JP7402423B2 - Vehicle air guide structure - Google Patents

Description

The present invention relates to a vehicle air guide structure that is attached to the back side of a front bumper and guides cooling air taken in from an air intake port of the front bumper to a heat exchanger or the like.

There is an air guide structure for a vehicle that can prevent the air guide from acting as a rigid body by releasing the fixation between the air guide and the radiator support side at the time of a vehicle collision (see Patent Document 1).

Japanese Patent Application Publication No. 2007-131245

However, according to the above-mentioned prior art document, in the above structure, the rigidity of the air guide is maintained because it is prevented from acting as a rigid body by releasing the fixation of the air guide from the radiator support side. If the fixation release to the radiator support side does not work, it may cause a failure when the air guide collides with the heat exchanger. Further, the heat exchanger is fixed to the fixed part of the radiator support, and if an impact is applied, the heat exchanger and the fixed part may collide and the heat exchanger may be damaged.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air guide structure for a vehicle that can prevent damage to a heat exchanger located at the rear of the vehicle by using a shock absorbing structure using an air guide structure.

In order to solve the above-mentioned problems, the present invention provides an air guide structure for a vehicle that is located behind an air intake port of a front bumper and is disposed on the front bumper. A heat exchanger is disposed, an air guide is disposed between the front bumper and the heat exchanger, and the air guide has an air guide main body portion located in front of the air guide. , an extending wall extending from the air guide main body toward the heat exchanger, the extending wall facing the heat exchanger and capable of abutting against the heat exchanger. a contact portion that supports the contact portion, a vertical wall portion provided at the front portion of the contact support portion and extending in the vehicle vertical direction, and the vertical wall portion and the contact support portion; a curved part connecting the supporting part, a load absorbing part is formed by the vertical wall part and the curved part, and a load absorbing part is provided on the vehicle front side of the load absorbing part. A front wall portion is provided that extends from the wall portion toward the front of the vehicle.

When a load in the longitudinal direction of the vehicle is input to the extending wall portion, the load is concentrated on the load absorbing portion because the load absorbing portion is provided at the base of the extending wall portion. When a load is concentrated on the load absorbing portion, the extending wall portion is displaced in the front-rear direction to absorb the load from the load absorbing portion. This prevents damage to the heat exchanger and other equipment.

FIG. 1 is a perspective view showing an air guide structure for a vehicle according to an embodiment of the present invention, and showing an air guide provided on the back side of a front bumper. 2 is a partially enlarged view of an air guide showing the air guide structure of FIG. 1. FIG. 3 is an enlarged view showing an enlarged portion of the air guide structure in FIG. 2. FIG. FIG. 4 is a view of the lower curved portion of FIG. 3 viewed from the front side of the vehicle body. FIG. 4 is a side view of the lower curved portion of FIG. 3 viewed from the side. FIG. 4 is a perspective view of the upper curved portion of FIG. 3 viewed from below on the front side of the vehicle body. FIG. 4 is a perspective view of the upper curved portion of FIG. 3 viewed from below. 5 is a sectional view taken along the line XX in FIG. 4. FIG. 5 is a sectional view taken along the line YY in FIG. 4. FIG.

Embodiments of the present invention will be described in detail below with reference to the drawings.
1 to 9 show an air guide structure for a vehicle according to an embodiment of the present invention, and FIGS. 1 to 3 show an air guide provided on the back side of a front bumper. 4 to 9 are enlarged views of each part of the air guide.

1 to 3, an air guide 2 is provided on the rear side of a front bumper 1 at a position corresponding to an air intake port 1a such as a grill. This air guide 2 is arranged between the front bumper 1 and a heat exchanger 3, such as a radiator, arranged on the rear side of the vehicle body of the front bumper 1, as shown in FIG. The air guide 2 has upper and lower, left and right frame members 2a, 2b, 2c, and 2d provided with mounting portions for attaching to the front bumper 1 via screws, etc., and the frame members 2a, 2b, 2c, and 2d are partitioned vertically and horizontally. A plurality of partition walls 2e and 2f are provided to form a plurality of notch holes 20.

The air guide 2 has the notch hole 20 formed in the center thereof for sending cooling air to the heat exchanger 3, etc., which is provided along the vehicle width direction so as to correspond to the air intake port 1a of the front bumper 1. The air guide main body part 21, a pair of partition walls 2f provided on the upper side of the air guide main body part 21 with a fixed interval in the vertical direction and protruding rearward, and a space between the pair of partition walls 2f. and an extending wall portion 22 provided to protrude toward the rear of the vehicle body.
As shown in FIG. 2, the pair of partition walls 2f are upper partition walls 2f1 that are provided on the upper side of the air guide main body 21 and protrude rearward so as to face each other at a constant interval in the vertical direction. and a middle partition wall 2f2.
The extending wall portion 22 is located between the upper partition wall 2f1 and the middle partition wall 2f2, is supported by the partition walls 2f1 and 2f2, and extends toward the rear of the vehicle where the heat exchanger 3 is disposed. It is configured to extend so as to face the heat exchanger 3. A notch hole 20a serving as an air intake port is formed in the air guide main body portion 21 provided with the extending wall portion 22 on the front side of the extending wall portion 22. The extending wall base is formed of a connecting member consisting of a curved portion 23c and a vertical wall portion 24c that are connected to the upper partition wall 2f1 or the middle partition wall 2f2.

As shown in FIG. 3, the extending wall portion 22 extends toward the heat exchanger 3 disposed in the engine room on the rear side of the vehicle body of the front bumper 1, and faces the heat exchanger 3. At the rear end, a strip-shaped abutting surface portion 22a extending in the vertical direction is provided at the rear end edge of the side wall surface 22b. As shown in FIGS. 6 and 7, a strip-shaped upper wall surface 22c is provided at the upper end of the contact surface portion 22a and extends toward the front of the vehicle body along the upper edge of the side wall surface 22b. 22c is divided into two parts from the middle, and is provided with an edge 22c1 along the side wall surface 22b and an upper contact surface support portion 22c2 extending away from the side wall surface 22b. A notch hole 20a1 is formed between the edge portion 22c1 and the contact surface support portion 22c2. Note that the contact surface here refers to a portion that is arranged so as to be able to come into contact with the heat exchanger when an impact is input.
The edge portion 22c1 along the side wall surface 22b is connected to the vertical wall portion 24c1 rising upward via a curved portion 23c1 whose front end portion is curved upward, and is connected to the lower surface of the partition wall 2f1. The upper contact surface support portion 22c2 extending away from the side wall surface 22b is connected to a vertical wall portion 24c2 that rises upward via a curved portion 23c2 whose front end is curved upward. It is connected to the lower surface of the partition wall 2f1.
That is, the upper contact surface support portion 22c2 is provided with an extending wall base portion having a load absorbing portion A1 that continues from the contact surface support portion 22c2 to the curved portion 23c2 and the vertical wall portion 24c2.

As shown in FIG. 7, a reinforcing bead-shaped front wall portion 25c2 extending toward the front of the vehicle body is provided at the front upper end of the vertical wall portion 24c2. This front wall portion 25c2 is sloped upward toward the front so that the height gradually decreases (height H2 decreases) toward the front of the vehicle body from the position of the front end of the vertical wall portion 24c2 on the lower surface of the partition wall 2f1. It has been extended.

Further, as shown in FIG. 4, a belt-shaped lower wall surface 22d is provided at the lower end of the contact surface portion 22a and extends toward the front of the vehicle body along the lower edge of the side wall surface 22b. is separated into two parts from the middle, and is provided with an edge 22d1 along the side wall surface 22b and a lower contact surface support part 22d2 extending away from the side wall surface 22b.
The edge portion 22d1 along the side wall surface 22b is connected to the upper end portion of the vertical wall portion 24d1 rising upward from below via a curved portion 23d1 whose front end portion is curved downward, and is connected to the upper surface of the partition wall 2f1. has been done. The lower contact surface support part 22d2, which extends away from the side wall surface 22b, has a front end curved downward via a curved part 23d2, and the upper end part of the vertical wall part 24d2 rises upward from below. and is connected to the upper surface of the partition wall 2f2. A notch hole 20a2 is formed between the edge portion 22d1 and the contact surface support portion 22d2.

The lower contact surface support portion 22d2 is connected to the upper end of the vertical wall portion 24d2 via a curved portion 23d2, as shown in FIGS. 4 and 5. This vertical wall portion 24d2 is formed longer than the length of the vertical wall portion 24c2 to which the upper contact surface support portion 22c2 is connected. This is because the lower contact surface support portion 22d2 absorbs the load from the contact surface portion 22a, so the lower contact surface support portion 22d2, the curved portion 23d2, and the vertical wall portion 24d2 are configured to be weak. It is designed to act as a starting point for bending, and is constructed to effectively absorb loads. That is, at the base end portion of the lower contact surface support portion 22d2, a load absorbing portion A2 is provided which continues from the contact surface support portion 22d2 to the curved portion 23d2 and the vertical wall portion 24d2.

As shown in FIG. 5, a bead-shaped reinforcing front wall portion 25d2 extending toward the front of the vehicle body is provided at the front lower end of the vertical wall portion 24d2. The height of this front wall portion 25d2 gradually decreases along the upper surface of the partition wall 2f2 from the position of the lower front end of the vertical wall portion 24d2 toward the front of the vehicle body (so that the height H1 becomes smaller). Extended at an angle.

Next, the operation of the above embodiment will be explained with reference to FIG.
FIG. 9 shows the back side of the front bumper 1, where the side wall surface 22b of the air guide 2 prevents heat from a heat source E such as engine parts from going around to the front of the heat exchanger 3 as shown by the arrow. There is. On the other hand, the cold air C entering the engine room from the air intake port of the front bumper 1 hits the heat exchanger 3 without mixing with the heat source E and remains cool due to the side wall surface 22b of the air guide 2, thereby cooling the heat exchanger 3. I do.
At this time, for example, if a load is applied from the front of the vehicle body and the front bumper 1 is pushed and moved rearward, the air guide 2 attached to the back surface of the front bumper 1 also moves toward the rear of the vehicle body. Then, the extending wall portion 22 provided on the air guide 2 so as to protrude toward the rear of the vehicle body also moves toward the rear of the vehicle body. At this time, the contact surface section 22a provided on the extending wall section 22 comes into contact with the front surface of the heat exchanger 3 and is locked, thereby preventing the front bumper 1 and the air guide 2 from moving toward the rear of the vehicle body.
If the load from the front of the vehicle body is larger than necessary, there is a risk that the heat exchanger 3 will be damaged by the contact of the contact surface portion 22a. At this time, since the extending wall portion 22 has a lower vertical wall portion 24d2 longer than the upper vertical wall portion 24c2 and is configured to be weak, the contact surface support portion 22d2, the curved portion 23d2, the vertical Since the load absorbing portion A2 that continues with the wall portion 24d2 is provided, the curved portion 23d2 and the vertical wall portion 24d2 serve as starting points for bending in the lower contact surface support portion 22d2, and absorb the load from the front of the vehicle body. .

In this way, when a load in the longitudinal direction of the vehicle is input to the extending wall portion 22, the load absorbing portion A (A1, A2) is provided at the base of the extending wall portion 22. Load is concentrated. When a load is concentrated on the load absorbing portion A, the extending wall portion 22 is displaced in the front-rear direction so that the load is absorbed by the load absorbing portion A. This can prevent damage to the heat exchanger 3 and other equipment.

The extending wall portion 22 of the air guide 2 is provided with a contact surface portion 22a facing toward the rear of the vehicle body, and a contact surface support portion 22d2 that supports the corresponding contact surface portion 22a. Between the corresponding contact surface support portion 22d2 and the air guide main body portion 21, there is a vertical wall portion 24d2 provided in the air guide main body portion 21 in the vehicle vertical direction, and a vertical wall portion 24d2 between the vertical wall portion 24d2 and the contact surface support portion 21. The load absorbing portion A2 is provided with a curved portion 23d2 that connects the load absorbing portion A2 with the curved portion 23d2. Further, a front wall portion 25d2 is provided that extends from the vertical wall portion 24d2 toward the front of the vehicle. In this way, by having the vertical wall part 24d2 at the base and the front wall part 25d2 extending from the vertical wall part 24d2 in the front direction of the vehicle, it is possible to improve the rigidity of the front wall part 25d2 in the front-rear direction. This makes it easier to concentrate the load on the curved portion 23d2, which has low rigidity, and improves the load absorption effect of the contact surface portion 22a.

The contact surface support portions 22c2 and 22d2 are provided to extend diagonally forward of the vehicle from the upper and lower positions of the contact surface portion 22a, respectively, and are provided vertically from the extending ends via curved portions 23c2 and 23d2, respectively. Since the contact surface support portions 22c2, 22d2 are arranged in the vertical direction of the vehicle from the contact surface portion 22a, heat exchange is possible when the contact surface support portions 22c2, 22d2 are arranged in the vertical direction of the vehicle from the contact surface portion 22a. It is possible to maintain the direction in which the contact surface portion 22a faces the container 3.

The upper and lower curved portions 23c2, 23d2 connected from the contact surface support portions 22c2, 22d2 to the upper and lower vertical wall portions 24c2, 24d2 have a longer length of the lower curved portion 23d2, and absorb the load on the lower side. Since the portion A2 is configured to be weaker than the load absorbing portion A1 on the upper side, it can be controlled so that it becomes the starting point of bending when a load is applied.

A notch hole 20a is provided in the air guide main body portion 21 on the front side of the extending wall portion 22, the abutting surface portion 22a is provided so as to be located on the notch hole 20a side, and the extending wall portion Since notch holes 20a1 and 20a2 are provided on the side of the contact surface support parts 22c2 and 22d2 of 22, the curved parts 23c2 and 23d2 and the vertical wall parts 24c2 and 24d2 become fragile parts, so that when a load is concentrated, It can be the starting point of the bend.

The present invention is not limited to the above-described embodiment. For example, although the extending wall portion 22 of the air guide 2 is provided at only one location on the air guide body portion 21, it may be provided at multiple locations. Further, the air guide body 2 may be formed by resin molding, or may be made of lightweight metal such as aluminum. The load absorbing portion A may be formed integrally or may be formed separately. It goes without saying that other modifications may be made as appropriate without changing the technical scope of the present invention.

1 Front bumper 2 Air guide 2a, 2b, 2c, 2d Frame member 2e, 2f Partition wall 2f1 Upper part partition wall 2f2 Middle part partition wall 20 Notch hole 21 Air guide main body part 22 Extending wall part 22a Contact surface part 22b Side wall surface 22c Upper wall surface 22d Lower wall surface 22c1, 22d1 Edge portion 22c2, 22d2 Contact surface support portion 23c1, 23d1 Curved portion 23c2, 23d2 Curved portion 24c1, 24d1 Vertical wall portion 24c2, 24d2 Vertical wall portion 25c2, 25d2 Front wall portion A, A1 , A2 Load absorption part

Claims (4)

In a vehicle air guide structure located behind an air intake port of a front bumper and disposed in the front bumper,
A heat exchanger is disposed on the rear side of the front bumper in the longitudinal direction of the vehicle, and an air guide is disposed between the front bumper and the heat exchanger,
The air guide is
an air guide body located at the front of the air guide;
an extending wall extending from the air guide main body toward the heat exchanger;
The extending wall portion is
a contact part that faces the heat exchanger and can come into contact with the heat exchanger;
a contact support part that supports the contact part;
a vertical wall portion provided at the front portion of the contact support portion and extending in the vehicle vertical direction;
a curved portion connecting the vertical wall portion and the abutting support portion;
A load absorbing portion is formed by the vertical wall portion and the curved portion,
An air guide structure for a vehicle, wherein a front wall portion extending from the vertical wall portion toward the front of the vehicle is provided on the front side of the vehicle of the load absorbing portion. The contact support portion is provided to extend diagonally forward of the vehicle from each of the upper and lower positions of the contact portion,
2. The air guide structure for a vehicle according to claim 1, wherein front ends of the abutting support portions at each of the upper and lower positions are connected to the vertical wall portion via the curved portion. Among the respective curved portions at the upper and lower positions, the length of the lower curved portion in the vertical direction is longer than that of the upper curved portion, and the load absorbing portion on the lower side is different from the load absorbing portion on the upper side. The air guide structure for a vehicle according to claim 2, which is configured to be more fragile than the air guide structure. The air guide has a plurality of notch holes,
The air guide structure for a vehicle according to any one of claims 1 to 3, wherein at least one of the plurality of notches is provided in the curved portion.

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