Simple clarinet for teaching

Abstract

The utility model provides a simple clarinet for teaching, which comprises a flute head, a middle joint pipe and a horn mouth pipe, the joint of the bottom pipe body of the flute head and the upper end of the middle joint pipe and the joint of the bottom end of the middle joint pipe and the upper end of the horn mouth pipe are connected through screwing type stepped sealing joints; the screwing type stepped sealing joint comprises a male joint and a female joint. The male joint is a stepped pipe body of which the pipe wall peripheral diameter is gradually reduced from top to bottom, and an internal connection metal ring, a rubber ring groove and a sealing rubber ring are arranged on the periphery of the stepped pipe body; the female connector is a stepped sleeve with the inner circumference diameter gradually reduced, and an external metal ring is arranged on the periphery of an upper end opening of the female connector. The utility model has the advantages that the tube body can be disassembled in a labor-saving manner, the operation is simple, the safety and reliability are realized, and the tube is suitable for young students.

Description

Technical Field

[0001] The utility model relates to the technical field of musical instruments, in particular to a simple clarinet for teaching. Background Art

[0002] A clarinet makes the air column in the tube vibrate and sound by using a single reed-made reed piece and a matching mouthpiece. The high pitch area of the clarinet is loud and clear, the middle pitch area is full of expression, the timbre is pure, the low pitch area is deep, thick and full. It is one of the widely used wind instruments. The clarinet does not require certain basic skills like stringed instruments and the piano, nor does it require a high lung capacity like most other wind instruments, making it suitable for most people to learn and play. A traditional clarinet consists of a mouthpiece, a connecting tube, an upper joint tube, a lower joint tube, a bell and mechanical keys. There are many sound holes on the tube body, and the mechanical keys are controlled by complex linkage components. The overall structure is complex and the manufacturing cost is high, which is not conducive to teaching use. Therefore, people have developed a simple clarinet suitable for teaching. The simple clarinet removes the mechanical keys and is divided into several sections of the tube body. The overall structure becomes simpler and the manufacturing cost is greatly reduced, making it suitable as a popular teaching instrument. In the existing simple clarinet in the prior art, the connection of the tube body still uses a cork gasket for sealing. Due to the tight connection of the cork gasket, a relatively large amount of force is required to pull out and insert the tube body. When used as a teaching instrument, the users are generally of a relatively young age. When students pull out and insert the clarinet tube body, they need to exert all their strength. If the strength is small, they cannot pull out and insert the tube body, or lose control after the tube body is pulled apart, easily causing damage to the clarinet or personal injury. Summary of the Invention

[0003] In order to solve the above problems, the utility model provides a simple clarinet for teaching. This clarinet has the advantages of labor-saving tube body disassembly, simple operation, safety and reliability, and is suitable for use by students at a relatively young age.

[0004] The utility model adopts the following technical solution: A simple clarinet for teaching, comprising a mouthpiece, a middle joint tube, and a bell tube. The connection between the bottom tube body of the mouthpiece and the upper end of the middle joint tube, and the connection between the bottom end of the middle joint tube and the upper end of the bell tube are both connected by a screw-on stepped seal joint; the screw-on stepped seal joint includes a male joint connected to the upper tube body and a female joint connected to the lower tube body; the male joint is a stepped tube body with the outer diameter of the tube wall gradually shrinking from top to bottom. An internal metal ring is provided on the outer periphery of the uppermost shrinkage table, and an external thread is provided on the outer periphery of the internal metal ring; a rubber ring groove is provided at the junction of each step below the internal metal ring, and a sealing rubber ring is provided in the rubber ring groove; the female joint is a stepped sleeve with the inner diameter gradually shrinking, and an external metal ring is provided on the outer periphery of the upper port of the female joint. An internal thread is provided on the inner wall of the external metal ring, and the external metal ring and the internal metal ring are connected by the internal and external threads; the inner wall of the stepped sleeve of the female joint starts to shrink inward to form a step at each position close to the upper part of the sealing rubber ring; the shape and size of the stepped sleeve of the female joint match those of the stepped tube body of the male joint. After the male joint is inserted into the female joint, they are connected by the internal and external threads of the external metal ring and the internal metal ring; the sealing rubber ring expands and presses against the inner wall of the stepped sleeve of the female joint to achieve sealing.

[0005] Further, the rubber ring groove is a C-shaped closed-end groove, the cross-section of the sealing rubber ring is circular, the sealing rubber ring is embedded in the rubber ring groove, and the closed-end edge of the rubber ring groove catches the sealing rubber ring to prevent it from falling off.

[0006] The utility model has the following beneficial effects:

[0007] The upper and lower joint tube bodies of the utility model are connected by a screw-on stepped seal joint. When it is necessary to disassemble the upper and lower joint tube bodies after playing, the upper and lower joint tube bodies can be gently rotated. Under the action of the internal and external threads of the internal metal ring and the external metal ring, the female joint and the male joint start to separate. When the internal metal ring and the external metal ring are completely separated, the sealing rubber ring just enters from the smaller inner diameter section of the stepped sleeve of the female joint into the next larger inner diameter section. At this time, the sealing rubber ring no longer forms an expansion and extrusion on the inner wall of the female joint sleeve, and the female joint and the male joint can be easily separated without the frictional force of the sealing rubber ring, which is convenient for putting into the package. The user only needs to gently rotate the upper and lower joint tube bodies to realize the disassembly of the clarinet tube body, without the need to use great force for pulling and inserting. The operation is simple and labor-saving, safe and reliable, and is suitable for use by younger students. Description of the Drawings

[0008] Figure 1 is a schematic structural diagram of the utility model;

[0009] Figure 2 is a schematic cross-sectional view of the screw-on stepped seal joint of the utility model.

[0010] The corresponding component names in the figure are: 1 mouthpiece; 2 middle joint tube; 3 bell tube; 4 male joint; 5 female joint; 6 internal connecting metal ring; 7 rubber ring groove; 8 sealing rubber ring; 9 external connecting metal ring. Detailed implementation mode

[0011] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Embodiment

[0012] Please refer to Figure 1-2 As shown, the present utility model provides a simple clarinet for teaching, which includes a mouthpiece 1, a middle joint tube 2, and a bell tube 3. The connection between the bottom tube body of the mouthpiece and the upper end of the middle joint tube and the connection between the bottom end of the middle joint tube and the upper end of the bell tube are both connected by a screw-on stepped seal joint; the screw-on stepped seal joint includes a male joint 4 connected to the upper tube body and a female joint 5 connected to the lower tube body; the male joint is a stepped tube body with the outer diameter of the tube wall gradually shrinking from top to bottom. An internal connecting metal ring 6 is provided on the outer circumference of the uppermost shrinkage platform, and an external thread is provided on the outer circumference of the internal connecting metal ring; a rubber ring groove 7 is provided at the junction of each step below the internal connecting metal ring, and a sealing rubber ring 8 is provided in the rubber ring groove; the female joint is a stepped sleeve with the inner diameter gradually shrinking. An external connecting metal ring 9 is provided on the outer circumference of the upper port of the female joint, and an internal thread is provided on the inner wall of the external connecting metal ring. The external connecting metal ring and the internal connecting metal ring are connected by internal and external threads; the inner wall of the stepped sleeve of the female joint starts to shrink inward to form a step at each position close to the upper part of the sealing rubber ring; the shape and size of the stepped sleeve of the female joint match those of the stepped tube body of the male joint. After the male joint is inserted into the female joint, they are connected by the internal and external threads of the external connecting metal ring and the internal connecting metal ring; the sealing rubber ring expands and presses against the inner wall of the stepped sleeve of the female joint to achieve sealing. The rubber ring groove is a C-shaped closed-end groove, the cross-section of the sealing rubber ring is circular, the sealing rubber ring is embedded in the rubber ring groove, and the closed-end edge of the rubber ring groove catches the sealing rubber ring to prevent it from falling off.

[0013] When connecting the upper and lower pipe bodies of the present utility model, first insert the bottom end of the male joint into the female joint. Clutch the upper and lower pipe bodies with both hands and rotate them with appropriate force. Under the action of the internal and external thread threads of the internal connecting metal ring and the external connecting metal ring, the female joint and the male joint are gradually tightened. After the external connecting metal ring is completely tightened, the sealing rubber ring just enters from the larger-diameter section of the inner circumference of the stepped sleeve of the female joint into the next smaller-diameter section of the inner circumference. At this time, the sealing rubber ring expands and tightly presses the inner wall of the sleeve of the female joint, forming a tight extrusion seal. At the same time, the upper and lower pipe bodies are connected as a whole. When it is necessary to disassemble the upper and lower pipe bodies after the performance, the upper and lower pipe bodies can be gently rotated in the reverse direction. Under the action of the internal and external thread threads of the internal connecting metal ring and the external connecting metal ring, the female joint and the male joint begin to separate. When the internal connecting metal ring and the external connecting metal ring are completely separated, the sealing rubber ring just enters from the smaller-diameter section of the inner circumference of the stepped sleeve of the female joint into the next larger-diameter section of the inner circumference. At this time, the sealing rubber ring no longer forms a tight extrusion seal on the inner wall of the sleeve of the female joint. After there is no frictional force of the sealing rubber ring between the female joint and the male joint, they can be easily separated, which is convenient for putting into the package. The user only needs to rotate the clarinet body to realize the separation of the upper and lower pipe bodies of the clarinet, without the need to use great force to insert and pull out. The operation is simple and labor-saving, safe and reliable, and is suitable for use by younger students.

[0014] The above are only the best embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, makes many possible changes and modifications to the technical solution of the present utility model by using the disclosed method content, and all belong to the scope protected by the claims.

Claims

1. A simple clarinet for teaching, characterized in that: It includes a mouthpiece, a middle section tube, and a bell tube. The connection between the bottom tube body of the mouthpiece and the upper end of the middle section tube, and the connection between the bottom end of the middle section tube and the upper end of the bell tube are both connected by screw-type stepped sealing joints. The screw-type stepped sealing joint includes a male joint connected to the upper tube body and a female joint connected to the lower tube body. The male joint is a stepped tube body with the outer diameter of the tube wall gradually shrinking from top to bottom. An internal metal ring is provided on the outer periphery of the uppermost contraction platform, and an external thread is provided on the outer periphery of the internal metal ring. A rubber ring groove is provided at the junction of each step below the internal metal ring, and a sealing rubber ring is provided in the rubber ring groove. The female joint is a stepped sleeve with the inner diameter gradually shrinking. An external metal ring is provided on the outer periphery of the upper port of the female joint, and an internal thread is provided on the inner wall of the external metal ring. The external metal ring and the internal metal ring are connected by internal and external threads. The inner wall of the stepped sleeve of the female joint starts to shrink inward to form a step at each position close to the upper part of the sealing rubber ring. The stepped sleeve of the female joint matches the shape and size of the stepped tube body of the male joint. After the male joint is inserted into the female joint, they are connected by the internal and external threads of the external metal ring and the internal metal ring. The sealing rubber ring expands and presses against the inner wall of the stepped sleeve of the female joint to achieve sealing.

2. The simple clarinet for teaching according to claim 1, wherein: The rubber ring groove is a C-shaped closed groove. The cross-section of the sealing rubber ring is circular. The sealing rubber ring is embedded in the rubber ring groove, and the closed edge of the rubber ring groove catches the sealing rubber ring to prevent it from falling off.

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