CN102610214A - Soundboard structure for digital grand piano - Google Patents
Soundboard structure for digital grand piano Download PDFInfo
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- CN102610214A CN102610214A CN2012100767809A CN201210076780A CN102610214A CN 102610214 A CN102610214 A CN 102610214A CN 2012100767809 A CN2012100767809 A CN 2012100767809A CN 201210076780 A CN201210076780 A CN 201210076780A CN 102610214 A CN102610214 A CN 102610214A
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- soundboard
- steel wire
- grand piano
- digital
- damping material
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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 the 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 the player.The needs that satisfy its tune on the profile of tradition piano form, and the tune of digital piano is then different fully with traditional piano, and one is the string vibration sounding of machinery; One is electronic loudspeaker vibration sounding; Then satisfying the two tune, how can needed profile be identical? Therefore, digital piano is accomplished identical with traditional piano in shape; This only is a likeness in form; Show range and the musical note that enriches expressive force as traditional piano, digital piano then need be on the soundboard of decision tone color, tonequality, sound equipment, by the sounding characteristics of self; On vocal structure, should distinguish to some extent with traditional piano, and on the sounding effect with the nondistinctive improvement of traditional piano.
No matter the tradition piano is huge grand piano of body or petite upright piano, and its sounding is all from the soundboard structure.The basic comprising of soundboard structure all is similar, by formations such as string row, soundboard, skeleton, iron plate, soundboard frame, string shafts.Soundboard is a big plank that is fixed on the soundboard frame, and high-grade piano is combined into maple solid wood plate, and modern low side is popularized qin 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 the air, is about to sound and sees through the reflection of soundboard structure and enlarge.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 horizontal curved rib wood of 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, fixing loudspeaker, soundboard is still above base plate.The space that between base plate and soundboard, forms has constituted the audio amplifier inner chamber, and sound is just from sending here.But, this soundboard structure, the sound that directly sends from the audio amplifier inner chamber sounds the people, obviously can feel from loudspeaker, rather than piano.Therefore this digital piano and traditional piano differ greatly aspect the musical sound expressive force, in yes can not accepted by the people.For this reason, prior art is improved, like 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 device; Each free drive, to cause each self-excited oscillation, vibrating device is installed on this soundboard; And be spaced apart from each other, and have the characteristic that differs from one another, and signal transmission and output unit; It is operated in response to the quilt of any this playing manipulation at least, and this vibrating device is respectively produced drive signal respectively, and the drive signal that produced of output.Thereby realization has the reproduction and the easy tonequality of the naturetone of enough volumes to be reconciled.But, this soundboard structure of prior art is very complicated; Adjustment difficulty, the soundboard that especially also exists in the face of digital grand piano is thin and area is big, is easy to produce forced vibration and causes sound to dye; Possibly also have remained shock, can empathize, even resonance; Make deficiencies such as melody distortion, prior art not have to 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; Adjustment difficulty, the soundboard that especially also exists in the face of digital grand piano is thin and area is big, is easy to produce forced vibration and causes sound to dye; Even resonance, making 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 big device reaches the requirement of traditional piano outward appearance fully, can show range and the musical note that enriches expressive force as traditional piano again.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: a kind of digital grand piano soundboard structure comprises skeleton, soundboard, audio amplifier inner chamber, base plate, loudspeaker, soundboard frame, curved rib wood; Described soundboard on the face of base plate, sticking apposition acoustic absorbant is on the another side of described soundboard; The apposition damping material, on the described damping material, and with skeleton in the same way; Steel wire is installed, and an end of steel wire is connected with tightening mechanism, and tightening mechanism is connected on the curved rib wood; The other end of steel wire is fixed on the soundboard, on the described steel wire, is 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 by several in groups.
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 the cotton pad of high flexibility, malthoid, rubber.
Compared with prior art, beneficial effect of the present invention is: 1. soundboard on the face of base plate, sticking apposition acoustic absorbant plays 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 eliminates sound and dye.3. on the another side of soundboard steel wire is installed, steel wire is strained on curved rib wood through tightening mechanism, and corresponding in the same way with skeleton; And arrange in groups, it is poor then can to eliminate because of the thin big strength of materials that causes of area of soundboard, and causes remained shock, sympathetic response; Even resonance; Make deficiencies such as melody distortion, especially steel wire strengthen tension force and soundboard upper skeleton formation precompression, reach soundboard integral body and be in optimum Working for a long time.4. on glass, settle upper sounding board, obtaining effect attractive in appearance.5. the present invention not only makes the outward appearance of digital piano satisfy client's fashion through above technical scheme, and brief big device reaches the requirement of traditional piano outward appearance fully, and tone color and traditional piano are similar, reaches the clear and purity of traditional piano pronunciation.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a section partial enlarged drawing of the present invention.
Fig. 3 is an inner upward view of the present invention.
Fig. 4 is a tightening mechanism synoptic diagram of the present invention.
Fig. 5 is soundboard of the present invention and acoustic absorbant cut-open view.
Among the figure: skeleton 1, upper sounding board 2, glass 3, steel wire 4, damping material 5, soundboard 6, acoustic absorbant 7, audio amplifier inner chamber 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
Below in conjunction with description of drawings and embodiment the present invention is done further description, but be not restriction its protection domain.
Referring to Fig. 1 to Fig. 5, a kind of digital grand piano soundboard structure of the present invention comprises skeleton 1, soundboard 6, audio amplifier inner chamber 8, base plate 9, loudspeaker 10, soundboard frame 12, curved rib wood 16; Described soundboard 6 on the face of base plate 9, sticking apposition acoustic absorbant 7 is on the another side of described soundboard 6; Apposition damping material 5, on the described damping material 5, and with skeleton 1 in the same way; Steel wire 4 is installed, and an end of steel wire 4 is connected with tightening mechanism 11, and tightening mechanism 11 is connected on the curved rib wood 16; The other end of steel wire 4 is fixed on the soundboard frame 12, on the described steel wire 4, is laying glass 3.
On the 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 by several in groups.
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 elastic 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 big 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 audio amplifier inner chamber 8 that forms between soundboard 6 and the base plate 9.As desirable audio amplifier inner chamber 8, except that loudspeaker 10 vibration soundings, its periphery should not receive the vibration under the pressure of loudspeaker 10 like soundboard 6, dyes or resonates otherwise can produce sound during its work.Because loudspeaker 10 is made typing by factory, so the determinative that is designed to the musical expression that influences digital piano of soundboard 6 in the audio amplifier inner chamber 8.
Below the soundboard 6, except that mounting edge, all glue apposition 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 according to the material of being selected for use between 20 to 35 millimeters to some extent.It is that the resistance sound is cotton that present embodiment is selected for use, and thickness is 20 millimeters.
Above the soundboard 6, apposition damping material 5.The damping material 5 that present embodiment adopts is a high density elastic cotton pad, and thickness is 2 times of acoustic absorbant 7.In addition, malthoid, rubber also are 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 through tightening mechanism 11, and corresponding in the same way with skeleton 1; And arrange in groups, it is poor then can to eliminate because of the thin big strength of materials that causes of area of soundboard, and causes remained shock, sympathetic response; Even resonance; Make that deficiencies such as melody distortion, especially steel wire 4 strengthen tension force and the soundboard upper skeleton forms precompression, reach soundboard integral body and be in optimum Working for a long time.
In fact, soundboard 6 and upper sounding board 2, and the damping material 5 of filling therebetween, steel wire 4, glass 3 etc. have constituted the double wall audio amplifier wall of damping capacity, better effects if, have blocked the route of transmission of acoustic energy to casing, to alleviating even eliminating sound and dye very effective.
Referring to Fig. 3, the same with traditional piano, a horizontal curved rib wood 16 of 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 then is installed on the curved rib wood 16.
Referring to Fig. 4, tightening mechanism 11 synoptic diagram, tightening mechanism 11 comprise housing screw 13, tightening nut 14, contiguous block 15.Contiguous block 15 is a rectangle with steel wire 4 links, removes a part in the middle of the rectangle, is furnished with housing screw 13 with fixing steel wire 4.The other end of contiguous block 15 is a straight thread, pass the rectangular opening on the curved rib wood 16 after, mix tightening nut 14.When the other end of steel wire 4 then on the soundboard 6 fixing after, rotation tightening nut 14 can taut wire 4, produces certain prestress.
Referring to Fig. 5, acoustic absorbant 7 sticking applying below soundboard 6.
Other parts of the present invention such as skeleton 1 special formed, size is identical with prior art with mounting means, and this paper does not give unnecessary details.
Claims (8)
1. digital grand piano soundboard structure comprises skeleton (1), soundboard (6), audio amplifier inner chamber (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); Sticking apposition acoustic absorbant (7), on the another side of described soundboard (6), apposition damping material (5); On the described damping material (5); And with skeleton (1) in the same way, steel wire (4) is installed, an end of steel wire (4) is connected with tightening mechanism (11); Tightening mechanism (11) is connected on the curved rib wood (16); The other end of steel wire (4) is fixed on the soundboard frame (12), on the described steel wire (4), is laying glass (3).
2. a kind of digital grand piano soundboard structure according to claim 1 is characterized in that: on the 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 by several in groups.
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 elastic cotton pad, malthoid, rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210076780 CN102610214B (en) | 2012-03-22 | 2012-03-22 | Soundboard structure for digital grand piano |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
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| CN102610214A true CN102610214A (en) | 2012-07-25 |
| CN102610214B CN102610214B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405437A (en) * | 2014-09-08 | 2016-03-16 | 株式会社河合乐器制作所 | Electronic musical instrument |
| 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 (4)
| 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 |
| US20030226439A1 (en) * | 2002-06-10 | 2003-12-11 | Daniell Revenaugh | Piano muter |
| US20090038469A1 (en) * | 2005-08-08 | 2009-02-12 | Yamaha Corporation | Electronic keyboard musical instrument |
| CN201465530U (en) * | 2009-06-20 | 2010-05-12 | 张洪新 | Piano sound board skeleton frame and sound frame having same |
-
2012
- 2012-03-22 CN CN 201210076780 patent/CN102610214B/en active Active
Patent Citations (4)
| 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 |
| US20030226439A1 (en) * | 2002-06-10 | 2003-12-11 | Daniell Revenaugh | Piano muter |
| US20090038469A1 (en) * | 2005-08-08 | 2009-02-12 | Yamaha Corporation | Electronic keyboard musical instrument |
| CN201465530U (en) * | 2009-06-20 | 2010-05-12 | 张洪新 | Piano sound board skeleton frame and sound frame having same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405437A (en) * | 2014-09-08 | 2016-03-16 | 株式会社河合乐器制作所 | Electronic musical instrument |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102610214B (en) | 2013-06-05 |
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