CN218602075U - Soundboard with annular integral sound beam in piano - Google Patents

Abstract

A soundboard with an annular integral sound beam in a piano is provided with a bridge type sound beam, wherein the sound beam is annularly erected in the center of the outer wall of the soundboard; four grooves are further formed in the outer wall of the soundboard, the grooves are distributed in a cross shape, and the surface of the soundboard located on the outer side of the bridge type sound beam is divided into four resonance areas; the groove transversely penetrates through the bridge type sound beam in the horizontal direction and is vertical to the bridge type sound beam in the length direction of the groove; 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 annular integral sound beam in piano

Technical Field

The utility model relates to a piano, concretely relates to take soundboard of integral sound roof beam of annular 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 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 treble region accounting for about one-half octave, the midrange region accounting for about four octaves, and the bass region accounting for about two and a half octaves.

The problems common to conventional pianos are: when a piano pronounces, a soundboard of the piano has inherent resonant frequency, and after the soundboard exceeds a certain range of a resonant frequency area, a high pitch area is not bright, and a low pitch area is not mellow. Especially, the tone quality of the bass region has been a short board of a piano all the time, and even limits the creation width of a composer. The main reason is that the existing piano soundboard can not satisfy the good wide-band vibration from the high-pitch area to the low-pitch area, namely can not adapt to the wide frequency variation resonance and vibration of the high-pitch area, the middle-pitch area and the low-pitch area at the same time. In conclusion, the structural design of the soundboard of the traditional 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 take integral sound beam's of annular soundboard in piano.

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

a sound board with a ring-shaped integral sound beam in a piano, wherein the inner wall of the sound board is arranged towards the strings of the piano;

a bridge type sound beam is erected on the outer wall of the sound board, and the bridge type sound beam is annularly erected in the center of the outer wall of the sound board;

four grooves are further formed in the outer wall of the sound board, the grooves are arranged in a cross shape by taking the center of the surface of the sound board as a reference, and the surface of the sound board positioned on the outer side of the bridge type sound beam is divided into four resonance areas; each groove transversely penetrates through the bridge type sound beam in the horizontal direction and is vertical to the bridge type sound beam in the length direction of the groove;

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 bridge type sound beam 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 bottom of the bridge type sound beam is provided with the bridge opening, the bridge opening penetrates in the width direction of the bridge type sound beam, and the opening below the bridge opening corresponds to the groove.

Borrow this design, through establishing the sound beam more be favorable to transmitting the vibration through the sound tunnel on the sound tunnel to more be favorable to promoting the vibration response rate of soundboard.

4. In the above scheme, when the soundboard is horizontal, the up-and-down center line of the bridge type sound beam overlaps with the up-and-down center line of the soundboard, so as to improve the sound quality and the tone color.

5. 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 to be in the radial arrangement with the center of soundboard face as the benchmark.

6. In the above-mentioned scheme, be equipped with many radiation sound roof beams respectively in each resonance region of soundboard, each radiation sound roof beam parallel arrangement in the same resonance region, and at least 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 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 integral sound beam in a piano, which is provided with a bridge type sound beam, wherein the sound beam is annularly erected in the center of the outer wall of the soundboard; four grooves are further formed in the outer wall of the sound board, the grooves are distributed in a cross shape, and the surface of the sound board located on the outer side of the bridge type sound beam is divided into four resonance areas; the groove transversely penetrates through the bridge type sound beam in the horizontal direction and is vertical to the bridge type sound beam in the length direction of the groove; 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 possess 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 is characterized in that: firstly, erecting a bridge type sound beam 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 bridge type sound roof beam on the outer wall of soundboard, because bass high pitch amplitude is big relatively, the frequency is low, and 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 the cross slot has been seted up on the soundboard outer wall, and 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 designs the sound beam into a bridge type sound beam, and especially designs a bridge opening (a gap) on one side of the sound beam, so that the sound beam is like a bridge arch structure. When the sound beam is erected on the sound tunnel, vibration can be transmitted through the sound tunnel more favorably, and resonance and quick vibration response of the sound plate are more favorably realized.

4. The utility model discloses a bridge type sound roof beam and cross slot's design, it is regional to mark off four sympathetic response 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 improve the back 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, a string wave volume in addition, in addition a percussion wave volume, six sound wave volumes total. 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 wave quantity directly affects the timbre, penetration, and volume of the musical 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 an upright piano soundboard according to an 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 bridge opening; 4. a bridge-type sound beam; 5. a radiating 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 various modifications and changes can be made without departing from the spirit and scope of the invention, as will be apparent to those skilled in the art after understanding the embodiments 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 terms 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 9, the inner wall of the sound board 1 is arranged towards the strings of the piano.

A bridge type sound beam 4 is erected on the outer wall of the soundboard 1, and the bridge type sound beam 4 is annularly erected in the center of the outer wall of the soundboard 1.

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 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 zone is arranged at a position close to the center, so that low-frequency vibration with lower frequency and larger amplitude can generate more muddy and smooth bass in the bass zone 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 bridge type sound beam 4 is positioned in the bass region, and can further improve the load of the middle area of the sound board 1.

Through set up bridge type sound roof beam 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 the important function 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.

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 the surface of the sound board 1 located on the outer side of the bridge-type sound beam 4 is further divided into four resonance areas 6; each groove 2 horizontally crosses the bridge sound beam 4, and is perpendicular to the bridge sound beam 4 in the longitudinal direction of the groove 2.

Wherein, the slot 2 is concavely arranged on the outer wall of the soundboard 1 to form a sound tunnel.

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 marking off 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 bottom of the bridge-type sound beam 4 is provided with a bridge opening 3, the bridge opening 3 is arranged in the width direction of the bridge-type sound beam 4 in a penetrating mode, and the opening below the bridge opening 3 corresponds to the groove 2. The sound beam is designed into a bridge type sound beam 4 structure, and particularly, a bridge opening 3 (a gap) is designed at one side of the sound beam, so that the bridge type sound beam 4 is like a bridge arch structure. When such a bridge-type sound beam 4 is erected on the sound tunnel, it is more favorable to transmit vibrations through the sound tunnel to be more favorable to resonance and quick vibration response of the tone plate 1.

Preferably, as shown in fig. 2, the tone plate 1 is further provided with a plurality of radiation sound beams 5, and the radiation sound 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 thickness of the inner end of the radiant sound beam 5 is larger than that of the outer end. With this design, it is possible to realize reinforcement of the center region of the tone plate 1.

Preferably, when the sound board 1 is horizontal, the center line of the bridge-type sound beam 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, and the structure thereof is not intended to limit the protection scope of the present invention, and soundboards of other similar structures should be covered by the technical features of the present invention if they are used.

2. In the above embodiment, the bridge 3 is disposed on the bridge-type sound beam 4, but the present invention is not limited thereto, and the bridge 3 may not be disposed, or other structures similar to the bridge 3 may be disposed to facilitate the transmission of the vibration through the sound tunnel, which is easily understood and accepted by those skilled in the art.

3. In the above embodiment, the number of the bridge-type sound beams 4 is not limited to one set, and may be a plurality of sets arranged side by side or other designs contributing to the center load reinforcement of the soundboard 1, as will be readily understood and accepted by those skilled in the art.

4. In the above embodiment, the groove 2 is an arc-shaped groove. 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 bridge type sound beam 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 highlight out to current piano high pitch area, and the not enough problem of bass district muddy and mellow has carried out deep discussion and research to the design and the vocal mechanism of piano, has found out the not good leading cause of tone quality of current piano high pitch area and bass district because the soundboard design unreasonable causes. 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 in the angle of vibration, sympathetic response, sound production, and the bass district 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 register 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 (9)

1. The utility model provides a take integral sound roof beam's of annular soundboard in piano which characterized in that:

the inner wall of the sound board (1) is arranged towards the strings of the piano;

a bridge type sound beam (4) is erected on the outer wall of the sound board (1), and the bridge type sound beam (4) is annular and is erected in the center of the outer wall of the sound board (1);

four grooves (2) are further formed in the outer wall of the soundboard (1), the grooves (2) are arranged in a cross shape by taking the center of the soundboard (1) in the horizontal direction as a reference, and then the surface of the soundboard (1) located on the outer side of the bridge type sound beam (4) is divided into four resonance areas (6); each groove (2) horizontally crosses the bridge type sound beam (4) and is vertical to the bridge type sound beam (4) along the length direction of the groove (2);

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

2. The tone plate with ring-shaped integral tone beam in a piano of 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 bridge type sound beam (4) is located in the bass region.

3. The tone plate with ring-shaped integral tone beam in a piano of claim 1, characterized in that: the bottom of bridge type sound roof beam (4) is equipped with bridge opening (3), and this bridge opening (3) runs through the setting in the width direction of bridge type sound roof beam (4), and the below of bridge opening (3) is uncovered to correspond slot (2).

4. The soundboard with annular integral tone beam in piano of claim 1, wherein: when the sound board (1) is horizontal, the center line of the bridge type sound beam (4) in the vertical direction is overlapped with the center line of the sound board (1) in the vertical direction.

5. The soundboard with annular integral tone beam in piano of 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.

6. The tone plate with ring-shaped integral tone beam in a piano of 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.

7. The soundboard with annular integrated tone beam in a piano of claim 5 or 6, wherein: the thickness of the inner end of the radiation sound beam (5) is larger than that of the outer end.

8. The tone plate with ring-shaped integral tone beam in a piano of claim 1, characterized in that: each groove (2) is an arc-shaped groove.

9. The soundboard with annular integral tone beam in piano of claim 1, wherein: 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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