JPS5815981Y2 - stringed instruments - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of stringed instruments such as guitars and ukuleles, and in particular, stringed instruments that dramatically improve acoustic effects by attaching a sound collector around the inside of a sound hole bored in the resonant housing. Regarding.

In stringed instruments such as guitars and ukuleles, the playing sound is amplified by resonance within the resonant housing and is propagated into the air through the sound hole to create the tone, but in conventional stringed instruments, part of the resonance sound is This had the disadvantage that it was not possible to extract a sufficient volume of the playing sound because it was trapped in the corners of the resonant housing.

The purpose of this invention is to eliminate the disadvantages of the conventional stringed instruments mentioned above, and to create a stringed instrument that dramatically increases the volume of resonance sound by installing a sound collector around the inside of the sound hole opened in the front panel of the resonant case. To provide VC6.

EMBODIMENT OF THE INVENTION Hereinafter, the specific structure of this invention is demonstrated in detail based on the illustrated Example.

1 in the figure shows the main body of a stringed instrument, which is composed of a neck 2, a head 3, a resonant case 4, a bridge 5, strings 6, etc., and the present invention is based on the sound hole opened on the surface plate 7vc of the resonant case 4 in the main body IK of the stringed instrument. A sound collector 9 is attached around the inside.

The sound collector 9 is made of a metal with a smooth surface, a hard synthetic resin, or a similar material. In the embodiment VC shown in FIG. A sound collector 9 with approximately half of the shape cut out is attached with adhesive or the like. annular part 1
It is 0.

The embodiment shown in FIG. 3 shows a state in which a sound collector 9 is attached around the inside of an auxiliary sound hole 8B formed in the surface plate 7 in addition to the main sound hole 8A. The sound collector 9 has a substantially trumpet-like button that expands outward,
The upper end thereof forms an annular portion 10 that comes into contact with the inner circumferential surface of the auxiliary sound hole 8B, as described above.

The degree of expansion, length, and shape of the sound collector 9 may be appropriately determined depending on the size of the target sound hole, the shape of the resonant housing, and the like.

Next, in FIG. 4, a trumpet-shaped sound collector 9 is attached around the inside of an auxiliary sound hole 8C that is bored at a suitable location in the surface plate 7, in addition to the main sound hole 8A and auxiliary sound hole 8B, and even the VC. This shows an embodiment in which a cap 11 is removably fitted into the opening on the surface plate side of the sound collector 9. In the case of this embodiment, when playing at night or the like, the cap 11 is fitted and the cap 11 is fitted. On the other hand, when trying to obtain a loud playing sound, this camp 11 is removed.

Finally, drill this auxiliary sound hole 8C in a place where it will not be an obstacle when playing, and use the sound hole 8C.
If a trumpet-shaped sound amplifying body 12 is removably attached to the outside of the speaker, the sound volume will further increase, which is desirable (Fig. 5).

The auxiliary sound holes 8B and 8C described above may both be formed in the surface plate 7, or only the main sound hole 8A may be formed without the auxiliary sound hole. Of course.

Furthermore, the sound collector 9 may be attached to all of the auxiliary sound holes 8B and 8C, including the main sound hole 8A, or it may be attached only to the main sound hole 8A and not to the auxiliary sound holes 8B and 8C. Of course, it is also possible to do so.

Furthermore, as shown in FIG. 3, the sound collector 9 installed around the inside of the main sound hole 8A does not necessarily have to be in a perfect trumpet shape, but may be installed in a corner of the resonance housing 4 in an oblique direction. It has been found that a half-trumpet-shaped sound collector is effective in increasing the volume to some extent.

As described above, in the stringed instrument of the present invention, a sound collector is attached around the inside of the sound hole drilled in the surface plate of the resonant case, so the resonance sound of the playing is collected by the sound collector, and most of it is absorbed by the sound hole. The sound is propagated outside and the volume increases dramatically.

In addition, since the playing sound is no longer muffled within the resonant housing, both high and low tones are clear and clear compared to conventional stringed instruments.
It has excellent effects such as

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the stringed instrument of the present invention, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, Fig. 3 is a cross-sectional view taken along line B-B in Fig. 1, and Fig. 4 is a cross-sectional view taken along 5 is a sectional view taken along the line CC in the figure, and FIG. 5 is a sectional view in the autumn state in which a sound amplifying body is attached to the outside of the sound hole. 1: String instrument body, 2: String, 3: Head, 4: Resonance housing, 5
6: string, 7: surface plate, 8A: main sound hole, 8B: auxiliary sound hole, 8C: auxiliary sound hole, 9: sound collector.

Claims (1)

[Scope of utility model registration request] A stringed instrument characterized in that a sound collector is installed around the inner side of a sound hole formed in the surface plate of the resonant casing, and is expanded and extended in a diagonal direction at a corner of the resonant casing.