CN213070575U - Soundboard with ring-shaped sectional type sound beam in piano - Google Patents

Abstract

A soundboard with an annular sectional type sound beam in a piano is provided with a sound beam assembly, wherein the sound beam assembly is erected in the center of the outer wall of the soundboard; the sound beam assembly comprises four arc-shaped sound beam components, each arc-shaped sound beam component is arranged in a ring shape, and a gap is formed between every two adjacent arc-shaped sound beam components; four grooves are further formed in the outer wall of the sound board and are distributed in a cross shape, and the surface of the sound board, which is located on the outer side of the sound beam assembly, is divided into four resonance areas; gaps between the grooves and the two arc-shaped sound beam components are penetrated in a one-to-one alignment way; the groove is concavely arranged on the outer wall of the soundboard to form a sound tunnel. The utility model discloses change the soundboard into present standard vibration mode by free vibration mode in the past, solved the piano high sound zone from the angle of vibration, sympathetic response, sound production and bright not coming out, and the low sound zone muddy mellow not enough problem, especially improved to the low sound zone pronunciation. Practice proves that the improved design scheme has outstanding substantive features and remarkable technical progress, and obvious technical effect is obtained.

Description

Soundboard with ring-shaped sectional type sound beam in piano

Technical Field

The utility model relates to a piano, concretely relates to take soundboard of annular sectional type sound roof beam in piano. The piano includes upright piano and grand piano.

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 problems common to conventional pianos are: when a piano pronounces, a sound board of the piano has inherent resonant frequency, and after the sound board exceeds a certain range of a resonant frequency region, a high pitch region cannot be lightened, and a low pitch region is not perfectly round. 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 main reason for this is that the present soundboards for pianos are unable to satisfy good broad-band vibration from the treble zone to the bass zone, i.e., are unable to simultaneously accommodate wide frequency variation resonance and vibration in the treble zone, the midrange zone and the bass zone. In conclusion, the sound board of the traditional piano is unreasonable in structural design and is not favorable for the sound board to exert 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 take soundboard of annular sectional type sound roof beam in piano.

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

a soundboard with an annular segmented tone beam in a piano, the inner wall of the soundboard being disposed towards the strings of the piano;

the outer wall of the soundboard is provided with a sound beam assembly which is erected in the center of the outer wall of the soundboard; the sound beam assembly comprises four arc-shaped sound beam components, each arc-shaped sound beam component is arranged in a ring shape around the center of the surface of the soundboard, and a gap is formed between every two adjacent arc-shaped sound beam components;

four grooves are further formed in the outer wall of the sound board, and the grooves are distributed in a cross shape by taking the center of the surface of the sound board as a reference, so that the surface of the sound board positioned on the outer side of the sound beam assembly is divided into four resonance areas; the grooves are matched with the gaps between the two arc-shaped sound beam components in a one-to-one alignment mode, and the grooves penetrate through the gaps;

the groove is concavely arranged on the outer wall of the soundboard to form a sound tunnel.

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

1. in the scheme, the grooves are uniformly distributed in a cross shape by taking the center of the surface of the sound board as a reference, so that the vibration of strings is favorably and rapidly transmitted to the periphery of the sound board through a cross-shaped sound tunnel (namely a sound tunnel) formed by the grooves.

2. 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; the sound beam assembly is located in the bass region.

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 the piano all obtain effectively promoting at tone quality, the tone quality that full frequency channel produced.

3. In the above scheme, the groove is arranged in the gap in a penetrating manner. Borrow this design, be favorable to through sound tunnel transmission vibration to more be favorable to promoting the vibration response rate of soundboard.

4. In the above-mentioned scheme, when the soundboard is horizontal, the central line of the upper and lower direction of sound roof beam subassembly overlaps with the central line of the upper and lower direction of soundboard to promote tone quality, tone quality.

5. In the above scheme, the soundboard is further provided with a plurality of radiation sound beams, and the radiation sound beams are located in the resonance areas and radially arranged by taking the center of the surface of the soundboard as a reference.

6. 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.

7. 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.

8. In the above-mentioned scheme, each the 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.

9. In the above scheme, smooth transition surfaces are arranged between the outer ends of the grooves 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 an annular sectional type sound beam in a piano, which is provided with a sound beam component and is erected in the center of the outer wall of the soundboard; the sound beam assembly comprises four arc-shaped sound beam components, each arc-shaped sound beam component is arranged in a ring shape, and a gap is formed between every two adjacent arc-shaped sound beam components; four grooves are further formed in the outer wall of the sound board and are distributed in a cross shape, and the surface of the sound board, which is located on the outer side of the sound beam assembly, is divided into four resonance areas; gaps between the grooves and the two arc-shaped sound beam components are penetrated in a one-to-one alignment way; the groove is concavely arranged on the outer wall of the soundboard to form a sound tunnel.

Compared with the prior art, can't compromise the problem that high, well, bass district possesses good sympathetic response tone simultaneously in order to solve current piano, the utility model discloses soundboard design in to current piano, especially piano has improved. The concrete aspects are as follows: firstly, erecting a sound beam assembly on the outer wall of a sound board; and secondly, a cross groove is formed in the outer wall of the soundboard, so that a cross sound tunnel is formed in the outer wall of the soundboard.

The utility model discloses can not come out to current piano high pitch district brightness, and the not enough problem of low pitch district perfectly, carried out deep discussion and research to the design and the vocal mechanism of piano, found out the not good leading cause of tone quality in current piano high pitch district and low pitch district because the soundboard design is unreasonable to be sent. In view of the above, the inventor has broken the constraint that the design was constituteed to the piano in the past, and the bold has proposed the utility model discloses an improved design scheme, this kind of improved design scheme change the soundboard into present standard vibration mode by free vibration mode in the past, solved the piano highlight and can not come out from the angle of vibration, sympathetic response, sound production, and the bass region is muddy 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 improve the soundboard to the comparatively outstanding bass district tone quality problem of current piano, compensatied the range short slab of piano, widened composer's creation width.

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

1. the utility model discloses set up the sound beam subassembly on the outer wall of soundboard, because the relative high pitch amplitude of bass is big, the frequency is low, the bass sympathetic response is concentrated in the central zone that the soundboard is close to the voice coil loudspeaker voice coil, and the high pitch sympathetic response is concentrated in the peripheral region all around of soundboard, strengthens soundboard central zone intensity, has played important effect to improving bass district tone color and tone quality. The thickness of the sound board is a thickness gradually-changing structure with thick central area and thin periphery, so that the strength of the central area of the sound board is enhanced, the thickness difference between the central area and the peripheral area of the sound board is relatively changed, and the sound board has a beneficial effect on improving the tone color and the tone quality of a high-pitch area.

2. 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.

3. The utility model discloses design into sound beam subassembly with the sound roof beam, design gapped between two arcuation sound beam components especially, consequently more be favorable to through sound tunnel transmission vibration through the clearance to more be favorable to the sympathetic response and the quick vibration response of soundboard.

4. The utility model discloses a design of sound roof beam subassembly and 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.

5. 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 view of a conventional soundboard for an upright piano;

FIG. 2 is a schematic structural diagram of a conventional grand piano soundboard;

fig. 3 is a schematic structural view of an upright piano soundboard according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a grand piano soundboard according to an embodiment of the present invention;

FIG. 5 is a schematic side view of the soundboard of an upright piano according to the embodiment of the present invention;

FIG. 6 is a schematic side view of a grand piano soundboard according to an embodiment of the present invention;

fig. 7 is a schematic sectional view of a soundboard body according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a radiation beam according to an embodiment of the present invention;

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

In the above drawings: 1. a soundboard; 2. a trench; 3. a gap; 4. a sound beam assembly; an arc-shaped sound beam member; 5. a radiation sound beam; 6. a resonance region.

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 fig. 2-9, the inner wall of a sound board 1 of a piano with an annular sectional type sound beam is arranged towards the strings of the piano.

The outer wall of the sound board 1 is provided with a sound beam assembly 4, and the sound beam assembly 4 is erected in the center of the outer wall of the sound board 1; the sound beam assembly 4 includes four arc-shaped sound beam members 4a, each of the arc-shaped sound beam members 4a is arranged in a ring shape around the center of the soundboard 1 in the horizontal direction, and a gap 3 is formed between two adjacent arc-shaped sound beam members 4 a.

Still be equipped with four slots 2 on the outer wall of soundboard 1, slots 2 are concavely located the outer wall of soundboard 1 forms the sound tunnel.

The grooves 2 are arranged in a cross shape by taking the center of the sound board 1 in the horizontal direction as a reference, and further divide the surface of the sound board 1 positioned on the outer side of the sound beam assembly 4 into four resonance areas 6; the grooves 2 are matched with the gaps 3 between the two arc-shaped sound beam components 4a in a one-to-one alignment mode, and the grooves 2 penetrate through the gaps 3.

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.

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.

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 component 4 is positioned in the bass region, so that the load of the middle area of the sound board 1 can be further improved, and the bass tone quality and the tone color can be improved.

A gap 3 is designed between the two arc-shaped sound beam components 4a, and the groove 2 is arranged in the gap 3 in a penetrating manner. Borrow this design, be favorable to through sound tunnel transmission vibration to more be favorable to promoting the vibration response rate of soundboard 1.

Preferably, as shown in fig. 2, the tone plate 1 is further provided with a plurality of radiation beams 5, and the radiation beams 5 are located in the resonance regions 6 and arranged radially with reference to the center of the tone plate 1 in the horizontal direction. Alternatively, the radiation sound beams 5 in the same resonance region are arranged in parallel, and one end of at least one of the radiation sound beams 5 faces the geometric center of the tone plate 1.

Preferably, the inner end thickness of the radiant sound beam 5 is larger than the outer end thickness. With this design, it is possible to realize reinforcement of the center region of the soundboard 1.

Preferably, when the sound board 1 is horizontal, the center line of the sound beam assembly 4 in the up-down direction overlaps with the center line of the sound board 1 in the up-down direction.

Preferably, each groove 2 is an arc-shaped groove, so that the thickness of the soundboard 1 can be reduced as much as possible, and the resonance and vibration of the soundboard 1 are prevented from being influenced. Smooth transition surfaces are arranged between the outer ends of the grooves 2 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 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-shape, a U-shape, a W-shape, and other concave structures. As would be readily understood and accepted by those skilled in the art.

Compared with the prior art, can't compromise the problem that high, well, bass district possesses good sympathetic response tone simultaneously in order to solve current piano, the utility model discloses soundboard design in to current piano, especially piano has improved. The concrete aspects are as follows: firstly, erecting a sound beam assembly on the outer wall of a sound board; and secondly, a cross groove is formed in the outer wall of the soundboard, so that a cross sound tunnel is formed in the outer wall of the soundboard.

The utility model discloses can not come out to current piano high pitch district brightness, and the not enough problem of low pitch district perfectly, carried out deep discussion and research to the design and the vocal mechanism of piano, found out the not good leading cause of tone quality in current piano high pitch district and low pitch district because the soundboard design is unreasonable to be sent. In view of the above, the utility model discloses the people has broken the constraint that the design was constituteed to the piano in the past, and the bold has proposed the utility model discloses an improve the design scheme, this kind of improve the design scheme and change the soundboard into present standard vibration mode by free vibration mode in the past, solved the piano high sound zone from the angle of vibration, sympathetic response, vocal, and the bass zone is muddy and mellow not enough problem, practice proves that this improves the design scheme and has outstanding substantive characteristics and the technological progress that is showing to obvious technological effect has been obtained.

The utility model discloses especially improve the soundboard to the comparatively outstanding bass district tone quality problem of current piano, compensatied the range short slab of piano, 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 (8)

1. A take soundboard of annular sectional type sound roof beam in piano 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 sound beam assembly (4), and the sound beam assembly (4) is erected in the center of the outer wall of the soundboard (1); the sound beam assembly (4) comprises four arc-shaped sound beam components (4 a), each arc-shaped sound beam component (4 a) is arranged in a ring shape around the center of the sound board surface, and a gap (3) is formed between every two adjacent arc-shaped sound beam components (4 a);

four grooves (2) are further formed in the outer wall of the sound board (1), the grooves (2) are arranged in a cross shape by taking the center of the sound board (1) in the horizontal direction as a reference, and then the surface of the sound board (1) located on the outer side of the sound beam assembly (4) is divided into four resonance areas (6); the grooves (2) are matched with the gaps (3) between the two arc-shaped sound beam components (4 a) in a one-to-one alignment mode, and the grooves (2) penetrate through the gaps (3);

the groove (2) is concavely arranged on the outer wall of the soundboard (1) to form a sound tunnel.

2. The tone plate with an annular segmented tone beam in a piano according to claim 1, characterized in that: 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 middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area;

the sound beam component (4) is positioned in the bass region.

3. The tone plate with an annular segmented tone beam in a piano according to claim 1, characterized in that: when the sound board (1) is horizontal, the center line of the sound beam component (4) in the vertical direction is overlapped with the center line of the sound board (1) in the vertical direction.

4. The tone plate with an annular segmented tone beam in a piano according to claim 1, characterized in that: 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 an annular segmented tone beam in a piano according to claim 1, characterized in that: 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.

6. The tone plate with a ring-shaped sectional type tone beam in a piano according to claim 4 or 5, wherein: the thickness of the inner end of the radiation sound beam (5) is larger than that of the outer end.

7. The tone plate with an annular segmented tone beam in a piano according to claim 1, characterized in that: each groove (2) is an arc-shaped groove.

8. The tone plate with an annular segmented tone beam in a piano according to claim 1, characterized in that: smooth transition surfaces are arranged between the outer ends of the grooves (2) and the outer wall of the soundboard (1).

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