Dual-haus magnetic circuit system and loudspeaker

Abstract

The utility model relates to the technical field of loudspeaker, the utility model discloses a double hua si magnetic circuit system, including T iron, the magnetic steel of T iron outside setting and the hua si subassembly of T iron outside setting and located the upper end of magnetic steel, the gap groove is formed between magnetic steel and hua si subassembly and T iron, voice coil is located in the gap groove, the inside ring of hua si subassembly is equipped with the installation groove, the short circuit ring is inlayed in the installation groove, the inner wall of short circuit ring is flush with the inner wall of hua si subassembly. This technical scheme can increase the magnetic induction intensity and reduce the loudspeaker distortion under the condition of guaranteeing the invariable magnetic gap width by setting the short circuit ring in the hua si subassembly, the double hua si structure of this technical scheme is superimposed, can increase the magnetic conductivity cross -section area, guarantee the center position of short circuit ring in the volume of voice coil, so that when the magnetic circuit saturation magnetization, the wide magnetic field area will be produced on two hua si, and voice coil moves completely in the magnetic field, reduces the distortion.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a dual-wasp magnetic circuit system and loudspeaker. Background Technology

[0002] In loudspeakers, placing a short-circuit ring in the magnetic circuit can effectively reduce inductance changes, thereby reducing harmonic and intermodulation distortion. By comparing the inductance changes with and without a short-circuit ring, as well as the harmonic and intermodulation distortion, it is clear that the short-circuit ring effectively optimizes loudspeaker performance.

[0003] Chinese utility model patent "201921440016.9" discloses a loudspeaker structure employing a symmetrical short-circuit ring design. Specifically, it includes a U-shaped iron / T-shaped iron, a magnet, a washer, a voice coil, and a short-circuit ring. The U-shaped iron / T-shaped iron, the magnet, and the washer form a magnetic circuit gap. The voice coil and the short-circuit ring are disposed within this magnetic circuit gap, with the short-circuit ring tightly attached to the inner / outer surface of the U-shaped iron / T-shaped iron. The voice coil is positioned within the gap between the short-circuit ring, the magnet, and the washer. The short-circuit ring forms a symmetrical structure with the center of the magnetic gap as its axis, covering the upper and lower stroke range of the voice coil. This utility model, by employing a symmetrical short-circuit ring design, covers the voice coil stroke or the linear range required by the actual design, significantly reducing the nonlinear changes in voice coil inductance and impedance within the required stroke range, thereby improving loudspeaker performance. Furthermore, the symmetrical short-circuit ring design correspondingly increases the height of the T-shaped iron or U-shaped iron, indirectly increasing the heat dissipation area of ​​the magnetic circuit system, thus providing a certain degree of heat dissipation.

[0004] The drawback of the aforementioned patent document is that this design requires increasing the size of the T-iron and the magnetic gap, which will reduce the sensitivity. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dual-wasp magnetic circuit system and loudspeaker that increases magnetic induction intensity and reduces loudspeaker distortion while keeping the magnetic gap width unchanged.

[0006] This utility model is achieved through the following technical solution:

[0007] A dual-waser magnetic circuit system includes a T-iron, a magnet sleeved on the outside of the T-iron, and a washer assembly sleeved on the outside of the T-iron and located at the upper end of the magnet. A gap groove is formed between the magnet and the washer assembly and the T-iron, and a voice coil is located in the gap groove.

[0008] The inner ring of the washer assembly has a mounting groove, and a short-circuit ring is embedded in the mounting groove. The inner wall of the short-circuit ring is flush with the inner wall of the washer assembly.

[0009] A further configuration of this technical solution is as follows: the T-iron includes a horizontal part and a vertical part vertically disposed above the center of the horizontal part; the magnet is sleeved on the outside of the vertical part and located at the upper end of the horizontal part; the washer assembly is sleeved on the outside of the vertical part and located at the upper end of the magnet; a gap groove is formed between the magnet and the washer assembly and the vertical part of the T-iron.

[0010] A further configuration of this technical solution is: the washer assembly includes a first washer attached to the top surface of the magnet and a second washer attached to the top surface of the first washer.

[0011] A further provision of this technical solution is that the mounting groove is located inside the first washer or inside the second washer.

[0012] A loudspeaker comprising the aforementioned dual washer magnetic system.

[0013] This utility model discloses a dual-wasp magnetic circuit system, which, compared with the prior art:

[0014] This technical solution increases the magnetic induction intensity and reduces speaker distortion by placing the short-circuit ring inside the washer assembly, while keeping the magnetic gap width unchanged. The double washer structure is stacked, which increases the magnetic cross-sectional area and ensures that the short-circuit ring is centered on the voice coil. This results in a wider magnetic field area on the two washers after the magnetic circuit is saturated with magnetization, allowing the voice coil to move entirely within the magnetic field and reducing distortion. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 for Figure 2 A magnified view of side A.

[0018] Figure 4 This is a schematic diagram illustrating the simulation effect of a typical magnetic circuit structure.

[0019] Figure 5 This is a simulation diagram of the structure of this utility model.

[0020] The numbers and letters in the diagram represent the names of the corresponding components:

[0021] Among them: 100, T-iron; 200, magnet; 300, washer assembly; 301, mounting slot; 302, first washer; 303, second washer; 400, gap slot; 500, voice coil; 600, short-circuit ring. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this utility model. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] See Figures 1 to 3 As shown, a dual-wafer magnetic circuit system includes a T-iron 100, a magnet 200 sleeved on the outside of the T-iron 100, and a washer assembly 300 sleeved on the outside of the T-iron 100 and located above the magnet 200. A gap groove 400 is formed between the magnet 200 and the washer assembly 300 and the T-iron 100, and a voice coil 500 is located in the gap groove 400. The inner side of the washer assembly 300 is provided with a mounting groove 301, and a short-circuit ring 600 is embedded in the mounting groove 301. The inner wall of the short-circuit ring 600 is connected to the T-iron 100. The inner wall of the washer assembly 300 is flush with the wall. In the above technical solution, the short-circuit ring 600 is fixed to the washer assembly 300 by adhesive bonding. The gap groove 400 allows the voice coil 500 to move up and down. The function of the short-circuit ring is to counteract changes in voice coil inductance, improve magnetic field symmetry and linearity, and reduce speaker distortion. This technical solution, by placing the short-circuit ring 600 inside the washer assembly 300, does not require reducing the outer diameter of the mechanism. It can increase the Bg value (magnetic induction intensity) while maintaining the magnetic gap width unchanged. See [reference needed]. Figure 4 and Figure 5 As shown, by adopting the structural design of this technical solution, the Bg value is greatly enhanced compared to ordinary magnetic circuit structures.

[0025] See Figure 2As shown, the T-iron 100 includes a horizontal portion 101 and a vertical portion 102 vertically disposed above the center of the horizontal portion 101; the magnet 200 is sleeved on the outside of the vertical portion 102 and located at the upper end of the horizontal portion 101; the washer assembly 300 is sleeved on the outside of the vertical portion 102 and located at the upper end of the magnet 200; a gap groove 500 is formed between the magnet 200 and the washer assembly 300 and the vertical portion 102 of the T-iron 100; it is worth noting that the magnet 200 is a ring magnet.

[0026] See Figure 2 and Figure 3 As shown, the washer assembly 300 includes a first washer 302 attached to the top surface of the magnet 200 and a second washer 303 attached to the top surface of the first washer 302; as a preferred embodiment of the mounting groove 301, the mounting groove 301 is located inside the first washer 302 or inside the second washer 303; in the above technical solution, the washer assembly 300 in this technical solution adopts a double washer structure, that is, the first washer 302 and the second washer 303 are stacked together. With this structural design, the magnetic cross-sectional area can be increased to ensure that the short-circuit ring is in the center position of the voice coil.

[0027] The working principle is as follows: when the magnetic circuit is saturated with magnetization, a wider magnetic field area will be generated on the two washer, and the voice coil will move completely within the magnetic field, which can reduce distortion.

[0028] A loudspeaker comprising the aforementioned dual washer magnetic system.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A dual-warp magnetic circuit system, characterized in that, It includes a T-iron (100), a magnet (200) sleeved on the outside of the T-iron (100), and a washer assembly (300) sleeved on the outside of the T-iron (100) and located on the upper end of the magnet (200). A gap groove (400) is formed between the magnet (200) and the washer assembly (300) and the T-iron (100), and a voice coil (500) is located in the gap groove (400). The inner ring of the washer assembly (300) is provided with a mounting groove (301), and a short-circuit ring (600) is embedded in the mounting groove (301). The inner wall of the short-circuit ring (600) is flush with the inner wall of the washer assembly (300).

2. The dual-warp magnetic circuit system according to claim 1, characterized in that: The T-iron (100) includes a horizontal portion (101) and a vertical portion (102) vertically disposed above the center of the horizontal portion (101); the magnet (200) is sleeved on the outside of the vertical portion (102) and located at the upper end of the horizontal portion (101); the washer assembly (300) is sleeved on the outside of the vertical portion (102) and located at the upper end of the magnet (200); a gap groove (400) is formed between the magnet (200) and the washer assembly (300) and the vertical portion (102) of the T-iron (100).

3. The dual-warp magnetic circuit system according to claim 1, characterized in that: The washer assembly (300) includes a first washer (302) attached to the top surface of the magnet (200) and a second washer (303) attached to the top surface of the first washer (302).

4. A dual-warp magnetic circuit system according to claim 3, characterized in that: The mounting slot (301) is located inside the first washer (302) or inside the second washer (303).

5. A loudspeaker, characterized in that: It includes the dual-wasp magnetic circuit system as described in any one of claims 1-4.

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