CN2585352Y - Scale connecting strings type modulation mechanism for improving traditional zheng - Google Patents

Abstract

The utility model relates to a traditional zither type string cutting modulation machine core. The utility model is characterized in that under the premise of not changing the basic structure of the traditional zither, an inner cavity at the right side of the zither is fixed with a cam modulation machine core; a cam shaft is orderly modulated according to A-D-G-C-F-#+ [b] B by manual turn knobs. The cam shaft drives a driven rocker to draw a string cutting head, so vibrational strings are pressed on a string cutting article, thereby, the utility model shortens the effective string length, and realizes the integral modulation. The utility model can reserve the tone color and the play mode of the traditional zither more, and avoids the trouble of frameshift modulation and the trouble that a plurality of zithers without identical tones are placed on one stand. The technique of the zither type string cutting modulation tends to become mature since the eighties of the twentieth century. The utility model has the advantages of small displacement, good intonation, labor saving and high speed. Besides, six tones can be freely converted in one second. The utility model provides large convenience for beginners and professional performance persons.

Description

Traditional zheng scale connecting strings type modulation movement

The reform of traditional instrument Zheng aspect modulation is of long duration, and occurred multiple qin type as bold trial, but a large amount of that adopt and few by the concert performer so far, its reason is that the user wishes to keep more traditional tone color and playing mode.This novel purpose is that the scale connecting strings type modulation principle that will propose from the 1980s combines with the traditional zheng that still widely adopts today, in the hope of convenient quick modulation.

The research of scale connecting strings type modulation movement is to attempt under the prerequisite that does not change traditional zheng basic structure, fixes a movement at the right side of zither qin intracoelomic cavity.Traditional zheng must be opened a square hole under scroll head portion web, open a circular hole on the treble side plate, opens some apertures over against the position of string on soundboard, installs movement, can realize modulation.Describe below in conjunction with accompanying drawing.

This novel by camshaft (Fig. 1 1), cam pedestal (Fig. 1 2), driven fork (Fig. 1 3), fork pedestal (Fig. 1 4), cut tumtum (Fig. 1 5), and external accessory (as Fig. 1 6) etc. formation.Camshaft has the cam bit that equates with the string number to be fixed on the axle, and five is one group, and its shape and modulation mechanism are seen my development " the quick inflexion zither of multi-functional wild goose formula " (86 2 01808 have authorized, 88 years international shows of inventions in Beijing, silver medal), do not give unnecessary details in addition.The axle center of this axle is a hollow tubular, and two of the hollow tubular of camshaft respectively penetrates a circular shaft that is complementary with the hollow tubular internal diameter, fixes with pin and camshaft.

Cam pedestal (Fig. 1 2) is a pair of tablet, is fixed with bearing (Fig. 1 7) above, and bearing bore diameter matches with the aforementioned external diameter that penetrates circular shaft in the hollow tubular; The periphery of cam pedestal has some holes so that the modulation movement that assembles is fixed on the both sides side plate of thorax in the Zheng with screw etc.; One end of cam pedestal (this end points to the scroll head direction during thorax in the Zheng of packing into) is equipped with the fork pedestal (Fig. 1 4) of driven fork, the fork pedestal is a microscler tablet, be fixed with the driven fork of axle sheet (see the 3 slave pendulum pole-footing portions of Fig. 1, only draw a group) the axle active connection of sheet that equates with Zheng string number above.

Driven fork is on one group one the active bar that is connected on the fork pedestal axle sheet, the fork steamboat that is driven in cam to be housed, porose between steamboat and fork live axle, in order to pass the foot piece that cuts a tumtum (Fig. 1 5), spiral shell button and nut are arranged on the foot piece, be connected on the fork by active by their foot pieces.

Driven steamboat on the driven fork makes fork to the bottom under the cam on the camshaft promotes, affect a section tumtum to move downward, be fixed on the ring-type cutting string-head that cuts tumtum foot piece top, be enclosed within on the string that to change voice, be fixed with the guide pole parallel on the cutting string-head with foot piece, be with back-moving spring under the cutting string-head on the foot piece, penetrate section the tumtum foot piece and parallel with it guide pole of Zheng scroll head portion soundboard, the plane that has guaranteed ring-type cutting string-head when section tumtum moves up and down can not turn to perpendicular to strings for musical instruments, this makes when cutting string-head does not cut string, string is positioned at the middle part of ring and does not influence the vibration of string, when cutting string-head is pressed down by cam and during the bottom at fork, thereby the ring-type cutting string-head is pressed in the string that vibrates on the product that cut string product platform on the soundboard and makes the string of vibration by brachymemma, thereby the tone of short effective chord length raises and has realized the rising semitone of single-tone, as is generally known, in the five-tone scale " 1; 2; 3; 5; 6 " in " 3 " sound rising semitone after, become " 4 ", as then can producing new five-tone scale as new " 1 " of transferring with " 4 ", and the like then the reasonable arrangement by cam can make Zheng by A → D → G → C → F → ^bThe order of B realizes the quick modulation of string row.

Then driven fork is under the affecting of cutting string-head foot piece when camshaft bounces back, provide thrust by compressed back-moving spring, to push up on the cutting string-head, thereby the string that unclamps on the product of being pressed in makes it recover original effective chord length, long effective chord length is sent lower sound, thereby has realized the reduction semitone of single-tone.

Cutting string product platform (Fig. 1 6) on the soundboard is one of external accessory of traditional zheng scale connecting strings type modulation movement, it is an arc bar that is complementary with the Zheng soundboard, its top is the stepped appearance plane, to satisfy boring and to glue the technological requirement of product and the power of back-moving spring is vertically worked.

Before movement was installed, the traditional zheng width of intending modulation should slightly be wider than general Zheng, and the height of string shaft must be more lower slightly in addition, reserves the space that some place driven fork pedestal because narrower string shaft can be this novel movement.

When mounted, need only be in Zheng scroll head portion, make a call to a corresponding hole, position of bearings with modulation movement overhead cam pedestal on the treble side plate, circular shaft in the hollow tubular of movement overhead cam shaft treble one end is extracted out, treat that movement is located in the qin body after, again circular shaft is penetrated from the hole that the treble side plate is opened and inserts by bearing in the hollow tubular of camshaft, by pin circular shaft and camshaft are fixed, circular shaft stay the outer tail end of treble side plate will with another external accessory of movement, the manual knob (figure slightly) that promptly has six location matches, then can camshaft be rotated every 60 ° of location once successively after fixing by controlling manual knob, punch to penetrate the foot piece of section tumtum by cutting string product platform and scroll head soundboard in the appropriate location that is equivalent to the string row, and be stained with the product of suitable height in position, then the string of a musical instrument is passed the annulus of each cutting string-head, cooperate by carefulness, debugging then can realize the whole modulation of above-mentioned string row.

The scale connecting strings type modulation is because action is little, string need only perpendicular displacement 1-2 millimeter it is enough, firmly little than the tension type modulation.As fruit adorn accurately then after the modulation accuracy in pitch secure, manual knob is swift in motion, and can realize the quick conversion of far and near related key a second, compared with the modulation of traditional zheng frameshit with appear on the stage and have several the not zithers of the people having the same aspiration and interest, how much convenient do not know, has huge market potential.

Claims (6)

1, a kind of for the traditional zheng scale connecting strings type modulation movement that improves traditional Zheng modulation performance and speed by camshaft (Figure of description 1 1), cam pedestal (Fig. 1 2), driven fork (Fig. 1 3), fork pedestal (Fig. 1 4), cut tumtum (Fig. 1 5), and external accessory (as Fig. 1 6) constitute, it is characterized in that: camshaft and fork pedestal all are contained on the cam pedestal, form independently scale connecting strings type modulation movement, realize modulation in the thorax in it can directly pack near the Zheng scroll head of certain size.

2, by the described traditional zheng scale connecting strings type of claim 1 modulation movement, it is characterized in that: the axle center of described camshaft is a hollow tubular, and can with penetrate pipe in and circular shaft that bore is complementary match.

3, by the described traditional zheng scale connecting strings type of claim 1 modulation movement, it is characterized in that: described cam pedestal (Fig. 1 2) is a pair of tablet, above except that being fixed with in order to the bearing that passes camshaft (Fig. 1 7), its periphery has some holes so that be fixed on the interior plate of Zheng, and cam pedestal one end is equipped with the fork pedestal (Fig. 1 4) of described slave pendulum stalk.

4, by the described traditional zheng scale connecting strings type of claim 1 modulation movement, it is characterized in that: on the described driven fork (Fig. 1 3) steamboat that is driven in cam is housed, steamboat has the hole with active the connection between the end of fork, in order to pass a section tumtum (Fig. 1 5) foot piece.

5, by the described traditional zheng product of claim 1 generation string-blocking modulation movement, it is characterized in that: described section tumtum (Fig. 1 5) is made up of ring-type cutting string-head and the foot piece that is attached thereto, the foot piece end has Luo button and mother Luo, be fixed with the guide pole parallel on the ring-type cutting string-head, back-moving spring is housed on the foot piece under the cutting string-head with foot piece.

6, by the described traditional zheng scale connecting strings type of claim 1 modulation movement, it is characterized in that: described external accessory is to have the manual knobs of six location and cut a string product platform (Fig. 1 6), cut the arc bar that is complementary with the Zheng soundboard that is shaped as of string product platform, bar top is the stepped appearance plane, porose and section string product on the plane.

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