CN109887477B - Sound cavity volume resistance adjusting mechanism for Chinese zither musical instrument - Google Patents
Sound cavity volume resistance adjusting mechanism for Chinese zither musical instrument Download PDFInfo
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- CN109887477B CN109887477B CN201910063370.2A CN201910063370A CN109887477B CN 109887477 B CN109887477 B CN 109887477B CN 201910063370 A CN201910063370 A CN 201910063370A CN 109887477 B CN109887477 B CN 109887477B
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Abstract
The invention discloses a sound cavity volume resistance adjusting mechanism for a Chinese zither instrument, wherein a connecting column is fixed between the upper wall and the lower wall of a sound cavity, an outer gear sleeve is sleeved outside the connecting column, a left sheet and a right sheet of sound-insulating cloth are symmetrically fixed on the circumferential side of the outer gear sleeve, and two outer ends of the left sheet and the right sheet of the sound-insulating cloth are respectively connected with a traction rope; the outer ends of the traction ropes on the two sides are respectively connected with an elastic traction component; and a driving mechanism for driving the outer gear sleeve to rotate and stop is arranged on the wall of the sound cavity at one end of the connecting column. The invention can be applied to the sound cavity of a Chinese zither or a Chinese zither, is used for properly increasing the sound resistance and resonance of the sound cavity, improving the stability of tone color and tone, and can adjust the sound resistance degree according to the self characteristics of different Chinese zithers or Chinese zithers so as to achieve the optimal configuration.
Description
Technical Field
The invention belongs to the technical field of auxiliary accessories of music equipment, and particularly relates to an instrument which is suitable for adding a sound blocking material in a sound cavity of a Chinese zither musical instrument and improving the sound quality by adjusting the sound blocking volume.
Background
The Chinese zither or the Chinese zither is a traditional musical instrument and has various manufacturing processes respectively, but the manufacturing processes belong to relatively mature processes, and the manufacturing level of a manufacturer on the Chinese zither or the Chinese zither is mainly embodied in the aspects of material selection, panel thickness control and the like, for example, the texture is obtained from the root, the middle and the tip of a tree, the tree faces towards the shade or the sun, and the thicknesses of different sound areas and panels are different. 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. However, the sound quality of the molded product can be improved by adding an effective auxiliary member. For example, the inventor finds out through multiple experiments in practice that the sound cavity section area near the sound outlet or near the zenith or the ground pillar has the effect of improving the sound quality by adding a proper amount of slightly symmetrical sound resistance materials (or resonance factors provided by sound resistance at the same time), but after different koto or guqin products are molded, the corresponding sound resistance change degree is required.
Disclosure of Invention
On the basis of the mature manufacturing process of the traditional Chinese zither musical instrument, the auxiliary adjusting part is additionally arranged in the sound cavity, and the tone quality effect is further improved or changed by adjusting the sound resistance or the vibration degree in the sound cavity.
The technical scheme adopted for realizing the purpose is as follows: a connecting column is fixed between the upper wall and the lower wall of a sound cavity, an outer gear sleeve is sleeved outside the connecting column, gears are distributed on all or part of the outer surface of the outer gear sleeve, a left sheet of sound-insulating cloth and a right sheet of sound-insulating cloth are fixed at symmetrical positions on the circumferential side surface of the outer gear sleeve respectively, and two outer ends of the left sheet of sound-insulating cloth and the right sheet of sound-insulating cloth are connected with a traction rope respectively; the outer ends of the traction ropes on the two sides are respectively connected with an elastic traction component; and a driving mechanism for driving the outer gear sleeve to rotate and stop is arranged on the wall of the sound cavity at one end of the connecting column.
The adopted elastic traction part is that fixing columns are respectively installed on sound cavity walls at symmetrical positions on two sides of a connecting column through fixing seats, deep groove rope wheels are respectively sleeved on the fixing columns on the two sides, and traction ropes of a left leaf and a right leaf of the sound insulation cloth are respectively wound in the corresponding deep groove rope wheels; and torsion springs are connected between each deep groove rope wheel and the corresponding fixed seat.
The adopted elastic traction component can also be a tension spring or a rubber belt, the outer ends of the traction ropes on the two sides are respectively connected with the corresponding tension spring or rubber belt, and the tension springs or the rubber belts on the two sides are respectively fixed on the sound cavity walls at the symmetrical positions on the two sides of the connecting column.
The driving mechanism for driving the outer gear sleeve to rotate and stop is characterized in that two shaft sleeves are fixed on a sound cavity wall, adjusting screws are sleeved in the two shaft sleeves, the adjusting screws are located between the two shaft sleeves and comprise thread sections, adjusting handles are mounted at the tail ends of the adjusting screws, abdicating holes are formed in the sound cavity wall at the tail ends of the adjusting screws, and the adjusting handles are located in the abdicating holes.
The invention has the beneficial effects; the invention can be applied to the sound cavity of a Chinese zither or a Chinese zither, and is used for properly increasing the sound resistance and resonance of the sound cavity and improving the stability of tone color and chord. Through a plurality of tests, it is known that the sound quality of the sound cavity near the sound outlet or the zenith or the groundsill can be improved by adding a proper amount of slightly symmetrical sound resistance materials or generating a resonance effect due to sound resistance factors, and the sound cavity is popular among people in the industry. The invention can change the sound resistance degree and always keep the sound resistance material in the tension state while properly increasing the sound cavity sound resistance in the sound cavity of the Chinese zither or the Chinese zither, thereby adjusting the sound resistance degree according to the self characteristics of different Chinese zithers or Chinese zithers and achieving the optimal configuration. And can prevent defects caused by blindly enlarging the sound resistance. The user can also tune himself according to his own tuning requirements. After the sound blocking material is completely contracted, the original tone quality effect of the Chinese zither or the Chinese zither is basically not influenced, and the additionally arranged mechanism can be flexibly disassembled and assembled.
Drawings
Fig. 1 is a schematic view of the deployed configuration of the present invention in use.
Fig. 2 is a schematic view of a semi-expanded configuration of the present invention in use.
Fig. 3 is a schematic view of the structure in direction a of fig. 2.
Fig. 4 is a schematic view of a cross-sectional structure B-B in fig. 2.
Reference numbers in the figures: the device comprises a connecting column 1, an outer gear sleeve 2, a sound insulation cloth left leaf 3, a sound insulation cloth right leaf 4, a traction rope 5, a deep groove rope wheel 6, a fixing column 7, a fixing seat 8, a torsion spring 9, a gear 10, an adjusting screw 11, a shaft sleeve 12, a thread section 13, an adjusting handle 14 and a abdicating hole 15.
Detailed Description
Example 1: a resistance volume adjusting mechanism as shown in figure 1 is suitable for Guzheng or Guqin musical instruments, and is arranged in the sound cavity of the corresponding musical instrument for properly increasing the sound resistance and resonance of the sound cavity and improving the stability of tone and chord. It is preferable to install the sound cavity in the vicinity of the sound outlet, or to replace the connection post 1 with a celestial post or a terrestrial post, or to install the sound cavity separately in the vicinity of the celestial post or the terrestrial post. The connecting column 1 is fixed between the upper wall (panel) and the lower wall (bottom) of the sound cavity of the corresponding instrument (the sound-transmitting column of the existing sound cavity, such as the celestial column or the ground column of a guqin, can also be utilized). The design of spliced pole 1 is cylindrical, and the cover is equipped with outer gear sleeve pipe 2 in the spliced pole 1 outside, and outer gear sleeve pipe 2 adopts PVC material pipe fitting, ensures that outer gear sleeve pipe 2 and spliced pole 1 surface have moderate extruded contactability. All or part of the outer surface of the outer gear sleeve 2 is distributed with gears 10, as shown in fig. 4. Meanwhile, the sound-proof cloth left leaf 3 and the sound-proof cloth right leaf 4 are fixed to the circumferential side symmetrical positions of the outer gear sleeve 2, respectively, and transmission is provided through the gear 10 and tension is provided to the sound-proof cloth left leaf 3 and the sound-proof cloth right leaf 4 through the respective teeth and grooves of the gear. When the outer gear sleeve 2 is rotated, the soundproof cloth left leaf 3 and the soundproof cloth right leaf 4 are respectively wound around the outside of the outer gear sleeve 2 from two directions, as shown in fig. 2 and 4. Cloth left side page or leaf 3 gives sound insulation and gives sound insulation cloth right side page or leaf 4 chooses for use the involucra that can render the string vibration, can be for artificial involucra or choose for use snake skin or python skin. In order to improve the tensioning degree of the left sound-insulating cloth leaf 3 and the right sound-insulating cloth leaf 4, the two outer ends of the left sound-insulating cloth leaf 3 and the right sound-insulating cloth leaf 4 are respectively connected with a traction rope 5, and the outer ends of the traction ropes 5 on the two sides are respectively connected with an elastic traction component. The resilient traction means may be implemented in a number of different configurations, for example, the present embodiment employs a drive mechanism as shown in fig. 3. As shown in fig. 2, a driving mechanism for driving the external gear sleeve 2 to rotate and stop is installed on the sound cavity wall at one end of the connection column 1. Referring to fig. 3, two shaft sleeves 12 are fixed on the sound cavity wall, adjusting screws 11 are sleeved in the two shaft sleeves 12, the portion, located between the two shaft sleeves 12, of each adjusting screw 11 is composed of a threaded section 13, an adjusting handle 14 is installed at the tail end of each adjusting screw 11, a yielding hole 15 is formed in the sound cavity wall at the tail end of each adjusting screw 11, and each adjusting handle 14 is located in the yielding hole 15. When the sound cavity acoustic resistance is properly increased in the sound cavity of the Chinese zither or the Chinese zither, the acoustic resistance degree can be changed, and the function that the acoustic resistance material is in a tensioning state is always kept, so that the acoustic resistance degree can be adjusted according to the self characteristics of different Chinese zithers or Chinese zithers, and the optimal configuration is achieved. The driving mechanism provided in fig. 3 has a deceleration adjusting function, satisfies fine adjustment characteristics, and can ensure that the outer gear sleeve 2 is stopped at any time, thereby controlling the degree of expansion of the left sheet 3 and the right sheet 4 of the soundproof cloth. The user can also tune himself according to his own tuning requirements. The invention adopts the mode of sound resistance adjustment to improve the sound transmission quality by means of a proper amount of expanded sound resistance materials (or resonance caused by sound resistance at the same time), but does not ensure the problem of negative influence possibly caused by blindly expanding the sound resistance.
The adopted elastic traction components are arranged on the sound cavity walls at symmetrical positions on two sides of the connecting column 1, as shown in figures 2 and 4, fixing columns 7 are respectively arranged through fixing seats 8, and deep groove rope wheels 6 are respectively sleeved on the fixing columns 7 on the two sides. The haulage rope 5 of the cloth left side page or leaf 3 that gives sound insulation and the cloth right side page or leaf 4 that gives sound insulation twines respectively in the deep groove rope sheave 6 that corresponds, and 5 individual layers of haulage rope twine as far as possible can be ensured to deep groove rope sheave 6 to ensure that the cloth left side page or leaf 3 that gives sound insulation and the cloth right side page or leaf 4 that gives sound insulation steadily stretch out and draw back. And a torsional spring 9 is connected between each deep groove rope wheel 6 and the corresponding fixed seat 8, so that when the adjusting screw 11 is driven to rotate, the external gear sleeve 2 can be driven to rotate clockwise or anticlockwise, and then the left leaf 3 and the right leaf 4 of the sound-insulating cloth on the surface of the external gear sleeve 2 are pulled to expand or contract in a curling manner, the sound resistance degree can be changed, and the function of keeping the sound-insulating material in a tensioning state all the time is achieved.
Example 2: the method is characterized in that proper modification is carried out on the basis of embodiment 1, an elastic traction part is replaced by a tension spring or a rubber belt, the outer ends of traction ropes 5 on two sides are respectively connected with the corresponding tension spring or rubber belt, and the tension springs or the rubber belts on the two sides are respectively fixed on the sound cavity walls at the symmetrical positions on the two sides of the connecting column 1.
Claims (4)
1. A guzheng musical instrument sound cavity resistance volume adjusting mechanism is characterized in that a connecting column is fixed between the upper wall and the lower wall of a sound cavity, an outer gear sleeve is sleeved outside the connecting column, gears are distributed on all or part of the outer surface of the outer gear sleeve, a left sound-insulating cloth leaf and a right sound-insulating cloth leaf are respectively fixed at symmetrical positions on the circumferential side of the outer gear sleeve, and two outer ends of the left sound-insulating cloth leaf and the right sound-insulating cloth leaf are respectively connected with a traction rope; the outer ends of the traction ropes on the two sides are respectively connected with an elastic traction component; and a driving mechanism for driving the outer gear sleeve to rotate and stop is arranged on the wall of the sound cavity at one end of the connecting column.
2. The device for adjusting the sound cavity resistance and volume of a zither instrument according to claim 1, wherein the elastic traction component is a sound cavity wall which is symmetrically arranged at two sides of the connecting column, fixing columns are respectively installed on the sound cavity wall through fixing seats, deep groove rope wheels are respectively sleeved on the fixing columns at the two sides, and the traction ropes of the left sheet and the right sheet of the sound-insulating cloth are respectively wound in the corresponding deep groove rope wheels; and torsion springs are connected between each deep groove rope wheel and the corresponding fixed seat.
3. The device of claim 1, wherein the elastic pulling member is a tension spring or a rubber band, the outer ends of the pulling ropes at two sides are respectively connected to the tension spring or the rubber band, and the tension springs or the rubber bands at two sides are respectively fixed on the sound cavity walls at symmetrical positions at two sides of the connecting column.
4. The device of claim 1, wherein the driving mechanism for driving the external gear sleeve to rotate and stop is formed by fixing two sleeves on the sound cavity wall and sleeving adjusting screws in the two sleeves, the adjusting screws are located in a partial thread section between the two sleeves, an adjusting handle is installed at the end of the adjusting screws, a abdicating hole is formed in the sound cavity wall at the end of the adjusting screws, and the adjusting handle is located in the abdicating hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910063370.2A CN109887477B (en) | 2019-01-23 | 2019-01-23 | Sound cavity volume resistance adjusting mechanism for Chinese zither musical instrument |
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| CN201910063370.2A CN109887477B (en) | 2019-01-23 | 2019-01-23 | Sound cavity volume resistance adjusting mechanism for Chinese zither musical instrument |
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| CN109887477A CN109887477A (en) | 2019-06-14 |
| CN109887477B true CN109887477B (en) | 2020-10-30 |
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| CN207319662U (en) * | 2017-10-25 | 2018-05-04 | 王超慧 | A kind of bireflectance Chinese lute |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202771783U (en) * | 2012-09-25 | 2013-03-06 | 石界中 | Novel Jinghu |
| CN207663777U (en) * | 2017-12-12 | 2018-07-27 | 滁州职业技术学院 | In a kind of You Keli |
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| CN1584972A (en) * | 2004-06-01 | 2005-02-23 | 张帆 | String music instrument with resonator with co-vibration sheet |
| CN2836158Y (en) * | 2005-10-14 | 2006-11-08 | 黄丽娜 | Sound amplification and resonance device |
| US7863507B2 (en) * | 2008-10-27 | 2011-01-04 | Ayers Jeffrey L | Semi-hollow body for stringed instruments |
| CN102074222A (en) * | 2010-01-26 | 2011-05-25 | 郑福建 | Resonant violin |
| CN201673663U (en) * | 2010-06-17 | 2010-12-15 | 湖南城市学院 | Lute |
| CN105830146A (en) * | 2013-12-19 | 2016-08-03 | 株式会社歌斐木 | Tone-controlled functional acoustic guitar |
| CN203858851U (en) * | 2014-06-03 | 2014-10-01 | 蒋元魁 | Violin pronunciation auxiliary device |
| CN204440884U (en) * | 2015-01-21 | 2015-07-01 | 文正球 | A kind of low Hu and resonant tank |
| CN207319662U (en) * | 2017-10-25 | 2018-05-04 | 王超慧 | A kind of bireflectance Chinese lute |
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