Audio vibration transducer and audio massage device

Abstract

The application discloses an audio vibration transducer and an audio massage device. The audio vibration transducer comprises a fixed component, a vibrating component capable of vibrating relative to the fixed component, and an elastic support connected between the fixed component and the vibrating component. The fixed component is attached with a damping mechanism on the other side relative to the elastic support. The damping mechanism comprises a flat spring with a central mounting portion and a plurality of elastic arms extending outward from the mounting portion, and the outer end of each elastic arm is fixed on the fixed component; and a damping mass fixedly connected to the mounting portion of the flat spring. The flat spring and the damping mass jointly constitute a tuned mass damper system. The natural frequency of the system is preset to match the working frequency of the vibrating component under the driving of an audio electric signal, so that when the transducer operates, the damping mass and the fixed component produce opposite phase relative motion. The application can improve the purity of vibration output and reduce noise.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic transducer technology, and specifically to an audio vibration transducer and an audio massage device. Background Technology

[0002] Vibration and noise control is a key technology for enhancing the user experience of electronic devices, especially in modern consumer electronics that integrate haptic feedback or audio-synchronized vibration, such as smartphones, game controllers, virtual reality (VR) devices, wearable devices, and high-end personal care massage appliances. In these devices, linear resonant actuators (LRAs) or audio vibration transducers are widely used to convert electrical signals (especially low-frequency audio signals) into precise mechanical vibrations, thereby providing users with auditory, haptic feedback or enhancing the immersive experience of media.

[0003] Currently, the mainstream technologies for haptic feedback mainly rely on two principles: one is the electromagnetically driven linear resonant actuator, which operates near the resonant frequency through a spring-mass system; the other is the piezoelectric actuator based on piezoelectric ceramics, which generates vibration through the deformation of piezoelectric materials. However, both of these solutions have certain limitations. For electromagnetically driven vibrators, in addition to being transmitted along the designed direction, the vibration energy during operation inevitably transmits broadband parasitic vibrations to the device casing through its fixed structure. These unintended vibrations not only generate unpleasant electromagnetic noise and structurally conducted noise, affecting the auditory experience of the device, but their complex vibration modes also lead to distorted haptic feedback signals and slow response, making the feedback unclear and severely reducing the accuracy of haptic interaction and user experience. Especially with the trend of miniaturization and thinning of devices, the structural space is becoming increasingly compact, making it easier for vibration energy to cause resonance in the casing, further amplifying the above problems.

[0004] To suppress these undesirable vibrations, common technical means in this field are mainly divided into two categories: one is to set a simple elastic pad (such as silicone or rubber vibration isolation ring) between the vibration actuator and the equipment housing, and use the damping characteristics of the elastic material to passively absorb and isolate vibration energy; the other is to optimize the magnetic circuit and drive circuit inside the actuator in an attempt to reduce the non-axial vibration component from the vibration source.

[0005] However, these traditional methods all have significant shortcomings. While the first method, passive vibration isolation, is simple in structure and low in cost, its effect on suppressing vibrations at specific frequencies (especially the actuator's fundamental operating frequency) is limited, making it difficult to achieve "targeted" elimination. Furthermore, the elastic materials suffer from aging and fatigue after long-term use, leading to a decline in damping performance and affecting long-term reliability. The second method places extremely high demands on the design and manufacturing process of the actuator, significantly increasing costs, and for already finalized products, the room for improvement and its effectiveness are very limited.

[0006] Therefore, there is an urgent need in this field for a compact, efficient and easy-to-implement vibration reduction solution that can be adapted as a general module to different types of audio vibration transducers. Without significantly altering the transducer's structure, it can dynamically and selectively absorb vibration energy at specific operating frequencies, thereby significantly improving the purity of tactile feedback, reducing vibration and noise transmitted to the device casing, and ultimately achieving a high-quality user tactile and auditory experience. Summary of the Invention

[0007] The present invention aims to provide an audio vibration transducer and an audio massage device, which can improve the vibration suppression effect of the main body and enhance the structural stability and adaptability.

[0008] To achieve the above objectives, in a first aspect, the present invention provides an audio vibration transducer, comprising a fixed assembly, a vibration assembly capable of vibrating relative to the fixed assembly, and an elastic support member connected between the two; a damping mechanism is attached to the fixed assembly on the other side relative to the elastic support member, the damping mechanism comprising:

[0009] A planar leaf spring having a central mounting portion and a plurality of elastic arms extending outward from the mounting portion, the outer ends of each elastic arm being fixed to a fixing assembly; and

[0010] A damping mass block, which is fixedly connected to the mounting part of the planar leaf spring;

[0011] The planar leaf spring and the damping mass block together constitute a tuned mass damper system. The natural frequency of this system is preset to match the operating frequency of the vibrating component under the drive of the audio electrical signal. This allows the damping mass block and the fixed component to generate an anti-phase relative motion when the transducer is running, thereby dynamically absorbing and canceling the mechanical vibration energy transmitted from the vibrating component to the fixed component, thus improving the purity of the vibration output and reducing noise.

[0012] By adopting the above technical solution, a highly efficient "targeted" vibration reduction system was constructed. This system, through precise frequency tuning, causes the damping mass block to move in the opposite phase to the main vibration, dynamically canceling the energy at its source rather than simply passively absorbing it. This achieves significant suppression of vibration and noise at specific operating frequencies, with noise reduction effects superior to traditional vibration isolation materials.

[0013] Traditional methods struggle to suppress specific frequencies (such as high-frequency harmonics or structural resonant frequencies) that cause noise and tactile distortion without affecting the main vibration signal. The tuned mass damper (TMD) of this invention exhibits significant frequency selectivity. Due to its high Q-factor, it primarily responds strongly to and cancels vibrational energy within a narrow frequency band centered on its natural frequency, while having minimal impact on other vibrational components outside this band. This proactive management and optimization of the vibrational energy path significantly reduces the vibrational energy transmitted to the housing, thereby reducing noise and indirectly improving the energy utilization efficiency for generating effective tactile feedback. This allows the device to produce a stronger and purer tactile sensation with the same power consumption. A TMD system with rationally designed damping parameters can not only cancel steady-state vibrations but also rapidly dissipate transient vibrational energy. When the drive signal stops, the TMD effectively suppresses residual vibrations in both stationary and vibrating components, allowing the system to return to a stationary state more quickly.

[0014] In some embodiments, the vibrating component includes a voice coil, the fixing component includes a permanent magnet, and the voice coil is driven by an audio electrical signal to reciprocate in the magnetic field generated by the permanent magnet.

[0015] By adopting the above technical solution, the moving-coil drive is a mature and efficient method for converting electrical signals into mechanical vibrations. Its vibration frequency can strictly follow the changes in audio electrical signals, with rapid response and good linearity. This makes the operating frequency of the vibration component clear and controllable, providing a precise and stable target for the natural frequency preset of the connected tuned mass damper system. The two achieve precise frequency matching, ensuring that the damping mass can generate the most effective anti-phase motion, thereby maximizing the absorption and cancellation efficiency of vibration energy at its source.

[0016] In some embodiments, the elastic arm extends radially outward from the mounting portion.

[0017] By adopting the above technical solution, the radially extended elastic arm structure provides symmetrical and uniform radial stiffness, ensuring that the damping mass can perform stable and pure reciprocating motion along the vibration component line, avoiding unnecessary lateral coupling vibration, and thus more accurately and efficiently offsetting the axial main vibration energy.

[0018] In some embodiments, the elastic arm extends outward from the mounting portion along a spiral line.

[0019] By adopting the above technical solution, the spirally extended elastic arm can achieve a longer effective deformation length in a limited planar space, thereby significantly reducing the overall stiffness of the system. This allows the tuned mass damper to be designed to counteract vibrations at lower frequencies, broadening its application range. At the same time, the spiral structure itself can dissipate energy more effectively during deformation.

[0020] In some embodiments, the planar leaf spring includes at least three elastic arms that are angularly spaced in the circumferential direction.

[0021] By adopting the above technical solution, the symmetrical layout of three or more elastic arms at equal angles provides the planar leaf spring with extremely high lateral and torsional stability. It can effectively constrain the damping mass block and prevent it from tilting or swaying during vibration, ensuring that the reaction force is always accurately aligned with the main vibration force, thereby improving the reliability and consistency of the damping system.

[0022] In some embodiments, the elastic arm and the mounting part are integrally formed or separately assembled.

[0023] By adopting the above technical solutions, the one-piece molding structure (such as stamping) ensures the consistency of stiffness and performance among the components of the planar leaf spring, with no connection loss, high vibration transmission efficiency, and optimal performance; while the split assembly structure provides flexibility in material combination and convenience for partial replacement after damage, adapting to the needs of small-batch customization or repair scenarios.

[0024] In some embodiments, the end of the elastic arm away from the mounting portion is provided with a mounting hole, and the planar leaf spring is connected to the main body by a fastener passing through the mounting hole.

[0025] By adopting the above technical solution, the mating of the mounting holes and fasteners provides a robust, reliable, and easy-to-assemble connection. It ensures that vibration energy is efficiently transferred from the fixed component to the elastic arm, while simplifying the production and assembly process and facilitating independent disassembly and replacement of the damping mechanism during maintenance.

[0026] In some embodiments, a mounting base is also included, through which the planar leaf spring is connected to the main body.

[0027] By adopting the above technical solution, the fixed base serves as an independent connection medium, standardizing the connection interface between the shock absorption mechanism and the main body. This allows the technical solution to be flexibly adapted to various main body models with different structural sizes, greatly enhancing the versatility and portability of the shock absorption solution and reducing application costs.

[0028] In some embodiments, the mounting base includes a groove for receiving at least a portion of the body and a mounting post for connection with the planar leaf spring.

[0029] By adopting the above technical solutions, the groove structure achieves precise positioning and wrapping of the main body, improving the coaxiality and assembly stability of the overall structure; the fixed column provides a clear and solid mounting point for the planar leaf spring, together ensuring the accuracy of the relative position between the shock absorption system and the main body, which is the basis for ensuring the accurate realization of the tuning frequency.

[0030] In some embodiments, the damping mass includes a base and a boss disposed on the base, the boss being fixedly connected to the mounting portion; the radial dimension of the boss is smaller than the radial dimension of the base, such that an annular isolation gap is formed between the boss and all the elastic arms, so that the vibration of the elastic arms is not interfered with by the damping mass.

[0031] By adopting the above technical solution, the annular isolation gap physically separates the motion space of the damping mass block from the deformation space of the elastic arm, fundamentally eliminating the collision and motion interference that may occur between the two under large amplitudes. This ensures the purity of the vibration mode of the elastic arm and the independent and efficient inertial action of the damping mass block, thereby guaranteeing that the entire system can achieve the best vibration reduction performance and long-term operational reliability at the design target frequency.

[0032] Secondly, the present invention also relates to an audio massage device, comprising the low-noise audio vibration transducer described in the first aspect.

[0033] By adopting the above technical solution, the vibration of the main body in the audio massage device directly affects the user comfort and noise level. This vibration damping structure can significantly reduce the energy transmitted to the massage components, thereby reducing noise and discomfort. Creatively, the application of efficient main body vibration damping technology to the audio massage device specifically improves the user experience and solves the problems of poor comfort and high noise levels caused by main body vibration in traditional massage devices.

[0034] In summary, this application has at least one of the following beneficial technical effects:

[0035] 1. Targeted noise reduction and vibration reduction: By constructing a frequency-tuned system, it can actively and dynamically cancel the specific frequency vibrations of the main body during operation, significantly reducing noise and vibration energy transmitted to the shell from the source, with an effect far exceeding that of passive vibration isolation.

[0036] 2. Improved product performance and experience: For products such as massage devices, it directly improves user comfort and quietness.

[0037] 3. Enhanced structural reliability and lifespan: By effectively suppressing resonance, the mechanical stress transmitted to the main stator and product casing is significantly reduced, thereby reducing the risks of material fatigue, screw loosening, etc., and improving the mechanical durability and service life of the main body and the whole machine.

[0038] 4. It provides a high degree of design flexibility and adaptability: the elastic arm configuration, number, and connection method of the planar leaf spring can be flexibly designed, making the technology widely adaptable to miniature main bodies with different models, power, and frequency requirements. The overall structure is compact, which is conducive to its application in space-constrained electronic products.

[0039] 5. Ensures the purity and stability of the vibration damping system: By optimizing the structure (such as annular isolation gap and symmetrical elastic arm layout), motion interference between components and unintended vibration modes are effectively avoided, ensuring that the system can work stably and efficiently at the preset target frequency for a long time. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of the low-noise audio vibration transducer body of this application;

[0042] Figure 2 This is a cross-sectional structural diagram of the main body of the low-noise audio vibration transducer of this application;

[0043] Figure 3 This is a schematic diagram of the structure of the low-noise audio vibration transducer without damped mass block according to this application;

[0044] Figure 4 This is a schematic cross-sectional view of the low-noise audio vibration transducer of this application without a damped mass block.

[0045] Figure 5 This is a schematic diagram of a planar leaf spring.

[0046] Figure 6 This is a schematic diagram of the structure of the fixing base in this application;

[0047] Figure 7 This is a schematic diagram of the structure of the low-noise audio vibration transducer of this application;

[0048] Figure 8 This is an exploded structural diagram of the low-noise audio vibration transducer of this application;

[0049] Figure 9 This is a cross-sectional structural diagram of the low-noise audio vibration transducer of this application.

[0050] Figure label:

[0051] 1. Main body; 11. Vibration component; 12. Fixing component; 13. Elastic support component; 2. Planar leaf spring; 21. Elastic arm; 211. First end; 2111. Mounting hole; 212. Second end; 22. Mounting part; 221. Fixing hole; 222. Through hole; 3. Fixing base; 31. Groove; 32. Fixing column; 4. Damping mass block; 41. Boss; 42. Base; 5. Massage head. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] The technical solutions of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0056] Example 1

[0057] Please see Figures 1-9This embodiment provides an audio vibration transducer suitable for massage device motors with high vibration suppression requirements. The low-noise audio vibration transducer mainly includes a main body 1 and a damping mechanism fixedly connected to the main body 1. The main body 1 includes a fixing component 12, a vibration component 11, and an elastic support 13 connecting the fixing component 12 and the vibration component 11. The damping mechanism includes a planar leaf spring 2, a fixing seat 3, and a damping mass block 4. The planar leaf spring 2 is connected to the fixing component 12 via the fixing seat 3, and the damping mass block 4 is fixedly connected to the planar leaf spring 2. The planar leaf spring 2 and the damping mass block 4 together constitute a tuned mass damper system; the natural frequency of this system is preset to match the operating frequency of the vibration component 11 under audio electrical signal drive, so that when the transducer is running, the damping mass block 4 and the fixing component 12 generate an anti-phase relative motion, thereby dynamically absorbing and canceling the mechanical vibration energy transmitted from the vibration component 11 to the fixing component 12, thereby improving the purity of the vibration output and reducing noise.

[0058] The vibration component 11 includes a voice coil, and the fixing component 12 includes a permanent magnet. The voice coil reciprocates under the influence of an audio electrical signal in the magnetic field generated by the permanent magnet. This moving-coil drive structure offers the following technical advantages: First, the voice coil is driven by the Lorentz force in the uniform magnetic field of the permanent magnet, resulting in excellent linearity between its vibration and the input audio electrical signal, with low distortion. This characteristic, combined with the strong suppression of unexpected structural vibrations by the tuned mass damper, ensures that the vibration ultimately transmitted to the transducer housing or massage head is almost entirely determined by a pure audio signal, effectively avoiding signal contamination caused by motor vibration noise or resonance, thereby significantly improving the purity, clarity, and realism of the audio vibration output and tactile feedback. Second, the moving-coil structure is simple in principle, technologically mature, and easily miniaturized and mass-produced. Using it as the core drive mechanism ensures the stability and durability of the basic drive. Meanwhile, this standardized driving method and the shock absorption mechanism of the present invention are easy to integrate in terms of physical space and energy transmission path. The two work together without interfering with each other, and instead jointly improve the overall acoustic and mechanical performance of the transducer in a wide frequency band, making it more reliable for use in high-end massage devices, high-fidelity haptic feedback devices and immersive audio experience products with stringent requirements for noise and vibration quality.

[0059] Please see Figures 3-7The planar leaf spring 2, as the core damping component, has a central mounting portion 22 and multiple elastic arms 21 extending outward from the mounting portion. The outer end of each elastic arm 21 is fixed to the fixed base 3. The elastic arm 21 has a first end 211 and a second end 212 arranged opposite to each other. The first end 211 is used to fix it to the fixed base 3, and the second end 212 is connected to the mounting portion 22. The planar leaf spring 2 and the damping mass block 4 together constitute a tuned mass damper system. The natural frequency of this system is preset to match the vibration frequency of the vibration component 11 when it is working, so that when the main body is running, the damping mass block 4 and the fixed component 12 generate an anti-phase relative motion, thereby dynamically absorbing and canceling the mechanical vibration energy transmitted from the vibration component 11 to the fixed component 12.

[0060] Please see Figure 4 and Figure 5 In this embodiment, the planar leaf spring 2 includes four elastic arms 21 and a mounting portion 22. The four elastic arms 21 are evenly distributed around the circumference of the vibration assembly 11. The shape and structure of the elastic arms 21 can extend radially outward from the mounting portion 22; in this embodiment, a structure in which the mounting portion 22 extends outward along a spiral line is adopted. The planar leaf spring 2 can be made of spring steel, which has good elastic deformation capability, or it can be made of engineering plastic. In this embodiment, the elastic arms 21 and the mounting portion 22 adopt an integral molding structure, which is manufactured by stamping or injection molding. This integral molding structure eliminates the connection gap between the elastic arms 21 and the mounting portion 22, improves the overall structural strength and deformation consistency, and ensures the stability of the damping performance during long-term vibration.

[0061] A mounting hole 2111 is provided at the end of the elastic arm 21 away from the mounting part 22. The mounting hole 2111 can be a through hole 222 or it can be provided with an internal thread for fixing to the fixed seat 3 by bolts.

[0062] In addition to bolt connection, an auxiliary positioning structure can be added to the connection between the planar leaf spring 2 and the fixed base 3. A positioning protrusion is provided at the first end 211 of the elastic arm 21, and a corresponding positioning groove is provided on the fixed base 3. After the elastic arm 21 and the fixed base 3 are initially fixed by bolts, the positioning protrusion is embedded in the positioning groove, forming a double fixation. This positioning structure not only increases the stability of the connection and prevents loosening during vibration, but also distributes the tensile force borne by the bolts to a certain extent, extending the service life of the bolts. At the same time, the design of the positioning structure also facilitates positioning during installation and disassembly, improving assembly efficiency.

[0063] In terms of overall structural design, to further improve the adaptability of the damping mechanism to vibrations of different frequencies, the layout and structure of the elastic arm 21 of the planar leaf spring 2 can be optimized. In addition to considering the matching of the vibration frequency with the vibration component 11, the design also addresses potentially complex vibration scenarios. For example, the width of the elastic arm 21 is not uniform but varies according to the stress distribution it experiences during vibration. In the area near the mounting part 22, where the stress is relatively low, the width of the elastic arm 21 can be appropriately reduced to lower material costs and reduce overall weight; while in the area near the outer end connected to the fixing seat 3, where the stress is higher, the width of the elastic arm 21 is correspondingly increased to enhance its structural strength and prevent breakage or other damage during long-term vibration. This variable width design allows the planar leaf spring 2 to more evenly distribute stress when dealing with vibrations of different frequencies and amplitudes, improving its service life and damping effect.

[0064] Please see Figures 4-6 The fixing base 3 includes a groove 31 for accommodating a portion of the main body and a fixing post 32 for connecting with the planar leaf spring 2. The shape of the groove 31 matches the outer contour of the fixing component 12. The fixing component 12 is at least partially embedded in the groove 31. The fixing component 12 is fixed to the fixing base 3 by bolts, thereby achieving stable installation of the fixing component 12. The fixing post 32 is integrally formed with the fixing base 3. The fixing post 32 is provided with an internal threaded hole that matches the mounting hole 2111 of the elastic arm 21. The elastic arm 21 is connected to the threaded hole of the fixing post 32 through the mounting hole 2111, thereby fixing the planar leaf spring 2 to the fixing base 3.

[0065] To further improve the connection stability between the fixed base 3 and the fixed component 12, a rubber pad is provided on the inner surface of the groove 31. The rubber pad has good elasticity and cushioning properties, providing buffering and shock absorption between the fixed component 12 and the fixed base 3. When the motor is running, when vibration energy is transmitted to the fixed base 3, the rubber pad can absorb some of the vibration energy, reducing the impact of vibration on the connection between the fixed base 3 and the fixed component 12, and preventing loosening of the connection. Simultaneously, the rubber pad can fill the tiny gaps between the fixed component 12 and the groove 31, making the connection tighter and improving the overall structural stability. Furthermore, the rubber pad also provides anti-slip properties, preventing the fixed component 12 from sliding relative to the fixed component 12 within the groove 31, ensuring the stability of the motor operation.

[0066] By setting planar leaf springs 2 and elastic support members 13 on both sides of the main body 1, the axial damping effect and balance of the motor are improved.

[0067] Please see Figures 7-9The vibration assembly 11 has a massage head 5 threadedly connected to its shaft end. A damping mass block 4 is fixedly connected to a flat leaf spring 2 at the end away from the massage head 5. The damping mass block 4 is made of high-density cast iron and has a large mass, which can effectively resist rapid displacement changes caused by vibration through inertia. The damping mass block 4 includes a base 42 and a boss 41. The base 42 is disc-shaped, which increases the contact area between the damping mass block 4 and other components, improving overall stability. The boss 41 is located at the center of the base 42 and is fixedly connected to the mounting part 22 by bolts. The diameter of the boss 41 is not larger than the diameter of the mounting part 22. During assembly, this ensures that the boss 41 does not contact the elastic arm 21, thus preventing the damping mass block 4 from rubbing or colliding with the elastic arm 21 during vibration, ensuring that the elastic arm 21 can deform freely and fully exert its elastic damping effect.

[0068] At the connection between the damping mass 4 and the mounting portion 22 of the planar leaf spring 2, a damping pad can be added. The damping pad is made of a material with good elasticity and damping properties, such as silicone or rubber. The function of the damping pad is to provide a buffer layer between the damping mass 4 and the mounting portion 22. When vibration energy is transmitted to the connection point, the damping pad can absorb and disperse some of the vibration energy, reducing the impact of vibration on the connection and preventing loosening or damage. Simultaneously, the damping pad can also adjust the relative positional relationship between the damping mass 4 and the mounting portion 22, ensuring a more precise and stable connection. Furthermore, the damping pad also serves as sound insulation, reducing the transmission of noise generated by vibration and further improving the low-noise performance of the motor.

[0069] When the main body 1 vibrates during operation, the vibration energy is transmitted to the elastic arm 21 of the planar leaf spring 2 through the fixed seat 3. The elastic arm 21 undergoes elastic deformation along the axial direction of the vibration component 11, converting part of the vibration energy into elastic potential energy. At the same time, the damping mass 4, due to its own inertia, is not easily changed in its motion state and can hinder the rapid displacement caused by vibration. Together with the elastic deformation of the elastic arm 21, it forms a dual energy absorption mechanism of "elastic deformation + inertial action," effectively absorbing the vibration energy generated by the main body 1 during operation, thereby suppressing the vibration of the main body 1. The four circumferentially distributed elastic arms 21 can provide all-round support for the main body 1. No matter which radial direction the main body 1 vibrates, the corresponding elastic arm 21 can deform synchronously to absorb energy, achieving 360° vibration suppression without dead angles.

[0070] The low-noise audio vibration transducer of the present invention achieves efficient suppression of motor vibration through reasonable structural design, and has the advantages of good shock absorption, stable structure and strong adaptability. When applied to massage devices, it can effectively improve the quality of massage devices and user experience.

[0071] Example 2

[0072] Based on the above figures, this embodiment provides another audio vibration transducer. The main difference from the first embodiment lies in the connection method between the elastic arm 21 and the mounting part 22, as well as the structural details of the fixing seat 3. It is also applicable to massage devices.

[0073] The planar leaf spring 2 includes three elastic arms 21 and a mounting portion 22. The three elastic arms 21 are evenly distributed around the circumference of the vibration assembly 11. The elastic arms 21 are made of polyurethane elastic material, which has excellent elasticity and wear resistance. Unlike Embodiment 1, in this embodiment, the elastic arms 21 and the mounting portion 22 adopt a separate assembly structure. The mounting portion 22 has three evenly distributed mounting grooves (not shown in the figure). One end of the elastic arm 21 is inserted into the mounting groove by interference fit and further fixed by glue or hot melt process. The advantage of this separate assembly structure is that when it is necessary to adjust the damping effect according to different vibration conditions of the main body 1, the elastic arms 21 with different elastic coefficients can be easily replaced, flexibly adapting to different working conditions.

[0074] When the main body 1 vibrates during operation, the vibration energy is sequentially transmitted to the elastic arm 21 through the fixed seat 3. The elastic arm 21 then undergoes elastic deformation to absorb the vibration energy. The three circumferentially distributed elastic arms 21 can evenly distribute the vibration force, effectively suppressing vibrations in all directions. Since the elastic arm 21 and the mounting part 22 adopt a separate assembly structure, if the damping effect is found to be unsatisfactory during use, the elastic arm 21 with different elastic parameters can be easily replaced without replacing the entire planar leaf spring 2, reducing maintenance costs. At the same time, the deep groove 31 of the fixed seat 3 and the reliable pin connection ensure the stability of the connection between the main body 1 and the planar leaf spring 2, reducing the problem of loosening during vibration.

[0075] Regarding the connection between the elastic arm 21 and the mounting part 22, in addition to a separate assembly structure, an adjustable connection method can also be adopted. Multiple mounting holes with different angles and positions are provided on the mounting part 22, and one end of the elastic arm 21 can be connected to different mounting holes according to actual needs. This adjustable connection method allows the planar leaf spring 2 to flexibly adjust the mounting angle and position of the elastic arm 21 according to different vibration frequencies and directions, thereby optimizing the vibration damping effect. For example, when a large vibration occurs in a specific direction during motor operation, the elastic arm 21 can be adjusted to an angle that better matches the vibration direction, enhancing its absorption capacity for vibration in that direction. Simultaneously, this adjustable connection method also facilitates quick adjustments during maintenance and replacement of the elastic arm 21, improving maintenance efficiency.

[0076] Example 3

[0077] This embodiment discloses a massage device, particularly an audio massage device, which includes the low-noise audio vibration transducer described in any of the above embodiments. Since the motor is the power source of the massage device, its vibration directly affects the user experience. Applying the aforementioned low-noise audio vibration transducer to the massage device significantly reduces the energy transmitted from the motor vibration to the massage components, reduces noise during operation, improves user comfort, and provides a reliable guarantee for the stable operation of the massage device.

[0078] In the overall design of the massage device, the structure of the massage head can be optimized to further enhance the user experience. For example, the massage head can be made of soft and elastic silicone material, with multiple bumps and textures of different shapes and sizes on its surface. These bumps and textures not only increase the contact area between the massage head and the skin but also simulate different hand massage techniques, such as kneading and pushing, providing a richer and more realistic massage experience. At the same time, the softness of the silicone material allows it to better adapt to the curves of the human body, making the massage more fitting and comfortable. Furthermore, the massage head can be replaced according to different massage needs; for example, it can be replaced with a massage head with a heating function to provide a heat therapy effect while massaging, further promoting blood circulation and relieving muscle fatigue.

[0079] The sonic massager in this embodiment uses a low-noise audio vibration transducer specifically optimized for high-frequency vibration characteristics. Through coordinated improvements in material selection, structural design, and assembly processes, it achieves efficient suppression of high-frequency radial vibration, thereby enhancing the operational stability, user comfort, and service life of the sonic massager and providing reliable structural support for the technological upgrade of sonic massage equipment.

[0080] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An audio vibration transducer, comprising a fixed assembly, a vibrating assembly oscillating relative to the fixed assembly, and an elastic support member connected between the two; characterized in that, A shock-absorbing mechanism is attached to the fixed component on the opposite side relative to the elastic support member, the shock-absorbing mechanism comprising: A planar leaf spring has a central mounting portion and at least three elastic arms extending outward from the mounting portion. The outer ends of each elastic arm are fixed to a fixing assembly. The at least three elastic arms are evenly spaced in the circumferential direction. The elastic arms extend outward from the mounting portion along a spiral line to more effectively dissipate energy during deformation. Multiple mounting holes with different angles and positions are provided on the mounting portion. The elastic arms are connected to different mounting holes according to actual needs, allowing the planar leaf spring to adjust the mounting angle and position of the elastic arms according to different vibration frequencies and directions, thereby optimizing the damping effect. A damping mass block, which is fixedly connected to the mounting part of the planar leaf spring; The planar leaf spring and the damping mass block together constitute a tuned mass damper system. The natural frequency of this system is preset to match the operating frequency of the vibrating component under the drive of the audio electrical signal. This allows the damping mass block and the fixed component to generate an anti-phase relative motion when the transducer is running, thereby dynamically absorbing and canceling the mechanical vibration energy transmitted from the vibrating component to the fixed component, thus improving the purity of the vibration output and reducing noise.

2. The audio vibration transducer according to claim 1, characterized in that, The vibrating component includes a voice coil, and the fixing component includes a permanent magnet. The voice coil is driven by an audio electrical signal in the magnetic field generated by the permanent magnet to produce reciprocating motion.

3. The audio vibration transducer according to claim 1, characterized in that, The elastic arm and the mounting part are either integrally formed or separately assembled.

4. The audio vibration transducer according to claim 1, characterized in that, The elastic arm has a mounting hole at one end away from the mounting part, and the planar leaf spring is connected to the main body through a fastener passing through the mounting hole.

5. The audio vibration transducer according to any one of claims 1 to 4, characterized in that, It also includes a fixing seat, through which the planar leaf spring is connected to the main body.

6. The audio vibration transducer according to claim 5, characterized in that, The mounting base includes a groove for accommodating at least a portion of the main body, and a mounting post for connection with the planar leaf spring.

7. The audio vibration transducer according to claim 1, characterized in that, The damping mass includes a base and a boss on the base, the boss being fixedly connected to the mounting part; the radial dimension of the boss is smaller than the radial dimension of the base, so that an annular isolation gap is formed between the boss and all the elastic arms, so that the vibration of the elastic arms is not interfered with by the damping mass.

8. An audio massage device, characterized in that, Includes an audio vibration transducer as described in any one of claims 1 to 7.

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