Tuning support, sound production device, and audio equipment

Abstract

The utility model discloses a sound adjusting support, sound production device and audio frequency equipment relates to the technical field of audio frequency equipment, wherein, the ring plate part that presents annularly is formed on the sound adjusting support, the airflow channel is formed in the ring plate part, and the first airflow mouth and the second airflow mouth that communicate the airflow channel are equipped respectively in the both sides of ring plate part thickness direction, and in the projection of ring plate part thickness direction, the first airflow mouth and the second airflow mouth are staggered and set up.

Description

Technical Field

[0001] This utility model relates to the field of audio equipment technology, and in particular to a tuning stand, a sound-generating device, and an audio device. Background Technology

[0002] In the acoustic design of miniature loudspeakers, the vent is a core element affecting sound quality, and its structure directly relates to key performance characteristics such as the loudspeaker's resonant frequency, low-frequency response, and damping characteristics.

[0003] Currently, curved pipe-type vents have become an existing technology. By extending the length of the vent, the acoustic quality adjustment space is increased. At the same time, the curved structure reduces the interference of standing waves on acoustic performance, thus overcoming to some extent the problem of limited length of traditional straight-through vents. Utility Model Content

[0004] The main purpose of this invention is to propose a tuning bracket, a sound-generating device, and an audio device, aiming to solve the technical problem that although existing curved pipe-type vent holes increase the sound quality adjustment space and reduce standing wave interference by extending the channel length, there is still a problem of how to further optimize the extended curved channel structure to more accurately control key performance such as resonant frequency, low-frequency response, and damping characteristics.

[0005] To achieve the above objectives, the present invention proposes a tuning bracket, which has a ring plate portion formed on the tuning bracket, an airflow channel formed in the ring plate portion, and a first airflow port and a second airflow port connected to the airflow channel respectively provided at both ends of the ring plate portion in the thickness direction.

[0006] In the projection along the thickness direction of the ring plate portion, the first airflow port and the second airflow port are staggered.

[0007] This utility model also proposes a sound-generating device, which includes a tuning bracket;

[0008] A ring plate portion is formed on the tuning bracket, and an airflow channel is formed inside the ring plate portion. A first airflow port and a second airflow port communicating with the airflow channel are respectively provided at both ends of the ring plate portion in the thickness direction.

[0009] In the projection along the thickness direction of the ring plate portion, the first airflow port and the second airflow port are staggered.

[0010] This utility model also proposes an audio device, which includes a sound-generating device, and the sound-generating device includes a tuning bracket;

[0011] A ring plate portion is formed on the tuning bracket, and an airflow channel is formed inside the ring plate portion. A first airflow port and a second airflow port communicating with the airflow channel are respectively provided at both ends of the ring plate portion in the thickness direction.

[0012] In the projection along the thickness direction of the ring plate portion, the first airflow port and the second airflow port are staggered. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the tuning bracket provided by this utility model at a first angle;

[0015] Figure 2 for Figure 1 A top view of the tuning stand;

[0016] Figure 3 for Figure 1 A three-dimensional schematic diagram of the unobstructed airflow channel of the tuning stand;

[0017] Figure 4 for Figure 1 A cross-sectional view of the tuning bracket in the diagram;

[0018] Figure 5 for Figure 1 A schematic diagram of the tuning stand from below;

[0019] Figure 6 for Figure 1 A three-dimensional structural diagram of the mid-range tuning bracket at the second angle.

[0020] Explanation of icon numbers:

[0021] 100. Tuning bracket; 1. Ring plate; 11. Airflow channel; 12. First airflow inlet; 13. Second airflow inlet; 111. First curved section; 112. Second curved section; 14. Recessed groove; 15. Mounting groove; 2. Inner sleeve; 3. Outer sleeve; 4. Shielding section.

[0022] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] 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 scope of protection of the present utility model.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] In the acoustic design of miniature loudspeakers, the vent is a core element affecting sound quality, and its structure directly relates to key performance characteristics such as the loudspeaker's resonant frequency, low-frequency response, and damping characteristics. Currently, curved pipe-type vents have become the existing technology. By extending the vent length, they increase the sound quality adjustment space, while the curved structure reduces the interference of standing waves on acoustic performance, thus overcoming to some extent the problem of limited length in traditional straight-through vents.

[0027] In view of this, the present invention provides a tuning bracket to solve the technical problem of how to further optimize the extended curved channel structure to more accurately control key performance such as resonant frequency, low frequency response and damping characteristics. Figure 1-6 This is a schematic diagram of the first embodiment of the tuning stand of this utility model. This utility model proposes one embodiment of the tuning stand.

[0028] Please see Figure 1-2A ring plate portion 1 is formed on the tuning bracket 100 in an annular arrangement. An airflow channel 11 is formed inside the ring plate portion 1. First airflow ports 12 communicating with the airflow channel 11 are respectively provided at both ends of the ring plate portion 1 in the thickness direction (see details). Figure 5 or Figure 6 The first air outlet 12 and the second air outlet 13 are staggered in projection along the thickness direction of the annular plate portion 1.

[0029] In practical implementation, the tuning bracket 100 is a structural component used to adjust the propagation state of fluids or energy such as airflow and sound waves. Its application scenarios are mainly concentrated in devices requiring precise control of airflow or sound wave characteristics, such as audio equipment. In devices like loudspeakers and speaker enclosures, the design of the internal airflow channel 11 can adjust airflow disturbances during sound wave propagation, reducing noise, optimizing sound quality, and making the sound output clearer and more stable. The tuning bracket 100 is a ring-shaped plate 1, which has an airflow channel 11 formed inside. The airflow channel 11 is connected to the outside through a first airflow port 12 and a second airflow port 13, respectively. The first airflow port 12 and the second airflow port 13 are correspondingly located at opposite ends of the ring-shaped plate 1 along its thickness direction. On the projection plane along the thickness direction of the ring-shaped plate 1, the projections of the first airflow port 12 and the second airflow port 13 do not coincide, meaning they are staggered. The ring plate portion 1 on the tuning bracket 100 is arranged in a ring shape. This ring structure allows the airflow channel 11 formed inside to have an extended channel length. Compared with the traditional curved pipe-type vent, it can further increase the sound quality adjustment space within a limited space. This is an optimization of the extended curved channel structure. At the same time, the projections of the first airflow port 12 and the second airflow port 13 at both ends of the ring plate portion 1 in the thickness direction are staggered. This layout makes the airflow path more tortuous and reasonable when passing through the airflow channel 11, optimizing the airflow state. In the above structure, the annular airflow channel 11 extends the channel length, providing a basic condition for more precise control of resonant frequency, low-frequency response, and damping characteristics. The staggered airflow ports can reduce the generation and interference of standing waves, making the vibration of the airflow in the channel more in line with expectations, further improving the control precision of these key acoustic performances. Thus, it effectively solves the technical problem of how to further optimize the extended curved channel structure to more precisely control key performances such as resonant frequency, low-frequency response, and damping characteristics.

[0030] It is understood that the airflow channel 11 refers to the hollow cavity structure formed inside the ring plate 1 along its annular contour. This channel provides a flow path for airflow, and its cross-sectional shape and size can be designed according to the airflow adjustment requirements.

[0031] It is understood that the thickness direction of the ring plate portion 1 refers to the normal direction between the two end faces of the ring plate portion 1, that is, the direction perpendicular to the surface of the ring plate portion 1. This direction is the reference direction for defining the positional relationship between the first airflow port 12 and the second airflow port 13.

[0032] It is understandable that the staggered setting means that when the projection is made along the thickness direction of the ring plate portion 1, the projection area of ​​the first airflow port 12 and the projection area of ​​the second airflow port 13 do not overlap, that is, the two do not coincide in the planar projection position of the ring plate portion 1. This setting can force the airflow to change the flow direction in the airflow channel 11 and avoid the airflow from passing through in a straight line.

[0033] It is understood that the ring plate 1 is an annular plate structure integrally formed or fixedly installed on the tuning bracket 100. It has a closed annular contour, such as a circular ring, a square ring, or other closed annular plate structure. It is the main structure that carries the airflow channel 11, and its material and thickness can be set according to the actual application scenario.

[0034] In this embodiment, the airflow channel 11 is optimized. Specifically, a porous sound-absorbing material, such as sound-absorbing cotton or a porous metal structure, is provided inside the airflow channel 11. When the airflow passes through, the sound-absorbing properties of the material absorb some high-frequency noise, forming a synergistic noise reduction effect with the channel structure. This is especially suitable for audio equipment or ventilation systems with high requirements for quietness.

[0035] The technical solution of this utility model employs a tuning bracket 100 for audio equipment. The tuning bracket 100 is a ring plate portion 1, which is arranged in a ring shape and has an airflow channel 11 formed inside. The airflow channel 11 is connected to the outside through a first airflow port 12 and a second airflow port 13, respectively. The first airflow port 12 and the second airflow port 13 are respectively opened at two ends in the thickness direction of the ring plate portion 1. Furthermore, on the projection plane along the thickness direction of the ring plate portion 1, the projections of the first airflow port 12 and the second airflow port 13 do not coincide, that is, they are staggered. When the airflow enters the airflow channel 11 through the first airflow port 12, the airflow cannot pass through directly due to the staggered arrangement of the two airflow ports. Instead, it is forced to form a turning flow within the annular airflow channel 11. This design extends the airflow path and changes the airflow velocity and pressure distribution. This design effectively reduces airflow disturbance during sound wave propagation, thereby reducing noise, optimizing sound quality, making the sound output clearer and more stable, and significantly improving the tuning effect. It is especially suitable for devices such as loudspeakers and speaker cabinets that require precise control of airflow or sound wave characteristics.

[0036] It is understood that in this embodiment, the projection arrangement of the first airflow port 12 and the second airflow port is not limited. For example, they can be arranged radially along the ring plate portion 1 or circumferentially along the ring plate portion 1.

[0037] For some specific embodiments, please refer to Figures 3-5 In the projection along the thickness direction of the annular plate portion 1, the first airflow port 12 and the second airflow port 13 are staggered along the circumference of the annular plate portion 1. For details, please refer to [reference needed]. Figure 1 and Figure 6 The annular plate portion 1 itself is an annular structure, and the airflow channel 11 inside extends along the annular contour. When the first airflow port 12 and the second airflow port 13 are circumferentially offset, the airflow entering from the first airflow port 12 cannot directly flow in a straight line to the second airflow port 13. It must flow circumferentially along the annular channel of the annular plate portion 1 for a certain distance before being discharged from the second airflow port 13. This structure allows the airflow to follow a circular trajectory, significantly extending the flow path of the airflow within the channel and allowing for a longer interaction time between the airflow and the channel wall. This provides more space for subsequent passage through the channel structure, adjustment of airflow speed, and pressure distribution. At the same time, the circumferentially offset airflow ports allow the airflow to better conform to the curvature changes of the annular channel when turning. Compared to non-annular structures, such as straight channels with offset openings, annular channels can guide the airflow to complete the turning with a smoother curved motion, reducing unstable flow states such as turbulence and eddies caused by sharp turns.

[0038] In some specific embodiments, in the projection along the thickness direction of the annular plate portion 1, the first airflow port 12 and the second airflow port 13 are arranged radially along the annular plate portion, that is, the two airflow ports are distributed inward and outward in the radial direction of the annular plate portion. The first airflow port 12 is located near the inner edge of the annular plate portion, and the second airflow port 13 is located near the outer edge of the annular plate portion, forming a misalignment in the radial direction. If the radial misalignment is adopted, the airflow will enter from the first airflow port 12, flow radially along the annular plate portion, and be discharged from the second airflow port 12. The airflow path is relatively short, and the residence time of the airflow in the channel is short, which is more suitable for scenarios that require rapid airflow discharge.

[0039] It should be understood that the staggered arrangement between the first airflow port 12 and the second airflow port 13 is not limited to the above-mentioned arrangement along the circumference of the ring plate portion 1. Any other suitable staggered arrangement known to those skilled in the art can also be adopted, as long as the two are not overlapped in the projection along the thickness direction of the ring plate portion 1, and the airflow is ensured to form a turning flow in the airflow channel 11 of the ring plate portion 1 to achieve the adjustment of the airflow state.

[0040] In the technical solution of this utility model, the specific cross-sectional shape of the airflow channel is not limited, such as it can be circular, rectangular, or square. The extension path of the airflow channel is also not limited; it can extend along a straight line, along a curve, or extend along a straight line and then along a curve; or extend along a curve and then along a straight line; or a combination of multiple extension methods; all of the above are within the protection scope of this utility model.

[0041] For some specific embodiments, please refer to Figure 3 The airflow channel 11 has two inner walls distributed radially along the annular plate portion 1, and either inner wall of the channel is arranged in a curved extension.

[0042] It is understood that the inner walls of the two channels arranged radially along the ring plate portion 1 are usually set to be parallel. In this embodiment, the extension shape of any one of the inner walls of the channel determines the extension shape of the entire airflow channel 11.

[0043] To achieve better sound quality, the airflow trajectory within the airflow channel 11 needs to be controlled to optimize acoustic characteristics. The extension path of the airflow channel 11 is often set to a curved shape. This can be a uniform curved shape, such as having the same radius of curvature and the same curved shape; it can also have the same curved shape, but with different radii of curvature at different curve ends; it can also have the same radius of curvature, but with the curved shapes reversed; or it can have different curved shapes and different radii of curvature.

[0044] For some specific embodiments, please refer to [link / reference]. Figure 3 The inner wall of the channel has a first curved section 111 and a second curved section 112 that are smoothly connected to each other. The center of curvature of the first curved section 111 is located inside the airflow channel 11, and the center of curvature of the second curved section 112 is located outside the airflow channel 11. It can be understood that the inner center of curvature of the first curved section 111 is adapted to the inner radius of the ring plate portion 1, and the outer center of curvature of the second curved section 112 is adapted to the outer radius of the ring plate portion 1. The curvature parameters of the two curved sections can be designed in relation to the inner and outer diameter dimensions of the ring plate portion 1, so that the inner wall of the channel and the overall annular structure of the ring plate portion 1 form a mechanically coordinated relationship. This coordinated performance disperses the local stress generated by the airflow impact, avoids structural resonance, and allows the airflow channel 11 to achieve a longer effective action path within the limited space of the ring plate portion 1, improving the tuning efficiency per unit volume.

[0045] In some specific embodiments, the inner wall of the channel can also be configured as being composed of multiple inclined straight segments connected end to end, with a certain angle between adjacent straight segments, and the angle changing gradually from the airflow inlet to the outlet, for example, gradually increasing or decreasing. This zigzag structure allows the airflow to undergo phased deflections within the channel, and the sound quality can be optimized by controlling the deflection angle and frequency.

[0046] In some preferred embodiments, to further optimize the airflow guidance effect and enhance the stability of the structure, the annular plate portion 1 is designed to have a certain thickness, which is divided into a first side end and a second side end in the thickness direction. The tuning bracket 100 includes an inner sleeve portion 2 disposed on the inner side of the annular plate portion 1 and an outer sleeve portion 3 disposed on the outer side of the annular plate portion 1. The inner sleeve portion 2 protrudes from the first side end, and the outer sleeve portion 3 protrudes from the second side end. The second airflow port 13 is disposed on the second side end and corresponds to the first curved section 111, and the first airflow port 12 is disposed on the first side end and corresponds to the second curved section 112. The inner sleeve portion 2 protrudes from the first side end of the annular plate portion 1, and the outer sleeve portion 3 protrudes from the second side end, so that the two sides of the annular plate portion 1 form a staggered protrusion structure along the thickness direction. This layout places the first airflow port 12 and the second airflow port 13 on different planes on both sides of the annular plate portion 1. Combined with their staggered arrangement in the circumferential direction, it further lengthens the difference between the inlet and outlet paths of the airflow.

[0047] The existing structure of curved vent holes still has limitations: their aperture size is fixed, and once formed, it cannot be flexibly adjusted according to actual usage needs. This limits the variability of sound quality to a fixed range, making it difficult to adapt to the acoustic performance requirements of different scenarios, such as the differentiated needs for low-frequency response and damping characteristics in music playback and voice calls. In the specific implementation process, the air passage area of ​​the second air outlet 13 is designed to be adjustable.

[0048] Understandably, when the air passage area is reduced, the airflow forms a throttling effect at the second airflow inlet 13. Combined with the guidance of the first curved section 111, this can increase the outlet airflow velocity and enhance the local pressure gradient, making it suitable for scenarios that require strengthening high-frequency sound wave transmission or suppressing low-frequency resonance. When the air passage area is increased, the airflow discharge resistance is reduced. Combined with the smooth transition of the first curved section 111, this can reduce airflow impact noise and make low-frequency sound waves more stable, making it suitable for scenarios that require weakening high-frequency interference and improving low-frequency response. This dynamic adjustment capability allows the tuning bracket 100 to flexibly adjust the airflow characteristics according to different operating conditions, breaking through the limitations of a single fixed airflow inlet.

[0049] To facilitate flexible adjustment of the air passage area of ​​the second air inlet 13 to adapt to different acoustic requirements, please refer to [further details needed]. Figure 3The first airflow port 12 is disposed through the first side end and the second side end of the annular plate portion 1. A recessed groove 14 is provided at the second side end, and the side wall of the recessed groove 14 is connected to the first airflow port 12. A blocking part 4 is provided on the second side end, and the blocking part 4 always covers the first airflow port 12. The blocking part 4 covers part of the groove opening of the recessed groove 14, so that the remaining part of the groove opening is exposed to form the second airflow port 13. The position of the blocking part 4 on the second side end can be adjusted to adjust the size of the second airflow port 13. It can be understood that the recessed groove 14 is connected to the first airflow port 12 through the groove side wall, without the need to open a separate second airflow channel 11. This design relies on the cooperation of the recessed groove 14 and the blocking part 4 to form the second airflow port 13, avoiding the complex cross-channel processing inside the annular plate portion 1, reducing the difficulty of mold manufacturing or machining, and reducing the risk of dimensional accuracy errors caused by complex channel structure, thereby improving production feasibility.

[0050] It is understood that the shielding part 4 always covers the first airflow port 12, preventing airflow from leaking directly from the outlet of the first airflow port 12 at the second side end. The second airflow port 13 is formed only by covering a portion of the recessed groove 14. When the position of the shielding part 4 at the second side end is adjusted, its covering area of ​​the recessed groove 14 changes synchronously, making the exposed groove area continuously adjustable. The recessed groove 14 is recessed into the surface of the second side end, and its sidewall guides the airflow from the first airflow port 12 to flow along the groove direction towards the second airflow port 13. This design ensures that the airflow is constrained and guided by the recessed groove 14 before exiting, preventing airflow diffusion when exiting directly from the planar opening and enhancing the stability of the airflow exit direction. Meanwhile, the depth and orientation of the recessed groove 14 can be matched with the first curved section 111 and the second curved section 112 of the airflow channel 11 of the ring plate 1, so that the airflow flows out from the inner wall of the channel and smoothly transitions to the second airflow port 13 through the recessed groove 14, reducing local turbulence loss and improving tuning efficiency.

[0051] To improve the installation stability and adjustment accuracy of the shielding part 4, please refer to... Figure 4A mounting groove 15 is provided on the second side end. The first airflow port 12 and the recessed groove 14 are both provided corresponding to the mounting groove 15. The shielding part 4 is provided in the mounting groove 15; and / or, the shielding part 4 is attached to the annular plate part 1. It can be understood that the mounting groove 15 is provided on the second side end, and the first airflow port 12 and the recessed groove 14 are both provided corresponding to the mounting groove 15. The shielding part 4 is embedded in the mounting groove 15 to form a groove limiting structure. The side wall of the mounting groove 15 can limit the offset of the shielding part 4 during the adjustment process, such as lateral movement, to ensure that the shielding part 4 only moves along a preset direction, such as the length direction of the recessed groove 14, thus ensuring the linear accuracy of the adjustment of the second airflow port 13. It is understood that the shielding part 4 is attached to the second side end surface of the ring plate part 1 or the inner wall of the mounting groove 15. On the one hand, the tight fit reliably covers the first airflow port 12, preventing airflow from leaking from the gap between the shielding part 4 and the ring plate part 1, and ensuring that all airflow is discharged through the second airflow port 13. On the other hand, the attachment structure allows the thickness of the shielding part 4 to be designed to be thinner, reducing the space occupied on the second side end of the ring plate part 1. In particular, it is suitable for the layout of the outer sleeve part 3 protruding from the second side end, avoiding structural interference between the shielding part 4 and the outer sleeve part 3, and enhancing the compactness of the overall structure.

[0052] The connection between the shielding part 4 and the ring plate part 1 is not limited to embedding or attaching. Any other suitable connection method known to those skilled in the art can be used, as long as the position of the shielding part 4 on the second side end of the ring plate part 1 can be adjusted, and the shielding part 4 can always cover the first airflow port 12 and the coverage of the recessed groove 14 can be adjusted by changing the position to change the size of the second airflow port 13.

[0053] In some embodiments, a magnetic element is embedded in the edge region of the recessed groove 14 corresponding to the second side end of the annular plate portion 1. The blocking portion 4 is made of a magnetically attractable material and is magnetically attracted to the surface of the second side end, covering part of the recessed groove 14. During adjustment, applying external force can push the blocking portion 4 to slide along the second side end, changing its coverage area of ​​the recessed groove 14. This structure requires no additional connecting parts, is easy to assemble, and the magnetic attraction force can be designed by the magnetic strength of the magnetic element to ensure the positional stability of the blocking portion 4 in the non-adjusted state while achieving smooth adjustment. In addition, a positioning scale can be provided on the second side end to improve the adjustment accuracy in conjunction with the sliding trajectory of the blocking portion 4.

[0054] In some embodiments, multiple slots can be spaced apart on the two side walls of the recessed groove 14, and elastic claws that can fit into the slots are provided on both sides of the blocking part 4. The blocking part 4 achieves a stepped adjustment of the coverage area of ​​the recessed groove 14 by engaging the elastic claws with the slots at different positions, thereby changing the size of the second airflow port 13. This design achieves positioning through the cooperation of the slots and claws, and the structure has strong stability after adjustment, making it suitable for scenarios with specific requirements for adjustment levels. At the same time, the elastic claws have a certain deformation capability, making it easy for users to manually switch the slot positions, which is convenient and low-cost.

[0055] Furthermore, this utility model embodiment also proposes a sound-generating device. The sound-generating device includes the tuning bracket 100 as described above. Since the sound-generating device employs all the technical solutions of all embodiments of the tuning bracket 100 described above, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0056] This utility model embodiment also proposes an audio device. The audio device includes the sound-generating device as described above. Since the audio device employs all the technical solutions of all embodiments of the sound-generating device described above, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0057] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A tuning stand, characterized in that, A ring plate portion is formed on the tuning bracket, and an airflow channel is formed inside the ring plate portion. A first airflow port and a second airflow port communicating with the airflow channel are respectively provided at both ends of the ring plate portion in the thickness direction. In the projection along the thickness direction of the ring plate portion, the first airflow port and the second airflow port are staggered.

2. The tuning stand as described in claim 1, characterized in that, In the projection along the thickness direction of the annular plate portion, the first airflow port and the second airflow port are staggered along the circumference of the annular plate portion.

3. The tuning stand as described in claim 2, characterized in that, The airflow channel has two inner walls distributed radially along the annular plate portion, and at least one of the inner walls is curved and extended.

4. The sound stand as described in claim 3, characterized in that, The inner wall of the channel has a first curved section and a second curved section that are smoothly connected to each other. The center of curvature of the first curved section is located on the inner side of the inner wall of the channel, and the center of curvature of the second curved section is located on the outer side of the inner wall of the channel.

5. The tuning stand as described in claim 4, characterized in that, The annular plate portion has a first side end and a second side end in its thickness direction; The tuning bracket includes an inner sleeve portion disposed on the inner side of the ring plate portion and an outer sleeve portion disposed on the outer side of the ring plate portion. The inner sleeve portion protrudes from the first side end, and the outer sleeve portion protrudes from the second side end. The second airflow port is located at the second side end and is configured corresponding to the first curved section, and the first airflow port is located at the first side end and is configured corresponding to the second curved section.

6. The tuning stand as described in claim 1, characterized in that, The annular plate portion has a first side end and a second side end in its thickness direction; The tuning bracket includes an inner sleeve portion disposed on the inner side of the ring plate portion and an outer sleeve portion disposed on the outer side of the ring plate portion. The inner sleeve portion protrudes from the first side end, and the outer sleeve portion protrudes from the second side end. The second airflow port is disposed on the second side end, and the first airflow port is disposed on the first side end. The size of the air passage area of ​​the second air inlet is adjustable.

7. The tuning stand as described in claim 6, characterized in that, The first airflow port is disposed through the first side end and the second side end of the annular plate portion, and a recessed groove is provided at the second side end, wherein the side wall of the recessed groove is connected to the first airflow port; A shielding part is provided on the second side end. The shielding part always covers the first airflow port. The shielding part covers part of the groove opening of the recessed groove so that the remaining part of the groove opening is exposed to form the second airflow port. The position of the shielding part on the second side end is adjustable to adjust the size of the second airflow port.

8. The tuning stand as described in claim 7, characterized in that, A mounting groove is provided on the second side end, the first airflow port and the recessed groove are both provided corresponding to the mounting groove, and the shielding part is provided within the mounting groove; and / or The shielding part is attached to the ring plate part.

9. A sound-generating device, characterized in that, Includes the tuning stand as described in any one of claims 1 to 8.

10. An audio device, characterized in that, Includes the sound-generating device as described in claim 9.

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