JP7468248B2 - Vehicle front structure - Google Patents

Description

The present invention relates to a front structure of a vehicle.

Patent document 1 discloses an air guide for directing air from a grill opening to an air conditioner condenser.

JP 2004-197636 A

In the invention described in Patent Document 1, the air guide member prevents the wind from the grill opening from bypassing the condenser and radiator.

However, when the vehicle is moving, the airflow from the grill opening is not directed to the rear of the air guide member. This causes the air temperature behind the air guide member to become high.

In this way, if the air temperature behind the air guide member in the engine compartment becomes high, the engine intake temperature will rise, causing a decrease in engine output, or the air temperature of the parts in the engine compartment will rise, causing deterioration of the parts.

The present invention was made in consideration of these technical issues, and aims to provide a front structure for a vehicle that can guide the wind generated by the vehicle while it is traveling behind the air guide.

According to one aspect of the present invention, the front structure of a vehicle is provided with an air guide that is disposed rearward of the opening of the front bumper and has a guide surface that guides air to the radiator. The air guide is characterized by having a first ventilation opening that is disposed so as to penetrate the air guide from the guide surface and that guides air to the opening of the intake duct of the engine, and a second ventilation opening that is disposed so as to penetrate the air guide below the first ventilation opening on the guide surface and that guides air to the rear of the engine.

According to this aspect, by providing the first ventilation opening and the second ventilation opening, the running wind can be guided to the rear of the air guide, and the rise in the air temperature behind the air guide in the engine room can be suppressed. This makes it possible to suppress the decrease in engine output caused by the rise in the engine intake temperature, and to suppress the deterioration due to heat of parts arranged behind the engine in the engine room.

FIG. 1 is a perspective view of the air guide of the present embodiment. FIG. 2 is a top view of the front structure of the vehicle according to the present embodiment. FIG. 3 is a side view of the front structure of the vehicle according to the present embodiment. FIG. 4 is a rear view of the front structure of the vehicle according to this embodiment. FIG. 5 is an enlarged view of the vicinity of the opening of the front bumper. FIG. 6A is a front view showing a portion of the air guide. FIG. 6B is a rear view showing a portion of the air guide. FIG. 7 is a partially enlarged front view of the vicinity of the first ventilation opening and the second ventilation opening of the air guide. FIG. 8 is a partially enlarged rear view of the vicinity of the first ventilation opening and the second ventilation opening of the air guide. FIG. 9 is a cross-sectional view of the air guide taken along line IX-IX in FIG. FIG. 10 is a cross-sectional view of the air guide taken along line XX in FIG.

The following describes an embodiment of the present invention with reference to the attached drawings.

Figure 1 is a perspective view of the front structure of a vehicle 100 to which the air guide 4 of this embodiment is attached. Figure 2 is a top view of the front structure of a vehicle 100 to which the air guide 4 of this embodiment is attached. Figure 3 is a side view of the front structure of a vehicle 100 to which the air guide 4 of this embodiment is attached. Figure 4 is a rear view of the front structure of a vehicle 100. In the following description, the front of the vehicle 100 in the traveling direction is referred to as "front" and the rear of the vehicle 100 in the traveling direction is referred to as "rear". In addition, the X-axis in each figure indicates the front-to-rear direction of the vehicle 100, the Y-axis indicates the vehicle width direction of the vehicle 100, and the Z-axis indicates the up-down direction of the vehicle 100.

As shown in Figures 1 to 3, the vehicle 100 has a front structure including an engine 1, a radiator 2, a front bumper 3, and an air guide 4.

Engine 1 is an internal combustion engine that uses gasoline, diesel, etc. as fuel, and its rotation speed, torque, etc. are controlled based on commands from a controller (not shown). The output from engine 1 is transmitted to drive wheels (not shown) through a drive shaft 10 provided at the lower rear of engine 1.

As shown in Figures 1 and 3, the opening 11a of the intake duct 11 of the engine 1 opens at the front upper part of the engine 1. A resonator 12 is connected midway through the intake duct 11 to reduce intake pulsation generated by the air flow in the intake duct 11. The resonator 12 is installed below the opening 11a of the intake duct 11 so as to extend vertically along the front surface of the engine 1.

The radiator 2 exchanges heat between the cooling water, which has been heated by cooling the engine 1, and the wind (air) while the vehicle is running, and dissipates the heat of the cooling water. The radiator 2 and the engine 1 are connected by hoses 2a and 2b (see FIG. 2). A flow path for circulating the cooling water is formed by a flow path (not shown) provided in the engine 1, the hose 2a, a flow path (not shown) provided in the radiator 2, and the hose 2b.

The air guide 4 is attached to the radiator 2 so as to be located behind the opening 3a of the front bumper 3 (see Figure 3). The air guide 4 has a guide surface 4a on the front side for guiding the traveling wind (air) that flows in from the opening 3a of the front bumper 3 to the radiator 2. The air guide 4 has the function of guiding the traveling wind (air) that flows in from the opening 3a of the front bumper 3 along the guide surface 4a to the radiator 2.

As shown in FIG. 1, the air guide 4 is provided to surround the outer periphery of the front surface of the radiator 2. The air guide 4 is also provided to surround the outer periphery of the opening 3a of the front bumper 3. This allows the running wind (air) that flows in from the opening 3a of the front bumper 3 to be efficiently guided to the radiator 2. The specific configuration of the air guide 4 will be described in detail later.

As shown in Figures 2 to 4, the vehicle 100 further includes an undercover 5 that covers the underside of the engine 1. The undercover 5 is formed of a thin metal or resin plate. As shown in Figures 3 and 4, the undercover 5 is attached to a frame (not shown) so as to provide a gap S between the undercover 5 and the underside of the engine 1.

Next, the specific configuration of the air guide 4 will be described with reference to Figures 1 to 10.

As shown in FIG. 1, the air guide 4 has a first guide portion 41 located above the radiator 2, a second guide portion 42 located to the left of the radiator 2 when viewed from the front of the vehicle 100, and a third guide portion 43 located to the right of the radiator 2 when viewed from the front of the vehicle 100.

A through hole 44 through which the bumper reinforcement 6 (see Figure 3) passes is provided near the vertical center of each of the second guide portion 42 and the third guide portion 43.

As shown in Figures 5 and 6, below the second guide section 42, a first ventilation opening 50 is provided so as to penetrate the air guide 4 from the guide surface 4a and guide the running wind (air) to the opening 11a of the intake duct 11, and a second ventilation opening 60 is provided so as to penetrate the air guide 4 below the first ventilation opening 50 on the guide surface 4a and guide the running wind (air) to the rear of the engine 1.

As shown in Figures 1, 3 and 6, the first ventilation opening 50 and the second ventilation opening 60 are provided below the bumper reinforcement 6 (through hole 44) in the second guide portion 42.

The first ventilation opening 50 is provided at a position facing the opening 3a of the front bumper 3 (see FIG. 5) and at a position facing the resonator 12 (see FIG. 1 to FIG. 3). The first ventilation opening 50 is also provided at a position corresponding to the opening 11a of the intake duct 11 in the vehicle width direction (see FIG. 2).

As shown in Figures 5 and 7, the first ventilation opening 50 consists of a number of holes 50a arranged in the vertical and width directions of the vehicle 100. The holes 50a are formed so that their opening areas are approximately equal to each other. In this embodiment, the first ventilation opening 50 is formed so that the number of upper holes 50a is greater than the number of lower holes 50a in the vertical direction of the vehicle 100. Specifically, the multiple holes 50a are arranged in two upper and lower rows (three in the upper row and two in the lower row).

The second ventilation opening 60 is provided at a position facing the opening 3a of the front bumper 3 (see FIG. 5) and at a position facing the gap S between the engine 1 and the undercover 5 (see FIG. 3). The second ventilation opening 60 is also provided at a position in the vehicle width direction corresponding to the drive shaft boot 10a of the drive shaft 10 and the oil pan 13 of the engine 1 (see FIG. 4).

As shown in Figures 5 and 7, the second ventilation opening 60 consists of a number of holes 60a arranged in the vertical and width directions of the vehicle 100. The holes 60a are formed so that the opening areas are approximately equal to each other. In this embodiment, the second ventilation opening 60 is formed so that the number of holes 60a on the lower side is greater than the number of holes 60a on the upper side in the vertical direction of the vehicle 100. Specifically, the multiple holes 60a are arranged in three rows (two in the upper row, five in the middle row, and five in the lower row) on the upper and lower sides.

As shown in FIG. 5, at least the bottom row L1 of the holes 60a in the second ventilation opening 60 is hidden by the front bumper 3 when viewed from the front of the vehicle 100. In other words, the holes 60a are also provided in positions that are hidden by the front bumper 3 when viewed from the front of the vehicle 100.

As shown in FIG. 8, the air guide 4 has multiple guide plates 70 that extend rearward from the rear surface 4b opposite the guide surface 4a toward the rear of the vehicle 100.

The guide plate 70 includes a first guide plate 70a arranged to separate the first ventilation opening 50 and the second ventilation opening 60 into upper and lower sections, a pair of second guide plates 70b arranged to sandwich the first ventilation opening 50 in the vehicle width direction, and a pair of third guide plates 70c arranged to sandwich the second ventilation opening 60 in the vehicle width direction.

The first guide plate 70a protrudes from the rear surface 4b of the air guide 4 toward the rear of the vehicle 100 and is provided so as to extend horizontally between the first ventilation opening 50 and the second ventilation opening 60. The first guide plate 70a is flat and provided integrally with the air guide 4. The first guide plate 70a separates the air flow that has passed through the first ventilation opening 50 from the air flow that has passed through the second ventilation opening 60.

The second guide plate 70b and the third guide plate 70c are formed so as to protrude from the rear surface 4b of the air guide 4 toward the rear of the vehicle 100. Furthermore, the second guide plate 70b and the third guide plate 70c are provided so as to extend in the vertical direction so as to sandwich the first ventilation opening 50 and the second ventilation opening 60, respectively. The second guide plate 70b and the third guide plate 70c are provided in a flat plate shape and integral with the air guide 4. In this embodiment, one end of the second guide plate 70b and the third guide plate 70c is connected to the first guide plate 70a. In other words, the first guide plate 70a, the second guide plate 70b, and the third guide plate 70c are formed so as to be integral with each other.

As shown in Figures 7 and 8, the vicinity of the first ventilation opening 50 and the second ventilation opening 60 in the air guide 4 is composed of a plurality of flat plate-like planar portions 42b, 42c, and 42d that are inclined toward each other. A ridge line 42g is formed at the connection portion 42e where the planar portion 42b and the planar portion 42c are connected. A ridge line 42h is formed at the connection portion 42f where the planar portion 42c and the planar portion 42d are connected. A ridge line 42j is formed at the connection portion 42i where the planar portion 42b and the planar portion 42d are connected. In this embodiment, the ridge lines 42g, 42h, and 42j refer to the straight-line portions of the connection portions 42e, 42f, and 42i.

Next, we will explain the air flow passing through the first ventilation opening 50 and the second ventilation opening 60, and the function of the first ventilation opening 50 and the second ventilation opening 60.

As shown in FIG. 3 and other figures, while the vehicle 100 is traveling, the traveling wind (air) that flows into the engine room R from the opening 3a of the front bumper 3 hits the guide surface 4a of the air guide 4 and is guided to the radiator 2. In addition, a portion of the traveling wind (air) that hits the air guide 4 passes through the first ventilation opening 50 and the second ventilation opening 60 and is guided to the rear of the air guide 4.

As shown by the arrows in FIG. 3, the traveling wind (air) that passes through the first ventilation opening 50 collides with the resonator 12 and is guided upward. As described above, the first ventilation opening 50 is provided at a position in the vehicle width direction that corresponds to the opening 11a of the intake duct 11, so that the traveling wind (air) that collides with the resonator 12 and is guided upward is drawn into the engine 1 through the opening 11a of the intake duct 11.

If the first ventilation opening 50 is not provided in the air guide 4, the engine 1 will draw in air that is stagnant in the engine compartment R. This air may be hot due to the exhaust heat from the engine 1, and if the engine 1 draws in such hot air, there is a risk of a drop in output.

In contrast, the air guide 4 of this embodiment is equipped with the first ventilation opening 50, so that the running wind (air) guided from the opening 11a of the intake duct 11 can be taken into the engine 1. This makes it possible to suppress an increase in the intake temperature of the engine 1 and suppress a decrease in the output of the engine 1.

As described above, the second ventilation opening 60 is provided at a position in the vehicle width direction that corresponds to the gap S between the underside of the engine 1 and the undercover 5, so that the traveling wind (air) that passes through the second ventilation opening 60 is guided to the gap S as shown by the arrow in FIG. 3. Furthermore, the traveling wind (air) that is guided to the gap S is guided to the rear of the engine 1 after passing through the gap S.

When the wind (air) guided into the gap S passes through the gap S, it cools the oil in the oil pan 13 (see Figures 3 and 4) located at the bottom of the engine 1. It is then guided around the drive shaft boot 10a located at the rear of the engine 1 (see Figure 4).

The drive shaft boot 10a is made of polymeric materials such as resin and rubber, and is therefore susceptible to the effects of heat. Because air tends to stagnate behind the engine 1, the air around the drive shaft boot 10a is likely to become hot due to the exhaust heat from the engine 1. If the air guide 4 does not have a second ventilation port 60, the air that has become hot due to the exhaust heat from the engine 1 will stagnate around the drive shaft boot 10a, which may accelerate the deterioration of resin and rubber parts such as the drive shaft boot 10a.

In contrast, the air guide 4 of this embodiment is equipped with a second ventilation port 60, so that the running wind (air) guided from the opening 11a of the intake duct 11 can be guided to the rear of the engine 1 through the gap S. This prevents air from stagnating behind the engine 1 and prevents the air temperature behind the engine 1 from rising, thereby preventing deterioration of plastic and rubber parts such as the drive shaft boot 10a due to heat.

The air guide 4 of this embodiment also includes a first guide plate 70a that is provided to separate the first ventilation opening 50 and the second ventilation opening 60 into upper and lower sections. By providing the first guide plate 70a in this manner, the air flow that has passed through the first ventilation opening 50 and the air flow that has passed through the second ventilation opening 60 can be separated. This allows the running wind (air) that has passed through the first ventilation opening 50 to be more reliably guided to the opening 11a of the intake duct 11 provided above the engine 1, and the running wind (air) that has passed through the second ventilation opening 60 to be more reliably guided below and behind the engine 1 through the gap S.

Furthermore, the air guide 4 of this embodiment is provided with a pair of second guide plates 70b and a pair of third guide plates 70c. By providing such second guide plates 70b and third guide plates 70c, the straightness of the air that passes through the first ventilation opening 50 and the second ventilation opening 60 is ensured, and more air can be guided to the opening 11a of the intake duct 11 and below and behind the engine 1.

As mentioned above, the first ventilation opening 50 and the second ventilation opening 60 are each composed of multiple holes 50a, 60a. Increasing the number of holes 50a, 60a increases the amount of air guided to the rear of the engine 1. However, increasing the number of holes 50a, 60a may result in a decrease in aerodynamic performance.

Therefore, in the air guide 4 of this embodiment, the holes 50a of the first ventilation openings 50 are arranged so that the number of holes 50a on the upper side is greater. This makes it possible to increase the amount of air guided upward while suppressing the impact on aerodynamic performance.

In addition, in a front view, the impact on aerodynamic performance is small in a position hidden by the front bumper 3 (see FIG. 5). Therefore, in the air guide 4 of this embodiment, the holes 60a are provided in such a position (at least the bottom row L1 of the holes 60a in the second ventilation port 60). This makes it possible to increase the amount of air guided to the rear of the engine 1 while suppressing the impact on aerodynamic performance.

Furthermore, since the first ventilation hole 50 and the second ventilation hole 60 are formed by a plurality of holes 50a, 60a, the strength of the air guide 4 is reduced. Therefore, by forming a part of the connection parts 42e, 42f, 42i (ridge lines 42g, 42h, 42j) to cross the first ventilation hole 50 and the second ventilation hole 60, the strength in the vicinity of the first ventilation hole 50 and the second ventilation hole 60 can be increased compared to when the first ventilation hole 50 and the second ventilation hole 60 are formed on the same plane.

The air guide 4 configured as above provides the following effects:

By providing the first ventilation opening 50 and the second ventilation opening 60, the air guide 4 can guide the running wind (air) to the rear of the air guide 4, and can suppress an increase in the air temperature behind the air guide 4 in the engine room R. This can suppress a decrease in the output of the engine 1 caused by an increase in the intake temperature of the engine 1, and can also suppress deterioration due to heat of parts (e.g., the drive shaft boot 10a) located behind the engine 1 in the engine room R.

The air guide 4 of this embodiment also includes guide plates 70 (first guide plate 70a, second guide plate 70b, and third guide plate 70c). This ensures that the air passing through the first ventilation opening 50 and the second ventilation opening 60 flows in a straight line, and allows more air to be guided to the opening 11a of the intake duct 11 and below and behind the engine 1.

The configuration, operation, and effects of the embodiment of the present invention configured as described above are summarized below.

The front structure of the vehicle 100 is provided with an air guide 4 that is provided rearward of the opening 3a of the front bumper 3 and has a guide surface 4a that guides air to the radiator 2. The air guide 4 is provided with a first ventilation opening 50 that is provided to penetrate the air guide 4 from the guide surface 4a and guides air to the opening 11a of the intake duct 11 of the engine 1, and a second ventilation opening 60 that is provided to penetrate the air guide 4 below the first ventilation opening 50 on the guide surface 4a and guides air to the rear of the engine 1.

In this configuration, by providing the first ventilation opening 50 and the second ventilation opening 60, the running wind (air) can be guided to the rear of the air guide 4, and the rise in the air temperature behind the air guide 4 in the engine room R can be suppressed. This makes it possible to suppress a decrease in the output of the engine 1 caused by an increase in the intake temperature of the engine 1, and also to suppress deterioration due to heat of parts (e.g., drive shaft boot 10a) arranged behind the engine 1 in the engine room R.

In the front structure of the vehicle 100, a resonator 12 connected to the intake duct 11 is provided behind the first ventilation opening 50, and the opening 11a of the intake duct 11 is provided above the resonator 12.

In this configuration, the air that passes through the first ventilation opening 50 collides with the resonator 12 and then flows toward the opening 11a of the intake duct 11. This allows the intake temperature of the engine 1 to be lowered, thereby preventing a decrease in the output of the engine 1.

In the front structure of the vehicle 100, the first ventilation opening 50 is composed of a number of holes 50a arranged in a line in the vertical and width directions of the vehicle 100, and the multiple holes 50a constituting the first ventilation opening 50 are formed so that the opening areas are approximately equal to each other, and so that the number of upper holes 50a is greater than the number of lower holes 50a in the vertical direction of the vehicle 100.

Increasing the number of holes 50a in the first ventilation opening 50 affects aerodynamic performance, so there is a limit to the number of holes 50a in the first ventilation opening 50. Therefore, by increasing the number of holes 50a on the upper side, it is possible to minimize the effect on aerodynamic performance while increasing the amount of air guided upward.

In the front structure of the vehicle 100, the second ventilation opening 60 is provided to face the gap S between the engine 1 and the undercover 5 that covers the underside of the engine 1.

In this configuration, the traveling wind (air) that passes through the second ventilation opening 60 is guided to the gap S between the underside of the engine 1 and the undercover 5, so that the oil stored in the oil pan 13 provided on the underside of the engine 1 can be cooled. In addition, the traveling wind (air) that passes through the gap S flows to the rear of the engine 1. This makes it possible to prevent high-temperature air from accumulating behind the engine 1.

In the front structure of the vehicle 100, a drive shaft boot 10a is provided behind the gap S to cover a portion of the drive shaft 10 that transmits power from the engine 1 to the drive wheels.

In this configuration, the air that passes through the second ventilation opening 60 is guided to the rear of the engine 1 through the gap S between the underside of the engine 1 and the undercover 5. This makes it possible to suppress an increase in the air temperature around the drive shaft boot 10a, thereby suppressing deterioration of the drive shaft boot 10a.

In the front structure of the vehicle 100, the second ventilation opening 60 is composed of a number of holes 60a arranged in a line in the vertical direction and width direction of the vehicle 100, and the multiple holes 60a constituting the second ventilation opening 60 are formed so that the opening areas are approximately equal to each other, and the number of lower holes 60a is greater than the number of upper holes 60a in the vertical direction of the vehicle 100.

Increasing the number of holes 60a in the second ventilation opening 60 affects aerodynamic performance, so there is a limit to the number of holes 60a in the second ventilation opening 60. Therefore, by increasing the number of holes 60a on the lower side, it is possible to increase the amount of air guided below the engine 1 while suppressing the effect on aerodynamic performance.

In the front structure of the vehicle 100, at least the bottom row L1 of the lower holes 60a in the second ventilation opening 60 is hidden by the front bumper 3 when viewed from the front of the vehicle 100.

When viewed from the front, the impact on aerodynamic performance is small when the hole 60a is hidden by the front bumper 3. Therefore, by providing the hole 60a in such a position, the impact on aerodynamic performance can be reduced while the amount of air guided to the rear of the engine 1 can be increased.

In the front structure of the vehicle 100, a guide plate 70 is integrally provided on the rear surface 4b of the air guide 4 opposite the guide surface 4a, and extends toward the rear of the vehicle 100.

In this configuration, the guide plate 70 ensures that the air passing through the first ventilation opening 50 and the second ventilation opening 60 flows in a straight line.

In the front structure of the vehicle 100, the guide plate 70 includes a first guide plate 70a that is arranged to separate the first ventilation opening 50 and the second ventilation opening 60 from each other.

In this configuration, the first guide plate 70a can separate the air flow that has passed through the first ventilation opening 50 from the air flow that has passed through the second ventilation opening 60. This allows the traveling wind (air) that has passed through the first ventilation opening 50 to be guided upward, and the traveling wind (air) that has passed through the second ventilation opening 60 to be guided downward.

In the front structure of the vehicle 100, the guide plate 70 includes a pair of second guide plates 70b arranged to sandwich the first ventilation opening 50 in the vehicle width direction, and a pair of third guide plates 70c arranged to sandwich the second ventilation opening 60 in the vehicle width direction.

This configuration ensures that the air passing through the first ventilation opening 50 and the second ventilation opening 60 flows in a straight line, allowing more air to be guided to the desired location.

In the front structure of the vehicle 100, the first ventilation opening 50 is provided outside the second ventilation opening 60 in the vehicle width direction.

In the front structure of the vehicle 100 of this embodiment, the opening 11a of the intake duct 11 is provided on the outside in the vehicle width direction of the drive shaft boot 10a when viewed from the front of the vehicle 100. Therefore, by providing the first ventilation opening 50 on the outside of the second ventilation opening 60 in the vehicle width direction, the first ventilation opening 50 and the second ventilation opening 60 can be positioned appropriately.

In the front structure of the vehicle 100, the opening 11a of the intake duct 11 is provided to the left of the center in the vehicle width direction when viewed from the front of the vehicle 100, and the first ventilation opening 50 is provided to the left of the center in the vehicle width direction when viewed from the front of the vehicle 100 so as to correspond to the opening 11a of the intake duct 11.

In this configuration, by providing the first ventilation opening 50 at a position corresponding to the opening 11a of the intake duct 11, the running wind (air) that passes through the first ventilation opening 50 can be more reliably guided to the opening 11a of the intake duct 11.

In the front structure of the vehicle 100, the first ventilation opening 50 and the second ventilation opening 60 are provided on the guide surface 42a toward the outside in the vehicle width direction.

If the first ventilation opening 50 and the second ventilation opening 60 are provided near the radiator 2 (closer to the inside in the vehicle width direction on the guide surface 42a), the amount of air guided to the radiator 2 may decrease, and the cooling performance of the radiator 2 may decrease. Therefore, by providing the first ventilation opening 50 and the second ventilation opening 60 closer to the outside in the vehicle width direction on the guide surface 42a, it is possible to prevent a decrease in the amount of air guided to the radiator 2.

In the front structure of the vehicle 100, the air guide 4 has multiple planar portions 42b, 42c, 42d that are inclined toward each other, and ridges 42g, 42h, 42j formed at connection portions 42e, 42f, 42i where the multiple planar portions 42b, 42c, 42d are connected.

In this configuration, the strength of the air guide 4 can be increased by forming ridges 42g, 42h, and 42j at the connection parts 42e, 42f, and 42i where the multiple flat parts 42b, 42c, and 42d are connected, that is, by connecting the multiple flat parts 42b, 42c, and 42d that are inclined toward each other to form a curved shape of the air guide 4.

In the front structure of the vehicle 100, the ridges 42g, 42h, and 42j are formed so that a portion of each ridge crosses at least one of the first ventilation opening 50 and the second ventilation opening 60.

The holes 50a, 40a are provided in the first ventilation hole 50 and the second ventilation hole 60, which reduces the strength of the air guide 4. Therefore, by forming a portion of the ridges 42g, 42h, 42j to cross at least one of the first ventilation hole 50 and the second ventilation hole 60, the strength in the vicinity of the first ventilation hole 50 and the second ventilation hole 60 can be increased.

The above describes embodiments of the present invention, but the above embodiments merely show some of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

In the above embodiment, the opening 11a of the intake duct 11 is provided to the left of the center in the vehicle width direction when viewed from the front of the vehicle 100, but the first ventilation opening 50 can be provided in alignment with the opening 11a of the intake duct 11.

In the above embodiment, one end of the second guide plate 70b and one end of the third guide plate 70c are connected to the first guide plate 70a, but this is not limiting and these may be provided separately (independently).

In addition, in the above embodiment, the air guide 4 is described as having a guide plate 70 and ridges 42g, 42h, and 42j, but it is not necessary for the air guide 4 to have these configurations.

REFERENCE SIGNS LIST 1 Engine 2 Radiator 3 Front bumper 3a Opening 4 Air guide 4a, 42a Guide surface 4b Rear surface 5 Undercover 10 Drive shaft 10a Drive shaft boot 11 Intake duct 11a Opening 12 Resonator 41 First guide portion 42 Second guide portion 42b, 42c, 42d Flat portion 42e, 42f, 42i Connection portion 42g, 42h, 42j Ridge line 43 Third guide portion 50 First ventilation hole 50a Hole 60 Second ventilation hole 60a Hole 70 Guide plate 70a First guide plate 70b Second guide plate 70c Third guide plate 100 Vehicle

Claims (15)

A front structure of a vehicle,
an air guide provided behind the opening of the front bumper and having a guide surface for directing air to the radiator;
The air guide is
a first ventilation port provided so as to penetrate the air guide from the guide surface and to guide air to an opening of an intake duct of an engine;
a second ventilation opening provided on the guide surface below the first ventilation opening so as to pass through the air guide and guide air to a rear of the engine. 2. A vehicle front structure according to claim 1,
A resonator connected to the intake duct is provided behind the first ventilation opening,
A front structure of a vehicle, wherein the opening of the intake duct is provided above the resonator. A front structure for a vehicle according to claim 1 or 2,
A front structure for a vehicle, characterized in that the first ventilation opening is composed of a plurality of holes arranged in a row in the vertical and width directions of the vehicle, and the plurality of holes constituting the first ventilation opening are formed so that their opening areas are approximately equal to each other, and so that the number of holes on the upper side is greater than the number of holes on the lower side in the vertical direction of the vehicle. A front structure for a vehicle according to any one of claims 1 to 3,
The second ventilation opening is provided so as to face a gap between the engine and an undercover that covers a lower surface of the engine. A front structure for a vehicle according to claim 4,
A vehicle front structure, characterized in that a drive shaft boot is provided behind the gap to cover a portion of a drive shaft that transmits power from the engine to drive wheels. A front structure for a vehicle according to any one of claims 1 to 5,
The second ventilation opening is composed of a plurality of holes arranged in the vertical direction and the width direction of the vehicle,
A front structure of a vehicle, characterized in that the multiple holes constituting the second ventilation opening are formed so that their opening areas are approximately equal to each other, and the number of lower holes is greater than the number of upper holes in the vertical direction of the vehicle. A front structure for a vehicle according to claim 6,
A front structure for a vehicle, wherein at least the lowermost row of the lower holes in the second ventilation opening are hidden by the front bumper when viewed from the front of the vehicle. A front structure for a vehicle according to any one of claims 1 to 7,
A front structure for a vehicle, comprising: a guide plate that is integrally provided on a rear surface of the air guide opposite the guide surface and extends rearward of the vehicle. A front structure for a vehicle according to claim 8,
The front structure of a vehicle, wherein the guide plate comprises a first guide plate provided so as to separate the first ventilation opening and the second ventilation opening into upper and lower sections. A front structure for a vehicle according to claim 8 or 9,
The guide plate is
A pair of second guide plates provided to sandwich the first ventilation port in the vehicle width direction;
a pair of third guide plates arranged to sandwich the second ventilation opening in the vehicle width direction. A front structure for a vehicle according to any one of claims 1 to 10,
A front structure for a vehicle, wherein the first ventilation opening is provided outwardly of the second ventilation opening in a vehicle width direction. A front structure for a vehicle according to any one of claims 1 to 11,
The opening of the intake duct is provided to the left of the center in a vehicle width direction in a front view of the vehicle,
A front structure of a vehicle, characterized in that the first ventilation opening is provided to the left of the center in the vehicle width direction when viewed from the front of the vehicle, so as to correspond to the opening of the intake duct. A front structure for a vehicle according to any one of claims 1 to 12,
A front structure for a vehicle, wherein the first ventilation opening and the second ventilation opening are provided on the guide surface toward the outer side in a vehicle width direction. A front structure for a vehicle according to any one of claims 1 to 13,
The air guide is
A plurality of planar portions inclined to each other;
and a ridge line formed at a connection portion where the plurality of planar portions are connected. A front structure for a vehicle according to claim 14,
A front structure of a vehicle, wherein a portion of the ridge line is formed to cross at least one of the first ventilation opening and the second ventilation opening.