JPS63290494A - Speaker box - Google Patents

Abstract

PURPOSE:To prevent variation in an acoustic characteristic and air-leakage caused by a misworking and misadhesion of a partition plate, to stabilize the quality, and to improve the productivity by constituting the partition plate and the inner walls of a speaker box with foaming, styrene and covering the box with a wooden box. CONSTITUTION:On the top end of the partition plate 7 in which an acoustic conduction pipe is made with foaming, styrene, a projecting part 8 is provided. This projecting part 8 is inserted in a groove 9 formed in a planar plate 10 made with foaming styrene. The partition plate 7 and the planar plate 10 are inserted in the wooden box 11 having a hole 13 for the mounting of the speaker and a hole 4 for the radiation of sound from the rear surface of the speaker to the external, then the box 11 is covered with a wooden lid 11. As a result, the productivity of the speaker box is improved, air-leakage is eliminated, and the quality is made stable.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a speaker box that is designed to stabilize quality and improve productivity.

2. Description of the Related Art In recent years, speaker boxes have become smaller and smaller, and there has been a demand for smaller speaker boxes that can reproduce powerful bass frequencies.

A conventional speaker box will be described below with reference to the drawings.

The conventional Subinica box for bass range reproduction, as shown in FIG.

There is a method for reproducing powerful bass frequencies in a small box by providing a certain amount of sound guidance and radiating it to the outside of the box. In Fig. 7, 1 is a hole for attaching a speaker 2, and a partition plate 3t is used to conduct a constant sound BL and a sound guide C on the back of the speaker.
- a hole 4 for radiating sound d to the outside of the box; The sound radiated into the box from the back of the speaker is synthesized with the sound d radiated to the outside of the box through a certain sound guide C, and this method enables powerful low-frequency reproduction in a small box. It is possible to realize this.

Problems to be Solved by the Invention However, in such a conventional configuration, a partition plate 3 provided inside the box is provided in order to provide a constant sound guide cf for the sound channel on the back of the speaker and radiate the sound to the outside of the box, as shown in FIG. As shown in the figure, it is necessary to assemble the box by providing a groove 6 for inserting the partition plate in the outer peripheral plate 5 of the box, and inserting the partition plate 3 along the groove 6 and gluing it to prevent air leakage. However, there were problems such as extremely low productivity and high costs.

Further, there were problems such as variations in acoustic characteristics and air leakage due to mistakes in processing and adhesion of the partition plates.

The present invention solves such problems by constructing a speaker box by constructing the partition plate provided inside the box and the inner circumferential wall of the box using molded polystyrene foam, and covering the outer periphery with a wooden box. The purpose of this is to prevent variations in acoustic characteristics and air leakage due to errors in processing and adhesion of partition plates, and to provide a speaker box with stable quality and good productivity.

Means for Solving the Problem In order to solve this problem, the present invention provides a partition plate inside the box and a box for radiating the sound from the back of the speaker attached to the box to the outside of the box by providing a certain sound conduit. a first styrene foam molded body having an inner wall; a second styrene foam molded body that constitutes a lid from the first styrene foam molded body; and a box that covers the assembly of the second styrofoam molded body; The second foamed polystyrene molded body is assembled at the uneven retaining portion.

Function: With this configuration, it is possible to integrally mold the sound conduit provided by the partition plate inside the speaker box, which makes it possible to reduce the cost of the speaker box with stable quality and good productivity. .

EXAMPLE An example of the present invention will be described below with reference to the drawings. Note that the same reference numerals as those in FIGS. 6 and 7 indicate the same parts.

FIG. 1 is a perspective view of a partition plate 7 in which a sound conduit is made of a polystyrene molded product for insertion into a box according to an embodiment of the present invention, and a convex projection 8 is provided at the upper end of the partition plate 7. It is a provision. FIG. 2 is a perspective view of a flat plate 10 made of a foamed polystyrene molded product having a concave groove 9 for forming a sound conduit in combination with the partition plate 7 shown in FIG. 1.

The details of the sound guide tube for insertion into the box constructed as described above will be described below with reference to FIGS. 3 and 4.

Figure 3 shows a broken partition plate 7 made of styrofoam molded product.
FIG. 4 is a partially enlarged perspective view showing the steps for constructing the sound pipe by combining the sound pipe and the flat plate 10, and FIG. 4 is a partially enlarged view showing the completed state of the sound pipe.

As shown in FIG. 3, a convex protrusion 8 provided at the upper end of the partition plate 7, which constitutes a sound conduit using a styrofoam molded product, is
It is inserted into a concave groove 9 of a flat plate 1o made of a styrofoam molded product, and as shown in FIG. 4, the protrusion 8 and groove 9 are brought into close contact to prevent air leakage. FIG. 5 is an assembly process diagram of a speaker box, showing the process of covering the outer periphery of a sound conduit made of polystyrene foam using the above construction method with a wooden box in order to improve the strength of the box. In Figure 5, 11.12 is the hole 1 for installing the speaker.
3 and a hole 4 for radiating the sound from the back of the speaker to the outside of the box. Inside the box, a partition plate 7 and a flat plate 1o, which constitute a sound conduit made of styrofoam molded products, are inserted. The structure is such that the outer periphery is covered with a wooden box.

With this configuration, it is possible to integrally mold the sound pipe inside the speaker box, which not only improves the productivity of the box, but also provides a speaker box with stable quality without air leakage. becomes possible. Furthermore, by using styrofoam for the molded product, material costs and molding die costs can be realized at low costs, so that costs can also be reduced.

The flat plate 10 made of a foamed polystyrene molded product having concave grooves 9 used in one embodiment is a partition plate 14 having concave grooves 9, as shown in FIG.
It goes without saying that even when a sound pipe is constructed in combination with the partition plate 7 shown in the figure, the acoustic characteristics of the speaker box of the present invention are satisfied.

Effects of the Invention As described above, according to the present invention, the partition plate inside the box and the inner wall of the box for radiating the sound from the back of the speaker attached to the box to the outside of the box by providing a certain sound conduit are made of a convex shape. Consisting of a Styrofoam molded product and a concave Styrofoam molded product, the convex Styrofoam grooves are placed in the grooves of the concave Styrofoam so that the sound emitted from the back of the speaker passes through the sound conduit made of the Styrofoam molded product without air leakage. The structure into which the protrusion is inserted constitutes a sound conduit inside the box, and the outer periphery of the box is made of a wooden box with holes that radiate the sound from the speaker to the outside of the box. It has the effect of stabilizing quality, improving productivity, and reducing costs without reducing strength.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a partition plate for insertion into a box made of a polystyrene molded product according to an embodiment of the present invention, and FIG. Perspective view of a flat plate made of styrene molded products, Part 3
The figure is a partially enlarged perspective view showing the sound pipe assembly process of the present invention.
Fig. 4 is a partially enlarged view showing the completed state of the sound conduit of the invention, Fig. 6 is a perspective view showing the assembly process of the speaker box of the invention, and Fig. 6 is a second embodiment of the invention. FIG. 7 is a perspective view showing a conventional speaker box for low frequency reproduction in a partially cutaway view, and FIG. 8 is a perspective view showing a conventional speaker box manufacturing method. . 4... Hole that radiates sound to the outside of the box, 7...
...Partition plate integrally molded from Styrofoam, 8.
... Convex protrusion, 9 ... Concave groove, 19
・・・・・・Flat plate integrally molded from Styrofoam, 1
1.12...A box composed of wooden boxes, 13
...hole for speaker mounting, 14...partition plate integrally molded from polystyrene foam, C...sound conduction. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 7-4 Hiroshi Tei = z-i Engineering's prayer (Worker's prayer) Tadasu

Claims (1)

[Claims] (1) A first styrofoam molded body having a partition plate inside the box and an inner wall of the box for radiating sound from the back of a speaker attached to the box to the outside of the box by providing a certain sound conduit, and this first styrofoam molded body. The molded body is a second foamed polystyrene molded body constituting a lid, and the first molded body is
and a box covering an assembly of a second styrofoam molded body, wherein the first and second styrofoam molded bodies are assembled at a concave and convex engaging portion.