JP4631467B2 - Front fender upper end support structure - Google Patents

Front fender upper end support structure Download PDF

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JP4631467B2
JP4631467B2 JP2005049396A JP2005049396A JP4631467B2 JP 4631467 B2 JP4631467 B2 JP 4631467B2 JP 2005049396 A JP2005049396 A JP 2005049396A JP 2005049396 A JP2005049396 A JP 2005049396A JP 4631467 B2 JP4631467 B2 JP 4631467B2
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end surface
front fender
bracket
support structure
support
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晶章 高木
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Nissan Motor Co Ltd
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Description

本発明は、自動車のフロントフェンダーの上端部を、その下方に位置する車体側支持部に衝撃吸収ブラケットを介して支持するフロントフェンダーの上端部支持構造に関する。   The present invention relates to an upper end support structure for a front fender that supports an upper end of a front fender of an automobile via a shock absorbing bracket on a vehicle body side support located below the front fender.

自動車の車体前部に形成されたエンジンルームを覆うフードの車幅方向両側にはフロントフェンダーが位置しており、そのフロントフェンダーの上端部は車幅方向内方に湾曲させて、エンジンルームを閉止したフードの上面に滑らかに連続するようにしている。   Front fenders are located on both sides in the vehicle width direction of the hood that covers the engine room formed in the front of the car body, and the upper end of the front fender is curved inward in the vehicle width direction to close the engine room The upper surface of the hood is smoothly continuous.

前記フロントフェンダーの上端部は、その下方に位置するフードリッジパネルに固定支持されるのであるが、中には、フロントフェンダーの上端部に衝撃力が加わった場合に、その衝撃力を緩和するためにフロントフェンダーの上端部とフードリッジパネルとの間に衝撃吸収ブラケットを介在させたものが知られている（例えば、特許文献１参照）。
特開２００２−１７８９５３号公報（第２，３頁、第４，５図） The upper end portion of the front fender is fixedly supported by a hood ridge panel positioned below the front fender, but in order to reduce the impact force when an impact force is applied to the upper end portion of the front fender. Further, there is known one in which an impact absorbing bracket is interposed between an upper end portion of a front fender and a hood ridge panel (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-178953 (pages 2, 3 and 4, 5)

しかしながら、かかる従来のフロントフェンダーの上端部支持構造では、衝撃吸収ブラケットを、フロントフェンダーに作用する荷重が入力する上端面と、この上端面の前後両側部分を下方に折曲した一対の脚部と、によってハット型に形成し、そのハット型の衝撃吸収ブラケットを車両前後方向に複数並べてフロントフェンダーの上端部とフードリッジパネルとの間に介在させ、上端面に入力した荷重を両側の脚部で支持する構造となっている。   However, in such a conventional front-end fender upper-end support structure, the shock-absorbing bracket has an upper-end surface to which a load acting on the front fender is input, and a pair of legs that are bent downward on both front and rear side portions of the upper-end surface. , And a plurality of hat-type shock-absorbing brackets are arranged in the longitudinal direction of the vehicle and interposed between the upper end of the front fender and the hood ridge panel. It has a supporting structure.

このため、前記衝撃吸収ブラケットは、ハット型に形成された単一の構造をもって、フロントフェンダーの取付け剛性やフロントフェンダー上端への手付き時の剛性の確保と、フロントフェンダー上端に衝撃力が入力した際のエネルギー吸収と、の相反する機能を発揮する必要があり、剛性確保と衝撃吸収との両機能を同時に満足することが不可能となってしまい、いずれか一方の機能を犠牲にせざるを得なくなってしまう。   For this reason, the shock absorbing bracket has a single structure formed in a hat shape to ensure the rigidity of the front fender when it is attached to the front fender, and when the impact force is input to the upper end of the front fender. It is necessary to demonstrate the opposite function of energy absorption, and it becomes impossible to satisfy both the functions of securing rigidity and shock absorption at the same time, and one of the functions must be sacrificed. End up.

そこで、本発明は、剛性確保に適した構造と衝撃吸収に適した構造の複数種類のブラケットの共働でフロントフェンダーを支持することにより、フロントフェンダーの支持剛性を確保しつつ、衝撃力を効率良く吸収できるフロントフェンダーの上端部支持構造を提供するものである。   Therefore, the present invention supports the front fender with the cooperation of multiple types of brackets that are suitable for securing rigidity and suitable for absorbing shock, thereby ensuring impact rigidity while ensuring the support rigidity of the front fender. An upper end support structure for a front fender that can absorb well is provided.

本発明にあっては、フロントフェンダーの上端部が、その下方に位置する車体側支持部に衝撃吸収ブラケットを介して支持されるフロントフェンダーの上端部支持構造において、
前記衝撃吸収ブラケットは、フロントフェンダーに作用する下方荷重が入力される第１上端面、およびこの第１上端面を前記車体側支持部に両持ち支持する両側脚部からなる両持ちブラケットと、
フロントフェンダーに作用する下方荷重が入力され、前記第１上端面と上下方向に重ね合わせ配置される第２上端面、およびこの第２上端面を前記車体側支持部に片持ち支持する片側脚部からなる片持ちブラケットと、
前記第１上端面と前記第２上端面との間に設けられ、通常時は両者の重ね合わせ状態を維持するとともに、上方からの衝撃力の入力時には両者を分離する上端面整合手段と、を備えたことを最も主要な特徴とする。 In the present invention, in the upper end support structure of the front fender, the upper end of the front fender is supported by the vehicle body side support located below the shock absorber bracket.
The shock absorbing bracket includes a first upper end surface to which a downward load acting on the front fender is input, and a both-end bracket that includes both side legs that support the first upper end surface on the vehicle body side support portion;
A lower load acting on the front fender is input, and a second upper end surface that is disposed to overlap the first upper end surface in the vertical direction, and a one-side leg portion that cantilever-supports the second upper end surface to the vehicle body-side support portion. A cantilever bracket consisting of
An upper end surface aligning means provided between the first upper end surface and the second upper end surface, which maintains the overlapping state in the normal state and separates the two when the impact force is input from above; The most important feature is the provision.

本発明によれば、両持ちブラケットは両側脚部で第１上端面を支持できるため、上方からの荷重に対して剛性が比較的大きくなり、片持ちブラケットは片側脚部で第２上端面を片持ち支持するため、上方からの荷重に対して剛性が比較的小さくなる。   According to the present invention, since the both-end bracket can support the first upper end surface with the both side legs, the rigidity is relatively large with respect to the load from above, and the cantilever bracket has the second upper end surface with the one-side leg. Since the cantilever is supported, the rigidity is relatively small with respect to the load from above.

そして、通常時は、上端面整合手段によって両持ちブラケットの第１上端面と片持ちブラケットの第２上端面とが互いに重ね合わされているため、両持ちブラケットの支持剛性と片持ちブラケットの支持剛性とが合体されるため、全体的に大きな剛性をもってフロントフェンダーの上端部を車体側支持部に支持できる。   In the normal state, the first upper end surface of the cantilever bracket and the second upper end surface of the cantilever bracket are overlapped with each other by the upper end surface aligning means. Therefore, the upper end portion of the front fender can be supported by the vehicle body side support portion with a large rigidity as a whole.

一方、上方から衝撃力が入力された際には、前記第１上端面と前記第２上端面とが分離されるので、両持ちブラケットの支持剛性と片持ちブラケットの支持剛性も分離して独立に機能するため、全体的な剛性が低下されて前記衝撃力を効率良く吸収することができる。   On the other hand, when the impact force is input from above, the first upper end surface and the second upper end surface are separated from each other, so that the support rigidity of the both-end bracket and the support rigidity of the cantilever bracket are also separated. Therefore, the overall rigidity is reduced and the impact force can be absorbed efficiently.

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７は本発明にかかるフロントフェンダーの上端部支持構造の一実施形態を示し、図１はフロントフェンダーの支持部分を示す斜視図、図２は両持ちブラケットと片持ちブラケットとの分離状態を示す斜視図、図３は両持ちブラケットと片持ちブラケットとの組み付け状態を示す斜視図、図４は図３中Ａ−Ａ線に沿って断面とした衝撃吸収ブラケットの取付け状態を示す断面図、図５は図１中Ｂ−Ｂ線に沿って断面とした衝撃吸収ブラケットの取付け状態を示す断面図、図６はフロントフェンダーの上端部に衝撃力が入力した初期段階を示す断面図、図７はフロントフェンダーの上端部に衝撃力が入力した終期段階を示す断面図である。   1 to 7 show an embodiment of a front fender upper end support structure according to the present invention, FIG. 1 is a perspective view showing a support portion of the front fender, and FIG. 2 is a separation of a both-end bracket and a cantilever bracket. FIG. 3 is a perspective view showing the assembled state of the double-sided bracket and the cantilever bracket. FIG. 4 is a cross-sectional view showing the mounting state of the shock absorbing bracket taken along the line AA in FIG. FIG. 5 is a cross-sectional view showing a mounting state of the shock absorbing bracket taken along the line B-B in FIG. 1, and FIG. 6 is a cross-sectional view showing an initial stage in which an impact force is input to the upper end of the front fender. FIG. 7 is a cross-sectional view showing a final stage in which an impact force is input to the upper end portion of the front fender.

本実施形態のフロントフェンダーの上端部支持構造は、図１に示すように自動車１のフロントフェンダー２の上端部２ａが、その下方に位置する車体側支持部としてのフードリッジパネル３に衝撃吸収ブラケット１０を介して支持されるようになっている。   As shown in FIG. 1, the upper end 2a of the front fender 2 of the vehicle 1 has a shock absorbing bracket attached to the hood ridge panel 3 as a vehicle body side support located below the front fender 2 of the present embodiment. 10 is supported.

前記フロントフェンダー２は、車体前部に構成されるエンジンルーム４の車幅方向両側の外郭を構成し、そのフロントフェンダー２の車幅方向内側には所定間隔をおいて前記フードリッジパネル３が配置されるとともに、図４に示すようにフロントフェンダー２の上端部２ａは車幅方向内方に湾曲されて、その車幅方向端末部分２ｂがエンジンルーム４の上端開放口を覆うフード５の車幅方向端末部分５ａと滑らかに連続している。   The front fender 2 constitutes an outer shell on both sides in the vehicle width direction of the engine room 4 formed in the front part of the vehicle body, and the hood ridge panel 3 is arranged at a predetermined interval on the inner side in the vehicle width direction of the front fender 2. In addition, as shown in FIG. 4, the upper end 2 a of the front fender 2 is curved inward in the vehicle width direction, and the vehicle width of the hood 5 whose end portion 2 b in the vehicle width direction covers the upper end opening of the engine room 4. It is smoothly connected to the direction terminal portion 5a.

フロントフェンダー２の前記車幅方向端末部分２ｂは、一旦下方に折曲した後に水平方向に折曲してフランジ部２ｃを形成してあり、このフランジ部２ｃと前記フードリッジパネル３の上端面３ａとの間に前記衝撃吸収ブラケット１０が介在されるようになっており、それらフランジ部２ｃとフードリッジパネル３の上端面３ａとの間には衝撃吸収ブラケット１０を配置するための間隔Ｓが設けられている。   The vehicle width direction end portion 2b of the front fender 2 is bent downward and then bent horizontally to form a flange portion 2c. The flange portion 2c and the upper end surface 3a of the hood ridge panel 3 are formed. The shock absorbing bracket 10 is interposed between the flange portion 2c and the upper end surface 3a of the hood ridge panel 3. A space S for disposing the shock absorbing bracket 10 is provided. It has been.

前記衝撃吸収ブラケット１０は、図２に示すようにフロントフェンダー２に作用する下方荷重が入力される第１上端面１１ａ、およびこの第１上端面１１ａを前記フードリッジパネル３に両持ち支持する両側脚部１１ｂ，１１ｃからなる両持ちブラケット１１と、フロントフェンダー２に作用する下方荷重が入力され、図３に示すように前記第１上端面１１ａと上下方向に重ね合わせ配置される第２上端面１２ａ、およびこの第２上端面１２ａを前記フードリッジパネル３に片持ち支持する片側脚部１２ｂからなる片持ちブラケット１２と、前記第１上端面１１ａと前記第２上端面１２ａとの間に設けられ、通常時は両者の重ね合わせ状態を維持するとともに、上方からの衝撃力Ｆ（図５参照）の入力時には両者を分離する上端面整合手段としての嵌合部１３と、を備えている。   As shown in FIG. 2, the shock absorbing bracket 10 has a first upper end surface 11 a to which a downward load acting on the front fender 2 is input, and both sides that support the first upper end surface 11 a on the hood ridge panel 3. As shown in FIG. 3, a second upper end surface that is arranged so as to overlap with the first upper end surface 11a is inputted with a downward load acting on the both-end bracket 11 composed of the legs 11b and 11c and the front fender 2. 12a and a cantilever bracket 12 comprising one leg portion 12b that cantilever-supports the second upper end surface 12a to the hood ridge panel 3, and is provided between the first upper end surface 11a and the second upper end surface 12a. The upper end surface aligning means for maintaining the superposition state of the two at the normal time and separating the two at the time of inputting the impact force F (see FIG. 5) from above. A fitting portion 13 of Te, and a.

前記嵌合部１３は、図２に示すように一方の第２上端面１２ａに形成される挿入穴１３ａと、他方の第１上端面１１ａに形成されてその挿入穴１３ａに嵌合する挿入部１３ｂとで形成され、その挿入部１３ｂが前記挿入穴１３ａに嵌合されることにより、第１上端面１１ａと第２上端面１２ａとが重ね合わせ状態で整合される。   As shown in FIG. 2, the fitting portion 13 includes an insertion hole 13a formed in one second upper end surface 12a and an insertion portion formed in the other first upper end surface 11a and fitted in the insertion hole 13a. The first upper end surface 11a and the second upper end surface 12a are aligned in an overlapping state by the insertion portion 13b being fitted into the insertion hole 13a.

両持ちブラケット１１の両側脚部１１ｂ，１１ｃは第１上端面１１ａの車幅方向両側に設けられるとともに、片持ちブラケット１２の片側脚部１２ｂは第２上端面１２ａの車両後側に設けられ、図３に示すように第２上端面１２ａを両側脚部１１ｂ，１１ｃ間で第１上端面１１ａの下方に潜らせて、第１上端面１１ａの下面に第２上端面１２ａを重ねてある。   Both side legs 11b and 11c of the both-end bracket 11 are provided on both sides in the vehicle width direction of the first upper end face 11a, and one side leg 12b of the cantilever bracket 12 is provided on the rear side of the second upper end face 12a. As shown in FIG. 3, the second upper end surface 12a is hidden under the first upper end surface 11a between both leg portions 11b and 11c, and the second upper end surface 12a is superimposed on the lower surface of the first upper end surface 11a.

このように前記両持ちブラケット１１と前記片持ちブラケット１２とは、挿入部１３ｂを挿入穴１３ａに嵌合することにより、第１上端面１１ａと第２上端面１２ａとが重ね合わされた状態で１組とし、図１に示すようにその１組の両持ちブラケット１１と片持ちブラケット１２とを複数組（本実施形態では３組）設けて、前記フロントフェンダー２のフランジ部２ｃとフードリッジパネル３の上端面３ａとの間に、前後方向に適宜間隔をおいて配置してある。   As described above, the both-end support bracket 11 and the cantilever bracket 12 are 1 in a state where the first upper end surface 11a and the second upper end surface 12a are overlapped with each other by fitting the insertion portion 13b into the insertion hole 13a. As shown in FIG. 1, as shown in FIG. 1, a plurality of sets (three sets in this embodiment) of a pair of both-end support brackets 11 and cantilever brackets 12 are provided, and the flange portion 2 c of the front fender 2 and the hood ridge panel 3 are provided. Between the upper end surface 3a and the upper end surface 3a.

このとき、前記両持ちブラケット１１の両側脚部１１ｂ，１１ｃおよび前記片持ちブラケット１２の片側脚部１２ｂのそれぞれの下端部は、図２，図３に示すように外方に折曲して取付面１１ｄ，１２ｃとなっている。   At this time, the lower ends of the both side legs 11b and 11c of the both-end bracket 11 and the one-side leg 12b of the cantilever bracket 12 are bent outward and attached as shown in FIGS. Surfaces 11d and 12c are formed.

一方、両持ちブラケット１１の第１上端面１１ａには取付けボルト１４（図５参照）の取付け穴１１ｅが形成されるとともに、片持ちブラケット１２の第２上端面１２ａには、第１・第２上端面１１ａ，１２ａの重ね合わせ状態で前記取付け穴１１ｅに対応する位置に矩形状の作業穴１２ｄが形成される。   On the other hand, a mounting hole 11e of a mounting bolt 14 (see FIG. 5) is formed in the first upper end face 11a of the both-end bracket 11, and the first and second ends are provided in the second upper end face 12a of the cantilever bracket 12. A rectangular work hole 12d is formed at a position corresponding to the mounting hole 11e when the upper end surfaces 11a and 12a are overlapped.

そして、フロントフェンダー２をフードリッジパネル３に取り付ける際には、図５に示すように両持ちブラケット１１および前記片持ちブラケット１２の取付面１１ｄ，１２ｃをフードリッジパネル３の上端面３ａにスポット溶接などにより結合するとともに、フロントフェンダー２のフランジ部２ｃに形成したボルト挿通穴２ｄから挿通した取付けボルト１４を第１上端面１１ａのボルト取付け穴１１ｅに挿通して、その先端ねじ部１４ａに第２上端面１２ａの作業穴１２ｄから挿通したナット１５を締付け固定するようになっている。   When the front fender 2 is attached to the hood ridge panel 3, as shown in FIG. 5, the mounting surfaces 11d and 12c of the both-end bracket 11 and the cantilever bracket 12 are spot welded to the upper end surface 3a of the hood ridge panel 3. The mounting bolt 14 inserted through the bolt insertion hole 2d formed in the flange portion 2c of the front fender 2 is inserted into the bolt mounting hole 11e of the first upper end surface 11a and the second screw portion 14a is connected to the second screw portion 14a. The nut 15 inserted through the work hole 12d of the upper end surface 12a is fastened and fixed.

従って、両持ちブラケット１１は両側脚部１１ｂ，１１ｃがフードリッジパネル３に結合されるとともに、第１上端面１１ａがフロントフェンダー２のフランジ部２ｃにボルト１４・ナット１５結合されることになるが、片持ちブラケット１２は片側脚部１２ｂがフードリッジパネル３に結合されるのみで、第２上端面１２ａは嵌合部１３を介して第１上端面１１ａに整合された状態となっている。   Accordingly, the both-end bracket 11 has both leg portions 11b and 11c coupled to the hood ridge panel 3, and the first upper end surface 11a is coupled to the flange portion 2c of the front fender 2 with the bolt 14 and the nut 15. In the cantilever bracket 12, only one leg portion 12 b is coupled to the hood ridge panel 3, and the second upper end surface 12 a is aligned with the first upper end surface 11 a via the fitting portion 13.

ところで、前記片持ちブラケット１２は、図２に示すように第２上端面１２ａから片側脚部１２ｂに亘って、それぞれの両側部に連続してリブ１２ｅを形成してあるとともに、その片側脚部１２ｂの取付面１２ｃに至る下部に凹設部１２ｆを形成して、片側脚部１２ｂによる第２上端面１２ａの片持ち支持強度を高めるようになっている。   By the way, the cantilever bracket 12 has ribs 12e continuously formed on both sides from the second upper end surface 12a to the one side leg 12b as shown in FIG. A recessed portion 12f is formed in the lower portion of the 12b reaching the mounting surface 12c so as to increase the cantilever support strength of the second upper end surface 12a by the one-side leg portion 12b.

ここで、前記両持ちブラケット１１は、これをフードリッジパネル３に結合する際に両側脚部１１ｂ，１１ｃを車幅方向に配置するとともに、図５に示すようにその両側脚部１１ｂ，１１ｃの前記フードリッジパネル３への支持点Ｐ１に対して第１上端面１１ａの荷重入力点Ｐ２、つまり取付けボルト１４を取り付けた取付け穴１１ｅを距離Ｌ１だけ車両後方にオフセット配置してある。   Here, the both-side bracket 11 has both leg portions 11b and 11c arranged in the vehicle width direction when the bracket 11 is coupled to the hood ridge panel 3, and the both side leg portions 11b and 11c are arranged as shown in FIG. The load input point P2 of the first upper end surface 11a, that is, the mounting hole 11e to which the mounting bolt 14 is mounted, is offset from the support point P1 to the hood ridge panel 3 by a distance L1 to the rear of the vehicle.

また、前記両持ちブラケット１１と前記片持ちブラケット１２とは、それぞれを車両前後方向に配置して第２上端面１２ａを第１上端面１１ａの下側に配置して、第１・第２上端面１１ａ，１２ａの整合状態を維持する嵌合部１３は、図６中破線に示すように第２上端面１２ａの下方変位で第１上端面１１との整合を解除するようになっている。   Further, the both-end bracket 11 and the cantilever bracket 12 are respectively arranged in the vehicle front-rear direction, and the second upper end surface 12a is disposed below the first upper end surface 11a, and the first and second upper portions are arranged. The fitting portion 13 that maintains the alignment state of the end surfaces 11a, 12a releases the alignment with the first upper end surface 11 by the downward displacement of the second upper end surface 12a as shown by the broken line in FIG.

そして、図２，図３に示すように前記第２上端面１２ａの先端部に第１上端面１１ａから突出する押圧部１２ｇを形成する一方、図５に示すように左右フロントフェンダー２の上端部２ａ間を覆うフード５から前記押圧部１２ｇに向かって突起部１６を突設してある。   2 and 3, a pressing portion 12g protruding from the first upper end surface 11a is formed at the distal end portion of the second upper end surface 12a, while the upper end portions of the left and right front fenders 2 are formed as shown in FIG. A protrusion 16 is provided so as to protrude from the hood 5 covering the space 2a toward the pressing portion 12g.

つまり、前記フードリッジパネル３の上端面３ａに取り付けた衝撃吸収ブラケット１０は、図４に示すようにフロントフェンダー２の車幅方向端末部分２ｂから更に車幅方向内方に位置しているため、その上方はフード５によって覆われることになり、前記突起部１６はそのフード５から突設されることになる。   That is, the shock absorbing bracket 10 attached to the upper end surface 3a of the hood ridge panel 3 is located further inward in the vehicle width direction from the vehicle width direction terminal portion 2b of the front fender 2, as shown in FIG. The upper part is covered with the hood 5, and the protrusion 16 protrudes from the hood 5.

このとき、前記第１・第２上端面１１ａ，１２ａの上方はフロントフェンダー２のフランジ部２ｃで覆われているが、そのフランジ部２ｃに前記突起部１６を挿入する開口部２ｅを形成してある。   At this time, the upper portions of the first and second upper end surfaces 11a and 12a are covered with the flange portion 2c of the front fender 2, and an opening 2e for inserting the protruding portion 16 is formed in the flange portion 2c. is there.

また、上端面整合手段としての嵌合部１３は、上述したように第２上端面１２ａに形成される挿入穴１３ａと、第１上端面１１ａに形成されてその挿入穴１３ａに嵌合する挿入部１３ｂと、を備えて構成されるが、図４に示すようにその挿入部１３ｂに前記挿入穴１３ａに弾発的に係合する係合部１３ｃを形成してある。   Moreover, the fitting part 13 as an upper end surface alignment means is the insertion hole 13a formed in the 2nd upper end surface 12a as mentioned above, and the insertion which is formed in the 1st upper end surface 11a and fits into the insertion hole 13a. 4, an engaging portion 13 c that elastically engages with the insertion hole 13 a is formed in the insertion portion 13 b as shown in FIG. 4.

つまり、前記挿入部１３ｂは、第１上端面１１ａから切り下げて前記挿入穴１３ａの両側に弾発的に当接する切片で形成し、その挿入部１３ｂの挿入穴１３ａ下側を外方に拡幅させて前記係合部１３ｃを形成してあり、図４に示すようにその係合部１３ｃの拡幅幅Ｗは前記挿入穴１３ａの幅Ｄよりも大きくしてある。   That is, the insertion portion 13b is formed by a section that is cut down from the first upper end surface 11a and elastically abuts on both sides of the insertion hole 13a, and the lower side of the insertion hole 13a of the insertion portion 13b is widened outward. The engaging portion 13c is formed, and the width W of the engaging portion 13c is larger than the width D of the insertion hole 13a as shown in FIG.

以上の構成により本実施形態のフロントフェンダーの上端部支持構造によれば、フロントフェンダー２のフランジ部２ｃとフードリッジパネル３の上端面３ａとの間に介在する衝撃吸収ブラケット１０を、両持ちブラケット１１と片持ちブラケット１２とで構成してあり、両持ちブラケット１１は両側脚部１１ｂ，１１ｃで第１上端面１１ａを支持できるため、上方からの荷重に対して剛性が比較的大きくなり、片持ちブラケット１２は片側脚部１２ｂで第２上端面１２ａを片持ち支持するため、上方からの荷重に対して剛性が比較的小さくなる。   With the above-described configuration, the front fender upper end support structure of the present embodiment allows the shock absorbing bracket 10 interposed between the flange 2c of the front fender 2 and the upper end surface 3a of the hood ridge panel 3 to be mounted on both ends. 11 and the cantilever bracket 12. Since the both-end bracket 11 can support the first upper end surface 11 a by the both side legs 11 b and 11 c, the rigidity becomes relatively large with respect to the load from above. Since the cantilever bracket 12 cantilever-supports the second upper end surface 12a with the one-side leg portion 12b, the rigidity is relatively small with respect to the load from above.

そして、通常時は図６中実線に示すように、挿入穴１３ａと挿入部１３ｂとで構成される嵌合部１３によって、両持ちブラケット１１の第１上端面１１ａと片持ちブラケット１２の第２上端面１２ａとが互いに重ね合わされているため、両持ちブラケット１１の支持剛性と片持ちブラケット１２の支持剛性とが合体されるため、全体的に大きな剛性をもってフロントフェンダー２の上端部２ａをフードリッジパネル３に支持できる。   In a normal state, as shown by a solid line in FIG. 6, the first upper end surface 11 a of the both-end bracket 11 and the second end of the cantilever bracket 12 are fitted by the fitting portion 13 constituted by the insertion hole 13 a and the insertion portion 13 b. Since the upper end surface 12a is overlapped with each other, the support rigidity of the both-end support bracket 11 and the support rigidity of the cantilever bracket 12 are combined, so that the upper end portion 2a of the front fender 2 is connected to the hood ridge with a large overall rigidity. The panel 3 can be supported.

従って、フロントフェンダー２をフードリッジパネル３に取り付けた際の剛性を十分に確保できるとともに、フロントフェンダー２の上端部２ａに手付きした時の荷重が作用した際の剛性をも確保して、フロントフェンダー２が容易に撓み変形するのを防止することができる。   Therefore, the front fender 2 can be sufficiently secured when attached to the hood ridge panel 3, and the rigidity when the load applied to the upper end portion 2a of the front fender 2 is secured can be secured. 2 can be prevented from being easily bent and deformed.

一方、上方から衝撃力Ｆが入力された際、例えば、歩行者と衝突して頭部Ｈがフロントフェンダー２の上端部２ａとフード５の車幅方向端末部分５ａとの間に干渉し、そのときの衝撃力Ｆが入力された場合に、図６中破線に示すようにフード５の下降に伴って突起部１６がフランジ部２ｃの開口部２ｅから下方に突出して、片持ちブラケット１２の第２上端面１２ａの押圧部１２ｇを下方に押圧する。   On the other hand, when the impact force F is input from above, for example, the head H collides with the pedestrian and interferes between the upper end 2a of the front fender 2 and the vehicle width direction terminal portion 5a of the hood 5, When the impact force F is input, the protrusion 16 protrudes downward from the opening 2e of the flange 2c as the hood 5 descends as shown by the broken line in FIG. 2. Press the pressing part 12g of the upper end surface 12a downward.

すると、前記第２上端面１２ａは下方に移動して、その第２上端面１２ａに形成した嵌合部１３の挿入穴１３ａは第１上端面１１ａに形成した挿入部１３ｂから抜け出て、互いに重ね合わされていた第１上端面１１ａと第２上端面１２ａとが分離されるので、両持ちブラケット１１の支持剛性と片持ちブラケット１２の支持剛性も分離して機能して独立に機能するため、全体的な剛性が低下されて前記衝撃力Ｆを効率良く吸収することができる。   Then, the second upper end surface 12a moves downward, and the insertion holes 13a of the fitting portion 13 formed in the second upper end surface 12a come out of the insertion portion 13b formed in the first upper end surface 11a and overlap each other. Since the first upper end surface 11a and the second upper end surface 12a that have been separated are separated, the support rigidity of the both-end bracket 11 and the support rigidity of the cantilever bracket 12 function separately and function independently. Therefore, the impact force F can be absorbed efficiently.

また、本実施形態は前記作用効果に加えて、両持ちブラケット１１の両側脚部１１ｂ，１１ｃを車幅方向に配置し、その両側脚部１１ｂ，１１ｃのフードリッジパネル３への支持点Ｐ１に対して第１上端面１１ａの荷重入力点Ｐ２を車両後方にオフセット配置したので、歩行者と衝突して頭部Ｈがフロントフェンダー２およびフード５に干渉する際に、その頭部Ｈは斜め前方から衝撃力Ｆが入力するため、前記嵌合部１３の嵌合が外れて第１上端面１１ａと第２上端面１２ａとが分離した際に、図７中破線に示すように両持ちブラケット１１が車両後方に変形し易くなる。   Further, in the present embodiment, in addition to the above-described effects, both side legs 11b and 11c of the both-end bracket 11 are arranged in the vehicle width direction, and the support legs P1 of the both side legs 11b and 11c to the hood ridge panel 3 are provided. On the other hand, since the load input point P2 of the first upper end surface 11a is offset at the rear of the vehicle, when the head H collides with the pedestrian and interferes with the front fender 2 and the hood 5, the head H is obliquely forward. Since the impact force F is inputted from the above, when the fitting portion 13 is disengaged and the first upper end surface 11a and the second upper end surface 12a are separated, as shown by the broken line in FIG. Is easily deformed rearward of the vehicle.

このため、両持ちブラケット１１はフロントフェンダー２の支持剛性が低下されるため、前記衝撃力Ｆのエネルギー吸収効率をより向上することができる。   For this reason, since the support rigidity of the front fender 2 is lowered in the both-end bracket 11, the energy absorption efficiency of the impact force F can be further improved.

更に、第２上端面１２ａを第１上端面１１ａの下側に配置して、嵌合部１３は第２上端面１２ａの下方変位で第１上端面１１との整合を解除するようになっており、第２上端面１２ａの先端部に第１上端面１１ａから突出する押圧部１２ｇを形成し、フード５から前記押圧部１２ｇに向かって突起部１６を突設したので、衝撃力Ｆの入力によりフード５が押し下げられると、突起部１６が早い段階で第２上端面１２ａを下方に変位させて嵌合部１３による整合状態を解除させることができるので、両持ちブラケット１１と片持ちブラケット１２とを分離させて、衝撃力Ｆの吸収効果を早期に発揮することができる。   Further, the second upper end surface 12a is disposed below the first upper end surface 11a, and the fitting portion 13 releases the alignment with the first upper end surface 11 by the downward displacement of the second upper end surface 12a. In addition, since the pressing portion 12g protruding from the first upper end surface 11a is formed at the distal end portion of the second upper end surface 12a and the protruding portion 16 protrudes from the hood 5 toward the pressing portion 12g, the impact force F is input. When the hood 5 is pushed down by this, the projecting portion 16 can displace the second upper end surface 12a downward at an early stage to release the alignment state by the fitting portion 13, so that the both-end bracket 11 and the cantilever bracket 12 are released. And the effect of absorbing the impact force F can be exhibited at an early stage.

更にまた、第１・第２上端面１１ａ，１２ａの上方を覆ったフロントフェンダー２のフランジ部２ｃに、前記突起部１６を挿入する開口部２ｅを形成したので、突起部１６が直接に第２上端面１２ａの押圧部１２ｇを押圧することができるので、嵌合部１３の嵌合状態を確実にかつ早期に解除することができる。   Furthermore, since the opening 2e for inserting the protruding portion 16 is formed in the flange portion 2c of the front fender 2 covering the upper sides of the first and second upper end surfaces 11a, 12a, the protruding portion 16 is directly connected to the second portion. Since the pressing part 12g of the upper end surface 12a can be pressed, the fitting state of the fitting part 13 can be reliably and quickly released.

また、前記嵌合部１３を構成する挿入穴１３ａおよび挿入部１３ｂは、挿入部１３ｂに挿入穴１３ａに弾発的に係合する係合部１３ｃを形成したので、挿入穴１３ａに挿入部１３ｂを挿入することにより、第１上端面１１ａと第２上端面１２ａとが容易に分離されないので、両持ちブラケット１１と片持ちブラケット１２の取付時に両者が一体化されてそれらの取付け作業を容易かつ正確に行うことができるとともに、衝撃力Ｆの入力時には両者を分離することができる。   Further, the insertion hole 13a and the insertion part 13b constituting the fitting part 13 are formed with an engagement part 13c that elastically engages with the insertion hole 13a in the insertion part 13b, so that the insertion part 13b is inserted into the insertion hole 13a. Since the first upper end surface 11a and the second upper end surface 12a are not easily separated by inserting the both ends, the both ends are integrated when the both-end bracket 11 and the cantilever bracket 12 are attached. It can be performed accurately and both can be separated when the impact force F is input.

図８，図９は前記実施形態の第１・第２変形例をそれぞれ示し、前記実施形態と同一構成部分に同一符号を付して重複する説明を省略して述べるものとし、図８は第１変形例を示す片持ちブラケットの斜視図、図９は第２変形例を示す片持ちブラケットの斜視図である。   8 and 9 show first and second modifications of the embodiment, respectively, and the same components as those in the embodiment are denoted by the same reference numerals and redundant description is omitted. FIG. FIG. 9 is a perspective view of a cantilever bracket showing a second modification, and FIG. 9 is a perspective view of a cantilever bracket showing a second modification.

図８に示す第１変形例の片持ちブラケット１２Ｘ、および図９に示す第２変形例の片持ちブラケット１２Ｙは、基本的に上記実施形態と同様の構成となり、それぞれ第２上端面１２ａおよび片側脚部１２ｂを備えている。   The cantilever bracket 12X of the first modification shown in FIG. 8 and the cantilever bracket 12Y of the second modification shown in FIG. 9 basically have the same configuration as that of the above-described embodiment, and each has a second upper end surface 12a and one side. The leg part 12b is provided.

そして、前記第１・第２変形例が前記実施形態と主に異なる点は、前記片側脚部１２ｂに、屈曲変形が容易となる易変形手段２０を設けてある。   The first and second modified examples are mainly different from the above-described embodiment in that easy-modifying means 20 that facilitates bending deformation is provided on the one-side leg portion 12b.

即ち、第１変形例の片持ちブラケット１２Ｘは、図８に示すように片側脚部１２ｂの両側に形成したリブ１２ｅにＶ字状の切欠き２１を形成し、この切欠き２１を易変形手段２０としてある。   That is, in the cantilever bracket 12X of the first modified example, as shown in FIG. 8, V-shaped notches 21 are formed in ribs 12e formed on both sides of the one-side leg portion 12b, and the notches 21 are easily deformed. It is as 20.

また、第２変形例の片持ちブラケット１２Ｙは、図９に示すように片側脚部１２ｂの両側に形成したリブ１２ｅを全て除去することにより易変形手段２０としてある。   Further, the cantilever bracket 12Y of the second modified example is configured as the easily deformable means 20 by removing all the ribs 12e formed on both sides of the one leg portion 12b as shown in FIG.

従って、前記第１・第２変形例の片持ちブラケット１２Ｘ，１２Ｙでは、片側脚部１２ｂが易変形手段２０によって座屈変形が容易となり、衝撃力Ｆが入力した際に嵌合部１３の嵌合穴１３ａと嵌合部１３ｂとの嵌合を外し易くして、エネルギー吸収効率をより増大することができる。   Therefore, in the cantilever brackets 12X and 12Y of the first and second modified examples, the one side leg portion 12b is easily buckled by the easily deformable means 20, and the fitting portion 13 is fitted when the impact force F is input. It is possible to easily disengage the fitting hole 13a from the fitting portion 13b, thereby further increasing the energy absorption efficiency.

ところで、本発明は前記実施形態および各変形例に例をとって説明したが、これら実施形態に限ることなく本発明の要旨を逸脱しない範囲で他の実施形態を各種採用することができる。   By the way, although this invention was demonstrated taking the said embodiment and each modification as an example, various other embodiment can be employ | adopted in the range which is not restricted to these embodiments and does not deviate from the summary of this invention.

本発明の一実施形態におけるフロントフェンダーの支持部分を示す斜視図である。It is a perspective view which shows the support part of the front fender in one Embodiment of this invention. 本発明の一実施形態における両持ちブラケットと片持ちブラケットとの分離状態を示す斜視図である。It is a perspective view which shows the separation state of the both-ends bracket and cantilever bracket in one Embodiment of this invention. 本発明の一実施形態における両持ちブラケットと片持ちブラケットとの組み付け状態を示す斜視図である。It is a perspective view which shows the assembly | attachment state of the both-ends bracket and cantilever bracket in one Embodiment of this invention. 図３中Ａ−Ａ線に沿って断面とした衝撃吸収ブラケットの取付け状態を示す断面図である。It is sectional drawing which shows the attachment state of the impact-absorbing bracket made into the cross section along the AA line in FIG. 図１中Ｂ−Ｂ線に沿って断面とした衝撃吸収ブラケットの取付け状態を示す断面図である。It is sectional drawing which shows the attachment state of the impact-absorbing bracket made into the cross section along the BB line in FIG. 本発明の一実施形態におけるフロントフェンダーの上端部に衝撃力が入力した初期段階を示す断面図である。It is sectional drawing which shows the initial stage in which the impact force was input into the upper end part of the front fender in one Embodiment of this invention. 本発明の一実施形態におけるフロントフェンダーの上端部に衝撃力が入力した終期段階を示す断面図である。It is sectional drawing which shows the final stage in which the impact force was input into the upper end part of the front fender in one Embodiment of this invention. 本発明の一実施形態の第１変形例を示す片持ちブラケットの斜視図である。It is a perspective view of the cantilever bracket which shows the 1st modification of one Embodiment of this invention. 本発明の一実施形態の第２変形例を示す片持ちブラケットの斜視図である。It is a perspective view of the cantilever bracket which shows the 2nd modification of one Embodiment of this invention.

符号の説明Explanation of symbols

２ フロントフェンダー
２ａ フロントフェンダーの上端部
３ フードリッジパネル（車体側支持部）
５ フード
１０ 衝撃吸収ブラケット
１１ 両持ちブラケット
１１ａ 第１上端面
１１ｂ，１１ｃ 両側脚部
１２，１２Ｘ，１２Ｙ 片持ちブラケット
１２ａ 第２上端面
１２ｂ 片側脚部
１２ｃ フランジ部
１２ｅ 開口部
１２ｇ 押圧部
１３ 嵌合部（上端面整合手段）
１３ａ 挿入穴
１３ｂ 挿入部
１３ｃ 係合部
１６ 突起部
２０ 易変形手段
Ｐ１ 両側脚部の支持点
Ｐ２ 第１上端面の荷重入力点 2 Front fender 2a Upper end of front fender 3 Hood ridge panel (vehicle body support)
5 Hood 10 Shock-absorbing bracket 11 Both-end bracket 11a First upper end surface 11b, 11c Both side leg portions 12, 12X, 12Y Cantilever bracket 12a Second upper end surface 12b One side leg portion 12c Flange portion 12e Opening portion 12g Pressing portion 13 Fitting Part (upper end surface alignment means)
13a Insertion hole 13b Insertion part 13c Engagement part 16 Projection part 20 Easily deformable means P1 Support point of both leg parts P2 Load input point of first upper end surface

Claims (6)

フロントフェンダーの上端部が、その下方に位置する車体側支持部に衝撃吸収ブラケットを介して支持されるフロントフェンダーの上端部支持構造において、
前記衝撃吸収ブラケットは、フロントフェンダーに作用する下方荷重が入力される第１上端面、およびこの第１上端面を前記車体側支持部に両持ち支持する両側脚部からなる両持ちブラケットと、
フロントフェンダーに作用する下方荷重が入力され、前記第１上端面と上下方向に重ね合わせ配置される第２上端面、およびこの第２上端面を前記車体側支持部に片持ち支持する片側脚部からなる片持ちブラケットと、
前記第１上端面と前記第２上端面との間に設けられ、通常時は両者の重ね合わせ状態を維持するとともに、上方からの衝撃力の入力時には両者を分離する上端面整合手段と、を備えたことを特徴とするフロントフェンダーの上端部支持構造。 In the upper end support structure of the front fender, the upper end of the front fender is supported by the vehicle body side support located below the front fender via the shock absorbing bracket.
The shock absorbing bracket includes a first upper end surface to which a downward load acting on the front fender is input, and a both-end bracket that includes both side legs that support the first upper end surface on the vehicle body side support portion;
A lower load acting on the front fender is input, and a second upper end surface that is disposed to overlap the first upper end surface in the vertical direction, and a one-side leg portion that cantilever-supports the second upper end surface to the vehicle body-side support portion. A cantilever bracket consisting of
An upper end surface aligning means provided between the first upper end surface and the second upper end surface, which maintains the overlapping state in the normal state and separates the two when the impact force is input from above; An upper end support structure for a front fender characterized by comprising: 両持ちブラケットは、両側脚部を車幅方向に配置するとともに、その両側脚部の前記車体側支持部への支持点に対して第１上端面の荷重入力点を車両後方にオフセット配置したことを特徴とする請求項１に記載のフロントフェンダーの上端部支持構造。   The double-sided bracket has both side legs arranged in the vehicle width direction, and the load input point of the first upper end surface is offset behind the vehicle with respect to the support point of the both side legs to the vehicle body side support part. The upper end part support structure of the front fender of Claim 1 characterized by these. 前記第２上端面を前記第１上端面の下側に配置して、前記上端面整合手段は第２上端面の下方変位で第１上端面との整合を解除する構成とし、かつ、第２上端面の先端部に第１上端面から突出する押圧部を形成する一方、左右フロントフェンダーの上端部間を覆うフードから上記押圧部に向かって突起部を突設したことを特徴とする請求項１または２に記載のフロントフェンダーの上端部支持構造。   The second upper end surface is disposed below the first upper end surface, and the upper end surface aligning means is configured to release alignment with the first upper end surface by downward displacement of the second upper end surface, and second The press part which protrudes from a 1st upper end surface is formed in the front-end | tip part of an upper end surface, On the other hand, the protrusion part protruded toward the said press part from the hood which covers between the upper end parts of a right-and-left front fender. The upper-end part support structure of the front fender of 1 or 2. フロントフェンダーに前記第１・第２上端面の上方を覆うフランジ部を設けるとともに、そのフランジ部に前記突起部を挿入する開口部を形成したことを特徴とする請求項３に記載のフロントフェンダーの上端部支持構造。   4. The front fender according to claim 3, wherein the front fender is provided with a flange portion that covers the top of the first and second upper end surfaces, and an opening for inserting the protrusion is formed in the flange portion. Upper end support structure. 上端面整合手段は、第１・第２上端面の一方に形成される挿入穴と、他方に形成されてその挿入穴に嵌合する挿入部と、を備え、その挿入部に前記挿入穴に弾発的に係合する係合部を形成したことを特徴とする請求項１〜４のいずれか１つに記載のフロントフェンダーの上端部支持構造。   The upper end surface aligning means includes an insertion hole formed on one of the first and second upper end surfaces, and an insertion portion formed on the other and fitted into the insertion hole, and the insertion portion is provided with the insertion hole. The front fender upper end support structure according to any one of claims 1 to 4, wherein an engaging portion that is elastically engaged is formed. 片持ちブラケットの片側脚部に、屈曲変形が容易となる易変形手段を設けたことを特徴とする請求項１〜５のいずれか１つに記載のフロントフェンダーの上端部支持構造。   The front fender upper end support structure according to any one of claims 1 to 5, wherein an easily deformable means that facilitates bending deformation is provided on one leg portion of the cantilever bracket.
JP2005049396A 2005-02-24 2005-02-24 Front fender upper end support structure Expired - Fee Related JP4631467B2 (en)

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JP4811327B2 (en) * 2007-04-09 2011-11-09 トヨタ車体株式会社 Automobile fender panel support structure
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