CN213462271U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
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- CN213462271U CN213462271U CN202021939354.XU CN202021939354U CN213462271U CN 213462271 U CN213462271 U CN 213462271U CN 202021939354 U CN202021939354 U CN 202021939354U CN 213462271 U CN213462271 U CN 213462271U
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- voice coil
- micro
- speaker
- loudspeaker
- ball top
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Abstract
The utility model discloses a micro loudspeaker, including ball top and the voice coil loudspeaker voice coil that links to each other, the ball top is close to one side of voice coil loudspeaker voice coil is equipped with the bulge loop, at least some region of voice coil loudspeaker voice coil with the bottom surface of bulge loop links to each other. The micro loudspeaker cancels the arrangement of the framework, and the convex ring on the ball top can replace the framework to play a role in adjusting the position of the voice coil in the magnetic gap, thereby reducing the idle consumption caused by the traditional structure, improving the BL curve flatness degree of the loudspeaker, further improving the vibration symmetry of the vibration system, reducing the harmonic distortion and effectively improving the overall performance of the micro loudspeaker; meanwhile, as the framework is not required to be arranged, the production material consumption is reduced, the production process is simplified, and the manufacturing cost of the micro loudspeaker is favorably reduced; in addition, the voice coil loudspeaker voice coil and ball top lug connection have reduced the setting of glue film, have strengthened micro-speaker's structural stability effectively, do benefit to the yields that improves micro-speaker.
Description
Technical Field
The utility model relates to an electroacoustic transducer technical field especially relates to a miniature speaker.
Background
As a device capable of converting electric energy into acoustic energy, a micro speaker is widely used in microelectronic devices such as smart phones, camcorders, cameras, and notebook computers. A micro-speaker generally includes a magnetic circuit system, a vibration system, and a support system, the vibration system generally including a diaphragm, a dome, a voice coil, and a bobbin. The skeleton is mainly used for adjusting the position of the voice coil in the magnetic gap, so that the idle loss caused by the traditional structure is reduced, the flatness degree of a BL curve of the loudspeaker can be improved, the vibration symmetry of a vibration system can be improved, the harmonic distortion is reduced, and the overall performance of the miniature loudspeaker can be effectively improved.
The existing framework is designed into a metal bracket or a coil formed by winding an enameled wire, the addition of the framework inevitably increases the overall production cost, meanwhile, the production process of the micro-speaker is increased, and the production difficulty is also improved. And the skeleton is located between voice coil loudspeaker voice coil and the vibration system, passes through glue bonding with voice coil loudspeaker voice coil and vibration system and fixes, because the instability of rubber coating process, very easily lead to the skeleton to appear skeleton and voice coil loudspeaker voice coil or vibration system bonding bad in reliability test such as miniature speaker high-power, lead to phenomenons such as fracture or drop to influence miniature speaker life-span.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a low-cost micro-speaker is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a micro loudspeaker comprises a dome and a voice coil which are connected, wherein a convex ring is arranged on one side, close to the voice coil, of the dome, and at least one part of area of the voice coil is connected with the bottom surface of the convex ring.
Furthermore, a weight reduction groove is formed in one side, far away from the voice coil, of the ball top.
Further, the weight-reducing groove is arranged corresponding to the convex ring.
Furthermore, the inner side and/or the outer side of the convex ring are/is provided with a step part, the top of the voice coil is provided with a matching part matched with the step part, and at least one surface of the matching part is bonded with the step part.
Further, the stepped portion includes at least one step.
Further, the stepped portion includes a plurality of steps.
Further, the top dome is a blanking piece formed by blanking.
Furthermore, the material of the ball top is aluminum.
Furthermore, the dome is of a multilayer structure, and the multilayer structure comprises a first rigid layer, a foaming body layer and a second rigid layer which are sequentially stacked and connected.
Further, the first rigid layer and the second rigid layer are aluminum layers, and the foam layer is a PMI layer.
The beneficial effects of the utility model reside in that: the micro loudspeaker cancels the arrangement of the framework, and the convex ring on the ball top can replace the framework to play a role in adjusting the position of the voice coil in the magnetic gap, thereby reducing the idle consumption caused by the traditional structure, improving the BL curve flatness degree of the loudspeaker, further improving the vibration symmetry of the vibration system, reducing the harmonic distortion and effectively improving the overall performance of the micro loudspeaker; meanwhile, as the framework is not required to be arranged, the production material consumption is reduced, the production process is simplified, and the manufacturing cost of the micro loudspeaker is favorably reduced; in addition, the voice coil loudspeaker voice coil and ball top lug connection have reduced the setting of glue film, have strengthened micro-speaker's structural stability effectively, do benefit to the yields that improves micro-speaker.
Drawings
Fig. 1 is an exploded view of the micro-speaker of the present invention;
fig. 2 is a cross-sectional view of a micro-speaker according to a first embodiment of the present invention;
fig. 3 is a cross-sectional view of a micro-speaker with another structure according to a first embodiment of the present invention;
fig. 4 is a cross-sectional view of a micro-speaker according to a second embodiment of the present invention;
fig. 5 is a cross-sectional view of a micro-speaker with another structure according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a micro-speaker having another structure according to an embodiment of the present invention.
Description of reference numerals:
1. a basin stand;
2. a magnetic circuit assembly;
3. vibrating diaphragm;
4. a voice coil;
5. a ball top;
6. a secondary membrane;
7. a convex ring;
8. a weight reduction groove;
9. a step portion;
10. a mating portion.
Detailed Description
In order to explain the technical content, the objects and the 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 6, a micro-speaker includes a dome 5 and a voice coil 4 connected to each other, a protruding ring 7 is disposed on a side of the dome 5 close to the voice coil 4, and at least a partial region of the voice coil 4 is connected to a bottom surface of the protruding ring 7.
From the above description, the beneficial effects of the present invention are: the micro loudspeaker cancels the arrangement of the framework, and the convex ring 7 on the ball top 5 can replace the framework to play a role in adjusting the position of the voice coil 4 in the magnetic gap, thereby reducing the idle consumption caused by the traditional structure, improving the BL curve flatness degree of the loudspeaker, further improving the vibration symmetry of the vibration system, reducing the harmonic distortion and effectively improving the overall performance of the micro loudspeaker; meanwhile, as the framework is not required to be arranged, the production material consumption is reduced, the production process is simplified, and the manufacturing cost of the micro loudspeaker is favorably reduced; in addition, voice coil loudspeaker voice coil 4 and 5 lug connection of dome have reduced the setting of glue film, have strengthened micro-speaker's structural stability effectively, do benefit to the yields that improves micro-speaker.
Furthermore, a weight reduction groove 8 is formed in one side, away from the voice coil 4, of the ball top 5.
From the above description, the weight reduction groove 8 can reduce the overall weight of the dome 5, compensate for the weight increase of the dome 5 caused by the arrangement of the convex ring 7, and prevent the weight increase of the vibration system from affecting the performance of the micro-speaker.
Further, the weight-reducing groove 8 is provided corresponding to the protruding ring 7.
From the above description, the opening position of the weight-reducing slot 8 is reasonably designed, and the influence of the weight-reducing slot 8 on the strength of the ball top 5 is reduced.
Furthermore, a step part 9 is arranged on the inner side and/or the outer side of the convex ring 7, the top of the voice coil 4 is provided with a matching part 10 matched with the step part 9, and at least one surface of the matching part 10 is adhered with the step part 9.
As can be seen from the above description, the step portion 9 and the matching portion 10 that are bonded together can improve the stability of the connection between the voice coil 4 and the dome 5, thereby improving the structural stability of the micro-speaker and facilitating the extension of the service life of the micro-speaker.
Further, the step 9 includes at least one step.
Further, the step portion 9 includes a plurality of steps.
As can be seen from the above description, the step portion 9 having a plurality of steps has a larger bonding area with the voice coil 4, thereby greatly improving the stability of the connection of the voice coil 4 with the dome 5.
Further, the dome 5 is a blanking member formed by blanking.
From the above description, the dome 5 is easy to form and convenient to process.
Further, the material of the dome 5 is aluminum.
Further, the dome 5 is a multilayer structure, and the multilayer structure includes a first rigid layer, a foam layer, and a second rigid layer that are sequentially stacked and connected.
Further, the first rigid layer and the second rigid layer are aluminum layers, and the foam layer is a PMI layer.
As can be seen from the above description, the dome 5 has various materials and specific structures, which is beneficial to enriching the diversity of the micro-speaker.
Example one
Referring to fig. 1 to fig. 3, a first embodiment of the present invention is: referring to fig. 1 and 2, a micro speaker includes a frame 1, a magnetic circuit assembly 2, a diaphragm 3, a voice coil 4, a dome 5 and an auxiliary membrane 6, wherein the magnetic circuit assembly 2 is disposed on the frame 1, the voice coil 4 is disposed in the frame 1, the bottom of the voice coil is disposed in a magnetic gap formed by the magnetic circuit assembly 2, the dome 5 is disposed on the diaphragm 3, the diaphragm 3 is connected to the frame 1, and the dome 5 is connected to the voice coil 4.
A convex ring 7 is arranged on one side of the ball top 5 close to the voice coil 4, and at least one part of area of the voice coil 4 is connected with the bottom surface of the convex ring 7. In this embodiment, a surface of the collar 7 adjacent to the magnetic circuit assembly 2 (i.e., a bottom surface of the collar 7) is bonded to a top surface of the voice coil 4.
Referring to fig. 1 and 3, in order to reduce the overall weight of the dome 5, a weight reduction groove 8 is formed on a side of the dome 5 away from the voice coil 4. Preferably, the weight-reduction grooves 8 are provided in correspondence with the collars 7.
Optionally, the dome 5 is a blanking piece formed by blanking, and in this embodiment, the dome 5 is made of hard aluminum. Of course, in other embodiments, the dome 5 may also be a multilayer structure, and optionally, the multilayer structure includes a first rigid layer, a foam layer, and a second rigid layer that are sequentially stacked and connected, for example, the first rigid layer and the second rigid layer are hard aluminum layers respectively, and the foam layer is a PMI (polymethacrylimide foam) layer.
Example two
Referring to fig. 1, 4 to 6, a second embodiment of the present invention is: referring to fig. 1 and 4, a micro speaker includes a frame 1, a magnetic circuit assembly 2, a diaphragm 3, a voice coil 4, a dome 5 and an auxiliary membrane 6, where the magnetic circuit assembly 2 is disposed on the frame 1, the voice coil 4 is disposed in the frame 1, the bottom of the voice coil is disposed in a magnetic gap formed by the magnetic circuit assembly 2, the dome 5 is disposed on the diaphragm 3, the diaphragm 3 is connected to the frame 1, and the dome 5 is connected to the voice coil 4.
Referring to fig. 4 to 6, a protruding collar 7 is disposed on a side of the dome 5 close to the voice coil 4, at least a partial region of the voice coil 4 is connected to a bottom surface of the protruding collar 7, and optionally, at least a partial region of the voice coil 4 is bonded to a bottom surface of the protruding collar 7.
Optionally, in order to reduce the overall weight of the dome 5, a weight reduction groove 8 (shown in fig. 1) is provided on a side of the dome 5 away from the voice coil 4. Preferably, the weight-reduction grooves 8 are provided in correspondence with the collars 7.
Optionally, the dome 5 is a blanking piece formed by blanking, and in this embodiment, the dome 5 is made of hard aluminum. Of course, in other embodiments, the dome 5 may also be a multilayer structure, and optionally, the multilayer structure includes a first rigid layer, a foam layer, and a second rigid layer that are sequentially stacked and connected, for example, the first rigid layer and the second rigid layer are hard aluminum layers respectively, and the foam layer is a PMI (polymethacrylimide foam) layer.
Referring to fig. 4 to 6, in order to improve the stability of the connection between the dome 5 and the voice coil 4, a step portion 9 is disposed inside and/or outside the protruding ring 7, a matching portion 10 matching with the step portion 9 is disposed on the top of the voice coil 4, and at least one surface of the matching portion 10 is bonded to the step portion 9. Preferably, the step portion 9 and the matching portion 10 are complementary structures.
In detail, the stepped portion 9 includes one step (as shown in fig. 4 and 5) or a plurality of steps (as shown in fig. 6).
As a preferred embodiment, referring to fig. 4 to 6, when the protruding ring 7 has the step portion 9, the matching portion 10 is further bonded to the bottom surface of the dome 5.
In summary, the micro-speaker provided by the utility model cancels the framework, the convex ring on the top of the ball can replace the framework to play the role of adjusting the position of the voice coil in the magnetic gap, which is beneficial to improving the overall performance of the micro-speaker; meanwhile, as the framework is not required to be arranged, the production material consumption is reduced, the production process is simplified, and the manufacturing cost of the micro loudspeaker is favorably reduced; in addition, the voice coil loudspeaker voice coil and ball top lug connection have reduced the setting of glue film, have strengthened micro-speaker's structural stability effectively, do benefit to the yields and the life that improve micro-speaker.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. A micro-speaker, includes ball top and voice coil loudspeaker voice coil that link to each other, its characterized in that: and a convex ring is arranged on one side of the ball top close to the voice coil, and at least one part of the area of the voice coil is connected with the bottom surface of the convex ring.
2. The micro-speaker of claim 1, wherein: and a weight reduction groove is formed in one side, far away from the voice coil, of the ball top.
3. The micro-speaker of claim 2, wherein: the weight reduction groove is arranged corresponding to the convex ring.
4. The micro-speaker of claim 1, wherein: step parts are arranged on the inner side and/or the outer side of the convex ring, the top of the voice coil is provided with a matching part matched with the step parts, and at least one surface of the matching part is bonded with the step parts.
5. The micro-speaker of claim 4, wherein: the stepped portion includes at least one step.
6. The micro-speaker of claim 5, wherein: the stepped portion includes a plurality of steps.
7. The micro-speaker of claim 1, wherein: the top dome is a blanking piece formed by blanking.
8. The micro-speaker of claim 1, wherein: the material of the ball top is aluminum.
9. The micro-speaker of claim 1, wherein: the dome is multilayer structure, multilayer structure is including range upon range of consecutive first rigid layer, foam layer and the second rigid layer.
10. The micro-speaker of claim 9, wherein: the first rigid layer and the second rigid layer are respectively aluminum layers, and the foaming layer is a PMI layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021939354.XU CN213462271U (en) | 2020-09-08 | 2020-09-08 | Miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021939354.XU CN213462271U (en) | 2020-09-08 | 2020-09-08 | Miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213462271U true CN213462271U (en) | 2021-06-15 |
Family
ID=76321787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021939354.XU Active CN213462271U (en) | 2020-09-08 | 2020-09-08 | Miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213462271U (en) |
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2020
- 2020-09-08 CN CN202021939354.XU patent/CN213462271U/en active Active
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