JPH0575019U - Front grill - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a front grill which has a simple structure and is capable of significantly reducing the wind noise of the cooling air passing through while the vehicle is traveling without increasing the cost. To do. [Configuration] The front grille 10 of the present invention is a front part 1 of a vehicle body.
A plurality of fins 1 provided in the cooling air intake 9 that is open to the
1 and 12 are arranged vertically and horizontally, and these vertical and horizontal fins 1
The cross-sectional shapes of the rear portions 11b and 12b of the rear tires 1 and 12 are formed in a parabolic shape extending rearward of the vehicle body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a front grill of an automobile.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, a cooling air intake is opened in the front part of a vehicle body, and a front grill (radiator grill) 51 as shown in FIG. 5 is attached to the cooling air intake with a hooking piece 51a. Has been. The front grill 51 is configured by arranging vertical fins 52 and horizontal fins 53 at intervals in the vertical and horizontal directions, and portions facing the cooling air intake are formed in a lattice shape. When the vehicle is running, however, the cooling air is sent from the front of the vehicle body through the front grill 51 to the radiator (not shown) in the engine room as shown by the arrow.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional front grill 51, since the end faces of the rear portions 52a, 53a of the vertical fins 52 and the horizontal fins 53 are formed in a flat surface shape as they are cut, the cooling air is cooled by the front grille. The air flowing along the surfaces of the vertical and horizontal fins 52, 53 when passing through 51 becomes a vortex as shown by the arrow in FIG. 6, and this vortex flow is rapidly separated from the surface at the rear portion 53a of the horizontal fin 53, for example. As a result, there is a problem that an unpleasant high-pitched wind noise is generated during high-speed traveling.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce the wind noise of the cooling air passing through while the vehicle is running with a simple structure without increasing the cost. It is to provide a possible front grill.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems of the prior art, in the present invention, in a front grill provided at a cooling air inlet opening at a front part of a vehicle body and having a plurality of fins arranged vertically and horizontally, the rear portion of the vertical and horizontal fins The cross-section is shaped like a parabola extending rearward of the vehicle body.

[0006]

[Work]

 In the front grill according to the present invention, the rear cross-sectional shape of the fins arranged vertically and horizontally is formed in a parabolic shape extending toward the rear of the vehicle body. It smoothly flows along the rear surface of the fin, and the vortex of air does not suddenly separate from the surface at the rear of the fin.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

1 to 4 show an embodiment of a front grill according to the present invention. In the figure, 1 is the front part of the vehicle body, 2 is the front bumper mounted on the front side of the front part 1 of the vehicle, 3 is the engine room provided in the front part 1 of the vehicle, A front hood 4 for opening and closing is attached rotatably around the rear side. Inside the engine room 3, a radiator 5, a radiator fan 7 covered with a fan shroud 6 and an engine 8 are arranged in front of and behind the vehicle body.

At the central portion of the vehicle body front portion 1 in the width direction, between the front bumper 2 and the front hood 4, there is a front oblong cooling air intake 9 opening in the vehicle width direction. It is provided corresponding to the front position of. The cooling air intake 9 is provided with a front grill 10 serving as a decorative enclosure member, and the front grill 10 improves the appearance.

The front grill 10 is configured by arranging a plurality of vertical fins 11 and horizontal fins 12 formed of a plate-shaped body at intervals in the vertical and horizontal directions. The fins 12 are formed in a lattice shape so as to face the cooling air intake 9. Therefore, the engine room 3 and the outside communicate with each other through the front grille 10, and the cooling air is sent into the engine room 3 from the front of the vehicle body through the front grille 10 while the vehicle is traveling.

Further, the vertical fins 11 and the horizontal fins 12 of the front grille 10 have a large plate thickness at an intermediate position near the rear of the vehicle body (on the side of the engine room 3), and accordingly, when the front fins 11a, 11b, 12a, 12b are headed, It is formed continuously so as to be thin. Among these, the rear portions 11b and 12b of the vertical fins and the horizontal fins 12 are formed in a parabolic shape whose cross section extends rearward of the vehicle body. That is, the tip portions located at the rear portions 11b and 12b of the vertical fins 11 and the horizontal fins 12 are formed in a triangular shape in cross section with the corner portions curved in an arc shape.

In the present embodiment, when the vehicle travels at high speed, the cooling air passes from the front of the vehicle body through the front grille 10 as shown in FIG. 2, and passes through the radiator 5 and the radiator fan 6 in the engine room 3 and the engine. It is sent to the rear of room 3 and used for cooling various components. Therefore, when the cooling air passes through the front grille 10, the air flowing on the surfaces of the vertical fins 11 and the horizontal fins 12 becomes a vortex as shown by the arrow in FIG. On the other hand, the rear portions 11b and 12b of the vertical fins 11 and the horizontal fins 12 are formed in a smooth parabolic shape without a sudden change in the cross-sectional shape that causes the air vortex to peel off from the fin surface. Therefore, the phenomenon that air vortices generated on the surfaces of the vertical fins 11 and the horizontal fins 12 are suddenly peeled off from the fin surfaces at the rear portions 11b and 12b of the vertical and horizontal fins 11 and 12 is reduced, and at the rear portions 11b and 12b. The air flow becomes smooth.

According to the front grille 10 of the present embodiment, the cooling air passing through while the vehicle is traveling smoothly flows through the rear portions 11b, 12b of the vertical fins 11 and the horizontal fins 12, so that the vortex of air causes the fin rear portion 11b, At 12b, it does not suddenly peel off from the surface, and it is possible to suppress the generation of high-pitched wind noise due to this. Moreover, the shapes of the vertical fins 11 and the horizontal fins 12 as described above can be dealt with by simply modifying the molding die, and the die cost does not increase.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made based on the technical idea of the present invention. It

[0015]

[Effect of the device]

 As described above, the front grill according to the present invention is provided at the cooling air intake opening opened in the front part of the vehicle body, and is constituted by arranging a plurality of vertical fins and horizontal fins in the vertical and horizontal directions, and these Since the rear cross-sectional shape of the vertical and horizontal fins is formed in a parabolic shape extending toward the rear of the vehicle body, the cooling air passing through while the vehicle is traveling at high speed smoothly flows through the rear parts of the vertical and horizontal fins and is generated on the fin surface. The air vortex does not suddenly separate from the surface at the rear of the vertical and horizontal fins, and the unpleasant high-pitched wind noise caused by this can be made extremely small. Further, since the vertical and horizontal fins of the front grill according to the present invention can be easily formed by a simple modification of the mold, the cost is not increased and it is economically advantageous.

[Brief description of drawings]

FIG. 1 is a perspective view showing a front portion of an automobile equipped with a front grille according to an embodiment of the present invention.

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

FIG. 3 is an enlarged perspective view showing a front grill viewed from a direction of an arrow B in FIG.

FIG. 4 is an enlarged sectional view showing vertical and horizontal fins of the front grill.

FIG. 5 is a perspective view of a conventional front grill viewed from the rear of the vehicle body.

6 is a cross-sectional view taken along the line CC in FIG.

[Explanation of symbols]

 1 Body Front 9 Cooling Air Intake 10 Front Grill 11 Vertical Fins 12 Horizontal Fins

Claims (1)

[Scope of utility model registration request] 1. A front grill, which is provided at a cooling air intake opening opening in a front part of a vehicle body and has a plurality of fins arranged in a vertical and horizontal direction, wherein a rear cross-sectional shape of the vertical and horizontal fins is a parabola extending rearward of the vehicle body. A front grill characterized by being formed.