sound production unit

Abstract

This utility model discloses a sound-generating unit, including a voice coil, a magnetic circuit assembly, and a shaping support. The magnetic circuit assembly includes a yoke and a side magnetic structure disposed on the yoke. The yoke has an upwardly protruding hollow bulge. A through hole is provided on the top plate of the hollow bulge. The side magnetic structure is arranged around the hollow bulge, forming a magnetic gap between the side magnetic structure and the hollow bulge for the voice coil to move. The shaping support includes an outer mounting part, a cantilever part, an inner mounting part, and an extension arm connected sequentially from the outside to the inside. The outer mounting part is connected to the voice coil. The inner mounting part is fixed to the top surface of the top plate of the hollow bulge. The end of the extension arm away from the inner mounting part passes through the through hole and is fixed to the bottom surface of the top plate of the hollow bulge. The outer mounting part has an inner solder pad that is electrically connected to the voice coil. The extension arm has an exposed solder pad that is electrically connected to the inner solder pad. The exposed solder pad is located inside the hollow bulge. This sound-generating unit has a simple structure and excellent performance.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic converter technology, and in particular to a sound generating unit. Background Technology

[0002] As a commonly used electroacoustic transducer that converts electrical energy into sound energy, the sound-generating unit plays an indispensable role in amplification systems. With the rapid development of consumer electronics products such as mobile phones and tablets, especially large wearable electronic devices such as AR / VR, the sound-generating unit, as an important component of these products, faces increasingly higher requirements in terms of performance and size.

[0003] To correct the voice coil deviation, a shaping support is installed inside the sound unit. However, the shaping support occupies the installation space of the side magnetic structure, which reduces the overall volume of the side magnetic structure, making it difficult to improve the performance of the sound unit. In addition, existing sound units also have many components in the magnetic circuit assembly, making the assembly process of the sound unit more complicated. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a high-performance sound generating unit with a simple structure.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising:

[0006] Voice coil;

[0007] A magnetic circuit assembly, comprising a yoke and a side magnetic structure disposed on the yoke, the yoke having an upwardly protruding hollow convex bulge, the top plate of the hollow convex bulge having a through hole, the side magnetic structure being disposed around the hollow convex bulge, and a magnetic gap being formed between the side magnetic structure and the hollow convex bulge for the voice coil to move.

[0008] A shaping support includes an outer mounting part, a cantilever part, an inner mounting part, and an extension arm connected sequentially from the outside to the inside. The outer mounting part is connected to the voice coil. The inner mounting part is fixed to the top surface of the top plate of the hollow convex shroud. One end of the extension arm away from the inner mounting part passes through the through hole and is fixed to the bottom surface of the top plate of the hollow convex shroud. The outer mounting part is provided with an inner solder pad that is electrically connected to the voice coil. The extension arm is provided with an exposed solder pad that is electrically connected to the inner solder pad. The exposed solder pad is located inside the hollow convex shroud.

[0009] Furthermore, the external mounting part is generally in the shape of a ring frame.

[0010] Furthermore, the inner pad is located at the corner of the outer mounting portion.

[0011] Furthermore, the external mounting portion is connected to the bottom surface of the voice coil.

[0012] Furthermore, the inner mounting part is generally in the shape of a ring frame.

[0013] Furthermore, the inner mounting part is generally rectangular in shape, and at least one of the long axis side and the short axis side of the inner mounting part is connected to the cantilever part.

[0014] Furthermore, the edge magnetic structure is in the form of a continuous ring frame.

[0015] Furthermore, the edge magnetic structure includes multiple edge magnetic components, which are arranged in a ring-like shape, with adjacent edge magnetic components close to each other.

[0016] Furthermore, two adjacent edge magnetic components are in contact with each other.

[0017] Furthermore, the outer edge of the yoke has an upwardly bent vertical wall, the vertical wall being generally ring-shaped, and also includes a diaphragm assembly connected to the voice coil, the outer edge of the diaphragm assembly being connected to the vertical wall.

[0018] The beneficial effects of this utility model are as follows: the shaping support plate in this sound unit is located inside the voice coil, which does not occupy the installation space of the side magnetic structure, so that the total volume of the side magnetic structure can be set to be larger, which is conducive to improving the performance of the sound unit. In addition, the magnetic circuit assembly of this sound unit uses a hollow convex hull to replace the central magnetic structure, which is conducive to simplifying the construction of the magnetic circuit assembly, making the overall structure of the sound unit simpler and facilitating the assembly and production of the sound unit. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the sound-generating unit;

[0020] Figure 2 This is a cross-sectional view of the sound-generating unit;

[0021] Figure 3 This is a schematic diagram of the internal structure of the sound-generating unit.

[0022] Label Explanation:

[0023] 1. Diaphragm assembly;

[0024] 2. Voice coil;

[0025] 3. Magnetic circuit assembly; 31. Yoke; 311. Vertical wall; 32. Edge magnetic structure; 33. Hollow convex hull; 331. Perforation;

[0026] 4. Shaping support plate; 41. External mounting part; 42. Cantilever part; 43. Internal mounting part; 44. Extension arm; 45. Internal solder pad; 46. Exposed solder pad. Detailed Implementation

[0027] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0028] Please refer to Figures 1 to 3 The sound-generating unit includes a voice coil 2, a magnetic circuit assembly 3, and a shaping support 4. The magnetic circuit assembly 3 includes a yoke 31 and a side magnetic structure 32 disposed on the yoke 31. The yoke 31 has an upwardly protruding hollow convex 33. The top plate of the hollow convex 33 is provided with a through hole 331. The side magnetic structure 32 is arranged around the hollow convex 33, and a magnetic gap is formed between the side magnetic structure 32 and the hollow convex 33 to allow the voice coil 2 to move. The shaping support 4 includes an outer mounting part 41 and a cantilever part 42 connected sequentially from the outside to the inside. The device comprises an inner mounting part 43 and an extension arm 44. The outer mounting part 41 is connected to the voice coil 2. The inner mounting part 43 is fixed to the top surface of the top plate of the hollow convex 33. One end of the extension arm 44 away from the inner mounting part 43 passes through the through hole 331 and is fixed to the bottom surface of the top plate of the hollow convex 33. The outer mounting part 41 is provided with an inner solder pad 45 that is electrically connected to the voice coil 2. The extension arm 44 is provided with an exposed solder pad 46 that is electrically connected to the inner solder pad 45. The exposed solder pad 46 is located inside the hollow convex 33.

[0029] As can be seen from the above description, the beneficial effects of this utility model are as follows: the shaping support plate 4 in this sound-generating unit is located inside the voice coil 2, which does not occupy the installation space of the side magnetic structure 32, so that the total volume of the side magnetic structure 32 can be set to be larger, which is conducive to improving the performance of the sound-generating unit. Furthermore, the magnetic circuit component 3 of this sound-generating unit uses a hollow convex hull 33 to replace the central magnetic structure, which is conducive to simplifying the construction of the magnetic circuit component 3, making the overall structure of the sound-generating unit simpler, and facilitating the assembly and production of the sound-generating unit.

[0030] Furthermore, the external mounting portion 41 is generally in the shape of a ring frame.

[0031] Furthermore, the inner pad 45 is located at the corner of the outer mounting portion 41.

[0032] Furthermore, the external mounting part 41 is connected to the bottom surface of the voice coil 2.

[0033] Furthermore, the inner mounting portion 43 is generally in the shape of a ring frame.

[0034] As can be seen from the above description, the shaping support 4 is an integral structure, which is conducive to further simplifying the structure of the sound unit.

[0035] Furthermore, the inner mounting portion 43 is generally rectangular, and at least one of the long axis side and the short axis side of the inner mounting portion 43 is connected to the cantilever portion 42.

[0036] As can be seen from the above description, the number and position of the cantilever section 42 can be set as needed, which helps to enrich the diversity of the shaping support 4.

[0037] Furthermore, the edge magnetic structure 32 is in the shape of a continuous ring frame.

[0038] As can be seen from the above description, the large overall volume of the edge magnetic structure 32 is beneficial for enhancing the magnetic field strength of the sound unit and improving the performance of the sound unit.

[0039] Furthermore, the edge magnetic structure 32 includes a plurality of edge magnetic components, which are arranged in a ring-like shape, with adjacent edge magnetic components close to each other.

[0040] As can be seen from the above description, there are various options for the specific construction of the edge magnetic structure 32, which helps to enrich the diversity of the sound generating unit.

[0041] Furthermore, two adjacent edge magnetic components are in contact with each other.

[0042] As can be seen from the above description, the large overall volume of the edge magnetic structure 32 is beneficial to improving the performance of the sound unit.

[0043] Furthermore, the outer edge of the yoke 31 has an upwardly bent vertical wall 311, the vertical wall 311 is generally in the shape of a ring frame, and also includes a diaphragm assembly 1 connected to the voice coil 2, the outer edge of the diaphragm assembly 1 being connected to the vertical wall 311.

[0044] As can be seen from the above description, since the exposed solder pad 46 of the shaping support plate 4 is located inside the hollow protrusion 33, there is no need to leave any space on the outside of the sound unit. Therefore, the vertical wall 311 can replace the frame in a ring to bond the diaphragm, saving the frame material, further simplifying the structure of the sound unit, facilitating the assembly and production of the sound unit, and helping to reduce the manufacturing cost of the sound unit.

[0045] Please refer to Figures 1 to 3The first embodiment of this utility model is as follows: a sound-generating unit, including a diaphragm assembly 1, a voice coil 2, a magnetic circuit assembly 3, and a shaping support 4. The magnetic circuit assembly 3 includes a yoke 31 and a side magnetic structure 32 disposed on the yoke 31. The yoke 31 has an upwardly protruding hollow convex 33. The top plate of the hollow convex 33 is provided with a through hole 331. The side magnetic structure 32 is disposed around the hollow convex 33. A magnetic gap is formed between the side magnetic structure 32 and the hollow convex 33 for the voice coil 2 to move. The outer edge of the yoke 31 has an upwardly bent and extended vertical wall 311. The vertical wall 311 is generally in the shape of a ring frame. The diaphragm assembly 1 is connected to the voice coil 2, and the outer edge of the diaphragm assembly 1 is connected to the vertical wall 311. Wall 311; The shaping support 4 includes an outer mounting part 41, a cantilever part 42, an inner mounting part 43 and an extension arm 44 connected sequentially from the outside to the inside. The outer mounting part 41 is connected to the voice coil 2. Preferably, the outer mounting part 41 is connected to the bottom surface of the voice coil 2. The inner mounting part 43 is fixed to the top surface of the top plate of the hollow bulge 33. One end of the extension arm 44 away from the inner mounting part 43 passes through the through hole 331 and is fixed to the bottom surface of the top plate of the hollow bulge 33. The outer mounting part 41 is provided with an inner solder pad 45 that is electrically connected to the voice coil 2. The extension arm 44 is provided with an exposed solder pad 46 that is electrically connected to the inner solder pad 45. The exposed solder pad 46 is located inside the hollow bulge 33.

[0046] In one or more embodiments, the outer mounting portion 41 is generally in the shape of a ring frame, and the inner pad 45 is located at the corner of the outer mounting portion 41.

[0047] In some embodiments, the inner mounting portion 43 is generally ring-shaped; optionally, the inner mounting portion 43 is generally rectangular. At least one of the major axis and minor axis of the inner mounting portion 43 is connected to the cantilever portion 42. In this embodiment, the major axis and minor axis of the inner mounting portion 43 are respectively connected to the cantilever portion 42. As a preferred embodiment, the shaping support 4 has a planar symmetrical structure or a central symmetrical structure.

[0048] Preferably, the edge magnetic structure 32 is in the shape of a continuous ring frame. In this embodiment, the edge magnetic structure 32 includes an annular edge magnet and an annular washer. The annular edge magnet is an integral structural component, and the annular washer is an integral structural component. This not only allows the overall volume of the edge magnetic structure 32 to be larger, but also reduces the number of assembly parts of the sound unit, making it easier to assemble and produce the sound unit.

[0049] In other embodiments, the edge magnetic structure 32 includes a plurality of edge magnetic components, which are arranged in a ring-like shape, with adjacent edge magnetic components close to each other. In this case, it is preferable that adjacent edge magnetic components are in contact with each other; specifically, at least one end face of one edge magnetic component contacts the side wall of another adjacent edge magnetic component.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sound-generating unit, characterized in that, include Voice coil; A magnetic circuit assembly, comprising a yoke and a side magnetic structure disposed on the yoke, the yoke having an upwardly protruding hollow convex bulge, the top plate of the hollow convex bulge having a through hole, the side magnetic structure being disposed around the hollow convex bulge, and a magnetic gap being formed between the side magnetic structure and the hollow convex bulge for the voice coil to move. A shaping support includes an outer mounting part, a cantilever part, an inner mounting part, and an extension arm connected sequentially from the outside to the inside. The outer mounting part is connected to the voice coil. The inner mounting part is fixed to the top surface of the top plate of the hollow convex shroud. One end of the extension arm away from the inner mounting part passes through the through hole and is fixed to the bottom surface of the top plate of the hollow convex shroud. The outer mounting part is provided with an inner solder pad that is electrically connected to the voice coil. The extension arm is provided with an exposed solder pad that is electrically connected to the inner solder pad. The exposed solder pad is located inside the hollow convex shroud.

2. The sound-generating unit according to claim 1, characterized in that, The external mounting part is generally in the shape of a ring frame.

3. The sound-generating unit according to claim 2, characterized in that, The inner pad is located at the corner of the outer mounting part.

4. The sound-generating unit according to claim 1, characterized in that, The external mounting part is connected to the bottom surface of the voice coil.

5. The sound-generating unit according to claim 1, characterized in that, The internal mounting section is generally in the shape of a ring frame.

6. The sound-generating unit according to claim 5, characterized in that, The inner mounting part is generally rectangular, and at least one of the long axis side and the short axis side of the inner mounting part is connected to the cantilever part.

7. The sound-generating unit according to claim 1, characterized in that, The edge magnetic structure is in the shape of a continuous ring frame.

8. The sound-generating unit according to claim 1, characterized in that, The edge magnetic structure includes multiple edge magnetic components, which are arranged in a ring-like shape with adjacent edge magnetic components close to each other.

9. The sound-generating unit according to claim 8, characterized in that, The two adjacent edge magnetic components are in contact with each other.

10. The sound-generating unit according to claim 1, characterized in that, The outer edge of the yoke has an upwardly curved vertical wall, which is generally in the shape of a ring frame. It also includes a diaphragm assembly that connects to the voice coil, with the outer edge of the diaphragm assembly connected to the vertical wall.

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