Loudspeaker and two-piece drum head

Abstract

The utility model relates to a loudspeaker and two -segment drum paper, loudspeaker includes a frame, a magnetic circuit component, a drive voice coil and a two -segment drum paper, the frame has a top frame and a basin bottom, the magnetic circuit component is installed in the basin bottom, the drive voice coil is set in the basin top, the two -segment drum paper includes a plastic section and a metal section, the plastic section is connected in the top frame of the frame and extends to the basin bottom position, the metal section is connected in the drive voice coil and extends to the top frame position and is combined with the plastic section, and the loudspeaker solves the problem of unstable performance of traditional drum paper from material essence.

Description

Technical Field

[0001] This utility model relates to the field of loudspeakers, and more particularly to a loudspeaker and a two-section drum. Background Technology

[0002] In the field of audio equipment, the speaker diaphragm, as the core component for electroacoustic conversion, directly determines the quality of sound reproduction through its structure and performance. Currently, traditional speaker diaphragms generally adopt an integrated structural design, which has long held a mainstream market position due to its relatively simple molding process and low cost. However, this integrated structure of the diaphragm has many limitations in practical applications and is difficult to meet the increasingly diverse market demands. On the one hand, the integrated diaphragm is constrained by both material properties and molding processes, making it difficult to simultaneously meet the differentiated performance requirements of the diaphragm across different frequency bands. For example, in the low-frequency range, the diaphragm needs to have good flexibility and large amplitude driving capability, while in the mid-to-high frequency range, more emphasis is placed on the rigidity and transient response speed of the diaphragm. The integrated diaphragm, with its single material and structure, can hardly meet these characteristics, resulting in defects in sound quality. On the other hand, once a part of the integrated diaphragm is damaged, it often needs to be replaced entirely, which is costly and inconvenient to repair, and also hinders the recycling and reuse of materials. Furthermore, due to fluctuations in process parameters and the dispersion of material properties during production, the acoustic performance consistency of integrated drum paper is poor, making it difficult to meet the stringent requirements of high-end audio systems, in-vehicle audio systems, professional monitoring equipment, and other application scenarios that demand sound stability.

[0003] With the rapid development of consumer electronics, smart homes, and the professional audio industry, the market has placed higher demands on the acoustic performance, ease of maintenance, and material sustainability of speaker diaphragms. Traditional integrated diaphragm structures are no longer sufficient to meet the industry's upgrading needs, necessitating innovative designs and the development of new diaphragm structures to satisfy diverse application scenarios and drive audio equipment towards high fidelity, standardization, and sustainability. Utility Model Content

[0004] Another advantage of this invention is that it provides a loudspeaker and a two-section drum paper. The loudspeaker can eliminate the influence of pulp quality fluctuations, ensure that the acoustic performance of different batches of drum paper is highly consistent, and improve the product yield and acoustic stability.

[0005] One advantage of this invention is that it provides a loudspeaker and a two-section drum, the loudspeaker has a better high-frequency curve, and the drum rigidity is strengthened by the support portion to obtain a better high-frequency curve.

[0006] Another advantage of this invention is that it provides a loudspeaker and a two-section drum, the loudspeaker being highly adaptable to the environment and applicable to a wide range of scenarios.

[0007] Another advantage of this utility model is that it provides a speaker and a two-section drum, the speaker has a richer appearance design, the plastic section can be selected in color, supports customized appearance, and meets high-end and personalized needs.

[0008] According to another aspect of the present invention, the present invention further provides a loudspeaker, the loudspeaker comprising:

[0009] A frame having a top frame and a bottom;

[0010] A magnetic circuit assembly, the magnetic circuit assembly being installed at the bottom of the basin;

[0011] A driving voice coil, the driving voice coil being disposed above the cone bottom; and

[0012] A two-section phono preamp, comprising a plastic section and a metal section, wherein the plastic section is connected to the top frame of the frame and extends toward the bottom of the cone, and the metal section is connected to the drive voice coil and extends toward the top frame and is combined with the plastic section.

[0013] According to one embodiment of the present invention, the metal segment includes a voice coil connecting portion, a support portion, and a plastic layer connecting portion. The voice coil connecting portion is connected to the driving voice coil around the support portion on one side and the plastic layer connecting portion around the support portion on the other side.

[0014] According to one embodiment of the present invention, the plastic segment includes a metal layer connecting portion and a main body portion. The metal layer connecting portion is connected around the plastic layer connecting portion, and one side of the main body portion is connected around the metal layer connecting portion, while the other side is connected around the top frame.

[0015] According to one embodiment of the present invention, the two-section drum paper further includes an elastic connecting edge, one side of which is connected to the plastic section and the other side is connected to the top frame.

[0016] According to one embodiment of the present invention, the plastic segment includes a metal layer connecting portion, a main body portion, and an elastic connecting portion. The metal layer connecting portion surrounds and connects to the plastic layer connecting portion. One side of the main body portion surrounds and connects to the metal layer connecting portion, and the other side surrounds and connects to the elastic connecting portion. The elastic connecting portion surrounds and connects to the elastic connecting edge to connect the plastic segment to the top frame.

[0017] According to one embodiment of the present invention, the outer edge of the elastic connecting edge forms a frame connecting edge, the inner edge of the elastic connecting edge forms a plastic segment connecting edge, the frame connecting edge is connected to the top frame, and the plastic segment connecting edge is connected to the elastic connecting part.

[0018] According to one embodiment of the present invention, the plastic layer connecting part and the metal layer connecting part are integrally formed by an injection molding process.

[0019] According to one embodiment of the present invention, the elastic connecting part and the plastic segment connecting edge are integrally formed by injection molding.

[0020] According to one embodiment of the present invention, the metal segment is made of one of aluminum, titanium, and aluminum-magnesium alloy.

[0021] According to one embodiment of the present invention, the plastic segment is made of PP plastic.

[0022] According to another aspect of the present invention, a two-section drum diaphragm is further provided, suitable for mounting within a frame of a loudspeaker, the loudspeaker further comprising a driving voice coil, the frame having a top frame and a cone bottom, the driving voice coil being disposed in the cone bottom, including:

[0023] A plastic segment, the plastic segment extending around and connected to the top frame toward the bottom of the basin; and

[0024] A metal segment extends around the drive voice coil toward the top frame and is integrally formed with the plastic segment.

[0025] The further objectives and advantages of this invention will become fully apparent from the following description and accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a partial cross-sectional view of a loudspeaker according to a preferred embodiment of the present invention.

[0027] Figure 2 This is an exploded structural diagram of a loudspeaker according to a preferred embodiment of the present invention.

[0028] Figure 3 This is an enlarged cross-sectional view of a two-section diaphragm of a loudspeaker according to a preferred embodiment of the present invention. Detailed Implementation

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0030] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0031] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0032] Reference Appendix Figure 1 To be continued Figure 3 As shown, a preferred embodiment of the loudspeaker 1 of the present invention is illustrated. The loudspeaker 1 includes a frame 10, a two-section diaphragm 20, a magnetic circuit assembly 30, and a driving voice coil 40. The magnetic circuit assembly 30 is installed in the frame 10, and the driving voice coil 40 is located in the magnetic field of the magnetic circuit assembly 30. One side of the two-section diaphragm 20 is connected to the frame 10, and the other side is connected to the driving voice coil 40. When the driving voice coil 40 receives an input response audio signal, it drives the two-section diaphragm 20 to reciprocate, thereby radiating sound waves outward.

[0033] The two-section diaphragm 20 further includes a plastic section 21 and a metal section 22. The metal section 22 is close to the driving voice coil 40, and the plastic section 21 is away from the driving voice coil 40. Because the materials used in the two-section diaphragm 20 differ from those used in traditional diaphragm pulp, it is more susceptible to fluctuations in pulp quality, leading to unstable acoustic performance. However, thanks to the stable material properties of the plastic section 21 and the metal section 22, the two-section diaphragm 20 ensures highly consistent acoustic performance across different batches, significantly improving product yield and acoustic stability. In terms of environmental adaptability, the two-section diaphragm 20 combines the characteristics of both metal and plastic, possessing excellent temperature and moisture resistance. Even in extreme environments, it maintains a stable structure and superior acoustic performance, thus expanding the product's application scenarios. From a manufacturing perspective, the two-section diaphragm 20 employs an injection molding process. Through precise mold design and parameter control, the shape, size, and material distribution of the diaphragm can be accurately controlled. This production method effectively reduces the interference of human factors and environmental variables on product quality, facilitates automated and standardized mass production, greatly improves production efficiency and product quality controllability, and further stabilizes the acoustic performance of the two-section diaphragm 20.

[0034] In detail, the frame 10 has a top frame 11 with a circular opening and a basin bottom 12 formed by recessing inward from the frame 10. The top frame 11 is the upper end of the frame 10, and the basin bottom 12 is the lower end of the frame 11.

[0035] The magnetic circuit assembly 30 is installed in the recessed space of the basin bottom 12, and the driving voice coil 40 is disposed within the magnetic field range of the magnetic circuit assembly 30 and close to the basin bottom 12.

[0036] Specifically, the two-section drum 20 includes a plastic section 21, a metal section 22, and an elastic connecting edge 23. One side of the metal section 22 is connected to the peripheral wall of the driving voice coil 40, and the plastic section 21 is integrally connected to the other side of the metal section 22. One side of the elastic connecting edge 23 is connected to the top frame 11, and the other side is connected to the plastic section 21, so that the plastic section 21 and the metal section 22 can reciprocate under the drive of the driving voice coil 40 and are restricted by the elastic connecting edge 23.

[0037] The metal segment 22 includes a voice coil connector 221, a support portion 222, and a plastic layer connector 223. The voice coil connector 221 is connected to the peripheral wall of the driving voice coil 40. One side of the support portion 222 is connected to the voice coil connector 221, and the other side is connected to the plastic layer connector 223. In other words, the voice coil connector 221, the support portion 222, and the plastic layer connector 223 are integrally manufactured. The cross-section of the support portion 222 is curved, and the voice coil connector 221 and the plastic layer connector 223 are located at opposite ends of the curve. When the driving voice coil 40 is driven by the magnetic circuit assembly 20, the two-section diaphragm 20 will be driven synchronously, thereby radiating sound waves outward. The metal section 22 will also move accordingly. Since the support part 222 is closer to the driving voice coil 40, the rigidity of this part is stronger. Therefore, it can effectively suppress deformation during high-frequency vibration. Compared with the traditional paper cone, after adopting this structure of the metal section 22, the high-frequency sound curve of the speaker 1 is smoother and the distortion is smaller, which can significantly improve the clarity and detail reproduction of the sound quality.

[0038] The plastic segment 21 includes a metal layer connecting portion 213, a main body portion 212, and an elastic connecting portion 211. The metal layer connecting portion 213 is connected to the plastic layer connecting portion 213 of the metal segment 22. One side of the main body portion 212 is connected to the metal layer connecting portion 213, and the other side is connected to the elastic connecting portion 211. The elastic connecting portion 211 is connected to the elastic connecting edge 23 to connect the plastic segment 21 to the top frame 11. It is worth mentioning that the metal layer connecting portion 213, the main body portion 212, and the elastic connecting portion 211 are integrally manufactured. Specifically, the metal layer connecting portion 213 is connected to the plastic layer connecting portion 223 of the metal segment 22 by an injection molding process. In the position where the metal layer connecting portion 213 is connected to the plastic layer connecting portion 223, the metal segment 22 is first fixed in an appropriate position in the injection mold, and then plastic is injected to form the plastic segment 21. After the mold is opened, the metal segment 22 is tightly fixed by the cooled and solidified plastic segment 21. The fixed position is where the metal layer connecting portion 213 is connected to the plastic layer connecting portion 223.

[0039] It is understood that the high-strength mechanical connection formed between the plastic segment 21 and the metal segment 22, where the plastic segment 21 melts and fills the micropores on the surface of the plastic layer connection portion 223 of the metal segment 22, forms a "mechanical interlocking" effect after cooling and solidification. The bonding strength is significantly higher than that of traditional riveting or adhesive bonding. At the same time, there is no stress concentration between the metal layer connection portion 213 of the plastic segment 21 and the plastic layer connection portion 223 of the metal segment 22. During the injection molding process, the plastic segment 21 uniformly connects to the metal segment 22, eliminating local stress caused by uneven adhesive thickness. This is especially suitable for scenarios with high fatigue resistance requirements in vibration environments.

[0040] The plastic segment 21 is generally layered, and the metal segment 22 is also layered. The metal layer connecting portion 213 is connected around the plastic layer connecting portion 223. The connection order of the plastic segment 21 to the metal segment 22 can be that the plastic segment 21 is on top of the metal segment 22, or the metal segment 22 is on top of the plastic segment 21. In other embodiments of this utility model, the plastic segment 21 can also be located in the middle of the layers of the metal segment 22, or the metal segment 22 can be located in the middle of the layers of the plastic segment 21. Those skilled in the art should understand that the physical connection method of the plastic segment 21 to the metal segment 22 is not a limitation of this invention. The fixing structure of the plastic segment 21 to the metal segment 22 can also be implemented in other fixing methods, including but not limited to the methods listed above.

[0041] The outer edge of the elastic connecting edge 23 forms a frame connecting edge 231, and the inner edge of the elastic connecting edge 23 forms a plastic segment connecting edge 232. The frame connecting edge 231 surrounds and connects to the top frame 11, and the plastic segment connecting edge 232 surrounds and connects to the elastic connecting portion 211 of the plastic segment 21. Specifically, the connection method of the plastic segment connecting edge 232 surrounding and connecting to the elastic connecting portion 211 of the plastic segment 21 preferably uses an integral injection molding process. This involves injecting the plastic used to make the elastic connecting edge 23 and the plastic used to make the plastic segment 21 into the same mold cavity sequentially or simultaneously using two injection molding machines, thus forming a single integral bond within the mold. By utilizing the melting characteristics and interfacial adhesion of the materials, the two plastic materials are molded as a single unit, avoiding the cumbersome steps of traditional assembly processes and optimizing the overall structural stability.

[0042] Driven by the voice coil 40, the reciprocating motion of the two-section diaphragm 20 causes the elastic connecting edge 23 to vibrate at high frequencies. Through integrated injection molding technology, the elastic connecting edge 23 and the plastic of the elastic connecting part 211 form a molecular-level bond, eliminating connection gaps and stress concentration points. This ensures that the two always move synchronously under high amplitude and high frequency vibration, significantly reducing the risk of structural failure and extending the service life of the speaker 1. The main function of the elastic connecting edge 23 is to support the two-section diaphragm 20 and provide appropriate elasticity to ensure accurate sound reproduction. The integrated injection molding process can precisely control the distribution and structural parameters of the plastic material of the elastic connecting edge 23, optimizing its compliance and damping characteristics, reducing resonance and nonlinear distortion during the vibration of the two-section diaphragm 20, and maintaining a stable sound output curve. Furthermore, the integrated structure of the plastic injection molding process has strong sealing properties, and the plastic material is temperature-resistant and corrosion-resistant, effectively resisting external erosion and ensuring that the elastic connecting edge 23 maintains its elasticity and toughness even under extreme conditions, guaranteeing stable sound output.

[0043] The preferred materials for manufacturing the metal segment 21 are aluminum, titanium, or aluminum-magnesium alloys. Aluminum, titanium, and aluminum-magnesium alloys have excellent hot working properties, making it easy to pre-form the metal segment 21 through die casting, stamping, or other methods. Taking die casting as an example, molten aluminum can quickly fill complex mold cavities at relatively low temperatures and pressures to form the metal segment 21 with high forming precision. Simultaneously, aluminum, titanium, and aluminum-magnesium alloys have high specific strength, providing lightweight yet robust support for the two-section drum paper 20, reducing vibration inertia, and making the high-frequency response more sensitive. It should be noted that other metallic materials can also be used to manufacture the metal segment 21, and are not limited to those listed above.

[0044] In this embodiment, PP plastic is preferably used for the plastic segment 21. PP plastic has a density approximately one-third that of aluminum, which significantly reduces the overall weight of the two-section diaphragm 20 and lowers the inertial load during vibration. The two-section diaphragm 20 needs to withstand high-frequency reciprocating stress during long-term vibration operation, and PP plastic has excellent fatigue crack resistance, making it less prone to plastic deformation or fracture due to long-term vibration. This makes it particularly suitable for the continuous operation of high-frequency loudspeakers, reducing sound distortion. Simultaneously, PP plastic has strong resistance to water, water vapor, weak acids and alkalis, and its performance is not easily affected by humid environments or slightly corrosive gases, extending the service life of the two-section diaphragm 20. It can also adapt to the operating environment of most loudspeakers, avoiding structural failure due to high-temperature softening or low-temperature embrittlement. Furthermore, the plastic segment 21 offers a wide range of color options, supporting customized color schemes and surface treatment processes, meeting the demand for personalized and high-end appearances in consumer electronics products and enhancing the product's market competitiveness. It should be noted that other plastic materials can also be used for the plastic segment 21, and it is not limited to the materials listed above.

[0045] The two-section diaphragm 20 employs an integrated metal and plastic molding process, fundamentally solving the problem of unstable performance in traditional diaphragms. This innovative structure significantly improves the uniformity of the diaphragm material, completely eliminating the impact of pulp quality fluctuations on acoustic performance. This ensures high consistency in core acoustic indicators such as frequency response curves and sensitivity across different batches, effectively improving the yield and acoustic stability of the speaker 1. Regarding environmental adaptability, the two-section diaphragm 20 overcomes the limitations of paper materials, which are susceptible to moisture deformation and high-temperature embrittlement. Thanks to the composite properties of metal and plastic, it maintains structural integrity and stable acoustic performance even in harsh environments such as high humidity and extreme temperatures, greatly expanding the speaker's application scenarios. In the manufacturing process, the two-section diaphragm 20 utilizes an injection molding process, achieving high-precision, standardized production. Through precise control of mold design and process parameters, the geometry, dimensional tolerances, and material distribution of the two-section diaphragm 20 can be accurately controlled, effectively reducing interference from human operation and environmental factors. This lays a solid foundation for large-scale automated production and significantly improves the acoustic performance of the speaker 1.

[0046] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A loudspeaker, characterized in that, include: A frame having a top frame and a bottom; A magnetic circuit assembly, the magnetic circuit assembly being installed at the bottom of the basin; A driving voice coil is disposed above the bottom of the cone; and A two-section phono preamp, comprising a plastic section and a metal section, wherein the plastic section is connected to the top frame of the frame and extends toward the bottom of the cone, and the metal section is connected to the drive voice coil and extends toward the top frame and is combined with the plastic section.

2. The loudspeaker according to claim 1, wherein the metal segment includes a voice coil connecting portion, a support portion, and a plastic layer connecting portion, the voice coil connecting portion surrounding and connecting the driving voice coil, the support portion surrounding and connecting the voice coil connecting portion on one side, and surrounding and connecting the plastic layer connecting portion on the other side.

3. The loudspeaker according to claim 2, wherein the plastic segment includes a metal layer connecting portion and a main body portion, the metal layer connecting portion surrounding and connecting the plastic layer connecting portion, the main body portion surrounding and connecting the metal layer connecting portion on one side, and surrounding and connecting the top frame on the other side.

4. The loudspeaker according to claim 2, wherein the two-section diaphragm further includes an elastic connecting edge, one side of which is connected to the plastic section and the other side is connected to the top frame.

5. The loudspeaker of claim 4, wherein the plastic segment includes a metal layer connecting portion, a main body portion, and an elastic connecting portion, the metal layer connecting portion surrounding the plastic layer connecting portion, the main body portion surrounding the metal layer connecting portion on one side and surrounding the elastic connecting portion on the other side, the elastic connecting portion surrounding the elastic connecting edge to connect the plastic segment to the top frame.

6. The loudspeaker according to claim 5, wherein the outer edge of the elastic connecting edge forms a frame connecting edge, the inner edge of the elastic connecting edge forms a plastic segment connecting edge, the frame connecting edge is circumferentially connected to the top frame, and the plastic segment connecting edge is circumferentially connected to the elastic connecting portion.

7. The loudspeaker according to claim 6, wherein the plastic layer connection portion and the metal layer connection portion are integrally formed by an injection molding process.

8. The loudspeaker according to claim 6, wherein the elastic connecting portion and the plastic segment connecting edge are integrally formed by injection molding.

9. The loudspeaker according to any one of claims 1 to 8, wherein the metal segment is made of one of aluminum, titanium, and aluminum-magnesium alloy.

10. The loudspeaker according to any one of claims 1 to 8, wherein the plastic segment is made of PP plastic.

11. A two-section diaphragm, suitable for mounting within a frame of a loudspeaker, the loudspeaker further comprising a driving voice coil, the frame having a top frame and a cone bottom, the driving voice coil being disposed at the cone bottom, characterized in that, include: A plastic segment, which is connected to the top frame and extends toward the bottom of the basin; and A metal segment extends around the drive voice coil toward the top frame and is integrally formed with the plastic segment.

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