JPH10322787A - Speaker cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve performance and appearance and to be applied to a high fidelity speaker by extending a reinforcing member arranged at the corner of the inner side face of a projected side face plate and a baffle front surface over the entire area of the inner side face of the projecting side face plate and eliminating a wall surface vertically extended from the front surface of a baffle. SOLUTION: The front surface of the baffle 1a to which this speaker unit 8 is attached is positioned behind a butt end 1b. A wooden reinforcing member 3 whose cross section is triangular is adhered so as to cover the entire area of the corner of the butt end 1b and the baffle 1a. In such a manner, since a butt end side face is covered over the entire area by the reinforcing meter 3 for the speaker cabinet 1, excellent frequency characteristics are obtained. That is, the fluctuation of a sound pressure level at 2,000-20,000 Hz is reduced, vibration attenuation becomes sharp since the mechanical strength of the cabinet 1 is increased and unrequited components in acoustic radiation are reduced. Also, by performing a flocking processing to the surface of the reinforcing member, the flattening of the frequency characteristics is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker cabinet, and more particularly to a shape of a reinforcing member disposed at a corner between an inner side surface of a wooden end of a speaker cabinet and a front surface of a baffle, the baffle being deeper than a front end of the wooden end.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional speaker cabinet in which a baffle is located deeper than a tip end of a tip. The tip 1b of the side plate of the cabinet 1 projects from the front of the baffle 1a. When the protection grill net 7 is fixed to the front surface of the baffle 1a so as not to be detachable, reinforcing corner blocks 2, 2...

The corner block 2 is generally made of waste wood of the cabinet 1, and is often small in size because it is shared with the corner block 2a to be mounted inside the cabinet from the mounting hole 1c of the speaker unit 8, and is usually 20 mm × 20 mm × 60.
In most cases, the shape of a triangular prism having a bottom surface of a right-angled isosceles triangle of about mm was used.

[0004]

In the above-described conventional speaker cabinet, there is a disadvantage that the inner surface 1d of the opening 1b adversely affects the sound radiated from the speaker unit 8. Further, the material of the reinforcing corner block 2 is often made of the waste wood of the cabinet as described above, and the fixing method also uses an adhesive, and the corner block 2 is attached to the inner surface 1d of the opening 1b.
However, there is a problem that the appearance is inferior unless the grill net is fixed so that it cannot be attached or detached, since it protrudes discontinuously.

[0005] The present invention has been made in view of the above points, and it is an object of the present invention to provide a speaker cabinet which has good sound quality of sound radiated from a speaker unit and has an excellent appearance. It is in.

[0006]

According to the speaker cabinet of the present invention, in a speaker cabinet in which a wooden edge of a side plate protrudes from a front surface of a baffle, a reinforcing member is disposed at a corner between an inner surface of the protruding side plate and a front surface of the baffle. Is extended over the entire inner surface of the protruding side plate to eliminate the wall surface extending vertically from the front surface of the baffle.

Further, in the speaker cabinet, the reinforcing member is formed of a resin molded product.

Further, in the speaker cabinet,
The reinforcing member is formed of a metal such as aluminum.

In the speaker cabinet,
The reinforcing member is made of solid wood.

In each of the speaker cabinets, the surface of the reinforcing member is formed with a smooth curved surface. .

Further, in each of the speaker cabinets, the reinforcing member has an asymmetrical shape in right and left and up and down directions.

Further, in each of the speaker cabinets, a member having a sound absorbing effect such as flocking is applied to a surface of the reinforcing member.

Further, in each of the speaker cabinets, the reinforcing member has a screwing structure.

Further, in each of the speaker cabinets, the reinforcing member is formed so as to cover the opening.

[0015] As described above, since the reinforcing member extends over the entire inner surface of the kiguchi, there is no vertical wall around the baffle which adversely affects the radiated sound, and the sound quality of the sound radiated from the speaker cabinet is improved. Is done. Also, the strength of the cabinet is increased.

Further, by forming the reinforcing member of resin or metal, the surface can be formed into a smooth curved surface or a shape such as left-right asymmetry can be freely formed, thereby improving aesthetic appearance or improving sound quality. be able to.

Further, by finishing the surface of the reinforcing member with flocking or the like, the reflected sound from the baffle, which is an unnecessary component other than the sound directly radiated from the speaker unit, is reduced.

Further, when the reinforcing member is fixed by screwing, it is not necessary to use an adhesive, so that the workability is improved and the adhesive does not protrude during assembly.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A speaker cabinet according to an embodiment of the present invention will be described with reference to the drawings. In the figure,
Portions having the same functions as those shown in the conventional example are denoted by the same reference numerals. FIG. 1 shows a first embodiment of the present invention. The speaker cabinet 1 of the embodiment is applied to a two-way speaker system, and a front surface of a baffle 1a to which a speaker unit 8 is attached is located deeper than a mouth 1b.

A wooden reinforcing member 3 having a triangular cross section is adhered so as to cover the entire area of the corner between the opening 1b and the baffle 1a. In the conventional speaker cabinet shown in FIG. 4, the inner surface 1d of the wood mouth rises vertically from the baffle, so that it becomes difficult to obtain a good frequency characteristic because it obstructs the radiated sound. Since the inner side surface 1d is entirely covered with the reinforcing member 3, good frequency characteristics can be obtained.

FIG. 5 shows the frequency characteristics of the conventional speaker cabinet, and FIG. 6 shows the frequency characteristics of the speaker cabinet of the first embodiment. In the embodiment, the fluctuation of the sound pressure level at 2000 to 20000 Hz is smaller than that of the conventional one.

Since the strength of the speaker cabinet of the first embodiment is higher than that of the conventional speaker cabinet, the vibration attenuation is quick and unnecessary components in acoustic radiation are reduced. 7 and 8 show a conventional speaker cabinet and a first speaker cabinet, respectively.
13 shows vibration attenuation characteristics of a speaker system using the speaker cabinet of the embodiment.

FIG. 2 shows a second embodiment of the present invention. In the speaker cabinet 1 of the second embodiment, the shape of the reinforcing member 4 is left-right and vertically asymmetric, as compared with the speaker cabinet 1 of the first embodiment.
In addition, the surface from the front end surface of the kiguchi 1b to the front surface of the baffle 1b is a smooth curved surface.

By forming the reinforcing member 4 in such a shape, an adverse effect on the radiated sound due to an angled portion such as a joint portion between the reinforcing member 4 and the baffle 1b or the lip 1b, that is, generally referred to as a diffraction phenomenon. The generation of unnecessary components in the radiated acoustic radiation is suppressed. Making the shape of the reinforcing member 4 asymmetrical in the left, right, up and down directions is more effective in removing unnecessary components of radiated sound.

FIG. 3 shows a third embodiment of the present invention. In this embodiment, as in the second embodiment, the shape of the reinforcing member 5 is made asymmetrical in the left-right and up-down directions, and its surface is made a smooth curved surface. In order to make it possible, the reinforcing member 5 covers the kiguchi 1b to the tip. This shape can reduce the adverse effect on the radiated sound of the Kiguchi corner part not only in appearance but also in performance.
It can also be applied to expensive Hi-Fi speakers.

Further, the reinforcing member 5 is fastened to the baffle 1b with screws 6, 6,. The conventional corner block 2 shown in FIG. 4 is generally fixed by an adhesive such as hot melt.
By using this as a screw, troubles such as sticking out of the adhesive can be greatly reduced, and productivity can be improved.

In the case where the surface of the reinforcing member is curved as in the second and third embodiments, it is difficult to make the reinforcing member from a waste material such as a conventional particle board, so that there is a high degree of freedom in the shape. It is preferable to use a resin molded product or a metal such as aluminum. If the materials of the cabinet and the reinforcing member are different, sound is difficult to be transmitted from the cabinet to the reinforcing member, and the diffraction phenomenon is less likely to occur.

The present invention can be applied more effectively when the reinforcing member is properly selected depending on the speaker sound quality, appearance, cost and the like. Further, by performing the flocking process on the surface of the reinforcing member, the frequency characteristics can be easily flattened, and a speaker system with higher performance can be realized. The present invention can be effectively applied from low-priced loudspeakers to expensive hi-fi loudspeakers by using the above-mentioned methods in combination.

[0029]

According to the speaker cabinet of the present invention, the performance and appearance can be improved in a speaker cabinet in which the opening of the side plate protrudes from the front surface of the baffle. Then, a speaker cabinet of a type conventionally used only for an inexpensive speaker system in which a grill net cannot be attached or detached can be used for an expensive high-fidelity speaker, and can be used for various purposes.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a speaker cabinet according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view showing the speaker cabinet.

FIG. 2A is a perspective view illustrating a speaker cabinet according to a second embodiment of the present invention, and FIG. 2B is a cross-sectional view illustrating the speaker cabinet.

FIG. 3A is a perspective view showing a speaker cabinet according to a third embodiment of the present invention, and FIG. 3B is a sectional view showing the speaker cabinet.

FIG. 8A is a perspective view showing an example of a conventional speaker cabinet, FIG. 8B is a cross-sectional view showing the speaker cabinet, and FIG. 8C shows a grill net used in the speaker cabinet. FIG.

FIG. 5 is a graph showing frequency characteristics of a speaker system using a conventional speaker cabinet.

FIG. 6 is a graph showing frequency characteristics of the speaker system using the speaker cabinet according to the first embodiment of the present invention.

FIG. 7 is a diagram showing a vibration damping characteristic of a speaker system using a conventional speaker cabinet.

FIG. 8 is a diagram showing a vibration damping characteristic of a speaker system using the speaker cabinet according to the first embodiment of the present invention.

[Explanation of symbols]

1 Cabinet, 1a Baffle, 1b Kiguchi, 1c
Speaker mounting hole, 1d Kiguchi inner surface 2 Corner block 3 Reinforcement member 4 Reinforcement member 5 Reinforcement member 6 Screw 7 Grill net 8 Speaker unit

Claims (9)

[Claims] 1. A speaker cabinet in which a cutout of a side plate protrudes from a front surface of a baffle, a reinforcing member disposed at a corner between an inner surface of the protruded side plate and a front surface of the baffle is provided on an entire inner surface of the protruded side plate. A speaker cabinet extending over the baffle and having no wall surface extending vertically from the front surface of the baffle. 2. The speaker cabinet according to claim 1, wherein said reinforcing member is formed of a resin molded product. 3. The speaker cabinet according to claim 1, wherein said reinforcing member is formed of a metal such as aluminum. 4. The speaker cabinet according to claim 1, wherein said reinforcing member is formed of solid wood. 5. The speaker cabinet according to claim 1, wherein a surface of the reinforcing member is formed as a smooth curved surface. 6. The speaker cabinet according to claim 1, wherein the reinforcing member has an asymmetric shape in the left-right and up-down directions. 7. The speaker cabinet according to claim 1, wherein a member having a sound absorbing effect such as flocking is provided on a surface of the reinforcing member. 8. The speaker cabinet according to claim 1, wherein the reinforcing member has a screwing structure. 9. The speaker cabinet according to claim 1, wherein the reinforcing member is formed so as to cover the opening.