Comb and harmonica

Abstract

The utility model discloses a fret and harmonica, and relates to the harmonica technical field, 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 plate is arranged between the air grooves and the air channels, the baffle plate is provided with at least one slowing hole, and the first resonance cavity is communicated with the air channel. 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 utility model relates to harmonica technical field, especially a kind of harp and harmonica. BACKGROUND

[0002] Air slot is an important part of harmonica front cavity resonance, when reed vibration drives front cavity air resonance, realize harmonica sound production.The air slot structure used in existing harmonica has many drawbacks.On the one hand, the internal capacity of air slot is small, and the basic resonance provided is insufficient, resulting in small volume and weak fundamental frequency of the sound emitted by harmonica, and poor tone plasticity, which is difficult to meet the diversified music needs of performers.On the other hand, if the air slot is designed too large, although it may theoretically increase the resonance space to improve the volume, but it will make the time of air slot internal cavity to reach the cavity pressure required for reed vibration longer, and thus cause the harmonica to respond dull, affecting the fluency and immediacy of performance.Therefore, the air slot structure of existing harmonica has defects that are difficult to balance and improve in terms of resonance effect, tone shaping and response speed. SUMMARY

[0003] The utility model aims at providing a kind of harp and harmonica to solve the problems existing in the prior art, simple structure, convenient to use, effectively ensure the response speed of harmonica while increasing resonance space.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides a kind of harp, comprising: harp body, the harp body is provided with multiple resonance cavities, the resonance cavity includes air slot and air channel, the air slot corresponds with the reed of reed plate and forms first resonance cavity, the air slot and the air channel are provided with baffle, the baffle is provided with at least one slow hole, the slow hole is used to make the airflow entering the air slot slow into the air channel.

[0006] Preferably, the sum of the cross-sectional areas of each slow hole on one baffle is 4% to 20% of the cross-sectional area of the air slot.

[0007] Preferably, further comprising an adjusting member, one end of the adjusting member extends into the air channel from the end of the air channel away from the air slot and is sealingly connected with the inner wall of the air channel, the air channel formed between the end of the adjusting member extending into the air channel and the baffle forms a second resonance cavity, the adjusting member and the air channel are slidingly connected in the length direction of the air channel and can be slidingly defined at a preset position to adjust the size of the second resonance cavity.

[0008] Preferably, further comprising a locking member, the locking member is used to lock the adjusting member at the position after sliding of the adjusting member.

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

[0010] Preferably, the adjusting member comprises an adjusting rod, and the cross section of the adjusting rod (21) is adapted to the shape of the cross section of the air duct.

[0011] Preferably, the adjusting member further comprises 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 greater than the cross sectional area of the air duct to limit the adjusting member from extending into the air duct.

[0012] Preferably, the body of the musical grid has a first end and a second end, and a plurality of the resonance cavity channels (11) are arranged in parallel in the direction from the first end to the second end, and the length of the air groove (111) of each resonance cavity channel (11) gradually increases from the first end to the second end.

[0013] The utility model also provides a harmonica, its characterized in that: including the musical grid as any one of the above.

[0014] The utility model has the following technical effects relative to the prior art:

[0015] The utility model discloses a musical grid and a harmonica, which are characterized in that: the air duct is arranged, and the air duct and the air duct are communicated through the slowing hole, when playing the harmonica, the airflow fills the air groove first, and then enters the air duct, so that the air groove can more easily and quickly reach the required cavity pressure for the vibration of the reed, thereby quickly pushing the reed to vibrate and sound, and the response sensitivity of the harmonica is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced as follows: obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0017] Figure 1 The utility model provides the structure schematic diagram of musical grid;

[0018] Figure 2 The utility model provides the front view of musical grid;

[0019] Figure 3 The utility model provides the structure schematic diagram of musical grid; Figure 2 The sectional view of A-A in the middle

[0020] In the diagram: 1. Frame body; 11. Resonance cavity; 111. Air groove; 112. Air duct; 113. Reduction hole; 2. Adjusting component; 21. Adjusting rod; 22. Limiting component; 3. Locking bolt; 4. Spring plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The purpose of this invention is to provide a harmonica with a harp rack to solve the problems existing in the prior art. It has a simple structure, is easy to use, and effectively ensures the response speed of the harmonica while increasing the resonance space.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] This embodiment provides a piano frame, such as Figures 1 to 3 As shown, the harmonica includes: a frame body 1, which has multiple resonance cavities 11. Each resonance cavity 11 includes a wind channel 111 and a wind duct 112. The wind channel 111 corresponds to the reed of the reed plate 4 and forms a first resonance cavity. A baffle is provided between the wind channel 111 and the wind duct 112. The baffle has a deceleration hole 113, which is used to slow down the airflow entering the wind channel 111 and then into the wind duct 112. When playing the harmonica, the airflow first fills the wind channel 111. Because the airflow slows down and enters the wind duct 112, the wind channel 111 can more easily and quickly reach the cavity pressure required for the reed to vibrate, thereby quickly driving the reed to vibrate and produce sound, ensuring the harmonica's response sensitivity. At the same time, the subsequent wind duct 112 can also participate in the resonance, improving the overall resonance effect.

[0026] In one preferred embodiment of the present application, the damping holes 113 can be one or more, and the total cross-sectional area of the damping holes 113 is 4% to 20% of the cross-sectional area of the air slot 111. The damping holes 113 are circular holes, and the diameter of each damping hole 113 is not more than 2.5 mm. Defining the range of the ratio of the cross-sectional area of the damping holes 113 to the cross-sectional area of the air slot 111, and the shape and upper limit of the diameter of the damping holes 113, can more accurately control the speed and amount of airflow from the air slot 111 into the air duct 112. Reasonable airflow control helps to achieve the best resonance effect on the basis of ensuring the responsiveness of the harmonica, and accurately adjusts the airflow state at different stages into the air duct 112 to achieve more ideal volume and timbre performance.

[0027] In one preferred embodiment of the present application, the key also includes an adjusting member 2, one end of the adjusting member 2 extends into the air duct 112 from the end of the air duct 112 away from the air slot 111 and is sealingly connected with the inner wall of the air duct 112. The end of the adjusting member 2 extending into the air duct 112 forms a second resonance cavity with the air duct 112 between the adjusting member 2 and the baffle. The adjusting member 2 is slidingly connected with the air duct 112 in the length direction of the air duct 112 and can maintain the position after sliding to adjust the size of the second resonance cavity. The adjusting member 2 is arranged so that the size of the second resonance cavity is adjustable. By changing the volume of the second resonance cavity, the overall volume of the entire resonance cavity system 11 can be changed. Different overall volumes of the resonance cavity system 11 will change the harmonic composition when the harmonica sounds, thereby providing the player with the function of adjusting the timbre of the harmonica and enriching the musical expressiveness of the harmonica.

[0028] In one preferred embodiment of the present application, the key also includes a locking member for locking 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 the adjusting member 2 does not change position at will after adjusting the size of the second resonance cavity due to external forces or other factors. This ensures that the adjusted timbre state is stable and does not change, so that the player does not need to worry about the timbre changing due to the sliding of the adjusting member 2 during the performance, thereby improving the reliability and stability of the timbre adjustment of the harmonica.

[0029] In one preferred embodiment of the present application, the locking member is a locking bolt 3, and the side wall of the air duct 112 away from the baffle is provided with a threaded hole. The locking bolt 3 is threadedly connected with the threaded hole and can extend into the air duct 112 to clamp the adjusting member 2 against the air duct 112. This connection method is simple in structure and easy to operate. This connection method can effectively clamp the adjusting member 2 against the air duct 112, firmly fix the position of the adjusting member 2, and ensure the stability of the adjusted timbre. At the same time, this mechanical connection method has high reliability and is not easy to loosen, and is relatively easy to maintain and replace.

[0030] In a preferred scheme of the embodiment, the adjusting member 2 comprises an adjusting rod 21, the cross section of the air duct 112 is circular or polygonal, the adjusting rod 21 is simple in structure and convenient to operate, and the performer can conveniently change the size of the second resonance cavity by pushing and pulling the adjusting rod 21. The air duct 112 is designed in a circular or polygonal cross section, which can make the adjusting rod 21 slide more smoothly and reduce the friction, and the polygonal cross section can increase the stability and directivity of the adjusting rod 21 when sliding, so as to avoid the rotation and other unexpected situations of the adjusting rod 21 when sliding, and accurately realize the adjustment of the volume of the second resonance cavity.

[0031] In a preferred scheme of the embodiment, the adjusting member 2 further comprises a limiting member 22, which is integrally connected to one end of the adjusting rod 21 extending out of the air duct 112, and the cross-sectional area of the limiting member 22 is larger than that of the air duct 112 to limit the adjusting member 2 from fully extending into the air duct 112. The limiting member 22 can prevent the adjusting rod 21 from completely extending into the air duct 112, and avoid the loss of the adjusting rod 21 and the difficulty in taking it out of the air duct 112. At the same time, the limiting member 22 plays a certain prompting and positioning role, so that the user can clearly know the maximum adjustment range of the adjusting rod 21, and can more accurately control the adjustment process.

[0032] In a preferred scheme of the embodiment, the music grid body 1 has a first end and a second end, each resonance cavity duct 11 is arranged on the two sides of the music grid 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, which can produce different resonance effects. When the performer blows the harmonica at different positions, the length of the air groove 111 changes, which can make the harmonica produce diversified tone and resonance characteristics in different sound regions, enrich the music performance range of the harmonica, and improve the overall acoustic performance and playing interest of the harmonica.

[0033] Embodiment Two

[0034] The embodiment also provides a harmonica, characterized in that it comprises the music grid according to embodiment one.

[0035] Embodiment Three

[0036] The embodiment also provides a method for using the music grid according to embodiment one, which comprises the following steps:

[0037] 1. Airflow circulation and sound production stage

[0038] When the user blows into the harmonica, the airflow enters the resonant cavity 11 of the comb body 1. First, the airflow directly flows into the air groove 111 corresponding to the reed 4, at this time the air groove 111 and the reed cooperate to form a first resonant cavity. Due to the unique design of the comb, the airflow quickly fills the air groove 111, pushing the reed to vibrate and produce sound. In this process, because the baffle between the air groove 111 and the air duct 112 is provided with a slowing hole 113, and the slowing hole 113 can slow down the airflow entering the air duct 112 from the air groove 111, 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 required cavity pressure for reed vibration, 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.

[0039] 2. Resonance enhancement stage

[0040] As the reed continues to vibrate, the airflow gradually and slowly enters the air duct 112 through the slowing hole 113. When the airflow entering the air duct 112 accumulates to a certain extent, the air groove 111, the slowing hole 113, and the second resonant cavity formed between the one end of the adjusting piece 2 extending into the air duct 112 and the baffle are interconnected. The three parts together form a larger resonant space, which cooperates to provide a more sufficient resonant environment for the reed, enhances the resonance effect of the sound emitted by the harmonica, significantly increases the volume of the harmonica, and also improves the fundamental frequency.

[0041] 3. Tone adjustment stage

[0042] If the user wants to adjust the tone of the harmonica, the adjusting piece 2 can be operated. Since the adjusting piece 2 is slidingly connected with the air duct 112 in the length direction of the air duct 112, the user can change the size of the second resonant cavity between the one end of the adjusting piece 2 extending into the air duct 112 and the baffle by sliding the adjusting piece 2 forward and backward.

[0043] When the adjusting piece 2 slides, the volume of the second resonant cavity changes, and since the second resonant cavity is part of the resonant cavity channel 11 system, the total volume of the entire resonant cavity channel 11 system also changes. The change in the total volume of the resonant cavity channel 11 will affect the harmonic composition when the harmonica produces sound, and different harmonic ratios correspond to different tones. The user can adjust the position of the adjusting piece 2 according to his own needs for tone, slide the adjusting piece 2 to the appropriate position, and achieve diversified adjustment of the tone of the harmonica.

[0044] 4. Adjusting position locking stage

[0045] When the adjusting member 2 is slid to the desired position, in order to ensure the stability of the adjusted tone color, a locking member is needed to fix the adjusting member 2 at the position. The locking member here is a locking bolt 3, and a threaded hole is arranged on the side wall of the air duct 112 far away from the baffle. The locking bolt 3 is screwed with the threaded hole and is tightened towards the air duct 112. With the tightening of the bolt, the bolt will gradually extend into the air duct 112, and finally the adjusting member 2 will be tightly pressed 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, and the tone color will not change during the playing process.

[0046] The principle and implementation mode of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method and core idea of the present application. Meanwhile, according to the idea of the present application, the specific implementation mode and application range will be changed by the general technical personnel in the field. In conclusion, the content of the present application should not be understood as a limitation of the present application.

Claims

1. A bridge, characterized by: The application relates to a musical instrument, comprising: a musical instrument body (1) provided with a plurality of resonance cavities (11), the resonance cavities (11) comprising air grooves (111) corresponding to the reed plates (4) of a reed plate (4) and forming first resonance cavities, and air channels (112), wherein a baffle is arranged between the air grooves (111) and the air channels (112), the baffle is provided with at least one slowing hole (113) for slowing down the airflow entering the air channels (112) from the air grooves (111).

2. A bridge according to claim 1, wherein: The total cross-sectional area of the slowing holes (113) on the baffle is 4%-20% of the cross-sectional area of the air grooves (111).

3. The bridge of claim 1, wherein: The application further comprises an adjusting member (2), one end of the adjusting member (2) extending into the air channel (112) from the end of the air channel (112) away from the air groove (111) and being in sealing connection with the inner wall of the air channel (112), the air channel (112) between the end of the adjusting member (2) extending into the air channel (112) and the baffle forming a second resonance cavity, and the adjusting member (2) being in sliding connection with the air channel (112) in the length direction of the air channel (112) and being capable of sliding to a preset position to adjust the size of the second resonance cavity.

4. A bridge according to claim 3, wherein: The application further comprises a locking member for locking the adjusting member (2) at the position after the adjusting member (2) slides.

5. A bridge according to claim 4, wherein: The locking member is a locking bolt (3), the side wall of the end of the air channel (112) away from the baffle is provided with a threaded hole, and the locking bolt (3) is in threaded connection with the threaded hole and is capable of extending into the air channel (112) to position the adjusting member (2) in the air channel (112).

6. A bridge according to claim 5, wherein: The adjusting member (2) comprises an adjusting rod (21), the cross section of the air channel (112) is circular or polygonal, and the cross section of the adjusting rod (21) is adapted to the shape of the cross section of the air channel.

7. A bridge according to claim 6, wherein: The adjusting member (2) further comprises a limiting member (22) integrally connected to the end of the adjusting rod (21) extending out of the air channel (112), and the cross-sectional area of the limiting member (22) is greater than that of the air channel (112) to limit the adjusting member (2) from extending into the air channel (112).

8. The bridge of claim 1, wherein: The musical instrument body (1) has a first end and a second end, the plurality of resonance cavities (11) are arranged in parallel in the direction from the first end to the second end, and the length of the air groove (111) of each resonance cavity (11) gradually increases from the first end to the second end.

9. A harmonica, characterized by: The application further relates to a musical instrument comprising the musical instrument body according to any one of claims 1-8.

Images