Fiberglass speaker diaphragm for car audio

Abstract

The embodiments of the present disclosure disclose a glass fiber speaker diaphragm for car audio. A specific implementation of the glass fiber speaker diaphragm includes a base layer, a reinforcement layer, and a top layer; the base layer and the top layer include rubber; the reinforcement layer includes glass fiber cloth; the reinforcement layer is located between the base layer and the top layer; the base layer, the reinforcement layer, and the top layer are configured to be integrally formed by die casting; the glass fiber speaker diaphragm is provided with a vibration area and a fixed area; the fixed area surrounds the vibration area; an isolation groove is provided between the vibration area and the fixed area; a groove group is provided on the surface of the vibration area, the groove group includes at least one groove, and each groove in the groove group is arranged in a predetermined manner on the surface of the vibration area; a reinforcing rib is provided on the edge of the vibration area, the reinforcing rib is located in the border area between the vibration area and the isolation groove, the reinforcing rib connects the vibration area and the isolation groove; the reinforcing rib surrounds the groove group. This implementation enhances the strength of the speaker diaphragm by adding glass fiber cloth to the speaker diaphragm, thereby extending its service life.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of audio equipment, and more particularly to a glass fiber speaker diaphragm for vehicle audio. Background Art

[0002] With the popularity of vehicles, people have also set certain standards for the sound quality and service life of car audio. The core component of the audio system is the speaker diaphragm, and its material and structure directly affect the sound quality and service life. As for the speaker diaphragm of car audio, the commonly used speaker diaphragms are easily damaged and need to be replaced in a timely manner. However, the replacement of the speaker diaphragm of car audio has a high technical threshold and cost, and requires following complex steps and using professional tools. It is difficult to replace when damaged, and most people do not have professional tools. It is also expensive to have professional maintenance personnel perform the operation. Therefore, car audio requires a speaker diaphragm with a long service life and high sound quality. Commonly used speaker diaphragms are mostly made of a single material.

[0003] However, when a single material is used to make the speaker diaphragm, the speaker diaphragm has low strength, is sensitive to temperature changes, and is prone to thermal expansion and contraction in extreme weather conditions. This often results in technical problems such as a short service life of the speaker diaphragm and low sound quality.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the inventive concept and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. Summary of the Invention

[0005] The content of this disclosure is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this disclosure is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] Some embodiments of the present disclosure provide a glass fiber speaker diaphragm for vehicle audio to solve one or more of the technical problems mentioned in the above background technology section.

[0007] Some embodiments of the present disclosure provide a glass fiber speaker diaphragm for vehicle audio, wherein the glass fiber speaker diaphragm comprises a base layer, a reinforcement layer, and a top layer; the base layer and the top layer comprise rubber; the reinforcement layer comprises glass fiber cloth; the reinforcement layer is located between the base layer and the top layer; the base layer, the reinforcement layer, and the top layer are configured to be integrally formed by die-casting, wherein the mold comprises a base, a limit block, and a die-casting part; the base is provided with a cavity array, the cavity array being capable of accommodating the limit block; the limit block is provided with a mold cavity array; the die-casting part is provided with a top layer array The top layer array corresponds to the mold cavity array; the glass fiber speaker diaphragm is provided with a vibration area and a fixed area; the fixed area surrounds the vibration area; an isolation groove is provided between the vibration area and the fixed area; a groove group is provided on the surface of the vibration area, the groove group includes at least one groove, and each groove in the groove group is arranged in a predetermined manner on the surface of the vibration area; a reinforcing rib is provided on the edge of the vibration area, the reinforcing rib is located in the border area between the vibration area and the isolation groove, and the reinforcing rib connects the vibration area and the isolation groove; the reinforcing rib surrounds the groove group.

[0008] Optionally, the weaving pattern of the glass fiber cloth includes at least one of the following: plain weave and twill weave.

[0009] Optionally, the fixing area is provided with a flange structure.

[0010] Optionally, the thickness of the base layer and the top layer is 0.1-0.5 mm.

[0011] Optionally, the thickness of the reinforcement layer is 0.05-0.2 mm.

[0012] Optionally, the cross section of the isolation groove is trapezoidal.

[0013] Optionally, the outer surface of the top layer is coated with a hydrophobic coating.

[0014] Optionally, the top width of the above-mentioned isolation groove is 2~3mm, the bottom width is 1~2mm, and the groove depth is 0.5~1.5mm; the inclination angle of the inner wall of the above-mentioned isolation groove is 30°~60°; the inner wall of the above-mentioned isolation groove is provided with a micro-protrusion structure, the height of the above-mentioned micro-protrusion structure is 0.1~0.5mm, and the spacing is 0.3~1mm; the inner wall of the above-mentioned isolation groove is covered with a sound-absorbing coating; the bottom of the above-mentioned isolation groove is filled with a buffer material, and the thickness of the above-mentioned buffer material is 0.2~0.5mm; conductive filler is added to the above-mentioned buffer material; the top of the above-mentioned isolation groove is provided with a chamfered structure at the connection with the above-mentioned vibration area and the above-mentioned fixed area.

[0015] The above-mentioned various embodiments of the present disclosure have the following beneficial effects: the glass fiber speaker diaphragm for vehicle audio of the present disclosure enhances the strength of the speaker diaphragm by adding glass fiber cloth, thereby extending the service life of the speaker diaphragm. Specifically, the reason for the short service life of the speaker diaphragm is that traditional speaker diaphragms are mostly made of a single material, the speaker diaphragm has low strength and short service life. Based on this, some embodiments of the present disclosure provide a glass fiber speaker diaphragm for vehicle audio, the glass fiber speaker diaphragm includes a base layer, a reinforcement layer, and a top layer; the base layer and the top layer include rubber; the reinforcement layer includes glass fiber cloth; the reinforcement layer is located between the base layer and the top layer; the base layer, the reinforcement layer and the top layer are constructed to be integrally formed by die-casting in a mold, wherein the mold includes a base, a limit block and a die-casting part, the base is provided with a cavity array, the cavity array can accommodate the limit block, the limit block is provided with a mold cavity array, and the die-casting part is provided with a top The top layer array corresponds to the mold cavity array. The fiberglass speaker diaphragm comprises a vibrating area and a fixed area. The fixed area surrounds the vibrating area. An isolation groove is provided between the vibrating area and the fixed area. The vibrating area has a surface with a group of grooves, each groove group comprising at least one groove, each groove in the group of grooves being arranged in a predetermined pattern on the surface of the vibrating area. The edge of the vibrating area is provided with a reinforcing rib located at the junction of the vibrating area and the isolation groove, connecting the vibrating area and the isolation groove, and surrounding the group of grooves. The addition of fiberglass cloth to the speaker diaphragm enhances its strength and prolongs its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that components and elements are not necessarily drawn to scale.

[0017] Figure 1 is a schematic structural diagram of a glass fiber speaker diaphragm for car audio according to some embodiments of the present disclosure;

[0018] Figure 2 1 is a front view of a glass fiber speaker diaphragm for car audio according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0019] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0020] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0021] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0022] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0023] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] Figure 1 Schematic diagram of the structure of a glass fiber speaker diaphragm for car audio according to some embodiments of the present disclosure. Figure 1 It includes a top layer 1, a reinforcement layer 2, a base layer 3, a fixing area 4, a vibration area 5, and an isolation groove 6.

[0025] In some embodiments, the fiberglass speaker diaphragm for in-vehicle audio systems includes a base layer 3, a reinforcement layer 2, and a top layer 1. The base layer 3 and the top layer 1 may comprise rubber. The rubber may be a synthetic rubber, such as styrene-butadiene rubber, which has high elasticity and damping properties, effectively absorbing high-frequency vibration energy and reducing sound distortion and noise. The base layer 3 can provide basic support and ensure flexibility, and thus, the thickness of the base layer 3 can be greater than that of the top layer 1. The top layer 1 can prevent the reinforcement layer 2 from being exposed to air, thereby preventing it from abrading or falling off. The reinforcement layer 2 can comprise fiberglass cloth to increase the structural strength of the fiberglass speaker diaphragm. The reinforcement layer 2 is positioned between the base layer 3 and the top layer 1, forming a "sandwich" structure that increases the structural strength and damping properties of the fiberglass speaker diaphragm. Specifically, the base layer 3 and the top layer 1 can prevent the reinforcement layer 2 from being directly exposed to the external environment, thereby extending the service life of the reinforcement layer 2. The reinforcing layer 2 prevents the fiberglass speaker diaphragm from tearing during high-frequency vibrations, enhances its deformation resistance, and extends its service life. The base layer 3, reinforcing layer 2, and top layer 1 can be integrally formed through die-casting, eliminating the need for separate bonding or lamination steps, thereby reducing production steps and costs. Specifically, the mold may include a base, a stopper, and a die-casting component. The base may be a square platform that supports the extrusion of the die-cast component. The base also includes a heating function to heat the rubber during die-casting, ensuring a tighter bond between the rubber and the fiberglass cloth. The stopper includes an array of cavities, each of which is used to define the shape of the die-cast fiberglass speaker diaphragm. Before die-casting, the fiberglass cloth and rubber can be cut to sizes suitable for the die cavity. Two cut pieces of rubber, sandwiching a cut piece of fiberglass cloth, are then placed in the die cavity for die-casting. The die-casting component may be a pneumatically or electrically driven device that applies pressure to the base. The above-mentioned die-casting is provided with a heating function, which is used to heat the rubber during die-casting. The shape of the above-mentioned die-casting can match the above-mentioned base. The upper surface of the above-mentioned base is provided with a cavity array, and the above-mentioned cavity array can accommodate the above-mentioned limit block. Each cavity of the above-mentioned cavity array matches the shape of the above-mentioned limit block. Specifically, the above-mentioned base can be provided with a plurality of cavities arranged in parallel to form a cavity array. For example, the above-mentioned base can be provided with 3 cavities arranged in parallel. A limit block can be placed in each cavity, and the production efficiency of the glass fiber speaker diaphragm can be improved by using multiple limit blocks. The shape of the above-mentioned limit block can be rectangular. The above-mentioned mold cavity array can be a row of parallel distributed mold cavities. For example, each limit block can be provided with 6 mold cavities arranged in parallel to form a mold cavity array.In practice, the die-cast fiberglass speaker diaphragm will stick to the limit block. In order to facilitate the demolding of the die-cast fiberglass speaker diaphragm, the limit block can be set as two parts, including a first limit block and a second limit block. The first limit block is provided with fixing pins at both ends of one side, and a first mold cavity array is provided between the fixing pins at both ends. The first mold cavity array can be a part of the mold cavity array. For example, the first mold cavity array can be half of each mold cavity of the mold cavity array. The second limit block is provided with fixing holes at both ends of one side, and a second mold cavity array is provided between the fixing holes at both ends. The second mold cavity array can be complementary to the first mold cavity array. The first mold cavity array corresponds to the second mold cavity array, and the first mold cavity array and the second mold cavity array can be spliced ​​into a complete mold cavity array. The fixing pin can be embedded in the fixing hole. The cooperation between the fixing pin and the fixing hole can prevent the first mold cavity array and the second mold cavity array from being misaligned during splicing. At the same time, for the die-cast glass fiber speaker diaphragm, rapid demolding can be achieved by separating the first limit block and the second limit block. The above-mentioned cavity array is provided with a base array. The above-mentioned base array is used to limit the structure of the base layer of the glass fiber speaker diaphragm during die-casting. The above-mentioned base array corresponds to the above-mentioned cavity array. The above-mentioned die-casting is provided with a top layer array. The above-mentioned top layer array is used to limit the structure of the top layer of the glass fiber speaker diaphragm during die-casting. The above-mentioned top layer array corresponds to the above-mentioned cavity array. Specifically, the shape and structure of the glass fiber speaker diaphragm can be restricted by the above-mentioned base array, the above-mentioned cavity array and the above-mentioned top layer array, so that each die-cast glass fiber speaker diaphragm meets the manufacturing requirements.

[0026] In some embodiments, the above-mentioned fiberglass speaker diaphragm is provided with a vibration zone 5 and a fixed zone 4. The above-mentioned vibration zone 5 is used to generate sound waves during vibration. Specifically, vibration can be achieved by elastic deformation of rubber, and rigid support is provided by glass fiber cloth. The above-mentioned fixed zone 4 is used to install and fix the fiberglass speaker diaphragm to ensure that the diaphragm does not displace during vibration. The above-mentioned vibration zone 5 may be located in the middle of the above-mentioned fiberglass speaker diaphragm, and the above-mentioned fixed zone 4 may surround the above-mentioned vibration zone 5. For example, the above-mentioned vibration zone 5 may be circular, and the above-mentioned fixed zone 4 may be a ring surrounding the above-mentioned vibration zone 5. An isolation groove 6 is provided between the above-mentioned vibration zone 5 and the above-mentioned fixed zone 4. The above-mentioned isolation groove 6 is configured to disperse vibration energy. The above-mentioned isolation groove 6 may be a "U"-shaped groove. When the vibration zone 5 vibrates, the above-mentioned isolation groove 6 may disperse the vibration energy, reduce the energy concentrated in the fixed zone 4, and prevent the fixed zone 4 from loosening due to high-frequency vibration. Specifically, you can refer to Figure 2 , Figure 2 : is a front view of a glass fiber speaker diaphragm for car audio according to some embodiments of the present disclosure. Figure 2It can be seen that the isolation groove 6 can be a protruding structure between the vibration area 5 and the fixed area 4, which is used to disperse the vibration energy generated when the vibration area 5 vibrates. Figure 1 It can be seen that the isolation groove 6 is convex at the top layer 1 and concave at the base layer 3 , so that the isolation groove 6 as a whole may be a “U”-shaped groove.

[0027] In some embodiments, the surface of the top layer 1 of the vibration zone 5 may be provided with a groove group. The groove group may be an integral structure formed by a plurality of concave lines, which is used to optimize the sound wave propagation characteristics and improve the sound quality. The grooves in the groove group may be arranged in a predetermined manner on the surface of the vibration zone 5. The predetermined arrangement may be a gradually expanding arrangement. Specifically, the grooves in the groove group may take the center of the vibration zone 5 as the starting point, extend outward in a wavy shape, and the width of the grooves gradually expands. The vibration energy can be gradually released by the gradually expanding groove group to avoid local energy concentration. The edge of the vibration zone 5 is provided with a reinforcing rib. The reinforcing rib may be a structure in which the edge of the vibration zone 5 is thickened, which is used to increase the strength of the glass fiber speaker diaphragm. For example, the reinforcing rib may be an arc-shaped protrusion. The reinforcing rib is located at the junction of the vibration zone 5 and the isolation groove 6. The reinforcing ribs connect the vibration area 5 and the isolation groove 6, making the transition between the two areas smoother and preventing cracks from forming at the junction of the vibration area 5 and the isolation groove 6 due to the high-frequency vibration of the fiberglass speaker diaphragm. The reinforcing ribs surround the groove groups. The vibration energy released by the groove groups is further dissipated by the reinforcing ribs, preventing the vibration energy from being transferred to the fixing area 4 and shortening the service life of the fiberglass speaker diaphragm.

[0028] Optionally, the glass fiber cloth may be woven in at least one of the following ways: plain weave or twill weave. The plain weave can impart higher tensile strength and stability to the glass fiber cloth, thereby extending the service life of the glass fiber speaker diaphragm. The twill weave can enhance the glass fiber cloth's flexibility and fatigue resistance, thereby extending the service life of the glass fiber speaker diaphragm.

[0029] Optionally, the fixing area 4 is provided with a flange structure. The flange structure can be a protrusion with a square cross-section, surrounding the outer edge of the fixing portion, and is used to fit into a reserved groove when fixing the fiberglass speaker diaphragm. The reserved groove can be a groove for mounting a speaker diaphragm in a car audio system, matching the flange structure.

[0030] Optionally, the base layer 3 and the top layer 1 have a thickness of 0.5-1 mm, which effectively absorbs vibration energy, suppresses high-frequency resonance, and ensures smooth sound quality. A thickness less than 0.5 mm may cause the fiberglass speaker diaphragm to lose its damping function, affecting sound quality. A thickness greater than 1 mm may increase the weight of the fiberglass speaker diaphragm and the cost.

[0031] Optionally, the thickness of the reinforcement layer 2 can be 0.05-0.2 mm, providing sufficient support while retaining the necessary flexibility to accommodate high-frequency vibrations. A thickness less than 0.05 mm can result in insufficient strength of the fiberglass speaker diaphragm, shortening its service life. A thickness greater than 0.2 mm can reduce the flexibility of the fiberglass speaker diaphragm, leading to a loss of high-frequency detail and degrading sound quality.

[0032] Optionally, the cross section of the isolation slot 6 may be trapezoidal. The oblique sides of the trapezoidal isolation slot 6 can guide the direction of sound wave vibration, reduce irregular reflection or resonance, make the vibration of the glass fiber speaker diaphragm more uniform, and reduce vibration interference.

[0033] Optionally, the outer surface of the top layer 1 is coated with a hydrophobic coating. This coating can be made of polytetrafluoroethylene and covers the outer surface of the top layer 1 to prevent water droplets from adhering and affecting sound quality. This coating also prevents the rubber top layer 1 from being directly exposed to air, reducing the risk of oxidation and cracking of the top layer 1, thereby extending the service life of the fiberglass speaker diaphragm.

[0034] Optionally, the top width of the isolation groove is 2~3mm, the bottom width is 1~2mm, and the groove depth is 0.5~1.5mm. Among them, the top width of 2~3mm can effectively disperse the stress at the junction of the vibration area and the fixed area to prevent crack initiation. If the top width is greater than 3mm, the structural strength of the isolation groove will be insufficient, reducing the stability of the glass fiber speaker diaphragm. If the top width is less than 2mm, the air circulation will be restricted, which may cause low-frequency resonance peaks and affect the acoustic performance. The bottom width of 1~2mm can enhance the fatigue resistance of the isolation groove and prevent the isolation groove from cracking due to long-term vibration. If the bottom width is greater than 2mm, the rigidity of the glass fiber speaker diaphragm will be weakened, resulting in high-frequency response distortion. If the bottom width is less than 1mm, there will be insufficient filling space for the buffer material, the energy absorption efficiency will be reduced, and the sharpness of the resonance frequency cannot be effectively suppressed. The groove depth of 0.5~1.5mm can balance the air circulation and energy absorption capacity of the isolation groove. A groove depth greater than 1.5mm will weaken the overall structural strength of the fiberglass speaker diaphragm and increase the risk of cracks. A groove depth less than 0.5mm will restrict air circulation, preventing the effective suppression of low-frequency resonances and leading to an uneven sound field. The inner wall of the isolation groove has an inclination angle of 30° to 60°, which can disperse stress along the inner wall and reduce the risk of edge cracks. An inclination angle greater than 60° will cause stress concentration on the inner wall and increase the risk of crack propagation. An inclination angle less than 30° will result in an excessively long air flow path, reducing the effectiveness of suppressing low-frequency resonances. The inner wall of the isolation groove is provided with micro-protrusions with a height of 0.1 to 0.5mm and a spacing of 0.3 to 1mm. These micro-protrusions can disrupt air flow and reduce eddy current noise. The inner wall of the isolation groove is covered with a sound-absorbing coating, which can be made of polyester fiber, to absorb high-frequency sound wave reflections from the inner wall and reduce standing wave interference. The bottom of the isolation groove is filled with cushioning material. The buffer material can be silicone rubber with a thickness of 0.2-0.5 mm, which absorbs vibration energy and reduces the sharpness of the resonant frequency. The buffer material contains a conductive filler, such as graphene, which inhibits static electricity accumulation and improves anti-interference capabilities. The top of the isolation slot is chamfered at the junction with the vibration zone and the fixed zone to disperse stress and prevent crack propagation.

[0035] Furthermore, the adoption of technical solutions to address the technical issues mentioned in the background often presents the following problem: the speaker diaphragm generates heat due to vibration during use. This heat cannot be dissipated in a timely manner, causing the speaker diaphragm to soften and degrading sound quality. Conventional solutions to address this difficulty in dissipating heat from the speaker diaphragm typically include vents in the speaker enclosure. However, these conventional solutions still present the following problem: vents can introduce additional noise (such as airflow), resulting in sound distortion.

[0036] Considering the problems with the aforementioned conventional solutions, and facing the aforementioned technical issue: the speaker diaphragm generates heat due to vibration during use, which cannot be dissipated in a timely manner, causing the speaker diaphragm to soften and degrade sound quality. The inventors, considering the disadvantage that ventilation holes may introduce additional noise (such as airflow) and cause sound distortion, and considering the technology available at their organization, have decided to adopt the following solution.

[0037] Optionally, the rubber contains a thermally conductive filler. The thermally conductive filler may be graphene, which is used to improve the thermal conductivity of the base layer 3 and the top layer 1, accelerating heat transfer from the base layer 3 of the glass fiber speaker diaphragm to the top layer 1 of the glass fiber speaker diaphragm, thereby preventing the glass fiber speaker diaphragm from softening due to local overheating and reducing sound quality. The amount of the thermally conductive filler added is 5% to 20% of the weight of the rubber included in the rubber. When the thermally conductive filler content is less than 5%, the thermally conductive filler cannot form a continuous thermal conductive path in the rubber, resulting in a lack of significant improvement in thermal conductivity. When the thermally conductive filler content is greater than 20%, the thermally conductive filler aggregates in the rubber, forming localized aggregation areas, which reduces thermal conductivity. The vibration area 5 is provided with a thermally conductive coating. The thermally conductive coating may be located on the base layer 3. The thermally conductive coating may be silver paste, which assists in heat conduction. In combination with the thermally conductive filler, it can accelerate the transfer of heat from the base layer 3 to the top layer 1, accelerating heat dissipation. Specifically, the thermally conductive coating increases the heat transfer area and transfers heat to the thermally conductive filler, which then conducts the heat to the external environment, thereby reducing the internal heat of the glass fiber speaker diaphragm and preventing softening of the glass fiber speaker diaphragm due to excessive heat, which could degrade sound quality. The surface of the glass fiber cloth is coated with an antistatic coating. This coating, which can be made of conductive carbon black, covers both surfaces of the glass fiber cloth and prevents static electricity from attracting dust on the surface of the glass fiber speaker diaphragm, preventing dust accumulation and deteriorating sound quality. The edge of the vibration zone 5 is provided with a microporous structure. This microporous structure can be laser-perforated to release air turbulence generated by the vibration of the glass fiber speaker diaphragm, thereby improving sound clarity and responsiveness. The flange structure of the fixing zone 4 has a wavy or serrated cross-section, which increases the contact area during installation and ensures the stability of the glass fiber speaker diaphragm during high-frequency vibration. The glass fiber speaker diaphragm also has a dustproof assembly to prevent dust from adhering to the surface of the glass fiber speaker diaphragm. This dustproof assembly includes a magnet array and a dustproof net. The magnet array may be uniformly distributed magnets, which are used to attract the dustproof net. The dustproof net may have a multi-layer composite structure, for example, a metal wire mesh + nanofiber membrane, and the mesh size may be 20-50 μm, which is used to prevent dust from adhering to the surface of the glass fiber speaker diaphragm. At the same time, it can also maintain the rigidity of the dustproof net and prevent the dustproof net from deformation. The magnet array is evenly embedded in the edge of the fixed area 4. For example, a magnet is embedded every 30°, and a total of 12 magnets are embedded. An arc-shaped surface is provided in the middle of the dustproof net, and the raised part of the arc-shaped surface is away from the vibration area 5, which can prevent the vibration of the vibration area 5 from being affected. A magnetic component array is provided at the edge of the dustproof net. The magnetic component array may be uniformly distributed iron sheets, which are used to attract the magnets in the magnet array. The magnetic component array corresponds to the magnet array. A sealing strip is provided between the dustproof net and the magnet array.The sealing strip may be made of silicone and is used to prevent dust from entering through the gap between the dust screen and the magnet array. The dust screen is detachably connected to the magnet array via the attraction of magnets and iron sheets. The dust screen can be removed and cleaned promptly to prevent clogging of the mesh and deterioration of sound quality.

[0038] The above optional embodiment, as an inventive point of the embodiment of the present disclosure, solves the technical problem that "the speaker diaphragm generates heat during high-frequency vibration, and the heat cannot be dissipated in time, causing the speaker diaphragm to soften, resulting in reduced sound quality." The factors that lead to reduced sound quality are often as follows: the speaker diaphragm generates heat during high-frequency vibration, and the heat cannot be dissipated in time, causing the speaker diaphragm to soften, resulting in reduced sound quality. If the above factors are solved, the effect of improving sound quality can be achieved. In order to achieve this effect, the present disclosure adds thermally conductive fillers to the base layer and top layer of the fiberglass speaker diaphragm, and cooperates with a thermally conductive coating to quickly conduct the heat generated by the fiberglass speaker diaphragm to the external environment, thereby preventing the fiberglass speaker diaphragm from being softened by heat. At the same time, a dustproof component is added to the fiberglass speaker diaphragm to reduce dust adhesion to the surface of the fiberglass speaker diaphragm, so that the fiberglass speaker diaphragm can dissipate heat faster, which can improve sound quality.

[0039] Furthermore, in the process of adopting technical solutions to solve the technical problems mentioned in the background technology, the following problems often arise: the temperature inside the car varies widely. The high temperature in the summer makes the temperature inside the car high, and turning on the air conditioner while driving reduces the temperature. The alternating cold and hot weather can easily cause cracks to appear on the speaker diaphragm of the car audio during use. The cracks cannot be healed, causing the cracks to gradually expand. In response to the problem of gradually expanding cracks, the conventional solution is generally to replace the speaker diaphragm with a new one. However, the above conventional solution still has the following problem: replacing the speaker diaphragm of the car audio with a new one requires disassembling many parts, and the cost of replacing the new speaker diaphragm is relatively high.

[0040] Considering the problems with the aforementioned conventional solutions, and facing the aforementioned technical issue: the speaker diaphragm develops cracks during use, which cannot heal and gradually expand. The inventors, considering the high cost of replacing the speaker diaphragm and the technology available at their organization, have decided to adopt the following solution.

[0041] Optionally, the rubber is added with a first capsule and a second capsule. The first capsule includes a repair agent and a carrier. The repair agent may be a hydrogenated epoxy resin, which is mixed with a curing agent to repair cracks. The carrier may be a high-temperature-resistant porous carrier, used to carry the repair agent. The high-temperature-resistant porous carrier may be porous alumina ceramic microspheres. Specifically, an alumina sol can be spray-dried to produce porous ceramic microspheres, resulting in the porous alumina ceramic microspheres used as the carrier. The carrier is then impregnated with hydrogenated epoxy resin in a vacuum environment to produce a mixed carrier. The mixed carrier is then coated with a silicon carbide layer via chemical vapor deposition to produce a hardened repair agent. Finally, the hardened repair agent is coated with a polydopamine coating to produce the first capsule. The diameter of the first capsule is typically between 30 and 60 μm. This multi-layered protection improves the integrity of the first capsule during die-casting. A first capsule diameter greater than 60 μm can cause a sudden increase in the local stiffness of the glass fiber speaker diaphragm, resulting in sound distortion. A first capsule diameter less than 30 μm can cause the first capsule to rupture during die-casting. The second capsule comprises a curing agent and an outer shell. The curing agent may be a modified imidazole curing agent, which is mixed with the repair agent to repair cracks. The outer shell may be a ceramic shell, such as a silicon carbide-boron nitride ceramic shell, to protect the curing agent. Specifically, the imidazole curing agent can be first dissolved in cyclohexane to produce an oil-phase curing agent. Urea and formaldehyde are then reacted at a pH of 8.5 and 60°C for 30 minutes to produce an aqueous solution. The oil-phase curing agent and the aqueous solution are then mixed in a 1:4 volume ratio and emulsified by high-speed rotation to produce an oil-in-water emulsion. A 10% oxalic acid solution is then added dropwise to the oil-in-water emulsion to adjust the pH to 2.5. The mixture is then heated to 80°C and reacted for 2 hours to produce the modified imidazole curing agent encapsulated in urea-formaldehyde resin microcapsules. Finally, the modified imidazole curing agent encapsulated in the urea-formaldehyde resin microcapsules is first coated with a polydopamine coating and then with a silicon carbide-boron nitride ceramic shell to form a second capsule. The diameter of the second capsule ranges from 5 to 15 μm. This multi-layered protection improves the integrity of the second capsule during die-casting. A second capsule diameter greater than 15 μm slows the diffusion of the curing agent, prolonging the repair time of a cracked glass fiber speaker diaphragm. A second capsule diameter less than 5 μm results in incomplete coating of the ceramic shell, potentially causing the second capsule to crack during die-casting. The first capsule and the second capsule are added to the rubber in a ratio of 3:1 and thoroughly stirred to ensure uniform distribution. A higher ratio of the first capsule reduces the damping of the die-cast glass fiber speaker diaphragm, degrading sound quality. A higher ratio of the second capsule causes the rubber to harden, resulting in high-frequency distortion of the die-cast glass fiber speaker diaphragm.When cracks develop in the fiberglass speaker diaphragm, stress concentrates at the crack during vibration, causing the first and second capsules to rupture. The repair agent and curing agent are mixed to repair the cracks. The repair is complete within 24 hours of mixing the repair agent and curing agent.

[0042] The above optional embodiment, as an inventive point of the embodiment of the present disclosure, solves the technical problem that "cracks will appear on the speaker diaphragm during use, and the cracks cannot be healed, causing the cracks to gradually expand." The factors that cause the cracks to gradually expand are often as follows: cracks will appear on the speaker diaphragm during use, and the cracks cannot be healed, causing the cracks to gradually expand. If the above factors are solved, the effect of reducing the cracks can be achieved. In order to achieve this effect, the present disclosure adds a repairing agent and a fixing agent to the rubber, and uses multiple layers of protection to prevent the repairing agent and the fixing agent from being destroyed during die-casting, so as to repair the cracks and prevent the cracks from gradually expanding.

[0043] The fiberglass speaker diaphragm disclosed herein is enhanced in strength by adding fiberglass cloth to the speaker diaphragm, thereby extending the service life of the speaker diaphragm. Specifically, the reason for the short service life of the speaker diaphragm is that traditional speaker diaphragms are mostly made of a single material, the speaker diaphragm has low strength and a short service life. Based on this, some embodiments of the present disclosure provide a fiberglass speaker diaphragm, the fiberglass speaker diaphragm includes a base layer, a reinforcement layer, and a top layer; the base layer and the top layer include rubber; the reinforcement layer includes fiberglass cloth; the reinforcement layer is located between the base layer and the top layer; the base layer, the reinforcement layer and the top layer are constructed to be integrally formed by die-casting in a mold, wherein the mold includes a base, a limit block and a die-casting part, the base is provided with a cavity array, the cavity array can accommodate the limit block, the limit block is provided with a mold cavity array, and the die-casting part is provided with a top layer array The top layer array corresponds to the mold cavity array; the fiberglass speaker diaphragm comprises a vibrating region and a fixed region; the fixed region surrounds the vibrating region; an isolation groove is provided between the vibrating region and the fixed region; a group of grooves is provided on the surface of the vibrating region, each groove group comprising at least one groove, each groove in the group of grooves being arranged in a predetermined pattern on the surface of the vibrating region; reinforcing ribs are provided on the edge of the vibrating region, located at the junction of the vibrating region and the isolation groove, connecting the vibrating region and the isolation groove; and surrounding the group of grooves. By adding fiberglass cloth to the speaker diaphragm, the strength of the speaker diaphragm is enhanced, thereby extending its service life.

[0044] The above descriptions are merely some preferred embodiments of the present disclosure and illustrate the underlying technical principles. Those skilled in the art should understand that the scope of the invention encompassed by the embodiments of the present disclosure is not limited to technical solutions formed by specific combinations of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the aforementioned inventive concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A glass fiber speaker diaphragm for car audio, characterized in that: The glass fiber speaker diaphragm includes a base layer, a reinforcement layer, and a top layer; The base layer and the top layer comprise rubber; The reinforcement layer comprises glass fiber cloth; The reinforcement layer is located between the base layer and the top layer; The base layer, the reinforcement layer, and the top layer are configured to be integrally formed by die-casting in a mold, wherein the mold includes a base, a stopper, and a die-casting part, the base being provided with a cavity array capable of accommodating the stopper, the stopper being provided with a mold cavity array, and the die-casting part being provided with a top layer array corresponding to the mold cavity array; The fiberglass speaker diaphragm is provided with a vibration area and a fixed area; The fixed area surrounds the vibration area; An isolation groove is provided between the vibration area and the fixed area; The surface of the vibration area is provided with a groove group, the groove group includes at least one groove, and the grooves in the groove group are arranged in a predetermined manner on the surface of the vibration area; A reinforcing rib is provided at the edge of the vibration zone, the reinforcing rib is located at the bordering area between the vibration zone and the isolation groove, and the reinforcing rib connects the vibration zone and the isolation groove; The reinforcing ribs surround the concave groove group.

2. The glass fiber speaker diaphragm for car audio according to claim 1, characterized in that: The weaving method of the glass fiber cloth includes at least one of the following: plain weave and twill weave.

3. The glass fiber speaker diaphragm for car audio according to claim 1, characterized in that: The fixing area is provided with a flange structure.

4. The glass fiber speaker diaphragm for car audio according to claim 3, characterized in that: The thickness of the base layer and the top layer is 0.5-1 mm.

5. The glass fiber speaker diaphragm for car audio according to claim 4, characterized in that: The thickness of the reinforcement layer is 0.05-0.2 mm.

6. The glass fiber speaker diaphragm for vehicle audio according to claim 5, characterized in that: The cross section of the isolation groove is trapezoidal.

7. The glass fiber speaker diaphragm for vehicle audio according to claim 1, characterized in that: The outer surface of the top layer is coated with a hydrophobic coating.

8. The glass fiber speaker diaphragm for vehicle audio according to claim 6, characterized in that: The top width of the isolation groove is 2-3 mm, the bottom width is 1-2 mm, and the groove depth is 0.5-1.5 mm; The inclination angle of the inner wall of the isolation groove is 30°~60°; The inner wall of the isolation groove is provided with a micro-protrusion structure, the height of the micro-protrusion structure is 0.1-0.5 mm, and the spacing is 0.3-1 mm; The inner wall of the isolation tank is covered with a sound-absorbing coating; The bottom of the isolation groove is filled with a buffer material, and the thickness of the buffer material is 0.2-0.5 mm; Conductive filler is added to the buffer material; A chamfered structure is provided at the connection between the top of the isolation groove and the vibration area and the fixing area.

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