JPS6350919B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [A. Field of Industrial Application] The present invention relates to a speaker box, and particularly to a speaker box molded from synthetic resin.

[B. Conventional technology]

Conventionally, as a speaker box to which a speaker unit is attached, one constructed of wood is generally known. This is because the materials are relatively easy to obtain, processing is easy, and acoustic characteristics such as the buttful effect have been sufficiently researched, making it easy to obtain materials when designing. It is. However, in the case of such a wooden speaker box, special ingenuity is required when attaching the speaker box body to the buttful plate to which the speaker unit is attached. This is because the mounting portion between the buff-full plate and the speaker box body has a significant effect on the acoustic effect. Wooden speaker boxes have a problem in that they are not suitable for mass production because of the emphasis placed on attaching the buttful plate to the speaker box body.

Recently, in order to improve mass production, chipboard has been used as a material for making speaker boxes.
Pressboard, synthetic resin, etc. have been proposed.

When the speaker box is integrally molded from synthetic resin in this way, the bulk board and the speaker box body are integrally molded, so unlike wooden speaker boxes, there is no need for labor when assembling the box, and it is excellent in mass production.

However, when the speaker box is integrally molded from synthetic resin in this manner, there are various restrictions in terms of molding technology. For example, due to the acoustic characteristics of a speaker box, a depth of about 20 cm is required, but when such a speaker box is integrally molded from synthetic resin, it is difficult to create a speaker box that satisfies these conditions due to constraints in molding technology such as molds. The speaker box 1 had to be molded separately into a front part 2 and a rear part 3, as shown in FIG.

However, when the speaker box is constructed by dividing it in this way, the junction between the front part 2 and the rear part 3 of the speaker box 1 becomes a weak point in terms of acoustic characteristics, so the increase or decrease in the output sound pressure of the speaker There is a risk that problems such as chatter may occur. or,
During molding, the speaker box warped toward the inside, which adversely affected the acoustic characteristics.

Further, when the speaker box is integrally molded from chipboard, pressboard, etc., it is more difficult than when integrally molded from the above-mentioned synthetic resin.

[C. Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to propose a speaker box that can prevent chattering and warping inward of the speaker box and provide good acoustic characteristics.

[D Example]

2 to 7 are views showing one embodiment of the present invention, in which 10 is a speaker box body molded from synthetic resin and has an opening on one side (the rear side in the figure); 11 is a speaker box body 10; A plurality of ribs are integrally formed, 12 is a recess formed in the rib 11, 13 is a meat strip provided in the recess 12,
In order to prevent the protrusion 14 of the rib 11 from cracking, the protrusion 1
It is formed by taking R and C planes at the root of 4. Reference numeral 15 represents a mounting member that is accommodated in the recess 12 of the rib 11, and 16 represents a lid (in this case, a rear panel) that closes the opening of the speaker box body 10, and is made of wood, synthetic resin, or the like. 17 is a rib formed on the lid body 16; 18 is a convex portion formed on the rib 17, which engages with the mounting member 15 when the lid body 16 is attached to the speaker box body 10. 19 is rib 17
When attaching the lid body 16 to the speaker box body 10, the rib 11 [particularly the rib 1
1].

Next, the assembly of the speaker box having such a configuration will be explained. First, as shown in FIGS. 4 and 5, the mounting member 15 is adhesively housed in the recess 12 of the rib 11 formed integrally with the speaker box body 10. At this time, the protrusion 14 of the rib 11 is attached to the mounting member 1.
Although the box is pressed inward at 5, breakage of the protrusion 14 is prevented by providing a meat strip 13 at the base.

When the lid 16 is attached to the speaker box main body 10 in this state, the recess 19 formed in the rib 17 of the lid 16 and the rib 11 formed in the speaker box main body 10 as shown in FIGS. 6 and 7. The mounting member 15 is pressed against the inner wall of the box via the protrusion 14. At the same time, the convex portion 18 of the rib 17 and the mounting member 15 are engaged, and the mounting member 15 is pressed against the inner wall of the box. Therefore, the interior space of the speaker box is completely sealed, and there is no possibility of deterioration of acoustic characteristics due to air leakage or the like.

In this state, attach the lid 16 and the mounting member 15 with the screws 2.
Assembly of the speaker box is completed by screwing it in at point 0.

Incidentally, if the depth of the speaker box body is increased as shown in the embodiment, warping occurs during molding, but in the present invention, the occurrence of such warping is prevented by forming the rib 11 integrally with the speaker box main body 10. are doing.

[E. Effect of invention]

It is possible to prevent chattering and warping of the speaker box to the inside, and to obtain good acoustic characteristics.
Further, since it maintains the advantages of synthetic resin speaker boxes and can be easily assembled, it is suitable for mass production.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a conventional synthetic resin speaker box, Fig. 2 is a perspective view showing an embodiment of the present invention, Fig. 3 is a view showing its main parts, and Fig. 4 is an illustration of the assembly process. Fig. 5 is a rear view showing a state in which the mounting member is attached to the rib of the speaker box body;
FIG. 6 is a partially enlarged view showing a state in which the speaker box body and the lid are attached, and FIG. 7 is a diagram showing the relationship between the lid and the mounting member. 10... Speaker box body, 11... Rib, 12... Recess, 15... Mounting member, 16...
Lid body, 18... Convex portion, 19... Concave portion.

Claims (1)

[Claims] 1. A speaker box body molded from synthetic resin and having an opening on one side, a plurality of ribs formed within the speaker box body, a recess formed in the rib, and a mounting that is housed in the recess. a member, a lid that closes the opening formed in the speaker box body, and a convex portion and a recess that are formed on the lid and engage with the mounting member and the rib,
After storing the mounting member in the recess of the rib formed inside the speaker box main body, the lid is closed by engaging the convex portion and the recess of the lid body with the mounting member and the rib of the speaker box main body. 1. A speaker box, characterized in that the opening of the speaker box body is closed with a body, thereby forming a speaker box.