JPS6341245Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radiator grill for an automobile. 2. Description of the Related Art Generally, a radiator grille is provided at the front end of an automobile body to take in cooling air from a radiator.

Recently, many radiator grills have been installed, which are molded from synthetic resin and have a large number of hole shapes formed by a large number of grids.

This synthetic resin radiator grille (hereinafter simply referred to as grille) is molded by injection molding. Efforts have been made to prevent indentations from pins, etc.

For example, as shown in FIG. 5, the stationary mold 4 is provided with an engraved portion forming the element lattice 2 at the mating surface of the mold, the so-called parting surface P, as a boundary, and the movable mold 5 is A carved part forming the back side rib 3 is provided, and the back side rib 3 is integrally molded on the back side of the element lattice 2.

With this configuration, the movable mold 5 is moved backward to open the mating surface P of both molds 4 and 5, and
The grill molded product is held in the movable mold 5 by the back rib 3 and taken out from the fixed mold 4.

Therefore, on the back side that forms the grill design surface,
A beautiful finished surface without any impressions caused by the extrusion pins or the like can be obtained.

When the back side rib 3 of this grill is released from the mold,
In order to apply even force to the entire grill molding,
Across a large number of elemental lattices 2 that are chained together,
They are formed in an almost identical grid shape to prevent deformation of the grill molded product.

By the way, recently, due to the design requirements of automobiles,
The hole shape of the grille tends to become extremely small, but when the hole shape of the grille is made smaller, air flow at the step formed at the connection between the bare lattice and the back side ribs while the car is running at high speed. This causes inconveniences such as the wind noise being disturbed and making beeping or whining noises.

The present invention has been made to solve the above-mentioned conventional disadvantages, and an object of the present invention is to provide a radiator grill for an automobile that does not generate wind noise during high-speed driving.

According to the present invention, in the radiator grill of an automobile as described above, the back side rib has a rough lattice-like outline that can surround a plurality of the grids of the radiator grill, and is arranged regularly. This is achieved by aligning them and integrally molding them on the back surface of the radiator grill.

According to such a configuration, when the automobile is driven at high speed, wind noise generated from around the radiator grill can be reduced, and the quietness inside the vehicle interior can be improved while the vehicle is traveling at high speed.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view partially showing the front end of an automobile body, FIG. 2 is a rear view partially showing an embodiment of the radiator grill for an automobile according to the present invention, and FIG.
The figure is an enlarged sectional view of the part corresponding to the - line in Figure 2,
FIG. 4 is an enlarged sectional view of a portion corresponding to the - line in FIG. 2, and FIG. 5 is an explanatory diagram of forming the radiator grill.

In the figure, reference numeral 1 indicates the main body of a radiator grill (hereinafter simply referred to as grill) made of synthetic resin. These are integrally injection molded.

The back side rib 3 is integrally formed with the element lattice 2 on the back surface of the grill body 1 so that the diamond-shaped outer contours surrounding the four element lattices 2 are regularly arranged in a lattice shape.

Note that the hole shape formed by the elementary lattice 2 may be round, such as a circle or an ellipse, or polygonal, such as a quadrangle or a hexagon.

According to this embodiment, the width of each space surrounded by the back side ribs 3 in a lattice shape is equal to 4
Since the magnification is doubled, there is an advantage that turbulence in the air flow that causes wind noise is less likely to occur at the stepped portion formed at the continuous connection between the plain lattice 2 and the back rib 3. be.

[Brief explanation of the drawing]

FIG. 1 is a perspective view partially showing the front end of an automobile body, FIG. 2 is a rear view partially showing an embodiment of the radiator grill for an automobile according to the present invention, and FIG.
The figure is an enlarged sectional view of the part corresponding to the - line in Figure 2,
FIG. 4 is an enlarged sectional view of a portion corresponding to the - line in FIG. 2, and FIG. 5 is an explanatory diagram of forming the radiator grill. 2... Plain lattice, 1... Grill body, 4... Fixed side mold (molding die), 5... Movable side die (molding die), 3... Back side rib.

Claims (1)

[Claims for Utility Model Registration] A grill made of synthetic resin that has a large number of hole shapes formed by a large number of element lattices connected together, which can be cut out from a mold when the grill is molded. In an automobile radiator grill in which a back side rib is integrally molded on the back side of the grille, the back side rib has a rough lattice-like outline that can surround a plurality of the element lattices, and is arranged regularly. An automobile radiator grill characterized by being aligned and integrally molded.