CN115361640A - Magnetic suspension type vibration isolation method and device and electronic equipment - Google Patents

Abstract

The invention discloses a magnetic suspension type vibration isolation method, a vibration isolation device and electronic equipment, wherein the magnetic suspension type vibration isolation method is applied to the magnetic suspension type vibration isolation device, and the magnetic suspension type vibration isolation device comprises a magnetic suspension system and a loudspeaker module; the magnetic suspension type vibration isolation method comprises the following steps: according to the frequency and amplitude of the working audio signal of the loudspeaker module, the direct current for supplying power to the electromagnet is adjusted; when the frequency and amplitude of the input signal enable the loudspeaker to vibrate greatly, the direct current for supplying power to the electromagnet is reduced, and the magnetic force of the electromagnet is controlled to keep the loudspeaker module suspended; when the frequency and amplitude of the input signal enable the loudspeaker to vibrate relatively small, the direct current for supplying power to the electromagnet is increased, and the electromagnet is controlled to output strong magnetic force to suspend the loudspeaker module. A magnetic suspension type vibration isolation device comprises a magnetic suspension system and a loudspeaker module, wherein the magnetic suspension system is used for keeping the loudspeaker module in suspension.

Description

Magnetic suspension type vibration isolation method and device and electronic equipment

Technical Field

The application relates to the technical field of loudspeaker devices, in particular to a magnetic suspension type vibration isolation method, a vibration isolation device and electronic equipment.

Background

The embedded loudspeaker is widely applied to mobile equipment and household appliances. With the development of the technology, the requirements of users on the sound playing tone quality of the products are also improved, and especially higher requirements on the aspects of bandwidth, distortion and the like of a loudspeaker system are provided, and even special sound products are used as standard products. Unlike audio products, in these products using embedded speakers, the sound playing is only a part of the functions, and in addition, it needs to be compatible with other functions, and these functions may conflict with the playing of the speakers in actual design.

For example, a notebook computer, a television and a projector are internally provided with a loudspeaker, so that audio output is facilitated, when the loudspeaker is used for sound output, the loudspeaker is generated by vibration of an electromagnetic coil and a vibrating diaphragm, the vibration of the vibrating diaphragm is transmitted to the air, and sound waves drive the air to vibrate, so that a user can hear audio output by the loudspeaker; thus seriously affecting the user experience.

In the prior art, in order to avoid the phenomenon, a vibration isolation gasket 5 as shown in fig. 20 and 21 is adopted and applied to a connection fixing point of a loudspeaker installed in a cabinet or a shell of an electronic product to achieve isolation; the vibration isolation gasket 5 is generally made of a solid rubber material, and by utilizing the characteristics of the material and depending on the material characteristics of the vibration isolation gasket 5, absorption and attenuation are achieved, so that the purpose of preventing the loudspeaker from driving the inner wall, the shell and other parts of the electronic equipment to vibrate is achieved, but the vibration isolation effect of the vibration isolation gasket 5 is limited. The problem of vibration cannot be completely solved, so that the problem caused by vibration still exists in equipment using the embedded loudspeaker, and in order to eliminate the problem, the output of the embedded loudspeaker in partial frequency bands is reduced, and the playing tone quality is reduced.

Disclosure of Invention

The invention mainly aims at the problems, provides a magnetic suspension type vibration isolation method, a vibration isolation device and electronic equipment, and aims to solve the technical problems in the background art.

In order to achieve the purpose, the invention provides a magnetic suspension type vibration isolation method which is applied to a magnetic suspension type vibration isolation device, wherein the magnetic suspension type vibration isolation device comprises a magnetic suspension system and a loudspeaker module; the repulsion force generated by electrifying the electromagnet in the magnetic suspension system enables the loudspeaker module to suspend; the magnetic suspension type vibration isolation method comprises the following steps:

adjusting the magnitude of direct current for supplying power to the electromagnet according to the frequency and amplitude of the working audio signal of the loudspeaker module;

when the frequency and amplitude of an input signal enable the loudspeaker to vibrate greatly, reducing direct current for supplying power to the electromagnet, and controlling the magnetic force of the electromagnet to keep the loudspeaker module suspended;

when the frequency and the amplitude of the input signal enable the loudspeaker to vibrate relatively small, the direct current for supplying power to the electromagnet is increased, and the electromagnet is controlled to output strong magnetic force to suspend the loudspeaker module.

Further, when the loudspeaker is in a standby state, the electromagnet is controlled to be in magnetic force to keep the loudspeaker module suspended by the aid of low-current direct current supplied to the electromagnet.

A magnetic suspension type vibration isolation device comprises a magnetic suspension system and a loudspeaker module, wherein the magnetic suspension system is used for keeping the loudspeaker module suspended.

Further, the magnetic suspension system comprises 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 positioned between the first magnetic body and the second magnetic body, and a suspension active area is arranged between the third magnetic body and the first magnetic body as well as between the third 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 loudspeaker module is provided with a connecting part connected with the third magnetic body.

Furthermore, the first magnetic body, the second magnetic body and the third magnetic body are all permanent magnets.

Further, the first magnetic body and/or the second magnetic body and/or the third magnetic body are electromagnets.

An electronic device comprises the magnetic suspension system and a loudspeaker module; the magnetic suspension system and the loudspeaker module are arranged in the inner cavity of the electronic equipment, and the magnetic suspension system isolates the loudspeaker module from contacting with the inner wall of the electronic equipment.

Further, the electronic equipment comprises a lower shell and an upper cover which can be covered; the first magnetic body and the second magnetic body are respectively arranged on the inner walls of the lower shell and the upper cover.

Further, the electronic equipment comprises a support connected with the inner wall of the electronic equipment, and the first magnetic body is mounted on the inner wall of the electronic equipment; the second magnetic body is mounted to the support.

Compared with the prior art, the magnetic suspension type vibration isolation method, the vibration isolation device and the electronic equipment provided by the invention have the advantages that the loudspeaker module can be suspended through the magnetic suspension system, the loudspeaker module is elevated, the original surface contact, line contact or point contact which directly connects the loudspeaker module with the inner wall inside the electronic product or connects the loudspeaker module with the inside of the electronic product through the traditional vibration isolation gasket is adjusted to be that the loudspeaker module is not contacted any more, and therefore, when the loudspeaker module is in work and generates sound and vibrates, the vibration of the loudspeaker module is greatly prevented from being transmitted to the box body or the shell of the electronic product and other parts adjacent to the loudspeaker module, and the unexpected vibration of a user is avoided.

Drawings

Fig. 1 is a schematic side view of a first embodiment, a fourth embodiment, and a seventeenth embodiment of the present application.

Fig. 2 is an exploded view of the first, fourth, and seventeenth embodiments of the present application.

Fig. 3 is a schematic structural diagram of an eighteen embodiment of the present application.

Fig. 4 is an exploded view of a structure of a fourth embodiment and an eighteen embodiment of the present application.

Fig. 5 is an exploded view of the seventeenth structure of the first, fifth and seventeenth embodiments of the present application.

Fig. 6 is a schematic structural diagram of a second embodiment, a third embodiment and a seventeenth embodiment of the present application.

Fig. 7 is an exploded view of the seventeenth structure in the second, third and seventh embodiments of the present application.

Fig. 8 is a schematic structural diagram of a second embodiment, a third embodiment and an eighteen embodiment of the present application.

Fig. 9 is a schematic diagram of a third structure according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of the fourth embodiment of the present application.

Fig. 11 is a schematic cross-sectional view of an embodiment of the present application.

Fig. 12 is a schematic diagram of a sixth structure according to an embodiment of the present application.

Fig. 13 is a schematic structural diagram of an embodiment of the present application.

Fig. 14 is an eighth structural diagram of the present application.

Fig. 15 is a schematic structural diagram of a ninth embodiment of the present application.

Fig. 16 is a schematic structural diagram of an embodiment of the present application.

Fig. 17 is a schematic structural diagram of an eleventh embodiment of the present application.

Fig. 18 is a schematic view of a twelve-structure embodiment of the present application.

Fig. 19 is a schematic structural diagram of a thirteenth embodiment of the present application.

Fig. 20 is a structural view of a prior art vibration isolation gasket.

Fig. 21 is an exploded view of a speaker module connected to an inner wall of an electronic product or a side wall of a housing through a vibration isolation gasket in the prior art.

Reference numerals shown in the drawings: 1. a magnetic suspension system; 110. a first magnetic body; 120. a second magnetic body; 130. a third magnetic body; 140. a suspended active region; 2. a speaker module; 201. a speaker unit; 202. a speaker module housing; 210. a connecting portion; 3. an inner wall of the electronic device; 310. a lower housing; 320. an upper cover; 330. a clamping groove; 4. a support member; 5. a vibration isolation gasket; 6. and a limiting member.

Detailed Description

The embodiment provides a magnetic suspension type vibration isolation method, which is applied to a magnetic suspension type vibration isolation device, wherein the magnetic suspension type vibration isolation device comprises a magnetic suspension system and a loudspeaker module; the repulsion force generated by electrifying the electromagnet in the magnetic suspension system enables the loudspeaker module to suspend; the magnetic suspension type vibration isolation method comprises the following steps:

adjusting the magnitude of direct current for supplying power to the electromagnet according to the frequency and amplitude of the working audio signal of the loudspeaker module;

when the vibration transmission of the loudspeaker is large, the direct current for supplying power to the electromagnet is reduced, the compliance of a suspension system is increased, and the vibration transmission is reduced;

when the loudspeaker vibration transmission is less, the direct current to the electro-magnet power supply is increased, and the compliance of suspension system is reduced, so that the suspension system has enough supporting force, and the efficiency of loudspeaker module outwards radiating sound is maximized.

The loudspeaker works to vibrate, the emitted energy is transmitted by waves, and the propagation characteristic of the waves is that a front mass point drives a rear mass point to vibrate in the medium in sequence along the propagation direction of the waves; forming energy waves which are diffused towards the periphery of the loudspeaker by taking the loudspeaker as a wave source; when the wave is transmitted to such a medium in the air, it becomes a sound wave of a sound that the human ear can hear; when waves are transmitted to solid media such as a cabinet, a shell and other electronic components which are connected with the loudspeaker in a mounting way, mechanical vibration, shaking and noise which are not expected by a user can affect the using experience of the user.

This magnetic levitation formula vibration isolation method makes the speaker module suspend through the repulsion that the electro-magnet circular telegram in the magnetic levitation system produced, raise the speaker, will originally directly with the speaker with the inside inner wall connection of electronic product or through traditional vibration isolation packing ring 5 with the electronic product internal connection's face contact adjustment for the speaker no longer contacts, like this at speaker work sound production, when vibration, break through the restriction that 5 compliance of the vibration isolation packing ring of current design completely rely on material physical properties, the transmission of speaker vibration to electronic product box or casing has greatly been avoided, other parts of neighbouring speaker, avoid arousing the unexpected vibration of user.

Because the loudspeaker vibrates to generate power when playing audio, when weak magnetic force generated by electrifying the electromagnet of the magnetic suspension system causes the repulsive force of magnetic pieces of the magnetic suspension system to be smaller, namely the loudspeaker module group vibrates due to the sounding of the loudspeaker, so that the loudspeaker module group is lifted by the magnetic suspension system and is easier to move, the compliance of the magnetic suspension system is large, the resonance frequency of the system is small, the vibration can be effectively prevented from being spread outwards through a counterforce, the amplitude of the module group is large, and the phenomenon is generated when the current electrifying the electromagnet is proper small current;

when the suspension system compliance is little, the electro-magnet of magnetic suspension system lets in the heavy current promptly, produces powerful magnetic field, promotes to lift rigidity to the speaker module, when making the speaker module be difficult to remove, and the vibration isolation performance to the speaker module is relatively poor under this kind of condition, but speaker broadcast efficiency is higher. Therefore, the invention correspondingly adjusts the value of the direct current value electrified to the electromagnet in the magnetic suspension system in real time according to the frequency and the amplitude of the audio signal aiming at audio playing, reduces the direct current supplied to the electromagnet when the loudspeaker vibrates greatly, controls the magnetic force of the electromagnet to keep the loudspeaker module suspended, increases the direct current supplied to the electromagnet when the loudspeaker vibrates less, and controls the electromagnet to output strong magnetic force to suspend the loudspeaker module, namely, controls the compliance of the suspension system, so as to achieve the optimized audio playing effect.

Further, when the loudspeaker is in standby, the small current direct current which supplies power to the electromagnet controls the magnetic force of the electromagnet to keep the loudspeaker module suspended.

When the loudspeaker is in standby, the loudspeaker module is kept in a suspension state, otherwise, the electromagnet is powered off, and when the electromagnet and the permanent magnet are arranged in the magnetic suspension system, the permanent magnet can adsorb the loudspeaker module to any side; when the magnetic suspension systems are all electromagnets, the loudspeaker module falls down along the gravity or external force direction under the action of gravity and is not suspended again;

therefore, the magnetic suspension system is deviated, and when the magnetic suspension system is electrified again, the permanent magnet or the electromagnet in the magnetic suspension system cannot fall into the magnetic field trap, so that the loudspeaker module cannot be suspended successfully, or the loudspeaker module is deviated in suspension, and the vibration isolation function is influenced;

when the loudspeaker is in standby power-off, the electromagnet in the magnetic suspension system is still continuously electrified, the electrified direct current is small enough to enable the magnetic force and the repulsive force generated by the electromagnet to overcome the gravity of the loudspeaker module, the loudspeaker module is not deviated, the suspension part of the loudspeaker module still falls within the design range, and when the loudspeaker module needs to output audio to work, the loudspeaker module can continue to suspend normally after being electrified.

Because the speaker module of different specifications can have different weight, receives different gravity, consequently the electric current size that leads to in the magnetic suspension system and obtains the electro-magnet needs to be confirmed through the check calculation, makes the magnetic force and the repulsion that the electro-magnet produced can overcome speaker module gravity to guarantee the current minimum of speaker module off normal.

Referring to fig. 2 to 19, the present invention provides a magnetic suspension type vibration isolation device, including a magnetic suspension system 1 and a speaker module 2, where the magnetic suspension system 1 is used to keep the speaker module 2 suspended.

This magnetic levitation formula vibration isolation device makes speaker module 2 suspend through magnetic levitation system 1, it rises speaker module 2, will originally directly with speaker module 2 and the inside inner wall connection of electronic product or adjust for speaker module 2 no longer contacts through traditional vibration isolation packing ring 5 and electronic product internal connection's face contact, like this at speaker module 2 work sound production, when vibration takes place, break through the restriction that 5 compliance complete dependence material physical properties of vibration isolation packing ring of current design, greatly avoided the transmission of speaker module 2 vibration to electronic product box or casing, neighbouring speaker module 2 other parts, avoid arousing the unexpected vibration of user.

Referring to fig. 2 to 19, 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 a floating active region 140 is located between the third magnetic body 130 and the first magnetic body 110 and the second magnetic body 120; the third magnetic body 130 has a magnetization direction opposite to the magnetization directions of the first and second magnetic bodies 110 and 120; the speaker module 2 is provided with a connecting portion 210 connected to the third magnetic member 130.

With this arrangement, the first magnetic body 110 and the second magnetic body 120 generate magnetic force to the third magnetic body 130 to form a magnetic trap, so that the third magnetic body 130 can be floated by the first magnetic body 110 and the second magnetic body 120 and can move when receiving an internal force of vibration of the speaker module 2 in the floating active region 140, and the speaker module 2 passing through the connecting portion 210 and the third magnetic body 130 can also be floated by the magnetic trap and the third magnetic body 130.

The speaker module 2 comprises a speaker unit 201 and a speaker module housing 202 for mounting the speaker unit 201;

referring to fig. 1, 3 and 5, the first embodiment

The connecting portion 210 is a connecting groove disposed on the end surface of the speaker module housing 202, and the third magnetic body 130 is embedded in the connecting groove and integrally connected to the speaker module 2.

Referring to FIGS. 6-8, the second embodiment

The connecting portion 210 is a connecting arm disposed at the outer edge of the speaker module housing 202, the connecting arm is provided with a connecting groove, and the third magnetic body 130 is embedded in the connecting groove and connected with the speaker module 2.

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

Please refer to fig. 6-9, the third embodiment

The first magnetic body 110 and the second magnetic body 120 of the set of magnetic levitation system 1 are in a circular ring structure, and the third magnetic body 130 is in a cylindrical plate structure and is located between the first magnetic body 110 and the second magnetic body 120.

Please refer to fig. 1, fig. 2, fig. 4 and fig. 10, in a fourth embodiment

The first magnetic body 110 and the second magnetic body 120 of the magnetic levitation system 1 are circular ring structures, and the third magnetic body 130 is a cylindrical structure and is located between the first magnetic body 110 and the second magnetic body 120.

Referring to FIG. 5 and FIG. 11, the fifth embodiment

The first magnetic body 110 and the second magnetic body 120 of the magnetic levitation system 1 are in a ring structure, the third magnetic body 130 is two cylindrical pieces, and the two cylindrical pieces are arranged in the connecting groove of the speaker module housing 202 at intervals, so that the third magnetic body 130 in the fourth embodiment is saved in material consumption, the weight is reduced, and the cost is saved when the speaker module 2 is thick.

Please refer to fig. 12, example six

The first magnetic body 110 and the second magnetic body 120 of a set of magnetic levitation system 1 are three circular arc magnetic segments with intervals to form a circular ring structure, and the third magnetic body 130 is a cylindrical sheet structure and is positioned between the first magnetic body 110 and the second magnetic body 120; the design reduces the materials of the first magnetic body 110 and the second magnetic body 120, saves the cost, and simultaneously can ensure the magnetic suspension effect of the magnetic suspension system 1 on the loudspeaker module 2.

Please refer to fig. 13, a seventh embodiment

The first magnetic body 110 and the second magnetic body 120 of a set of magnetic levitation system 1 are all four arc-shaped magnetic segments with intervals to form a circular ring structure, and the third magnetic body 130 is a cylindrical sheet structure and is located between the first magnetic body 110 and the second magnetic body 120; the design reduces the materials of the first magnetic body 110 and the second magnetic body 120, saves the cost, and simultaneously can ensure the magnetic suspension effect of the magnetic suspension system 1 on the loudspeaker module 2.

Please refer to fig. 14, example eight

The first magnetic body 110 and the second magnetic body 120 of the magnetic levitation system 1 are both square magnetic sheet structures having 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.

Please refer to fig. 15, example nine

The first magnetic member 110 and the second magnetic member 120 of the magnetic levitation system 1 are square magnetic sheet structures having circular inner holes, and the third magnetic member 130 (not shown) is located between the first magnetic member 110 and the second magnetic member 120.

Please refer to fig. 16, a tenth embodiment

The first magnetic body 110 and the second magnetic body 120 of the magnetic levitation system 1 are both cylindrical magnetic sheet structures having 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.

Please refer to fig. 17, an eleventh embodiment

In a group of magnetic levitation systems 1, the first magnetic body 110 and the second magnetic body 120 are four square magnetic sheets distributed, and the third magnetic body 130 is a cylindrical sheet structure and is located between the first magnetic body 110 and the second magnetic body 120; preferably, the four square magnetic pieces of the first magnetic body 110 and the second magnetic body 120 are uniformly arranged along the axial direction of the third magnetic body 130.

Please refer to fig. 18, a twelfth embodiment

In a group of magnetic levitation systems 1, the first magnetic body 110 and the second magnetic body 120 are three cylindrical magnetic sheets arranged in a distributed manner, and the third magnetic body 130 is a cylindrical sheet structure and is located between the first magnetic body 110 and the second magnetic body 120; preferably, the three cylindrical magnetic pieces of the first magnetic body 110 and the second magnetic body 120 are uniformly arranged along the axial direction of the third magnetic body 130.

Please refer to fig. 19, a thirteenth embodiment

In the set of magnetic levitation system 1, the first magnetic body 110 and the second magnetic body 120 are three square magnetic sheets distributed, 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 pieces of the first magnetic body 110 and the second magnetic body 120 are uniformly arranged along the axial direction of the third magnetic body 130.

In some embodiments, the first magnetic body 110, the second magnetic body 120, and/or the third magnetic body 130 are electromagnets (not shown).

Example fourteen

The first magnetic member 110 and the second magnetic member 120 are electromagnets, and the third magnetic member 130 is a permanent magnet.

Example fifteen

The third magnetic member 130 is an electromagnet, and the first and second magnetic members 110 and 120 are permanent magnets.

Example sixteen

The first magnetic member 110, the second magnetic member 120, and the third magnetic member 130 are all electromagnets.

Referring to fig. 1 to 19, the present embodiment provides an electronic apparatus, including the magnetic levitation system 1 and the speaker module 2; the magnetic suspension system 1 and the loudspeaker module 2 are arranged in the inner cavity of the electronic equipment, and the magnetic suspension system 1 isolates the loudspeaker module 2 from contacting with the inner wall 3 of the electronic equipment.

An electronic device inner wall 3, i.e., a panel case of the electronic device; in order to facilitate observing the structure of the connection between the inner wall 3 of the electronic device and the speaker module 2 in the inner cavity of the electronic product through the magnetic suspension system 1, the inner wall 3 of the electronic device shown in fig. 1-8 is a partial side wall of the electronic product.

In the embedded loudspeaker sound box structure, the magnetic suspension system 1 is utilized to form a suspension system at the position where the loudspeaker module 2 is connected and fixed with the inner wall 3 of the electronic equipment, so that the propagation of the sounding vibration of the loudspeaker module 2 on a transmission link is greatly avoided, and the influence of the vibration of the loudspeaker module 2 on other components is relieved.

The electronic device comprises a lower shell 310 and an upper cover 320 which can be covered; the first and second magnetic members 110 and 120 are respectively mounted on the inner walls of the lower case 310 and the upper cover 320.

Please refer to fig. 1, fig. 2, and fig. 5-fig. 7, a seventeenth embodiment

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 can be fixed to each other in a glue joint manner, that is, after the upper cover 320 and the lower housing 310 are covered and assembled, a magnetic trap is formed, the third magnetic body 130 connecting the speaker module 2 and the speaker module 2 is pushed in from the side, the three magnetic bodies form a magnetic suspension system 1, and then the speaker module 2 is lifted and suspended.

The third magnetic member 130 connecting the speaker module 2 and the speaker module 2 may be placed on the second magnetic member 120 corresponding to the lower case 310 in advance, and the upper cover 320 may be placed on the speaker module 2 so that the first magnetic member 110 corresponds to the third magnetic member 130.

Preferably, the lower housing 310 and the upper cover 320 are both provided with a retaining groove 330, and the retaining groove 330 fastens and retains the first magnetic body 110 and the second magnetic body 120 on the one hand, and saves the space occupied by the first magnetic body 110 and the second magnetic body 120 on the other hand.

Please refer to fig. 3, 4 and 8, the eighteenth embodiment

The electronic device comprises a support 4 connected with an inner wall 3 of the electronic device, wherein the first magnetic body 110 is arranged on the inner wall 3 of the electronic device; the second magnetic body 120 is mounted to the support 4.

In the seventeenth embodiment, the first magnetic member 110 and the second magnetic member 120 are respectively mounted on the inner walls of the lower housing 310 and the upper cover 320, and when the magnetic levitation system 1 is formed by the third magnetic member 130 connected to the speaker module 2, the magnetic levitation system is mounted at a low power, so that the operation is not limited by a worker, and the third magnetic member 130, the first magnetic member 110 and the second magnetic member 120 are easy to be misaligned, and the operation is difficult to debug.

In this embodiment, by providing the supporting member 4, preferably, the supporting member 4 is vertically connected by two supporting plates, and a structure with an L-shaped side view projection is formed, one of the two supporting plates is perpendicular to the inner wall 3 of the electronic device, and the other supporting plate is parallel to the inner wall 3 of the electronic device, so that 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 supporting member 4 and the inner wall 3 of the electronic device, 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.

Referring to fig. 2 to 4, preferably, the electronic device further includes a limiting member 6 connected to the inner wall 3 of the electronic device, and the limiting member 6 is configured to surround the speaker module 2 and limit the speaker module 2.

When some electronic products do not set up the power itself, or for the purpose of saving power, and long-time outage battery power is exhausted, in order to stop after the power supply to the electro-magnet, guarantee that speaker module 2 does not deviate from the normal position, speaker module 2 can continue normal suspension after circular telegram, speaker module 2 suspension part still falls into the design range, through set up hardware locating part 6 at electronic equipment inner wall 3, even though not continuously supplying power to the electro-magnet, speaker module 2 is under the rail of locating part 6, speaker module 2 position keeps in certain extent, prevent speaker module 2 deviation.

The locating part 6 can be the structure setting of riser, stand on casing 310 and/or upper cover 320 down, with speaker module 2 lateral wall interval certain interval all around, play limiting displacement to speaker module 2, behind the electro-magnet outage, speaker module 2 falls inside this spacing system to can continue to suspend after guaranteeing follow-up circular telegram in preset position, can normally suspend.

When the electronic device is provided with the supporting member 4, the supporting member 4 can also act as the limiting member 6 to a certain extent, and is matched with the limiting member 6 to limit the speaker module 2.

Claims (10)

1. A magnetic suspension type vibration isolation method is applied to a magnetic suspension type vibration isolation device and is characterized in that the magnetic suspension type vibration isolation device comprises a magnetic suspension system and a loudspeaker module; the repulsion force generated by electrifying the electromagnet in the magnetic suspension system enables the loudspeaker module to suspend; the magnetic suspension type vibration isolation method comprises the following steps:

adjusting the magnitude of direct current for supplying power to the electromagnet according to the frequency and amplitude of the working audio signal of the loudspeaker module;

when the frequency and amplitude of an input signal enable the loudspeaker to vibrate greatly, reducing direct current for supplying power to the electromagnet, and controlling the magnetic force of the electromagnet to keep the loudspeaker module suspended;

when the frequency and the amplitude of the input signal enable the loudspeaker to vibrate less, the direct current for supplying power to the electromagnet is increased, and the electromagnet is controlled to output strong magnetic force to suspend the loudspeaker module.

2. The method as claimed in claim 1, wherein when the speaker is in a standby state, a small current dc power is supplied to the electromagnets to control the electromagnets to magnetically keep the speaker module suspended.

3. A magnetic suspension type vibration isolation device is characterized by comprising a magnetic suspension system and a loudspeaker module, wherein the magnetic suspension system is used for keeping the loudspeaker module suspended.

4. The magnetic levitation vibration isolating device as recited in claim 3, wherein the magnetic levitation system comprises a first magnetic body, a second magnetic body, 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 positioned between the first magnetic body and the second magnetic body, and a suspension active area is arranged between the third magnetic body and the first magnetic body as well as between the third 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 loudspeaker module is provided with a connecting part connected with the third magnetic body.

5. The magnetic suspension type vibration isolating device according to claim 4, wherein the first magnetic body, the second magnetic body, and the third magnetic body are all permanent magnets.

6. The magnetic levitation vibration isolation device according to claim 4, wherein the first magnetic body and/or the second magnetic body and/or the third magnetic body is an electromagnet.

7. The magnetic levitation vibration isolation device as claimed in claim 3, wherein the magnetic levitation systems are provided in multiple groups along the edge of the speaker module.

8. An electronic device, comprising the magnetic levitation system and the speaker module of any one of claims 3 to 7; the magnetic suspension system and the loudspeaker module are arranged in the inner cavity of the electronic equipment, and the magnetic suspension system isolates the loudspeaker module from contacting with the inner wall of the electronic equipment.

9. The electronic device of claim 8, wherein the electronic device comprises a lower housing and an upper cover which can be closed; the first magnetic body and the second magnetic body are respectively arranged on the inner walls of the lower shell and the upper cover.

10. The electronic device according to claim 8, comprising a support member connected to an inner wall of the electronic device, wherein the first magnetic body is mounted to the inner wall of the electronic device; the second magnetic body is mounted to the support.

Images