CN111601213B

CN111601213B - Electroacoustic module, electronic equipment and audio output method

Info

Publication number: CN111601213B
Application number: CN202010474877.XA
Authority: CN
Inventors: 李明阳
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2022-04-19
Anticipated expiration: 2040-05-29
Also published as: CN111601213A

Abstract

The application relates to an electroacoustic module, an electronic device and an audio output method. The electronic equipment comprises a middle frame, a first appearance part, a second appearance part and an electroacoustic module. The first appearance part and the second appearance part are respectively arranged on two opposite sides of the middle frame, and the electroacoustic module is connected to the middle frame. The electroacoustic module comprises a magnetic circuit system, and a vibrating diaphragm coil and an electromagnetic driving module which are arranged on two opposite sides of the magnetic circuit system. The first appearance part is opposite to the diaphragm coil, and the diaphragm coil generates vibration when being connected with current; the second appearance component is connected to the electromagnetic driving module and is driven by the electromagnetic driving module to vibrate. The electronic equipment can determine the sounding component according to the actual orientation of the electronic equipment currently used by the user, so that the situation that the user needs to turn the electronic equipment to the surface of one side only with the sounding hole when using the electronic equipment is avoided, and the electronic equipment has relatively high use convenience.

Description

Electroacoustic module, electronic equipment and audio output method

Technical Field

The present application relates to the field of consumer electronics, and in particular, to an electroacoustic module, an electronic device, and an audio output method.

Background

With the development and progress of science and technology, the communication technology has been developed rapidly and greatly, and with the improvement of the communication technology, the popularization of intelligent electronic products has been improved to an unprecedented level, and more intelligent terminals or electronic devices become an indispensable part of the life of people, such as smart phones, smart televisions, computers and the like.

According to the traditional electronic equipment, an audio file to be played is converted into an analog signal through a telephone receiver and sound waves which can be heard by human ears are output, so that people can listen to audio, such as voice call, voice message, video call and the like, through the electronic equipment. However, at present, a receiver of an electronic device is usually disposed at one side of a display screen, and a sound outlet corresponding to the receiver needs to be formed on a housing of the electronic device, so as to guide sound emitted by the receiver to the outside. When the user uses, often need the gesture of adjustment electronic equipment, for example the upset front and back to aim at the position of going out the sound hole with the ear and just can listen to the audio frequency, it is comparatively loaded down with trivial details to use.

Disclosure of Invention

The embodiment of the application provides an electroacoustic module, electronic equipment and an audio output method.

In a first aspect, an embodiment of the present application provides an electroacoustic module. The electroacoustic module comprises a magnetic circuit system, a diaphragm coil and an electromagnetic driving module. The magnetic circuit system is used for generating a magnetic field, the diaphragm coil is arranged on one side of the magnetic circuit system and is positioned in the magnetic field generated by the magnetic circuit system, and the diaphragm coil generates vibration when being connected with current. The electromagnetic driving module is arranged on one side of the magnetic circuit system, which is far away from the diaphragm coil, and is positioned in a magnetic field generated by the magnetic circuit system, and a vibration gap is formed between the electromagnetic driving module and the magnetic circuit system; the electromagnetic driving module is used for connecting a load and is driven by electromagnetic force generated by a magnetic field based on the magnetic circuit system to drive the load to vibrate.

In a second aspect, an embodiment of the present application further provides an electronic device, which includes a middle frame, a first appearance component, a second appearance component, and the electroacoustic module, where the first appearance component and the second appearance component are respectively disposed on two opposite sides of the middle frame, and the electroacoustic module is connected to the middle frame. The first appearance part is arranged opposite to the diaphragm coil; the second appearance component is connected to the electromagnetic driving module and is driven by the electromagnetic driving module to vibrate.

In a third aspect, an embodiment of the present application further provides an audio output method, which is applied to the electronic device described above, where the audio output method includes: when the electronic equipment acquires an audio file to be played, one of the first appearance component and the second appearance component facing a user is determined, if the first appearance component faces the user, audio current is input to the diaphragm coil according to the audio file, and if the second appearance component faces the user, audio current is input to the electromagnetic driving module according to the audio file.

In the electronic device, the electroacoustic module and the audio output method provided by the embodiment of the application, the diaphragm coil and the electromagnetic drive module are respectively arranged on two sides of the magnetic circuit system and respectively correspond to the first appearance part and the second appearance part of the electronic device, wherein when the diaphragm coil is connected with the audio current, the diaphragm coil can be stressed in the magnetic field of the magnetic circuit system to produce sound, the sound can be transmitted to a user by the first appearance part, and the electromagnetic drive module drives the load to vibrate and drive the second appearance part to vibrate and produce sound by the electromagnetic force generated by the magnetic field based on the magnetic circuit system. Through the scheme, the electronic equipment is provided with the electroacoustic module with the two sides capable of producing sound, and a user can listen to the audio according to the more convenient posture of the electronic equipment without turning over the electronic equipment when listening to the audio, for example, when the first appearance part of the electronic equipment faces the user, the user can listen to the audio through the diaphragm coil on the side of the first appearance part; when the second appearance part of the electronic device faces towards the user, the second appearance part can be driven by the electromagnetic driving module to vibrate so as to directly transmit the sound to the outside (such as to the ear of the user).

Therefore, the electronic equipment can determine the sounding component according to the actual orientation of the electronic equipment currently used by the user, the situation that the user needs to turn the electronic equipment to the surface of one side only with the sounding hole when using the electronic equipment is avoided, and the electronic equipment has relatively high use convenience. Furthermore, because the vibrating diaphragm coil and the electromagnetic driving module share the same magnetic circuit system, the structure of the electroacoustic module with double-sided sounding can be simplified, the thickness of the electronic equipment can be reduced, and the development trend of miniaturization and light weight and thinness of the electronic equipment is met.

Drawings

In order to more clearly illustrate the technical solution of the application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an electronic device provided in an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view of the electronic device of fig. 1 along line II-II.

Fig. 3 is a schematic cross-sectional view of an electroacoustic module according to an embodiment of the present application.

Fig. 4 is a perspective assembly view of the electroacoustic module shown in fig. 3.

Fig. 5 is a schematic exploded perspective view of the electroacoustic module shown in fig. 4.

Fig. 6 is a schematic cross-sectional view of an electroacoustic module according to another embodiment of the present application.

Fig. 7 is a schematic cross-sectional view of an electroacoustic module according to still another embodiment of the present application.

Fig. 8 is a functional block diagram of an electronic device provided in an embodiment of the present application.

Fig. 9 is a block flow diagram of an audio output method according to an embodiment of the present application.

Fig. 10 is a block flow diagram of an audio output method according to another embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As used in embodiments herein, "electronic device" includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal", an "electronic apparatus", and/or an "electronic device". Examples of electronic devices include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; as well as conventional laptop and/or palmtop receivers, gaming consoles, or other electronic devices that include radiotelephone transceivers.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 1, the present disclosure provides an electronic device 200 having an electroacoustic module 100, where the electronic device 200 may be, but is not limited to, an electronic device such as a mobile phone, a tablet computer, a game machine, a smart watch, and the like. The electronic device 200 of the present embodiment is described by taking a mobile phone as an example, and the electroacoustic module 100 is located inside the electronic device 200 and is used for converting an electric signal into a sound signal so that a user can hear an audio frequency.

The electronic device 200 includes a middle frame 210, a design structure assembly 230, the electroacoustic module 100, and an electronic assembly (not shown). The electronic assembly comprises a mainboard, and a central processing unit, a memory, an antenna, a camera, a sensor and the like which are arranged on the mainboard. The portable electronic device also comprises a printed circuit board and a functional module (such as a battery, a connector, a fingerprint module and the like) arranged on the printed circuit board. The middle frame 210 serves as a main supporting structure of the electronic device 200, and the electronic components and the electroacoustic module 100 are disposed on the middle frame 210. The exterior structural component 230 serves as an exterior surface of the electronic device 200, and substantially covers at least a portion of an outer surface of the middle frame 210. It should be noted that, in the present specification, when an element is referred to as being "disposed on" another element, it can be directly connected to the other element or intervening elements may be present (i.e., indirectly connected to the other element); when a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present, i.e., there may be an indirect connection between the two components.

In the embodiment of the present application, the appearance structure assembly 230 may include a display screen and/or a housing. Specifically, in the embodiment shown in fig. 1, the appearance structure assembly 230 includes a first appearance part 231 and a second appearance part 233, and the first appearance part 231 and the second appearance part 233 are respectively located at two opposite sides of the middle frame 210. In this embodiment, the first appearance part 231 and the second appearance part 233 are both display screens, so that the electronic device 200 has a larger display area, and the requirement of the user for large-area display is met. Further, in the present embodiment, the appearance structure assembly 230 further includes a third appearance component 235, and the third appearance component 235 is also a display screen, and is connected between the first appearance component 231 and the second appearance component 233. The first appearance member 231, the third appearance member 235 and the second appearance member 233 in this embodiment are sequentially connected to form an integral display screen, so that the electronic device 200 is a dual-panel electronic device having a side display portion. In other embodiments, the third appearance part 235 may be a side frame of the electronic device 200, and the first appearance part 231 and the second appearance part 233 are not necessarily connected to each other in appearance, in which case, the electronic device 200 is also a dual-panel electronic device. It should be understood that the designations of the "first appearance member", "second appearance member", and "third appearance member" are merely a division of nomenclature for convenience of description, wherein each may not have a distinct line of demarcation therebetween, or may be two or more members assembled together, respectively, and the nomenclature of the first appearance member "," second appearance member ", and" third appearance member "should not impose limitations on the structure of the appearance structure assembly 230.

Referring to fig. 2, the middle frame 210 is disposed between the first external member 231 and the second external member 233, and is used for mounting the electroacoustic module 100. In the present embodiment, the middle frame 210 includes a first surface 211 and a second surface 213 facing away from each other. The first surface 211 is disposed opposite to the first appearance part 231 and is coupled to the first appearance part 231 to bear and support the first appearance part 231. The second surface 213 is disposed opposite to the second appearance member 233 and is coupled to the second appearance member 233 to carry and support the second appearance member 233.

Further, in the present embodiment, the middle frame 210 is formed with a receiving hole 215, and the receiving hole 215 is used for receiving the electroacoustic module 100. The receiving hole 215 penetrates the first surface 211 and the second surface 213, so that both ends of the electroacoustic module 100 disposed in the receiving hole 215 can be exposed through the first surface 211 and the second surface 213. Further, the receiving hole 215 is a stepped hole having a stepped portion for connecting the electroacoustic module 100. Specifically, the middle frame 210 further includes a stepped surface 2151 located in the receiving hole 215, the stepped surface 2151 being oriented in correspondence with the second surface 213. The stepped surface 2151 is used to connect the electroacoustic module 100, so as to facilitate installation and fixation of the electroacoustic module 100, and to make the installation structure of the electroacoustic module 100 more stable.

The electroacoustic module 100 is connected to the middle frame 210 for converting the audio digital signal into an analog signal, and is connected to the second external component 233 for driving the second external component 233 to vibrate and generate sound. In the present embodiment, the electroacoustic module 100 is a combined structure of a diaphragm coil and a vibration exciter, and is disposed in the receiving hole 215 and connected to the step surface 2151.

The electroacoustic module 100 includes a magnetic circuit system 10, a diaphragm coil 30, and an electromagnetic driving module 50. The magnetic circuit system 10 is used for generating a magnetic field, and the diaphragm coil 30 and the electromagnetic driving module 50 are respectively arranged on two opposite sides of the magnetic circuit system 10; the magnetic circuit system 10 can generate a constant magnetic field, the diaphragm coil 30 is located in the constant magnetic field, and when the diaphragm coil 30 is connected with current, the diaphragm coil is stressed and vibrates to produce sound in the constant magnetic field; the electromagnetic driving module 50 is located in the magnetic field generated by the magnetic circuit system 10, a vibration gap 501 is formed between the electromagnetic driving module 50 and the magnetic circuit system 10, and the electromagnetic driving module 50 can be driven by the electromagnetic force generated by the magnetic field based on the magnetic circuit system to drive the second appearance component 231 to vibrate and generate sound. Therefore, the electronic device 200 has the electroacoustic module 100 capable of generating sound on both sides, so that a user can listen to the sound according to a more convenient posture of the electronic device 200 without turning the electronic device 200 when listening to the sound, for example, when the first appearance part 231 of the electronic device 200 faces the user, the user can listen to the sound through the diaphragm coil 30 on the first appearance part 231 side; when the second external member 233 of the electronic device 200 faces the user, the second external member 233 may be driven to vibrate by the electromagnetic driving module 50 to directly transmit the sound to the outside (e.g., into the ear of the user), and the electronic device 200 has relatively high convenience in use.

In the present embodiment, the magnetic circuit system 10 may include an element or assembly capable of generating a magnetic field, which is not limited by the present embodiment. For example, the magnetic circuit system 10 may include a permanent magnet and/or an electromagnet. The diaphragm coil 30 and the electromagnetic driving module 50 may be an electromagnetic/magnetic assembly adapted to the magnetic circuit system 10 to be driven by electromagnetic force generated based on the magnetic field of the magnetic circuit system 10 to vibrate and generate sound.

For example, in some embodiments, the magnetic circuit system 10 may include a permanent magnet capable of generating a constant magnetic field in which the diaphragm coil 30 is disposed, and when the diaphragm coil 30 is connected to an audio current, it can vibrate and generate sound under the driving of electromagnetic force in the constant magnetic field; at this time, the electromagnetic driving module 50 may include a voice coil assembly disposed in the constant magnetic field, and when the voice coil assembly is connected to the audio current, the voice coil assembly may be driven by the electromagnetic force in the constant magnetic field to vibrate, so as to drive the second appearance component 233 to generate sound.

For another example, in other embodiments, the magnetic circuit system 10 may include an electromagnet, which is capable of generating a constant magnetic field when the electromagnet is connected to a direct current, and the diaphragm coil 30 is disposed in the constant magnetic field, and is capable of vibrating and sounding when the diaphragm coil 30 is connected to an audio current, and is driven by an electromagnetic force in the constant magnetic field; at this time, the electromagnetic driving module 50 may include a voice coil assembly disposed in the constant magnetic field, and when the voice coil assembly is connected to the audio current, the voice coil assembly may be driven by the electromagnetic force in the constant magnetic field to vibrate, so as to drive the second appearance component 233 to generate sound.

For another example, in other embodiments, the magnetic circuit system 10 may include an electromagnet, which is capable of generating a constant magnetic field when the electromagnet is connected to a direct current, and the diaphragm coil 30 is disposed in the constant magnetic field, and is capable of vibrating and generating sound when the diaphragm coil 30 is connected to an audio current, and is driven by the electromagnetic force in the constant magnetic field; at this time, the electromagnetic driving module 50 may include a permanent magnet disposed in the constant magnetic field, and when the second appearance component 233 needs to generate sound, an alternating current (e.g., an audio current) may be applied to the electromagnet of the magnetic circuit system 10 to generate an alternating magnetic field, so that the permanent magnet of the electromagnetic driving module 50 may be driven by a reaction force of the electromagnetic force in the alternating magnetic field to vibrate, thereby driving the second appearance component 233 to generate sound.

The present specification will now be described in detail with reference to a few embodiments thereof as illustrated in the accompanying drawings.

Referring to fig. 3, fig. 3 is a schematic cross-sectional view of an electroacoustic module 100 according to an embodiment of the present disclosure. In the present embodiment, the magnetic circuit system 10 includes a fixing member 12 and a magnet assembly 14, the fixing member 12 is fixed to the middle frame 210, and the magnet assembly 14 is disposed on the fixing member 12.

Further, the fixing member 12 includes a bearing portion 121 and a frame 123, and the bearing portion 121 is substantially plate-shaped and is used for bearing the magnet assembly 14. The bearing part 121 is provided with through holes 1211 penetrating opposite sides of the bearing part 1211, and the through holes 1211 are used for fixing the magnet assembly 14 so that the magnet assembly 14 can be exposed to both sides of the fixing member 12 to prevent the magnetic field generated by the magnet assembly 14 from being interfered or shielded. The frame 123 is substantially annular frame-shaped, surrounds the outer periphery of the bearing part 121, and protrudes relative to the surface of the bearing part 121. In the embodiment shown in fig. 3, one end of the frame 123 protrudes toward the diaphragm coil 30 relative to the bearing portion 121, so as to form a space for partially accommodating the diaphragm coil 30 or/and the magnet assembly 14 together with the bearing portion 121, and provide sufficient space for the movement of the diaphragm coil 30. The other end of the frame 123 protrudes toward the electromagnetic drive module 50 relative to the bearing portion 121 to form a space for partially accommodating the electromagnetic drive module 50 together with the bearing portion 121, and provide a sufficient space for the movement of the electromagnetic drive module 50.

Referring to fig. 4 to 5, further, in the present embodiment, the fixing member 12 is made of magnetic steel. The fixing member 12 further includes a connecting portion 125, and the connecting portion 125 is connected to the frame 123. The connecting portion 125 is used to integrally connect the electroacoustic module 100 to the center frame 210 by a fastener. In this embodiment, there are two connecting portions 125, and the two connecting portions 125 are respectively disposed at two opposite ends of the frame 123 and protrude from the frame 123. The connection part 125 is overlapped on the step surface 1215 of the middle frame 210 and connected with the step surface 1215 by a fastener to integrally mount the electroacoustic module 100 to the middle frame 210. By providing two substantially symmetrical connecting portions 125, the strength of connection between the fixing member 12 and the middle frame 210 can be increased. In other embodiments, the number of the connecting portions 125 may be one or more than two, or the connecting portions 125 may also have a connecting structure disposed around the periphery of the middle frame 210, and is not limited by the embodiments of the present disclosure.

Further, in the present embodiment, the magnetic circuit system 10 further includes a fastener 16, and the fastener 16 connects the connecting portion 125 and the middle frame 210 together. The fastening member 16 may be a threaded fastening member, such as a screw, a bolt, or other mechanical fastening member, such as a buckle, and in this case, the middle frame 210 may be provided with a slot structure that is engaged with the buckle, and the buckle and the slot cooperate to realize the connection between the magnetic circuit system 10 and the middle frame.

Further, in this embodiment, the magnetic circuit system 10 further includes two sets of elastic members 18, where one set of elastic members 18 is connected between the fixed member 16 and the diaphragm coil 30, and is used to substantially define the relative positions of the diaphragm coil 30 and the magnetic circuit system 10, and enable the diaphragm coil 30 to have a degree of freedom of vibration without being separated from the magnetic circuit system 10 by its own elastic force; another set of elastic members 18 is connected between the fixing member 16 and the electromagnetic driving module 50, and is used to substantially define the relative positions of the electromagnetic driving module 50 and the magnetic circuit system 10, and make the electromagnetic driving module 50 have the freedom of vibration without being separated from the magnetic circuit system 10 by its own elastic force. By providing the elastic member 18, the magnetic circuit system 10, the diaphragm coil 30 and the electromagnetic driving module 50 can be connected together, so that the electroacoustic module 100 forms a modular component, which is beneficial to the modular assembly of the electronic device 200, thereby reducing the assembly cost of the electronic device 200. Each set of elastic members 18 may include a plurality of elastic member units, and each elastic member unit may be a spring sheet, a spring, or the like.

Referring to fig. 3 again, the magnet assembly 14 is fixed in the through hole 1211 of the carrying portion 121, and the vibration gap 501 is formed between the magnet assembly 14 and the electromagnetic driving module 50. In the present embodiment, the magnet assembly 14 includes a permanent magnet for generating a constant magnetic field. In other embodiments, the magnet assembly 14 may include an electromagnet, which may include a core and a coil surrounding the core, the coil being electrically connected to the main board of the electronic device 200, and when the coil is inputted with a direct current, the electromagnet may generate a constant magnetic field, and the magnetic flux of the constant magnetic field may be flexibly controlled, thereby facilitating the control of the electroacoustic assembly 100.

Further, in the present embodiment, the magnet assembly 14 includes a first permanent magnet 141 and a second permanent magnet 143, the first permanent magnet 141 is fixed to the through hole 1211 of the fixing member 12, the second permanent magnet 143 is spaced apart from the first permanent magnet 141, a constant magnetic field is formed therebetween, and a part of the structure of the diaphragm coil 30 is disposed in the constant magnetic field. Taking the left-right direction in fig. 3 as an example, the first permanent magnet 141 is substantially block-shaped, and the magnetic poles thereof are respectively located at the left and right ends thereof, the number of the second permanent magnets 143 is two, and the two second permanent magnets 143 are respectively fixed to the fixing member 10 and respectively disposed at the left and right sides of the first permanent magnet 141 to form a stable magnetic field together with the magnetic poles at the left and right ends of the first permanent magnet 141.

The diaphragm coil 30 includes a diaphragm 32 and a voice coil 34, the diaphragm 32 is disposed opposite to the first appearance component 231, and the voice coil 34 is disposed on a side of the diaphragm 32 facing the magnetic circuit system 10. The voice coil 34 is in a constant magnetic field generated by the magnet assembly 14, and is capable of being forced to move relative to the magnet assembly 14 when a current is applied, so that the diaphragm 32 drives the first appearance part 231 to vibrate and generate sound. Further, the voice coil 34 is movably disposed between the first permanent magnet 141 and the second permanent magnet 143. In this embodiment, in order to facilitate the sound emitted from the diaphragm coil 30 to be transmitted, the first appearance part 231 may be provided with a sound hole 2311 (see fig. 2), and the diaphragm 32 is disposed opposite to the sound hole 2311.

The electromagnetic driving module 50 is disposed on a side of the magnetic circuit system 10 away from the diaphragm coil 30, and includes a connecting member 52 and a voice coil assembly 54, wherein the connecting member 52 is connected to the second appearance component 233, and the voice coil assembly 54 is disposed on a side of the connecting member 52 facing the magnetic circuit system 10. The voice coil assembly 54 is in a constant magnetic field generated by the magnet assembly 14, and is capable of being forced to move relative to the magnet assembly 14 when a current is applied, so that the second appearance part 233 is driven by the connecting piece 52 to vibrate and generate sound.

In the present embodiment, the connecting member 52 is substantially thin and is used for supporting the second appearance member 233 to prevent the second appearance member 233 from deforming and collapsing and to move the second appearance member 233. Further, in order to avoid interference with the movement of the connector 52, the second surface 213 of the middle frame 210 is provided with a groove 2131 (see fig. 2), the groove 2131 communicating with the through hole 215. The connecting element 52 is accommodated in the groove 2131, and the connecting element 52 is spaced from the bottom wall of the groove 2131, so that the connecting element 52 can move smoothly without interference in the space defined by the groove 2131. In the present embodiment, the connecting member 52 is made of a rigid material, for example, the connecting member 52 may be a steel plate, an iron plate, or other structures with high rigidity, so that the connecting member 52 is not easily deformed, and the connecting member 52 and the second appearance member 233 have a relatively large contact area, thereby reliably supporting the second appearance member 233.

The voice coil assembly 54 is disposed on a side of the coupling member 52 facing the magnet assembly 14 and spaced apart from the magnet assembly 14, and a vibration gap 501 is formed between the voice coil assembly 54 and the first magnet 141 of the magnet assembly 14. The voice coil assembly 54 includes an iron core 541 and a coil 543 circumferentially disposed around the iron core 541. The coil 543 is electrically connected to the main board of the electronic device 200, and when a current (e.g. ac or audio current) is applied, the coil is forced to move relative to the magnet assembly 14, so as to drive the second appearance component 233 to vibrate and generate sound through the connecting component 52. In the present embodiment, the iron core 541 is a magnet, which can generate a magnetic field with a certain strength, and receives a repulsive force far from the magnet assembly 14 in the constant magnetic field generated by the magnet assembly 14 to partially or completely cancel the drooping force of the electromagnetic driving module 50 on the second appearance member 233, so as to prevent the second appearance member 233 from being deformed due to the existence of the electromagnetic driving module 50, and enable the second appearance member 233 to have a longer service life. In other embodiments, the core 541 may also be an iron block without permanent magnetism.

Further, in the present embodiment, the electromagnetic driving module 50 further includes a supporting member 56, and the supporting member 56 is disposed between the connecting member 52 and the voice coil assembly 54, and is used for enhancing the connection strength between the connecting member 52 and the voice coil assembly 54. In the present embodiment, the support 56 is made of magnetic steel. Since the connector 52 is thin-plate-shaped, it is necessary to provide a connector centered between the connector 52 and the voice coil assembly 54, that is, a support member 56, to prevent the voice coil assembly 54 from falling off the connector 52. Further, when the supporting member 56 and the connecting member 52 project toward the plane of the connecting member 52 (e.g., project toward the plane of the second appearance member 233), the projection of the supporting member 56 falls into the projection of the connecting member 52, so that the connecting area between the connecting member 52 and the second appearance member 233 can be ensured to be large, and the connecting area between the supporting member 56 and the connecting member 23 is relatively small, thereby preventing the second appearance member 233 from being pulled and deformed due to the existence of the supporting member 56. Further, the supporting member 56 is connected to the elastic member 18 to assemble the electroacoustic module 100 into a modular structure.

In the embodiment, the supporting member 56 includes a bottom wall 561 and a peripheral wall 563, the bottom wall 561 is substantially a plate and is connected between the connecting member 52 and the voice coil assembly 54, and the peripheral wall 563 is disposed on a side of the bottom wall 561 away from the connecting member 52 and is connected to the elastic member 18. The peripheral wall 563 protrudes toward the magnetic circuit system 10 relative to the connecting member 52 to form a space for accommodating the voice coil assembly 54 with the bottom wall 561, and at this time, the peripheral wall 563 is disposed around the periphery of the voice coil assembly 54, and the space is correspondingly communicated with the space formed by the frame 123 of the fixing member 12, so as to provide a sufficient space for the vibration of the voice coil assembly 54, and the electroacoustic module 100 has a smaller weight and thickness, which is beneficial to the design of the electronic device 200.

Referring to fig. 6, fig. 6 is a schematic cross-sectional structure diagram of an electroacoustic module 400 according to another embodiment of the present disclosure. The electro-acoustic module 400 has substantially the same structure as the electro-acoustic module 100 provided in the above embodiments, and also includes a magnetic circuit 410, a diaphragm coil 430, and an electromagnetic driving module 450.

The magnetic circuit system 410 includes a fixing member 412, a magnet assembly 414, a fastener 416, and an elastic member 418, wherein the fixing member 412 is fixed to the middle frame 210, and the magnet assembly 414, the fastener 416, and the elastic member 418 are disposed on the fixing member 412. The structure of the fixing element 412 of the present embodiment is substantially the same as that of the fixing element 12 of the previous embodiment, and reference may be made to the description of relevant contents, which is not repeated in this embodiment. Similar to the fixing member 12, the fixing member 412 of the present embodiment includes a bearing portion 4121, a frame 1423 and a connecting portion 4125.

In this embodiment, the magnet assembly 414 includes an electromagnet 4141 fixed to a carrier portion 4121. The electromagnet 4141 generates a constant magnetic field when a direct current is applied thereto, and the diaphragm coil 30 is disposed in the constant magnetic field. The electromagnet 4141 may include an iron core and a coil disposed around the iron core, the coil being electrically connected to the main board of the electronic apparatus 200, the electromagnet 4141 being capable of generating a constant magnetic field when the coil is inputted with a direct current.

Further, in this embodiment, the axis of the iron core of the electromagnet 4141 is substantially perpendicular to the plane of the first appearance component 231, the magnet assembly 414 further includes a magnetizer 4143 and a permanent magnet 4145, the magnetizer 4143 is disposed opposite to the iron core of the electromagnet 4141, and the magnetizer 4143 can be magnetized in the constant magnetic field generated by the electromagnet 4141 to generate two opposite magnetic poles; the permanent magnet 4145 is arranged opposite to at least one magnetic pole of the magnetizer 4143 at an interval, and part of the structure of the diaphragm coil 30 is arranged between the permanent magnet 4145 and the magnetizer 4143. Taking the left-right direction in fig. 6 as an example, the magnetizer 4143 is substantially rectangular block-shaped and is disposed substantially perpendicular to the axis of the iron core of the electromagnet 4141, magnetic poles formed by the magnetizer 4143 under the magnetization of the electromagnet 4141 are respectively located at the left and right ends thereof, two permanent magnets 4145 are provided, the two permanent magnets 4145 are respectively fixed to the fixing member 410 and are respectively disposed at the left and right sides of the magnetizer 4143 to form a stable magnetic field together with the magnetic poles at the left and right ends of the magnetizer 4143.

The diaphragm coil 430 includes a diaphragm 432 and a voice coil 434, the diaphragm 432 is disposed opposite to the first appearance part 231, and the voice coil 434 is disposed on a side of the diaphragm 432 facing the magnetic circuit 410. The voice coil 34 is in a constant magnetic field generated by the magnet assembly 414, and when a current is applied, the voice coil is forced to move relative to the magnet assembly 414, so that the diaphragm 432 drives the first appearance part 231 to vibrate and generate sound. Further, the voice coil 434 is movably disposed between the magnetizer 4143 and the permanent magnet 4145.

The electromagnetic driving module 450 is disposed on a side of the magnetic circuit system 410 away from the diaphragm coil 430, in this embodiment, a structure of the electromagnetic driving module 450 is substantially the same as that of the electromagnetic driving module 50 of the above embodiment, and includes a connecting member 452, a voice coil assembly 454 and a supporting member 456. When the electromagnetic driving module 450 is required to drive the second appearance part 233 to vibrate and sound, the electromagnet 4141 of the magnet assembly 414 is energized with direct current to generate a constant magnetic field, and the voice coil assembly 454 is energized with audio current, so that the voice coil assembly 454 is stressed in the constant magnetic field of the electromagnet 4141 to drive the second appearance part 233 to vibrate and sound; alternatively, the voice coil assembly 454 is energized with a direct current to generate a constant magnetic field, the electromagnet 4141 of the magnet assembly 414 is energized with an audio current to generate an alternating magnetic field, and the voice coil assembly 454 is forced in the alternating magnetic field of the electromagnet 4141 to drive the second appearance member 233 to vibrate and generate sound.

In other embodiments, for example, as shown in fig. 7, the voice coil assembly 454 of the electromagnetic driving module 450 may be replaced by a permanent magnet 458, and when the electromagnetic driving module 450 is required to drive the second appearance component 233 to vibrate and generate sound, an audio current is applied to the electromagnet 4141 of the magnet assembly 414, so that the electromagnet 4141 generates an alternating magnetic field, and the permanent magnet 458 is forced under the action of the alternating magnetic field to drive the second appearance component 233 to vibrate and generate sound.

In electronic equipment and electroacoustic module thereof that this application embodiment provided, with the vibrating diaphragm coil, electromagnetic drive module sets up respectively in magnetic circuit's both sides, and be corresponding to electronic equipment's first outward appearance part and second outward appearance part respectively, wherein, the vibrating diaphragm coil is when inserting audio current, can atress and the sound production in magnetic circuit's magnetic field, sound can be transmitted to user department by first outward appearance part, electromagnetic drive module can drive the vibration of load and drive the vibration of second outward appearance part and make a sound by the produced electromagnetic force drive in magnetic field based on magnetic circuit. Through the scheme, the electronic equipment is provided with the electroacoustic module with the two sides capable of producing sound, and a user can listen to the audio according to the more convenient posture of the electronic equipment without turning over the electronic equipment when listening to the audio, for example, when the first appearance part of the electronic equipment faces the user, the user can listen to the audio through the diaphragm coil on the side of the first appearance part; when the second appearance part of the electronic device faces towards the user, the second appearance part can be driven by the electromagnetic driving module to vibrate so as to directly transmit the sound to the outside (such as to the ear of the user).

In the above embodiments provided by the present application, the first appearance part 231 and the second appearance part 233 are both display screens, and are used as loads of the

electroacoustic modules

100 and 400, and vibrate and sound under the driving of the

electroacoustic modules

100 and 400. The display screen may be an Active-matrix organic light-emitting diode (AMOLED) display panel. The AMOLED display screen is a self-luminous display screen, and a Back Light Module (BLM) is not required. Therefore, when the substrate in the AMOLED display screen is made of a flexible resin material, such as Polyethylene Terephthalate (PET), the AMOLED display screen can have a bendable characteristic, so that the display screen can smoothly vibrate under the driving of the

electroacoustic modules

100 and 400, noise is avoided, and audio output is guaranteed to have good tone quality. In another embodiment, the display panel may be an Organic Light-Emitting Diode (OLED) display panel.

In other embodiments, the first appearance part 231 and the second appearance part 233 may be other types of elements, for example, as an embodiment, the first appearance part 231 includes a housing and a display screen, the housing and the display screen form a part of the appearance surface of the electronic device 200, and the display screen or the housing is provided with a sound outlet hole 2311 corresponding to the diaphragm coil 30; the second external member 231 may also include a housing and a display screen, which form another part of the external surface of the electronic device 200, and the display screen is connected to the electromagnetic driving module 50. As another embodiment, the first appearance part 231 includes a display screen, which forms a part of the appearance surface of the electronic device 200, and is disposed on one side of the diaphragm coil 30 and provided with a sound output control 2311; the second external member 233 includes a housing which forms a part of the external surface of the electronic device 200, and is connected to the electromagnetic driving module 50 and is driven by the electromagnetic driving module 50 to vibrate and generate sound. The description is not exhaustive, and one of the embodiments is a display screen, and the other is a housing of the electronic device 200.

Referring to fig. 8, in an actual application scenario, the electronic device 200 provided in the embodiment of the present application may be used as a smartphone terminal, in which case, the electronic device 200 generally further includes one or more (only one shown in fig. 8) of the following components: a processor 102, a memory 104, a capture module 108, an audio circuit 110, an input module 118, a power module 122, and one or more applications, wherein the one or more applications may be stored in the memory 104 and configured to be executed by the one or more processors 102. It will be understood by those skilled in the art that the structure shown in fig. 8 is merely illustrative and is not intended to limit the structure of the electronic device 200. For example, electronic device 200 may also include more or fewer components than shown in FIG. 8, or have a different configuration than shown in FIG. 8.

The photographing module 108 may be a camera, which is disposed on the appearance structure assembly 230 and is used for performing a photographing task, for example, taking a picture, a video, or making a video phone call. The audio circuitry 110, speaker 101, sound jack 103, microphone 105 collectively provide an audio interface between a user and the electronic device 200. In this embodiment, the input module 118 may include the physical keys 107, the touch screen 109 disposed on the display screen, and the like, and the touch screen 109 may collect touch operations of the user on or near the touch screen 109 (for example, operations of the user on or near the touch screen 109 using any suitable object or accessory such as a finger, a stylus, and the like) and drive the corresponding connection device according to a preset program.

The appearance structure component 230 is a display screen for displaying information input by a user, information provided to the user, and various graphical user interfaces of the electronic device 200, which may be composed of graphics, text, icons, numbers, videos, and any combination thereof.

The power module 122 is used to provide a supply of power to the processor 102 and other components. In particular, power module 122 may include a power management device, one or more power sources (e.g., batteries or ac power), a charging circuit, a power failure detection circuit, an inverter, a power status indicator light, and any other components associated with the generation, management, and distribution of power within electronic components.

It should be understood that the electronic device 200 described above is not limited to a smartphone terminal, but it should refer to a computer device that can be used in mobile. Specifically, the electronic device 200 is a mobile computer device equipped with an intelligent operating device, and the electronic device 200 includes, but is not limited to, a smart phone, a smart watch, a notebook, a tablet computer, a POS device, and even a vehicle-mounted computer.

Referring to fig. 9, based on the electronic device, the electronic device includes a middle frame, a first appearance component, a second appearance component, and an electroacoustic module; the electroacoustic module comprises a magnetic circuit system, a vibrating diaphragm coil and an electromagnetic driving module, wherein the magnetic circuit system is fixed on the middle frame, and the vibrating diaphragm coil is opposite to the first appearance component and is positioned in a magnetic field generated by the magnetic circuit system; the electromagnetic driving module is connected with the second appearance component and is positioned in a magnetic field generated by the magnetic circuit system, and a vibration gap is formed between the electromagnetic driving module and the magnetic circuit system; the electromagnetic driving module comprises a voice coil assembly, and the embodiment of the application also provides an audio output method which comprises the steps of S110-S150.

Step S110: when the electronic equipment acquires an audio file to be played, the electronic equipment determines that the first appearance component and the second appearance component face a user.

Alternatively, the audio files to be played may be from a source including audio and video files, answering and making phone calls, audio and video calls, and so on. In this embodiment, the determining, by the distance sensor, that one of the first appearance component and the second appearance component faces the user may specifically include: and calling a distance sensor of the electronic equipment to acquire a distance parameter between the terminal and the human body, and determining a user facing the first appearance component and the second appearance component according to the distance parameter.

In some embodiments, the determining, by the ultrasonic sensor, that one of the first appearance component and the second appearance component faces the user may specifically include: the electroacoustic module is used for sending ultrasonic signals to two sides of the electronic equipment, the ultrasonic signals are received through a microphone or a microphone of the electronic equipment after reaching a human body or an obstacle, distance parameters between the terminal and the human body are judged according to the front and back reflected ultrasonic signals, and a user facing the first appearance component and the second appearance component are determined according to the distance parameters.

Step S130: and if the first appearance part faces to a user, inputting audio current to the diaphragm coil according to the audio file.

In this embodiment, the magnetic circuit system may include a magnet or an electromagnet for generating a constant magnetic field so that the diaphragm coil can vibrate and sound under the force of the constant magnetic field.

Step S150: and if the second appearance component faces the user, inputting audio current to the electromagnetic driving module according to the audio file.

According to the audio output method, the vibrating diaphragm coil is used for generating sound, or the electromagnetic driving module is used for driving the second appearance part to vibrate for generating sound, the appearance part generating sound can be determined according to the actual orientation of the user currently using the electronic equipment, the situation that the user needs to turn the electronic equipment to a side surface generating the sound when the user uses the electronic equipment is avoided, and therefore the electronic equipment has relatively high use convenience.

Referring to fig. 10, based on the electronic device, the electronic device includes a middle frame, a first appearance component, a second appearance component, and an electroacoustic module; the electroacoustic module comprises an electromagnet, a vibrating diaphragm coil and an electromagnetic driving module, wherein the electromagnet is fixed on the middle frame, and the vibrating diaphragm coil is opposite to the first appearance component and is positioned in a magnetic field generated by the electromagnet; the electromagnetic driving module is connected with the second appearance component and is positioned in a magnetic field generated by the electromagnet, and a vibration gap is formed between the electromagnetic driving module and the electromagnet; the embodiment of the application also provides an audio output method, which comprises the steps S210 to S250.

Step S210: when the electronic equipment acquires an audio file to be played, the electronic equipment determines that the first appearance component and the second appearance component face a user.

Step S230: and if the first appearance part faces the user, inputting direct current to the electromagnet to enable the electromagnet to generate a constant magnetic field, and inputting audio current to the diaphragm coil according to the audio file.

Step S150: and if the second appearance component faces the user, inputting audio current to the electromagnet according to the audio file, so that the electromagnetic driving module drives the second appearance component to vibrate and sound.

In this embodiment, the electromagnetic driving module may include an electromagnet or a permanent magnet for generating a constant magnetic field to vibrate by being driven by the electromagnet.

In this specification, particular features or characteristics described may be combined in any one or more embodiments or examples as appropriate. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An electroacoustic module, comprising:

a magnetic circuit system for generating a magnetic field;

the vibrating diaphragm coil is arranged on one side of the magnetic circuit system and is positioned in a magnetic field generated by the magnetic circuit system, and the vibrating diaphragm coil generates vibration when current is connected; and

the electromagnetic driving module is arranged on one side, away from the diaphragm coil, of the magnetic circuit system and is positioned in a magnetic field generated by the magnetic circuit system, and a vibration gap is formed between the electromagnetic driving module and the magnetic circuit system; the electromagnetic driving module is used for connecting a load and is driven by electromagnetic force generated based on a magnetic field of the magnetic circuit system to drive the load to vibrate;

the magnetic circuit system comprises a fixed piece, a magnet assembly and an elastic piece, wherein the magnet assembly and the elastic piece are connected to the fixed piece, and the magnet assembly is fixedly arranged relative to the fixed piece and used for generating the magnetic field;

the elastic piece comprises a first elastic piece and a second elastic piece; the first elastic part is positioned between the fixed part and the vibrating diaphragm coil, two ends of the first elastic part are fixedly connected to the vibrating diaphragm coil, and the middle part of the first elastic part is fixedly connected to the fixed part; the second elastic part is located between the fixing part and the electromagnetic driving module, two ends of the second elastic part are fixedly connected to the electromagnetic driving module, and the middle position of the second elastic part is fixedly connected to the fixing part, so that the magnetic circuit system, the diaphragm coil and the electromagnetic driving module form a modular structure.

2. The electro-acoustic module of claim 1, wherein the vibration gap is formed between the magnet assembly and the electromagnetic drive module.

3. The electroacoustic module of claim 1 wherein the magnet assembly comprises an electromagnet fixed to the fixed member, the electromagnet producing a constant magnetic field when a direct current is applied, the diaphragm coil comprising a voice coil and a diaphragm coupled between the voice coil, the voice coil being disposed within the constant magnetic field.

4. The electro-acoustic module of claim 3, wherein the magnet assembly further comprises a magnetic conductor and a permanent magnet, the magnetic conductor being disposed opposite the core of the electromagnet to be magnetized in the constant magnetic field to produce two opposite poles; the permanent magnet of magnet subassembly with at least one magnetic pole of magnetizer is relative interval setting, the voice coil loudspeaker voice coil set up in the permanent magnet of magnet subassembly with between the magnetic pole of magnetizer.

5. The electro-acoustic module set forth in claim 3, wherein said electromagnetic driving module comprises a permanent magnet and a connecting member for connecting said load, said permanent magnet of said electromagnetic driving module being disposed on a side of said connecting member facing said electromagnet, said vibration gap being formed between said permanent magnet of said electromagnetic driving module and said electromagnet.

6. The electroacoustic module of claim 1 wherein the magnet assembly comprises a first permanent magnet disposed on the stationary member and a second permanent magnet spaced apart from the first permanent magnet; the vibrating diaphragm coil includes the voice coil loudspeaker voice coil and connect in the vibrating diaphragm of voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil set up in first permanent magnet reaches between the second permanent magnet, the vibrating diaphragm connect in the both ends of first elastic component.

7. The electro-acoustic module set forth in claim 6, wherein said electromagnetic driver module comprises a voice coil assembly and a connector, said connector is used for connecting said load, said voice coil assembly is disposed on a side of said connector facing said first permanent magnet, and said vibration gap is formed between said voice coil assembly and said first permanent magnet.

8. The electro-acoustic module of claim 7, wherein said electro-magnetic drive module further comprises a support; the supporting piece comprises a bottom wall and a peripheral wall, the bottom wall is arranged between the connecting piece and the voice coil assembly, and the peripheral wall is arranged on one side of the bottom wall, which is far away from the connecting piece, and surrounds the periphery of the voice coil assembly; the peripheral wall is connected to two ends of the second elastic piece.

9. The electroacoustic module of any of claims 1 to 6 wherein the mounting member comprises a carrier portion and a frame surrounding an outer periphery of the carrier portion, the carrier portion having a through hole, the magnet assembly being mounted in the through hole; one end of the frame body protrudes towards the electromagnetic driving module relative to the bearing part so as to form a space for partially accommodating the electromagnetic driving module together with the bearing part.

10. The electroacoustic module of claim 9 wherein the mounting further comprises a connector portion attached to the frame and adapted to be attached to a location of use of the electroacoustic module by a fastener.

11. An electronic device, comprising a middle frame, a first appearance member, a second appearance member, and the electroacoustic module of any one of claims 1 to 10; the first appearance component and the second appearance component are respectively arranged on two opposite sides of the middle frame, and the electroacoustic module is connected to the middle frame; the first appearance part is arranged opposite to the diaphragm coil; the second appearance component is connected to the electromagnetic driving module and is driven by the electromagnetic driving module to vibrate.

12. The electronic device of claim 11, wherein the middle frame includes a first surface and a second surface that face away from each other, the first surface opposing the first appearance member, the second surface opposing the second appearance member; the middle frame is provided with a containing hole, the containing hole penetrates through the first surface and the second surface, and the electroacoustic module is arranged in the containing hole.

13. The electronic device of claim 12, wherein the receiving hole is a stepped hole, the middle frame further comprising a stepped surface in the stepped hole, the stepped surface facing in the same direction as the second surface, the magnetic circuit system being connected to the stepped surface.

14. The electronic device according to any one of claims 11 to 13, wherein the first appearance member comprises a display screen or a housing, the first appearance member is provided with a sound outlet, and the diaphragm coil is opposite to the sound outlet; the second appearance component comprises a display screen or housing.

15. The audio output method is applied to electronic equipment, and the electronic equipment comprises a middle frame, a first appearance component, a second appearance component and an electroacoustic module; the first appearance part and the second appearance part are respectively arranged on two opposite sides of the middle frame, the electroacoustic module comprises a magnetic circuit system, a diaphragm coil and an electromagnetic driving module, the magnetic circuit system comprises a fixed part, a magnet assembly and an elastic part, the magnet assembly and the elastic part are connected to the fixed part, and the elastic part comprises a first elastic part and a second elastic part; the first elastic part is positioned between the fixed part and the vibrating diaphragm coil, two ends of the first elastic part are fixedly connected to the vibrating diaphragm coil, and the middle part of the first elastic part is fixedly connected to the fixed part; the second elastic piece is positioned between the fixed piece and the electromagnetic driving module, two ends of the second elastic piece are fixedly connected to the electromagnetic driving module, and the middle position of the second elastic piece is fixedly connected to the fixed piece, so that the magnetic circuit system, the diaphragm coil and the electromagnetic driving module form a modular structure; the magnetic circuit system is fixed on the middle frame, and the diaphragm coil is opposite to the first appearance part and is positioned in a magnetic field generated by the magnetic circuit system; the electromagnetic driving module is connected to the second appearance component and is positioned in a magnetic field generated by the magnetic circuit system, and a vibration gap is formed between the electromagnetic driving module and the magnetic circuit system; the electromagnetic driving module comprises a voice coil assembly, and the audio output method comprises the following steps:

when the electronic equipment acquires an audio file to be played, determining that one of the first appearance component and the second appearance component faces a user;

if the first appearance part faces towards the user, inputting audio current to the diaphragm coil according to the audio file, an

And if the second appearance component faces the user, inputting audio current to a voice coil assembly of the electromagnetic driving module according to the audio file.