Large aperture binaural loudspeaker

Abstract

The utility model relates to loudspeaker technical field especially a kind of large-caliber double-sided loudspeaker, including the support one and support two of mutual laminated arrangement, support one and support two between are provided with magnetic cover, magnetic cover is located on the side of support one and is provided with magnetic steel one, support one is provided with voice coil one in cooperation with magnetic steel one, support one is provided with diaphragm one connected with voice coil one, diaphragm one is provided with ball top one, the magnetic steel is located on the side of support two and is provided with magnetic steel two, support two is provided with voice coil two in cooperation with magnetic steel two, support two is provided with diaphragm two connected with voice coil two, diaphragm two is provided with ball top two, the utility model uses the innovative back-to-back double-sided diaphragm design, two sets of vibration system work simultaneously, greatly improve low frequency volume;Two sets of vibration system share a set of magnetic circuit system, save the cost of monomer, and more save the space stacking space of notebook computer.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, specifically to a large-diameter double-sided loudspeaker. Background Technology

[0002] As the core transducer that converts electrical signals into sound signals, the performance of a loudspeaker directly determines the sound quality output of an audio system. Currently, mainstream products still primarily use single-sided loudspeakers. However, with the rapid development of the e-sports industry and the continued expansion of the gaming laptop market, users are placing higher demands on audio equipment, urgently requiring high-performance loudspeaker solutions that can provide surround sound. While existing technologies have produced bi-sided loudspeakers composed of two independent sound units arranged back-to-back, this traditional structure has significant design flaws: First, using two completely independent sound units significantly increases the overall thickness of the product, contradicting the current trend towards thinner and lighter consumer electronics; second, the superposition of the dual magnetic circuit system and support structure not only increases the product's weight but also leads to low internal space utilization; furthermore, this simple stacking structure makes it difficult to ensure the performance consistency of the two sound units, affecting sound field balance. Especially in space-constrained applications such as gaming laptops, traditional bi-sided loudspeakers cannot meet the requirements of a compact internal layout and struggle to achieve high-fidelity audio reproduction. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a large-diameter double-sided loudspeaker.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter double-sided loudspeaker, comprising a first support and a second support stacked on top of each other, wherein a magnetic cover is disposed between the first support and the second support.

[0005] A magnet is mounted on one side of the magnetic cover of the support. A voice coil that mates with the magnet is located inside the support. A diaphragm connected to the voice coil is mounted on the support, and a dome is mounted on the diaphragm.

[0006] The magnet is located on one side of the support. The support contains a voice coil that cooperates with the magnet. The support has a diaphragm connected to the voice coil and a dome.

[0007] In some embodiments, the first bracket and the second bracket are bracket frames with the same structure.

[0008] In some embodiments, the inner frame of the bracket frame is set with a diameter of 40*13mm.

[0009] In some embodiments, both bracket one and bracket two are provided with mutually paired positioning blocks and positioning slots.

[0010] In some embodiments, a first pole piece is provided on the first magnet, and a second pole piece is provided on the second magnet.

[0011] Compared with the prior art, the beneficial effects of this utility model are: it adopts a large-diameter shape of 40*13 and an innovative back-to-back double-sided diaphragm design, with two vibration systems sharing a single magnetic circuit system. This design has the following characteristics:

[0012] 1) The speaker adopts a large-diameter design of 40*13, increasing the vibration area by 15% compared to conventional mass-produced products;

[0013] 2) Adopting an innovative back-to-back double-sided diaphragm design, two vibration systems work simultaneously, increasing low-frequency volume by 3dB;

[0014] 3) The two vibration systems share a single magnetic circuit system, saving on individual unit costs while reducing the laptop's stacking space by 10%;

[0015] 4) The new back-to-back double-sided sound-generating structure can effectively cancel its own vibration and improve the shell vibration problem.

[0016] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. The embodiments of this application will provide a detailed description and understanding of the application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is an exploded view of the present invention.

[0020] In the diagram: 1. Support 1; 2. Support 2; 3. Magnet cover; 4. Magnet 1; 5. Pole 1; 6. Voice coil 1; 7. Diaphragm 1; 8. Dome 1; 9. Magnet 2; 10. Pole 2; 11. Voice coil 2; 12. Diaphragm 2; 13. Dome 2. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In existing technologies, speakers, as electroacoustic conversion devices, directly affect sound quality. The development of the e-sports industry is driving the growth in demand for gaming laptops, and users are constantly raising their requirements for audio quality. Traditional dual-sided speakers use a back-to-back dual-sound-emitting device structure, which can achieve bidirectional sound emission, but the overall thickness and weight are significantly increased, making it difficult to adapt to the trend of thinner and lighter consumer electronics products.

[0023] To address the aforementioned issues, the increased volume resulting from traditional layered structures needs to be resolved. The design team discovered that the independent assembly of the two sound-generating units was the main cause of the increased thickness, and attempted to integrate the two sound-generating structures into the same axial space. By analyzing the magnetic circuit system layout, they proposed a shared magnetic cover and a layered arrangement of the voice coil assembly to eliminate redundant structures. The voice coil and diaphragm are symmetrically distributed, achieving bidirectional sound wave radiation within a limited space.

[0024] Therefore, as Figure 1-3 As shown, this application proposes a support frame 1 and a support frame 2 stacked on top of each other, with a magnetic cover between them. A magnet 1 is disposed on one side of the magnetic cover, and a voice coil 1 that mates with the magnet 1 is disposed inside the support frame 1. The voice coil 1 is connected to a diaphragm 1, and a dome 1 is disposed on the surface of the diaphragm 1. A magnet 2 is disposed on the other side of the magnetic cover, and a voice coil 2 that mates with the magnet 2 is disposed inside the support frame 2. The voice coil 2 is connected to a diaphragm 2, and a dome 2 is disposed on the surface of the diaphragm 2. Simultaneously, a pole piece 1 is disposed on the magnet 1, and a pole piece 2 is disposed on the magnet 2.

[0025] The stacked support structure refers to two independent supports stacked axially, which can be achieved using injection-molded metal frames to form a coaxial mounting base. The magnetic cover is a magnetically conductive component placed between the two supports, which can be stamped from a soft magnetic alloy sheet and used to guide the distribution of magnetic lines of force between the two sets of magnets. Magnet One and Magnet Two refer to permanent magnets fixed on both sides of the magnetic cover, which can be neodymium iron boron ring magnets, forming closed magnetic circuits within their respective supports. Voice Coil One and Voice Coil Two refer to conductive coils wound within Support One and Support Two respectively, which can be made of copper-clad aluminum wire and generate Lorentz force to drive vibration in a magnetic field. Diaphragm One and Diaphragm Two refer to vibrating elements covering the surfaces of their corresponding supports, which can be made of polyimide film composite layers to convert mechanical vibration into sound wave radiation. Dome One and Dome Two refer to the protruding structures located in the center of the diaphragms, which can be molded from phenolic resin and used to control the sound wave diffusion angle.

[0026] Specifically, two sets of supports are assembled in a stacked manner to form a compact axial structure, with the magnetic cover serving as a shared component to separate the magnetic circuit systems on both sides. Inside support one, the voice coil moves axially within the magnetic field formed by the magnet, driving the diaphragm to vibrate and produce sound. Inside support two, the voice coil moves in the opposite direction within the magnetic field formed by the magnet, causing the diaphragm to vibrate synchronously. Both sets of sound-producing units share the magnetic permeability of the magnetic cover, eliminating redundant magnetic circuit components found in traditional double-sided structures. The dome structure optimizes the sound wave phase characteristics, achieving balanced output of the bidirectional sound field.

[0027] Compared to existing technologies, traditional back-to-back dual-sound-generating devices require two independent magnetic circuit systems, resulting in a doubling of the axial length. This solution utilizes a shared magnetic shield and a stacked layout, allowing the two magnetic circuits to share the axial space, increasing the thickness only by a single layer of support. Two voice coils are symmetrically arranged on both sides of the magnetic shield, fully utilizing the magnetic field gap and avoiding magnetic energy waste. The diaphragm vibration systems are driven separately, eliminating mutual interference.

[0028] Through the above technical solutions, this application achieves approximately a 40% reduction in axial dimensions and a 30% reduction in overall weight while maintaining bidirectional sound generation functionality. The two magnetic circuit systems achieve high-efficiency conversion within a limited space, improving sound pressure level symmetry to within ±1dB. The vibration system operates independently to avoid phase distortion, extending high-frequency extension to over 20kHz, meeting the spatial sound field positioning requirements in gaming scenarios.

[0029] This application further proposes a support frame with the same structure for both support frame one and support frame two.

[0030] The bracket frame refers to the frame structure that supports the diaphragm, magnet, and voice coil. It can be manufactured using injection molding or metal stamping processes. Its structure includes a mounting surface that connects to the diaphragm and a cavity that accommodates the magnet and voice coil. Identical structure means that two bracket frames are completely identical in shape, size, and connection interfaces. This can be achieved through standardized mold production, and the spatial orientation of the two bracket frames can be arranged in a mirror-symmetrical manner during assembly.

[0031] Specifically, by designing the two brackets as identical frame structures, only one set of molds is needed to manufacture both components, allowing for rapid positioning during assembly via mirror symmetry. The inner frame structures of the two brackets form symmetrical magnetic circuit spaces, respectively supporting magnet one and magnet two, while their outer mounting surfaces maintain consistent flatness, ensuring gap-free contact during stacked assembly. During implementation, the positioning features of the bracket frames are consistent with the assembly interface of the magnetic cover, ensuring precise vertical alignment of the two sound-generating units.

[0032] Compared with existing technologies, this solution, through structural symmetry design, ensures that the two support frames are completely unified in terms of material selection, processing technology and assembly procedures, which reduces mold development costs and avoids assembly errors caused by structural differences.

[0033] Through the above technical solution, this application effectively reduces the overall thickness of the dual-sided loudspeaker, allowing both sound-generating units to share the same support frame structure, achieving a compact structure while maintaining acoustic performance. During production, there is no need to distinguish the assembly sequence of the left and right supports, improving assembly efficiency. Furthermore, the interchangeable design of the support frames reduces spare parts inventory pressure.

[0034] This application further proposes that the inner frame of the bracket be set with a diameter of 40*13mm.

[0035] The inner frame of the support structure refers to the space within the support structure used to house the voice coil and magnet assembly. This space can be rectangular or near-rectangular in cross-section, with dimensions such as 40mm in length and 13mm in width. The selection of these dimensions is based on the matching requirements between the voice coil's range of motion and the magnetic circuit system layout, enabling effective coordination between the magnet and voice coil within a limited space.

[0036] Specifically, by setting the inner frame of the bracket to a rectangular structure, for example, 40mm*13mm, a compact and symmetrical layout of the bracket can be achieved while ensuring the voice coil travel and magnet installation space. This design keeps the overall thickness of the two brackets stacked within a reasonable range, while increasing the vibration area by 15% compared to conventional products.

[0037] Through the above technical solution, this application solves the problem of excessive thickness caused by mismatched bracket size in traditional double-sided loudspeakers, so that the stacked double-sided sound unit can meet the requirements of thinner and lighter electronic devices, while ensuring the matching accuracy of voice coil and magnet, and avoiding vibration interference or magnetic leakage caused by space redundancy.

[0038] This application further proposes that both bracket one and bracket two are respectively provided with mutually matched positioning blocks and positioning slots.

[0039] The positioning block refers to a raised structure on the surface of the bracket, which can be made of a rigid material block in the shape of a cuboid or cylinder, used to physically fit with the positioning groove. The positioning groove refers to a recessed structure on the surface of the bracket, which can be a groove with a complementary shape to the positioning block, used to accommodate the positioning block and restrict relative displacement. Mutual matching means that the dimensions and positions of the positioning block and the positioning groove have a corresponding relationship, which can be achieved by pre-designing the machining error range to ensure that the two can fit perfectly.

[0040] Specifically, during the assembly of bracket one and bracket two, positioning blocks are inserted into corresponding positioning slots, physically constraining their relative positions. For example, the engagement of the positioning blocks with the positioning slots eliminates horizontal offset errors, while the vertical contact surfaces restrict axial rotation. Thus, the stacked assembly of the two brackets is guided to a preset position, achieving precise alignment without relying on repeated manual adjustments.

[0041] This application simplifies the assembly process into a single embedding action through the self-guiding structure of the positioning block and positioning groove, which not only reduces the dependence on operational precision, but also avoids component wear caused by multiple adjustments.

[0042] Through the above technical solution, this application solves the problem of voice coil misalignment caused by manual alignment error during the assembly of double-sided loudspeaker stacks, improves the efficiency and accuracy of bracket assembly, and ensures the stability of the fit between the voice coil and the magnet.

[0043] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large format binaural loudspeaker, characterized by: It comprises a support one and a support two which are arranged in mutual superposition, a magnetic cover is arranged between the support one and the support two, The magnetic cover is arranged on one side of the support one and is provided with a magnetic steel one, the support one is internally provided with a voice coil one matched with the magnetic steel one, the support one is provided with a diaphragm one connected with the voice coil one, and the diaphragm one is provided with a ball top one, The magnetic steel is arranged on one side of the support two and is provided with a magnetic steel two, the support two is internally provided with a voice coil two matched with the magnetic steel two, the support two is provided with a diaphragm two connected with the voice coil two, and the diaphragm two is provided with a ball top two.

2. The large format binaural loudspeaker of claim 1, wherein: The support one and the support two are support frames with the same structure.

3. The large format binaural loudspeaker of claim 2, wherein: The inner frame of the support frame is arranged in a 40*13mm caliber.

4. The large format binaural loudspeaker of claim 1, wherein: The support one and the support two are respectively provided with a positioning block and a positioning groove matched with each other.

5. The large format two-sided loudspeaker of claim 1, wherein: The magnetic steel one is provided with a pole piece one, and the magnetic steel two is provided with a pole piece two.

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