Water-proof structure for intake system
The water-prevention structure for intake systems in vehicles addresses the issue of water ingress during both forward and reverse movements by employing a panel and cover member with multiple walls and a labyrinth design to shield water droplets, ensuring effective protection in flooded conditions.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SUZUKI MOTOR CORP
- Filing Date
- 2024-12-17
- Publication Date
- 2026-06-29
AI Technical Summary
Conventional intake duct designs in vehicles are susceptible to water ingress during both forward and reverse movement, particularly in flooded conditions, as the intake port is positioned to prevent water entry during forward movement but not during reverse movement.
A water-prevention structure for the intake system comprising a vehicle panel positioned in front of the intake duct, a cover member with horizontal, downward, and upward walls extending along the intake duct, and a labyrinth-like configuration to shield water droplets from various directions, ensuring water is prevented from entering the intake port during both forward and reverse vehicle movements.
Effectively prevents water from entering the intake duct during both forward and reverse movements in flooded conditions by utilizing a comprehensive shielding mechanism that includes a cover member with multiple walls and a labyrinth structure to guide and block water droplets.
Smart Images

Figure 2026105998000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a water protection structure for an intake device.
Background Art
[0002] In Patent Document 1, in a cab-over type automobile, for the purpose of preventing water from easily entering the intake duct during running of the crown water channel or the like, the intake port of the intake duct is opened in the vehicle body outer side direction at a position behind the radiator. An intake port structure of an intake device is disclosed.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, in the conventional technology, since the intake port of the intake duct is arranged behind the radiator and the intake port is opened toward the vehicle body outer side, it is possible to prevent water from entering during vehicle forward movement, but there is a risk that water may enter the intake port during vehicle reverse movement.
[0005] The present invention has been made paying attention to the above problems, and an object thereof is to provide a water protection structure for an intake device that can prevent water from entering the intake port of the intake duct both during vehicle forward movement and vehicle reverse movement in a crown water channel.
Means for Solving the Problems
[0006] The present invention relates to a water-prevention structure for an intake system mounted on a vehicle having a body frame extending in the longitudinal direction of the vehicle below the vehicle floor, and which is located below the vehicle floor and outward in the vehicle width direction of the vehicle frame, and which has an intake duct for taking in air to be supplied to the engine, wherein a vehicle panel is arranged in front of the intake duct, extending in the vehicle width direction and the vehicle vertical direction, and facing the intake duct in the longitudinal direction of the vehicle, and the intake duct has a duct portion extending in the longitudinal direction of the vehicle, and the vicinity of the rear of the vehicle panel at the front end of the duct portion The duct has an air intake opening facing forward at a certain position, and a cover member positioned in a region including below the air intake and outward in the vehicle width direction of the duct, wherein the cover member has a horizontal wall extending outward in the vehicle longitudinal direction and in the vehicle width direction along the lower end of the side surface outward in the vehicle width direction of the duct, with its front end positioned near the air intake, a downward wall extending from the front end of the horizontal wall to a position below the air intake, and an upward wall extending upward from the rear end of the horizontal wall along the side surface outward in the vehicle width direction of the duct. [Effects of the Invention]
[0007] Thus, according to the present invention, it is possible to provide a water-prevention structure for an intake system that can prevent water from entering the intake port of the intake duct both when the vehicle is moving forward and when the vehicle is moving backward in a flooded road. [Brief explanation of the drawing]
[0008] [Figure 1] Figure 1 is a right side view of a vehicle equipped with a water-prevention structure for an intake system according to one embodiment of the present invention. [Figure 2] Figure 2 is a front and top perspective view of an intake duct equipped with a water-repellent structure for an intake device according to one embodiment of the present invention. [Figure 3] Figure 3 is a rear and bottom perspective view of an intake duct equipped with a water-repellent structure for an intake device according to one embodiment of the present invention. [Figure 4] Figure 4 is a bottom view of an intake duct equipped with a water-repellent structure for an intake device according to one embodiment of the present invention. [Figure 5]Figure 5 is a front view of an intake duct equipped with a water-repellent structure for an intake device according to one embodiment of the present invention. [Figure 6] Figure 6 is a cross-sectional view of the intake duct shown in Figure 5, taken along the VI-VI line. [Figure 7] Figure 7 is a rear and top perspective view of an intake duct equipped with a water-repellent structure for an intake device according to one embodiment of the present invention. [Modes for carrying out the invention]
[0009] A water-resistant structure for an intake system according to one embodiment of the present invention is mounted on a vehicle having a vehicle frame that extends in the longitudinal direction of the vehicle below the vehicle floor, and is located below the vehicle floor and outward in the vehicle width direction of the vehicle frame, and is a water-resistant structure for an intake system having an intake duct that takes in air to be sent to the engine, wherein a vehicle panel is arranged in front of the intake duct, extending in the vehicle width direction and the vehicle vertical direction, and facing the intake duct in the vehicle longitudinal direction, and the intake duct has a duct portion that extends in the vehicle longitudinal direction, and at the front end of the duct portion The air intake device has an air intake opening facing forward at a position near the rear of the vehicle body panel, and a cover member positioned in a region including below the air intake and outward in the vehicle width direction of the duct portion. The cover member is characterized by having a horizontal wall that extends outward in the vehicle longitudinal direction and in the vehicle width direction along the lower end of the side surface outward in the vehicle width direction of the duct portion, with its front end positioned near the air intake, a downward wall that extends from the front end of the horizontal wall to a position below the air intake, and an upward wall that extends upward from the rear end of the horizontal wall along the side surface outward in the vehicle width direction of the duct portion. As a result, the water ingress prevention structure of the air intake device according to one embodiment of the present invention can prevent water from entering the air intake of the air intake duct both when the vehicle is moving forward and when the vehicle is moving backward in a flooded road. [Examples]
[0010] The following describes a water-prevention structure for an intake device according to one embodiment of the present invention, with reference to the drawings. Figures 1 to 7 show the water-prevention structure for an intake device according to one embodiment of the present invention. In Figures 1 to 7, the directions indicated by up, down, right, and left are the directions as viewed from the driver's seat.
[0011] First, let's describe the configuration. In Figure 1, the vehicle 1 is equipped with a cabin 2 located above the front wheels 4 and a cargo bed 3 located above the rear wheels 5. The cabin 2 is equipped with a driver's seat (not shown) where the driver sits. The cargo bed 3 has a vehicle floor 3A, which constitutes a floor surface (so-called floor panel) on which cargo (not shown) is placed.
[0012] Vehicle 1 is equipped with a pair of body frames 6 on the left and right sides. The body frames 6 extend in the longitudinal direction of the vehicle below the body floor 3A and support the body floor 3A. The body frames 6 have an inclined portion 6A that extends downwards towards the front near the front end of the body floor 3A. The body frames 6 also extend in the longitudinal direction of the vehicle below the cabin 2 in front of the inclined portion 6A and support the cabin 2.
[0013] A shielding wall 7 is provided above the inclined portion 6A of the vehicle frame 6. The shielding wall 7 consists of a flat plate-shaped member extending in the front-rear and up-down directions, and closes the gap between the inclined portion 6A and the vehicle floor 3A above it.
[0014] Vehicle 1 is equipped with an engine 10. The engine 10 is located below the cabin 2, inward in the vehicle width direction of the body frame 6, and behind the front wheels 4. Therefore, the cabin 2 and the driver's seat are located above the front end of the engine 10. In this way, Vehicle 1 is configured as a so-called cab-over type truck.
[0015] Vehicle 1 is equipped with an intake duct 20 that takes in air to be supplied to the engine 10. The intake duct 20 constitutes the intake device in the present invention. The intake duct 20 extends in the longitudinal direction below the vehicle floor 3A and outward in the vehicle width direction of the vehicle frame 6.
[0016] In this embodiment, the intake duct 20 is disposed near the right side surface of the right vehicle body frame 6. Here, "outward in the vehicle width direction" refers to the side farther from the center in the vehicle width direction. Also, "inward in the vehicle width direction" refers to the side closer to the center in the vehicle width direction. The center in the vehicle width direction is the intermediate position between the left and right vehicle body frames 6. When the intake duct 20 is used as a reference, the outward side in the vehicle width direction of the intake duct 20 is the right side, and the inward side in the vehicle width direction is the left side.
[0017] A vehicle body panel 11 is disposed in front of the intake duct 20. The vehicle body panel 11 is formed of a substantially flat plate-shaped member in the shape of a rectangle extending in the vehicle width direction and the vehicle vertical direction, and faces the intake duct 20 in the vehicle longitudinal direction. The vehicle body panel 11 is fixed to the rear surface 2A of the cabin 2. Here, the rear surface 2A of the cabin 2 is an outer plate that covers the cabin 2 from the rear.
[0018] The intake duct 20 has a duct portion 21 extending in the vehicle longitudinal direction and an intake port 22 that opens forward at a position near the rear of the vehicle body panel 11 at the front end portion of the duct portion 21. The duct portion 21 has a rectangular cross-sectional shape, and the intake port 22 is formed in a rectangle when viewed from the front.
[0019] A connecting hose 12 is connected to the rear end portion of the duct portion 21. The connecting hose 12 connects the intake duct 20 and the air cleaner 8, and guides the air taken in by the intake duct 20 to the engine 10 via the air cleaner 8.
[0020] As shown in FIG. 2, a connection port 23 for discharging air is formed at the rear end portion of the duct portion 21, and the connecting hose 12 is connected to this connection port 23.
[0021] A resonator 24 is formed at the lower portion near the rear end portion of the duct portion 21. The resonator 24 communicates with the internal space of the duct portion 21 and reduces intake noise by air column resonance.
[0022] The intake duct 20 has a support portion 26. The support portion 26 is continuous with the lower surface of the duct portion 21 and the front surface of the resonator 24. The support portion 26 extends forward below the duct portion 21 and has a mounting hole 26A at its front end. The intake duct 20 is fastened to the side surface of the vehicle frame 6 at the mounting hole 26A of the support portion 26.
[0023] As shown in Figure 1, in this embodiment, the space in front of the air intake 22 is covered from above by the vehicle floor 3A. This prevents water droplets splashing from above from entering the air intake 22. In addition, the vehicle panel 11 is positioned near the front of the air intake 22 with a predetermined space between them, and the space in front of the air intake 22 is covered from the front by the vehicle panel 11. This prevents water droplets splashing from the front from entering the air intake 22 when the vehicle moves forward in a flooded road.
[0024] Furthermore, outer body panels 9 extending to the rear are formed at both ends in the vehicle width direction of the rear surface 2A of the cabin 2. The outer body panels 9 cover the space between the air intake 22 and the body panel 11 from the right (outward in the vehicle width direction). This prevents water droplets splashing from the front and right from entering the air intake 22 when the vehicle moves forward in a flooded road.
[0025] Furthermore, the space between the air intake 22 and the vehicle body panel 11 is covered from the left (inward in the vehicle width direction) by the vehicle body frame 6 and the shielding wall 7. This prevents water droplets splashing from the front and left when the vehicle is moving forward in a flooded road from entering the air intake 22.
[0026] On the other hand, when a vehicle is reversing in a flooded road, water droplets are scattered from the rear and below toward the space in front of the air intake 22. Therefore, it is necessary to shield these water droplets and prevent them from entering the air intake 22. Here, shielding the water droplets means separating the water from the air containing the droplets and allowing only the air to pass through.
[0027] The intake duct 20 has a cover member 30. The cover member 30 is positioned in an area that includes below the intake port 22 and outward in the vehicle width direction of the duct portion 21. This cover member 30 prevents water from entering the intake port 22 through the space between the intake port 22 and the vehicle body panel 11 when the vehicle is reversing in a flooded road.
[0028] As shown in Figures 2, 3, 4, and 5, the cover member 30 has a horizontal wall 31. The horizontal wall 31 extends in the longitudinal and transverse directions of the vehicle and outward in the vehicle width direction along the lower end of the side surface of the duct section 21 that is outward in the vehicle width direction. The front end 31A of the horizontal wall 31 is located near the air intake 22. In other words, the horizontal wall 31 extends from near the air intake 22 along the lower end of the side surface of the duct section 21 that is outward in the vehicle width direction and outward in the vehicle width direction.
[0029] The cover member 30 has a downward wall 33. The downward wall 33 extends from the front end 31A of the horizontal wall 31 to a position below the air intake 22. Here, the downward wall 33 includes a portion located below the horizontal wall 31 in the vehicle width direction and a portion located below the air intake 22 in the vehicle width direction.
[0030] The cover member 30 has an upward wall 32. The upward wall 32 extends upward from the rear end of the horizontal wall 31 along the side surface of the duct section 21 that is outward in the vehicle width direction.
[0031] The cover member 30 has an inclined portion 34 at the upper end of the descending wall 33 that slopes upward towards the rear of the vehicle. Here, the angle of inclination of the inclined portion 34 is not constant, but as a whole it slopes upward towards the rear of the vehicle.
[0032] The cover member 30 has a first side wall 35 extending in the vertical direction of the vehicle at the ends of the inclined portion 34 and the descending wall 33 that are outward in the vehicle width direction. The upper end of the first side wall 35 is continuous with the right end of the inclined portion 34, and the front end of the first side wall 35 is continuous with the right end of the descending wall 33.
[0033] The cover member 30 is provided with a second side wall 36 that is L-shaped in plan view, located on the upper surface of the horizontal wall 31 at a position outward in the vehicle width direction from the air intake port 22. The second side wall 36 has a rear side wall portion 36A that extends outward in the vehicle width direction from the duct portion 21, and a front side wall portion 36B that bends in an L-shape from the outward end of the rear side wall portion 36A in the vehicle width direction and extends forward of the vehicle, covering the air intake port 22 from the side.
[0034] The intake duct 20 has a bracket 27. The bracket 27 extends forward from the lower surface of the duct portion 21 and is connected to the vehicle body panel 11. The bracket 27 has a mounting hole 27A at its front end and is connected to the vehicle body panel 11 by a bolt (not shown) fastened to this mounting hole 27A.
[0035] A mounting hole 33A is formed in the lower wall 33 of the cover member 30. The lower wall 33 is connected to the vehicle body panel 11 by bolts fastened to the mounting hole 27A, with the mounting hole 33A overlapping the front side of the mounting hole 27A of the bracket 27.
[0036] The cover member 30 is formed separately from the intake duct 20 and is fixed to the bracket 27. More specifically, the cover member 30 has a flange portion 40 that extends downward from the lower part of the inward end of the horizontal wall 31 in the vehicle width direction, and is fixed to the bracket 27 by two rivets 41 at this flange portion 40.
[0037] The cover member 30 has a clamp portion 37 that locks around the duct portion 21. The right end of the clamp portion 37 is continuous with the rising wall 32. In this way, the cover member 30 is fixed to the duct portion 21 at the clamp portion 37.
[0038] As shown in Figure 2, the upper surface of the horizontal wall 31 has an inner plane 42 located behind the second side wall 36 on the inward side in the vehicle width direction, and an outer plane 43 located on the outward side in the vehicle width direction of the inner plane 42. The outer plane 43 is located at a lower position than the inner plane 42. A step portion 44 is formed between the outer plane 43 and the inner plane 42. The step portion 44 is a wall surface that extends vertically and is continuous with the outer wall surface of the front side wall portion 36B of the second side wall 36. The provision of this step portion 44 prevents water droplets adhering to the upper surface of the outer plane 43 from moving over the step portion 44 and moving to the inner plane 42. Therefore, it is possible to prevent water droplets from approaching the air intake port 22 by traveling along the inner plane 42. Here, water droplets that have moved forward from the upper surface of the outer plane 43 are discharged by flowing down from the inclined portion 34 along the descending wall 33 or the first side wall 35. Water droplets that move outward (to the right) in the vehicle width direction from the upper surface of the outer plane 43 are discharged by flowing downward.
[0039] A dike portion 45 is formed on the upper surface of the horizontal wall 31, projecting upward. The dike portion 45 extends rearward from the left end of the rear side wall portion 36A near the inward end in the vehicle width direction of the upper surface of the inner plane 42 of the horizontal wall 31. The front end of the dike portion 45 is continuous with the left end of the rear side wall portion 36A of the second side wall 36. The presence of this dike portion 45 prevents water droplets adhering to the upper surface of the inner plane 42 from overflowing the dike portion 45 and approaching the air intake port 22.
[0040] As described above, in this embodiment, a vehicle body panel 11 is positioned in front of the intake duct 20, extending in the vehicle width direction and the vehicle vertical direction, and facing the intake duct 20 in the vehicle longitudinal direction. The intake duct 20 includes a duct portion 21 extending in the vehicle longitudinal direction, an intake port 22 that opens facing forward at a position near the rear of the vehicle body panel 11 at the front end of the duct portion 21, and a cover member 30 positioned in a region including below the intake port 22 and outward in the vehicle width direction of the duct portion 21. The cover member 30 includes a horizontal wall 31 that extends outward in the vehicle's longitudinal and vehicle width directions along the lower end of the side surface of the duct portion 21 that is outward in the vehicle width direction, with its front end 31A positioned near the air intake port 22; a downward wall 33 that extends from the front end 31A of the horizontal wall 31 to a position below the air intake port 22; and an upward wall 32 that extends upward from the rear end of the horizontal wall 31 along the side surface of the duct portion 21 that is outward in the vehicle width direction.
[0041] As a result, the air intake 22 opens facing forward at a position near the rear of the vehicle body panel 11, so that when the vehicle moves forward in a flooded road, water splashing from the front towards the air intake 22 is shielded by the vehicle body panel 11, preventing water from entering the air intake 22. Also, when the vehicle moves backward in a flooded road, as shown in Figure 6, water droplets (see arrow W1) splashing from below and behind the vehicle toward the air intake 22 are shielded by the rear surface of the descending wall 33 and the lower surface of the horizontal wall 31, preventing water from entering the air intake 22. Furthermore, when the vehicle moves backward in a flooded road, as shown in Figure 7, water droplets (see arrow W2) splashing from below and behind the vehicle toward the air intake 22 are shielded by the rear surface of the rising wall 32, preventing water from entering the air intake 22. As a result, it is possible to prevent water from entering the air intake 22 of the intake duct 20 both when the vehicle moves forward and backward in a flooded road.
[0042] Furthermore, in this embodiment, the cover member 30 has an inclined portion 34 at the upper end of the descending wall 33 that slopes upward towards the rear of the vehicle.
[0043] As a result, as shown in Figure 6, water droplets (see arrow W1) scattered from below and behind the vehicle toward the air intake 22 can be smoothly guided toward the rear of the vehicle by the lower surface of the inclined section 34 between the descending wall 33 and the horizontal wall 31, preventing water droplets from scattering in front of the air intake 22. Therefore, water can be prevented from entering the air intake 22.
[0044] Furthermore, in this embodiment, the cover member 30 has a first side wall 35 extending in the vertical direction of the vehicle at the ends of the inclined portion 34 and the descending wall 33 that are outward in the vehicle width direction.
[0045] As a result, as shown in Figure 7, the first side wall 35 can block water droplets (see arrow W4) that would otherwise pass below and to the side of the horizontal wall 31 and scatter towards the air intake 22, thus preventing water from reaching the air intake 22.
[0046] In this embodiment, the cover member 30 is provided with a second side wall 36 on the upper surface of the horizontal wall 31 at a position outward in the vehicle width direction of the air intake 22. The second side wall 36 has a rear side wall portion 36A that extends outward in the vehicle width direction from the duct portion 21, and a front side wall portion 36B that bends in an L-shape from the outward end of the rear side wall portion 36A in the vehicle width direction and extends forward of the vehicle, covering the air intake port 22 from the side.
[0047] As a result, as shown in Figure 7, water droplets (see arrow W3) scattered from the rear toward the area around the air intake 22 can be shielded by the rear surface of the rear side wall portion 36A of the second side wall 36. In other words, the rising wall 32 and the rear side wall portion 36A form a labyrinth structure, and even if the rising wall 32 cannot shield all of the water droplets (see arrow W2) scattered from the rear of the horizontal wall 31 toward the air intake 22, the rear side wall portion 36A can shield water droplets (see arrow W3) that go over the top of the rising wall 32 toward the air intake 22, preventing water from reaching the air intake 22. Also, as shown in Figure 7, water droplets (see arrow W5) scattered from the side toward the area around the air intake 22 can be shielded by the front side wall portion 36B of the second side wall 36. In other words, the first side wall 35 and the front side wall portion 36B form a labyrinth structure, and even if the first side wall 35 cannot block all of the water droplets (see arrow W4) that are scattered from the side toward the air intake port 22, the front side wall portion 36B can block the water droplets (see arrow W5) that go over the top of the first side wall 35 toward the air intake port 22, thereby preventing water from reaching the air intake port 22.
[0048] In this embodiment, the intake duct 20 has a bracket 27 that extends from the lower surface of the duct portion 21 toward the front of the vehicle and is connected to the vehicle body panel 11, and the cover member 30 is formed separately from the intake duct 20 and is fixed to the bracket 27.
[0049] As a result, by fixing the cover member 30 to the bracket 27 of the intake duct 20, the cover member 30 can be firmly fixed to the intake duct 20.
[0050] Furthermore, in this embodiment, the cover member 30 has a clamp portion 37 that is locked around the duct portion 21, and the clamp portion 37 is continuous with the rising wall 32.
[0051] This allows the rising wall 32 of the cover member 30 to be firmly fixed to the intake duct 20 by the clamp portion 37 which is continuous with the rising wall 32.
[0052] In this embodiment, the upper surface of the horizontal wall 31 has an inner plane 42 located behind the second side wall 36 on the inward side in the vehicle width direction, an outer plane 43 located at a lower position than the inner plane 42 on the outward side in the vehicle width direction of the inner plane 42, and a stepped portion 44 formed at the boundary between the inner plane 42 and the outer plane 43.
[0053] This prevents water droplets adhering to the upper surface of the outer plane 43 from crossing the stepped portion 44 and moving to the inner plane 42, thereby preventing water droplets from approaching the air intake port 22 via the inner plane 42.
[0054] In this embodiment, a dam portion 45 that protrudes upward is formed on the upper surface of the horizontal wall 31, and the dam portion 45 extends rearward from the left end of the rear side wall portion 36A.
[0055] This prevents water droplets adhering to the upper surface of the inner plane 42 from overflowing the dam 45 and approaching the air intake port 22.
[0056] While embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that modifications can be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims. [Explanation of symbols]
[0057] 1 vehicle 3A Car body floor 6. Vehicle frame 10 Engines 11 Body panels 20 Intake duct 21 Duct section 22 Intake port 27 Bracket 30 Cover component 31 horizontal wall 31A Front end 32 Rising wall 33 descending wall 34 Slope 35 First side wall 36. Second side wall 36A Rear wall part 36B Front wall part 37 Clamping part 42 Inner plane 43 Outer plane 44 Step part 45 Dike part
Claims
1. It is mounted on a vehicle that has a body frame that extends in the longitudinal direction of the vehicle below the vehicle floor, A water-prevention structure for an intake system, which is located below the vehicle floor and outward in the vehicle width direction of the vehicle frame, and includes an intake duct for taking in air to be supplied to the engine, A body panel is positioned in front of the intake duct, extending in the vehicle width direction and the vehicle height direction, and facing the intake duct in the vehicle front-rear direction. The intake duct comprises a duct portion extending in the longitudinal direction of the vehicle, an intake port opening forward at a position near the rear of the vehicle body panel at the front end of the duct portion, and a cover member positioned in a region including below the intake port and outward in the vehicle width direction of the duct portion. The cover member is A horizontal wall extends along the lower end of the side surface of the duct portion on the side facing outward in the vehicle width direction, extending outward in the vehicle longitudinal direction and in the vehicle width direction, with its front end positioned near the air intake port, A descending wall extending from the front end of the horizontal wall to a position below the air intake, An intake device water-prevention structure characterized by having an upward wall extending upward from the rear end of the horizontal wall along the side surface of the duct portion that is outward in the vehicle width direction.
2. The water-prevention structure for an intake device according to claim 1, characterized in that the cover member has an inclined portion at the upper end of the descending wall that slopes upward toward the rear of the vehicle.
3. The water-prevention structure for an intake device according to claim 2, characterized in that the cover member has a first side wall extending in the vertical direction of the vehicle at the end of the inclined portion and the downward wall that is outward in the vehicle width direction.
4. The water-prevention structure for an air intake device according to claim 1, characterized in that the cover member has a second side wall having a rear side wall portion extending outward in the vehicle width direction from the duct portion, and a front side wall portion that bends in an L-shape from the end of the rear side wall portion outward in the vehicle width direction and extends forward of the vehicle, covering the air intake port from the side, the second side wall provided on the upper surface of the horizontal wall at a position outward in the vehicle width direction of the air intake port.
5. The intake duct has a bracket that extends from the lower surface of the duct portion toward the front of the vehicle and is connected to the vehicle body panel. The water-prevention structure for an intake device according to claim 1, characterized in that the cover member is formed separately from the intake duct and fixed to the bracket.
6. The cover member has a clamp portion that is secured around the duct portion, The water-prevention structure for an air intake device according to claim 5, characterized in that the clamp portion is continuous with the rising wall.
7. The water-prevention structure for an intake device according to claim 4, characterized in that the upper surface of the horizontal wall has an inner plane located on the inward side in the vehicle width direction and behind the second side wall, an outer plane located on the outward side in the vehicle width direction of the inner plane and at a lower position than the inner plane, and a stepped portion formed at the boundary between the inner plane and the outer plane.
8. An upwardly projecting embankment is formed on the upper surface of the aforementioned horizontal wall. The water-prevention structure for an air intake device according to claim 4, characterized in that the embankment portion extends rearward from the left end of the rear side wall portion.