JPS641830Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Field of the Invention>> This invention relates to improvement of speaker boxes for automobiles.

<Prior art and its problems> As shown in FIG. Speaker hole 3a on the attached door trim 3 side
The speaker hole 3a is opened and the front side of the speaker hole 3a is covered with a speaker box 4.

The speaker box 4 includes an opening formed on a surface facing the speaker 2, and a grill portion 5 formed in the opening surface, which is formed of a saran net, a wire mesh, or a large number of holes.

However, the door configured in this manner is subject to wind pressure when opened and closed when getting on and off the vehicle, and air enters and exits the vehicle interior and exterior through this door. It will come and go.

On the other hand, when net is used as the constituent material of the grill part 5, dust accumulates on the net every time air enters and exits due to the filter effect of the net, so it becomes extremely dirty and the quality cannot be maintained over a long period of time.

In the past, as a countermeasure against dirt, wire mesh or exposed resin items were used instead of netting instead of netting, but compared to grills that use cloth netting, the appearance is considerably lower, and Even when such a grill is used, it has become unavoidable that dust still adheres to the grill.

<Purpose of the invention> The purpose of this invention is to restrict the air flow passing through the grille when the door is opened and closed, thereby preventing contamination of the grille.

<<Configuration and Effects of the Invention>> In order to achieve the above object, the present invention is characterized in that air circulation holes are formed in the peripheral edge of the speaker body.

According to the above configuration, when the door is opened and closed, air enters and exits through the air circulation holes instead of through the grille, which has a high flow resistance, so that there is no contamination due to the filter effect of the grille. Moreover, since a high-quality cloth net can be used for this purpose, the appearance of interior materials equipped with this type of speaker is improved.

<<Description of Embodiments>> FIG. 2 shows a speaker box according to this invention, and FIG. 3 shows the speaker box mounted on a door trim.

It should be noted that other than the main parts of this invention are the same as those in FIG. 1, so the same parts will be explained using the same reference numerals.

In the figure, 10 is a speaker box,
This speaker box 10 consists of a speaker box main body 11 and a grill section 12.

The main body 11 is shaped like a shallow container, and has embossments 13, 13, .

Further, a plurality of air circulation holes 15, 15, . . . are cut out and formed in the lower side of the main body 11.

The grill part 12 consists of a grill base 16 made of punched metal or the like, and a Saran net 17 attached to the surface of the grill base 16. The peripheral edge of the Saran net 17 is wrapped inside the grill base 16. Glued.

The grill base 16 has claws 18, 18 for attachment.
... is formed by cutting and raising the claw portion 18 into the grill hole 1.
By caulking the opening periphery of 4, the grill part 12
is fixed to the main body 11.

The speaker box 10 constructed as described above is placed on the periphery of the speaker hole 3a of the door trim 3, and is attached to the side surface of the door trim 3 by screwing the screw B into the embossing 13 from the back side of the door trim 3.

When closing the door configured as described above, wind pressure is applied in the side direction of the door trim 3 as indicated by arrow A in FIG. This air flow is indicated by arrow A′,
The air flows out from the opening formed on the door 1 side through the air circulation hole 15 as shown by A''.

In this case, wind pressure is also applied to the grill portion 12, but the flow resistance of the air flow holes 15 is smaller than the flow resistance of this portion.
There is little air flow through 7.

Therefore, the net 1 caused by the opening and closing of the door
No. 7 stains and can be kept clean at all times.

Next, FIG. 4 shows a second embodiment of this invention.

A cylindrical partition wall 20 is erected around the periphery of the grill hole 14 of the main body 11, and its end portion is brought into contact with the periphery flange portion of the speaker 2.

Since the space surrounded by the partition wall 20 is a closed space completely unrelated to air circulation, the dustproof effect is even higher than in the first embodiment.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the relationship between the door to which the speaker is attached and the door trim, Fig. 2 is an exploded perspective view of the speaker box according to the first embodiment of the present invention, and Fig. 3 is the installed state of the speaker box. FIG. 4 is a partial sectional view showing a second embodiment of this invention. 1...Door, 2...Speaker, 3...Door trim (interior material), 3a...Speaker hole, 10...Speaker box, 11...Speaker box body, 12...Grill portion, 15...Air circulation hole .

Claims (1)

[Scope of utility model registration request] A speaker box consisting of a speaker box body that is fixed to the periphery of a speaker hole formed in an interior material and has an opening formed on a surface facing the speaker, and a grill section that is attached to the opening. A speaker box for an automobile, characterized in that air circulation holes are formed in the periphery.