Coaxial dual magnetic dual-cone loudspeaker

Abstract

The utility model relates to loudspeaker technical field especially is a kind of coaxial double-magnetic double-moving-coil loudspeaker, including upper tuning net, upper core, upper magnet, upper hua si, PCB board, upper basin stand, upper voice coil, bass diaphragm, lower tuning net, lower core, lower magnet, lower hua si, lower basin stand, lower voice coil and tweeter. The coaxial double-magnetic double-moving-coil loudspeaker provided by the utility model solves the problems of insufficient high pitch, narrow sound field, low sensitivity and poor high-frequency extensibility of the loudspeaker in the prior art, and has the advantages of high resolution, high extensibility, wide sound field and high sensitivity. While solving the technical problem, the utility model also realizes low production cost, simple assembly, high production efficiency, high product qualification rate, excellent acoustic performance and wide application prospect.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a coaxial dual-magnet dual-dynamic loudspeaker. Background Technology

[0002] As living standards improve, people's demands for sound quality are also increasing. With the emergence and development of digital audio sources and playback devices, wider frequency bands, lower distortion, greater dynamic range, and higher volume have become essential requirements. Traditionally, headphones on the market have sacrificed treble frequencies to emphasize bass, resulting in higher distortion and poorer compliance. To address this issue, improvements need to be made to the speaker itself. Traditionally, this has been achieved by modifying materials, but with limited success.

[0003] To address the issues of narrow bandwidth, insufficient sound field, high distortion, and low volume, the inventor aims to design a coaxial dual-magnet dual-dynamic loudspeaker that, while maintaining sound quality, also improves the loudspeaker's sensitivity to meet consumer demands. Utility Model Content

[0004] The purpose of this invention is to overcome the problems existing in the prior art and provide a coaxial dual-magnet dual-moving-coil loudspeaker. The dual-magnet dual-voice-coil design extends the effective frequency band of the loudspeaker to higher frequencies, improving the speaker's sensitivity while ensuring sound quality, thus meeting consumer requirements.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution: This utility model provides a coaxial dual-magnet dual-dynamic loudspeaker, including an upper tuning grille, an upper iron core, an upper magnet, an upper washer, a PCB board, an upper frame, an upper voice coil, a woofer diaphragm, a lower tuning grille, a lower iron core, a lower magnet, a lower washer, a lower frame, a lower voice coil, and a tweeter diaphragm. The upper and lower frames are interlocked. The PCB board, upper washer, upper magnet, upper iron core, and upper tuning grille are sequentially installed on the upper side of the upper frame from the inside out. The upper voice coil, woofer diaphragm, lower tuning grille, lower iron core, lower magnet, and lower washer are sequentially clamped and installed between the upper and lower frames. The lower voice coil and tweeter diaphragm are sequentially installed on the lower side of the lower frame from the inside out.

[0006] Furthermore, in the aforementioned coaxial dual-magnet dual-dynamic-coil loudspeaker, the upper frame includes an upper frame body, the upper end of which is provided with an upper retaining ring for easy snapping and installation of the upper tuning grille, the inner diameter of the upper retaining ring being matched with the outer diameter of the upper iron core, and the lower end of the upper frame body is provided with a lower retaining ring, the lower retaining ring having a positioning notch.

[0007] Furthermore, in the aforementioned coaxial dual-magnet dual-dynamic-coil loudspeaker, the lower frame includes a rim portion, a hub portion, and a spoke portion. Several spoke portions are installed between the rim portion and the hub portion. The upper side of the hub portion is provided with several stepped rings that facilitate concentric engagement of the lower core, lower magnet, and lower washer. The upper side of the rim portion is provided with an inwardly opening slot that mates with the lower retaining ring. The interior of the hub portion is provided with a groove for installing the lower voice coil.

[0008] Furthermore, in the aforementioned coaxial dual-magnet dual-dynamic loudspeaker, the upper voice coil and the woofer diaphragm cooperate with each other, the voice coil wire of the upper voice coil is made of oxygen-free copper wire, and the woofer diaphragm is made of polyethylene terephthalate.

[0009] Furthermore, in the aforementioned coaxial dual-magnet dual-moving-coil loudspeaker, the lower voice coil and the tweeter diaphragm cooperate with each other, the voice coil wire of the lower voice coil is made of copper-clad aluminum wire, and the tweeter diaphragm is made of ethyl 2-6 naphthalenedicarboxylate.

[0010] Furthermore, in the aforementioned coaxial dual-magnet dual-dynamic loudspeaker, the upper magnet is a strong magnetic magnet, and the lower magnet is a weak magnetic magnet, and the upper and lower magnets can attract each other.

[0011] Furthermore, in the aforementioned coaxial dual-magnet dual-dynamic-coil loudspeaker, the upper iron core, upper washer, and upper magnet combine to form an upper magnetic circuit. The magnetic field generated by the upper magnet is focused by the upper washer to form an upper air gap. The upper washer is fixedly connected to the upper frame. The upper voice coil is embedded in the upper air gap of the upper magnetic circuit and rigidly connected to the bass diaphragm. When current passes through the upper voice coil, it drives the bass diaphragm to vibrate and produce sound under the action of the magnetic field. The lower iron core, together with the lower washer and the lower magnet, forms the lower magnetic circuit. The magnetic field generated by the lower magnet is focused by the lower washer to form the lower air gap. The upper washer is fixedly connected to the upper frame. The lower voice coil is embedded in the lower air gap of the lower magnetic circuit and is rigidly connected to the tweeter diaphragm. When current passes through the lower voice coil, the tweeter diaphragm vibrates and produces sound under the action of the magnetic field.

[0012] Furthermore, in the aforementioned coaxial dual-magnet dual-dynamic-coil loudspeaker, the PCB board is electrically connected to the upper and lower voice coils via soldering or spring contacts, and is responsible for signal transmission.

[0013] The beneficial effects of this utility model are: 1. This utility model adopts a dual-magnet dual-voice-coil design, which extends the effective frequency band of the speaker to higher frequencies, improving the speaker's sensitivity while ensuring sound quality, thus meeting consumer requirements.

[0014] 2. The coaxial dual-magnet dual-moving-coil loudspeaker provided by this utility model has low production cost, simple and easy assembly, high production efficiency, high finished product qualification rate, and excellent acoustic performance, and has broad application prospects.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an exploded view of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention from one angle; Figure 3 This is a structural schematic diagram of the entire utility model from another angle; Figure 4 This is a schematic diagram of the upper basin stand in this utility model; Figure 5 This is a schematic diagram of the structure of the mid-to-low frequency diaphragm of this utility model; Figure 6 This is a schematic diagram of the structure of the lower basin stand in this utility model; Figure 7 This is a schematic diagram of the structure of the high-frequency diaphragm of this utility model; In the attached diagram, the components represented by each number are as follows: 1-Upper tuning grille, 2-Upper iron core, 3-Upper magnet, 4-Upper washer, 5-PCB board, 6-Upper frame, 601-Upper frame body, 602-Upper retaining ring, 603-Lower retaining ring, 7-Upper voice coil, 8-Wave diaphragm, 9-Lower tuning grille, 10-Lower iron core, 11-Lower magnet, 12-Lower washer, 13-Lower frame, 131-Rim section, 132-Hub section, 133-Spoke section, 134-Step ring, 135-Open slot, 14-Lower voice coil, 15-Tweeter diaphragm. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1-7As shown, this embodiment provides a coaxial dual-magnet dual-dynamic-coil loudspeaker, characterized by comprising an upper tuning grille 1, an upper iron core 2, an upper magnet 3, an upper washer 4, a PCB board 5, an upper frame 6, an upper voice coil 7, a woofer diaphragm 8, a lower tuning grille 9, a lower iron core 10, a lower magnet 11, a lower washer 12, a lower frame 13, a lower voice coil 14, and a tweeter diaphragm 15. The upper frame 6 and the lower frame 13 are interlocked. The PCB board 5, the upper washer 4, the upper magnet 3, the upper iron core 2, and the upper tuning grille 1 are sequentially installed on the upper side of the upper frame 6 from the inside out. The upper voice coil 7, the woofer diaphragm 8, the lower tuning grille 9, the lower iron core 10, the lower magnet 11, and the lower washer 12 are sequentially clamped between the upper frame 6 and the lower frame 13. The lower voice coil 14 and the tweeter diaphragm 15 are sequentially installed on the lower side of the lower frame 13 from the inside out.

[0020] In this embodiment, the upper basin stand 6 includes an upper basin stand body 601. The upper end of the upper basin stand body 601 is provided with an upper retaining ring 602 for easy snapping and installation of the upper tuning mesh 1. The inner diameter of the upper retaining ring 602 is matched with the outer diameter of the upper iron core 2. The lower end of the upper basin stand body 601 is provided with a lower retaining ring 603, and a positioning notch is provided on the lower retaining ring 603.

[0021] In this embodiment, the lower frame 13 includes a rim portion 131, a hub portion 132, and a spoke portion 133. A plurality of spoke portions 133 are installed between the rim portion 131 and the hub portion 132. The upper side of the hub portion 132 is provided with a plurality of stepped rings 134 for concentrically engaging the lower iron core 10, the lower magnet 11, and the lower washer 12. The upper side of the rim portion 131 is provided with an inwardly opening slot 135 that engages with the lower retaining ring 603. The interior of the hub portion 132 is provided with a groove for installing the lower voice coil 14.

[0022] In this embodiment, the upper voice coil 7 and the bass diaphragm 8 cooperate with each other. The voice coil wire of the upper voice coil 7 is made of oxygen-free copper wire, and the bass diaphragm 8 is made of polyethylene terephthalate.

[0023] In this embodiment, the lower voice coil 14 and the tweeter diaphragm 15 cooperate with each other. The voice coil wire of the lower voice coil 14 is made of copper-clad aluminum wire, and the tweeter diaphragm 15 is made of ethyl 2-6 naphthalenedicarboxylate.

[0024] In this embodiment, the upper magnet 3 is a strong magnetic magnet, and the lower magnet 11 is a weak magnetic magnet. The upper magnet 3 and the lower magnet 11 can attract each other.

[0025] In this embodiment, the upper iron core 2, the upper washer 4, and the upper magnet 3 are combined to form an upper magnetic circuit. The magnetic field generated by the upper magnet 3 is focused by the upper washer 4 to form an upper air gap. The upper washer 4 is fixedly connected to the upper frame 6. The upper voice coil 7 is embedded in the upper air gap of the upper magnetic circuit and is rigidly connected to the bass diaphragm 8. When current passes through the upper voice coil 7, the bass diaphragm 8 is driven to vibrate and produce sound under the action of the magnetic field.

[0026] The lower iron core 10, together with the lower washer 12 and the lower magnet 11, forms the lower magnetic circuit. The magnetic field generated by the lower magnet 11 is focused by the lower washer 12 to form the lower air gap. The upper washer 4 is fixedly connected to the upper frame 6. The lower voice coil 14 is embedded in the lower air gap of the lower magnetic circuit and is rigidly connected to the tweeter diaphragm 15. When current passes through the lower voice coil 14, it drives the tweeter diaphragm 15 to vibrate and produce sound under the action of the magnetic field.

[0027] In this embodiment, the PCB board 5 is electrically connected to the upper voice coil 7 and the lower voice coil 14 by soldering or spring contacts, and is responsible for signal transmission.

[0028] One specific application of this embodiment is as follows: This loudspeaker includes dual magnets, dual washer, dual frames, dual diaphragms, and dual voice coils. The upper and lower frames are fitted together to complete the assembly of the product. The dual diaphragms have two diaphragms, one large and one small. The larger diaphragm is called the woofer diaphragm 8, and the smaller diaphragm is called the tweeter diaphragm 15.

[0029] The bass diaphragm 8 is made of polyethylene terephthalate, which has the characteristics of certain elasticity, wear resistance, moisture resistance, uniform thickness, and good bass effect; its disadvantage is that it has poor rigidity and insufficient high-frequency extension.

[0030] The tweeter diaphragm 15 is made of ethyl 2-6-naphthalenedicarboxylate, a material characterized by low density, high rigidity, high elastic modulus, high temperature resistance, and high tensile strength. Furthermore, to further improve performance, this material can be electroplated with metal-ceramic particles. The core characteristics of ceramic tweeters are high rigidity and lightweight: the electroplated ceramic material exhibits extremely high rigidity (high Young's modulus) while maintaining low density, effectively reducing diaphragm splitting distortion and ensuring fast and accurate high-frequency response. Advantages in high resolution and transient response: The diaphragm's high rigidity provides excellent reproduction of subtle signals, making it suitable for high-frequency performance. Advantages in high-temperature resistance and stability: Ceramic is heat-resistant and not easily affected by humidity, making it suitable for high-power or long-term operating environments. The upper voice coil (7) uses oxygen-free copper wire to reduce distortion and improve sound quality, emphasizing the bass. However, this emphasis on bass comes at the cost of lower treble, which needs to be compensated for. The lower voice coil (14) uses copper-clad aluminum wire, meaning the core of the conductor is aluminum, covered with a copper film. Copper-clad aluminum wire has properties between aluminum and copper, with a density 12% lower than copper wire, approximately 38% that of pure copper wire. It also has higher conductivity and tensile strength than aluminum wire, exceeding that of aluminum by several times. The advantages of using copper-clad aluminum wire include a wide frequency response and rich treble.

[0031] The lower magnet 11 in the lower tweeter unit is a weak magnetic magnet, which facilitates attraction with the strong magnetic magnet of the bass unit; the upper magnet 3 in the upper woofer unit is a strong magnetic magnet, which facilitates sound output.

[0032] The coaxial dual-magnet dual-dynamic-coil loudspeaker provided by this utility model solves the problems of insufficient treble, narrow sound field, low sensitivity, and poor high-frequency extension in existing loudspeakers. The coaxial dual-magnet dual-dynamic-coil loudspeaker provided by this utility model has the advantages of high resolution, high extension, wide sound field, and high sensitivity. While solving technical problems, it also achieves low production cost, simple and easy assembly, high production efficiency, high finished product qualification rate, and excellent acoustic performance, and has broad application prospects.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A coaxial dual-magnet dual-moving-coil loudspeaker, characterized in that, The device includes an upper tuning grille, an upper iron core, an upper magnet, an upper washer, a PCB board, an upper frame, an upper voice coil, a woofer diaphragm, a lower tuning grille, a lower iron core, a lower magnet, a lower washer, a lower frame, a lower voice coil, and a tweeter diaphragm. The upper and lower frames are interlocked. The upper frame has the PCB board, upper washer, upper magnet, upper iron core, and upper tuning grille installed sequentially from the inside out. The upper and lower frames are clamped together and installed sequentially. The lower frame has the lower voice coil and tweeter diaphragm installed sequentially from the inside out.

2. The coaxial dual-magnet dual-moving-coil loudspeaker according to claim 1, characterized in that, The upper basin frame includes an upper basin frame body. The upper end of the upper basin frame body is provided with an upper retaining ring for easy snapping and installation of the upper tuning mesh. The inner diameter of the upper retaining ring matches the outer diameter of the upper iron core. The lower end of the upper basin frame body is provided with a lower retaining ring, and the lower retaining ring has a positioning notch.

3. The coaxial dual-magnet dual-moving-coil loudspeaker according to claim 2, characterized in that, The lower frame includes a rim section, a hub section, and a spoke section. Several spoke sections are installed between the rim section and the hub section. Several stepped rings are provided on the upper side of the hub section to facilitate concentric engagement of the lower core, lower magnet, and lower washer. An inwardly opening groove is provided on the upper side of the rim section to cooperate with the lower retaining ring. A groove for installing the lower voice coil is provided inside the hub section.

4. The coaxial dual-magnet dual-moving-coil loudspeaker according to claim 3, characterized in that, The upper voice coil and the bass diaphragm work together. The voice coil wire of the upper voice coil is made of oxygen-free copper wire, and the bass diaphragm is made of polyethylene terephthalate.

5. The coaxial dual-magnet dual-moving-coil loudspeaker according to claim 4, characterized in that, The lower voice coil and the tweeter diaphragm work together. The voice coil wire of the lower voice coil is made of copper-clad aluminum wire, and the tweeter diaphragm is made of ethyl 2-6 naphthalenedicarboxylate.

6. The coaxial dual-magnet dual-moving-coil loudspeaker according to claim 5, characterized in that, The upper magnet is a strong magnetic magnet, and the lower magnet is a weak magnetic magnet. The upper and lower magnets are able to attract each other.

7. The coaxial dual-magnet dual-moving-coil loudspeaker according to claim 6, characterized in that, The upper iron core, together with the upper washer and the upper magnet, forms the upper magnetic circuit. The magnetic field generated by the upper magnet is focused by the upper washer to form the upper air gap. The upper washer is fixedly connected to the upper frame. The upper voice coil is embedded in the upper air gap of the upper magnetic circuit and is rigidly connected to the bass diaphragm. When current passes through the upper voice coil, it drives the bass diaphragm to vibrate and produce sound under the action of the magnetic field. The lower iron core, together with the lower washer and the lower magnet, forms the lower magnetic circuit. The magnetic field generated by the lower magnet is focused by the lower washer to form the lower air gap. The upper washer is fixedly connected to the upper frame. The lower voice coil is embedded in the lower air gap of the lower magnetic circuit and is rigidly connected to the tweeter diaphragm. When current passes through the lower voice coil, the tweeter diaphragm vibrates and produces sound under the action of the magnetic field.

8. The coaxial dual-magnet dual-moving-coil loudspeaker according to claim 7, characterized in that, The PCB board is electrically connected to the upper and lower voice coils via soldering or spring contacts, and is responsible for signal transmission.

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