JPS6124616A - Cooling air intake structure for engine room - Google Patents

Abstract

PURPOSE:To efficiently introduce running air for cooling to an engine room with the simple and economical structure of a midship type car by effectively using the space in a rear pillar to form an air path. CONSTITUTION:In a midship type car, a protruded section 12 is provided at the rear of a roof panel 7. This protruded section is formed with a stepped section 13 and a panel member 14 in a hollow shape and two or more cooling air intake ports 15 are opened on the front of the stepped section 13. In addition, a rear pillar 8 is also formed with an outer panel 16 and an inner panel 17 in a hollow shape and an inner air path 8A is connected to an air path 12A in the protruded section 12. Moreover, two or more cooling air intake ports 19 are opened on the front of the protrusion 8a. Furthermore, a duct 22 having an air path 22A that is connected to an air path 8A is provided on the front of a rear deck panel 6 and two or more cooling air exhaust ports 23 that are opened to an engine room 3 are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cooling air intake structure for an engine room.

(Prior art) It is necessary to take in sufficient cooling air into the engine room where the engine is installed.
As shown in Publication No. 38706, when the engine room is provided at the front of the vehicle body, a cooling air intake port must be opened at the front of the vehicle body so that a sufficient amount of cooling air can be taken in while driving. be.

By the way, for example, if the engine room is located at the rear of the car body, such as in a so-called midship car, the passenger compartment will be located in front of the engine room, so special measures will be required to take in cooling air. . For this reason,
It is common practice to open a cooling air intake in the rear fender, but in this case, the cooling air does not reach the upper part of the engine compartment sufficiently, so the "warmness" in this upper part is completely reduced. It will not be resolved until later. In order to eliminate this ``swampiness'' in the upper part of the carrot room, conventionally, an air outlet was often provided in the top part of the engine room, that is, on the rear deck. Due to the location of the room, etc., there were cases in which a sufficient air exhaust effect could not always be expected. In particular, cover the upper part of the rear door with a rear hatch, etc.
If this were done, it would be impossible to even provide an air outlet on the rear deck.

(Object of the invention) The present invention has been made in consideration of the above circumstances, and
To provide a cooling air intake structure for an engine room capable of sufficiently introducing cooling air into the upper part of an engine room provided at the rear of a vehicle body.

(Structure of the Invention) In order to achieve the above-mentioned object, in the present invention, the rear part of the roof panel and the rear pillar are used as a cooling air intake part, and are configured as a cooling air introduction duct connected to the upper part of the engine room. That's how it is.

Specifically, the rear part of the roof panel has a stepped part that projects upward and extends in the vehicle width direction, and a raised part that is made hollow by joining the panel members from the inside of the vehicle interior.
A cooling air intake is opened at the front of the step part that receives the running wind.
Also. A rear pillar formed into a hollow shape by an outer panel and an inner panel that are joined to each other is connected to the raised part at its upper part to communicate with the raised part, and the lower part thereof is connected to the upper part of the engine room. It is connected to. This hollow rear pillar has a cooling air intake opening in the front of the part that protrudes outward from the side window on the front side, that is, in the part that receives the driving wind. be.

With this configuration, the cooling air introduced into the rear pillar passes through the rear pillar and is introduced into the upper part of the engine room, and the cooling air introduced into the ridge also flows into the engine room after passing through the rear pillar. In this way, the cooling air is sufficiently introduced to the upper part of the engine room.

(Example) In FIG. 1, A is a car with so-called mid-shift power, 1 is a rear wheel, and 2 is a rear axle. An engine room 3 is formed at the rear of this automobile A, more precisely around and in front of the rear axle 2, and within this engine room 3 is an engine 4 that drives the rear wheels l via the rear axle 2. It is stored. This engine room 3 is
It is defined by a front partition panel 5 that extends vertically with respect to a two-seater passenger compartment, and its upper part extends rearward from the upper end of the front partition panel 5 in an almost horizontal direction, and then extends downward at one end. It is covered by a rear deck panel 6 that extends rearward again.

i1 In the figure, 7 is a roof panel, 8 is a rear pillar, and 9 is a rear hatch.The rear pillar 8 extends upward from the rear fender lO at the front end of the rear deck panel 6 and is connected to the roof panel 7. A rear hatch 9 is provided to cover the deck panel 6 from above. Of course, this rear hatch 9 is opened rearward as shown by arrow X in FIG. 1, and by providing such a rear hatch 9, a relatively large rear trunk room 11 is constructed on the rear deck panel 6.

As shown in FIGS. 2, 3, and 6, the rear portion of the roof panel 7 is hollow and has a raised portion 12 extending in the vehicle width direction. As shown in FIG. 3, this raised part 12 is formed into a hollow shape by a stepped part 13 that projects upward and a panel member 14 that is joined to this stepped part 13 from the inside of the vehicle interior, and is designed to prevent wind from traveling. A plurality of cooling air intake ports 15 are opened at intervals in the vehicle width direction on the front surface of the stepped portion 13 that is to receive the cooling air.

As shown in FIGS. 4 and 6, the rear pillar 8 is formed into a hollow shape by joining an outer panel 16 and an inner panel 17. The rear pillar 8 is joined to the raised part 12 at its upper part and communicates with the inside of this raised part 12, that is, the outer panel 16 is connected to the stepped part 13, and the inch panel 17 is connected to the panel member 14.
an air passageway 12 formed within the raised portion 12;
A is in communication with an air passage 8A formed in the rear pillar 8. The rear pillar 8 has a protruding part 8a that protrudes further outward from the vehicle body than the side window 18 in front of the rear pillar 8.The rear pillar 8 has a protruding part 8a that protrudes further to the outside of the vehicle body than the side window 18 in front of the rear pillar. Multiple cooling air intakes 1
9 is open.

At the front of the rear deck panel 6, as shown in FIGS. 5 and 6, there is an upper panel 2 extending in the vehicle width direction.
A hollow duct 22 is formed by joining 0 and the lower panel 21, and the lower panel 21 has a plurality of cooling air exhaust ports 23 opened at intervals in the vehicle width direction and each opening into the engine room 3. ing. Then, this duct 22 and the lower part of the rear pillar 8 are joined and communicated with each other, that is, the outer panel 16 of the rear pillar 8 is connected to the lower part of the rear pillar 8.
The inner panel 17 of the rear pillar 8 and the upper panel 20 of the duct 22 are joined together.
The air passage 8A in the rear pillar 8 and the air passage 22A in the duct 22 are connected to each other.

With the above-described configuration, each air passage 12A, 8A, and 2
2A will form an annular air passage,
Cooling air that enters the inside of the rear pillar 8 from the cooling air intake 19 while the vehicle is running passes through the duct 22 and is introduced into the upper part of the engine room 3 from the cooling air outlet 23 thereof. Cooling air that enters the inside of the raised portion 12 from the cooling air intake port 15 while the vehicle is running passes through the rear pillar 8 and is then introduced into the upper part of the engine room 3 as in the case described above.

Of course, the cooling air introduced into the engine room 3 from the upper part contacts the engine 4 to cool it, and then flows out from the bottom of the vehicle body.

Although the embodiments have been described above, the present invention is not limited thereto, and includes, for example, the following cases.

(The stepped portion 13 of the raised portion 12 may be integrally molded with the roof panel 7, or the raised portion 12 and the rear pillar 8 may be integrated in advance and the duct 22 may also be integrated.) Thereafter, this integrated product may be integrally molded to the roof panel 7 or the rear fender 10.

(2) The lower part of the rear pillar 8 may open directly to the upper part of the engine room 3 directly or through a pipe material, without passing through the hollow duct 22 extending in the vehicle width direction. However, if the duct 22 is provided as in the embodiment, it is preferable in terms of increasing the rigidity of the vehicle body, and if the duct 22 is provided with a plurality of cooling air discharge ports 23 at intervals, Engine room 3 (7
) This is preferable in terms of distributing the cooling air to the upper part as much as possible, that is, supplying it uniformly.

(Effects of the Invention) As is clear from the above description, the present invention is capable of sufficiently introducing cooling air into the upper part of the engine room, and completely eliminates the "warmness" in the upper part of the engine room. I can do it. In particular, since the cooling air intake port has an opening on the surface that receives the traveling wind, it is extremely advantageous in terms of the efficiency of introducing the cooling air into the upper part of the engine room.

Furthermore, since the space within the rear pillar is effectively utilized and configured as an air passage, it is advantageous in terms of structure and cost compared to the case where a separate duct for the air passage is provided.

Furthermore, since the rear pillar and the raised part have a hollow structure with high rigidity, this part functions as a so-called roll bar, which is extremely favorable in terms of protecting the occupants in the event of a rollover.

[Brief explanation of drawings]

FIG. 1 is a side view with the front portion omitted, showing an example of an automobile to which the present invention is applied. FIG. 2 is a front view of the car shown in FIG. 1, viewed from the front, with the lower part omitted. FIG. 3 is a sectional view taken along the line mm in FIG. 2. FIG. 4 is a sectional view taken along the line IV--IV in FIG. 2. FIG. 5 is a sectional view taken along line V-V in FIG. 6. FIG. 6 is a simplified diagram showing the connection relationship between the protrusion, the rear pillar, and the duct, as seen from the front and rear directions of the vehicle body. A: Automobile 3: Engine room 4: Engine 7: Roof panel 8: Rear pillar 8a: Projection part 12 Two raised parts 13: Stepped part 4: Panel member 15.19: Cooling air intake 23: Cooling air outlet Patent Junjin Mazda Motor Corporation

Claims (1)

[Claims] (1) It is a structure for introducing cooling air into the engine room provided at the rear of the vehicle body, and the rear part of the roof panel that makes up the upper part of the vehicle body has a stepped part that protrudes upward and extends in the width direction of the vehicle. At the same time, a hollow raised part is formed by joining the panel members from the inside of the vehicle interior, and a rear pillar formed hollow by the mutually joined outer panel and inner panel is attached to the raised part at the upper part of the rear pillar. joined and communicated with the raised part, and connected to communicate with the engine room at the lower part thereof, a cooling air intake is opened in the front surface of the stepped part of the raised part, and a cooling air intake is opened in the rear pillar. A cooling air intake structure for an engine room, characterized in that a cooling air intake opening is opened in the front of a protruding portion that protrudes further to the outside of a vehicle body than a side window located in front of the side window.