CN86205380U - Popular upright piano - Google Patents

Abstract

The utility model discloses a popular upright piano. The popular upright piano adopts the measures of using simplified structure, easily purchasable material and standard members as well as adding an electronic repeater, to obviously reduce the cost, good for popularization. Meanwhile, the original essential features, property and quality of the piano are kept. Thus, the utility model suitable for music lovers can also be used for teaching and playing. Besides, the popular upright piano can be made into a child's toy piano, suitable as a bedding tool for children who learn to play piano to develop from primary-medium stage to high stage.

Description

Popular upright piano

The utility model belongs to a kind of keyboard instrument, and it is a kind of popular upright piano.

Piano comes out as a kind of keyboard instrument the history of centuries, and it introduces China also with last 100 years.The (see figure 4) because its precise structure complexity, technical maturation, basic structure have been finalized the design.Along with improving constantly of China's material progress, spiritual civilization construction, increasing people begins understanding and acceptance, especially children to this musical instrument of piano, eager chance and the condition of thirsting for having study piano art.But, because piano requires height to making, cost an arm and a leg, also do not popularize in China, and other keyboard instrument such as organ, mellotron, no matter from playing technique, expressive ability, tone color, range all can't be compared with piano, are exactly as general exercise usefulness, also can not find the keyboard instrument that can replace piano.

Task of the present utility model just provides a kind of popular piano, it is not only cheap, can popularize, do not lose original basic characteristic of piano and performance again, make it not only be suitable for general music-lover and use, also be suitable for teaching, accompaniment, play, and be more suitable for exercise first, intermediate stage, as learning pianism by elementary place mat instrument to development advanced stage, can also be as high-grade toy for children musical instrument.

The utility model is achieved in that it equally with original piano also has string row, soundboard, a support, keyboard mechanism, step on lobe mechanism and shell, but in concrete structure design and selection, carried out appropriate simplification and universalness, and set up the electronics amplifier where necessary; Aspect string row, soundboard, support, adopt commercially available dulcimer string to replace piano string in a large number, this not only makes cost reduce greatly.And support force is reduced, thereby correspondingly make weight support frame, volume reduces.Simultaneously, adopt the homeotropic alignment string of a musical instrument, replace the string row of the cross arrangement of original piano, structure, assembling and the debugging of support, soundboard and keyboard mechanism can be simplified, increased reliability.Aspect keyboard mechanism, establish preceding sleeper () and (two), with key head end secondary drop point, solve that the sound mallet hits behind the string because bounce and the problem of double hit (be commonly called as and break the clip-clop plate); Whole sound mallets are contained on the axle, and sound mallet and key be by the direct power transmission of fore-set, thereby simplified the structure of sound mallet system complicated in the former piano; At sound mallet afterbody system sound felt is installed, has been simplified the system system for electrical teaching of former piano.Stepping on lobe mechanism is to control tenuto and off beat, and a pedal is handled transiting rod, tenuto support plate by the simple lever principle, controls sound mallet afterbody system sound felt, reaches the purpose of tenuto.Another pedal can be controlled the tone color contactor of electronics amplifier, reaches the purpose of off beat.

The electronics amplifier is meant to be played or the teaching time spent in conduct the utility model, and volume is less, and the full inadequately weakness of tone color is established.Two acoustic pickups that sensitivity is lower are installed in tone color optimum position, the soundboard back side this moment, and the sound signal on the income soundboard is emitted the sound equipment of expansion through low-frequency amplifier and loudspeaker, and the control of tone color potentiometer and volume switch is arranged.

Popular upright piano has reduced cost significantly because whole or 80 percent employing dulcimer string and standard component saved lot of materials, can reach the level that the general family of China all can purchase; Because designs simplification, part shape is simple, and processing technology is easy to realize that technical difficulty is low that general musical instruments factory all can produce; Adopt metal, plastic construction as much as possible, overcome timber structure weakness yielding, easy to wear, improved reliability and permanance; Because spoilage is low, need not often keep in repair substantially, and easy disassembling, easy, do not need the professional to keep in repair, thereby alleviated user's financial burden.The utility model tone color, performance and existing piano are extremely close, just when playing or impart knowledge to students, smaller on the sensation volume, tone color thickness is poor slightly, but make machinery hit string and electroacoustic combination by the electronics amplifier, can remedy, can satisfy the demand fully on function as popular piano, be the universal musical instrument that people thirst for obtaining.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof:

Fig. 1 is a popular upright piano mechanism side schematic view.

Fig. 2 is support, capotasto, string sign indicating number front schematic view.

Fig. 3 is an electronics amplifier electrical schematic diagram.

In conjunction with the accompanying drawings, popular upright piano is by string row, soundboard, bracket institution, and keyboard mechanism is stepped on lobe mechanism and electronics amplifier and shell and constituted.

String row, soundboard, bracket institution medium-height trestle (3) are the cast iron frameworks of making by twelve-tone equal temperament chord length curve shape, are used for supporting the tension force of the string of a musical instrument, also are the fixing skeletons of the string of a musical instrument, soundboard and shell.Fix a hardwood (25) at support (3) upper level, peg (1) is screwed on the hardwood (25), rotates peg (1) and can adjust string of a musical instrument tightness.Soundboard (2) is a pine thin plate, and there are several vertical stall bars at the back side, makes the soundboard front slightly curved, with screw (28) soundboard (2) is fixed on the support (3).The string row are the string of a musical instrument (21) that a row can pronounce, 75 groups, every group one to three can be all or 80 percent select commercially available dulcimer string for use, the every string of a musical instrument is through on the corresponding peg (1), vertically leads to the fixed pin (22) of support lower end by capotasto (26), string sign indicating number (20).String sign indicating number (20) is divided into three sections, adjusts position and the contact area of string sign indicating number (20) on soundboard (2), makes whole range reach the volume maximum, and tone color the best fixes on the soundboard (2) string sign indicating number (20) is sticking then.Calculated the capotasto curve in the design, can select the best to hit the string point, adjusted peg (1), can make tone reach the most accurate.

Keyboard mechanism comprises keyboard, keyboard frame and sound mallet gear train.Keyboard adopts the key of 75 standard specifications, Bai Jian (10) makes with batten, paste the opaque white color organic glass, black key (9) is made with batten, paste black plastic (perhaps black, Bai Jian) with injection moulding process production, each key tail end is vertically fixed a fore-set (7) with self-tapping screw, should select optimum distance between fore-set (7) and the sound mallet (4).Key is placed on the keyboard, keyboard frame is made of on-deformable timber, and it is made up of sleeper (16), middle sleeper (17), back sleeper (18) before the preceding sleeper () (15), preceding sleeper (two) (14), black key and three vertical wooden frames (27) and the baffle plate (13) of bearing sleeper.In sleeper (17) go up nail middle pin (8) is arranged be the fulcrum that key moves, back sleeper (18) is the drop point of key tail end when static; Sleeper (16) is gone up nail before preceding sleeper () (15) and the black key pin (12) or pin (29), has corresponding hole to cooperate with pin on Bai Jian (10) and the black key (9), leads by pin.Preceding sleeper () (15) is first drop point of Bai Jian (10) head end, and preceding sleeper (two) (14) is second drop point of Bai Jian (10) head end, and it is a little less than preceding sleeper () (15); Sleeper (16) is first drop point of black key (9) head end before the black key, and preceding sleeper () (15) double as is second drop point of black key (9), it a little less than black key before sleeper (16).Adopting the way of key head end two-stage drop point, is to hit on the string of a musical instrument (21) in order to solve sound mallet (4), can be rebounded by fore-set (7) when returning and hits string once more, and form double hit.Adopt the effect of two-stage drop point to be, when key is fallen first drop point, sound mallet (4) leaves fore-set (7) and removes to hit string, this moment, key continued to move down, fore-set (7) then moves in company with on continuing, and when sound mallet (4) hit string and returns, key head end had been fallen second stop, be that the position of fore-set (7) has been brought up to almost the program that is close with the sound mallet that returns, also stop behind sound mallet (4) the contact fore-set (7) with regard to having lost bounce.Sound mallet mechanism comprises sound mallet (4), axle rod (26), system sound felt (6).The quantity of sound mallet (4) is corresponding with the quantity of key chord group, and all sound mallet (4) is through on the axle rod (26), and with jump ring grouping location, roller rod (26) is fixed on the wooden frame of keyboard frame both sides.Sound mallet (4) is used the plastics manufacturing, and head is surrounded by sheepskin or felt, and mallet bar middle part leans against on the fore-set (7), and the hanging portion of mallet tail is stained with system sound felt (6).When static, system sound felt (6) is close to the string of a musical instrument (21).During button, the key tail makes the direct stressed transmission of sound mallet (4) by fore-set (7), and sound mallet (4) is lifted by fore-set (7), rotates around axle rod (24), makes system sound felt (6) leave the string of a musical instrument (21), and the string of a musical instrument (21) is hit by sound mallet (4) and pronounces.When sound mallet (4) is got back to stationary state, system sound felt (6) leans against the string of a musical instrument (21) again and goes up and the system sound.

Stepping on lobe mechanism is made of pedal (23), transiting rod (19), tenuto support plate (5).Totally two of pedals (23), one links to each other with the vertical transiting rod of laying (19), and tenuto support plate (5) is withstood in transiting rod (19) upper end.Tenuto support plate (5) is a whole plate, withstands all sound mallets (4), and there is axle at two ends, and axle (30) is fixed on the wooden frame of keyboard frame both sides.When needing, step on pedal (23), transiting rod (19) is jack-up tenuto plate (5) upwards, makes the system sound felt (6) of sound mallet (4) afterbody leave sound string (21) slightly, reaches the purpose of tenuto.Another piece pedal (23) is controlled the tone color potentiometer switch of electronics amplifier, reaches the purpose of gentle sound, off beat.

The principle of work of electronics amplifier such as Fig. 3, its electric power loop is made of transformer, voltage stabilizing, detecting element; Its repeating loop comprises acoustic pickup (31), two to three, impecance tansformer (32), 20W low-frequency amplifier (33), loudspeaker (36), acoustic pickup (31) are installed in the back side of soundboard (2), be fixed on the floor, loudspeaker (36) is installed in the below of fingerboard, volume switch (35) is installed on the piano table top, and tone color potentiometer (34) links to each other with one of pedal (23).

Shell adopts the timber of surface aesthetic, and Korean pine is selected in yielding place for use, and surface treatment requires technology meticulous, adopts middle-grade paint vehicle, reduces cost as far as possible.

Situation about often occurring in the piano manufacturing has been done following processing: for solving friction, percussion noise problem, felt is all added to weaken noise in all gearing friction positions, in plastics and the lubricating oil filling of metal rotating part, metal and timber structure friction position isolate with sheepskin, adopt the chemical fibre felt to prevent worm-eaten in addition.For solving the tone color problem, except that establishing amplifier, wrap sheepskin and felt in sound mallet (4) string part position, adjust sheepskin bar and mat thickness and adjust tone color.For solving maintenance problem, complete machine is divided into source of sound part, keyboard portion, steps on lobe part, electronics amplifier, several big independent sectors of shell, assembling respectively, dismounting does not easily need the professional to keep in repair.

About 300～400 yuan of the utility model complete machine cost, it approximately is 1/10th of existing piano least cost, small volume, very easily universal, and playing effect is than dulcimer, organ grace, extremely approximate piano, when using in the family, the electronics amplifier need be do not used, the impact to neighbours can be alleviated, when formal performance, teaching, can use amplifier, reach instructions for use to increase volume and tone color thickness. If all adopt the dulcimer string, reduce key subnumber order, as get 61 keys, correspondingly further simplified structure just can be made more cheap and high-grade toy for children piano miniaturization, its Acoustics and children are played all be better than existing toy organ in the training.

Accompanying drawing 4 is mechanical schematic of existing piano.

Pin before the 1-wherein; The 2-packing ring; The white key of 3-; The 4-black key; 5-pin port lid; Pin among the 6-; The 7-fore-set; The 8-linkage lever; 9-push rod groove; 10-linkage lever groove; 11-spoon nail; The 12-push rod spring; The 13-push rod; 14-climbs the band hook; 15-climbs band; 16-keeps off grafting; The 17-adjuster; 18-adjuster button wood; The 19-cam; 20-tail pillow; The 21-cam groove; 22-mallet handle; 23-sound mallet; 24-sound mallet spring; 25-sound mallet sleeper; The 26-damper; 27-damper button wood; 28-damper lever; 29-damper spring; 30-damper groove; 31-damper sleeper; The 32-damper is argued for the sake of arguing; 33-hammered string instrument girder wood; 34-hammered string instrument iron beam; 35-brandreth column cap; 36-brandreth lead screw; 37-brandreth cap nut; Sleeper before the 38-; Sleeper among the 39-; Sleeper behind the 40-.

Claims (4)

1, a kind of piano, it is characterized in that by comprising string row, support, soundboard, keyboard mechanism, stepping on lobe mechanism and shell is constituted:

1.1 adopt vertical string row, whole or 80% use dulcimer string;

1.2 keyboard mechanism comprises the preceding sleeper [16] of black key, preceding sleeper () [15], preceding sleeper (two) [14], and their height is lower slightly successively;

1.3 key tail end vertical fixing fore-set [7], directly sound mallet [4] is given in power transmission;

1.4 all sound mallet [4] is installed on the beaming roller [26];

1.5 sound mallet [4] afterbody is stained with system sound felt [6].

2, popular upright piano as claimed in claim 1 is characterized in that can setting up the electronics amplifier at the soundboard back side in case of necessity.

3, popular upright piano as claimed in claim 2, it is characterized in that the electronics amplifier by be installed in behind acoustic pickup (31), input impedance transformer (32), low-frequency amplifier (33), the tone color potentiometer (34) that links to each other with pedal (23) of soundboard, be installed in volume switch (35) on the table top, the loudspeaker (36) and the electric power loop that are installed in below the keyboard constituted.

4, popular upright piano as claimed in claim 1 is characterized in that sound mallet (4) is by the plastics manufacturing.

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