JPH0595592A - Speaker unit - Google Patents

Abstract

PURPOSE:To obtain the speaker unit having the high degree of design concerning the longitudinally long form and satisfactory acoustic performance. CONSTITUTION:A cylindrical lower cabinet 6 forming a buffer part 6b at a longitudinally passed relay 6a and the upper part of the lower cabinet fitting the relay to the longitudinally passed space of the cylindrical body are pressurized and fitted into a link part 5b of an upper cabinet 5 mounting a speaker 3. The lower cabinet 6 reduces limit concerning the longitudinally long from and has the characteristic to be shrunk to the inside. Therefore, the forming limit is reduced, a strong and secure coupling operation can be easily obtained mutually between the upper and lower cabinets 5 and 6, and the longitudinally long form with the satisfactory acoustic characteristics can be realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device having a vertically long cabinet.

[0002]

2. Description of the Related Art FIG. 4 is a diagram showing a conventional speaker device. In the figure, 1 is a vertically elongated cabinet,
A front plate 1a formed by combining plate materials into a U-shaped cross section,
The front plate 1a is composed of a recess 1b provided near the upper end of the vertical surface, and a back plate 1c fastened to the back of the front plate 1a. 2 is a pedestal fastened to the bottom of the cabinet 1, 3 is a speaker mounted in the recess 1b, and 4 is a protective net provided to cover the speaker 3.

The conventional speaker device is constructed as described above, and a vertically long cabinet 1 is manufactured by processing a wooden board such as plywood.

[0004]

In the conventional speaker device as described above, since the cabinet 1 is made of a plate material, the degree of freedom in modeling is restricted by the standard length of the material, and the cabinet 1 is particularly tall. Was difficult to make. In addition, since the back plate 1c is joined to the front plate 1a with a wide surface, acoustic performance problems such as air leakage and chattering occur, and since a plate material is used, the acoustic performance is balanced from the plate thickness. When the necessary internal volume is secured, there is a problem in that the thinning and downsizing of the molding are restricted.

The present invention has been made in order to solve the above problems, and has a high degree of freedom in terms of molding properties,
Moreover, it is an object of the present invention to obtain a speaker device that can obtain good acoustic performance.

[0006]

In a speaker device according to the present invention, an upper cabinet provided with a speaker and a buffer portion are formed at a joint which is vertically inserted into a connecting portion of the upper cabinet. A tubular lower cabinet is provided.

Further, the lower cabinet is formed by extruding a synthetic resin material, and a joint having a V-shaped cross section is adhered to the groove-shaped void formed in the outer periphery.

[0008]

The upper cabinet of the speaker device constructed as described above can be designed in an appropriate shape without deteriorating the acoustic performance, and the lower cabinet can be easily molded by extrusion molding and can be shaped. Can be manufactured with a high degree of freedom. Further, the buffer portion absorbs a change in the cross-sectional dimension at the time of fitting.

Further, the lower cabinet, which has been extruded and has the groove-shaped voids removed, surely fits into the upper cabinet due to the characteristic that it contracts inward due to residual stress.

[0010]

EXAMPLES Example 1. 1 and 2 are views showing an embodiment of the present invention, in which the same reference numerals as those in FIG. 4 denote corresponding parts, and 5 denotes an upper cabinet having a box shape, and a speaker 3
Is provided with a concave portion 5a in which is mounted and a connecting portion 5b formed of a small diameter portion formed on the lower surface. Reference numeral 6 denotes a lower cabinet having a cylindrical body having a vertically extending seam 6a and having a buffer portion 6b formed by filling the seam 6a with a viscoelastic material. The upper end portion is press-fitted into the connecting portion 5b and fitted therein. .. Then, the lower cabinet 6 is formed by extrusion molding a synthetic resin material, and the buffer portion 6b is also formed linearly at the time of molding. The buffer portion 6b is made of a soft resin and is an elastomeric material, for example, a vinyl chloride-based material, an olefin-based material, or a high-grade material such as a urethane-based material or a silicon-based material can be used. It is melted and forced out of the die, and then forcedly shaped by a sizing die.

In the speaker device configured as described above, the upper end of the lower cabinet 6 is press-fitted into the connecting portion 5b of the upper cabinet 5 to be integrated. At this time, since the buffer portion 6b expands and contracts in accordance with the manufacturing error of the connecting portion 5b and the like, a strong and reliable coupling action can be obtained. And
It is possible to obtain a speaker device having a high degree of freedom in designing and having good acoustic characteristics. A variety of products can be easily obtained by connecting a plurality of cabinets, and products of different heights can be obtained by changing the height of the lower cabinet 6. Further, by using a cabinet made of synthetic resin, it becomes possible to easily cope with diversification of decorativeness. Furthermore, since the upper and lower cabinets 5 and 6 are joined by press-fitting, the degree of sealing in acoustic performance is improved, and problems such as chattering can be eliminated.

The progress of audio and visual related products is remarkable, in order to obtain a sense of scale and presence.
The screen is enlarged and the image quality is improved. In addition, a speaker will be developed that has a method and form for acoustically reproducing heavy bass and providing a realistic sensation. As such a speaker, a vertically long form is required for reproduction of heavy bass and space saving, and in combination with a large-screen television receiver, video projector, etc., and in order to effectively use the living space, the aspect ratio is increased. A vertically long speaker device that exceeds 3 to 4 times has been required.

Embodiment 2. FIG. 3 is a view showing another embodiment of the present invention, in which the same reference numerals as those in FIGS. 1 and 2 indicate corresponding parts, and 6a is formed by extruding the lower cabinet 6 and then removing the outer periphery by cutting. A groove-shaped space arranged vertically, 7 is a joint made of a strip and having an E-shaped cross section,
The edge portions of the groove-shaped spaces 6a are inserted into the groove-shaped spaces 6a and are fitted in the recesses on both sides of the V-shape, respectively, and are bonded by an adhesive. The configuration is the same as that of FIG. 1 except for FIG.

In the speaker device constructed as described above, the lower cabinet 6 is securely fitted to the connecting portion 5b of the upper cabinet 5 due to the characteristic that it contracts inward due to residual stress. Therefore, although detailed description is omitted, it is obvious that the embodiment of FIG. 3 can also obtain the same operation as the embodiment of FIGS.

[0015]

As described above, according to the present invention, a tubular lower cabinet in which a buffer portion is provided at a longitudinal joint in a connecting portion of an upper cabinet in which a speaker is mounted, and a longitudinal body of a tubular body are provided. The upper part of the lower cabinet, in which the joint is fitted in the void, is press-fitted. As a result, the degree of freedom in designing is high, and a strong and reliable coupling action between the upper and lower cabinets can be obtained, which has the effect of realizing a vertically long form with good acoustic characteristics.

[Brief description of drawings]

FIG. 1 is a front view A, an exploded side sectional view B and a rear view C showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along line DD of FIG. 1C.

FIG. 3 is a view corresponding to FIG. 2 showing another embodiment of the present invention.

FIG. 4 is a front view A showing a conventional speaker device and a side sectional view B showing an exploded view thereof.

[Explanation of symbols]

 3 speaker 5 upper cabinet 5b connecting part 6 lower cabinet 6a seam 6b buffer part 7 joint

Claims (2)

[Claims] 1. An upper cabinet having a speaker provided on an upright surface and a connecting portion provided at a lower end thereof, and a tube having a joint which is disposed below the upper cabinet and which is fitted to the connecting portion and has a vertically extending seam. A speaker device comprising: a lower cabinet having a cushioning part formed of a body and filled with a viscoelastic material at the joint. 2. An upper cabinet having a speaker provided on an upright surface and a connecting portion provided at a lower end portion, and a cylinder provided with a groove-shaped cavity through which a synthetic resin material is extruded and the outer periphery thereof is deleted to extend vertically. A body, and a joint which is arranged in the groove-shaped space and has an E-shaped cross section, and the edges of the groove-shaped space are fitted in the recesses on both sides of the E-shape, respectively, and the joints are bonded by an adhesive. A speaker device, comprising: a lower cabinet arranged below the upper cabinet and fitted to the connecting portion.