Axial magnetizing and radiation magnetizing mixed magnetizing structure and loudspeaker

Abstract

The utility model relates to a mixed magnetizing structure of axial magnetizing and radiation magnetizing. The mixed magnetizing structure comprises a yoke, a washer, first magnetic steel and second magnetic steel, the yoke iron is in a bowl shape, the first magnetic steel and the washer are arranged in the yoke iron, the first magnetic steel is tightly attached to the bottom of the yoke iron, and one side of the S pole of the first magnetic steel is attached to the yoke iron. The washer is arranged at the top of the first magnetic steel, the washer is attached to one side of the N pole of the first magnetic steel, and the washer and the first magnetic steel are coaxially arranged; the second magnetic steel is annular, the second magnetic steel is arranged on the outer side of the washer in a sleeving mode, and one side of the N pole of the second magnetic steel is attached to the inner wall of the yoke iron. According to the utility model, the radiation magnetic circuit is connected in series with the axial magnetic circuit, so that the magnetic field intensity of the working gap is improved, larger vibration force is applied to the voice coil, and the sensitivity of the product is effectively improved; and the radiation magnetic circuit structure has more uniform and symmetrical magnetic field intensity relative to the voice coil, so that the distortion of the product can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker manufacturing, in particular to a mixed magnetization structure of axial magnetization and radiation magnetization and a loudspeaker. Background Art

[0002] Speaker magnetization refers to the process of magnetizing or enhancing the magnetic properties of the speaker's magnetic components. This process is crucial to the proper functioning and sound quality of the speaker. Conventional speaker magnetization involves two types of magnetization: axial magnetization and radial magnetization. Axial magnetization involves magnetizing the magnet along its axis, while radial magnetization involves magnetizing the magnet radiating along a circle.

[0003] The single axial and radial magnetizing circuits widely used in existing technologies are bulky and difficult to adapt to smaller speakers. Furthermore, the low and uneven magnetic field strength of a single magnetizing circuit affects product sensitivity and also results in high distortion. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low magnetic field strength and uneven magnetic field strength of a single magnetizing magnetic circuit in the prior art.

[0005] In order to solve the above technical problems, the utility model provides a hybrid magnetization structure of axial magnetization and radiation magnetization, comprising: a choke, a washer, a first magnetic steel and a second magnetic steel;

[0006] The choke is bowl-shaped, and the first magnet and the washer are both arranged inside the choke. The first magnet is arranged close to the bottom of the choke, and one side of the S pole of the first magnet is in contact with the choke; the washer is arranged on the top of the first magnet, and the washer is in contact with one side of the N pole of the first magnet, and the washer is coaxially arranged with the first magnet; the second magnet is annular, and the second magnet is sleeved on the outside of the washer, and one side of the N pole of the second magnet is in contact with the inner wall of the choke.

[0007] In one embodiment of the present invention, a washer is provided between the second magnetic steel and the end surface of the bottom of the yoke, so that the second magnetic steel is sleeved on the outside of the washer.

[0008] In one embodiment of the present invention, the inner diameter of the second magnetic steel is larger than the outer diameter of the washer.

[0009] In one embodiment of the present invention, the thickness of the second magnetic steel is 1.2-1.5 times the thickness of the washer.

[0010] In one embodiment of the present invention, the distance from the top surface of the second magnetic steel to the top surface of the washer is equal to the distance from the bottom surface of the second magnetic steel to the bottom surface of the washer.

[0011] In one embodiment of the present invention, the gasket is made of plastic or aluminum.

[0012] A loudspeaker comprises the hybrid magnetization structure of axial magnetization and radiation magnetization, and also comprises a basin, a voice coil and a diaphragm, wherein the basin is clamped on the outside of the yoke, the diaphragm is covered on the basin, and the voice coil is arranged between the diaphragm and the basin.

[0013] In an embodiment of the present invention, one end of the voice coil away from the diaphragm is sleeved on the outside of the washer.

[0014] In one embodiment of the present invention, a support plate is further provided between the diaphragm and the basin frame. The support plate is sleeved on the outside of the voice coil, and the outer edge of the support plate is connected to the basin frame.

[0015] The above technical solution of the utility model has the following advantages compared with the prior art:

[0016] The utility model describes a hybrid magnetization structure of axial magnetization and radial magnetization. The utility model connects the radial magnetic circuit in series with the axial magnetic circuit, thereby improving the magnetic field strength of the working gap, exerting a greater vibration force on the voice coil, and effectively improving the sensitivity of the product. The radial magnetic circuit structure has a more uniform and symmetrical magnetic field strength relative to the voice coil, which can improve the distortion of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0018] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0020] Explanation of the reference numerals in the accompanying drawings in the specification: 1. choke; 2. washer; 3. first magnet; 4. second magnet; 5. gasket; 6. basin frame; 7. voice coil; 8. diaphragm; 9. support plate. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0022] Example 1

[0023] Reference Figure 1-Figure 2 As shown, the utility model discloses a hybrid magnetization structure of axial magnetization and radiation magnetization, comprising: a yoke 1, a washer 2, a first magnetic steel 3 and a second magnetic steel 4;

[0024] The yoke 1 is bowl-shaped, and the first magnetic steel 3 and the washer 2 are both arranged inside the yoke 1. The first magnetic steel 3 is arranged close to the bottom of the yoke 1, and one side of the S pole of the first magnetic steel 3 is in contact with the yoke 1; the washer 2 is arranged on the top of the first magnetic steel 3, and the washer 2 is in contact with one side of the N pole of the first magnetic steel 3, and the washer 2 is coaxially arranged with the first magnetic steel 3; the second magnetic steel 4 is annular, and the second magnetic steel 4 is sleeved on the outside of the washer 2, and one side of the N pole of the second magnetic steel 4 is in contact with the inner wall of the yoke 1.

[0025] As can be seen, the hybrid magnetization structure of the present invention combines axial magnetization with radiative magnetization. Specifically, the entire yoke 1 is bowl-shaped, with a first magnetic steel 3 disposed on the bottom surface of the yoke 1, the top surface of which is in contact with a washer 2. Preferably, both the first magnetic steel 3 and the washer 2 are cylindrical structures, and the first magnetic steel 3 and the washer 2 are coaxially arranged to ensure uniform distribution of the magnetic field along the axis of the magnet. Secondly, the second magnetic steel 4 is annularly mounted on the outside of the washer 2, and the second magnetic steel 4 performs radiative magnetization.

[0026] The present invention connects the radiation magnetic circuit in series with the axial magnetic circuit, thereby increasing the magnetic field strength of the working gap, exerting a greater vibration force on the voice coil 7, and effectively improving the sensitivity of the product; the radiation magnetic circuit structure has a more uniform and symmetrical magnetic field strength relative to the voice coil 7, which can improve the distortion of the product.

[0027] Secondly, under the same magnetic field strength, smaller magnets can be used, saving materials. Using the same materials, the magnetic field strength can be enhanced, improving product sensitivity. Compared with the traditional single axial magnetization circuit, the magnetic field strength distribution is more symmetrical, which is more conducive to reducing distortion. Compared with the traditional single radial magnetization circuit, while maintaining the symmetry of the magnetic field strength, the product sensitivity can be significantly improved.

[0028] Furthermore, a washer 5 is provided between the second magnetic steel 4 and the end surface of the bottom of the yoke 1 , so that the second magnetic steel 4 is sleeved on the outside of the washer 2 .

[0029] Specifically, a washer 5 disposed at the bottom of the second magnetic steel 4 increases the height of the second magnetic steel 4, ensuring that the second magnetic steel 4 is completely nested outside the washer 2. The inner diameter of the second magnetic steel 4 is larger than the outer diameter of the washer 2. A gap is left between the second magnetic steel 4 and the washer 2, leaving sufficient space for the subsequent installation of the voice coil 7.

[0030] As a preferred embodiment of the present invention, the thickness of the second magnetic steel 4 is 1.2-1.5 times that of the washer 2. Furthermore, the distance between the top surface of the second magnetic steel 4 and the top surface of the washer 2 is equal to the distance between the bottom surface of the second magnetic steel 4 and the bottom surface of the washer 2. These two components are placed symmetrically, creating a symmetrical magnetic circuit and improving the symmetry of the magnetic field strength within the magnetic gap, significantly reducing distortion.

[0031] Furthermore, the gasket 5 is made of plastic or aluminum.

[0032] Specifically, the main function of the washer 5 is to increase the height of the second magnetic steel 4. In the present invention, the washer material can be aluminum or plastic. Preferably, when aluminum is used, it acts as a short-circuit ring, which can improve distortion and enhance high-frequency response.

[0033] Example 2

[0034] A loudspeaker, comprising the hybrid magnetization structure of axial magnetization and radiation magnetization described in Example 1, further comprising a basket 6, a voice coil 7 and a diaphragm 8, wherein the basket 6 is clamped on the outside of the yoke 1, the diaphragm 8 is covered on the basket 6, and the voice coil 7 is arranged between the diaphragm 8 and the basket 6; the end of the voice coil 7 away from the diaphragm 8 is sleeved on the outside of the washer 2.

[0035] Specifically, the voice coil 7 is a key component of the loudspeaker and is wound by a wire (usually a round copper wire or aluminum wire). When the audio current passes through the voice coil 7, the voice coil 7 is acted upon by a force in the magnetic field, causing vibration. The vibration frequency and amplitude of the voice coil 7 determine the sound characteristics emitted by the loudspeaker, such as frequency response, distortion, and sensitivity. The voice coil 7 is installed in the gap between the second magnetic steel 4 and the washer 2. The diaphragm 8 is the component in the loudspeaker that directly pushes the air to make sound. The vibration of the voice coil 7 drives the diaphragm 8 to vibrate, thereby pushing the surrounding air to produce sound waves. The material and shape of the diaphragm 8 have an important influence on the sound quality of the loudspeaker. Common materials include paper, glass fiber, carbon fiber, etc.

[0036] Furthermore, a support piece 9 is provided between the diaphragm 8 and the basin frame 6 . The support piece 9 is sleeved on the outside of the voice coil 7 , and the outer edge of the support piece 9 is connected to the basin frame 6 .

[0037] Specifically, support plate 9 supports the junction of voice coil 7 and diaphragm 8, ensuring they are perpendicular and stable. It also provides a restoring force for diaphragm 8, keeping voice coil 7 correctly positioned within the magnetic gap during movement. The performance of support plate 9 significantly impacts the speaker unit's mid- and low-frequency reproduction.

[0038] In summary, the present invention introduces a hybrid magnetization structure of axial magnetization and radial magnetization. The present invention connects the radial magnetic circuit in series with the axial magnetic circuit, thereby improving the magnetic field strength of the working gap, exerting a greater vibration force on the voice coil 7, and effectively improving the sensitivity of the product; the radial magnetic circuit structure has a more uniform and symmetrical magnetic field strength relative to the voice coil 7, which can improve the distortion of the product.

[0039] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A hybrid magnetization structure of axial magnetization and radiation magnetization, characterized in that: include: choke, washer, first magnetic steel and second magnetic steel; The choke is bowl-shaped, and the first magnet and the washer are both arranged inside the choke. The first magnet is arranged close to the bottom of the choke, and one side of the S pole of the first magnet is in contact with the choke; the washer is arranged on the top of the first magnet, and the washer is in contact with one side of the N pole of the first magnet, and the washer is coaxially arranged with the first magnet; the second magnet is annular, and the second magnet is sleeved on the outside of the washer, and one side of the N pole of the second magnet is in contact with the inner wall of the choke.

2. The hybrid magnetization structure of axial magnetization and radiation magnetization according to claim 1, characterized in that: A washer is provided between the second magnetic steel and the end surface of the bottom of the yoke, so that the second magnetic steel is sleeved on the outside of the washer.

3. The hybrid magnetization structure of axial magnetization and radiation magnetization according to claim 1, characterized in that: The inner diameter of the second magnetic steel is larger than the outer diameter of the washer.

4. The hybrid magnetization structure of axial magnetization and radiation magnetization according to claim 1, characterized in that: The thickness of the second magnetic steel is 1.2-1.5 times the thickness of the washer.

5. The hybrid magnetization structure of axial magnetization and radiation magnetization according to claim 1, characterized in that: The distance from the top surface of the second magnetic steel to the top surface of the washer is equal to the distance from the bottom surface of the second magnetic steel to the bottom surface of the washer.

6. The hybrid magnetization structure of axial magnetization and radiation magnetization according to claim 2, characterized in that: The material of the gasket is plastic or aluminum.

7. A loudspeaker comprising the hybrid magnetization structure of axial magnetization and radiation magnetization according to any one of claims 1 to 6, characterized in that: It also includes a basin frame, a voice coil and a diaphragm. The basin frame is clamped on the outside of the yoke, the diaphragm covers the basin frame, and the voice coil is arranged between the diaphragm and the basin frame.

8. The loudspeaker according to claim 7, wherein: One end of the voice coil away from the diaphragm is sleeved on the outer side of the washer.

9. The loudspeaker according to claim 7, wherein: A support piece is further provided between the diaphragm and the basin frame. The support piece is sleeved on the outside of the voice coil, and the outer edge of the support piece is connected to the basin frame.

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