CN211378241U - Dome dome and loudspeaker - Google Patents
Dome dome and loudspeaker Download PDFInfo
- Publication number
- CN211378241U CN211378241U CN202020319597.7U CN202020319597U CN211378241U CN 211378241 U CN211378241 U CN 211378241U CN 202020319597 U CN202020319597 U CN 202020319597U CN 211378241 U CN211378241 U CN 211378241U
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- dome
- layer
- thermal radiation
- enhancement layer
- diaphragm
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- 230000005855 radiation Effects 0.000 claims abstract description 63
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 16
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 4
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 3
- 239000011112 polyethylene naphthalate Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polyethylene naphthalate Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
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- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model discloses a dome and speaker, wherein, the dome includes: the dome body is provided with a first side surface and a second side surface which are opposite, the first side surface comprises a middle area and a peripheral area which is annularly arranged in the middle area, and the peripheral area is used for being combined with a vibrating diaphragm of the loudspeaker; and a thermal radiation enhancement layer disposed on the second side surface and/or the middle region. The technical scheme of the utility model can improve the heat dispersion of speaker.
Description
Technical Field
The utility model relates to a sound generating mechanism technical field, in particular to dome and speaker.
Background
With the rapid development of smart phones, the application scenarios of the smart phones are wider and wider, and the requirements of users on various aspects of the smart phones are higher and higher. Playing games, watching large pieces, enjoying music, all require high quality sound effects. This puts higher demands on the loudspeaker, and the loudness is high and the sound quality is good. High loudness is often accompanied by high power, and the loudspeaker itself has very low acoustic efficiency, so that most of the input power becomes heat. However, the temperature resistance of the parts of the speaker is limited, and it is necessary to improve the heat dissipation performance of the speaker in order to prevent the speaker from being burned out at high temperature.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dome aims at improving the heat dispersion of the speaker that has this dome.
To achieve the above object, the present invention provides a dome for a speaker, and includes:
the dome body is provided with a first side surface and a second side surface which are opposite, the first side surface comprises a middle area and a peripheral area which is annularly arranged in the middle area, and the peripheral area is used for being combined with a vibrating diaphragm of the loudspeaker; and
a thermal radiation enhancement layer disposed on the second side surface and/or the middle region.
Optionally, the thermal radiation enhancement layer has a thickness of less than or equal to 20 microns.
Optionally, the thermal radiation enhancement layer has a thickness greater than or equal to 3 microns.
Optionally, the thermal radiation enhancement layer is made of one or more of nanocarbon, graphene, carbon tubes, boron nitride, silicon carbide, and aluminum nitride.
Optionally, the thermal radiation enhancement layer is a particle layer.
Optionally, the dome body comprises a foaming material layer and a heat conducting material layer coating the foaming material layer; or the dome body is a plastic layer.
Optionally, the heat conducting material layer is a metal material layer.
Optionally, the plastic layer is a PEN layer or a PET layer.
The utility model also provides a loudspeaker, including vibrating diaphragm, and aforementioned dome, the peripheral region of the first side of dome with the vibrating diaphragm combines.
Optionally, the peripheral region and the diaphragm are bonded by a heat-conducting adhesive.
The technical proposal of the utility model is that the heat radiation enhancement layer is additionally arranged on the second side surface and/or the middle area to improve the heat radiation capability of the dome, thereby improving the heat radiation capability of the dome; so, the produced heat of voice coil loudspeaker voice coil can radiate through the heat radiation enhancement layer that has the dome of great area after transmitting the dome via the vibrating diaphragm to improve the radiating effect of speaker.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a speaker according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic diagram of an embodiment of a dome of the speaker of FIG. 1;
FIG. 4 is a schematic diagram of another embodiment of a dome for the speaker of FIG. 1;
fig. 5 is a temperature rise contrast curve diagram of the utility model of the dome and the common dome.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Ball top | 11 | Ball |
| 111 | |
112 | Layer of |
| 12 | Thermal |
20 | Vibrating |
| 30 | Voice coil |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a ball top.
Referring to fig. 1 and 2, in an embodiment of the present invention, the dome 10 is used for a speaker, the speaker further includes a diaphragm 20 and a voice coil 30, the dome 10 is combined with one side of the diaphragm 20, and the voice coil 30 is combined with the other side of the diaphragm 20.
Referring also to fig. 3, in the present embodiment, the dome 10 includes:
the dome body 11 has a first side surface and a second side surface which are opposite to each other, the first side surface includes a middle area and a peripheral area which is annularly arranged in the middle area, and the peripheral area is used for being combined with the diaphragm 20; and
and a thermal radiation enhancement layer 12 provided on the second side surface.
Obviously, in this embodiment, the second side surface is a side surface of the dome body 11 facing away from the diaphragm 20 and facing the air, so that the radiation direction of the thermal radiation enhancement layer 12 disposed on the second side surface is toward the air, and the heat is radiated into the air.
However, the design is not limited thereto, and in other embodiments, the thermal radiation enhancement layer 12 is disposed in the intermediate region; it can be understood that although the first side surface is the side surface of the dome body 11 facing the diaphragm 20 and facing away from the air, the position of the diaphragm 20 corresponding to the middle area is generally hollow, so that the thermal radiation enhancement layer 12 disposed in the middle area can radiate heat to the magnetic circuit system of the speaker through the hollow position of the diaphragm 20, and then radiate the heat to the air through the outer surface of the magnetic circuit system. Of course, in other further embodiments, the thermal radiation enhancement layer 12 may be provided both at said second side and at said intermediate region to dissipate heat into the air through both radiation directions and radiation paths.
It should be noted that the above embodiments are all based on the fact that the ball top 10 is combined with one side of the diaphragm 20, and the voice coil 30 is combined with the other side of the diaphragm 20. In practical applications, however, the dome 10 and the voice coil 30 may also be located on the same side of the diaphragm 20 (the side facing the magnetic circuit), in which case the middle region can face the air via a hollowed-out position on the diaphragm 20, while the second side faces away from the air and faces the magnetic circuit, and in such applications, similarly, the second side and/or the middle region is provided with the thermal radiation enhancement layer 12, but the radiation direction and the radiation path of the thermal radiation enhancement layer 12 of each of the second side and the middle region are exactly opposite to those of the previous embodiments.
In addition, in order to avoid the thermal radiation enhancement layer 12 from limiting the heat transfer efficiency between the diaphragm 20 and the dome 10, the thermal radiation enhancement layer 12 is not typically provided on the peripheral region.
It will be appreciated that in a loudspeaker, the primary heat source is the voice coil 30, and heat generated by the voice coil 30 is transferred to the diaphragm 20 and from the diaphragm 20 to the dome 10.
The technical scheme of the utility model is that the heat radiation enhancement layer 12 is additionally arranged on the second side surface and/or the middle area to improve the heat radiation capability of the dome 10, thereby improving the heat radiation capability of the dome 10; in this way, after the heat generated by the voice coil 30 is transferred to the dome 10 via the diaphragm 20, the heat can be radiated through the thermal radiation enhancement layer 12 of the dome 10 having a larger area, thereby improving the heat dissipation effect of the speaker.
Further, the thickness of the thermal radiation enhancement layer 12 is less than or equal to 20 micrometers. It will be appreciated that if the thermal radiation enhancement layer 12 is too thick, more thermal radiation enhancement material is required, higher cost, and may result in a heavier weight for the thermal radiation enhancement layer 12, adding too much weight to the dome 10, which may affect acoustic performance.
Further, the thickness of the thermal radiation enhancement layer 12 is greater than or equal to 3 micrometers. It can be understood that if the thermal radiation enhancement layer 12 is too thin, it is not favorable for the thermal radiation enhancement layer 12 to be covered on the second side surface and/or the middle region, and some positions are easily uncovered by the thermal radiation enhancement layer 12, which may affect the improvement of the heat dissipation capability of the dome 10.
In this embodiment, the thickness range of the thermal radiation enhancement layer 12 is 3 to 20 micrometers, and the thickness range is moderate, so as to consider the low cost, the low weight and the convenience of full-thickness preparation of the thermal radiation enhancement layer 12; and, this thickness is less, makes the utility model discloses dome 10 is for ordinary dome 10, and is convenient at thickness, weight and does not have obvious increase to make speaker acoustic performance do not change basically.
Further, the heat radiation enhancement layer 12 is made of one or more of nanocarbon, graphene, carbon tube, boron nitride, silicon carbide, and aluminum nitride. It can be understood that the materials such as nanocarbon, graphene, carbon tube, boron nitride, silicon carbide, aluminum nitride, etc. all have higher thermal emissivity, and can enhance the thermal radiation capability of the dome 10, thereby improving the heat dissipation effect of the dome 10. Taking the nano carbon as an example of the adopted thermal radiation enhancement material, the thermal radiation coefficient of the nano carbon is about 0.98, while the thermal radiation coefficient of the common aluminum material is only 0.55, so that the nano carbon material has higher thermal radiation coefficient; in addition, the nanocarbon is black, which is favorable for absorbing and storing infrared thermal radiation, and particularly, the operating temperature of the speaker may reach 100 degrees celsius, which is an infrared thermal radiation, so when the side surface of the dome 10 close to the magnetic circuit system (for example, the middle area of the dome in the embodiment of fig. 1) is provided with the thermal radiation enhancement layer 12, and the thermal radiation enhancement layer 12 is made of black material such as nanocarbon, the thermal radiation enhancement layer 12 can also absorb and store the heat radiated from the voice coil 30 well, and then radiate and dissipate the heat into the air rapidly through the side surface of the dome 10 facing the air (for example, the second side surface of the dome in the embodiment of fig. 1).
Further, the thermal radiation enhancement layer 12 is a granular layer to increase its heat dissipation surface area, thereby contributing to further enhancement of its thermal radiation capability, and thus further improving the heat dissipation capability of the dome 10. In this embodiment, the thermal radiation enhancement layer 12 is obtained by coating, which generally prepares a granular thermal radiation enhancement material (such as nano carbon) into a coating solution, and then coats the coating solution on the second side surface and/or the middle region of the dome body 11, and after the solvent in the coating solution is evaporated, the solidified thermal radiation enhancement layer 12 can be formed on the second side surface and/or the middle region of the dome body 11. In order to enhance the coating bonding force, optionally, the second side surface of the dome body 11 and/or the middle region may be roughened first, so that a micro concave-convex structure is formed on the second side surface and/or the middle region.
Referring to fig. 5, in fig. 5, a gray temperature rise curve is about the dome 10 of the present invention in which the nano carbon particle layer is provided, and a black temperature rise curve is about the general dome 10. From the temperature rise curve of fig. 5 compare the centering, can see, for ordinary dome 10, the utility model discloses a dome 10 can reduce about temperature rise 3.6 degrees centigrade (mean value), thereby explains the utility model discloses a dome 10 has better heat-sinking capability than ordinary dome 10.
Referring to fig. 3, in the present embodiment, the dome body 11 further includes a foaming material layer 111 and a heat conducting material layer 112 covering the foaming material layer 111. It can be understood that the foamed material is light in weight, which is beneficial to lightening the dome 10 and preventing the vibration performance of the diaphragm 20 from being affected; the thermal conductive material layer 112 is advantageous for guiding heat generated by the voice coil 30 to the thermal radiation enhancement layer 12 to improve the heat dissipation effect of the dome 10, and for enhancing the structural strength of the dome 10 to improve the impact resistance thereof.
In this embodiment, optionally, the heat conducting material layer 112 is a metal material layer; the metal material has high thermal conductivity, which is favorable for guiding heat generated by the voice coil 30 to the thermal radiation enhancement layer 12, and has good strength. Further alternatively, the metal material layer may be a copper material layer, an aluminum material layer, or the like, in order to achieve high thermal conductivity, low cost, and strong rigidity.
However, the design is not limited thereto, and in other embodiments, referring to fig. 4, the dome body 11 may also be a plastic layer. As can be appreciated, the plastic is lighter in weight, lower in cost, and easy to mold and prepare. Alternatively, the plastic layer may be, but not limited to, a PEN (polyethylene naphthalate) layer or a PET (polyethylene terephthalate) layer, both having good physical mechanical properties and heat resistance.
The utility model discloses still provide a speaker, refer to fig. 1 and fig. 2, this speaker includes vibrating diaphragm 20 and dome 10, and the concrete structure of this dome 10 refers to above-mentioned embodiment, because this speaker has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is not given here again. Wherein a peripheral region of the first side of the dome 10 is combined with the diaphragm 20.
Optionally, the peripheral area and the diaphragm 20 are bonded by a heat-conducting adhesive to enhance the heat transfer efficiency between the diaphragm 20 and the dome 10, so that the heat generated by the voice coil 30 can be quickly transferred to the dome 10 via the diaphragm 20, thereby facilitating the dome 10 to radiate the heat to the air through the heat radiation enhancement layer 12 thereof, and improving the heat dissipation effect of the speaker.
However, the design is not limited thereto, in other embodiments, the peripheral region and the diaphragm 20 may be combined by a common adhesive, but the thickness of the common adhesive is small, for example, 10 microns to 30 microns, and usually 20 microns, so that the diaphragm 20 and the dome 10 can also transfer heat faster.
Or, in still other embodiments, the peripheral region and the diaphragm 20 are combined by at least one ring of common adhesive, and at least one ring of heat-conducting glue is further disposed between the peripheral region and the diaphragm 20, so as to improve the heat transfer efficiency between the diaphragm 20 and the dome 10.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A dome for a speaker, the dome comprising:
the dome body is provided with a first side surface and a second side surface which are opposite, the first side surface comprises a middle area and a peripheral area which is annularly arranged in the middle area, and the peripheral area is used for being combined with a vibrating diaphragm of the loudspeaker; and
a thermal radiation enhancement layer disposed on the second side surface and/or the middle region.
2. The dome of claim 1 wherein the thermal radiation enhancement layer has a thickness of 20 microns or less.
3. The dome of claim 2 wherein the thermal radiation enhancement layer has a thickness of 3 microns or greater.
4. The dome according to claim 1, wherein the thermal radiation enhancement layer is made of one or more of nano-carbon, graphene, carbon tube, boron nitride, silicon carbide, and aluminum nitride.
5. The dome of claim 4 wherein the thermal radiation enhancement layer is a granular layer.
6. The dome of any one of claims 1 to 5, wherein the dome body comprises a foamed material layer, and a heat conductive material layer covering the foamed material layer; or,
the dome body is a plastic layer.
7. The dome of claim 6 wherein the layer of thermally conductive material is a layer of metallic material.
8. The dome of claim 6 wherein the plastic layer is a PEN layer or a PET layer.
9. A loudspeaker comprising a diaphragm and a dome as claimed in any one of claims 1 to 8, a peripheral region of a first side of the dome being bonded to the diaphragm.
10. A loudspeaker as claimed in claim 9, characterized in that the peripheral region is bonded to the diaphragm by means of a thermally conductive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020319597.7U CN211378241U (en) | 2020-03-13 | 2020-03-13 | Dome dome and loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020319597.7U CN211378241U (en) | 2020-03-13 | 2020-03-13 | Dome dome and loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211378241U true CN211378241U (en) | 2020-08-28 |
Family
ID=72155862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020319597.7U Active CN211378241U (en) | 2020-03-13 | 2020-03-13 | Dome dome and loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211378241U (en) |
-
2020
- 2020-03-13 CN CN202020319597.7U patent/CN211378241U/en active Active
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