sound production unit

Abstract

The utility model discloses a sound unit, including basin frame, metal conducting part and metal mesh cover, be equipped with insulating retaining wall on the basin frame, be equipped with limit slot on the insulating retaining wall, the metal conducting part is embedded in the basin frame, the metal conducting part has the outer soldering pad that exposes in the basin frame, the outer soldering pad is located the outside of insulating retaining wall and is higher than the bottom surface setting of insulating retaining wall, the metal mesh cover has the flanging, and the partial area of flanging stretches into the limit slot. The insulating retaining wall on the basin frame not only can play the role of positioning metal mesh cover, but also can isolate the outer soldering pad on the basin frame and the flanging of metal mesh cover, thereby avoiding the external power supply structural member when welding conduction with the outer soldering pad, soldering tin contacts the flanging of metal mesh cover, leads to the poor welding, is favorable to improve the production yield of sound unit, reduces the risk of complaint.

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 the sound amplifier system.

[0003] As consumers demand higher performance from electroacoustic conversion devices, more and more electronic products are equipped with powder-filled sound modules. In powder-filled sound modules, the sound unit needs to have a metal mesh cover added to allow air to escape and to isolate sound-absorbing particles to prevent them from entering the sound unit.

[0004] Some sound-generating units have embedded metal conductive components. These components have interconnected inner and outer solder pads, with the outer solder pads exposed outside the frame and the inner solder pads used for electrically conducting the voice coil. In existing technology, the metal mesh cover is fixed to the yoke. Due to factors such as the small size of the sound-generating unit itself and assembly errors, the distance between the flange of the metal mesh cover and the outer solder pad is sometimes relatively close. When external power supply components are soldered to the outer solder pad, the solder may sometimes come into contact with the flange of the metal mesh cover, resulting in poor soldering. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a sound-generating unit in which the metal mesh cover is not connected to the outer solder pad.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sound-generating unit, comprising:

[0007] A basin stand, wherein an insulating baffle is provided on the basin stand, and a limiting groove is provided on the insulating baffle;

[0008] A metal conductive component is embedded in the basin frame. The metal conductive component has an outer solder pad exposed on the basin frame. The outer solder pad is located outside the insulating barrier and is higher than the bottom surface of the insulating barrier.

[0009] A metal mesh cover having a flanged edge, a portion of which extends into the limiting groove.

[0010] Furthermore, the flange is provided with ventilation holes.

[0011] Furthermore, the insulating barrier and the basin frame are integrally injection molded structures.

[0012] Furthermore, the flange has an inwardly recessed portion, and the outer pad is provided corresponding to the recessed area of ​​the inwardly recessed portion.

[0013] Furthermore, the insulating barrier is provided along the edge of the outer welding pad.

[0014] Furthermore, the insulating barrier is in the shape of an arc, an L, or a concave shape.

[0015] Furthermore, the outer solder pad is located at the corner, long side, or short side of the basin frame.

[0016] Furthermore, the area of ​​the flange located within the limiting groove is bonded to the insulating retaining wall.

[0017] Furthermore, it also includes a vibration assembly, which includes a voice coil and a diaphragm assembly connecting the voice coil and the frame. The voice coil has leads, and the metal conductive element also has an inner pad that is electrically connected to the outer pad. The inner pad is electrically connected to the leads.

[0018] Furthermore, it also includes an FPC board, which includes an inner fixing part, a cantilever part, and an outer fixing part connected in sequence. The outer fixing part is welded and connected to the inner pad, and the inner fixing part is fixedly connected to the voice coil and welded and connected to the lead wire.

[0019] The beneficial effects of this utility model are as follows: the insulating barrier on the basin frame can not only position the metal mesh cover, but also isolate the outer solder pad on the basin frame from the flange of the metal mesh cover, thereby preventing the solder from contacting the flange of the metal mesh cover when the external power supply structure is soldered to the outer solder pad, which would lead to poor soldering. This is conducive to improving the production yield of the sound unit and reducing the risk of customer complaints. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the sound-generating unit;

[0021] Figure 2 This is a bottom view of the sound-generating unit;

[0022] Figure 3 For along Figure 2 A cross-sectional view along line AA in the middle.

[0023] Label Explanation:

[0024] 1. Basin stand; 11. Insulating retaining wall; 111. Limiting groove;

[0025] 2. Vibration components;

[0026] 3. Magnetic circuit assembly; 31. Yoke; 311. Protrusion; 32. Central magnetic structure; 33. Side magnetic structure;

[0027] 4. External solder pads;

[0028] 5. Metal mesh cover; 51. Body; 511. Clearance hole; 52. Flanged edge; 521. Ventilation hole; 522. Concave part. Detailed Implementation

[0029] 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.

[0030] Please refer to Figures 1 to 3 The sound-generating unit includes a basin frame 1, a metal conductive component, and a metal mesh cover 5. The basin frame 1 is provided with an insulating barrier 11, and the insulating barrier 11 is provided with a limiting groove 111. The metal conductive component is embedded in the basin frame 1 and has an outer solder pad 4 exposed outside the basin frame 1. The outer solder pad 4 is located outside the insulating barrier 11 and is set higher than the bottom surface of the insulating barrier 11. The metal mesh cover 5 has a flange 52, and a portion of the flange 52 extends into the limiting groove 111.

[0031] As can be seen from the above description, the beneficial effects of this utility model are as follows: the insulating barrier 11 on the basin frame 1 can not only serve to position the metal mesh cover 5, but also isolate the outer solder pad 4 on the basin frame 1 from the flange 52 of the metal mesh cover 5, thereby preventing the solder from contacting the flange 52 of the metal mesh cover 5 when the external power supply structure is soldered to the outer solder pad 4, which would lead to poor soldering, thus improving the production yield of the sound unit and reducing the risk of customer complaints.

[0032] Furthermore, the flange 52 is provided with ventilation holes 521.

[0033] As described above, the vent 521 can balance the air pressure inside the sound unit and the outside, so that the sound unit can produce sound normally and stably.

[0034] Furthermore, the insulating barrier 11 and the basin frame 1 are integrally injection molded structures.

[0035] As can be seen from the above description, the insulating barrier 11 is easy to process and form.

[0036] Furthermore, the flange 52 has an inwardly recessed portion 522, and the outer pad 4 is provided corresponding to the recessed area of ​​the inwardly recessed portion 522.

[0037] As can be seen from the above description, the recessed portion 522 can avoid the outer solder pad 4, thereby ensuring that the outer solder pad 4 can be exposed to the sound-generating unit.

[0038] Furthermore, the insulating barrier 11 is provided along the edge of the outer welding pad 4.

[0039] As can be seen from the above description, the insulating barrier 11 is set along the edge of the outer pad 4, which allows the sound-generating unit to have a larger internal space while maintaining a small size.

[0040] Furthermore, the insulating barrier 11 is in the shape of an arc, an L, or a concave shape.

[0041] As can be seen from the above description, the specific shape of the insulating barrier 11 can be set as needed, which helps to enrich the diversity of the sound-generating units.

[0042] Furthermore, the outer solder pad 4 is located at the corner, long side or short side of the basin frame 1.

[0043] As can be seen from the above description, the position of the outer solder pad 4 on the frame 1 can be set as needed, which is conducive to enriching the diversity of the sound generating unit.

[0044] Furthermore, the area of ​​the flange 52 located within the limiting groove 111 is bonded to the insulating barrier 11.

[0045] As can be seen from the above description, the bonding of the flange 52 to the insulating barrier 11 can reduce the risk of the metal mesh cover 5 accidentally falling off, which is conducive to improving the structural stability of the sound unit.

[0046] Furthermore, it also includes a vibration component 2, which includes a voice coil and a diaphragm assembly connecting the voice coil and the frame 1. The voice coil has leads, and the metal conductive element also has an inner pad that is electrically connected to the outer pad 4. The inner pad is electrically connected to the leads.

[0047] As can be seen from the above description, when the lead wire of the voice coil is long enough, the voice coil can be directly soldered to the inner pad through the lead wire.

[0048] Furthermore, it also includes an FPC board, which includes an inner fixing part, a cantilever part, and an outer fixing part connected in sequence. The outer fixing part is welded and connected to the inner pad, and the inner fixing part is fixedly connected to the voice coil and welded and connected to the lead wire.

[0049] As described above, the voice coil can indirectly conduct metal conductive components through the FPC board, and the FPC board can also serve to correct the voice coil's bias.

[0050] Please refer to Figures 1 to 3The first embodiment of this utility model is as follows: a sound-generating unit, including a frame 1, a vibration assembly 2, a magnetic circuit assembly 3, a metal conductive component, and a metal mesh cover 5. The vibration assembly 2 includes a voice coil and a diaphragm assembly connecting the voice coil and the frame 1. The magnetic circuit assembly 3 includes a yoke 31 and a central magnetic structure 32 and a side magnetic structure 33 respectively disposed on the yoke 31. A magnetic gap is formed between the central magnetic structure 32 and the side magnetic structure 33 for the voice coil to move. The central magnetic structure 32 includes a central magnet and a central washer. The central magnet is connected to the yoke. 31 and the center washer; the side magnetic structure 33 includes a side magnet and a side washer, the side magnet connecting the side washer and the yoke 31; the basin frame 1 is provided with an insulating baffle 11, the insulating baffle 11 is provided with a limiting groove 111; the metal conductive component is embedded in the basin frame 1, the metal conductive component has an outer solder pad 4 exposed on the basin frame 1 and an inner solder pad located inside the sound-generating unit, the inner solder pad and the outer solder pad 4 are electrically connected, the outer solder pad 4 is located outside the insulating baffle 11 and is set higher than the bottom surface of the insulating baffle 11 (please refer to...). Figure 3 (View angle); the metal mesh cover 5 includes a body 51 and a flange 52. The flange 52 is connected to the edge of the body 51. A portion of the flange 52 extends into the limiting groove 111. Preferably, the flange 52 is formed by bending a portion of the body 51.

[0051] Optionally, the area of ​​the flange 52 located within the limiting groove 111 is bonded to the insulating barrier 11, which can improve the structural stability of the sound-generating unit.

[0052] In one or more embodiments, the flange 52 is provided with a vent 521, which connects the internal space of the sound-generating unit with the outside.

[0053] For ease of processing and manufacturing, the insulating barrier 11 and the basin frame 1 are integrally injection molded structures.

[0054] To keep the structure of the sound-generating unit compact, in this embodiment, the flange 52 has an inwardly recessed portion 522, and the outer pad 4 is provided corresponding to the recessed area of ​​the inwardly recessed portion 522.

[0055] In some embodiments, the insulating barrier 11 is disposed close to the outer pad 4, preferably the insulating barrier 11 is disposed along the edge of the outer pad 4, and the insulating barrier 11 is arc-shaped, L-shaped, concave-shaped or other shapes.

[0056] In this embodiment, the outer solder pad 4 is located at the corner of the basin frame 1. In other embodiments, the outer solder pad 4 is located on the long side or short side of the basin frame 1.

[0057] The voice coil has leads, and the inner pad is electrically connected to the leads. In some embodiments, the leads of the voice coil can be directly soldered to the inner pad for conductivity. In other embodiments, the sound-generating unit further includes an FPC board, which includes an inner fixing part, a cantilever part, and an outer fixing part connected in sequence. The outer fixing part is soldered to the inner pad for conductivity, and the inner fixing part is fixedly connected to the voice coil and soldered to the leads for conductivity. Specifically, the FPC board has a first pad and a second pad for conductivity. The first pad is located on the inner fixing part and soldered to the leads of the voice coil for conductivity, and the second pad is located on the outer fixing part and soldered to the inner pad for conductivity.

[0058] The bottom surface of the yoke 31 has a protrusion 311. The body 51 is fixedly connected to the yoke 31, including but not limited to adhesive bonding. The body 51 has a clearance hole 511 for avoiding the protrusion 311. The protrusion 311 can improve the magnetic conductivity of the yoke 31, allowing the sound-generating unit to have better performance.

[0059] 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 A basin stand, wherein an insulating baffle is provided on the basin stand, and a limiting groove is provided on the insulating baffle; A metal conductive component is embedded in the basin frame. The metal conductive component has an outer solder pad exposed on the basin frame. The outer solder pad is located outside the insulating barrier and is higher than the bottom surface of the insulating barrier. A metal mesh cover having a flanged edge, a portion of which extends into the limiting groove.

2. The sound-generating unit according to claim 1, characterized in that, The flange is provided with ventilation holes.

3. The sound-generating unit according to claim 1, characterized in that, The insulating barrier and the basin frame are an integral structure formed by injection molding.

4. The sound-generating unit according to claim 1, characterized in that, The flange has an inwardly recessed portion, and the outer pad is provided corresponding to the recessed area of ​​the inwardly recessed portion.

5. The sound-generating unit according to claim 4, characterized in that, The insulating barrier is provided along the edge of the outer welding pad.

6. The sound-generating unit according to claim 4, characterized in that, The insulating barrier is in the shape of an arc, an L, or a concave shape.

7. The sound-generating unit according to claim 4, characterized in that, The outer solder pad is located at the corner, long side, or short side of the basin frame.

8. The sound-generating unit according to claim 1, characterized in that, The area of ​​the flange located within the limiting groove is bonded to the insulating retaining wall.

9. The sound-generating unit according to claim 1, characterized in that, It also includes a vibration assembly, which includes a voice coil and a diaphragm assembly connecting the voice coil and the frame. The voice coil has leads, and the metal conductive element also has an inner pad that is electrically connected to the outer pad. The inner pad is electrically connected to the leads.

10. The sound-generating unit according to claim 9, characterized in that, It also includes an FPC board, which includes an inner fixing part, a cantilever part and an outer fixing part connected in sequence. The outer fixing part is welded to the inner pad for conduction, and the inner fixing part is fixedly connected to the voice coil and welded to the lead wire for conduction.

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