Tone gear shifting structure and musical instrument

Abstract

The utility model belongs to the technical field of musical instrument accessories, and discloses a tone gear shifting structure and a musical instrument, and the tone gear shifting structure comprises an induction part, a gear shifting device and a gear transmission device. The sensing part and the gear shifting device are oppositely arranged; the gear transmission device comprises a rotor gear part and a stator gear part, the rotor gear part is arranged on the gear shifting device, the stator gear part comprises a stator gear, an elastic part and a limiting plate, one end of the elastic part is connected to the limiting plate, the other end of the elastic part is connected to the stator gear, and the stator gear is arranged on the stator gear. The stator gear and the rotor gear component are mutually meshed, and when the gear shifting device drives the rotor gear component to rotate, the rotor gear component applies acting force to the stator gear, so that the stator gear does telescopic motion within a preset range through an elastic piece. According to the utility model, more accurate tone adjustment is provided, and the tone stability is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of musical instrument accessories, in particular to a tone gear shifting structure and a musical instrument. Background Art

[0002] Electronic musical instruments include electronic guitars, electronic keyboards, electronic drums, etc. However, the pitch gear shifting structure of electronic musical instruments currently used in the market adjusts the pitch of the instrument through a pitch control knob. For example, an electronic musical instrument with patent publication number "CN 207268930U" adjusts the pitch of the ukulele through a pitch knob set on one side of the resonance box, but there is a fuzzy range of each gear when the pitch knob adjusts the pitch, which makes it difficult for users to accurately select the pitch they want. Users cannot satisfactorily adjust the pitch to meet their preferences or specific needs, and the pitch knob is easily moved accidentally by slight touch or vibration during use, which can easily cause accidental changes in the pitch and affect the stability of the performance. Utility Model Content

[0003] The main purpose of the present application is to provide a tone gear shifting structure and a musical instrument, aiming to solve the existing technical problem of using a tone control knob to adjust the tone of a musical instrument.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a tone gear shifting structure, including a sensing part, a gear shifting device and a gear transmission device;

[0005] The sensing part is arranged opposite to the gear shifting device;

[0006] The gear transmission device includes a rotor gear component and a stator gear component. The rotor gear component is arranged on the gear shifting device. The stator gear component includes a stator gear, an elastic member and a limit plate. One end of the elastic member is connected to the limit plate, and the other end is connected to the stator gear. The stator gear and the rotor gear component are meshed with each other. When the gear shifting device drives the rotor gear component to rotate, the rotor gear component applies a force to the stator gear, so that the stator gear can perform telescopic movement within a predetermined range through the elastic member.

[0007] Furthermore, a notch is formed at one end of the limiting plate close to the stator gear, the notch is recessed in a direction away from the stator gear, and the stator gear is located in the notch and connected to the limiting plate through the elastic member.

[0008] Furthermore, the limiting plate is provided with a first baffle and a second baffle distributed at intervals at the bottom of the notch, one end of the elastic member is provided on the second baffle, and the other end is provided in the clamping groove of the stator gear, the first baffle is located between the stator gear and the second baffle, and a first limiting hole for the elastic member to pass through is provided on the first baffle.

[0009] Further, a specified gap is formed between an end of the stator gear away from the rotor gear component and the first baffle, and a depth of the specified gap is greater than or equal to a tooth surface height of the stator gear.

[0010] Furthermore, a connecting column is extended from one end of the stator gear away from the limiting plate toward the rotor gear component, and a first through hole for inserting the connecting column is provided in the rotor gear component.

[0011] Furthermore, the tooth surfaces of the stator gear and / or the rotor gear component are helical teeth corresponding to each other.

[0012] Furthermore, the gear shifting device includes a gear dial and a tuning rod, the tuning rod is located between the gear dial and the rotor gear component, and a second through hole for inserting the gear dial and the rotor gear component is provided in the tuning rod.

[0013] Furthermore, the gear shifting device also includes a first bearing fixing bracket located between the sensing portion and the gear wheel and rotatably connected to the gear wheel via a first bearing; the gear transmission device also includes a second bearing fixing bracket located between the rotor gear component and the limiting plate and rotatably connected to the rotor gear component via a second bearing, and the first bearing fixing bracket and the second bearing fixing bracket are symmetrical to each other with respect to the tuning rod.

[0014] The utility model also proposes a musical instrument, comprising the tone gear shifting structure described in any one of the above items, and also comprising a face shell, wherein the tone gear shifting structure is fixedly connected to the face shell through the gear shifting device and the gear transmission device, and a second limiting hole for the gear shifting device to pass through is provided on the face shell.

[0015] Furthermore, at least one third through hole is provided on the face shell, a plurality of tone coatings corresponding to the third through holes are provided on the gear shift device, and an indicator light is fixedly connected inside the face shell for displaying the tone coating in the third through hole.

[0016] Beneficial effects:

[0017] The utility model is connected by mutual meshing of a stator gear component and a rotor gear component, and the stator gear component performs telescopic movement within a predetermined range as the rotor gear component rotates, and when the gear shifting device rotates from one gear to another, an obvious resistance change can be perceived, so that the user can clearly perceive the difference between each gear, avoiding vague transitions, providing more precise tone adjustment, allowing the user to fine-tune the tone of the instrument, and when the user selects specific tone gears, they will remain in the selected position and are not prone to accidental changes, which helps to ensure the stability of the tone and makes it more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall schematic diagram of a tone gear shifting structure of an embodiment of the utility model;

[0019] Figure 2 It is an overall schematic diagram of a gear transmission device according to an embodiment of the utility model;

[0020] Figure 3 This is an overall schematic diagram of a gear shifting device according to an embodiment of the utility model;

[0021] Figure 4 It is an overall schematic diagram of a musical instrument according to an embodiment of the present utility model.

[0022] in:

[0023] 1. Sensing part; 2. Shifting device; 3. Gear transmission device; 4. Surface shell; 5. Tone shifting structure;

[0024] 20. gear dial; 21. tone rod; 22. second through hole; 23. first bearing; 24. first bearing fixing bracket;

[0025] 30. rotor gear component; 31. stator gear component; 32. second bearing; 33. second bearing fixing bracket;

[0026] 310, stator gear; 311, limiting plate; 312, notch; 313, elastic member; 314, first baffle plate; 315, second baffle plate; 316, clamping groove; 317, first limiting hole; 318, connecting column; 319, first through hole;

[0027] 40. Second limiting hole; 41. Third through hole; 42. Indicator light.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] Reference Figure 1 , this embodiment provides a tone gear shifting structure 5, comprising a sensing part 1, a gear shifting device 2 and a gear transmission device 3; the sensing part 1 is arranged opposite to the gear shifting device 2;

[0034] The gear transmission device 3 includes a rotor gear component 30 and a stator gear component 31. The rotor gear component 30 is arranged on the gear shifting device 2. The stator gear component 31 includes a stator gear 310, an elastic member 313 and a limit plate 311. One end of the elastic member 313 is connected to the limit plate 311, and the other end is connected to the stator gear 310. The stator gear 310 and the rotor gear component 30 are meshed with each other. When the gear shifting device 2 drives the rotor gear component 30 to rotate, the rotor gear component 30 applies a force to the stator gear 31, so that the stator gear 31 performs telescopic movement within a predetermined range through the elastic member 313.

[0035] In the above embodiment, the tone gear shifting structure 5 is mainly used for the tone adjustment device on the guitar, including a sensing part 1, a gear shifting device 2 and a gear transmission device 3, wherein the sensing part 1 is arranged relative to the gear shifting device 2, so that the sensing part 1 can obtain the corresponding tone gear with the rotation detection of the gear shifting device 2, and the sensing part 1 includes but is not limited to a rotary encoder or a magnetic sensor, which helps to provide high-precision position detection and accurately determine the position of the gear shifting device 2, thereby ensuring accurate tone gear switching; the gear transmission device 3 includes a rotor gear component 30 and a stator gear component 31, wherein the rotor gear component 30 is arranged on the gear shifting device 2 , so that the gear shifting device 2 is located between the rotor gear component 30 and the sensing part 1, and the stator gear component 31 includes a stator gear 310, an elastic member 313 and a limiting plate 311, wherein one end of the elastic member 313 is connected to the limiting plate 311, and the other end is connected to the stator gear 310, so that the stator gear 310 is located at the end of the rotor gear component 30 away from the gear shifting device 2 and is meshed with the rotor gear component 30, and the limiting plate 311 is located at the end of the stator gear 310 away from the rotor gear component 30, so that the stator gear 310 is located between the rotor gear component 30 and the limiting plate 311, and the sensing part 1, the gear shifting device 2 and the gear shifting device 2 are located between the rotor gear component 30 and the limiting plate 311. The center of the wheel transmission device 3 is located on the same axis. When the gear shifting device 2 drives the rotor gear component 30 to rotate in the same direction, the rotor gear component 30 applies a force to the stator gear 31. The stator gear 310 rotates with the rotor gear component 30, so that the stator gear 310 can perform telescopic movement within a predetermined range through the elastic member 313, and the motion trajectory formed by the telescopic movement of the stator gear 310 is in a vertical state with the plane formed by the rotation of the rotor gear component 30, ensuring that during the rotation of the rotor gear component 30, the gear shifting device 2 can accurately switch to the preset gear required by the user, so that the rotor gear component 30 and the stator gear 310 can be adjusted. The meshing is more precise, thereby achieving accurate switching of gears. When the gear toggle device 2 rotates from one gear to another, the stator gear 310 is meshed with the rotor gear component 30, and the stator gear 310 performs telescopic movement within a predetermined range as the rotor gear component 30 rotates, and an obvious change in resistance can be perceived, so that the user can clearly perceive the difference between each gear, avoiding vague transitions, providing more precise tone adjustment, allowing the user to fine-tune the tone of the instrument, and when the user selects specific tone gears, they will remain in the selected position and are not prone to accidental changes, which helps to ensure the stability of the tone and make it more reliable.

[0036] Reference Figure 1-Figure 2, in one embodiment, a notch 312 is formed at one end of the limiting plate 311 close to the stator gear 310. The notch 312 is recessed away from the stator gear 310, and the stator gear 310 is located within the notch 312 and connected to the limiting plate 311 through the elastic member 313.

[0037] In the above embodiment, a U-shaped notch 312 is formed at one end of the limiting plate 311 close to the stator gear 310, and the notch 312 is recessed away from the stator gear 310. The stator gear 310 is located within the notch 312 and connected to the limiting plate 311 through the elastic member 313. The elastic member 313 is preferably a spring, ensuring that the stator gear 310 can perform telescopic movement within the notch 312, which helps the stator gear 310 to adapt to the switching of different gears and the changes in the transmission system, ensuring that the meshing connection between the stator gear 310 and the rotor gear component 30 always remains tight. In addition, the length of the stator gear 310 is greater than the depth of the notch 312. When the stator gear 310 is fixedly connected to the second bearing fixing bracket 33 and performs telescopic movement, there is a certain telescopic distance between the second bearing fixing bracket 33 and the limiting plate 311, ensuring that the movement of the stator gear 310 will not be restricted by the second bearing fixing bracket 33, enabling the rotor gear component 30 to smoothly perform gear shifting without being blocked or jammed due to the stator gear 310 being obstructed, effectively improving the stability of the transmission system.

[0038] Refer to Figure 1-Figure 2 , in one embodiment, the limiting plate 311 is provided with a first baffle 314 and a second baffle 315 which are spaced apart at the bottom of the notch 312. One end of the elastic member 313 is disposed on the second baffle 315, and the other end is disposed in the clamping groove 316 of the stator gear 310. The first baffle 314 is located between the stator gear 310 and the second baffle 315, and a first limiting hole 317 for the elastic member 313 to pass through is provided on the first baffle 314.

[0039] In the above embodiment, a first baffle plate 314 and a second baffle plate 315 are provided on the limiting plate 311, wherein the first baffle plate 314 and the second baffle plate 315 are spaced apart and distributed at the bottom of the end of the notch 312 of the limiting plate 311 away from the stator gear 310, for placing the elastic member 313, and one end of the elastic member 313 is fixedly connected to the second baffle plate 315, and a snap-in groove 316 recessed toward the rotor gear component 30 is formed at the end of the stator gear 310 close to the limiting plate 311, so that the elastic member 313 is connected to the snap-in groove 316 relative to the other end connected to the second baffle plate 315, and the first baffle plate 314 is located between the stator gear 310 and the second baffle plate 315, so that a first limiting hole 317 for the elastic member 313 to pass through is provided on the first baffle plate 314, which helps to limit the movement range of the elastic member 313 and ensure that the elastic member 313 does not swing left and right when it is compressed and moves, which helps to improve the stability and reliability of the entire tone gear shifting structure 5.

[0040] Reference Figure 1-Figure 2 In one embodiment, a specified gap is formed between one end of the stator gear 310 away from the rotor gear component 30 and the first baffle 314 , and the depth of the specified gap is greater than or equal to the tooth surface height of the stator gear 310 .

[0041] In the above embodiment, a specified gap is formed between the end of the stator gear 310 away from the rotor gear component 30 and the first baffle 314, ensuring that the stator gear 310 has a certain movement space when telescopically moving toward the first baffle 314, and the distance that the stator gear 310 moves in the specified gap is greater than or equal to the distance from the root to the top of the tooth in the tooth surface of the stator gear 310, ensuring that the top of the tooth surface of the rotor gear component 30 can smoothly move from the root to the top of the tooth on the tooth surface of the stator gear 310, avoiding the rotor gear component 30 from being stuck or obstructed during gear shifting, ensuring the smoothness and accuracy of the gear shifting operation, and in addition, a certain working gap is formed between the adjacent two sides of one end of the stator gear 310 where the clamping groove 316 is provided and the two sides of the notch 312, ensuring that the stator gear 310 does not contact each other when moving in the notch 312, reducing friction and wear when contacting each other, helping to extend the service life of the stator gear 310 and the limit plate 311, and reducing maintenance costs.

[0042] Reference Figure 1-Figure 2 In one embodiment, a connecting column 318 is extended from one end of the stator gear 310 away from the limiting plate 311 toward the rotor gear component 30 , and a first through hole 319 is provided in the rotor gear component 30 for inserting the connecting column 318 .

[0043] In the above embodiment, a connecting column 318 is provided at one end of the stator gear 310 away from the limiting plate 311, and the connecting column 318 is located at the center position of the stator gear 310 and extends toward the rotor gear component 30, and is located on the same axis as the gear shaft of the stator gear 310. In addition, a first through hole 319 for inserting the connecting column 318 is provided at the center position of the rotor gear component 30, wherein the connecting column 318 is connected to the first through hole 319 in a tight fit manner. Guided by the connecting column 318, the stator gear 310 can be accurately inserted into the first through hole 319 of the rotor gear component 30, so that the positional relationship between the two is more stable and precise, which helps to accurately align and position the stator gear 310 and the rotor gear component 30, and at the same time ensures that the rotor gear component 30 can smoothly receive and transmit power, thereby ensuring the normal operation of the tone gear shifting structure 5.

[0044] Reference Figure 1-Figure 2 In one embodiment, the tooth surface of the stator gear 310 and / or the rotor gear component 30 is a helical tooth.

[0045] In the above embodiment, at least one of the tooth surfaces of the stator gear 310 and the rotor gear component 30 is a helical tooth, so that when the tooth surface of the stator gear 310 is a helical tooth, the tooth surface of the rotor gear component 30 is a straight tooth, or the tooth surfaces of the stator gear 310 and the rotor gear component 30 are both helical teeth, and when the connecting column 318 is inserted into the first through hole 319, the stator gear 310 and the rotor gear component 30 are arranged to correspond to each other when the tooth surfaces are helical teeth, so that the tooth top of the stator gear 310 is located at the tooth root of the rotor gear component 30, and the stator gear 310 is located at the tooth root of the rotor gear component 30. The two adjacent side surfaces of the helical teeth of the wheel 310 and the rotor gear component 30 are spirally shaped, so that one side surface of the stator gear 310 and the rotor gear component 30 rotates spirally clockwise along the axis direction of the gear, and the other adjacent side surface rotates spirally counterclockwise along the axis direction of the gear, so that the helical teeth of the stator gear 310 and the rotor gear component 30 gradually contact each other when they are meshing, ensuring that the two have the maximum meshing area when rotating, enhancing the meshing effect, reducing meshing wear and noise, and helping to improve the stability and efficiency of the tone gear shifting structure 5 during transmission.

[0046] Reference Figure 1-Figure 3 In one embodiment, the gear shifting device 2 includes a gear dial 20 and a tuning rod 21, the tuning rod 21 is located between the gear dial 20 and the rotor gear component 30, and a second through hole 22 for inserting the gear dial 20 and the rotor gear component 30 is provided in the tuning rod 21.

[0047] In the above embodiment, the gear dial device 2 includes a gear dial 20 and a tone rod 21, wherein the tone rod 21 is located between the gear dial 20 and the rotor gear component 30, and is used to transmit the dialing force of the gear dial 20 to the rotor gear component 30, so that it moves according to corresponding requirements, ensuring that the dialing force of the gear dial 20 is accurately transmitted to the rotor gear component 30, so that the gear shifting action is more accurate, so that the performer can accurately adjust the tone of the musical instrument, and a second through hole 22 is provided in the tone rod 21, wherein the second through hole 22 is used for the gear dial 20 and the rotor gear component 30 to be inserted, and the gear dial 20 and the rotor gear component 30 are connected in the second through hole 22 by a tight fit. When the gear dial 20 and the rotor gear component 30 are assembled to the tone rod 21, these components can be more easily inserted into the correct position through the second through hole 22, thereby simplifying the assembly process and improving the assembly efficiency.

[0048] Reference Figure 1-Figure 3 In one embodiment, the gear shifting device 2 also includes a first bearing fixing bracket 24 located between the sensing portion 1 and the gear dial 20 and rotatably connected to the gear dial 20 via a first bearing 23; the gear transmission device 3 also includes a second bearing fixing bracket 33 located between the rotor gear component 30 and the limiting plate 311 and rotatably connected to the rotor gear component 30 via a second bearing 32, and the first bearing fixing bracket 24 and the second bearing fixing bracket 33 are symmetrical to each other with respect to the tuning rod 21.

[0049] In the above embodiment, the gear shifting device 2 further includes a first bearing fixing bracket 24, and the first bearing fixing bracket 24 is located between the sensing part 1 and the gear dial 20, and is rotatably connected to the gear dial 20 through the first bearing 23, so that the rotating shaft on one side of the gear dial 20 is connected to the second through hole 22, and the rotating shaft on the other side is connected to the sensing part 1, and the gear dial 20 is rotated in the first bearing fixing bracket 24 through the first bearing 23 set on the rotating shaft on the other side of the gear dial 20, and the gear transmission device 3 further includes a second bearing fixing bracket 33, and the second bearing fixing bracket 33 is located at the rotor The gear component 30 and the limit plate 311 are rotatably connected to the rotor gear component 30 through the second bearing 32, so that one end of the rotating shaft of the rotor gear component 30 is connected to the second through hole 22, and the other end of the rotating shaft is meshed and connected with the stator gear 310. The rotor gear component 30 is rotated in the second bearing fixing bracket 33 through the second bearing 32 set on the rotating shaft on the other side of the rotor gear component 30. The gear dial 20 and the rotor gear component 30 are rotatably connected through the bearing, which helps to reduce the wear between the metal parts when they are in direct contact during rotation, thereby extending the service life of the tone gear shifting structure 5.

[0050] Reference Figure 1-Figure 4 The utility model also proposes a musical instrument, including the tone gear shifting structure 5 described in any of the above embodiments, and also including a face shell 4, wherein the tone gear shifting structure 5 is fixedly connected to the face shell 4 through the gear shifting device 2 and the gear transmission device 3, and a second limiting hole 40 is provided on the face shell 4 for the gear shifting device 2 to pass through.

[0051] In the above embodiment, the musical instrument includes a tone gear shifting structure 5 and a face shell 4, wherein the tone gear shifting structure 5 is fixedly connected to the face shell 4 through the gear shifting device 2 and the gear transmission device 3, and the fixed connection method is preferably through bolt connection. In addition, the sensing part 1 of the tone gear shifting structure 5 is clamped in the face shell 4 to ensure that the tone gear shifting structure 5 is firmly and stably arranged on the face shell 4 to avoid malfunction when the musical instrument is used. In addition, a gear dial 20 for the gear shifting device 2 to pass through is provided on the face shell 4. There is a second limiting hole 40 passing through the surface shell 4, and the arc length of the second limiting hole 40 is smaller than the diameter of the gear dial 20. There is a certain working gap between the second limiting hole 40 and the gear dial 20, ensuring that when part of the gear dial 20 is located outside the surface shell 4, the performer can turn the gear dial 20 at any time for rotation, and at the same time avoid friction between the gear dial 20 and the side of the second limiting hole 40, so that the gear dial 20 can be turned more smoothly, thereby improving the accuracy of the tone gear shifting structure 5 when shifting.

[0052] Reference Figure 1-Figure 4 In one embodiment, at least one third through hole 41 is provided on the face shell 4, a plurality of tone coatings corresponding to the third through hole 41 are provided on the gear shift device 2, and an indicator light 42 for displaying the tone coating in the third through hole 41 is fixedly connected to the face shell 4.

[0053] In the above embodiment, at least one third through hole 41 is arranged on one side of the second limiting hole 40 of the face shell 4, and a plurality of tone coatings corresponding to the third through hole 41 are arranged on the tone rod 21 of the gear shifting device 2, wherein the tone rod 21 is a polygonal structure, so that a tone coating is arranged on each side edge of the outer surface of the tone rod 21, and an indicator light 42 is fixedly connected to the inside of the face shell 4 and at a position corresponding to the third through hole 41. The indicator light 42 is used to display the tone coating in the third through hole 41, which helps the performer to clearly see the change of the gear in the third through hole 41 when turning the gear shifting device 2, thereby better controlling the performance process and ensuring the accuracy and stability of the performance.

[0054] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A tone gear shifting structure, characterized in that: It includes a sensing part, a gear shifting device and a gear transmission device; The sensing part is arranged opposite to the gear shifting device; The gear transmission device includes a rotor gear component and a stator gear component. The rotor gear component is arranged on the gear shifting device. The stator gear component includes a stator gear, an elastic member and a limit plate. One end of the elastic member is connected to the limit plate, and the other end is connected to the stator gear. The stator gear and the rotor gear component are meshed with each other. When the gear shifting device drives the rotor gear component to rotate, the rotor gear component applies a force to the stator gear, so that the stator gear can perform telescopic movement within a predetermined range through the elastic member.

2. The tone gear shifting structure according to claim 1, characterized in that: A notch is formed at one end of the limiting plate close to the stator gear, the notch is recessed in a direction away from the stator gear, and the stator gear is located in the notch and connected to the limiting plate through the elastic member.

3. The tone gear shifting structure according to claim 2, characterized in that: The limiting plate is provided with a first baffle and a second baffle distributed at intervals at the bottom of the notch, one end of the elastic member is provided on the second baffle, and the other end is provided in the clamping groove of the stator gear, the first baffle is located between the stator gear and the second baffle, and a first limiting hole for the elastic member to pass through is provided on the first baffle.

4. The tone gear shifting structure according to claim 3, characterized in that: A specified gap is formed between one end of the stator gear away from the rotor gear component and the first baffle, and a depth of the specified gap is greater than or equal to a tooth surface height of the stator gear.

5. The tone gear shifting structure according to claim 2, characterized in that: A connecting column is extended from one end of the stator gear away from the limiting plate toward the rotor gear component, and a first through hole for inserting the connecting column is provided in the rotor gear component.

6. The tone gear shifting structure according to claim 2, characterized in that: The tooth surfaces of the stator gear and / or the rotor gear component are helical teeth.

7. The tone gear shifting structure according to claim 2, characterized in that: The gear shifting device comprises a gear dial and a tuning rod, wherein the tuning rod is located between the gear dial and the rotor gear component, and a second through hole for inserting the gear dial and the rotor gear component is arranged in the tuning rod.

8. The tone gear shifting structure according to claim 7, characterized in that: The gear shifting device also includes a first bearing fixing bracket located between the sensing portion and the gear dial and rotatably connected to the gear dial via a first bearing; the gear transmission device also includes a second bearing fixing bracket located between the rotor gear component and the limiting plate and rotatably connected to the rotor gear component via a second bearing, and the first bearing fixing bracket and the second bearing fixing bracket are symmetrical to each other with respect to the tuning rod.

9. A musical instrument, characterized in that It comprises the tone gear shifting structure as described in any one of claims 1 to 8, and also comprises a face shell, wherein the tone gear shifting structure is fixedly connected to the face shell through the gear shifting device and the gear transmission device, and a second limiting hole for the gear shifting device to pass through is provided on the face shell.

10. The musical instrument according to claim 9, characterized in that At least one third through hole is provided on the face shell, a plurality of tone coatings corresponding to the third through holes are provided on the gear shift device, and an indicator light for displaying the tone coating in the third through hole is fixedly connected inside the face shell.

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