JPS6012378A - Construction of front under cover - Google Patents

Abstract

PURPOSE:To prevent a front under cover from damage by flection even if its extension member interferes with a road surface, by substantially increasing the length of a part corresponding to a flange of the front under cover so as to cause a radiator to provide a larger amount of air allowed to pass therethrough. CONSTITUTION:An extension member 12 consisting of elastic material such as rubber is successively provided to the rear end terminal of a front under cover 11 made of iron or synthetic resin covering the bottom part of an engine compartment E. This extension member 12, being extended in a downward direction toward the rear of a vehicle, is mounted to the front under cover 11 by a fastener 13. The front under cover 11 forms so as to protrude not its rear end terminal but the extension member 12 only to a road surface interference zone Z.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a front undercover structure for an automatic tonnage.

b. Prior art The front undercover structure of a conventional automatic tunnel is as follows:
For example, there is one shown in FIG.

(Please refer to page 1-0 of Service Bulletin No. 4t\θ (Introduction to T//Type O) published by our company in June 1981.) In other words, the bumper and λ in the figure are Apron, 3 is the grill, Z is the radiator, evening is the first cross member,
O is the hood, 7 is the engine, za is the tires, and wa is the front undercover that extends behind the first cross member and covers the lower part of the engine room E.Basically, it has a gentle arch shape that is convex upward. A diagonally downward flange 9a is formed at the rear end. This front undercover 9 not only prevents chipping and achieves sound insulation effects, but also generates a negative pressure area at the rear end, draws the airflow A from the front of the vehicle into this negative pressure area, and overflows the radiator tag 31b. This increases the air flow rate in the engine room E and contributes to cooling the engine 7.

In this case, the longer the flange 9a is, the more the radiator tag can pass through the air sleeve, and the cooling function of the engine 7 is improved.

However, in the conventional structure, the front undercover 2, including the flange 9a, was an integral part made of a hard material such as iron or synthetic resin. was regulated.

In other words, the length of the flange 9a (7 runs because it would interfere with the road surface and cause damage) could not be made long enough. Therefore, a sufficient amount of air passing through the radiator could not be secured, and the cooling performance of the engine 7 was also limited. Furthermore, in order to improve the cooling performance of the engine 7, it would be possible to increase the capacity of the radiator tank, but this would significantly increase the cost and could not be adopted.

C0 Purpose The present invention was devised in view of such conventional problems, and it is possible to improve the engine cooling performance by increasing the passage air of the radiator without being damaged even when subjected to road surface interference, and without increasing the capacity of the radiator. The main objective is to provide a front undercover structure that allows the front undercover structure to be improved.

d. Structure In order to achieve the above object, the present invention provides an extension member made of an elastic material extending downward from the rear end of the front undercover at the rear end of the front undercover, thereby improving the conventional front undercup. By substantially increasing the length of the portion corresponding to the flange of the radiator, the amount of air passing through the radiator is increased, and even if the extension member interferes with the road surface, it is prevented from being bent and damaged.

e. Embodiment In FIGS. 2 and 3, a front undercover made of iron or synthetic resin (e.g. P-PJ) covers the lower part of the engine room E. //The rear end is an extension member made of an elastic material such as rubber. 12 are connected to each other.This extension member 12 extends downward toward the rear of the vehicle, and is attached to the front under cover.
It is attached by fastener /3. The rear end of the front undercover // does not protrude into the road interference zone 2, and only the extension member t protrudes into the road interference zone 2. Extension member 12
is tilted at an angle of about 600 degrees with respect to the horizon.

Following this configuration, the front undercover l/ is an extension member 12 that is considered to be a part of the front undercover //.
Therefore, the length can be made substantially sufficient, and the cooling performance of the engine 7 can be significantly improved by ensuring a sufficient air flow through the radiator. It has been experimentally confirmed that this effect is best when the inclination of the extension member 12 is around 600 degrees. On the other hand, since the extension member 12 is made of an elastic material, it will not easily bend and break even if it interferes with the road surface.

In addition, the extension member 1 for the front under cover //
Other examples of the second attachment means are shown in FIGS. Z to FIG.

In other words, in Figure 1, the extension member 1 is inserted using the stapler ia.
2 attached to the front under cover //.
In this case, the material of the front undercover l/ is synthetic or resin.

No.! The figure shows the extension member 12 attached to the front undercover ll using J nuts/S, and in this case, synthetic resin (or iron) is used as the material for the front undercover //.

FIG. 6 shows the extension member 12 attached to the front undercover/I using rivets (/6), and in this case as well, synthetic resin (or iron) is used as the material for the front undercover//.

In FIG. 7, the front undercover // and the extension part side 12 are integrally formed of synthetic resin (-1) At this time, a large amount of powdered rubber 17 is mixed into the portion corresponding to the extension member 1 to give elasticity.

f. Effects As explained above, according to the present invention, a sufficient amount of air passing through the radiator can be ensured without damaging the extension part, which is regarded as a part of the front undercover (and without increasing the radiator capacity). The effect is that the cooling performance of the engine can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of the front part of an automatic vehicle showing a conventional front undercover measure, FIG. 2 is a schematic side view of the main part showing an embodiment of the present invention, and FIG. The perspective view and FIGS. 7 to 7 are explanatory vertical side views showing means for attaching the extension member to the front undercover. //...Front undercover, 12...Extension member. Bozu area

Claims (1)

[Claims] A front undercover structure characterized in that an extension member made of an elastic material and extending downward from the rear end of the front undercover is disposed at the rear end of the front undercover covering the lower part of the engine room.