JP2002095075A - Speaker unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a speaker unit constituted by fixing a speaker 3 to a cabinet 1 in which the number of parts is decreased while simplifying the assembling process. SOLUTION: In the speaker unit, a sound path is formed in a cabinet 1 by partitioning the inner space of the cabinet wherein the sound path has one closed end and the other open end. The cabinet 1 comprises a central cabinet member 11 formed spirally by integral resin molding, and a pair of side plates bonded to spiral end faces appearing on the opposite side faces of the central cabinet member 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device constructed by mounting a speaker in a cabinet, and more particularly, to a speaker device of an acoustic tube type in which an acoustic path having one end closed and the other end opened is formed in the cabinet. Things.

[0002]

2. Description of the Related Art As shown in FIG. 4, for example, an acoustic tube type speaker device is constructed by mounting a high-frequency speaker (2) and a middle / low-frequency speaker (3) to a rectangular parallelepiped cabinet (4). The interior of the cabinet (4) is partitioned by a plurality of partition plates (47), (48) and (49) as shown in FIG. 5, thereby providing an acoustic path for guiding the sound from the middle / low-range speaker (3). Are formed.

In the example shown in the figure, a cabinet (4) is formed by a top plate (41), a back plate (42), a bottom plate (43), a front plate (44), and a pair of left and right side plates (45) and (46). A body is formed, and the inside of the box is partitioned by three partition plates (47), (48), and (49), and an acoustic path formed by this is closed at one end by an upper plate (41). At the same time, the other end is opened at an opening (40) formed below the front plate (44). The front plate (44) has a circular window (44a) for mounting the high-frequency speaker (2) and a circular window (44b) for mounting the middle / low-frequency speaker (3). .

In the above-mentioned acoustic tube type speaker device, a sound wave emitted from the middle / low sound speaker (3) resonates in an acoustic path, and a high sound pressure can be obtained.

[0005]

However, in a conventional acoustic tube type speaker device, the interior of the cabinet is partitioned by a plurality of partition plates in order to form an acoustic path as described above. However, there is a problem that the number of parts is increased and the assembling process is complicated due to a large number of plate members. In particular, in order to improve the sound effect in a small speaker device, it is necessary to finely partition the inside of the cabinet and form a long acoustic path, which further increases the number of partition plates. It gets complicated.

Therefore, an object of the present invention is to reduce the number of parts,
Another object of the present invention is to provide an acoustic tube type speaker device capable of simplifying an assembling process.

[0007]

A speaker device according to the present invention is constructed by mounting a speaker (3) on a cabinet (1), and a cabinet (1) is provided inside the cabinet (1).
An acoustic path is formed by partitioning the internal space, and one end of the acoustic path is closed and the other end is open.
Here, the cabinet (1) is provided with a partition (17) having a spiral cross section to form a spiral acoustic path, and a central cabinet member (11) integrally formed as a whole and a central cabinet member (17). A pair of side plates (12) joined to the spiral end surfaces that appeared on both sides of (11) and covering the openings on both sides
(13).

In the above-mentioned speaker device of the present invention, the upper plate, the back plate, the bottom plate, the front plate, and the plurality of partition plates of the conventional cabinet are integrally formed by the central cabinet member (11). . Therefore, by employing the cabinet structure of the present invention, the number of parts is significantly reduced as compared with the conventional cabinet structure. In order to form the acoustic path longer, the number of turns of the spiral partition (17) may be increased, and the number of parts does not increase. Further, in the assembling process of the speaker device of the present invention, the cabinet (1) can be obtained only by holding the central cabinet member (11) between the pair of left and right side plates (12) and (13).
Is completed, so that the number of steps is greatly reduced as compared with the conventional speaker device assembling process of assembling a cabinet using a large number of plate members. In addition, the central cabinet member (11)
Alternatively, any one of a pair of conventional side plates can be integrally formed.

Specifically, the central cabinet member (11)
Is formed by integral molding of resin. Thus, the central cabinet member (11) can be manufactured by a simple process.

[0010] In a specific configuration, a pair of left and right side plates is provided with a spiral groove in which the spiral end face of the central cabinet member (11) engages. As a result, the central cabinet member (11) is positioned by the groove of the side plate, and is reliably held at that position.

[0011]

According to the speaker device of the present invention, the number of parts can be reduced and the assembling process can be simplified regardless of the length of the acoustic path.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. As shown in FIG. 1, the speaker device according to the present invention has a rectangular parallelepiped cabinet.
(1) High-frequency speaker (2) and medium / low-frequency speaker (3)
The acoustic path for resonating the sound emitted from the middle / bass speaker (3) is formed in a spiral shape inside the cabinet (1) as shown in FIG. .

As shown in FIG. 3, the cabinet (1) has a pair of left and right side plates (12) (1) on both sides of the central cabinet member (11).
3) Deployed and configured. Central cabinet member (11)
Is an integrally molded product of resin, the cross-sectional shape along the acoustic path is formed in a spiral shape, and constitutes the outer wall corresponding to the top plate, back plate, bottom plate and front plate of the conventional cabinet, and is formed inside it. Constitutes a spiral partition (17) corresponding to a plurality of conventional partition plates. Circular windows (14) and (15) for installing the loudspeaker (2) and the middle and low loudspeakers (3) are provided in a portion corresponding to the front plate of the central cabinet member (11). I have.

On the other hand, spiral grooves (12a) (13a) to be engaged with spiral end faces appearing on both side surfaces of the central cabinet member (11) are formed in both side plates (12) and (13). I have. Therefore, adhesive is applied to each of the spiral end faces that appear on both side faces of the central cabinet member (11), and the grooves (12a) (13a) of the side plates (12) and (13) are engaged with these end faces, The cabinet (1) is assembled by joining and fixing both side plates (12) and (13) to the central cabinet member (11). As a result, the partition (17) of the central cabinet member (11) is
By virtue of 3), generation of vibration due to sound pressure is prevented.
Note that a high-frequency speaker (2) and a medium / low-frequency speaker (3) are attached to the center cabinet member (11) in advance.

The cabinet assembled in this manner
In (1), as shown in FIG. 2, one end of the acoustic path is closed by the upper wall of the central cabinet member (11), and the other end is opened by an opening (16) formed below the front wall. Become.

In the speaker device according to the present invention, the cabinet (1) comprises only the central cabinet member (11) and a pair of left and right side plates (12) and (13). The number of parts is greatly reduced. In addition, in order to form the acoustic path to be long, the spiral partition (1
Since the number of turns in step 7) may be increased, the number of parts does not increase. Furthermore, in the assembly process of the speaker device of the present invention, a pair of left and right side plates (12) and (13) are provided on both sides of the central cabinet member (11) obtained by integrally molding the resin.
By simply fixing the cabinet, the cabinet (1) with a spiral acoustic path formed inside is completed, which requires a large number of steps compared to the assembly process of the conventional device, which used many plates to assemble the cabinet. To be reduced.

The configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims. For example, the central cabinet member (11)
Is not limited to resin, but can also be integrally formed of a mixture of wood pieces and resin, and can be formed in a spiral shape by bending an iron plate.

[Brief description of the drawings]

FIG. 1 is a perspective view of a speaker device according to the present invention.

FIG. 2 is a sectional view of the speaker device.

FIG. 3 is an exploded perspective view of the cabinet.

FIG. 4 is a perspective view of a conventional speaker device.

FIG. 5 is a sectional view of the speaker device.

[Explanation of symbols]

 (1) Cabinet (11) Central cabinet member (12) Side plate (13) Side plate (17) Spiral partition (2) Loudspeaker (3) Loudspeaker

Claims (4)

[Claims] A speaker (3) is mounted on a cabinet (1). An acoustic path is formed inside the cabinet (1) by partitioning a space in the cabinet (1). In the speaker device, one end of which is closed and the other end of which is open, the cabinet (1) includes a partition (17) having a spiral cross section to form a spiral acoustic path, and the whole is integrally formed. At least one of the molded central cabinet member (11), which is joined to at least one of the side surfaces of the central cabinet member (11) where the spiral end surface appears, and covers the opening on the side surface. A speaker device comprising: a side plate. 2. The central cabinet member (11) has a spiral cross section along the acoustic path throughout, a spiral end surface appears on both side surfaces, and a pair of left and right side plates (2) on both end surfaces. The speaker device according to claim 1, wherein (12) and (13) are joined. 3. The speaker device according to claim 1, wherein the central cabinet member is formed by integral molding of a resin. 4. The speaker device according to claim 1, wherein the side plate is provided with a spiral groove in which a spiral end face of the central cabinet member is engaged.