JPH10226289A - Radiator grille for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the degree of freedom for designing and an opening area and to reduce the weight of components by forming the tip part of a horizontal fin to be thick and a base part to be thin and providing a level difference in the lower surface side of the horizontal fin. SOLUTION: A horizontal fin 7 is provided nearly along a horizontal line, disposed in upper and lower direction with a gap and extended from the front face of a radiator grill 1 toward the rear side of a car body. The tip part 7a of the horizontal fin 7 is formed to be thick and its base part 7b is formed to be thin. Further, a level difference 9 is provided in a lower surface side positioned in the rear side of the tip part 7a of the horizontal fin 7. Thus, the horizontal fin 7 is formed to be thin except the tip part 7a, resistance to air intake is small and the degree of freedom for designing is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator grill provided on a vehicle.

[0002]

2. Description of the Related Art Conventionally, a radiator grill 51 as shown in FIG. 9 is provided at a front end portion of a vehicle body such as an automobile in order to take in cooling air to a radiator. Such a radiator grille 51 is a synthetic resin part formed by an injection molding method, and includes a horizontal fin 52 and a vertical fin 5.
3 form a lattice. The horizontal fins 52 have a cross-sectional shape as shown in FIGS. 10 and 11, and the vertical fins 53 have a cross-sectional shape as shown in FIG. Meanwhile, in the conventional radiator grille 51, when the horizontal fins 52 and the vertical fins 53 are formed of a synthetic resin, a molding die 54 having a structure as shown in FIGS. 13 to 15 is used. The molding die 54 includes a fixed die 55 having a core and a movable die 56 having a cavity.

[0003]

However, in the above-described conventional horizontal fin 52 having a cross-sectional shape, when the fin portion is entirely formed of a resin using a molding die 54, as shown in FIG. Has a disadvantage that the fin surface 52b in the thickened portion is shrunk. Further, as shown in FIG. 11, when the fin portion of the horizontal fin 52 is formed with a constant thickness, the dimension L of the fin root portion 52a increases, so that the degree of freedom in design decreases and the horizontal fin 52 Was obstructing air intake from the front of the vehicle. The vertical fin 53 shown in FIG. 12 has the same problem. If the entire fin portions of the horizontal fins 52 and the vertical fins 53 are formed to be thin, not only the appearance quality is deteriorated but also there is a problem in strength.

Further, the molding method using the molding die 54 shown in FIG. 13 and FIG.
14 has a complicated shape, and in the case of the molding die 54 shown in FIG. 14, the fixed mold 55 also has a complicated shape, so that there is a problem that the mold manufacturing becomes difficult and the mold cost increases. . In addition, the production of the radiator grille 51 by the molding die 54 having a complicated shape causes an increase in the defective rate, and thus it has been difficult to improve the productivity of the parts.

The present invention has been made in view of such circumstances, and aims to increase the degree of freedom in design, increase the opening area, and reduce the weight and productivity of parts. It is an object of the present invention to provide a radiator grill for a vehicle, which can improve appearance quality.

[0006]

In order to solve the problems of the prior art, according to the first aspect of the present invention, there is provided a radiator grill for a vehicle which is formed in a grid by horizontal fins and vertical fins. The tip of the horizontal fin is formed to be thick and the base is formed to be thin, and a step is provided on the lower surface side of the horizontal fin.

In the present invention of claim 2, the root of the vertical fin of claim 1 is formed to be thick, and is formed so as to become gradually thinner toward the tip of the vertical fin. A step is provided at the tip of the vertical fin.

Furthermore, in the present invention of claim 3, the connecting portion between the horizontal fin of claim 1 and the vertical fin of claim 2 is
It is formed thinner than the middle part of the vertical fin.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments.

1 to 5 show an embodiment of a radiator grill for a vehicle according to the present invention. In the figure, 1
A radiator grill 1 is provided at the front end of the vehicle body of the vehicle. The radiator grill 1 is provided to take in cooling air to a radiator (not shown). The radiator grille 1 is an integrally molded product made of synthetic resin, and is attached to the periphery of the opening 2a of the front bumper 2, as shown in FIG. The front bumper 2 is fastened and fixed to the front end of the vehicle body 5 directly by a screw or a bolt 3 or via a bumper stay 4. The radiator grille 1 is composed of a frame 6 formed at an upper portion and a plurality of horizontal fins 7 and vertical fins 8 formed at a lower portion of the frame 6. The vertical fins 8 are formed in a lattice shape with a gap therebetween.

As shown in FIGS. 2 and 3, the horizontal fins 7 are provided along a substantially horizontal direction and are arranged at intervals in the vertical direction, and extend from the front of the radiator grill 1 toward the rear of the vehicle body. Extending. The horizontal fin 7 has a tip portion 7a formed to be thick and a root portion 7b formed to be thin. Moreover, the horizontal fins 7
A step portion 9 is provided on the lower surface side located behind the front end portion 7a. Therefore, the horizontal fin 7 is
Except for a, it is formed to be thin (thin), and has a structure in which resistance to air intake is small and design flexibility is improved.

As shown in FIGS. 2 and 4, the vertical fins 8 are provided along the vertical direction and are spaced from each other in the vehicle width direction. Extending towards. The vertical fin 8 is formed such that the root portion 8b is formed to be thick and the thickness gradually becomes thinner toward the distal end portion 8a. Moreover, a step 10 is provided at the tip 8 a of the vertical fin 8. The connecting portion 11 between the horizontal fin 7 and the vertical fin 8 is formed thinner than the intermediate portion 8c of the vertical fin 8, as shown in FIGS. As a result, the cross-sectional area of the coupling portion 11 is reduced, and the resistance to the intake of air is further reduced, and the degree of freedom in design is improved.

6 to 8 show a molding die 12 for the radiator grill 1. FIG. The molding die 12 includes a fixed die 15 having a core 13 of the horizontal fin 7 and a cavity 14 of the vertical fin 8, and a movable die 18 having cavities 16 and 17 of the horizontal fin 7 and the vertical fin 8. .

When the radiator grill 1 is molded by the molding die 12 having such a structure, thin horizontal fins 7 and vertical fins 8 can be obtained, so that the so-called sink marks caused by uneven thicknesses can be eliminated. Becomes possible. The fixed mold 15 and the movable mold 18 are partially protruded or recessed in order to form the core 13 and the cavities 14, 16 and 17, but their structures are simpler than the conventional molding dies. In addition, since the mold can be easily manufactured, the productivity can be improved. Further, as shown in FIG. 7, the vertical fin 8 is formed into a fin shape only by the movable die 18, and the connecting portion 11 where the horizontal fin 7 and the vertical fin 8 intersect is fixed as shown in FIG. 15 so that the vertical fins 8 are formed by both the movable dies 15 and the movable dies 18. L. Is changed and the horizontal fin 7 is connected to the core 13, so that the mold structure is simple even at the crossing portion, and the mold can be easily manufactured, so that the productivity can be improved.

In the radiator grill 1 according to the embodiment of the present invention, a horizontal fin 7 having a step 9 on the lower surface side is formed thin except for a tip 7a, and a step 10 is formed on the tip 8a.
Since the vertical fin 8 having the shape is gradually thinned from the root portion 8b to the distal end portion 8a, it is possible to increase an opening area for taking in air and to reduce the weight of components. In addition, since the thickness of the horizontal fins 7 and the vertical fins 8 can be formed uniformly, the radiator grille 1 having a fin shape without sinking can be obtained. Furthermore, since the radiator grill 1 according to the embodiment of the present invention is formed using the molding die 12 including the fixed die 15 and the movable die 18 having a simpler structure than the conventional one, the die production is facilitated. Can be performed, and productivity can be improved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes are possible based on the technical idea of the present invention. is there.

[0017]

As described above, the radiator grill of the vehicle according to the present invention is formed in a lattice shape by the horizontal fins and the vertical fins, and the end portions of the horizontal fins are formed thick. In addition, since the root portion is formed to be thin and the step portion is provided on the lower surface side of the horizontal fin, the resistance to the intake of air in the resin component is small, the opening area is increased, and the thin fin having no sinkhole is formed. The shape is obtained, whereby the appearance quality and the cooling performance of the engine and the like can be improved, the degree of freedom in design can be increased, and the weight of parts can be reduced.

Further, since the radiator grill of the present invention can be molded by a molding die having a simple structure as compared with the conventional one, the production of the die becomes easy and the productivity can be improved. Cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state before a radiator grill according to an embodiment of the present invention is attached to a front end of a vehicle body of an automobile.

FIG. 2 is an enlarged perspective view showing a part of the radiator grill according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a sectional view taken along line BB in FIG. 2;

FIG. 5 is a sectional view taken along line CC in FIG. 2;

FIG. 6 is a cross-sectional view illustrating a mold structure of a horizontal fin in FIG. 3;

FIG. 7 is a sectional view showing a mold structure of a vertical fin in FIG.

FIG. 8 is a cross-sectional view illustrating a mold structure of a joint between a horizontal fin and a vertical fin in FIG. 5;

FIG. 9 is an enlarged perspective view showing a part of a conventional radiator grill.

FIG. 10 is a sectional view taken along line DD in FIG. 9;

11 is a sectional view taken along line DD in FIG. 9 of another conventional example.

FIG. 12 is a sectional view taken along line EE in FIG. 9;

FIG. 13 is a cross-sectional view illustrating a mold structure of a horizontal fin in FIG.

FIG. 14 is a cross-sectional view showing a mold structure of a horizontal fin in FIG.

FIG. 15 is a sectional view showing a mold structure of a vertical fin in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Radiator grille 6 Frame 7 Horizontal fin 7a Tip of horizontal fin 7b Root of horizontal fin 8 Vertical fin 8a Tip of vertical fin 8b Root of vertical fin 8c Middle part of vertical fin 9 Step 10 Joint 11 Department

Claims (3)

[Claims] 1. A radiator grill for a vehicle, which is formed in a lattice shape by a horizontal fin and a vertical fin, wherein a tip portion of the horizontal fin is formed to be thick and a root portion is formed to be thin, and the horizontal fin is formed. A radiator grill for a vehicle, wherein a step portion is provided on the lower surface side of the vehicle. 2. A base portion of the vertical fin is formed to be thick.
2. The radiator grill for a vehicle according to claim 1, wherein the fin is formed so as to be gradually thinner toward the tip of the vertical fin, and a step is provided at the tip of the vertical fin. 3. The radiator grill for a vehicle according to claim 1, wherein a connecting portion between the horizontal fin and the vertical fin is formed to be thinner than an intermediate portion of the vertical fin.