Deep waterproof loudspeaker with self-venting structure

Abstract

The application discloses a deep waterproof loudspeaker with a self-venting structure, which comprises a magnetic power system, a vibration system and a supporting system. The vibration system comprises a diaphragm and a ball top connected to the diaphragm, and a balance hole is formed in the ball top. The magnetic power system comprises a magnetic guide pole piece located below the ball top, and an air guide channel is formed on the upper surface of the magnetic guide pole piece, at least one end of the air guide channel extending to the edge of the magnetic guide pole piece. The air guide channel is substantially coincident with the balance hole in the vertical direction. The deep waterproof loudspeaker with the self-venting structure can help to solve the problem of airflow exchange when the diaphragm moves, ensure the balance of internal and external air pressure, prolong the service life of the loudspeaker and make the loudspeaker work stably and continuously.

Description

Technical Field

[0001] This application relates to the field of loudspeaker technology, and more specifically to a deep waterproof loudspeaker with a self-venting structure. Background Technology

[0002] With the widespread use of wearable devices, speaker technology faces new challenges. Besides requiring good basic electrical parameters, the speaker's waterproof performance has become crucial. The current core challenge lies in how to ensure airflow while maintaining waterproof performance, ensuring pressure balance between the internal and external airflow of the speaker, and thus balancing acoustic performance with waterproof reliability.

[0003] Ensuring airflow exchange during speaker diaphragm movement and achieving internal and external air pressure balance is fundamental to the efficient and low-distortion operation of a speaker. A common practice is to add vents to the electronic terminal structure or speaker cavity to balance the pressure difference between the inside and outside of the diaphragm. However, these vents are usually located on the product's exterior, which is aesthetically unappealing. Furthermore, over long-term use, dust and other contaminants can easily clog these vents, preventing proper airflow exchange and causing speaker performance degradation or even damage. In extreme cases (such as with ultra-high power ultra-low frequency signals), the air pressure within the sealed space may become excessively high or low, causing excessive diaphragm displacement, damaging the suspension or voice coil, and resulting in speaker malfunction.

[0004] In some special usage scenarios, when the speaker is working continuously, the heat generated will cause the air inside the speaker to expand. If the hot and high-pressure air cannot be expelled, it will easily damage the speaker product.

[0005] In some special application scenarios, such as waterproof electronic watches, the speaker may be subjected to water pressure underwater. This water pressure may cause the speaker's dome to adhere to the upper surface of the magnetic pole piece, and even after leaving the underwater environment, the dome may not be able to return to its original position. In this case, the leakage hole on the dome may be blocked by the magnetic pole piece, preventing the venting function. This will result in excessively high internal air pressure when the speaker is operating, which can damage the diaphragm and cause the speaker to malfunction or lose performance.

[0006] In summary, existing waterproof speakers suffer from poor internal and external air pressure balance. Utility Model Content

[0007] This application provides a deep waterproof loudspeaker with a self-venting structure to improve the problem of poor air pressure balance inside and outside the loudspeaker.

[0008] This application discloses a deep waterproof loudspeaker with a self-venting structure, comprising a magnetic power system, a vibration system, and a support system. The vibration system includes a diaphragm and a dome connected to the diaphragm, with a balance hole formed on the dome. The magnetic power system includes a magnetic pole piece located below the dome, with an air channel formed on the upper surface of the magnetic pole piece, at least one end of which extends to the edge of the magnetic pole piece. The air channel substantially coincides with the balance hole in the vertical direction.

[0009] In some alternative embodiments, the air channel is a groove formed by a downward indentation on the upper surface of the magnetic pole piece.

[0010] In some alternative embodiments, the air channel has two ends, each extending to the edge of the magnetic pole piece.

[0011] In some alternative implementations, the air channels are multiple and parallel to each other.

[0012] In some alternative implementations, the width of the air guide channel is greater than the diameter of the balance hole.

[0013] In some alternative implementations, the plurality of the balancing holes are arranged in one or more straight lines.

[0014] In some alternative embodiments, the diaphragm has a diaphragm cutout at its center, the dome closes the diaphragm cutout, and a waterproof and breathable membrane is also attached to the dome.

[0015] In some alternative embodiments, the support system includes a bracket and a waterproof front cover, with the outer side of the diaphragm extending to form a diaphragm outer diameter fitting portion sandwiched between the bracket and the waterproof front cover.

[0016] In some alternative implementations, the waterproof front cover is provided with an opening that exposes the dome.

[0017] In some alternative embodiments, the magnetic power system further includes a magnetic bowl and a magnet disposed on the magnetic bowl, with the magnetic pole pieces disposed on the magnet.

[0018] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0019] This application's deeply waterproof speaker features a self-venting structure, which helps to achieve deep waterproofing while addressing the issue of airflow exchange during diaphragm movement, ensuring internal and external air pressure balance. Specifically, this application allows the high-temperature, high-pressure gas inside the speaker to self-vent, enabling air molecules to freely enter and exit the speaker, achieving self-balance of internal and external air pressure, and simultaneously enhancing the product's internal waterproofing effect. This extends the speaker's lifespan and allows it to operate stably and continuously.

[0020] In some special scenarios, even if the speaker dome is pressed against the upper surface of the magnetic pole piece due to water pressure, the leakage hole on the dome and the air channel on the magnetic pole piece form a self-venting structure. This self-venting structure can be used to communicate with the internal space of the diaphragm, realize the venting function, and ensure the speaker operates efficiently and with high performance.

[0021] The loudspeaker of this application can form a high airflow channel through an internal self-exhausting structure, which can reduce the obstruction of air pressure difference on the diaphragm, reduce distortion, allow for greater amplitude, and extend low-frequency extension.

[0022] The speaker in this application features a self-venting structure that is an intelligent solution to cope with changes in ambient air pressure / temperature and high-power low-frequency impacts. It can achieve slow air pressure balance through a high-resistance microchannel while minimizing audio signal leakage to maintain the speaker's acoustic performance.

[0023] The speaker of this application achieves the leakage pressure function required by the whole electronic device by integrating it into the speaker. This simplifies the design of the electronic device, improves the overall reliability, reduces the number of sensors in the whole device, provides better waterproof characteristics, and is more aesthetically pleasing and reliable. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments and the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a loudspeaker according to an embodiment of this application;

[0026] Figure 2 This is a partial cross-sectional view of a loudspeaker according to an embodiment of this application;

[0027] Figure 3 This is an exploded view of a loudspeaker according to an embodiment of this application;

[0028] Figure 4 yes Figure 1 The speaker shown is a schematic cross-sectional view along line AA in one embodiment.

[0029] Figure 5 Yes, yes Figure 4 A partially enlarged structural diagram of the speaker at point B;

[0030] Figure 6 yes Figure 1 The speaker shown is a schematic cross-sectional view along line AA in another embodiment.

[0031] Figure 7 yes Figure 1 The speaker shown is a schematic cross-sectional view along line AA in another embodiment.

[0032] Reference numerals: 10, diaphragm; 11, outer diameter fitting part of diaphragm; 12, cutout part of diaphragm; 20, dome; 21, balance hole; 22, dome fitting part; 30, voice coil; 31, voice coil connection part; 40, bracket; 41, annular fitting part of bracket; 50, magnetic pole piece; 60, main magnet; 61, auxiliary magnet; 70, magnetic cup; 80, waterproof and breathable membrane; 81, fitting area; 90, waterproof front cover; 91, annular fitting part of front cover; 100, air duct. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0034] The terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0035] The following detailed descriptions will be provided through specific embodiments.

[0036] refer to Figures 1 to 7 This application provides a deep waterproof loudspeaker (hereinafter referred to as loudspeaker) with a self-venting structure.

[0037] like Figures 1 to 7 As shown, the loudspeaker of this application includes a magnetic power system, a vibration system, and a support system. The magnetic power system is configured to provide driving force to drive the vibration system to vibrate like a piston. The vibration system is configured to perform piston-like motion under the action of the driving force, pushing air to produce sound, thus realizing the loudspeaker function. The magnetic power system and the vibration system are supported, fixed, and constrained by the support system.

[0038] In some alternative implementations, the support system includes a bracket 40 and a waterproof front cover 90.

[0039] In some alternative embodiments, the support 40 is generally an annular cavity with a hollow inner cavity for accommodating the magnetic power system and connecting the vibration system.

[0040] In some alternative embodiments, the bracket 40 has a bracket annular fitting portion 41 located on the outer side of its upper surface.

[0041] In some alternative embodiments, the waterproof front cover 90 is generally annular with an opening and an annular fitting portion 91 on its outer side, positioned corresponding to the annular fitting portion 41 of the bracket.

[0042] In some alternative embodiments, the bracket 40 may include conductive pads (not shown) integrally formed with the bracket 40 as terminals for external electrical connection.

[0043] In some alternative implementations, the vibration system includes the following components: diaphragm 10, dome 20, voice coil 30, and waterproof and breathable membrane 80.

[0044] In some alternative embodiments, the outer side of the diaphragm 10 extends outward to form a diaphragm outer diameter fitting portion 11, which is sandwiched between the bracket annular fitting portion 41 and the waterproof front cover 90. Specifically, the diaphragm outer diameter fitting portion 11 is attached to the bracket annular fitting portion 41 of the bracket 40, and the front cover annular fitting portion 91 of the waterproof front cover 90 is placed on it, thereby forming a sealed waterproof connection structure.

[0045] In some alternative embodiments, the diaphragm 10 is generally annular, with a suspension edge 13 formed on its inner side. The suspension edge 13 encloses and defines the diaphragm cutout 12. The suspension edge 13 and the diaphragm cutout 12 are located on the same plane, which may be referred to as the central plane.

[0046] In some optional embodiments, the area between the suspension edge 13 and the outer diameter fitting portion 11 of the diaphragm 10 is a vibrating portion, which functions to generate sound through vibration. Optionally, the vibrating portion may be a downwardly convex structure. Optionally, the vibrating portion may be provided with multiple reinforcing ribs. Optionally, the vibrating portion is covered and protected by a waterproof front cover 90.

[0047] In some alternative embodiments, the dome 20 is a sheet-like structure that adheres to the overhang 13, sealing the diaphragm cutout 12 to form a sealed, waterproof connection structure. Specifically, the dome 20 may include a dome-attaching portion 22 located at the outer edge, and adheres to the upper or lower surface of the overhang 13 through the dome-attaching portion 22. Furthermore, the dome 20 is exposed from the opening in the middle of the waterproof front cover 90.

[0048] In some alternative embodiments, a plurality of vertically penetrating balance holes 21 may be formed on the dome 20. The balance holes 21 are configured to facilitate airflow and exchange, ensuring air pressure balance inside and outside the diaphragm 10. Here, the plurality of balance holes 21 may be arranged in the same straight line, or in multiple straight lines, or in any shape.

[0049] In some alternative embodiments, the waterproof and breathable membrane 80 is affixed to the dome 20 (e.g., to the upper surface), covering the balance holes 21 while maintaining breathability of the balance holes 21 and achieving deep waterproofing. Optionally, the waterproof and breathable membrane 80 has an edge with an adhesion area 81 for bonding with the dome 20. The adhesion area 81 may be positioned around but avoid the balance holes 21.

[0050] In some alternative embodiments, the upper end of the voice coil 30 may be connected to the dome 20, and the lower end or side of the voice coil 30 may have a voice coil connector 31, which may be connected to the support 40. The voice coil connector 31 may be a flexible printed circuit board (FPC) or a wire, serving as an electrical conductor to transmit audio signals to the voice coil 30. Alternatively, the voice coil connector 31 may also be a spring, such as a U-shaped spring or other types of spring, serving as a spring / centering support to keep the voice coil 30 vibrating in the vertical direction.

[0051] Here, the vibration system can reciprocate up and down under the action of driving force, and the diaphragm 10 pushes the air in front of the speaker to produce air pressure changes and produce sound.

[0052] In some optional embodiments, the magnetic power system includes: a magnetic cup 70, a magnet attached to the center of the magnetic cup 70, and magnetically conductive pole pieces 50 (or magnetically conductive pole pieces) attached to the surface of the magnet. The magnet may include a main magnet 60 and may further include a secondary magnet 61. The main magnet 60 may be an elongated magnet disposed below the voice coil 30, and the secondary magnet 61 may also be an elongated magnet and may include two magnets disposed on either side of the main magnet 60. The magnetic field generated by the magnet can drive the energized voice coil 30 according to the left-hand rule, thereby causing the vibration system to perform piston-like motion.

[0053] In some alternative implementations, the magnetic power system and the support 40 are connected in a sealed, waterproof manner.

[0054] In some alternative embodiments, the magnetic pole piece 50 is located below the dome 20, and an air channel 100 is designed on the upper surface of the magnetic pole piece 50, corresponding to the direction of the lower surface of the dome 20. The air channel 100 can be a groove formed by a downward indentation of the upper surface of the magnetic pole piece 50. At least one end of the air channel 100 extends to the edge of the magnetic pole piece 50. The air channel 100 substantially coincides with the balance hole 21 opened on the dome 20 in the vertical direction; in other words, in the vertical direction, the projection of the balance hole 21 overlaps with the air channel 100.

[0055] Here, the air duct 100 and the balance hole 21 form a self-venting structure. In this way, even if the dome 20 is pressed against the upper surface of the magnetic pole piece 50, the balance hole 21 will not be closed by the magnetic pole piece 50. Instead, the air duct 100 will connect the balance hole 21 with the internal space of the speaker (or the internal space of the diaphragm 10), thereby realizing airflow conduction and airflow exchange, and ensuring the balance of air pressure inside and outside the diaphragm 10.

[0056] In some alternative embodiments, when the product is subjected to deep water pressure, the dome 20 adheres to the upper surface of the magnetic pole piece 50, causing a sharp reduction in the volume of the shock-absorbing pressure area on the front of the magnetic pole piece 50. This makes the speaker highly susceptible to damage under high temperature and pressure. This application utilizes a self-venting structure to rapidly expel high-temperature, high-pressure gas from the speaker, protecting it from damage.

[0057] In some optional embodiments, the air guide channel 100 is bidirectional or multidirectional, allowing the high-temperature, high-pressure gas to flow smoothly without leaving any gas storage area. The bidirectional or multidirectional flow can be understood as the air guide channel 100 extending to the edge of the magnetic pole piece 50 at both ends, communicating with the internal space of the speaker. This ensures the smooth flow of high-temperature / high-pressure gas inside the speaker, without leaving any gas storage area.

[0058] In some alternative embodiments, the air channels on the upper surface of the magnetic pole piece 50 can be of any shape and have multiple structures. For example, there can be one horizontally penetrating triangular air channel, or there can be two or more air channels of any shape.

[0059] In some alternative embodiments, the shape of the air guide channel 100 is the same as (or coincides with) the shape formed by the arrangement of the plurality of balance holes 21, so as to ensure that the air guide channel 100 is connected to the balance holes 21.

[0060] In some alternative embodiments, the air guide channel 100 is a straight groove, which may be one or more parallel to each other. Correspondingly, the balance holes may be arranged on one or more straight lines and correspond to one or more air guide channels in the vertical direction.

[0061] In some alternative implementations, the width of the air guide channel 100 is greater than the diameter of the balance hole 21.

[0062] In some alternative embodiments, the air channel 100 is configured in a specific shape to optimize the magnetic force guidance of the magnetic pole piece 50, providing better magnetic conductivity in conjunction with the magnet and the magnetic cup 70. For example, the air channel 100, formed by appropriate rolling and thinning or machining, can simultaneously optimize the magnetic force guidance in the magnetic pole piece 50, thereby providing the speaker with stronger magnetic force and enabling the speaker to output higher sound pressure levels.

[0063] In some alternative embodiments, the air passage 100 can be of any shape. For example, its longitudinal cross-section may include, but is not limited to, any shape such as triangle, square, semicircle, arc, ellipse, trapezoid, C-shape, etc.

[0064] In some optional embodiments, the magnetic pole piece 50 includes magnetic adhesive, and the upper surface of the magnetic pole piece 50 can be made into an arbitrary adhesive structure, such as C-angle, R-angle or other arbitrary shapes, especially forming C-angle, R-angle or other shapes at the edge corners of the magnetic pole piece 50, so as to better achieve the function of balancing air pressure in conjunction with the air channel 100.

[0065] In some alternative implementations, the magnetic pole piece 50 may include, but is not limited to, one or more, respectively disposed above multiple magnets.

[0066] In some optional embodiments, the loudspeaker of this application can be manufactured using any processing method such as metal rolling or machining. The loudspeaker of this application can be composed of any number of parts, and can be machined on the surface of a single part, or can be composed of an unlimited number of parts.

[0067] The technical solution of this application has been described in detail above through specific embodiments. In the above embodiments, the descriptions of each embodiment have their own emphasis, and for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0068] It should be understood that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and protection scope of the technical solutions of the embodiments of this application.

Claims

1. A deep waterproof loudspeaker with a self-venting structure, comprising a magnetic power system, a vibration system, and a support system, characterized in that, The vibration system includes a diaphragm and a dome connected to the diaphragm, and the dome has a balancing hole. The magnetic power system includes a magnetically conductive pole piece located below the dome, and an air-guiding channel is formed on the upper surface of the magnetically conductive pole piece, with at least one end of the air-guiding channel extending to the edge of the magnetically conductive pole piece. The air guide channel is substantially coincident with the balance hole in the vertical direction.

2. The deep waterproof loudspeaker with a self-venting structure according to claim 1, characterized in that, The air guiding channel is a groove formed by the downward indentation of the upper surface of the magnetic pole piece.

3. The deep waterproof loudspeaker with a self-venting structure according to claim 2, characterized in that, The air guide channel has two ends, which respectively extend to the edge of the magnetic pole piece.

4. The deep waterproof loudspeaker with a self-venting structure according to claim 2, characterized in that, The air guide channel has multiple parallel channels.

5. The deep waterproof loudspeaker with a self-venting structure according to claim 2, characterized in that, The width of the air guide channel is greater than the diameter of the balance hole.

6. The deep waterproof loudspeaker with a self-venting structure according to claim 2, characterized in that, The plurality of the aforementioned balancing holes are arranged in one or more straight lines.

7. The deep waterproof loudspeaker with a self-venting structure according to any one of claims 1-6, characterized in that, The diaphragm has a cutout at its center, the dome closes the cutout, and a waterproof and breathable membrane is attached to the dome.

8. The deep waterproof loudspeaker with a self-venting structure according to any one of claims 1-6, characterized in that, The support system includes a bracket and a waterproof front cover. The outer side of the diaphragm extends to form a diaphragm outer diameter fitting portion, which is sandwiched between the bracket and the waterproof front cover.

9. The deep waterproof loudspeaker with a self-venting structure according to claim 8, characterized in that, The waterproof front cover has an opening that exposes the dome.

10. The deep waterproof loudspeaker with a self-venting structure according to any one of claims 1-6, characterized in that, The magnetic power system further includes a magnetic bowl and a magnet disposed on the magnetic bowl, with the magnetic pole piece disposed on the magnet.

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