JP2000350277A - Speaker cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To machine a speaker cabinet that reduces a standing wave with a simple method at a low cost by producing the speaker cabinet through joint of a plurality of round rod materials whose cross section is round such as a circle or an ellipse and maching the jointed rod materials to a curved face structure. SOLUTION: Some of curved shape of a corrugated board or a wooden plate or the like that can easily be processed are cut out and they are arranged to form a manufacturing die. Round rod materials 1 are placed along a curved part of the manufacturing die, adhered with an adhesive or the like to produce a shell 2 of a curved face structure. In this case, in order to avoid the round rod material 1 from being collapsed, a retainer plate is used to press the round rod material 1 from their upper parts. A speaker baffle part 3, a ceiling part 4, and a bottom plate 5 are fitted to the shell 2 of the curved face structure with an adhesive or the like to produce a speaker cabinet. Since round raggedness is present in the inside of the speaker cabinet and the curved face structure is adopted for the speaker cabinet, a standing wave in the speaker cabinet is reduced, the variation in a frequency characteristics and a transient characteristics of the speaker is reduced, the sound quality is enhanced and reproduced sound is close to the original sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker cabinet formed by joining a plurality of round bars having a round cross-section such as a circle or an ellipse and processing them into a curved structure.

[0002]

2. Description of the Related Art Speaker cabinets are often made of wood because they have a moderate internal loss, sound well, and are easy to process and obtain. In addition, in order to process a plate-like object, a rectangular parallelepiped as shown in FIG. 4 is generally used. However, this shape had three parallel planes inside, front, rear, up, down, left and right, and was the shape in which standing waves were most easily generated. Standing waves are known to disturb the frequency characteristics and transient characteristics of a speaker and adversely affect sound quality. Therefore, the characteristics were not so good. To reduce this standing wave, it is necessary to reduce the number of parallel planes. In order to reduce the number of parallel surfaces, there have been methods of bending the plate as shown in FIG. 5 and cutting the top plate and the bottom plate into trapezoidal shapes as shown in FIG. 6, but the processing is difficult and the price is high. Had become something.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a speaker cabinet for reducing standing waves that can be processed by a simple method and that can be manufactured at low cost in order to eliminate the drawbacks.

[0004]

Means for Solving the Problems (a) In order to reduce standing waves, a structure is adopted in which the walls inside the speaker cabinet have irregularities. (B) In order to reduce standing waves, the speaker cabinet has a curved structure. (C) By utilizing the fact that the points of contact between circles are in contact at any angle at a point and using a round bar, a curved surface structure can be easily created. (D) In order to make it inexpensive, instead of using an expensive material like a single plate, use a cheap bar that can be obtained from thin trees or thinned wood. In view of the above, a speaker cabinet made by joining a plurality of round bars having a round shape such as a circle or an ellipse and processing them into a curved surface structure was considered.

[0005]

According to the present invention, the standing wave of the speaker cabinet is reduced, the disturbance of the frequency characteristics and the transient characteristics of the speaker is reduced, the sound quality is improved, and the reproduction of the original sound is approximated. Processing was easy and the price was low.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cardboard, a wooden board or the like, which is easy to process, is cut into a curved shape, and several of these are arranged to form a production mold (7). A round bar (1) is placed along the curved part of the production mold (7) as shown in FIG.
A body part (2) having a curved structure shown in FIG. 3 is created. in this case,
It is better to press from above with the presser plate (8) because the round bar material may collapse. As shown in FIG. 3, a speaker baffle part (3), a top plate part (4), and a bottom plate part (5) are attached to a curved body part (2) with an adhesive or the like to form the speaker cabinet of the present invention of FIG. . It should be noted that round bars having different diameters may be created. Further, the body and the speaker baffle may be integrally formed of a round bar.

[0007]

(A) Since round irregularities are inside the cabinet and have a curved surface structure, standing waves of the speaker cabinet are reduced, and disturbances in the frequency characteristics and transient characteristics of the speakers are reduced, and the sound quality is improved. , Closer to the original sound reproduction. (B) Creating a curved structure was as simple as placing a round bar on a mold and joining it. (C) Since bar materials are used as the material, thinning materials and thin trees can be used, making them environmentally friendly. In addition, the material cost was low, and it could be produced at low cost. (D) By changing the shape of the production type, various types of speaker cabinets can be easily created. (E) When made of round rods of different diameters, the resonance points of the sound between the rods are different, which has the effect of canceling the resonance and reducing unnecessary vibration of the speaker cabinet. (F) Since the appearance is a curved surface structure, disturbance in characteristics due to the refraction effect of the speaker is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a speaker cabinet of the present invention.

FIG. 2 is a perspective view of an embodiment in which a curved surface structure is made of a round bar material.

FIG. 3 is a perspective view of a speaker cabinet assembly embodiment of the present invention.

FIG. 4 is a perspective view of a conventional rectangular speaker cabinet.

FIG. 5 is a perspective view of a conventional speaker cabinet obtained by bending a body part plate.

FIG. 6 is a perspective view of a conventional speaker cabinet in which a top plate and a bottom plate are trapezoidal.

[Explanation of symbols]

 (1) is a round bar (2) is a body (3) is a speaker baffle (4) is a top plate (5) is a bottom plate (6) is a speaker (7) is a production type (8) is a holding plate

Claims (2)

[Claims] 1. A speaker cabinet formed by joining a plurality of round bars each having a rounded cross section such as a circle or an ellipse. 2. A speaker cabinet produced by processing the curved surface structure of claim 1.