CN211656368U - Audio playing device and electronic equipment - Google Patents
Audio playing device and electronic equipment Download PDFInfo
- Publication number
- CN211656368U CN211656368U CN202020517034.9U CN202020517034U CN211656368U CN 211656368 U CN211656368 U CN 211656368U CN 202020517034 U CN202020517034 U CN 202020517034U CN 211656368 U CN211656368 U CN 211656368U
- Authority
- CN
- China
- Prior art keywords
- voice coil
- magnetic
- audio playing
- magnetic liquid
- playing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The present disclosure relates to an audio playing device and an electronic apparatus, the audio playing device includes: permanent-magnet component, voice coil loudspeaker voice coil, vibrating diaphragm and magnetic fluid. The permanent magnetic piece of the audio playing device is provided with an accommodating part, magnetic liquid is contained in the accommodating part, and at least one part of the heat conduction matching part of the voice coil is immersed in the magnetic liquid, so that heat generated by the voice coil can be quickly diffused to the magnetic liquid and is dissipated through the permanent magnetic piece. And at least one of the inner side surface of the vibrating diaphragm, the inner side surface of the permanent magnetic piece and the surface of the voice coil is provided with a lyophobic layer, so that on the basis of improving the heat dissipation effect of the audio playing device and the electronic equipment using the audio playing device through magnetic liquid, the attachment of the magnetic liquid splashed out of the accommodating part is reduced or avoided through the lyophobic layer, and the heat dissipation performance of the magnetic liquid and the audio playing effect of the audio playing device are ensured.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to an audio playing apparatus and an electronic device.
Background
In the related art, an electronic device such as a mobile phone generally includes an audio playing device for implementing an audio playing function of the electronic device such as the mobile phone. The power increase of the audio playing device may cause heat accumulation of structures such as a voice coil in the audio playing device, which may cause problems such as burning and loosing loops, and further damage the audio playing device of the electronic device.
SUMMERY OF THE UTILITY MODEL
The present disclosure provides an audio playing device and an electronic apparatus, so as to improve a heat dissipation effect of the audio playing device.
According to a first aspect of the present disclosure, an audio playing device is provided, the audio playing device comprising: the voice coil is arranged on the magnetic liquid;
the permanent magnetic piece comprises at least one accommodating part and an inner side surface of the permanent magnetic piece positioned outside the accommodating part, and the magnetic liquid is accommodated in the accommodating part;
the voice coil comprises a diaphragm connecting part and a heat conduction matching part; the vibrating diaphragm connecting part is connected with the vibrating diaphragm; the heat conduction matching part is accommodated in the accommodating part, and at least one part of the heat conduction matching part is immersed in the magnetic liquid;
the vibrating diaphragm comprises a vibrating diaphragm inner side surface facing the voice coil; and at least one of the inner side surface of the vibrating diaphragm, the inner side surface of the permanent magnetic part and the surface of the voice coil is provided with a lyophobic layer.
Optionally, the inner side surface of the permanent magnet piece is arranged obliquely relative to the gravity direction of the magnetic liquid.
Optionally, a groove is formed in the inner side surface of the permanent magnet.
Optionally, an arc-shaped flow guide surface is arranged at the opening of the accommodating part.
Optionally, the volume height of the magnetic liquid is less than half of the depth of the accommodating part.
Optionally, the audio playing device further includes a circuit board, where the circuit board is provided with a voice coil control circuit, and the voice coil is electrically connected to the voice coil control circuit; the permanent magnetic part is in heat conduction fit with the circuit board.
Optionally, the circuit board includes a substrate and a copper exposed structure disposed on the substrate, and the permanent magnet is in contact fit with the copper exposed structure.
Optionally, the audio playing device further includes a heat conducting member, and the heat conducting member is respectively fitted to the permanent magnet member and the circuit board.
Optionally, the lyophobic layer comprises a nano-coating.
According to a second aspect of the present disclosure, an electronic device is provided, which includes a device main body and the audio playing apparatus, wherein the audio playing apparatus is assembled to the device main body.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
the accommodating part is arranged on the permanent magnetic piece of the audio playing device, the accommodating part is filled with the magnetic liquid, and at least one part of the heat conduction matching part of the voice coil is immersed in the magnetic liquid, so that the heat generated by the voice coil can be quickly diffused to the magnetic liquid and is dissipated through the permanent magnetic piece. And at least one of the inner side surface of the vibrating diaphragm, the inner side surface of the permanent magnetic piece and the surface of the voice coil is provided with a lyophobic layer, so that on the basis of improving the heat dissipation effect of the audio playing device and the electronic equipment using the audio playing device through magnetic liquid, the attachment of the magnetic liquid splashed out of the accommodating part is reduced or avoided through the lyophobic layer, and the heat dissipation performance of the magnetic liquid and the audio playing effect of the audio playing device are ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic cross-sectional structure diagram of an audio playing apparatus in an exemplary embodiment of the disclosure;
fig. 2 is a second schematic cross-sectional view illustrating an audio playing device according to an exemplary embodiment of the disclosure;
fig. 3 is a third schematic cross-sectional structure diagram of an audio playing apparatus in an exemplary embodiment of the disclosure;
FIG. 4 is a cross-sectional view of an audio player according to an exemplary embodiment of the disclosure;
fig. 5 is a schematic cross-sectional structure diagram of an audio playing apparatus at another angle in an exemplary embodiment of the disclosure;
fig. 6 is a fifth schematic cross-sectional structure diagram of an audio playing device in an exemplary embodiment of the disclosure;
fig. 7 is a sixth schematic cross-sectional view of an audio playback device in an exemplary embodiment of the disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the related art, an electronic device such as a mobile phone generally includes an audio playing device for implementing an audio playing function of the electronic device such as the mobile phone. The power increase of the audio playing device may cause heat accumulation of structures such as a voice coil in the audio playing device, which may cause problems such as burning and loosing loops, and further damage the audio playing device of the electronic device.
The present disclosure provides an audio playback apparatus, the audio playback apparatus including: permanent-magnet component, voice coil loudspeaker voice coil, vibrating diaphragm and magnetic fluid. The permanent magnetic piece comprises at least one accommodating part and an inner side face of the permanent magnetic piece positioned outside the accommodating part, and the magnetic liquid is contained in the accommodating part. The voice coil loudspeaker voice coil includes vibrating diaphragm connecting portion and heat conduction cooperation portion, and vibrating diaphragm connecting portion link to each other with the vibrating diaphragm, and heat conduction cooperation portion is acceptd in the portion of holding, and at least a part of heat conduction cooperation portion immerses in the magnetic fluid. The vibrating diaphragm includes the vibrating diaphragm medial surface towards the voice coil loudspeaker voice coil, is equipped with the lyophobic layer on at least one in vibrating diaphragm medial surface, permanent magnetism spare medial surface and the voice coil loudspeaker voice coil surface.
The permanent magnetic piece of the audio playing device is provided with an accommodating part, magnetic liquid is contained in the accommodating part, and at least one part of the heat conduction matching part of the voice coil is immersed in the magnetic liquid, so that heat generated by the voice coil can be quickly diffused to the magnetic liquid and is dissipated through the permanent magnetic piece. And at least one of the inner side surface of the vibrating diaphragm, the inner side surface of the permanent magnetic piece and the surface of the voice coil is provided with a lyophobic layer, so that on the basis of improving the heat dissipation effect of the audio playing device and the electronic equipment using the audio playing device through magnetic liquid, the attachment of the magnetic liquid splashed out of the accommodating part is reduced or avoided through the lyophobic layer, and the heat dissipation performance of the magnetic liquid and the audio playing effect of the audio playing device are ensured.
Fig. 1 is a schematic structural diagram of an audio playing apparatus in an exemplary embodiment of the present disclosure. As shown in fig. 1, the audio playback apparatus 1 includes: permanent magnet 11, voice coil 12, diaphragm 13 and magnetic liquid 14. The permanent magnet 11 comprises at least one accommodating part 111 and a permanent magnet inner side surface 112 positioned outside the accommodating part 111, and the magnetic liquid 14 is accommodated in the accommodating part 111. The voice coil 12 includes a diaphragm connecting portion 121 and a thermal conductive matching portion 122, the diaphragm connecting portion 121 is connected to the diaphragm 13, the thermal conductive matching portion 122 is accommodated in the accommodating portion 111, and at least a portion of the thermal conductive matching portion 122 is immersed in the magnetic liquid 14. The diaphragm 13 includes a diaphragm inner side surface 131 facing the voice coil 12, and the diaphragm inner side surface 131, the permanent magnet inner side surface 112, and the voice coil 12 are provided with a lyophobic layer 17 on the surface.
The accommodating portion 111 may be a magnetic gap provided in the permanent magnet 11, and when the heat-conducting engagement portion 122 of the voice coil 12 is accommodated in the magnetic gap and current is passed through the magnetic gap, a magnetic field formed by the voice coil 12 may interact with a magnetic field of the permanent magnet 11, so that the voice coil 12 may generate regular vibration. The permanent magnet 11 may be a magnetic steel, which is generally an alnico alloy, and is synthesized from several hard strong metals, such as fe, al, ni, and co, or cu, nb, and ta, and is used to manufacture an ultra-hard permanent magnet alloy.
The magnetic liquid 14 is also called magnetic liquid and ferrofluid, has the liquidity of liquid and the magnetism of a solid magnetic material, is stable colloidal liquid formed by mixing magnetic solid particles with the diameter of nanometer magnitude (below 10 nanometers), base carrier liquid and a surfactant, and has better electromagnetic property and heat conduction property. The magnetic liquid 14 has no magnetic attraction in a static state, and shows magnetism when an external magnetic field is applied. In the present disclosure, the carrier of magnetic liquid 14 may be a synthetic hydrocarbon, the saturation magnetization range of magnetic liquid 14 may be 110G-220G, and the viscosity range of magnetic liquid 14 may be 100cP-10000cP or 200cP-6000 cP. For example, the magnetic liquid 14 may be selected from Ferrotec APG1100, Ferrotec APG2100, and the like.
The lyophobic layer 17 may be a structure having lyophobic property, which is a structure that liquid cannot adhere to a surface of the structure, and the magnetic liquid 14 in the accommodating portion 111 is splashed and then is rapidly separated from the lyophobic layer 17, and then falls back into the accommodating portion 111 based on the gravity of the magnetic liquid 14, the surface tension of the magnetic liquid 14, and the magnetic force of the accommodating portion 111 of the permanent magnet 11. In some embodiments, the lyophobic layer 17 may be a nanocoating, such as a P2I nanocoating. In other embodiments, the lyophobic layer 17 may also be a plating layer, a film layer, etc. with lyophobic property, and when the lyophobic layer 17 is a plating layer, it may be directly plated on the inner side surface 131 of the diaphragm, the inner side surface 112 of the permanent magnet, and the surface of the voice coil 12, and when the lyophobic layer 17 is a film layer, it may be bonded on the inner side surface 131 of the diaphragm, the inner side surface 112 of the permanent magnet, and the surface of the voice coil 12.
In the above embodiment, the accommodating portion 111 is disposed on the permanent magnet 11 of the audio playing device 1, the accommodating portion 111 accommodates the magnetic liquid 14, and at least a part of the heat conduction matching portion 122 of the voice coil 12 is immersed in the magnetic liquid 14, so that heat generated by the voice coil 12 can be quickly diffused to the magnetic liquid 14 by utilizing the heat conduction performance of the magnetic liquid 14 superior to that of air and other media, and is dissipated through the permanent magnet 11, thereby improving the heat dissipation efficiency of the audio playing device 1, and contributing to the improvement of the working power and performance of the audio playing device 1 on the premise that the heat dissipation efficiency is increased. The magnetic liquid 14 can be absorbed in the containing part 111 of the permanent magnetic member 11 due to its own electromagnetic performance, so as to avoid leakage caused by shaking of the audio playing device 1, and ensure the heat dissipation reliability of the audio playing device 1 in a dynamic use scene. In addition, according to the audio playing device 1, the magnetic liquid 14 is added in the accommodating part 111 of the original permanent magnetic part 11, so that a heat dissipation structure is prevented from being additionally arranged in the audio playing device 1, a heat dissipation path and a heat dissipation structure are simplified, and the audio playing device 1 is facilitated to be miniaturized. The lyophobic layers 17 are arranged on the surfaces of the vibrating diaphragm inner side surface 131, the permanent magnet inner side surface 112 and the voice coil 12, and the magnetic liquid 14 splashed out of the accommodating part 111 is prevented from being attached through the lyophobic layers 17, so that the magnetic liquid 14 in the accommodating part 111 is prevented from reducing the influence on the heat dissipation effect of the voice coil, the magnetic liquid 14 is prevented from being attached to the interference on the audio playing function, and the heat dissipation performance of the magnetic liquid 14 and the audio playing effect of the audio playing device 1 are ensured.
In other embodiments, the lyophobic layer 17 is separately disposed on one or both of the diaphragm inner side 131, the permanent magnet inner side 112, and the surface of the voice coil 12. For example, lyophobic layer 17 can be set up at diaphragm medial surface 131 alone, because magnetic fluid 14 is higher at the probability that splashes the in-process and adheres to on diaphragm medial surface 131, and magnetic fluid 14 adheres to and influences great at diaphragm medial surface 131 to the broadcast effect of audio playback device 1, consequently set up lyophobic layer 17 at diaphragm medial surface 131 alone not only can greatly reduced the influence that magnetic fluid 14 adheres to and brings, can also reduce lyophobic layer 17 set up the area and set up the technology degree of difficulty. For another example, the lyophobic layer 17 may be provided on the diaphragm inner surface 131 and the permanent magnet inner surface 112 to further reduce the influence of the adhesion of the magnetic liquid 14.
In some embodiments, as shown in fig. 2, the dashed arrow in fig. 2 represents the gravity direction of the magnetic liquid 14, the inner side surface 112 of the permanent magnet member is disposed obliquely with respect to the gravity direction of the magnetic liquid 14, so that the lyophobic layer 17 disposed on the inner side surface 112 of the permanent magnet member forms an inclination angle for facilitating the sliding of the magnetic liquid 14, and when the magnetic liquid 14 splashes and contacts the lyophobic layer 17 on the inner side surface 112 of the permanent magnet member, the lyophobic performance of the lyophobic layer 17, the gravity of the magnetic liquid 14, the surface tension of the magnetic liquid 14, and the magnetic force of the accommodating part 111 of the permanent magnet member 11 can be matched based on the inclination angle, so as to prevent the magnetic liquid 14 from attaching to and accumulating on the inner.
In other embodiments, as shown in fig. 3, grooves 1121 are formed on the inner side surface 112 of the permanent magnet to form a guiding flow channel for the backflow of the magnetic fluid 14. When the magnetic liquid 14 splashes and contacts the lyophobic layer 17 on the inner side surface 112 of the permanent magnet piece, the magnetic liquid can flow into the groove 1121, and flows back into the accommodating part 111 based on the lyophobic performance of the lyophobic layer 17 on the surface of the groove 1121 matched with the groove 1211, the self gravity of the magnetic liquid 14, the surface tension of the magnetic liquid 14 and the magnetic force of the accommodating part 111 of the permanent magnet piece 11, so that the magnetic liquid 14 is prevented from adhering to and accumulating on the inner side surface 112 of the permanent magnet piece.
In another embodiment, as shown in fig. 4, the inner side surface 112 of the permanent magnet is disposed obliquely with respect to the gravity direction of the magnetic fluid 14, so that the lyophobic layer 17 disposed on the inner side surface 112 of the permanent magnet forms an inclination angle for the magnetic fluid 14 to slide down, and the inner side surface 112 of the permanent magnet is provided with a groove 1121 to form a guiding flow path for the backflow of the magnetic fluid 14. When the magnetic liquid 14 splashes and comes into contact with the lyophobic layer 17 on the inner surface 112 of the permanent magnet, the magnetic liquid 14 that does not flow into the groove 1121 can flow back into the accommodating portion 111 based on the inclination angle in accordance with the lyophobic performance of the lyophobic layer 17, the self-weight of the magnetic liquid 14, the surface tension of the magnetic liquid 14, and the magnetic force of the accommodating portion 111 of the permanent magnet 11. The magnetic liquid 14 flowing into the groove 1121 flows back into the accommodating part 111 based on the inclination angle and matching with the lyophobic performance of the lyophobic layer 17, the self gravity of the magnetic liquid 14, the surface tension of the magnetic liquid 14 and the magnetic force of the accommodating part 111 of the permanent magnet 11, so that the backflow effect of the magnetic liquid 14 is improved, and the attachment and accumulation of the magnetic liquid 14 on the inner side surface 112 of the permanent magnet are avoided.
In some embodiments, the audio playback device 1 further comprises a housing 18 to enclose the audio playback device 1. The case 18 includes a case inner surface 181 facing the voice coil 12, and the case inner surface 181 may be provided with a lyophobic layer 17 to prevent the magnetic liquid 14 from splashing and adhering to the case inner surface 181. When the magnetic liquid 14 splashes and comes into contact with the lyophobic layer 17 on the inner surface 181 of the housing, the lyophobic performance of the lyophobic layer 17, the gravity of the magnetic liquid 14, the surface tension of the magnetic liquid 14, and the magnetic force of the housing portion 111 of the permanent magnet 11 can be matched to flow back into the housing portion 111, thereby preventing the magnetic liquid 14 from adhering to and accumulating on the inner surface 181 of the housing.
When the audio playing device 1 works, a magnetic field formed after current is introduced into the voice coil 12 can interact with a magnetic field of the permanent magnetic part 11, so that the voice coil 12 generates regular vibration, and the vibrating diaphragm connecting part 121 of the voice coil 12 is connected with the vibrating diaphragm 13, so that the vibrating diaphragm 13 can generate sound along with the vibration of the voice coil 12. Voice coil 12 keeps during the vibration that at least a part of heat conduction cooperation portion 122 immerses in magnetic fluid 14 for possess the heat that voice coil 12 can be taken away to magnetic fluid 14 of good heat conductivility, and dispel the heat through permanent-magnet component 11, promoted the radiating effect to audio playback device 1. Wherein, the diaphragm connecting portion 121 may be bonded and matched with the diaphragm 13 to realize the fixation between the voice coil 12 and the diaphragm 13.
After the audio playing device 1 stops working, at least a portion of the heat-conducting matching portion 122 of the voice coil 12 is immersed in the magnetic liquid 14, and can continuously absorb and dissipate the residual heat on the voice coil 12, so as to avoid the problem of burning and dissipating the heat due to the accumulation of the heat on the voice coil 12, facilitate the performance maintenance of the voice coil 12, and improve the use performance and the service life of the audio playing device 1.
In some embodiments, the volume height of the magnetic liquid 14 is less than half the depth of the receptacle 111. The volume height of the magnetic fluid 14 may refer to a height of a highest liquid level of the magnetic fluid 14 relative to a bottom surface of the accommodating portion 111 when the magnetic fluid 14 is in the accommodating portion 111, and since the magnetic fluid 14 is in a liquid state and at least a part of the structure of the heat conduction matching portion 122 of the voice coil 12 is immersed in the magnetic fluid 14, the height of the highest liquid level of the magnetic fluid 14 after the heat conduction matching portion 122 is immersed may rise and may also splash during shaking or vertical vibration of the voice coil 12 and remain at other positions inside the diaphragm 13 or the audio playing device 1, and limiting the volume height of the magnetic fluid 14 may prevent the magnetic fluid 14 from overflowing after the heat conduction matching portion 122 is immersed, reduce a possibility that the magnetic fluid 14 splashes along with the vertical vibration of the voice coil 12, maintain a preset heat dissipation effect of the magnetic fluid 14, and avoid interference on a playing function of the. Or, on the premise of ensuring the immersion depth requirement of the heat-conducting matching part 122, the volume height of the magnetic liquid 14 may also be less than one third, and two thirds of the depth of the accommodating part 111, and may be set according to the specific heat dissipation requirement.
At least a part of the thermal conductive matching part 122 of the voice coil 12 is immersed in the magnetic liquid 14, wherein the thermal conductive matching part 122 may be a section of coil at one end of the voice coil 12, and the length of the thermal conductive matching part 122 may be set according to parameters such as viscosity and volume height of the magnetic liquid 14, so as to ensure that resistance force applied when at least a part of the thermal conductive matching part 122 vibrates in the magnetic liquid 14 does not affect the sound generating function of the diaphragm 13. For example, the length of the thermal conductive fitting 122 may be one of one third, one fourth, and two fifths of the total length of the coil of the voice coil 12.
In some embodiments, the opening of the accommodating portion 111 is provided with the arc-shaped guiding surface 1111, since the magnetic fluid 14 is in a liquid state, the magnetic fluid may splash and remain at other positions inside the diaphragm 13 or the audio playing device 1 during shaking or vertical vibration of the voice coil 12, when the opening of the accommodating portion 111 is provided with the arc-shaped guiding surface 1111, the magnetic fluid 14 can not only return to the accommodating portion 111 through its own gravity, surface tension of the magnetic fluid 14, and attraction force between the magnetic fluid 14 and the permanent magnet 11, but also slide into the accommodating portion 111 by virtue of the structure of the arc-shaped guiding surface 1111, thereby ensuring the amount of the magnetic fluid 14 in the accommodating portion 111 and the heat dissipation effect.
In another embodiment, the liquid repellent layer 17 may be disposed on the arc-shaped guide surface 1111 to prevent the magnetic liquid 14 from adhering to the arc-shaped guide surface and to facilitate the backflow of the magnetic liquid 14 to the receiving portion 111. When the magnetic liquid 14 splashes and contacts the lyophobic layer 17 on the arc-shaped guide surface 1111, the magnetic liquid 14 can flow back to the accommodating part 111 along the arc-shaped guide surface 1111 in cooperation with the lyophobic performance of the lyophobic layer 17, the self gravity of the magnetic liquid 14, the surface tension of the magnetic liquid 14 and the magnetic force of the accommodating part 111 of the permanent magnetic member 11, so that the magnetic liquid 14 is prevented from being attached to and accumulated on the arc-shaped guide surface 1111.
In some embodiments, as shown in fig. 5, the permanent magnet 11 is provided with a receiving portion 111, and the receiving portion 111 is one of a ring-shaped groove, a strip-shaped groove, an arc-shaped groove, and a circular groove provided on the permanent magnet 11. The annular groove can be a circular annular groove, a polygonal annular groove or an annular groove with an irregular cross section shape; the cross section of the strip-shaped groove can be rectangular, polygonal or other irregular shapes, the cross section of the circular groove is circular, and the cross section of the arc-shaped groove comprises arc-shaped edges. The annular groove, the strip-shaped groove, the arc-shaped groove and the circular groove are simple in structure and convenient to process. Voice coil 12 may include one or more thermally conductive fittings 122, with thermally conductive fittings 122 received in the annular grooves, and at least a portion of thermally conductive fittings 122 immersed in magnetic fluid 14.
In other embodiments, a plurality of accommodating portions 111 are provided on the permanent magnet 11, the voice coil 12 includes a plurality of heat-conducting matching portions 122, each accommodating portion 111 holds the magnetic fluid 14, and each heat-conducting matching portion 122 is accommodated in one accommodating portion 111. The accommodating portions 111 are arranged at intervals, so that mutual interference of the heat conduction matching portions 122 when the heat conduction matching portions vibrate along with the voice coil 12 is reduced, and excessive splashing caused by the mutual interference of the heat conduction matching portions 122 is avoided.
The plurality of accommodating portions 111 may be one or more of annular grooves, strip-shaped grooves, arc-shaped grooves, and circular grooves provided on the permanent magnet 11. The annular groove can be a circular annular groove, a polygonal annular groove or an annular groove with an irregular cross section shape, and the like, the cross section of the strip-shaped groove can be a rectangle, a polygon or other irregular shapes, and the cross section of the circular groove is circular, and the cross section of the arc-shaped groove comprises an arc-shaped edge.
In some embodiments, as shown in fig. 6, the audio playing apparatus 1 further includes a circuit board 15, a voice coil control circuit (not labeled) is disposed on the circuit board 15, the voice coil 12 is electrically connected to the voice coil control circuit, and the permanent magnet 11 is in heat-conducting fit with the circuit board 15. The diaphragm connecting portion 121 of the voice coil 12 is connected to the diaphragm 13 by vibration of the voice coil 12 by a voice coil control circuit on the circuit board 15, so that the diaphragm 13 can generate sound in accordance with the vibration of the voice coil 12. The permanent magnet 11 and the circuit board 15 are in heat conduction fit, so that heat absorbed by the magnetic fluid 14 from the voice coil 12 is dissipated through the permanent magnet 11 and the circuit board 15. Because vibrating diaphragm 13, permanent magnetic component 11 and shell isotructure enclose into a whole, voice coil 12 is located above-mentioned whole inside, and above-mentioned whole setting is in circuit board 15 top, and circuit board 15 is located above-mentioned whole outside, and above-mentioned structure setting has formed the heat conduction route from inside to outside with the help of circuit board 15's structure, has promoted audio playback device 1's radiating effect.
In the above embodiment, the circuit board 15 includes the substrate 151 and the copper exposed structure 152 disposed on the substrate 151, and the copper exposed structure 152 has a better heat dissipation performance. The permanent magnet 11 may be directly contacted and matched with the exposed copper structure 152, so as to conduct and dissipate heat on the permanent magnet 11 through the exposed copper structure 152, thereby enhancing the heat dissipation effect of the heat conduction path.
In other embodiments, as shown in fig. 7, the audio playing apparatus 1 includes a circuit board 15 and a heat conducting member 16, wherein the circuit board 15 is provided with a voice coil control circuit, and the voice coil 12 is electrically connected to the voice coil control circuit. The heat conducting members 16 are respectively fitted to the permanent magnet member 11 and the circuit board 15 to form a heat conducting fit of the permanent magnet member 11 and the circuit board 15. The heat conduction effect between the permanent magnet 11 and the circuit board 15 is enhanced by the heat conduction member 16, so that the heat conduction efficiency from the permanent magnet 11 to the circuit board 15 and the overall heat dissipation effect of the audio playing device 1 are improved.
In the above embodiment, the circuit board 15 includes the substrate 151 and the copper exposed structure 152 disposed on the substrate 151, and the copper exposed structure 152 has a better heat dissipation performance. The heat conducting member 16 can be in contact with the exposed copper structure 152 to conduct and dissipate heat on the permanent magnet 11 through the exposed copper structure 152, so as to enhance the heat dissipation effect of the heat conducting path. Alternatively, the heat-conducting member 16 may be directly engaged with the substrate 151 of the circuit board 15 to dissipate heat through the substrate 151.
The heat conductive member 16 is at least one of a graphite sheet and a copper foil. When the heat conducting member 16 is a graphite sheet, it has the properties of environmental protection, light weight and good heat conducting effect. The audio playback device 1 is a device for realizing sound playback, and may be a speaker.
The present disclosure further provides an electronic device, which includes a device main body and the audio playing device, wherein the audio playing device is assembled to the device main body.
The permanent magnet 11 of the audio playing device 1 is provided with the accommodating portion 111, the accommodating portion 111 is filled with the magnetic liquid 14, at least a part of the heat conduction matching portion 122 of the voice coil 12 is immersed in the magnetic liquid 14, so that heat generated by the voice coil 12 can be rapidly diffused to the magnetic liquid 14 and is dissipated through the permanent magnet 11, and therefore the heat dissipation effects of the audio playing device 1 and the electronic equipment using the audio playing device 1 are improved, and the improvement of the working power of the audio playing device 1 is facilitated on the premise that the heat dissipation efficiency is increased. In addition, the lyophobic layer 17 is arranged on at least one of the inner side surface 131 of the diaphragm, the inner side surface 112 of the permanent magnet piece and the surface of the voice coil 12, so that the lyophobic layer 17 reduces or avoids adhesion of the magnetic liquid 14 splashed out of the accommodating part 111 on the basis of improving the heat dissipation effect of the audio playing device 1 and the electronic equipment using the audio playing device 1 through the magnetic liquid 14, and the heat dissipation performance of the magnetic liquid 14 and the audio playing effect of the audio playing device 1 are ensured.
It should be noted that, the electronic device may be a mobile phone, a tablet computer, a vehicle-mounted terminal, a sound box, an earphone, or a medical terminal, and the disclosure does not limit this. Taking an electronic device as an example of a mobile phone, the magnetic liquid 14 can be adsorbed in the accommodating portion 111 of the permanent magnetic member 11 due to its own electromagnetic performance, so as to avoid leakage caused by shaking of the audio playing device 1, and the attachment of the magnetic liquid 14 splashed out of the accommodating portion 111 is reduced or avoided through the lyophobic layer 17, so as to ensure the heat dissipation performance of the magnetic liquid 14, the audio playing effect of the audio playing device 1, and the use reliability of the audio playing device 1 in a dynamic use scene of the mobile phone. In addition, according to the present disclosure, the magnetic liquid 14 is added in the accommodating portion 111 of the original permanent magnetic member 11 of the audio playing device 1, so as to avoid an additional heat dissipation structure in the audio playing device 1, simplify a heat dissipation path and a heat dissipation structure, and facilitate the miniaturization of the audio playing device 1 and the lightness and thinness of electronic devices such as mobile phones.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. An audio playback apparatus, comprising: the voice coil is arranged on the magnetic liquid;
the permanent magnetic piece comprises at least one accommodating part and an inner side surface of the permanent magnetic piece positioned outside the accommodating part, and the magnetic liquid is accommodated in the accommodating part;
the voice coil comprises a diaphragm connecting part and a heat conduction matching part; the vibrating diaphragm connecting part is connected with the vibrating diaphragm; the heat conduction matching part is accommodated in the accommodating part, and at least one part of the heat conduction matching part is immersed in the magnetic liquid;
the vibrating diaphragm comprises a vibrating diaphragm inner side surface facing the voice coil; and at least one of the inner side surface of the vibrating diaphragm, the inner side surface of the permanent magnetic part and the surface of the voice coil is provided with a lyophobic layer.
2. The audio playback device as claimed in claim 1, wherein the inner side surface of the permanent magnet is disposed obliquely to the gravity direction of the magnetic liquid.
3. The audio playback device as claimed in claim 1, wherein the permanent magnet member has a groove on an inner side thereof.
4. The audio playback device as claimed in claim 1, wherein an opening of the receiving portion is provided with an arc-shaped flow guide surface.
5. The audio playback device of claim 1, wherein a volume height of the magnetic fluid is less than half of a depth of the receptacle.
6. The audio playing device according to claim 1, further comprising a circuit board, wherein a voice coil control circuit is disposed on the circuit board, and the voice coil is electrically connected to the voice coil control circuit; the permanent magnetic part is in heat conduction fit with the circuit board.
7. The audio playing device as claimed in claim 6, wherein the circuit board includes a substrate and a copper exposed structure disposed on the substrate, and the permanent magnet is in contact with and engaged with the copper exposed structure.
8. The audio playback device of claim 6, further comprising a thermal conductor member coupled to the permanent magnet member and the circuit board, respectively.
9. The audio playback device of claim 1, wherein the lyophobic layer comprises a nanocoating.
10. An electronic device comprising a device main body and the audio playback apparatus according to any one of claims 1 to 9, the audio playback apparatus being assembled to the device main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517034.9U CN211656368U (en) | 2020-04-09 | 2020-04-09 | Audio playing device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517034.9U CN211656368U (en) | 2020-04-09 | 2020-04-09 | Audio playing device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211656368U true CN211656368U (en) | 2020-10-09 |
Family
ID=72688493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020517034.9U Active CN211656368U (en) | 2020-04-09 | 2020-04-09 | Audio playing device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211656368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112218217A (en) * | 2020-11-17 | 2021-01-12 | 无锡杰夫电声股份有限公司 | Voice coil loudspeaker voice coil with buffer structure stability is strong |
-
2020
- 2020-04-09 CN CN202020517034.9U patent/CN211656368U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112218217A (en) * | 2020-11-17 | 2021-01-12 | 无锡杰夫电声股份有限公司 | Voice coil loudspeaker voice coil with buffer structure stability is strong |
| CN112218217B (en) * | 2020-11-17 | 2021-09-07 | 无锡杰夫电声股份有限公司 | Voice coil loudspeaker voice coil with buffer structure stability is strong |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7038335B2 (en) | Vertical vibrator | |
| KR100535172B1 (en) | Electro-acoustic transducer and electronic device | |
| US5461677A (en) | Loudspeaker | |
| US9167324B2 (en) | Speaker module for portable terminal | |
| TW200810683A (en) | EMI shielding and thermal management assemblies including frames and covers with multi-position latching | |
| CN211656368U (en) | Audio playing device and electronic equipment | |
| EP1843628A1 (en) | Miniature loudspeaker and magnetic circuit having integrated air flow passage | |
| CN110366080B (en) | Speaker and audio device | |
| CN109587606B (en) | Sound production device and electronic equipment | |
| US20120133220A1 (en) | Apparatus for generating vibrations | |
| CN211656369U (en) | Audio playing device and electronic equipment | |
| KR20050080062A (en) | Ultra slim square micro speaker and the method | |
| KR101208243B1 (en) | Slim type speaker and magnetic circuit for it | |
| CN111405430A (en) | Audio playing device and electronic equipment | |
| JP2019079974A (en) | Coil component and on-vehicle electronic equipment comprising the same | |
| KR100555416B1 (en) | Ultra slim square micro speaker using voice coil of flat type | |
| CN111510829B (en) | Audio control method and device and electronic equipment | |
| CN114257930B (en) | Sound producing device and electronic equipment | |
| US6845168B2 (en) | Speaker for an electronic instrument | |
| WO2012065572A1 (en) | Vibration motor support, vibration motor component and installation method therefor, and vibration terminal device | |
| KR100503011B1 (en) | Small speaker | |
| KR20070089429A (en) | Micro speaker | |
| KR20190139496A (en) | Suspension and speaker assembly having the same | |
| KR100453927B1 (en) | Flat-panel speaker for mobile communication terminal | |
| CN216134644U (en) | Circuit board assembly and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |