CN216700305U - Double-sided sounding loudspeaker monomer - Google Patents
Double-sided sounding loudspeaker monomer Download PDFInfo
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- CN216700305U CN216700305U CN202122445502.3U CN202122445502U CN216700305U CN 216700305 U CN216700305 U CN 216700305U CN 202122445502 U CN202122445502 U CN 202122445502U CN 216700305 U CN216700305 U CN 216700305U
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Abstract
The utility model discloses a double-sided sounding loudspeaker monomer which comprises a first frame, a second frame and a magnetic circuit assembly, wherein the magnetic circuit assembly is clamped and fixed between the first frame and the second frame, the magnetic circuit assembly comprises center magnetic steel, two side magnetic steels, two first side washers and two integrated washers, the center magnetic steel is positioned between the two side magnetic steels, the integrated washers comprise a center washer, a connecting bridge and a second side washer which are sequentially connected, the center magnetic steel is clamped between the center washers of the two integrated washers, the second side washer connected with the center washer positioned on the top surface of the center magnetic steel is arranged on the bottom surface of one side magnetic steel, the top surface of the side magnetic steel is provided with one first side washer, the second side washer connected with the center washer positioned on the bottom surface of the center magnetic steel is arranged on the top surface of the other side magnetic steel, and the bottom surface of the side magnetic steel is provided with the other first side washer. The insert injection molding process cost is saved, the integrated washer is novel in structure, and the sound loudness is improved on the premise of not increasing the size.
Description
Technical Field
The utility model relates to the technical field of electroacoustic transducers, in particular to a double-sided sounding loudspeaker monomer.
Background
At present, among the two-sided vocal speaker monomer, limit china department and basin frame often are through inserts injection moulding technology shaping formula structure as an organic whole, and this can increase the free manufacturing cost of two-sided vocal speaker undoubtedly, and in addition, the single inside magnetic flux of two-sided vocal speaker is less than showing slightly, leads to the free sound intensity of two-sided vocal speaker big inadequately, consequently, is necessary to improve the free structure of current two-sided vocal speaker.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: provides a double-sided sounding loudspeaker monomer with a novel structure.
In order to solve the technical problems, the utility model adopts the technical scheme that: a double-sided sounding loudspeaker unit comprises a first basin frame, a second basin frame and a magnetic circuit assembly, wherein the magnetic circuit assembly is clamped and fixed between the first basin frame and the second basin frame, the magnetic circuit component comprises a central magnetic steel, two edge magnetic steels, two first edge washers and two integrated washers, the central magnetic steel is positioned between the two side magnetic steels, the integrated washer comprises a central washer, a connecting bridge and a second side washer which are sequentially connected, the center magnetic steel is clamped between the two center washers of the integrated washer, the second edge washer of the center washer, which is connected and located on the top surface of the center magnetic steel, is arranged on the bottom surface of the edge magnetic steel and is provided with one first edge washer, and the second edge washer of the center washer, which is connected and located on the bottom surface of the center magnetic steel, is arranged on the top surface of the edge magnetic steel and is provided with another first edge washer.
Further, the first basin frame is provided with a first pressing part for pressing the first side washer and/or the second side washer.
Furthermore, the first basin frame is provided with a second abutting part for abutting against the edge magnetic steel.
Further, the first basin frame is fixedly connected with the second basin frame.
Further, the edge magnetic steel does not protrude out of the outer side wall of the first basin frame.
Further, in the integrated washer, at least one end of the second side washer is connected with the connecting bridge.
Furthermore, in the integrated washer, two ends of the second side washer are respectively connected with the connecting bridges.
Further, the connecting bridge comprises a first vertical part, a horizontal part and a second vertical part which are sequentially connected, the first vertical part is connected with the central washer, and the second vertical part is connected with the second side washer.
Furthermore, a first avoidance groove is formed in the central magnetic steel, the first vertical portion is located in the first avoidance groove, a second avoidance groove is formed in the side magnetic steel, and the second vertical portion is located in the second avoidance groove.
Furthermore, the horizontal part is arranged corresponding to the middle area of the central magnetic steel.
The utility model has the beneficial effects that: the magnetic circuit assembly of the double-sided sounding loudspeaker single body is clamped and fixed through the first basin frame and the second basin frame, and the side washer does not need to be in an integral structure with the basin frame insert in an injection molding manner, so that the insert injection molding process cost is saved, the assembly steps of the double-sided sounding loudspeaker single body are simplified, the assembly time is saved, and the manufacturing cost of the double-sided sounding loudspeaker single body is reduced; the integrated washer is arranged in the magnetic circuit assembly, so that the structure of the double-sided sounding loudspeaker single body is more novel, the volume of the magnetic steel can be increased, the magnetic flux of the magnetic circuit assembly is increased on the premise of not increasing the volume of the double-sided sounding loudspeaker single body, the BL value is effectively increased, and the sound loudness emitted by the double-sided sounding loudspeaker single body is improved.
Drawings
Fig. 1 is a schematic structural diagram of an internal structure of a double-sided sound-emitting speaker unit according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the structure shown in FIG. 1;
fig. 3 is a schematic structural diagram of a magnetic circuit assembly in a single double-sided sound-emitting speaker according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a metal elastic wave in a single double-sided acoustic speaker according to a first embodiment of the present invention.
Description of the reference symbols:
1. a first frame; 11. a first pressing part; 12. a second pressing part;
2. a second frame;
3. a magnetic circuit assembly; 31. central magnetic steel; 311. a first avoiding groove; 32. edge magnetic steel; 321. a second avoiding groove; 33. a first curb washer; 34. an integrated washer; 341. a central washer; 342. a connecting bridge; 3421. a first vertical portion; 3422. a horizontal portion; 3423. a second vertical portion; 343. a second border washer;
4. metal elastic waves; 41. a body; 411. a first part; 412. a second section; 413. a cantilever portion; 414. an insertion section; 415. welding the part; 42. a bonding pad;
5. a first voice coil;
6. a second voice coil;
7. a recessed portion.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 4, a double-sided sound speaker unit includes a first frame 1, a second frame 2 and a magnetic circuit assembly 3, wherein the magnetic circuit assembly 3 is clamped and fixed between the first frame 1 and the second frame 2, the magnetic circuit assembly 3 includes a center magnetic steel 31, two side magnetic steels 32, two first side washers 33 and two integrated washers 34, the center magnetic steel 31 is located between the two side magnetic steels 32, the integrated washers 34 include a center washer 341, a connecting bridge 342 and a second side washer 343 which are sequentially connected, the center magnetic steel 31 is clamped between the center washers 341 of the two integrated washers 34, the second side washer 343 connected to the center washer 341 located on the top surface of the center magnetic steel 31 is located on the bottom surface of one of the side magnetic steels 32, and the first side washer 33 is located on the top surface of the side magnetic steel 32, the second side washer 343 connected to the center washer 341 located on the bottom surface of the center magnetic steel 31 is disposed on the top surface of another side magnetic steel 32, and the bottom surface of the side magnetic steel 32 is provided with another first side washer 33.
As can be seen from the above description, the magnetic circuit component 3 of the double-sided sounding speaker unit is clamped and fixed by the first and second frame, and the side washer does not need to be injection molded with the frame insert into an integrated structure, so that the insert injection molding process cost is saved, the assembly steps of the double-sided sounding speaker unit are simplified, the assembly time is saved, and the manufacturing cost of the double-sided sounding speaker unit is reduced; have integral type china 34 among the magnetic circuit unit 3, not only make two-sided vocal speaker monomer structure more novel, but also can increase the magnet steel volume, under the prerequisite that does not increase two-sided vocal speaker monomer's volume for magnetic circuit unit 3's magnetic flux increases, has increased the BL value effectively, makes the sound loudness that two-sided vocal speaker monomer sent improve.
Further, the first frame 1 has a first pressing part 11 for pressing the first side washer 33 and/or the second side washer 343.
Further, the first frame 1 has a second pressing portion 12 for pressing the edge magnetic steel 32.
As can be seen from the above description, the specific structure of the double-sided sounding speaker unit is various, which is beneficial to enriching the diversity of the double-sided sounding speaker unit.
Further, the first frame 1 and the second frame 2 are fixedly connected.
Further, the edge magnetic steel 32 does not protrude from the outer side wall of the first frame 1.
From the above description, first basin frame 1 can play the effect of protection limit magnet steel 32 to a certain extent, reduces the impaired probability of magnetic circuit component 3 among the two-sided vocal speaker monomer.
Further, in the integrated washer 34, at least one end of the second side washer 343 is connected with the connecting bridge 342.
Further, in the integrated washer 34, two ends of the second side washer 343 are respectively connected with the connecting bridge 342.
As can be seen from the above description, the integrated washer 34 has a stable structure, and is beneficial to enhancing the drop resistance of the double-sided sounding loudspeaker monomer.
Further, the connecting bridge 342 includes a first vertical portion 3421, a horizontal portion 3422 and a second vertical portion 3423 connected in sequence, the first vertical portion 3421 is connected to the central washer 341, and the second vertical portion 3423 is connected to the second side washer 343.
Further, a first avoiding groove 311 is formed in the central magnetic steel 31, the first vertical portion 3421 is located in the first avoiding groove 311, a second avoiding groove 321 is formed in the side magnetic steel 32, and the second vertical portion 3423 is located in the second avoiding groove 321.
It can be known from the above description that the bridge 342 not only plays the effect of connecting center china 341 and second limit china 343, can also play the effect that blocks center magnet steel 31 and limit magnet steel 32, prevents the phenomenon in the sound production of center magnet steel 31 and limit magnet steel 32, has guaranteed the free structural stability of two-sided vocal speaker effectively for two-sided vocal speaker monomer is durable more.
Further, the horizontal portion 3422 is disposed corresponding to the middle region of the central magnetic steel 31.
As can be seen from the above description, the horizontal portion 3422 is disposed in the middle region corresponding to the central magnetic steel 31, so that the first and second voice coils in the double-sided sound speaker unit have larger vibration spaces, which is beneficial to ensuring the working stability of the double-sided sound speaker unit.
Example one
Referring to fig. 1 to 4, a first embodiment of the present invention is: a double-sided sounding loudspeaker unit can be applied to electronic equipment capable of playing sound, such as mobile phones, tablet computers, notebook computers, intelligent watches, interphones, hearing aids, portable game machines, earphones and the like.
Referring to fig. 1 and 2, the double-sided sound speaker unit includes a frame, a first vibration assembly, a second vibration assembly, a magnetic circuit assembly 3, and a plurality of metal elastic waves 4, the frame includes a first frame 1 and a second frame 2, the first vibration assembly includes a first diaphragm assembly and a first voice coil 5, the first voice coil 5 is located in the first frame 1 and connected to the first frame 1 through the first diaphragm assembly, two ends of the first voice coil 5 are respectively connected to the metal elastic waves 4 and connected to the first frame 1 through the metal elastic waves 4; the second vibration component comprises a second vibrating diaphragm component and a second voice coil 6, the second voice coil 6 is located in the second basin frame 2 and is connected with the second basin frame 2 through the second vibrating diaphragm component, and two ends of the second voice coil 6 are respectively connected with the metal elastic waves 4 and are connected with the second basin frame 2 through the metal elastic waves 4; the first basin frame 1 is fixedly connected with the second basin frame 2, and the magnetic circuit assembly 3 is clamped and fixed between the first basin frame 1 and the second basin frame 2. For convenience of description, the first voice coil 5 and the second voice coil 6 will be hereinafter referred to as voice coils.
Double-sided sound production speaker monomer is at the during operation, and the metal bullet ripples 4 of connecting voice coil loudspeaker voice coil and basin frame can play the effect of rectifying to the voice coil loudspeaker voice coil to improve the voice coil loudspeaker voice coil polarization, roll the phenomenon of shaking, and then reach the purpose that improves double-sided sound production speaker monomer acoustic performance, the existence of metal bullet ripples 4 can increase the heat-sinking capability of voice coil loudspeaker voice coil moreover, is favorable to strengthening double-sided sound production speaker monomer's reliability, makes double-sided sound production speaker monomer work stably for a long time. In addition, the magnetic circuit component 3 is clamped and fixed through the first basin frame and the second basin frame, the side washer does not need to be in an integrated structure with the basin frame insert injection molding, the insert injection molding process cost is saved, the assembly steps of the double-sided sounding loudspeaker units are simplified, and the effect of reducing the manufacturing cost of the double-sided sounding loudspeaker units is achieved.
Referring to fig. 1 and 4, the metal damper 4 includes a body 41 and a bonding pad 42 connected to each other, at least two bonding pads 42 of the metal damper 4 are exposed, the first voice coil 5 is electrically connected to the metal damper 4 connected to the first voice coil, the second voice coil 6 is electrically connected to the metal damper 4 connected to the second voice coil, at least two metal dampers 4 are electrically connected to each other, and the first voice coil 5 and the second voice coil 6 are connected in series through the two metal dampers 4 connected to each other. In this embodiment, the two metal elastic wave 4 pads 42 located at the same end of the double-sided sounding speaker unit and electrically connected to the first voice coil 5 and the second voice coil 6 respectively are connected and conducted, the connection and conduction modes include but are not limited to contact conduction, welding conduction and the like, and the two metal elastic wave 4 pads 42 located at the other end of the double-sided sounding speaker unit and electrically connected to the first voice coil 5 and the second voice coil 6 respectively are exposed to be connected and conducted with an external power supply. Metal bullet ripples 4 itself is formed with pad 42, has made things convenient for the free manufacturing of two-sided vocal speaker, does benefit to the free manufacturing cost of the two-sided vocal speaker of control, and two metal bullet ripples 4 that the electrical property switched on in addition link to each other through pad 42, do benefit to the simplification and walk the line, optimize the free inner space of two-sided vocal speaker, reduce the free equipment degree of difficulty of two-sided vocal speaker and loaded down with trivial details degree.
In order to ensure that the metal elastic wave 4 does not deform beyond the expected deformation, preferably, a complete metal plate is respectively insert-molded at two ends of the first basin frame 1, and after the insert injection molding process is completed, laser cutting is performed on the metal plate, so that the metal elastic wave 4 is obtained.
As shown in fig. 4, specifically, the body 41 includes a first portion 411, a second portion 412 and a cantilever portion 413, the first portion 411 is connected to the second portion 412 through the cantilever portion 413, the pad 42 is connected to the first portion 411, and the pad 42 is disposed perpendicular to the first portion 411. Optionally, the number of the cantilever portions 413 in the body 41 is two, the cantilever portions 413 are S-shaped or U-shaped, and two ends of the second portion 412 are respectively connected to the cantilever portions 413.
As a preferable embodiment, the body 41 further includes an insertion portion 414, and at least one end of the first portion 411 is connected to the insertion portion 414, in this embodiment, both ends of the first portion 411 are respectively provided with the insertion portions 414, the insertion portion 414 connected to the metal elastic wave 4 of the first frame 1 is inserted into the first frame 1 during insert injection molding, and the insertion portion 414 connected to the metal elastic wave 4 of the second frame 2 is inserted into the second frame 2 during insert injection molding. So, can improve the cohesion of metal bullet ripples 4 and basin frame effectively, reduce the risk of metal bullet ripples 4 and the separation of basin frame, improve the free structural stability of two-sided vocal speaker.
In order to increase a sufficient bonding area for the lead of the voice coil, the second portion 412 is provided with a bonding portion 415, and the bonding portion 415 is used for bonding conduction with the lead of the voice coil.
As shown in fig. 1, in order to make the double-sided sound speaker unit thinner, in this embodiment, the second portion 412 of the metal damper 4 connected to the first voice coil 5 is disposed corresponding to a middle region of the first voice coil 5, that is, the second portion 412 of the metal damper 4 connected to the first voice coil 5 is disposed corresponding to a middle region of an outer sidewall of the first voice coil 5 in a height direction. Similarly, the second portion 412 of the metal damper 4 connected to the second voice coil 6 is disposed corresponding to the middle region of the second voice coil 6.
Optionally, the metal elastic wave 4 connected to the first voice coil 5 is connected to the first voice coil 5 through glue, and similarly, the metal elastic wave 4 connected to the second voice coil 6 is connected to the second voice coil 6 through glue.
Referring to fig. 1 to 3, the magnetic circuit assembly 3 includes a central magnetic steel 31, two side magnetic steels 32, two first side washers 33, and two integrated washers 34, the central magnetic steel 31 is positioned between the two side magnetic steels 32, the integrated washer 34 comprises a central washer 341, a connecting bridge 342 and a second side washer 343 which are connected in sequence, the center magnetic steel 31 is clamped between the center washers 341 of the two integrated washers 34, the second side washer 343 connected to the center washer 341 on the top surface of the center magnetic steel 31 is disposed on the bottom surface of one side magnetic steel 32, the first side washer 33 is disposed on the top surface of the side magnetic steel 32, the second side washer 343 connected to the center washer 341 on the bottom surface of the center magnetic steel 31 is disposed on the top surface of the other side magnetic steel 32, and the bottom surface of the side magnetic steel 32 is disposed with the other first side washer 33.
Have integral type china 34 among the magnetic circuit unit 3, not only make two-sided vocal speaker monomer structure more novel, but also can increase the magnet steel volume, under the prerequisite that does not increase two-sided vocal speaker monomer's volume for magnetic circuit unit 3's magnetic flux increases, has increased the BL value effectively, makes the sound loudness that two-sided vocal speaker monomer sent improve.
In the integrated washer 34, at least one end of the second side washer 343 is connected with the connecting bridge 342. In order to improve the structural stability of the integrated washer 34 and reduce the damage probability of the integrated washer 34, in the integrated washer 34, the two ends of the second side washer 343 are respectively connected with the connecting bridge 342.
Referring to fig. 2 and 3, in detail, the connecting bridge 342 includes a first vertical portion 3421, a horizontal portion 3422 and a second vertical portion 3423 connected in sequence, the first vertical portion 3421 is connected to the central washer 341, and the second vertical portion 3423 is connected to the second side washer 343. In order to maximize the volume of the magnetic steel, so as to increase the magnetic flux, the central magnetic steel 31 is provided with a first avoiding groove 311, the first vertical portion 3421 is located in the first avoiding groove 311, the side magnetic steel 32 is provided with a second avoiding groove 321, and the second vertical portion 3423 is located in the second avoiding groove 321. The connecting bridge 342 not only plays a role in connecting the center washer 341 with the second side washer 343, but also can play a role in blocking the center magnetic steel 31 and the side magnetic steel 32, so as to prevent the phenomenon of sound absorption in the sound production of the center magnetic steel 31 and the side magnetic steel 32, effectively ensure the structural stability of the double-sided sound-producing speaker monomer, and ensure that the double-sided sound-producing speaker monomer is more durable.
The horizontal portion 3422 is disposed corresponding to a middle region of the central magnetic steel 31, that is, the horizontal portion 3422 is disposed corresponding to a middle region of the central magnetic steel 31 in the height direction. So, can make first, two voice coils in the two-sided vocal speaker monomer all have great vibration space respectively, do benefit to and guarantee two-sided vocal speaker monomer job stabilization nature.
As shown in fig. 2, in order to further improve the structural stability of the double-sided sound-emitting speaker unit, the first frame 1 has a first pressing portion 11 for pressing the first edge washer 33 and/or the second edge washer 343, and the first frame 1 has a second pressing portion 12 for pressing the edge magnetic steel 32. Similarly, the second frame 2 has a first pressing portion 11 for pressing the first side washer 33 and/or the second side washer 343, and the second frame 2 has a second pressing portion 12 for pressing the side magnetic steel 32.
Optionally, limit magnet steel 32 do not protrude in the lateral wall setting of first basin frame 1, so, first basin frame 1 can play the effect of protection limit magnet steel 32 to a certain extent, reduces the impaired probability of magnetic circuit component 3 among the two-sided vocal speaker monomer. In this embodiment, the outer side wall of the side magnetic steel 32 is recessed in the outer side wall of the first frame 1 and the outer side wall of the second frame 2, that is, a recessed portion 7 is formed on the outer side of the side magnetic steel 32. In other embodiments, the outer side wall of the edge magnetic steel 32 can be arranged flush with the outer side wall of the first frame 1.
In summary, the metal elastic wave for connecting the frame and the voice coil is additionally arranged on the double-sided sounding speaker monomer provided by the utility model, and when the double-sided sounding speaker monomer works, the metal elastic wave can play a role in correcting the voice coil, so that the polarization and rolling vibration phenomena of the voice coil are improved, and the acoustic performance of the double-sided sounding speaker monomer is favorably improved; in addition, the existence of the metal elastic waves can increase the heat dissipation capacity of the voice coil, which is beneficial to enhancing the reliability of the double-sided sounding speaker monomer, so that the double-sided sounding speaker monomer can stably work for a long time; the magnetic circuit assembly is clamped and fixed through the first basin frame and the second basin frame, and the side washer does not need to be in an integrated structure with the basin frame insert in an injection molding mode, so that the insert injection molding process cost is saved, the assembly steps of the double-sided sounding loudspeaker single body are simplified, the assembly time is saved, and the manufacturing cost of the double-sided sounding loudspeaker single body is reduced; the magnetic circuit component is provided with the integrated washer, so that the structure of the double-sided sounding loudspeaker single body is more novel, the volume of the magnetic steel can be increased, the magnetic flux of the magnetic circuit component is increased on the premise of not increasing the volume of the double-sided sounding loudspeaker single body, the BL value is effectively increased, and the loudness of sound emitted by the double-sided sounding loudspeaker single body is improved; the connecting bridge in the integrated washer not only plays a role in connecting the central washer with the second side washer, but also can play a role in blocking central magnetic steel and side magnetic steel, so that the phenomenon of sound absorption of the central magnetic steel and the side magnetic steel is prevented, and the structural stability of the double-sided sounding loudspeaker is effectively guaranteed, so that the double-sided sounding loudspeaker is more durable.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A double-sided sounding loudspeaker monomer is characterized in that: comprises a first basin frame, a second basin frame and a magnetic circuit component, wherein the magnetic circuit component is clamped and fixed between the first basin frame and the second basin frame, the magnetic circuit component comprises a central magnetic steel, two side magnetic steels, two first side washers and two integrated washers, the central magnetic steel is positioned between the two side magnetic steels, the integrated washer comprises a central washer, a connecting bridge and a second side washer which are sequentially connected, the center magnetic steel is clamped between the two center washers of the integrated washer, the second edge washer of the center washer, which is connected and located on the top surface of the center magnetic steel, is arranged on the bottom surface of the edge magnetic steel and is provided with one first edge washer, and the second edge washer of the center washer, which is connected and located on the bottom surface of the center magnetic steel, is arranged on the top surface of the edge magnetic steel and is provided with another first edge washer.
2. A twin-sided acoustic speaker unit as defined in claim 1, wherein: the first frame is provided with a first pressing part for pressing the first edge washer and/or the second edge washer.
3. A twin-sided acoustic speaker unit as defined in claim 1, wherein: the first basin frame is provided with a second abutting part for abutting against the edge magnetic steel.
4. A dual-sided acoustic speaker unit as claimed in claim 1, wherein: the first basin frame is fixedly connected with the second basin frame.
5. A twin-sided acoustic speaker unit as defined in claim 1, wherein: the edge magnetic steel does not protrude out of the outer side wall of the first basin frame.
6. A twin-sided acoustic speaker unit as defined in claim 1, wherein: in the integrated washer, at least one end of the second side washer is connected with the connecting bridge.
7. The dual-sided acoustic speaker unit of claim 6, wherein: in the integrated washer, two ends of the second side washer are respectively connected with the connecting bridge.
8. A dual-sided acoustic speaker unit as claimed in claim 1, wherein: the connecting bridge comprises a first vertical part, a horizontal part and a second vertical part which are sequentially connected, the first vertical part is connected with the central washer, and the second vertical part is connected with the second side washer.
9. A dual-sided acoustic speaker unit as claimed in claim 8, wherein: the central magnetic steel is provided with a first avoiding groove, the first vertical part is positioned in the first avoiding groove, the edge magnetic steel is provided with a second avoiding groove, and the second vertical part is positioned in the second avoiding groove.
10. A dual-sided acoustic speaker unit as claimed in claim 8, wherein: the horizontal part is arranged corresponding to the middle area of the central magnetic steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122445502.3U CN216700305U (en) | 2021-10-11 | 2021-10-11 | Double-sided sounding loudspeaker monomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122445502.3U CN216700305U (en) | 2021-10-11 | 2021-10-11 | Double-sided sounding loudspeaker monomer |
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| Publication Number | Publication Date |
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| CN216700305U true CN216700305U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122445502.3U Active CN216700305U (en) | 2021-10-11 | 2021-10-11 | Double-sided sounding loudspeaker monomer |
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| CN (1) | CN216700305U (en) |
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2021
- 2021-10-11 CN CN202122445502.3U patent/CN216700305U/en active Active
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