WO2020135282A1

WO2020135282A1 - Electronic device

Info

Publication number: WO2020135282A1
Application number: PCT/CN2019/127239
Authority: WO
Inventors: 祖峰磊; 杨鑫峰; 刘春发
Original assignee: 歌尔股份有限公司
Priority date: 2018-12-29
Filing date: 2019-12-21
Publication date: 2020-07-02
Also published as: CN111385691A

Abstract

Disclosed is an electronic device. The electronic device comprises an electromagnetic exciter, a first load element, and a second load element, wherein the electromagnetic exciter comprises a housing, a magnetically conductive vibrator, a coil, and a first permanent magnet; a cavity is formed inside the housing; the permanent magnet, the coil and the magnetically conductive vibrator are located in the cavity; the first load element and the second load element are located outside the cavity; the magnetically conductive vibrator comprises a fixing end and a suspended portion, which are connected to each other; the fixing end is fixed to the housing; part of the suspended portion is opposite the first permanent magnet, and is spaced apart from same; the suspended portion comprises a connection portion; the housing is provided with a through hole, and the connection portion extends out of the through hole; and the connection portion is used for connecting to the first load element or the second load element. The electronic device further comprises a switching apparatus for causing the connection portion to switch between the first load element and the second load element. The coil generates, in response to an alternating signal of an external circuit, an alternating magnetic field. The first permanent magnet is configured to interact with the suspended portion. The magnetically conductive vibrator drives the first load element or the second load element to vibrate.

Description

An electronic device

Technical field

The present invention relates to the technical field of electromagnetic vibration, and more particularly, to an electronic device.

Background technique

An electromagnetic exciter is a device that uses electromagnetic transduction to output force. The driving direction of the electromagnetic actuator is single, that is, it can only output the force in one direction. In one solution, a double-sided receiver is provided. In this application, the receiver includes: a driving mechanism, a first diaphragm, a first housing, a second diaphragm, and a second housing. The first diaphragm is located at one end of the driving mechanism, and the driving mechanism is used to drive the first diaphragm to vibrate and sound; the central hole of the first housing can pass through the driving mechanism, and the first diaphragm The open end is hermetically connected to the first housing; the second diaphragm is located at the other end of the driving mechanism, and the driving mechanism is also used to drive the second diaphragm to vibrate and sound; the central hole of the second housing is available for all The driving mechanism passes through, and the open end of the second diaphragm is sealingly connected to the second housing.

In the actual working process of the receiver, the driving mechanism can drive the first diaphragm to vibrate and sound. At this time, the sound generated by the vibration of the first diaphragm can be exported to the outside of the mobile terminal through the sound guide hole on the first sound output cover In this way, the mobile terminal can achieve positive voice. Similarly, the driving mechanism can also drive the second diaphragm to vibrate and sound. At this time, the sound generated by the vibration of the second diaphragm can be exported to the outside of the mobile terminal through the sound guide hole on the second sound output cover. The terminal can realize the reverse voice. It can be seen that the mobile terminal can realize double-sided sound.

However, in this type of receiver, two receiver monomers that emit sound in a single direction are placed opposite to each other and connected together, and each receiver monomer is a moving coil receiver. Although double-sided sound can be achieved, since it is a simple superposition of two receivers, the overall thickness of the receiver inevitably increases.

In addition, the structure of the receiver is complicated, and the assembly is difficult.

In addition, the receiver unit is a moving coil receiver, and the magnetic field utilization rate is not high.

Therefore, a new technical solution needs to be provided to solve the above technical problems.

Summary of the invention

An object of the present invention is to provide a new technical solution for electronic equipment.

According to a first aspect of the invention, an electronic device is provided. The electronic device includes an electromagnetic exciter, a first load element, and a second load element. The electromagnetic exciter includes a housing, a magnetic vibrator, a coil, and a first permanent magnet. A cavity is formed inside the housing. The permanent magnet, the coil and the magneto-vibrator are located inside the cavity, the first load element and the second load element are located outside the cavity, the magneto-vibrator includes a fixed end and a suspended portion connected to each other, The fixed end is fixed on the housing, a part of the suspended portion is opposed to and spaced from the first permanent magnet, the suspended portion includes a connecting portion, the housing has a through hole, and the connecting portion The through hole extends, and the connecting portion is used to connect with the first load element or the second load element, and further includes a connecting portion between the first load element and the second load element In a conversion device that performs conversion, the coil generates an alternating magnetic field in response to an alternating signal from an external circuit, the magnetic permeator is magnetized by the magnetic field, and the first permanent magnet is configured to Interact with each other to drive the vibrator to vibrate, and the vibrator drives the first load element or the second load element to vibrate.

Optionally, the first load element and the second load element are respectively located on both sides of the magnetic vibrator in the vibration direction.

Optionally, the magnetic vibrator has a T-shaped structure, and the T-shaped structure includes a first side and a second side connected to one end of the first side, and the other end of the first side is the fixed At the end, the connecting portion includes the second side, and two ends of the second side respectively correspond to the first load element and the second load element.

Optionally, the conversion device includes two second permanent magnets respectively provided on the first load element and the second load element, and two of the second permanent magnets on the side facing the connecting portion The polarities are opposite. After the connection part is magnetized, one of the second permanent magnets is attracted to the connection part.

Optionally, an instantaneous high current is passed through the coil to magnetize the connection part, and the magnitude of the instantaneous high current is greater than the magnitude of the alternating signal.

Optionally, a buffer element is provided between the second permanent magnet and the first load element and/or between the second permanent magnet and the second load element.

Optionally, the coil is sheathed outside the suspended portion, and a magnetic fluid is provided between the coil and the magnetic vibrator and/or between the first permanent magnet and the magnetic vibrator.

Optionally, the shell includes a first shell and a second shell, and the fixed end is clamped and fixed between shell walls of the first shell and the second shell.

Optionally, the first load element is an LED screen, an LCD screen or an OLED screen; the second load element is an LED screen, an LCD screen or an OLED screen.

Optionally, the first permanent magnet includes a first magnet and a second magnet that are oppositely arranged on both sides of the magnetic vibrator in the vibration direction.

According to an embodiment of the present disclosure, the electronic device is provided with a first load element and a second load element. The conversion device can switch the connection relationship between the magnetic vibrator and the first load element or the second load element. In the above manner, it is possible to switch different load elements in different application scenarios, thereby providing different vibration directions, vibration modes, and vibration sensing experience.

In addition, the electromagnetic exciter uses a magnetically permeable cantilever structure. Under the action of excitation at different frequencies, the permeable vibrator will exhibit different vibration modes. Vibration modes at different frequencies increase the vibration amplitude of the magneto-vibrator in this frequency interval, thereby broadening the frequency band of electronic equipment.

In addition, the electronic device uses a set of electromagnetic actuators to drive two load elements. The thickness of the electronic device can be made smaller, which conforms to the development trend of miniaturization and thinning of electronic devices.

In addition, the electronic device has a simple structure and is difficult to assemble.

Other features and advantages of the present invention will become clear by the following detailed description of exemplary embodiments of the present invention with reference to the drawings.

BRIEF DESCRIPTION

The drawings incorporated in and forming a part of the specification illustrate embodiments of the invention, and together with the description thereof, serve to explain the principles of the invention.

FIG. 1 is an exploded view of an electronic device according to an embodiment of the present disclosure.

2 is a cross-sectional view of an electronic device according to an embodiment of the present disclosure.

Description of reference signs:

11: first housing; 12; second housing; 13: first magnet; 14: second magnet; 16: coil; 17: fixing portion; 18: rubber pad; 19: shielding sheet; 21: first screen; 22 : Second screen; 23: Third magnet; 24: Fourth magnet; 25: Permeator; 27: Second side; 28: FPCB; 29: Through hole.

detailed description

Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is actually merely illustrative, and in no way serves as any limitation on the invention and its application or use.

Techniques, methods and equipment known to those of ordinary skill in the related art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the specification.

In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiment may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, there is no need to discuss it further in subsequent drawings.

According to an embodiment of the present disclosure, an electronic device is provided. The electronic device may be, but not limited to, a mobile phone, a tablet computer, a smart watch, a notebook computer, a game machine, a walkie-talkie, a headset, a hearing aid, etc.

The electronic device includes an electromagnetic actuator, a first load element, and a second load element. As shown in FIGS. 1-2, the electromagnetic exciter includes a housing, a magnetically permeable vibrator 25, a coil 16, a first permanent magnet, a first load element (for example, the first screen 21), and a second load element (for example, the first Two screen 22). The interior of the housing forms a cavity. A part of the housing serves as the fixed portion 17. The magnetic permeator 25, the coil 16, and the first permanent magnet are provided in the cavity. For example, the housing includes a first housing 11 and a second housing 12 that are snapped together. A cavity is formed inside the two casings 11,12. For example, the entire housing is square. The first housing 11 forms a cavity with an open end. The second housing 12 is closed at the open end. The material of the shell is metal, plastic, ceramic, glass, etc.

For example, the first housing 11 and the second housing 12 are made of magnetically conductive materials. The magnetically conductive material may be, but not limited to, ferrite material, tungsten steel, SPCC, or the like. The above materials have good magnetic permeability. Since the thickness of the first permanent magnet is usually small. The magnetization direction is along the thickness direction. In this way, the two magnetic poles easily form a magnetic short circuit. The first permanent magnet is provided on the first housing 11 or the second housing 12. Since the two housings 11 and 12 have magnetic permeability properties, it can effectively avoid the occurrence of magnetic short circuit and significantly improve the magnetic properties of the magnetic field formed by the first permanent magnet.

The magnetic vibrator 25 includes a fixed end and a suspended portion connected to each other. The magnetically permeable oscillator 25 is made of a magnetically permeable material. The magnetically conductive material is as described above. For example, the entire magnetic vibrator 25 has a bar structure, a sheet structure, or other structures.

The fixed end is fixed to the fixed portion 17. The fixing portion 17 may also be a component of the device where the electronic merger is located, such as a frame, an inner wall, etc.; or the fixing end may be clamped and fixed on the shell wall of the housing. The portion of the shell wall for fixing the fixed end is the fixing portion 17. The hanging part is suspended in the cavity to form a cantilever beam structure. For example, as shown in FIGS. 1-2, the fixed end is fixed between the first housing 11 and the second housing 12. It is fixed by bonding, welding and clamping. This makes it possible to firmly fix the magnetic vibrator 25.

It may also be that the fixed end is relatively fixed to the housing by other components. For example, the fixed end is clamped and fixed in the coil 16. The coil 16 is fixed to the case with an adhesive or the like.

The suspended portion is opposed to and spaced from the first permanent magnet to form a vibration space. The coil 16 is sheathed outside the suspended portion. The coil 16 generates an alternating magnetic field in response to an alternating signal of an external circuit, and the magnetic permeator 25 is magnetized by the magnetic field. The first permanent magnet is configured to interact with the suspended portion to drive the magnetic vibrator 25 to vibrate, and the magnetic vibrator 25 drives the first load element or the second load element to vibrate.

The housing has a through hole 29. For example, a through hole 29 is provided on the side of the case opposite to the fixed portion 17. The connecting portion protrudes from the through hole 29. The first load element and the second load element are located outside the housing. In this way, the two load elements do not occupy space inside the housing. Electronic devices can be made smaller. In addition, components of other devices may serve as the first load element and the second load element.

The connection portion is used to connect with the first load element or the second load element, and can convert the connection relationship between the two load elements. For example, the electronic device further includes a conversion device for converting the connection portion between the first load element and the second load element.

When it is necessary to drive the first load element to vibrate, the connection portion is connected to the first load element through the conversion device. At this time, the connection portion is not connected to the second load element.

When it is necessary to drive the second load element to vibrate, the connection portion is connected to the first load element through the conversion device. At this time, the connection portion is connected to the first load element and disconnected.

The interaction force of the magnetic permeator 25 and the first permanent magnet, that is, the driving force, can be calculated by the following formula:

among them,

Where M is the magnetization of the medium, B is the magnetic induction, n is the surface normal vector, μ _r is the relative permeability of the magnetic medium, μ ₀ is the permeability of the vacuum, and S is the area. If it is assumed that the magnetic field is uniform in the magnetic field of the permeator, the above formula can also be expressed in the following simplified form:

It can be seen that the driving force of the magnetic vibrator 25 is proportional to the square of the magnetic induction intensity and the area. Under normal circumstances, it is difficult to increase the area of the magnetic vibrator under the influence of the application environment, and increasing the magnetic induction intensity of the first permanent magnet can effectively increase the driving force. For example, the first permanent magnet with a higher magnetic induction intensity is provided, or multiple first permanent magnets are used together to increase the magnetic induction intensity. For example, the multiple first permanent magnets form a Halbach array to increase the magnetic induction intensity.

In one example, as shown in FIGS. 1-2, the first permanent magnet includes a first magnet 13 and a second magnet 14 that are oppositely arranged. The magnetic induction intensity of the magnetic field formed by this arrangement is uniform, which makes the magnetic vibrator 25 to be evenly stressed when vibrating. For example, the first magnet 13 and the second magnet 14 are both bar magnets. The first magnet 13 and the second magnet 14 may be, but not limited to, ferrite magnets and neodymium iron boron magnets.

The polarities of the sides of the first magnet 13 and the second magnet 14 that are close to each other are opposite. In this way, the magnetic field between the first magnet 13 and the second magnet 14 has a stronger magnetic induction. The suspended portion is located between the first magnet 13 and the second magnet 14 and is spaced apart from the first magnet 13 and the second magnet 14. For example, the first magnet 13 and the second magnet 14 are provided symmetrically on the upper and lower sides of the suspended portion in the vibration direction. The upper surface of the suspended portion faces the N pole of the first magnet 13, and the lower surface faces the S pole of the second magnet 14. When the coil 16 is energized, the floating portion is magnetized to the N pole.

In this way, the suspended portion repels the first magnet 13 and attracts the second magnet 14. This causes the suspension to be subjected to the magnetic force of the two magnets, and the direction of the two forces is the same. The driving force of the electromagnetic actuator is stronger, the amplitude is larger, and the vibration sensitivity is higher.

Of course, the first permanent magnets are not limited to two, but may be set to more. For example, a plurality of first permanent magnets are provided on the inner wall of the housing along the extending direction of the magnetic vibrator 25. It may also be that multiple first permanent magnets form a Helmhertz array to increase magnetic properties.

Of course, the setting method of the plurality of first permanent magnets is not limited to this, and those skilled in the art may set according to actual needs.

In an embodiment of the present invention, the electronic device is provided with a first load element and a second load element. The conversion device can switch the connection relationship between the magnetic vibrator and the first load element or the second load element. In the above manner, it is possible to switch different load elements in different application scenarios, thereby providing different vibration directions, vibration modes, and vibration sensing experience.

In one example, the first load element is a diaphragm, a weight, or a plate for sounding. The second load element is a diaphragm, a weight, or a plate for sounding. The diaphragm and the weight block are common knowledge in the art and will not be described in detail here. The board for sounding may be, but not limited to, a casing of an electronic terminal, a screen (for example, the first screen 21 and the second screen 22), PCB, FPCB, or the like.

For example, the first load element is an element for sound generation, such as a diaphragm, a screen such as the first screen 21 and the second screen 22), and so on. The second load element is a weight block, for example, a metal block, a plastic block, a ceramic block, a glass block, and the like. In this example, when the magneto-vibrator drives the first load element, the electronic device is used to generate sound; when the magneto-vibrator drives the second load element, the electronic device is used to provide a vibration-sensing experience, such as a vibration prompt for touch.

In one example, the first load element and the second load element are respectively located on both sides of the magnetic vibrator in the vibration direction. In this example, when the magneto-vibrator is connected to one of the load elements (eg, the first load element), the magneto-vibrator is simultaneously away from the other load element (eg, the second load element), so that the vibration of the magneto-vibrator Does not affect the second load element.

In one example, as shown in FIG. 2, the suspended portion passes through the coil 16 and passes through one end of the coil 16. At least a part of the suspended portion outside the coil 16 is opposed to the first permanent magnet. The coil 16 has a hollow structure. The suspended portion extends in the axial direction of the coil 16. The suspended portion is partially located in the hole of the coil 16. In this way, the arrangement of the magnetic vibrator 25 makes full use of the space inside the coil 16, which is beneficial to the miniaturized design of electronic equipment.

In addition, the floating portion is located at the center of the coil 16. This makes the dangling portion more fully magnetized, stronger in magnetism, and the driving force of the electromagnetic actuator is greater.

In other examples, the coil 16 is located outside the suspended portion. In this arrangement, the magnetic vibrator 25 can also be magnetized.

Preferably, the coil 16 is spaced from the suspended portion to provide a vibration space for the vibration of the suspended portion. In this way, it is possible to extend the length of the suspended portion, so that the amplitude of the electromagnetic exciter is greater.

In addition, the way of being spaced apart makes the heat dissipation effect of the coil 16 better.

In other examples, a multi-point support is formed between the coil 16 and the suspended portion. With this arrangement, the heat dissipation of the coil 16 is faster, which improves the long-term use effect of the electronic device.

In one example, as shown in FIG. 1, the magnetic permeator has a T-shaped structure. The T-shaped structure includes a first side and a second side 27 connected to one end of the first side. One end of the first side is connected to the middle of the second side 27. The other end of the first side is the fixed end. The fixed end is clamped and fixed between the shell walls of the first casing 11 and the second casing 12. The connecting portion includes the second side 27. Both ends of the second side 27 correspond to the first load element and the second load element, respectively. When it is necessary to drive the first load element (for example, the first screen 21), one end of the second side 27 (counted as the first end) is connected to the first load element, and the other end (counted as the second end) is connected to the second load The elements are not connected; when it is necessary to drive the second load element (for example, the second screen 22), the second end is connected to the second load element, and the first end is not connected to the first load element. The T-shaped structure is easy to manufacture and process, and takes up little space.

In one example, as shown in FIGS. 1-2, the conversion device includes two second permanent magnets respectively disposed on the first load element and the second load element. The polarities of the two second permanent magnets on the side facing the connection part are opposite. After the connection part is magnetized, one of the second permanent magnets is attracted to the connection part. For example, the two second permanent magnets are the third magnet 23 and the fourth magnet 24, respectively.

In use, an instantaneous high current is passed through the coil 16 to magnetize the magneto-vibrator 25. After being magnetized, the magnetic transducer 25 moves instantaneously to one side due to the magnetic attraction (for example, the magnetic force from the third magnet 23). When the set displacement is exceeded, the first end of the magnetic vibrator 25 is instantly and firmly attracted to the third magnet 23. In this way, the magnetic vibrator 25 and the first load element (for example, the first screen 21) are connected together. After that, when an alternating current signal is passed through the coil 16, the magnetic vibrator 25 drives the first screen 21 to vibrate.

When the switching is performed, a reverse instantaneous high current is passed through the coil 16 so that the magneto-vibrator 25 is magnetized to the opposite polarity as before. After being magnetized, due to the repulsive force of the third magnet 23 and the magnetic attraction of the fourth magnet 24, the magnetic vibrator 25 moves to the other side instantly. When the set displacement is exceeded, the second end of the magnetic vibrator 25 is instantly and firmly attracted to the fourth magnet 24. In this way, the magnetic vibrator 25 and the second load element (for example, the second screen 22) are connected together. After that, when an alternating current signal is passed through the coil 16, the magnetic vibrator 25 drives the second screen 22 to vibrate.

The instantaneous high current is direct current, and the magnitude of the current is larger than the current of the alternating signal of the coil 16, for example, it is more than twice the current during normal operation of the coil 16. The magnitude of the alternating current does not reach the magnitude of the instantaneous high current, so it will not change the attracting state of the magnetic vibrator 25.

In this example, by applying an instantaneous high current in different directions to the coil 16 to switch the connection relationship between the connection portion and the two load elements, the conversion operation is very easy.

In addition, in this example, there is no need to redesign the components other than the two load elements, so that the structure of the conversion device is simple, the design is easy, and the volume of the electronic device is small.

In addition, the electromagnetic actuator can convert the connection relationship with the first screen 21 and the second screen 22 through the conversion device, so as to drive the first screen 21 or the second screen 22 to radiate sound in different directions, respectively.

In addition, the electromagnetic exciter uses a magnetically permeable cantilever structure. Under the action of excitation at different frequencies, the magnetic vibrator 25 will exhibit different vibration modes. Vibration modes at different frequencies will increase the vibration amplitude of the magnetic vibrator 25 in this frequency interval, thereby broadening the frequency band of the electronic device.

In addition, the electronic device uses a set of electromagnetic actuators to drive two screens. The thickness of the electronic device can be made smaller, which conforms to the development trend of miniaturization and thinning of electronic devices.

In one example, a buffer element is provided between the second permanent magnet and the first load element and/or between the second permanent magnet and the second load element. The buffer element is used to buffer the impact force between the magnetic vibrator 25 and the second permanent magnet to prevent the second permanent magnet from being damaged. For example, the material of the buffer element may be, but not limited to, rubber, silicone, spring, etc.

For example, the third magnet 23 and the fourth magnet 24 are both sheet-shaped. The third magnet 23 is bonded to the rubber pad 18 by an adhesive, and the other surface of the rubber pad 18 is bonded to the first screen 21. The fourth magnet 24 is bonded to the rubber pad 18 by an adhesive, and the other surface of the rubber pad 18 is bonded to the second screen 22.

In other examples, the first load element and the second load element are detachably connected with the connection portion. The conversion device includes a manipulator. The manipulator can move the magneto-vibrator 25 close to one of the load elements and connect it.

In one example, the entire second housing 12 has a sheet-like structure. A shielding sheet is provided outside the second casing 12. The shielding sheet is made of a magnetically conductive material, which can play the role of magnetic permeability and reduce the occurrence of magnetic leakage, so that the magnetic field of the first permanent magnet is stronger and the driving force of the electromagnetic exciter is greater.

As shown in FIG. 1, the second housing 12 has an extending portion extending from the side wall of the first housing 11, and an FPCB 28 is provided on the extending portion. The FPCB 28 is electrically connected to the coil 16. The external device supplies power to the coil 16 through the FPCB 28. A shielding sheet 19 is provided on the side of the second housing 12 away from the cavity. The shielding edge 19 can effectively shield the interference of the external magnetic field.

In one example, a magnetic fluid is filled between the suspended portion and the first permanent magnet and/or between the suspended portion and the coil 16. For example, a gap is formed between the suspended portion and the first permanent magnet. The magnetic fluid is set in the gap. The magnetic fluid is made up of nano-scale magnetic solid particles, base carrier liquid and surfactant, and is a stable colloidal liquid. Magnetic fluid does not exhibit magnetism at rest; when an external magnetic field is applied, the magnetic fluid is magnetized and exhibits magnetism. The magnetic fluid has viscosity and can generate damping, thereby making the vibration of the magnetic vibrator 25 more stable.

In addition, the magnetic fluid has magnetic permeability properties. In this way, the magnetic fluid is attracted to the area where the magnetic field strength of the suspended portion is high, and does not flow arbitrarily, and the stability is high.

The two load elements are not limited to being screens. In one example, both the first load element and the second load element are counterweights, or the two shell walls of the electronic terminal, for example, the two shell walls have different masses, thereby providing different vibration-sensing experiences. It can also be used for vibration therapy equipment. By converting weights of different masses, different vibration strengths, vibration speeds, etc. are achieved.

It may also be that the first load element is a screen of the electronic terminal; the second load element is a shell wall of the electronic terminal. When switching to screen vibration, the electronic device acts as a screen sounding device; when switching to shell wall vibration, the electronic device acts as a vibration motor.

The electronic terminal has the characteristics of large amplitude and good vibration effect.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims

An electronic device, wherein an electromagnetic exciter, a first load element, and a second load element, the electromagnetic exciter includes a housing, a magnetic vibrator, a coil, and a first permanent magnet, and a cavity is formed inside the housing , The permanent magnet, the coil, and the magneto-vibrator are located in the cavity, the first load element and the second load element are located outside the cavity, and the magneto-vibrator includes interconnected fixings End and a suspended portion, the fixed end is fixed to the housing, a portion of the suspended portion is opposed to and spaced from the first permanent magnet, the suspended portion includes a connection portion, the housing has a through hole, The connecting portion protrudes from the through hole, the connecting portion is used to connect with the first load element or the second load element, and further includes a portion for connecting the connecting portion between the first load element and the In the conversion device for converting between the second load elements, the coil generates an alternating magnetic field in response to an alternating signal of an external circuit, the magnetic permeator is magnetized under the action of the alternating magnetic field, and the first The permanent magnet is configured to interact with the suspended portion to drive the vibrator to vibrate, and the vibrator to drive the first load element or the second load element to vibrate.
The electronic device according to claim 1, wherein the first load element and the second load element are respectively located on both sides of the magnetic vibrator in the vibration direction.
The electronic device according to claim 2, wherein the magnetic permeator has a T-shaped structure, the T-shaped structure includes a first side and a second side connected to one end of the first side, the first The other end of the side is the fixed end, and the connecting portion includes the second side, and both ends of the second side respectively correspond to the first load element and the second load element.
The electronic device according to claim 1, wherein the conversion device includes two second permanent magnets respectively disposed on the first load element and the second load element, and two second permanent magnets The side of the side facing the connecting portion has the opposite polarity. After the connecting portion is magnetized, one of the second permanent magnets is attracted to the connecting portion.
The electronic device according to claim 4, wherein an instantaneous high current is passed through the coil to magnetize the connection portion, and the magnitude of the current of the instantaneous high current is larger than that of the alternating signal.
The electronic device according to claim 4, wherein a buffer element is provided between the second permanent magnet and the first load element and/or between the second permanent magnet and the second load element .
The electronic device according to any one of claims 1 to 6, wherein the coil is sheathed outside the suspended portion, between the coil and the magneto-vibrator and/or the first A magnetic fluid is provided between the permanent magnet and the magnetically conductive vibrator.
The electronic device according to any one of claims 1 to 6, wherein the housing includes a first housing and a second housing, and the fixed end is clamped and fixed to the first housing and Between the shell walls of the second shell.
The electronic device according to any one of claims 1 to 6, wherein the first load element is an LED screen, an LCD screen or an OLED screen; the second load element is an LED screen, an LCD screen or an OLED screen .
The electronic device according to any one of claims 1 to 6, wherein the first permanent magnet includes a first magnet and a second magnet that are relatively disposed on both sides of the magnetic vibrator in the vibration direction.