JP6308271B2 - Vehicle cowl structure - Google Patents

Description

  The technology disclosed herein relates to a cowl structure of a vehicle.

  Patent Document 1 describes an outside air introduction structure for an automobile in which an outside air inlet is provided at one end in the vehicle width direction of the cowl cover, and an air intake port communicating with the blower unit is provided at the other end in the vehicle width direction of the dash panel. Has been. In the structure described in Patent Document 1, a duct extending forward is fixed to the air inlet, and the duct opens forward at a position ahead of the outside air intake. With this structure, the air flowing in from the outside air inlet flows in the vehicle width direction along the dash panel and flows from the opening of the duct to the air inlet, but the water that has entered along with the air from the outside air inlet is Since most of them fall on the way and hit the side wall surface of the duct, water can be prevented from entering through the opening of the duct.

Japanese Patent No. 3613060

  In the structure described in Patent Document 1, water that has entered along with air from the outside air intake is prevented from entering the duct from the opening of the duct, but water that does not flow from the outside air inlet does not enter the duct. No measures have been taken to prevent entry into the duct from the opening.

  The technology disclosed herein has been made in view of such a point, and an object thereof is to prevent water from entering a duct connected to an outside air introduction port.

  The vehicle cowl structure disclosed herein includes a cowl grille configured to spread from the lower edge of the windshield toward the front of the vehicle, and an outside air inlet provided in a dash lower separating the engine room and the vehicle compartment. And a duct configured to form part of an air passage connected to the.

  Further, a drain port and an intake port positioned in front of the drain port are provided in an upper surface portion constituting the upper surface of the cowl grill so as to penetrate in a thickness direction, and the upper surface portion of the cowl grill A blocking wall that separates the air passage connected to the intake port and the drain port is provided to extend downward from the lower surface of the upper surface portion between the intake port and the drain port on the lower surface. .

  According to this configuration, most of the water flowing along the windshield is discharged through the drain hole of the cowl grill.

  Further, the air flowing into the duct through the intake port flows from the rear to the front on the upper surface of the cowl grill and reaches the intake port. As the air flows, the water that moves from the rear to the front on the upper surface of the cowl grille is first discharged through the drain port. Therefore, it is possible to prevent water and air from entering from the intake port located in front of the drain port.

  Even if the water discharged through the drainage port travels forward along the lower surface of the upper surface portion of the cowl grille, it hits a blocking wall that separates the air passage from the drainage port. Since the water discharged through the drainage port is reliably separated from the air passage, water can be prevented from entering the duct, and water can also enter the outside air introduction port provided in the dash lower. To be prevented.

  The duct is disposed to extend in the front-rear direction below the upper surface portion of the cowl grille, and an upper partition that defines the upper surface of the duct is spaced below the upper surface portion of the cowl grille. And is configured to partition a part of the air passage, and the blocking wall is provided to connect between the upper surface portion of the cowl grill and the upper partition wall of the duct. Also good.

  By doing so, the upper partition wall that defines the upper surface of the duct defines an air passage that leads to the intake port together with the upper surface portion of the cowl grille. The blocking wall connects the upper partition of the duct and the upper surface of the cowl grill so that the air passage and the drain are completely separated. It is reliably prevented that water discharged through the drain port enters the air passage.

  The cowl grill has a closed cross-sectional structure surrounded by the upper surface portion, a lower surface portion disposed at a lower side of the upper surface portion, and a side surface portion connecting the upper surface portion and the lower surface portion. The duct may be provided integrally with the cowl grill by being partly partitioned by the lower surface portion and the side surface portion in the closed cross-sectional structure of the cowl grille. Good.

  According to this configuration, the cowl grill is so-called a hollow box shape, and a part of the duct is partitioned by the lower surface portion and the side surface portion of the cowl grill so that the duct is integrated with the cowl grill.

  By integrating the cowl grille and the duct to form an air passage leading to the outside air inlet, even if water enters along with air from the inlet, By performing gas-liquid separation, it is possible to supply air containing no water to the outside air inlet.

  The cowl grill may have a drainage groove extending in the vehicle width direction below the drainage port in the closed cross-sectional structure.

  By doing so, the water that has passed through the drain outlet is discharged along the drain groove in the vehicle width direction.

  The bottom surface of the drainage groove may be inclined downward toward the outside in the vehicle width direction.

  By doing so, the water that has entered the drainage channel is discharged to the outside in the vehicle width direction along the bottom surface of the inclined drainage channel.

  In addition, since the drainage port and the duct are separated by the upper partition wall, it is possible to reliably prevent water that has passed through the drainage port from entering the duct in the cowl grill that integrates the duct. Become. Gas-liquid separation in the cowl grill is performed reliably.

  The drainage port includes a first drainage port and a second drainage port located in front of the first drainage port and rearward of the intake port, and on an upper surface of the upper surface portion of the cowl grille. A rising portion that is inclined upward as it goes forward may be provided between the first drain port and the second drain port.

  By doing so, the water moving from the rear to the front along the upper surface of the cowl grill with the flow of air is first discharged through the first drainage port. Since the second drainage port is provided in front of the first drainage port, the water that has not been discharged from the first drainage port is also discharged through the second drainage port. By providing a plurality of drainage ports on the upper surface of the cowl grille, it is possible to prevent water from entering from the intake port together with air.

  Moreover, since the rising part which inclined upward as it goes ahead is provided between the 1st drainage port and the 2nd drainage port, water is isolate | separated when the flow of air collides with a rising part. Moreover, when the air flows upward along the rising portion, the water falls by its own weight. Thus, it is possible to separate the gas and liquid before reaching the intake port, and water can be prevented from entering from the intake port together with air.

  The intake port extends forward from a rear end edge provided with the blocking wall so as to ensure a predetermined opening area, and the upstream portion of the air passage connected to the intake port and the duct It is good also as being connected in the front-end part of the said inlet port.

  By doing so, it is possible to secure an opening area having a size necessary for satisfying the requirements for air conditioning in the passenger compartment.

  The air that has flowed in through the intake port flows forward in the upstream portion of the air passage, then enters the duct, and flows backward toward the outside air inlet provided in the dash lower. Even if water enters through the air intake, the water is separated from the upstream part of the air passage until it flows through the duct and reaches the outside air inlet, and the outside air inlet contains water. Realize no air supply.

  The upstream portion of the air passage connected to the intake port and the duct may be configured such that opening portions that open downward are connected to each other.

  By doing so, when air flows in from the opening of the downward duct, the water falls by its own weight, and water is prevented from flowing into the duct.

  An engine is arranged vertically in the engine room, and a battery is disposed between the dash lower and the suspension housing on one side in the vehicle width direction with the engine sandwiched therebetween. The engine extends from the bottom edge of the windshield to the suspension housing so as to cover the upper side of the battery on one side of the engine, and the duct extends in the front-rear direction on the upper side of the battery. It is good also as extending and arrange | positioning.

  The cowl structure described above has a configuration in which the battery is disposed between the dash lower and the suspension housing on one side in the vehicle width direction across the engine in the engine room in which the engine is vertically disposed. By covering the upper side of the battery with the cowl grille, it is possible to prevent the upper surface of the battery from getting wet.

  In addition, as described above, since water is prevented from entering the duct, both supplying air that does not contain water to the outside air inlet and preventing water from being applied to the upper surface of the battery are compatible. Can do.

  As described above, according to the cowl structure of the vehicle, it is possible to prevent water from entering the duct connected to the outside air inlet.

FIG. 1 is a perspective view showing a cowl structure of a vehicle. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a plan view of the cowl grill. FIG. 4 is a rear view of the cowl grill. 5 is a cross-sectional view taken along the line VV in FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a partially broken perspective view showing the vicinity of the intake port and the second drain port of the cowl grille in an enlarged manner.

  Hereinafter, an embodiment of a cowl structure of a vehicle will be described in detail based on the drawings. The following description is an example of a cowl structure of a vehicle. 1 shows a cowl structure of a vehicle to which the technology disclosed herein is applied, and FIG. 2 shows a II-II cross section of FIG. The cowl structure of the vehicle includes a cowl grill 1 configured to spread from the lower end edge of the windshield 61 indicated by a one-dot chain line in FIG. 1 toward the front of the vehicle. The lower end edge of the windshield 61 is supported by a dash upper 51 extending in the vehicle width direction. The dash upper 51 and the lower dash lower 52 constitute a dash panel 5 that separates the engine room 71 and the vehicle compartment 72.

  As shown in FIG. 2, the dash lower 52 is formed with an outside air introduction port 521 for taking in outside air for air conditioning in the passenger compartment 72. The outside air introduction port 521 is formed on one side of the dash lower 52 that extends in the vehicle width direction (that is, the right side when the vehicle front is viewed from inside the passenger compartment 72). A blower 59 communicating with the outside air introduction port 521 is disposed on the vehicle compartment 72 side of the dash lower 52. When the blower 59 is operated, outside air is introduced into the vehicle compartment 72 through the outside air introduction port 521.

  A front side frame 53 extends from the dash lower 52 toward the front of the vehicle in the engine room 71. Although only one front side frame 53 is illustrated in FIG. 1, two front side frames 53 are arranged at intervals in the vehicle width direction. Between the two front side frames 53, an engine 54 is disposed as shown by a one-dot chain line in FIG. In the configuration shown in FIG. 1, the engine 54 is arranged vertically so that a crankshaft (not shown) extends in the vehicle front-rear direction. This automobile is a front engine and a rear drive (so-called FR).

  A battery 55 is disposed on the right side in the vehicle width direction across the engine 54. Specifically, the battery 55 is provided between the front side frame 53 and the apron reinforcement 57 on the right side of the engine 54, and between the suspension housing 56 for supporting the front suspension and the dash lower 52. Arranged (see also FIG. 2). The battery 55 is disposed adjacent to the front side of the dash lower 52.

  As described above, the cowl grill 1 extends in the vehicle width direction along the lower end of the windshield 61 and is disposed so as to extend between the lower end of the windshield 61 and the suspension housing 56. As shown in FIG. 3, the cowl grill 1 has a shape that is symmetrical with respect to the vehicle width direction in plan view. More specifically, the cowl grill 1 includes a right trapezoidal portion 11 that is substantially trapezoidal in a plan view and extends between the lower end of the windshield 61 and the suspension housing 56 on the right side in the vehicle width direction. The left trapezoidal portion 12 and the right trapezoidal portion 11 and the left trapezoidal portion 12 are substantially trapezoidal in plan view and spread between the lower end of the windshield 61 and the suspension housing 56 (not shown). And a connecting portion 13 connected to each other in the vehicle width direction. The right trapezoidal portion 11 of the cowl grill 1 is disposed so as to cover the upper surface of the battery 55. The right trapezoidal portion 11 prevents the upper surface of the battery 55 from getting wet. Although not shown, a seal member that contacts the lower surface of the engine hood 63 is provided along the periphery of the cowl grill 1.

  The cowl grill 1 shown in FIG. 3 has a function of draining water flowing along the windshield 61, a function of guiding outside air to the outside air introduction port 521, and a function of separating water from outside air led to the outside air introduction port 521. It is configured to have three functions. Hereinafter, details of the structure of the cowl grill 1 will be described in detail with reference to the drawings.

  FIG. 3 is a plan view of the cowl grill 1, and FIG. 4 is a rear view of the cowl grill 1. FIG. 5 is a cross-sectional view of the cowl grill 1 (that is, a VV cross-sectional view of FIG. 3). As shown in FIG. 5, the cowl grill 1 includes an upper surface part 14 that constitutes an upper surface 141 of the cowl grill 1, a lower surface part 15 that is disposed below the upper surface part 14 at an interval, and an upper surface part 14. It has a closed cross-sectional structure surrounded by a side surface portion 16 that connects the lower surface portion 15. The cowl grill 1 is configured in a so-called hollow box shape.

  A first drain port 21 that opens to the upper surface 141 of the cowl grill 1 is provided at a rear end portion of the upper surface portion 14 (that is, a portion close to the windshield 61). As shown virtually in FIG. 2, the first drainage port 21 is located behind the engine hood 63 that covers the upper side of the engine room 71. Note that the rear end portion of the upper surface portion 14 is inclined downward as it goes forward.

  The first drain port 21 is provided so as to extend in the vehicle width direction over the entire cowl grille 1 from the right end of the right trapezoidal part 11 to the left end of the left trapezoidal part 12 via the connecting part 13. As shown in FIGS. 3 and 5, the first drain port 21 is configured in a mesh shape having a large number of through holes that penetrate the upper surface portion 14 in the thickness direction. 1, 2, and 7, illustration of the through hole is omitted, and the boundary of the first drain port 21 is indicated by a solid line.

  In the upper surface portion 14, a second drain port 22 that opens to the upper surface 141 of the cowl grill 1 is provided in front of the first drain port 21. As shown in FIG. 2, the second drain port 22 is located below the engine hood 63. On the upper surface 141 of the cowl grill 1, a rising portion 142 is provided between the first drain port 21 and the second drain port 22, which is inclined upward as it goes forward. On the upper surface 141 of the cowl grill 1, the rear end portion inclined downward and the rising portion 142 are substantially V-shaped in cross section.

  The second drain port 22 is located above the first drain port 21. On the upper surface 141, the front side of the rising portion 142 constitutes a forward inclined portion 143 that is inclined forward along the engine hood 63. The second drain port 22 is provided in the forward inclined portion 143.

  The second drain port 22 is formed only in the right trapezoidal portion 11 of the cowl grill 1. The second drain port 22 is provided extending in the vehicle width direction from the right end to the left end in the right trapezoidal portion 11.

  The upper surface portion 14 of the right trapezoidal portion 11 is provided with a recessed portion 144 that is recessed from the upper surface 141. The recessed portion 144 opens on the upper surface 141 in a substantially rectangular shape that is elongated in the vehicle width direction. The recessed portion 144 has a side wall extending downward from the opening edge of the upper surface 141 and a bottom wall connecting the lower ends of the side walls. The second drain port 22 is provided in the recessed portion 144. As shown in FIGS. 3 and 5, the second drain port 22 is configured in a mesh shape having a large number of through holes penetrating the upper surface portion 14 of the cowl grill 1 in the thickness direction on the bottom wall of the recessed portion 144. Yes. In addition, in FIG.1, FIG2 and FIG.7, illustration of the through-hole is abbreviate | omitted.

  In the upper surface portion 14, an intake port 23 that opens to the upper surface 141 of the cowl grill 1 is provided in front of the second drain port 22. The intake port 23 is located below the engine hood 63 as shown in FIG. That is, the intake port 23 is provided in the forward inclined portion 143 together with the second drain port 22.

  The intake port 23 is also formed only in the right trapezoidal portion 11 of the cowl grill 1, similarly to the second drain port 22. The air inlet 23 extends in the vehicle width direction and also in the front-rear direction so as to secure an opening area having a size necessary for satisfying the requirements related to air conditioning in the passenger compartment 72. Specifically, as shown in FIG. 3, the air inlet 23 has a substantially trapezoidal shape in plan view so as to correspond to the shape of the right trapezoidal portion 11. The intake port 23 extends in the front-rear direction from the vicinity of the second drainage port 22 to the vicinity of the front end of the right trapezoidal portion 11. As shown in FIGS. 3 and 5, the air inlet 23 is configured in a mesh shape having a large number of through holes that penetrate the upper surface portion 14 in the thickness direction. 1, 2, and 7, illustration of the through hole is omitted, and the boundary of the intake port 23 is indicated by a solid line.

  In the cowl grill 1 configured in a hollow box shape, a duct 3 configured to partition a part of an air passage connected to the outside air introduction port 521 with a partition wall is integrated with the cowl grill 1. Is formed. As shown in FIG. 2, the duct 3 is disposed so as to extend in the front-rear direction on the upper side of the battery 55 disposed below the cowl grill 1. As shown in FIG. 4, the rear end of the duct 3 (that is, the outlet 30) opens rearward on the rear surface of the cowl grill 1. The outlet 30 of the duct 3 has a substantially rectangular shape. The outlet 30 of the duct 3 communicates with the outside air introduction port 521.

  As described above, the duct 3 has a partition wall that defines an air passage. Specifically, a part of the lower surface of the duct 3 is defined by the lower surface portion 15 of the cowl grill 1, and a part of the side surface of the duct 3 is defined by the side surface portion 16 of the cowl grill 1. The upper surface of the duct 3 is partitioned by an upper partition wall 31 disposed in the cowl grill 1. As shown in FIG. 5, the upper partition wall 31 is disposed between the upper surface portion 14 and the lower surface portion 15 of the cowl grill 1. The upper partition wall 31 is disposed below the upper surface portion 14 with a predetermined interval. The upper partition wall 31 separates the first and second drain ports 21 and 22 and the intake port 23 from the duct 3. The rear end of the upper partition wall 31 is connected to the upper edge of the outlet 30 of the duct 3. A lower partition wall 32 that defines a part of the lower surface of the duct 3 is connected to the lower edge portion of the outlet 30 of the duct 3. The lower partition wall 32 extends forward from the outlet 30 of the duct 3 and is connected to the lower surface portion 15 of the cowl grill 1. Although not clearly shown in the drawings, a side partition wall that partitions a part of the side surface of the duct 3 is connected to the side edge of the outlet 30 of the duct 3. The side partition wall extends forward from the outlet 30 of the duct 3 and is connected to the side surface portion 16 and the like of the cowl grill 1.

  The front end portion of the duct 3 constitutes a hanging portion 34 that extends downward along the front surface of the battery 55 on the front side of the battery 55. At the front end of the upper partition wall 31, a vertical partition wall 35 extending downward is disposed on the rear side of the side surface portion 16 of the cowl grill 1 at a predetermined interval. Further, as shown in FIG. 5, the cowl grill 1 has a side surface portion 16 that extends downward along the vertical partition wall 35 on the rear side of the vertical partition wall 35, and the vertical partition wall 35, the side surface portion 16, and the like. As a result, the hanging part 34 of the duct 3 is defined. The inlet 36 of the duct 3 opens downward at the lower end of the hanging part 34.

  The inlet 36 of the duct 3 and the air inlet 23 are connected to each other by an upstream portion of the air passage. The upstream portion of the air passage includes an inflow portion 41, a second hanging portion 42 connected to the inflow portion 41, an opening 43 provided at the lower end of the second hanging portion 42, the opening 43 and the inlet 36 of the duct 3. And a horizontal portion 44 extending in the horizontal direction so as to be connected.

  The inflow portion 41 is configured to extend forward on the lower side of the intake port 23 in correspondence with the intake port 23 spreading forward. The inflow portion 41 is partitioned by the upper surface portion 14, the upper partition wall 31, and the side surface portion 16 of the cowl grill 1.

  The second hanging portion 42 is connected to the front end portion of the inflow portion 41 and extends downward therefrom. The second hanging part 42 is configured to be parallel to the hanging part 34 of the duct 3 with the vertical partition wall 35 interposed therebetween. The opening 43 and the inlet 36 of the duct 3 are aligned in the horizontal direction. The opening 43 opens downward. As shown in FIG. 6, the second hanging part 42 is partitioned by the side part 16 of the cowl grill 1 and the vertical partition wall 35. The second drooping portion 42 and the opening 43 are configured in an L shape so as to surround the drooping portion 34 and the inlet 36 of the duct 3 that are substantially trapezoidal when viewed from above.

  The horizontal portion 44 connects the opening 43 that opens downward and the inlet 36 of the duct 3 that also opens downward. The horizontal portion 44 extends in the front-rear direction and in the horizontal direction so as to go from the opening 43 to the inlet 36 of the duct 3. The horizontal portion 44 is partitioned by the lower surface portion 15 and the side surface portion 16 of the cowl grill 1.

  A connection point between the upstream portion of the air passage and the inlet 36 of the duct 3 has a labyrinth structure. The labyrinth structure is composed of a horizontal part that connects the hanging part 34 and the second hanging part 42 separated by the vertical partition wall 35, the inlet 36 and the opening 43 of the duct 3 that opens downward, and the inlet 36 and the opening 43 of the duct 3. Part 44. In this labyrinth structure, when the flow area of the inlet 36 of the duct 3 is compared with the flow area of the opening 43, the flow area of the inlet 36 of the duct 3 is larger than the opening area as shown in FIG. 43 is larger than the flow path area. Further, as shown by arrows in FIG. 5, when comparing the length L1 of the inlet 36 of the duct 3 in the front-rear direction and the length L2 of the opening 43 in the front-rear direction, the length L1 is greater than the length L2. Is also getting longer.

  As described above, the upper partition wall 31 partitions between the first and second drain ports 21 and 22 and the intake port 23 and the duct 3 and is an inflow portion that is a part of the upstream portion of the air passage. 41 is defined. Between the air inlet 23 and the second drainage port 22 on the lower surface of the upper surface part 14 of the cowl grill 1, a shutoff that separates the inflow portion 41 connected to the air inlet 23 from the first drainage port 21 and the second drainage port 22. A wall 17 is provided extending downward from the lower surface of the upper surface portion 14. As shown in FIG. 7, the blocking wall 17 extends in the vehicle width direction along the second drain port 22, and bends inward in the vehicle width direction so as to partition the inflow portion 41. It is configured to extend. The lower end of the blocking wall 17 is connected to the upper partition wall 31, and the blocking wall 17 connects the upper surface portion 14 and the upper partition wall 31 in the vertical direction.

  As shown in FIGS. 2 and 5, a drainage groove 58 is provided in the lower part of the cowl grill 1. The drainage groove 58 is connected to the first and second drainage ports 21 and 22 below the first drainage port 21 and the second drainage port 22. The water that has passed through the first drain port 21 and the second drain port 22 enters the drain groove 58 while bypassing the duct 3 as indicated by arrows in FIG.

  As shown in FIG. 4, the drainage groove 58 extends in the vehicle width direction. The bottom surface of the drainage groove 58 is configured to incline downward from the center side in the vehicle width direction toward the outside. The water that has entered the drainage groove 58 flows to the outside in the vehicle width direction along the bottom surface of the inclined drainage groove 58. Although not shown in the drawings, drain holes for discharging water are provided at both ends of the drainage groove 58 in the vehicle width direction.

  As described above, the vehicle cowl structure disclosed herein includes a cowl grill 1 configured to spread from the lower end edge of the windshield 61 toward the front of the vehicle, and between the engine room 71 and the vehicle compartment 72. A duct 3 configured to partition and form a part of an air passage connected to an outside air inlet 521 provided in the separated dash lower 52 with a partition wall.

  On the upper surface of the cowl grill 1, first and second drain ports 21 and 22 and an inlet port 23 positioned in front of the second drain port 22 are opened. In the engine room 71, the upper side of the battery 55 disposed below the cowl grill 1 is extended in the front-rear direction so as to connect the port 23 and the outside air introduction port 521 to each other.

  As described above, the battery 55 disposed below the cowl grill 1 in the engine room 71 is covered with the duct 3 on the upper side thereof. Since the upper surface of the battery 55 is covered twice by the upper surface 141 of the cowl grille 1 extending in the front-rear direction and the duct 3 extending in the front-rear direction, the upper surface of the battery 55 is prevented from being wetted.

  The cowl grill 1 has an upper surface portion 14 provided with the intake port 23, the first drain port 21 and the second drain port 22 penetrating in the thickness direction, and a space below the upper surface portion 14. The duct 3 has a closed cross-sectional structure surrounded by a lower surface portion 15 and a side surface portion 16 that connects the upper surface portion 14 and the lower surface portion 15, and a part of the duct 3 is the cowl grille. In the closed cross-section structure of 1, it is provided integrally with the cowl grill 1 by being partitioned by the lower surface portion 15 and the side surface portion 16.

  The cowl grill 1 is formed in a so-called hollow box shape, and a duct 3 that forms an air passage by a partition wall is integrated with the cowl grill 1. Since the box-type cowl grill 1 covers the upper surface of the battery 55, the upper surface of the battery 55 is prevented from getting wet.

  The battery 55 is disposed adjacent to the front side of the dash lower 52, and a front end portion of the duct 3 extending forward from the dash lower 52 extends along the front surface of the battery 55 on the front side of the battery 55. A downward hanging portion 34 extending downward is formed, and the inlet 36 of the duct 3 is provided at the lower end of the hanging portion 34.

  With this configuration, the rear side of the battery 55 is covered with the dash lower 52, the upper side is covered with the duct 3, and at least a part of the front side is covered with the hanging part 34. It is more reliably prevented that the upper surface of the battery 55 gets wet.

  As described above, the upper surface 141 of the cowl grill 1 is provided with the first drain port 21, the second drain port 22, and the intake port 23 in this order from the rear side to the front side. In the vehicle cowl structure, a rising portion 142 is provided on the upper surface 141 of the cowl grill 1 between the first drain port 21 and the second drain port 22 so as to incline upward toward the front. Yes.

  Most of the water flowing along the windshield 61 is discharged through the first drain port 21.

  The air flowing into the duct 3 through the air inlet 23 flows from the rear to the front on the upper surface 141 of the cowl grill 1 and reaches the air inlet 23. As the air flows, the water that moves from the rear to the front on the upper surface of the cowl grill 1 is first discharged through the first drain port 21. Since the second drain port 22 is provided in front of the first drain port 21, the water that has not been discharged from the first drain port 21 is also discharged through the second drain port 22. By providing a plurality of drain holes on the upper surface of the cowl grill 1, it is possible to prevent water from entering from the air inlet 23 together with air.

  Further, since the rising portion 142 is provided between the first drain port 21 and the second drain port 22, the flow of air from the rear toward the front along the upper surface 141 of the cowl grill 1 is increased. When the air flows upward along the rising portion 142, the water falls by its own weight. Thus, it is possible to separate the gas and liquid before reaching the air inlet 23, and water can be prevented from entering from the air inlet 23 together with air.

  The intake port 23 and the second drain port 22 are respectively disposed below the engine hood 63. Since both the intake port 23 and the second drain port 22 are covered with the engine hood 63, the water that has not been discharged from the first drain port 21 is discharged from the second drain port 22, together with the air. It is possible to effectively prevent water from entering.

  In addition, the second drainage port 22 is provided in a recessed portion 144 provided in the forward inclined portion 143.

  By providing the recessed portion 144 that is recessed from the upper surface 141 of the cowl grill 1, a part of the air flowing along the forward inclined portion 143 comes into contact with the side wall in the recessed portion 144, and water can be separated. By providing the second drainage port 22 in the recessed portion 144, the separated water can be reliably discharged. It is possible to more reliably separate the gas and liquid before reaching the intake port 23.

  Further, in the vehicle cowl structure disclosed herein, the air passage connected to the air intake port 23 is provided between the air intake port 23 and the second drainage port 22 on the lower surface of the upper surface portion 14 of the cowl grill 1. A blocking wall 17 that separates the inflow portion 41 from the first drainage port 21 and the second drainage port 22 extends downward from the lower surface of the upper surface portion 14.

  Even if the water discharged through the second drainage port 22 travels forward along the lower surface of the upper surface portion 14 of the cowl grill 1, the water separates the inflow portion 41 from the second drainage port 22. It hits the blocking wall 17. Since the water discharged through the second drain port 22 is reliably separated from the air passage, the water is prevented from entering the duct 3, and the outside air inlet port 521 provided in the dash lower 52 is provided. Ingress of water is also prevented.

  The duct 3 is disposed extending in the front-rear direction below the upper surface portion 14 of the cowl grill 1, and the upper partition wall 31 defining the upper surface of the duct 3 is the upper surface portion 14 of the cowl grill 1. The air inlet 23, the first drain port 21, the second drain port 22 and the duct 3 are spaced apart from each other, and the blocking wall 17 is formed of the cowl. It is provided so as to connect between the upper surface portion 14 of the grill 1 and the upper partition wall 31 of the duct 3.

  When the blocking wall 17 connects the upper partition wall 31 of the duct 3 and the upper surface portion 14 of the cowl grill 1, the inflow portion 41, the first drain port 21, and the second drain port 22 are completely separated. The water discharged through the first and second drain ports 21 and 22 is reliably prevented from entering the air passage.

  The drainage groove 58 extends in the vehicle width direction below the first drainage port 21 and the second drainage port 22 in the closed cross-sectional structure of the cowl grill 1. As a result, the water flowing into the drainage groove 58 through the first drainage port 21 or the second drainage port 22 is discharged in the vehicle width direction.

  The bottom surface of the drainage groove 58 is inclined downward toward the outside in the vehicle width direction.

  The water that has entered the drainage groove 58 is discharged to the outside in the vehicle width direction along the bottom surface of the inclined drainage groove 58.

  In addition, since the first drain port 21 and the second drain port 22 are separated from the duct 3 by the upper partition wall 31, the first drain port 21 or the second drain port 22 is connected to the cowl grill 1 in which the duct 3 is integrated. It is possible to reliably prevent the water that has passed through from entering the duct 3. Gas-liquid separation in the cowl grill 1 is reliably performed.

  The upper partition wall 31 that defines the upper surface of the duct 3 is also configured to separate the air inlet 23 and the duct 3. The air flowing in from the intake port 23 bypasses the upper partition wall 31 of the duct 3 and enters the duct 3. Even if water is contained in the air flowing in from the air inlet 23, the gas and liquid can be separated before entering the inlet 36 of the duct 3.

  The air inlet 23 extends forward from the rear end edge where the blocking wall 17 is provided so as to ensure a predetermined opening area.

  By doing so, it is possible to secure an opening area having a size necessary for satisfying the requirements regarding the air conditioning in the passenger compartment 72.

  The inflow portion 41 of the air passage connected to the intake port 23 and the duct 3 are connected at the front end portion of the intake port 23. More specifically, the inlet 36 of the duct 3 opens downward at the front end of the duct 3, that is, at the lower end of the hanging part 34. The upstream portion of the air passage connected to the intake port 23 and the duct 3 have a downward opening 43 and an inlet 36 connected to each other.

  More specifically, the upstream portion of the air passage is disposed adjacent to the inlet 36 of the duct 3 at a connection point with the inlet 36 of the duct 3, and has a downward opening 43, A horizontal portion 44 extending in the horizontal direction so as to connect the inlet 36 of the duct 3 and the opening 43 is provided.

  More specifically, at the front end of the upper partition wall 31 that defines the upper surface of the duct 3, a vertical partition wall 35 that separates the hanging part 34 and the second hanging part 42 of the duct 3 extends downward. The connection location between the inlet 36 of the duct 3 and the upstream portion of the air passage has a labyrinth structure including the hanging part 34, the second hanging part 42, and a horizontal part 44.

  The air flowing in from the air inlet 23 flows forward through the inflow portion 41 of the air passage and then enters the duct 3 from the inlet 36 of the duct 3. At the connection point between the upstream portion of the air passage and the inlet 36 of the duct 3, the air flows out from the downward opening 43, reaches the inlet 36 of the duct 3 through the horizontal portion 44, and then upwards from there. 3 flows in. When air flows in from the inlet 36 of the downward duct 3, the water falls by its own weight, and the water is prevented from flowing into the duct 3.

  Further, since the vertical partition wall 35 extends in the vertical direction, air flows downward along the second hanging part 42 along the vertical partition wall 35 and collides with the horizontal part 44, whereby the gas and liquid are separated and the duct is separated. While the air flows upward from the inlet 3 along the vertical partition wall 35 from the inlet 3, water surely falls and gas-liquid separation is performed. By adopting the labyrinth structure, it is possible to more reliably prevent water from entering the duct 3, and to supply air that does not contain water to the outside air introduction port 521.

  The flow area of the inlet 36 of the duct 3 is larger than the flow area of the opening 43. Thereby, the flow velocity of the air flowing upward from the inlet 36 of the duct 3 decreases. The kinetic energy of the water droplets that try to flow into the duct 3 together with the air decreases, and the water droplets fall. In this way, more reliable gas-liquid separation is realized at the inlet 36 of the duct 3, and it is possible to supply air that does not contain water to the outside air inlet 521.

  After entering the duct 3, the air flows backward toward the outside air inlet 521 provided in the dash lower 52. By integrating the cowl grill 1 and the duct 3 to form an air passage extending in the front-rear direction, water easily adheres to the partition walls of the duct 3 while passing through the duct 3.

  Thus, gas-liquid separation is performed before air is introduced to the outside air introduction port 521, and it is possible to supply air that does not contain water to the outside air introduction port.

  An engine 54 is arranged vertically in the engine room 71, and a battery 55 is disposed between the dash lower 52 and the suspension housing 56 on one side in the vehicle width direction across the engine 54. The cowl grill 1 extends from the lower end edge of the windshield 61 to the suspension housing 56 so as to cover the upper side of the battery 55 on one side of the engine 54, and the duct 3. Is arranged extending in the front-rear direction on the upper side of the battery 55.

  In the cowl structure described above, the battery 55 is disposed between the dash lower 52 and the suspension housing 56 on one side in the vehicle width direction across the engine 54 in the engine room 71 in which the engine 54 is disposed vertically. In the provided configuration, the upper surface of the battery 55 is covered with the cowl grill 1 to prevent the upper surface of the battery 55 from getting wet.

  Further, as described above, since the air-liquid separation of the air introduced into the outside air inlet 521 can be performed on the upper surface 141 of the cowl grill 1 and the inside thereof, the outside air inlet 521 is disclosed in the vehicle cowl structure disclosed herein. Supplying air containing no water to the battery and preventing water from being applied to the upper surface of the battery 55 are compatible.

  In the cowl structure, the cowl grill 1 and the duct 3 are integrated. However, the cowl grill 1 and the duct 3 may be configured separately.

  In the cowl structure described above, the cowl grill 1 is provided with the first and second drain ports 21 and 22, but the number of drain ports may be one.

1 cowl grill 14 upper surface portion 141 upper surface 142 rising portion 143 forward inclined portion 144 recessed portion 15 lower surface portion 16 side surface portion 17 blocking wall 21 first drainage port 22 second drainage port 23 intake port 3 duct 31 upper partition wall 34 hanging part 35 vertical Bulkhead 36 Inlet 42 Second hanging part 43 Opening 44 Horizontal part 52 Dash lower 521 Outside air inlet 55 Battery 56 Suspension housing 58 Drain groove 61 Windshield 63 Engine hood 71 Engine room 72 Car compartment

Claims (9)

A cowl grille configured to spread from the lower edge of the windshield toward the front of the vehicle;
A duct configured to form a part of an air passage connected to an outside air inlet provided in a dash lower separating the engine room and the vehicle compartment,
On the upper surface part constituting the upper surface of the cowl grille, a drain port and an intake port located in front of the drain port are provided so as to penetrate in the thickness direction,
Between the air inlet and the drain outlet on the lower surface of the upper surface portion of the cowl grill, a blocking wall that separates the air passage connected to the air inlet and the water outlet from the lower surface of the upper surface portion. A cowl structure for a vehicle that extends downward. The vehicle cowl structure according to claim 1,
The duct is disposed below the upper surface portion of the cowl grill so as to extend in the front-rear direction.
The upper partition wall that defines the upper surface of the duct is configured to be spaced below the upper surface portion of the cowl grille and is configured to partition a part of the air passage.
The blocking wall is a cowl structure of a vehicle provided so as to connect between the upper surface portion of the cowl grille and the upper partition wall of the duct. In the cowl structure of the vehicle according to claim 2,
The cowl grill has a closed cross-sectional structure surrounded by the upper surface portion, a lower surface portion disposed at a lower side of the upper surface portion, and a side surface portion connecting the upper surface portion and the lower surface portion. And
A part of the duct is a cowl structure of a vehicle that is provided integrally with the cowl grille by being parted by the lower surface part and the side part in the closed cross-sectional structure of the cowl grille. In the cowl structure of the vehicle according to claim 3,
The cowl grille has a drainage groove extending in a vehicle width direction below the drainage opening in the closed cross-sectional structure. In the cowl structure of the vehicle according to claim 4,
A vehicle cowl structure in which the bottom surface of the drainage groove is inclined downward toward the outside in the vehicle width direction. In the cowl structure of the vehicle according to any one of claims 2 to 5,
The drainage port includes a first drainage port and a second drainage port located in front of the first drainage port and rearward of the intake port,
A vehicular cowl structure in which a rising portion that is inclined upward toward the front is provided between the first drainage port and the second drainage port on an upper surface of the upper surface portion of the cowl grill. In the cowl structure of the vehicle according to any one of claims 2 to 6,
The intake port extends forward from the rear edge provided with the blocking wall so as to secure a predetermined opening area,
An upstream portion of the air passage connected to the air inlet and the duct are connected to each other at a front end portion of the air inlet. The cowl structure for a vehicle according to claim 7,
An upstream portion of the air passage connected to the intake port and the duct have a cowl structure for a vehicle in which opening portions that open downward are connected to each other. In the cowl structure of the vehicle according to any one of claims 1 to 8,
In the engine room, the engine is arranged vertically,
On one side in the vehicle width direction across the engine, a battery is disposed between the dash lower and the suspension housing,
The cowl grille extends from the lower end edge of the windshield to the suspension housing so as to cover the upper side of the battery on one side of the engine.
The duct is a cowl structure for a vehicle in which the upper side of the battery is disposed extending in the front-rear direction.

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