CN211742622U - Improved vertical blowing Bawu - Google Patents

Abstract

An improved vertical-blowing Bawu is characterized in that a blowing nozzle is arranged at one end of a sound tube, a reed is arranged on the sound tube, a finger hole is formed in the sound tube, a straight sound tube (302) is fixedly connected with an oblique sound tube (301), a finger hole (303) is formed in the straight sound tube, and a reed (306) is arranged on the oblique sound tube; the sound bucket (2) is hollow, the upper end of the hollow part is provided with a circular vent hole (203) with a cross section, the lower end of the hollow part is provided with a circular connecting hole (202) with a cross section, the upper end of the hollow part is fixedly connected with the blowing nozzle (1), the lower end of the sound bucket is sealed and detachably connected with the inclined sound tube (301), the middle part of the hollow part is provided with an air cavity (201), and the cross section of the air cavity is. The utility model discloses convenient to use, the tone quality is pure, and sound is loud, and national color is showing, can extensively be applicable to the performance and use by beginner, is a neotype improvement bawu.

Description

Improved vertical blowing Bawu

Technical Field

The utility model relates to a bamboo pipe musical instrument, concretely relates to improvement vertical blowing bawu.

Background

Bawu, a reed pipe instrument, also called as 'Duwu', is popular in the nationality of Yi, Miao, Hani, etc. in Yunnan. The Hani nationality called "each ratio", the Yi nationality called "Bilu" or "Wule", and the Dong nationality called "Bai", which are commonly used for solo or dance and rap accompaniment. The bawu has many varieties, and in Hani, there are single tube and double tube, and because the length and thickness of the bamboo tube are different, there are also high pitch, middle pitch and low pitch bawu. The bawu is made of bamboo tube, has seven finger holes, a copper reed in the shape of a sharp tongue is disposed at the mouthpiece, the upper end is blown transversely during playing, and the reed is vibrated to produce sound. The usual range is more than octave. The bawu has small volume, but the tone color is very soft and pleasant, and is very similar to a pair of lovers who have a clock feeling who complain mutually and pleasantly and have low complaint on the intestines, so that the bawu is called as a musical instrument capable of speaking. The bawu is divided into three types of high pitch, middle pitch and low pitch bawu because of the difference of the length and thickness of the bamboo tube. During playing, the tube body is thick and long and blows transversely, and the tube body is thin and short and blows vertically. When the device is used for vertical blowing, the bawu is played by hanging both arms in the air, and the arms are easy to be tired when playing is long, so that playing stability is influenced. The bawu is soft and beautiful in tone but small in volume. In the traditional bawu, some sounds can generate corrupting sounds, silk sounds and other murmurmurs in playing, so that playing effect is influenced.

Disclosure of Invention

The utility model aims to solve the problem that the arms are easy to be tired when the vertical blowing is used for making a bawu, which affects the stability of performance; the bawu has the problems that some sounds are mixed in playing and the volume of the bawu is small, and a new technical scheme for improving the vertical blowing bawu is provided.

The technical scheme of the utility model: an improved vertical-blowing Bawu is characterized in that a blowing nozzle is arranged at one end of a sound tube, a reed is arranged at the upper end of the sound tube, a sound hole is formed in the sound tube, a 4 sound hole is formed between the 5 sound hole and the 3 sound hole, a key cover fixedly connected with a control lever is arranged on the 4 sound hole, a straight sound tube is fixedly connected with an inclined sound tube, a finger hole is formed in the straight sound tube, and the reed is arranged on the inclined sound tube; the sound hopper is hollow, the upper end of the hollow part is a vent hole with a circular cross section, the lower end of the hollow part is a connecting hole with a circular cross section, the upper end of the hollow part is fixedly connected with a blowing nozzle, the lower end of the sound hopper is sealed and detachably connected with an oblique sound pipe, the middle part of the hollow part is an air cavity, and the cross section of the air cavity is rectangular.

The included angle between the oblique sound tube and the straight sound tube is a =5-12 degrees.

The structure that connects the pipe to one side is dismantled in sound fill lower extreme sealing is: an annular sealing groove is arranged at the lower end of the oblique sound pipe, a cork sealing ring is arranged in the annular sealing groove, the outer circle of the cork sealing ring is in interference fit with a connecting hole at the lower end of the sound hopper, and the interference magnitude is 0.5-1 mm.

The distance between the end of the oblique sound tube and the top of the rectangular air cavity is h =5mm-10 mm.

The vent hole on the sound funnel is composed of two sections of holes with different axial lines, and the included angle B of the two sections of axial lines is =1-3 degrees.

The cross section of the shape of the sound hopper is rectangular.

The unsettled easy tired of arm when solving traditional vertical blowing bawu, the problem of the stability of playing is influenced, the utility model discloses the upper end system of the sound pipe of vertical blowing bawu is the slope, uses the utility model discloses a vertical blowing bawu can not unsettled or less unsettled when playing, and the arm is difficult to tired when playing like this, has guaranteed the stability of playing. The utility model discloses an inclination of pitch pipe is through a large amount of experimental settlement, and when inclination was too big, the resistance was too big when the air current passed through the pitch pipe, will influence volume and tone quality. In order to make the air current more smooth and easy through the sound pipe, the utility model discloses can also establish the air vent in the sound fill to constitute by the through-hole of two sections different coaxial lines.

Have some sound and can appear the noise and the less problem of bawu volume occasionally in playing and gathering for solving vertical blowing bawu, the utility model discloses the sound is fought has been set up. The sound fill cavity becomes airflow channel, and the blow gun is connected to the upper end, and the pipe to one side is connected to the lower extreme, and the centre is the air cavity, and through the experiment, the air cavity adopts rectangular cross section, can overcome traditional vertical blowing bawu and have the condition that some sound can appear the noise sometimes in playing and gathering, and increase the effect of national style and increase the volume in addition, also convenient clean bawu, change reed. For the convenience change sound pipe, the utility model discloses a sound fill lower extreme is sealed can dismantle the connection pipe to one side, specifically is equipped with the annular seal groove at the pipe lower extreme to one side, is equipped with the cork sealing washer in the annular seal groove, cork sealing washer excircle and the connecting hole interference fit of sound fill lower extreme. The cork has good sealing performance, is soft and has no toxicity. The utility model has reasonable design and ingenious structure, and the arms and wrists are comfortable and not easy to be tired when the vertical blowing is used for making the bawu, thereby improving the playing stability; the utility model discloses the sound fill that sets up has effectively reduced the bawu and has had some sound to appear the noise sometimes and the less problem of bawu volume playing. The detachable sound hopper can protect the reed, and is convenient for cleaning the bawu and replacing the reed. The utility model discloses convenient to use, the tone quality is pure, and sound is loud, and national color is showing, can extensively be applicable to the performance and use with the beginner, is a neotype improvement vertical blowing bawu.

Drawings

FIG. 1 is a front view of the utility model

FIG. 2 is the schematic view of the installation structure of the present invention

FIG. 3 is a front view of the present invention in partial section

FIG. 4 is a cross-sectional view of the sound box of the present invention

FIG. 5 is a cross-sectional enlarged view of A-A of the present invention

In the figure: 1 is a mouthpiece, 2 is a sound box, 201 is an air chamber, 202 is a connecting hole, 203 is a vent hole, 3 is a sound tube, 301 is a slant sound tube, 302 is a straight sound tube, 303 is a sound hole, 304 is an annular seal groove, 305 is a cork seal ring, 306 is a reed, 307 is a "4" sound hole, 308 is a key cover, 309 is a control lever.

Detailed Description

The utility model provides an improvement vertical blowing bawu, is equipped with blowing nozzle 1 at sound pipe one end, and the sound pipe upper end is equipped with reed 306, is equipped with sound hole 303 on the sound pipe, establishes between "5" sound hole and "3" sound hole at "4" sound hole 307, is equipped with on the "4" sound hole and controls lever 309 fixed connection's key lid 308, the structure of control lever be: the rotatable control lever is fixedly connected to the sound tube, one side of the lever is fixedly connected with the key cover, the other side of the lever is fixedly connected with the key, the return spring is arranged on the key, the key cover on the '4' sound hole is in a normally closed state, and the key cover is opened when the key is pressed down. The straight sound tube 302 is fixedly connected with the oblique sound tube 301, the included angle between the oblique sound tube 301 and the straight sound tube 302 is a =5-12 degrees, the straight sound tube is provided with a sound hole 303, and the oblique sound tube is provided with a reed 306; the sound hopper 2 is hollow, the upper end of the hollow part is provided with a circular vent hole 203 with a cross section, the lower end of the hollow part is provided with a connecting hole 202 with a cross section which is circular, the upper end of the hollow part is fixedly connected with the blowing nozzle 1, the lower end of the sound hopper is sealed and detachably connected with the oblique sound tube 301, the middle part of the hollow part is provided with an air cavity 201, the cross section of the air cavity is rectangular, and the appearance of the sound hopper is also. The vent 203 on the sound funnel 2 can be composed of two sections of holes with different axes, and the included angle B of the two sections of axes is =1-3 degrees. The distance between the end of the pitch pipe 301 and the top of the rectangular air cavity is h =5mm-10mm after assembly. The sound funnel can be made of wood, cutin or organic materials.

The structure that sound fill lower extreme sealed detachable connection pipe 303 to one side be: an annular sealing groove 304 is formed in the lower end of the pitch pipe, a cork sealing ring 305 is arranged in the annular sealing groove, the outer circle of the cork sealing ring is in interference fit with the connecting hole 204 in the lower end of the pitch cone, and the interference magnitude is 0.5-1 mm.

Claims (6)

1. An improved vertical blowing Bawu is characterized in that a blowing nozzle is arranged at one end of a sound tube, a reed is arranged on the sound tube, a sound hole is formed in the sound tube, a 4 sound hole is formed between a 5 sound hole and a 3 sound hole, and a key cover fixedly connected with a control lever is arranged on the 4 sound hole; the sound bucket (2) is hollow, the upper end of the hollow part is provided with a circular vent hole (203) with a cross section, the lower end of the hollow part is provided with a circular connecting hole (202) with a cross section, the upper end of the hollow part is fixedly connected with the blowing nozzle (1), the lower end of the sound bucket is sealed and detachably connected with the inclined sound tube (301), the middle part of the hollow part is provided with an air cavity (201), and the cross section of the air cavity is.

2. An improved vertical blowing bawu as claimed in claim 1, wherein said pitch horn (301) is angled from said pitch horn (302) by an angle of a =5-12 degrees.

3. An improved vertical blowing bawu as claimed in claim 1, wherein said structure of the sound funnel lower end sealing and detachable connection of the pitch tube (301) is: an annular sealing groove (304) is arranged at the lower end of the pitch pipe, a cork sealing ring (305) is arranged in the annular sealing groove, the outer circle of the cork sealing ring is in interference fit with a connecting hole (202) at the lower end of the pitch pipe, and the interference magnitude is 0.5-1 mm.

4. An improved vertical blowing bawu as claimed in claim 1, wherein said pitch horn (301) end is spaced from the top of the rectangular air cavity by a distance h =5mm-10 mm.

5. An improved vertical blowing bawu as claimed in claim 1, wherein said ventilation holes (203) of said funnel (2) are formed by two different axial holes, the angle between the two axial lines B =1-3 degrees.

6. An improved vertical blowing bawu as claimed in claim 1, wherein said acoustic funnel (2) has a rectangular cross-section.

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