Sound production unit

Abstract

The utility model discloses a sounding unit, comprising a diaphragm assembly, a voice coil and a magnetic circuit assembly, and the diaphragm assembly is provided with a via hole; the voice coil comprises a body and a lead, the body is connected with the diaphragm assembly, the lead comprises a fixed section, a deformation section and a conduction section which are connected in sequence, the fixed section is fixed on the diaphragm assembly, one end of the fixed section is connected with the body, and the other end of the fixed section penetrates through the hole and is connected with the deformation section; the magnetic circuit assembly is provided with a magnetic gap corresponding to the body. The sound production unit is novel in structure, the lead of the voice coil can have enough suspension length and does not occupy the space outside the body of the voice coil while a large-voice-coil large-amplitude design framework is adopted, and the performance of the sound production unit is further improved. The deformation section of the lead does not need to occupy the internal space of the sound production unit, so that the total volume of the magnetic circuit assembly can be set to be larger, and the BL value of the sound production unit is improved. The specific structure of the sound production unit has rich diversity.

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] To improve the performance of the sound unit, existing technologies often use large voice coils and large-amplitude design architectures. However, the leads of the voice coils of large-amplitude sound units must have sufficient suspension length to avoid stress concentration and the possibility of wire breakage. The leads of the voice coils are generally designed to be outside the voice coil body. When the voice coil is enlarged, there is insufficient space outside the voice coil body to place the side magnets or leads, resulting in the inability to further improve the performance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-performance sound unit.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a sound unit comprising:

[0005] A diaphragm assembly, wherein the diaphragm assembly is provided with a through hole;

[0006] A voice coil, the voice coil comprising a body and a lead, the body being connected to the diaphragm assembly, the lead comprising a fixed section, a deformable section, and a conductive section connected in sequence, the fixed section being fixed to the diaphragm assembly, one end of the fixed section being connected to the body, and the other end of the fixed section passing through the through hole and connected to the deformable section;

[0007] A magnetic circuit component is provided, wherein the magnetic circuit component has a magnetic gap arranged corresponding to the body.

[0008] Furthermore, the via hole is provided in a central area of the diaphragm assembly.

[0009] Furthermore, the magnetic circuit assembly has a first avoidance groove for avoiding the fixed section.

[0010] Furthermore, the deformation section is spiral or wavy.

[0011] Furthermore, it further includes a first colloid, and the fixing section is fixedly connected to the diaphragm assembly through the first colloid.

[0012] Furthermore, the first colloid covers the entire area of the fixing section located on the inner side of the diaphragm assembly.

[0013] Furthermore, the first colloid covers a portion of the fixing section located on the inner side of the diaphragm assembly and is arranged close to the via hole.

[0014] Furthermore, the magnetic circuit component has a second avoidance groove for avoiding the first colloid.

[0015] Furthermore, the first colloid blocks the via hole.

[0016] Furthermore, it further includes a second colloid, which is located on the outside of the diaphragm assembly, and the other end of the fixed section is fixedly connected to the diaphragm assembly through the second colloid.

[0017] The beneficial effects of this utility model are: the novel structure of the sound unit, while adopting a large voice coil and large amplitude design architecture, also allows the voice coil lead to have sufficient hanging length and does not occupy the space outside the voice coil body, which further improves the performance of the sound unit. The deformable section of the lead does not occupy the internal space of the sound unit, allowing the total volume of the magnetic circuit assembly to be set larger, thereby improving the BL value of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the overall structure of the sound-emitting unit according to the first embodiment of the present invention;

[0019] Figure 2 This is an exploded view of the sound unit of the first embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the sound unit of the first embodiment of the present invention;

[0021] Figure 4 This is a structural diagram of part of the sound unit of the first embodiment of the present invention.

[0022] Description of labels:

[0023] 1. Basin rack;

[0024] 2. Diaphragm assembly; 21. Via hole; 22. Sound membrane; 23. Dome;

[0025] 3. Voice coil; 31. Body; 32. Lead wire; 321. Fixed section; 322. Deformable section; 323. Conductive section;

[0026] 4. Magnetic circuit assembly; 41. Yoke; 42. Center magnetic structure; 421. Center magnetic steel; 422. Center washer; 43. Side magnetic structure; 431. Side magnetic steel; 432. Side washer; 44. First avoidance slot; 45. Second avoidance slot;

[0027] 5. First colloid;

[0028] 6. Skeleton. DETAILED DESCRIPTION

[0029] 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.

[0030] Please refer to Figures 1 to 4 , sound unit, including:

[0031] A diaphragm assembly 2, wherein the diaphragm assembly 2 is provided with a through hole 21;

[0032] The voice coil 3 includes a body 31 and a lead 32. The body 31 is connected to the diaphragm assembly 2. The lead 32 includes a fixed section 321, a deformable section 322, and a conductive section 323 that are connected in sequence. The fixed section 321 is fixed to the diaphragm assembly 2. One end of the fixed section 321 is connected to the body 31, and the other end of the fixed section 321 passes through the through hole 21 and connects to the deformable section 322.

[0033] The magnetic circuit component 4 has a magnetic gap corresponding to the main body 31 .

[0034] As can be seen from the foregoing description, the beneficial effects of the present invention are: The novel structure of the sound unit utilizes a large voice coil 3 with a large amplitude design. While this design allows for sufficient overhang length for the lead wire 32 of the voice coil 3, it also does not occupy space outside the body 31 of the voice coil 3, further enhancing the performance of the sound unit. The deformable section 322 of the lead wire 32 does not occupy space within the sound unit, allowing the total volume of the magnetic circuit assembly 4 to be increased, thereby improving the BL value of the sound unit.

[0035] Furthermore, the through hole 21 is provided in the central area of the diaphragm assembly 2 .

[0036] As can be seen from the above description, the via hole 21 disposed in the central area of the diaphragm assembly 2 can make the diaphragm assembly 2 more balanced in force, and at the same time, facilitate the connection of the conductive section 323 to an external power supply.

[0037] Furthermore, the magnetic circuit component 4 has a first avoidance groove 44 for avoiding the fixed section 321 .

[0038] As can be seen from the above description, the provision of the first avoidance groove 44 can prevent the lead wire 32 from colliding with the central magnetic structure 42 and generating noise when the voice coil 3 vibrates with a large amplitude.

[0039] Furthermore, the deformation section 322 is spiral or wavy.

[0040] As can be seen from the above description, the specific shape of the deformation section 322 can be set as needed.

[0041] Furthermore, a first colloid 5 is included, and the fixing section 321 is fixedly connected to the diaphragm assembly 2 via the first colloid 5 .

[0042] It can be seen from the above description that the connection method between the fixing section 321 and the diaphragm assembly 2 is simple and reliable.

[0043] Furthermore, the first colloid 5 covers the entire area of the fixing section 321 located inside the diaphragm assembly 2 .

[0044] It can be seen from the above description that the fixing section 321 and the diaphragm assembly 2 can be connected more stably.

[0045] Furthermore, the first colloid 5 covers a portion of the fixing section 321 located on the inner side of the diaphragm assembly 2 and is disposed close to the through hole 21 .

[0046] From the above description, it can be seen that the amount of the first colloid 5 used is small, which can reduce the manufacturing cost of the sound unit.

[0047] Furthermore, the magnetic circuit component 4 has a second avoidance groove 45 for avoiding the first colloid 5 .

[0048] As can be seen from the above description, the second avoidance groove 45 can prevent the first colloid 5 from colliding with the central magnetic structure 42 and generating noise when the voice coil 3 vibrates with a large amplitude.

[0049] Furthermore, the first colloid 5 blocks the via hole 21 .

[0050] As can be seen from the above description, the first colloid 5 not only serves to connect the fixed section 321 and the diaphragm assembly 2 , but also serves to improve the sealing performance of the sound unit, thus achieving multiple uses of one object.

[0051] Furthermore, a second colloid is included, and the second colloid is located on the outside of the diaphragm assembly 2 , and the other end of the fixing section 321 is fixedly connected to the diaphragm assembly 2 through the second colloid.

[0052] As can be seen from the above description, using the second colloid to fix the fixing section 321 does not require the magnetic circuit component 4 to additionally provide a second avoidance groove 45, so that the overall volume of the magnetic circuit component 4 can be set larger, thereby greatly improving the performance of the sound unit.

[0053] Example 1

[0054] Please refer to Figures 1 to 4, Embodiment 1 of the present invention is: a sound unit, including a basin frame 1, a diaphragm assembly 2, a voice coil 3 and a magnetic circuit assembly 4, the diaphragm assembly 2 and the magnetic circuit assembly 4 are respectively connected to the basin frame 1, the diaphragm assembly 2 is provided with a through hole 21, the voice coil 3 includes a body 31 and a lead 32, the body 31 is connected to the diaphragm assembly 2, the lead 32 includes a fixed section 321, a deformation section 322 and a conductive section 323 connected in sequence, the fixed section 321 is fixed on the diaphragm assembly 2, one end of the fixed section 321 is connected to the body 31, and the other end of the fixed section 321 passes through the through hole 21 and is connected to the deformation section 322, the deformation section 322 is spiral, wavy or other shapes, and can be set according to actual needs; the magnetic circuit assembly 4 has a magnetic gap corresponding to the body 31.

[0055] In this embodiment, the magnetic circuit assembly 4 includes a yoke 41 and a central magnetic structure 42 and a side magnetic structure 43 respectively provided on the yoke 41. The magnetic gap is formed between the central magnetic structure 42 and the side magnetic structure 43. The yoke 41 is indirectly connected to the basin frame 1 through the side magnetic structure 43. The side magnetic structure 43 includes a side magnetic steel 431 and a side washer 432. The bottom 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 / or the basin frame 1. The side washer 432 is connected to the basin frame 1. In order to further improve the performance of the sound unit, preferably, the side magnetic steel 431 and the side washer 432 are respectively ring-shaped.

[0056] In other embodiments, a flange may be provided on the yoke 41 to replace the edge magnetic structure 43 , and the flange is formed by bending a partial area of the yoke 41 .

[0057] The through hole 21 is provided in the central area of the diaphragm assembly 2 . In this embodiment, the diaphragm assembly 2 includes a sound membrane 22 and a dome 23 . The sound membrane 22 connects the dome 23 and the basin frame 1 . The through hole 21 is provided on the dome 23 .

[0058] In order to enable the diaphragm assembly 2 to achieve a larger amplitude, the magnetic circuit assembly 4 has a first avoidance groove 44 for avoiding the fixed section 321. The first avoidance groove 44 can be a pressed groove or a milled groove. Specifically, the central magnetic structure 42 includes a central magnetic steel 421 and a central washer 422. The bottom surface of the central magnetic steel 421 is connected to the yoke 41, and the top surface of the central magnetic steel 421 is connected to the bottom surface of the central washer 422. The first avoidance groove 44 is arranged on the top surface of the central washer 422.

[0059] The sound-emitting unit further includes a first colloid 5 , and the fixing section 321 is fixedly connected to the diaphragm assembly 2 via the first colloid 5 .

[0060] In some embodiments, the first colloid 5 covers the entire area of the fixing section 321 located inside the diaphragm assembly 2 . In this embodiment, the first colloid 5 covers a portion of the fixing section 321 located inside the diaphragm assembly 2 and is disposed near the via 21 .

[0061] The magnetic circuit component 4 has a second avoidance groove 45 for avoiding the first colloid 5. The second avoidance groove 45 is arranged on the center washer 422. In actual products, the first avoidance groove 44 and the second avoidance groove 45 can be the same slot structure with no obvious boundary between the two. In this embodiment, the first avoidance groove 44 is a blind slot structure, and the second avoidance groove 45 is a through hole structure.

[0062] As a preferred embodiment, the first colloid 5 blocks the via hole 21 .

[0063] In addition, in other embodiments, the sound-emitting unit further includes a second colloid, which is located on the outside of the diaphragm assembly 2. The other end of the fixed section 321 may be fixedly connected to the diaphragm assembly 2 through the second colloid. In this case, the sound-emitting unit may be acceptable with or without the first colloid 5.

[0064] There are multiple leads 32 , which are axially symmetrical or centrally symmetrical. The leads 32 exert symmetrical and balanced pulling forces on the vibration system, thereby preventing the vibration system from being unbalanced due to the pulling forces, thereby causing rolling vibration of the voice coil 3 .

[0065] In an actual product, the sound unit may further include a skeleton 6 . In this case, the skeleton 6 connects the body 31 and the diaphragm assembly 2 . In other words, the body 31 is indirectly connected to the diaphragm assembly 2 through the skeleton 6 .

[0066] In summary, the sound unit provided by this invention boasts a novel structure. While utilizing a large voice coil and large amplitude design, the voice coil lead wire maintains sufficient overhang length and does not occupy space outside the voice coil body, further enhancing the performance of the sound unit. The deformable section of the lead wire does not occupy internal space within the sound unit, allowing for a larger overall volume of the magnetic circuit assembly, thereby improving the sound unit's BL value. The specific construction of the sound unit offers a wide variety of possibilities.

[0067] 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 A diaphragm assembly, wherein the diaphragm assembly is provided with a through hole; A voice coil, the voice coil comprising a body and a lead, the body being connected to the diaphragm assembly, the lead comprising a fixed section, a deformable section, and a conductive section connected in sequence, the fixed section being fixed to the diaphragm assembly, one end of the fixed section being connected to the body, and the other end of the fixed section passing through the through hole and connected to the deformable section; A magnetic circuit component is provided, wherein the magnetic circuit component has a magnetic gap arranged corresponding to the body.

2. The sound unit according to claim 1, characterized in that The through hole is arranged in the central area of the diaphragm assembly.

3. The sound unit according to claim 1, wherein: The magnetic circuit component has a first avoidance groove for avoiding the fixed section.

4. The sound unit according to claim 1, characterized in that The deformation section is spiral or wavy.

5. The sound unit according to claim 1, characterized in that: It also includes a first colloid, and the fixing section is fixedly connected to the diaphragm assembly through the first colloid.

6. The sound unit according to claim 5, characterized in that: The first colloid covers the entire area of the fixing section located on the inner side of the diaphragm assembly.

7. The sound unit according to claim 5, characterized in that: The first colloid covers a portion of the fixing section located on the inner side of the diaphragm assembly and is disposed close to the via hole.

8. The sound generating unit according to claim 6 or 7, characterized in that: The magnetic circuit component has a second avoidance groove for avoiding the first colloid.

9. The sound unit according to claim 5, characterized in that: The first colloid blocks the via hole.

10. The sound unit according to claim 1, characterized in that: It also includes a second colloid, which is located on the outside of the diaphragm assembly, and the other end of the fixed section is fixedly connected to the diaphragm assembly through the second colloid.

Images