CN102610214B - Soundboard structure for digital grand piano - Google Patents
Soundboard structure for digital grand piano Download PDFInfo
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- CN102610214B CN102610214B CN 201210076780 CN201210076780A CN102610214B CN 102610214 B CN102610214 B CN 102610214B CN 201210076780 CN201210076780 CN 201210076780 CN 201210076780 A CN201210076780 A CN 201210076780A CN 102610214 B CN102610214 B CN 102610214B
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Abstract
The invention discloses a soundboard structure for a digital grand piano, and belongs to the field of musical instrument manufacture. A sound absorption material (7) is adhered to the face, which faces a bottom plate (9), of a soundboard (6), and a damping material (5) is adhered to the other face of the soundboard (6). A steel wire (4) is arranged on the damping material (5), and faces the same direction as a skeleton (1). One end of the steel wire (4) is connected with a tightening mechanism (11) which is connected to a curved wall bar (16), and the other end of the steel wire (4) is fixed on a soundboard frame (12). Glass (3) is arranged on the steel wire (4). According to the invention, the sound absorption material has the function of suppressing harmonic peaks. By the damping material, sound coloring can be alleviated and even eliminated. Due to the arrangement of the steel wire, the shortcomings of residual vibration, resonance, even sympathetic vibration, melody distortion and the like caused by the weak material strength of the soundboard which is thin and large in area can be overcome. The digital grand piano with the soundboard structure has simple and generous appearance which is the same as that of the conventional piano, and also has tone color which is as clear and pure as that of the conventional piano.
Description
Technical field
The present invention relates to a kind of digital piano, relate in particular to a kind of digital grand piano soundboard structure.Belong to musical instrument and make the field.
Background technology
Digital piano in shape, it is identical with traditional piano that people like, be settled out the boundary of " qin people unification " to follow piano 300 years development, reach the unification of emotion and mental state between musical instrument and player, this has not only reflected the pursuit of contemporary people on sound equipment is aesthetic, has also sketched the contours of the relation of mutually promoting between musical instrument and player.the needs that satisfy its tune on the profile of tradition piano form, the tune of digital piano is fully different from traditional piano, one is the string vibration sounding of machinery, one is electronic loudspeaker vibration sounding, satisfy both tunes, how can needed profile be identical? therefore, it is identical with traditional piano that digital piano is accomplished in shape, this is only a likeness in form, show range and the musical note that enriches expressive force as traditional piano, digital piano need to determine tone color, tonequality, on the soundboard of sound equipment, by the sounding characteristics of self, should distinguish to some extent with traditional piano on vocal structure, and on sounding effect with the nondistinctive improvement of traditional piano.
No matter the tradition piano is the huge grand piano of body or petite upright piano, and its sounding is all from soundboard structure.The basic comprising of soundboard structure is all similar, by formations such as string row, soundboard, skeleton, iron plate, soundboard frame, string shafts.Soundboard is a large plank that is fixed on the soundboard frame, and high-grade piano is combined into the maple solid wood board, and the universal qin of modern low side is density board usefully.In succession tuning nail of soundboard is close to string, and when the string vibration, soundboard can make the sound wave high-level efficiency be coupled in air, is about to sound and sees through the soundboard structure reflection and enlarge out.Conventional steel string row adopt the mode of double-deck cross arrangement, and low frequency string and medium-high frequency string are arranged in respectively on two planes, and for this reason, the soundboard frame has a curved rib wood of laterally settling in its frame, the soundboard frame is divided into two zones.
The soundboard structure of tradition piano is the string vibration, and sound sends above qin.Digital piano soundboard structure and be to adopt loudspeaker, sound sends below qin.Therefore, traditional piano has the string row, and digital piano does not have the string row, in addition, the external and internal compositions of digital piano, basic identical with traditional piano.On the base plate of digital piano, be fixed wtih loudspeaker, soundboard is still above base plate.The space that forms between base plate and soundboard has consisted of cavity of sound box, and sound is just from sending here.But, this soundboard structure, the sound that directly sends from cavity of sound box sounds the people, obviously can feel from loudspeaker, rather than piano.Therefore this digital piano and traditional piano aspect the musical sound expressive force, differ greatly, in yes can not be accepted.for this reason, prior art is improved, as the Chinese patent notification number: CN1901032 B, the day for announcing: on June 8th, 2011, denomination of invention: " electric keyboard instrument ", it comprises a plurality of playing manipulations, a plurality of vibrating devices, each free drive, to cause each self-excited oscillation, vibrating device is installed on this soundboard, and be spaced apart from each other, and has the characteristic that differs from one another, and signal transmission and output unit, it is in response to being operated of any this playing manipulation at least, this vibrating device is respectively produced respectively the driving signal, and the driving signal that produces of output.Thereby realization has reproduction and the easy tonequality of the naturetone of enough volumes to be reconciled.But, this soundboard structure of prior art, very complicated, adjust difficulty, the soundboard that especially also exists in the face of digital grand piano is thin and area is large, be easy to produce forced vibration and cause sound to dye, may also have remained shock, can empathize, even resonance, make the deficiencies such as melody distortion, prior art does not solve.
Summary of the invention
The objective of the invention is to overcome the digital grand piano soundboard structure of prior art, for realizing the musical expression of traditional piano, the complex structure of institute's employing vibrating device is adjusted difficulty, and the soundboard that especially also exists in the face of digital grand piano is thin and area is large, be easy to produce forced vibration and cause sound to dye, even resonance, make the deficiencies such as melody distortion, provides a kind of simple in structure, easy to process, and the lower a kind of digital grand piano soundboard structure of cost of manufacture.Its parts are few, and Installation and Debugging are convenient, both satisfied client's fashion, and brief large device reaches the requirement of traditional piano outward appearance fully, can show again range and the musical note that enriches expressive force as traditional piano.
for achieving the above object, the technical solution used in the present invention is: a kind of digital grand piano soundboard structure, comprise skeleton, soundboard, cavity of sound box, base plate, loudspeaker, the soundboard frame, curved rib wood, described soundboard on the face of base plate, be deposited with acoustic absorbant, on the another side of described soundboard, the apposition damping material, on described damping material, and with skeleton in the same way, steel wire is installed, one end of steel wire is connected with tightening mechanism, tightening mechanism is connected on curved rib wood, the other end of steel wire is fixed on soundboard, on described steel wire, laying glass.
Described on glass, settling upper sounding board.
The quantity of described glass is identical with skeleton institute number of partitions.
Described tightening mechanism comprises housing screw, tightening nut, contiguous block, the thread end of described contiguous block passes the hole of curved rib wood, tightening nut is spun on the screw thread of contiguous block, and is close on the hole end surface of curved rib wood, and described housing screw is fastened on steel wire one end on the contiguous block rectangular end.
Described steel wire is arranged in groups by several.
Described damping material is wrapped in steel wire.
Described acoustic absorbant is super glass wool, mineral cotton, fiber gum sprayed cotton, vacuum cotton, foam sponge.
Described damping material is high flexibility cotton pad, malthoid, rubber.
Compared with prior art, beneficial effect of the present invention is: 1. soundboard on the face of base plate, be deposited with acoustic absorbant, play the harmonic peak effect that suppresses.Therefore 2. on the another side of soundboard, the apposition damping material is being laid glass on damping material, has blocked the propagation of acoustic energy to casing, can alleviate even to eliminate sound and dye.3. on the another side of soundboard, steel wire is installed, steel wire is strained on curved rib wood by tightening mechanism, and corresponding in the same way with skeleton, and arrange in groups, it is poor can to eliminate because of the large strength of materials that causes of the thin area of soundboard, and causes remained shock, sympathetic response, even resonance, make deficiency, especially steel wire reinforcement tension force and the soundboard upper skeleton formation precompressions such as melody distortion, reach soundboard integral body and be in for a long time optimum Working.4. on glass, settle upper sounding board, obtaining effect attractive in appearance.5. the present invention by above technical scheme, not only makes the outward appearance of digital piano satisfy client's fashion, and brief large device reaches the requirement of traditional piano outward appearance fully, and tone color and traditional piano similar, reach the clear and purity of traditional piano pronunciation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is section partial enlarged drawing of the present invention.
Fig. 3 is inner upward view of the present invention.
Fig. 4 is tightening mechanism schematic diagram of the present invention.
Fig. 5 is soundboard of the present invention and acoustic absorbant cut-open view.
In figure: skeleton 1, upper sounding board 2, glass 3, steel wire 4, damping material 5, soundboard 6, acoustic absorbant 7, cavity of sound box 8, base plate 9, loudspeaker 10, tightening mechanism 11, soundboard frame 12, housing screw 13, tightening nut 14, contiguous block 15, curved rib wood 16.
Embodiment
The present invention will be further described below in conjunction with description of drawings and embodiment, but be not the restriction to its protection domain.
referring to Fig. 1 to Fig. 5, a kind of digital grand piano soundboard structure of the present invention, comprise skeleton 1, soundboard 6, cavity of sound box 8, base plate 9, loudspeaker 10, soundboard frame 12, curved rib wood 16, described soundboard 6 on the face of base plate 9, be deposited with acoustic absorbant 7, on the another side of described soundboard 6, apposition damping material 5, on described damping material 5, and with skeleton 1 in the same way, steel wire 4 is installed, one end of steel wire 4 is connected with tightening mechanism 11, tightening mechanism 11 is connected on curved rib wood 16, the other end of steel wire 4 is fixed on soundboard frame 12, on described steel wire 4, laying glass 3.
On described glass 3, settling upper sounding board 2.
The quantity of described glass 3 is identical with 1 number of partitions of skeleton.
Described tightening mechanism 11 comprises housing screw 13, tightening nut 14, contiguous block 15, the thread end of described contiguous block 15 passes the hole of curved rib wood 16, tightening nut 14 is spun on the screw thread of contiguous block 15, and be close on the hole end surface of curved rib wood 16, described housing screw 13 is fastened on steel wire 4 one ends on contiguous block 15 rectangular ends.
Described steel wire 4 is arranged in groups by several.
Described damping material 5 is wrapped in steel wire 4.
Described acoustic absorbant 7 is resistance sound cotton, super glass wool, mineral cotton, fiber gum sprayed cotton, vacuum cotton, foam sponge.
Described damping material 5 is high density elasticity cotton pad, malthoid, rubber.
Referring to Fig. 1, the profile of digital grand piano of the present invention and traditional piano are as good as, and make outward appearance satisfy client's fashion, and brief large device reaches the requirement of traditional piano outward appearance fully; The inside of digital grand piano of the present invention has not had the string of traditional piano to be listed as, and has kept skeleton 1, curved rib wood 16 etc.; Increased upper sounding board 2 newly, glass 3, steel wire 4 etc.
Referring to Fig. 2, section partial enlarged drawing of the present invention, the cavity of sound box 8 that forms between soundboard 6 and base plate 9.As desirable cavity of sound box 8, during its work, except loudspeaker 10 vibration soundings, its periphery should not be forced in the vibration of loudspeaker 10 as soundboard 6, dyes or resonates otherwise can produce sound.Because loudspeaker 10 is made typing by factory, therefore in cavity of sound box 8, the design of soundboard 6 becomes the determinative of the musical expression that affects digital piano.
Below soundboard 6, except mounting edge, all be deposited with one deck acoustic absorbant 7.The first-selected resistance sounds that adopt of acoustic absorbant 7 are cotton, or more satisfactory super glass wool, mineral cotton, fiber gum sprayed cotton, and economic vacuum cotton, foam sponge etc.The thickness of acoustic absorbant 7 is distinguished to some extent according to selected material between 20 to 35 millimeters.It is that the resistance sound is cotton that the present embodiment is selected, and thickness is 20 millimeters.
Above soundboard 6, apposition damping material 5.The damping material 5 that the present embodiment adopts is high density elasticity cotton pad, and thickness is 2 times of acoustic absorbant 7.In addition, malthoid, rubber are also selectable damping materials 5, and its advantage is that price comparison is cheap.
On the damping material 5 of soundboard 6, steel wire 4 is installed, steel wire 4 is strained on curved rib wood 16 by tightening mechanism 11, and corresponding in the same way with skeleton 1, and arrange in groups, it is poor can to eliminate because of the large strength of materials that causes of the thin area of soundboard, and causes remained shock, sympathetic response, even resonance, make the deficiencies such as melody distortion, especially steel wire 4 strengthens tension force and soundboard upper skeleton formation precompression, reaches soundboard integral body and is in for a long time optimum Working.
In fact, soundboard 6 and upper sounding board 2, and the damping material 5 of filling therebetween, steel wire 4, glass 3 etc. have consisted of the double wall audio amplifier wall of damping capacity, better effects if, have blocked the route of transmission of acoustic energy to casing, even eliminate sound and dye very effective alleviating.
Referring to Fig. 3, the same with traditional piano, a curved rib wood 16 of laterally settling is arranged in the frame of soundboard frame 12, the soundboard frame is divided into two zones, tightening mechanism 11 1 ends are connected with steel wire 4, and the other end is arranged on curved rib wood 16.
Referring to Fig. 4, tightening mechanism 11 schematic diagram, tightening mechanism 11 comprise housing screw 13, tightening nut 14, contiguous block 15.Contiguous block 15 is rectangle with steel wire 4 links, removes a part in the middle of rectangle, is furnished with housing screw 13 with fixing steel wire 4.The other end of contiguous block 15 is straight thread, after passing the rectangular opening on curved rib wood 16, mixes tightening nut 14.After the other end of steel wire 4 was fixing on soundboard 6, rotation tightening nut 14 can taut wire 4, produces certain prestress.
Referring to Fig. 5, acoustic absorbant 7 be sticky deposited in soundboard 6 below.
Other parts of the present invention such as skeleton 1 special formed, size and mounting means are same as the prior art, and this paper does not give unnecessary details.
Claims (8)
1. digital grand piano soundboard structure, comprise skeleton (1), soundboard (6), cavity of sound box (8), base plate (9), loudspeaker (10), soundboard frame (12), curved rib wood (16), it is characterized in that: described soundboard (6) on the face of base plate (9), be deposited with acoustic absorbant (7), on the another side of described soundboard (6), apposition damping material (5), on described damping material (5), and with skeleton (1) in the same way, steel wire (4) is installed, one end of steel wire (4) is connected with tightening mechanism (11), tightening mechanism (11) is connected on curved rib wood (16), the other end of steel wire (4) is fixed on soundboard frame (12), on described steel wire (4), laying glass (3).
2. a kind of digital grand piano soundboard structure according to claim 1, is characterized in that: on described glass (3), settling upper sounding board (2).
3. a kind of digital grand piano soundboard structure according to claim 1 is characterized in that: the same skeleton of quantity (1) the institute number of partitions of described glass (3) is identical.
4. a kind of digital grand piano soundboard structure according to claim 1, it is characterized in that: described tightening mechanism (11) comprises housing screw (13), tightening nut (14), contiguous block (15), the thread end of described contiguous block (15) passes the hole of curved rib wood (16), tightening nut (14) is spun on the screw thread of contiguous block (15), and be close on the hole end surface of curved rib wood (16), described housing screw (13) is fastened on steel wire (4) one ends on contiguous block (15) rectangular end.
5. a kind of digital grand piano soundboard structure according to claim 1 is characterized in that: described steel wire (4) is arranged in groups by several.
6. a kind of digital grand piano soundboard structure according to claim 1, it is characterized in that: described damping material (5) is wrapped in steel wire (4).
7. a kind of digital grand piano soundboard structure according to claim 1 is characterized in that: described acoustic absorbant (7) is resistance sound cotton, super glass wool, mineral cotton, fiber gum sprayed cotton, vacuum cotton, foam sponge.
8. a kind of digital grand piano soundboard structure according to claim 1 is characterized in that: described damping material (5) is high density elasticity cotton pad, malthoid, rubber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210076780 CN102610214B (en) | 2012-03-22 | 2012-03-22 | Soundboard structure for digital grand piano |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210076780 CN102610214B (en) | 2012-03-22 | 2012-03-22 | Soundboard structure for digital grand piano |
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| CN102610214A CN102610214A (en) | 2012-07-25 |
| CN102610214B true CN102610214B (en) | 2013-06-05 |
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| CN 201210076780 Active CN102610214B (en) | 2012-03-22 | 2012-03-22 | Soundboard structure for digital grand piano |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6442201B2 (en) * | 2014-09-08 | 2018-12-19 | 株式会社河合楽器製作所 | Electronic musical instruments |
| CN106683641A (en) * | 2017-01-10 | 2017-05-17 | 佳木斯大学 | Automatic piano adjusting device for vocal music performance and adjusting method of automatic piano adjusting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2044093U (en) * | 1989-01-12 | 1989-09-06 | 周伶 | Frequency demultiplication resonance sound board of piano |
| CN201465530U (en) * | 2009-06-20 | 2010-05-12 | 张洪新 | Piano sound board skeleton frame and sound frame having same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6720489B2 (en) * | 2002-06-10 | 2004-04-13 | Daniell Revenaugh | Piano muter |
| JP4460505B2 (en) * | 2005-08-08 | 2010-05-12 | ヤマハ株式会社 | Electronic keyboard instrument |
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- 2012-03-22 CN CN 201210076780 patent/CN102610214B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2044093U (en) * | 1989-01-12 | 1989-09-06 | 周伶 | Frequency demultiplication resonance sound board of piano |
| CN201465530U (en) * | 2009-06-20 | 2010-05-12 | 张洪新 | Piano sound board skeleton frame and sound frame having same |
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| CN102610214A (en) | 2012-07-25 |
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