JP6744509B1 - Air lead instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for an air lead musical instrument so that even a beginner or other person having a poor performance ability can easily produce a sound.
An air-reed musical instrument has a structure in which a blow-out port 3 is provided at a mouth 2 of a cylindrical tube having an outer surface corresponding to a lip plate. The blower opening 3 is a hole from the opening end 4 for blowing the exhaled air to the discharge opening 5, a convex portion 9 for controlling the direction of the expiratory air flowing out from the singing mouth 2, and a surface that is continuous with the convex portion 9 and closes the upper opening end of the singing mouth 2. , A side wall 6 for fixing the blower opening 3 to the song opening 2. The exhaled air blown into the opening end 4 is ejected from the ejection port 5 and flows into the song port 2. Next, the exhaled air circulates in the head tube 1 and flows out from the mouth 2 along the convex portion 9. Exhaled air flowing into and outflowing from the mouth 2 collides and coalesces in the vicinity of the surface of the convex portion 9 and goes out of the mouth 2, and the air lead function is exerted to produce sound. The windway is a path through which the exhaled air blown into the open end 4 goes out of the mouth 2, so that the aired musical instrument can easily make a sound by forming this path.
[Selection diagram] Figure 1

Description

The present invention relates to an air reed musical instrument that can easily produce a sound.

Examples of air lead instruments are flutes and recorders. The flute player presses the lower lip against the lip plate to create a particular embouchure (lip shape), and blows exhalation on the inner wall of the song to perform. A flute player can produce a rich sound over a wide range by adjusting the embouchure, exhalation, opening and closing of the tone hole.

However, adjusting the embouchure depends heavily on the performer's abilities. For this reason, it is difficult for a beginner or other person with poor playing ability to make the flute sound.

On the other hand, the recorder is provided with a windway (a path through which exhalation flows). Therefore, when the performer blows in the exhaled air from the windway outlet, the exhaled air is ejected from the other outlet and guided to the edge, so that a sound can be easily produced.

Open Utility Showa 52-144724 Public Utility Showa 63-157800 JP-A-3-184089 JP-A-4-11287 JP-A-5-35261 Japanese Patent Laid-Open No. 5-197370 JP-A-7-129152 JP, 2017-68109, A JP, 2017-68110, A US Patent Application Publication No. 2014/0013925

Yoshinori Ando “Acoustics of Musical Instruments” 1971

A problem to be solved is that it is difficult for a beginner, such as a beginner, who has poor playing ability to produce the sound of the air lead musical instrument .

The present invention is most characterized in that the mouthpiece of the head tube is provided with a mouthpiece so that the sound of the air-reed instrument is easily produced.

The air-reed musical instrument of the present invention forms a windway by providing a mouthpiece at the song mouth, and a sound is easily produced when breath is exhaled. Further, this air-lead instrument has an advantage that the tone color and key operation are the same as those of conventional instruments.

FIG. 1 is a sketch drawing including the cross section of the air lead instrument of the present air lead instrument. FIG. 2 is a cross-sectional view of the mouthpiece of the air lead musical instrument. FIG. 3 is a sectional view of the air lead musical instrument.

The purpose of making it easy to produce the sound of an air-reed instrument was achieved by providing a mouthpiece in the song mouth without changing the tone or key operation.

FIG. 1 is a schematic view of a joint portion side including a cross section of the air lead instrument of the present invention taken along a plane perpendicular to the head tube axis. FIG. 2 is a sectional view of the same state as FIG. FIG. 3 is a cross-sectional view of a vertical plane including the head tube axis taken along a plane parallel to the discharge port.

The embodiment of the air lead musical instrument of the present invention has a structure in which a blow mouth 3 is provided in the mouth 2 of a thick cylindrical tube. In the head tube of a conventional air-lead instrument, a lip plate is brazed with a riser sandwiched between thin-walled cylindrical tubes. The head tube 1 of the present invention is a cylindrical tube having a wall thickness equal to the total thickness of the three parts of the conventional head tube, the riser, and the lip plate, and the outer surface thereof is the same as the conventional lip plate surface. It has the same height and performs the same function as a lip plate. Except for this point, it has the same structure as the conventional head tube.

The mouthpiece 2 of the head tube 1 is an elliptical or rectangular hole having four rounded corners, which is the same as in the conventional air-lead instrument. 1 to 3 show a shape in which the mouthpiece 2 has an elliptical shape. The major axis of the ellipse is parallel to the head canal axis, and the minor axis is perpendicular to the head canal axis.

The blower port 3 has a vent hole from the opening end 4 to the ejection port 5, a convex portion 9 that controls the direction in which the exhaled air flows out from the singing port 2, and a semi-elliptical bottom surface that closes the upper opening end of the singing port 2. , A side wall 6 for fixing the blow-out port 3 to the song port 2.

The vent hole from the opening end 4 to the discharge port 5 has a structure in which the cross section is gradually narrowed to accelerate the flow rate of the exhaled breath. The discharge port 5 is a long and narrow gap (slit) that focuses exhaled air and ejects it. The ejection port 5 is located at a position displaced from the center of the song port 2 to the peripheral side, and the long side of the ejection port 5 is parallel to the major axis of the ellipse of the song port 2. When a perpendicular line is set up at the center of the discharge port 5 on the surface including the discharge port 5 and extends, it intersects with the inner wall 7.

The cross section of the convex portion 9 is approximated by a fan shape. The upper end of the fan-shaped arc is joined to the lower long side of the discharge port 5, and the lower end of the arc overlaps the major axis of the song port 2. Both ends of the protrusion 9 extended in the longitudinal direction are joined to the side wall 6. The bottom surface of the blower opening 3 is connected to the lower long side of the arc of the convex portion 9. This bottom surface is a semi-elliptical shape formed by dividing the elliptical shape of the song opening 2 by the major axis, and covers the upper opening end of the song opening 2 on the side opposite to the ejection opening 5. The convex portion 9 and the semi-elliptical bottom surface following the convex portion 9 control the direction of the exhaled air flowing out from the mouth 2.

The upper portion of the side wall 6 has a structure continuous with the ventilation hole from the opening end 4 to the discharge port 5, and supports the ventilation hole. Further, the side wall 6 is an integral structure that surrounds the convex portion 9 and the semi-elliptical bottom surface portion that follows the convex portion 9 and is continuous. The bottom surface of the side wall 6 has a cylindrical concave surface that has the same curvature as the outer surface of the head tube 1, and is fixed around the upper opening end of the song port 2. In this manner, the side wall 6 is integrally coupled with and supports each part structure of the blowout port 3, and fixes the blowout port 3 to the head tube 1.

Although the air lead musical instrument of the present invention has a structure in which the blow mouth 3 is provided at the mouth 2 of a thick-walled cylindrical pipe, the cylindrical pipe and the blow mouth 3 may be integrated. Further, even if the blow-out port 3 is fixed to the lip plate of a conventional air-lead instrument, the same function is achieved.

When the present invention is implemented, a difference from the conventional air-lead musical instrument is that a windway is formed. When the exhaled air is blown from the opening end 4, the exhaled air is ejected from the other ejection port 5, further flows into the singing port 2, and collides with the inner wall 7. Next, the exhaled air circulates in the head tube 1, and then flows along the convex portion 9 from the closed surface of the upper opening end of the mouthpiece 2. The exhaled air collides with the inhaled air from almost the side, and coalesces to go out of the singing port 2. A part of the windway of the present air lead musical instrument extends from the open end 4 to the outside of the singing mouth 2 and is formed by providing the head tube 1 with the blowing mouth 3.

When the windway is formed, the air pressure inside the head tube 1 is increased by the exhaled air flowing into the mouthpiece 2 and reduced by the exhaled air flowing out. Repeated pressurization-depressurization of the air pressure in the pipe produces a sound. The state in which this air lead function is exhibited is when the exhaled air flowing out from the mouth 2 along the convex portion 9 collides and coalesces with the inflowing air and is pushed out of the mouth 2 with high efficiency. This state is created by appropriately adjusting the structure of the air outlet 3.

It is expected that the use of beginners will increase because air-leaded musical instruments that have a mouthpiece at the mouth of the head can easily produce sound. Moreover, it can be expected that a person who has interrupted the air lead musical instrument will try to play again.

1 Head Tube 2 Blow Port 3 Blow Port 4 Opening End 5 Discharge Port 6 Side Wall 7 Inner Wall 8 of Head Port Inner Wall 9 of Head Tube Convex Portion

Claims (1)

An air-reed musical instrument having a mouthpiece provided in a mouthpiece of a lip plate, or a mouthpiece of a cylindrical tube having an outer surface corresponding to the lip plate, wherein exhaled air blown into one opening end is discharged from the other outlet. A vent hole that blows out and blows into the mouth, a convex part that has a longitudinal direction along the lower long side of the discharge port, and a cross section that approximates a fan shape, and the long side of the lower end of the convex part are connected to the upper part of the mouth An air reed musical instrument having a mouthpiece, the air lead musical instrument having a surface covering an opening end .

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