JPH04142898A - Speaker system - Google Patents

Abstract

PURPOSE:To reduce the level of undesired radiant sound effectively with simple configuration by adhering or bonding a damping member made of a 2nd type of material to part or all of a slot provided to both sides of a front plate made of a 1st type of material. CONSTITUTION:The surrounding of a front plate 11 of a cabinet is adhered to a barrel plate 2 and plural slots 14 of the same depth and a 1st type of material are provided to both sides symmetrically. Then a damping member 13 made of a 2nd type of material is adhered or bonded to part or all of the slots 14. Thus, even when the vibration of the speaker unit comprising a tweeter 15 and a woofer 16 is propagated to the front plate 11, undesired radiant sound is less caused and the sound quality of the speaker system is made excellent.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a speaker system for reproducing music, sounds, etc. with high fidelity.

Conventional Technology In recent years, with the aim of improving the fidelity of sound reproduced by a speaker system, attention has begun to be paid to the level of unnecessary radial sound emitted from each component of the speaker system other than the diaphragm of the speaker unit. .

As shown in Fig. 2, as a method to reduce the level of this unnecessary radiated sound, grooves 4 are provided between the parts (two places in the example shown in Fig. 2) for mounting the speaker unit on the front panel 1 of the cabinet. There is a method in which a reinforcing crosspiece 7 is adhesively fixed to the inner wall of the plate 1 to ensure its mechanical strength, and the groove 4 is filled with a damping material 3 made of rubber or the like having high damping properties.

Problems to be Solved by the Invention In such a conventional method, in order to increase the effect of reducing the level of unnecessary radial sound, the depth of the groove 4 must be equal to or greater than the thickness A of the front plate 1. As the mechanical strength of the plate 1 decreases significantly, the support ratio increases and workability deteriorates in cabinet assembly work and the like. Therefore, although the mechanical strength of the front plate 1 is improved by the reinforcing crosspiece 7, it is not possible to improve the support ratio 1 workability in the front plate manufacturing process, which is a previous process.

However, as a matter of course, providing the reinforcing beam 7 also increases the cost of materials and labor.

Next, the task of filling the grooves 4 with the restraining material 3 is difficult because the depth of the grooves 4 is deep as described above, and this has been a major factor hindering productivity.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to provide a speaker system that can effectively reduce the level of unnecessary radiated sound with a simple configuration.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the speaker system of the present invention has a speaker unit attached to the front plate and a front plate made of a first material having a depth of 100 mm at symmetrical positions on both sides of the front plate. The present invention is characterized in that a cabinet is used in which a plurality of equivalent grooves are provided and a distribution material made of a second material is adhered or bonded to some or all of the grooves.

Effect: With the above configuration, it is possible to suppress vibrations propagating from the speaker unit to the front plate, reduce the vibration area, and, as a result, reduce the level of unnecessary radiated sound.

Embodiment A speaker system according to an embodiment of the present invention will be described below with reference to FIG. In FIG. 1, a front panel 11 of the cabinet is joined to a body panel 12 at its periphery. An opening is provided in the front plate 11, and a tweeter 15 and a woofer 16 are attached to this opening. A groove 14 is provided throughout the front plate 11 at a position between the tweeter 15 and the woofer 16, including both the front and back surfaces and both sides.

A damping material 1'':3 is bonded from the left end of the back surface of the groove 14 to the left side surface 9, the right side surface, and the right end of the back surface, so that vibrations are absorbed.

In this way, the vibration of the speaker unit consisting of the tweeter 15 and the woofer 16 is less likely to be transmitted to the front plate and become unnecessary/emitted sound, and the sound quality of the speaker system can be improved. Moreover, since the grooves 14 are formed around the cabinet with the same depth except for a part of the back surface, unnecessary horizontal sound can be effectively reduced even if the depth of the grooves is shallow. The productivity of bonding work can be greatly improved.

Further, by making the grooves 4 shallower, it is possible to suppress a decrease in the mechanical strength of the front plate 11, so that reinforcing bars can be omitted, resulting in a significant cost reduction.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the level of unnecessary radiated sound due to vibrations transmitted from the speaker unit to the front plate can be effectively reduced, and the sound quality of the speaker system can be improved. It can be done.

Furthermore, since the depth of the groove can be made shallow, the productivity of the work of adhering vibration damping materials is greatly improved, and mass production becomes possible.

Furthermore, since the mechanical strength of the AiJ board can be reduced less than in the past, it is also possible to eliminate the reinforcing bars. Therefore, it is possible to realize not only an improvement in performance but also a significant reduction in cost, and it is possible to provide a large quantity of inexpensive products.

[Brief explanation of the drawing]

The diagram (2L) is a front view of the speaker system of one embodiment of the present invention, and FIG. 1(b) is a diagram 1A-1B of FIG. 1(a).
A sectional view, FIG. 1(0) is a vertical sectional view of the main part of FIG. 1e),
Figure 2(a) is a front view of a conventional speaker system;
Figure (b) is a cross-sectional view of 1 person-1B in Figure 2 (a), and Figure 2 (
c) is a longitudinal sectional view of FIG. 2(a). 1... Cabinet front plate, 2... Cabinet body board, 3... Damping material, 4... Groove,
5...Tweeter, 6...wooha. Agent's name: Patent attorney Akira Okaji and two others Jinyo is 1 ≦ Kasuri'Ll 'L1 95vA V1 buried +1-+1-Σ'! 5≧O stomach N 9 sq ni ki 5 J- Han tithe bowl 1 te tithe 2 d 0 NcI, 1 ka sun zui ( ■

Claims (1)

[Claims] A speaker unit is attached, a plurality of grooves of equal depth are provided at symmetrical positions on both the front and back surfaces of a front plate made of a first material, and a damping material made of a second material is applied to some or all of the grooves. A speaker system characterized by using a cabinet made by gluing or joining.