフロントクロスメンバ2ではその車幅方向中央部が左右に変位振動する。
本実施形態では、車室フロアFの左右両側のロッカー3,3と、フロントクロスメンバ2の車幅方向中央部とを平面視V字状に連結する左右の一対のブレース5,5により上記フロントクロスメンバ2の左右の変位振動を抑制し、上記左右のフロントサイドメンバ1,1の延出部1a,1aの捩じれ振動を抑制する効果を奏する。
When the vehicle is running, the extension portions 1a and 1a of the left and right front side members 1 and 1 are displaced in the up and down phase around the center line in the vehicle width direction between the two 1a and 1a due to input from the front suspension or the like. Torsional vibration will occur. In this case, in the front cross member 2 installed below the left and right extending portions 1a and 1a, the center portion in the vehicle width direction is displaced and oscillated left and right.
In the present embodiment, the front and rear rockers 3 and 3 on the left and right sides of the passenger compartment floor F and the pair of left and right braces 5 and 5 that connect the center portion in the vehicle width direction of the front cross member 2 in a V shape in plan view. The left and right displacement vibrations of the cross member 2 are suppressed, and the torsional vibrations of the extending portions 1a and 1a of the left and right front side members 1 and 1 are suppressed.
この場合、左右のブレース5,5は上方へ向けて開き形状をなすほぼく字形に形成して変形性が与えられているから、直線状のブレースを用いたもの(図8)よりも車室フロアFの左右の変位抑制力は若干小さく、ブレース5,5は屈曲部51の屈曲角度が変化して屈曲部51は上下方向に変位するが、屈曲部51とその上方の車体部分との間にはダンパー6が設けてあるから、ダンパー6のバネ弾性により屈曲部51の上下変位は減衰され、これにより車体の捩じれ振動を減衰し、ゴツゴツ感のない良好な乗り心地を実現することができる。 In this case, since the left and right braces 5 and 5 are formed in a substantially square shape that opens upward and is given deformability, the vehicle interior is more than that using a straight brace (FIG. 8). The lateral displacement restraining force of the floor F is slightly small, and the braces 5 and 5 change the bending angle of the bent portion 51 and the bent portion 51 is displaced in the vertical direction, but between the bent portion 51 and the body part above it. Since the damper 6 is provided, the vertical displacement of the bent portion 51 is damped by the spring elasticity of the damper 6, whereby the torsional vibration of the vehicle body is damped, and a good riding comfort without a jerky feeling can be realized. .
左右のブレース5,5は屈曲部51の屈曲角度を鈍角に設定すると、両端52,53の連結部間の間隔の変化に対して、上記屈曲部51の上下の変位量が拡大して現れ、効率よくダンピング効果が奏される。但し、屈曲角度が90度に近づくと変位量の拡大率は小さくなり、反対に直線に近づくと拡大率は大きくなるが突っ張り力が強くなりすぎる。ブレース5,5の屈曲角度は150度〜170度程度に設定することが好ましい。 When the bending angle of the bent portion 51 is set to an obtuse angle, the left and right braces 5 and 5 have an increased amount of vertical displacement of the bent portion 51 with respect to a change in the interval between the connecting portions of both ends 52 and 53. Efficient damping effect is achieved. However, when the bending angle approaches 90 degrees, the enlargement rate of the displacement amount decreases, and conversely, when approaching a straight line, the enlargement rate increases, but the tension force becomes too strong. The bending angle of the braces 5 and 5 is preferably set to about 150 to 170 degrees.
上述の実施形態では車体の前側下部を補強したが、車体の後側下部も補強することが好ましい。以下、図4、図5に基づいて本発明を用いた車体後側下部を補強する他の実施形態を説明する。尚、本実施形態の基本構造は先の実施形態のそれとほぼ同じで、同一部材は同一符号で表しそれらの詳細説明は省略する。 In the above-described embodiment, the front lower part of the vehicle body is reinforced, but it is also preferable to reinforce the rear lower part of the vehicle body. Hereinafter, another embodiment for reinforcing the rear lower portion of the vehicle body using the present invention will be described with reference to FIGS. 4 and 5. The basic structure of this embodiment is almost the same as that of the previous embodiment, and the same members are denoted by the same reference numerals and their detailed description is omitted.
左右のロッカー3,3の後端にはそれぞれ、これらの車内側面から後方へ延びる左右のリヤサイドメンバ7,7が連結してある。左右のリヤサイドメンバ7,7は、平面視、ロッカー3,3後端の連結部から斜めに後方かつ車内側へ向かう傾斜部7bと、その後端から屈曲して後方へ延びる延出部7aとを備えている。またリヤサイドメンバ7,7はロッカー3,3後端の連結部から後端にかけて、側面視、上方へ突出するアーチ状に形成してある。 Left and right rear side members 7, 7 extending rearward from the vehicle inner side surfaces are connected to the rear ends of the left and right rockers 3, 3, respectively. The left and right rear side members 7 and 7 have a plan view, an inclined portion 7b that is obliquely rearward and inward from the connecting portion at the rear end of the rocker 3 and 3, and an extended portion 7a that is bent from the rear end and extends rearward. I have. The rear side members 7 and 7 are formed in an arch shape that protrudes upward in a side view from the connecting portion of the rear end of the rockers 3 and 3 to the rear end.
左右のリヤサイドメンバ7,7間には枠状のリヤサスペンションクロスメンバ(以下、単にリヤクロスメンバという)8が設けてある。リヤクロスメンバ8の左右両端の前部および後部はそれぞれ左右のリヤサイドメンバ7,7の傾斜部7b,7bの下面および延出部7a,7aの下面にボルト締め固定してある。リヤクロスメンバ8の後枠部82は下面がロッカー3の下面とほぼ同じ高さ位置に配設してある。 A frame-shaped rear suspension cross member (hereinafter simply referred to as a rear cross member) 8 is provided between the left and right rear side members 7. The front and rear portions of the left and right ends of the rear cross member 8 are bolted and fixed to the lower surfaces of the inclined portions 7b and 7b of the left and right rear side members 7 and 7 and the lower surfaces of the extending portions 7a and 7a, respectively. The rear frame portion 82 of the rear cross member 8 has a lower surface disposed at substantially the same height as the lower surface of the rocker 3.
左右のロッカー3,3の後端とリヤクロスメンバ8の車幅方向中央部の後縁側とが左右のブレース5,5により平面視、ほぼV字形に連結してある。左右のブレース5,5は基端52,52をそれぞれ左右のロッカー3,3の後端下面にボルト締めして連結してあり、これらの連結部から後方かつ車内側へ向けて斜めに延び、各先端53,53の取付部をそれぞれリヤクロスメンバ8の下面の車幅方向中央部付近に隣り合わせてボルト締めして連結してある。尚、左右のブレース5,5の先端53,53はリヤクロスメンバ8の車幅方向中央部に重ね合わせて連結してもよい。 The rear ends of the left and right rockers 3 and 3 and the rear edge side of the rear cross member 8 in the center in the vehicle width direction are connected to each other in a substantially V shape in plan view by left and right braces 5 and 5. The left and right braces 5 and 5 are connected by bolting the base ends 52 and 52 to the lower surfaces of the rear ends of the left and right rockers 3 and 3, respectively, and extend obliquely rearward and inward of the vehicle from these connecting portions. The attachment portions of the tips 53 and 53 are connected by bolting adjacent to the vicinity of the center portion in the vehicle width direction on the lower surface of the rear cross member 8. The front ends 53 of the left and right braces 5 and 5 may be overlapped and connected to the center of the rear cross member 8 in the vehicle width direction.
左右のブレース5,5の中間の屈曲部51,51はそれぞれ前後中央部よりも基端52寄りの位置に設けてあり、左右のリヤサイドメンバ7,7の傾斜部7b,7bに対応する下方位置に配置してある。そして、両屈曲部51,51と傾斜部7b,7bとの間には上下方向にダンパー6,6が架設してある。各ダンパー6,6は、シリンダ60上端の取付部を支軸により左右のリヤサイドメンバ7,7の傾斜部7b,7bの側面に前後方向揺動自在に軸支し、ピストンロッド61下端の取付部を支軸により左右のブレース5,5の屈曲部51,51の側面に揺動自在に軸支してある。 Bent portions 51, 51 in the middle of the left and right braces 5, 5 are provided at positions closer to the base end 52 than the front and rear central portions, respectively, and lower positions corresponding to the inclined portions 7b, 7b of the left and right rear side members 7, 7. It is arranged in. Dampers 6 and 6 are installed in the vertical direction between the bent portions 51 and 51 and the inclined portions 7b and 7b. Each of the dampers 6 and 6 pivotally supports the mounting portion at the upper end of the cylinder 60 on the side surfaces of the inclined portions 7b and 7b of the left and right rear side members 7 and 7 so as to be swingable in the front-rear direction. Is pivotally supported on the side surfaces of the bent portions 51, 51 of the left and right braces 5, 5 by a support shaft.
本実施形態によれば、先の実施形態と同様の作用効果が得られ、ブレース5とダンパー6の組み合わせによりバネ性能を発揮して捩じれ振動を減衰しつつ乗り心地の向上効果を奏する。 According to this embodiment, the same effect as the previous embodiment is obtained, and the combination of the brace 5 and the damper 6 exhibits the spring performance and exhibits the effect of improving riding comfort while attenuating torsional vibration.
次に、車体前側の下部を補強する本発明の更に他の実施形態を図6、図7に基づいて説明する。本実施形態の基本構造は最初の実施形態のそれとほぼ同じで相違点を中心に説明し、図において同一部材は同一符号で表す。 Next, still another embodiment of the present invention for reinforcing the lower part on the front side of the vehicle body will be described with reference to FIGS. The basic structure of the present embodiment is substantially the same as that of the first embodiment, and differences will be mainly described. In the drawings, the same members are denoted by the same reference numerals.
図6、図7に示すように本実施形態の補強構造では、左右のブレース5の中間屈曲部51と、フロントサイドメンバ1とを上下方向かつ前傾の傾斜姿勢をなすダンパー6Aで連結してある。各ダンパー6Aは先の実施形態のダンパー6と同種の油圧式で先の実施形態のものよりも全長が長いものを用いる。ダンパー6Aは、水平方向に対して傾斜角が30°ないし60°をなす前傾姿勢で、シリンダ60の上端をフロントサイドメンバ1の傾斜部1bとフロントクロスメンバ2の後部26との結合部に軸支して前後方向揺動可能に連結するとともに、ピストンロッド61の下端をブレース5の屈曲部51に前後方向揺動可能に軸支してある。 As shown in FIGS. 6 and 7, in the reinforcing structure of the present embodiment, the intermediate bent portion 51 of the left and right braces 5 and the front side member 1 are connected to each other by a damper 6 </ b> A that has a vertically inclined inclination posture. is there. Each damper 6A is of the same type as the damper 6 of the previous embodiment and has a longer overall length than that of the previous embodiment. The damper 6 </ b> A is in a forward inclined posture with an inclination angle of 30 ° to 60 ° with respect to the horizontal direction, and the upper end of the cylinder 60 is connected to the connecting portion between the inclined portion 1 b of the front side member 1 and the rear portion 26 of the front cross member 2. The lower end of the piston rod 61 is pivotally supported by the bent portion 51 of the brace 5 so as to be swingable in the front-rear direction.
更に、ブレース5の屈曲部51は、ダンパー6Aとは反対向きに傾斜する補助部材9により車室フロアFの下面に沿うフロントサイドメンバ1の基端部1cと連結してある。
補助部材9は金属板からなる左右両縁に補強フランジを備えた浅い断面ほぼコ字形の帯状体またはパイプ材で構成してある。補助部材9は下端をブレース5の屈曲部51にボルト締めし、屈曲部51から上方かつ後方へ向けて水平方向に対して60°ないし30°の後傾姿勢をなし、上端91をフロントサイドメンバ1の基端部1cの下面にボルト締め固定してある。
Further, the bent portion 51 of the brace 5 is connected to the base end portion 1c of the front side member 1 along the lower surface of the passenger compartment floor F by an auxiliary member 9 inclined in the opposite direction to the damper 6A.
The auxiliary member 9 is formed of a strip-shaped body or pipe material having a shallow cross-sectional shape with a reinforcing flange on both left and right edges made of a metal plate. The auxiliary member 9 is bolted at the lower end to the bent portion 51 of the brace 5 and has a rearward inclination of 60 ° to 30 ° with respect to the horizontal direction upward and backward from the bent portion 51, and the upper end 91 is the front side member. 1 is fixed to the lower surface of the base end portion 1c by bolting.
ダンパー6Aと補助部材9との間の角度は鈍角に設定してあり約90°ないし120°の範囲に設定してある。 The angle between the damper 6A and the auxiliary member 9 is set to an obtuse angle and is set to a range of about 90 ° to 120 °.
本実施形態によれば、車体下部のフロントサイドメンバ1の傾斜部1bの下方には空間がありダンパー設置スペースを確保しやすい上、ダンパー6Aを傾斜姿勢としたので傾斜部1b側の固定部とブレース5の屈曲部51との距離を長くでき、先の実施形態の垂直方向に設置するダンパー6に比べて、ダンパー6Aは全長の長い大型にできる。従って、ダンパー6Aは一般的に量産されている安価で、かつ振動減衰性能の高いダンパーを利用でき、経済的である。 According to the present embodiment, there is a space below the inclined portion 1b of the front side member 1 at the lower part of the vehicle body, and it is easy to secure a damper installation space, and the damper 6A is inclined, so the fixed portion on the inclined portion 1b side The distance from the bent portion 51 of the brace 5 can be increased, and the damper 6A can be made large in length and longer than the damper 6 installed in the vertical direction of the previous embodiment. Therefore, the damper 6A is economical because it can use a low-cost damper that is generally mass-produced and has high vibration damping performance.
ブレース5によるフロントサイドメンバ延出部1aの捩じれ振動の抑制時に、ブレース5の屈曲部51にこれを上下方向に変位させる力が作用すると、屈曲部51と車体下部とを連結する後傾の補助部材9がその上端91とフロントサイドメンバ1の基端部1Cとの結合部を中心に起倒揺動し、これによりブレース5の屈曲部51の変位は上記結合部を中心とする補助部材9下端の円弧軌道沿いに規制され、屈曲部51の変位方向と前傾姿勢のダンパー6Aの伸縮方向とがほぼ一致するので、ダンパー6Aにより屈曲部51の変位を減衰する。従って、先の実施形態同様、車体の捩じれ振動を減衰しつつ、良好な乗り心地を実現できる。 When the torsional vibration of the front side member extending portion 1a by the brace 5 is suppressed, if a force that moves the bent portion 51 of the brace 5 in the vertical direction acts on the bent portion 51, the rearward tilt assists connecting the bent portion 51 and the lower portion of the vehicle body. The member 9 swings up and down around the joint portion between the upper end 91 and the base end portion 1C of the front side member 1, and the displacement of the bent portion 51 of the brace 5 thereby causes the auxiliary member 9 around the joint portion. It is regulated along the arcuate track at the lower end, and the displacement direction of the bent portion 51 and the expansion / contraction direction of the forwardly inclined damper 6A substantially coincide with each other, so that the displacement of the bent portion 51 is attenuated by the damper 6A. Therefore, as in the previous embodiment, it is possible to realize a good ride comfort while attenuating torsional vibration of the vehicle body.
本実施形態では車体の前側下部の補強に用いたが、車体の後側下部の補強に用いてもよい。 In this embodiment, it is used to reinforce the front lower part of the vehicle body, but may be used to reinforce the rear lower part of the vehicle body.
尚、上述の複数の実施形態はいずれもすべての点で例示であって本発明の範囲を限定するものではなく、本発明は上述の実施形態を様々に変形、変更したものも含まれる。例えば、上述の実施形態ではいずれも、ブレースにより車室フロア側と、フロントまたはリヤのサスペンションクロスメンバとを連結したが、サスペンションクロスメンバに限らず、他の目的でフロントまたはリヤサイドメンバ間に架設したクロスメンバを用いてもよい。ブレースはパイプ材に限らず棒材としてもよい。またダンパーは油圧式のものに限らず、粘弾性ゴムを2枚の金属板で挟み込み、一方の金属板の上端を車体側へ固定し、他方の金属板の下端をブレースの屈曲部側に固定する構造としてもよい。 In addition, all the above-mentioned several embodiment is an illustration in all the points, and does not limit the scope of the present invention, The present invention includes what variously modified and changed the above-mentioned embodiment. For example, in each of the above-described embodiments, the vehicle compartment floor side and the front or rear suspension cross member are connected by braces, but the suspension cross member is not limited to the suspension cross member, and is installed between the front or rear side members for other purposes. A cross member may be used. The brace is not limited to a pipe material but may be a bar material. The damper is not limited to a hydraulic type, and viscoelastic rubber is sandwiched between two metal plates, the upper end of one metal plate is fixed to the vehicle body side, and the lower end of the other metal plate is fixed to the bent portion side of the brace. It is good also as a structure to do.
F 車室フロア
1 フロントサイドメンバ(サイドメンバ)
1a 延出部
2 フロントサスペンションクロスメンバ(クロスメンバ)
3 ロッカー
5 ブレース
51 屈曲部
52 基端
53 先端
6,6A ダンパー(緩衝部材)
7 リヤサイドメンバ(サイドメンバ)
7a 延出部
8 リヤサスペンションクロスメンバ(クロスメンバ)
9 補助部材
F Car floor 1 Front side member (side member)
1a Extension part 2 Front suspension cross member (cross member)
3 Rocker 5 Brace 51 Bent part 52 Base 53 53 Tip 6, 6A Damper (buffer member)
7 Rear side member (side member)
7a Extension part 8 Rear suspension cross member (cross member)
9 Auxiliary members
Claims (8)
各ブレースを、その長手方向中間位置が緩やかな鈍角状に屈曲して上方へ向けて開き形状をなすほぼく字形に形成し、
各ブレースの基端を車室フロアの左右の両側縁に沿って設置されたロッカーに連結し、先端を上記クロスメンバの中央部に連結し、
上記ブレースの中間の屈曲部と、該屈曲部の上方の車体下部とを緩衝部材により上下方向に連結せしめたことを特徴とする車体下部の補強構造。 The left and right side positions on the lower side of the passenger compartment floor and the center part in the vehicle width direction of the cross member that is installed between the extension parts of the left and right side members that extend from the passenger compartment floor are substantially planar in a pair of left and right braces. In the reinforcement structure at the bottom of the car body connected in a V shape,
Each brace is formed into a generally square shape that is bent in a gentle obtuse angle at its longitudinal intermediate position and opens upward.
Connect the base end of each brace to the rocker installed along the left and right side edges of the passenger compartment floor, connect the tip to the center of the cross member,
A reinforcing structure for a lower part of a vehicle body, wherein a middle bent part of the brace and a lower part of the vehicle body above the bent part are connected in a vertical direction by a buffer member.
上記左右のロッカーの前端付近と、左右のフロントサイドメンバの車室フロアから前方へ延出する延出部間に架設されたフロントサスペンションクロスメンバの車幅方向中央部とを、上記ブレースで連結した車体下部の補強構造。 In the reinforcing structure for the lower part of the vehicle body according to claim 1,
The vicinity of the front ends of the left and right rockers and the central portion in the vehicle width direction of the front suspension cross member that is installed between the extending portions extending forward from the passenger compartment floor of the left and right front side members are connected by the brace. Reinforcement structure at the bottom of the car body.
上記左右のロッカーの後端付近と、左右のリヤサイドメンバの車室フロアから後方へ延出する延出部間に架設されたリヤサスペンションクロスメンバの車幅方向中央部とを、上記ブレースで連結した車体下部の補強構造。 In the reinforcing structure for the lower part of the vehicle body according to claim 1,
The brace connects the vicinity of the rear ends of the left and right rockers and the central portion in the vehicle width direction of the rear suspension cross member that extends between the extension portions extending rearward from the passenger compartment floor of the left and right rear members. Reinforcement structure at the bottom of the car body.
上記ブレースは屈曲部の屈曲角度を、150度から170度の範囲に設定した車体下部の補強構造。 The reinforcing structure for the lower part of the vehicle body according to claim 1,
The above brace is a reinforcement structure for the lower part of the vehicle body, with the bending angle of the bending part set in the range of 150 to 170 degrees.
上記緩衝部材を、上記ブレースの中間の屈曲部と車体下部との間に上下方向かつ傾斜状に架けわたし、該緩衝部材の傾斜姿勢とは反対向きの傾斜姿勢で上記屈曲部と車体下部とを上下方向かつ傾斜状に連結する補助部材を設けた車体下部の補強構造。 The reinforcing structure for the lower part of the vehicle body according to claim 1,
The cushioning member is mounted between the middle bent part of the brace and the lower part of the vehicle body in an up-down direction and in an inclined manner, and the bent part and the lower part of the vehicle body are connected in an inclined posture opposite to the inclined posture of the buffer member. A reinforcing structure for the lower part of the vehicle body provided with auxiliary members that are connected in an up-down direction and in an inclined manner.
上記緩衝部材を、車室フロアから延出する上記サイドメンバの延出部と上記ブレースの中間の屈曲部とを上下方向に傾斜姿勢で連結するように設け、
上記補助部材を、車室フロアの下面に沿う上記サイドメンバの基端部と上記ブレースの中間の屈曲部とを上下方向に傾斜姿勢で連結するように設けた車体下部の補強構造。 In the reinforcement structure of the lower part of the vehicle body according to claim 5,
The buffer member is provided so as to connect the extending portion of the side member extending from the passenger compartment floor and the intermediate bent portion of the brace in an inclined posture in the vertical direction,
A reinforcing structure for a lower part of a vehicle body, wherein the auxiliary member is provided so as to connect the base end portion of the side member along the lower surface of the passenger compartment floor and the intermediate bent portion of the brace in an inclined posture in the vertical direction.
上記緩衝部材と上記補助部材との間の開き角度を鈍角状に形成した車体下部の補強構造。 In the reinforcement structure of the lower part of the vehicle body according to claim 5 or 6,
A reinforcing structure for a lower part of a vehicle body, in which an opening angle between the buffer member and the auxiliary member is obtuse.
上記緩衝部材として、上記ブレースの屈曲部の上下方向の変位を抑制するように設けた液圧式ダンパー装置で構成した車体下部の補強構造。 The reinforcement structure for the lower part of the vehicle body according to claim 1,
A reinforcing structure for a lower part of a vehicle body constituted by a hydraulic damper device provided as the buffer member so as to suppress the vertical displacement of the bent portion of the brace.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007153741A JP2008195372A (en) | 2007-01-15 | 2007-06-11 | Reinforcing structure of vehicle body lower part |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007005286 | 2007-01-15 | ||
JP2007153741A JP2008195372A (en) | 2007-01-15 | 2007-06-11 | Reinforcing structure of vehicle body lower part |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2008195372A true JP2008195372A (en) | 2008-08-28 |
Family
ID=39754703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007153741A Pending JP2008195372A (en) | 2007-01-15 | 2007-06-11 | Reinforcing structure of vehicle body lower part |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2008195372A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015096352A (en) * | 2013-11-15 | 2015-05-21 | マツダ株式会社 | Rear part vehicle body structure of automobile |
JP2020050270A (en) * | 2018-09-28 | 2020-04-02 | 株式会社Subaru | Vehicle body front structure |
CN112339868A (en) * | 2019-08-06 | 2021-02-09 | 丰田车体株式会社 | Underfloor structure of vehicle |
-
2007
- 2007-06-11 JP JP2007153741A patent/JP2008195372A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015096352A (en) * | 2013-11-15 | 2015-05-21 | マツダ株式会社 | Rear part vehicle body structure of automobile |
JP2020050270A (en) * | 2018-09-28 | 2020-04-02 | 株式会社Subaru | Vehicle body front structure |
JP7178851B2 (en) | 2018-09-28 | 2022-11-28 | 株式会社Subaru | Body front structure |
CN112339868A (en) * | 2019-08-06 | 2021-02-09 | 丰田车体株式会社 | Underfloor structure of vehicle |
CN112339868B (en) * | 2019-08-06 | 2023-04-07 | 丰田车体株式会社 | Underfloor structure of vehicle |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102381360B (en) | Steering support member structure | |
WO2017065086A1 (en) | Structure for side part of body of vehicle | |
US7735909B2 (en) | Body reinforcement device for a vehicle | |
JP6195069B2 (en) | Mounting structure for vehicle suspension | |
JP4875508B2 (en) | Vehicle front structure | |
CN204432806U (en) | A kind of wide dumper side-mounted steering room back suspension combined type shock absorption device | |
US9216778B1 (en) | Cab suspension | |
JP2008195372A (en) | Reinforcing structure of vehicle body lower part | |
CN102923202B (en) | Suspension device for heavy-duty truck cab | |
JP2009018690A (en) | Structure for reinforcing lower part of vehicle body | |
JP6048682B2 (en) | Front body structure of the vehicle | |
JP4525245B2 (en) | Rear body structure of automobile | |
JP2008536751A (en) | Frame structure for receiving the cab of a pivotally mounted truck | |
JP2004099013A (en) | Shock absorption structure of body frame of saddle type vehicle | |
JP2009101825A (en) | Reinforcing structure of vehicle body lower part | |
KR101349536B1 (en) | Cab Mounting Apparatus | |
JP5872961B2 (en) | Auto body front structure | |
KR102429001B1 (en) | Sub frame reinforcing unit for vehicle | |
WO2019111991A1 (en) | Suspension device | |
US8348335B2 (en) | Convertible vehicle | |
KR100633325B1 (en) | Reinforced cabin mounting structure for truck | |
KR101261951B1 (en) | Frame reinforcement unit for vehicle | |
JP4258446B2 (en) | Wheel support structure | |
JPH10292434A (en) | Work machine with driver's cab | |
KR101202463B1 (en) | Seat apparatus for farm machine |