JPS6037846Y2 - Structure of automobile radiator grill - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the structure of a radiator grill that is placed on the front of a vehicle to protect the radiator of the vehicle, and in particular the inclination angle of the fins provided at the top of the grill. is made variable.

(Prior art) Conventionally, automobile radiator grills have been made of metal or plastic molded products to protect the radiator, and the opening area of the grill has been designed to provide sufficient ventilation to cool the radiator when the automobile is running at low speeds. It had been done.

(Problems to be Solved) With the conventional radiator grill structure of automobiles described above, when the vehicle is running at high speed, the air resistance when the wind passes through the grill becomes extremely large, which reduces the maximum speed and reduces the engine load. This has caused problems such as deterioration of fuel efficiency due to the increase in fuel consumption.

(Purpose of the invention) The present invention was made in view of the above points, and by reducing the air resistance of the radiator grill when the vehicle is running at high speed, the engine load is reduced and the maximum speed is increased and the maximum speed is increased when the vehicle is running at high speed. To provide a structure of a radiator grill for an automobile, which can improve the fuel efficiency of a car and also ensure a constant amount of cooling air necessary for cooling the engine during high-speed driving.

(Structure of the present invention) The structure of the present invention, which is distantly related to the above object, is a radiator grill arranged at the front of the vehicle, wherein the lower end of the radiator grill projects forward from the upper end and is inclined as a whole; The lower part is provided with substantially horizontal fixed fins spaced vertically, and the upper part is provided with a plurality of variable fins spaced vertically, and the variable fins are separated from the rear support part and the front variable part. The variable portion extends forward from the support portion, is elastically supported by the support portion, and moves downward as if closing the opening of the grill while increasing its inclination angle due to the wind pressure of the vehicle, and when fully closed, the outer surface lowers forward. It is characterized by forming a flat surface slanted to the top and being in line with the front end of the vehicle body.

(Description of Embodiments) Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

In FIGS. 1 to 3, 1 is a bonnet that constitutes the upper part of the front body of the automobile, 2 is a bumper that constitutes the front end of the front body, and 3 is a skirt that constitutes the lower part of the front body. Inside the net 1, a radiator 4 is disposed at the front, and an engine 5 and the like are disposed behind the radiator 4.

Reference numeral 6 denotes a radiator grill that is disposed on the front of the vehicle between the front end of the bonnet 1 and the bumper 2, facing the radiator 4, and the lower end of the radiator grille 6 protrudes toward the front of the vehicle than the upper end. (however, the lower end of the radiator grille 6 is located at the rear of the bumper 2), and the opening 7 of the radiator grille 6 has a large number of fins 8, 8, which are inclined downwardly toward the front.
...9.9... are arranged at regular intervals vertically (in the height direction), and each fin 8, 9 is arranged almost parallel to the direction of vehicle travel, but the radiator grille 6 The several fins 8 at the top of the radiator grille 6 are variable fins, and the front part thereof is configured to be able to tilt downward according to the wind pressure while the radiator grille 6 is being driven.The other fins 9 at the bottom of the radiator grille 6 are fixed fins. Fixed to 6.

That is, as shown in FIG. 3, the inclination angle of the variable fins 8 increases in proportion to the increase in the running wind pressure (increase in the vehicle running speed), and ultimately the inclination angle of the variable fins 8 increases in proportion to the increase in the running wind pressure (increase in the vehicle running speed). In addition, when the opening is closed, several variable fins 8, 8 and 8.
... is provided to form an almost flat flat surface 10 that slopes downward in the front so as to smoothly guide the flow of wind upward, and furthermore, the variable fin 8 at the top level is almost the same as the front end surface of the bonnet 1. The flat surface 10 is provided so as to be inclined to the extent that it extends toward the front or slightly forward, so that the flat surface 10 is substantially continuous all the way to the front of the bonnet 1, so that the air flow can be made smoother.

Examples of such variable fins 8 include those shown in FIGS. 4 and 5.

That is, the variable fin 8 shown in FIG. 5 is the one illustrated in FIGS. 2 and 3, and has a variable portion 8a made of ABS resin at the front and is integrally fixed to the variable portion 8a at the rear. The spring plate support part 8b is attached to the radiator grille 6 to elastically support the variable part 8a via the spring plate support part 8b. In the variable fin 8' shown in FIG. 4, the variable part 8'a whose inclination angle is variable and the support part 8'b attached to the radiator grille 6 are entirely made of polypropylene resin.
A thin hinge 8'c is provided between the variable part 8'a and the support part 8'b.
(So-called P, P hinge) is provided to give the entire fin 8' a spring property. Therefore, both variable fins 8, 8' have a spring force when the traveling wind hits the fins 8° 8'. The variable parts 8a, 8'a are made to incline by producing resistance opposite to the above.

Further, as shown in FIG. 1, the radiator grill 6 has the following features:
It is divided by several (three in FIG. 1) vertical ribs 11,
Several fins as described above in each compartment8. 8',
Arrange the fins 8 and 9. 8'.

9 is constructed to strengthen the structure and facilitate molding.

The spoiler 12 is placed under the bumper 2 and has one end fixed to the skirt 3. The spoiler 12 has a variable inclination angle so as to increase the amount of wind introduced from the spoiler 12 as the wind pressure increases. It is provided.

Further, 13 is a front wheel, and 14 is a cooling fan.

Therefore, in the above embodiment, when the vehicle is running at low speed,
As shown in FIG. 2, since the running wind pressure on the radiator grille 6 is relatively small, the variable fins 8 and 8' do not tilt downward, but are aligned substantially parallel to the vehicle running direction and mutually constant together with the fixed fins 9. Since the spacing is maintained, running air is introduced through the openings between the fins 8 and 9 to cool the radiator 4 appropriately.

On the other hand, when the vehicle is running at high speed, as shown in FIG. 3, the running wind pressure on the radiator grille 6 increases;
Due to this increase in traveling wind pressure, the variable fins 8, 8' tilt downward and close the opening between the fins 8, 8.

In addition, since a front-sloping flat surface 10 is formed on the upper surface of each of the variable fins 8° 8', the flow of wind is smoothly guided upward, and the flat surface 10 is approximately the same as the front end surface of the bonnet 1. Because of this, the flow of the traveling air becomes even smoother, and the traveling wind that hits the upper part of the radiator grille 6 smoothly flows away from the flat surface 10 along the front part of the bonnet 1, as shown by the arrow.

Therefore, the running resistance of the radiator grille 6 is significantly reduced, the engine load is reduced, and it is possible to increase the maximum speed and improve fuel efficiency.

In addition, when a spoiler 12 with a variable inclination angle is installed under the bumper 2 as in the above embodiment, the spoiler can supplement the running air required to cool the radiator 4 during high-speed driving, so the fixed fin By changing some of the fins 9 to variable fins 8, running resistance can be further reduced.

As explained above, according to the present invention, the lower end of the radiator grill arranged at the front of the vehicle protrudes forward from the upper end, the lower part is provided with substantially horizontal fixed fins spaced vertically, and the upper part is provided with vertically spaced fixed fins. is provided with a plurality of variable fins spaced apart from each other, the variable fins are composed of a rear support part and a front variable part, and the variable part extends forward from the support part and is elastically supported by the support part, and By increasing the angle of inclination, the grille moves downward as if closing the opening, and when fully closed, the outer surface forms a flat surface that slopes downward and is aligned with the front end of the vehicle, making it possible to increase speed at high speeds. When driving, the wind that hits the upper front of the vehicle can be directed to flow along the upper body (bonnet), significantly reducing running resistance, increasing maximum speed, and reducing engine load. This makes it possible to improve fuel efficiency during high-speed driving, and furthermore, to reduce noise generated when the wind is introduced.

Furthermore, since fixed fins are provided at the bottom of the radiator grille, it is possible to secure a constant amount of cooling air necessary to cool the engine during high-speed driving.

It also has the advantage of being able to prevent overcooling due to the introduction of a large amount of running wind during high-speed running.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a perspective view of the front part of the vehicle, FIG. 2 is a longitudinal side view of the main part when running at low speed, and FIG. 3 is a longitudinal side view of the main part when running at high speed. figure,
FIG. 4 and FIG. 5 are sectional views each showing an example of a variable fin. 1...Honet, 2...Bumper,
3...skirt, 4...radiator,
5...Engine, 6...Radiator grill, 7...Opening, 8, 8'...Variable fin, 8a, 8'a... ...Variable part, 8b, 8
'b...Support part, 8'c...Thin hinge, 9...Fixed fin, 10...Flat surface, 11... Vertical rib, 12... Spoiler - 13... Front wheel, 14... Cooling fan.

Claims (1)

[Scope of utility model registration request] A radiator grill placed on the front of a vehicle, the lower end of the radiator grill protrudes forward from the upper end and is slanted as a whole, the lower part is provided with substantially horizontal fixed fins spaced vertically, and the upper part is provided with substantially horizontal fixed fins. A plurality of variable fins are provided at vertical intervals, the variable fins extend from a rear support part and a front variable part, and the variable part extends forward from the support part and is elastically supported by the support part, It moves downward as if closing the grille opening while increasing its angle of inclination due to the wind pressure of the vehicle, and when it is completely closed, the outer surface forms a flat surface that slopes forward and downward, and is in line with the front end of the vehicle body. Structure of automobile radiator grill.