Sound production unit and sound production module

Abstract

The utility model discloses a sound unit and sound module, sound unit includes basin frame, front cover and sound film, the sound film has the outer fixed part, the top surface of outer fixed part is bonded with the front cover, the bottom surface of outer fixed part is bonded with the top surface of basin frame, the outer edge of outer fixed part has the upper extension of going up extension and the lower extension of going down extension, the upper extension is bonded with the outer wall of front cover, and the lower extension is bonded with the outer wall of basin frame. Outer fixed part has the lower extension of bonding with the outer wall of basin frame, and also has the upper extension of bonding with the outer wall of front cover, and the bonding sealing area of lower extension and basin frame and the bonding sealing area of upper extension and front cover are increased simultaneously, which greatly improves the waterproof performance of sound unit.

Description

Technical Field

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

[0002] With the increasing requirements for waterproof ratings of electronic products such as mobile phones and watches, improving the waterproof performance of sound units has become a challenge that the industry needs to overcome.

[0003] In the prior art, in order to improve the waterproof performance of the sound unit, the common practice is to set a concave-convex structure on the top surface of the frame to increase the bonding area between the frame and the diaphragm assembly. However, the waterproof effect of this structure is still unsatisfactory. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a sound-generating unit with excellent waterproof performance, and a sound-generating module having the sound-generating unit.

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

[0006] Sink stand;

[0007] Front cover;

[0008] The diaphragm has an outer fixing part, the top surface of which is bonded to the front cover, the bottom surface of which is bonded to the top surface of the basin frame, and the outer edge of which has an upwardly extending upper extension and a downwardly extending lower extension. The upper extension is bonded to the outer peripheral wall of the front cover, and the lower extension is bonded to the outer peripheral wall of the basin frame.

[0009] Furthermore, the upper extension is in the shape of a ring frame.

[0010] Furthermore, each region of the inner surface of the upper extension is bonded to the front cover.

[0011] Furthermore, the lower extension is in the shape of a ring frame.

[0012] Furthermore, each region of the inner surface of the lower extension is bonded to the basin frame.

[0013] Furthermore, the upper extension, lower extension, and outer fixing part are integrally injection molded into a single structure.

[0014] Furthermore, the cross-sectional width of the upper extension is greater than the cross-sectional width of the lower extension.

[0015] Furthermore, the periphery of the top surface of the front cover is flush with the top surface of the upper extension.

[0016] A sound-generating module includes a module housing and the aforementioned sound-generating unit, wherein the sound-generating unit is mounted on the module housing.

[0017] Furthermore, the module housing has a supporting step, which is in the shape of a ring frame; the top surface of the upper extension and the periphery of the top surface of the front cover are simultaneously bonded to the step surface of the supporting step.

[0018] The beneficial effects of this utility model are as follows: the external fixing part has both a lower extension that is bonded to the outer peripheral wall of the basin frame and an upper extension that is bonded to the outer peripheral wall of the front cover. The sealing area of ​​the lower extension that is bonded to the basin frame and the sealing area of ​​the upper extension that is bonded to the front cover are both increased, which greatly improves the waterproof performance of the sound unit. Attached Figure Description

[0019] Figure 1 This is a schematic diagram 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 sound-generating module;

[0022] Figure 4 for Figure 3 A magnified view of detail A.

[0023] Label Explanation:

[0024] 1. Module housing; 11. Support step; 12. Sound outlet; 13. Buffer sealing gasket;

[0025] 2. Sound generating unit; 21. Front cover; 211. Perimeter; 22. Frame; 23. Magnetic circuit assembly; 231. Yoke; 232. Central magnetic structure; 233. Side magnetic structure; 2331. Ring washer; 2332. Side magnet; 24. Vibration assembly; 241. Voice coil; 242. Diaphragm; 2421. Inner fixing part; 2422. Wrapped part; 2423. Outer fixing part; 2424. Upper extension part; 2425. Lower extension part. Detailed Implementation

[0026] 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.

[0027] Please refer to Figures 1 to 4 Sound generating unit 2 includes:

[0028] 22;

[0029] Front cover 21;

[0030] The diaphragm 242 has an outer fixing part 2423. The top surface of the outer fixing part 2423 is bonded to the front cover 21, and the bottom surface of the outer fixing part 2423 is bonded to the top surface of the basin frame 22. The outer edge of the outer fixing part 2423 has an upwardly extending upper extension part 2424 and a downwardly extending lower extension part 2425. The upper extension part 2424 is bonded to the outer peripheral wall of the front cover 21, and the lower extension part 2425 is bonded to the outer peripheral wall of the basin frame 22.

[0031] As can be seen from the above description, the beneficial effects of this utility model are as follows: the external fixing part 2423 has both a lower extension part 2425 that is bonded to the outer peripheral wall of the basin frame 22 and an upper extension part 2424 that is bonded to the outer peripheral wall of the front cover 21. The bonding and sealing area between the lower extension part 2425 and the basin frame 22 and the bonding and sealing area between the upper extension part 2424 and the front cover 21 are increased at the same time, which greatly improves the waterproof performance of the sound-generating unit 2.

[0032] Furthermore, the upper extension 2424 is in the shape of a ring frame.

[0033] As can be seen from the above description, the annular upper extension 2424 and the front cover 21 can form an annular adhesive surface.

[0034] Furthermore, each region of the inner surface of the upper extension 2424 is bonded to the front cover 21.

[0035] As can be seen from the above description, the large bonding area between the upper extension 2424 and the front cover 21 is beneficial to improving the structural stability of the sound unit 2 to a greater extent.

[0036] Furthermore, the lower extension 2425 is in the shape of a ring frame.

[0037] As can be seen from the above description, the ring-shaped lower extension 2425 and the basin frame 22 can form a ring-shaped adhesive surface.

[0038] Furthermore, each region of the inner surface of the lower extension 2425 is bonded to the basin frame 22.

[0039] As can be seen from the above description, the lower extension 2425 has a large bonding area with the frame 22, which helps to improve the structural stability and waterproof performance of the sound unit 2 to a greater extent.

[0040] Furthermore, the upper extension 2424, the lower extension 2425, and the outer fixing part 2423 are integrally injection molded structures.

[0041] As can be seen from the above description, the upper extension 2424 and the lower extension 2425 are easy to process and form, which is conducive to controlling the manufacturing cost of the sound unit 2.

[0042] Furthermore, the cross-sectional width of the upper extension 2424 is greater than the cross-sectional width of the lower extension 2425.

[0043] As can be seen from the above description, the top surface of the upper extension 2424 can serve as the contact surface between the sound-generating unit 2 and the external structural component, thereby allowing the upper extension 2424 to perform multiple functions; the external structural component can be the module shell 1 of the sound-generating module.

[0044] Furthermore, the periphery 211 of the top surface of the front cover 21 is flush with the top surface of the upper extension 2424.

[0045] As can be seen from the above description, the periphery 211 of the top surface of the front cover 21, together with the top surface of the extension 2424, can form a larger contact surface, thereby allowing the sound unit 2 to better contact the external structural components.

[0046] The sound-generating module includes a module housing 1 and the aforementioned sound-generating unit 2, wherein the sound-generating unit 2 is mounted on the module housing 1.

[0047] As can be seen from the above description, this sound-generating module has good waterproof performance.

[0048] Furthermore, the module housing 1 has a supporting step 11, which is in the shape of a ring frame; the top surface of the upper extension 2424 and the periphery 211 of the top surface of the front cover 21 are simultaneously bonded to the step surface of the supporting step 11.

[0049] As described above, the top surface of the upper extension 2424 and the periphery 211 of the top surface of the front cover 21 are simultaneously bonded and fixed to the support step 11. This helps to increase the sealing area between the sound-generating unit 2 and the module housing 1, improves the phenomenon of external moisture entering the sound-generating module through the gap between the module housing 1 and the sound-generating unit 2, and improves the overall waterproof performance of the sound-generating module. Moreover, the width of the periphery 211 of the top surface of the front cover 21 does not need to be set too wide, so as not to encroach on the internal space of the sound-generating unit 2, which helps to ensure the acoustic performance of the sound-generating unit 2.

[0050] Please refer to Figures 1 to 4The first embodiment of this utility model is as follows: The sound-generating unit 2 includes a front cover 21, a frame 22, and a magnetic circuit assembly 23 and a vibration assembly 24 respectively connected to the frame 22. The magnetic circuit assembly 23 includes a yoke 231 and a central magnetic structure 232 and a side magnetic structure 233 respectively disposed on the yoke 231. A magnetic gap is formed between the central magnetic structure 232 and the side magnetic structure 233. The central magnetic structure 232 includes a central washer and a central magnet connecting the central washer and the yoke 231. The side magnetic structure 233 includes a ring washer 2331 and a ring washer 2331 connecting the ring washer 2331 and the yoke 231. The lateral magnet 2332, the annular washer 2331 is connected to the frame 22; the vibration assembly 24 includes a diaphragm assembly and a voice coil 241, the diaphragm assembly connects the voice coil 241 to the frame 22, the voice coil 241 is movable in the magnetic gap; the diaphragm assembly includes a diaphragm 242 and a dome, the diaphragm 242 includes an inner fixing part 2421, a folded ring part 2422 and an outer fixing part 2423 connected sequentially from the inside to the outside, the dome is connected to the inner fixing part 2421, the top surface of the outer fixing part 2423 is bonded to the bottom surface of the front cover 21, and the top surface of the frame 22 is bonded to the bottom surface of the outer fixing part 2423.

[0051] In some embodiments, the basin frame 22 may be made of plastic, while in other embodiments, it may be made of metal. In this embodiment, the annular washer 2331 and the basin frame 22 are integrally formed, reducing the number of assembly parts for the sound-generating unit 2 and facilitating its assembly and production. The basin frame 22 is made of metal, resulting in a lightweight yet high structural strength. Furthermore, the integral structure of the annular washer 2331 and the basin frame 22 facilitates the assembly and production of the sound-generating unit 2.

[0052] In one or more embodiments, the diaphragm assembly further includes a frame connecting the inner fixing portion 2421 and / or the dome, the frame being connected to the voice coil 241.

[0053] The outer edge of the external fixing part 2423 has an upwardly extending upper extension 2424 and a downwardly extending lower extension 2425. The upper extension 2424 and the lower extension 2425 are respectively in the shape of a ring frame. The upper extension 2424 is bonded to the outer peripheral wall of the front cover 21, and the lower extension 2425 is bonded to the outer peripheral wall of the basin frame 22.

[0054] Preferably, each region of the inner surface of the upper extension 2424 is bonded to the front cover 21, and each region of the inner surface of the lower extension 2425 is bonded to the basin frame 22.

[0055] The diaphragm 242 is made of PEEK (polyetheretherketone), TPEE (thermoplastic polyester elastomer), rubber, or other elastic materials, including but not limited to silicone. In one or more embodiments, the upper extension 2424, the lower extension 2425, and the outer fixing part 2423 are integrally injection molded structures.

[0056] This embodiment also provides a sound-generating module, which includes a module housing 1 and the aforementioned sound-generating unit 2, wherein the sound-generating unit 2 is mounted on the module housing 1.

[0057] The module housing 1 has a support step 11, which is in the shape of a ring frame. The module housing 1 is also provided with a sound outlet 12 that connects to the hollow area of ​​the support step 11. The top surface of the upper extension 2424 and the periphery 211 of the top surface of the front cover 21 are simultaneously bonded to the step surface of the support step 11.

[0058] In some embodiments, the cross-sectional width of the upper extension 2424 is greater than the cross-sectional width of the lower extension 2425. In some embodiments, the periphery 211 of the top surface of the front cover 21 is flush with the top surface of the upper extension 2424, which facilitates adhesive application and allows a uniform adhesive layer to be formed between the sound-generating unit 2 and the supporting step 11. Of course, in other embodiments, it is acceptable for the top surface of the upper extension 2424 to slightly protrude from the periphery 211 of the top surface of the front cover 21, or for the periphery 211 of the top surface of the front cover 21 to slightly protrude from the top surface of the upper extension 2424.

[0059] The adhesive area width of the step surface of the supporting step 11 is greater than or equal to 5mm, and less than or equal to 15mm. In this embodiment, the adhesive area width of the step surface of the supporting step 11 is equal to 10mm. The adhesive area width of the step surface of the supporting step 11 can be specifically set according to different levels of waterproofing requirements.

[0060] In a preferred embodiment, the outer wall of the upper extension 2424 is bonded to the vertical wall of the supporting step 11. Bonding the outer wall of the upper extension 2424 to the vertical wall of the supporting step 11 further reduces the risk of external moisture intruding into the sound-generating module / sound-generating unit 2.

[0061] Optionally, a buffer sealing gasket 13 is fixed to the step surface of the supporting step 11, and the top surface of the upper extension 2424 and the periphery 211 of the top surface of the front cover 21 are simultaneously bonded and fixed to the buffer sealing gasket 13. The buffer sealing gasket 13 can further improve the waterproof performance of the sound-generating module.

[0062] 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 Sink stand; Front cover; The diaphragm has an outer fixing part, the top surface of which is bonded to the front cover, the bottom surface of which is bonded to the top surface of the basin frame, and the outer edge of which has an upwardly extending upper extension and a downwardly extending lower extension. The upper extension is bonded to the outer peripheral wall of the front cover, and the lower extension is bonded to the outer peripheral wall of the basin frame.

2. The sound-generating unit according to claim 1, characterized in that, The upper extension is in the shape of a ring frame.

3. The sound-generating unit according to claim 2, characterized in that, Each region of the inner surface of the upper extension is bonded to the front cover.

4. The sound-generating unit according to claim 1, characterized in that, The lower extension is in the shape of a ring frame.

5. The sound-generating unit according to claim 4, characterized in that, Each region of the inner surface of the lower extension is bonded to the basin frame.

6. The sound-generating unit according to claim 1, characterized in that, The upper extension, lower extension, and outer fixing part are integrally injection molded into a single structure.

7. The sound-generating unit according to claim 1, characterized in that, The cross-sectional width of the upper extension is greater than the cross-sectional width of the lower extension.

8. The sound-generating unit according to claim 1, characterized in that, The periphery of the top surface of the front cover is flush with the top surface of the upper extension.

9. A sound-generating module, characterized in that, It includes a module housing and a sound-generating unit as described in any one of claims 1-8, wherein the sound-generating unit is mounted on the module housing.

10. The sound-generating module according to claim 9, characterized in that, The module housing has a supporting step, which is in the shape of a ring frame; the top surface of the upper extension and the periphery of the top surface of the front cover are simultaneously bonded to the step surface of the supporting step.

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