JP2808878B2 - Speaker system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loudspeaker system for reproducing music, voice and the like with high fidelity.

2. Description of the Related Art In recent years, for the purpose of improving the fidelity of reproduced sound of a speaker system, attention has been paid to the level of unnecessary radiation sound radiated from each member constituting the speaker system other than the diaphragm of the speaker unit.

As shown in FIG. 2, a groove 4 is provided between the speaker unit mounting portions (two places in the example of FIG. 2) of the front plate 1 of the cabinet, as shown in FIG. In order to secure the mechanical strength, there is a method in which a reinforcing bar 7 is bonded and fixed to the inner wall, and the groove 4 is filled with a damping material 3 made of rubber or the like having a high damping property.

In such a conventional method, in order to enhance the effect of reducing the level of unnecessary radiated sound, the depth of the groove 4 needs to be 1/2 or more of the thickness of the front plate 1, Since the mechanical strength of the front plate 1 is greatly reduced, the loss rate increases and the workability deteriorates in cabinet assembling work and the like. Therefore, the mechanical strength of the front plate 1 is improved by the reinforcing bar 7, but the loss rate and workability cannot be improved in the front plate manufacturing process, which is the preceding step.

In addition, the provision of the reinforcing bar 7 naturally increases the cost of materials and labor.

Next, the operation of filling the groove 4 with the vibration damping material 3 is difficult because the depth of the groove 4 is deep as described above, which has been a major factor impeding productivity.

The present invention has been made in view of the above-described conventional problems, and has as its object to provide a speaker system capable of effectively reducing the level of unnecessary radiation sound with a simple configuration.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, a speaker system of the present invention is provided with a speaker unit, and a front plate made of a first material is symmetrically positioned on both front and back surfaces with an equal depth. A plurality of grooves are provided, and a cabinet formed by bonding or joining a damping material made of a second material to a part or all of the grooves is used.

Operation With the configuration described above, while suppressing the vibration propagating from the speaker unit to the front plate, the vibration area is reduced,
As a result, the level of the unnecessary radiation sound can be reduced.

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

The damping material 13 is adhered from the left end of the back surface of the groove 14 to the left side surface, the front surface, the right side surface, and the right end of the back surface, so that vibration is supplied.

By doing so, the vibration of the speaker unit including the tweeter 15 and the woofer 16 is less likely to be transmitted to the front plate and become unnecessary radiation sound, and the sound quality of the speaker system can be further improved.

Moreover, since the groove 14 is formed around the cabinet at the same depth except for a part of the back surface, unnecessary radiation noise can be effectively reduced even if the depth of the groove is shallow, so that the vibration damping material 13 The productivity of the bonding operation can be greatly improved.

In addition, by making the groove 4 shallow, a decrease in the mechanical strength of the front plate 11 can be suppressed, so that a reinforcing bar can be eliminated, and significant cost reduction can be realized.

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

Furthermore, since the depth of the groove can be reduced,
This greatly improves the productivity of the vibration damping material bonding operation, and enables mass production.

In addition, since the decrease in mechanical strength of the front plate can be reduced as compared with the conventional case, it is also possible to omit the reinforcing bar. Therefore, not only can the performance be improved, but also the cost can be greatly reduced, and a large number of inexpensive products can be provided.

[Brief description of the drawings]

FIG. 1 (a) is a front view of a speaker system according to an embodiment of the present invention, FIG. 1 (b) is a sectional view taken along the line 1A-1B of FIG. 1 (a),
1 (c) is a longitudinal sectional view of a main part of FIG. 1 (a), FIG. 2 (a) is a front view of a conventional speaker system, and FIG. 2 (b) is a view of FIG. 2 (a). 1A-1B sectional view, FIG. 2 (c) is a longitudinal sectional view of FIG. 2 (a). 1 ... cabinet front plate, 2 ... cabinet body plate, 3
... damping material, 4 ... groove, 5 ... tweeter, 6 ... woofer.

Claims (1)

(57) [Claims] 1. A front panel made of a first material is provided with a plurality of grooves having the same depth at symmetric positions on both front and back surfaces of the front plate, and a part of or all of the grooves is formed of a second material. A speaker system using a cabinet formed by bonding or joining a vibration damping material made of: