JP2021050643A - Vehicle intake device - Google Patents

Abstract

To prevent inflow of a water component into an air intake unit of a vehicle intake system.SOLUTION: A vehicle intake system 100 includes: a front bulkhead 5 forming a front end part of an engine room 6; a front bumper 1 in which an air introduction port is opened; an air intake unit 10 which is disposed at a left side of an axis CL1 at a vehicle center, faces a front space 8 between the front bulkhead 5 and the front bumper 1, and takes air introduced through the air introduction port thereinto; and a passage formation member 9 which forms an intake passage 9a from the air intake unit 10 to the engine 7. The air intake unit 10 has: an air intake port facing the front space 8; and an air outlet port connected to the intake passage 9a and is configured to form an internal passage from the air intake port to the air outlet port. The air intake port is provided on a left side surface of the air intake unit 10.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle intake device that takes in intake air into an internal combustion engine mounted on a vehicle.

As a device of this type, an intake intake port is conventionally arranged in front of a heat exchanger arranged in front of the engine room through an opening of a front bumper, whereby hot air in the engine room is provided through the intake intake port. A device that suppresses suction into the intake path is known (see Patent Document 1).

JP-A-2018-105267

However, if the intake intake port is arranged in front of the heat exchanger as in the device described in Patent Document 1, moisture such as rain and snow may be sucked into the intake path together with air, which may adversely affect the intake performance and the like. ..

The vehicle intake device according to one aspect of the present invention is arranged in front of the partition member and the partition member forming the front end of the accommodation space in which the internal combustion engine mounted on the vehicle is housed, and the air introduction port is opened. The air introduced through the air inlet is arranged on one side in the vehicle width direction from the center of the air inlet in the vehicle width direction facing the front space between the front bumper and the partition member and the front bumper. It includes an air intake unit for taking in air and a passage forming member for forming an intake passage from the air intake unit to the internal combustion engine. The air intake unit has an air intake port facing the front space and an air outlet connected to an intake passage, and is configured to form an internal passage from the air intake port to the air outlet. The air intake port is provided on the side surface of the air intake unit on one side in the vehicle width direction.

The vehicle intake device, which is another aspect of the present invention, is arranged in front of the partition member and the partition member forming the front end of the accommodation space in which the internal combustion engine mounted on the vehicle is housed, and the air introduction port. Is located on one side of the air inlet in the vehicle width direction from the center of the air inlet in the vehicle width direction facing the front space between the front bumper with the opening and the partition member and the front bumper, and was introduced through the air inlet. It includes an air intake unit that takes in air and a passage forming member that forms an intake passage from the air intake unit to the internal combustion engine. The air intake unit has an air intake port facing the front space, a lower case member having an upper surface opening on the upper surface, an air outlet connected to a passage forming member, and communicating with the upper surface opening on the bottom surface. It has an upper case member having a bottom opening to be formed. The lower case member has a bottom wall, a front portion, a rear portion, an end portion on one side in the vehicle width direction, and an end on the other side in the vehicle width direction so as to form a first internal passage from the air intake port to the upper surface opening. It has a front wall, a rear wall, a first side wall and a second side wall, which are erected from the portion, respectively, and an air intake port is opened on one side in the front-rear direction of the first side wall. The upper case member is configured to have an air outlet on the rear surface and to form a second internal passage communicating with the first internal passage from the bottom opening to the air outlet.

According to the present invention, it is possible to prevent water such as rainwater that has flowed in through the air inlet from flowing into the air intake unit, and to prevent the inflow of water from adversely affecting the intake performance and the like.

The front view which shows the main part structure of the vehicle which has the vehicle intake device which concerns on embodiment of this invention. The plan view which shows the main part structure of the vehicle which has the vehicle intake device which concerns on embodiment of this invention. The perspective view which shows the whole structure of the air intake unit which comprises the vehicle intake device which concerns on embodiment of this invention together with the body frame. A perspective view of the air intake unit in a state where a part of the vehicle body frame is omitted, as viewed diagonally from the rear right. A perspective view of an air intake unit in a state where a part of the vehicle body frame is omitted, as viewed from a direction different from that in FIG. 4A. A perspective view of the lower case constituting the air intake unit of FIG. 3 as viewed diagonally to the right from the front. A perspective view of the lower case constituting the air intake unit of FIG. 3 as viewed from a direction different from that of FIG. 5A. A perspective view showing a state in which the lower case of FIGS. 5A and 5B is attached to the vehicle body frame. A cross-sectional perspective view showing a state in which a rubber member is attached to the lower case of FIGS. 5A and 5B. A perspective view of the upper case constituting the air intake unit of FIG. 3 as viewed diagonally to the right from the front. FIG. 8 is a perspective view of a single rubber member mounted on the upper case of FIG. FIG. 5 is a cross-sectional view showing a state in which the rubber member of FIG. 9 is incorporated in the air intake unit of FIG. The plan view of the air intake unit of FIG. FIG. 5 is a cross-sectional view showing a state in which the rubber member of FIG. 7 is incorporated in the air intake unit of FIG. The figure which shows typically the flow of the air by the vehicle intake device which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 13. The vehicle intake device according to the embodiment of the present invention constitutes an intake path through which air (intake) sucked into an internal combustion engine mounted on the vehicle flows. FIG. 1 is a front view (viewed from the front of the vehicle) showing a configuration of a main part of a vehicle having a vehicle intake device according to an embodiment of the present invention, and FIG. 2 is a plan view (viewed from above the vehicle). Is. In the following, for convenience, the front-rear direction (length direction), the left-right direction (width direction), and the up-down direction (height direction) of the vehicle are defined as shown in the figure, and the configuration of each part will be described according to this definition.

As shown in FIGS. 1 and 2, the front part of the vehicle is symmetrical about the central axis CL1 in the left-right direction, and has a substantially arc shape (convex curved shape) from the center part in the left-right direction to both ends in the left-right direction. A smoothly formed front bumper 1 is arranged on the floor. Above the left and right ends of the front bumper 1, lamp bodies 2 that illuminate the front of the vehicle are arranged. A pair of upper and lower air introduction ports 1a extending in the left-right direction are opened in the central portion of the front bumper 1 in the left-right direction below the lamp body 2.

Although detailed illustration is omitted, as shown in FIG. 1, a heat exchanger 3 is arranged behind the central portion in the left-right direction of the front bumper 1 so as to face the air introduction port 1a. The heat exchanger 3 is a radiator that cools the engine cooling water by the cooling air introduced through the air introduction port 1a, a condenser that cools the air-conditioning refrigerant, and the like. Cover members 4 are arranged on the left and right sides of the heat exchanger 3 so as to face the left and right ends of the air inlet 1a. The cover member 4 is provided to block the line of sight from the front of the vehicle to the engine room through the air introduction port 1a, and by providing the cover member 4, it is possible to prevent spoiling the aesthetic appearance of the vehicle as seen from the front.

As shown in FIG. 2, a front bulkhead 5 is provided behind the front bumper 1. The front bulkhead 5 is composed of a frame member extending in the left-right direction, and is located at the front end portion of the engine room 6. That is, the front bulkhead 5 constitutes a partition member for partitioning the engine room 6, and the engine 7 as an internal combustion engine is arranged in the engine room 6 behind the front bulkhead 5. The engine 7 is, for example, a spark-ignition gasoline engine. The engine 7 may be a diesel engine or an alcohol engine.

Behind the front bumper 1, an air intake unit 10 is provided facing a space 8 (referred to as a front space) extending in the vertical and horizontal directions between the front bumper 1 and the front bulkhead 5. As shown in FIGS. 1 and 2, the air intake unit 10 is above the air inlet 1a of the front bumper 1 and above the cover member 4 on the left side, and is on the left side of the axis CL1, more specifically, the lamp body 2. Placed in the vicinity. Gap is provided between the rear surface of the cover member 4 and the front surface of the front bulkhead 5, and between the upper surface of the cover member 4 and the bottom surface of the air intake unit 10. A part of the air that has flowed into the front space 8 through the air introduction port 1a is taken into the air intake unit 10 through these gaps.

As shown in FIG. 2, the air intake unit 10 is connected to one end of a passage forming member 9 (pipe or the like) constituting the intake passage 9a, and the other end of the passage forming member 9 is connected to the engine 7. .. As a result, the air taken into the air intake unit 10 is sucked into the engine 7 through the intake passage 9a. Although not shown, in the middle of the intake passage 9a, an air cleaner for removing dust and the like during intake, a throttle valve for adjusting the intake amount, an intake manifold for distributing intake to each cylinder of the engine 7, and the like are provided in the intake passage 9a. It is arranged in order from the upstream side of.

Among the configurations described above, the vehicle intake device 100 according to the present embodiment includes a front bumper 1 in which an air introduction port 1a is opened, a front bulkhead 5 forming a front end portion of an engine room 6, a front bumper 1 and a front bulk. An air intake unit 10 arranged on the left side of the axis CL1 facing the front space 8 between the head 5 and a passage forming member 9 forming an intake passage 9a from the air intake unit 10 to the engine 7 Mainly composed. By arranging the air intake unit 10 on the left side of the axis CL1 facing the front space 8 in front of the engine room 6 in this way, relatively low temperature air can be sucked in. Therefore, the intake air temperature is lowered and the intake air mass per unit volume is increased, so that the efficiency of the engine 7 can be improved.

On the other hand, when the air intake unit 10 is arranged in the front space 8 behind the front bumper 1, the moisture that has flowed into the front space 8 through the air introduction port 1a is taken in by air during traveling during rainfall or snowfall. There is a risk of being sucked from the unit 10. Then, when water is sucked from the air intake unit 10, the water reaches the inside of the intake passage 9a, which may adversely affect the intake performance. Therefore, in order to suppress the suction of water from the air intake unit 10, the present embodiment configures the air intake unit 10 as follows.

FIGS. 3, 4A and 4B are perspective views showing the overall configuration of the air intake unit 10, respectively. In the figure, parts other than the air intake unit 10, that is, the front bulkhead 5, the front upper beam 51 extending in the left-right direction in front of the front bulkhead 5, and extending forward from the upper end of the front bulkhead 5. A plurality of connecting frames 52 in the left-right direction supporting the front upper beam 51 are shown by a two-dot chain line. The front bulkhead 5, the connecting frame 52, and the front upper beam 51 and the connecting frame 52 are fastened with, for example, bolts. Reference numeral 53 in the drawing is a support column extending downward from the left end portion of the front bulkhead 5. In FIGS. 4A and 4B, the front upper beam 51, the connecting frame 52, and the support column 53 are not shown.

The front bulkhead 5, the front upper beam 51, the connecting frame 52, and the support column 53 are all vehicle structures (strength members) and constitute the vehicle body frame 50. As shown in FIG. 2, the front upper beam 51 extends along the front bumper 1 and a front space 8 is formed between the front upper beam 51 and the front bulkhead 5.

As shown in FIGS. 3, 4A and 4B, the air intake unit 10 has a lower case 20 and an upper case 30 arranged above the lower case 20. As shown in FIG. 3, the lower case 20 faces the front surface 5a of the front bulkhead 5 and is arranged below the front upper beam 51 and the connecting frame 52. The upper case 30 is arranged above the front bulkhead 5, the front upper beam 51, and the connecting frame 52 so as to straddle the front space 8. The lower case 20 and the upper case 30 are formed by resin molding, for example, using a heat-resistant resin as a constituent material.

5A and 5B are perspective views showing the configuration of the lower case 20 as a single unit, respectively. FIG. 6 is a perspective view showing an attached state of the lower case 20, that is, a perspective view showing a state in which the upper case 30 is removed from FIG. In FIG. 6, the connecting frames 52 located on the left and right sides of the lower case 20 are indicated by reference numerals 521 and 522, respectively.

As shown in FIGS. 5A and 5B, the lower case 20 has a plate-shaped bottom wall 21 having a substantially rectangular shape in a plan view, a front wall 22 rising upward from the front edge of the bottom wall 21, and a bottom wall. It has a rear wall 23 that rises upward from the trailing edge of 21, a left wall 24 that rises upward from the left edge of the bottom wall 21, and a right wall 25 that rises upward from the right edge of the bottom wall 21. The lower case 20 has a substantially box shape with an open upper surface as a whole.

A part of the upper surface of the lower case 20, that is, the front side is covered with an upper wall 26 connected to the front wall 22 and the front side portion of the right wall 25, and an upper surface opening 27 of the lower case 20 is formed behind the upper wall 26. To. Through holes 26a are opened in the upper wall 26 at two locations on the left and right. As shown in FIG. 6, the upper wall 26 is fixed to the bottom surface of the front upper beam 51 by a clip 11 inserted into the through hole 26a. As shown in FIG. 5A, through holes 23a are opened at two positions on the left and right sides of the rear wall 23. As shown in FIG. 6, the rear wall 23 is fixed to the front surface 5a of the front bulkhead 5 by a clip 12 inserted into the through hole 23a.

As shown in FIG. 5A, the left wall 24 is erected behind the front wall 22 by a predetermined length, and as shown in FIG. 4B, in front of the front edge 24a of the left wall 24 when viewed from the left. A substantially rectangular opening 28 is formed. The opening 28 constitutes an air intake port of the air intake unit 10. The front and left end 21a of the bottom wall 21 connected to the air intake port 28 is formed in a concave shape downward, whereby a predetermined opening area is secured.

As shown in FIG. 5A, a concave notch 23b is provided on the upper surface of the right end portion of the rear wall 23, and the left end portions 22a and 26b of the front wall 22 and the upper wall 26 are the left edge of the bottom wall 21. It is cut off in the middle without extending to. As a result, as shown in FIG. 6, when the lower case 20 is attached to the vehicle body frame 50, the connecting frame 521 extending in the front-rear direction on the upper right side of the lower case 20 is prevented from interfering with the lower case 20. be able to. In the state where the lower case 20 is attached, the upper edge of the left wall 24 is located on the left side of the connecting frame 521 and above the bottom surface of the connecting frame 521. Therefore, although not shown, the upper end of the left wall 24 overlaps with the connecting frame 521 when the lower case 20 is viewed from the left.

The right wall 25 extends in a curved surface along the left side surface of the connecting frame 522 on the right side of the lower case 20. As shown in FIG. 5A, the front side portion 26c of the upper wall 26 is formed in a concave shape. Further, a plate portion 26d is projected horizontally on the front side portion of the right wall 25 toward the right below the upper wall 26. As a result, as shown in FIG. 6, when the lower case 20 is attached to the vehicle body frame 50, the front upper beam 51 extending in the left-right direction on the front upper side of the lower case 20 and the right side of the right wall 25 and the plate portion 26d It is possible to prevent the connecting frame 522 extending above the above in the front-rear direction from interfering with the lower case 20.

As shown in FIGS. 5A and 5, the right wall 25 has a protrusion 250 that protrudes above the connecting frame 522 behind the front upper beam 51. As shown in FIG. 5B, the projecting portion 250 is opened with three through holes 250a in the front-rear direction, and the projecting portion 250 has elasticity of rubber or rubber as a constituent material through each through hole 250a. The rubber member 13 is mounted over the entire front-rear direction of the protrusion 250.

FIG. 7 is a cross-sectional view showing a mounted state of the rubber member 13. As shown in FIG. 7, the rubber member 13 has a base portion 131 extending from the left side to the right side beyond the upper end of the protruding portion 250, and a clip 132 protruding to the right from the lower end portion of the base portion 131. The clips 132 are provided at three positions in the front-rear direction corresponding to the positions of the through holes 250a, and the clip 132 is press-fitted into the through holes 250a from the left side of the protrusion 250, so that the rubber member 13 is attached to the protrusion 250. To. When the clip 132 is press-fitted, the base portion 131 is in close contact with the left surface of the protruding portion 250. On the other hand, on the right side of the protruding portion 250, the base portion 131 extends diagonally downward to the right, and the lower end portion 131a on the right side of the base portion 131 extends horizontally to the right.

FIG. 8 is a perspective view (viewed from diagonally above) of the upper case 30 alone. The upper case 30 is attached to the vehicle body frame 50 after the lower case 20 is attached to the vehicle body frame 50. That is, after the lower case 20 is attached to the front surface 5a of the front bulkhead 5 and the bottom surface of the front upper beam 51 (FIG. 6), the upper case 30 is attached to the upper surfaces of the front bulkhead 5 and the front upper beam 51.

As shown in FIG. 8, the upper case 30 has a plate portion 31 having a substantially rectangular shape in a plan view, and a pipe portion 32 extending rearward from the central portion in the front-rear direction on the right side of the plate portion 31. The pipe portion 32 is formed in a substantially rectangular shape at the front end portion connected to the plate portion 31, and is formed in a cylindrical shape toward the rear. The pipe portion 32 projects rearward from the rear end of the plate portion 31 and exhibits a substantially cylindrical shape in the protruding region thereof. The pipe portion 32 not only bulges from the upper surface of the plate portion 31, but also bulges from the bottom surface of the plate portion 31. In the upper case 30, for example, a plurality of parts vertically divided based on the bulging region of the pipe portion 32, that is, a part having an upwardly bulging portion and a part having a downwardly bulging portion are welded to each other. Can be formed by

On the bottom surface of the upper case 30, a substantially rectangular opening, that is, a bottom surface opening 33 is formed at the connection portion between the plate portion 31 and the pipe portion 32. A passage 34 is formed inside the pipe portion 32 along the front-rear direction, and the front end portion of the passage 34 communicates with the bottom opening 33. The rear end portion of the passage 34, that is, the opening 35 at the rear end portion of the pipe portion 32 forms an air outlet of the air intake unit 10, and the front end portion of the passage forming member 9 (FIG. 2) is connected to the air outlet 35. Will be done.

Two through holes 31a are opened in the front end portion of the plate portion 31 in the left-right direction. The right through hole 31a is located at the right end of the plate portion 31, while the left through hole 31a is located substantially at the center of the plate portion 31 in the left-right direction. As shown in FIG. 6, through holes 51a are opened in the front upper beam 51 on both the left and right sides of the clip 11. As shown in FIG. 3, clips 36 penetrating each through hole 31a of the plate portion 31 are engaged with these through holes 51a. As a result, the front end portion of the upper case 30 is fixed to the upper surface of the front upper beam 51.

As shown in FIG. 8, three through holes 31b in the left-right direction are opened at the rear end of the plate portion 31. The right and center through holes 31b are located on both the left and right sides of the pipe portion 32, and the left through holes 31b are located at the left end of the plate portion 31. As shown in FIG. 6, three through holes 5b are opened in the left-right direction on the upper surface of the front bulkhead 5. As shown in FIG. 3, clips 37 penetrating each through hole 31b of the plate portion 31 are engaged with these through holes 5b. As a result, the rear end portion of the upper case 30 is fixed to the upper surface of the front bulkhead 5.

As shown in FIG. 8, on the bottom surface of the upper case 30, a rubber member 14 having elasticity made of rubber or rubber as a constituent material is mounted across the bottom surface of the pipe portion 32 in the left-right direction. FIG. 9 is a perspective view of a single unit of the rubber member 14 as viewed diagonally from the rear, and FIG. 10 is a cross-sectional view of the upper case 30 showing an attached state of the rubber member 14. FIG. 11 is a plan view showing a state in which the air intake unit 10 is attached to the vehicle body frame 50.

As shown in FIG. 8, a protruding portion 38 for mounting the rubber member 14 is projected downward from the bottom surface of the plate portion 31 of the upper case 30. The protruding portion 38 extends in the left-right direction across the pipe portion 32. In the protruding portion 38, one through hole 38a is opened in the left protruding portion 38, and two left and right through holes 38a are opened in the right protruding portion. As shown in FIGS. 9 and 10, the rubber member 14 projects forward from three positions in the left-right direction on the front surface of the base portion 141 corresponding to the positions of the base portion 141 extending in the left-right direction and the through hole 38a. It has three clips 142 (only one shown).

The left-right length of the base portion 141 is substantially equal to the length from the left end portion to the right end portion of the protrusion 38, and the upper edge of the base portion 141 has a pipe portion to avoid interference with the bottom surface of the pipe portion 32. A concave notch 143 corresponding to the bottom surface shape of 32 is provided. As shown in FIG. 10, the clip 142 is press-fitted into the through hole 38a from the rear of the protrusion 38, whereby the rubber member 14 is attached to the protrusion 38. When the clip 142 is press-fitted, the base portion 141 is in close contact with the rear surface of the protruding portion 38.

The lower end of the base portion 141 is formed so as to be bent rearward, and when the upper case 30 is fixed to the vehicle body frame 50, the lower end portion of the base portion 141 is pressed against the upper surface of the front bulkhead 5. As a result, the gap between the upper surface of the front bulkhead 5 and the bottom surface of the upper case 30 is sealed by the rubber member 14. That is, since the upper surface of the front bulkhead 5 is formed in an uneven shape, a gap between the front bulkhead 5 and the upper case 30 is likely to occur, but by providing the rubber member 14, this gap can be sealed.

The sealing region formed by the rubber member 14 at this time is the dotted line region AR1 in FIG. 11, and covers the entire rear wall 23 (FIG. 6) of the lower case 20 in the left-right direction. As a result, it is possible to prevent the suction of air and moisture from the rear of the rubber member 14 into the air intake unit 10 as shown by the arrow A1 in FIG. In this case, since pressure acts on the rubber member 14 in the direction of pressing the lower end portion of the rubber member 14 against the upper surface of the front bulkhead 5 by the air flow, the sealing property is good.

As shown in FIG. 8, a protruding portion 39 is projected further downward at the right end portion of the bottom surface of the upper case 30. The protrusion 39 extends in the front-rear direction along the left side surface of the connecting frame 522 of FIG. 6 corresponding to the position of the rubber member 13 of the lower case 20. FIG. 12 is a cross-sectional view showing the positional relationship between the protruding portion 39 and the rubber member 13 when the lower case 20 and the upper case 30 are attached to the vehicle body frame 50.

As shown in FIG. 12, the lower end 131a of the rubber member 13 extending to the right beyond the upper end of the protrusion 250 on the right wall 25 of the lower case 20 is pressed from above by the protrusion 39 on the bottom surface of the upper case 30. To. As a result, the gap between the right wall 25 of the lower case 20 and the upper case 30 is sealed by the rubber member 13.

The sealing region formed by the rubber member 13 at this time is the dotted line region AR2 in FIG. 11, and covers the entire space (FIG. 6) between the front bulkhead 5 and the front upper beam 51 in the front-rear direction. As a result, it is possible to prevent the suction of air and moisture from the right side of the rubber member 13 into the air intake unit 10 as shown by the arrow A2 in FIG. In this case, since pressure acts on the rubber member 13 in the direction of pressing the lower end portion 131a of the rubber member 13 against the protruding portion 39 by the flow of air, the sealing property is good.

FIG. 13 is a plan view schematically showing the flow of intake air by the vehicle intake device 100 according to the present embodiment. Inside the air intake unit 10, a first internal passage PA1 is formed from the air intake port 28 on the right side of the lower case 20 to the upper surface opening 27. Further, a second internal passage PA2 communicating with the first internal passage PA1 is formed from the bottom opening 33 of the upper case 30 to the air outlet 35 on the rear surface.

When the engine 7 is operating, as shown by an arrow B1 in FIG. 13, air is taken into the front space 8 between the front bumper 1 and the front bulkhead 5 through the air inlet 1a of the front bumper 1. The taken-in air flows to the left along the cover member 4 that functions as a baffle plate. That is, it flows to the left, for example, through the rear of the cover member 4 as shown by the arrow B11, or above the cover member 4 as shown by the arrow B21.

Since the right surface of the air intake unit 10 is closed by the right wall 25 of the lower case 20, the air of the arrows B11 and B21 is prevented from flowing into the air intake unit 10 from the right surface. Further, since the bottom surface, the front surface, and the rear surface of the air intake unit 10 are closed by the bottom wall 21, the front wall 22, and the rear wall 23 of the lower case 20, respectively, the air of the arrows B11 and B21 is bottomed in the air intake unit 10. , Inflow from the front and back is also blocked. Therefore, the air of the arrows B11 and B21 passes behind the cover member 4 and below the air intake unit 10 as shown by the arrow B21, or above the cover member 4 and above the air intake unit 10 as shown by the arrow B22. It passes under the 10 and is guided to the space 8a between the air intake unit 10 and the lamp body 2 on the left side thereof.

The left side of the air intake unit 10 is closed by the left wall 24 on the rear side. Therefore, as shown by the arrow B13, the air in the space 8a is prevented from flowing into the air intake unit 10 from the rear side of the right surface of the air intake unit 10. Therefore, the air in the space 8a flows into the air intake unit 10 mainly through the air intake port 28 on the front side on the right side of the air intake unit 10. By taking in air from the predetermined opening 28 in this way, it becomes easy to manage the amount of intake air. The air that has flowed into the air intake unit 10 passes through the first internal passage PA1 and the second internal passage PA2 as shown by the arrows, and flows into the intake passage 9a.

When moisture such as rainwater or snow flows into the front space 8 through the air inlet 1a of the front bumper 1 in the case of rainfall or snowfall, the inflowing moisture is scattered in the front space 8, for example, or air. It may flow to the left in the front space 8 along the flow. However, in the present embodiment, the air intake port 28 of the air intake unit 10 is provided on the left and right opposite sides of the air introduction port 1a, and the left surface, the bottom surface, the front surface, and the rear surface of the air intake unit 10 are closed. Therefore, it is possible to prevent the moisture flowing in the front space 8 from flowing in from the air intake port 28.

In particular, the cover member 4 is arranged below the air intake port 28, and the space below the air intake port 28 is narrower than the space below the left wall 24. Therefore, it is difficult for moisture to pass through the space below the air intake port 28, and the inflow of moisture into the air intake unit 10 can be satisfactorily prevented. Further, since the upper end of the left wall 24 is located above the bottom surface of the connecting frame 521, it is possible to prevent moisture from flowing into the air intake unit 10 from above the left wall 24 without passing through the air intake port 28. As shown in FIG. 13, the rear end portion of the cover member 4 below the lower case 20 is located below the air intake port 28. In other words, the rear end portion of the air intake port 28 is located behind the rear end portion of the cover member 4 below the lower case 20. Therefore, only the air in the front space 8 can be smoothly taken in from the air intake port 28.

On the left surface of the air intake unit 10, a rubber member 13 is provided in a region AR2 (FIG. 11) extending in the front-rear direction of the lower case 20 so as to close the gap between the lower case 20 and the upper case 30. Moisture tends to flow to the left in the front space 8, but by sealing with the rubber member 13, it is possible to reliably prevent the moisture from flowing into the air intake unit 10 due to the flow to the left. Can be done.

On the rear surface of the air intake unit 10, a rubber member 14 is provided in a region AR1 (FIG. 11) extending in the left-right direction of the lower case 20 so as to close the gap between the lower case 20 and the upper case 30. As a result, for example, in a situation where rainwater or the like collides with some part in the front space 8 and is reflected forward, the moisture flows into the air intake unit 10 from the rear through above the front bulkhead 5. It can be reliably prevented. Further, since the rear surface of the air intake unit 10 faces the engine room 6 (FIG. 2), the air temperature behind the air intake unit 10 is relatively high, but by sealing with the rubber member 14, the temperature is high. It is possible to suppress the inhalation of air.

In this embodiment, the front surface of the air intake unit 10 is not provided with a rubber member between the lower case 20 and the upper case 30. However, for example, when the upper surface and the bottom surface of the front upper beam 51 have a large degree of unevenness and the gap between the lower case 20 and the upper case 30 is large, a rubber member may be provided as in the right surface and the rear surface. However, since the cover member 4 is located below the front wall 22 of the lower case 20, the space below the front wall 22 is narrow, and the front bumper 1 and the like are present in front of the front wall 22, so that the front wall 22 The front space is also narrow. Therefore, even if there is no rubber member, there is little possibility that moisture will flow in from the front surface of the air intake unit 10.

According to this embodiment, the following effects can be obtained.
(1) The vehicle intake device 100 is arranged in front of the front bulkhead 5 and the front bulkhead 5 which form the front end of the engine room 6 in which the engine 7 mounted on the vehicle is housed, and the air introduction port. The air inlet 1a is located on the left side of the axis CL1 centered in the vehicle width direction of the air inlet 1a facing the front space 8 between the front bulkhead 5 and the front bumper 1 and the front bumper 1 with the opening 1a. An air intake unit 10 that takes in air introduced through 1a and a passage forming member 9 that forms an intake passage 9a from the air intake unit 10 to the engine 7 are provided (FIGS. 1 and 2). The air intake unit 10 has an air intake port 28 facing the front space 8, a lower case 20 having an upper surface opening 27 on the upper surface, an air outlet 35 connected to the passage forming member 9, and a bottom surface. Has an upper case 30 having a bottom opening 33 communicating with the top opening 27 (FIGS. 5A, 8). The lower case 20 is erected from the bottom wall 21 and the front, rear, left and right parts of the bottom wall 21 so as to form the first internal passage PA1 from the air intake port 28 to the upper surface opening 27, respectively. It has a front wall 22, a rear wall 23, a left wall 24, and a right wall 25, and an air intake port 28 is opened on the front side of the left wall 24 (FIGS. 5A, 5B, 13). The upper case 30 is configured to have an air outlet 35 on the rear surface and to form a second internal passage PA2 communicating with the first internal passage PA1 from the bottom opening 33 to the air outlet 35 (FIGS. 8 and 13). ).

In this way, the air intake port 28 is formed on the front side of the left wall 24, which is on the left and right sides opposite to the vehicle width direction center (axis line CL1) side of the air introduction port 1a, so that the air introduction port 1a is formed during traveling. It is possible to prevent water such as rainwater and snow that has flowed in from the air intake unit 10 from being taken into the air intake unit 10 through the air intake port 28. As a result, it is possible to prevent the intake performance of the engine 7 from being adversely affected.

(2) The air intake unit 10 further includes a rubber member 13 interposed between the right wall 25 (protruding portion 250) of the lower case 20 and the upper case 30 (FIG. 12). As a result, it is possible to reliably prevent the moisture that has flowed in through the air introduction port 1a on the right side from flowing into the air intake unit 10.

(3) The lower case 20 has a protruding portion 250 that supports the rubber member 13, and the rubber member 13 extends above the right wall 25 (protruding portion 250) of the lower case 20 to the right. The upper case 30 has a protruding portion 39 protruding so as to press the rubber member 13 downward on the right side of the right wall 25 (FIG. 12). As a result, the rubber member 13 is pressed against the protruding portion 39 by the air flow to the right in the front space 8, so that good sealing performance can be ensured.

(4) The rear end portion of the upper case 30 has a through hole 31b fixed to the upper surface of the front bulkhead 5, and a rubber member that seals a gap with the upper surface of the front bulkhead 5 at the bottom portion on the rear end side. It has 14 (FIGS. 8 and 10). As a result, it is possible to reliably prevent rainwater or the like that has flowed in from the air introduction port 1a from being reflected by the front space 8 and flowing into the air intake unit 10.

(5) The vehicle intake device 100 further includes a cover member 4 extending in the vehicle width direction from the rear of the air introduction port 1a to the lower side of the lower case 20 in the front space 8 (FIG. 1). The air intake port 28 is provided from the front end portion of the lower case 20 to the rear of the rear end portion of the upper surface of the cover member 4 located below the lower case 20 (FIG. 13). As a result, the area of the space around the lower case 20 is narrowed toward the air intake port 28, so that the moisture such as rainwater flowing in from the air introduction port 1a does not easily reach the air intake port 28, and the moisture such as rainwater does not easily reach the air intake port 28. It is possible to reliably prevent the ingestion of water.

The above embodiment can be transformed into various forms. Hereinafter, a modified example will be described. In the above embodiment, the front wall 22, the rear wall 23, the left wall 24 (first side wall) and the right wall 25 (second side wall) are erected from the bottom wall 21 of the lower case 20, and air is erected on the front side of the left wall 24. Although the intake port 28 is opened, the air intake port may be opened to the rear side of the first side wall, and the configuration of the lower case member is not limited to that described above. That is, one side in the front-rear direction in which the air intake port is provided and the other side in the front-rear direction in which the air intake port is not provided and the other side in the front-rear direction may be either the front side or the rear side. The air intake unit may be arranged on the right side of the vehicle instead of the left side of the vehicle, in which case the first side wall through which the air intake is opened is the right wall. In the above embodiment, although the plate portion 31 and the pipe portion 32 are provided, the air outlet 35 is opened on the rear surface of the upper case 30, but the configuration of the upper case member is not limited to this. For example, the upper case member, not the lower case member, is provided with a front wall, a rear wall, and left and right side walls from the upper wall downward, and an air intake port is provided on the side wall opposite to the center side in the vehicle width direction of the intake air intake port. May be opened.

In the above embodiment, the air intake unit 10 is composed of a lower case 20 and an upper case 30 which are divided into upper and lower parts, but an air intake port facing the front space 8 and an air outlet connected to the intake passage 9a. And, it is configured to form an internal passage from the air intake port to the air outlet, and the air intake port is the side surface of the air intake unit on one side in the vehicle width direction (opposite side of the axis CL1 in the center of the vehicle). The configuration of the air intake unit may be any as long as it is provided in. For example, the air intake unit may be composed of three or more case members. When the air intake unit is composed of a pair of upper and lower case members, that is, a lower case member having an upper surface opening on the upper surface and an upper case member having a bottom surface opening communicating with the upper surface opening on the bottom surface, one side surface in the vehicle width direction is formed. If the lower case member is formed so that the air intake port is provided on one side in the front-rear direction and the upper case member is formed so that the air outlet is provided on the rear surface, the lower case member and the upper case member The shape may be anything.

In the above embodiment, the front bulkhead 5 is used as a partition wall member constituting the front end portion of the engine room 6 as an accommodation space for an internal combustion engine, but the configuration of the partition wall member is not limited to this. In the above embodiment, the gap between the right wall 25 of the lower case 20 and the upper case 30 is sealed by the rubber member 13, but the gap between the side wall (second side wall) of the lower case member and the upper case member is interposed. The configuration of the sealed member to be mounted is not limited to that described above. In the above embodiment, the rubber member 13 is supported by the through hole 250a of the protruding portion 250 of the lower case 20, but the configuration of the supporting portion of the seal member is not limited to this. In the above embodiment, the rear end portion of the upper case 30 is provided with a through hole 31b for fixing the upper case 30 to the upper surface of the front bulkhead 5, but the configuration of the fixing portion is not limited to this. In the above embodiment, the rubber member 14 for sealing the gap with the upper surface of the front bulkhead 5 is provided at the bottom of the rear end portion of the upper case 30, but the structure of the sealing member is not limited to that described above.

In the above embodiment, the cover member 4 extending in the vehicle width direction from the rear of the air introduction port 1a to the lower side of the lower case 20 is provided in the front space 8 behind the front bumper 1, and is rearward and upper of the cover member 4. Although the air was allowed to flow along the cover member 4, the configuration of the cover member (air guide member) is not limited to this. For example, the cover member may be configured so that air flows in the left-right direction or the up-down direction along the front surface of the cover member.

The above description is merely an example, and the present invention is not limited to the above-described embodiments and modifications as long as the features of the present invention are not impaired. It is also possible to arbitrarily combine one or a plurality of the above-described embodiments and the modified examples, and it is also possible to combine the modified examples.

1 Front bumper, 1a Air inlet, 4 Cover member, 5 Front bulkhead, 6 Engine room, 7 Engine, 8 Front space, 9 Aisle forming member, 10 Air intake unit, 13, 14 Rubber member, 20 Lower case, 21 Bottom wall, 22 front wall, 23 rear wall, 24 left wall, 25 right wall, 27 top opening, 28 air intake, 30 top case, 33 bottom opening, 35 air outlet, 100 vehicle intake, PA1 1st interior Passage, PA2 2nd internal passage

Claims (7)

A partition member that constitutes the front end of the accommodation space in which the internal combustion engine mounted on the vehicle is accommodated,
A front bumper that is placed in front of the partition member and has an air inlet.
Facing the front space between the partition wall member and the front bumper, the air inlet is arranged on one side in the vehicle width direction from the center in the vehicle width direction, and the air introduced through the air introduction port is taken in. Air intake unit and
A vehicle intake device including a passage forming member that forms an intake passage from the air intake unit to the internal combustion engine.
The air intake unit has an air intake port facing the front space and an air outlet connected to the intake passage, and forms an internal passage from the air intake port to the air outlet. Consists of
The vehicle intake device is characterized in that the air intake port is provided on one side surface of the air intake unit in the vehicle width direction. In the vehicle intake device according to claim 1,
The air intake unit has a lower case member having an upper surface opening on the upper surface and an upper case member having a bottom surface opening communicating with the upper surface opening on the bottom surface.
The lower case member has the side surface in which the air intake port is provided on one side in the front-rear direction and the other side in the front-rear direction is closed.
The vehicle intake device is characterized in that the upper case member has a rear surface provided with the air outlet. A partition member that constitutes the front end of the accommodation space in which the internal combustion engine mounted on the vehicle is accommodated,
A front bumper that is placed in front of the partition member and has an air inlet.
Facing the front space between the partition wall member and the front bumper, the air inlet is arranged on one side in the vehicle width direction from the center in the vehicle width direction, and the air introduced through the air introduction port is taken in. Air intake unit and
A vehicle intake device including a passage forming member that forms an intake passage from the air intake unit to the internal combustion engine.
The air intake unit is
A lower case member having an air intake port facing the front space and an upper surface opening on the upper surface,
It has an upper case member having an air outlet connected to the passage forming member and having a bottom opening communicating with the top opening on the bottom surface.
The lower case member has a bottom wall, a front portion and a rear portion of the bottom wall, one end in the vehicle width direction, and a vehicle width direction so as to form a first internal passage from the air intake port to the upper surface opening. It has a front wall, a rear wall, a first side wall and a second side wall, which are erected from the other end, respectively, and the air intake port is opened on one side in the front-rear direction of the first side wall.
The upper case member is characterized in that it has the air outlet on the rear surface and forms a second internal passage communicating with the first internal passage from the bottom opening to the air outlet. Vehicle intake system. In the vehicle intake device according to claim 3,
The air intake unit is a vehicle intake device further comprising a seal member interposed between the second side wall of the lower case member and the upper case member. In the vehicle intake device according to claim 4,
The lower case member has a support portion that supports the seal member, and has a support portion.
The seal member extends above the second side wall of the lower case member to the other side in the vehicle width direction.
The vehicle intake device is characterized in that the upper case member has a protruding portion protruding downward so as to press the seal member downward on the other side in the vehicle width direction from the second side wall. In the vehicle intake device according to any one of claims 2 to 5.
The rear end portion of the upper case member has a fixing portion fixed to the upper surface of the partition wall member, and the bottom portion on the rear end side has a sealing member for sealing a gap with the upper surface of the partition wall member. A featured vehicle intake system. In the vehicle intake device according to any one of claims 2 to 6.
Further, a wind guide member extending in the vehicle width direction from the rear of the air inlet to the lower part of the lower case member in the front space is further provided.
The vehicle intake device is characterized in that the air intake port is provided from the front end portion of the lower case member to the rear of the rear end portion of the upper surface of the wind guide member located below the lower case member.

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