Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a basin stand, a vibration assembly, a shaping support chip and a magnetic circuit assembly, and is characterized in that the vibration assembly comprises a diaphragm assembly and a voice coil, and the diaphragm assembly is connected with the voice coil and the basin stand; the shaping support chip comprises an inner mounting part, a cantilever part and an outer mounting part which are connected in sequence, and the inner mounting part is fixedly connected with the voice coil; the magnetic circuit assembly is connected with the basin frame and comprises a yoke and a plurality of edge magnetic structures, the plurality of edge magnetic structures are enclosed to form an annular frame structure with a vacant area at the corner, the cantilever part is located in the vacant area, the edge magnetic structure comprises edge magnetic steel and an edge washer, the bottom surface of the edge magnetic steel is connected with the yoke, and the top surface of the edge magnetic steel is connected with the edge washer. The interface of the edge washer and the edge magnetic steel is provided with an installation groove, and at least part of the outer installation part is installed in the installation groove. The sounding unit is compact and novel in structure, the shaping support chip occupies smaller space, the size of the edge magnetic structure is increased, the BL value of the sounding unit is improved, and the performance of the sounding unit is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit. Background Art

[0002] As a common electroacoustic transducer device that converts electrical energy into sound energy, the sound unit plays an indispensable role in the sound amplification system.

[0003] In pursuit of high performance of the sound unit, existing sound units usually use a shaped support as the conductive part of the sound unit. However, the shaped support occupies a large internal space of the sound unit (as shown in the Chinese utility model patent application number 202221548086.8), which has a significant impact on the magnetic circuit components. As a result, it is difficult to improve performance without changing the total volume of the sound unit. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-performance compact sound unit.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a sound unit comprising:

[0006] basin rack;

[0007] A vibration assembly, the vibration assembly comprising a diaphragm assembly and a voice coil, the diaphragm assembly connecting the voice coil and the basin frame;

[0008] A shaped support, the shaped support comprising an inner mounting portion, a cantilever portion, and an outer mounting portion connected in sequence, the inner mounting portion being fixedly connected to the voice coil;

[0009] A magnetic circuit assembly, wherein the magnetic circuit assembly is connected to the basin frame, and the magnetic circuit assembly includes a yoke and multiple edge magnetic structures. The multiple edge magnetic structures enclose a ring frame structure with a vacant area at the corner, and the cantilever portion is located in the vacant area. The edge magnetic structure includes an edge magnetic steel and a edge washer. The bottom surface of the edge magnetic steel is connected to the yoke, and the top surface of the edge magnetic steel is connected to the edge washer. The interface between the edge washer and the edge magnetic steel is provided with an installation groove, and at least a part of the area of ​​the external mounting portion is installed in the installation groove.

[0010] Furthermore, the entire area of ​​the mounting groove is located on the edge washer, or the entire area of ​​the mounting groove is located on the edge magnetic steel.

[0011] Furthermore, a portion of the mounting groove is located on the edge washer, and another portion of the mounting groove is located on the edge magnetic steel.

[0012] Furthermore, the mounting groove is arranged away from the voice coil.

[0013] Furthermore, the mounting groove is provided on the side magnetic structure located on the short side of the sound unit.

[0014] Furthermore, the mounting groove is provided on the side magnetic structure located on the long side of the sound unit.

[0015] Furthermore, an inner pad is provided on the inner mounting portion, an outer pad electrically connected to the inner pad is provided on the outer mounting portion, and the voice coil is welded and connected to the inner pad.

[0016] Furthermore, the basin frame has a corner guard provided corresponding to the vacant area, and the cantilever portion is located on the inner side of the corner guard.

[0017] Furthermore, the basin frame is made of metal, and the corner guard is welded to the yoke.

[0018] Furthermore, the mounting grooves are respectively provided at both ends of the edge magnetic structure having the mounting grooves.

[0019] The beneficial effects of the present invention are as follows: the structure of the sound unit is compact and novel, and the vacant corner areas of the magnetic circuit assembly are all left to the cantilever portion of the shaped support, so that the shape and length of the cantilever portion can be more optimized and the reliability requirements can be better guaranteed; the external mounting portion of the shaped support is fixed in the mounting groove of the side magnetic structure. Compared with the technical solution of the prior art in which the external mounting portion is fixed to the basin frame, the shaped support occupies less space, thereby allowing more space inside the sound unit to set the side magnetic structure, which is conducive to increasing the volume of the side magnetic structure, improving the BL value of the sound unit, and thus improving the performance of the sound unit. Moreover, the mounting groove is located at the interface between the side magnetic steel and the side washer, and the mounting groove only occupies a small amount of the side magnetic steel volume or even no volume of the side magnetic steel, so that the volume of the side magnetic steel can be greatly increased, thereby improving the performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional view of the sound unit of the first embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the sound unit of the first embodiment of the present invention. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of the sound unit of the first embodiment of the present invention. Figure 2 .

[0023] Description of labels:

[0024] 1. Basin stand; 11. Corner guard;

[0025] 21. Diaphragm assembly; 22. Voice coil;

[0026] 3. Shaped support; 31. Inner mounting portion; 32. Cantilever portion; 33. Outer mounting portion; 331. Extension portion; 332. Outer pad;

[0027] 41. Yoke; 42. Center magnetic structure; 43. Side magnetic structure; 431. Side magnet; 432. Side washer; 433. Mounting slot; 44. Vacant area. DETAILED DESCRIPTION

[0028] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0029] Please refer to Figures 1 to 3 , sound unit, including:

[0030] Basin rack 1;

[0031] A vibration assembly, comprising a diaphragm assembly 21 and a voice coil 22, wherein the diaphragm assembly 21 connects the voice coil 22 and the basin frame 1;

[0032] The support plate 3 includes an inner mounting portion 31, a cantilever portion 32, and an outer mounting portion 33 connected in sequence, wherein the inner mounting portion 31 is fixedly connected to the voice coil 22;

[0033] A magnetic circuit assembly is connected to the basin frame 1, and the magnetic circuit assembly includes a yoke 41 and multiple edge magnetic structures 43. The multiple edge magnetic structures 43 enclose a ring frame structure with a vacant area 44 at the corner. The cantilever portion 32 is located in the vacant area 44. The edge magnetic structure 43 includes an edge magnetic steel 431 and a edge washer 432. The bottom surface of the edge magnetic steel 431 is connected to the yoke 41, and the top surface of the edge magnetic steel 431 is connected to the edge washer 432. The interface between the edge washer 432 and the edge magnetic steel 431 is provided with an installation groove 433, and at least a part of the area of ​​the external mounting portion 33 is installed in the installation groove 433.

[0034] As can be seen from the above description, the beneficial effects of the present invention are as follows: the sound unit has a compact and novel structure. The vacant corner area 44 of the magnetic circuit assembly is entirely reserved for the cantilever portion 32 of the fixed support 3, allowing for a more optimized design of the shape and length of the cantilever portion 32, thereby better ensuring reliability requirements. The external mounting portion 33 of the fixed support 3 is fixed within the mounting groove 433 of the side magnetic structure 43. Compared to the prior art solution of fixing the external mounting portion 33 to the basin frame 1, the fixed support 3 occupies less space, thereby leaving more space inside the sound unit for the side magnetic structure 43, which is conducive to increasing the volume of the side magnetic structure 43, improving the BL value of the sound unit, and thus improving the performance of the sound unit. Moreover, the mounting groove 433 is located at the interface between the side magnetic steel 431 and the side washer 432. The mounting groove 433 only occupies a small amount of the side magnetic steel 431, or even no volume at all, thereby significantly increasing the volume of the side magnetic steel 431, thereby improving the performance of the sound unit.

[0035] Furthermore, the entire area of ​​the mounting slot 433 is located on the edge washer 432 , or the entire area of ​​the mounting slot 433 is located on the edge magnetic steel 431 .

[0036] Furthermore, a portion of the mounting groove 433 is located on the edge washer 432 , and another portion of the mounting groove 433 is located on the edge magnetic steel 431 .

[0037] As can be seen from the above description, there are a variety of options for the specific arrangement of the mounting slot 433, which is conducive to enriching the diversity of the sound unit.

[0038] Furthermore, the mounting groove 433 is arranged away from the voice coil 22 .

[0039] From the above description, it can be seen that the installation groove 433 is located on the side of the side magnetic structure 43 away from the voice coil 22, which can greatly reduce the impact of the existence of the installation groove 433 on the side magnetic structure 43, so that the magnetic gap inside the side magnetic structure 43 can gather more magnetic flux lines, thereby making the sound unit have better acoustic performance.

[0040] Furthermore, the mounting groove 433 is provided on the side magnetic structure 43 located on the short side of the sound unit.

[0041] Furthermore, the mounting groove 433 is provided on the side magnetic structure 43 located on the long side of the sound unit.

[0042] It can be seen from the above description that the specific position of the installation slot 433 can be set as needed.

[0043] Furthermore, an inner solder pad is provided on the inner mounting portion 31 , an outer solder pad 332 electrically connected to the inner solder pad is provided on the outer mounting portion 33 , and the voice coil 22 is welded and connected to the inner solder pad.

[0044] As can be seen from the above description, the voice coil 22 can be connected to the external power supply through the support plate 3, so that the support plate 3 not only supports the voice coil 22 but also conducts the power to the voice coil 22.

[0045] Furthermore, the basin stand 1 has a corner guard 11 provided corresponding to the vacant area 44 , and the cantilever portion 32 is located on the inner side of the corner guard 11 .

[0046] It can be seen from the above description that the corner protector 11 can effectively protect the cantilever portion 32 and prevent the cantilever portion 32 from being damaged.

[0047] Furthermore, the basin frame 1 is made of metal, and the corner guard 11 is welded to the yoke 41 .

[0048] As can be seen from the above description, the welding of the basin frame 1 made of hardware material and the yoke 41 is beneficial to improving the overall strength of the sound unit, thereby ensuring the structural stability of the sound unit.

[0049] Furthermore, the side magnetic structure 43 having the mounting grooves 433 is provided with the mounting grooves 433 at both ends thereof.

[0050] Furthermore, the two mounting grooves 433 on the same edge magnetic structure 43 are symmetrically arranged.

[0051] From the above description, it can be seen that the edge magnetic structure 43 can bear the pulling force from the shaping support piece 3 in a more balanced manner.

[0052] Example 1

[0053] Please refer to Figures 1 to 3, the utility model embodiment 1 is: a sound unit, including a basin 1, a vibration component, a shaped support 3 and a magnetic circuit component, the vibration component includes a diaphragm component 21 and a voice coil 22, the diaphragm component 21 connects the voice coil 22 and the basin 1; the shaped support 3 includes an inner mounting portion 31, a cantilever portion 32 and an outer mounting portion 33 connected in sequence, the inner mounting portion 31 is fixedly connected to the voice coil 22; the magnetic circuit component is connected to the basin 1, the magnetic circuit component includes a yoke 41, a central magnetic structure 42 and a plurality of side magnetic structures 43, a magnetic gap is formed between the central magnetic structure 42 and the side magnetic structure 43 for the movement of the voice coil 22, the central magnetic structure 4 2 includes a central magnetic steel and a central washer, the bottom surface of the central magnetic steel is connected to the yoke 41, and the top surface of the central magnetic steel is connected to the central washer, and a plurality of side magnetic structures 43 are enclosed to form a ring frame structure with a vacant area 44 at the corner, and the cantilever portion 32 is located in the vacant area 44, and the side magnetic structure 43 includes a side magnetic steel 431 and a side washer 432, the bottom surface of the side magnetic steel 431 is connected to the yoke 41, and the top surface of the side magnetic steel 431 is connected to the side washer 432, and the interface between the side washer 432 and the side magnetic steel 431 is provided with a mounting groove 433, and at least a portion of the area of ​​the outer mounting portion 33 is mounted in the mounting groove 433.

[0054] In this embodiment, the entire area of ​​the mounting slot 433 is located on the side washer 432. This allows the side magnetic steel 431 to be sufficiently large, thereby improving the performance of the sound unit. In other embodiments, the entire area of ​​the mounting slot 433 can also be located on the side magnetic steel 431. In this case, the side washer 432 is sufficiently large to achieve a better magnetic conductivity effect. Of course, it is also possible to locate a portion of the mounting slot 433 on the side washer 432 and another portion of the mounting slot 433 on the side magnetic steel 431.

[0055] Preferably, the mounting groove 433 is arranged away from the voice coil 22 . In this embodiment, the mounting groove 433 communicates with the end surface and the outer surface of the edge magnetic structure 43 .

[0056] The sound unit is rectangular in shape. In this embodiment, the mounting slot 433 is provided on the side magnetic structure 43 located on the short side of the sound unit. In other embodiments, the mounting slot 433 is provided on the side magnetic structure 43 located on the long side of the sound unit.

[0057] Specifically, the inner mounting portion 31 is provided with an inner solder pad, and the outer mounting portion 33 is provided with an outer solder pad 332 electrically conductively connected to the inner solder pad. The voice coil 22 is soldered to the inner solder pad. In this embodiment, there are two support rails 3, one located at each end of the sound unit. The outer mounting portion 33 of one support rail 3 has an extension 331 exposed from the sound unit, and the outer solder pad 332 is provided on the extension 331.

[0058] The side magnetic structure 43 having the mounting groove 433 is provided with the mounting groove 433 at both ends respectively. That is to say, for a side magnetic structure 43, it either has no mounting groove 433 or has the mounting groove 433 at both ends. Preferably, the two mounting grooves 433 on the same side magnetic structure 43 are symmetrically arranged.

[0059] To protect the cantilever portion 32 of the shaping support 3, the basin frame 1 has a corner guard 11 corresponding to the vacant area 44. The cantilever portion 32 is located inside the corner guard 11. In this embodiment, the corner guard 11 is L-shaped.

[0060] In some embodiments, the basin frame 1 may be a plastic structural member made of plastic. In this embodiment, the basin frame 1 is made of metal, and preferably, the corner guard 11 is welded to the yoke 41 .

[0061] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sound unit, characterized in that: include basin rack; A vibration assembly, the vibration assembly comprising a diaphragm assembly and a voice coil, the diaphragm assembly connecting the voice coil and the basin frame; A shaped support, the shaped support comprising an inner mounting portion, a cantilever portion, and an outer mounting portion connected in sequence, the inner mounting portion being fixedly connected to the voice coil; A magnetic circuit assembly, wherein the magnetic circuit assembly is connected to the basin frame, and the magnetic circuit assembly includes a yoke and multiple edge magnetic structures. The multiple edge magnetic structures enclose a ring frame structure with a vacant area at the corner, and the cantilever portion is located in the vacant area. The edge magnetic structure includes an edge magnetic steel and a edge washer. The bottom surface of the edge magnetic steel is connected to the yoke, and the top surface of the edge magnetic steel is connected to the edge washer. The interface between the edge washer and the edge magnetic steel is provided with an installation groove, and at least a part of the area of ​​the external mounting portion is installed in the installation groove.

2. The sound unit according to claim 1, characterized in that The entire area of ​​the mounting groove is located on the edge washer, or the entire area of ​​the mounting groove is located on the edge magnetic steel.

3. The sound unit according to claim 1, wherein: A portion of the mounting groove is located on the edge washer, and another portion of the mounting groove is located on the edge magnetic steel.

4. The sound unit according to claim 1, characterized in that The mounting groove is arranged away from the voice coil.

5. The sound unit according to claim 1, characterized in that: The mounting groove is provided on the side magnetic structure located on the short side of the sound unit.

6. The sound unit according to claim 1, characterized in that The mounting groove is provided on the side magnetic structure located on the long side of the sound unit.

7. The sound unit according to claim 1, characterized in that An inner solder pad is provided on the inner mounting portion, an outer solder pad electrically connected to the inner solder pad is provided on the outer mounting portion, and the voice coil is welded and connected to the inner solder pad.

8. The sound unit according to claim 1, wherein: The basin frame has a corner guard arranged corresponding to the vacant area, and the cantilever portion is located on the inner side of the corner guard.

9. The sound unit according to claim 8, characterized in that: The material of the basin frame is metal, and the corner guard is welded to the yoke.

10. The sound unit according to claim 1, characterized in that: The mounting grooves are respectively provided at both ends of the edge magnetic structure having the mounting grooves.

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