Shamisen parts

Abstract

To solve problems of conventional Shamisens such that: Azumazawari and Jizawari are unstable in terms of Sawari sound, have low sound volume and reverberation, have low durability, and do not produce a Sawari sound over their entire sound range; aged Shamisens are difficult to produce the Sawari sound and depend on skills of a player to produce the Sawari sound; low tension on a skin makes it difficult to produce the Sawari sound; the sound is prone to missing notes due to a structure or lack of maintenance; and the Azumazawari sound has a two-step reverberation pattern.SOLUTION: A part A of a shamisen of the present invention is a one-piece shamisen part hammered from a single metal plate, having: a thread holder attachment part 1 for attaching to a thread holder 8; a flat plate part 2 having an upper part through which a first thread 5 passes, and a U-shaped groove 3 for the first thread; and an arched plate 4 having an upper part through which a second thread 9 and third thread 10 both pass.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the structure of parts related to improving the sound of a shamisen. [Background technology]

[0002] Traditionally, there are two types of kamizuma (top grooves) on shamisen: east and east. The east kamizuma has a groove carved at the point where the kamizuma groove meets the corner of the string storehouse. The groove makes contact with the apex of the kamizuma groove, generating the kamizuma sound. The east kamizuma is located closer to the string storehouse, and the kamizuma is raised and lowered with a screw, generating the kamizuma sound when it makes contact with the strings. However, with the decline in the number and skill of shamisen craftsmen, it has become increasingly difficult to carve the kamizuma grooves properly, especially for the jizawari. Furthermore, the quality of the neck and body themselves has declined significantly compared to the past. This has led to a situation where kamizuma rely on the tension of the skin itself to generate the jizawari sound, or on the height of the kamizuma, which is far removed from the essential structural aspects of the neck. Furthermore, while the sawari grooves for the jizawari should ideally be machined properly, for the reasons mentioned above, it is not possible to machine the sawari grooves properly based on musical instrument rationality, making it difficult to produce the jizawari sound. This has led to situations where people are forced to use the east sawari as a substitute, even if they do not want to. Furthermore, due to a lack of demand for shamisen, the prices of the shamisen itself and all the parts needed for maintenance have skyrocketed. This has led to a lack of reasonable prices for the shamisen itself and its parts, closing the door to shamisen playing, or forcing people who would like to play shamisen to give up due to the rising prices of everything. To put it in a very lofty way, the shamisen should be manufactured by deducing physical and logical values ​​from the perspective of the shamisen itself, and also from the perspective of its structure as a type of lute instrument. However, if these physical and logical values ​​have been forgotten and we no longer possess the ability to manufacture shamisen from these values, then this is a problem for the shamisen industry itself, and by extension, it can be said that the folk and traditional performing arts that are related to the shamisen are suffering from a terminal illness. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3208514 Public Relations Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional shamisen had the following problems: (1) The jizawari sound of the shamisen has a short reverberation, and due to its structure or improper maintenance, it is prone to missing notes and irregular sounds. This corresponds to the effects (1), (3), (9), and (11) of the invention. (2) In the case of a shamisen, the jizawari is less durable because the first string easily gets stuck. This corresponds to the effects (1) and (9) of the invention. (3) The durability of the sawari grooves in the jizawari (ground groove) of the shamisen is low. This corresponds to the effects (1), (9), and (11) of the invention. (4) The sound of the shamisen, "Azumazawari," has a two-stage reverberation. This corresponds to the effects (4) and (7) of the invention. (5) In the case of the shamisen, the jigō and tōjō sounds of the second and third strings are attenuated. This corresponds to the effects (2), (3), (4), and (6) of the invention. (6) Regarding the shamisen, neither the jizawari nor the eastzawari has a sawari sound in the high range. This corresponds to effect (5) of the invention. (7) Regarding the shamisen, the volume of the chisels is low for both the jizawari and eastzawari strings. This corresponds to the effects (2) and (6) of the invention. (8) Regarding the shamisen, the lingering sound of the jizawari and east zawari is short for all strings. This corresponds to the effects (3) and (6) of the invention. (9) Regarding the shamisen, all types of shamisen are less likely to develop "sawari" over time after manufacture. This corresponds to the effects (1), (8), and (9) of the invention. (10) Whether or not a shamisen can be played and whether or not it can be played stably depends largely on the skill of the player. This corresponds to the effects of the invention (10) and (12). (11) If the tension on the skin of a shamisen is low, the normal sound value cannot be obtained. This corresponds to the effects (6) and (11) of the invention. To solve these problems, the object of this invention is to provide a part and a shamisen that can produce a shamisen sound with increased volume and lingering resonance compared to conventional shamisen sounds, even for a beginner, by using only one part. [Means for solving the problem]

[0005] In order to achieve the above object, the shamisen part of the present invention is an integrated shamisen part stamped out from a single metal plate, and Attach to the side of A thread storage attachment part 1, a flat part 2 through which a first thread 5 passes, and , the above-mentioned provided on the surface of the flat plate portion 2 First Thread 5 thread path U-shaped ditch 3 and Ninoito 6 and third thread 7 It is characterized by having an arched plate 4 through which both of them pass above. [Effects of the Invention]

[0006] The shamisen parts of the present invention have the following effects corresponding to the problems (1) to (11) to be solved. The last digit of each number corresponds to the problem to be solved by the invention in the preceding paragraph, in relation to the effect of the invention. (1) The jizawari of a shamisen is simply made by making a groove at the corner of the string storehouse 8 and the sawari groove 9, but the shamisen part A of the present invention has the first string 5 resting on the flat part 2, which increases durability and contributes to maintaining the sawari groove, preventing missing notes and irregular sounds due to improper maintenance. The effects of the invention on problems (1), (2), (3), and (9) to be solved. (2) The volume of the sashimi produced by the present invention is greater than that of the conventional ji-sashimi and east-sashimi for all threads. (3) The aftertaste of the Sawari of the present invention is longer than that of the Ji-Sawari and Higashi-Sawari for all threads. Problems to be solved by the invention (1), (5), and (8). (4) The present invention prevents the occurrence of the east rustling sound in two stages. Problems (4) and (5) to be solved by the invention. (5) The present invention stabilizes the sawari across the entire range of all types of shamisen. (6) The shamisen with the present invention and normal skin tension produces a greater volume, especially the volume and lingering resonance of the sawari, than a shamisen with the conventional jizawari or eastzawari and normal skin tension. (7) The present invention can be used in traditional performing arts and classical music. In this case, the conventional east-side koma can be replaced with the east-side koma for the ji-side koma. Problems to be solved by the invention (4). (8) The present invention achieves the same effect of the sawari sound regardless of the type of shamisen, whether it is a newly manufactured shamisen or an old one. (9) The present invention significantly improves the durability of the first thread groove during ground scraping. Problems to be solved by the invention (1), (2), (3), (9). (10) The present invention allows for easy generation of "sawari" sounds regardless of the player's plectrum or tuning ability. (11) The present invention reduces the maintenance costs of shamisen. The present invention significantly reduces the frequency of skin replacement, eliminating the need for high-quality, expensive skin. Furthermore, as mentioned above, shamisen equipped with a jizawari have low durability in the sawari groove of the first string, so they require maintenance such as adjusting the sawari groove and neck. However, by using the present invention, this frequency can be significantly reduced. Problems (1), (3), and (11) solved by the invention. (12) By using the shamisen part A of the present invention, there is no need to purchase expensive plectrums, bridges, string pegs, skins, and necks, reducing the economic burden and disparities for each performer. In other words, there is no need for expensive materials and products, and everything is left largely to the performer's ability. Problems solved by the invention (10). [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of the shamisen components of the present invention. [Figure 2] FIG. 2 is a side view of the shamisen components of the present invention. [Figure 3]FIG. 1 is an overall view of a shamisen with the shamisen parts of the present invention attached to it. [Figure 4] An enlarged view of part A where the shamisen parts of the present invention are attached to the shamisen. DETAILED DESCRIPTION OF THE INVENTION

[0008] The following examples will be described in detail with reference to FIGS. [Example]

[0009] As explained above, component A of the shamisen of the present invention is composed of a rectangular string holder attachment portion 1, a square flat plate portion 2, a U-shaped groove 3, and an arched plate 4. Component A of the shamisen of the present invention comes in two sizes: a minimum size and a maximum size. Furthermore, a slight tolerance of approximately 1 mm is allowed for the size of each component A of the shamisen of the present invention. The reasons for these sizes will be described in detail later. The size of component A of the shamisen of the present invention is based on the thickness of the shamisen neck and strings to which it is attached. In any case, the sound produced by any type of shamisen will fall within the normal range of the minimum and maximum sizes of the two types of shamisen components of the present invention. However, it should be noted that the minimum size is generally used for Nagauta and Jiuta, while the maximum size is generally used for Kiyomoto, Tokiwazu, Gidayu, Tsugaru, and Minyo. The reason we say "basically" is because, as mentioned above, each shamisen is unique, and even for a Kiyomoto shamisen or a Tokiwazu shamisen, there is a possibility that the size of a part on a shamisen of the present invention may vary by 1 to 2 mm from the maximum size. However, the only place where this difference may occur due to individual differences in the shamisen is the string holder attachment point 1. Furthermore, part A on a shamisen of the present invention can be easily adapted for use on all shamisen, both new and old, and can be easily replaced with the upper bridge of the jizawari and azuma ridge of all shamisen.

[0010] Next, we will explain Component A of the shamisen of the present invention with reference to the figures. With reference to Figures 1 and 2, we will explain the shape, size, and geometric effect of each part of Component A of the shamisen of the present invention from the perspective of vibration transmission of the sound produced by the plucked string. Finally, Figures 3 and 4 explain how Component A of the shamisen of the present invention is attached to the shamisen, and note the influence and effect of Component A of the shamisen of the present invention. As shown in Figures 1 and 2, Component A of the shamisen of the present invention is composed of a rectangular string-holding attachment portion 1, a square flat plate portion 2, a U-shaped groove 3, and an arched plate 4. Component A of the shamisen of the present invention is attached to the side of the string-holding portion that faces the sac 10 of the shamisen. Its function is to absorb vibrations from Flat Plate 2 and transmit them to Arched Plate 4. It is a rectangle with a minimum length of 8 mm and a maximum length of 20 mm and a maximum length of 18 mm and a maximum width of 22 mm. Flat Plate 2 is necessary to collect vibrations from the first string 5. The minimum size is a square, 5mm long and 5mm wide, and the maximum size is 5mm long and 5mm wide. Only the flat section 2 extends from the thread holder attachment point and is folded 90 degrees toward the breast bag 10. The center of the surface of the flat section 2 has a U-shaped groove 3 extending from the thread holder attachment point 1. As mentioned above, the flat section 2 is square, but the groove does not extend along the entire vertical length of the square. This U-shaped groove extends halfway to the center of the flat section 2. This U-shaped groove 3 is a thread path for the first thread 5, and both the minimum and minimum sizes are 1mm wide, 0.5mm deep, and 3mm long. The U-shaped groove 3 is installed 2mm from the first thread 5 side of the flat section 2 in the vertical direction, in other words, at the center of the flat section 2, starting from the thread holder attachment point 1. The arched plate 4 also extends only the arched plate 4 portion from the thread holder attachment point and is formed into a semicircle toward the breast bag 10. When viewed from above, it has a rectangular shape as shown in Figure 1, and when viewed from the side, it has a semicircular shape as shown in Figure 2, and the vibration of the strings is sustained by the space below the second string 6 and the third string 7. The minimum size is 5 mm vertically (i.e., on both the flat plate 2 side and the third string 7 side) and 19 mm horizontally, the height is 3 mm on both the flat plate 2 side and the third string 7 side, and the height from the base of the flat plate 2 to the apex of the arched plate 4 is 11 mm, and the maximum size is 5 mm vertically (i.e., on both the flat plate 2 side and the third string 7 side) and 21 mm horizontally, the height is 3 mm on both the flat plate 2 side and the third string 7 side, and the height from the base of the flat plate 2 to the apex of the arched plate 4 is 21 mm.Comparing the arched plate 4 to Figure 2, the minimum and maximum sizes of the semicircular portion of the arched plate 4 are the same, with a diameter of 5 mm and a height of 3 mm. The only difference is the overall height, i.e., the height from the bottom edge of the string holder 1 to the apex of the semicircular portion, which is 11 mm for the minimum and 21 mm for the maximum. Furthermore, the thickness of the shamisen component A of the present invention is 1 mm or less across the entire surface, both at the minimum and maximum.

[0011] FIG. 3 is an overall view of a shamisen with component A of the present invention attached, and FIG. 4 is an enlarged view of the portion A where component A of the present invention is attached. The method of attaching component A of the present invention to a shamisen will be explained with reference to FIGS. 3 and 4. When component A of the present invention is attached, the apex of the arched plate 4 passes through the apex of the second string and the third string 7, and the first string 5 passes through the flat plate portion 2, or more precisely, the U-shaped groove 3, i.e., the first string path for the first string 5. As shown in FIG. 4, the string storage attachment portion 1 is fixed to the side of the string storage 8 with adhesive, and the flat plate portion 2 over which the first string passes is fixed to the sawari groove with adhesive. The first string 5 is installed so that it just barely touches the flat plate portion 2. This is the same as the conventional installation concept of the east and east sawari. In fact, it should not be different. Furthermore, the long side of the arch-shaped plate 4 on the side of the groove 9, i.e., the long side of the arch-shaped plate 4 on the side of the breast bag 10, may or may not be adhered to the groove 9. In other words, the long side of the arch-shaped plate 4 on the side of the groove 9 may either be floating in the air or adhered.

[0012] As explained above, shamisen component A of the present invention is a shamisen component forged from a single metal plate. It features a string storage attachment section 1 for attaching to the string storage section 8, a flat section 2 over which the first string 5 passes, a U-shaped groove 3 for the first string, and an arched plate 4 over which both the second string 9 and the third string 10 pass. In short, using shamisen component A of the present invention improves the durability of the sawari groove and reduces the frequency of maintenance, prevents missing notes and irregular sounds, increases the volume and reverberation of the sawari for all strings, prevents the two-stage occurrence of the eastern sawari sound, stabilizes the sawari sound, makes it usable in traditional and classical performing arts, produces an effective sawari sound even on older shamisen instruments, enhances the sawari sound regardless of the player's skill level, and reduces maintenance costs. The above are the effects of shamisen component A of the present invention; for details, see the section on the effects of the invention.

[0013] Finally, while in the previous section I listed the effects of the invention as a counterpart to the problem the invention aims to solve, I was unable to include them as they did not qualify as effects of the invention. Considering the future of the shamisen industry, I would like to clarify that shamisen component A of the present invention may contribute, however small, to the possibility of producing shamisen instruments themselves, the development of traditional instruments, and the preservation and development of folk and traditional performing arts that use the shamisen, even amidst social trends toward social justice and globalization. This is due to its potential to address the current trend toward animal welfare and environmental protection. Even with artificial skins, dog and cat skins are still the norm for shamisen skins. Given the current trends, it is possible that dog and cat skins may become unusable due to animal welfare considerations. As noted in the effects of the invention, shamisen component A of the present invention does not require skin tension. If this is the case, the frequency of skin replacements will decrease. Furthermore, shamisen component A of the present invention reliably produces a high-quality sound, even with artificial skins. Furthermore, shamisen part A of the present invention eliminates the need for expensive bachi (plectrums) used by various schools. In other words, there is no need for expensive bachi (plectrums) made from materials such as ivory and tortoiseshell that are in violation of the Washington Convention. From these perspectives, shamisen part A of the present invention can contribute to animal welfare and protection, compliance with the Washington Convention, and even the protection of endangered species. [Explanation of symbols]

[0014] 1 Thread holder attachment 2. The flat part over which the first thread passes 3. Ichinoito U-shaped groove 4 Arched board 5. One Thread 6 Second Thread 7 Third Thread 8. Ito Warehouse 9. Sawri Groove 10 Breast Bag

Claims

1. This is a one-piece shamisen part stamped out of a single metal plate, and is characterized by having a string holder attachment part (1) to be fixed to the side of the string holder (8), a flat plate part (2) through which the first string (5) passes, a U-shaped groove (3) on the surface of the flat plate part (2) that is a string path for the first string (5), and an arched plate (4) through which both the second string (6) and the third string (7) pass.

2. The smallest size of the thread storage attachment part (1) is 8 mm long and 20 mm wide, the flat part (2) is 5 mm long and 5 mm wide, the U-shaped groove (3) is 1 mm wide, 0.5 mm deep and 3 mm long, and is 2 mm long from the first thread (5) side of the flat part (2), the length of the arched plate (4) is 5 mm long on both the flat part (2) side and the third thread (7) side, and 19 mm wide, and the height is 3 mm on both the flat part (2) side and the third thread (7) side, and the height from the base of the flat part (2) to the apex of the arched plate (4) is 11 2. The shamisen parts according to claim 1, characterized in that the dimensions of the maximum size string holder attachment part (1) are 18 mm in length and 22 mm in width, the flat part (2) is 5 mm in length and 5 mm in width, the U-shaped groove (3) is 1 mm in width, 0.5 mm in depth and 3 mm in length, and is 2 mm from the first string (5) side in the vertical direction of the flat part (2), the arched plate (4) is 5 mm in length on both the flat part (2) side and the third string (7) side, and 21 mm in width, and 3 mm in height on both the flat part (2) side and the third string (7) side, the height from the base of the flat part (2) to the apex of the arched plate (4) is 21 mm, and the overall thickness is 1 mm or less.

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