Warp comb, harmonica and use method

Abstract

The invention discloses a fret, a harmonica and a using method, and relates to the technical field of harmonica, the fret comprises a fret body, the fret body is provided with a plurality of resonance cavity channels, each resonance cavity channel comprises an air groove and an air channel, the air grooves correspond to reeds of a reed plate and form a first resonance cavity, a baffle is arranged between the air grooves and the air channels, the baffle is provided with at least one slowing hole, and the slowing holes are communicated with the first resonance cavity. The harmonica is simple in structure and convenient to use, and the resonance space can be increased while the response speed of the harmonica is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of harmonicas, and particularly to a reed plate, a harmonica and a using method thereof. Background Art

[0002] The air groove is an important part of the front cavity resonance of a harmonica. When the reed vibrates, it drives the air in the front cavity to resonate, realizing the sound production of the harmonica. There are many drawbacks in the air groove structure adopted by existing harmonicas. On the one hand, the internal capacity of the air groove is small, and the basic resonance provided is insufficient, resulting in a small volume and weak fundamental frequency of the sound emitted by the harmonica, poor timbre plasticity, and it is difficult to meet the diverse musical needs of performers. On the other hand, if the air groove is designed too large, although theoretically it may increase the resonance space to increase the volume, it will make the time for the internal pressure of the air groove to reach the chamber pressure required for the reed to start vibrating longer, thereby causing the harmonica to respond sluggishly and affecting the fluency and immediacy of performance. Therefore, the air groove structure of existing harmonicas has defects that are difficult to balance and improve in terms of resonance effect, timbre shaping, and response speed. Summary of the Invention

[0003] The purpose of the present invention is to provide a reed plate, a harmonica and a using method thereof to solve the problems existing in the above-mentioned prior art, with a simple structure, convenient to use, effectively ensuring the response speed of the harmonica while being able to increase the resonance space.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The present invention provides a reed plate, including: a reed plate body, the reed plate body is provided with a plurality of resonance cavity channels, the resonance cavity channels include an air groove and an air duct, the air groove corresponds to the reed of the reed plate and forms a first resonance cavity, a baffle is arranged between the air groove and the air duct, and the baffle is provided with at least one slow-down hole, and each slow-down hole is used for making the air flow entering the air groove slow down and enter the air duct.

[0006] Preferably, the total cross-sectional area of the slow-down holes on one baffle is 4% - 20% of the cross-sectional area of the air groove.

[0007] Preferably, it further includes an adjusting member, one end of the adjusting member extends into the air duct from the end of the air duct far away from the air groove and is hermetically connected to the inner wall of the air duct, the air duct between the end of the adjusting member extending into the air duct and the baffle forms the second resonance cavity, and the adjusting member is slidably connected to the air duct in the length direction of the air duct and can be slidably limited to a preset position to adjust the size of the second resonance cavity.

[0008] Preferably, it further includes a locking member, and the locking member is used for locking the adjusting member at the position after the adjusting member slides.

[0009] Preferably, the locking member is a locking bolt, a threaded hole is provided on the side wall of the air duct at the end away from the baffle, and the locking bolt is threadedly connected to the threaded hole and can extend into the air duct to position the adjusting member in the air duct.

[0010] Preferably, the adjusting member includes an adjusting rod, the cross-section of the air duct is circular or polygonal, and the cross-section of the adjusting rod (21) is adapted to the cross-sectional shape of the air duct.

[0011] Preferably, the adjusting member further includes a limiting member, the limiting member is integrally connected to one end of the adjusting rod extending out of the air duct, and the cross-sectional area of the limiting member is larger than the cross-sectional area of the air duct to limit the adjusting member from completely extending into the air duct.

[0012] Preferably, the harmonica body has a first end and a second end, and a plurality of the resonance cavities (11) are arranged in parallel in a direction perpendicular to the direction from the first end to the second end, and the lengths of the air slots (111) of the resonance cavities (11) gradually increase from the first end to the second end.

[0013] The present invention also provides a harmonica, which is characterized in that it includes the harmonica grille as described in any one of the above.

[0014] The present invention also provides a method for using the harmonica grille as described above, including the following steps: After the air flow enters the first resonance cavity formed by the air slot and the reed plate from the outer end of the air slot, under the restriction of the baffle between the air slot (111) and the air duct (112), the air flow quickly fills the first resonance cavity and pushes the reed to vibrate and sound. As the reed continuously vibrates, the air flow gradually enters the second resonance cavity formed by the air duct through the slow-down hole slowly. When the air flow flowing into the second resonance cavity accumulates to a certain extent, the first resonance cavity and the second resonance cavity jointly provide a resonance space for the reed.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] The purpose of the present invention is to provide a harmonica grille, a harmonica and a using method. By providing an air duct and connecting the air duct and the air duct through a slow-down hole, when playing the harmonica, the air flow preferentially fills the air slot. Because the air flow slows down and enters the air duct, it makes it easier for the air slot to quickly reach the chamber pressure required for the reed to start vibrating, and then quickly pushes the reed to vibrate and sound, ensuring the response sensitivity of the harmonica. At the same time, the subsequent air duct can also participate in the resonance, improving the overall resonance effect. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for use in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the fret provided by the present invention;

[0020] Figure 2 Front view of the fret provided by the present invention;

[0021] Figure 3 is Figure 2 Cross-sectional view at A-A in

[0022] In the figure: 1, fret body; 11, resonance cavity; 111, air groove; 112, air duct; 113, slow-down hole; 2, adjusting member; 21, adjusting rod; 22, limiting member; 3, locking bolt; 4, reed plate. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a fret, a harmonica and a usage method to solve the problems existing in the above-mentioned prior art, with a simple structure, convenient use, effectively ensuring the response speed of the harmonica while being able to increase the resonance space.

[0025] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Embodiment 1

[0027] This embodiment provides a fret, such as Figures 1 to 3As shown in the figure, it includes: a harmonica fret body 1, the harmonica fret body 1 is provided with a plurality of resonance cavities 11, the resonance cavities 11 include a wind groove 111 and a wind duct 112, the wind groove 111 corresponds to the reeds of the reed plate 4 and forms a first resonance cavity, a baffle is arranged between the wind groove 111 and the wind duct 112, the baffle is provided with a slow-down hole 113, and the slow-down hole 113 is used to slow down the airflow entering the wind groove 111 from entering the wind duct 112. When playing the harmonica, the airflow preferentially fills the wind groove 111. Because the airflow slows down and enters the wind duct 112, it makes it easier for the wind groove 111 to quickly reach the cavity pressure required for the reeds to vibrate, and then quickly pushes the reeds to vibrate and sound, ensuring the response sensitivity of the harmonica. At the same time, the subsequent wind duct 112 can also participate in the resonance, improving the overall resonance effect.

[0028] In a preferred solution of this embodiment, the number of the slow-down holes 113 can be one or more, and the total cross-sectional area thereof is 4% - 20% of the cross-sectional area of the wind groove 111, and the slow-down holes 113 are round holes, and the diameter of a single slow-down hole 113 does not exceed 2.5 mm. Defining the ratio range of the cross-sectional area of the slow-down holes 113 to the cross-sectional area of the wind groove 111, as well as the shape and upper limit of the diameter of the slow-down holes 113, can more accurately control the speed and amount of the airflow entering the wind duct 112 from the wind groove 111. Reasonable airflow control helps to achieve the best resonance effect on the basis of ensuring the response sensitivity of the harmonica, and precisely adjusts the airflow state entering the wind duct 112 at different stages to achieve a more ideal volume and tone performance.

[0029] In a preferred solution of this embodiment, the harmonica fret further includes an adjusting member 2. One end of the adjusting member 2 extends into the wind duct 112 from the end of the wind duct 112 far away from the wind groove 111 and is hermetically connected to the inner wall of the wind duct 112. The wind duct 112 between the end of the adjusting member 2 extending into the wind duct 112 and the baffle forms a second resonance cavity. The adjusting member 2 is slidably connected to the wind duct 112 in the length direction of the wind duct 112 and can maintain the position after sliding to adjust the size of the second resonance cavity. The setting of the adjusting member 2 enables the size of the second resonance cavity to be adjustable. By changing the volume of the second resonance cavity, the overall volume of the entire resonance cavity system 11 can be changed. Different total volumes of the resonance cavities 11 will change the harmonic composition when the harmonica sounds, thus providing the performer with the function of adjusting the tone of the harmonica and enriching the musical expressiveness of the harmonica.

[0030] In a preferred solution of this embodiment, the harmonica fret further includes a locking member, and the locking member is used to lock the adjusting member 2 at the position after the adjusting member 2 slides. The locking member can fix the position of the adjusting member 2 to ensure that after the adjusting member 2 adjusts the size of the second resonance cavity, it will not change its position randomly due to external forces and other factors. This ensures that the adjusted tone state remains stable, so that the performer does not need to worry about the tone changing due to the sliding of the adjusting member 2 during the performance, improving the reliability and stability of the harmonica tone adjustment.

[0031] In a preferred solution of this embodiment, the locking member is a locking bolt 3. A threaded hole is provided on the side wall of the air duct 112 away from the baffle. The locking bolt 3 is threadedly connected to the threaded hole and can extend into the air duct 112 to press the adjusting member 2 against the air duct 112. The method of matching the locking bolt 3 with the threaded hole has a simple structure and is convenient to operate. This connection method can effectively press the adjusting member 2 against the air duct 112, firmly fix the position of the adjusting member 2, and ensure the stability of the tone after adjustment. At the same time, this mechanical connection method has high reliability, is not easy to loosen, and is relatively easy to maintain and replace.

[0032] In a preferred solution of this embodiment, the adjusting member 2 includes an adjusting rod 21. The cross-section of the air duct 112 is circular or polygonal. The adjusting rod 21 has a simple structure and is convenient to operate, facilitating the player to change the size of the second resonance cavity by pushing and pulling the adjusting rod 21. The air duct 112 is designed with a circular or polygonal cross-section. On the one hand, the circular cross-section enables the adjusting rod 21 to slide more smoothly, reducing friction; the polygonal cross-section can increase the stability and guiding property of the adjusting rod 21 during sliding, avoiding accidental situations such as rotation of the adjusting rod 21 during sliding, and accurately realizing the adjustment of the volume of the second resonance cavity.

[0033] In a preferred solution of this embodiment, the adjusting member 2 further includes a limiting member 22. The limiting member 22 is integrally connected to one end of the adjusting rod 21 extending out of the air duct 112. The cross-sectional area of the limiting member 22 is larger than the cross-sectional area of the air duct 112 to limit the adjusting member 2 from completely extending into the air duct 112. The setting of the limiting member 22 can prevent the adjusting rod 21 from completely extending into the interior of the air duct 112, avoiding the situation where the adjusting rod 21 is lost and difficult to take out from the air duct 112. At the same time, the limiting member 22 plays a certain role of prompting and positioning, enabling the user to clearly know the maximum adjustment range of the adjusting rod 21 and facilitating more accurate control of the adjustment process.

[0034] In a preferred solution of this embodiment, the harmonica body 1 has a first end and a second end. Each resonance cavity duct 11 is correspondingly arranged on both sides of the harmonica body 1, and the length of the air groove 111 of each resonance cavity duct 11 gradually increases from the first end to the second end. This design makes the air grooves 111 at different positions have different lengths, capable of generating different resonance effects. When the player blows different parts of the harmonica, due to the change in the length of the air groove 111, the harmonica will produce diverse timbres and resonance characteristics in different pitch ranges, enriching the musical performance range of the harmonica and enhancing the overall acoustic performance and playing interest of the harmonica.

[0035] Embodiment Two

[0036] This embodiment also provides a harmonica, which is characterized in that it includes the harmonica grille as in Embodiment One.

[0037] Embodiment Three

[0038] This embodiment also provides a method for using a fret like that in Embodiment 1, including the following steps:

[0039] 1. Airflow circulation and sound generation stage

[0040] When the user blows air into the harmonica, the airflow enters the resonance cavity 11 of the fret body 1. First, the airflow directly surges into the air groove 111 corresponding to the reed of the reed plate 4. At this time, the air groove 111 and the reed cooperate to form the first resonance cavity. Due to the unique design of the fret, the airflow quickly fills the air groove 111, pushing the reed to vibrate and generate sound. During this process, since the baffle between the air groove 111 and the air duct 112 is provided with a slow-down hole 113, and the slow-down hole 113 can slow down the airflow entering the air groove 111 from entering the air duct 112, so at the initial stage, the airflow will not immediately flow into the air duct 112 in large quantities. The relatively small air groove 111 is more likely to quickly reach the cavity pressure required for the reed to start vibrating, quickly pushing the reed to vibrate, ensuring that the harmonica responds quickly to the blowing action, that is, ensuring the response sensitivity of the harmonica.

[0041] 2. Resonance enhancement stage

[0042] As the reed continues to vibrate, the airflow gradually and slowly enters the air duct 112 through the slow-down hole 113. When the airflow entering the air duct 112 accumulates to a certain extent, the second resonance cavity formed between the air groove 111, the slow-down hole 113, and the end of the adjusting member 2 extending into the air duct 112 and the baffle communicates with each other. The three parts together form a larger resonance space, jointly providing a more sufficient resonance environment for the reed, enhancing the resonance effect of the sound emitted by the harmonica, significantly increasing the volume of the harmonica, and also enhancing the fundamental frequency.

[0043] 3. Tone adjustment stage

[0044] If the user hopes to adjust the tone of the harmonica, the adjusting member 2 can be operated. Since the adjusting member 2 is slidably connected to the air duct 112 in the length direction of the air duct 112, by sliding the adjusting member 2 back and forth, the user can change the size of the second resonance cavity formed between the end of the adjusting member 2 extending into the air duct 112 and the baffle.

[0045] When the adjusting member 2 slides, the volume of the second resonance cavity changes accordingly. Since the second resonance cavity is part of the resonance cavity 11 system, the total volume of the entire resonance cavity 11 system also changes. The change in the total volume of the resonance cavity 11 will affect the harmonic composition when the harmonica emits sound, and different harmonic ratios correspond to different tones. The user can, according to their own tone requirements, continuously adjust the position of the adjusting member 2 and slide the adjusting member 2 to a suitable position to achieve diversified adjustment of the harmonica tone.

[0046] 4. Adjustment position locking stage

[0047] After the adjusting member 2 slides to the desired position, in order to ensure the stability of the adjusted tone color, it is necessary to use a locking member to fix the adjusting member 2 at this position. The locking member here is a locking bolt 3, and a threaded hole is provided on the side wall of the air duct 112 away from the baffle. Thread the locking bolt 3 into the threaded hole and tighten it in the direction of the air duct 112. As the bolt is tightened, the bolt will gradually extend into the air duct 112 and finally press the adjusting member 2 against the inner wall of the air duct 112, thereby effectively fixing the position of the adjusting member 2 and ensuring the stability of the adjusted tone color state, so that the tone color will not change during the performance.

[0048] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A piano fret, characterized in that: include: A piano frame body (1), the piano frame body (1) is provided with a plurality of resonance cavities (11), the resonance cavities (11) include wind grooves (111) and wind ducts (112), the wind grooves (111) correspond to the reeds of the spring plate (4) and form a first resonance cavity, a baffle is provided between the wind grooves (111) and the wind ducts (112), the baffle is provided with at least one mitigation hole (113), and each mitigation hole (113) is used to slow down the airflow entering the wind grooves (111) and entering the wind ducts (112).

2. The piano frame according to claim 1, characterized in that: The sum of the cross-sectional areas of the mitigation holes (113) on one baffle plate is 4% to 20% of the cross-sectional area of ​​the wind slot (111).

3. The piano frame according to claim 1, characterized in that: The air duct (112) further comprises an adjusting member (2), one end of which extends from an end of the air duct (112) away from the air groove (111) into the air duct (112) and is sealedly connected to the inner wall of the air duct (112); the air duct (112) between the end of the adjusting member (2) extending into the air duct (112) and the baffle forms the second resonance cavity; the adjusting member (2) is slidably connected to the air duct (112) in the length direction of the air duct (112) and can be slidably limited in a preset position to adjust the size of the second resonance cavity.

4. The piano frame according to claim 3, characterized in that: It also comprises a locking member, which is used to lock the adjusting member (2) at the position after the adjusting member (2) slides.

5. The piano frame according to claim 4, characterized in that: The locking member is a locking bolt (3); a threaded hole is provided on a side wall of the air duct (112) away from one end of the baffle; the locking bolt (3) is threadedly connected to the threaded hole and can extend into the air duct (112) to position the adjustment member (2) in the air duct (112).

6. The piano frame according to claim 5, characterized in that: The adjusting member (2) comprises an adjusting rod (21), the cross section of the air duct (112) is circular or polygonal, and the cross section of the adjusting rod (21) is adapted to the cross section shape of the air duct.

7. The piano frame according to claim 6, characterized in that: The adjusting member (2) further comprises a limiting member (22), the limiting member (22) being integrally connected to one end of the adjusting rod (21) extending out of the air duct (112), the cross-sectional area of ​​the limiting member (22) being larger than the cross-sectional area of ​​the air duct (112) so as to limit the adjusting member (2) from fully extending into the air duct (112).

8. The piano frame according to claim 1, characterized in that: The piano frame body (1) has a first end and a second end, and a plurality of resonance cavities (11) are arranged in parallel perpendicularly from the first end to the second end, and the length of the wind groove (111) of each resonance cavity (11) gradually increases from the first end to the second end.

9. A harmonica, characterized in that: Including a piano fret as described in any one of claims 1 to 8.

10. A method for using the piano frame according to any one of claims 1 to 8, characterized in that: The following steps are involved: The airflow enters the first resonance chamber formed by the air groove (111) and the spring plate (4) from the outer end of the air groove. Under the restriction of the baffle between the air groove (111) and the air duct (112), the airflow quickly fills the first resonance chamber and drives the reed to vibrate and produce sound. As the reed continues to vibrate, the airflow gradually passes through the mitigation hole (113) and slowly enters the second resonance chamber formed by the air duct (112). When the airflow flowing into the second resonance chamber accumulates to a certain extent, the first resonance chamber and the second resonance chamber jointly provide a resonance space for the reed.

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