CN2290373Y

CN2290373Y - Sounding plate

Info

Publication number: CN2290373Y
Application number: CN 97235837
Authority: CN
Inventors: 郑真
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-25
Filing date: 1997-04-25
Publication date: 1998-09-09
Anticipated expiration: 2007-04-25

Abstract

The utility model relates to a sounding plate, which comprises a metal base, and metal sounding cylinders, wherein, the lengths of the metal sounding cylinders can be changed; one end of the metal sounding cylinders is fixed on the metal base, and the other end is a free end; the free end of the metal sounding cylinders is sheathed with a ring or a cover. The utility model can adjust the intonatio, and meanwhile, the utility model can guarantee the moistening of tone colors, the efficiency of manufacturing and adjusting the sounding plate is ensured, the utility model offers a key sounding device which can ensure the intonatio, and the utility model provides a sounding plate which can change to the direction of reducing characteristic frequencies.

Description

Pronunciation board

The utility model relates to a kind of structure of music musical instrument, refers more particularly to the structure and the making of the pronunciation board of toy or children piano or other musical instrument.

Piano is the most frequently used a kind of keyboard instrument, and accuracy in pitch is the most important index and the parameter of all musical instruments.For for the piano of string sounding, regulating accuracy in pitch in producing and using still has some ways.For the piano of metallic sound cylinder pronunciation or the pronunciation board of other percussion instrument, regulating accuracy in pitch in producing and using just has some difficulties.Metallic sound column type pronunciation board is made up of the metallic sound cylinder that a metal base and length change, and an end of metallic sound cylinder is fixed on the metal base.The length of metallic sound cylinder and thickness size and dimension have provided the characteristic frequency of metallic sound cylinder vibration substantially, also all relevant simultaneously with fixing, material, craft of metal dealing on pedestal, when promptly regulating accuracy in pitch, emending frequency tends to depart from last predetermined value.When heightening frequency, can cut partly metallic sound cylinder, it is shortened.And difficulty is mainly reflected in the characteristic frequency reduction that how to make the metallic sound cylinder.It is the method for using always that the metallic sound cylinder that extends is retightened on pedestal, and this is a kind of method of trying to transfer purely, and the effect of practice is too poor.And because regulate too difficulty, can't guarantee accuracy in pitch and make manufacturer have to abandon market.

The purpose of this utility model is: solve above-mentioned difficulties, make guarantee tone color when regulating accuracy in pitch again and profit, guarantee to make or regulate the efficient of piano or other musical instrument pronunciation board, provide a kind of and can guarantee the piano of accuracy in pitch or the pronunciation board of the most critical in other musical instrument, provide a kind of can be to reducing the pronunciation board that the characteristic frequency direction changes.Other purpose of the present utility model is listed in specification in addition.

The purpose of this utility model is achieved in that a kind of pronunciation board, comprise the metallic sound cylinder composition that metal base and length change, one end of metallic sound cylinder is fixed on the metal base, it is characterized in that being with near the free end of metallic sound cylinder or end circle or cover.The material of circle or cover has multiple choices, as metal material: copper, iron, aluminium, macromolecular material etc.

Characteristics of the present utility model are: because monnolithic case and the whole metallic sound cylinder of circle or cover (end cover) be complementary, provide a kind of can be to the piano that reduces the variation of characteristic frequency direction or the pronunciation board of other musical instrument.Not only can not influence the tone color of metallic sound cylinder, and make the accuracy in pitch adjusting become possibility, improved the efficient of debugging accuracy in pitch and assembling greatly, for example utilize end cover of the present utility model, can regulate accuracy in pitch, its process is as follows: knock the metallic sound cylinder, characteristic frequency with the pronunciation of each metallic sound cylinder of apparatus measures, just can roughly determine the direction of regulating frequency, that is to say that each metallic sound cylinder should add the end cover of what quality as can be seen basically, or should be in the quality of end minimizing, further fine tuning in addition then so just can fully guarantee the accuracy in pitch of pronunciation board.Though the utility model is mainly used in the soundboard of toy piano, therefore significant more.Because the Listening Training to the juvenile is vital, in fact market has also proposed this requirement, and many products formerly are exactly to be forced to withdraw from from market because regulate the problem of accuracy in pitch.

The utility model is described in further detail below in conjunction with accompanying drawing with by embodiment:

Fig. 1 is a structural representation of the present utility model

As shown in the figure, comprise metallic sound cylinder 2 compositions that metal base 1 and length change in order, an end of metallic sound cylinder is fixed on the metal base.The fixedly connected metallic sound cylinder 2 that is arranged in a row on the pedestal 1 of cast iron or cast steel, fixedly connected mode is generally the tight fit squash type.The most frequently used method is to make diameter in the anchor portion of the metallic sound cylinder that cooperates with pedestal to become big position, and the adjoiner at this position is again a neck.Offer the circular hole that a row can pass through the metallic sound body diameter on pedestal, the free end of metallic sound cylinder passes circular hole, up to the chap position and the pedestal tight fit of the anchor portion of metallic sound cylinder.Neck is sounded the free vibration of metallic sound cylinder.Having the installing hole 4 that is fixed on piano or other musical instrument on the pedestal, in on being installed to piano or other musical instrument, key impacts near the anchor portion of metallic sound cylinder, the metallic sound cylinder sends by characteristic frequency and the musical sound that mixed by the multi resonant frequency spectrum, certainly tonequality and tone color also depend on the material of key, metallic sound cylinder etc., and the material of metallic sound cylinder is generally got carbon steel.

After the metallic sound cylinder fixes,, be that the free end of metallic sound cylinder is with circle or overlaps 3 in the upper end of respective metal pronunciation cylinder 2 according to the preliminary judgement of the sound that impacts.The material of circle or cover has multiple choices, as metal: copper, iron, aluminium, macromolecular material etc.Can make the end cover of spotty plurality of specifications, can make, can be to mould cover by metal skin, also can wire coiled 1-100 all size of circle, number of turns sight line footpath and deciding, with thicker wire with half-turn fixing also can, wire can be enamel-covered wire, copper cash, iron wire etc.After the prestowage of end cover is appropriate, to metal material can be bonding or scolding tin form, also can the very tight winding of wire.

Near but plastic sheath hot melt or be bonded in metallic sound cylindrical end or the end.Another embodiment of the present utility model makes tin matter end cover with technologies such as melts soldering tin near the end of metallic sound cylinder or end.

End cover overall fixed near the end or end of metallic sound cylinder, can be guaranteed that the true qualities of tone color and tonequality are constant substantially.

Claims

1. pronunciation board comprises that the metallic sound cylinder that metal base and length change forms, and an end of metallic sound cylinder is fixed on the metal base, and the other end is a free end, it is characterized in that the free end of metallic sound cylinder or near be provided with circle or cover.

2. by the described pronunciation board of claim 1, it is characterized in that described cover in the metallic sound cylindrical end is that metal skin is made or for moulding cover.

3. by the described pronunciation board of claim 1, it is characterized in that described circle in the metallic sound cylindrical end is a 1-100 circle wire.