Intake duct and vehicle

Abstract

To provide an intake duct capable of preventing reduction in output of an engine, by restraining water entering the intake duct from advancing to the supply passage side to the engine.SOLUTION: An intake duct 10 includes a housing 11 having a shape extending in a vertical direction, an intake port 16 for taking in air being formed in an upper portion of the housing 11, a delivery port 17 for delivering the air to the outside, and a drain hole 18 for discharging water that has entered the housing 11 to the outside being formed in a lower portion of the housing 11, and a guide plate 25 that is disposed near the intake port 16 inside the housing 11, allows the air to flow toward the delivery port 17, and guides the water that has entered the housing 11 toward the drain hole 18.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an intake duct and a vehicle. [Background technology]

[0002] For example, Patent Document 1 discloses a vertical type air intake duct that is attached to a cab-over type vehicle. Air taken in through this type of intake duct is supplied to the engine via an air cleaner. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-168373 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, this type of intake duct has had the problem that water such as rainwater can get into the duct and enter the air cleaner side, causing a decrease in engine output.

[0005] Therefore, the present invention has been made in consideration of the above points, and aims to provide an intake duct and a vehicle that can prevent water that has entered the intake duct from entering the supply passage to the engine, thereby preventing a decrease in engine output. [Means for solving the problem]

[0006] An intake duct of one form of the present invention is a housing having a shape that extends vertically, with an air intake port formed at the top for taking in air, an air outlet port for sending the air to the outside, and a drain hole formed at the bottom for discharging water that has entered the housing to the outside, and an induction plate that is positioned near the air intake port inside the housing and allows the air to flow toward the air outlet port and induces water that has entered the housing toward the drain hole.

[0007] The housing may have a water guide rib formed inside the housing that guides water in a predetermined direction, and a portion of the guide plate may be in contact with the water guide rib so that water that moves along the guide plate flows along the water guide rib.

[0008] The guide plate may include a plate main body portion arranged to face the air intake port, and a first side edge portion bent from the plate main body portion and fixed to the water guide rib.

[0009] The induction plate may be a mesh plate having a plurality of openings.

[0010] The mesh plate may have a mesh structure including a plurality of first linear members inclined at a predetermined angle with respect to the vertical direction, and a plurality of second linear members arranged so as to intersect with the plurality of first linear members.

[0011] The induction plate may further include a second side edge portion that is bent from the plate main body portion and fixed to the housing, and the second side edge portion may be fixed to the housing by a fastener together with a portion of a louver member that covers the air intake port.

[0012] A vehicle according to one aspect of the present invention includes a cab in which a driver sits, and the intake duct described above, which is arranged behind the cab. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide an intake duct and a vehicle that can prevent water that has entered the intake duct from entering the supply passage to the engine, thereby preventing a decrease in engine output. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. 2 is a vertical cross-sectional view of the intake duct. [Figure 4] FIG. 10 is a vertical cross-sectional view of an intake duct without an induction plate. [Figure 5] FIG. 2 is a perspective view showing a water guide rib and a guide plate. [Figure 6] 10A and 10B are diagrams illustrating an example of the configuration of a water guide rib and a guide plate. [Figure 7] FIG. [Figure 8] FIG. 10 is a diagram illustrating the material of the induction plate. DETAILED DESCRIPTION OF THE INVENTION

[0015] FIG. 1 is a side view of a vehicle. FIG. 2 is a perspective view of an intake duct. FIG. 2(a) shows a state in which a louver member is attached, and FIG. 2(b) shows a state in which the louver member is removed. FIG. 3 is a longitudinal cross-sectional view of the intake duct. FIG. 4 is a longitudinal cross-sectional view of an intake duct without an induction plate. In this specification, the up-down direction in the drawings corresponds to the vertical direction. "Front" and "rear" correspond to the front and rear of the vehicle, and "left" and "right" correspond to the right and left of the vehicle.

[0016] As shown in Fig. 1, a vehicle S100 of this embodiment includes a cab 1 and an intake duct 10. The cab 1 is a portion in which a driver sits, and a driver's seat is arranged.

[0017] The intake duct 10 is a component for taking in air to be supplied to the engine. The intake duct 10 is disposed behind the cab 1. The intake duct 10 extends vertically when attached to the cab 1. As shown in FIG. 2 , the intake duct 10 has a housing 11, a louver member 20, an induction plate 25, and a connecting member 31.

[0018] (Housing) The housing 11 has a shape that extends in the vertical direction when the intake duct 10 is attached to the vehicle S100. The housing 11 is, for example, a hollow part made of resin. As shown in FIG. 2(a), the housing 11 has a front wall 11a, a rear wall 11b, an outer wall 11c, and an inner wall 11d. The front wall 11a is a part located in the front of the vehicle S100, and the rear wall 11b is a part located in the rear. The outer wall 11c is a part located on the outer side in the vehicle width direction, and the inner wall 11d is a part located on the inner side in the vehicle width direction.

[0019] As shown in FIGS. 2 and 3, the housing 11 has an air intake 16, an air outlet 17, and a drain hole 18.

[0020] Air intake port 16 is an opening for taking air into the interior of housing 11. Air intake port 16 is formed in the upper part of housing 11. Air intake port 16 is provided at a position facing outward in the width direction of vehicle S100 (toward the right in one example).

[0021] The louver member 20 is a component that covers the air intake port 16. As shown in Fig. 2(a), the louver member 20 is fixed to the housing 11 by, for example, screws S, which are fasteners. Note that in Fig. 2(a), only some of the multiple screws S are labeled with reference numerals.

[0022] As shown in Fig. 3, the outlet 17 is provided at the bottom of the housing 11. The outlet 17 is a portion for sending air out, and more specifically, it is a supply path for air to the engine. A bellows-shaped connecting member 31 is provided near the outlet 17. The air sent out from the outlet 17 is supplied to the engine via an air cleaner arranged below the housing 11.

[0023] Drainage hole 18 is a portion for draining water that has entered housing 11 to the outside. Drainage hole 18 is provided in the lower part of housing 11. As shown in FIG. 3, in this example, drainage hole 18 is located outward in the vehicle width direction from outlet 17.

[0024] As shown in Fig. 3, a protrusion 11p is formed between the outlet 17 and the drain hole 18. The protrusion 11p is a portion that protrudes upward from a part of the interior of the housing 11. Water that falls at a position closer to the outlet 17 than the top of the protrusion 11p flows toward the outlet 17. Water that falls at a position closer to the drain hole 18 than the top of the protrusion 11p flows toward the drain hole 18.

[0025] A plurality of water guide ribs 13 are formed inside the housing 11. The water guide ribs 13 are portions for guiding water that has entered the housing 11. In this example, the water guide ribs 13 are formed on the inner surface of the front wall 11a. Specifically, the water guide ribs 13 are inclined so that the end 13a side is lower than the opposite end. In this embodiment, the plurality of water guide ribs 13 are, for example, parallel to one another. The end 13a is located outward in the vehicle width direction from the top of the protrusion 11p. Due to this shape, the water guide ribs 13 guide water toward the drainage holes 18. Note that in this embodiment, the water guide ribs 13 guide water outward in the vehicle width direction, but the water guide ribs 13 may guide water in a predetermined direction other than this direction.

[0026] Fig. 5 is a perspective view showing the water guide rib and guide plate. Fig. 6 is a view showing an example of the configuration of the water guide rib and guide plate. As shown in Figs. 5 and 6, the water guide rib 13 is a rib that protrudes from the inner surface of the front wall 11a.

[0027] (Induction plate) 3 and 5, the guide plate 25 is a component disposed near the air intake 16 inside the housing 11. The guide plate 25 has the function of guiding water that has entered the housing 11 toward the drain hole 18.

[0028] Fig. 7 is a perspective view of the induction plate. Fig. 8 is a diagram illustrating the material of the induction plate. As shown in Fig. 7, the induction plate 25 has a plate main body 25a, a first side edge 25b, and a second side edge 25c. As an example, the induction plate 25 is a plate-like member in which the plate main body 25a, the first side edge 25b, and the second side edge 25c are integrally formed. The induction plate 25 is made of, for example, metal, and is bent by a predetermined process (for example, press working).

[0029] The plate main body 25a has a width approximately equal to the length of the internal space of the housing 11 (length in the vehicle longitudinal direction). The first side edge 25b is a portion bent from one end of the plate main body 25a. The second side edge 25c is a portion bent from the other end of the plate main body 25a. Although not shown in FIG. 7, the first side edge 25b and the second side edge 25c are formed with holes through which fasteners are passed to fix the guide plate 25 to the housing 11. Because the guide plate 25 is a mesh plate as described below, it is not necessary for holes to be formed as long as fasteners can be passed through them without forming holes.

[0030] The guide plate 25 is not limited to a specific material (shape of material) as long as it allows air to pass through. One example of the guide plate 25 is a mesh plate. Specifically, the guide plate 25 is a mesh plate with a mesh shape having a plurality of openings as shown in FIG. 8.

[0031] More specifically, as shown in FIG. 8, the induction plate 25 is a mesh-structured member provided with a plurality of first linear members 26a and a plurality of second linear members 26b. The plurality of first linear members 26a are inclined at a predetermined angle with respect to the vertical direction. The plurality of second linear members 26b are arranged so as to intersect with the plurality of first linear members 26a. In this example, the plurality of first linear members 26a and the plurality of second linear members 26b are arranged so as to form a vertically elongated diamond-shaped opening. The size of the opening is arbitrary, but may be, for example, a minor axis d1 of 1 mm or more and a major axis d2 of 1.5 m or more.

[0032] In this embodiment, the guide plate 25 is fixed to the housing 11 in an orientation such that the opening is a vertically long diamond, but the guide plate 25 may be rotated 90 degrees and fixed to the housing 11 in an orientation such that the opening is a horizontally long diamond. With this configuration, water can be easily moved horizontally, and the water can be effectively guided to the water guide rib 13 side.

[0033] 3 and 5, the guide plate 25 is disposed so that the plate main body 25a faces the air intake port 16. When the guide plate 25 is attached to the housing 11, the plate main body 25a is inclined with respect to the vertical direction. Specifically, as can be seen from FIG. 3, the guide plate 25 is disposed so that the lower end of the plate main body 25a is positioned more outward in the vehicle width direction than the upper end of the plate main body 25a (more specifically, the lower end of the plate main body 25a is positioned more outward than the apex of the protrusion 11p).

[0034] 5, the first side edge 25b is in contact with the water guide rib 13. Specifically, the first side edge 25b is arranged so as to be in contact with a plurality of water guide ribs 13. The first side edge 25b is fixed to the water guide rib 13 by a fastener such as a rivet T. The fastener may be a screw, a bolt, a clip, or the like.

[0035] The second side edge 25c is fixed to a portion of the housing 11 by a fastener such as a screw S. In this embodiment, the second side edge 25c is fixed to the housing 11 together with a portion of the louver member 20 by the fastener. That is, in the configuration of this embodiment, the second side edge 25c is fastened together with the fastener for fastening the louver member 20 and fixed to the housing 11. With this configuration, there is no need to provide a fastener for fastening the guide plate 25 separately from the fastener for fastening the louver member 20, which results in a simplified configuration and easier assembly work. Note that the fastener may be a bolt, a clip, or the like, other than a screw.

[0036] (Function of the Intake Duct of the Present Embodiment) Drainage of water when water enters the intake duct 10 configured as described above will be described with reference to FIGS.

[0037] First, if no guide plate 25 is provided in the intake duct as shown in Figure 4, water that enters the housing 11 from the intake port 16 may fall toward the outlet port 17 as shown by arrow A1. If the water that has entered the outlet port 17 enters the air cleaner below the intake duct 10, a problem of reduced engine output may occur.

[0038] In contrast, in the configuration of this embodiment (FIG. 3), water that enters housing 11 through air intake 16 flows as shown by arrow A2. Specifically, the water first adheres to guide plate 25 (although it is not necessary for all the water to adhere to guide plate 25). Some of the water that adheres to guide plate 25 then moves downward along guide plate 25 and falls from the lower end of plate main body 25a toward drainage hole 18. Another portion of the water that adheres to guide plate 25 moves along guide plate 25, moves from first side edge 25b (FIG. 5) toward water guide rib 13, flows along water guide rib 13, and falls toward drainage hole 18.

[0039] Water that falls from the lower end of the plate main body 25a toward the drain hole 18 and water that flows down from the water guide rib 13 toward the drain hole 18 is discharged to the outside through the drain hole 18.

[0040] (Effect of Intake Duct 10) As described above, in the configuration of this embodiment, the provision of the guide plate 25 in the intake duct 10 makes it difficult for water to enter the side of the outlet 17, thereby preventing the occurrence of the problem of a decrease in engine output. The guide plate 25 is a mesh plate that allows air to flow toward the side of the outlet 17, and therefore does not interfere with the supply of air to the engine.

[0041] Furthermore, since the water guide rib 13 is formed on the housing 11 and a part of the guide plate 25 is in contact with the water guide rib 13, water from the guide plate 25 flows along the water guide rib 13, and the water can be effectively guided toward the drain hole 18.

[0042] Furthermore, the configuration having the plate main body portion 25a and the first side edge portion 25b bent from there and fixed to the water guide rib 13 allows the guide plate 25 to be installed well on the intake duct 10 in which the intake port 16 faces the side of the vehicle and the water guide rib 13 is formed on the inner surface of the front wall 11a.

[0043] Furthermore, according to the configuration in which a portion of the guide plate 25 is fixed (fastened together) with a portion of the louver member 20, the configuration is simplified and the assembly work is also facilitated.

[0044] (Variation) 3 shows, as an example, a configuration in which the lower end of plate body 25a of guide plate 25 does not come into contact with the inner wall of housing 11, but a configuration in which a part of guide plate 25 extends to the inner wall of housing 11 and comes into contact with the inner wall may also be employed. In this case, water from guide plate 25 flows down along the inner wall, so that water flows smoothly toward drain hole 18 even while the vehicle is moving.

[0045] The present invention has been described above using embodiments, but the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. For example, all or part of the device can be configured by functionally or physically distributing or integrating any unit. Furthermore, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effects of the new embodiments resulting from the combination also have the effects of the original embodiments. [Explanation of symbols]

[0046] 1 cab 10 intake duct 11. Housing 11a Front wall 11b Back wall 11c outer wall 11d Inner wall 11p convex part 13 Water guide rib 13a End 16 Air intake 17 Outlet 18 Drainage hole 20 Louver member 25 Induction Plate 25a Plate body 25b 1st side edge 25c 2nd side edge 26a First linear member 26b Second linear member 31 Connecting member S screw S100 vehicle T Rivet

Claims

1. a housing having a shape extending in a vertical direction, the housing having an air intake port formed at an upper part for taking in air, an outlet port for sending the air to the outside, and a drain hole for discharging water that has entered the housing to the outside formed at a lower part; an induction plate disposed near the air intake port inside the housing, allowing the air to flow toward the air outlet side and guiding water that has entered the housing toward the drain hole side; An intake duct comprising:

2. The housing includes: a water guide rib formed inside the housing for guiding water in a predetermined direction; A portion of the guide plate is in contact with the water guide rib so that water moving along the guide plate flows along the water guide rib. The intake duct according to claim 1 .

3. The induction plate is a plate main body portion disposed to face the intake port; a first side edge portion bent from the plate body portion and fixed to the water guide rib; Including, The intake duct according to claim 2 .

4. The induction plate is a mesh plate having a plurality of openings. The intake duct according to claim 1 .

5. The mesh plate is a plurality of first linear members inclined at a predetermined angle with respect to the vertical direction; a plurality of second linear members arranged to intersect with the plurality of first linear members; having a mesh structure including The intake duct according to claim 4.

6. The induction plate is a second side edge portion bent from the plate body and fixed to the housing; The second side edge portion is fixed to the housing by a fastener together with a part of a louver member covering the air intake port. The intake duct according to claim 3 .

7. A cab for the driver, The intake duct according to claim 1 or 2, which is disposed behind the cab; A vehicle equipped with:

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