Built-in magnetic circuit structure of loudspeaker

Abstract

The utility model discloses a built-in magnetic circuit structure of a loudspeaker, which comprises a sound cone, a damper, a cone frame, U iron and a magnetic module, the back of the cone frame is provided with a riveting port matched with the shape of the U iron, the front part of the U iron is positioned in the cone frame, and the back part of the U iron is fixed on the riveting port through a riveting structure. The U iron is arranged in the cone frame, the back surface of the U iron is flush with the back surface of the cone frame, the magnetic module is arranged in the U iron, and the sound cone and the damper are arranged on the cone frame and are connected with the magnetic module. According to the utility model, the structural design is reasonable, the U iron is arranged in the basin stand and is fixed by adopting the riveting structure, so that the back surface of the U iron is flush with the back surface of the basin stand without occupying the external structural space, the overall thickness of the loudspeaker is obviously reduced, and the light and thin design of the product is facilitated. And moreover, riveting is firm, displacement or falling is not prone to occurring, the structural stability is good, and the reliability of the loudspeaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a loudspeaker with a built-in magnetic circuit structure. Background Art

[0002] As society progresses and living standards improve, entertainment becomes increasingly important in people's lives. Televisions and monitors are the most common home entertainment devices, and people's expectations for their quality are growing. The most widely used LCD TVs and monitors today are very thin and tend to be simple. However, the speakers used in these LCD TVs and monitors are often built directly into the TVs and monitors.

[0003] As LCD televisions and LCD monitors become increasingly thinner, some speaker structures often utilize external U-shaped iron structures. For example, the utility model patent application "Ultra-Thin Speaker," with publication number "CN220273856U," discloses an ultra-thin speaker comprising a mounting housing, a U-shaped iron, a sound-generating component, and a damper. The mounting housing defines a housing cavity, a magnetic slot is defined at the first end of the U-shaped iron, the sound-generating component is disposed within the housing cavity, and the sound-generating component is partially inserted into the magnetic slot. The damper is sleeved over the sound-generating component and connected to the inner sidewall of the housing cavity. The damper has an annular avoidance groove defined on the side of the damper facing the U-shaped iron, the annular avoidance groove being aligned with the first end of the U-shaped iron and having a width greater than that of the first end of the U-shaped iron. While this achieves a thinner design, the U-shaped iron protrudes from the back of the mounting housing, occupying a significant amount of external space and hindering the thinness of the product. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the purpose of the present invention is to provide a speaker built-in magnetic circuit structure with reasonable structural design and thin overall thickness.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0006] A speaker with a built-in magnetic circuit structure includes a sound cone, a damper, a basin frame, a U-iron and a magnetic module. The back of the basin frame is provided with a rivet interface that is compatible with the shape of the U-iron. The front of the U-iron is located in the basin frame, and the back is fixed to the rivet interface through a riveting structure. The back of the U-iron is flush with the back of the basin frame. The magnetic module is arranged in the U-iron, and the sound cone and the damper are arranged on the basin frame and connected to the magnetic module.

[0007] As a preferred embodiment of the present invention, the inner side of the back edge of the U iron is provided with a riveting notch, which allows the outer edge of the edge to deform and bulge and rivet with the riveted joint after riveting. The riveting notch allows the U iron to be firmly fixed to the riveted joint of the basin frame after riveting, thereby enhancing the stability and durability of the structure.

[0008] As a preferred solution of the present invention, the riveting opening is in an arc shape, and a plurality of the riveting openings are sequentially arranged along the circumferential direction of the U iron at intervals on the back edge of the U iron, which helps to achieve more uniform deformation and a stronger fixing effect during the riveting process.

[0009] As a preferred solution of the present invention, a concave position is provided at the center of the back side of the U iron to reduce the eddy current effect, thereby reducing energy loss and improving the performance of the speaker.

[0010] As a preferred solution of the present invention, an arched portion is provided at the connection between the sound basin and the basin frame, which helps to improve the vibration characteristics of the sound basin, reduce distortion and enhance sound quality.

[0011] As a preferred solution of the present invention, a step surface is provided at the inner middle position of the basin frame, and the edge position of the elastic wave is set on the step surface, providing a stable support point for the elastic wave, thereby improving the dynamic response of the speaker.

[0012] As a preferred solution of the present invention, connection boards are provided on both sides of the basin frame, and connection ears are provided on the connection boards, which simplifies the connection process of the speaker and makes assembly more convenient.

[0013] As a preferred solution of the present invention, the magnetic module includes a voice coil, a main magnet, a secondary magnet and a washer. The secondary magnet, the washer and the main magnet are stacked in sequence in the U iron. The upper end of the voice coil is connected to the sound cone and the elastic wave, and the lower end is sleeved on the secondary magnet, the washer and the main magnet, forming an efficient magnetic system, which helps to improve the sound quality and performance of the speaker.

[0014] The beneficial effects of this utility model are as follows: The utility model has a rational structural design, placing the U-shaped iron inside the basin frame and fixing it with a riveted structure, so that the back of the U-shaped iron is flush with the back of the basin frame without occupying external structural space, significantly reducing the overall thickness of the speaker, and facilitating a lightweight and thin product design. Furthermore, the riveted joints are firm and not easily displaced or detached, providing good structural stability and improving the reliability of the speaker.

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0017] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model.

[0018] Figure 3 It is a structural schematic diagram of the basin frame and U iron in the utility model. DETAILED DESCRIPTION

[0019] See also Figures 1 to 3 The present embodiment provides a speaker with a built-in magnetic circuit structure, which includes a sound cone 1, a spring 2, a basin frame 3, a U iron 4 and a magnetic module 5.

[0020] The back of the basin frame 3 is provided with a rivet port 31 that matches the outer shape of the U-iron 4. The front portion of the U-iron 4 is located within the basin frame 3, and the back portion is fixed to the rivet port 31 via a riveted structure. The back portion of the U-iron 4 is flush with the back portion of the basin frame 3. Specifically, a rivet port 41 is provided on the inner side of the back edge of the U-iron 4. After riveting, the outer side of the edge is deformed and convex, and then riveted to the rivet port 31. The rivet port 41 is in the shape of an arc. Several of the rivet ports 41 are arranged in a sequential order along the circumferential direction of the U-iron 4 at intervals around the back edge of the U-iron 4, which helps to achieve more uniform deformation and a more secure fixation effect during the riveting process. During assembly, the U iron 4 is placed in the riveting port 31, and then the rivet head is punched into the riveting port 41, so that the riveting port 41 is enlarged and the outer deformation bulge of the back edge of the U iron 4 is forced to press tightly against the riveting port 31, so that it can be firmly fixed on the riveting port 31 of the basin frame 3, thereby enhancing the stability and durability of the structure.

[0021] The magnetic module 5 is arranged in the U iron 4, and the sound cone 1 and the elastic wave 2 are arranged on the basin frame 3 and connected to the magnetic module 5. The magnetic module 5 includes a voice coil 51, a main magnet 52, an auxiliary magnet 53 and a washer 54. The auxiliary magnet 53, the washer 54 and the main magnet 52 are stacked in sequence and arranged in the U iron 4. The upper end of the voice coil 51 is connected to the sound cone 1 and the elastic wave 2, and the lower end is sleeved on the auxiliary magnet 53, the washer 54 and the main magnet 52, forming an efficient magnetic system, which helps to improve the sound quality and performance of the speaker. Preferably, an arched portion 11 is provided at the connection between the sound cone 1 and the basin frame 3, which helps to improve the vibration characteristics of the sound cone 1, reduce distortion and improve sound quality. A step surface 31 is provided at the middle position of the inner side of the basin frame 3, and the edge position of the elastic wave 2 is provided on the step surface, providing a stable support point for the elastic wave 2, thereby improving the dynamic response of the speaker. Preferably, a recess 42 is provided at the center of the back side of the U iron 4 to reduce the eddy current effect, thereby reducing energy loss and improving the performance of the speaker.

[0022] Connection boards 6 are provided on both sides of the basin frame 3 , and connection ears 7 are provided on the connection boards 6 , which simplifies the connection process of the speaker and makes assembly more convenient.

[0023] When in use, since the U iron 4 is placed in the basin frame 3 and is fixed with a riveted structure, the back of the U iron 4 is flush with the back of the basin frame 3, and does not need to occupy external structural space, which significantly reduces the overall thickness of the speaker and can be suitable for light and thin products.

[0024] Based on the disclosure and teachings of the above description, those skilled in the art to which the present invention belongs can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above. Any obvious improvements, replacements, or modifications made by those skilled in the art based on the present invention fall within the scope of protection of the present invention. In addition, although some specific terms are used in this description, these terms are only for convenience of description and do not constitute any limitation to the present invention. Other structures obtained by using the same or similar structures are all within the scope of protection of the present invention.

Claims

1. A speaker with a built-in magnetic circuit structure, comprising a cone, a spring, a basin frame, a U-iron, and a magnetic module, characterized in that: The back of the basin frame is provided with a rivet interface that is compatible with the shape of the U-iron. The front of the U-iron is located in the basin frame, and the back is fixed to the rivet interface through a riveting structure. The back of the U-iron is flush with the back of the basin frame. The magnetic module is arranged in the U-iron, and the sound cone and the elastic wave are arranged on the basin frame and connected to the magnetic module.

2. The speaker built-in magnetic circuit structure according to claim 1, characterized in that: The inner side of the back edge of the U iron is provided with a riveting opening which causes the outer side of the edge to be deformed and convex and to be riveted to the riveted joint after riveting.

3. The speaker built-in magnetic circuit structure according to claim 2, characterized in that: The riveting openings are in an arc shape, and a plurality of the riveting openings are sequentially spaced along the circumferential direction of the U iron at the peripheral edge of the back side of the U iron.

4. The speaker built-in magnetic circuit structure according to claim 1, characterized in that: A recess is provided at the center of the back side of the U iron.

5. The speaker built-in magnetic circuit structure according to claim 1, characterized in that: An arched portion is provided at the connection between the sound basin and the basin frame.

6. The speaker built-in magnetic circuit structure according to claim 1, characterized in that: A step surface is provided at the middle position of the inner side of the basin frame, and the edge position of the elastic wave is arranged on the step surface.

7. The speaker built-in magnetic circuit structure according to claim 1, characterized in that: Wiring boards are provided on both sides of the basin frame, and wiring ears are provided on the wiring boards.

8. The speaker built-in magnetic circuit structure according to any one of claims 1 to 7, characterized in that: The magnetic module includes a voice coil, a main magnet, an auxiliary magnet and a washer. The auxiliary magnet, the washer and the main magnet are stacked in sequence in the U iron. The upper end of the voice coil is connected to the sound basin and the elastic wave, and the lower end is sleeved on the auxiliary magnet, the washer and the main magnet.

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