Self-pressure-relief waterproof loudspeaker with waterproof and breathable nuclear track vibrating membrane

Abstract

The invention discloses a self-pressure-relief waterproof loudspeaker with a waterproof and breathable nuclear track vibrating membrane, and belongs to the technical field of loudspeakers. Comprising a loudspeaker support, a nuclear track waterproof breathable vibrating membrane and a loudspeaker surface cover, the nuclear track waterproof breathable vibrating membrane is composed of a nuclear track membrane, one end of the loudspeaker support is provided with a loudspeaker magnetic circuit, loudspeaker coils are arranged inside and outside the loudspeaker magnetic circuit, and the loudspeaker coils are fixedly connected with the nuclear track waterproof breathable vibrating membrane. The loudspeaker surface cover presses the edge of the nuclear track waterproof breathable vibrating membrane on the loudspeaker support. Compared with a first-generation self-pressure-relief waterproof loudspeaker, the self-pressure-relief waterproof loudspeaker is simple in production process. The nuclear pore waterproof and breathable vibrating membrane achieves waterproof and breathable functions, is high in mechanical strength and good in toughness, and meets the requirements of deep waterproof products for toughness and high-pressure tearing of the waterproof and breathable membrane. The nuclear track membrane is good in air flow consistency, can meet the requirements of an electronic product with a built-in air pressure sensor and an electronic product for accurately measuring the current altitude, and has deep waterproof and air leakage functions.

Description

Technical Field

[0001] This invention relates to the field of loudspeaker technology, and in particular to a self-releasing waterproof loudspeaker with a waterproof and breathable core pore diaphragm. Background Technology

[0002] Our company's first-generation self-pressure-relieving waterproof loudspeakers are primarily used in electronic products that require underwater operation. They feature deep waterproofing and highly efficient ventilation, allowing the release of gases generated by heat during operation, ensuring consistent internal and external pressure. The deep waterproofing effectively prevents water from wetting internal electronic components during diving or swimming, thus ensuring normal operation. The self-pressure-relieving waterproof loudspeaker mainly consists of a loudspeaker magnetic circuit, loudspeaker coil, a waterproof and breathable diaphragm with a core hole, and a sound-generating dome. The diaphragm is a crucial sound-generating component of the loudspeaker. It is a component that converts electrical signals into mechanical vibrations to produce sound output. Its working principle is as follows: In a loudspeaker, the diaphragm assembly is installed in the magnetic field of the driver unit, typically fixed between a pair of magnets and connected to the voice coil. When current passes through the voice coil, it is affected by the magnetic field and begins to move. As the audio signal changes, the voice coil and diaphragm assembly move at corresponding frequencies and amplitudes, generating sound waves and producing sound.

[0003] Our company's first-generation self-relieving waterproof loudspeaker features a vented area on the sound-emitting dome to achieve waterproof and pressure-relieving functions. This vented area is covered with an eFPte waterproof and breathable membrane for waterproofing and breathability. When installed inside an electronic product casing, the loudspeaker and internal electronic components generate heat during operation. This causes the air in the rear acoustic chamber to expand, creating air pressure. As the pressure increases, if the venting capacity of the rear acoustic chamber is insufficient, the expanding gas begins to compress the loudspeaker diaphragm, causing unbalanced diaphragm vibration and resulting in vibration and low-frequency noise. This phenomenon is more pronounced in loudspeakers with sealed rear acoustic chambers. While the first-generation waterproof and breathable membrane uses eFPte, further use has revealed several problems with the waterproof sound-generating assembly formed by the eFPte waterproof and breathable membrane and the sound-emitting dome.

[0004] 1. eFpte waterproof and breathable membrane is made by stretching polytetrafluoroethylene (PTFE) material. This stretched membrane is soft and lacks tensile strength. eFpte material has almost no rigidity. Therefore, the finished eFpte waterproof and breathable membrane needs to be supported and protected by non-woven fabric. When applied to waterproof products with a depth of more than 50 meters, if the water pressure exceeds 500 kPa, delamination will occur between the eFpte waterproof and breathable membrane and the non-woven fabric. Once delamination occurs, the eFpte waterproof and breathable membrane can be easily torn instantly, causing water to enter electronic products.

[0005] 2. In order to meet the air permeability requirements of self-releasing waterproof speaker carriers used in various electronic products such as smartwatches and mobile phones, and to achieve consistency between internal and external pressures, so as to meet the accurate detection of altitude by air sensors, it is necessary to ensure the consistency of gas flow through the eFpte waterproof breathable membrane. However, due to the limitations of its production process of stretching into micropores, the micropores on the eFpte waterproof breathable membrane are irregularly distributed, resulting in poor consistency of gas flow and a large tolerance in gas flow per unit time. When used in products with built-in air pressure sensors, this can lead to a certain probability of false judgment by the air pressure sensors.

[0006] Third, the sound-emitting dome of the first-generation self-releasing waterproof speaker is made of rigid, thin sheets (such as PEI / PEN / PET / PI, or even aluminum foil, copper foil, etc.). Its vent holes need to be laser-drilled or mechanically punched. Afterwards, the sound-emitting dome and the eFpte waterproof and breathable membrane need to be precisely aligned. Due to the waterproof level requirements, the surface of the sound-emitting dome often needs to undergo complex processes such as plasma cleaning treatment to form a whole with the eFpte waterproof and breathable membrane to achieve the function of deep waterproof and breathable function. The drilling and manufacturing processes are very complicated. Summary of the Invention

[0007] The purpose of this invention is to solve the aforementioned technical problems and provide a self-releasing waterproof loudspeaker with a core-pore vibrating membrane that is waterproof and breathable. The vibrating membrane is made of a core-pore membrane. Compared to the first-generation self-releasing waterproof loudspeakers that use a traditional sound-generating dome superimposed with an EPTFE waterproof and breathable membrane to achieve waterproof and breathable functions, the manufacturing process is simpler. This self-releasing waterproof loudspeaker with a core-pore vibrating membrane achieves waterproof and breathable functions through the core-pore waterproof and breathable vibrating membrane. The core-pore waterproof and breathable vibrating membrane has high mechanical strength and good toughness, meeting the requirements of deep waterproof products for the toughness and high-pressure tear resistance of the waterproof and breathable membrane. The core-pore membrane has controllable pore density, consistent pore size, regular pore shape, and excellent and stable airflow consistency. 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 achieve nanoscale micropores, possessing both deep waterproof and breathable functions.

[0008] To achieve the above objectives, the present invention provides the following solution: The present invention discloses a self-pressure relief waterproof loudspeaker with a nuclear pore diaphragm that is waterproof and breathable, including a loudspeaker bracket (7), a nuclear pore waterproof and breathable diaphragm (5), and a loudspeaker cover (6). The nuclear pore waterproof and breathable diaphragm (5) is composed of a nuclear pore membrane. A loudspeaker magnetic circuit (9) is installed at one end of the loudspeaker bracket (7). A loudspeaker coil (8) is provided inside and outside the loudspeaker magnetic circuit (9). The loudspeaker coil (8) is fixedly connected to the nuclear pore waterproof and breathable diaphragm (5). The loudspeaker cover (6) presses the edge of the nuclear pore waterproof and breathable diaphragm (5) against the other end of the loudspeaker bracket (7).

[0009] Preferably, the nuclear pore waterproof and breathable vibration membrane (5) is a nuclear pore membrane.

[0010] Preferably, the nuclear pore waterproof and breathable vibration membrane (5) is composed of one or more nuclear pore membranes.

[0011] Preferably, the core-pore waterproof and breathable vibration membrane (5) is provided with a sound-emitting dome (3).

[0012] Preferably, the core pore waterproof and breathable vibration membrane (5) is integrally formed.

[0013] Preferably, the core-pore waterproof and breathable vibration membrane (5) is integrally formed, and the integrally formed core-pore waterproof and breathable vibration membrane (5) is convex or concave.

[0014] Preferably, the core-pore waterproof and breathable vibration membrane (5) is integrally formed, and the integrally formed core-pore waterproof and breathable vibration membrane (5) is convex or concave and has a pattern.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] 1. Compared to the first generation of self-pressure relief waterproof loudspeakers, the self-pressure relief waterproof loudspeaker with a core-pore diaphragm is a core-pore membrane, which has both breathable and waterproof functions. It eliminates the need for components consisting of a sound-generating dome and an eFpte waterproof and breathable membrane. It also eliminates the original complex process of opening multiple holes in a conventional sound-generating dome and then precisely bonding an eFpte waterproof and breathable membrane, thus eliminating the expensive eFpte waterproof and breathable membrane and optimizing the production process and cost.

[0017] 2. This self-releasing waterproof loudspeaker features a core-pore diaphragm that is waterproof and breathable. The core-pore waterproof and breathable diaphragm has high mechanical strength and good toughness, meeting the requirements of deep waterproof products for the toughness of the waterproof and breathable membrane and its resistance to pressure tearing of over 500KPA.

[0018] 3. This core-pore vibrating membrane is a waterproof and breathable self-releasing waterproof speaker. The core-pore waterproof and breathable vibrating membrane has the characteristics of controllable pore density, uniform pore size, regular pore shape, smooth membrane surface without fiber shedding, etc. It has very good airflow consistency. It is a precision microporous membrane material that can achieve nanoscale micropores. It 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. This waterproof and breathable self-pressure-relieving waterproof loudspeaker with a core pore diaphragm can be manufactured as an integrally formed waterproof and breathable diaphragm to directly generate sound when making loudspeakers below 0.5W, eliminating the need for a sound-generating dome. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of a self-releasing waterproof speaker installed inside an electronic product (without a pressure relief hole);

[0022] Figure 2 A schematic diagram of the internal structure of a self-relieving waterproof speaker installed in an electronic product (with a pressure relief vent);

[0023] Figure 3 This is a cross-sectional view of a self-releasing waterproof loudspeaker (with the sound-emitting dome located above the core-pore waterproof and breathable vibrating membrane);

[0024] Figure 4 This is a cross-sectional view of a self-releasing waterproof loudspeaker (with the sound-emitting dome located below the core pore waterproof and breathable vibrating membrane);

[0025] Figure 5 A cross-sectional view of a self-relieving waterproof loudspeaker (with a convex core-hole waterproof and breathable vibrating membrane);

[0026] Figure 6 A cross-sectional view of a self-relieving waterproof loudspeaker (with a concave core-hole waterproof and breathable vibrating membrane);

[0027] Figure 7 High-magnification electron microscope image of a waterproof, breathable, and acoustic dome for nuclear pore membranes.

[0028] Explanation of reference numerals in the attached drawings: 1. Electronic product casing; 2. Dustproof mesh; 3. Sound-emitting dome; 4. Sound outlet; 5. Core pore waterproof and breathable vibrating 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 Implementation

[0029] 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.

[0030] This embodiment provides a self-releasing waterproof loudspeaker with a nuclear pore diaphragm that is waterproof and breathable, such as... Figures 1 to 7 As shown, the speaker includes a speaker bracket 7, a perforated waterproof and breathable diaphragm 5, and a speaker cover (6) 6. The perforated waterproof and breathable diaphragm 5 is composed of a perforated membrane. A speaker magnetic circuit 9 is installed at one end of the speaker bracket 7. A speaker coil 8 is provided inside the speaker magnetic circuit 9, or a speaker coil 8 is provided both inside and outside the speaker magnetic circuit 9. The speaker coil 8 is fixedly connected to the perforated waterproof and breathable diaphragm 5. The speaker cover (6) 6 presses the edge of the perforated waterproof and breathable diaphragm 5 against the other end of the speaker bracket 7.

[0031] Nuclear pore membranes, also known as heavy ion microporous membranes, are a type of precision microporous membrane material. They are formed by drilling and chemically etching holes in an insulating material using heavy charged particles. When the etchable range of heavy charged particles in an insulating film is greater than the film thickness, the radiation damage generated along the path of each vertically incident heavy charged particle can be preferentially etched using chemical methods to form nanoscale micropores that penetrate the insulation. This results in deep waterproofing and breathability, allowing gas to pass through the nuclear pore membrane, while preventing external water from passing through. It features controllable pore density, uniform and controllable pore size, regular pore shape, and smooth membrane surface without fiber shedding. The nuclear pore membrane has high mechanical strength and good toughness, and can effectively withstand the tearing of water pressure at depths of over 50 meters. It does not require additional non-woven fabric support. Moreover, the nuclear pore waterproof and breathable vibration membrane 5 replaces the first generation and does not need to be divided into two parts, simplifying the manufacturing process. The nuclear pore membrane is a porous filter material formed by using high-energy heavy ions to penetrate the polymer film and then enlarging the pore size through chemical etching. The opening process is simple, stable, and precise.

[0032] (1) Working principle:

[0033] When applying the self-pressure-relieving waterproof speaker with its perforated waterproof and breathable diaphragm to electronic products requiring deep waterproofing, refer to... Figure 1 and Figure 2 As shown, the electronic product includes an electronic product casing 1, which has a mounting cavity. A waterproof speaker is installed within the mounting cavity, dividing the mounting cavity into a front sound cavity and a rear sound cavity 10. A speaker bracket 7 has a speaker cover 6 mounted on one end facing the front sound cavity, and a speaker coil 8 mounted on the other end facing the rear sound cavity 10. The front sound cavity has a sound outlet 4, which corresponds to a waterproof and breathable vibrating diaphragm 5. The rear sound cavity 10 is used to install the electronic components of the electronic product. A dustproof mesh 2 is installed inside the front sound cavity to cover the sound outlet 4. The rear sound cavity 10 can be a pressure-relief type with a pressure relief hole 11, or a sealed type without a pressure relief hole 11.

[0034] When electronic products are in use, the electronic components and speakers continuously or rapidly heat up, causing the air inside the rear acoustic cavity 10 to expand and the pressure to increase. The expanded gas in the rear acoustic cavity 10 enters the inner ring of the speaker bracket 8 and then flows out through the core-pore waterproof and breathable vibrating membrane 6. Because the core-pore waterproof and breathable vibrating membrane 6 is composed of a core-pore membrane, it will be discharged through the core micropores 12 of the core-pore waterproof and breathable vibrating membrane 6, realizing automatic pressure relief, eliminating the gas pressure generated by the heat of the machine operation, protecting the normal working balance of the speaker vibration system, and keeping the rear acoustic cavity 10 of the housing consistent with the external atmospheric pressure in real time, without changing the original electroacoustic characteristics of the speaker.

[0035] (2) The nuclear pore membrane fabrication process consists of two steps:

[0036] The first step involves using a large nuclear facility to accelerate atomic nuclei to very high energies to bombard a plastic film of a certain thickness. When the etchable range of heavily charged particles in the insulating film exceeds the film thickness, the radiation damage generated along the path of each vertically incident heavily charged particle has a diameter of approximately several nanometers. A film with such radiation damage can be understood as having numerous pores of several nanometers on its surface. The second step involves etching the aforementioned radiation-damaged film with chemical reagents, transforming the radiation-damaged channels on the film into straight-through nuclear micropores 12. By controlling the irradiation and etching conditions of the atomic nuclei, nuclear-pore films with different pore densities and pore sizes can be obtained.

[0037] Nuclear pore membranes possess excellent chemical and temperature properties. They have four main characteristics: First, the pore density is controllable, ranging from one pore per square centimeter to 10 billion pores; second, the pore size is uniform, with all pores having the same diameter because atomic nuclei accelerate with a single energy and a single mass, resulting in identical pore sizes; third, the pore size range is very wide and precisely controllable, from a few nanometers to tens of micrometers, spanning four orders of magnitude invisible to the naked eye; fourth, they possess deep waterproof and breathable functions; and fifth, nuclear pore membranes have high mechanical strength, good toughness, and a smooth surface with no fiber shedding.

[0038] In this embodiment, as Figures 1 to 7 As shown, the nuclear pore waterproof and breathable vibration membrane 5 is a nuclear pore membrane.

[0039] In this embodiment, as Figures 1 to 7 As shown, the nuclear pore waterproof and breathable vibration membrane 5 is composed of one or more nuclear pore membranes.

[0040] In this embodiment, as Figures 1 to 7 As shown, the nuclear-pore waterproof and breathable vibrating membrane 5 is equipped with a sound-generating dome 3. The sound-generating dome 3 can be located above the nuclear-pore waterproof and breathable vibrating membrane 5, such as... Figure 3 As shown, the sound-generating dome 3 can also be located below the nuclear pore waterproof and breathable vibration membrane 5, such as... Figure 4 As shown.

[0041] In this embodiment, as Figures 1 to 7 As shown, the core-pore waterproof and breathable vibration membrane 5 is integrally formed, meaning that the core-pore waterproof and breathable vibration membrane 5 is used both as a vibration membrane and as a sound-generating dome 3.

[0042] Furthermore, in this embodiment, as Figures 1 to 7 As shown, the core-pore waterproof and breathable vibration membrane 5 is integrally formed, and the integrally formed core-pore waterproof and breathable vibration membrane 5 can be convex or concave. A convex shape is as follows: Figure 5 As shown, the concave shape is as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 6 .

[0043] Furthermore, in this embodiment, as Figures 1 to 7 As shown, the core-hole waterproof and breathable diaphragm 5 is integrally formed. The integrally formed core-hole waterproof and breathable diaphragm 5 is convex or concave and has a pattern to meet the functional requirements of improving the mid-high frequency characteristics of the loudspeaker.

[0044] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A self-releasing waterproof loudspeaker with a nuclear pore resonating membrane that is waterproof and breathable, characterized in that, The speaker includes a speaker bracket (7), a core-hole waterproof and breathable vibrating membrane (5), and a speaker cover (6). The core-hole waterproof and breathable vibrating 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 provided inside and outside the speaker magnetic circuit (9). The speaker coil (8) is fixedly connected to the core-hole waterproof and breathable vibrating membrane (5). The speaker cover (6) presses the edge of the core-hole waterproof and breathable vibrating membrane (5) against the other end of the speaker bracket (7).

2. The self-pressure-relieving waterproof loudspeaker with a nuclear pore vibrating membrane that is waterproof and breathable according to claim 1, characterized in that, The nuclear pore waterproof and breathable vibration membrane (5) is a nuclear pore membrane.

3. The self-releasing waterproof loudspeaker with a nuclear pore vibrating membrane that is waterproof and breathable according to claim 1, characterized in that, The nuclear pore waterproof and breathable vibration membrane (5) is composed of one layer of nuclear pore membrane or multiple layers of nuclear pore membrane.

4. The self-releasing waterproof loudspeaker with a nuclear pore vibrating membrane that is waterproof and breathable according to claim 1, characterized in that, The core-pore waterproof and breathable vibration membrane (5) is provided with a sound-emitting dome (3).

5. A self-releasing, waterproof loudspeaker with a water-permeable, vibration-damping membrane based on a core pore as described in claim 1, characterized in that... The core pore waterproof and breathable vibration membrane (5) is integrally formed.

6. A self-releasing waterproof loudspeaker with a nuclear pore vibrating membrane that is waterproof and breathable according to claim 5, characterized in that, The core-pore waterproof and breathable vibration membrane (5) is integrally formed, and the integrally formed core-pore waterproof and breathable vibration membrane (5) is convex or concave.

7. A self-releasing waterproof loudspeaker with a nuclear pore vibrating membrane that is waterproof and breathable according to claim 6, characterized in that, The core-pore waterproof and breathable vibration membrane (5) is integrally formed. The integrally formed core-pore waterproof and breathable vibration membrane (5) is convex or concave and has a pattern.

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