A magnetic levitation vibration isolation method, vibration isolation device, and electronic device

Abstract

The present invention discloses a magnetic levitation vibration isolation method, a vibration isolation device, and an electronic device. A magnetic levitation vibration isolation method is applied to a magnetic levitation vibration isolation device, and the magnetic levitation vibration isolation device includes a magnetic levitation system and a speaker module. The magnetic levitation vibration isolation method includes the following steps: adjusting the magnitude of the direct current supplied to the electromagnet according to the frequency and amplitude of the working audio signal of the speaker module; when the frequency and amplitude of the input signal cause the speaker to vibrate greatly, reducing the direct current supplied to the electromagnet, and controlling the magnetic force of the electromagnet to keep the speaker module suspended; when the frequency and amplitude of the input signal cause the speaker to vibrate slightly, increasing the direct current supplied to the electromagnet, and controlling the electromagnet to output a strong magnetic force to suspend the speaker module. A magnetic levitation vibration isolation device includes a magnetic levitation system and a speaker module, and the magnetic levitation system is used to keep the speaker module suspended.

Description

Technical Field

[0001] This application relates to the technical field of speaker devices, and specifically to a magnetic levitation vibration isolation method, a vibration isolation device, and an electronic device. Background Art

[0002] Embedded speakers are widely used in mobile devices and household appliances. With the development of technology, users' requirements for the sound quality of such products have also increased. In particular, higher requirements have been put forward for aspects such as the bandwidth and distortion of the speaker system, and even dedicated audio products are used as benchmark products. Different from audio products, these products using embedded speakers only have sound playback as one of their functions. In addition, they also need to take into account other functions, and these functions may conflict with the speaker playback in actual design.

[0003] For example, laptops, TVs, and projectors are equipped with built-in speakers for convenient audio output. When the speakers emit sound, vibrations are generated by the electromagnetic coil and the diaphragm. The vibrations of the diaphragm are transmitted to the air, and the sound waves drive the air to vibrate, enabling users to hear the audio output by the speakers. When the speakers emit sound, not only does it drive the air to vibrate, but its own component structure also vibrates, driving other components such as the housing and box connected to the speaker and the box where the speaker is installed to vibrate together. Due to the vibration, for example, the mechanical keyboard on the laptop, the outer shell of the TV are prone to generate vibration noise driven by the embedded speakers, and the optical engine of the projector will also shake due to the operation of the speakers, affecting the quality of the output image; thus seriously affecting the user experience.

[0004] In the prior art, to avoid this phenomenon, methods such as Figure 20 and Figure 21 are adopted. The vibration isolation washer 5 shown in the figure is applied to the connection and fixing points where the speaker is installed in the electronic product box and shell to achieve isolation; this vibration isolation washer 5 is generally made of solid rubber material, and relies on the material characteristics of the vibration isolation washer 5 itself to achieve absorption and attenuation, so as to avoid the vibration of the inner wall, shell and other components of the electronic device driven by the speaker. However, the vibration isolation effect of this vibration isolation washer 5 is limited. It cannot completely solve the vibration problem, resulting in the problems caused by vibration still existing in the devices using embedded speakers. Some products reduce the output of the embedded speakers in some frequency bands to eliminate such problems, reducing the playback sound quality. Summary of the Invention

[0005] The present invention mainly aims at the above problems and proposes a magnetic levitation vibration isolation method, a vibration isolation device, and an electronic device, aiming to solve the technical problems in the background art.

[0006] To achieve the above object, the present invention provides a magnetic levitation vibration isolation method, which is applied to a magnetic levitation vibration isolation device. The magnetic levitation vibration isolation device includes a magnetic levitation system and a speaker module. The repulsive force generated by the energization of the electromagnet in the magnetic levitation system suspends the speaker module. The magnetic levitation vibration isolation method includes the following steps:

[0007] Adjust the magnitude of the direct current supplied to the electromagnet according to the frequency and amplitude of the working audio signal of the speaker module;

[0008] When the frequency and amplitude of the input signal cause the speaker to vibrate greatly, reduce the direct current supplied to the electromagnet, and control the magnetic force of the electromagnet to keep the speaker module suspended;

[0009] When the frequency and amplitude of the input signal cause the speaker to vibrate slightly, increase the direct current supplied to the electromagnet, and control the electromagnet to output a strong magnetic force to suspend the speaker module.

[0010] Further, when the speaker is on standby, supply a small direct current to the electromagnet, and control the magnetic force of the electromagnet to keep the speaker module suspended.

[0011] A magnetic levitation vibration isolation device includes a magnetic levitation system and a speaker module. The magnetic levitation system is used to keep the speaker module suspended.

[0012] Further, the magnetic levitation system includes a first magnetic body, a second magnetic body, and a third magnetic body. The magnetization directions of the first magnetic body and the second magnetic body are the same. The third magnetic body is located between the first magnetic body and the second magnetic body, and there is a suspension active area between the third magnetic body and the first magnetic body and the second magnetic body. The magnetization direction of the third magnetic body is opposite to the magnetization directions of the first magnetic body and the second magnetic body. The speaker module is provided with a connection part connected to the third magnetic body.

[0013] Further, the first magnetic body, the second magnetic body, and the third magnetic body are all permanent magnets.

[0014] Further, the first magnetic body and / or the second magnetic body and / or the third magnetic body is an electromagnet.

[0015] An electronic device includes the aforementioned magnetic levitation system and speaker module. The magnetic levitation system and the speaker module are arranged in the inner cavity of the electronic device, and the magnetic levitation system isolates the speaker module from contacting the inner wall of the electronic device.

[0016] Further, the electronic device includes a closable lower housing and an upper cover. The first magnetic body and the second magnetic body are respectively installed on the inner walls of the lower housing and the upper cover.

[0017] Further, it includes a support member connected to the inner wall of the electronic device, and the first magnetic body is installed on the inner wall of the electronic device; the second magnetic body is installed on the support member.

[0018] Compared with the prior art, a magnetic levitation vibration isolation method, a vibration isolation device, and an electronic device provided by the present invention can suspend the speaker module through a magnetic levitation system, lift the speaker module, and adjust the original surface contact, line contact, or point contact of directly connecting the speaker module to the inner wall of the electronic product or connecting it to the inside of the electronic product through a traditional vibration isolation gasket to no longer contact. In this way, when the speaker module works and vibrates, the vibration of the speaker module is greatly avoided from being transmitted to the electronic product box or housing and other components adjacent to the speaker module, thus avoiding causing vibrations that are not expected by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional side view schematic diagram of Embodiment 1, Embodiment 4, and Embodiment 17 of the present application.

[0020] Figure 2 It is an exploded view of the structures of Embodiment 1, Embodiment 4, and Embodiment 17 of the present application.

[0021] Figure 3 It is a schematic diagram of the structure of Embodiment 18 of the present application.

[0022] Figure 4 It is an exploded view of the structures of Embodiment 4 and Embodiment 18 of the present application.

[0023] Figure 5 It is an exploded view of the structures of Embodiment 1, Embodiment 5, and Embodiment 17 of the present application.

[0024] Figure 6 It is a schematic diagram of the structures of Embodiment 2, Embodiment 3, and Embodiment 17 of the present application.

[0025] Figure 7 It is an exploded view of the structures of Embodiment 2, Embodiment 3, and Embodiment 17 of the present application.

[0026] Figure 8 It is a schematic diagram of the structures of Embodiment 2, Embodiment 3, and Embodiment 18 of the present application.

[0027] Figure 9 It is a schematic diagram of the structure of Embodiment 3 of the present application.

[0028] Figure 10 It is a schematic diagram of the structure of Embodiment 4 of the present application.

[0029] Figure 11 It is a sectional view schematic diagram of Embodiment 5 of the present application.

[0030] Figure 12 This is a schematic structural diagram of the sixth embodiment of the present application.

[0031] Figure 13 This is a schematic structural diagram of the seventh embodiment of the present application.

[0032] Figure 14 This is a schematic structural diagram of the eighth embodiment of the present application.

[0033] Figure 15 This is a schematic structural diagram of the ninth embodiment of the present application.

[0034] Figure 16 This is a schematic structural diagram of the tenth embodiment of the present application.

[0035] Figure 17 This is a schematic structural diagram of the eleventh embodiment of the present application.

[0036] Figure 18 This is a schematic structural diagram of the twelfth embodiment of the present application.

[0037] Figure 19 This is a schematic structural diagram of the thirteenth embodiment of the present application.

[0038] Figure 20 This is a schematic structural diagram of a vibration isolation washer in the prior art.

[0039] Figure 21 This is an exploded schematic structural diagram of a speaker module connected to the inner wall or the side wall of a housing of an electronic product through a vibration isolation washer in the prior art.

[0040] Reference numerals shown in the figures: 1, magnetic levitation system; 110, first magnetic body; 120, second magnetic body; 130, third magnetic body; 140, suspension active area; 2, speaker module; 201, speaker unit; 202, speaker module housing; 210, connecting portion; 3, inner wall of electronic device; 310, lower housing; 320, upper cover; 330, clamping groove; 4, support member; 5, vibration isolation washer; 6, limiting member. Detailed implementation manners

[0041] This embodiment provides a magnetic levitation vibration isolation method applied to a magnetic levitation vibration isolation device. The magnetic levitation vibration isolation device includes a magnetic levitation system and a speaker module. The repulsive force generated by the energization of the electromagnet in the magnetic levitation system suspends the speaker module. The magnetic levitation vibration isolation method includes the following steps:

[0042] Adjust the magnitude of the direct current supplied to the electromagnet according to the frequency and amplitude of the working audio signal of the speaker module;

[0043] When the vibration transmission of the speaker is large, reduce the direct current flowing through the electromagnet, increase the compliance of the suspension system, and reduce the vibration transmission.

[0044] When the vibration transmission of the speaker is small, increase the direct current flowing through the electromagnet, reduce the compliance of the suspension system, so that the suspension system has sufficient supporting force, and maximize the efficiency of the speaker module radiating sound outward.

[0045] When the speaker vibrates during operation and emits energy transmitted by waves, the propagation characteristic of the wave is that in the direction of wave propagation, the previous particle in the medium drives the subsequent particle to vibrate in turn; forming an energy wave that diffuses towards the periphery of the speaker with the speaker as the wave source; when the wave is transmitted to the medium of air, it becomes a sound wave that can be heard by the human ear; when the wave is transmitted to solid media such as the box, housing, and other electronic components that are installed and connected adjacent to the speaker, it will cause mechanical vibrations, shakes, jitters, and noises that the user does not want, affecting the user experience.

[0046] This magnetic levitation vibration isolation method suspends the speaker module by the repulsive force generated by the energization of the electromagnet in the magnetic levitation system, raises the speaker, and adjusts the surface contact that originally directly connects the speaker to the inner wall of the electronic product or connects to the inside of the electronic product through the traditional vibration isolation gasket 5 so that the speaker no longer makes contact. In this way, when the speaker works and makes sound and vibrates, it breaks through the limitation that the compliance of the existing vibration isolation gasket 5 completely depends on the physical properties of the material, and greatly avoids the transmission of the speaker vibration to the electronic product box or housing and other components adjacent to the speaker, avoiding vibrations that the user does not expect.

[0047] Since the vibration of the speaker generates power when playing audio, when the weak magnetic force generated by the energization of the electromagnet of the magnetic levitation system results in a small repulsive force between the magnetic parts of the magnetic levitation system, that is, when the speaker module is more likely to move under the support of the magnetic levitation system due to the sound vibration of the speaker, at this time the compliance of the suspension system is large and the system resonance frequency is small, which can effectively avoid the outward propagation of vibration through the reaction force, and the amplitude of the module is large. This phenomenon occurs when the current flowing through the electromagnet is a moderately small current.

[0048] When the compliance of the suspension system is small, that is, when a large current is passed through the electromagnet of the maglev system to generate a strong magnetic field, enhancing the lifting stiffness of the speaker module and making it difficult for the speaker module to move, in this case, the vibration isolation performance of the speaker module is poor, but the speaker playback efficiency is high. Therefore, in the present invention, for audio playback, according to the frequency and amplitude of the audio signal in real time, the magnitude of the direct current passed through the electromagnet in the maglev system is adjusted accordingly. When the speaker vibrates greatly, the direct current supplied to the electromagnet is reduced to control the magnetic force of the electromagnet to keep the speaker module suspended. When the speaker vibrates slightly, the direct current supplied to the electromagnet is increased to control the electromagnet to output a strong magnetic force to suspend the speaker module, that is, to control the compliance of the suspension system to achieve the optimal audio playback effect.

[0049] Further, when the speaker is on standby, a small direct current is supplied to the electromagnet to control the magnetic force of the electromagnet to keep the speaker module suspended.

[0050] When the speaker is on standby, the speaker module also needs to be kept in a suspended state. Otherwise, when the electromagnet is powered off in the maglev system, when there are both electromagnets and permanent magnets in the maglev system, the permanent magnet will adsorb the speaker module to any side; when all are electromagnets in the maglev system, the speaker module will be affected by gravity and fall along the direction of gravity or external force and will no longer be suspended;

[0051] This will cause the maglev system to be misaligned, resulting in the permanent magnet or electromagnet in the maglev system being unable to fall into the magnetic field trap when power is restored, unable to successfully suspend the speaker module, or causing the speaker module to be suspended misaligned, affecting the vibration isolation function;

[0052] In the present invention, when the speaker is powered off during standby, the electromagnet in the maglev system is still continuously powered on, and the direct current of this power supply is so small that it can only make the magnetic force and repulsive force generated by the electromagnet overcome the gravity of the speaker module, and ensure that the speaker module is not misaligned, and the suspended part of the speaker module still falls within the designed range. When the speaker module needs to output audio for work, the speaker module can continue to be normally suspended after being powered on.

[0053] Since speaker modules of different specifications have different weights and are subject to different gravities, the magnitude of the current passing through the electromagnet in the maglev system needs to be determined through calculation to obtain the minimum current value that can make the magnetic force and repulsive force generated by the electromagnet overcome the gravity of the speaker module and ensure that the speaker module is not misaligned.

[0054] Please refer to Figure 2 - Figure 19 As shown in, the present invention provides a magnetic levitation vibration isolation device, including a magnetic levitation system 1 and a speaker module 2, and the magnetic levitation system 1 is used to keep the speaker module 2 suspended.

[0055] This magnetic levitation vibration isolation device suspends the speaker module 2 through the magnetic levitation system 1, raises the speaker module 2, and adjusts the surface contact where the speaker module 2 was originally directly connected to the inner wall of the electronic product or connected to the inside of the electronic product through the traditional vibration isolation gasket 5 to a situation where the speaker module 2 no longer makes contact. In this way, when the speaker module 2 works and generates sound and vibration, it breaks through the limitation that the compliance of the existing vibration isolation gasket 5 completely depends on the physical properties of the material, and greatly avoids the transmission of the vibration of the speaker module 2 to the electronic product box or housing and other components adjacent to the speaker module 2, thus preventing the occurrence of vibrations that are not expected by the user.

[0056] Please refer to Figure 2 - Figure 19 As shown in, the magnetic levitation system 1 includes a first magnetic body 110, a second magnetic body 120, and a third magnetic body 130; the magnetization directions of the first magnetic body 110 and the second magnetic body 120 are the same; the third magnetic body 130 is located between the first magnetic body 110 and the second magnetic body 120, and there is a suspension activity area 140 between the third magnetic body 130 and the first magnetic body 110 and the second magnetic body 120; the magnetization direction of the third magnetic body 130 is opposite to the magnetization directions of the first magnetic body 110 and the second magnetic body 120; the speaker module 2 is provided with a connection part 210 connected to the third magnetic body 130.

[0057] With this layout, both the first magnetic body 110 and the second magnetic body 120 generate magnetic forces on the third magnetic body 130, forming a magnetic trap. Therefore, the third magnetic body 130 can be suspended between the first magnetic body 110 and the second magnetic body 120, and can move when it is subjected to the internal vibration force of the speaker module 2 within the suspension activity area 140. The speaker module 2 connected to the third magnetic body 130 through the connection part 210 can also achieve the purpose of suspension under the action of the magnetic trap and the third magnetic body 130.

[0058] The speaker module 2 includes a speaker unit 201 and a speaker module housing 202 for installing the speaker unit 201;

[0059] Please refer to Figure 1 、 Figure 3 、and Figure 5 Example 1

[0060] The connection part 210 is a connection groove provided on the end face of the speaker module housing 202, and the third magnetic body 130 is embedded in the connection groove, being integrated with the speaker module 2.

[0061] Please refer to Figure 6 - Figure 8 Example 2

[0062] The connecting part 210 is a connecting arm arranged on the outer edge of the housing 202 of the speaker module. A connecting groove is provided on the connecting arm, and the third magnetic body 130 is embedded in the connecting groove and integrated with the speaker module 2.

[0063] In some embodiments, the first magnetic body 110, the second magnetic body 120, and the third magnetic body 130 are all permanent magnets.

[0064] Please refer to Figure 6 - Figure 9 , Embodiment Three

[0065] The first magnetic body 110 and the second magnetic body 120 of a group of magnetic levitation systems 1 are in a circular ring structure, and the third magnetic body 130 is in a cylindrical sheet structure and is located between the first magnetic body 110 and the second magnetic body 120.

[0066] Please refer to Figure 1 , Figure 2 and Figure 4 , Figure 10 , Embodiment Four

[0067] The first magnetic body 110 and the second magnetic body 120 of a group of magnetic levitation systems 1 are in a circular ring structure, and the third magnetic body 130 is in a cylindrical structure and is located between the first magnetic body 110 and the second magnetic body 120.

[0068] Please refer to Figure 5 and Figure 11 , Embodiment Five

[0069] The first magnetic body 110 and the second magnetic body 120 of a group of magnetic levitation systems 1 are in a circular ring structure, and the third magnetic body 130 is two cylindrical sheets. The two cylindrical sheets are spaced and arranged in the connecting groove of the housing 202 of the speaker module. This form is applicable to the case where the speaker module 2 is relatively thick, saving the material of the third magnetic body 130 in Embodiment Four, reducing the weight, and saving costs.

[0070] Please refer to Figure 12 , Embodiment Six

[0071] The first magnetic body 110 and the second magnetic body 120 of a group of magnetic levitation systems 1 are both composed of three spaced circular arc magnetic segment bodies to form a circular ring structure, and the third magnetic body 130 is in a cylindrical sheet structure and is located between the first magnetic body 110 and the second magnetic body 120; this design reduces the material used for the first magnetic body 110 and the second magnetic body 120, saves costs, and can also ensure the magnetic levitation effect of the magnetic levitation system 1 on the speaker module 2.

[0072] Please refer to Figure 13 , Embodiment Seven

[0073] For a set of magnetic levitation systems 1, both the first magnetic body 110 and the second magnetic body 120 are circular arc magnetic segment bodies with intervals, forming a ring structure, and the third magnetic body 130 is a cylindrical sheet structure located between the first magnetic body 110 and the second magnetic body 120; this design reduces the material used for the first magnetic body 110 and the second magnetic body 120, saves costs, and at the same time can ensure the magnetic levitation effect of the magnetic levitation system 1 on the speaker module 2.

[0074] Please refer to Figure 14 , Example Eight

[0075] For a set of magnetic levitation systems 1, both the first magnetic body 110 and the second magnetic body 120 are square magnetic sheet structures with square inner holes, and the third magnetic body 130 (not shown) is located between the first magnetic body 110 and the second magnetic body 120.

[0076] Please refer to Figure 15 , Example Nine

[0077] For a set of magnetic levitation systems 1, both the first magnetic body 110 and the second magnetic body 120 are square magnetic sheet structures with circular inner holes, and the third magnetic body 130 (not shown) is located between the first magnetic body 110 and the second magnetic body 120.

[0078] Please refer to Figure 16 , Example Ten

[0079] For a set of magnetic levitation systems 1, both the first magnetic body 110 and the second magnetic body 120 are cylindrical magnetic sheet structures with square inner holes, and the third magnetic body 130 (not shown) is located between the first magnetic body 110 and the second magnetic body 120.

[0080] Please refer to Figure 17 , Example Eleven

[0081] In a set of magnetic levitation systems 1, both the first magnetic body 110 and the second magnetic body 120 are four square magnetic sheets arranged distributively, and the third magnetic body 130 is a cylindrical sheet structure located between the first magnetic body 110 and the second magnetic body 120; preferably, the four square magnetic sheets of the first magnetic body 110 and the second magnetic body 120 are circumferentially and uniformly arranged along the axis of the third magnetic body 130.

[0082] Please refer to Figure 18 , Example Twelve

[0083] In a set of magnetic levitation systems 1, both the first magnetic body 110 and the second magnetic body 120 are three cylindrical magnetic sheets arranged distributively, and the third magnetic body 130 is a cylindrical sheet structure located between the first magnetic body 110 and the second magnetic body 120; preferably, the three cylindrical magnetic sheets of the first magnetic body 110 and the second magnetic body 120 are circumferentially and uniformly arranged along the axis of the third magnetic body 130.

[0084] Please refer to Figure 19 , Embodiment Thirteen

[0085] In a group of magnetic levitation systems 1, the first magnetic body 110 and the second magnetic body 120 are both three square magnetic sheets arranged distributively, and the third magnetic body 130 (not shown) is located between the first magnetic body 110 and the second magnetic body 120; preferably, the three square magnetic sheets of the first magnetic body 110 and the second magnetic body 120 are circumferentially and evenly arranged along the axis of the third magnetic body 130.

[0086] In some embodiments, the first magnetic body 110 and / or the second magnetic body 120 and / or the third magnetic body 130 is an electromagnet (not shown).

[0087] Embodiment Fourteen

[0088] The first magnetic body 110 and the second magnetic body 120 are electromagnets, and the third magnetic body 130 is a permanent magnet.

[0089] Embodiment Fifteen

[0090] The third magnetic body 130 is an electromagnet, and the first magnetic body 110 and the second magnetic body 120 are permanent magnets.

[0091] Embodiment Sixteen

[0092] The first magnetic body 110, the second magnetic body 120, and the third magnetic body 130 are all electromagnets.

[0093] Please refer to Figure 1 - Figure 19 , This embodiment provides an electronic device, including the aforementioned magnetic levitation system 1 and a speaker module 2; the magnetic levitation system 1 and the speaker module 2 are arranged in the inner cavity of the electronic device, and the magnetic levitation system 1 isolates the speaker module 2 from contacting the inner wall 3 of the electronic device.

[0094] The inner wall 3 of the electronic device, that is, the panel housing of the electronic device; for the convenience of observing the structure in which the inner wall 3 of the electronic device in the inner cavity of the electronic product is connected to the speaker module 2 through the magnetic levitation system 1, Figure 1 - Figure 8 the inner wall 3 of the electronic device shown in

[0095] In this embedded speaker box structure, by using the aforementioned magnetic levitation system 1 to form a suspension system at the connection and fixation position between the speaker module 2 and the inner wall 3 of the electronic device, the propagation of the sound vibration of the speaker module 2 in the transmission link is greatly avoided, and the influence of the vibration of the speaker module 2 on other components is alleviated.

[0096] The electronic device includes a closable lower housing 310 and an upper cover 320; the first magnetic body 110 and the second magnetic body 120 are respectively installed on the inner walls of the lower housing 310 and the upper cover 320.

[0097] Please refer to Figure 1 , Figure 2 and Figures 5 - 7 , Embodiment XVII

[0098] In this embodiment, the first magnetic body 110 and the second magnetic body 120 are respectively installed on the inner walls of the lower housing 310 and the upper cover 320, and they can be fixed to each other by gluing. That is, after the upper cover 320 and the lower housing 310 are covered and assembled, a magnetic trap is formed. Then, the speaker module 2 is pushed in from the side of the third magnetic body 130 connected to the speaker module 2, and the three magnetic bodies form a magnetic levitation system 1, and subsequently the speaker module 2 is lifted and levitated.

[0099] Alternatively, the third magnetic body 130 connecting the speaker module 2 to the speaker module 2 can be pre-placed above the corresponding second magnetic body 120 of the lower housing 310, and then the upper cover 320 is covered towards the speaker module 2 so that the first magnetic body 110 corresponds to the third magnetic body 130.

[0100] Preferably, both the lower housing 310 and the upper cover 320 are provided with clamping grooves 330. On the one hand, the clamping grooves 330 tightly clamp the first magnetic body 110 and the second magnetic body 120, and on the other hand, they save the space occupied by the first magnetic body 110 and the second magnetic body 120 themselves.

[0101] Please refer to Figure 3 , Figure 4 and Figure 8 , Embodiment XVIII

[0102] It includes a support member 4 connected to the inner wall 3 of the electronic device, the first magnetic body 110 is installed on the inner wall 3 of the electronic device; the second magnetic body 120 is installed on the support member 4.

[0103] In Embodiment XVII, when the first magnetic body 110 and the second magnetic body 120 are respectively installed on the inner walls of the lower housing 310 and the upper cover 320 and form a magnetic levitation system 1 with the subsequent third magnetic body 130 connected to the speaker module 2, the installation success rate is low. Workers are not limited to the operation, and it is easy for the third magnetic body 130 to be misaligned and skewed with the first magnetic body 110 and the second magnetic body 120. The operation difficulty is high and it is difficult to debug.

[0104] In this embodiment, by providing a support member 4. Preferably, the support member 4 is formed by two perpendicular support plates, forming an L-shaped structure in a side view projection. One of the two support plates is perpendicular to the inner wall 3 of the electronic device, and the other is parallel to the inner wall 3 of the electronic device. In this way, the first magnetic body 110 is installed on the inner wall 3 of the electronic device. After the first magnetic body 110 is installed on the inner wall 3 of the electronic device, the third magnetic body 130 connected to the speaker module 2 can be conveniently pushed into the installation space formed by the support member 4 and the inner wall 3 of the electronic device from the side, and the third magnetic body 130 correspondingly falls into the magnetic trap formed by the first magnetic body 110 and the second magnetic body 120.

[0105] Please refer to Figures 2 - 4 , preferably, it further includes a limiting member 6 connected to the inner wall 3 of the electronic device, and the limiting member 6 is used to enclose the speaker module 2 and limit the speaker module 2.

[0106] When some electronic products do not have a power supply themselves, or for the purpose of saving electricity, and the battery runs out after a long time of power-off, in order to ensure that the speaker module 2 does not deviate after the power supply to the electromagnet is stopped, and the speaker module 2 can continue to float normally after being powered on, and the floating part of the speaker module 2 still falls within the designed range. By providing a hardware limiting member 6 on the inner wall 3 of the electronic device, even if the electromagnet is not continuously powered, the speaker module 2 is under the fence of the limiting member 6, and the position of the speaker module 2 is maintained within a certain range to prevent the speaker module 2 from deviating.

[0107] The limiting member 6 can be provided with a structure of a vertical plate or a column on the lower housing 310 and / or the upper cover 320, with a certain distance from the side walls around the speaker module 2, playing a role in limiting the speaker module 2. After the electromagnet is powered off, the speaker module 2 falls inside this limiting system to ensure that it can continue to float at a preset position and can float normally after being powered on later.

[0108] When the electronic device is provided with the support member 4, the support member 4 can also act as the limiting member 6 to a certain extent and cooperate with the limiting member 6 to limit the speaker module 2.

Claims

1. A magnetic levitation vibration isolation method, which is applied to a magnetic levitation vibration isolation device, and is characterized in that, The magnetic levitation vibration isolation device includes a magnetic levitation system and a speaker module; the repulsive force generated by the energized electromagnet in the magnetic levitation system suspends the speaker module; the magnetic levitation vibration isolation method includes the following steps: Adjust the magnitude of the direct current supplied to the electromagnet according to the frequency and amplitude of the working audio signal of the speaker module; When the frequency and amplitude of the input signal cause the speaker to vibrate greatly, reduce the direct current supplied to the electromagnet, and control the magnetic force of the electromagnet to keep the speaker module suspended; When the frequency and amplitude of the input signal cause the speaker to vibrate slightly, increase the direct current supplied to the electromagnet, and control the electromagnet to output a strong magnetic force to suspend the speaker module; When the speaker is on standby, supply a small direct current to the electromagnet, and control the magnetic force of the electromagnet to keep the speaker module suspended; the small current refers to the current that can only make the magnetic force and repulsive force generated by the electromagnet overcome the gravity of the speaker module and ensure that the speaker module does not deviate.

2. A magnetic levitation vibration isolation device, which is characterized in that, It includes a magnetic levitation system and a speaker module, and the magnetic levitation system applies the magnetic levitation vibration isolation method described in claim 1 to keep the speaker module suspended.

3. The magnetic levitation vibration isolation device according to claim 2, and is characterized in that, The magnetic levitation system includes a first magnetic body, a second magnetic body, and a third magnetic body; the magnetization directions of the first magnetic body and the second magnetic body are the same; the third magnetic body is located between the first magnetic body and the second magnetic body, and there is a suspension activity area between the third magnetic body and the first magnetic body and the second magnetic body; the magnetization direction of the third magnetic body is opposite to the magnetization directions of the first magnetic body and the second magnetic body; the speaker module is provided with a connecting portion connected to the third magnetic body.

4. The magnetic levitation vibration isolation device according to claim 3, and is characterized in that, The first magnetic body, the second magnetic body, and the third magnetic body are all permanent magnets.

5. The magnetic levitation vibration isolation device according to claim 3, and is characterized in that, The first magnetic body and / or the second magnetic body and / or the third magnetic body is an electromagnet.

6. The magnetic levitation vibration isolation device according to claim 2, and is characterized in that, The magnetic levitation system is in multiple groups and is arranged along the edge of the speaker module.

7. An electronic device, which is characterized in that, It includes the magnetic levitation system and the speaker module described in claim 2; the magnetic levitation system and the speaker module are arranged inside the electronic device, and the magnetic levitation system isolates the speaker module from contacting the inner wall of the electronic device.

8. An electronic device, which is characterized in that, It includes the magnetic levitation system and the speaker module described in any one of claims 3-5; the magnetic levitation system and the speaker module are arranged inside the electronic device, and the magnetic levitation system isolates the speaker module from contacting the inner wall of the electronic device.

9. The electronic device according to claim 8, and is characterized in that, The electronic device includes a closable lower housing and an upper cover; the first magnetic body and the second magnetic body are respectively installed on the inner walls of the lower housing and the upper cover.

10. The electronic device according to claim 8, and is characterized in that, It includes a support member connected to the inner wall of the electronic device, the first magnetic body is installed on the inner wall of the electronic device; the second magnetic body is installed on the support member.

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