WO2021054383A1

WO2021054383A1 - Air guide structure of vehicle cooling device

Info

Publication number: WO2021054383A1
Application number: PCT/JP2020/035182
Authority: WO
Inventors: 雄大高橋; 司紙屋
Original assignee: いすゞ自動車株式会社
Priority date: 2019-09-18
Filing date: 2020-09-17
Publication date: 2021-03-25
Also published as: DE112020004397T5; JP7212864B2; CN114423635A; JP2021046087A; CN114423635B

Abstract

An air guide body 31 has a sheet-like shape which has, on both sides in a vehicle width direction, an attachment part 36 attached to a vehicle body, and extends downwards from a cooling device in an attached state of the air guide body, in which the attachment part 36 is attached to the vehicle body. A reinforcing sheet 32 includes, in one piece: a sheet-like reinforcing part 37 which is fixed to the attachment part 36 in a manner overlapping the same from the front or rear of the vehicle and which reinforces the attachment part 36; and a sheet-like vertical wall support part 38 which extends so as to bend from the reinforcing part 37 to the front or rear of the vehicle. A vertical wall 33 is fixed to the vertical wall support part 38 and extends further to the front in the vehicle than the air guide body 31 on both sides of the air guide body 31 in the vehicle width direction.

Description

Wind guide structure of vehicle cooling system

This disclosure relates to a wind guide structure that guides a running wind to a cooling device mounted on a vehicle body.

Patent Document 1 describes a wind guide structure in which a wind guide body for guiding running wind toward the condenser side is vertically provided at the rear end of a condenser of a vehicle cooling device arranged on the lower surface of a vehicle body. .. The baffle is composed of a stay and a plate. The stay is formed of a hard material such as metal, and support pieces attached to the rear surface of the capacitor by screwing are provided on both sides of the upper end portion of the stay. The plate is formed of a soft material such as synthetic resin, and the upper end thereof is fixed to the stay.

Japanese Patent Application Laid-Open No. 8-216669

In the structure of Patent Document 1, the rearward load received by the wind guide from the traveling wind is concentrated on the left and right support pieces, so if the rigidity of the support pieces is low, the wind guide may vibrate.

In addition, when the traveling wind that hits the front surface of the wind guide from the front of the vehicle flows upward, it may escape to the outside in the vehicle width direction, and the traveling wind may not be efficiently guided to the cooling device.

Therefore, an object of the present disclosure is to provide a wind guide structure for a vehicle cooling device capable of suppressing vibration of the wind guide and efficiently guiding the traveling wind to the cooling device.

In order to achieve the above object, the first aspect of the present disclosure is a wind guide structure for guiding a running wind to a cooling device mounted on a vehicle body, which includes a wind guide, left and right reinforcing plates, and left and right vertical walls. .. The baffle has a plate shape having mounting portions mounted on the vehicle body side on both sides in the vehicle width direction, and the mounting portions hang down and extend below the cooling device in a state where the baffle is mounted on the vehicle body side. The reinforcing plate consists of a plate-shaped reinforcing portion that is fixed to the mounting portion from the front or the rear of the vehicle to reinforce the mounting portion, and a plate-shaped vertical wall support portion that bends and extends from the reinforcing portion to the front or the rear of the vehicle. And integrally. The vertical wall is fixed to the vertical wall support portion and extends forward of the vehicle from the wind guide on both sides of the wind guide in the vehicle width direction.

In the above configuration, the mounting portion where the load received from the traveling wind to the rear is concentrated is reinforced by the reinforcing portion, so that the vibration of the guiding body due to insufficient rigidity of the mounting portion can be suppressed.

Since the flow of the running wind from the front of the wind guide to the outside in the vehicle width direction can be regulated by the vertical wall, the running wind can be efficiently guided to the cooling device.

Since the angle and position of the vertical wall with respect to the baffle is defined by the angle and position of the vertical wall support portion with respect to the reinforcing portion of the reinforcing plate, the reinforcing plate having a different shape (the angle of the vertical wall supporting portion with respect to the reinforcing portion is different). By using, the angle and position of the vertical wall with respect to the wind guide can be changed without changing the shapes of the wind guide and the vertical wall.

In addition, the reinforcing plate that reinforces the mounting part of the baffle is also functioning as a bracket (vertical wall support) for fixing the vertical wall to the baffle, so compared to the case where the bracket is composed of separate members. The number of parts can be reduced.

The second aspect of the present disclosure is the wind guide structure of the first aspect, in which the wind guide has a hard plate-like base plate provided with a mounting portion and a flexible plate-like flexible plate fixed to the base plate and hangs down. It has a guide plate.

In the above configuration, since the lower part of the air guide is formed of a flexible guide plate, it is possible to prevent damage to the air guide due to interference between the lower end of the air guide and the road surface or the like.

The third aspect of the present disclosure is the wind guide structure of the first or second aspect, in which the vertical wall bends and extends from the reinforcing portion to the front of the vehicle, and the end surface of the lower portion of the wind guide body on the outer side in the vehicle width direction. Approaches or contacts from the outside in the vehicle width direction.

In the above configuration, the displacement (fluttering) of the wind guide in the vehicle width direction can be suppressed by the vertical wall.

According to the present disclosure, it is possible to suppress the vibration of the wind guide and efficiently guide the running wind to the cooling device.

FIG. 1 is a side view of a vehicle having a wind guide structure according to an embodiment of the present disclosure. FIG. 2 is a side sectional view showing a main part of FIG. FIG. 3 is a front view of the wind guide structure of FIG. 2 as viewed from the front. FIG. 4 is a perspective view of the reinforcing plate of FIG. FIG. 5 is a cross-sectional view taken along the line VV of FIG. FIG. 6 is a sectional view taken along line VI-VI of FIG.

Hereinafter, one embodiment of the present disclosure will be described with reference to the drawings. In each figure, FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inner side in the vehicle width direction. Further, in the following description, the left-right direction means the left-right direction in a state of facing the front of the vehicle.

As shown in FIG. 1, the vehicle 1 provided with the wind guide structure according to the present embodiment is a cab-over type truck in which the cab 2 is generally arranged above the engine 3, and supports the cab 2, the engine 3, and the like. It has a vehicle body frame 4 and a front bumper 5 extending in the vehicle width direction at the lower part of the front end of the vehicle 1.

As shown in FIG. 2, the cab 2 has a front panel 6 which is arranged above the front bumper 5 and stands up substantially vertically at the front end of the cab 2, and a floor panel 7 which divides the lower end surface of the cab 2. .. The floor panel 7 is rear of a floor panel front portion 7a extending rearward from the front end of the cab 2, a floor panel inclined portion 7b extending rearward and upward from the rear end of the floor panel front portion 7a, and a floor panel inclined portion 7b. It has a floor panel rear portion 7c that bends from an end and extends rearward, and an engine room 8 accommodating an engine 3 and a cooling device 10 is partitioned below the floor panel inclined portion 7b and the floor panel rear portion 7c. That is, the engine room 8 is provided below the cab 2 at the front of the vehicle 1 (below the front of the vehicle 1). An opening 9 that allows air (running wind) to flow into the engine room 8 is formed at the center of the lower end of the front panel 6 in the vehicle width direction. The opening 9 is covered by a radiator grill (not shown) having a plurality of vents.

As shown in FIGS. 1 and 2, the vehicle body frame 4 includes left and right side members 11 extending in the front-rear direction of the vehicle 1 on both sides of the vehicle 1 in the vehicle width direction, and left and right side members extending in the vehicle width direction. It has a plurality of cross members 12 connecting the eleven. The plurality of cross members 12 have a first cross member 12a that connects the front ends of the left and right side members 11 to each other, and a second cross member 12b that is arranged at a position rearwardly separated from the first cross member 12a. The front bumper 5 is attached to the front surface of the first cross member 12a. Note that FIG. 2 shows only the right side member 11.

The engine 3 is arranged between the left and right side members 11 behind the second cross member 12b in the engine room 8, and is supported by the left and right side members 11 via an engine mount (not shown). The cooling device 10 includes a radiator fan 13, a radiator 14, a shroud 15, and an intercooler 16, and is arranged in front of the engine 3. The radiator fan 13 is connected to the drive shaft of the engine 3 and driven by the engine 3 to generate an air flow from the front to the rear. The radiator 14 is arranged in front of the radiator fan 13 to cool the cooling water of the engine 3. The shroud 15 is a tubular body extending in the front-rear direction, the front side of which is fixed to the radiator 14, the radiator fan 13 is arranged inside the rear side, and the air flow between the rear surface of the radiator 14 and the radiator fan 13. Divide the road. The rear end of the shroud 15 is arranged at a position separated forward from the engine 3, and a gap 25 is provided between the shroud 15 and the engine 3. The intercooler 16 is arranged in front of the radiator 14 and cools high-temperature air (supply air of the engine 3) compressed by a supercharger (not shown).

As shown in FIGS. 2 and 3, the radiator 14 has an upper tank 21, a lower tank 22, a radiator core 23 sandwiched between the upper tank 21 and the lower tank 22, and left and right support frames 24. It is a plate-shaped structure, which is arranged between the engine 3 in the engine room 8 and the second cross member 12b so as to intersect in the front-rear direction, and is fixed to the left and right side members 11 via brackets (not shown). Will be done. The lower side of the radiator 14 is arranged in front of the upper side in a side view and is inclined. The front surface portion 14a of the radiator 14 is composed of the front surface portions of the upper tank 21, the radiator core 23, the lower tank 22, and the left and right support frames 24, and intersects the front-rear direction. High-temperature cooling water flowing out of the engine 3 flows into the upper tank 21 via a radiator hose (not shown). The radiator core 23 has a plurality of tubes (not shown) extending in the vertical direction to allow the flow of cooling water and fins (not shown) fixed to the tubes, from the front surface to the rear surface of the radiator core 23. Allows the passage of air. The upper end of the tube of the radiator core 23 communicates with the upper tank 21, and the lower end of the tube communicates with the lower tank 22. The cooling water flowing into the upper tank 21 exchanges heat with the air passing from the front surface to the rear surface of the radiator core 23 when flowing from above to below in a plurality of tubes (not shown) of the radiator core 23. As a result, it is cooled and flows from the radiator core 23 into the lower tank 22. The lower tank 22 is arranged below the vehicle body frame 4, and the cooling water in the lower tank 22 cooled by the radiator core 23 circulates from the lower tank 22 to the engine 3 side via a radiator hose (not shown). ..

Below the cooling device 10, a wind guiding unit 30 that guides the traveling wind flowing through the lower part of the vehicle body to the cooling device 10 while the vehicle 1 is traveling is attached via the left and right brackets 29. The left and right brackets 29 are fixed to the lower ends of the front surface portion 14a of the radiator 14 in the vehicle width direction (in the present embodiment, the front surface of the lower end portion of the support frame 24 and the front surfaces of both ends of the lower tank 22 that do not store water inside). Being extended downwards. The bracket 29 may not be fixed to the cooling device 10 but may be fixed to another member on the vehicle body side such as the vehicle body frame 4.

As shown in FIGS. 3 to 5, the wind guide unit 30 includes a wind guide 31, left and right reinforcing plates 32, and left and right flaps (vertical walls) 33, and the wind guide 31 includes a base plate 34 and a guide plate 35. To be equipped.

The base plate 34 is a rectangular flat plate-shaped hard plate that is long in the vehicle width direction, and is formed of, for example, a hard resin or metal. The base plate 34 has plate-shaped mounting portions 36 on both sides (left and right) in the vehicle width direction, which are overlapped and fixed to the lower portions of the left and right brackets 29 from the front or the rear (front in the present embodiment).

The guide plate 35 is a rectangular flat plate-shaped flexible plate that is long in the vehicle width direction, and is formed of, for example, a soft material such as a synthetic resin or an elastic material such as a rubber material. The vertical width of the guide plate 35 is set longer than the vertical width of the base plate 34, and the length of the guide plate 35 in the vehicle width direction is set to be substantially equal to the length of the base plate 34 in the vehicle width direction. The upper portion of the guide plate 35 is overlapped with the front surface of the base plate 34, and is fixed to the base plate 34 by rivets, bolts, or the like at a plurality of positions in the vehicle width direction. With the guide plate 35 fixed to the base plate 34 and the base plate 34 fixed to the bracket 29, the guide plate 35 hangs down below the radiator 14, and the front surface 35a of the guide plate 35 intersects the front-rear direction.

The reinforcing plate 32 is a hard plate-like body having an L-shaped cross section integrally having a plate-shaped reinforcing portion 37 and a plate-shaped flap supporting portion (vertical wall supporting portion) 38, and is formed of, for example, a hard resin or metal. Will be done. The reinforcing portions 37 of the left and right reinforcing plates 32 are overlapped and fixed to the left and right mounting portions 36 of the base plate 34 from the front or the rear (rear in the present embodiment) to reinforce the left and right mounting portions 36, respectively. The flap support portion 38 bends and extends from the outer edge of the reinforcing portion 37 in the vehicle width direction to the front of the vehicle or the rear of the vehicle (front in the present embodiment).

The bracket 29, the mounting portion 36, and the reinforcing portion 37 are stacked in the order of the mounting portion 36, the reinforcing portion 37, and the bracket 29 from the front to the rear so as to sandwich the reinforcing portion 37 between the bracket 29 and the mounting portion 36. The mounting portion 36 and the reinforcing portion 37 are fastened and fixed to the bracket 29 by fastening members (bolts in the example of FIG. 5) 39 such as rivets and bolts that penetrate the overlapping portion.

The flap 33 is a flat plate-shaped flexible plate-like body, and is formed of, for example, a soft material such as a synthetic resin or an elastic material such as a rubber material. The flap 33 is overlapped on the inner surface or outer surface of the flap support portion 38 of the reinforcing plate 32 in the vehicle width direction (inner surface in the vehicle width direction in the present embodiment), and is flapped at a plurality of positions (two locations in the present embodiment) by rivets, bolts, or the like. It is fixed to the support portion 38. The left and right flaps 33 fixed to the left and right flap support portions 38 are in a posture crossing the vehicle width direction, and are in front of the vehicle front of the wind guide 31 (front surface 35a of the guide plate 35) on both sides of the wind guide 31 in the vehicle width direction. Extend to. The guide surface that guides the running wind upward toward the cooling device 10 is composed of the front surface 35a of the guide plate 35 and the inner surface of the flap 33 in the vehicle width direction.

The upper part of the flap 33 extends upward from the air guide 31 (upper end of the base plate 34), and the lower part of the flap 33 does not protrude below the lower end of the air guide 31 (guide plate 35). It extends downward to a height position equivalent to the lower end or a height position above the lower end of the baffle 31. Although FIGS. 2 to 4 show an example in which the front edge of the lower portion of the flap 33 is inclined so that the amount of protrusion from the front surface 35a of the guide plate 35 gradually decreases downward. The shape of the flap 33 is not limited to this, and can be set to any shape such as a rectangular shape in which the amount of protrusion from the front surface 35a of the guide plate 35 is the same over the entire vertical direction. Further, as shown in FIG. 6, the inner surface of the flap 33 in the vehicle width direction faces or approaches the end surface of the guide plate 35 (lower part of the baffle 31) on the outer side in the vehicle width direction from the outside in the vehicle width direction.

According to the present embodiment, the traveling wind flowing through the lower part of the vehicle body while the vehicle 1 is traveling is guided to the upper cooling device 10 by the front surface 35a of the guide plate 35, so that the cooling efficiency of the cooling device 10 can be improved. ..

Since the flow of the traveling wind from the front surface 35a of the guide plate 35 to the outside in the vehicle width direction can be regulated by the flap 33, the traveling wind can be efficiently guided to the cooling device 10.

Since the mounting portion 36 in which the rearward load received by the wind guiding body 31 (base plate 34) from the traveling wind is concentrated is reinforced by the reinforcing portion 37 of the reinforcing plate 32, the wind guiding body 31 (guide) due to insufficient rigidity of the mounting portion 36. The vibration of the plate 35) can be suppressed.

The angle and position of the flap 33 with respect to the air guide 31 (front surface 35a of the guide plate 35) are defined by the angle and position of the flap support portion 38 with respect to the reinforcing portion 37 of the reinforcing plate 32, and therefore have different shapes (flap with respect to the reinforcing portion 37). By using the reinforcing plate 32 of the support portion 38 having a different angle), the angle and position of the flap 33 with respect to the air guide 31 can be changed without changing the shapes of the air guide 31 and the flap 33.

Since the reinforcing plate 32 that reinforces the mounting portion 36 of the air guide body 31 also functions as a bracket (flap support portion 38) for fixing the flap 33 to the air guide body 31, when the bracket is composed of a separate member, Compared with this, the number of parts can be reduced.

Since the lower part of the wind guide 31 is formed of a flexible guide plate 35, it is possible to prevent the wind guide 31 from being damaged due to interference between the lower end of the wind guide 31 and the road surface or the like.

Further, since the flap 33 approaches or contacts the end surface of the guide plate 35 on the outer side in the vehicle width direction, which constitutes the lower part of the wind guide body 31, from the outside in the vehicle width direction, the guide plate 35 is displaced (fluttering) in the vehicle width direction. Can be suppressed by the flap 33.

Although the present disclosure has been described above based on the above-described embodiment, the present disclosure is not limited to the contents of the above-described embodiment, and of course, it can be changed as appropriate without departing from the present disclosure. That is, it goes without saying that all other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are included in the scope of the present disclosure.

For example, in the present embodiment, the example in which the air guide body 31 is composed of the base plate 34 and the guide plate 35 has been described, but the air guide body 31 may be composed of a single member (for example, only the guide plate 35).

This application is based on a Japanese patent application filed on September 18, 2019 (Japanese Patent Application No. 2019-169751), the contents of which are incorporated herein by reference.

Further, in the present embodiment, the mounting portion 36, the reinforcing portion 37, and the bracket 29 are stacked in this order from the front to the rear, but if the mounting portion 36, the reinforcing portion 37, and the bracket 29 overlap in the front-rear direction. Often, the stacking order can be set arbitrarily.

This disclosure is applicable to a vehicle equipped with a cooling device on the vehicle body, and is useful in that it can suppress the vibration of the wind guide and efficiently guide the traveling wind to the cooling device.

1: Vehicle 10: Cooling device 14: Radiator 14a: Front surface of radiator 30: Wind guide unit 31: Wind guide 32: Reinforcing plate 33: Flap (vertical wall)
34: Base plate 35: Guide plate 35a: Front surface of guide plate 36: Mounting part 37: Reinforcing part 38: Flap support part (vertical wall support part)
39: Fastening member

Claims

It is a wind guide structure that guides the running wind to the cooling device installed in the car body.
A plate-shaped air guide that has mounting portions mounted on the vehicle body side on both sides in the vehicle width direction and that hangs down and extends below the cooling device in a state where the mounting portions are mounted on the vehicle body side.
A plate-shaped reinforcing portion that is overlapped and fixed to the mounting portion from the front or rear of the vehicle to reinforce the mounting portion, and a plate-shaped vertical wall support portion that bends and extends from the reinforcing portion to the front or rear of the vehicle. Left and right reinforcing plates that integrally have
A wind guide structure for a vehicle cooling device, which is fixed to the vertical wall support portion and includes left and right vertical walls extending forward of the wind guide on both sides of the wind guide in the vehicle width direction.
The wind guide structure according to claim 1.
The wind guide structure of a vehicle cooling device is characterized by having a hard plate-shaped base plate provided with the mounting portion and a flexible plate-shaped guide plate fixed to the base plate and hanging down. ..
The wind guide structure according to claim 1 or 2.
The vertical wall extends from the reinforcing portion in a curved manner toward the front of the vehicle, and faces the end surface of the lower portion of the baffle guide body on the outer side in the vehicle width direction in close proximity to or in contact with the outer side in the vehicle width direction. Wind guide structure of the device.