Airtight connection structure for musical instrument components

Abstract

The utility model belongs to the technical field of musical instrument processing, and particularly relates to an airtight connecting structure for musical instrument components, which comprises a female connecting pipe fitting and a male connecting pipe fitting inserted at one end of the female connecting pipe fitting, and the insertion outer section of the male connecting pipe fitting abuts against the end face of an insertion opening of the female connecting pipe fitting. And a plurality of sealing parts with different diameters are arranged on the insertion inner section of the male connecting pipe fitting and are in sealing fit with a stepped structure arranged on the inner wall of the female connecting pipe fitting. Through sealing multi-section matching, mechanical limiting and elastic clamping, the air tightness, the anti-loosening performance and the repeated assembly convenience of connecting parts are effectively improved, efficient airtight connection, reliable thrust and anti-loosening protection between musical instrument pipe fittings are ensured, and the connecting device is suitable for wind instrument air ports, flute heads, connecting pipes and other musical instrument parts needing to be frequently disassembled, assembled and debugged.

Description

Technical Field

[0001] This utility model belongs to the field of musical instrument processing technology, specifically relating to an airtight connection structure for musical instrument components. Background Technology

[0002] Brass instruments are primarily made of metals such as brass and cupronickel. High-quality metal materials, such as brass sheets, are selected, cut and pre-treated, and then shaped into the desired tube shape through processes like hydroforming and bending. These are then welded together, and the welded areas and the overall surface are ground and polished to ensure a smooth, flawless finish. Components such as pistons, valves, and slides are installed and precisely tuned to ensure smooth operation. Electroplating and painting processes enhance the instrument's appearance and corrosion resistance. Finally, professional players test the instruments to check pitch, tone, and sealing, ensuring product quality.

[0003] Patent CN202905131U discloses a wind instrument for performance. Its purpose is to provide a wooden flute that is comfortable to hold, lightweight, has good vibration, and produces a satisfactory sound. This utility model of a wooden flute includes, from top to bottom, a headstock, a body, a tailstock, and a movable cover fixed to the body and tailstock. The body and tailstock each have several flute holes. The hole on the body closest to the end connected to the tailstock is the first flute hole, and the hole on the tailstock closest to the end connected to the body is the second flute hole. The outer diameter of the flute tube is 25.4~25.6 mm, and the axial distance between the centers of the first and second flute holes is 32.1~32.5 mm.

[0004] In the above scheme, the joints between the various parts of the wind instrument lack an effective airtight structure. After repeated insertion and removal, the material of the connecting parts may deform, which will lead to a decrease in the airtightness between the tubes and thus affect the sound quality of the playing. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing an airtight connection structure for musical instrument components that can solve the technical issues described above.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The instrument component airtight connection structure includes a female connecting pipe and a male connecting pipe inserted into one end of the female connecting pipe. The outer insertion section of the male connecting pipe abuts against the insertion end face of the female connecting pipe. The inner insertion section of the male connecting pipe is provided with several sealing parts of different diameters, which are sealed in conjunction with the stepped structure provided on the inner wall of the female connecting pipe.

[0008] In the airtight connection structure of the musical instrument components, the sealing parts are arranged in order of increasing diameter as they are closer to the outer section of the insertion.

[0009] In the aforementioned airtight connection structure for musical instrument components, the inner wall of the female connecting tube includes a large inner diameter section and a small inner diameter section. The large inner diameter section extends from the insertion interface of the female connecting tube into the tube and connects with the small inner diameter section through the stepped structure.

[0010] In the aforementioned airtight connection structure for musical instrument components, the insert inner section includes an extension and a fastening section. The extension fits into the small inner diameter section, and the fastening section abuts against the large inner diameter section circumferentially.

[0011] In the airtight connection structure of the musical instrument component, the diameter difference between the extension and the fastening part forms an axial annular limiting surface, which axially abuts against the stepped surface of the stepped structure.

[0012] In the airtight connection structure of the musical instrument component, the fastening part is also provided with an elastic tensioning part that protrudes toward the large inner diameter section in a circumferential direction, and the elastic tensioning part is interference-fitted with the large inner diameter section.

[0013] In the airtight connection structure of the musical instrument components, a fastening clamp is provided circumferentially at one end of the female connecting pipe near the insertion interface, and the fastening clamp radially corresponds to the insertion inner section of the male connecting pipe.

[0014] In the airtight connection structure of the musical instrument component, the fastening clamp includes an internal threaded cylinder and a fastening bolt. The internal threaded cylinder is disposed on both sides of the axially opened gap groove at the insertion interface of the female connecting pipe, and the fastening bolt connects the two internal threaded cylinders.

[0015] In the aforementioned airtight connection structure for musical instrument components, an annular positioning block is provided circumferentially on the outer section of the plug-in, and the positioning block abuts against the end face of the plug-in interface of the female connecting pipe.

[0016] In the aforementioned airtight connection structure for musical instrument components, an annular positioning partition is provided on the end face of the female connecting pipe connector, and at least a portion of the positioning block is embedded in the seat groove formed by the positioning partition and the end face of the female connecting pipe connector.

[0017] The advantages of this utility model are:

[0018] Through multi-segment sealing, mechanical limiting, and elastic clamping, the airtightness, anti-loosening performance, and ease of repeated assembly of the connecting parts are effectively improved. This ensures efficient airtight connection, reliable thrust protection, and anti-loosening protection between instrument components, making it suitable for wind instrument vents, mouthpieces, connecting pipes, and other instrument parts that require frequent disassembly and adjustment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the plug-in connection of this utility model.

[0021] Figure 3 This is a schematic diagram of the female connecting pipe fitting of this utility model.

[0022] Figure 4 This is a schematic diagram of the male connector pipe fitting of this utility model.

[0023] In the diagram, the components are: female connecting pipe fitting 1, stepped structure 11, large inner diameter section 12, small inner diameter section 13, fastening clamp 14, internal threaded cylinder 15, fastening bolt 16, gap through groove 17, positioning partition 18, male connecting pipe fitting 2, positioning block 21, sealing part 3, extension part 31, fastening part 32, annular limiting surface 33, and elastic tensioning part 34. Detailed Implementation

[0024] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.

[0025] like Figures 1-4 As shown, the airtight connection structure of the musical instrument component includes a female connecting pipe 1 and a male connecting pipe 2 inserted into one end of the female connecting pipe 1. The outer insertion section of the male connecting pipe 2 abuts against the insertion end face of the female connecting pipe 1. The inner insertion section of the male connecting pipe 2 is provided with several sealing parts 3 of different diameters, which are sealed and fitted with the stepped structure 11 provided on the inner wall of the female connecting pipe 1.

[0026] That is, the female connecting pipe is a hollow cylinder with multiple stepped holes machined into its inner wall, presenting a stepped transition. During insertion, the sealing part of the male part fits into the stepped holes of the female part step by step, achieving a layer-by-layer seal to improve airtightness, which is especially suitable for preventing air leakage and sound leakage in the air passage structure of musical instruments.

[0027] In this embodiment, the sealing portions 3 are arranged in order of increasing diameter as they are closer to the outer segment of the insertion.

[0028] The outer diameter of the sealing part gradually decreases from the proximal end to the distal end, adapting to the stepped diameter of the inner hole of the female connection pipe fitting, thereby achieving a layered interference seal. When installed in this structural sequence, each sealing point will contact and interfere sequentially when the pipe fitting is inserted, forming a zoned seal, which improves the reliability and pressure resistance of the connection.

[0029] In this embodiment, the inner wall of the female connecting pipe 1 includes a large inner diameter section 12 and a small inner diameter section 13. The large inner diameter section 12 extends from the insertion interface of the female connecting pipe 1 into the pipe and is connected to the small inner diameter section 13 through the stepped structure 11.

[0030] The inner wall features a stepped hole design, with the larger opening close to the insertion port for easy guidance and insertion, and the smaller opening further inside to limit the insertion depth of the male part and fit snugly against the extension, improving airtightness and coaxial stability.

[0031] In this embodiment, the sealing part 3 includes an extension part 31 and a fastening part 32. The extension part 31 fits into the small inner diameter section 13, and the fastening part 32 abuts against the large inner diameter section 12 circumferentially.

[0032] The extension section has a slightly smaller diameter, which is inserted deep into the female part for a close fit and positioning. The fastening section is a thicker section, providing circumferential support. The structure is compact and reliably sealed, effectively participating in sealing and preventing detachment.

[0033] In this embodiment, the diameter difference between the extension portion 31 and the fastening portion 32 forms an axial annular limiting surface 33, which axially abuts against the stepped surface of the stepped structure 11.

[0034] After being inserted into the designated position, the limiting surface abuts against the stepped surface of the female part, preventing further insertion and achieving limiting and thrust stop. This structure simplifies the installation operation, avoids over-insertion or sealing failure due to inconsistent insertion depth, and helps with consistent assembly.

[0035] In this embodiment, the fastening part 32 is further provided with an elastic tensioning part 34 protruding toward the large inner diameter section 12 in a circumferential direction, and the elastic tensioning part 34 is interference-fitted with the large inner diameter section 12.

[0036] Elastic tensioning components, such as flanges or spring structures, utilize the material's elasticity to generate radial elastic deformation during insertion, thereby creating a circumferential compression effect.

[0037] In this embodiment, a fastening clamp 14 is provided circumferentially at one end of the female connecting pipe fitting 1 near the insertion interface, and the fastening clamp 14 corresponds radially to the insertion inner section of the male connecting pipe fitting 2.

[0038] The fastening clamp is wrapped around the outer ring of the female part, and radial clamping is achieved by tightening the bolts, which further compresses and seals the male part. It is suitable for connecting musical instrument parts that require adjustable clamping force and frequent disassembly and assembly.

[0039] In this embodiment, the fastening clamp 14 includes an internal threaded cylinder 15 and a fastening bolt 16. The internal threaded cylinder 15 is disposed on both sides of the axially opened gap groove 17 at the insertion interface of the female connecting pipe fitting 1, and the fastening bolt 16 connects the two internal threaded cylinders 15.

[0040] The female pipe insertion interface is slotted to use the pipe body as a clamp, forming two opposing lugs, each equipped with an internally threaded cylinder. The clamping degree is controlled by tightening the bolts, which is both reliable and easy to adjust manually.

[0041] In this embodiment, an annular positioning block 21 is provided circumferentially on the outer segment of the plug, and the positioning block 21 abuts against the plug end face of the female connecting pipe 1.

[0042] The positioning block is located on the outer ring of the plug end, and is usually in the form of a flange or a limiting boss. When inserted into place, the positioning block abuts against the end face of the female part to prevent further insertion, which facilitates quick positioning and disassembly. It is especially suitable for situations in musical instruments where parts need to be frequently changed.

[0043] In this embodiment, an annular positioning partition 18 is provided on the end face of the female connecting pipe 1 insertion interface, and at least a portion of the positioning block 21 is embedded in the seat groove formed by the positioning partition 18 and the end face of the female connecting pipe 1 insertion interface.

[0044] A limiting groove is machined on the end face of the female pipe to cooperate with the positioning block of the male pipe. The embedded locking structure realizes radial and axial dual limiting, which increases the stability of the connection and prevents loosening caused by vibration or pulling. It is suitable for connection scenarios with large pipe diameter or large gravity.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An airtight connection structure for musical instrument components, comprising a female connecting pipe (1) and a male connecting pipe (2) inserted into one end of the female connecting pipe (1), characterized in that, The outer section of the male connector (2) abuts against the insertion end face of the female connector (1). The inner section of the male connector (2) is provided with several sealing parts (3) of different diameters, which are sealed and fitted with the stepped structure (11) provided on the inner wall of the female connector (1).

2. The airtight connection structure for musical instrument components according to claim 1, characterized in that, Each of the sealing portions (3) is arranged in order of increasing diameter as it gets closer to the outer segment of the insertion.

3. The airtight connection structure for musical instrument components according to claim 1, characterized in that, The inner wall of the female connecting pipe fitting (1) includes a large inner diameter section (12) and a small inner diameter section (13). The large inner diameter section (12) extends into the pipe from the insertion interface of the female connecting pipe fitting (1) and is connected to the small inner diameter section (13) through the stepped structure (11).

4. The airtight connection structure for musical instrument components according to claim 3, characterized in that, The sealing part (3) includes an extension part (31) and a fastening part (32). The extension part (31) fits into the small inner diameter section (13), and the fastening part (32) abuts against the large inner diameter section (12) circumferentially.

5. The airtight connection structure for musical instrument components according to claim 4, characterized in that, The diameter difference between the extension (31) and the fastening part (32) forms an axial annular limiting surface (33), which axially abuts against the stepped surface of the stepped structure (11).

6. The airtight connection structure for musical instrument components according to claim 4, characterized in that, The fastening part (32) is also provided with an elastic tensioning part (34) protruding towards the large inner diameter section (12) in a circumferential direction, and the elastic tensioning part (34) is interference-fitted with the large inner diameter section (12).

7. The airtight connection structure for musical instrument components according to claim 1, characterized in that, The female connecting pipe fitting (1) is provided with a fastening clamp (14) circumferentially near the insertion interface, and the fastening clamp (14) radially corresponds to the insertion inner section of the male connecting pipe fitting (2).

8. The airtight connection structure for musical instrument components according to claim 7, characterized in that, The fastening clamp (14) includes an internal threaded cylinder (15) and a fastening bolt (16). The internal threaded cylinder (15) is disposed on both sides of the axially opened gap groove (17) at the insertion interface of the female connecting pipe fitting (1). The fastening bolt (16) connects the two internal threaded cylinders (15).

9. The airtight connection structure for musical instrument components according to claim 1, characterized in that, The outer segment of the plug is provided with an annular positioning block (21) in the circumferential direction, and the positioning block (21) abuts against the plug end face of the female connecting pipe fitting (1).

10. The airtight connection structure for musical instrument components according to claim 9, characterized in that, The female connector (1) has an annular positioning partition (18) on its insertion end face, and at least part of the positioning block (21) is embedded in the seat groove formed by the positioning partition (18) and the insertion end face of the female connector (1).

Images