KR200173865Y1 - Resonance box of guitar - Google Patents

Abstract

The present invention relates to a guitar, and more specifically, in a classical guitar, by resonating the resonance box (共鳴 箱子; sound ring) to be able to exhibit more distinct sound quality and amplified volume,

Improving the sound quality and volume of the guitar by combining the reinforcing member 10 coupled to the back surface of the sound board 4 of the resonance box 2 is inserted into the sound board 4 so as not to protrude from the back surface of the sound board 4. And an amplification effect and an effect that can provide a clearer and clearer sound.

Description

Resonance box of guitar

The present invention relates to a guitar, and more specifically, in a classical guitar, the resonance box (共鳴 箱子; 림 子; sound ring) has been improved so that the sound quality and amplified volume can be exerted.

As is well known, the guitar is largely composed of a resonance box, which is a vibrating sound box that vibrates from external sound waves, and a neck to which strings (about 6-12) are connected. The sound of the strings is pronounced by causing the strings to vibrate inside the resonance box, which is a very important component in determining the sound quality and volume of the guitar. .

In particular, the front plate and the rear plate constituting the resonance box is to lead the volume and sound quality, the front plate is the neck is connected to the neck is connected to the inner side is connected to the bridge pedestal so as to prevent bending, etc. due to the tension (string) of the string The fan-shaped reinforcement member is combined.

Therefore, by improving the coupling structure of the bridge pedestal and fan-shaped reinforcement member (hereinafter referred to as reinforcement member) constituting the front plate, minimize negative effects such as sound quality and volume due to them, and improve sound quality and volume amplification effect. Attempts are being made to develop new structures that can be made.

Theoretically, the guitar's tone has the same relation to one basic tone, but in practice, the tone is always modified by the nature of the pronunciation.

Guitar sounds are characterized by a particular range of partial notes (Formant theory, Formant: amplification, ie the relationship between the degree of resonance and the frequency. It resonates and converts the inaudible sound into a very loud sound, but in doing so it gives the instrument its own formant, so that the components of the various frequencies (sound waves) produced by the string's vibration are different. It is amplified to determine the timbre), which is determined by the parts of the formant.

Normally, the guitar produces harmonic vibrations in the front panel, smooth indirect resonance (panel resonance cf. volume resonance) of the front panel, and the guitar's original idyllic, heavy tone and treble. It creates an excellent balance of sound between bass and bass, which means that the heavy lead pipes of post-Renaissance-Italian Italy not only convey the air and surround the air as far as the bowl, which is formed by the thick and elastic nature of lead. It's like making a stronger sound than the power first applied to make it.

In general, in the guitar, the front plate (hereinafter referred to as the front plate) determines the poomsae of the sound by changing the thickness, size, etc. to change the simple vibration of the strings harmoniously and rhythmically.

In addition, the reinforcing member attached to the facing plate is to change the quality of the sound by the number, volume, weight, direction, etc. In particular, the reinforcing member in the guitar is one of the main factors that determine the quality of the sound depending on how it is produced.

The type of reinforcing member of the reinforcing plate that many producers manufacture is to make the bridge base and the reinforcing member protrudingly intersecting in the form of cross in the inside of the reinforcing plate. It becomes the form to be cut off.

This method of manufacturing is not bad in that the sound produced by the instrument is not a single single sound but a complex sound of the combined partial sounds. Lateral vibrations cause mutual interference of longitudinal vibrations, which are inherent to the strings. (See Figure 7)

The greatest principle that determines an instrument is derived from the identification of proportions, and the sketches and designs of many former producers, such as Ramirez and Hauser, show how thorough they are in terms of measured values and proportions, while they cannot be easily copied. The fact is that proportion is not a strict formula.

Instrument makers have obtained their norms by ear, and by ear, they understand how to apply their knowledge of proportions in the production of instruments, and therefore their reinforcement The member fabrication method uses the empirical wisdom that has been handed down through generations to determine the height, width, and length of the reinforcement member based on the weight, density, strength, and potential resonance of the panel material, and utilize it in the fabrication.

In general, musical instruments, such as guitars, transmit vibrations from a string's forced displacement to strings or resonance boxes, which allow the resonance box to transmit much more vibrations outside the resonance box. To be delivered to the air.

The air mass inside the resonance box can vibrate because it has elasticity and inertia, and the longer the body of the air mass compared to its diameter, the more musical the sound.

Of particular importance here is the surprising effect of the reclamation board, on the other hand it is very ironic in that it cannot be reasonably argued.

Violin theorist Hans Kayser has developed a very interesting theory in his papers, which has a specific curve (kaiser curve) obtained by converting the proportions of the notes into a vector. Is to change and develop.

His theory explains why the incense plates should be made of wood and how they turn into a harmonious ring.

In other words, the understanding of musical instruments begins with understanding the relationship between sound and materials and concludes with a change of form.

The main conditions for the creation and expansion of Harmonic vibrations are elasticity and inertia.

Without elasticity and inertia, the string cannot vibrate properly and properly to produce musical notes, and the resonator box cannot respond properly and resonantly to the first stimulus.

The organic character of wood is that inorganic materials can't imitate the tone. It has a special meaning. In the other case, the large surface of the wooden board is used to stimulate more air and act as an amplifier for vibration.

As a result, many producers have tried to adjust the tone by lowering the incense plate to the pitch division of the incense above it for smooth sound and idyllic sound.

In other words, the part where the high string is caught is made thinner and the lower part is made thicker to get the most help for resonance.

This property of the board can be seen by tapping around, but not all producers have followed this way.

In particular, in other cases, this role is performed by the facing plate (reinforcing member).

The reinforcing member can be reinforcement of cracks and bursts of the sound board and change the flow and induction of sound and the quality of sound by the number, volume (length, thickness, width), weight, and direction.

Bridge pedestals are generally 60 kg or more in tension, and the bridge pedestals on the outer surface of the incense plate are used to support the force acting on the incense plate while the incense plate is attached to each other. To prevent deformation, reinforcement of reinforcement and reinforcement, and to change the core and sound quality of sound by volume and weight.

Facing boards induce sound flow and sound according to thickness, size, wood grain, and thickness change of each part.The length, volume, weight, shape of bridge support and length, volume, number, shape, direction of reinforcement member Together, it is a very important component that determines the core of a sound, the quality of sound, and the balance of the guitar.

Bridge pedestals and reinforcing members are usually combined in a protruding form on the inner side of the incline plate, which consists of a '+' shape, so one of the two is cut off, or one half or one third is cut off, and has a fatal flaw. It was.

For example; At the even frequency of a constant bar, if a part becomes a slit bar (a bar with uneven bumps), the frequency becomes uneven.

In addition, the reinforcing member coupled to the protruding type causes diffuse reflection in the resonance box (ring box) of the incense plate, so that the reflection of the sound is coherent, and the string is always tied, so that the exercise load acts on the incense plate (fiber of the wood) as the standard tuned string continues. This will make the incense plate always tense.

This means that the more you play (the other), the more the sound becomes. However, in the conventional reinforcing member protruding structure described above, the function of suppressing the sound of the sound between the reinforcing member and the bridge pedestal acts as a strong function of the sound. ) Will be longer.

In other words, the more you play after the initial production of the guitar, the more gradually the sound of the sound is found, and the sound of the sound is found. In the past, the sound of the sound is caused by the reflection of the reinforcement member. It was going to take a long time.

Therefore, in the present invention, the coupling structure of the bridge pedestal and reinforcing member constituting the facing plate It is intended to contribute to the improvement of the sound quality and volume of the guitar by minimizing the negative effects on the sound quality and volume due to the improvement.

In particular, the reinforcing member of the reinforcing plate and the reinforcing member among the bridge pedestals are made of insert type so that one of the reinforcing member and the bridge pedestal is not cut or cut, so that the diffuse reflection of the resonance box is minimized with the even frequency so as to reduce the noise and sound suppression phenomenon. It is intended to be able to produce a high volume by preventing it, and also to be able to produce a very good, profound and deep sound with the core and sound balance of one of the indispensable things of the guitar sound.

1 is a perspective view of a guitar to which an embodiment of the present invention is applied

Figure 2 is an exploded perspective view showing the main parts extract of the present invention

3 is a perspective view of the coupled state of FIG.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a cross-sectional view taken along the line B-B of FIG.

FIG. 6 is a cross-sectional view illustrating main parts of another embodiment of FIG. 2; FIG.

7 is a view showing the operation of the existing other resonance box

8 is a view showing the operation of the resonance box according to the present invention

☞ Explanation of symbols used in the main part of the drawing ☜

1; Guitar 2; Resonance Box

3; Neck 4; Incense plate

5; thick plate 6; side plate

7; ringing ball 8; string

9; Bridge support 10; Reinforcement member

11; assembling groove

1 is a perspective view of a guitar to which one embodiment of the present invention is applied, FIG. 2 is an exploded perspective view showing a main part extract of the present invention, FIG. 3 is a perspective view of the coupled state of FIG. 2, FIG. 4 is a sectional view taken along line AA of FIG. 2, and FIG. 5. Is a cross-sectional view taken along line BB of FIG.

The present invention mainly improves the sound volume and sound quality by improving the reinforcing structure of the sound board (4, front panel) of the resonance box (2) and the resonance box (2) into a multi-resonance structure in the classical guitar (1). If there is a feature to look at in detail with respect to the present invention as follows.

The incline plate 4 constituting the resonance box 2 is connected to the neck 3 through the ringing hole 7 on the front side, and thus the bending strength of the incense plate 4 due to the tensile force of the string 8 is connected. In order to reinforce the bridge pedestal 9 and the reinforcing member 10 has a reinforcing structure coupled in the cross direction.

The present invention, in the reinforcing structure of the above-mentioned facing plate (4), several reinforcing members (10) coupled in the longitudinal direction of the facing plate (4) to the inside without engaging in a protruding state on the back side of the facing plate (4) as before Coupled to the inserted structure, the bridge pedestal 9 is coupled to the reinforcing member 10 in the cross direction will be configured to combine in a long oval convex shape.

That is, as shown in FIG. 3, the reinforcing member 10 is formed on the rear surface of the facing plate 4 so that the reinforcing member 10 may be inserted into and coupled with the reinforcing member 10. 10 is adhesively bonded to the assembly groove 11 with an adhesive or the like, so that the reinforcing member 10 does not protrude from the facing plate 4.

And, the bridge pedestal (9) coupled in the cross direction with the reinforcing member 10 is coupled to the position passing through the approximately central portion of the reinforcing member (10), the lower surface is a planar reinforcement member 10 is inserted and coupled It is to be combined with the back surface of the facing plate 4, and the upper surface is convex to a smooth arc shape, and the whole shape is comprised in long oval shape.

Therefore, only the bridge pedestal 9 is configured in the protruding state on the back surface of the facing plate 4 into which the reinforcing member 10 is inserted.

On the other hand, Figure 6 is a cross-sectional view of the main portion showing another embodiment of Figure 2, which omits the coupling configuration of the reinforcing member 10, only the bridge pedestal 9 alone coupled to the back surface of the facing plate 4 in the protruding state facing plate The reinforcement structure of (4) is constituted.

The present invention constituted as described above has a reinforcing member 10 coupled to the rear surface of the facing plate 4 in an inserted state, and the bridge pedestal 9 having an upper surface of a long oval convex in the cross direction with the reinforcing member 10. Reinforces the bending strength of the incense plate 4 due to the tension of the string 8 connected to the neck 3 side as in the past, and at the same time, the sound waves ringing inside the resonance box 2 by the string 8 It is more efficiently transmitted to (4) and prevents diffuse reflection of sound waves by the protruding reinforcing member 10, so that the echo effect of the sound board 4 has an amplification and purification effect, and the sound quality improvement effect can be promoted. Looking at the operation according to the configuration of the present invention as follows.

In general, sound waves generated from a particular sound source spread far and gradually attenuate as long as there are no obstacles.

However, when there is an obstacle (inside of the resonance box 2), the reflection sounds generated from the facing plate 4 (front plate), the side plate 6, the rear plate 5, and the like overlap each other to form a very complicated aspect (see FIG. 7).

Characteristic of the sound waves in the resonance box (2);

1) The reflection angle reflected by the line along the traveling direction of the sound wave generated by the vibration of the facing plate 4, that is, the line perpendicular to the traveling wavefront becomes equal to the projection angle, and the reflection line is located in the projection plane.

2) Even after the sound source is stopped, reverberation occurs due to the reflected sound.

3) In particular, the internal shape and interior materials cause various unusual phenomena such as echo, flutter, sound focus, and dead point.

4) Even if the sound arrives in more than one direction in the room, the sound image is generated in either direction.

This is due to the effect that the sound source is oriented in the direction of the preceding sound that arrives quickly in time with respect to the time difference of the sound waves. (1st facet law)

Therefore, in the case of the existing reinforcing member 10, the protruding incense plate 4 may generate multiple reflections, not only to reduce the sound clarity, but also to cause a serious defect by making a stain in the sound pressure distribution. (See Figure 7)

In particular, dead spots of sound waves, such as region (A) of FIG. 7, occur everywhere, thereby reducing the role of a resonator and attenuating rich and harmonic reverberation.

In addition, as the sound waves are dispersed in the protruding portion as shown in FIG. 7C, standing waves are generated by the interference of the reflected sound, and the sound waves when the directionality as shown in FIG. 7B is to be played for a large audience. It may cause undesirable concentration.

However, the reinforcing member 10 of the present invention, the insertion type facing plate 4, as described above, makes an even sound pressure distribution inside the resonance box 2, which not only produces a clearer and sounder sound, but also resonates the entire cylinder with an even projection angle of sound waves. You can hear the giving sound (see Figure 8).

In particular, the irregular music distribution, dead point, sound focus, etc., which were pointed out as a disadvantage in the existing reinforcing member 10, the reinforcing plate 10 is eliminated, thereby maintaining the natural tone of the guitar (1). It becomes possible.

As described above, the present invention mainly consists of the reinforcement member 10 of the reclining plate 4 of the resonance box 2 in the classical guitar 1, and the bridge pedestal 9 is formed into an elliptic curved surface. To minimize the diffuse reflection of the sound waves oscillating from the first string (8) to minimize the negative effects on sound quality degradation and tone changes to the existing reinforcing member (10) projected structure, and even frequency in the resonance box (2) It is possible to achieve high volume by preventing sound suppression phenomenon as well as smoothness of sound, and to provide more distinct and higher sound quality (clitoris) by adding sound clarity.

Claims (3)

In constructing the resonance box (2) of the guitar (1), It characterized in that it comprises a reinforcing member (10) coupled in the inserted state that does not protrude from the back surface of the resonator plate (2) of the resonance box (2), and a bridge pedestal (9) fixedly coupled to the outside of the reinforcing member (10) Guitar resonance box. The method of claim 1, By forming the assembling groove 11 on the back side of the facing plate 4 and inserting the reinforcing member 10 therein, the reinforcing member 10 is coupled so as not to protrude from the back side of the facing plate 4. Guitar resonance box. The method of claim 1 The bridge pedestal (9) is another resonance box, characterized in that the coupling surface is made of an oval with the upper surface arc-shaped surface as a smooth surface.