Synergy piano
Technical field
The utility model relates to a kind of musical instrument, i.e. a kind of synergy piano.
Background technology
Piano drives hammer to impact string to send sound equipment by pressing key.Wherein, string is to strain on base plate by the qin axle at two ends, and base plate is made of cast iron more, also claims cast iron plate or steel plate.Between string and base plate, being provided with section is leg-of-mutton bridge, triangle one side under, upward, string is rested the head in the above at an angle, so bridge also claims capotasto.I find by great many of experiments, and when the height of bridge and hammer are raised to extreme higher position, the string that hits of hammer is put the vertical range of string and descended point to the ratio of the vertical range of backplate surface most with hammer, and piano sound is had to obvious impact.At present, the bridge height of upright piano be take can support string as degree, all, below 15mm, take 10mm as common.And hammer is to the distance of string and hammer to base plate ratio of distances constant, and the relation between piano sound effect, not yet drawing attention, its correlation parameter is mainly determined by the size of each link, there is no according to acoustics and determines that the theory of size proposes.Therefore, inquire into the acoustic relation of said structure data and piano, for the acoustics that improves piano, have great importance.In addition, the sound equipment of existing piano is more single, if can be when keeping piano sound characteristic, increase the sound equipment factor of other musical instruments, particularly drawing musical instrument to combine on the piano bullet traditional with motherland, produce the effect of instrumental ensembling, should be one of direction of piano development.
Summary of the invention
The purpose of this utility model is to provide the better piano of a kind of acoustics.
Another object of the present utility model is to provide and a kind ofly can keeps piano sound characteristic, can increase again the sound equipment composition that other bullets draw musical instrument, has the piano of instrumental ensembling effect.
Above-mentioned purpose is realized by following technical scheme: develop a kind of high tone quality upright piano, comprise base plate, bridge, peg, string and key, be characterized in: the height A >=20mm of said bridge.
Height A=20-the 50mm of said bridge.
Said hammer is to the distance C and the ratio of hammer to the distance B of base plate, i.e. C:B=0.616-0.620:1 of string.
Said hammer is to the distance C and the ratio of hammer to the distance B of base plate, i.e. C:B==0.618 of string.
The accordatura depression bar that downward stretching, extension is installed below the key of said piano, the lower end of depression bar is accordatura plate, and the below of accordatura plate draws string relative with bullet, and bullet draws being provided with bullet and drawing the bullet drawstring that string is perpendicular or intersect of string below.
Described bullet draws string to comprise three kinds of high pitchs, middle pitch, bass, and every kind minimum one, each bullet draws string all relative with the accordatura plate of accordatura depression bar below a key; Described bullet drawstring shape is as travelling belt, and two ends have the power wheel being arranged in piano frame to support, one of them power wheel and the transmission of actuating unit phase; Described bullet drawstring is to draw vocal cores or/and be to play vocal cores or/and tone dialing band, wherein: draw vocal cores to have many to be coiled in two silk threads on power wheel, bullet contacts with drawing vocal cores while drawing string to be pressed down by accordatura plate; Described bullet vocal cores (19) has the soft lath being looped around on two power wheels, and lath outside is provided with a plurality of overhanging elastic claws, and bullet contacts with elastic claw while drawing string to be pressed down by accordatura plate; Described tone dialing is with the soft lath being looped around on two power wheels, and lath outside is provided with overhanging moving tooth, can streak each bullet and draw string when moving tooth moves.
The power wheel of said tone dialing band and draw vocal cores or play between the power wheel of vocal cores and be provided with clutch coupling.
Said actuating unit is toggle, and its small end is hinged in crossbeam, and crossbeam below is provided with the slide bar of setting, and slide bar matches with the sliding sleeve in frame, and on slide bar, cover has retracing spring, crossbeam to be positioned at the below of each key.
Said actuating unit is toggle, and draw mutually with pedal the lower end of its connecting rod.
Said actuating unit is micromachine.
The beneficial effects of the utility model are: by the parameter of optimizing structure, piano sound effect significantly strengthens.In addition set up multiple bullet and draw parts, when keeping piano sound characteristic, dissolve in multiple different music factor, produce the effect of instrumental ensembling sympathetic response, make traditional piano produce revolutionary progress.
Accompanying drawing explanation
Fig. 1 is the partial front elevation view of the first embodiment;
Fig. 2 is the partial front elevation view of the second embodiment;
Fig. 3 is the partial front elevation view of the third embodiment;
Fig. 4 is the partial top view of the third embodiment;
Fig. 5 is the front view of the parts key of the third embodiment;
Fig. 6 is the left view of the parts key of the third embodiment;
Fig. 7 is the parts bullet drawstring of the third embodiment and the front view of gearing thereof;
Fig. 8 is the parts bullet drawstring of the third embodiment and the vertical view of gearing thereof;
Fig. 9 is the parts bullet drawstring of the 4th kind of embodiment and the front view of gearing thereof;
Figure 10 is the parts bullet drawstring of the 5th kind of embodiment and the vertical view that bullet draws string;
Figure 11 is the parts bullet drawstring of the 6th kind of embodiment and the vertical view that bullet draws string.
Visible in figure: base plate 1, string 2, bridge 3, peg 4, hammer 5, key 6, accordatura depression bar 7, bullet draws string 8, connecting rod 9, driving gear 10, plays drawstring 11, accordatura plate 12, crossbeam 13, slide bar 14, sliding sleeve 15, retracing spring 16, power wheel 17, draw vocal cores 18, play vocal cores 19, elastic claw 20, pedal 21, micromachine 22, tone dialing band 23, moving tooth 24, clutch coupling 25.
Embodiment
The total design of the utility model is the height that improves existing bridge, increases the parts that bullet draws musical instrument, improves the acoustics of piano.Below in conjunction with accompanying drawing, introduce six kinds of embodiment:
The first embodiment: Fig. 1 is the partial structurtes sketch of upright piano.Visible in figure: base plate 1 has drawn string 2 by peg 4 above, has a bridge 3 between string 2 and base plate 1, and the section of bridge 3 is triangular in shape, and a leg-of-mutton bottom surface is seated the upper surface of base plate 1, and leg-of-mutton upper angle is pressed with string 2.The bottom surface that the triangle of take engages with base plate 1 is benchmark, is the height of bridge 3 to the vertical range at angle on triangle.Experimental results demonstrate: during the height=A >=20mm of bridge 3, namely than the height 10-15mm of existing piano bridge, improve 5-10mm, acoustics is significantly improved.The height of bridge 3, between 20-60mm, all can be received the acoustics of optimization.
The second embodiment: as shown in Figure 2, hammer 5, to the distance B and the ratio of hammer 5 to the distance C of string 2 of base plate 1, has a certain impact to the acoustics tool of piano.Experimental results demonstrate: when C:B=0.616-0.620:1, acoustics has general cognizable improvement.At this interval hammer, to the distance B of base plate, to the optimal values of the ratio of the distance C of string, infinitely approach famous golden section point with hammer, i.e. C:B=0.618:1, its acoustics is optimized the most.
The third embodiment: Fig. 3 Fig. 4 has introduced a kind of Novel piano that bullet draws parts of setting up on existing upright piano.Visible in figure, piano also has base plate 1, string 2 and bridge 3, and key 6 tops are provided with hammer 5 parts such as grade, and this is the same with common piano.Different: the accordatura depression bar 7 that downward stretching, extension is installed below the key 6 of piano.Visible in conjunction with Fig. 5 Fig. 6, the lower end of accordatura depression bar 7 is provided with accordatura plate 12.Below each accordatura plate 12, all draw string 8 relative with a bullet.Bullet draws being provided with below of string 8 to play drawstring 11, and the bearing of trend that plays drawstring 11 and bullet draw string 8 perpendicular or have and intersect.The bullet here draws string 8 to have three kinds of high pitchs, middle pitch, bass, and every kind minimum one, in figure, draw three, represent that respectively high, normal, basic three bullets draw string 8.Each bullet draws string 8 all relative with the accordatura plate 12 of accordatura depression bar 7 below the key 6 in an identical range of sound.Bullet drawstring 11 shapes are here as travelling belt, and two ends have power wheel 17 to support, and the rotating shaft of power wheel 17 is arranged in the frame of piano, one of them power wheel 17 and the transmission of actuating unit phase.Certainly, the form of gear train has multiple, and the actuating unit exemplifying is here a kind of toggle.As shown in the figure, the upper end of connecting rod 9 is hinged in crossbeam 13, and crossbeam 13 belows are provided with the slide bar 14 of setting, and slide bar 14 is slidably matched with the sliding sleeve 15 in piano frame, on slide bar 14 cover have retracing spring 15, crossbeam 13 be positioned at each key 6 below.The bullet drawstring 11 here comprises and draws vocal cores 18 and play vocal cores 19.Drawstring 18 is wherein many and is coiled in two filaments on power wheel 17, and its effect is equivalent to the bowstring of urheen, and bullet draws string 8 to press down Shi Keyu through accordatura plate 12 to draw vocal cores 18 to contact.Playing vocal cores 19 has the soft lath being looped around on two power wheels 17, and lath outside is provided with a plurality of overhanging elastic claws 20, and bullet draws string 8 can contact with elastic claw 20 when accordatura plate 12 presses down.
During work, when player is by next key 6, key 6 will be oppressed the anchorage force that crossbeam 13 and slide bar 14 overcome retracing spring 16 and be fallen along sliding sleeve 15, crossbeam 13 connecting rod 9 below will promote driving gear 10 and rotate, and driving power wheel 17 to rotate by driving gear 10, power wheel 17 is with drawstring 11 translations of moving.Meanwhile, the accordatura plate 12 of accordatura depression bar 7 below of key 6 and end is descending, and identical one, the range of sound of compressing and this key 6 or one group of bullet draw string 8 whereabouts, make bullet draw string 8 to contact with the bullet drawstring 11 of translation.Wherein, when drawing string 8 and draw vocal cores 18 to contact, can send by bullet the sound equipment of bowed instrument.When bullet draws string 8 and plays elastic claw 20 on vocal cores 19 and contact, elastic claw 20 will hit successively bullet and draw string 8, and sends the sound equipment of playing.When key 6 lifts, crossbeam 13 moves under the promotion of retracing spring 16, prepares next process.
While experiment showed, this piano performance, the effect of existing piano performance, has again bullet to draw dubbing of musical instrument, and it is very unique that it instrumental ensembles effect.
The 4th kind of embodiment: this piano is also to set up bullet to draw parts on existing upright piano, as bullet draws string 8 and plays drawstring 11, its actuating unit is to be also a kind of toggle, with the third embodiment difference as shown in Figure 9: its connecting rod 9 be from the excentric shaft of driving gear 10 to downward-extension, draw mutually with pedal 21 its lower end.During use, operator's foot pedal 21, can be with drawstring 11 translations of moving, and draws string 8 to carry out frictional impact with bullet, sends the sound equipment that bullet draws musical instrument.Obviously, this structure can be omitted the parts such as crossbeam, slide bar, sliding sleeve and retracing spring in the third embodiment.Structure is greatly simplified, and can alleviate exerting oneself of button.But also can strengthen the burden of operator foot, the coordination ability of operator's trick is also had to certain requirement simultaneously.But, this problem is also not difficult to solve, because the operator's of existing piano right crus of diaphragm need to be controlled three pedals below piano, and left foot many places are in idle state, thereby the pedal 21 of the crank connecting link that newly increases of available left foot operation.In addition, in order to reduce the requirement to operator's hand-foot coordination, can strengthen the driving gear of toggle and the ratio of gear between power wheel 17, even if the frequency of left foot action is very slow, plays drawstring 11 and also can continually turn round.
The 5th kind of embodiment: as shown in figure 10, the actuating unit that plays drawstring 11 is a micromachine 22, can be with the lasting rotation of drawstring 11 of moving, thereby has save manpower burden, plays convenient.
The 6th kind of embodiment: as shown in figure 11, play drawstring 11 except drawing vocal cores 18 and bullet vocal cores 19, also have a kind of tone dialing band 23.Tone dialing band 23 is similar with bullet vocal cores 19, also has the soft lath being looped around on two power wheels 17.Difference is: lath outside is provided with a plurality of overhanging moving teeth 24, and the quantity of moving tooth 24 is less than elastic claw 20, and Length Ratio elastic claw 20 is longer, even if bullet draws string 8 in a high position, also can be arrived by 24 strokes of moving teeth.Moving tooth 24 streaks each bullet and draws string 8, can send and be similar to the sound equipment that seven-stringed plucked instrument in some ways similar to the zither is drawn string.Because the sound equipment of this stroke of string in performance can not be commonly used, thereby the quantity of moving tooth 24 seldom, and interval is larger.In addition, the power wheel of tone dialing band 23 and draw vocal cores 18 or play between the power wheel 17 of vocal cores 19 and be provided with clutch coupling 25, not the used time, can cut off contact, and tone dialing band 23 is with drawing vocal cores 18 or playing vocal cores 19 motions.In the time of need to drawing string, controlled clutch 25 engages it, can send the acoustics of drawing string.This clutch coupling 25 can adopt fork type, and its fork handle is controlled by operator's knee, also more convenient.As shown in figure 11, it is branched that the bullet coordinating with this tone dialing band 23 draws string 8 preferably to have, and the effect of paddling can be better.