An optimized structure for a dual-circular magnetic single-sided vibration-damping horn

Abstract

This utility model discloses an optimized structure for a dual-circular magnet single-sided vibration-damping speaker, including a diaphragm, voice coil, frame, and magnetic circuit. The magnetic circuit includes a magnetic cup, a central magnet, and a central pole plate, as well as dovetail-shaped first and second vibration-damping springs. The magnetic cup is a flat plate structure with both its front and rear faces being planar. The first and second vibration-damping springs are symmetrically arranged on the front face of the magnetic cup and are positioned and assembled with frame positioning posts on the frame through spring positioning holes on the first and second vibration-damping springs. The magnetic circuit also includes an annular magnet and an annular pole plate. The central magnet and the annular magnet are both located at the center of the front face of the magnetic cup, and the annular magnet is coaxially arranged around the central magnet. The central pole plate is coaxially arranged on the front face of the central magnet, and the annular pole plate is coaxially arranged on the front face of the annular magnet. This speaker structure, with its split vibration-damping springs, is less prone to deformation, reduces the amplitude of the box shell, and improves loudness.

Description

Technical Field

[0001] This utility model relates to the technical field of horn structure, and in particular to an optimized structure for a double-circular-magnet single-sided vibration-damping horn. Background Technology

[0002] See Figure 1 and Figure 2 Currently, the existing single-circular magnet single-sided vibration damping speaker structures on the market typically include a diaphragm 1. ’ Voice coil 2 ’ 3 basin stands ’ Magnetic circuit 4 ’ And integrated mesh-like vibration damping spring 5 ’ 5 integrated mesh-like vibration damping springs ’ Installed in magnetic circuit 4 ’ The rear end face of magnetic bowl a, magnetic bowl a is a bowl-shaped structure with a flange, magnetic bowl a and an integrated mesh-like vibration damping spring 5 ’ After assembly, it uses an integrated mesh-like vibration damping spring 5 ’ The spring clip positioning hole and the basin stand 3 ’ The speaker is positioned and assembled using the frame positioning posts. However, this type of single-circle magnetic single-sided vibration damping horn structure has the following main defects:

[0003] ①Due to structural limitations, the flange size of magnetic cup a cannot be too large, resulting in the integrated mesh-like vibration damping spring 5 ’ The fixing position of the magnetic cup a is too small, which leads to the integrated mesh-like vibration damping spring 5 ’ It is easily deformed.

[0004] ② Integrated mesh-like vibration damping spring 5 ’ Increased BOX (speaker enclosure) vibration amplitude with increased speaker volume: Integrated mesh damping spring 5 ’ This reduces energy loss, allowing the mechanical vibration of the speaker unit to be transmitted to the speaker enclosure more efficiently, thereby synchronously amplifying the resonance amplitude of the speaker enclosure and improving the sound energy radiation efficiency.

[0005] ③ The magnetic field distribution of the single-circular magnetic circuit structure has limitations, resulting in low magnetic field line density and uniformity, which cannot fully drive the diaphragm. ’ The high efficiency of motion limits the conversion efficiency of acoustic energy, resulting in lower loudness. Utility Model Content

[0006] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the existing technology, an optimized structure for a dual-circular magnetic single-sided vibration-damping speaker is provided. By adopting a split dovetail-shaped vibration-damping spring design that is not easily deformed, the split dovetail-shaped vibration-damping spring makes the magnetic circuit resonance frequency close to the resonance frequency of the BOX shell within a limited structural space, effectively reducing the amplitude of the BOX shell. By adopting a dual-magnetic structure to enhance the magnetic field efficiency and improve the loudspeaker loudness, although it will increase the vibration of the BOX shell, its symmetrical magnetic field distribution characteristics can more effectively prevent resonance noise caused by loud sound and large vibration.

[0007] The technical solution adopted by this utility model to solve its technical problem is: an optimized structure of a dual-circular magnet single-sided vibration-damping speaker, including a diaphragm, voice coil, frame, and magnetic circuit arranged sequentially from front to back. The magnetic circuit includes a magnetic cup, a central magnet, and a central pole plate. The optimized structure of the dual-circular magnet single-sided vibration-damping speaker also includes a dovetail-shaped first damping spring and a dovetail-shaped second damping spring. The magnetic cup is a flat plate structure with both the front and rear faces being flat. The first and second damping springs are symmetrically arranged on the front face of the magnetic cup and are positioned and assembled with the frame positioning post on the frame through the spring positioning holes on the first and second damping springs. The magnetic circuit also includes an annular magnet and an annular pole plate. The central magnet and the annular magnet are both located at the center of the front face of the magnetic cup, and the annular magnet is coaxially arranged around the central magnet. The central pole plate is coaxially arranged on the front face of the central magnet, and the annular pole plate is coaxially arranged on the front face of the annular magnet.

[0008] To be further specific, in the above technical solution, the thickness of the central magnet is the same as the thickness of the annular magnet.

[0009] To be further specific, in the above technical solution, the thickness of the central electrode plate is the same as the thickness of the annular electrode plate.

[0010] To be further specific, in the above technical solution, the thickness of the central magnet is greater than the thickness of the central electrode plate.

[0011] To be further specific, in the above technical solution, both the central magnet and the central electrode plate are flat cylindrical structures.

[0012] To be further specific, in the above technical solution, both the annular magnet and the annular pole plate are flat circular structures.

[0013] The beneficial effects of this utility model are as follows: The optimized structure of the double-circular magnetic single-sided vibration damping horn of this utility model mainly includes the following advantages:

[0014] 1. The traditional integrated mesh damping spring is upgraded to a split double dovetail damping spring design, reducing the size of key components by 3 / 5, solving the problem of deformation of the integrated mesh damping spring caused by the size limitation of the traditional magnetic cup flange, and significantly reducing the defect rate of parts;

[0015] Second, the traditional integrated mesh damping spring is upgraded to a split double dovetail damping spring design. While increasing the volume, it effectively reduces the amplitude of the BOX shell. That is, by adopting a split dovetail damping spring design that is not easily deformed, the split dovetail damping spring makes the magnetic circuit resonance frequency close to the BOX shell resonance frequency within the limited structural space, effectively reducing the amplitude of the BOX shell.

[0016] Third, the dual magnetic circuit structure is adopted, which improves loudness by 2dB compared with the traditional single circular magnetic circuit structure, significantly enhancing the sound quality. That is, by adopting a dual magnetic structure to enhance the magnetic field efficiency and improve the loudness of the speaker, although it will increase the vibration of the BOX shell, its symmetrical magnetic field distribution characteristics can more effectively prevent resonance noise caused by loud vibration. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a traditional single-circle magnetic single-sided vibration damping horn structure;

[0019] Figure 2 yes Figure 1 A schematic diagram of its decomposed structure.

[0020] Figures 1-2 The label in is: 1 ’ , sound film; 2 ’ 1. Voice coil; 3 ’ 1. Pot stand; 4 ’ Magnetic circuit; 5 ’ a) Integrated mesh-like vibration damping spring; b) Magnetic bowl.

[0021] Figure 3 This is a schematic diagram of the optimized structure of the double-circular magnetic single-sided vibration damping horn of this utility model;

[0022] Figure 4 yes Figure 3 A schematic diagram of the decomposed structure;

[0023] Figure 5This is an assembly drawing of the magnetic circuit, the first damping spring, and the second damping spring in this utility model;

[0024] Figure 6 yes Figure 5 A schematic diagram of the decomposed structure;

[0025] Figure 7 This is a comparison curve of the frequency response of the enclosure between traditional single-circular magnetic single-sided vibration damping and the dual-magnetic single-sided vibration damping of this utility model.

[0026] Figure 8 This is a comparison diagram of the amplitude at a fixed point on the same BOX between traditional single-circular magnetic single-sided vibration damping and the present invention's double-circular magnetic single-sided vibration damping.

[0027] Figures 3-8 The labels in the diagram are as follows: 1. Diaphragm; 2. Voice coil; 3. Basket; 4. Magnetic circuit; 41. Magnetic cup; 42. Center magnet; 43. Center pole plate; 44. Ring magnet; 45. Ring pole plate; 5. First damping spring; 6. Second damping spring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] See Figure 3 , Figure 4 , Figure 5 and Figure 6 The present invention discloses an optimized structure for a dual-circular magnetic single-sided vibration-damping speaker, comprising a diaphragm 1, a voice coil 2, a frame 3, and a magnetic circuit 4 arranged sequentially from front to back. The magnetic circuit 4 includes a magnetic cup 41, a central magnet 42, and a central pole plate 43. The optimized structure for a dual-circular magnetic single-sided vibration-damping speaker also includes a dovetail-shaped first damping spring 5 and a dovetail-shaped second damping spring 6. The magnetic cup 41 is a flat plate structure with both the front and rear faces being planar. The dual-planar magnetic cup structure reduces its inherent resonant frequency.

[0030] The first damping spring 5 and the second damping spring 6 are symmetrically arranged on the front end face of the magnetic bowl 41. The diameter of the damping spring is integrated into the front end face of the magnetic bowl 41, which shortens the vibration attenuation path. At the same time, the first damping spring 5 and the second damping spring 6 are symmetrically distributed, and the vibration energy is dispersed through the dovetail-shaped geometric structure.

[0031] The springs on the first damping spring 5 and the second damping spring 6 are positioned and assembled with the basin frame positioning post on the basin frame 3. The rigid connection design between the springs and the basin frame positioning post enables precise control of the vibration transmission path.

[0032] The magnetic circuit 4 also includes annular magnet 44 and annular pole plate 45. The central magnet 42 and the annular magnet 44 are both located at the center of the front end face of the magnetic cup 41, and the annular magnet 44 is coaxially arranged around the central magnet 42. The central magnet 42 and the annular magnet 44 are coaxially nested to form a composite magnetic field, which significantly improves the magnetic induction intensity. The central pole plate 43 is coaxially located on the front end face of the central magnet 42, and the annular pole plate 45 is coaxially located on the front end face of the annular magnet 44.

[0033] Preferably, the thickness of the central magnet 42 is the same as the thickness of the annular magnet 44. The design of the central magnet 42 and the annular magnet 44 having the same thickness ensures the symmetry of the magnetic circuit.

[0034] The thickness of the central electrode plate 43 is the same as that of the annular electrode plate 45. Similarly, the equal thickness design of the central electrode plate 43 and the annular electrode plate 45 ensures the symmetry of the magnetic circuit.

[0035] The thickness of the central magnet 42 is greater than the thickness of the central pole plate 43. This proportional design, where the thickness of the central magnet 42 is greater than the thickness of the central pole plate 43, balances the magnetic field strength and the stability of the magnetic circuit.

[0036] Both the central magnet 42 and the central pole plate 43 are flat cylindrical structures, while both the annular magnet 44 and the annular pole plate 45 are flat annular structures. The flat cylindrical or annular structures achieve a uniform magnetic field distribution within a compact space, reducing sound distortion.

[0037] The optimized structure of this dual-circular magnetic single-sided vibration-damping horn mainly includes the following advantages:

[0038] 1. The traditional integrated mesh damping spring is upgraded to a split double dovetail damping spring (dovetail-shaped first damping spring 5 and dovetail-shaped second damping spring 6). The size of key components is reduced by 3 / 5, which solves the problem of deformation of integrated mesh damping spring caused by the size limitation of traditional magnetic cup flange, and significantly reduces the defect rate of parts.

[0039] II. The traditional integrated mesh-like damping spring is upgraded to a split-type double dovetail-shaped damping spring design (dovetail-shaped first damping spring 5 and dovetail-shaped second damping spring 6). This design effectively reduces the BOX shell amplitude while increasing volume. Specifically, by employing a non-deformable split-type dovetail-shaped damping spring design, the magnetic circuit resonance frequency is brought closer to the BOX shell resonance frequency within the limited structural space, effectively reducing the BOX shell amplitude. See details... Figure 7 , Figure 8And Table 1 below:

[0040] Table 1

[0041]

[0042] Third, a dual magnetic circuit structure (center magnet 42 and ring magnet 44) is adopted. Specifically, a ring magnet 44 is added to the traditional single circular magnetic circuit structure design. Compared with the traditional single circular magnetic circuit structure, the loudness is increased by 2dB, which significantly enhances the sound quality performance. That is, the loudness of the speaker is improved by enhancing the magnetic field efficiency through the dual magnetic structure. Although it will increase the vibration of the BOX shell, its symmetrical magnetic field distribution characteristics can more effectively prevent resonance noise caused by loud vibration.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An optimized structure for a dual-circular magnet single-sided vibration-damping horn, comprising a diaphragm (1), a voice coil (2), a frame (3), and a magnetic circuit (4) arranged sequentially from front to back, wherein the magnetic circuit (4) comprises a magnetic cup (41), a central magnet (42), and a central pole plate (43), characterized in that: The optimized structure of the double-circular magnetic single-sided vibration damping horn also includes a dovetail-shaped first vibration damping spring (5) and a dovetail-shaped second vibration damping spring (6). The magnetic bowl (41) is a flat plate structure with both the front and rear ends being flat. The first vibration damping spring (5) and the second vibration damping spring (6) are symmetrically arranged on the front end of the magnetic bowl (41). They are positioned and assembled with the basin frame positioning column on the basin frame (3) through the spring positioning holes on the first vibration damping spring (5) and the second vibration damping spring (6). The magnetic circuit (4) also includes an annular magnet (44) and an annular pole plate (45). The central magnet (42) and the annular magnet (44) are both located at the center of the front end of the magnetic bowl (41), and the annular magnet (44) is coaxially arranged around the central magnet (42). The central pole plate (43) is coaxially arranged on the front end of the central magnet (42), and the annular pole plate (45) is coaxially arranged on the front end of the annular magnet (44).

2. The optimized structure of a double-circular magnetic single-sided vibration-damping horn according to claim 1, characterized in that: The thickness of the central magnet (42) is the same as that of the annular magnet (44).

3. The optimized structure of a double-circular magnetic single-sided vibration-damping horn according to claim 2, characterized in that: The thickness of the central electrode plate (43) is the same as the thickness of the annular electrode plate (45).

4. The optimized structure of a double-circular magnetic single-sided vibration-damping horn according to claim 3, characterized in that: The thickness of the central magnet (42) is greater than the thickness of the central pole plate (43).

5. The optimized structure of a double-circular magnetic single-sided vibration-damping horn according to claim 1, characterized in that: Both the central magnet (42) and the central pole plate (43) are flat cylindrical structures.

6. The optimized structure of a double-circular magnetic single-sided vibration-damping horn according to claim 4, characterized in that: Both the annular magnet (44) and the annular pole plate (45) are flat circular structures.

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