JPH0412812Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a cooling outside air introduction duct for cooling the engine room of a car, for example, and equipment such as an engine and a transmission installed in this engine room. It is related to.

[Conventional technology]

In recent years, shielding members such as engine undercovers have been installed on the lower side (ground side) of the engine room for the purpose of improving aerodynamic characteristics when driving a car and preventing sand, pebbles, etc. from flying into the engine room (so-called flying stones). The number of vehicles that are equipped with this is increasing, but this shielding member (engine under cover, etc.) reduces the amount of cooling outside air that flows into the engine compartment from the lower side of the vehicle (ground side) (the amount of cooling outside air supplied is reduced). In this case, the engine room and the equipment installed in the engine room, such as the engine room and transmission, cannot be sufficiently cooled.

Therefore, conventionally, as shown in FIGS. 6 and 7, outside air is used outside the vehicle (in front of the vehicle) to cool the engine room E and various devices 1 such as the engine and transmission installed in the engine room E. A cooling outside air introduction duct 20 is provided so as to take in the cooled outside air from the inside of the engine room E and guide it into the engine room E (near the various devices 1). As shown in FIGS. 6 and 7, this cooling outside air introduction duct 20 has an opening 21 at one end of the cooling outside air introduction duct 20.
0 is attached to the front bumper at the lower front side of the vehicle or to the balance panel 3 or the like at the lower part of the front bumper through an opening (attached by inserting a clip or the like (not shown) into the attachment part 250).
In addition, the other end opening 220 of the cooling outside air introduction duct 20 extending from the one end opening 210 in the vehicle longitudinal direction (vehicle rear side) is located near the equipment 1 such as an engine or transmission installed in the engine room E. It is opened and installed. Also,
The front side of the vehicle in the engine room E is equipped with a radiator that exchanges heat with cooling water for cooling the engine, and in order to drain the cooling water in the radiator to the ground side, the cooling outside air is The introduction duct 20 has a duct lower wall 2 extending from the duct upper wall 230 so as to pass through the duct upper wall 230 and the duct lower wall 240 which face each other vertically to form the cooling outside air introduction duct 20.
A through hole 40 is formed to extend toward the radiator 40, and the cooling water in the radiator is drained to the ground side through the through hole 40.

Incidentally, as a prior art showing the above-mentioned outside air introduction duct structure for cooling the engine room and equipment such as the engine and transmission installed in the engine room, there is, for example, the earlier application of the applicant of this invention. Utility Model No. 60-37969 (unknown)
There is.

[Problem that the invention attempts to solve]

However, in the case of the cooling outside air introduction duct structure shown in FIGS. 6 and 7, the cooling outside air introduction duct 2
When the cooling water in the radiator is drained to the ground side through the through hole 40 formed through the hole 0, when the cooling water is directly flowed into the through hole 40, the lower side of the through hole 40 is opened. Since the duct lower wall 240 of the cooling outside air introduction duct 20 is flat, the cooling water (partially) that has passed through the through hole 40 is transmitted through the flat duct lower wall 240 (lower surface) and flows through the through hole. It spreads around the hole 40 and drips in a wide area on the ground side, so the so-called through hole 4
Since the cooling water drained through the duct 0 will scatter around the duct, for example, the container for receiving the drained cooling water may be made large, or the through hole 40 in the duct lower wall 240 may be damaged due to the cooling water scattering around the duct. The area around the radiator and the area on the ground side become dirty, which deteriorates the workability (so-called serviceability) when draining the cooling water inside the radiator. In order to prevent such a problem (splashing of cooling water around), for example, as shown in Fig. 6, a drain hose 7 (drain pipe) is attached to the cooling water outlet of the radiator, and this drain hose 7 The end 71 side of the drain hose 7 is inserted into the through hole 40 as shown in FIG. 6, and the end 71 of the drain hose 7 inserted into the through hole 40 is inserted into the through hole 40.
The cooling water inside the radiator is allowed to flow through the duct lower wall 240 by slightly protruding toward the ground side than the duct lower wall 240 where the lower side of the radiator is opened (as shown in Fig. 6).
The water can be drained (dropped) substantially straight onto the ground via the drain hose 7 inserted into the through hole 40 without being transmitted to the bottom surface or scattered around. However, in the structure in which the drain hose 7 is inserted into the through hole 40 as shown in FIG.
In order to use this drain hose 7, the number of parts increases and the cost increases significantly.Also, it becomes necessary to install the drain hose 7 to the cooling water outlet of the radiator, and the drain hose 7 An operation is required to insert the end portion 71 side into the through hole 40 formed through the cooling outside air introduction duct 20, and this insertion operation involves inserting the relatively flexible drain hose 7 into the narrow diameter through hole 40. Since the work is difficult and cannot be done quickly (that is, the number of man-hours for the insertion work increases), the efficiency of work such as insertion of the drain hose 7 into the through hole 40 is reduced, especially when assembling a vehicle. This is extremely inappropriate work on a line (that is, the number of man-hours increases and the workability is poor).

Therefore, the purpose of this invention is to scatter cooling water into the radiator and around it through a through hole formed in the cooling outside air introduction duct without using a drain hose or the like and without increasing the number of parts, costs, and work hours. The goal is to ensure that water drains to the ground without any problems.

[Means for solving problems]

Therefore, this invention solves the above-mentioned problem by providing an uneven step to prevent the cooling water that has passed through the through hole formed in the cooling outside air introduction duct from being transmitted to the lower wall of the duct forming the cooling outside air introduction duct. This problem is solved by forming an attachment part on the periphery of the through-hole in the lower wall of the duct where the lower side of the through-hole is open.

More specifically, referring to the reference numerals shown in FIG. 1, cooling outside air is introduced into the engine room E to cool the equipment 1 such as the engine and transmission installed in the engine room E. The duct 2 has an opening 21 at one end of the cooling outside air introduction duct 2 and is attached to the lower part (balance panel) 3 on the front side of the vehicle, and an opening 22 at the other end of the cooling outside air introduction duct 2.
The cooling outside air introduction duct 2 has a through hole 4 for draining cooling water in a radiator installed on the front side in the engine room E.
In the cooling outside air introduction duct formed by penetrating from the duct upper wall 23 to the duct lower wall 24 forming the cooling outside air introduction duct 2, the duct lower wall 2 of the cooling outside air introduction duct 2
An uneven stepped portion 5 is formed on the hole periphery 41 of the through hole 4 formed in the hole 4, and when the cooling water in the radiator is drained from the through hole 4, the stepped portion 5
This prevents the cooling water drained from being transmitted to the duct lower wall 24.

[Effect]

According to the above-mentioned means, an uneven end 5 (see FIG. In the embodiment shown in FIG. 1, a concave stepped portion 5) facing from the duct lower wall 24 to the duct upper wall 23 is formed, so that the cooling water in the radiator can be drained from the through hole 4 through the through hole 4. When water flows directly, the cooling water passing through the through hole 4 is drained (partially) at the concave stepped portion 5 formed on the hole periphery 41 of the through hole 4 in the duct lower wall 24. It is possible to prevent water from flowing along the duct lower wall 24 (lower surface) and spreading around the hole periphery 41 of the through hole 4 (i.e., the drained cooling water is prevented from scattering around), thereby making it easier to drain water. In addition to improving serviceability, the number of parts and cost can be reduced because the through hole 4 functions as a so-called drain hose and a drain hose or the like can be omitted. It also eliminates the need for the difficult (difficult) work of arranging a drain hose (inserting it into a through hole, etc.) and greatly reduces the number of work hours. The installation workability can be greatly improved.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

The drawings from FIG. 1 to FIG. 5 show an embodiment of this invention, and as shown in FIG. The opening 21 at one end of the cooling outside air introduction duct 2 disposed in the engine room E is connected to the front bumper or balance panel 3 disposed at the lower front side of the vehicle (in the embodiment shown in FIG. 5). It is opened and attached to the balance panel 3).
That is, the cooling outside air introduction duct 2 is attached to the balance panel 3 by inserting a clip 6 or the like shown in FIG. The opening 22 is opened and installed near the equipment 1 such as an engine and a transmission installed in the engine room E. In addition, the cooling outside air introduction duct 2 has a through hole 4 for draining cooling water in a radiator (not shown) installed on the front side of the vehicle in the engine room E to the ground side.
is formed to penetrate from the duct upper wall 23 forming the cooling outside air introduction duct 2 toward the duct lower wall 24 .

In the cooling outside air introduction duct configured as described above, as shown in FIGS. 1 to 3 and 5, the duct upper wall 23 and the duct bottom face each other vertically to form the cooling outside air introduction duct 2. The lower side of the through hole 4 is formed stepwise from the duct upper wall 23 to the duct lower wall 24 so as to penetrate through the wall 24. A stepped portion 5 is formed in a concave shape (that is, a concave shape in the cooling outside air introduction duct 2 so as to face from the duct lower wall 24 to the duct upper wall 23).

When draining the cooling water in the radiator (not shown) from the through hole 4 formed through the cooling outside air introduction duct 2 (draining the cooling water in the radiator), the through hole 4 is By directly flowing (passing) the cooling water, the cooling water passing through the through-hole 4 is directed to the bottom of the duct at the hole peripheral edge 41 of the through-hole 4 in the duct lower wall 24 where the lower side of the through-hole 4 is opened. A concave stepped portion 5 is formed on the hole periphery 41 of the through hole 4 in the lower wall 24 of the duct, and this stepped portion 5 is connected to the lower wall 24 of the duct. The through hole 4 is recessed from the bottom surface of the duct to the upper wall 23 (that is, the upper side).
The stepped portion 5 allows the cooling water to flow from the hole periphery 41 of the through hole 4 to the duct lower wall 24.
(lower surface), and can reliably prevent the cooling water from spreading around the hole periphery 41 of the through hole 4 through the duct lower wall 24 (lower surface). It is.

Therefore, when the cooling water in the radiator is drained, the cooling water that passes through the through hole 4 is not transmitted to the duct lower wall 24 (lower surface), and the through hole in the duct lower wall 24 4 can be prevented from spreading around the hole periphery 41, and can be reliably dripped within a narrow range on the ground side, and the cooling water drained through the through hole 4 can be Since there is no scattering to the surroundings on the duct lower wall 24 and the ground,
The container for receiving the drained cooling water can be downsized, and the area around the hole periphery 41 of the through hole 4 in the duct lower wall 24 (lower surface) and the area on the ground will never get dirty, and the inside of the radiator will not get dirty. This greatly improves workability (so-called serviceability) when draining cooling water.

Further, the concave stepped portion 5 formed on the hole periphery 41 of the through hole 4 in the duct lower wall 24 allows the cooling water to pass through the through hole 4 to flow through the duct lower wall 2.
4 (lower surface) and spreading around the hole periphery 41 of the through hole 4. Therefore, the stepped portion 5 is formed to slightly protrude toward the ground side, and as in the prior art configuration shown in FIGS. 6 and 7 described above, the stepped portion 5 slightly protrudes from the duct lower wall 240. In other words, the through hole 4 can be constructed in the same state as the drain hose 7 inserted into the through hole 40. In other words, the through hole 4 has the function of the drain hose 7 of the prior art (to the lower surface of the lower wall 24 of the cooling water duct to be drained). Since the drain hose 7 and the like shown in the prior art can be made unnecessary, the drain hose 7 and the like shown in the prior art can be configured to perform the function of preventing the flow of water from spreading to the periphery of the hole periphery 41 of the through hole 4.

Therefore, by eliminating the need for a drain hose, etc., it is possible to greatly reduce the number of parts and costs associated with this drain hose, etc., and it is also possible to attach the drain hose, etc. to the radiator (cooling water outlet). Since the laborious (difficult) work of arranging the drain hose, such as the work of inserting it into the through hole 4, is completely unnecessary, the number of work steps can be greatly reduced. In particular, the through hole 4 and the concave stepped portion 5 formed on the hole periphery 41 of the through hole 4 can both be formed at the time of forming the cooling outside air introduction duct 2, and the formed cooling outside air introduction duct 2 can be formed as a single unit. In the state, the through hole 4 and stepped portion 5
is already formed, so the work on the vehicle assembly line is to install the cooling outside air introduction duct in which the through hole 4 and the stepped part 5 are formed at a predetermined location in the engine room E, and the work on the vehicle assembly line is to install the cooling outside air introduction duct in which the through hole 4 and the stepped part 5 are formed at a predetermined location in the engine room E. As described above, since there is no need to install a drain hose or the like when installing the cooling outside air introduction duct 2 on the vehicle assembly line, the number of work steps on the vehicle assembly line does not increase, and the cooling outside air introduction on this vehicle assembly line is not necessary. The workability of attaching the duct 2 to the vehicle (inside the engine room E) can be greatly improved.

In addition, the above embodiments (Figs. 1 to 3 and 5)
), the cooling water passing through the through hole 4 is transmitted to the duct lower wall 24 (lower surface) and the through hole 4
In order to prevent the hole from spreading around the hole periphery 41,
Although the stepped portion 5 formed on the hole periphery 41 of the through hole 4 in the duct lower wall 24 is recessed so as to face from the duct lower wall toward the duct upper wall 23, Without being limited thereto, for example, as shown in FIG. It may also be formed into a shape,
Even with the convex stepped portion 5 shown in FIG. 4, it is possible to obtain the same effect as the configuration of the concave stepped portion 5 shown in FIGS. 1 to 3 and 5 described above. It is something. That is, this stepped portion 5 is connected to the duct lower wall 2.
The cooling water passing through the through hole 4 at the hole periphery 41 of the through hole 4 in the duct lower wall 24
Stepped portion 5 formed so as not to be transmitted to the (bottom surface)
Any configuration may be used.

[Effect of idea]

As described above, this invention is a step in which an uneven stepped portion is formed on the periphery of the through hole in the lower wall of the duct, where the lower side of the through hole formed through the cooling outside air introduction duct is open. When the cooling water inside is drained from the through hole, the cooling water that is drained through the through hole is transmitted to the lower wall of the duct by the stepped part without using a drain hose, etc., and the hole periphery of the through hole. It is possible to reliably prevent the cooling water from spreading to the surrounding area, prevent the drained cooling water from scattering to the surrounding area, and ensure that the water is drained to the ground, improving workability (so-called serviceability). By not using drain hoses, etc.,
The number of parts, costs, and man-hours for each work can be greatly reduced, and the workability of attaching the cooling outside air introduction duct to the vehicle on the vehicle assembly line can be greatly improved.

[Brief explanation of the drawing]

The drawings from FIG. 1 to FIG. 5 show an embodiment of this invention, and FIG. 1 is a sectional view taken along the line I-I in FIG. The figure is a perspective view of the cooling outside air intake duct, Figure 4 is an enlarged view equivalent to Figure 2 showing another embodiment of this invention, and Figure 5 is a schematic diagram of the front side of the engine room where the cooling outside air intake duct is installed. The perspective view, FIG. 6, and FIG. 7 show the conventional example, and FIG. 6 is a sectional view equivalent to FIG.
FIG. 7 is a perspective view corresponding to FIG. 5. E...Engine room, 1...Equipment (engine and transmission), 2...Cooling outside air introduction duct, 21...One end opening, 22...Other end opening, 23...Duct upper wall, 24... ...Duct lower wall,
3...Balance panel (lower front side of the vehicle), 4...
...Through hole, 41... Hole periphery, 5... Stepped portion.

Claims (1)

[Scope of utility model registration request] A cooling outside air introduction duct that introduces outside air into the engine room to cool equipment such as the engine and transmission installed in the engine room, and one end opening of this cooling outside air introduction duct is on the front side of the vehicle. The cooling outside air introduction duct is installed with an opening at the bottom, and the other end of the cooling outside air introduction duct opens near the equipment in the engine room. In the cooling outside air introduction duct, a through hole for draining water is formed in a duct lower wall of the cooling outside air introduction duct from an upper wall of the duct forming the cooling outside air introduction duct to a lower wall of the duct. An uneven stepped portion is formed on the periphery of the through hole, and when cooling water in the radiator is drained from the through hole, the stepped portion allows the drained cooling water to be transmitted to the lower wall of the duct. A cooling outside air introduction duct characterized by preventing