JP7102089B2 - Front structure of cab over car - Google Patents

Front structure of cab over car Download PDF

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JP7102089B2
JP7102089B2 JP2020052160A JP2020052160A JP7102089B2 JP 7102089 B2 JP7102089 B2 JP 7102089B2 JP 2020052160 A JP2020052160 A JP 2020052160A JP 2020052160 A JP2020052160 A JP 2020052160A JP 7102089 B2 JP7102089 B2 JP 7102089B2
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vehicle
seat
driver
floor tunnel
reinforcing member
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JP2021151798A (en
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保和 福田
淳志 百中
陽史 岡田
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Daihatsu Motor Co Ltd
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Description

本発明は、キャブオーバ車の前部構造に関する。 The present invention relates to a front structure of a cab-over vehicle.

ここで、本発明でいう「キャブオーバ車」とは、エンジンなどのパワープラントをフロントフロア部の下側に配置し、かつその上に座席を設けたタイプの車両の意であり、いわゆるフルキャブオーバ車、セミキャブオーバ車の双方を含む。 Here, the "cab-over vehicle" in the present invention means a type of vehicle in which a power plant such as an engine is arranged under the front floor portion and a seat is provided on the power plant, and is a so-called full cab-over vehicle. , Both semi-cab over vehicles are included.

自動車などの車両においては、車両の前突が発生した際に、車室の前側に位置するダッシュパネルが後退するように変形し、車室内に大きく進入しないように構成することが望まれる。そのための手段として、たとえば特許文献１，２に記載されているように、フロントフロア部に設けられているフロアトンネル部を、補強部材を用いて補強し、かつこの補強部材の前端を、ダッシュパネルに設けられているクロス部材と直接または間接的に連結する手段がある。 In a vehicle such as an automobile, it is desired that the dash panel located on the front side of the passenger compartment is deformed so as to retract when a frontal collision of the vehicle occurs so as not to enter the passenger compartment significantly. As a means for that purpose, for example, as described in Patent Documents 1 and 2, the floor tunnel portion provided in the front floor portion is reinforced by using a reinforcing member, and the front end of the reinforcing member is a dash panel. There is a means for directly or indirectly connecting to the cross member provided in the.

一方、車両としては、既述したキャブオーバ車があるが、このキャブオーバ車においては、車両の前端部と車室との距離が短い。このため、車両の前突、とくにオフセット衝突が発生した場合のように、運転席側に大きな衝突荷重が作用した場合、他の種類の車両と比較して、ダッシュパネルが車室内に大きく進入し易い。これに対し、特許文献１，２に記載されたような手段は、補強部材を利用して車室を頑強にし、衝突荷重の入力に起因して車室の変形を生じ難くしようとするものであるため、このような手段を単に採用しただけでは、補強部材の厚みやサイズをかなり大きくする必要が生じる。また、補強部材の数を多くする必要も生じる。これでは、車両の重量の増加、生産性の悪化、および製造コストの上昇などを招く。 On the other hand, as a vehicle, there is a cab-over vehicle described above, but in this cab-over vehicle, the distance between the front end portion of the vehicle and the passenger compartment is short. For this reason, when a large collision load is applied to the driver's seat side, such as when a frontal collision of a vehicle occurs, especially an offset collision, the dash panel enters the vehicle interior more than other types of vehicles. easy. On the other hand, the means described in Patent Documents 1 and 2 are intended to make the vehicle interior robust by using a reinforcing member and to make it difficult for the vehicle interior to be deformed due to the input of the collision load. Therefore, if such means are simply adopted, it becomes necessary to considerably increase the thickness and size of the reinforcing member. It is also necessary to increase the number of reinforcing members. This leads to an increase in vehicle weight, a decrease in productivity, and an increase in manufacturing cost.

特開２００３－１４６２５０号公報Japanese Unexamined Patent Publication No. 2003-146250 特開２０１５－１３６９８８号公報Japanese Unexamined Patent Publication No. 2015-136988

本発明は、前記したような事情のもとで考え出されたものであり、運転席に車両前方側から大きな荷重が入力した際に、ダッシュパネルが車室内に進入することを、簡易な手段によって効果的に防止または抑制することが可能なキャブオーバ車の前部構造を提供することを、その課題としている。 The present invention has been conceived under the above-mentioned circumstances, and is a simple means for the dash panel to enter the vehicle interior when a large load is input to the driver's seat from the front side of the vehicle. It is an object of the present invention to provide a front structure of a cab-over vehicle that can be effectively prevented or suppressed by the vehicle.

上記の課題を解決するため、本発明では、次の技術的手段を講じている。 In order to solve the above problems, the following technical measures are taken in the present invention.

本発明により提供されるキャブオーバ車の前部構造は、運転席および助手席用のシートライザが設けられたキャブオーバ車の車室のフロントフロア部と、このフロントフロア部の車幅方向中央寄り領域に設けられ、かつ前記車室の前側隔壁部としてのダッシュパネルの下部から前記シートライザに向かうように車両前後方向に延びるフロアトンネル部と、このフロアトンネル部を補強するための補強部材と、を備えている、キャブオーバ車の前部構造であって、前記補強部材として、前記フロアトンネル部の運転席側の上部稜線部に接合され、かつこの上部稜線部を補強するフロアトンネル運転席側用の補強部材を、備えており、前記フロアトンネル部は、前記キャブオーバ車の車幅方向中央よりも助手席寄りに偏った配置に設けられ、前記フロアトンネル運転席側用の補強部材は、前記車幅方向中央またはその近傍に位置しており、前記フロアトンネル部の運転席寄り領域は、助手席寄り領域よりも車両前方側からの荷重入力に対する強度が高くされていることを特徴としている。 The front structure of the cab-over vehicle provided by the present invention is provided in the front floor portion of the passenger compartment of the cab-over vehicle provided with seat risers for the driver's seat and the passenger seat, and the front floor portion in a region closer to the center in the vehicle width direction. It is provided with a floor tunnel portion extending in the front-rear direction of the vehicle from the lower part of the dash panel as the front partition portion of the passenger compartment toward the seat riser, and a reinforcing member for reinforcing the floor tunnel portion. The front structure of the cab-over vehicle, which is joined to the upper ridgeline portion of the floor tunnel portion on the driver's seat side as the reinforcing member, and is reinforced for the driver's seat side of the floor tunnel to reinforce the upper ridgeline portion. The floor tunnel portion is provided so as to be biased toward the passenger seat from the center of the cab-over vehicle in the vehicle width direction, and the reinforcing member for the floor tunnel driver's seat side is provided in the vehicle width direction. It is located in the center or in the vicinity thereof, and the area near the driver's seat of the floor tunnel portion is characterized in that the strength against a load input from the front side of the vehicle is higher than that of the area near the passenger's seat.

このような構成によれば、次のような効果が得られる。
車両（キャブオーバ車）の前突として、オフセット衝突が発生した場合、車両前方側から作用する衝突荷重の一部は、衝突初期において、フロアトンネル部および補強部材（フロアトンネル運転席側用の補強部材）によって受けられる。ここで、衝突の中・後期においては、フロアトンネル部および前記補強部材は、前記衝突荷重に起因して車両前後方向に圧縮変形するが、フロアトンネル部の運転席寄り領域は、助手席寄り領域よりも強度が高いため、フロアトンネル部は、運転席寄り領域よりも助手席寄り領域の方が、より圧縮するような変形を生じる。この変形は、ダッシュパネルの運転席側よりも助手席側の方が大きく後退するように回転させる回転モーメントを生じさせ、運転席に向かう衝突荷重を運転席側から助手席側に逸らせることが可能となる。その結果、車両のオフセット衝突が発生した際に、ダッシュパネルの運転席側が車室内に大きく進入しないようにすることができる。一方、運転席側から助手席側に逸らせた荷重は、さほど大きくはなく、適当な車体構成部材によって受けることができるため、ダッシュパネルの助手席側が車室内に大きく進入することも適切に解消することが可能である。
このようなことにより、本発明によれば、補強部材の厚肉化やサイズの大型化などを適切に抑制することが可能となり、キャブオーバ車の軽量化、生産性の向上、および製造コストの低減などを好適に図ることができる。 According to such a configuration, the following effects can be obtained.
When an offset collision occurs as a front collision of a vehicle (cab-over vehicle), a part of the collision load acting from the front side of the vehicle is a part of the floor tunnel portion and the reinforcing member (reinforcing member for the floor tunnel driver's seat side) at the initial stage of the collision. ). Here, in the middle and late stages of the collision, the floor tunnel portion and the reinforcing member are compressed and deformed in the front-rear direction of the vehicle due to the collision load, but the region near the driver's seat of the floor tunnel portion is the region near the passenger seat. Since the strength is higher than that of the above, the floor tunnel portion is deformed so as to be more compressed in the area closer to the passenger seat than in the area closer to the driver's seat. This deformation causes a rotational moment that rotates the dash panel so that the passenger side is more retracted than the driver side, and the collision load toward the driver seat can be deflected from the driver seat side to the passenger seat side. It will be possible. As a result, when an offset collision of the vehicle occurs, the driver's seat side of the dash panel can be prevented from entering the vehicle interior significantly. On the other hand, the load diverted from the driver's seat side to the passenger's seat side is not so large and can be received by an appropriate vehicle body component, so that the passenger's seat side of the dash panel does not enter the vehicle interior significantly. It is possible to do.
As a result, according to the present invention, it is possible to appropriately suppress the increase in thickness and size of the reinforcing member, and the weight of the cab-over vehicle is reduced, the productivity is improved, and the manufacturing cost is reduced. Etc. can be preferably planned.

さらに、前記構成によれば、車両のオフセット衝突などの前突が発生した場合に、衝突荷重を、車幅方向中央またはその近傍に位置するフロアトンネル運転席側用の補強部材によって効果的に受け止めることが可能となる。また、その後は前述した回転モーメントをより適切に生じさせ得ることとなる。運転席の足元スペースを大きくすることもできる。 Further, according to the above configuration, when a front collision such as an offset collision of a vehicle occurs, the collision load is effectively received by a reinforcing member for the driver's seat side of the floor tunnel located at the center or the vicinity thereof in the vehicle width direction. It becomes possible. Further, after that, the above-mentioned rotational moment can be generated more appropriately. It is also possible to increase the foot space of the driver's seat.

本発明のその他の特徴および利点は、添付図面を参照して以下に行なう発明の実施の形態の説明から、より明らかになるであろう。 Other features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings.

本発明に係るキャブオーバ車の前部構造の一例を示す要部概略側面図である。It is a schematic side view of the main part which shows an example of the front structure of the cab-over vehicle which concerns on this invention. 図１に示した構造の要部概略斜視図である。It is a schematic perspective view of the main part of the structure shown in FIG. 図１および図２に示した構造の要部概略平面図である。It is a schematic plan view of the main part of the structure shown in FIGS. 1 and 2. 図３のIV－IV断面図である。FIG. 3 is a sectional view taken along line IV-IV of FIG. 図２のＶ－Ｖ断面図である。FIG. 2 is a sectional view taken along line VV of FIG. 図１ないし図３に示された構造の作用を簡略化して示した説明図である。It is explanatory drawing which showed the operation of the structure shown in FIGS. 1 to 3 in a simplified manner.

以下、本発明の好ましい実施の形態について、図面を参照して具体的に説明する。 Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

図１～図３に示すキャブオーバ車の前部構造Ａは、キャブオーバ車としての車両１に適用されており、車室１０内のフロントフロア部２には、いわゆる床下搭載のパワープラント８（図１のみに記載）の上側に位置するパワープラント用の開口部２１を形成するシートライザ３が設けられている。このシートライザ３の上側には、運転席４Ａおよび助手席４Ｂが横並び状態で設けられている。 The front structure A of the cab-over vehicle shown in FIGS. 1 to 3 is applied to the vehicle 1 as a cab-over vehicle, and the front floor portion 2 in the passenger compartment 10 is a so-called underfloor mounted power plant 8 (FIG. 1). A seat riser 3 is provided to form an opening 21 for a power plant located above (described only). A driver's seat 4A and a passenger's seat 4B are provided side by side on the upper side of the seat riser 3.

このキャブオーバ車の前部構造Ａは、前記したフロントフロア部２に加え、このフロントフロア部２に設けられたフロアトンネル部５、フロアトンネル運転席側用の補強部材６、ダッシュパネル７、ダッシュパネル補強用の縦リインフォース８０ならびにクロスメンバ８１、およびフロントフロア部２の上面部に接合された左右一対のフロア補強用アッパメンバ８２ａ，８２ｂを備えている。 In addition to the front floor portion 2, the front structure A of the cab-over vehicle includes a floor tunnel portion 5 provided in the front floor portion 2, a reinforcing member 6 for the floor tunnel driver's seat side, a dash panel 7, and a dash panel. It includes a vertical reinforcement 80 for reinforcement, a cross member 81, and a pair of left and right upper members 82a and 82b for reinforcing the floor, which are joined to the upper surface of the front floor portion 2.

ダッシュパネル７は、車室１０の前側隔壁部として機能するパネルであり、その上端部は、車幅方向に延びるカウル９０（図２を参照）に接合されている。このダッシュパネル７の下部には、フロントフロアパネル２０の前端部が接合されており、これらダッシュパネル７の下部周辺部とフロントフロアパネル２０とを利用してフロントフロア部２が構成されている。 The dash panel 7 is a panel that functions as a front partition portion of the vehicle interior 10, and an upper end portion thereof is joined to a cowl 90 (see FIG. 2) extending in the vehicle width direction. The front end portion of the front floor panel 20 is joined to the lower portion of the dash panel 7, and the front floor portion 2 is configured by using the lower peripheral portion of the dash panel 7 and the front floor panel 20.

フロントフロア部２の下面側には、図３および図４に示すように、左右一対のフロントサイドメンバ９１が接合されている。これら一対のフロントサイドメンバ９１は、互いに車幅方向に間隔を隔てて車両前後方向に延びる車体骨格構成部材であり、ダッシュパネル７よりも車両前方側の位置からパワープラント用の開口部２１を通過してさらに車両後方側に延びている。左右一対のフロア補強用アッパメンバ８２ａ，８２ｂは、これらと前記した一対のフロントサイドメンバ９１との相互間に、フロントフロアパネル２０を挟み込むようにして、これらにスポット溶接などを用いて接合されており、車両前後方向に延びている。 As shown in FIGS. 3 and 4, a pair of left and right front side members 91 are joined to the lower surface side of the front floor portion 2. These pair of front side members 91 are vehicle body skeleton components extending in the vehicle front-rear direction with a distance from each other in the vehicle width direction, and pass through the opening 21 for the power plant from a position on the vehicle front side of the dash panel 7. Then, it extends further to the rear side of the vehicle. The pair of left and right floor reinforcing upper members 82a and 82b are joined to each other by using spot welding or the like so as to sandwich the front floor panel 20 between them and the pair of front side members 91 described above. , Extends in the front-rear direction of the vehicle.

ダッシュパネル補強用の縦リインフォース８０ならびにクロスメンバ８１は、ともにダッシュパネル７の運転席４Ａ側の領域を効率よく補強するための部材であって、ダッシュパネル７にスポット溶接などの手段を用いて接合されている。より詳しくは、縦リインフォース８０は、運転席４Ａ側のアッパメンバ８２ａの前端または前端に近接した位置から上方に起立するようにしてダッシュパネル７の車室１０内側を向く片面に接合されている。クロスメンバ８１は、ダッシュパネル７の上下高さ方向途中箇所に位置して車幅方向に延びるように、ダッシュパネル７の車両前方側を向く片面に接合されている。図５に示すように、クロスメンバ８１は、たとえば比較的扁平な断面略ハット状である。縦リインフォース８０の断面形状も、たとえばクロスメンバ８１と同様な形状である。 The vertical reinforcement 80 and the cross member 81 for reinforcing the dash panel are both members for efficiently reinforcing the area of the dash panel 7 on the driver's seat 4A side, and are joined to the dash panel 7 by means such as spot welding. Has been done. More specifically, the vertical reinforcement 80 is joined to one side of the dash panel 7 facing the inside of the passenger compartment 10 so as to stand upward from a position close to the front end or the front end of the upper member 82a on the driver's seat 4A side. The cross member 81 is joined to one side of the dash panel 7 facing the vehicle front side so as to be located in the middle of the dash panel 7 in the vertical height direction and extend in the vehicle width direction. As shown in FIG. 5, the cross member 81 has, for example, a relatively flat cross-section substantially hat shape. The cross-sectional shape of the vertical reinforcement 80 is also the same as that of the cross member 81, for example.

フロアトンネル部５は、ダッシュパネル７の下部から車両後方側に一連に延び、後端部がシートライザ３に繋がるように設けられており、たとえば図４によく表れているように、フロントフロア部２の他の一般部分から上方に起立した左右一対の起立壁部５０と、これらの上端部どうしを繋ぐ上壁部５１とを有している。図１～図３に示すように、このフロアトンネル部５の前部には、ダッシュパネル７との接続部近辺を補強するための補強部材５９が接合されている。 The floor tunnel portion 5 extends from the lower part of the dash panel 7 to the rear side of the vehicle in a series, and is provided so that the rear end portion is connected to the seat riser 3. For example, as is often shown in FIG. 4, the floor tunnel portion 5 is provided as a front floor portion. It has a pair of left and right standing wall portions 50 that stand upward from the other general portions of 2, and an upper wall portion 51 that connects these upper end portions. As shown in FIGS. 1 to 3, a reinforcing member 59 for reinforcing the vicinity of the connection portion with the dash panel 7 is joined to the front portion of the floor tunnel portion 5.

補強部材６（図２および図３の網点模様部分）は、フロアトンネル部５のうち、運転席寄り領域Ｓａの強度を、助手席寄り領域Ｓｂの強度よりも高くするための部材である。この補強部材６は、図４によく表れているように、フロアトンネル部５の一対の上部稜線部Ｒａ，Ｒｂのうち、運転席側の上部稜線部Ｒａ、およびその周辺部である上壁部５１の一部ならびに側壁部５０の一部に重ねられ、かつこれらの部分にスポット溶接などの手段を用いて接合されている。なお、上部稜線部Ｒａ，Ｒｂは、側壁部５０と上壁部５１とが交差して繋がった部分である。
補強部材６は、断面ヘ字状またはこれに類する形状であって、上部稜線部Ｒａに沿って車両前後方向に延びており、たとえばフロアトンネル部５の長手方向の略全長域にわたって設けられている。ただし、本発明はこれに限定されない。たとえば図２に示すように、他の補強部材５９の車両後方側に位置する構成とすることができる。
補強部材６の前端は、クロスメンバ８１に接近しているものの、離間した配置にあり、これらは直接連結された構成とはされていない。 The reinforcing member 6 (halftone dot pattern portion in FIGS. 2 and 3) is a member of the floor tunnel portion 5 for increasing the strength of the driver's seat side region Sa to be higher than the strength of the passenger seat side region Sb. As is clearly shown in FIG. 4, the reinforcing member 6 is the upper ridge line portion Ra on the driver's seat side and the upper wall portion which is a peripheral portion thereof among the pair of upper ridge line portions Ra and Rb of the floor tunnel portion 5. It is overlapped with a part of 51 and a part of the side wall portion 50, and is joined to these portions by means such as spot welding. The upper ridge line portions Ra and Rb are portions where the side wall portion 50 and the upper wall portion 51 intersect and are connected.
The reinforcing member 6 has a cross-sectional F-shaped or similar shape, extends in the vehicle front-rear direction along the upper ridge line portion Ra, and is provided, for example, over a substantially overall length of the floor tunnel portion 5 in the longitudinal direction. .. However, the present invention is not limited to this. For example, as shown in FIG. 2, the other reinforcing member 59 may be located on the rear side of the vehicle.
Although the front ends of the reinforcing member 6 are close to the cross member 81, they are arranged apart from each other, and they are not directly connected to each other.

一方、助手席側の上部稜線部Ｒｂおよびその周辺部には、前記した補強部材６に相当する補強部材は設けられていない。このことにより、フロアトンネル部５の運転席寄り領域Ｓａは、助手席寄り領域Ｓｂよりも剛性が高く、車両前方側からの荷重入力に対する強度が高くなっている。
フロアトンネル部５は、車両１の車幅方向中央寄りに位置しているものの、車両１の車幅方向中央（中心線ＣＬ）に対して、助手席４Ｂ寄りに適当な寸法Ｌａだけ偏った配置に設けられている。このことにより、補強部材６は、車幅方向中央またはその近傍に位置している。 On the other hand, the upper ridge line portion Rb on the passenger seat side and the peripheral portion thereof are not provided with the reinforcing member corresponding to the reinforcing member 6 described above. As a result, the driver's seat side area Sa of the floor tunnel portion 5 has higher rigidity than the passenger seat side area Sb, and the strength against the load input from the front side of the vehicle is higher.
Although the floor tunnel portion 5 is located closer to the center of the vehicle 1 in the vehicle width direction, the floor tunnel portion 5 is arranged so as to be biased toward the center of the vehicle 1 in the vehicle width direction (center line CL) by an appropriate dimension La toward the passenger seat 4B. It is provided in. As a result, the reinforcing member 6 is located at or near the center in the vehicle width direction.

シートライザ３には、その前後両壁部を橋渡し接続するブレース３０が設けられている。このブレース３０と補強部材６とは、平面視において、車両前後方向に略直線状に並ぶように設定されている。このような構成は、補強部材６に対してその車両前方側から荷重入力があった場合に、この荷重の一部をブレース３０に負担させるのに役立つ。 The seat rider 3 is provided with a brace 30 for bridging and connecting both front and rear wall portions. The brace 30 and the reinforcing member 6 are set so as to be arranged substantially in a straight line in the front-rear direction of the vehicle in a plan view. Such a configuration is useful for causing the brace 30 to bear a part of the load when a load is input to the reinforcing member 6 from the front side of the vehicle.

次に、前記したキャブオーバ車の前部構造Ａの作用について説明する。 Next, the operation of the front structure A of the cab-over vehicle described above will be described.

車両１にオフセット衝突が発生し、たとえば図３に示すような衝突荷重Ｆが車両１の前部に対し、その車両前方側から入力した場合、フロアトンネル部５および補強部材６は、次のような作用を生じさせる。 When an offset collision occurs in the vehicle 1, for example, when a collision load F as shown in FIG. 3 is input to the front portion of the vehicle 1 from the front side of the vehicle, the floor tunnel portion 5 and the reinforcing member 6 are as follows. Causes an action.

すなわち、衝突初期においては、衝突荷重Ｆのうち、車幅方向中央寄り領域に作用する一部の衝突荷重Ｆ１が、フロアトンネル部５および補強部材６によって受け止められる。補強部材６は、車幅方向中央またはその近傍に位置するため、衝突荷重Ｆ１を効果的に受け止めることができ、フロアトンネル部５が大きく圧縮変形することは阻止される。次いで、衝突中・後期においては、図６に模式的に示すように、フロアトンネル部５が車両前後方向に圧縮変形する。ここで、フロアトンネル部５の運転席寄り領域Ｓａは、補強部材６により補強され、高強度であるのに対し、助手席寄り領域Ｓｂは、低強度であるため、運転席寄り領域Ｓａよりも助手席寄り領域Ｓｂの方が大きく圧縮変形するように、フロアトンネル部５は偏って圧縮変形する。 That is, at the initial stage of the collision, a part of the collision load F1 acting on the region closer to the center in the vehicle width direction is received by the floor tunnel portion 5 and the reinforcing member 6. Since the reinforcing member 6 is located at or near the center in the vehicle width direction, the collision load F1 can be effectively received, and the floor tunnel portion 5 is prevented from being significantly compressed and deformed. Next, during the middle and late stages of the collision, the floor tunnel portion 5 is compressed and deformed in the front-rear direction of the vehicle, as schematically shown in FIG. Here, the driver's seat side area Sa of the floor tunnel portion 5 is reinforced by the reinforcing member 6 and has high strength, whereas the passenger's seat side area Sb has low strength, and therefore is higher than the driver's seat side area Sa. The floor tunnel portion 5 is biased and deformed so that the area Sb closer to the passenger seat is compressed and deformed more.

前記した態様の圧縮変形は、ダッシュパネル７の運転席側領域よりも助手席側領域の方を大きく後退させる回転モーメントＭを生じさせる。このことにより、運転席に向かう衝突荷重Ｆの一部を運転席側から助手席側に逸らせることができ、衝突荷重Ｆが、運転席側に集中して作用することは適切に緩和される。したがって、ダッシュパネル７の運転席側領域が、車室１０内に大きく進入することは適切に防止される。衝突荷重Ｆ１のうち、助手席側に逸らされた荷重（回転モーメントＭ）については、たとえば助手席側のフロントサイドメンバ９１などに適切に受けさせることが可能であり、ダッシュパネル７の助手席側領域が、車室１０内に大きく進入することも適切に防止される。 The compression deformation of the above-described embodiment causes a rotational moment M that causes the passenger seat side region to retreat more than the driver seat side region of the dash panel 7. As a result, a part of the collision load F toward the driver's seat can be deflected from the driver's seat side to the passenger's seat side, and the collision load F concentrated on the driver's seat side is appropriately alleviated. .. Therefore, it is appropriately prevented that the driver's seat side region of the dash panel 7 greatly enters the vehicle interior 10. Of the collision load F1, the load (rotational moment M) deflected to the passenger side can be appropriately received by, for example, the front side member 91 on the passenger side, and the passenger side of the dash panel 7 can be appropriately received. It is also appropriately prevented that the area greatly enters the passenger compartment 10.

クロスメンバ８１、および縦リインフォース８０は、ダッシュパネル７の運転席側領域に接合されており、この領域の剛性を効果的に高めている。したがって、車両１のオフセット衝突時において、ダッシュパネル７の運転席側領域が車室１０内に大きく進入することは、より徹底して防止される。とくに、本実施形態においては、運転席４Ａに着座する運転者の足元周辺部を、フロアトンネル部５、補強部材６、クロスメンバ８１、縦リインフォース８０、およびアッパメンバ８２ａにより、平面視において囲んだ構成としているため、運転者保護性能に一層優れたものとすることができる。
なお、本実施形態とは異なり、補強部材６の前部がクロスメンバ８１に直接連結されて
いる場合には、前記した回転モーメントＭを発生させるフロアトンネル部５の変形が生じ難くなる虞があるが、本実施形態においては、そのような虞もない。 The cross member 81 and the vertical reinforcement 80 are joined to the driver's seat side region of the dash panel 7, and the rigidity of this region is effectively increased. Therefore, in the case of an offset collision of the vehicle 1, it is more thoroughly prevented that the driver's seat side region of the dash panel 7 enters the vehicle interior 10 significantly. In particular, in the present embodiment, the peripheral portion of the driver's feet seated in the driver's seat 4A is surrounded by the floor tunnel portion 5, the reinforcing member 6, the cross member 81, the vertical reinforcement 80, and the upper member 82a in a plan view. Therefore, the driver protection performance can be further improved.
Unlike the present embodiment, when the front portion of the reinforcing member 6 is directly connected to the cross member 81, the floor tunnel portion 5 that generates the rotational moment M may not be easily deformed. However, in this embodiment, there is no such risk.

本実施形態によれば、フロアトンネル部５の一方の上部稜線部Ｒａのみに補強部材６を設けており、他方の上部稜線部Ｒｂには補強部材６に相当する部材を設けていない。また、既述したように、運転席側に作用する衝突荷重を助手席側に逸らせているため、クロスメンバ８１や縦リインフォース８０などの厚肉化や大型化を抑制することが可能である。したがって、車両１の軽量化、生産性の向上、および製造コストの低減化を適切に図ることができる。 According to the present embodiment, the reinforcing member 6 is provided only on one upper ridge line portion Ra of the floor tunnel portion 5, and the other upper ridge line portion Rb is not provided with a member corresponding to the reinforcing member 6. Further, as described above, since the collision load acting on the driver's seat side is deflected to the passenger's seat side, it is possible to suppress the increase in thickness and size of the cross member 81 and the vertical reinforcement 80. .. Therefore, the weight of the vehicle 1 can be reduced, the productivity can be improved, and the manufacturing cost can be appropriately reduced.

本発明は、上述した実施形態の内容に限定されない。本発明に係るキャブオーバ車の前部構造の各部の具体的な構成は、本発明の意図する範囲内において種々に設計変更自在である。 The present invention is not limited to the contents of the above-described embodiments. The specific configuration of each part of the front structure of the cab-over vehicle according to the present invention can be variously redesigned within the scope intended by the present invention.

上述の実施形態においては、フロアトンネル運転席側用の補強部材６が、フロアトンネル部５の外面側（上面側）に設けられているが、これに代えて、または加えて、フロアトンネル部５の内側（下面側）に設けた構成とすることもできる。 In the above-described embodiment, the reinforcing member 6 for the driver's seat side of the floor tunnel is provided on the outer surface side (upper surface side) of the floor tunnel portion 5, but instead of or in addition to this, the floor tunnel portion 5 It is also possible to have a configuration provided inside (lower surface side) of the tunnel.

また、上述の実施形態においては、フロアトンネル部５の助手席側の上部稜線部Ｒｂに、補強部材６に相当する補強部材は設けられていないが、本発明はこれに限定されず、あえて上部稜線部Ｒｂに補強部材（補強部材６よりも強度が低い補強部材）を設けた構成としてもよい。本発明においては、フロアトンネル部５の運転席側の上部稜線部Ｒａを補強する補強部材６が設けられていることにより、フロアトンネル部５の運転席寄り領域Ｓａは、助手席寄り領域Ｓｂよりも車両前方側からの荷重入力に対する強度が高い構成とされていればよい。 Further, in the above-described embodiment, the upper ridgeline portion Rb on the passenger side of the floor tunnel portion 5 is not provided with the reinforcing member corresponding to the reinforcing member 6, but the present invention is not limited to this, and the upper portion is intentionally used. A reinforcing member (a reinforcing member having a strength lower than that of the reinforcing member 6) may be provided on the ridge line portion Rb. In the present invention, since the reinforcing member 6 for reinforcing the upper ridge line portion Ra on the driver's seat side of the floor tunnel portion 5 is provided, the driver's seat side area Sa of the floor tunnel part 5 is more than the passenger's seat side area Sb. However, it is sufficient that the structure has high strength against the load input from the front side of the vehicle.

Ａ キャブオーバ車の前部構造
Ｒａ 上部稜線部（運転席側の）
Ｓａ 運転席寄り領域（フロアトンネル部の）
Ｓｂ 助手席寄り領域（フロアトンネル部の）
１ 車両
１０ 車室
２ フロントフロア部
３ シートライザ
５ フロアトンネル部
６ 補強部材（フロアトンネル運転席側用の補強部材）
７ ダッシュパネル A Front structure of cab-over vehicle Ra Upper ridgeline (on the driver's side)
Sa area near the driver's seat (of the floor tunnel)
Sb Passenger seat area (of the floor tunnel)
1 Vehicle 10 Vehicle interior 2 Front floor 3 Seat riser 5 Floor tunnel 6 Reinforcing member (Reinforcing member for floor tunnel driver's seat side)
7 Dash panel

Claims (1)

運転席および助手席用のシートライザが設けられたキャブオーバ車の車室のフロントフロア部と、
このフロントフロア部の車幅方向中央寄り領域に設けられ、かつ前記車室の前側隔壁部としてのダッシュパネルの下部から前記シートライザに向かうように車両前後方向に延びるフロアトンネル部と、
このフロアトンネル部を補強するための補強部材と、
を備えている、キャブオーバ車の前部構造であって、
前記補強部材として、前記フロアトンネル部の運転席側の上部稜線部に接合され、かつこの上部稜線部を補強するフロアトンネル運転席側用の補強部材を、備えており、
前記フロアトンネル部は、前記キャブオーバ車の車幅方向中央よりも助手席寄りに偏った配置に設けられ、
前記フロアトンネル運転席側用の補強部材は、前記車幅方向中央またはその近傍に位置しており、
前記フロアトンネル部の運転席寄り領域は、助手席寄り領域よりも車両前方側からの荷重入力に対する強度が高くされていることを特徴とする、キャブオーバ車の前部構造。 The front floor of the cabin of a cab-over vehicle with seat risers for the driver and passenger seats,
A floor tunnel portion provided in a region closer to the center of the front floor portion in the vehicle width direction and extending in the vehicle front-rear direction from the lower part of the dash panel as the front partition portion of the vehicle interior toward the seat riser.
Reinforcing members to reinforce this floor tunnel and
The front structure of the cab-over vehicle, which is equipped with
As the reinforcing member, a reinforcing member for the driver's seat side of the floor tunnel, which is joined to the upper ridgeline portion of the floor tunnel portion on the driver's seat side and reinforces the upper ridgeline portion, is provided.
The floor tunnel portion is provided in an arrangement that is biased toward the passenger seat with respect to the center of the cab-over vehicle in the vehicle width direction.
The reinforcing member for the driver's seat side of the floor tunnel is located at or near the center in the vehicle width direction.
The front structure of the cab-over vehicle is characterized in that the area near the driver's seat of the floor tunnel portion has higher strength against load input from the front side of the vehicle than the area near the passenger's seat.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001039345A (en) 1999-07-27 2001-02-13 Nissan Diesel Motor Co Ltd Cab structure
JP2006069511A (en) 2004-09-03 2006-03-16 Nissan Motor Light Truck Co Ltd Reinforcing member-attaching structure for ensuring living space at the time of collision
JP2015193342A (en) 2014-03-31 2015-11-05 ダイハツ工業株式会社 Vehicle floor structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63104179U (en) * 1986-12-25 1988-07-06
JPH0853073A (en) * 1994-08-12 1996-02-27 Daihatsu Motor Co Ltd Floor structure of automobile

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001039345A (en) 1999-07-27 2001-02-13 Nissan Diesel Motor Co Ltd Cab structure
JP2006069511A (en) 2004-09-03 2006-03-16 Nissan Motor Light Truck Co Ltd Reinforcing member-attaching structure for ensuring living space at the time of collision
JP2015193342A (en) 2014-03-31 2015-11-05 ダイハツ工業株式会社 Vehicle floor structure

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