CN218631342U - Soundboard with sound tunnel in grand piano - Google Patents

Abstract

A soundboard with a sound tunnel in a triangular piano is characterized in that a first groove and a second groove are formed in the outer wall of the soundboard, the first groove is obliquely arranged in the width direction of the soundboard, and the second groove is obliquely arranged in the length direction of the soundboard; the two grooves are crossed and communicated with each other, and the outer wall of the soundboard is divided into four resonance areas; the two grooves form sound tunnels on the outer wall of the soundboard respectively. The utility model discloses changing the soundboard into present standard vibration mode by free vibration mode in the past, solved three angle steel qin Gao Yinou from the angle of vibration, sympathetic response, sound production and can not come out, and the bass region is muddy and mellow not enough problem, has especially improved to the pronunciation of bass region. Practice proves that the improved design scheme has outstanding substantive features and remarkable technical progress, and obvious technical effect is obtained.

Description

Soundboard with sound tunnel in grand piano

Technical Field

The utility model relates to a grand piano, concretely relates to soundboard of voiced sound tunnel in three angle steel qin.

Background

The piano is a keyboard instrument in Western classical music and is known as the king of the instrument. It is composed of 88 keys (52 white keys, 36 black keys) and a metal string sound board.

The piano has six main structures including strings, a skeleton, soundboards, a string striking machine system, a wooden shell and pedals. The soundboard (see figure 1) is composed of a sounding board (also called a soundboard big board), a wood assistant (also called a gear), a soundboard frame and string codes. The sound board is like a thin plate, the wood aids arranged at a certain distance are adhered on the lower surface of the sound board, the sound board frame is adhered on the periphery of the sound board, and the middle and high pitch string codes and the low pitch string codes are fixed on the upper surface of the sound board. When the strings vibrate, the sound board is vibrated through the transmission of the string codes tightly attached to the sound board, and the sound board starts to work. The soundboard is one of the components that play an important role in the sound quality of a piano. The strings are vibrated and sounded after being struck by the hammer, and the soundboard bears the vibration from the strings through the transmission of the string codes to enhance the sound radiation, strengthen the original sound and broadcast the energy obtained from the vibrated strings to the air as much as possible.

The range of a piano is typically seven octaves, with the high range accounting for about half an octave, the mid range accounting for about four octaves, and the low range accounting for about two and a half octaves.

The conventional grand piano has the following problems: when the grand piano pronounces, its soundboard has a natural resonant frequency, surpasss the certain range of resonant frequency region after, the high pitch district can't shine out, and the bass district is thick and mellow not enough. Especially, the tone quality of the bass region has been a short board of a piano, and even limits the creation width of the composer. The reason for this is that the present grand piano soundboard cannot satisfy a good wide-band vibration from a high range to a low range, that is, cannot simultaneously accommodate a wide frequency variation resonance and vibration in a high range, a middle range and a low range. In conclusion, the structural design of the soundboard of the traditional grand piano is unreasonable, and the soundboard is not favorable for exerting good sound wave vibration from a high-pitch area to a low-pitch area.

Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.

Disclosure of Invention

The utility model aims at providing a soundboard of voiced tunnel in three angle steel qin.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a soundboard with a sound tunnel in a triangular piano is characterized in that the inner wall of the soundboard is arranged towards strings of the piano; a first groove and a second groove are formed in the outer wall of the soundboard, wherein the first groove is obliquely arranged in the width direction of the soundboard, and the second groove is obliquely arranged in the length direction of the soundboard;

the first grooves and the second grooves are crossed on the outer wall of the soundboard and are communicated with each other, the crossed points are located in the center of the soundboard, and therefore the outer wall of the soundboard is divided into four resonance areas;

the first groove and the second groove form a sound tunnel on the outer wall of the soundboard respectively.

The relevant content in the above technical solution is explained as follows:

1. in the above scheme, the first grooves and the second grooves are crossed on the outer wall of the soundboard and are communicated with each other, so that the vibration of the strings can be transmitted to the periphery of the soundboard rapidly through the cross-shaped sound tunnel (namely the sound tunnel) formed by the grooves.

2. In the above scheme, the intersection point of the first groove and the second groove is located in the center of the soundboard so as to improve the tone quality and tone color of the soundboard.

3. In the above-mentioned scheme, each of the soundboard be equipped with many radiation sound roof beams respectively in the resonance region, each radiation sound roof beam parallel arrangement in the same resonance region, and at least one the one end of radiation sound roof beam is towards the geometric centre of soundboard horizontal direction to strengthen the intensity of soundboard.

4. In the above-mentioned scheme, still be equipped with many radiation sound roof beams on the soundboard, radiation sound roof beam is located each resonance region is in to be radially arranged with the center of soundboard horizontal direction as the benchmark.

5. In the scheme, the soundboard is divided into a peripheral high-sound area, a middle-sound area and a central low-sound area from a sound frequency range; the wall thickness of the soundboard is gradually thickened from outside to inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area;

by the design, the thicker bass region is arranged close to the center, so that low-frequency vibration with lower frequency and larger amplitude can emit more muddy and mellow bass in the bass region of the soundboard; through setting up thinner high pitch area in the position of keeping away from the center, can make the frequency higher, the less high-frequency vibration of amplitude send more penetrating, bright high pitch at the high pitch area of soundboard, and then make grand piano all obtain effectively promoting at tone quality, the tone quality that full frequency channel produced.

6. In the above-mentioned scheme, the inner thickness of radiation sound roof beam is greater than outer end thickness, borrows this design, can realize strengthening the central zone of soundboard.

7. In the above scheme, first slot with the second slot is the arc wall, can be so that the soundboard reduces the thickness sudden change as far as possible in thickness, avoids influencing the sympathetic response and the vibration of soundboard.

8. In the above scheme, the lengths of the first groove and the second groove are both smaller than the horizontal width of the soundboard, and smooth transition surfaces are arranged between the outer ends of the first groove and the second groove and the outer wall of the soundboard.

The utility model discloses a theory of operation and advantage as follows:

the utility model relates to a soundboard with sound tunnel in a triangular piano, wherein the outer wall of the soundboard is provided with a first groove and a second groove, the first groove is obliquely arranged in the width direction of the soundboard, and the second groove is obliquely arranged in the length direction of the soundboard; the two grooves are crossed and communicated with each other, and the outer wall of the soundboard is divided into four resonance areas; the two grooves form sound tunnels on the outer wall of the soundboard respectively.

Compared with the prior art, can't compromise the problem that high, well, bass district possess good sympathetic response tone simultaneously in order to solve current grand piano, the utility model discloses soundboard design in to current grand piano, especially grand piano has improved. Specifically, a cross-shaped groove is formed in the outer wall of the soundboard, so that a cross-shaped sound tunnel is formed in the outer wall of the soundboard.

The utility model discloses to current grand piano Gao Yinou bright not come out, and the not enough problem of bass district perfectly, carried out deep discussion and research to grand piano's design and sound production mechanism, found out the not good leading cause of tone quality in current grand piano high pitch district and bass district because the soundboard design is unreasonable to be sent. In view of the above, the inventor has broken the constraint that grand piano constitutes the design in the past, and the bold has proposed the utility model discloses an improve design, this kind of improve design changes the soundboard into present standard vibration mode by the free vibration mode in the past, has solved the angle of vibration, sympathetic response, sound production that the grand steel musical instrument Gao Yinou can not shine, and the problem that the bass zone is muddy and mellow and full is not enough, practice proves that this improves design has outstanding substantive characteristics and apparent technological progress to obvious technological effect has been obtained.

The utility model discloses especially, the tone quality problem to current grand piano improves the soundboard, has compensatied the register short slab of piano, has widened composer's creation width.

Because of above-mentioned technical scheme's application, the utility model discloses compare with current grand piano soundboard and have following advantage and effect:

1. the utility model discloses seted up the cross slot on the soundboard outer wall, this cross slot actually forms cross sound tunnel on the outer wall of soundboard, and the vibration is collected by the soundboard center to through the transmission of cross sound tunnel (the tunnel of sound promptly) to the edge all around of soundboard rapidly, this has played the key role to tone quality and the tone quality that improves the high sound zone.

2. The utility model discloses a design of cross slot marks off four sympathetic response regions on the soundboard. When the piano is played, the vibration of the strings is transmitted to the center area where the sound tunnels intersect, then transmitted to the four resonance areas through the sound tunnels, and resonance and vibration are generated, so that the string sound is amplified to be the resonance sound of the tone plate. The piano can only produce three sound wave volume when playing before improving, and in the resonant cavity, the soundboard corresponds the region and is a resonance region, and resonance region produces a sound wave volume, adds a string wave volume, and in addition one percussion wave volume counts three sound wave volume altogether. And after improving the utility model discloses can produce six sound wave volume when the piano is played, wherein, four sympathetic response regions produce four sound wave volumes, in addition a string wave volume, in addition a percussion wave volume counts six sound wave volumes altogether. The sound wave quantity, i.e., the number of sound waves, for a specific stringed instrument, in addition to one string wave quantity and one percussion wave quantity, mainly depends on the number of resonance areas of the tone plate, and usually, the instrument produces one sound wave quantity per resonance area during playing, and how many resonance areas produce how many sound wave quantities. In addition, the sound volume directly affects the timbre, penetration and volume of the instrument. Therefore, the design of the invention can obviously improve the timbre of the high-tone area and the low-tone area and increase the penetrating power of the high-tone area and the low-tone area.

4. The utility model discloses each slot all adopts the arc wall, can be so that the soundboard reduces the thickness sudden change as far as possible in thickness, avoids influencing the sympathetic response and the vibration of soundboard.

Drawings

FIG. 1 is a schematic structural diagram of a conventional grand piano soundboard;

fig. 2 is a schematic structural diagram of the soundboard according to the embodiment of the present invention (without connecting beams);

FIG. 3 is a schematic structural diagram of a soundboard (with connecting beams) according to an embodiment of the present invention;

fig. 4 is a schematic side view of a soundboard according to an embodiment of the present invention (without tie-beams);

fig. 5 is a schematic side view of a soundboard according to an embodiment of the present invention (with connecting beams);

fig. 6 is a schematic sectional view of a soundboard body according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an acoustic beam assembly (with a connecting beam) according to an embodiment of the present invention;

fig. 8 is a schematic side view of an acoustic beam assembly (with a connecting beam) according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a radiation sound beam according to an embodiment of the present invention;

fig. 10 is a schematic side view of a radiation beam according to an embodiment of the present invention.

In the drawings above: 1. a soundboard; 2. a first trench; 3. a second trench; 4. a sound beam assembly; 4a, a strip-shaped sound beam component; 4b, connecting the beam; 5. a radiating sound beam; 6. a resonance region; 7. a wooden base; 8. and (4) increasing the weight.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown and described, and in which modifications and variations can be made without departing from the spirit and scope of the invention.

As used herein, the term "connected" or "disposed" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.

As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.

As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

Referring to the attached drawings 2 to 10, the soundboard with the sound tunnel in the triangular piano is characterized in that the inner wall of the soundboard 1 faces to strings of the piano.

A first groove 2 and a second groove 3 are formed in the outer wall of the sound board 1, wherein the first groove 2 is obliquely arranged in the width direction of the sound board 1, and the second groove 3 is obliquely arranged in the length direction of the sound board 1; the first grooves 2 and the second grooves 3 cross each other on the outer wall of the tone plate 1 and penetrate each other, with the cross point being located at the center of the tone plate 1, thereby dividing the outer wall of the tone plate 1 into four resonance regions 6.

The first groove 2 and the second groove 3 form sound tunnels on the outer wall of the soundboard 1 respectively.

Through set up the cross slot on the outer wall of soundboard 1, this cross slot actually forms the cross sound tunnel on soundboard 1 outer wall, and the region that is close to the center collects the vibration of musical instrument string, and the rethread cross sound tunnel is peripheral edge transmission all around to soundboard 1 rapidly, and this has played the key role to the tone quality and the tone quality that improve the high sound zone. Simultaneously through dividing out four sympathetic response regions 6 on the soundboard 1, the vibration accessible sound tunnel transmits to these four sympathetic response regions 6 to produce the resonance, can obviously improve the tone quality in high-pitched region and bass region.

The sound board is characterized in that a sound beam assembly 4 is further arranged in the center of the outer wall of the sound board 1, the sound beam assembly 4 comprises a plurality of strip-shaped sound beam members 4a, and the strip-shaped sound beam members 4a are arranged on two sides of the first groove 2 and two sides of the second groove 3 in pairs.

Through set up tone beam subassembly 4 on the outer wall at soundboard 1, because bass amplitude is big, the frequency is low relatively, the bass sympathetic response is concentrated on the central zone of soundboard 1, and the treble sympathetic response is concentrated on the peripheral edge region all around of soundboard 1, strengthens soundboard 1 central zone intensity, has played important effect to improving bass district tone color and tone quality. Because the thickness of the soundboard 1 is a thickness gradually changing structure (namely, the design of the thickness of the outer part and the thickness of the inner part) with the thickness of the central area being thick and the thickness of the periphery being thin, the strength of the central area of the soundboard 1 is enhanced, the thickness difference between the central area and the periphery area of the soundboard 1 is relatively changed, and the soundboard 1 also has a beneficial effect on improving the tone color and the tone quality of the high-pitch range.

Preferably, as shown in fig. 3 and 5, a connecting beam 4b is arranged between two adjacent strip-shaped sound beam members 4a, and the connecting beam 4b spans over the first groove 2 and the second groove 3 to form the sound beam assembly in a groined shape; and each of the connecting beams 4b is located in a central region of the surface of the soundboard 1. Constitute a "mouth" font additional strengthening through four tie-beams 4b, further strengthen the bass district at soundboard 1 center to reach the further promotion to piano bass district tone quality.

Preferably, the soundboard 1 is divided into a peripheral high-pitch area, a middle-pitch area and a central low-pitch area from the sounding frequency band; the wall thickness of the soundboard 1 is gradually increased from outside to inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area; by the design, the thicker bass region is arranged at a position close to the center, so that low-frequency vibration with lower frequency and larger amplitude can emit more muddy and smooth bass in the bass region of the soundboard 1; by arranging the thin high pitch range at a position away from the center, high-frequency vibration with higher frequency and smaller amplitude can be enabled to emit more transparent and bright high pitch in the high pitch range of the sound board 1. The sound beam assembly 4 is positioned in the bass region, and can further improve the load of the middle area of the sound board 1.

Preferably, as shown in fig. 7 and 8, the sound bar member 4a is composed of a wooden base 7 and a weight 8 connected to the wooden base 7. By this design, the central area of the soundboard 1 can be further strengthened, and the sound quality and the tone quality of the bass zone can be improved.

Preferably, a plurality of radiation sound beams 5 are respectively arranged in each resonance area 6 of the tone plate 1 in equal number, the radiation sound beams 5 in the same resonance area are arranged in parallel, and one end of at least one radiation sound beam 5 faces the geometric center of the tone plate 1. Besides, the radiation sound beams 5 may be radially arranged with the center of the sound board 1 in the horizontal direction as a reference.

Preferably, the inner end thickness of the strip-shaped sound beam member 4a is greater than the outer end thickness, and the inner end thickness of the radiation sound beam 5 is greater than the outer end thickness. With this design, it is possible to realize reinforcement of the center region of the soundboard 1.

Preferably, the first grooves 2 and the second grooves 3 are arc-shaped grooves, so that the thickness of the soundboard 1 is reduced as much as possible, and the resonance and vibration of the soundboard 1 are prevented from being influenced. The lengths of the first grooves 2 and the second grooves 3 are smaller than the horizontal width of the sound board 1; smooth transition surfaces are arranged between the outer ends of the two grooves 2 and 3 and the outer wall of the sound board 1, so that vibration is transmitted to the periphery of the sound board 1 more uniformly.

Other embodiments and structural changes of the present invention are described below as follows:

1. in the above embodiments, the illustrated soundboard is only used for illustration, the structure of the soundboard is not used to limit the protection scope of the present invention, and other soundboards with similar structures should be covered by the technical features of the present invention.

2. In the above embodiment, the number of the sound beam assemblies 4 is not limited to one set, but may be a plurality of sets in parallel or other designs which contribute to the center load reinforcement of the soundboard 1, as will be understood and accepted by those skilled in the art.

3. In the above embodiment, the bar-shaped sound beam members 4a may have a radian as shown in the figure and include long sides and short sides, and are arranged on both sides of the second groove 3 in pairs by the long sides of two adjacent bar-shaped sound beam members 4a and arranged on both sides of the first groove 2 in pairs by the short sides of two adjacent bar-shaped sound beam members 4 a;

alternatively, the strip-shaped sound beam members 4a may also be straight strips, and two of the sound beam members are combined at 90 degrees and are arranged on two sides of the first groove 2 and two sides of the second groove 3 in pairs.

4. In the above embodiments, the first grooves 2 and the second grooves 3 are arc-shaped grooves. However, the present invention is not limited thereto, and the groove may be designed into other shapes, such as a V-shaped, U-shaped, W-shaped, or other concave structures. As would be readily understood and accepted by those skilled in the art.

The utility model discloses to current grand piano Gao Yinou bright not come out, and the not enough problem of bass district perfectly, carried out deep discussion and research to grand piano's design and sound production mechanism, found out the not good leading cause of tone quality in current grand piano high pitch district and bass district because the soundboard design is unreasonable to be sent. In view of the above, the inventor has broken the constraint that grand piano constitutes the design in the past, and the bold has proposed the utility model discloses an improved design scheme, this kind of improved design scheme with the soundboard by the free vibration mode change in the past into present standard vibration mode, from the angle of vibration, sympathetic response, sound production solved the triangle steel musical instrument Gao Yinou bright and can not come out, and the bass zone is muddy and mellow and not enough problem, practice proves that this improved design scheme has outstanding substantive characteristics and apparent technological progress to obvious technological effect has been obtained.

The utility model discloses especially, the tone quality problem to current grand piano improves the soundboard, has compensatied the register short slab of piano, has widened composer's creation width.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (7)

1. The utility model provides a soundboard of voiced tunnel in three angle steel qin which characterized in that:

the inner wall of the sound board (1) is arranged towards the strings of the piano; the outer wall of the soundboard (1) is provided with a first groove (2) and a second groove (3), wherein the first groove (2) is obliquely arranged in the width direction of the soundboard (1), and the second groove (3) is obliquely arranged in the length direction of the soundboard (1);

the first grooves (2) and the second grooves (3) are crossed on the outer wall of the soundboard (1) and are communicated with each other, the crossed point is positioned at the center of the soundboard (1), and the outer wall of the soundboard (1) is further divided into four resonance areas (6);

the first groove (2) and the second groove (3) form a sound tunnel on the outer wall of the soundboard (1) respectively.

2. The soundboard with a tone tunnel in a triangular piano according to claim 1, wherein: the soundboard (1) is divided into a peripheral high-pitch area, a middle-pitch area and a central low-pitch area from a sounding frequency range;

the wall thickness of the soundboard (1) is gradually thickened from outside to inside, the wall thickness of a low-sound area is larger than that of a medium-sound area, and the wall thickness of the medium-sound area is larger than that of a high-sound area.

3. The soundboard with sound tunnel in the trigonal piano of claim 1, wherein: a plurality of radiation sound beams (5) are arranged in each resonance area (6) of the soundboard (1) respectively, each radiation sound beam (5) in the same resonance area is arranged in parallel, and one end of at least one radiation sound beam (5) faces to the geometric center of the soundboard (1) in the horizontal direction.

4. The soundboard with a tone tunnel in a triangular piano according to claim 1, wherein: the soundboard (1) is further provided with a plurality of radiation sound beams (5), and the radiation sound beams (5) are located in the resonance areas (6) and are radially arranged by taking the center of the soundboard (1) in the horizontal direction as a reference.

5. The tone plate with tone tunnel in grand piano according to claim 3 or 4, characterized in that: the thickness of the inner end of the radiation sound beam (5) is larger than that of the outer end.

6. The soundboard with a tone tunnel in a triangular piano according to claim 1, wherein: the first groove (2) and the second groove (3) are both arc-shaped grooves.

7. The soundboard with a tone tunnel in a triangular piano according to claim 1, wherein: the lengths of the first groove (2) and the second groove (3) are smaller than the horizontal width of the soundboard (1); smooth transition surfaces are arranged between the outer ends of the first grooves (2) and the second grooves (3) and the outer wall of the soundboard (1).

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