Self-pressure-relief waterproof loudspeaker with waterproof and breathable nuclear track vibrating membrane
By using the nuclear pore vibration membrane as the waterproof and breathable membrane, the problems of insufficient tensile strength of the waterproof and breathable membrane and inconsistent gas flow rate in the prior art are solved, and the effect of maintaining the waterproof and breathable function in a high-pressure environment and accurately measuring the air pressure is achieved.
Patent Information
- Application Number
- CN202421101412.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The waterproof and breathable membrane of existing self-relieving waterproof speakers has problems such as insufficient tensile strength, irregular micropore distribution, and inconsistent gas flow through flow, resulting in easy water inlet and misjudgment of air pressure sensors under high-pressure environments.
The nuclear pore vibration membrane is used as the waterproof and breathable membrane. The high mechanical strength and toughness of the nuclear pore membrane meet the requirements of deep waterproofing, and the controllable pore density and uniform pore size ensure the consistency of air flow.
It realizes that the waterproof and breathable function can be maintained in high-pressure environments, avoid water inlet, and accurately measure air pressure to meet the needs of the built-in air pressure sensor.
Smart Images
Figure CN222582583U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of loudspeakers, in particular to a waterproof and breathable self-decompression waterproof loudspeaker with a core hole vibration membrane. Background Art
[0002] Our company's first generation of self-pressure relief waterproof speakers are mainly used in electronic products that need to work underwater. They have deep waterproof and efficient ventilation functions. They can not only release the gas generated by the internal working heat of electronic products through waterproof speakers to ensure the consistency of pressure inside and outside electronic products, but also be deeply waterproof. For example, when diving or swimming, it can effectively prevent external water from soaking the internal electronic components of electronic products to ensure the normal operation of electronic products. The self-pressure relief waterproof speaker mainly includes the speaker magnetic circuit, speaker coil, nuclear hole waterproof breathable vibration membrane, sound ball top, etc. The vibration membrane is an important sound-generating device of the speaker (referred to as the diaphragm). The diaphragm is equipped with a sound ball top, and the diaphragm can also be integrally formed. It is a component that converts electrical signals into mechanical vibrations and generates sound output. It is an important component of the speaker. Its working principle: In the speaker, the diaphragm assembly is installed in the magnetic field of the drive unit, usually fixed between a pair of magnets and connected to the voice coil. When current passes through the voice coil, it will be affected by the magnetic field and start to move. As the audio signal changes, the voice coil and diaphragm assembly will also move at the corresponding frequency and amplitude, thereby generating sound waves and making sounds.
[0003] Our company's first generation of self-pressure relief waterproof speakers, in order to achieve waterproof and pressure relief functions, has a vent area on the top of the sound ball, and the vent area is covered with an ePtfe waterproof breathable membrane to achieve a waterproof and breathable effect. After it is installed in the housing of an electronic product, the speaker and the electronic components inside the electronic product will generate heat when working, and the air in the rear sound cavity will begin to swell, generating air pressure, and the pressure value will continue to increase. When the exhaust volume of the pressure relief hole in the rear sound cavity is insufficient, the expanding gas begins to compress the speaker diaphragm, causing unbalanced vibration of the diaphragm, generating vibration and small sound phenomena. The above phenomenon is more obvious in speakers with closed rear sound cavities. The first generation of waterproof breathable membrane uses ePtfe waterproof breathable membrane. With actual use, it is gradually found that the waterproof sound-generating components composed of ePtfe waterproof breathable membrane and sound ball top have many problems:
[0004] 1. The ePtfe waterproof breathable membrane is obtained by stretching polytetrafluoroethylene (PTFE) material. The stretched membrane is soft and has insufficient tensile strength. The ePtfe material has almost no rigidity. Therefore, the finished ePtfe waterproof breathable membrane needs to be supported and protected by non-woven fabrics. When applied to waterproof products with a depth of more than 50 meters, once the water pressure is greater than 500KPa, there will be a stratification problem between the ePtfe waterproof breathable membrane and the non-woven fabric. Once stratified, the ePtfe waterproof breathable membrane will be easily torn in an instant, causing water to enter the electronic products;
[0005] Second, in order to meet the air permeability requirements of self-decompression waterproof speaker carriers used in smart watches, mobile phones and other electronic products, to achieve consistency between internal and external pressures, and to meet the accurate detection of altitude by air sensors, it is necessary to ensure the consistency of the gas flow through the ePtfe waterproof breathable membrane. However, due to the limitations of its production and stretching process into micropores, the micropores on the ePtfe waterproof breathable membrane are irregularly distributed, the consistency of the gas flow is poor, and the gas flow tolerance per unit time is large. When used on products with built-in air pressure sensors, the air pressure sensor has a certain probability of misjudgment;
[0006] 3. The first generation of self-pressure-releasing waterproof speakers uses a rigid, light and thin sheet (such as PEI / PEN / PET / PI or even aluminum foil, copper foil and other rigid sheets. The air holes need to be opened by laser or punched mechanically. Later, the sound ball and the ePtfe waterproof breathable membrane need to be precisely aligned. When laminating, due to the requirements of the waterproof level, the surface of the sound ball needs to be plasma cleaned and other complex processes before it can be integrated with the ePtfe waterproof breathable membrane to achieve the function of deep waterproof and breathable. The hole opening and production process are very complicated. Utility Model Content
[0007] The purpose of the utility model is to solve the above-mentioned technical problems and provide a self-pressure relief waterproof speaker with a nuclear pore vibration membrane that is waterproof and breathable, and the vibration membrane is made of a nuclear pore membrane. Compared with the first generation of self-pressure relief waterproof speakers, which use a traditional sounding ball top superimposed with an EPTFE waterproof and breathable membrane to achieve the waterproof and breathable function, the production process is simple. This self-pressure relief waterproof speaker with a nuclear pore vibration membrane that is waterproof and breathable completes the waterproof and breathable function through a nuclear pore waterproof and breathable vibration membrane. The nuclear pore waterproof and breathable vibration membrane has high mechanical strength and good toughness, and meets the requirements of deep waterproof products for the toughness and high-pressure tearing of the waterproof and breathable membrane. The nuclear pore membrane has controllable pore density, consistent pore size, regular pore shape, very good air flow consistency, and is very stable. It can fully meet the needs of electronic products with built-in air pressure sensors and electronic products that accurately measure the current altitude. It is a precision microporous membrane material that can reach nano-level micropores and has deep waterproof and breathable functions.
[0008] In order to achieve the above-mentioned purpose, the utility model provides the following scheme: The utility model discloses a self-depressurizing waterproof loudspeaker with a nuclear hole vibration membrane that is waterproof and breathable, comprising a loudspeaker bracket (7), a nuclear hole waterproof and breathable vibration membrane (5) and a loudspeaker cover (6), wherein the nuclear hole waterproof and breathable vibration membrane (5) is composed of a nuclear hole membrane, a loudspeaker magnetic circuit (9) is installed at one end of the loudspeaker bracket (7), a loudspeaker coil (8) is arranged inside and outside the loudspeaker magnetic circuit (9), the loudspeaker coil (8) is fixedly connected to the nuclear hole waterproof and breathable vibration membrane (5), and the loudspeaker cover (6) presses the edge of the nuclear hole waterproof and breathable vibration membrane (5) against the other end of the loudspeaker bracket (7).
[0009] Preferably, the nuclear pore waterproof breathable vibration membrane (5) is a nuclear pore membrane.
[0010] Preferably, the nuclear pore waterproof breathable vibration membrane (5) is composed of a single nuclear pore membrane or multiple nuclear pore membranes.
[0011] Preferably, the core hole waterproof breathable vibration membrane (5) is provided with a sound-generating ball top (3).
[0012] Preferably, the core hole waterproof breathable vibration membrane (5) is formed in one piece.
[0013] Preferably, the core hole waterproof breathable vibration membrane (5) is integrally formed, and the integrally formed core hole waterproof breathable vibration membrane (5) is convex or concave.
[0014] Preferably, the core hole waterproof breathable vibration membrane (5) is integrally formed, and the integrally formed core hole waterproof breathable vibration membrane (5) is convex or concave, and has a pattern.
[0015] Compared with the prior art, the utility model has achieved the following technical effects:
[0016] 1. Compared with the first generation of self-pressure relief waterproof speakers, this new type of nuclear pore vibration membrane waterproof and breathable self-pressure relief waterproof speaker has a nuclear pore membrane, which has breathable and waterproof functions. It no longer requires components composed of a sound-generating ball top and an ePtfe waterproof and breathable membrane. It eliminates the original complex process of opening multiple holes in the ordinary sound-generating ball top and then precisely compounding the ePtfe waterproof and breathable membrane, eliminates the expensive ePtfe waterproof and breathable membrane, and optimizes the production process and cost.
[0017] 2. This nuclear hole vibration membrane is waterproof and breathable, and the self-pressure relief waterproof speaker has high mechanical strength and good toughness, which can meet the requirements of deep waterproof products for toughness of waterproof and breathable membrane and resistance to tearing under pressure above 500KPA.
[0018] 3. This nuclear pore vibration membrane is waterproof and breathable, and the self-depressurized waterproof speaker has the characteristics of controllable pore density, uniform pore size, regular pore shape, smooth membrane surface and no fiber shedding. The air flow consistency is very good. It is a precision microporous membrane material that can reach nano-level micropores, has deep waterproof and breathable functions, and is very stable. It can fully meet the needs of electronic products with built-in air pressure sensors and electronic products that accurately measure the current altitude.
[0019] 4. The nuclear hole vibration membrane waterproof and breathable self-pressure relief waterproof speaker can be made into an integrally formed nuclear hole waterproof and breathable vibration membrane to directly produce sound when making a speaker below 0.5W, eliminating the sound ball top. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 This is a schematic diagram of the structure of a self-pressure relief waterproof speaker installed in an electronic product (without a pressure relief hole);
[0022] Figure 2 This is a schematic diagram of the internal structure of a self-pressure relief waterproof speaker installed in an electronic product (with a pressure relief hole);
[0023] Figure 3 It is a cross-sectional view of a self-decompression waterproof speaker (the top of the sound-generating ball is located above the core hole waterproof and breathable vibration membrane);
[0024] Figure 4 It is a cross-sectional view of a self-decompression waterproof speaker (the top of the sound-generating ball is located below the core hole waterproof and breathable vibration membrane);
[0025] Figure 5 It is a cross-sectional view of a self-decompression waterproof speaker (a convex core hole waterproof breathable vibration membrane);
[0026] Figure 6 It is a cross-sectional view of a self-decompression waterproof speaker (concave core hole waterproof breathable vibration membrane);
[0027] Figure 7 This is a high-power electron microscope image of the top of the nuclear pore membrane that is waterproof and breathable and produces sound.
[0028] Explanation of the reference numerals: 1. electronic product housing; 2. dustproof net; 3. sound ball top; 4. sound outlet hole; 5. core hole waterproof and breathable vibration membrane; 6. speaker cover (6); 7. speaker bracket; 8. speaker coil; 9. speaker magnetic circuit; 10. rear sound cavity; 11. pressure relief hole; 12. core micropore. DETAILED DESCRIPTION
[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0030] This embodiment provides a waterproof and breathable self-decompression waterproof speaker with a core hole vibration membrane, such as Figures 1 to 7 As shown, it includes a speaker bracket 7, a core hole waterproof breathable vibration membrane 5 and a speaker cover (6) 6, wherein the core hole waterproof breathable vibration membrane 5 is composed of a core hole membrane. A speaker magnetic circuit 9 is installed at one end of the speaker bracket 7, and a speaker coil 8 is arranged in the speaker magnetic circuit 9 or a speaker coil 8 is arranged inside and outside the speaker magnetic circuit 9. The speaker coil 8 is fixedly connected to the core hole waterproof breathable vibration membrane 5. The speaker cover (6) 6 presses the edge of the core hole waterproof breathable vibration membrane 5 against the other end of the speaker bracket 7.
[0031] Nuclear pore membrane, also known as heavy ion microporous membrane, is a kind of precision microporous membrane material. It is made by punching holes in insulating materials with heavy charged particles and chemically etching and expanding holes. When the etching range of heavy charged particles in the insulating material film is greater than the thickness of the film, the radiation damage generated on each vertically incident heavy charged particle path can be preferentially etched by chemical methods to form nano-scale micropores that penetrate the insulation. It has the functions of deep waterproof and breathable. Gas can pass through the nuclear pore membrane, but water from the outside cannot pass through the nuclear pore membrane. It has the characteristics of controllable pore density, uniform and controllable pore size, regular pore shape, smooth membrane surface and no fiber shedding. The nuclear pore membrane has high mechanical strength and good toughness. It can effectively withstand the tearing of deep water pressure of more than 50 meters. No additional non-woven fabric support is required. Moreover, the nuclear pore waterproof and breathable vibration membrane 5 replaces the first generation and does not need to be divided into two parts, which simplifies the manufacturing process. The nuclear pore membrane is a porous filter material formed by high-energy heavy ions penetrating the polymer film and then chemically etching to enlarge the pore size. The opening process is simple, stable and accurate.
[0032] (1) Working principle:
[0033] When the self-decompression waterproof speaker with core hole waterproof breathable vibration membrane is applied to electronic products with deep waterproof requirements, refer to Figure 1 and Figure 2 As shown, the electronic product includes an electronic product housing 1, a mounting cavity is provided in the electronic product housing 1, a waterproof speaker is provided in the mounting cavity, the waterproof speaker divides the mounting cavity into a front sound cavity and a rear sound cavity 10, one end of the speaker bracket 7 with the speaker cover 6 facing the front sound cavity, and one end of the speaker bracket 7 with the speaker coil 8 facing the rear sound cavity 10, a sound outlet 4 is provided on the front sound cavity, and the sound outlet 4 corresponds to the core hole waterproof breathable vibration membrane 5, the rear sound cavity 10 is used to install the electronic components of the electronic product, and a dustproof net 2 is provided in the front sound cavity, and the dustproof net 2 is used to cover the sound outlet 4. The rear sound cavity 10 has a pressure relief type rear sound cavity, and the rear sound cavity 10 is provided with a pressure relief hole 11, and a closed rear sound cavity, that is, there is no pressure relief hole 11.
[0034] When electronic products are in use, the electronic components and speakers continue to heat up or heat up rapidly, the air in the rear sound cavity 10 expands, and the pressure increases. The expanded gas in the rear sound cavity 10 enters the inner ring of the speaker bracket 8, and then flows out from the core hole waterproof breathable vibration membrane 6. Because the core hole waterproof breathable vibration membrane 6 is composed of a core hole membrane, it will be discharged from the core micropores 12 of the core hole waterproof breathable vibration membrane 6, realizing automatic pressure relief, eliminating the gas pressure generated by the working heat of the machine, protecting the normal working balance of the speaker vibration system, and keeping the rear sound cavity 10 of the casing consistent with the external atmospheric pressure in real time without changing the original electroacoustic characteristics of the speaker.
[0035] (2) The nuclear pore membrane production process is divided into two steps:
[0036] The first step is to use a large nuclear facility to accelerate the nuclei to very high energy to bombard a plastic film of a certain thickness. When the etching range of heavy charged particles in the insulating material film is greater than the film thickness, the radiation damage generated on each vertically incident heavy charged particle path is about several nanometers in diameter. With such a radiation-damaged film, we can understand that there can be many small holes of several nanometers on the surface of the film. The second step is to put the above radiation-damaged film into chemical reagent etching, so that the radiation-damaged channel on the film can be turned into a straight nuclear micropore 12. By controlling the irradiation conditions and etching conditions of the nuclei, nuclear pore membranes with different pore densities and different pore diameters can be obtained.
[0037] The nuclear pore membrane has good chemical and temperature properties. It has four main features: first, the pore density is controllable, from 1 small hole per square centimeter to 10 billion small holes; second, the pore size is uniform, all the small holes have the same diameter, because when the nucleus is accelerated, it has a single energy and a single mass, so all the pore sizes are the same; third, the pore size range is very wide and precisely controllable, from a few nanometers to dozens of microns, spanning four orders of magnitude that are invisible to the naked eye; fourth, it has deep waterproof and breathable functions; fifth, the nuclear pore membrane has high mechanical strength, good toughness, and a smooth membrane surface without fiber shedding.
[0038] In this embodiment, Figures 1 to 7 As shown, the core hole waterproof breathable vibration membrane 5 is a core hole membrane.
[0039] In this embodiment, Figures 1 to 7 As shown, the nuclear pore waterproof breathable vibration membrane 5 is composed of a single nuclear pore membrane or multiple nuclear pore membranes.
[0040] In this embodiment, Figures 1 to 7 As shown, the core hole waterproof breathable vibration membrane 5 is provided with a sound-generating ball top 3. The sound-generating ball top 3 can be located above the core hole waterproof breathable vibration membrane 5, such as Figure 3 As shown, the sound-generating ball top 3 can also be located below the core hole waterproof and breathable vibration membrane 5, such as Figure 4 shown.
[0041] In this embodiment, Figures 1 to 7 As shown, the core hole waterproof breathable vibration membrane 5 is formed in one piece, that is, the core hole waterproof breathable vibration membrane 5 is used as both a vibration membrane and a sound-generating ball top 3.
[0042] Further, in this embodiment, if Figures 1 to 7 As shown, the core hole waterproof breathable vibration membrane 5 is integrally formed, and the integrally formed core hole waterproof breathable vibration membrane 5 is convex or concave. Figure 5 As shown, the concave Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 6 .
[0043] Further, in this embodiment, if Figures 1 to 7 As shown, the core hole waterproof breathable vibration membrane 5 is integrally formed, and the integrally formed core hole waterproof breathable vibration membrane 5 is convex or concave, with a pattern, which meets the functional requirements of the speaker to enhance the mid- and high-frequency characteristics.
[0044] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A waterproof and breathable self-decompression waterproof speaker with a nuclear hole vibration membrane, characterized in that: The speaker comprises a speaker bracket (7), a core hole waterproof breathable vibration membrane (5) and a speaker cover (6); the core hole waterproof breathable vibration membrane (5) is composed of a core hole membrane; a speaker magnetic circuit (9) is installed at one end of the speaker bracket (7); a speaker coil (8) is arranged inside the speaker magnetic circuit (9), or speaker coils (8) are arranged inside and outside the speaker magnetic circuit (9); the speaker coil (8) is fixedly connected to the core hole waterproof breathable vibration membrane (5); and the speaker cover (6) presses the edge of the core hole waterproof breathable vibration membrane (5) against the other end of the speaker bracket (7).
2. A waterproof and breathable self-decompression waterproof speaker with a nuclear hole vibration membrane according to claim 1, characterized in that: The nuclear pore waterproof and breathable vibration membrane (5) is composed of a single nuclear pore membrane or multiple nuclear pore membranes.
3. A waterproof and breathable self-decompression waterproof speaker with a nuclear hole vibration membrane according to claim 1, characterized in that: A sound-generating spherical top (3) is arranged on the core hole waterproof breathable vibration membrane (5), and the sound-generating spherical top (3) is located above the core hole waterproof breathable vibration membrane (5), or the sound-generating spherical top (3) is located below the core hole waterproof breathable vibration membrane (5).
4. A waterproof and breathable self-decompression waterproof speaker with a nuclear hole vibration membrane according to claim 1, characterized in that: The core hole waterproof and breathable vibration membrane (5) is formed in one piece.
5. A waterproof and breathable self-decompression waterproof speaker with a nuclear hole vibration membrane according to claim 4, characterized in that: The core hole waterproof breathable vibration membrane (5) is concave.
6. A waterproof and breathable self-decompression waterproof speaker with a core hole vibration membrane according to claim 5, characterized in that: The core hole waterproof and breathable vibration membrane (5) is provided with a pattern.