JP2008126792A - Cowl cover - Google Patents

Cowl cover Download PDF

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Publication number
JP2008126792A
JP2008126792A JP2006312658A JP2006312658A JP2008126792A JP 2008126792 A JP2008126792 A JP 2008126792A JP 2006312658 A JP2006312658 A JP 2006312658A JP 2006312658 A JP2006312658 A JP 2006312658A JP 2008126792 A JP2008126792 A JP 2008126792A
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Japan
Prior art keywords
cover
reinforcing bar
reaction force
cowl
vehicle
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JP2006312658A
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Inventor
Susumu Suzuki
晋 鈴木
Nobuhiro Iwai
信弘 岩井
Takeshi Kasezawa
健 加瀬沢
Alvarez Victor
アルバレス ビクトル
Salgado Ivan
サルガド イワン
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Nissan Motor Co Ltd
日産自動車株式会社
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Application filed by Nissan Motor Co Ltd, 日産自動車株式会社 filed Critical Nissan Motor Co Ltd
Priority to JP2006312658A priority Critical patent/JP2008126792A/en
Publication of JP2008126792A publication Critical patent/JP2008126792A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To compatibly satisfy suppression of thermal deformation in the upper side section of a cover, and reduction in reaction force by the front side section of the cover when an impact load is input above the rear end of a hood. <P>SOLUTION: When thermal distortion occurs in the upper section 3 of the cover in a direction stretching toward the front of a vehicle and the rear wall section 2B of the front side section 2 of the cover receives pressure toward the front, the compressive reaction force of a reinforcement bar 11 suppresses the deflection deformation of the rear wall section 2B toward the front, and inhibits the thermal deformation of the upper wall section 3 of the cover. When the impact load F is input in the rear end of the hood 35 from above, and a deflection load is applied to the front wall section 2A of the front side section 2 of the cover, the reinforcement bar 11 allows the separation of the rear end from the rear wall section 2B relative to the tensile load in the longitudinal direction, and permits the deflection deformation of the front wall section 2A toward the front of the vehicle without generating the reaction force to thereby reduce the reaction force. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、自動車のカウルボックスの上方開口部分を覆うカウルカバーに関する。   The present invention relates to a cowl cover that covers an upper opening portion of a cowl box of an automobile.
従来のカウルカバーの中には、カバー前側部を前,後壁部と底壁部とで凹状に形成し、この底壁部をカウルフロントの上縁に固定して前側部の上端をフードの後端部下面に近接配置し、そして、このカバー前側部の凹状の内側、つまり、前壁部と底壁部と後壁部の各内側面に亘って複数個のリブ壁を一体に形成すると共に、該リブ壁と前壁部内面との接続部分を上方から作用する所要の荷重に対して破断可能な構造としたものが知られている(特許文献1参照)。
特開2005−289237号公報(第4頁、図3)
In the conventional cowl cover, the front side part of the cover is formed in a concave shape with the front, rear wall part and bottom wall part, and the bottom wall part is fixed to the upper edge of the cowl front and the upper end of the front side part is attached to the hood. A plurality of rib walls are integrally formed over the inner surface of the concave side of the front side portion of the cover, that is, the inner side surfaces of the front wall portion, the bottom wall portion, and the rear wall portion. In addition, there is known a structure in which the connecting portion between the rib wall and the inner surface of the front wall portion can be broken against a required load acting from above (see Patent Document 1).
Japanese Patent Laying-Open No. 2005-289237 (page 4, FIG. 3)
前記従来のカウルカバーは、フードの後端部に上方から所要の衝突荷重が作用して、該フードの後端部がカバー前側部における前壁部の上端に圧接し、該前壁部とリブ壁との接続部分に破断荷重として作用すると、該接続部分で前壁部がリブ壁から破断して車両前方へ倒れ変形し、続いてフード後端部がリブ壁に衝接して該リブ壁を破壊することによって緩衝機能を発揮させようとするものである。   In the conventional cowl cover, a required collision load acts on the rear end portion of the hood from above, and the rear end portion of the hood presses against the upper end of the front wall portion on the front side portion of the cover, and the front wall portion and the rib When acting as a breaking load on the connecting portion with the wall, the front wall portion breaks from the rib wall at the connecting portion and falls down to the front of the vehicle, and then the rear end of the hood abuts against the rib wall and It is intended to exert a buffer function by being destroyed.
従って、前壁部の破断挙動を確実に行わせ、かつ、リブ壁が破壊し易いようにして衝突物への反力を小さくするためには、該前壁部とリブ壁との接合強度を小さくし、かつ、リブ壁の剛性を低める必要がある。   Accordingly, in order to ensure the breaking behavior of the front wall portion and to make the rib wall easy to break and to reduce the reaction force to the collision object, the bonding strength between the front wall portion and the rib wall is set to be low. It is necessary to reduce the size and the rigidity of the rib wall.
しかし、この接合強度を小さくし、かつ、リブ壁の剛性を低めた場合には、カウルカバーのカバー前側部に連設されて、後端部がフロントウィンドシールドの下縁に固定されたカバー上側部が日射を受けて車両前方へ延伸する方向に熱歪が発生すると、カバー前側部の前壁部とリブ壁との接合部分が変形してリブ壁が車幅方向にずれたり、該リブ壁自体が変形して、カバー前側部の後壁部が車両前方へ押圧されて撓み変形し、カバー上側部が車両前方へ熱変形してしまう。   However, when this joint strength is reduced and the rigidity of the rib wall is reduced, the upper side of the cover is connected to the front side of the cover of the cowl cover and the rear end is fixed to the lower edge of the front windshield. If thermal distortion occurs in the direction in which the part is exposed to sunlight and extends forward, the joint portion between the front wall portion of the front side portion of the cover and the rib wall is deformed and the rib wall is displaced in the vehicle width direction. As a result, the rear wall portion of the cover front side portion is pressed forward and deformed by bending, and the cover upper portion portion is thermally deformed forward of the vehicle.
このため、車体のフロントウェスト部分の外観を損なってしまうばかりでなく、カバー上側部に配設されたウォッシャーノズルの噴射角度が変化する等の不具合を生じてしまう。   For this reason, not only the appearance of the front waist portion of the vehicle body is impaired, but also a problem such as a change in the injection angle of the washer nozzle disposed on the upper side of the cover occurs.
そこで、本発明は日射によるカバー上側部の熱変形を抑制できるとともに、フード後端部に上方より所要の衝突入力が作用した場合には、カバー前側部における前壁部の車両前方へ容易に撓み変形を可能として、エネルギー吸収効果を発揮できるカウルカバーを提供するものである。   Therefore, the present invention can suppress thermal deformation of the upper side portion of the cover due to solar radiation, and when a required collision input is applied to the rear end portion of the hood from above, the front wall portion of the front side portion of the cover is easily bent forward of the vehicle. The present invention provides a cowl cover that can be deformed and can exhibit an energy absorption effect.
本発明のカウルカバーにあっては、前,後壁部と底壁部とで凹状に形成されたカバー前側部と、該カバー前側部の後壁部に連設されたカバー上側部と、を備え、該カバー上側部の後端を車体に固定する一方、カバー前側部の底壁部を車体に固定して、前壁部の上端をフードの後端部下面に近接配置したカウルカバーにおいて、
前記カバー前側部の前壁部と後壁部とに跨って、前後方向の圧縮入力に対しては反力を発生し、前後方向の引張り入力に対しては反力を発生せずに前壁部の後壁部に対する拡開を許容する反力手段を設けたことを最も主要な特徴とする。
In the cowl cover of the present invention, the front side of the cover formed in a concave shape at the front and rear walls and the bottom wall, and the upper side of the cover connected to the rear wall of the front side of the cover, A cowl cover in which the upper end of the cover is fixed to the vehicle body, while the bottom wall portion of the front side portion of the cover is fixed to the vehicle body, and the upper end of the front wall portion is disposed close to the lower surface of the rear end portion of the hood.
A reaction force is generated for the compression input in the front-rear direction across the front wall portion and the rear wall portion of the front side portion of the cover, and the front wall is generated without a reaction force for the tensile input in the front-rear direction. The main feature is that reaction force means for allowing the rear wall portion of the portion to expand is provided.
本発明のカウルカバーによれば、カバー上側部が日射を受けて車両前方へ延伸する方向に熱歪みが発生し、カバー前側部の後壁部が車両前方への押圧力を受けると、該カバー前側部の前壁部と後壁部とに跨って設けた反力手段が前後方向の圧縮入力に対して反力を発生するため、前記後壁部の車両前方への撓み変形を抑制し、カバー上側部が車両前方へ熱変形するのを抑制することができる。   According to the cowl cover of the present invention, when the upper side portion of the cover receives solar radiation and thermal distortion occurs in the direction of extending toward the front of the vehicle, and the rear wall portion of the front side portion of the cover receives a pressing force toward the front of the vehicle, Since the reaction force means provided across the front wall portion and the rear wall portion of the front side portion generates a reaction force against the compression input in the front-rear direction, the bending deformation of the rear wall portion toward the vehicle front is suppressed, It is possible to suppress the cover upper portion from being thermally deformed forward of the vehicle.
一方、フード後端部に衝突荷重が入力して、カバー前側部の前壁部に車両前方への撓み変形荷重として作用すると、前記反力手段は前後方向の引張り入力に対しては反力を発生せずに前壁部の後壁部に対する拡開を許容するため、該前壁部が底壁部の固定部分を支持点として車両前方へ容易に撓み変形して衝突エネルギーを吸収することができる。   On the other hand, when a collision load is input to the rear end of the hood and acts on the front wall portion of the front side portion of the cover as a bending deformation load forward of the vehicle, the reaction force means generates a reaction force against a longitudinal tensile input. In order to allow expansion of the front wall portion with respect to the rear wall portion without occurrence, the front wall portion can be easily bent and deformed forward of the vehicle with the fixed portion of the bottom wall portion as a support point to absorb the collision energy. it can.
以下、本発明の実施形態を図面と共に詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
図1〜図6は本発明にかかるカウルカバーの第1実施形態を示し、図1は自動車の車体フロント部におけるカウルカバー配設状態を示す斜視図、図2はカウルカバーの配設状態を示す断面図、図3はカバー前側部分を拡大して示す断面図、図4はフード後端部に衝突荷重が入力した際のカバー前側部の変形挙動を説明する断面図、図5は補強バーの下側から見た斜視図、図6は補強バーの上方から見た斜視図、図7は補強バーの側面図である。   1 to 6 show a first embodiment of a cowl cover according to the present invention, FIG. 1 is a perspective view showing a cowl cover arrangement state in a vehicle body front portion of an automobile, and FIG. 2 shows a cowl cover arrangement state. 3 is a cross-sectional view showing an enlarged front side portion of the cover, FIG. 4 is a cross-sectional view for explaining the deformation behavior of the front side of the cover when a collision load is input to the rear end of the hood, and FIG. FIG. 6 is a perspective view seen from above, FIG. 6 is a perspective view seen from above the reinforcing bar, and FIG. 7 is a side view of the reinforcing bar.
本実施形態のカウルカバー1は、図1、図2に示すように車体30のフロントウェスト部に設けられたカウルボックス31の上方開口部を覆って取付けてある。   The cowl cover 1 of the present embodiment is attached so as to cover an upper opening of a cowl box 31 provided at a front waist portion of a vehicle body 30 as shown in FIGS.
カウルボックス31は周知のように、車体30のフロントウェスト部の車幅方向骨格部材としての機能を持つ他、空調装置の外気取入れ部としての機能を併有し、ダッシュアッパパネル32とカウルフロント33とで上方を開放したボックス状に構成されている。   As is well known, the cowl box 31 has a function as a skeleton member in the vehicle width direction of the front waist portion of the vehicle body 30 and also has a function as an outside air intake portion of the air conditioner, and includes a dash upper panel 32 and a cowl front 33. And it is comprised in the box shape which opened upwards.
カウルカバー1は、適宜の合成樹脂材をもって射出成形され、前記カウルフロント33に固定されるカバー前側部2と、フロントウィンドシールド34に固定されるカバー上側部3と、を備えている。   The cowl cover 1 is injection-molded with an appropriate synthetic resin material, and includes a cover front side portion 2 fixed to the cowl front 33 and a cover upper side portion 3 fixed to the front windshield 34.
カバー前側部2は、図3にも示すようにやや前傾した前壁部2Aと、やや後傾した後壁部2Bと、こられ前,後壁部2A,2Bを連設した底壁部2Cと、で略V字形断面の凹状に形成してあり、前記底壁部2Cをカウルフロント33の上縁フランジ33aに重合してクリップ固定して取付け、前壁部2Aの上縁フランジ2A′をフード35の後端部下面に近接配置してある。   As shown in FIG. 3, the cover front side portion 2 includes a front wall portion 2A inclined slightly forward, a rear wall portion 2B inclined slightly rearward, and a bottom wall portion in which the front and rear wall portions 2A and 2B are connected in series. 2C, the bottom wall portion 2C is overlapped with the upper edge flange 33a of the cowl front 33, fixed by clips, and attached to the upper edge flange 2A 'of the front wall portion 2A. Is disposed close to the lower surface of the rear end of the hood 35.
また、前記後壁部2Bと底壁部2Cとで成す隅角部には、車幅方向に適宜の間隔をおいて、複数個の形状保持用のリブ4を形成してある。   In addition, a plurality of shape retaining ribs 4 are formed at corners formed by the rear wall portion 2B and the bottom wall portion 2C at appropriate intervals in the vehicle width direction.
カバー上側部3は、前記カバー前側部2の後壁部2Bの上端に連設してあり、後端部にはクリップ部3aを車幅方向に複数個一体成形してあって、該クリップ部3aをフロントウィンドシールド34の下縁に係着して取付けてある。   The upper cover portion 3 is connected to the upper end of the rear wall portion 2B of the front cover portion 2, and a plurality of clip portions 3a are integrally formed at the rear end portion in the vehicle width direction. 3a is attached to the lower edge of the front windshield 34.
また、このカバー上側部3の前記後壁部2Bと連設した前端部には、上方に突出する膨出部3bを車幅方向に形成してあり、この膨出部3b内にウォッシャーノズル5を取付けてある。   Further, a bulging portion 3b that protrudes upward is formed in the vehicle width direction at the front end portion of the cover upper portion 3 that is connected to the rear wall portion 2B, and a washer nozzle 5 is provided in the bulging portion 3b. Is installed.
そして、前記カバー前側部2の前壁部2Aと後壁部2Bとに跨って、前後方向の圧縮入力に対しては反力を出し、前後方向の引張り入力に対しては反力を出さずに前壁部2Aの後壁部2Bに対する拡開を許容する反力手段10を設けてある。   And, across the front wall portion 2A and the rear wall portion 2B of the front side portion 2 of the cover, a reaction force is given to the compression input in the front-rear direction and no reaction force is given to the tension input in the front-rear direction. The reaction force means 10 which permits the expansion with respect to the rear wall portion 2B of the front wall portion 2A is provided.
本実施形態ではこの反力手段10を、前記ウォッシャーノズル5の配設部近傍となるように車幅方向に複数個設けてある。   In the present embodiment, a plurality of reaction force means 10 are provided in the vehicle width direction so as to be near the portion where the washer nozzle 5 is disposed.
反力手段10として、本実施形態では適宜の合成樹脂材からなる補強バー11が用いられている。   As the reaction force means 10, a reinforcing bar 11 made of an appropriate synthetic resin material is used in the present embodiment.
この補強バー11は、その前端または後端の少なくとも一方の端面をカバー前側部2の対応する壁部に突き当てて取付けられ、本実施形態では補強バー11の前,後部端面を前記前壁部2Aと後壁部2Bの各内側面に突き当てて取付けてある。   The reinforcing bar 11 is attached by abutting at least one end surface of the front end or the rear end against a corresponding wall portion of the cover front side portion 2. In this embodiment, the front and rear end surfaces of the reinforcing bar 11 are the front wall portion. 2A and the rear wall 2B are abutted against each inner side surface and attached.
前記補強バー11は図5〜図7に示すように、前記カバー前側部2の前壁部2Aの上縁フランジ2A′と後壁部2Bとに略水平に跨る矩形板状のベース部12と、該ベース部12の前端部に所要長さでフランジ部12aを残して、下面の車幅方向両側部に突設されて前後方向に延在する骨格部13とを備えている。   As shown in FIGS. 5 to 7, the reinforcing bar 11 includes a rectangular plate-like base portion 12 that extends substantially horizontally across the upper edge flange 2 </ b> A ′ and the rear wall portion 2 </ b> B of the front wall portion 2 </ b> A of the cover front side portion 2. The base portion 12 is provided with a skeleton portion 13 that protrudes from both sides of the lower surface in the vehicle width direction and extends in the front-rear direction, leaving the flange portion 12a with a required length at the front end portion.
本実施形態では、前記骨格部13の前,後の端面13aを、カバー前側部2の対応する前壁部2Aおよび後壁部2Bの傾斜角度に合わせて形成し、これら前,後の端面13aをもって前壁部2Aおよび後壁部2Bの各内側面に突き当てるようにしている。   In this embodiment, the front and rear end surfaces 13a of the skeleton 13 are formed in accordance with the inclination angles of the corresponding front wall portion 2A and rear wall portion 2B of the cover front side portion 2, and these front and rear end surfaces 13a are formed. The front wall portion 2A and the rear wall portion 2B are abutted against each inner side surface.
前記ベース部12のフランジ部12aの前端部下面にはピン部材14を突設してある一方、前壁部2Aの上縁フランジ2A′には嵌合孔15を形成してあり、該ベース部12の前端部分を、このピン部材14を嵌合孔15に圧入嵌合して、前壁部2Aの上縁フランジ2A′に固定してある。   A pin member 14 projects from the lower surface of the front end portion of the flange portion 12a of the base portion 12, while a fitting hole 15 is formed in the upper edge flange 2A 'of the front wall portion 2A. The front end portion of 12 is fixed to the upper edge flange 2A ′ of the front wall portion 2A by press-fitting the pin member 14 into the fitting hole 15.
また、骨格部13の後端面13aと、これに対応する後壁部2Bとに、補強バー11に前後方向に作用する引張り荷重に対して離脱可能な係合手段16を設けてある。   In addition, the rear end surface 13a of the skeleton part 13 and the corresponding rear wall part 2B are provided with engagement means 16 that can be detached from a tensile load acting on the reinforcing bar 11 in the front-rear direction.
この係合手段16として、本実施形態では骨格部13の後端面13aに設けた突起部17と、後壁部2Bに形成されて前記突起部17が挿通する係止孔18とで構成している。   In this embodiment, the engaging means 16 includes a protrusion 17 provided on the rear end surface 13a of the skeleton 13 and a locking hole 18 formed in the rear wall 2B through which the protrusion 17 is inserted. Yes.
従って、補強バー11は、前記突起部17を後壁部2Bの係止孔18に挿通係合した後、フランジ部12aのピン部材14を前壁部2Aの上縁フランジ2A′の嵌合孔15に圧入嵌合して、凹状のカバー前側部2に取付けられる。   Accordingly, the reinforcing bar 11 inserts and engages the protrusion 17 with the locking hole 18 of the rear wall 2B, and then engages the pin member 14 of the flange 12a with the fitting hole of the upper edge flange 2A 'of the front wall 2A. 15 is press-fitted and fitted to the concave cover front side 2.
前壁部2Aの上縁フランジ2A′上には、車幅方向両端に亘ってフードシール部材19をクリップ固定して、フード35の閉止時に該フードシール部材19がフードの後端部下面に密接してシールするようにしているが、前記補強バー11のフランジ部12aの取付け部分では、フードシール部材19がこのフランジ部12aを跨ぐようにして取付けられる。   On the upper edge flange 2A ′ of the front wall portion 2A, a hood seal member 19 is clipped over both ends in the vehicle width direction so that the hood seal member 19 is in close contact with the lower surface of the rear end portion of the hood when the hood 35 is closed. However, the hood seal member 19 is attached so as to straddle the flange portion 12a at the attachment portion of the flange portion 12a of the reinforcing bar 11.
以上の構成により本実施形態のカウルカバー1によれば、カバー上側部3が日射を受けると、該カバー上側部3はその後端部がクリップ部3aを介してフロントウィンドシールド34の下縁に固定されているため、該カバー上側部3はこの日射熱により車両前方へ延伸する方向に熱歪みが発生する。   According to the cowl cover 1 of the present embodiment having the above configuration, when the cover upper portion 3 is exposed to sunlight, the rear end portion of the cover upper portion 3 is fixed to the lower edge of the front windshield 34 via the clip portion 3a. For this reason, the cover upper portion 3 is thermally strained in the direction extending forward of the vehicle due to the solar heat.
このカバー上側部3の車両前方への熱歪みにより、カバー前側部2の後壁部2Bは車両前方への押圧力を受けて、底壁部2Cの固定部を支持点として車両前方へ撓み変形する傾向となるが、該カバー前側部2の前壁部2Aと後壁部2Bとに跨って設けた反力手段10としての補強バー11が前後方向の圧縮入力に対して反力を出すため、前記後壁部2Bの車両前方への撓み変形を抑制し、カバー上側部3が車両前方へ熱変形するのを抑制することができる。   Due to the thermal distortion of the cover upper side portion 3 toward the front of the vehicle, the rear wall portion 2B of the cover front side portion 2 receives a pressing force toward the front of the vehicle and bends and deforms toward the front of the vehicle using the fixing portion of the bottom wall portion 2C as a support point. However, the reinforcing bar 11 as the reaction means 10 provided across the front wall portion 2A and the rear wall portion 2B of the cover front side portion 2 generates a reaction force against the compression input in the front-rear direction. Further, it is possible to suppress the deformation of the rear wall portion 2B from being bent forward of the vehicle, and to prevent the cover upper portion 3 from being thermally deformed forward of the vehicle.
この結果、カバー上側部3が車両前方へ熱変形して外観を損なうことがなく、また、この熱変形によりウォッシャーノズル5の噴射角度が変化するのを回避することができる。   As a result, the cover upper portion 3 is not thermally deformed forward of the vehicle and the appearance is not impaired, and it is possible to avoid the change in the injection angle of the washer nozzle 5 due to the heat deformation.
とりわけ、前記補強バー11はウォッシャーノズル5の配設部近傍に設けてあるので、該ウォッシャーノズル5の噴射角度の変化の抑制効果を高めることができる。   In particular, since the reinforcing bar 11 is provided near the portion where the washer nozzle 5 is disposed, the effect of suppressing the change in the injection angle of the washer nozzle 5 can be enhanced.
一方、フード35の後端部に上方より衝突荷重Fが入力して、カバー前側部2の前壁部2Aに車両前方への撓み変形荷重として作用すると、補強バー11には前後方向の引張り荷重として作用するが、該補強バー11はその後端を後壁部2Bに当接配置しているのに過ぎないため、この引張り入力に対しては反力を出さずに図4に示すように前壁部2Aの後壁部2Bに対する拡開を許容するため、該前壁部2Aが底壁部2Cの固定部分を支持点として車両前方へ容易に撓み変形して衝突エネルギーを吸収する。   On the other hand, when a collision load F is input to the rear end portion of the hood 35 from above and acts on the front wall portion 2A of the cover front side portion 2 as a bending deformation load toward the front of the vehicle, a tensile load in the front-rear direction is applied to the reinforcing bar 11. However, since the reinforcing bar 11 is merely disposed in contact with the rear wall 2B at its rear end, no reaction force is generated against this tensile input, as shown in FIG. In order to allow expansion of the wall portion 2A with respect to the rear wall portion 2B, the front wall portion 2A easily deflects and deforms forward of the vehicle with the fixed portion of the bottom wall portion 2C as a support point to absorb collision energy.
ここで、本実施形態にあっては前述のように反力手段10として、前端または後端の少なくとも一方の端面をカバー前側部2の対応する壁部2Aまたは2Bに突き当てて取付けられた補強バー11を用いているため、設計を容易に行えるとともに、構造を簡単にすることができる。   Here, in the present embodiment, as described above, as the reaction force means 10, the reinforcement attached by abutting at least one end surface of the front end or the rear end against the corresponding wall portion 2 </ b> A or 2 </ b> B of the cover front side portion 2. Since the bar 11 is used, the design can be easily performed and the structure can be simplified.
また、この補強バー11は、矩形板状のベース部12と、該ベース部12の車幅方向両側部に突設されて前後方向に延在する骨格部13と、を備え、該骨格部13の前後方向の端面13aをもって前記カバー前側部2の前壁部2Aおよび又は後壁部2Bに突き当てるようにしてあるため、これら一対の骨格部13によって、補強バー11の板厚を全体的に大きくすることなく前後方向の圧縮剛性を高められて、コスト的に有利に得ることができ、特に、補強バー11の対応する壁部2B,2Aに対する当接面積を大きくする場合に、該骨格部13の断面形状のみを大きくしてその前後方向の端面13aの面積を大きくすればよいので、設計上およびコスト上有利となる。   The reinforcing bar 11 includes a rectangular plate-like base portion 12 and a skeleton portion 13 that protrudes from both sides of the base portion 12 in the vehicle width direction and extends in the front-rear direction. Since the end face 13a in the front-rear direction is abutted against the front wall part 2A and / or the rear wall part 2B of the front side part 2 of the cover, the plate thickness of the reinforcing bar 11 is entirely reduced by the pair of skeleton parts 13. The compression rigidity in the front-rear direction can be increased without increasing the size, which can be advantageously obtained in terms of cost. In particular, when the contact area of the reinforcing bar 11 with the corresponding walls 2B and 2A is increased, the skeleton portion is increased. Since only the cross-sectional shape of 13 is enlarged to increase the area of the end face 13a in the front-rear direction, this is advantageous in terms of design and cost.
更に、補強バー11を例えば、前述のようにその前端部を前壁部2Aの上縁フランジ2A′上に固定し、骨格部13の後端面13aを後壁部2Bに突き当てて取付ける場合に、該後端面13aと後壁部2Bとに、前後方向の引張り荷重に対して離脱可能な係合手段16を設けてあるため、補強バー11の後端部をグラツキを生じることなく適正に取付けることができる。   Further, for example, when the reinforcing bar 11 is attached by fixing the front end of the reinforcing bar 11 on the upper edge flange 2A 'of the front wall 2A and abutting the rear end surface 13a of the skeleton 13 on the rear wall 2B, as described above. Since the rear end surface 13a and the rear wall portion 2B are provided with the engaging means 16 that can be detached from the tensile load in the front-rear direction, the rear end portion of the reinforcing bar 11 can be properly attached without causing any blur. be able to.
しかも、この係合手段16を、骨格部13の後端面13aに突設した突起部17と、後壁部2Bに形成されて前記突起部17が挿通する係止孔18と、の簡単な構造とすることができるので、設計上より有利に得ることができる。   Moreover, the engaging means 16 has a simple structure of a protrusion 17 projecting from the rear end surface 13a of the skeleton 13 and a locking hole 18 formed in the rear wall 2B through which the protrusion 17 is inserted. Therefore, it can be obtained more advantageously in design.
前記実施形態では、上述のように係合手段16を突起部17と係止孔18とで構成しているが、図8に示すように突起部17の先端に、前記係止孔18をくぐり抜けてその孔縁に係止するフック部17aを形成すれば、突起部17の抜け止めを行えて補強バー11の後端部の取付け安定性を高めることができる。このフック部17aは、補強バー11に前後方向に所定の引張り荷重が入力した際には、反力を出さずに係止孔18から抜け出し得る係止力となるようにフック高さが設定されることは勿論である。   In the above embodiment, the engaging means 16 is constituted by the protrusion 17 and the locking hole 18 as described above, but the locking hole 18 passes through the tip of the protrusion 17 as shown in FIG. If the hook portion 17a that is locked to the hole edge is formed, the projection portion 17 can be prevented from coming off, and the attachment stability of the rear end portion of the reinforcing bar 11 can be enhanced. The hook portion 17a has a hook height that is set to a locking force that can be pulled out from the locking hole 18 without generating a reaction force when a predetermined tensile load is input to the reinforcing bar 11 in the front-rear direction. Of course.
図9は本発明の第2実施形態を示すもので、本実施形態では係合手段10として、補強バー11の骨格部13の後端面13aの近傍と、これに対応する後壁部2Bとに設けられて、相互に係合するフック部20,21で構成している。   FIG. 9 shows a second embodiment of the present invention. In this embodiment, the engaging means 10 includes the vicinity of the rear end surface 13a of the skeleton 13 of the reinforcing bar 11 and the corresponding rear wall 2B. The hook portions 20 and 21 are provided and engaged with each other.
この第2実施形態では、骨格部13の後端面13aは後壁部2Bの内側面に当接しているだけであり、また、フック部20,21は、補強バー11に前後方向に所定の引張り荷重が入力した際には、反力を出さずにフック部20,21相互がそれらの斜面20a,21aが擦り抜けて離脱し得る係止力となるようにフック高さが設定される。   In the second embodiment, the rear end surface 13a of the skeleton portion 13 is only in contact with the inner side surface of the rear wall portion 2B, and the hook portions 20 and 21 are tensioned to the reinforcing bar 11 in the front-rear direction. When a load is input, the hook height is set so that the hook portions 20 and 21 have a locking force that allows the slant surfaces 20a and 21a to rub through and disengage without generating a reaction force.
従って、この第2実施形態にあっても前記第1実施形態と同様に、カバー上側部3の熱変形を補強バー11の圧縮反力で抑制し、フード35の後端部に上方から衝突入力Fが作用した場合には、フック部20,21相互が擦り抜けて離脱し、前壁部2Aを車両前方へ容易に撓み変形してエネルギー吸収機能を発揮させることができる。   Accordingly, even in the second embodiment, similarly to the first embodiment, the thermal deformation of the cover upper portion 3 is suppressed by the compression reaction force of the reinforcing bar 11, and the collision input is applied to the rear end portion of the hood 35 from above. When F acts, the hook portions 20 and 21 are scraped away from each other, and the front wall portion 2A can be easily bent and deformed forward of the vehicle to exhibit an energy absorbing function.
図10,図11は本発明の第3実施形態を示し、本実施形態では補強バー11は、その前端側を前記第1,第2実施形態と同様に、フランジ部12aを前壁部2Aの上縁フランジ2A′にピン部材14と嵌合孔15との圧入嵌合で固定してある一方、後端面13aは後壁部2Bの内側面に接着剤により接着固定してある。   10 and 11 show a third embodiment of the present invention. In this embodiment, the reinforcing bar 11 has a flange 12a at the front wall portion 2A at the front end side in the same manner as in the first and second embodiments. While fixed to the upper edge flange 2A ′ by press-fitting the pin member 14 and the fitting hole 15, the rear end surface 13a is bonded and fixed to the inner side surface of the rear wall portion 2B with an adhesive.
そして、この補強バー11の前後方向中間部に、前後方向に所定の引張り荷重が作用した際に破断可能な易破断部22を設けてある。   An easily breakable portion 22 that can be broken when a predetermined tensile load is applied in the front-rear direction is provided in the middle portion of the reinforcing bar 11 in the front-rear direction.
この易破断部22は、補強バー11の下面側から所要の深さで切り込みを設けることで構成することができる。   The easily breakable portion 22 can be configured by providing a cut at a required depth from the lower surface side of the reinforcing bar 11.
この第3実施形態の構造によれば、カバー上側部3の熱変形を補強バー11の圧縮反力で抑制することは前記第1,第2実施形態と同様である。   According to the structure of the third embodiment, the thermal deformation of the upper cover portion 3 is suppressed by the compression reaction force of the reinforcing bar 11 as in the first and second embodiments.
一方、フード35の後端部に上方から衝突荷重Fが入力し、カバー前側部2の前壁部2Aに車両前方への撓み変形荷重として作用し、補強バー11に前後方向に所定の引張り荷重が作用すると、該補強バー11が易破断部22で図10に示すように破断する。   On the other hand, a collision load F is input to the rear end portion of the hood 35 from above, acts on the front wall portion 2A of the cover front side portion 2 as a bending deformation load forward of the vehicle, and applies a predetermined tensile load to the reinforcing bar 11 in the front-rear direction. When this acts, the reinforcing bar 11 breaks at the easily breakable portion 22 as shown in FIG.
これにより、前壁部2Aが車両前方へ容易に撓み変形してエネルギー吸収機能を発揮する。   As a result, the front wall portion 2A is easily bent and deformed forward of the vehicle and exhibits an energy absorbing function.
この第3実施形態では、補強バー11の前,後端部をカバー前側部2の前壁部2Aと後壁部2Bとに固定してあって、該補強バー11の前後方向に切り込み等により易破断部22を設けることで、前後方向の所定の引張り荷重に対しては反力を出さない構成として、前記変形例および第2実施形態のようなフック部構造を採用することなく、補強バー11のカバー前側部2に対する取付け安定性が得られるので、補強バー11の構造を簡単にすることができる。   In the third embodiment, the front and rear end portions of the reinforcing bar 11 are fixed to the front wall portion 2A and the rear wall portion 2B of the cover front side portion 2, and the reinforcing bar 11 is cut in the front-rear direction. By providing the easily breakable portion 22, a reinforcing bar is employed without adopting the hook portion structure as in the modified example and the second embodiment as a configuration that does not generate a reaction force against a predetermined tensile load in the front-rear direction. Therefore, the structure of the reinforcing bar 11 can be simplified.
図12は本発明の第4実施形態を示すもので、本実施形態にあっては、前記第1実施形態の補強バー11における前端部のフランジ部12aおよび後端面13aの突起部17が無い補強バー11Aとして構成してある。   FIG. 12 shows a fourth embodiment of the present invention. In this embodiment, the reinforcing bar 11 of the first embodiment is reinforced without the flange portion 12a at the front end portion and the protrusion portion 17 of the rear end surface 13a. It is configured as a bar 11A.
この補強バー11Aは、その後端面13aを後壁部2Bの内側面に接着剤により接着固定し、前端面13aを前壁部2Aの内側面に当接して、これら前壁部2Aと後壁部2Bとに跨って取付けてある。   The reinforcing bar 11A has its rear end surface 13a adhered and fixed to the inner side surface of the rear wall portion 2B with an adhesive, the front end surface 13a abutting against the inner side surface of the front wall portion 2A, and the front wall portion 2A and the rear wall portion. It is attached across 2B.
補強バー11の前端部と前壁部2Aとの取付け安定性を高めるため、本実施形態では骨格部13の前端面13aに突起部17Aを設け、これを前壁部2Aに設けた係止孔18Aに挿通係止してある。即ち、第1実施形態における補強バー11の後端部と後壁部2Bと同様の関係構造が採られているが、第2実施形態と同様のフック部構造を採用してもよい。   In order to improve the attachment stability between the front end portion of the reinforcing bar 11 and the front wall portion 2A, in the present embodiment, a projection portion 17A is provided on the front end surface 13a of the skeleton portion 13, and this is a locking hole provided in the front wall portion 2A. It is inserted and locked to 18A. That is, the same relational structure as that of the rear end portion of the reinforcing bar 11 and the rear wall portion 2B in the first embodiment is adopted, but a hook portion structure similar to that of the second embodiment may be adopted.
従って、本実施形態によれば、前記第1実施形態および又は第2実施形態と同様の作用効果を奏することができる。   Therefore, according to this embodiment, the same operational effects as those of the first embodiment and / or the second embodiment can be achieved.
なお、前記各実施形態では補強バー11を、カバー前側部2のウォッシャーノズル5を配設した近傍にのみ設けてあるが、必要に応じて該ウォッシャーノズル5から車幅方向に離間した位置に増設するようにしてもよい。   In each of the above embodiments, the reinforcing bar 11 is provided only in the vicinity of the cover front side portion 2 where the washer nozzle 5 is disposed. However, if necessary, the reinforcing bar 11 is extended to a position spaced from the washer nozzle 5 in the vehicle width direction. You may make it do.
また、この補強バー11は、カバー前側部2の凹状の開口部分から下がった位置に配設することも可能で、その取付け角度も略水平に限らず前傾又は後傾して取付けることも可能である。   Further, the reinforcing bar 11 can be disposed at a position lowered from the concave opening portion of the front side portion 2 of the cover, and its attachment angle is not limited to being substantially horizontal, and can be attached to be inclined forward or backward. It is.
自動車の車体フロント部のカウルカバー配設状態を示す斜視図。The perspective view which shows the cowl cover arrangement | positioning state of the vehicle body front part of a motor vehicle. 本発明の第1実施形態におけるカウルカバーの配設状態を示す断面図。Sectional drawing which shows the arrangement | positioning state of the cowl cover in 1st Embodiment of this invention. カバー前側部分を拡大して示す断面図。Sectional drawing which expands and shows a cover front side part. フード後端部に衝突荷重が入力した際のカバー前側部の変形挙動を説明する断面図。Sectional drawing explaining the deformation | transformation behavior of the cover front side part when a collision load inputs into the food | hood rear end part. 補強バーの下側から見た斜視図。The perspective view seen from the lower side of the reinforcement bar. 補強バーの上方から見た斜視図。The perspective view seen from the upper direction of a reinforcement bar. 補強バーの側面図。The side view of a reinforcement bar. 第1実施形態の変形例を示す要部断面図。The principal part sectional view showing the modification of a 1st embodiment. 本発明の第2実施形態を示す断面図。Sectional drawing which shows 2nd Embodiment of this invention. 本発明の第3実施形態を示す断面図。Sectional drawing which shows 3rd Embodiment of this invention. 本発明の第3実施形態における変形挙動を示す図3と同様の断面図。Sectional drawing similar to FIG. 3 which shows the deformation | transformation behavior in 3rd Embodiment of this invention. 本発明の第4実施形態を示す断面図。Sectional drawing which shows 4th Embodiment of this invention.
符号の説明Explanation of symbols
1 カウルカバー
2 カバー前側部
2A 前壁部
2A′ 上縁フランジ
2B 後壁部
2C 底壁部
3 カバー上側部
5 ウォッシャーノズル
10 反力手段
11,11A 補強バー
12 ベース部
13 骨格部
13a 端面
16 係合手段
17,17A 突起部
17a,20,21 フック部
18,18A 係止孔
22 易破断部
30 車体
31 カウルボックス
33 カウルフロント
34 フロントウィンドシールド
35 フード
DESCRIPTION OF SYMBOLS 1 Cowl cover 2 Cover front side part 2A Front wall part 2A 'Upper edge flange 2B Rear wall part 2C Bottom wall part 3 Cover upper part 5 Washer nozzle 10 Reaction force means 11, 11A Reinforcement bar 12 Base part 13 Skeletal part 13a End face 16 Engagement Coupling means 17, 17A Protruding part 17a, 20, 21 Hook part 18, 18A Locking hole 22 Easily breakable part 30 Car body 31 Cowl box 33 Cowl front 34 Front windshield 35 Hood

Claims (9)

  1. 前,後壁部と底壁部とで凹状に形成されたカバー前側部と、該カバー前側部の後壁部に連設されたカバー上側部と、を備え、該カバー上側部の後端を車体に固定する一方、カバー前側部の底壁部を車体に固定して、前壁部の上端をフードの後部下面に近接配置したカウルカバーにおいて、
    前記カバー前側部の前壁部と後壁部とに跨って、前後方向の圧縮入力に対しては反力を発生し、前後方向の引張り入力に対しては反力を発生せずに前壁部の後壁部に対する拡開を許容する反力手段を設けたことを特徴とするカウルカバー。
    A cover front side portion formed in a concave shape in the front and rear wall portions and the bottom wall portion, and a cover upper side portion connected to the rear wall portion of the cover front side portion, the rear end of the cover upper portion being In the cowl cover that is fixed to the vehicle body, the bottom wall portion of the front side portion of the cover is fixed to the vehicle body, and the upper end of the front wall portion is arranged close to the rear lower surface of the hood,
    A reaction force is generated for the compression input in the front-rear direction across the front wall portion and the rear wall portion of the front side portion of the cover, and the front wall is generated without a reaction force for the tensile input in the front-rear direction. A cowl cover characterized in that a reaction force means for allowing the rear wall portion of the portion to expand is provided.
  2. カバー上側部には、カバー前側部の後壁部近傍にウォッシャーノズルが配設され、反力手段は少なくともウォッシャーノズルの配設部近傍に設けられていることを特徴とする請求項1に記載のカウルカバー。   The washer nozzle is disposed in the upper part of the cover near the rear wall of the front part of the cover, and the reaction force means is provided at least in the vicinity of the disposed part of the washer nozzle. Cowl cover.
  3. 反力手段が、前端または後端の少なくとも一方の端面を前壁部または後壁部の対応する壁部に突き当てて取付けられた補強バーであることを特徴とする請求項1または2に記載のカウルカバー。   The reaction force means is a reinforcing bar attached by abutting at least one end face of the front end or the rear end against a corresponding wall portion of the front wall portion or the rear wall portion. Cowl cover.
  4. 補強バーの前記一方の端面と、前記対応する壁部とに、前後方向の引張り荷重に対して離脱可能な係合手段を設けたことを特徴とする請求項3に記載のカウルカバー。   4. The cowl cover according to claim 3, wherein engagement means that can be detached with respect to a tensile load in the front-rear direction is provided on the one end surface of the reinforcing bar and the corresponding wall portion.
  5. 係合手段が、補強バーの前記一方の端面に設けた突起部と、前記対応する壁部に設けた係止孔と、で構成されていることを特徴とする請求項4に記載のカウルカバー。   5. The cowl cover according to claim 4, wherein the engaging means includes a protrusion provided on the one end face of the reinforcing bar and a locking hole provided on the corresponding wall. .
  6. 突起部は、その先端に前記係止孔をくぐり抜けてその孔縁に係止するフック部を備えていることを特徴とする請求項5に記載のカウルカバー。   6. The cowl cover according to claim 5, wherein the protrusion includes a hook portion that passes through the locking hole at the tip thereof and locks to the edge of the hole.
  7. 係合手段が、補強バーの前記一方の端面の近傍と、前記対応する壁部とに設けられて、相互に係合するフック部であることを特徴とする請求項4に記載のカウルカバー。   5. The cowl cover according to claim 4, wherein the engaging means is a hook portion that is provided in the vicinity of the one end face of the reinforcing bar and the corresponding wall portion and engages with each other.
  8. 補強バーは、その前,後端部がカバー前側部の前壁部と後壁部とに各々固定され、該補強バーの前後方の中間部に、前後方向に所定の引張り荷重が作用した際に破断可能な易破断部を設けたことを特徴とする請求項3に記載のカウルカバー。   The front and rear ends of the reinforcing bar are fixed to the front wall portion and the rear wall portion of the front side portion of the cover, respectively, and when a predetermined tensile load acts in the front-rear intermediate portion of the reinforcing bar in the front-rear direction. The cowl cover according to claim 3, wherein an easily breakable portion is provided in the breakable portion.
  9. 補強バーは、板状のベース部と、該ベース部の車幅方向両側部に突設されて前後に延在する骨格部と、を備え、該骨格部の前後方向の端面をもって前記カバー前側部の前壁部および又は後壁部に突き当てるようにしたことを特徴とする請求項3〜8のいずれか1つに記載のカウルカバー。   The reinforcing bar includes a plate-like base portion and a skeleton portion projecting from both sides of the base portion in the vehicle width direction and extending in the front-rear direction, and the front side portion of the cover having an end surface in the front-rear direction of the skeleton portion The cowl cover according to any one of claims 3 to 8, wherein the cowl cover is abutted against the front wall portion and / or the rear wall portion.
JP2006312658A 2006-11-20 2006-11-20 Cowl cover Pending JP2008126792A (en)

Priority Applications (1)

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JP2006312658A JP2008126792A (en) 2006-11-20 2006-11-20 Cowl cover

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JP2006312658A JP2008126792A (en) 2006-11-20 2006-11-20 Cowl cover

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013129288A (en) * 2011-12-21 2013-07-04 Daihatsu Motor Co Ltd Cowl louver device of vehicle
JP2014043194A (en) * 2012-08-28 2014-03-13 Kojima Press Industry Co Ltd Cowl louver
JP2016094107A (en) * 2014-11-14 2016-05-26 マツダ株式会社 Vehicular cowl structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09175435A (en) * 1995-12-22 1997-07-08 Nippon Plast Co Ltd Cowl top cover
JPH11165654A (en) * 1997-12-04 1999-06-22 Toyota Motor Corp Automobile cowl structure
JP2002046649A (en) * 2000-08-02 2002-02-12 Fuji Heavy Ind Ltd Cowl panel-front bulkhead structure
JP2005289237A (en) * 2004-04-01 2005-10-20 Nippon Plast Co Ltd Cowl top cover

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09175435A (en) * 1995-12-22 1997-07-08 Nippon Plast Co Ltd Cowl top cover
JPH11165654A (en) * 1997-12-04 1999-06-22 Toyota Motor Corp Automobile cowl structure
JP2002046649A (en) * 2000-08-02 2002-02-12 Fuji Heavy Ind Ltd Cowl panel-front bulkhead structure
JP2005289237A (en) * 2004-04-01 2005-10-20 Nippon Plast Co Ltd Cowl top cover

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013129288A (en) * 2011-12-21 2013-07-04 Daihatsu Motor Co Ltd Cowl louver device of vehicle
JP2014043194A (en) * 2012-08-28 2014-03-13 Kojima Press Industry Co Ltd Cowl louver
JP2016094107A (en) * 2014-11-14 2016-05-26 マツダ株式会社 Vehicular cowl structure

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