Mouthpiece

Abstract

To provide a mouthpiece of a brass instrument allowing a person who blows (a player) to easily express "a flow of breath" (sound and speed) exactly as intended by himself / herself.SOLUTION: A mouthpiece 10 includes spiral grooves Ti (a first spiral groove Ta, a second spiral groove Tb, a third spiral groove Tc, a fourth spiral groove Td and a fifth spiral groove Te) formed at a section (a spiral groove forming section 22) from a throat part 19 to a bottom surface of a cup inner surface 12 (referred to as a cup inner surface bottom part 15). The breath can be thus made to pass in a spiral shape, so that "a flow of breath" (sound and speed) can be expressed exactly as intended by a person who blows (a player).SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a mouthpiece for a brass instrument or the like. [Background technology]

[0002] Generally, brass instruments (aerophones) include trumpets, trombones, euphoniums, and tubas, and sound produced by the vibration of the lips is resonated in the body of the instrument and emitted from the bell. In these brass instruments, the mouthpiece, which is the part that the mouth places on and into which the breath is blown, and its component part, the main purpose of forming the sound source, are important. When the mouthpiece is opened with the lips lightly pressed together and the breath is blown out, vibrations occur in the gap between the upper and lower lips. These vibrations are transmitted to the trumpet section.

[0003] Brass is often used as the material, but in addition to stainless steel and titanium, various other materials such as hard wood and plastic have been developed to prevent metal allergies. For example, the following application is a patent document 1 relating to such a mouthpiece.

[0004] Patent Document 1 discloses a mouthpiece for a brass instrument in which grooves or irregularities are formed in at least a portion of the inner wall area of ​​the throat, making it possible to increase the blowing resistance.

[0005] Furthermore, paragraph

[0030] of Patent Document 1 states, "The cross-sectional shape, interval, direction, etc. of the groove 30 are not particularly limited, but Examples 1 to 4 are shown in the enlarged cross-sectional view of FIG. 2. In FIG. 2(a), the cross section of the groove 30 is triangular, the depth of the groove 30 is W1, and the grooves are formed at a predetermined interval L1 in the circumferential direction of the throat, forming a plurality of annular grooves..., a plurality of linear grooves."

[0006] Furthermore, paragraph

[0031] states, "...the groove 30 is an annular groove, but it may be a spiral groove..." [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 4278112 Summary of the Invention [Problem to be solved by the invention]

[0008] However, in Patent Document 1, the main purpose is to provide a function for increasing the blowing resistance (pressure inside the cup) by forming grooves or uneven resistance parts in the throat. For this reason, the intervals between the grooves are narrow, and the groove formation section is also narrow.

[0009] Furthermore, paragraph 0030 of Patent Document 1 states that "...a plurality of annular grooves are provided." However, the area in which the annular grooves are formed is narrow. Furthermore, paragraph

[0031] of Patent Document 1 states, "...the groove 30 is an annular groove, but it may be a spiral groove..." Judging from the description of Patent Document 1, this spiral groove is a single spiral groove.

[0010] Generally, acoustically, it is preferable that the square wave sound pressure change caused by opening and closing the lips be transmitted to the bore with a certain degree of acoustic resistance and that breath and vibration be transmitted smoothly.

[0011] In other words, even if a groove is formed in the throat as in Patent Document 1, it is only to obtain the blowing resistance of a short circular groove or a single spiral groove, so it still cannot express the "breath flow" that the player imagines.

[0012] Therefore, this is not a mouthpiece that not only makes leaps and slurs smoother from low to high registers, but also has a positive effect on tone and resonance.

[0013] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a mouthpiece that can easily reproduce the player's best sound as it is. [Means for solving the problem]

[0014] The mouthpiece according to the present invention comprises: The inside is mortar-shaped. A mouthpiece for a musical instrument, the inner diameter of which is gradually reduced from the rim side of the mouthpiece to a throat part having a circular hole, A front region of the throat portion on the inner surface of the cup portion. Tapered shape Rim on the bottom of the cup Top edge of the side A plurality of spiral grooves are provided around the inner surface of the hole of the throat portion, The spiral groove is Each of the inner surfaces of the throat holes Bore side From one end The cup inner bottom surface portion extends to the upper end of the rim side. The wires are rotated in the circumferential direction while moving in the longitudinal direction so as not to overlap each other. And, Each of the spiral grooves is A scribing tool is used to scribe from the one end to the upper end The width and depth are gradually increased as the The cut is made so that the width and depth gradually decrease from the vicinity of the upper end toward the upper end, The rim of the cup portion side The field of view shape from The gist is that the throat portion has a multiple spiral shape with the hole at the center. Effect of the Invention

[0015] As described above, according to the present invention, the multiple spiral grooves allow breath to pass through at higher speeds than with conventional mouthpieces, allowing players (also known as performers) who play in the low to high ranges to reproduce the best "breath flow" (sound and speed) intended. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a schematic explanatory diagram of a mouthpiece of the musical instrument according to the present embodiment. [Diagram 2] FIG. 1(b) is a detailed cross-sectional view of FIG. [Diagram 3] 2 is an enlarged view of a spiral groove forming portion 22 of the mouthpiece 10. FIG. [Figure 4]FIG. 2 is an explanatory diagram of only the first spiral groove Ta. [Diagram 5] Cross-sectional views of each part (1). [Figure 6] Cross-sectional views of each part (2). [Figure 7] Cross-sectional views of each part (3). BEST MODE FOR CARRYING OUT THEINVENTION

[0017] The following describes an embodiment of the mouthpiece of the present invention. The embodiment shows the most preferred embodiment of the invention, and the invention is not limited thereto.

[0018] The mouthpiece of this embodiment is primarily used for brass instruments such as tubas, trumpets, trombones, and euphoniums, and may be made of brass, stainless steel, titanium, or other materials such as hard wood or plastic to prevent metal allergies. In this embodiment, the mouthpiece of brass instrument is described as an example. The mouthpiece of brass instrument of this embodiment forms a plurality of spiral grooves on the inner surface of throat, and can obtain the following effects and so on compared with the mouthpiece of conventional brass instrument. (1) In addition to the basic performance of excellent tone, resonance, and ease of playing, it also enables playing techniques that take advantage of fast air flow. (2) Greatly enhances and broadens the player's expressive capabilities. (3) Ultimately, this will create new possibilities for brass instrument performance and expression. Furthermore, by forming multiple spiral grooves on the inner surface of the throat (described later), (4) it becomes easier to blow hard. (5) I have become able to maintain my stamina while performing. (6) It has become easier to change the speed and speed of playing. (7) It has become easier for the player to produce the sound he or she intends. This makes it possible to develop completely new playing techniques and expressions. A specific example of the structure of a mouthpiece for a brass instrument that achieves the above-mentioned effects will be described below as an embodiment.

[0019] Fig. 1 is a schematic diagram of a mouthpiece of a musical instrument according to the present embodiment. Note that Fig. 1 is a schematic diagram showing that a spiral groove is formed on the inner surface, and the details will be described later in Fig. 3. Fig. 1(a) shows the front of the cup portion, and Fig. 1(b) shows a cross section of the mouthpiece. Fig. 1(a) and Fig. 1(b) are cross sections of the mouthpiece 10 of the present embodiment when it is placed horizontally, and the horizontal axis is indicated as "X".

[0020] Also, Fig. 1(a) is a front view of the cup, and the X-axis passing through the center of the cup is indicated as "Xp". As shown in Fig. 1(b), the mouthpiece 10 of this embodiment has spiral grooves Ti (Ta, Tb, ..., Te) formed in a section (also called spiral groove forming section 22) that spans from the throat section 19 to the bottom surface of the cup inner surface 12 (hereinafter called the cup inner surface bottom surface section 15). However, the spiral groove Ti in Fig. 1(b) shows a cross section of the spiral groove (also called the tornado groove) engraved on the inner surface when viewed from one direction.

[0021] As shown in Fig. 1(a) and Fig. 1(b), the spiral groove Ti is composed of a first spiral groove Ta, a second spiral groove Tb, a third spiral groove Tc, a fourth spiral groove Td, and a fifth spiral groove Te, and is mathematically similar to a Fermat spiral, a hyperbolic spiral, etc. As shown in Fig. 1(a) and Fig. 1(b), the mouthpiece 10 of this embodiment is provided (carved) with the spiral grooves Ti (Ta, Tb, ..., Te) from the throat portion 19 to the cup inner bottom surface portion 15 so as not to overlap each other.

[0022] The spiral grooves Ti (Ta, Tb, . . . , Te) are formed in a spiral shape with approximately equal intervals (details will be described later). Furthermore, as shown in FIG. 1(a), when the cup is viewed from the front, the spiral groove Ti (Ta, Tb, . . . , Te) has a spiral shape.

[0023] The other end of the first spiral groove Ta on the cup inner surface bottom portion 15 is referred to as (a1), the other end of the second spiral groove Tb is referred to as (b1), the other end of the third spiral groove Tc is referred to as (c1), the other end of the fourth spiral groove Td is referred to as (d1), and the other end of the fifth spiral groove Te is referred to as (e1).

[0024] This spiral groove Ti (Ta, Tb, ..., Te) creates a vortex in the air flow inside the mouthpiece, increasing the speed (making the breath faster) and power. As a result, the range of skill of the player has been expanded, and it is now possible to easily reproduce sounds from low to high registers as intended. In other words, not only has it become smoother, but the tone and resonance have been positively affected as the player is able to express himself more clearly.

[0025] Further, the description will be given with reference to Fig. 1(a) and Fig. 1(b). As shown in Fig. 1(b), the mouthpiece 10 is formed in a cylindrical shape. The mouthpiece 10 is composed of a cup portion 17, a bore portion 13, and a throat portion 19. The cup portion 17 (also simply called a cup) has an inner cup surface 12 formed in a mortar shape (it may be a U-cup or a V-cup). The rear portion of the bore portion 13 is called a backbore 16.

[0026] A rim 14 is formed on the portion of the cup portion 17 that comes into contact with the lips. The inside diameter of the throat portion 19 is the narrowest in the mouthpiece 10, and the inside diameter becomes larger toward the bore portion 13. In addition, mouthpiece 10 of the present embodiment has a total length L1 of approximately 98 mm (±3 mm), a length of bore portion 13 of approximately 43 mm, and a length of spiral groove formation portion 22 of approximately 26 mm (can be 25 mm to 27 mm).

[0027] The shank 18 is also shown in Fig. 1(b). The inner wall of the mouthpiece 10 of this embodiment is indicated as "20", and the outer wall is indicated as "21". The horizontal axis is indicated as "X". In Fig. 1(a), the cup center (X-axis) is indicated as "Xp". Furthermore, in this embodiment, the section from the end of the rim 14 (the part that the lips touch) to the cup inner surface bottom part 15 is described as a cup main body part 23. Also, in Fig. 1(b), a shank 11 is described.

[0028] Figure 2 is a detailed cross-sectional view of Figure 1(b). Explanation of the same reference numerals as in Figure 1 will be omitted. In Figure 2, the spiral grooves Ti (Ta, Tb, ..., Te) are engraved on the inner surface of the cylinder. The spiral grooves Ti (Ta, Tb, ..., Te) are written as "Ta'", "Tb'", "Tc'", "Td'", and "Te'" when viewed from one direction, and "Ta'", "Tb'", "Tc'", "Td'", and "Te'" when viewed from the opposite direction. These are "cut (by a scribing tool)" in a spiral shape at intervals of about 5 mm (3 mm to 8 mm) (on the horizontal axis).

[0029] That is, the spiral grooves Ti (also called notches) are engraved in the section of the spiral groove forming portion 22 so that each groove completes one rotation (360 degrees). For example, the first spiral groove Ta The ward It rotates once (360 degrees: Ta´, Ta´´) in the space La (20 mm).

[0030] The reason why the spiral groove Ti is narrower at the top and bottom is because the spiral groove is drawn as seen from the side. These spiral grooves will be described in detail with reference to FIG. The dimensions of mouthpiece 10 of this embodiment will be further described with reference to Figure 2. Length L24 (on the horizontal axis) of rim 14 is approximately 10 mm (8 mm to 12 mm) from the end of rim 14 (the part that the lips touch: hereinafter referred to as the rim end).

[0031] The length L10 of the cup body 23 from the rim end is about 29 mm (27 mm to 32 mm), and the length L14 of the cup portion 17 is about 39 mm (37 mm to 42 mm). The length L26 of the bore portion 13 is about 43 mm (40 mm to 45 mm). Furthermore, the length of L3 shown in FIG. 2 is about 55 mm (53 mm to 57 mm), and L12 is about 34 mm (32 mm to 36 mm). On the other hand, the cup outer diameter φ1 is about 47 mm (45 mm to 49 mm), and the cup inner diameter φ3 is about 33 mm (32 mm to 35 mm).

[0032] The rear end outer diameter φ10 of the bore portion 16 is about 13 mm (11 mm to 15 mm), and the rear end inner diameter φ12 of the bore portion 16 is about 12 mm (10 mm to 13 mm). Furthermore, the outer diameter φ14 in FIG. 2 is about 7.8 mm (7.5 mm to 8.0 mm). Incidentally, φ30 to φ34 and φ16 will be described with reference to FIG.

[0033] Fig. 3 is an enlarged view of the spiral groove formation portion 22 of the mouthpiece 10. In Fig. 3, the same reference numerals as in the above figure will not be described. In Fig. 3, "Ta", "Tb", "Tc", "Td", and "Te" are indicated by dotted lines. Also, "Ta", "Tb", "Tc", "Td", and "Te" are indicated by solid lines. In this embodiment, the vertical axis is "Z", the depth axis is "Y", and the horizontal axis is the X axis.

[0034] As shown in Fig. 3, one end of each of the spiral grooves Ti starts from one side of the inner surface near FF (at approximately the same position). The distance between them in the Z-axis direction is a first predetermined distance k (approximately 4 mm to 6 mm). Similarly, the other ends ((a1), (e1), (d1), (c1), (b1)) of the spiral grooves Ti are terminal positions near AA.

[0035] Furthermore, the other ends of these grooves ((a1), (e1), (d1), (c1), (b1)) are positioned at a second predetermined interval (approximately 5 mm to 7 mm) on the bottom surface 15 of the inner surface of the cup portion 17, as shown in FIG. 5 described later.

[0036] On the other hand, the inner diameter φ30 is about 16 mm (15 mm to 17 mm), the inner diameter φ34 is about 9 mm (8 mm to 11 mm), and the inner diameter φ16 (between E1 and E2) is about 8.3 mm (8 mm to 9 mm).

[0037] In addition, in Fig. 3, the "cutting" depth (0.1mm to 0.2mm) is indicated by a dotted line and written as "ma". Furthermore, the spiral groove Ti has a cutting width (scribing width). For example, as shown in Fig. 4 described later, the cutting width Tah (Tah', Tah') of the first spiral groove Ta is about 0.4mm to 0.8mm between Ta1 and Ta2.

[0038] That is, the spiral groove forming portion 22 of the mouthpiece 10 of the present embodiment consists of a first spiral groove Ta (Ta', Ta''), a second spiral groove Tb (Tb', Tb''), a third spiral groove Tc (Tc', Tc''), a fourth spiral groove Td (Td', Td''), and a fifth spiral groove Te (Te', Te''). On the bore side, one ends of these grooves are positioned at a first predetermined interval, and the other ends of these grooves are each positioned at a second predetermined interval on the bottom surface portion (tapered) of the inner surface of the cup portion, and each of these positions is located at approximately the same distance from the one end on the bore side. This causes the sound waves generated by the vibrating lips to travel in a spiral motion, accelerating the air being blown.

[0039] Fig. 4 is an explanatory diagram of only the first spiral groove Ta. As shown in Fig. 4, in the section La, the first spiral groove Ta makes one rotation (360 degrees).

[0040] Next, we will explain the AA cross section (Fig. 5(a)), BB cross section (Fig. 5(b)), CC cross section (Fig. 6(a)), DD cross section (Fig. 6(b)), E-E cross section (Fig. 7(a)), and FF cross section (Fig. 7(b)) shown in Fig. 3. Note that explanations of the same reference numerals as in the above figures will be omitted.

[0041] FIG. 5(a) is an AA cross section, viewed from the front of the cup with the mouthpiece 10 held horizontally and the other end (a1) of the first spiral groove Ta positioned on the Z axis (this state is also called the 0 degree rotation state).

[0042] When the Z-axis of this AA section is defined as 0 degrees and angles (0° to 360 degrees, ...) are defined counterclockwise, we will explain the "twist" of the spiral groove Ti on the AA section (Figure 5(a)), BB section (Figure 5(b)), CC section (Figure 6(a)), DD section (Figure 6(b)), E-E section (Figure 7(a)), and FF section (Figure 7(b)).

[0043] 5(a), the angle θi (twist angle) between the other end a1 of the first spiral groove Ta, the other end b1 of the second spiral groove Tb, the other end c1 of the third spiral groove Tc, the other end d1 of the fourth spiral groove Td, and the other end e1 of the fifth spiral groove Te is about 72 degrees when measured around Xp. The outer diameter of the AA cross section is also described as φ35.

[0044] Also, on the AA cross section, the grooves are shallow near the other end a1, the other end b1, the other end c1, the other end d1, and the other end e1, so although they are not shown in the figure, they are written as ha1, hb1, hc1, hd1, and he1 to indicate that they have been "carved away" by the tool.

[0045] Figure 5(b) shows the BB cross section (approximately 5 mm from the AA cross section). In the BB cross section, the inner diameter φ32 is smaller than the inner diameter φ30 of the AA cross section, as compared to the AA cross section.

[0046] In addition, in the BB cross section shown in FIG. 5(b), compared to the A-A cross section, each of the first spiral grooves Ti is twisted by approximately 90 degrees (also referred to as a 90-degree rotation). In this embodiment, the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te in the BB cross section are written as a2, b2, b2, c2, d2, and e2. In addition, since the "scraping" of these parts is deep, they are written as ha2, hb2, hc2, hd2, and he2.

[0047] Figure 6(a) shows the CC section (approximately 5 mm from the BB section). Compared to the BB section, the CC section has an inner diameter of φ34 (smaller than the inner diameter of φ32 at the BB section). In addition, when comparing the CC cross section shown in Figure 6(b) with the A-A cross section, each of the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te is twisted by approximately 180 degrees (also referred to as 180-degree rotation).

[0048] In this embodiment, the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te on the CC cross section are written as a3, b3, c3, d3, and e3. Also, although the "scraping" of these parts is shallow, they are written as ha3, hb3, hc3, hd3, and he3.

[0049] FIG. 6(b) is the DD cross section (approximately 5 mm from the CC cross section). In the DD cross section, the inner diameter φ36 is smaller than the inner diameter φ34 of the CC cross section, as compared to the CC cross section. In addition, in the DD cross section, the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te are each twisted by approximately 270 degrees (also referred to as 270-degree rotation) as compared to the A-A cross section.

[0050] In this embodiment, the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te in the DD cross section are written as a4, b4, c4, d4, and e4. Also, the "scraping" of these parts are written as ha4, hb4, hc4, hd4, and he4.

[0051] Figure 7(a) shows the E-E cross section (approximately 2.5 mm from the D-D cross section). The E-E cross section has an inner diameter of φ16 compared to the D-D cross section.

[0052] In addition, when comparing the DD cross section with the A-A cross section, each of the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te is twisted by approximately 299 degrees (also referred to as a 299.43 degree rotation).

[0053] In this embodiment, the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te in the E-E cross section are written as a5, b5, c5, d5, and e5. Also, the "scrapes" of these parts are written as ha5, hb5, hc5, hd5, and he5.

[0054] Figure 7(b) shows the FF cross section (approximately 15 mm from the DD cross section). The FF cross section has a slightly larger inner diameter than the EE cross section.

[0055] In addition, when comparing the EE cross section with the A-A cross section, each of the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te is twisted by approximately 453 degrees (also referred to as a 453.5 degree rotation).

[0056] In this embodiment, the first spiral groove Ta, the second spiral groove Tb, the third spiral groove Tc, the fourth spiral groove Td, and the fifth spiral groove Te on the FF cross section are denoted as a6, b6, c6, d6, and e6.

[0057] Also, the scraping in this area is shallow, but to indicate that there is slight scraping, it is written as ha6, hb6, hc6, hd6, and he6.

[0058] That is, mouthpiece 10 of the present embodiment is formed with a plurality of spiral grooves extending from the bottom surface of the cup to the inner surface of the throat portion so as not to overlap in the longitudinal direction. As a result, the spiral grooves Ti give the breath passing through the cup and throat an appropriate direction (a feeling of straightening), and the breath passes through in a swirling manner, making it less tiring and providing stable low and high tones.

[0059] The inside diameter of the throat may be small, and the bore portion may be detachable. Furthermore, the cross section of the scraped shape of the spiral groove is not limited to a specific shape, and may be round or rectangular. Furthermore, although five spiral grooves have been described in the above embodiment, the number of spiral grooves may be more or less. [Explanation of symbols]

[0060] 10 Mouthpiece 12 Cup inner surface 13 Bore section 15 Bottom of the inner surface of the cup 17 Cup section 19 Throat 23 Cup body Ta 1st spiral groove Tb Second spiral groove Tc 3rd spiral groove Td 4th spiral groove Te 5th spiral groove

Claims

1. A mouthpiece for a musical instrument, the inner diameter of which is gradually reduced from the rim side of a mortar-shaped cup portion to a throat portion having a circular hole, A plurality of spiral grooves are provided around the inner surface of the cup portion from an upper end on the rim side of a bottom surface of the tapered cup inner surface, which is a front region of the throat portion on the inner surface of the cup portion, to an inner surface of the hole of the throat portion, The spiral groove is Each of the grooves is rotated in the circumferential direction while moving in the longitudinal direction from one end of the inner surface of the throat portion, which is the bore portion side, to the upper end of the rim side of the bottom surface of the cup inner surface, so as not to overlap with each other. Each of the spiral grooves is The cutting tool is used to gradually increase the width and depth from the one end toward the upper end, and gradually decrease the width and depth from near the upper end toward the upper end, The field of view shape from the rim side of the cup portion is A mouthpiece characterized in that the throat portion has a multiple spiral shape with the hole at the center.

2. The bottom surface of the cup is a portion having an inner diameter that is about half the inner diameter of the rim is an upper end on the rim side; The lower end is the other end of the inner surface of the throat portion relative to the one end, and The throat portion has a tapered shape that gradually widens from a portion having a minimum inner diameter toward the upper end side, The plurality of spiral grooves are A spiral groove section extends from one end of the throat portion to an upper end of the bottom surface of the cup inner surface, and the spiral grooves are spaced at substantially equal intervals along the spiral groove section, and are rotated at a twist of about 90 degrees at regular intervals along the spiral groove section as they advance in the longitudinal direction.

2. The mouthpiece according to claim 1, wherein the length of the spiral groove section is a predetermined multiple of the small section in which the twist from the one end to the upper end of the spiral groove is approximately 450 degrees.

3. The length of the small section multiplied by a predetermined number is The length is about five times that of the small section, 3. The mouthpiece according to claim 2, wherein the small section is about 5 mm.

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