JP3985097B2 - Automobile resin shroud panel structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin shroud panel structure of an automobile.
[0002]
[Prior art]
As a conventional technique for molding a shroud panel (radiator core support) of an automobile with a resin, there is Patent Document 1 below. As shown in FIG. 7, this includes a radiator core support upper 113 and a radiator core support lower 114 extending vertically along the vehicle width direction, and the radiator core support upper 113 and the radiator core support lower 114 are arranged in the vertical direction. The radiator core support 101 is formed by coupling with a coupling member 115 extending right and left and right coupling members 119, and a radiator opening 135 is formed with the coupling member 115 interposed therebetween.
[0003]
According to Patent Document 1, the white portions in the drawing, that is, the radiator core support upper 113 and the radiator core support lower 114 are formed of metal. The hook portions, that is, the coupling members 115 and 119 are molded and integrated together with the metal molded body with a resin. In addition, a hood lock mounting portion 116 is integrated with the resin on the upper portion of the coupling member 115. This is welded to the front portion of the radiator core support upper 113 in advance, and then the side and lower surfaces are covered with the resin. It is a thing.
[0004]
As described above, molding the shroud panel with resin has an extremely great effect on reducing the weight of the vehicle body, and can simplify a great number of processes for bending and welding the metal member, which is advantageous for cost reduction.
[0005]
However, when the shroud is molded with resin, it is necessary to suppress thermal deformation during molding, and the resin shroud panel has lower strength and rigidity compared to metal due to the nature of the resin. If the hood lock mounting portion 116 is provided on the upper 113, it is easily deformed when receiving a load when the hood is closed. In Patent Document 1, in order to prevent this deformation, the coupling member 115 is provided integrally with the resin shroud panel.
[0006]
If the connecting member 115 is only to suppress thermal deformation at the time of molding the shroud resin, it is not required to be so rigid and a thin one is sufficient. However, in order to prevent deformation when a load is applied when the hood is closed. High rigidity is required, and in Patent Document 1, a thickness equivalent to that of the radiator core support upper 113 and the radiator core support lower 114 is required in order to achieve both purposes with the coupling member 115.
[0007]
However, since vehicle parts such as radiators and condensers that are wide in the vehicle width direction are supported on the shroud panel, when such a thick coupling member is disposed at the center of the shroud panel, Vehicle parts such as radiators and condensers must be supported and arranged, so that not only a structure having a considerable thickness in the front-rear direction is obtained, but also the space where the coupling member is arranged is wasted. On the other hand, if these vehicle parts are divided and arranged on the left and right sides with the coupling member interposed therebetween, the space is excellent, but there are adverse effects such as an increase in the number of parts.
[0008]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-166848 [0009]
[Problems to be solved by the invention]
As described above, an object of the present invention is to suppress the deformation of the resin shroud panel and to lay out the cooling parts in the front-rear direction of the resin shroud panel in a compact manner.
[0010]
[Means for Solving the Problems]
The first configuration of the resin shroud panel structure for automobiles according to the present invention is such that the rear left and right ends of the bumper face disposed in the vehicle width direction at the front of the vehicle are located on the side of the vehicle via a crash tube. A bumper reinforcement connected to the front side frame is provided, and is disposed behind the bumper reinforcement, and includes a shroud upper, a shroud drawer, the shroud upper, and the shroud upper for supporting the cooling device. A resin shroud panel for an automobile in which left and right vertical members that connect both ends, and a center stay that connects the shroud upper and the center of the shroud drawer in the vehicle width direction are integrally formed,
The shroud upper is provided with a housing portion for housing a bonnet lock at the front end center, and is separate from the shroud panel for connecting the front surface of the housing portion and the bumper reinforcement at the front lower side, and is more rigid than the center stay. A high accommodation portion support stay is provided, and the center stay is formed in a thin plate shape in the vehicle front-rear direction with respect to the shroud upper and shroud drawer, and the accommodation portion has a lower surface in addition to the front surface, The front surface of the housing portion protrudes forward from the front surface of the shroud upper, the lower surface of the housing portion is part of a shelf formed to protrude forward from the lower end of the front surface portion of the shroud upper, and the upper end of the center stay is It is connected with the shelf front end lower part .
[0011]
According to the first configuration, it is possible to reliably support a high load when the hood is closed by the highly rigid accommodating portion support stay. At this time, the storage unit support stay becomes a three-dimensional member to increase rigidity, but the storage unit support stay is a member disposed so as to connect the hood lock storage unit and the bumper rain in front thereof. The layout of the vehicle parts supported by the shroud panel is not adversely affected. On the other hand, the center stay can suppress thermal deformation during molding of the resin shroud panel. Although the center stay is connected between the shroud upper and shroud drawer where the vehicle parts are arranged, it is only intended to suppress thermal deformation during molding of the resin shroud panel, so it is thin in the vehicle longitudinal direction. This makes it possible to prevent the center stay from adversely affecting the layout of the vehicle parts panel-supported by the shroud.
[0012]
In addition, the lower surface of the housing part for housing the bonnet lock is a part of a shelf part that projects forward from the lower end of the front part of the shroud upper, and the upper end of the center stay is connected to the lower part of the front end of the shelf part. Therefore, since the center stay can receive the force at the time of locking with the housing support stay from above, the support rigidity of the hood lock housing and the shroud upper can be further improved, and these deformations can be suppressed. it can.
[0013]
In the second configuration related to the present invention, an opening for introducing running wind is provided in a bumper face facing the lower part of the shroud panel, and the center stay extends upward from the front end of the shroud drawer to at least the upper end of the opening. Is a single stay and is branched into a plurality of portions above the opening and connected to the front end of the shroud upper.
[0014]
According to the second configuration, the center stay extends upward in a single state from the shroud drawer, and then branches into a plurality of branches to be connected to the shroud upper. It can be set as the shroud panel structure which is hard to produce.
[0015]
According to the second configuration, the position where the center stay branches from one to a plurality of positions is the position of the upper end of the opening provided in the bumper face, or a position above this, that is, the opening. Since there is only one center stay facing the vehicle, the traveling wind introduced from the opening can be sufficiently applied to the cooling device, and the cooling performance of the cooling device is not deteriorated.
[0016]
According to a third configuration of the present invention, a side stay connected to the vertical member is provided on the outer side of the connecting portion between the upper end of the center stay and the shroud upper.
[0017]
According to the third configuration, a side stay that connects the vertical member that connects the shroud doorper and both ends of the shroud drawer is provided from a portion on the outer side of the connecting part to which the center stay is connected to the shroud upper. Due to the structure, deformation of the vertical member with respect to the shroud upper to the front, rear, left and right is suppressed.
[0018]
【The invention's effect】
As described above, the present invention can suppress the deformation of the resin shroud panel and can lay out the cooling parts in the front-rear direction of the resin shroud panel in a compact manner.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. First, a front structure of an automobile having a resin shroud panel structure according to the present invention will be described with reference to FIG.
[0020]
In FIG. 1, a resin shroud panel 1 (hereinafter simply referred to as a shroud panel 1) is a structure in which a resin material including a reinforcing material such as glass fiber is integrally formed by injection molding. A shroud upper 1a extending in the direction, vertical members 1b, 1b extending downward from the left and right ends of the shroud upper 1a, and a shroud drawer 1c extending in the vehicle width direction by connecting the lower ends of the vertical members 1b, 1b. As a result, an opening 1k is formed. And the radiator 3 which is a cooling device is arrange | positioned and supported in the shroud panel 1 from the back side of the shroud panel 1 so that this opening part 1k may be faced (refer FIG. 5). Further, an intercooler 5 as a cooling device is also supported by a fastening member (not shown) so as to face the lower portion of the opening 1k on the front side of the shroud panel 1.
[0021]
Further, a bumper reinforcement 7 is disposed in the vehicle upper direction at the front upper part of the intercooler 5, and crash pipes 9, 9 extend rearward from the left and right ends of the bumper reinforcement 7, and at the rear end thereof. The flanges 11 and 11 are respectively provided and fastened to the front end portion of a front side frame (not shown).
[0022]
Brackets 13, 13 extending inward of the vehicle are fixed to the middle of the crush pipes 9, 9 in the front-rear direction, and are shroud using fastening holes (not indicated) provided in the brackets 13, 13. The panel 1 is fastened by fastening members (not shown) so as to support the vertical members 1b and 1b.
[0023]
Although not shown in FIG. 1, a bumper face extending in the vehicle width direction is provided at the forefront of the vehicle so that the bumper reinforcement 7 is housed inside the rear thereof. 2 is a front view showing the positional relationship among the bumper face, the shroud panel 1 and the intercooler 5 (bumper reinforcement 7 disposed in front of the shroud panel 1 and behind the bumper face. Is omitted). In FIG. 2, the shroud panel 1 is indicated by a solid line, and the intercooler 5 and the bumper face 17 are indicated by virtual lines having different intervals. As can be seen from this figure, a bumper face opening 17k extending in the vehicle width direction by an edge 17a is formed below the bumper face 17, and a grille 19 having a lattice is assembled to the bumper face opening 17k. At the same time, the intercooler 5 is arranged behind the bumper face opening 17k.
[0024]
As described above, the intercooler 5 as a cooling device can sufficiently receive the traveling wind introduced during traveling from the bumper face opening 17k formed in the bumper face 17, and has a structure with high cooling performance.
[0025]
As shown in FIG. 2, the center stay S connects the shroud upper 1 a and the shroud drawer 1 c to the opening 1 k of the shroud panel 1. That is, the center stay S is connected to the shroud drawer 1c with a lower end connected to the shroud lower 1c and a branch stay S2a that branches from the middle portion of the single stay S1 into two and connects to the shroud upper 1a. S2b is formed in a substantially Y shape, and is integrally provided as a part of the shroud panel 1.
[0026]
Specifically, the single stay S1 extends from the shroud drawer 1c to a position slightly above the upper end of the bumper face opening 17k formed in the bumper face 17. That is, the stay facing the bumper face opening 17k is one stay S1, and is connected to the branch stays S2a and S2b at a position above the bumper face opening 17k.
[0027]
Note that the cross section of the single stay S1 is substantially U-shaped by three wall portions Wa, Wb, and Wc, as can be seen from FIG. 4 showing the XX cross section in FIG. 3B showing the structure of the shroud panel 1. And a rib that connects these three wall portions Wa, Wb, and Wc with a plate shape that is extremely thin in the front-rear direction compared to the shroud upper 1a and shroud drawer 1c (see FIG. 5). R is provided in a zigzag shape along the direction in which the single stay S1 extends. Therefore, although the stay S1 is a thin member, it is a structure having high strength and rigidity. Although the cross section is not particularly shown, as can be seen from FIG. 3B, the branch stays S2a and S2b also have a U-shaped cross section and have ribs as in the single stay S1.
[0028]
As described above, the center stay S that connects the shroud upper 1a and the shroud drawer 1c in the opening 1k of the shroud panel 1 is formed in a substantially Y shape so that a thermal deformation during molding hardly occurs. Can do.
[0029]
Further, the rigidity of the center stay S itself is enhanced by the cross-sectional structure of the single stay S1 and the branch stays S2a and S2b and the substantially Y-shaped structure. Therefore, the width of these stays in a front view does not need to be as wide as shown in the prior art, and can be a thin stay. Along with this, the traveling wind introduced from the bumper face opening 17k can strike a wide area against the radiator 3 which is a cooling device supported by the shroud panel 1, so that the radiator 3 Therefore, the thermal deformation of the shroud panel 1 can be avoided.
[0030]
Next, a more detailed structure of the shroud panel 1 will be described. 3A is a plan view of the shroud panel 1, FIG. 3B is a front view of the shroud panel 1, and FIG. 5 is a YY sectional view of FIG. 3B.
[0031]
The present invention is provided with side stays S3a and S3b for connecting the shroud upper 1a and the vertical member 1b in addition to the center stay S composed of the single stay S1 and the branch stays S2a and S2b described above.
[0032]
As shown in FIG. 3B, the upper end of the side stay S3a is connected to the portion where the upper end of the branch stay S2a is adjacent to the outer side than the portion connected to the shroud upper 1a, and the lower end is vertically It is connected to the member 1b.
[0033]
Similarly, the upper end of the side stay S3b is connected to a portion adjacent to the outer side of the portion where the upper end of the branch stay S2b is connected to the shroud upper 1a, and the lower end is connected to the vertical member. Therefore, the side stay S3a and the side stay S3b are substantially C-shaped when viewed from the front.
[0034]
As described above, the shroud upper 1a and the vertical members 1b, 1b extending downward from the left and right ends thereof are connected by the side stays S3a, S3b, respectively, so that the vertical members 1b, 1b with respect to the shroud upper 1a are front and rear and left and right. The deformation of is suppressed.
[0035]
Next, the detailed structure of the shroud upper 1a will be described. As shown in FIGS. 3A and 3B, the shroud upper 1a includes an upper surface 1u, a shroud upper front 1d that extends downward from the front end of the upper surface 1u, and a shroud upper front 1d. A shelf 1e extending forward from the lower end, and a housing 1f for housing a bonnet lock (not shown) at the center of the shroud upper 1a in the vehicle width direction are integrated with the shroud upper 1a. Is formed.
[0036]
Here, the accommodating portion 1f includes a shroud upper front portion 1d, left and right projecting surface portions 1t, 1t projecting forward from the shroud upper front portion 1d, and a front end portion of the projecting surface portions 1t, 1t. It is a space formed by 1g and the housing lower surface 1h sharing a part of the shelf 1e.
[0037]
Specifically, as shown in FIG. 5, the shelf 1 e extends forward from the lower end of the shroud upper front portion 1 d and then hangs downward at the front end of the shelf 1 e. 1j, and the concave portion of the substantially U-shaped portion is provided with a rib R having an upper and lower zigzag shape when viewed from the front, and has a structure with high strength and rigidity (FIGS. 3B and 6). reference).
[0038]
As described above in detail, the upper end of the branch stay S2b, which is the upper portion of the center stay S, is connected to the front lower end of the shelf portion 1e, which is a part of the shroud upper 1a. On the other hand, the lower end of the stay S1, which is the lower part of the center stay S, is connected to the front part of the shroud drawer 1c.
[0039]
Further, as can be seen from FIG. 5, the center stay S has a plate shape that is extremely thin in the front-rear direction compared to the shroud upper 1 a and the shroud drawer 1 c, so that the radiator 3 and the intercooler 5, which are cooling devices, are arranged at the front and rear of the shroud panel 1. In the supporting structure, a compact layout that does not take an unnecessary width can be realized.
[0040]
Subsequently, a detailed description will be given of the housing portion 1f for housing the bonnet lock. FIG. 6 is a perspective view illustrating a storage unit support stay that connects the storage unit and the bumper reinforcement.
[0041]
As shown in FIG. 6, a notch portion 1 m directed downward is provided on the accommodating portion front surface 1 g of the accommodating portion 1 f for accommodating the bonnet lock, and this notched portion 1 m is provided with a bonnet lock (not shown). ) For receiving a bonnet side engaging member (not shown) for engaging with the hood.
[0042]
On the other hand, an extended surface portion 7a extending substantially horizontally toward the rear is fixed to an upper portion of a substantially central portion in the vehicle width direction of the bumper reinforcement 7, and further, the accommodating portion support stay 15 (the shroud panel 1) is fixed to the extended surface portion 7a. A bumper reinforcement side fixing portion 15a provided integrally at the lower end of a separate member is fixed by a fastening member (not shown).
[0043]
The accommodating portion support stay 15 extends from the bumper reinforcement side fixing portion 15a while being inclined rearward and upward (see FIG. 1), and the upper end thereof is fixed to the accommodating portion front surface 1g by a fastening member (not shown). The side fixing member 20 is welded and fixed at the X portion in the figure.
[0044]
Specifically, the accommodating portion-side fixing member 20 has left and right fastening surface portions 20a and 20a that are fastened to the accommodating portion front surface 1g, and a protruding surface portion 20b that projects forward by connecting the fastening surface portions 20a and 20a. The upper end of the stay 15 is welded and fixed by the protruding surface portion 20b.
[0045]
In this way, the accommodating portion front surface 1 g is connected to the bumper reinforcement 7 via the accommodating portion support stay 15. Therefore, even if the bonnet is lowered from above so as to be engaged with the hood lock and a downward force is applied to the housing front surface 1g or the housing lower surface 1h, the housing front surface 1g forming the housing portion 1f supports the housing portion. Since it is supported by the bumper reinforcement 7 via the stay 15, the downward deformation is suppressed.
[0046]
In addition, although the deformation | transformation to the downward direction of the accommodating part 1f when a bonnet is engaged with a bonnet lock is comparatively slight, the center stay S which has connected the shelf part 1e of the shroud doorper 1a and the shroud drawer 1c. It is also suppressed by support.
[0047]
As mentioned above, although embodiment related to this invention was described, this invention is not limited to this, The number of the branch stays which comprise a center stay may be two or more, and an intercooler is directly under a radiator. A structure may be provided.
[Brief description of the drawings]
FIG. 1 is an exploded view of a front structure of an automobile according to the present invention. FIG. 2 is a front view showing a positional relationship between a bumper face, a shroud panel, and an intercooler. FIG. 3 is a plan view and a front view of a shroud panel. 4 is a sectional view taken along line XX in FIG. 3B. FIG. 5 is a sectional view taken along line YY in FIG. 3B. FIG. 6 is a perspective view of a storage unit support stay that connects the storage unit and bumper reinforcement. FIG. 7 is a diagram showing the prior art.
DESCRIPTION OF SYMBOLS 1 ... Resin shroud panel 1a ... Shroud doorper 1b ... Vertical member 1c ... Shroud drawer 1d ... Shroud door front part 1e ... Shelf part 1f ... Storage part 1g ... Storage unit front surface 1h ... Storage unit lower surface 3 ... Radiator (cooling device)
5 ... Intercooler (cooling device)
7 ... Bumper reinforcement 15 ... Housing support stay 17 ... Bumper face 17k ... Bumper face opening S ... Center stay S1 ... Single stay (center stay)
S2a, S2b ... Branch stay (center stay)
S3a, S3b ... Side stay

Claims (3)

A bumper reinforcement is provided behind the bumper face disposed in the vehicle width direction at the front part of the vehicle, with the left and right rear ends connected to the front side frame on the side of the vehicle via a crash pipe. A shroud upper, a shroud drawer, a left and right vertical member that connects both ends of the shroud upper and the shroud lower, and the shroud upper and the shroud lower are disposed behind the force and support the cooling device. A center stay that connects substantially the center in the vehicle width direction, and a resin shroud panel for an automobile that is integrally molded,
The shroud upper is provided with a housing portion for housing a bonnet lock at the front end center, and is separate from the shroud panel for connecting the front surface of the housing portion and the bumper reinforcement at the front lower side, and is more rigid than the center stay. A high housing support stay is provided, and the center stay is formed in a thin plate shape in the vehicle front-rear direction with respect to the shroud upper and shroud drawer ,
The housing portion has a lower surface in addition to the front surface, the front surface of the housing portion projects forward from the front surface of the shroud upper, and the lower surface of the housing portion is a shelf portion that projects forward from the lower end of the front portion of the shroud door upper. A resin resin shroud panel structure for an automobile, wherein the upper end of the center stay is connected to the lower part of the front end of the shelf .   In Claim 1, an opening for introducing running wind is provided in the bumper face facing the lower side of the shroud panel, and the center stay extends upward from the front end of the shroud drawer to at least the upper end of the opening. A resin shroud panel structure for an automobile, characterized in that a single stay is formed, and a plurality of branches are provided above the opening and connected to the front end of the shroud upper.   3. The resin shroud panel structure for an automobile according to claim 2, wherein a side stay connected to the vertical member is provided outside the connecting portion between the upper end of the center stay and the shroud upper.

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