Double-skin Erhu cylinder

Abstract

The utility model belongs to the field of traditional musical instrument Erhu manufacturing, and relates to a double-skin Erhu cylinder, which comprises a cylinder main body, one end of the cylinder main body is provided with a skin assembly, the skin assembly sequentially comprises a pressing ring, an outer supporting ring and an inner supporting ring from outside to inside, and one end of the inner supporting ring far away from the cylinder is covered with an inner skin. The outer edge of the inner skin is tightly pressed on the inner supporting ring by the outer supporting ring, one end of the outer supporting ring far away from the urheen tube is covered with the outer skin, the outer edge of the outer skin is tightly pressed on the outer supporting ring by the pressing ring, and the thickness of the inner skin is different from that of the outer skin. According to the utility model, the urheen skin assembly design of the double-layer urheen skin is adopted, and the thickness of the inner urheen skin is different from that of the outer urheen skin, so that the comprehensive performance of the urheen during playing is better, and excellent timbre and volume meeting the requirements of a musician can be produced in a high-pitch area and a low-pitch area.

Description

Technical Field

[0001] This utility model belongs to the field of traditional musical instrument erhu making, and relates to a double-skin erhu soundbox. Background Technology

[0002] The soundbox is part of the erhu. Traditionally, the erhu's skin is made by directly covering the wooden soundbox with a piece of python skin. Before covering, glue is applied to the rim of the soundbox, and then the shaped python skin is stretched taut and glued directly to the soundbox. After the glue dries, the excess skin is sawed off. The quality of the erhu's sound depends on the thickness and tension of the python skin. The vibration quality and tension of the python skin determine the erhu's frequency response, generally from 293.66Hz to 1318Hz. Frequency above 1000Hz experiences significant amplitude attenuation, which is reflected in the performance. The problem with the erhu is that the sound becomes noticeably quieter when playing the outer string in the fourth position. However, when the music reaches its climax, the emotion usually needs to be intense and the explosive power needs to be strong, so the volume of the erhu needs to be louder. But to the disappointment of the performers, the volume of the erhu becomes quieter in the high register. In order to improve the high-pitched performance of the erhu, the erhu maker can only thin the python skin. The python skin is stretched too tightly, which increases the tension of the python skin. The excessive tension brings another side effect: the bass performance of the erhu is not good enough, and the volume of the middle and low frequencies is too low. This is a trade-off. Utility Model Content

[0003] This utility model addresses the aforementioned problem of poor overall performance of the erhu by providing a double-skin erhu resonator.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a double-skin erhu resonator, comprising a resonator body, a skin assembly provided at one end of the resonator body, the skin assembly comprising, from the outside to the inside, a pressing ring, an outer support ring, and an inner support ring, the end of the inner support ring away from the resonator being covered with an inner skin, the outer support ring pressing the outer edge of the inner skin onto the inner support ring, the end of the outer support ring away from the resonator being covered with an outer skin, the pressing ring pressing the outer edge of the outer skin onto the outer support ring, the inner skin and the outer skin having different thicknesses.

[0005] Preferably, the distance between the inner skin on the end face of the inner support ring and the outer skin on the end face of the outer support ring is 0.1mm to 0.3mm.

[0006] Preferably, the thickness of the inner skin is 0.3mm to 0.5mm.

[0007] Preferably, the thickness of the outer skin is 0.1 mm.

[0008] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0009] This utility model adopts a double-layered skin assembly design, and the inner and outer skins are of different thicknesses, which makes the erhu perform better overall during performance and can produce excellent tone and volume in the high and low registers that meet the needs of musicians. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 An exploded view of the soundbox of a double-skinned erhu;

[0012] Figure 2 An exploded view of the guitar skin assembly;

[0013] Figure 3 This is a cross-sectional view of the guitar skin assembly;

[0014] Figure 4 This is a magnified view of a portion of the cross-sectional structure of the guitar skin assembly.

[0015] In the above figures, 1. Body of the instrument; 101. Pressure ring; 102. Outer skin; 103. Outer support ring; 104. Inner skin; 105. Inner support ring; 2. Skin assembly; 3. Pin hole. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, to ensure excellent sound performance in both the high and low registers of the erhu, a double-skin erhu resonator includes a resonator body 1. A skin assembly 2 is located at one end of the resonator body 1. The skin assembly 2, from the outside in, includes a pressing ring 101, an outer support ring 103, and an inner support ring 105. The end of the inner support ring 105 furthest from the resonator is covered with an inner skin 104. The outer support ring 103 presses the outer edge of the inner skin 104 against the inner support ring 105. The end of the outer support ring 103 furthest from the resonator is covered with an outer skin 102. The pressing ring 101 presses the outer edge of the outer skin 102 against the outer support ring 103. The inner skin 104 and outer skin 102 have different thicknesses. This difference in thickness determines the different sound performances of the inner and outer skins in the high and low registers. Furthermore, adhesive is applied to further enhance the tightness of the connections between the components in the skin assembly.

[0019] With the above configuration, during erhu playing, the pressure of the bridge causes point contact between the inner skin 104 and the outer skin 102. When the strings vibrate, they drive the bridge to vibrate together with the inner and outer skins 104 and 102. Furthermore, this invention uses an organic polymer film for the skin, which is thinner than traditional python skin and can be produced to the required thickness. Therefore, this invention has a faster frequency response, larger amplitude, and better overall performance, resulting in a significantly louder erhu volume compared to traditional python skin, especially when playing high notes. The fundamental frequency determines the pitch, while harmonics determine the timbre. Because the harmonic content of the double-layered skin erhu is higher than that of the traditional python skin erhu, its sound characteristics are particularly prominent.

[0020] Furthermore, the distance between the inner skin 104 on the end face of the inner support ring 105 and the outer skin 102 on the end face of the outer support ring 103 is 0.1mm to 0.3mm.

[0021] Furthermore, the thickness of the inner skin 104 is 0.3mm to 0.5mm.

[0022] Furthermore, the thickness of the outer skin 102 is 0.1 mm.

[0023] Furthermore, several pin holes 3 are provided on the end face of the body 1 near the skin assembly 2. The inner support ring 105 is provided with a pin corresponding to the pin holes 3. Strong adhesive is applied to the body 1 and the inner support ring 105, and then the pin is inserted into the pin hole 3. After the adhesive dries, the inner support ring 105 is fixed to one end of the body 1.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A double-skin erhu resonator, comprising a resonator body, characterized in that, The body of the instrument has a skin assembly at one end. The skin assembly includes, from the outside to the inside, a pressing ring, an outer support ring, and an inner support ring. The end of the inner support ring away from the body is covered with the inner skin. The outer support ring presses the outer edge of the inner skin onto the inner support ring. The end of the outer support ring away from the body is covered with the outer skin. The pressing ring presses the outer edge of the outer skin onto the outer support ring. The inner and outer skins have different thicknesses.

2. The double-skin erhu resonator according to claim 1, characterized in that, The distance between the inner skin on the end face of the inner support ring and the outer skin on the end face of the outer support ring is 0.1mm to 0.3mm.

3. The double-skin erhu resonator according to claim 2, characterized in that, The thickness of the inner skin is 0.3mm to 0.5mm.

4. The double-skin erhu resonator according to claim 3, characterized in that, The thickness of the outer skin is 0.1 mm.

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