CN100560419C - Vehicle front body structure - Google Patents

Vehicle front body structure Download PDF

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Publication number
CN100560419C
CN100560419C CNB2006101059366A CN200610105936A CN100560419C CN 100560419 C CN100560419 C CN 100560419C CN B2006101059366 A CNB2006101059366 A CN B2006101059366A CN 200610105936 A CN200610105936 A CN 200610105936A CN 100560419 C CN100560419 C CN 100560419C
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China
Prior art keywords
cover plate
wall portion
overall width
width direction
hinge arms
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CN101108635A (en
Inventor
大野英明
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Priority to CNB2006101059366A priority Critical patent/CN100560419C/en
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Abstract

A kind of vehicle front body structure, hinge arms (1) has main wall portion (1a) and cover plate assembly wall portion (1b), described main wall portion (1a) points to roughly with its table back side that the posture of overall width direction is rotatably supported on the hinge bracket (6), and described cover plate assembly wall portion (1b) stretches out to overall width direction inboard from the last ora terminalis of main wall portion (1a).On the other hand, stretch out upward as cover plate back flange (4) limit at junction surface between cover plate back reinforcement (3) and the dash side (2), the limit is to roughly vehicle fore-and-aft direction extension setting.In this structure, the relative cover plate back flange (4) of the main wall portion (1a) of hinge arms (1) is to the overall width deviation in driction.Adopt the present invention, can further improve being applied to the shock absorbing capability of the impact load on the engine protection cover plate (1).

Description

Vehicle front body structure
Technical field
The present invention relates to vehicle front body structure.
Background technology
As vehicle front body structure in the past, known have a following structure: hinge bracket is installed at the rear portion at the frame member that forms the engine room lateral margin, and hinge arms is installed at the side edge part at engine protection cover plate rear portion, hinge arms is installed in rotation on this hinge bracket, and the engine protection cover plate just can be closed the last side opening of engine room that (for example patent documentation 1: TOHKEMY 2002-337744 communique) with opening and closing.
In this vehicle front body structure, preferably the impact load that is applied on the engine protection cover plate is had shock absorbing capability, in patent documentation 1, improved by attachment face to hinge bracket, improved shock absorbing capability.Utilize this structure also can obtain higher shock absorbing capability.But, wishing that shock absorbing capability is higher, the inventor studies assiduously, and found that such structure: by structures such as hinge arms and hinge bracket are improved, can improve shock absorbing capability with fairly simple formation.
Summary of the invention
That is, the objective of the invention is, in vehicle front body structure, further improve being applied to the shock absorbing capability of the impact load on the engine protection cover plate.
Vehicle front body structure of the present invention is, rear portion at the frame member of the formation engine room lateral margin of front part of vehicle is equipped with hinge bracket, and can open and close with engine room on the rear portion and the side edge part of the side opening engine protection cover plate of closing hinge arms is installed, rotating hinge arms is installed on this hinge bracket, its topmost being characterised in that, hinge arms has main wall portion and cover plate assembly wall portion, described main wall portion points to roughly with its surface and the back side, and the posture of overall width direction is rotatably supported on the hinge bracket, and described cover plate assembly wall portion stretches out to overall width direction inboard from the last ora terminalis of this main wall portion, side at the engine room rear portion, cover plate back flanged lip as junction surface between cover plate back reinforcement and the dash side stretches out the limit upward to roughly vehicle fore-and-aft direction extension setting, and the main wall portion described relatively cover plate back flange that makes described hinge arms is to the overall width deviation in driction.
Adopt the present invention, when impact load is applied to from the top on the engine protection cover plate, when the engine protection cover plate is out of shape downwards, can suppress the main wall portion and the cover plate back flange of hinge arms interferes mutually, and can increase engine protection cover plate deformation stroke downwards, so can further improve shock absorbing capability.
Description of drawings
The engine protection cover plate with vehicle front body structure of Fig. 1 the invention process form unloads the block diagram (being the block diagram of corner, the rear portion under the state after engine protection cover plate or driving engine upper cover etc. is removed, in the expression engine room) of back state.
Fig. 2 is the lateral plan of the vehicle front body structure part of expression the invention process form.
Fig. 3 is the birds-eye view of the vehicle front body structure part of expression the invention process form.
Fig. 4 is the cutaway view (the A-A line cutaway view among Fig. 2) of the vehicle front body structure of the invention process form.
Fig. 5 is another cutaway view (the B-B line cutaway view among Fig. 2) of the vehicle front body structure of the invention process form.
Fig. 6 is the block diagram of the hinge bracket that vehicle front body structure comprised of the invention process form.
Fig. 7 is the diagrammatic sketch that the vehicle front body structure of the invention process form when being illustrated in impact load and acting on the engine protection cover plate produces deformation state.
The specific embodiment
Below, the example that present invention will be described in detail with reference to the accompanying.Fig. 1 is that the block diagram of the vehicle front body structure part of this example of expression (is under the state after engine protection cover plate or driving engine upper cover plate etc. is removed, the block diagram of corner, the rear portion in the expression engine room), Fig. 2 is the lateral plan of an expression vehicle front body structure part, Fig. 3 is the birds-eye view of an expression vehicle front body structure part, Fig. 4 is the cutaway view (the A-A line cutaway view among Fig. 2) of vehicle front body structure, Fig. 5 is another cutaway view (the B-B line cutaway view among Fig. 2) of vehicle front body structure, Fig. 6 is the block diagram of the hinge bracket that comprises of vehicle front body structure, and Fig. 7 is the diagrammatic sketch that vehicle front body structure produces deformation state when being illustrated in impact load and acting on the engine protection cover plate.In following example, the structure of vehicle left side only is described, for the right side, the structure of available same (left-right symmetric) realizes.In addition, FR represents the place ahead of vehicle fore-and-aft direction among the figure, and IN represents the interior side of overall width direction.
Engine protection cover plate 9 (Fig. 2) is installed on the car body by linkage, can the last side opening of engine room be closed with opening and closing.
Linkage comprises hinge bracket 6, hinge arms 1 and link pin 8 in this example.
Wherein, hinge bracket 6 can be for example waits and constitutes by steel plate being carried out bending forming, comprising: utilize bolt 13 to be fixed in cover plate back reinforcement (Japanese: the bottom wall portion 6b of 3 upper surfaces Off one De リ one ジ レ イ Application Off オ one ス); And the longitudinal wall part 6f that extends upward from the lateral margin of the overall width direction inboard of bottom wall portion 6b.
Longitudinal wall part 6f comprise upper portion 6e that direction is up and down extended and lower portion 6c and between them along with to upside and to the inboard bevelled centre portion of overall width direction 6d.That is to say that longitudinal wall part 6f sees in the front and bend to roughly S word shape, upper portion 6e with respect to lower portion 6c to the inboard deviation distance x1 (Fig. 3) of overall width direction.And link pin 8 is installed on this upper portion 6e with the posture of stretching out to the overall width direction.Hinge wall 1 is supported on the hinge bracket 6 rotationally by this link pin 8.
This hinge bracket 6 is formed with the arm 6a that slenderly rearward extends with interior side from middle part 6d, be equipped with on this arm 6a from the inboard ora terminalis of the overall width direction of wing 7 downwards with the arm 7a of interior side extension.That is to say, in this example, also adopt the fixedly carriage of wing 7 usefulness of hinge bracket 6 conducts.6g is the through hole that usefulness is installed, and 6h is the nut that usefulness is installed.
On the other hand, hinge arms 1 for example can wait and constitutes by steel plate being carried out bending forming, comprise main wall 1a of portion and the cover plate assembly wall 1b of portion, this main wall 1a of portion roughly points to the elongated extension of posture of overall width direction with its surface and the back side and is rotatably supported on the hinge bracket 6, and this cover plate assembly wall 1b of portion stretches out to overall width direction inboard from the last ora terminalis of the main wall 1a of portion.
The main wall 1a of portion has to see the part that bends to U word shape roughly from the side and be provided with linearity continuously in the place ahead of the part of U word shape roughly and partly form, and the part of U word shape is protruded downwards, interfere with other part so that when engine protection cover plate 9 is opened, avoid, the rearward end of described roughly U word shape part is supported on the hinge bracket 6 rotationally, on the other hand, the last ora terminalis that makes the linearity part forms the cover plate assembly wall 1b of portion to overall width direction inside bend.
On the cover plate assembly wall 1b of portion, be formed with two cover plate mounting hole 1c along fore-and-aft direction devices spaced apart ground, wherein, the formation of the cover plate mounting hole 1c of rear side (near a side of the link pin 8) lifting that partly raises up constitutes jut 1d.
Engine protection cover plate 9 has double-decker at installation portion at least,, with bolt 11 and nut (not shown) the cover plate assembly wall 1b of portion is fixed on the inner 9a of the cover plate of (downside, engine room one side) in this double-deck inboard.In addition, on this part, be provided with cover plate hinge reinforcement (Japanese: Off one De ヒ Application ジ レ イ Application Off オ one ス) 10, improve the rigidity of installation portion.
As mentioned above, by forming jut 1d, have the shape of ladder before and after the cover plate assembly wall 1b of portion becomes, therefore, inner 9a also becomes the shape with ladder with the cover plate of its butt.Here, the hinder marginal part of the inner 9a of cover plate tilts as shown in Figure 2, and ladder is formed on the half-way of this sloping portion.Promptly, utilize this structure, the attachment point of hinge arms 1 is located in sloping portion midway, but this position is compared with the situation of tabular surface that does not form ladder, the attachment point of hinge arms 1 is formed on the rake front side of the inner 9a of cover plate, be to be in the more position of rear (the trailing edge side of engine protection cover plate 9, i.e. a side in close link pin 8 axle center).
On the other hand, in this example, as Fig. 1 and Fig. 4, shown in Figure 5, side at the engine room rear portion, as the cover plate back flange (Japanese Off one De リ Star ジ Off ラ Application ジ) 4 at junction surface between cover plate back reinforcement 3 and the dash side 2, the limit is stretched out upward to roughly vehicle fore-and-aft direction extension setting in the limit.That is to say, dash side 2 extends setting from the side (baffle plate sidepiece) of instrument adapter plate to the engine room rear portion, and at this cover plate back flange 4, with mode such as spot welding with engage to the cover plate back reinforcement 3 that the vehicle fore-and-aft direction extends at the engine room lateral margin as frame member.The 5th, (Japanese: サ ス ペ Application シ ヨ Application ワ one), 5a is its upper surface (attachment face) to the tower that suspends.
In this example, as shown in Figure 5, (Japanese: カ ウ Le ト Star プ カ バ one) 12 side edge part is near the upside of ora terminalis on the cover plate back flange 4, and extends outside the overall width direction that is set to ora terminalis this on to be located at the driving engine upper cover of engine room rear portion top.
Here, in this example, as shown in Figure 4, the main wall 1a of portion that makes hinge arms 1 is with respect to cover plate back flange 4 deviation distance x2 outside the overall width direction, and as shown in Figure 5, with respect to the overall width direction end of driving engine upper cover 12 also to overall width direction outside deviation distance x3.
Utilize this above example, can further improve being applied to the shock absorbing capability of the impact load on the engine protection cover plate 9.
That is to say, at first as mentioned above, in this example, the main wall 1a of portion that makes hinge arms 1 with respect to cover plate back flange 4 to overall width direction (the outside) deviation distance x2.Therefore, when acting on the engine protection cover plate 9 from the top impact load, when making this engine protection cover plate 9 distortion downwards, can suppressing the main wall 1a of portion and the cover plate back flange 4 of hinge arms 1 and interfere mutually.So, can further increase engine protection cover plate 9 deformation stroke downwards, the corresponding shock absorbing capability that improves.
In this example, make overall width direction end to overall width direction outside the deviation distance x3 of the main wall 1a of portion with respect to driving engine upper cover 12 again.Therefore, when acting on the engine protection cover plate 9 from the top impact load, when this engine protection cover plate 9 is out of shape downwards, can suppresses the main wall 1a of portion and the driving engine upper cover 12 of hinge arms 1 and interfere mutually.So, can further increase engine protection cover plate 9 deformation stroke downwards, the corresponding shock absorbing capability that improves.
In addition, the main wall 1a of portion is configured in overall width direction more lateral, can with by the lateral margin of the engine protection cover plate 9 of this main wall 1a of portion supporting promptly this lateral margin and parting line 30 between wing 7 inner edges more easily be configured in outside the overall width direction, help increasing the degree of freedom in the moulding.
In this example, with respect to the position of lower portion 6c, make this longitudinal wall part 6f bending to overall width direction (inboard) deviation distance x1 at the upper portion 6e that makes longitudinal wall part 6f again.Therefore, longitudinal wall part 6f as shown in Figure 7, object 20 from above collide, just swing to easily when making engine protection cover plate 9 be subjected to impact load overall width direction (inboard) with engine protection cover plate 9.Like this, except engine protection cover plate 9 moves and can greatly guarantee the deformation stroke to oblique below, the bending to overall width direction inboard of this engine protection cover plate 9 becomes big, thereby can improve shock absorbing capability.
In this example, as mentioned above, on the cover plate assembly wall 1b of portion of hinge arms 1, be formed with convex jut 1d, on this jut 1d, engine protection cover plate 9 be installed, thus can make this jut 1d with respect to the installation site of engine protection cover plate 9 more near link pin 8.Like this, can shorten center of turn (center of link pin 8) to the length of the moment arm of engine protection cover plate 9 installation sites from engine protection cover plate 9, and can improve the bending stiffness of the cover plate assembly wall 1b of portion of hinge arms 1, so, improve the resonance frequency (characteristic oscillation number) of engine protection cover plate 9 and hinge arms 1, can reduce vibration and sound.
In this example, make elongated and crooked arm 6a elongation from longitudinal wall part 6f, wing 7 is installed on this arm 6a.Like this, when on the engine protection cover plate 9 from above when having acted on impact load, can make rigidity arm 6a greatly (elongation ground) distortion lower than longitudinal wall part 6f, can suppress the crooked restricted situation of longitudinal wall part 6f by wing 7.
In this example, as shown in Figure 7, when on the engine protection cover plate 9 from above collide with object 20, when being subjected to impact load, because hinge bracket 6 is poured overall width direction inboard into, so the main wall 1a of portion of hinge arms 1 also moves downwards along with engine protection cover plate 9, and to overall width direction medial movement distance W, but, preferably preestablish to comprise the specification at interior each several part apart from x1~x3 for the main wall 1a of portion under the state after this distortion does not interfere with cover plate back flange 4 yet.That is, each several part because of from above impact load produce the occasion of distortion, preferably constitute, be not the main wall 1a of portion of hinge arms 1, but the cover plate assembly wall 1b of portion and the cover plate assembly wall 1b of portion cover plate back flange 4 and driving engine upper cover 12 butts.
Preferable example of the present invention more than has been described, but the present invention is not limited to this, can does various distortion.For example, make both outsides of overall width direction of direction that member departs between mutually, also inboard.

Claims (5)

1. vehicle front body structure, rear portion at the frame member of the engine room lateral margin that forms front part of vehicle is equipped with hinge bracket, and can open and close with engine room on the rear portion and the side edge part of the side opening engine protection cover plate of closing hinge arms is installed, rotating described hinge arms is installed on this hinge bracket, it is characterized in that
Described hinge arms has main wall portion and cover plate assembly wall portion, described main wall portion points to roughly with its surface and the back side, and the posture of overall width direction is rotatably supported on the hinge bracket, and described cover plate assembly wall portion stretches out to overall width direction inboard from the last ora terminalis of this main wall portion
Side at the engine room rear portion, as the cover plate back flange at junction surface between cover plate back reinforcement and the dash side, the limit is stretched out upward to roughly vehicle fore-and-aft direction extension setting in the limit,
The main wall portion described relatively cover plate back flange of described hinge arms is to the overall width deviation in driction.
2. vehicle front body structure as claimed in claim 1 is characterized in that,
The side edge part of driving engine upper cover that is located at engine room rear portion top is near the last ora terminalis upside of described cover plate back flange, and ora terminalis extends to outside the overall width direction on this,
Depart to the overall width direction outside overall width direction end of the described relatively driving engine upper cover of main wall portion of described hinge arms.
3. vehicle front body structure as claimed in claim 1 is characterized in that,
Described hinge bracket has bottom wall portion and longitudinal wall part, and described bottom wall portion is fixed on the frame member, and described longitudinal wall part is extended upward from the lateral margin of the overall width direction inboard of bottom wall portion, and with the main wall portion rotatable support of described hinge arms on the top of described longitudinal wall part,
The bottom of this longitudinal wall part makes this longitudinal wall part bending to the position of overall width deviation in driction relatively on the top of described longitudinal wall part.
4. vehicle front body structure as claimed in claim 2 is characterized in that,
Described hinge bracket has bottom wall portion and longitudinal wall part, and described bottom wall portion is fixed on the frame member, and described longitudinal wall part is extended upward from the lateral margin of the overall width direction inboard of bottom wall portion, and with the main wall portion rotatable support of described hinge arms on the top of described longitudinal wall part,
The bottom of this longitudinal wall part makes this longitudinal wall part bending to the position of overall width deviation in driction relatively on the top of described longitudinal wall part.
5. as each described vehicle front body structure in the claim 1 to 4, it is characterized in that,
In the cover plate assembly wall portion of described hinge arms, be formed with convex jut, the engine protection cover plate is installed on this jut.
CNB2006101059366A 2006-07-18 2006-07-18 Vehicle front body structure Active CN100560419C (en)

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Application Number Priority Date Filing Date Title
CNB2006101059366A CN100560419C (en) 2006-07-18 2006-07-18 Vehicle front body structure

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Application Number Priority Date Filing Date Title
CNB2006101059366A CN100560419C (en) 2006-07-18 2006-07-18 Vehicle front body structure

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CN101108635A CN101108635A (en) 2008-01-23
CN100560419C true CN100560419C (en) 2009-11-18

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5364792B2 (en) * 2009-10-14 2013-12-11 本田技研工業株式会社 Body structure
WO2015053093A1 (en) * 2013-10-10 2015-04-16 日本プラスト株式会社 Cowl top cover
JP6919591B2 (en) * 2018-02-09 2021-08-18 トヨタ自動車株式会社 Vehicle front structure
JP7110674B2 (en) * 2018-03-30 2022-08-02 スズキ株式会社 Hinge arm mounting structure for vehicle front hood
CN113338735A (en) * 2020-03-03 2021-09-03 标致雪铁龙汽车股份有限公司 Hood hinge support and vehicle

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