阅读说明：本技术 一种电声器件及电子设备 (electroacoustic device and electronic equipment ) 是由 阮清波 于 2019-10-31 设计创作，主要内容包括：本发明公开一种电声器件及电子设备,所公开的电声器件包括壳体、线圈和磁性振动件,所述壳体具有内腔和至少一个出音孔,所述至少一个出音孔与所述内腔连通；所述线圈和所述磁性振动件均设置于所述内腔中、且均与所述壳体连接,所述线圈包括第一子线圈,所述第一子线圈位于所述磁性振动件的第一振动面的一侧。上述方案取消了磁路系统,既彻底解决了音圈与磁路系统触碰而出现杂音的问题,也避免出现漏磁而影响到电子设备的射频传输；同时,本发明所公开的电声器件内部结构简单,整体尺寸较小,外观形状无局限,对电子设备的结构设计需求的适应性较强。(The invention discloses electroacoustic devices and electronic equipment, wherein each electroacoustic device comprises a shell, a coil and a magnetic vibration piece, the shell is provided with an inner cavity and at least sound outlet holes, the at least sound outlet holes are communicated with the inner cavity, the coil and the magnetic vibration piece are both arranged in the inner cavity and are both connected with the shell, the coil comprises a th sub-coil, and the th sub-coil is positioned on the side of the th vibration surface of the magnetic vibration piece.)

The electroacoustic device is characterized by comprising a shell (100), a coil (200) and a magnetic vibrator (300), wherein the shell (100) is provided with an inner cavity (130) and at least sound outlet holes, the at least sound outlet holes are communicated with the inner cavity (130), the coil (200) and the magnetic vibrator (300) are both arranged in the inner cavity (130) and are both connected with the shell (100), the coil (200) comprises a th sub-coil (210), and the th sub-coil (210) is positioned on the side of a th vibrating surface of the magnetic vibrator (300).

2. The electroacoustic device of claim 1 wherein the vibrating surface of the magnetic vibrator (300) is spaced apart from the coil (200) and the vibrating surface of the magnetic vibrator (300) is spaced apart from the side wall of the case (100) in the vibrating direction of the magnetic vibrator (300).

3. The electroacoustic device of claim 1 wherein the coil (200) further comprises a second sub-coil (220), the second sub-coil (220) being located on the side of the second vibration plane of the magnetic vibrator (300).

4. The electroacoustic device of claim 3 wherein the magnetic vibrating member (300) is a soft magnetic vibrating member.

5. The electroacoustic device of wherein the magnetic vibrator (300) is connected to the casing (100) by an elastic connector (400), wherein an end of the elastic connector (400) is connected to an edge of the magnetic vibrator (300), and an end of the elastic connector (400) is connected to an inner wall of the casing (100).

6. The electroacoustic device as claimed in claim 5, wherein the elastic connector (400) has a folded ring shape, and the elastic connector (400) protrudes toward an th side wall, and the th side wall is any of both side walls of the housing (100) in a vibration direction of the magnetic vibrator (300).

7. The electroacoustic device of of any of claims 1 to 4, wherein the magnetic vibrating member (300) comprises a diaphragm (310) and a piece of magnetic material (320).

8. The electroacoustic device of claim 7, wherein the magnetic material (320) is arranged inside the diaphragm (310) or wherein the magnetic material (320) is arranged on the diaphragm (310).

9. The electroacoustic device of of any of claims 1 to 4, wherein the side wall of the housing (100) has sound outlet holes (140) formed in a side wall region corresponding to the center hole of the coil (200).

10. Electro-acoustic device according to , wherein the central hole of the coil (200) is provided with a piece (500) of magnetically heat conducting material.

11. The electro-acoustic device of , wherein the housing (100) comprises a th sub-housing (110) and a second sub-housing (120), the th sub-housing (110) and the second sub-housing (120) being detachably connected.

12. The electroacoustic device of any of of claims 1 to 4 wherein at least side walls of the housing (100) are provided with tuning cloth (600) on the side wall area corresponding to the sound outlet hole.

An electronic device of comprising an electroacoustic device as claimed in any of claims 1 to 12 at .

Technical Field

The invention relates to the technical field of communication, in particular to electroacoustic devices and electronic equipment.

Background

At present, is still a traditional electroacoustic device widely applied in sound generating equipment, but with the development of times and the improvement of experience requirements of people, the problems of the traditional electroacoustic device are more and more prominent.

The speaker generally includes a speaker unit including a vibration system provided with a diaphragm and a voice coil, and a magnetic circuit system for forming a magnetic gap for accommodating the voice coil, and a housing provided around the speaker unit. In practical applications, the problems of the conventional speaker mainly exist as follows: firstly, the traditional loudspeaker has high requirement on the concentricity of assembly, particularly a micro loudspeaker, if the concentricity is not good, a voice coil is easy to touch a magnetic circuit system, so that noise occurs when the loudspeaker sounds, but even if the concentricity is good, after long-time use, the voice coil is difficult to avoid the problem of noise caused by the contact of micro displacement and the magnetic circuit system; secondly, because the voice coil needs to be inserted into the corresponding magnetic gap, the voice coil is usually designed into a round shape or a square shape based on the consideration of the size utilization rate of the product, so the size utilization rate is higher, but the product shape limitation of the traditional loudspeaker is larger; furthermore, the magnetic circuit system in the conventional speaker includes a magnet and a metal part with a large volume, so that a serious magnetic leakage problem is easily caused, and radio frequency transmission in the electronic device is affected.

Disclosure of Invention

The invention discloses electroacoustic devices and electronic equipment, and aims to solve the problems that a conventional electroacoustic device is easy to cause noise due to coil collision, has large shape limitation and is easy to influence radio frequency transmission of the electronic equipment due to magnetic flux leakage.

In order to solve the problems, the invention adopts the following technical scheme:

, the embodiment of the invention provides electroacoustic devices, which comprise a shell, a coil and a magnetic vibrating piece, wherein the shell is provided with an inner cavity and at least sound outlet holes, the at least sound outlet holes are communicated with the inner cavity, the coil and the magnetic vibrating piece are both arranged in the inner cavity and are both connected with the shell, the coil comprises a th sub-coil, and the th sub-coil is positioned on the side of the th vibrating surface of the magnetic vibrating piece.

In a second aspect, the embodiment of the present invention further provides electronic devices, including the electroacoustic device described above.

In the embodiment of the invention, based on the magnetic effect of current, the th magnetic field is generated around the coil, the magnetic vibration piece in the electroacoustic device is magnetized to generate the second magnetic field, and the interaction of the two magnetic fields generates acting force on the magnetic vibration piece, so that the magnetic vibration piece vibrates and pushes air to generate sound waves.

Drawings

FIG. 1 is a schematic cross-sectional view of an electroacoustic device according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional structural view of a second electroacoustic device disclosed in an embodiment of the present invention;

FIG. 3 is an exploded view of a third electro-acoustic device according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a third electro-acoustic device according to an embodiment of the present disclosure;

fig. 5 to 7 are schematic cross-sectional structures of three diaphragms disclosed in the embodiment of the present invention.

Description of reference numerals:

100-shell, 110-th -th subshell, 120-second subshell, 130-inner cavity, 140-sound outlet,

200-coil, 210- th sub-coil, 220-second sub-coil,

300-magnetic vibration part, 310-diaphragm, 320-magnetic material,

400-elastic connecting piece, 500-magnetic heat conducting material piece and 600-sound adjusting cloth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, it is obvious that the described embodiments are only partial embodiments of the of the present invention, rather than all embodiments.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 7, an embodiment of the present invention discloses electroacoustic devices, which include a housing 100, a coil 200, and a magnetic vibrator 300.

The casing 100 is a basic component of the disclosed electroacoustic device, and provides a mounting base for the coil 200, the magnetic vibrating piece 300 and other components, the casing 100 has an inner cavity 130 and at least sound holes, at least sound holes are communicated with the inner cavity 130, the coil 200 and the magnetic vibrating piece 300 are disposed in the inner cavity 130 and are both connected with the casing 100. specifically, the coil 200 and the magnetic vibrating piece 300 are assembled in the inner cavity 130 and generate sound waves through mutual action, and the sound waves are propagated to the outside of the electroacoustic device through the sound holes during propagation. in the embodiment of the present invention, the connection relationship between the coil 200 and the casing 100 and the connection relationship between the magnetic vibrating piece 300 and the casing 100 may be various, for example, the coil 200 and the magnetic vibrating piece 300 may be directly connected with the side wall of the casing 100, or may be indirectly connected with the casing 100 by providing a support, particularly, the magnetic vibrating piece 300 may be completely suspended in the inner cavity 130 or partially suspended in the inner cavity 130, and the magnetic vibrating piece 300 may be capable of being easily implemented by only by providing a connection relationship between the inner cavity 130, or by providing a configuration that the two sound holes may be not limited.

The coil 200 comprises a sub-coil 210, and a sub-coil 210 is located on the side of the vibration plane of the magnetic vibrator 300. the electroacoustic device disclosed in the embodiments of the present invention is based on the magnetic effect of current, and electricity is applied to the coil 200 to generate a th magnetic field around the coil, and a th magnetic field magnetizes the magnetic vibrator 300, and then a second magnetic field is generated around the magnetic vibrator 300, and the two magnetic fields interact with each other to vibrate the magnetic vibrator 300 to generate sound waves.if the th sub-coil 210 and the magnetic vibrator 300 are located in the same plane, the vibration of the magnetic vibrator 300 may be small or even not be generated under the action force generated by the two magnetic fields, and therefore, the th coil 210 needs to be located on the side of the th vibration plane (among vibration planes) of the magnetic vibrator 300, and the required strength can be generated, and the embodiments of the present invention do not limit the specific number of the 6385 th sub-coil 210 to be limited, it may be , or two or more than 5848 sub-number of sub-coils, and may be located in the same plane, and the embodiment of the present invention may also be arranged in a multilayer structure of the present invention, such as .

In a specific working process, when the electroacoustic device is required to generate sound, a current signal is input into the th sub-coil 210, due to the magnetic effect of the current, a th magnetic field is generated around the th sub-coil 210, the th magnetic field generates a magnetization effect on the magnetic vibrator 300 in the inner cavity 130, the magnetic vibrator 300 generates a second magnetic field, when two magnetic fields generate attraction, the magnetic vibrator 300 receives attraction to move towards the th sub-coil 210, at this time, the current direction in the th sub-coil 210 is changed, the direction of the th magnetic field can be changed, at this time, due to mutual repulsion of like magnetic poles, under the action of the two magnetic fields, the magnetic vibrator 300 receives thrust to move away from the th sub-coil 210, by continuously changing the current direction in the th sub-coil 210, the interaction relationship between the th magnetic field and the second magnetic field can be alternately changed, so that the magnetic vibrator 300 receives the attraction and the thrust alternately, and in this process, the magnetic vibrator 300 generates different magnetic hard magnetic field, which indicates that the magnetic vibrator 300 generates different magnetic field, the magnetic field generating the above mentioned hard magnetic field is needed for example, and the demagnetizing process is good.

It can be known from the above working process that the electroacoustic device disclosed in the embodiment of the present invention generates the th magnetic field around the coil 200 based on the magnetic effect of the current, magnetizes the magnetic vibration member 300 in the electroacoustic device to generate the second magnetic field, and generates an acting force on the magnetic vibration member 300 through the interaction between the two magnetic fields, so that the magnetic vibration member 300 vibrates and pushes air to generate sound waves.

Since the vibration surface of the magnetic vibrator 300 is directly connected to the coil 200 or the sidewall of the case 100, the vibration operation of the magnetic vibrator 300 is inevitably hindered to affect the vibration effect, and even the magnetic vibrator 300 is difficult to vibrate. In view of this, in a more preferred embodiment, the vibration surface of the magnetic vibrator 300 may be provided at a distance from the coil 200 and also at a distance from the side wall of the case 100 in the vibration direction of the magnetic vibrator 300. Specifically, when a vibration space is left between the vibration surface of the magnetic vibrator 300 and the side walls of the coil 200 and the casing 100 in the vibration direction of the magnetic vibrator 300, the vibration surface of the magnetic vibrator 300 is not interfered by the side walls of the coil 200 or the casing 100 when the magnetic vibrator 300 vibrates, so that the magnetic vibrator 300 smoothly vibrates and generates sound waves.

Please refer to fig. 1 to fig. 4:

in an embodiment of the present invention, the coil 200 may further include a second sub-coil 220, the second sub-coil 220 is located at side of the second vibration surface of the magnetic vibrator 300, and specifically, the sub-coil 210 and the second sub-coil 220 are oppositely disposed at two sides of the magnetic vibrator 300, so as to generate different magnetic fields at two sides of the magnetic vibrator 300, and if current is alternately applied to the sub-coil 210 and the second sub-coil 220, the magnetic fields at two sides of the magnetic vibrator 300 alternately appear and alternately generate attraction to the magnetic vibrator 300, so that the magnetic vibrator 300 vibrates up and down to generate sound waves.

In a specific working process, when the electroacoustic device is required to generate sound, a current signal is input into the th sub-coil 210, due to the magnetic effect of the current, a th magnetic field is generated around the th sub-coil 210, the th magnetic field generates a magnetization effect on the magnetic vibrator 300 in the inner cavity 130, the magnetic vibrator 300 generates a second magnetic field, when the two magnetic fields are attracted to each other due to the attraction of unlike magnetic poles, the magnetic vibrator 300 is forced to move in the th sub-coil 210 direction, then the th sub-coil 210 internal current signal is interrupted, a current signal is input into the second sub-coil 220, at this time, the th magnetic field disappears, the second sub-coil 220 generates a third magnetic field around the second sub-coil 220 due to the magnetic effect of the current, the third magnetic field magnetizes the magnetic vibrator 300, the magnetic pole direction of the second magnetic field changes, finally, the second magnetic field and the third magnetic field attract each other, the magnetic vibrator 300 is forced to move in the second sub-coil 220 direction, and when the above-mentioned process is alternately performed, the sound wave of the magnetic vibrator 300 is generated.

Of course, like the sub-coil 210 , the embodiment of the present invention does not limit the specific number of the second sub-coils 220, which may be , two, or more, and meanwhile, when there are more than two second sub-coils 220, the embodiment of the present invention does not limit the arrangement manner of the second sub-coils 220, for example, the second sub-coils 220 may be arranged side by side in the same plane, or may be stacked in a multilayer structure, etc. in the embodiment of the present invention, more coils 200 may be arranged by increasing the size of the housing 100 within an allowable range, and the increase of the coils 200 may increase the magnetic field strength in the inner cavity 130, thereby increasing the effect on the magnetic vibrator 300, and the vibration frequency and the strength of the magnetic vibrator 300 may be increased, thereby enhancing the sound effect of the electroacoustic device.

Because the magnetic vibration member 300 needs to be magnetized by magnetic fields in different directions in the process of generating sound waves, in order to ensure the smoothness of the working process of the electroacoustic device, in a preferred scheme, the magnetic vibration member 300 may be a soft magnetic vibration member, and the soft magnetic material may be iron-silicon alloy (silicon steel sheet), various soft magnetic ferrites, and the like.

In order to improve the vibration effect of the magnetic vibrator 300 and optimize the sound intensity generated by the magnetic vibrator 300 and the overall sound effect of the electroacoustic device, in a preferred embodiment, the magnetic vibrator 300 may be connected to the housing 100 through the elastic connection member 400, the end of the elastic connection member 400 is connected to the edge of the magnetic vibrator 300, and the other end of the elastic connection member 400 is connected to the inner wall of the housing 100. when the magnetic vibrator 300 vibrates under the action of the magnetic field and is away from the initial position, due to the resilience characteristic of the elastic connection member 400, the elastic connection member 400 applies a force to pull the magnetic vibrator 300 to the initial position, and in combination with the attraction force of the magnetic field, the magnetic vibrator 300 obtains a higher acceleration to move in the opposite direction, and reciprocates in such a manner, thereby enhancing the vibration frequency and intensity of the magnetic vibrator 300.

In a more preferred embodiment, the elastic connection member 400 may be in a folded ring shape, and the elastic connection member 400 protrudes toward the th side wall, and the th side wall is any of the two side walls of the housing 100 in the vibration direction of the magnetic vibration member 300. in particular, the elastic connection member 400 in a folded ring shape has better resilience characteristics than the elastic connection member 400 in other shapes, and since the elastic connection member 400 protrudes toward any side walls of the housing 100 in the vibration direction of the magnetic vibration member 300, that is, the protruding direction is parallel or close to parallel to the direction of the magnetic vibration member 300, it is advantageous to enhance the vibration of the magnetic vibration member 300. the folded ring has a simple structure, is a conventional design in the electroacoustic field, and is advantageous to implementation and manufacturing of the embodiments of the present invention.

In embodiments, the elastic connecting element 400 may be a magnetic structure, and the magnetic material of the elastic connecting element 400 is the same as the magnetic material of the magnetic vibration element 300. as mentioned above, the magnetic vibration element 300 is magnetized by the (three) magnetic field generated by the coil 200, and generates the second magnetic field to interact with the (three) magnetic field, so that the magnetic vibration element 300 vibrates to generate sound waves, and similarly, in the above process, the elastic connecting element 400 is also magnetized by the (three) magnetic field generated by the coil 200, and generates a new magnetic field to interact with the (three) magnetic field generated by the coil 200, so that the elastic connecting element 400 can also vibrate, and further step enhances the vibration frequency and strength of the magnetic vibration element 300.

In the embodiment of the present invention, there are various ways to arrange the sound outlet, for example, the sound outlet may be arranged on the sidewall of the casing 100 between the adjacent coils 200, or on the sidewall of the casing 100 not correspondingly provided with the coil 200, which is not limited in the embodiment of the present invention. In a preferred embodiment, the sidewall of the casing 100 has a sound outlet 140 corresponding to the sidewall of the central hole of the coil 200. Specifically, the vibration center of the magnetic vibrating member 300 is generally located on the axis of the central hole of the coil 200 due to the magnetic field interaction between the coil 200 and the magnetic vibrating member 300, and at this time, the vibration intensity at the vibration center of the magnetic vibrating member 300 is maximized, the intensity of the generated sound wave is maximized, and the sound wave propagates toward the central hole of the coil 200; the sound hole 140 is formed in the side wall of the shell 100 corresponding to the central hole of the coil 200, so that the strongest sound wave can be conveniently transmitted out of the shell 100, and the sound transmission efficiency and sound effect of the electroacoustic device are better; secondly, the arrangement effectively improves the utilization rate of the inner space of the shell 100. Of course, the sound emitting holes 140 in this embodiment are not meant to be limiting.

Because the coil 200 generates heat during the power-on process, and the heat dissipation effect in the housing 100 is poor, the coil 200 may be damaged in the past, and based on this, in a preferable scheme, the central hole of the coil 200 may be provided with the magnetic heat conducting material 500. In a specific working process, the magnetic heat conducting material 500 can rapidly absorb heat generated by the coil 200, cool the coil 200 and protect the coil 200; meanwhile, the magnetic heat conductive material member 500 is magnetized by the magnetic field of the coil 200, and forms a new magnetic field in the magnetic vibration member 300, and acts on the magnetic vibration member 300, so that the vibration of the magnetic vibration member 300 is enhanced. In the embodiment of the present invention, the specific type of the magnetic heat conducting material 500 may be various, for example, metal members such as iron, nickel, etc., and the embodiment of the present invention is not limited thereto.

In order to improve the assembly convenience of the electroacoustic device, the housing 100 may be partially detachable, and the arrangement manner may be various, for example, the housing 100 may include a plurality of sub-housings, or the housing 100 may be cylindrical, the end of the housing 100 is open, and an end cap is disposed at the opening, which is not limited in the embodiment of the present invention.

In order to prevent impurities outside the casing 100 from entering the inner cavity 130, in a preferred embodiment, the tuning cloth 600 is disposed on the side wall of the casing 100 corresponding to the sound hole. Because the mesh that is provided with specific density on the tuning cloth 600, when the sound wave passed through these meshes, the tuning cloth 600 can play the tone quality of adjusting the electroacoustic device, the effect of audio, can also play waterproof dirt-proof effect simultaneously.

Please refer to fig. 5 to 7:

in order to optimize the sound effect of the electroacoustic device, in a preferred embodiment, the magnetic vibrating element 300 may include a diaphragm 310 and a magnetic material element 320. it should be noted that the diaphragm has the advantages of low density, good rigidity and moderate damping, specifically, the low density of the diaphragm makes the mass of the diaphragm light, and the vibration speed can be increased, the good rigidity of the diaphragm can avoid the occurrence of split vibration, so that the vibration frequency system of the diaphragm is synchronous, and the moderate damping of the diaphragm can respond to the magnetic field acting force at a higher speed.

, the magnetic material 320 may be disposed inside the diaphragm 310 in such a manner that is convenient to manufacture, and if coils 200 are disposed on both sides of the magnetic vibration member 300, the magnetic material 320 is located inside the diaphragm 310, so that the magnetic material 320 can maintain the same action strength as the coils 200 on both sides thereof, for example, the magnetic material 320 is disposed on the outer wall of the diaphragm 310 on the side of , the magnetic material 320 is likely to be closer to of the coils 200 and farther from coils 200, which may cause a difference in the action strength of the magnetic field, and may damage the diaphragm 310 after long-term use, in another embodiment, the magnetic material 320 may be disposed on the magnetic material 310, specifically, the magnetic material 320 may be disposed on the outer wall of the magnetic material 310, or the magnetic material 320 may be disposed on the outer wall of the diaphragm 310, so that the magnetic material 310 and the magnetic material 320 may be disposed in a manner that the magnetic field strength of the magnetic material 310 and the magnetic material of the diaphragm 310 are closer to each other magnetic material, so that the magnetic material 320 and the magnetic material may be disposed on the outer wall of the diaphragm 310, or the magnetic material may be disposed in a manner that the magnetic field strength of the magnetic material is closer to the magnetic material 310, and the magnetic material, such as a distance between the magnetic material of the magnetic material embedded in the magnetic vibration member 310, and the magnetic material embedded in the magnetic vibration member 320, and the magnetic material, and the magnetic vibration member, and the magnetic material, may be disposed between the magnetic material, so that the magnetic vibration member 320, and the magnetic material, and the magnetic vibration member.

The product shape of the traditional electroacoustic device is more limited, is round or square, but the electroacoustic device disclosed by the embodiment of the invention does not need to insert a voice coil into a magnetic gap, and a magnetic circuit system with a larger occupied area does not exist inside, so the shape of the electroacoustic device can be set to a special-shaped structure without limitation, and the external volume can be reduced, , compared with the traditional electroacoustic device in which the diaphragm is generally set to a paper disk shape, the shape limitation is larger, and for the above reasons, the shape of the magnetic vibrating piece 300 can also be set to a special-shaped structure without limitation, fig. 5 shows that the cross-sectional shape of the magnetic vibrating piece 300 is oval, fig. 6 shows that the cross-sectional shape of the magnetic vibrating piece 300 is irregular, of course, the magnetic vibrating piece 300 shown in fig. 5 and 6 is a specific embodiment in which the magnetic material piece 320 is arranged on the diaphragm 310, while the magnetic vibrating piece 300 under other embodiments of the magnetic material piece 320 and the diaphragm 310 can also be set to a special-shaped structure, as shown in fig. 7, that the magnetic material piece 320 is arranged on the outer wall of the diaphragm 310, and the magnetic vibrating piece 300 is designed to meet the requirements of the specific requirements of the acoustic effect enhancement of the electroacoustic device, and the acoustic effect of the electronic vibrating piece 300.

The embodiment of the invention also discloses kinds of electronic equipment which comprises the electroacoustic device.

The electronic device in the embodiment of the present invention may be a smart phone, a tablet computer, an electronic book reader, a wearable device, or other devices, and the embodiment of the present invention does not limit the specific type of the electronic device.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.