JP2006088735A - Front bumper structure of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front bumper structure of an automobile for preventing deterioration of external appearance of an air dam skirt mounting part and enhancing cooling performance of a radiator, while having a structure for stably supporting a front bumper face lower part by a rigid member on the rear side. <P>SOLUTION: This structure is provided with an air dam skirt supporting member 10 separate from a bumper face. The air dam skirt supporting member 10 is a member that an air dam skirt supporting part main body 20 for supporting an air dam skirt, a vehicle body mounting part 30 fastened to the rigid member and a hinge part 15 for connecting the main body 20 and the mounting part 30 are integrally molded. The air dam skirt supporting part main body 20 is provided with a bumper face fastening part 14 and an air guide part 11 for leading traveling air to an upper rear side. The vehicle body mounting part 30 is constituted to be connected to the air dam skirt supporting part main body 20 in a state in which the air dam skirt supporting member 10 is folded back to a rear side with the hinge part 15 as a fulcrum from a state in which the air dam skirt supporting member 10 is integrally molded. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a front bumper structure for an automobile, and more particularly, to a vehicle equipped with an air dam skirt that projects downward from a front bumper face.

  2. Description of the Related Art Conventionally, a technique for providing an air dam skirt that protrudes downward from the lower end of a front bumper face (hereinafter also simply referred to as a bumper face) is known for reducing the air resistance of an automobile. Usually, a flexible rubber or the like is selected as the material of the air dam skirt so that it does not easily break even if it comes into contact with an obstacle on the road surface. For example, when the air dam skirt is configured to be directly supported on the lower end surface of the bumper face, the following problem occurs. In other words, in the general support structure, the upper end surface of the air dam skirt and the lower end surface of the bumper face are joined at a plurality of points in the vehicle width direction. Deflection may occur between points. This bending is not preferable in appearance because it appears as a gap between the bumper face and the air dam skirt when the automobile is viewed from the front.

  In view of this, a technique is considered in which this gap cannot be seen. For example, in Patent Document 1, a substantially horizontal rib is provided slightly above the lower end surface of the back surface of the bumper face, and the upper end portion of the air dam skirt is supported by this rib. In this way, even if a slight gap is generated between the rib and the air dam skirt, the gap is hidden under the bumper face, thereby preventing appearance deterioration.

On the other hand, in order to improve the support rigidity of the bumper face, the lower part of the bumper face is supported by a rear rigid member. For example, Patent Document 2 discloses a structure in which a front lower cross member is provided as a rigid member extending in the vehicle width direction at the rear of the lower part of the bumper face, and the support rigidity of the bumper face is increased by fastening them through a bracket. Has been.
Japanese Utility Model Publication No. 6-63482 JP 2001-58580 A

  However, there is a problem that it is difficult to achieve both the structure as in Patent Document 1 and the structure as in Patent Document 2. This is because when the structure as in Patent Document 1 is adopted, the lower end of the bumper face is blocked by the air dam skirt and cannot be extended rearward. If the lower end of the bumper face cannot be extended rearward from the air dam skirt, it cannot be fastened to a rigid member such as a front lower cross member.

  For example, in Patent Document 1, a mounting opening is provided near the lower end of a bumper body (corresponding to a bumper face), an air dam skirt is passed through the mounting opening, and the air dam skirt is attached to a rib projecting substantially horizontally from the back of the bumper body. The structure is shown. In order to make this structure compatible with the above-described structure of Patent Document 2, it seems that it is only necessary to extend the rear part from the mounting opening of the bumper body and fasten it with a rigid member such as a front lower cross member. However, in reality, the part behind the mounting opening is connected only to the part ahead of the mounting opening and the narrow part outside both ends in the vehicle width direction of the mounting opening, and the continuity as a member is almost cut off. -ing That is, even if the portion behind the mounting opening is extended and fastened to a rigid member such as a front lower cross member, it does not effectively support the lower portion of the bumper body.

  On the other hand, according to the recent demands for higher engine output and smaller and lighter vehicles, it is also important to improve the cooling performance of the radiator. For this reason, a front bumper structure that can guide the traveling wind to the radiator side more efficiently has been demanded.

  In view of the circumstances as described above, the present invention has a structure in which the lower portion of the front bumper face is stably supported by the rigid member behind the front bumper face, and the attachment portion of the air dam skirt is not directly visible in front view. It is an object of the present invention to provide a front bumper structure for an automobile that can prevent deterioration and further improve the cooling performance of a radiator.

  In the front bumper structure of the automobile of the present invention for solving the above problems, an air dam skirt projecting downward from the front bumper face is attached in the vicinity of the lower end of the front bumper face, and the lower part of the front bumper face is used as a rigid member behind the front bumper face. The front bumper structure of the automobile to be supported includes an air dam skirt support member that is separate from the front bumper face and supports the air dam skirt, and the air dam skirt support member includes an air dam skirt mounting portion for attaching the air dam skirt. An air dam skirt support portion body fastened to the bumper face, a vehicle body attachment portion fastened to the rigid member, and a flexible hinge portion connecting the air dam skirt support portion body and the vehicle body attachment portion. A body-molded member, the air dam skirt support portion main body includes a plurality of bumper face fastening portions arranged at a predetermined interval in the vehicle width direction in order to fasten the air dam skirt support portion main body and the bumper face. It is provided between each bumper face fastening part and spaced apart from the front bumper face, and includes an air guide part that guides the running wind upward and backward, and the hinge part is provided near the upper end of the air dam skirt support part body, The vehicle body mounting part is folded back from the state where the air dam skirt support member is integrally formed to the rear of the air dam skirt support part body with the hinge part as a fulcrum, and in the folded state to the air dam skirt support part body. It is characterized by being connected.

  In this configuration, the bumper face fastening portion is provided in the vicinity of the tip of a substantially box-shaped box portion that protrudes forward from the air guide portion, and the upper surface of the box portion is open on the front side. The rear side may be closed.

  Further, the rigid member is a shroud panel that supports a radiator, and wind shielding ribs that protrude forward are provided at both ends in the vehicle width direction of the air guide portion so as to block the traveling wind toward the upper and rear sides. You may comprise so that the connection part of the air dam skirt support part main body and the said vehicle body attachment part turned over may be provided in the back surface vicinity of the said wind-shielding rib.

  In addition, the front-back, left-right, up-down directions in this specification point out the direction seen from the driver | operator who seated in the driver's seat. That is, the vehicle width direction is synonymous with the left-right direction. Further, the front view means a state viewed from a viewpoint facing the front end of the vehicle.

  According to the front bumper structure of an automobile of the present invention, the lower part of the bumper face and the rigid member (for example, shroud panel) behind the bumper face are effectively fastened via the air dam skirt support member, thereby improving the support rigidity of the bumper face. Can be increased. Further, it is possible to prevent the appearance from deteriorating by hiding the mounting portion of the air dam skirt attached to the air dam skirt support member under the air dam skirt support member so as not to be seen in front view.

  Furthermore, since the air dam skirt support member includes an air guide portion that guides the traveling wind to the upper and rear sides where the radiator is disposed, heat exchange between the cooling water and the traveling wind can be efficiently performed in the radiator. That is, the cooling performance of the radiator can be enhanced.

  By the way, when it is going to manufacture this air dam skirt support member with a synthetic resin etc., in order to suppress an increase in cost and weight, it is desirable to shape | mold into a thin plate shape. In addition, in order to ensure the necessary rigidity, it is effective to provide a closed cross-section portion in a side view between the air dam skirt support portion main body and the vehicle body attachment portion. However, since it is difficult to integrally form a member having such a closed cross-sectional portion, according to the conventional general manufacturing method, first, the air dam skirt support portion body and the vehicle body attachment portion are respectively formed as separate parts, After that, the structure that combines them is taken.

  However, such a structure may increase the number of parts and reduce productivity.

  Therefore, in the configuration of the present invention, a hinge portion is provided in the vicinity of the upper end of the air dam skirt support portion main body, and the vehicle body attachment portion is formed by connecting to the hinge portion. In this way, the schematic shape of the air dam skirt support member when viewed from the side can be easily integrally formed as a shape in which the air dam skirt support body and the vehicle body attachment portion are connected substantially linearly. . Then, after the molding, the closed body section can be formed by folding the vehicle body attachment portion backward with the flexible hinge portion as a fulcrum and coupling the air dam skirt support body and the vehicle body attachment portion.

  Thus, it is possible to obtain a continuous integrated product by being configured to be folded back at the hinge portion while having a shape in which the closed cross-sectional portion is provided to increase the rigidity. As a result, an increase in the number of parts can be minimized, and a decrease in productivity can be suppressed.

  Further, if this air dam skirt support member is provided with a substantially box-shaped box portion that is open on the upper surface front side and closed on the rear side of the upper surface, and provided with a bumper face fastening portion at the tip thereof, a rigidity can be obtained. The bumper face can be fastened at a high portion, and the support rigidity can be increased.

  Moreover, by opening the upper surface of the box portion, it is possible to assemble a fastener for fastening with the bumper face through the opening portion, so that assembly workability is good and productivity can be improved. It should be noted that the lowering of the upper surface is limited to only the front side, and the rear side is closed, thereby effectively suppressing a decrease in air guide performance and support rigidity.

  Further, if the shroud panel that supports the radiator is used as the rigid member to which the air dam skirt support member is fastened, sufficient support rigidity can be obtained.

  And by providing wind-shielding ribs projecting forward so as to block the traveling wind toward the upper and rear sides at both ends in the vehicle width direction of the air guide part, unnecessary air (passes outside the radiator even if introduced, It is possible to prevent an increase in air resistance due to the introduction of air that does not contribute to improving the cooling performance.

  The portion provided with the wind shielding rib has high rigidity. The rigidity of the air dam skirt support member can be further increased by configuring the connecting portion between the air dam skirt support portion main body and the folded vehicle body attachment portion in the vicinity of the back surface of the wind shield rib. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view of a front bumper structure 1 for an automobile according to an embodiment of the present invention. A front bumper face (hereinafter abbreviated as a bumper face 3), which is an outer plate integrally formed with a bumper, is provided below the bonnet 2 at the front end of the automobile. An opening is provided near the lower center of the bumper face 3 in the vehicle width direction, and a front under grill 4 is fitted therein. The front under grill 4 is formed in a mesh shape, and the outside air can be introduced into the engine room from the outside by this mesh structure.

  A thin plate-like air dam skirt 6 made of a relatively flexible material such as rubber is provided at a position facing the road surface further below the lower end of the bumper face 3. The air dam skirt 6 is provided so as to protrude downward from the bumper face 3 over substantially the entire width in the vehicle width direction, and both ends of the air dam skirt 6 run sideways along the outer shape of the bumper face 3. The air dam skirt 6 is supported by an air dam skirt support member 10 separate from the bumper face 3 as will be described later.

  FIG. 2 is a perspective view of the air dam skirt support member 10 as viewed obliquely from the front. FIG. 3 is a perspective view of the air dam skirt support member 10 as viewed obliquely from the rear. Since the air dam skirt support member 10 has a bilaterally symmetric shape, both FIG. 2 and FIG. 3 show only the left half (right half in front view).

  The air dam skirt support member 10 is a member that supports the air dam skirt 6 and fastens the bumper face 3 and a shroud panel 60 (see FIG. 4A) that is a rigid member behind the bumper face 3. Furthermore, it is also a member which guides the air introduced from below the bumper face 3 to the radiator 50 (see FIG. 4A) supported by the shroud panel 60.

  The air dam skirt support member 10 is an integrally molded product made of PP (polypropylene). As shown in FIGS. 2 and 3, the air dam skirt support member 10 includes a hinge portion 15 that includes an air dam skirt support portion main body 20 positioned at the front and a vehicle body mounting portion 30 provided at the rear and in the vicinity of both ends in the vehicle width direction. It has a schematic structure that is connected by.

  The air dam skirt support portion main body 20 mainly includes an air guide portion 11, a box portion 12, a center rib 17, a wind shield rib 18, and an air dam skirt mounting portion 19a (see FIG. 5).

  The air guide portion 11 is a portion forming the main shape of the air dam skirt support body 20, and forms a slope that rises from the lower front to the upper rear over substantially the entire width of the air dam skirt support body 20. The lower end portion of the air guide portion 11 is folded back (see FIG. 4A).

  The box portion 12 is a substantially box-shaped portion that protrudes forward from the air guide portion 11. In the present embodiment, three box portions 12 on one side are formed at intervals (air guide portions 11 are provided at the intervals). A bumper face fastening portion 14 (through hole) for fastening to the back side of the bumper face 3 is provided at the front end portion of each box portion 12. The upper part of each box part 12 is opened at the front side to form a box opening part 13, while the rear side near the slope of the air guide part 11 is closed.

  The center rib 17 is a rib that protrudes forward from the air guide portion 11 at the center in the vehicle width direction and extends in the vertical direction.

  The wind shield ribs 18 are ribs that protrude forward from the air guide portion 11 at both ends in the vehicle width direction (portions further outside the outermost box portion 12), and extend substantially in the horizontal direction. The base end side is a wind shield rib base end portion 18a (see FIG. 7) having a substantially U-shaped cross section in a side view. The wind shield rib 18 and the wind shield rib base end portion 18 a are provided so as to be positioned above the lower end of the bumper face 3.

  The air dam skirt mounting portion 19a is a portion that directly supports the air dam skirt 6. This will be described later with reference to FIG.

  Next, the vehicle body attachment portion 30 of the air dam skirt support member 10 will be described. As shown in FIG. 3, the vehicle body attachment portion 30 is provided at the rear of the air dam skirt support main body 20, and extends substantially horizontally from the lower end to the rear at a vertical portion 30 a that is a plate-like body erected substantially vertically. It consists of the horizontal part 30b of a plate-shaped body. A plurality of reinforcing ribs 34 are provided upright at the boundary between the vertical portion 30a and the horizontal portion 30b. The upper end of the vertical portion 30 a is connected to the upper end of the air dam skirt support body 20 through the hinge portion 15.

  The vertical portion 30 a is coupled to the back side of the air dam skirt support body 20 at the coupling portions 31 and 32. Further, shroud panel fastening portions 35a and 35b (through holes) for fastening with the shroud panel 60 are provided near the rear end of the horizontal portion 30b.

  The hinge portion 15 is a portion that connects the upper end portion of the air dam skirt support portion main body 20 and the upper end portion of the vertical portion 30 a of the vehicle body attachment portion 30. The hinge portion 15 is thinner and flexible than the other portions, and has a so-called PP hinge structure.

  4 is a cross-sectional view taken along the line V-V in FIGS. 1 and 2, (a) shows an in-vehicle state, and (b) particularly shows the air dam skirt support member 10 alone. As shown in FIG. 4A, the air guide portion 11 is provided behind the bumper face 3 so as to be separated. The front end of the air guide portion 11 is located below the lower end of the bumper face 3 with a gap.

  The vertical portion 30 a of the vehicle body attachment portion 30 is coupled to the back side of the air dam skirt support body 20 by a fastener 31 a at the coupling portion 31. By this connection, a closed cross-section portion is formed by the air guide portion 11 and the vertical portion 30a.

  The horizontal portion 30b of the vehicle body attachment portion 30 extends to the lower side of the rear shroud panel 60, and is fastened to the lower surface of the shroud panel 60 by a fastener 61 at the shroud panel fastening portion 35a. Although not particularly shown, the shroud panel fastening portion 35b is also fastened to the lower surface of the rash shroud panel 60 in the same manner.

  The shroud panel 60 is provided with a radiator 50 for exchanging heat of the engine coolant. The radiator 50 is provided near the center in the vehicle width direction when viewed from the front (a range on the inner side of the air shield rib 18 in the air dam skirt support body 20).

  FIG. 4B shows a single cross-sectional shape of the air dam skirt support member 10, and the shape shown by the two-dot chain line in this figure is the shape when the air dam skirt support member 10 is molded. That is, the air dam skirt support member 10 is molded in the shape shown by the two-dot chain line, and then the vehicle body attachment portion 30 is folded back (indicated by an arrow) with the hinge portion 15 as a fulcrum. The rear surface side of the main body 20 and the vehicle body mounting portion 30 are combined.

  FIG. 5 is a cross-sectional view taken along the line IV-IV in FIGS. 1 and 2 and shows a cross-sectional shape in the vicinity of the box portion 12. As shown in the figure, the back side of the bumper face 3 extends near the box portion 12 and abuts against the front end portion of the box portion 12. In the bumper face fastening portion 14, the bumper face 3 and the box portion 12 are fastened by a fastener 16. Although not particularly illustrated, the bumper face 3 and the bumper face fastening portion 14 are similarly fastened by fasteners 16 in the other box portions 12.

  In addition, an air dam skirt mounting portion 19a is provided on the rear surface of the air dam skirt support body 20 slightly above the lower end surface so as to protrude substantially horizontally. The air dam skirt mounting portion 19a is provided at each box portion 12 installation location. The air dam skirt 6 has a substantially L-shaped cross section in a side view as shown in the figure, and includes a vertical portion 6b that constitutes a substantially vertical plate surface that protrudes from below the air dam skirt support body 20, and a vertical portion 6b. It consists of a horizontal portion 6a extending substantially horizontally rearward from the upper end. The horizontal portion 6a is coupled to the air dam skirt mounting portion 19a by a fastener 19b.

  6 is a cross-sectional view taken along line III-III in FIGS. 1 and 2, and shows a cross-sectional shape in the vicinity of the center rib 17. As shown in this figure, the center rib 17 is a hollow rib protruding forward from the air guide portion 11. Further, in the vicinity of the center rib 17, a gap for introducing air is provided between the bumper face 3 and the air dam skirt support body 20.

  FIG. 7 is a cross-sectional view taken along the line VI-VI in FIGS. 1 and 2 and shows a cross-sectional shape in the vicinity of the wind shielding rib 18 and the coupling portion 32. As shown in this figure, the wind-shielding rib base end portion 18a and the wind-shielding rib 18 protrude forward from the middle of the air guide portion 11 that rises from the lower front to the upper rear. A rod-like coupling protrusion 32a is provided so as to protrude from the back of the wind shield rib 18 to the rear. The coupling protrusion 32 a is engaged with the vertical portion 30 a at the coupling portion 32 of the vehicle body attachment portion 30 that is folded back by the hinge portion 15. Thus, a closed cross-section portion is formed in a side view by the wind shield rib base end portion 18a having a substantially U-shaped cross section, the vertical portion 30a of the vehicle body attachment portion 30, and the coupling protrusion 32a.

  Next, the operation of the front bumper structure 1 of an automobile will be described mainly focusing on the operation of the air dam skirt support member 10. The main function of the air dam skirt support member 10 is to support the air dam skirt 6, to fasten the bumper face 3 and the shroud panel 60, and to guide the air to the radiator 50.

  First, the support of the air dam skirt 6 will be described. As shown in FIG. 5, the air dam skirt mounting portion 19 a supports the air dam skirt 6 such that the vertical portion 6 b of the air dam skirt 6 protrudes below the air dam skirt support body 20. Since the vertical portion 6b of the air dam skirt 6 suppresses the inflow of the traveling wind between the vehicle bottom surface and the road surface, the air resistance during traveling is reduced. Further, since the air dam skirt 6 is a flexible material, even if the vertical portion 6b comes into contact with an obstacle on the road surface, it is not easily damaged.

  Since the air dam skirt mounting portion 19a is provided on the rear surface of the air dam skirt support main body 20 slightly above the lower end surface, the connecting portion between the air dam skirt mounting portion 19a and the air dam skirt 6 is the air dam skirt support main body 20. It is hidden by the folded part of the front and cannot be seen in front view. That is, even if some bending occurs in the horizontal portion 6a of the air dam skirt 6 between the adjacent fasteners 19b, the appearance does not deteriorate.

  Next, fastening of the bumper face 3 and the shroud panel 60 will be described. The air dam skirt support member 10 is fastened to the lower back side of the bumper face 3 at the bumper face fastening portion 14 as shown in FIG. 5, and is shroud at the shroud panel fastening portions 35a and 35b as shown in FIG. Fastened to the lower surface of the panel 60. That is, the lower part of the bumper face 3 is supported by the shroud panel 60 via the air dam skirt support member 10.

  The overall rigidity of the air dam skirt support member 10 is enhanced regardless of the plate-shaped molded product made of PP. That is, in the air dam skirt support body 20, the rigidity is enhanced by the center rib 17, the box portion 12, the wind shield rib base end portion 18 a and the wind shield rib 18, and the rigidity is enhanced by the reinforcing rib 34 in the vehicle body attachment portion 30. It has been. Further, in the coupling portions 31 and 32 for coupling the air dam skirt support body 20 and the vehicle body attachment portion 30, the rigidity is enhanced by forming a closed cross section as shown in FIGS. Further, as shown in FIG. 7, since the coupling portion 32 is provided on the back side of the air dam skirt support body 20 whose rigidity is enhanced by the wind shield ribs 18, the rigidity of the air dam skirt support member 10 is further enhanced. It has been.

  The lower part of the bumper face 3 is supported by the shroud panel 60 which is a rigid member via the air dam skirt support member 10 having a high rigidity as described above, so that a high support rigidity is obtained.

  Next, the wind guide to the radiator 50 will be described. First, in the air guide portion 11, the first traveling wind W <b> 1 is introduced from the gap between the lower end of the bumper face 3 and the front end of the air guide portion 11, as indicated by a white arrow in FIGS. 2 and 4A. . The first traveling wind W <b> 1 is guided upward and backward along the slope of the air guide portion 11. On the other hand, the second traveling wind W2 is introduced from the front under grille 4. The first traveling wind W1 and the second traveling wind W2 merge and are guided to the radiator 50 supported by the shroud panel 60 at the rear. And in the radiator 50, since heat exchange with the 1st driving | running | working wind W1 and the 2nd driving | running | working wind W2 and cooling water is made | formed effectively, the outstanding cooling performance is obtained.

  On the other hand, in the vicinity of the center rib 17, as shown by the white arrow in FIG. 6, the introduced first traveling wind W <b> 1 is once blocked by the center rib 17, but it wraps around to the air guide part 11 side on both sides. Guided backwards. Note that the side wall of the center rib 17 also has a rectifying action that restricts the first traveling wind W1 from flowing in a disordered manner in the vehicle width direction. Although not particularly illustrated, the side wall of the box portion 12 also has the same rectifying action.

  In the vicinity of the wind shield rib 18, the first traveling wind W 1 that has been introduced and started to climb the slope of the air guide portion 11, as shown by the white arrow in FIG. 18 is blocked. The vicinity of both ends of the air dam skirt support body 20 provided with the wind shield ribs 18 is outside the radiator 50 in a front view. Therefore, even if the first traveling wind W1 is introduced, there are few advantages, and the air resistance is increased unintentionally. Therefore, the first traveling wind W1 is blocked by the wind blocking ribs 18 to prevent the air resistance from increasing.

  The wind shield rib 18 is hidden under the bumper face 3 in a front view. Therefore, when viewed from the front, the slope of the air guide portion 11 continues to appear at the location where the wind shield ribs 18 are installed, and the appearance is improved.

  Next, the productivity of the automobile front bumper structure 1 will be described focusing on the air dam skirt support member 10. As shown in FIGS. 4B and 7, the air dam skirt support member 10 is formed in a shape indicated by a two-dot chain line in the drawing. The shape indicated by the two-dot chain line is a shape in which the air dam skirt support body 20 and the vehicle body mounting portion 30 are connected substantially linearly, and is easily punched in the front-rear direction (the left-right direction in the illustrated state). be able to. Therefore, it can be easily integrally formed. And after shaping | molding, the hinge part 15 is made into the fulcrum, the vehicle body attaching part 30 is turned back, and the closed cross-sectional shape is formed. That is, although it is a highly rigid member having a closed cross-sectional shape, an increase in the number of parts is suppressed by using an integrally molded product, and a decrease in productivity is prevented.

  Further, as shown in FIG. 5, when the bumper face 3 and the box part 12 are fastened in the bumper face fastening part 14, the box opening part 13 is provided on the upper part of the box part 12, and therefore, it is indicated by an arrow in the figure. Thus, the fastener 16 can be inserted from here and fastened easily. That is, the workability of fastening the bumper face 3 and the box portion 12 is good, and the productivity is enhanced.

  Moreover, the box opening 13 is provided on the front side near the bumper face fastening portion 14, and the rear side near the air guide portion 11 is closed. This effectively prevents the traveling wind guided to the air guide part 11 from flowing into the inside of the box part 12 via the box opening 13 (that is, coming out to the back side of the air dam skirt support body 20). Has been. Further, the reduction in the rigidity improvement effect of the box portion 12 by the box opening 13 is suppressed to the minimum.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications may be made within the scope of the claims. For example, the material of the air dam skirt support member 10 is not necessarily PP. However, PP is resistant to repeated bending among synthetic resins and has high hinge characteristics. Therefore, PP is advantageous in that it is easy to ensure the strength of the hinge portion 15.

  The hinge portion 15 does not need to be continuously provided over the entire width of the vehicle body attachment portion 30 as in the present embodiment, and may have a shape cut out partially or intermittently.

  The center rib 17 is not necessarily provided. Moreover, you may change suitably the position and number of the box part 12 and the center rib 17. FIG.

  The fastening destination of the shroud panel fastening portions 35a and 35b is not necessarily the shroud panel 60, and may be a suitably rigid member that can ensure the necessary support rigidity.

1 is a schematic front view of a front bumper structure of an automobile according to an embodiment of the present invention. It is the perspective view seen from the diagonal front of the air dam skirt support member. It is the perspective view seen from the slanting back of an air dam skirt support member. It is the VV sectional view taken on the line of FIG. 1, and shows the cross-sectional shape of an air guide part vicinity. (A) shows a vehicle-mounted state, and (b) shows an air dam skirt support member alone. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1 and shows a cross-sectional shape near the box portion. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Automobile front bumper structure 3 Front bumper face 6 Air dam skirt 10 Air dam skirt support member 11 Air guide part 12 Box part 14 Bumper face fastening part 15 Hinge part 18 Wind shield rib 19a Air dam skirt attachment part 20 Air dam skirt support part body 30 Car body attachment Part 32 Coupling part 50 Radiator 60 Shroud panel (rigid member)

Claims (3)

In an automobile front bumper structure in which an air dam skirt projecting downward from the front bumper face is attached in the vicinity of the lower end of the front bumper face, and the lower part of the front bumper face is supported by a rigid member behind the front bumper face.
The front bumper face is separate from the air dam skirt support member for supporting the air dam skirt,
The air dam skirt support member includes an air dam skirt mounting portion for attaching the air dam skirt, and an air dam skirt support portion body fastened to the bumper face, a vehicle body mounting portion fastened to the rigid member, and the air dam skirt support portion. A flexible hinge part that connects the main body and the vehicle body mounting part is an integrally molded member,
The air dam skirt support body includes a plurality of bumper face fastening parts arranged at a predetermined interval in the vehicle width direction to fasten the air dam skirt support part and the bumper face, and each bumper face fastening part. An air guide part that is provided apart from the front bumper face and guides the traveling wind upward and backward;
The hinge portion is provided near the upper end of the air dam skirt support body,
The vehicle body mounting portion is folded from the state in which the air dam skirt support member is integrally formed to the rear of the air dam skirt support portion main body with the hinge portion as a fulcrum, and in the folded state, the air dam skirt support portion main body. A front bumper structure of an automobile characterized by being coupled to the vehicle. The bumper face fastening portion is provided near the tip of a substantially box-shaped box portion that protrudes forward from the air guide portion, respectively.
2. A front bumper structure for an automobile according to claim 1, wherein the upper surface of the box portion is open on the front side and closed on the rear side. The rigid member is a shroud panel that supports the radiator,
Wind shield ribs that protrude forward are provided at both ends in the vehicle width direction of the air guide portion so as to block the traveling wind toward the upper and rear sides,
3. A front bumper structure for an automobile according to claim 1, wherein a connecting portion between the air dam skirt support portion main body and the folded vehicle body attachment portion is provided in the vicinity of the back surface of the wind shield rib.

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