Air intake grille and air intake duct

Abstract

To provide an air intake grille and an air intake duct that can reduce pressure loss and wind noise while preventing foreign matter from entering.SOLUTION: An air intake grille 30 which sucks air in a cabin comprises a frame body 31 connected to an air intake of an air intake duct 20, a plurality of horizontal louvers 33 arranged inside the frame body 31 and extending horizontally, and a plurality of vertical louvers 35 arranged inside the frame body 31 and extending vertically. An interval D1 between adjacent horizontal louvers 33 is narrower than an interval D2 between adjacent vertical louvers 35, which are arranged downstream from the horizontal louvers 33 in an air suction direction.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an air intake grille that draws in air into a vehicle cabin, and an air intake duct provided with the air intake grille. [Background technology]

[0002] In recent years, research and development has been conducted into secondary cells (also called batteries) that contribute to energy efficiency in order to ensure that more people have access to affordable, reliable, sustainable and advanced energy.

[0003] As the drive source of a vehicle is electrified, the vehicle is equipped with a battery pack that houses a battery that supplies power to a motor, etc. The battery pack is equipped with a cooling structure for cooling the battery, and for example, an air-cooled cooling structure is widely adopted in which cooling air is drawn in from the vehicle cabin by a fan and then blown to the battery to cool the battery.

[0004] In an air-cooled cooling structure, a structure is provided to prevent foreign objects from entering the intake duct when air is drawn into the vehicle cabin. For example, in Patent Document 1, an intake grille having a plurality of first grill forming portions and second grill forming portions arranged in a lattice pattern is attached to the intake duct to prevent the intrusion of foreign objects. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2019 / 008871 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the air intake grille of Patent Document 1, the air intake inlet is narrowed by the multiple first and second grille forming parts arranged in a lattice pattern. With such a configuration, the pressure loss and wind noise in the air intake grille increase, which may reduce the cooling efficiency of the battery and cause discomfort to passengers. On the other hand, if no air intake grille is provided, foreign objects may easily enter the air intake duct.

[0007] The present invention provides an air intake grille and an air intake duct that can reduce pressure loss and wind noise while preventing the intrusion of foreign matter. [Means for solving the problem]

[0008] The present invention relates to An intake grille that draws in air into a vehicle cabin, A frame body connected to an intake port of the intake duct; A plurality of horizontal louvers disposed inside the frame and extending in a horizontal direction; A plurality of vertical louvers are disposed inside the frame and extend in a vertical direction, The spacing between adjacent horizontal louvers is narrower than the spacing between adjacent vertical louvers. The vertical louvers are disposed downstream of the horizontal louvers in the intake direction. 、 In the intake direction, the horizontal louvers and the vertical louvers do not overlap each other, and the upstream end of each vertical louver is disposed at the same position as the downstream end of each horizontal louver or downstream of the downstream end of each horizontal louver. .

[0009] The present invention also provides a method for producing a method for manufacturing a semiconductor device comprising the steps of: An intake duct provided with the intake grill, A fixing portion for attachment to the vehicle body is provided near the intake grill. Effect of the Invention

[0010] According to the present invention, it is possible to reduce pressure loss and wind noise while preventing the intrusion of foreign matter. [Brief description of the drawings]

[0011] [Figure 1]2 is a perspective view showing a battery pack 10 provided below a rear seat 2 and an intake duct 20 connected to the battery pack 10. FIG. [Diagram 2] FIG. 2 is a side view of the intake duct 20 provided with an intake grill 30. [Diagram 3] FIG. 2 is a front view of the air intake grill 30. [Figure 4] FIG. 4 is a cross-sectional view of line AA in FIG. 3, seen from the left front. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the air intake grille and air intake duct of the present invention will be described with reference to the attached drawings. The drawings are to be viewed in the direction of the reference symbols. In this specification and the like, for the sake of simplicity and clarity, the front / rear, left / right, and up / down directions are described according to the direction as seen by the driver of the vehicle, and in the drawings, the front of the vehicle is indicated as Fr, the rear as Rr, the left as L, the right as R, the top as U, and the bottom as D.

[0013] 1, an air intake duct 20 according to an embodiment of the present invention is connected to a battery pack 10 disposed, for example, below a rear seat 2 and a luggage compartment 4 of a vehicle 1. An air intake grille 30 according to an embodiment of the present invention is connected to an air intake port of the air intake duct 20.

[0014] The intake duct 20 has a substantially L-shape in top view, and includes a downstream duct section 20A connected to the battery pack 10 and extending in the front-rear direction, and an upstream duct section 20B connected to the downstream duct section 20A and extending in the left-right direction. An intake port opening to the right is provided in the upstream duct section 20B of the intake duct 20. The intake duct 20 does not have to have a substantially L-shape in top view, and may have a shape extending linearly in the front-rear direction, for example.

[0015] A recess is provided below the rear seat 2 and the luggage compartment 4, and the battery pack 10 is disposed in the recess with vehicle body fixing parts (not shown) provided at both left and right ends fixed to side frames 5 of the vehicle 1. Various parts are provided inside the battery pack 10, such as a battery that stores power to be supplied to a motor or the like that serves as a drive source for the vehicle 1, and an intake fan that draws cooling air from the passenger compartment to cool the battery. The vehicle 1 is, for example, an electric vehicle such as a hybrid vehicle, a battery-powered electric vehicle, or a fuel cell vehicle.

[0016] As shown in FIG. 2, the intake duct 20 has a duct body 21, a fixing portion 23, and an intake grill 30.

[0017] Duct body 21 defines a flow path therein through which cooling air drawn from the vehicle interior flows. The cooling air introduced into duct body 21 passes from upstream duct portion 20B through downstream duct portion 20A and is introduced into battery pack 10.

[0018] The fixing parts 23 are provided on the duct body 21 and fix the intake duct 20 to the floor panel 7 of the vehicle 1. The fixing parts 23 are provided on the left and right sides of the duct body 21 and have bolt holes through which fastening members such as bolts can be inserted. The fixing parts 23 are provided adjacent to the intake grille 30 and improve the rigidity of the intake grille 30.

[0019] As shown in FIG. 3, the air intake grille 30 includes a frame 31, a plurality of horizontal louvers 33, and a plurality of vertical louvers .

[0020] The frame 31 is connected to the intake port of the intake duct 20. The frame 31 has a rectangular cylindrical shape, and the length in the left-right direction is longer than the length in the vertical direction when viewed from the front. In this embodiment, the frame 31 is provided integrally with the duct main body 21, but it may be provided separately from the duct main body 21.

[0021] The horizontal louvers 33 are disposed inside the frame body 31 and extend in the horizontal direction. In this embodiment, as an example, three horizontal louvers 33 are disposed inside the frame body 31. Each horizontal louver 33 has a plate shape and is disposed inside the frame body 31 at equal intervals (interval D1).

[0022] The multiple vertical louvers 35 are disposed inside the frame body 31 and extend in the vertical direction. In this embodiment, as an example, eight vertical louvers are disposed inside the frame body 31. Each vertical louver 35 has a plate shape and is disposed inside the frame body 31 at equal intervals (interval D2).

[0023] As shown in Fig. 4, the vertical louvers 35 are disposed downstream of the horizontal louvers 33 in the air intake direction (the direction from the front to the rear in Fig. 4). The upstream end 33a of the horizontal louvers 33 is located at the air intake inlet 30a of the air intake grille 30, and the horizontal louvers 33 extend from the air intake inlet 30a along the air intake direction. The vertical louvers 35 are disposed at the same position as the downstream end 33b of the horizontal louvers 33 or downstream of the downstream end 33b. In this embodiment, each vertical louver 35 is disposed such that the upstream end 35a is at the same position as the downstream end 33b of each horizontal louver 33 in the air intake direction.

[0024] In this way, since the vertical louvers 35 are disposed downstream of the horizontal louvers 33, the flow passage cross-sectional area of ​​the intake inlet 30a of the intake grille 30 is larger than when the vertical louvers 35 and the horizontal louvers 33 are disposed at positions where they overlap in the intake direction (i.e., when the vertical louvers 35 and the horizontal louvers 33 are disposed perpendicular to each other at the intake inlet 30a). This reduces pressure loss when the cooling air in the vehicle compartment flows from the intake inlet 30a to the intake grille 30, and improves the cooling efficiency of the battery provided in the battery pack 10. In addition, wind noise generated when the cooling air flows from the intake inlet 30a to the intake grille 30 can also be reduced.

[0025] On the other hand, if the flow passage cross-sectional area of ​​the intake inlet 30a is increased, foreign matter can easily enter through the intake inlet 30a, but in this embodiment, the interval D1 between adjacent horizontal louvers 33 is configured to be narrower than the interval D2 between adjacent vertical louvers 35. Since the horizontal louvers 33 with a narrower interval are disposed on the upstream side, it is possible to prevent foreign matter from entering the intake grille 30. Therefore, according to the intake grille 30 of this embodiment, it is possible to increase the flow passage cross-sectional area of ​​the intake inlet 30a and also suppress the intrusion of foreign matter.

[0026] Moreover, each vertical louver 35 is disposed such that its upstream end 35a is at the same position as the downstream end 33b of each horizontal louver 33 in the intake direction, and the downstream end 33b of each horizontal louver 33 abuts the upstream end 35a of each vertical louver 35. With this configuration, it is possible to improve the rigidity in the vicinity of the intake inlet 30a, particularly the rigidity against vertical loads, compared to a case in which the downstream end 33b of each horizontal louver 33 and the upstream end 35a of each vertical louver 35 are disposed apart from each other.

[0027] Moreover, each horizontal louver 33 is provided at an incline with respect to the horizontal plane. More specifically, each horizontal louver 33 is inclined so that the upstream end 33a is positioned lower than the downstream end 33b. With this configuration, even if liquid such as rainwater gets on the horizontal louver 33, the liquid is discharged from the upper surface of the horizontal louver 33 to the outside of the intake inlet 30a, and the liquid can be prevented from entering the intake duct 20.

[0028] Although one embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such an embodiment. It is clear that a person skilled in the art can come up with various modified or revised examples within the scope of the claims, and it is understood that these also naturally belong to the technical scope of the present invention. In addition, the components in the above embodiment may be arbitrarily combined within the scope of the invention.

[0029] This specification describes at least the following items. In parentheses, components corresponding to the above-described embodiments are shown as examples, but the present invention is not limited to these.

[0030] (1) An intake grille (intake grille 30) that draws in air into the vehicle cabin, A frame body (frame body 31) connected to an intake port of an intake duct (intake duct 20); A plurality of horizontal louvers (horizontal louvers 33) arranged inside the frame and extending horizontally; A plurality of vertical louvers (vertical louvers 35) are disposed inside the frame and extend vertically, The distance between adjacent horizontal louvers (distance D1) is narrower than the distance between adjacent vertical louvers (distance D2). The vertical louvers are disposed downstream of the horizontal louvers in the air intake direction. Intake grill.

[0031] According to (1), the vertical louvers are arranged downstream of the horizontal louvers, so the cross-sectional area of ​​the intake grille's intake inlet is increased. This reduces pressure loss and wind noise. Furthermore, the narrow horizontal louvers are arranged upstream, so foreign objects can be prevented from entering the intake duct.

[0032] (2) An air intake grille as described in (1), In the intake direction, the downstream end (downstream end 33b) of each horizontal louver abuts the upstream end (upstream end 35a) of each vertical louver. Intake grill.

[0033] According to (2), the rigidity of the intake grille in the vicinity of the intake inlet can be improved.

[0034] (3) An air intake grill according to (1) or (2), Each horizontal louver is inclined relative to the horizontal plane. Intake grill.

[0035] According to (3), even if liquid gets on the horizontal louvers, the liquid can be prevented from entering the intake duct.

[0036] (4) An intake duct provided with an intake grill according to any one of (1) to (3), A fixing portion (fixing portion 23) is provided adjacent to the intake grille and is fixed to the vehicle body. Intake duct.

[0037] According to (4), the rigidity of the intake grille can be improved by the fixing portion. [Explanation of symbols]

[0038] 20 Intake duct 23 Fixed part 30 Intake grill 31 Frame 33 Horizontal Louvers 33b Downstream end 35 Vertical Louvers 35a Upstream end

Claims

1. An intake grille that draws in air into a vehicle cabin, A frame body connected to an intake port of the intake duct; A plurality of horizontal louvers disposed inside the frame and extending in a horizontal direction; A plurality of vertical louvers are disposed inside the frame and extend in a vertical direction, The spacing between adjacent horizontal louvers is narrower than the spacing between adjacent vertical louvers. The vertical louver is disposed downstream of the horizontal louver in the intake direction, In the intake direction, the horizontal louvers and the vertical louvers do not overlap each other, and the upstream end of each vertical louver is disposed at the same position as the downstream end of each horizontal louver or downstream of the downstream end of each horizontal louver. Intake grill.

2. 2. The air intake grille of claim 1, In the intake direction, the downstream end of each horizontal louver abuts the upstream end of each vertical louver. Intake grill.

3. 3. The air intake grille according to claim 1 or 2, Each horizontal louver is inclined relative to the horizontal plane. Intake grill.

4. An intake duct provided with the intake grille according to claim 1 or 2, A fixing portion is provided adjacent to the intake grille and is fixed to a vehicle body. Intake duct.

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