CN109859725B

CN109859725B - Stringed instrument sound cavity consonant resonance assembly

Info

Publication number: CN109859725B
Application number: CN201910170857.0A
Authority: CN
Inventors: 胡娟; 黄晶晶; 祁姗姗
Original assignee: Henan Polytechnic Institute
Current assignee: Henan Polytechnic Institute
Priority date: 2019-03-07
Filing date: 2019-03-07
Publication date: 2020-10-27
Anticipated expiration: 2039-03-07
Also published as: CN109859725A

Abstract

The invention discloses a stringed instrument sound cavity consonant resonance component, which comprises a sound transmission column supported between the upper wall and the lower wall of a sound cavity, wherein the sound transmission column is a regular n-shaped combined column formed by combining n spaced column blocks, n is more than or equal to 3, the inner side of the regular n-shaped combined column is a hollow cavity, the inner side of the regular n-shaped combined column is a threaded surface, a central stud is in threaded installation with the hollow cavity of the regular n-shaped combined column, and a thin steel sheet, a sleeve piece, a sound insulation board and a pressing piece are sequentially sleeved on the outer side of the regular n-shaped combined column to form a layer of vibration group. Moreover, by adjusting the angles and the positions of the plurality of sound insulation plates, different resonant steel sheets can be used instead, and the number of the resonant steel sheets can be changed, so that a plurality of adjustment mode choices are provided.

Description

Stringed instrument sound cavity consonant resonance assembly

Technical Field

The invention belongs to the technical field of auxiliary resonance components of stringed instruments, and particularly relates to an assembly which is arranged in a sound cavity of a stringed instrument and is used for assisting in resonance.

Background

Stringed instruments are an important branch of the musical instrument family, and in classical music, and even modern music, almost all lyric melodies are played by string parts. It can be seen that the delicateness and the listening are common features of all stringed instruments. Since the stringed musical instrument sounds by vibrating the tensioned strings by means of mechanical force, the sound volume is limited to a certain extent. String instruments usually use different strings to play different tones, sometimes need to use fingers to press strings to change the string length, thus achieving the purpose of changing the pitch. The stringed musical instruments all need the sound cavity to produce resonance, the vibration of the sound cavity only depends on the vibration and sound transmission of the cavity wall, the influence factor of the material of the sound cavity is very large, and if the material of the sound cavity is poor, the tone quality of the stringed musical instruments is difficult to change substantially. The Chinese string instruments are commonly used in Guzheng, Guqin, lute and urheen, etc., and the manufacture of the traditional musical instruments belongs to a relatively mature process, for example, the manufacture level of the Chinese string instruments or the Guqin by manufacturers is mainly reflected in the aspects of material selection, panel thickness control, etc., the texture is obtained from the differences of the root, the middle and the tip of a tree, towards the shade or towards the sun, and the thicknesses of different sound areas and panels are different, etc. Or by changing the rare materials such as pterocarpus indicus, nanmu, redwood, etc. The traditional manufacturing process is mainly characterized by improving and lifting the stability and manufacturability of tone color, hand feeling and sound, wherein many manufacturers do not determine the improvement of tone color or only slightly improve resonance after improving the product grade, and the current situation of light tone color of heavy materials appears. Although good sound or poor sound of the koto or the guqin depends on material selection and processes, the good sound or poor sound of the koto or the guqin is influenced by other factors, so that standard data and empirical data are not available in the manufacturing process, once a product is formed, the sound quality is also qualitative, and the improvement for improving the sound quality is very limited. Influenced by price and manufacturing cost factors, most stringed instruments in the market are at the smashing level, the sound is insensitive, the sound is short, and the problems that the sound is blocked and disappears quickly when the strings hit paper exist, for example, the Chinese zither is shown that 13 strings to 1 string contain more or even all 'wood sound', and the 'wood sound' is generated because the thickness of the panel is unreasonable, and the vibration of the strings cannot excite the vibration of the panel through the propagation of the bridge. Consumers purchase string instruments of inferior quality and then become ribs, which is not conducive to learning and use.

Disclosure of Invention

Aiming at the problems that stringed instruments with poor quality generally exist in the market at present and resonance cannot be effectively improved, the invention provides a consonant resonance component which can be matched with the stringed instruments to enable sound cavities of the components to have better resonance function, and a multi-level sound effect expression form is achieved through isomorphic reasonable adjustment.

The technical scheme adopted for realizing the purpose is as follows: a string instrument sound cavity consonant resonance assembly comprises a sound transmission column supported between the upper wall and the lower wall of a sound cavity, wherein the sound transmission column is a positive n-edge-shaped combined column formed by combining n spaced column blocks, n is more than or equal to 3, the inner side of the positive n-edge-shaped combined column is a hollow cavity, the inner side of the positive n-edge-shaped combined column is a threaded surface, and a central stud is in threaded installation with the hollow cavity of the positive n-edge-shaped combined column; after the central stud is installed, the n column blocks of the regular n-edge-shaped combined column expand outwards; the method comprises the following steps that a thin steel sheet, a suite, a sound insulation board and a pressing piece are sequentially sleeved on the outer side of a regular n-edge-shaped combined column to serve as a layer of vibration group, wherein the thin steel sheet comprises a regular n-edge-shaped hole, the regular n-edge-shaped hole is sleeved on the outer side of the regular n-edge-shaped combined column in a matching mode, the inner side of the suite is a regular n-edge-shaped hole, the outer side of the suite is a cylinder, the upper section of the cylinder is a threaded section, the lower end of the cylinder is a smooth section, the regular n-edge-shaped hole of the suite is sleeved on the outer side of the regular n-edge-shaped combined column in a matching mode, and the aperture of the regular n-edge-shaped; the sound insulation board comprises a cylindrical sound insulation board through hole, the sound insulation board is sleeved on the outer side of the external member through the sound insulation board through hole, the sound insulation board is attached to the sound insulation board thin steel sheet, the pressing piece is annular, the inner side face of the pressing piece is provided with threads, the pressing threads are connected to the thread sections of the external member, and the pressing piece is pressed against the sound insulation board to force the sound insulation board to extrude the thin steel sheet; the outer side of the regular n-edge-shaped combined column is sleeved with m layers of vibration groups from bottom to top, m is more than or equal to 7 and less than or equal to 22, the lengths or the thicknesses of the adjacent thin steel plates are sequentially reduced or increased, the outer sides of the vibration groups on the top layer and the bottom layer are sleeved with an upper envelope and a lower envelope, and the upper envelope and the lower envelope are respectively fixed on the side face of the central stud through locking wires.

The edge of the sound insulation board in each layer of vibration group is provided with a flanging which turns to one side, the thickness of the flanging is the same, and the thickness of the flanging is larger than that of the central area of the sound insulation board.

The length of the central stud is less than or equal to that of the regular n-edge combined column.

And each surface or edge angle of the outer side of the regular n-edge-shaped combined column is provided with a concave clamping groove, and the thickness of each clamping groove is equal to that of the thin steel sheet at the corresponding position.

The regular n-polygon combined column is positioned near the sound outlet at the bottom of the sound cavity.

The invention has the beneficial effects that: the sound transmission component is connected with the upper inner wall and the lower inner wall of the sound cavity of the stringed instrument through the regular polygon combination columns, and the sound transmission component can transmit the sound transmission of the upper inner wall and the lower inner wall of the sound cavity to the consonant resonance component. Moreover, by adjusting the angles and the positions of the plurality of sound insulation plates, different resonant steel sheets can be used instead, and the number of the resonant steel sheets can be changed, so that a plurality of adjustment mode choices are provided. The invention is particularly suitable for stringed instruments of poor quality for improving their dubbing.

The invention is a resonance auxiliary component, the regular n-polygon combined column is positioned near a sound outlet at the bottom of a sound cavity, so that a good resonance sound production effect can be achieved, the regular n-polygon combined column is positioned at the sound outlet, the sound baffles can be adjusted conveniently in the using process, the angles and the positions of the sound baffles can be adjusted in advance on the basis of a certain adjustment principle to be standardized, and then the regular n-polygon combined column is assembled in the sound cavity of a stringed instrument product.

The resonance auxiliary component can be flexibly installed and removed, and the upper end and the lower end of the regular polygon combined column are directly connected with two opposite side walls of the sound cavity, such as the side walls of the panel and the bottom plate, through a small amount of glue or no glue during installation. When the height of the regular polygon combined column is insufficient, the height can be increased by additionally arranging the sound transmission gasket. The user can also tune himself according to his own tuning requirements, and install and remove. The invention can adjust each sound insulation board to the condition that all steel sheets do not vibrate, and the original tone quality effect of the stringed instrument is basically not influenced.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a bottom view of fig. 1.

Fig. 4 is a schematic front side perspective view of fig. 1.

Fig. 5 is a rear side perspective view of fig. 1.

Fig. 6 is an assembly view of fig. 1.

Fig. 7 is a side view of fig. 6.

Fig. 8 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 10 is a top view of fig. 8.

Fig. 11 is a perspective view of fig. 8.

Reference numbers in the figures: 1 is the square post of passing a sound, 2 is the sheet steel, 3 is the acoustic celotex board, 4 is the external member, 5 is the casting die, 6 is upper envelope, 7 is lower envelope, 8 is the locking silk, 9 is the steel sheet square hole, 10 is the acoustic celotex board perforation, 11 is the external member square hole, 12 is central double-screw bolt.

Detailed Description

Example 1: a sound cavity consonant resonance component of a stringed instrument as shown in figure 1 comprises a square combination column (i.e. a square sound transmission column 1 with a combination quadrangular prism), a thin steel sheet 1, a sound insulation board 3, a sleeve 4, a pressing piece 5, an upper envelope 6, a lower envelope 7 and a central stud 12. The square combination column is formed by combining four column blocks which are arranged at intervals as shown in fig. 6, preferably wooden square column blocks, and is preferably rosewood, nanmu or rosewood. The square combination column is connected with the upper inner wall and the lower inner wall of the sound cavity of the stringed instrument.

Moreover, the inner side of the regular quadrilateral combination column is a hollow cavity, the inner side of the regular quadrilateral combination column is a thread surface, and a central stud 12 is installed with the hollow cavity of the regular quadrilateral combination column in a threaded manner. After the central stud 12 is installed, four column blocks of the regular quadrilateral combination column expand outwards to tightly support each thin steel sheet 1, so that the sound transmission quality is improved.

As can be seen from figures 1-5, a plurality of vibration groups are sleeved on the outer side of the square combination post from bottom to top, and the number of the vibration groups is selected according to the number of chords of the corresponding stringed instrument. The number of layers of the vibration groups should be not less than the number of chords of the stringed instrument, and part of the vibration groups can be stopped after adjustment.

Referring to fig. 6 and 7, each layer of vibration group is sleeved with a thin steel sheet 1, a sleeve 4, a sound insulation board 3 and a pressing piece 5 in sequence on the outer side of a square combination column to form a layer of vibration group. The thin steel sheet 1 comprises square holes, and the square holes are sleeved on the outer side of the square combined column in a matching mode. The inner side of the sleeve 4 is a square hole, the outer side of the sleeve is a cylinder, the upper section of the cylinder is a threaded section, and the lower end of the cylinder is a smooth section. The square hole of the external member 4 is sleeved outside the square combined column in a matching way. The baffle 3 comprises a cylindrical baffle-through-hole 10, and the baffle 3 is fitted to the outside of the sleeve 4 through the baffle-through-hole 10. Because each thin steel sheet 1 is sleeved outside the corresponding square combination column in a matching mode through the square hole, after the square combination column is provided with the central stud 12, the four column blocks expand outwards under the supporting effect of the central stud 12, so that the thin steel sheets 1 can be embedded into the side wall of the square combination column, the square combination column tightly supports each thin steel sheet 1, and the sound transmission quality is improved. And each surface or edge angle of the outer side of the regular quadrilateral combination column can be provided with a sunken clamping groove, the thickness of each clamping groove is equal to that of the thin steel sheet at the corresponding position, each thin steel sheet 1 corresponds to each clamping groove during assembly, and when four column blocks expand outwards through the central stud 12, each thin steel sheet 1 is ensured to be tightly embedded into the deep part of the corresponding clamping groove. The length of the central stud 12 is less than or equal to that of the square combined column, the square combined column is made of good hard sound transmission materials, sound transmission of the upper inner wall and the lower inner wall of the sound cavity is transferred to the consonant resonance component, and after the resonance function is adjusted in advance, the string sounds can generate harmonic sounds through the resonance steel sheets in the consonant resonance component, so that the sound quality of the stringed instrument is improved, and the string sounds of the stringed instrument are accompanied with steel sounds.

The sound insulation board 3 is attached to the surface of the thin steel sheet 1 of the sound insulation board 3. The edge of the sound insulation board 3 in each layer of vibration group is provided with a flanging which is turned to one side, the thickness of the flanging is the same, and the thickness of the flanging is larger than that of the central area of the sound insulation board 3.

The pressing piece 5 is in a ring shape, the inner side face of the pressing piece is provided with threads, the pressing threads are connected to the thread sections of the sleeve piece 4, and the pressing piece 5 is pressed against the sound insulation plate 3 to force the sound insulation plate 3 to extrude the thin steel sheet.

Thus, adjacent diaphragm vibrating groups are separated by the support of the sleeve 4, making the vibrating groups independent of each other. Each vibration component part receives sound transmission independently and carries out frequency adjustment on the thin steel sheets in the group through the sound insulation plate 3. The length or thickness of each thin steel sheet 1 of the adjacent vibration groups is sequentially reduced or sequentially increased. By adjusting the angles and positions of the plurality of baffle plates 3, different resonant steel sheets can be used instead and the number of the resonant steel sheets can be changed, so that a plurality of adjustment mode choices are provided. The regular quadrilateral combination column is positioned near a sound outlet at the bottom of the sound cavity, so that a good resonance sound production effect can be achieved, the sound outlet is positioned at the position of the sound outlet, so that the sound insulation boards 3 can be adjusted in the using process, and the angles and the positions of the sound insulation boards 3 can be adjusted in advance on the basis of a certain adjusting principle to be standardized and then assembled into the sound cavity of a stringed instrument product.

As shown in fig. 3 and 4, an upper envelope 6 and a lower envelope 7 are sleeved outside the vibration groups of the top layer and the bottom layer, and the upper envelope 6 and the lower envelope 7 are respectively fixed on the side surface of the central stud 12 through a locking wire 8.

Example 2: on the basis of the embodiment 1, the structure of each layer of vibration groups is changed, and as shown in fig. 8, each layer of vibration groups is symmetrically distributed along two sides of the regular quadrilateral combination column.

Example 3: as shown in FIG. 9, on the basis of embodiment 1, the multi-layer vibration set is installed on only a part of the middle part of the square combination post, which is suitable for small stringed musical instruments.

Claims

1. A stringed instrument sound cavity consonant resonance assembly, including supporting the sound conduction post between the upper and lower walls of the sound cavity, characterized by that, the said sound conduction post is the regular quadrangle assembled column formed by four spaced column blocks combination, the inside forming the regular quadrangle assembled column is the cavity and the inside is the thread surface, a central stud and the cavity screw thread of the regular quadrangle assembled column are installed; after the central stud is installed, four column blocks of the regular quadrilateral combination column expand outwards; the method comprises the following steps that a thin steel sheet, a sleeve piece, a sound insulation plate and a pressing piece are sequentially sleeved on the outer side of a regular quadrilateral combination column to serve as a layer of vibration group, wherein the thin steel sheet comprises a regular quadrilateral hole, the thin steel sheet is sleeved on the outer side of the regular quadrilateral combination column in a matching mode through the regular quadrilateral hole, the inner side of the sleeve piece is a regular quadrilateral hole, the outer side of the sleeve piece is a cylinder, the upper section of the cylinder is a threaded section, the lower end of the cylinder is a smooth section, the regular quadrilateral hole of the sleeve piece is sleeved on the outer side of the regular quadrilateral combination column in a matching mode, and the aperture of the regular quadrilateral hole of the sleeve piece is larger than that of a regular four; the sound insulation board comprises a cylindrical sound insulation board through hole, the sound insulation board is sleeved on the outer side of the external member through the sound insulation board through hole, the sound insulation board is attached to the sound insulation board thin steel sheet, the pressing piece is annular, the inner side face of the pressing piece is provided with threads, the pressing threads are connected to the thread sections of the external member, and the pressing piece is pressed against the sound insulation board to force the sound insulation board to extrude the thin steel sheet; the outer side of the regular quadrilateral combination column is sleeved with m layers of vibration groups from bottom to top, m is more than or equal to 7 and less than or equal to 22, the lengths or the thicknesses of the adjacent thin steel plates are sequentially reduced or increased, the outer sides of the vibration groups on the top layer and the bottom layer are sleeved with an upper envelope and a lower envelope, and the upper envelope and the lower envelope are respectively fixed on the side surface of the central stud through locking wires.

2. A stringed musical instrument sound cavity consonant resonance assembly of claim 1, wherein the edge of the baffle in each vibration group is provided with a flange turned to one side, the thickness of the flange is the same, and the thickness of the flange is greater than the thickness of the central area of the baffle.

3. A stringed musical instrument sound cavity consonant resonance assembly of claim 1, wherein the length of the central stud is less than or equal to the length of a square shaped composite post.

4. A stringed instrument sound cavity consonant resonance assembly of claim 1, wherein each face or corner of the outer side of said regular quadrilateral combination post is provided with a recessed notch, and the thickness of the notch is equal to the thickness of the corresponding position of the thin steel plate.

5. A stringed musical instrument cavity consonant resonance assembly of claim 1, wherein the regular quadrilateral composite post is located near the cavity bottom sound outlet.