CN214413037U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
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- CN214413037U CN214413037U CN202120116317.7U CN202120116317U CN214413037U CN 214413037 U CN214413037 U CN 214413037U CN 202120116317 U CN202120116317 U CN 202120116317U CN 214413037 U CN214413037 U CN 214413037U
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- heat dissipation
- hole
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- speaker
- magnetic steel
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Abstract
The utility model discloses a micro loudspeaker, include the basin frame and locate magnetic circuit assembly on the basin frame, magnetic circuit assembly includes the yoke and locates magnet steel assembly on the yoke, be equipped with first heat dissipation through-hole on the yoke, magnet steel assembly have corresponding to the second heat dissipation through-hole that first heat dissipation through-hole set up, first heat dissipation through-hole and second heat dissipation through-hole intercommunication form heat dissipation channel. The arrangement of the heat dissipation channel can increase the overall heat dissipation area of the micro speaker on the basis of not changing the overall structure and the appearance of the micro speaker, thereby being beneficial to conducting heat inside the micro speaker to the outside and improving the overall heat dissipation effect of the micro speaker, thereby improving the phenomena of overheating or overhigh temperature and the like of the micro speaker; simultaneously, the last heat dissipation channel of magnetic circuit assembly can increase the back chamber volume of speaker module to promote speaker module wholeness ability.
Description
Technical Field
The utility model relates to an electroacoustic transducer technical field especially relates to a miniature speaker.
Background
Generally, the micro-speaker has low energy conversion efficiency, most of the energy is converted into heat, and the heat is accumulated to cause the micro-speaker to generate heat, so that the internal temperature of the micro-speaker rises, and irreversible damage is caused to the micro-speaker. For example: the overheating or the over-high temperature of the micro-speaker can cause the phenomena of demagnetization of the magnetic steel, collapse of the vibrating diaphragm, failure of glue and the like, thereby affecting the performance and the service life of the micro-speaker.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provided is a micro-speaker having excellent heat dissipation performance.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a micro loudspeaker, includes the basin frame and locates magnetic circuit assembly on the basin frame, magnetic circuit assembly includes the yoke and locates magnetic steel assembly on the yoke, be equipped with first heat dissipation through-hole on the yoke, magnetic steel assembly has corresponding to the second heat dissipation through-hole that first heat dissipation through-hole set up, first heat dissipation through-hole and second heat dissipation through-hole intercommunication form heat dissipation channel.
Furthermore, the cross-sectional area of the first heat dissipation through hole is larger than that of the second heat dissipation through hole, a step part is formed at the communication position of the first heat dissipation through hole and the second heat dissipation through hole, and the magnetic steel assembly forms a step surface of the step part from the exposed area of the first heat dissipation through hole.
Furthermore, a heat dissipation layer is arranged on the step surface.
Further, the inner wall surface of the first heat dissipation through hole is aligned with the inner wall surface of the second heat dissipation through hole.
Further, the inner wall surface of the heat dissipation channel is provided with a heat dissipation coating.
Further, the heat dissipation coating is a graphene coating.
Furthermore, the magnetic circuit component further comprises a washer component arranged corresponding to the magnetic steel component, and the washer component is provided with a heat dissipation hole communicated with the second heat dissipation through hole.
Furthermore, the magnetic steel component comprises central magnetic steel, and the central magnetic steel is provided with a plurality of second heat dissipation through holes.
Furthermore, at least one second heat dissipation through hole is arranged corresponding to the center of the central magnetic steel.
Furthermore, the magnetic steel component comprises edge magnetic steel, and a plurality of second heat dissipation through holes are formed in the edge magnetic steel.
The beneficial effects of the utility model reside in that: the arrangement of the heat dissipation channel can increase the overall heat dissipation area of the micro speaker on the basis of not changing the overall structure and the appearance of the micro speaker, thereby being beneficial to conducting heat inside the micro speaker to the outside and improving the overall heat dissipation effect of the micro speaker, thereby improving the phenomena of overheating or overhigh temperature and the like of the micro speaker; simultaneously, the last heat dissipation channel of magnetic circuit assembly can increase the back chamber volume of speaker module to promote speaker module wholeness ability.
Drawings
Fig. 1 is an exploded view of a micro-speaker according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a micro speaker according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram 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 with another structure according to a first embodiment of the present invention;
fig. 5 is an exploded view of a micro-speaker according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a micro-speaker according to a second embodiment of the present invention.
Description of reference numerals:
1. a basin stand;
2. a diaphragm assembly;
3. a voice coil;
4. a yoke;
5. a magnetic steel component; 51. central magnetic steel; 52. edge magnetic steel;
6. a washer assembly;
7. a first heat dissipating through hole;
8. a second heat dissipating through hole;
9. a step surface;
10. and (4) heat dissipation holes.
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 frame 1 and a magnetic circuit assembly disposed on the frame 1, the magnetic circuit assembly includes a yoke 4 and a magnetic steel assembly 5 disposed on the yoke 4, the yoke 4 is provided with a first heat dissipation through hole 7, the magnetic steel assembly 5 has a second heat dissipation through hole 8 disposed corresponding to the first heat dissipation through hole 7, and the first heat dissipation through hole 7 and the second heat dissipation through hole 8 are communicated to form a heat dissipation channel.
From the above description, the beneficial effects of the present invention are: the arrangement of the heat dissipation channel can increase the overall heat dissipation area of the micro speaker on the basis of not changing the overall structure and the appearance of the micro speaker, thereby being beneficial to conducting heat inside the micro speaker to the outside and improving the overall heat dissipation effect of the micro speaker, thereby improving the phenomena of overheating or overhigh temperature and the like of the micro speaker; simultaneously, the last heat dissipation channel of magnetic circuit assembly can increase the back chamber volume of speaker module to promote speaker module wholeness ability.
Further, the cross-sectional area of the first heat dissipation through hole 7 is larger than that of the second heat dissipation through hole 8, a step portion is formed at the communication position of the first heat dissipation through hole 7 and the second heat dissipation through hole 8, and a step surface 9 of the step portion is formed in the exposed area of the magnetic steel assembly 5 from the first heat dissipation through hole 7.
Further, a heat dissipation layer is arranged on the step surface 9.
As can be seen from the above description, the heat dissipation layer disposed on the step surface 9 can further enhance the heat dissipation effect of the micro-speaker.
Further, the inner wall surface of the first heat dissipation through hole 7 is aligned with the inner wall surface of the second heat dissipation through hole 8.
As can be seen from the above description, the specific configuration of the heat dissipation channel is various, which is beneficial to enrich the diversity of the micro-speaker.
Further, the inner wall surface of the heat dissipation channel is provided with a heat dissipation coating.
As can be seen from the above description, the provision of the heat dissipation coating on the inner wall surface of the heat dissipation channel can further enhance the heat dissipation performance of the micro-speaker.
Further, the heat dissipation coating is a graphene coating.
From the above description, the graphene coating has excellent thermal conductivity, and is particularly suitable for manufacturing a heat dissipation coating.
Further, the magnetic circuit component further comprises a washer component 6 arranged corresponding to the magnetic steel component 5, and the washer component 6 is provided with a heat dissipation hole 10 communicated with the second heat dissipation through hole 8.
As can be seen from the above description, the arrangement of the heat dissipation hole 10 further increases the heat dissipation area of the micro-speaker, thereby improving the heat dissipation performance of the micro-speaker.
Further, the magnetic steel component 5 comprises central magnetic steel 51, and the central magnetic steel 51 is provided with a plurality of second heat dissipation through holes 8.
Further, at least one second heat dissipation through hole 8 is arranged corresponding to the center of the central magnetic steel 51.
Further, the magnetic steel component 5 comprises edge magnetic steel 52, and a plurality of second heat dissipation through holes 8 are formed in the edge magnetic steel 52.
From the above description, the specific number and the arrangement position of the heat dissipation channels can be selected as required, which is beneficial to enriching the diversity of the micro-speaker.
Example one
Referring to fig. 1 to 4, a first embodiment of the present invention is: a micro speaker can be used for a plurality of electronic devices such as mobile phones, tablet computers, intelligent watches and the like.
Referring to fig. 1 and 4, the micro-speaker includes a frame 1, and a magnetic circuit component and a diaphragm component 2 respectively disposed on the frame 1, the diaphragm component 2 is provided with a voice coil 3, the magnetic circuit component includes a yoke 4, a magnetic steel component 5 disposed on the yoke 4, and a boss component 6 disposed corresponding to the magnetic steel component 5, the yoke 4 is provided with a first heat dissipation through hole 7, the magnetic steel component 5 has a second heat dissipation through hole 8 disposed corresponding to the first heat dissipation through hole 7, and the first heat dissipation through hole 7 and the second heat dissipation through hole 8 are communicated to form a heat dissipation channel.
As shown in fig. 2, optionally, the cross-sectional area of the first heat dissipation through hole 7 is larger than the cross-sectional area of the second heat dissipation through hole 8, a step portion is formed at a communication position of the first heat dissipation through hole 7 and the second heat dissipation through hole 8, and a step surface 9 of the step portion is formed in an exposed region of the magnetic steel assembly 5 from the first heat dissipation through hole 7. In order to further improve the heat dissipation performance of the micro-speaker, a heat dissipation layer (not shown) is disposed on the step surface 9, and the heat dissipation layer may be a metal sheet, such as a copper sheet; or a coating, such as a graphene coating, etc., since the step surface 9 is exposed, the heat generated by the micro-speaker is more easily conducted from the step surface 9 to the outside. In this embodiment, the step surface 9 is annular, and in other embodiments, the step surface 9 may have other shapes.
In order to further improve the heat dissipation effect of the micro-speaker, the inner wall surface of the heat dissipation channel is provided with a heat dissipation coating, and the heat dissipation coating includes but is not limited to a graphene coating. Preferably, when the heat dissipation layer is provided, the heat dissipation coating is connected with the heat dissipation layer, so that the heat dissipation performance of the micro-speaker is improved to a greater extent.
As shown in fig. 3 and 4, it is of course also possible that the inner wall surface of the first heat dissipation through-hole 7 is aligned with the inner wall surface of the second heat dissipation through-hole 8. At this time, the cross-sectional profile of the first heat dissipation through-hole 7 is the same in shape and size as the interface profile of the second heat dissipation through-hole 8.
As shown in fig. 4, in order to further increase the heat dissipation area of the micro-speaker, the washer assembly 6 has a heat dissipation hole 10 communicating with the second heat dissipation through hole 8, and the heat dissipation hole 10 may be a blind hole or a through hole.
The magnetic steel component 5 comprises central magnetic steel 51, a plurality of second heat dissipation through holes 8 are arranged on the central magnetic steel 51, and preferably at least one second heat dissipation through hole 8 is arranged corresponding to the center of the central magnetic steel 51. It is easy to understand that when the number of the second heat dissipating through holes 8 on the central magnetic steel 51 is plural, the first heat dissipating through holes 7 with the same number as that of the second heat dissipating through holes 8 should be arranged in the area of the yoke 4 corresponding to the central magnetic steel 51.
Example two
Referring to fig. 5 and fig. 6, a second embodiment of the present invention is a further improvement made on the basis of the first embodiment, and the difference from the first embodiment is that: magnetic steel component 5 includes limit magnet steel 52, be equipped with a plurality of on the limit magnet steel 52 second heat dissipation through-hole 8, it is corresponding, yoke 4 corresponds the region of limit magnet steel 52 is equipped with the first heat dissipation through-hole 7 that aligns with second heat dissipation through-hole 8 on the limit magnet steel 52.
To sum up, the utility model provides a micro loudspeaker, heat dispersion is good, acoustic performance is good, long service life, variety are abundant.
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. The utility model provides a micro loudspeaker, includes the basin frame and locates magnetic circuit subassembly on the basin frame, magnetic circuit subassembly includes the yoke and locates magnet steel assembly on the yoke, its characterized in that: the magnetic steel component is provided with a second heat dissipation through hole corresponding to the first heat dissipation through hole, and the first heat dissipation through hole and the second heat dissipation through hole are communicated to form a heat dissipation channel.
2. The micro-speaker of claim 1, wherein: the cross-sectional area of the first heat dissipation through hole is larger than that of the second heat dissipation through hole, a step part is formed at the communication position of the first heat dissipation through hole and the second heat dissipation through hole, and the magnetic steel assembly forms the step surface of the step part from the exposed area of the first heat dissipation through hole.
3. The micro-speaker of claim 2, wherein: and a heat dissipation layer is arranged on the step surface.
4. The micro-speaker of claim 1, wherein: the inner wall surface of the first heat dissipation through hole is aligned with the inner wall surface of the second heat dissipation through hole.
5. The micro-speaker of claim 1, wherein: and the inner wall surface of the heat dissipation channel is provided with a heat dissipation coating.
6. The micro-speaker of claim 5, wherein: the heat dissipation coating is a graphene coating.
7. The micro-speaker of claim 1, wherein: the magnetic circuit component further comprises a washer component arranged corresponding to the magnetic steel component, and the washer component is provided with a heat dissipation hole communicated with the second heat dissipation through hole.
8. The micro-speaker of claim 1, wherein: the magnetic steel assembly comprises central magnetic steel, and the central magnetic steel is provided with a plurality of second heat dissipation through holes.
9. The micro-speaker of claim 8, wherein: at least one second heat dissipation through hole is arranged corresponding to the center of the central magnetic steel.
10. The micro-speaker of claim 1, wherein: the magnetic steel assembly comprises edge magnetic steel, and a plurality of second heat dissipation through holes are formed in the edge magnetic steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120116317.7U CN214413037U (en) | 2021-01-15 | 2021-01-15 | Miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120116317.7U CN214413037U (en) | 2021-01-15 | 2021-01-15 | Miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214413037U true CN214413037U (en) | 2021-10-15 |
Family
ID=78046751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120116317.7U Active CN214413037U (en) | 2021-01-15 | 2021-01-15 | Miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214413037U (en) |
-
2021
- 2021-01-15 CN CN202120116317.7U patent/CN214413037U/en active Active
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