Electroacoustic modules and electronic equipment

Abstract

The present application relates to an electroacoustic module and an electronic device, wherein the electroacoustic module comprises a shell, a first electroacoustic unit and a second electroacoustic unit. The shell is provided with a sound cavity with a variable volume, and the first electroacoustic unit and the second electroacoustic unit are respectively located in the sound cavity. In a first state, the first electroacoustic unit is used to generate sound when powered on to drive the second electroacoustic unit to passively generate sound. In a second state, the first electroacoustic unit and the second electroacoustic unit are respectively powered on to generate sound, and the volume of the sound cavity in the first state is different from the volume of the sound cavity in the second state. The above electroacoustic module can be applied to electronic devices, and the volume of the sound cavity of the shell is variable. The electroacoustic module can switch the working state according to the different volumes of the sound cavity to change the audio characteristics of the electroacoustic module, thereby improving the sound effect of the electronic device.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an electroacoustic module and an electronic equipment. Background Art

[0002] In the related art, scroll screen electronic devices (such as mobile phones) are generally equipped with dual speakers to obtain stereo effects, and the sound effects in the expanded and contracted states are the same. Compared with the contracted state, the display area of ​​the scroll screen electronic device in the expanded state is increased, and users have higher requirements for the audio-visual experience and gaming experience in the expanded state. Therefore, it is particularly important to improve the sound effects of the scroll screen electronic device in the expanded state. Summary of the invention

[0003] The embodiments of the present application provide an electro-acoustic module and an electronic device to improve the sound quality of the electronic device.

[0004] An electroacoustic module, comprising:

[0005] A housing, wherein the housing is provided with a sound cavity, and the volume of the sound cavity is variable;

[0006] A first electro-acoustic unit is located in the sound cavity; and

[0007] A second electro-acoustic unit is located in the sound cavity;

[0008] In the first state, the first electro-acoustic unit is used to generate sound when powered on to drive the second electro-acoustic unit to passively generate sound; in the second state, the first electro-acoustic unit and the second electro-acoustic unit are respectively powered on to generate sound, and the volume of the sound cavity in the first state is different from the volume of the sound cavity in the second state.

[0009] An electronic device, comprising:

[0010] A shell assembly, comprising a first shell and a second shell, wherein the second shell is slidably disposed on the first shell;

[0011] A flexible screen module, disposed on the shell assembly; and

[0012] In the electroacoustic module as described above, the shell is arranged in the shell assembly, and when the second shell slides relative to the first shell, at least part of the flexible screen module enters and exits the shell assembly, causing the volume of the sound cavity to change.

[0013] An electroacoustic module, comprising:

[0014] The housing comprises a first cover shell and a second cover shell which are spaced apart from each other, wherein the first cover shell is in communication with the second cover shell;

[0015] A first electro-acoustic unit is disposed in the first housing; and

[0016] The diaphragm is arranged in the second housing; during the movement of the second housing relative to the first housing, the volume of the space for sound reflection between the first electro-acoustic unit and the diaphragm is variable.

[0017] An electronic device, comprising:

[0018] A shell assembly, comprising a first shell and a second shell, wherein the second shell is slidably disposed on the first shell;

[0019] A flexible screen module, disposed on the shell assembly; and

[0020] As described above, the electroacoustic module, the shell is arranged in the shell assembly, and when the second shell slides relative to the first shell, at least part of the flexible screen module enters and exits the shell assembly, and the first cover shell moves relative to the second cover shell to change the volume of the sound cavity.

[0021] The above electroacoustic module and electronic device can be applied to electronic devices, and the volume of the sound cavity of the shell is variable. In the first state, the first electroacoustic unit is used to generate sound to drive the second electroacoustic unit to passively generate sound; in the second state, the first electroacoustic unit and the second electroacoustic unit are respectively energized to generate sound, and the volume of the sound cavity in the first state is different from the volume of the sound cavity in the second state. In other words, the electroacoustic module can switch the working state according to the different volumes of the sound cavity to change the audio characteristics of the electroacoustic module, thereby improving the sound effect of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a schematic diagram of an electronic device according to an embodiment, wherein the second housing is in a second position;

[0024] Figure 2 for Figure 1 A schematic diagram of another viewing angle of the electronic device shown;

[0025] Figure 3 for Figure 1 an exploded view of the electronic device shown;

[0026] Figure 4 for Figure 1 A schematic diagram of the electronic device shown, wherein the second housing is in a first position;

[0027] Figure 5 for Figure 4 A schematic diagram of another viewing angle of the electronic device shown;

[0028] Figure 6 for Figure 1 a front view of the electronic device shown;

[0029] Figure 7 for Figure 6 A cross-sectional view along AA of an embodiment of the electronic device shown;

[0030] Figure 8 for Figure 4 a front view of the electronic device shown;

[0031] Fig. 9 for Figure 8 A cross-sectional view along BB of an embodiment of the electronic device shown;

[0032] Fig.10 is a cross-sectional view of an electroacoustic module according to an embodiment, wherein the telescopic member is in an extended state;

[0033] Fig.11 for Fig.10 A cross-sectional view of the electroacoustic module shown, wherein the telescopic member is in a folded state;

[0034] Fig.12 for Figure 6 A cross-sectional view along AA of another embodiment of the electronic device shown;

[0035] Fig.13 for Figure 8 A cross-sectional view along BB of another embodiment of the electronic device shown;

[0036] Fig.14 Schematic diagram of the positional relationship between the electroacoustic module and the first shell and the second shell according to an embodiment, wherein the telescopic member is in an extended state;

[0037] Fig.15 It is a schematic diagram of the positional relationship between the electroacoustic module and the first shell and the second shell of an embodiment, wherein the telescopic member is in a folded state.

[0038] Reference numerals:

[0039] 100, electronic device 10, housing assembly 12, first housing

[0040] 14. Second shell 142, rear cover 16, receiving space

[0041] 20, flexible screen module 20a, fixed part 20b, free part

[0042] 30, guide member 40, electroacoustic module 41, housing

[0043] 41a, sound cavity 411, first housing 411a, first front cavity

[0044] 411b, first rear cavity 411c, first sound outlet 413, second housing

[0045] 413a, second front cavity 413b, second rear cavity 413c, second sound outlet

[0046] 415, telescopic member 415a, channel 43, first electroacoustic unit

[0047] 45. second electroacoustic unit 50. camera module 60. driving mechanism

[0048] 70, tensioning assembly 71, movable part S1, first electroacoustic module

[0049] S2, the second electroacoustic module DETAILED DESCRIPTION

[0050] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0051] As used herein, "electronic device" refers to a device that can receive and / or send communication signals, including but not limited to a device that is connected via any one or more of the following connection methods:

[0052] (1) Connection via wired lines, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection;

[0053] (2) Via wireless interfaces, such as cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, and AM-FM broadcast transmitters.

[0054] An electronic device configured to communicate via a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

[0055] (1) Satellite phone or cellular phone;

[0056] (2) Personal Communications System (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities;

[0057] (3) Radiotelephone, pager, Internet / intranet access, Web browser, notepad, calendar, Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0058] (4) conventional laptop and / or palmtop receivers;

[0059] (5) Conventional laptop and / or palmtop radio telephone transceivers, etc.

[0060] Please combine Figure 1 , Figure 2 and Figure 3 , the electronic device 100 of this embodiment includes a shell assembly 10, a flexible screen module 20 and a guide 30. The shell assembly 10 is a hollow structure, and the flexible screen module 20, the guide 30, etc. can be arranged in the shell assembly 10. The electronic device 100 may also include a circuit board (not shown), a battery (not shown) and an electroacoustic module 40, and the circuit board, the battery and the electroacoustic module 40 can all be arranged in the shell assembly 10. The circuit board can integrate the processor, power management module, storage unit and baseband chip of the electronic device 100. The electroacoustic module 40 is used to convert electrical signals into sound signals, for example, the electroacoustic module 40 can be used to play audio information. The flexible screen module 20 and the electroacoustic module 40 are both connected to the circuit board in communication, and the battery can power the flexible screen module 20, the electroacoustic module 40 and the electronic components on the circuit board. Of course, the electronic device 100 may also include a camera module 50, which is connected to the circuit board in communication, and the battery can power the camera module 50. It is understandable that the electronic device 100 of the embodiment of the present application includes but is not limited to terminal devices such as mobile phones and tablet computers or other portable electronic devices 100. In the embodiment of the present application, a mobile phone is taken as an example for description.

[0061] Combination Figure 3 , Figure 4 and Figure 5In the embodiment of the present application, the shell assembly 10 includes a first shell 12 and a second shell 14, and the second shell 14 and the first shell 12 can move relative to each other. Specifically, in the present embodiment, the second shell 14 and the first shell 12 are slidably connected. In other words, the second shell 14 can slide relative to the first shell 12. For example, one of the first shell 12 and the second shell 14 can be provided with a slide rail, and the other can slide along the slide rail, so that the end of the second shell 14 away from the first shell 12 and the end of the first shell 12 away from the second shell 14 can move towards each other or away from each other.

[0062] The second shell 14 can slide relative to the first shell 12 to a first position and a second position. Figure 4 When the second shell 14 is in the first position, the electronic device 100 can obtain a relatively large display area to improve the user experience of the electronic device 100; when the second shell 14 is in the second position (see Figure 1 ), the electronic device 100 has a relatively small size and is easy to carry. It is understandable that in the embodiments of the present application, the first position, the second position and similar expressions all refer to the relative position of the second shell 14 and the first shell 12. To simplify the expression, "the second shell 14 is in the first position" or "when in the first position" and similar expressions refer to the second shell 14 being in the first position relative to the first shell 12, and "the second shell 14 is in the second position" or "when in the second position" and similar expressions refer to the second shell 14 being in the second position relative to the first shell 12.

[0063] In this embodiment, the position of the end of the second shell 14 away from the first shell 12 and the position of the end of the first shell 12 away from the second shell 14 can be more clearly determined by taking the first position as a reference. Figure 4 For example, when the second shell 14 is in the first position, the leftmost side in the width direction of the electronic device 100 is the end of the second shell 14 away from the first shell 12, and the rightmost side in the width direction of the electronic device 100 is the end of the first shell 12 away from the second shell 14.

[0064] In this embodiment, when the second shell 14 is in the first position, the overall width of the electronic device 100 is greater than the width in the second position, so that the width dimension of the exposed flexible screen module 20 is variable. In other words, the size of the electronic device 100 in the width direction is variable. In this embodiment, the interface of the electronic device 100, such as a data cable jack, a charging cable jack, or a headphone jack, can be arranged at the end in the width direction. In other embodiments, when the second shell 14 is in the first position, the overall length of the electronic device 100 is greater than the length in the second position, so that the length dimension of the exposed flexible screen module 20 is variable. In other words, the size of the electronic device 100 in the length direction is variable. In this embodiment, the interface of the electronic device 100, such as a data cable jack, a charging cable jack, or a headphone jack, can be arranged at the end in the length direction.

[0065] See also Figure 6 and Figure 7 , the second shell 14 and the first shell 12 can form a receiving space 16 together. It is understandable that the receiving space 16 can change with the relative movement of the second shell 14 and the first shell 12. The receiving space 16 can be used to place electronic components such as guides 30, circuit boards, and batteries. The flexible screen module 20 may include a relatively arranged fixed portion 20a and a free portion 20b, and the fixed portion 20a is arranged on the first shell 12 and is relatively fixed to the position of the first shell 12. In the second position, the flexible screen module 20 bypasses the guide 30, and the free portion 20b of the flexible screen module 20 is accommodated in the shell assembly 10, so that part of the flexible screen module 20 is hidden in the shell assembly 10, and part of the flexible screen module 20 hidden in the shell assembly 10 may not be used for display. In other words, the movement of the first shell 12 relative to the second shell 14 can cause at least part of the free portion 20b to be unfolded in the second shell 14, or the free portion 20b unfolded in the second shell 14 can be retracted into the shell assembly 10.

[0066] It is understandable that in the embodiments of the present application, the positions of the two objects are relatively fixed, which means that the two objects cannot produce relative movement under normal circumstances. The two objects with relatively fixed positions can be physically directly connected, or indirectly connected through an intermediate structure. Taking the fixing portion 20a and the first shell 12 as an example, the positions of the fixing portion 20a and the first shell 12 are relatively fixed. The fixing portion 20a and the first shell 12 can be directly in contact, such as using threaded fasteners or clamping to achieve direct fixation of the fixing portion 20a and the first shell 12, or the fixing portion 20a can be indirectly fixed to the first shell 12 through structures such as an adhesive layer and an intermediate connecting plate.

[0067] It is understandable that the fixed portion 20a and the free portion 20b can be distinguished in the following manner: when the second shell 14 is in the second position relative to the first shell 12, the portion of the flexible screen module 20 exposed to the shell assembly 10 is the fixed portion 20a of the flexible screen module 20, and the portion of the flexible screen module 20 accommodated in the shell assembly 10 can be regarded as the free portion 20b. In some embodiments, when the second shell 14 is in the second position, the fixed portion 20a exposed to the outside of the shell assembly 10 is roughly rectangular, and its size can be 5 to 6 inches, which is equivalent to the size of the display screen of a general smart phone, so that the electronic device 100 is easy to carry and convenient to use.

[0068] Further, the second shell 14 may include a back cover 142, and the back cover 142 covers the free portion 20b of the flexible screen module 20 in the second position. The back cover 142 may be provided with a light-transmitting area, and the part of the flexible screen module 20 accommodated in the shell assembly 10 in the second position may also be used for display, so that the user can view the information displayed by the flexible screen module 20 from the light-transmitting area, thereby expanding the use scenario of the electronic device 100. For example, in this embodiment, the electronic device 100 does not need to be provided with a front camera, and a rear-mounted camera module 40 can be used to realize functions such as selfies and video calls. The light-transmitting area may be composed of transparent glass, or it may be formed by an opening of the back cover 142. After the second shell 14 slides to the first position relative to the first shell 12, at least part of the flexible screen module 20 accommodated in the shell assembly 10 is exposed. The exposed flexible screen module 20 can be used for display, so that the electronic device 100 has a relatively large display area to enhance the user experience.

[0069] See also Figure 8 and Fig. 9 In this embodiment, the guide 30 is disposed at one end of the second shell 14 away from the first shell 12. When the second shell 14 switches from the second position to the first position relative to the first shell 12, the guide 30 can guide the flexible screen module 20 to deform and unfold in the second shell 14. The guide 30 can limit the bending radius of the flexible screen module 20 within a suitable range to avoid damage to the flexible screen module 20 due to a too small bending radius. Of course, the guide 30 can also prevent the flexible screen module 20 from being too thick due to an excessively large bending radius, which may cause the thickness of the electronic device 100 to be too large.

[0070] like Fig. 9 As shown, in some embodiments, the guide member 30 may be a rotating shaft structure with convex teeth, and the flexible screen module 20 is linked to the guide member 30 by means of engagement or the like. When the second shell 14 slides relative to the first shell 12, the guide member 30 drives the part of the flexible screen module 20 engaged with the guide member 30 to move and unfold or retract into the shell assembly 10.

[0071] It is understandable that in other embodiments, the guide member 30 may also be a round shaft without teeth. In the process of switching the second shell 14 from the second position to the first position, the guide member 30 is used to open part of the flexible screen module 20 attached to the guide member 30, so that more flexible screen modules 20 are exposed to the outside of the shell assembly 10 and are in a flat state. In this embodiment, the guide member 30 can be rotatably arranged on the second shell 14. In the process of gradually unfolding the flexible screen module 20, the guide member 30 can rotate with the movement of the flexible screen module 20 to reduce the resistance encountered by the flexible screen module 20 during the unfolding process and reduce the wear of the contact part between the guide member 30 and the flexible screen module 20.

[0072] In other embodiments, the guide member 30 may also be fixed on the second shell 14, and the guide member 30 has a smooth surface. In the process of unfolding the flexible screen module 20 to the second shell 14, the guide member 30 can slidably contact the flexible screen module 20 through its smooth surface. In other words, in this embodiment, the guide member 30 can be integrally formed or welded with the second shell 14, and the guide member 30 can be regarded as a part of the second shell 14, and the free portion 20b of the flexible screen module 20 bypasses the end of the second shell 14 away from the first shell 12 and extends into the shell assembly 10.

[0073] In the process of switching the second shell 14 from the first position to the second position, the flexible screen module 20 can be driven to be retracted by the guide member 30, that is, the part of the flexible screen module 20 deployed in the second shell 14 is retracted into the shell assembly 10. Further, in some embodiments, the electronic device 100 may include a driving mechanism 60, which may be disposed in the shell assembly 10, and the driving mechanism 60 may be linked with the first shell 12 or the second shell 14 to drive the second shell 14 to move relative to the first shell 12, thereby driving the flexible screen module 20 to be deployed or retracted. It is understandable that the driving mechanism 60 may be omitted, and the user may directly move the second shell 14 and the first shell 12 relative to each other by manual operation or the like.

[0074] See also Figure 8 and Fig. 9The electronic device 100 may further include a tensioning assembly 70. The free portion 20b of the flexible screen module 20 is linked to the tensioning assembly 70. When the second shell 14 switches from the first position to the second position, the tensioning assembly 70 applies a tensile force to the free portion 20b. The supporting effect of the guide member 30 on the flexible screen module 20 can make the entire free portion 20b bear the tensile force, so that the free portion 20b can be smoothly retracted into the shell assembly 10, that is, the tensioning assembly 70 drives the flexible screen module 20 to reset. The tensioning assembly 70 can also be used to apply a tensile force to the free portion 20b when the flexible screen module 20 extends out of the shell assembly 10, so that the flexible screen module 20 can be smoothly unfolded to the second shell 14. After the flexible screen module 20 is retracted into the shell assembly 10, the electronic device 100 can obtain a relatively small external size to improve the portability of the electronic device 100.

[0075] In some embodiments, the tensioning assembly 70 is disposed in the shell assembly 10 and connected to the free portion 20b of the flexible screen module 20. The tensioning assembly 70 may include an elastic member (not shown) and a movable member 71, and the movable member 71 is rotatably connected to the second shell 14. The elastic member may be a torsion spring, one free end of which is connected to the second shell 14, and the other free end of the torsion spring is connected to the movable member 71, and the torsion spring is sleeved on the movable member 71. In the process of switching the second shell 14 between the first position and the second position relative to the first shell 12, the torsion spring is torsionally deformed and applies tension to the flexible screen module 20 through the movable member 71.

[0076] In the process of the flexible screen module 20 extending out of the shell assembly 10, that is, in the process of the second shell 14 switching from the second position to the first position, the free portion 20b of the flexible screen module 20 drives the movable part 71 to rotate relative to the second shell 14 to release the flexible screen module 20 wound on the movable part 71, and the elastic member accumulates elastic potential energy, and the tensile force applied by the movable part 71 to the flexible screen module 20 is resistance, so that the flexible screen module 20 can be smoothly unfolded on the second shell 14; in the process of the flexible screen module 20 retracting the shell assembly 10, that is, in the process of the second shell 14 switching from the first position to the second position, the elastic member releases elastic potential energy and drives the movable part 71 to reset, and the tensile force applied by the movable part 71 to the flexible screen module 20 is power, so that the flexible screen module 20 can smoothly retract the shell assembly 10, so that the free portion 20b is wound around the movable part 71. In other embodiments, the tensioning assembly 70 can also be connected to the first shell 12.

[0077] In other embodiments, the tensioning assembly 70 may have other structural forms. For example, the movable member 71 and the elastic member may be omitted, and the tensioning assembly 70 includes an elastic rope, which is connected to the first shell 12 or the second shell 14, and the elastic rope is connected to the free portion 20b, so that the elastic rope can be used to apply tension to the flexible screen module 20 during the movement of the second shell 14 relative to the first shell 12. For another example, in an embodiment in which the electronic device 100 includes a driving mechanism 60, the driving mechanism 60 can be connected to the movable member 71 of the tensioning assembly 70. In the process of the flexible screen module 20 extending out of the shell assembly 10, the transmission resistance of the driving mechanism 60 can be used to gradually release the flexible screen module 20 and apply tension to the flexible screen module 20, so that the flexible screen module 20 is smoothly unfolded in the second shell 14; in the process of the flexible screen module 20 retracting the shell assembly 10, the driving mechanism 60 drives the free portion 20b of the flexible screen module 20 to gradually wind around the movable member 71, so that the flexible screen module 20 is smoothly retracted into the shell assembly 10. In this embodiment, the driving mechanism 60 may be a motor, or a combination of a motor and a gear set.

[0078] It can be understood that in this embodiment, the first position and the second position can be regarded as two extreme positions of the second shell 14 moving relative to the first shell 12. In the first position, the display area of ​​the flexible screen module 20 reaches the maximum state. Under normal circumstances, the second shell 14 can no longer continue to move away from the first shell 12. In the second position, the display area of ​​the flexible screen module 20 reaches the minimum state. Under normal circumstances, the second shell 14 can no longer move toward the first shell 12. The first position and the second position can be achieved by providing a limiting structure on the second shell 14 or the first shell 12 or the guide member 30. For example, a spring can be provided on the second shell 14, and two slots can be provided on the first shell 12. In the first position, the spring is engaged with one of the slots, thereby realizing the positioning of the second shell 14 and the first shell 12 in the first position; in the second position, the spring is engaged with the other slot, thereby realizing the positioning of the second shell 14 and the first shell 12 in the second position.

[0079] It is understandable that multiple intermediate positions can be set between the first position and the second position to achieve the positioning of the second shell 14 relative to the first shell 12 at multiple intermediate positions, and enable the flexible screen module 20 to have different display areas at different intermediate positions, thereby expanding the use scenarios of the electronic device 100. Multiple intermediate positions can also be achieved by using a limiting structure, for example, the positioning of the second shell 14 relative to the first shell 12 at multiple intermediate positions can be achieved by the cooperation of a spring and a card slot.

[0080] refer to Fig.10 and Fig.11The electroacoustic module 40 of the electronic device 100 may include a housing 41, a first electroacoustic unit 43, and a second electroacoustic unit 45. The housing 41 is provided with a sound cavity 41a for reflecting sound, and the volume of the sound cavity 41a is variable. The first electroacoustic unit 43 and the second electroacoustic unit 45 are respectively arranged in the sound cavity 41a. The second electroacoustic unit 45 may include a diaphragm (not shown) and a coil (not shown), and the coil is used to drive the diaphragm to vibrate and make sound when powered on. The first electroacoustic unit 43 may also include another coil (not shown) and another diaphragm (not shown), and the other coil can drive the other diaphragm to vibrate and make sound when powered on.

[0081] The housing 41 may include a first housing 411, a second housing 413, and a telescopic member 415 connected between the first housing 411 and the second housing 413. The first electroacoustic unit 43 is disposed in the first housing 411, and the second electroacoustic unit 45 is disposed in the second housing 413. The first housing 411, the first electroacoustic unit 43, the telescopic member 415, the second housing 413, and the second electroacoustic unit 45 are enclosed together to form a sound cavity 41a. In other words, the telescopic member 415 has at least part of the sound cavity 41a, and one end of the telescopic member 415 is connected to the first housing 411, and the other end is connected to the second housing 413. The first housing 411 can be regarded as one end of the housing 41, and the second housing 413 can be regarded as the other end of the housing 41. The first housing 411 and the second housing 413 can move relatively far apart to stretch the telescopic member 415 and make the telescopic member 415 form a channel 415a for expanding the sound reflection space. The first housing 411 is connected to the second housing 413 through the channel 415a. The first module 41 and the second module 45 can also move relatively close to each other to compress the telescopic member 415 so that the volume of the channel 415a is reduced. The channel 415a is a part of the sound cavity 41a. Since the volume of the channel 415a is variable, that is, the space for sound reflection can be changed, the audio characteristics of the electroacoustic module 40 can be changed. Of course, in some embodiments, at least one of the first cover shell 411 and the second cover shell 413 can be omitted, the first electro-acoustic unit 43 can be fixedly connected to one end of the telescopic member 415, and the second electro-acoustic unit 45 can be fixedly connected to the other opposite end of the telescopic member 415. The telescopic deformation of the telescopic member 415 can change the volume of the sound cavity 41a for reflecting sound, thereby changing the audio characteristics of the electro-acoustic module 40.

[0082] In some embodiments, the first cover shell 411 is relatively fixed in position with one of the first shell 12, the second shell 14 and the free portion 20b, and the second cover shell 413 is relatively fixed in position with one of the remaining two of the first shell 12, the second shell 14 and the free portion 20b. For example, in some embodiments, the first cover shell 411 can be fixedly connected to the fixed portion 20a of the flexible screen module 20 or the first shell 12, so that the position of the first cover shell 411 is relatively fixed with the position of the fixed portion 20a, and the second cover shell 413 can be connected to the second shell 14 or the free portion 20b of the flexible screen module 20 to produce telescopic deformation during the movement of the second shell 14 relative to the first shell 12.

[0083] refer to Fig. 9 In other embodiments, the second cover shell 413 can be connected to the fixed part 20a of the flexible screen module 20 or the first shell 12 so that the positions of the second cover shell 413 and the first shell 12 are relatively fixed, and the first cover shell 411 can be fixedly connected to the second shell 14 or the free part 20b of the flexible screen module 20 to produce telescopic deformation when the second shell 14 moves relative to the first shell 12.

[0084] Of course, reference Fig.12 and Fig.13 In other embodiments, one of the second cover shell 413 and the first cover shell 411 can be connected to the second shell 14 to achieve relative fixation with the second shell 14, and the other of the second cover shell 413 and the first cover shell 411 can be connected to the free portion 20b of the flexible screen module 20 and fixed relative to the position of the free portion 20b, so that the telescopic member 415 can produce telescopic deformation during the movement of the second shell 14 relative to the first shell 12, thereby changing the volume of the sound cavity 41a for reflecting sound, which will not be repeated here.

[0085] In the process of the second shell 14 switching from the second position to the first position relative to the first shell 12, that is, in the process of the free portion 20b gradually extending out of the shell assembly 10, the first cover 411 and the second cover 413 move away from each other, and the telescopic member 415 is stretched to form a channel 415a for expanding the sound reflection space. The first electroacoustic unit 43 can be electrically connected to the circuit board of the electronic device 100. Under the condition that other conditions remain unchanged, the volume of the cavity for sound reflection can directly determine the low-frequency resonance frequency of the electroacoustic module 40, and the larger the volume of the cavity for resonance, the smaller the low-frequency resonance frequency, that is, the better the low-frequency performance. Therefore, after the telescopic member 415 is stretched and the channel 415a is formed, the space for reflecting sound can be increased, the low-frequency frequency response of the electroacoustic module 40 is improved, and the low-frequency sound emitted by the electroacoustic module 40 increases, so that the electroacoustic module 40 can have a better low-frequency effect, that is, the electronic device 100 has a better sound quality, that is, the sound effect of the electroacoustic module 40 and the electronic device 100 is improved.

[0086] In the process of the second shell 14 switching from the first position to the second position relative to the first shell 12, that is, in the process of the free portion 20b deployed in the second shell 14 gradually retracting into the shell assembly 10, the first cover shell 411 and the second cover shell 413 move relatively close to each other, the telescopic member 415 is compressed, the volume of the channel 415a is reduced, the space for reflecting sound is reduced, and the low-frequency frequency response of the electroacoustic module 40 decreases accordingly. In other words, in the process of the second shell 14 moving relative to the first shell 12, the audio characteristics of the electroacoustic module 40 can change with the deployment area of ​​the flexible screen module 20, thereby improving the sound effect of the electronic device 100.

[0087] In the related art, the volume of the back cavity for reflecting sound of the electroacoustic module 40 (such as a speaker) of an electronic device 100 such as a smartphone is generally fixed. For example, the volume of the back cavity of the electroacoustic module 40 generally used for the electronic device 100 is in the range of 0.6 cubic centimeters to 1 cubic centimeter. When the electroacoustic module 40 is used to play audio, the sound quality of the external speaker cannot reach a high level due to the volume of the back cavity. In the present embodiment, the telescopic deformation of the telescopic member 415 can change the space for reflecting sound, so the external sound quality of the electroacoustic module 40 can be adaptively adjusted according to the display area of ​​the flexible screen module 20 to expand the use scenario of the electroacoustic module 40. For example, when the display area of ​​the electronic device 100 is large (for example, playing games or watching movies), the channel 415a formed by the extended telescopic member 415 can make the electroacoustic module 40 have relatively good low-frequency performance to improve the user experience, and make the sound quality of the electroacoustic module 40 match the picture displayed by the flexible screen module 20, that is, achieve sound and picture matching, so that the volume of the electroacoustic module 40 can be increased or a better sound field balance can be achieved. When the display area of ​​the electronic device 100 is small (for example, viewing information, browsing the web, etc.), the volume of the channel 415a of the telescopic member 415 is reduced, and the volume of the channel 415a can even be reduced to close to 0, so as to reduce the low-frequency performance of the electroacoustic module 40 and achieve sound and picture matching again.

[0088] In the above-mentioned electronic device 100, the second shell 14 can move relative to the first shell 12 to drive the flexible screen module 20 to be unfolded in the second shell 14 or retracted into the shell assembly 10. When the flexible screen module 20 is unfolded in the second shell 14, the electronic device 100 can obtain a relatively large display area to improve the user experience, and the telescopic member 415 stretches and forms a channel 415a for expanding the sound reflection space. The channel 415a, as a variable part of the sound cavity 41a, can change the audio characteristics of the electroacoustic module 40 and improve the sound effect of the electroacoustic module 40; after the flexible screen module 20 unfolded in the second shell 14 is retracted into the shell assembly 10, the electronic device 100 can obtain a relatively small external size to have relatively good portability, and the volume of the channel 415a is correspondingly reduced, so the audio characteristics of the electroacoustic module 40 are also changed accordingly. The electroacoustic module 40 of the above-mentioned electronic device 100 can adjust the audio characteristics according to the size of the display area of ​​the flexible screen module 20, that is, adjust the audio characteristics of the electroacoustic module 40 according to different usage scenarios, thereby expanding the usage scenarios of the electroacoustic module 40.

[0089] In the above embodiment, the first housing 411 and the second housing 413 may both be rectangular boxes, one end of the telescopic member 415 is sealed and connected to the first housing 411, and the other opposite end of the telescopic member 415 is sealed and connected to the second housing 413, thereby ensuring the airtightness of the channel 415a formed by the telescopic member 415 and the first housing 411 and the second housing 413, preventing sound leakage at the connection between the telescopic member 415 and the first housing 411 or the connection between the telescopic member 415 and the second housing 413, so as to obtain better reflection and resonance effects and improve the low-frequency performance of the electroacoustic module 40. In other embodiments, the first housing 411 and the second housing 413 may have other shapes such as cylindrical shapes.

[0090] This application takes the example that one of the first cover shell 411 and the second cover shell 413 is connected to the first shell 12, and the other of the first cover shell 411 and the second cover shell 413 is connected to the second shell 14. This structural setting is conducive to the assembly of the first cover shell 411 and the second cover shell 413 in the shell assembly 10. For example, the first cover shell 411 can be fixedly connected to the first shell 12 by means of threaded connection, bonding, or welding, and the second cover shell 413 can be fixedly connected to the second shell 14 by means of threaded connection, bonding, or welding. Compared with the structure in which the first cover shell 411 or the second cover shell 413 is fixedly connected to the free part 20b and can move with the free part 20b, the above embodiment can avoid bending deformation of the telescopic part 415 and reduce its fatigue life, can ensure the service life of the electroacoustic module 40, and reduce the difficulty of assembly.

[0091] In the implementation manner of the present application, the telescopic member 415 may be a silicone member, a rubber member, or a plastic member, and a fold is formed on the telescopic member 415 to guide the deformation of the telescopic member 415 . Fig.11 The electroacoustic module 40 shown corresponds to the state in which the second shell 14 is in the second position, and a geometric plane passing through the central axis of the telescopic member 415 is formed, and the cross section formed by the intersection of the geometric plane and the telescopic member 415 is roughly in the shape of a broken line. Of course, the cross section formed by the intersection of the geometric plane and the telescopic member 415 can also be wavy. After the flexible screen module 20 unfolded in the second shell 14 is retracted into the shell assembly 10, that is, when the second shell 14 is in the second position, the telescopic member 415 is compressed to a folded state by the first cover shell 411 and the second cover shell 413.

[0092] The folding of the telescopic member 415 can be achieved by guiding the crease, so that the telescopic deformation of the telescopic member 415 is controllable and prevents interference with other components inside the electronic device 100. When the telescopic member 415 is folded between the first cover 411 and the second cover 413, the thickness of the telescopic member 415 can be small. For example, the length of the telescopic member 415 in the second position in its telescopic direction (i.e., the moving direction of the second shell 14 relative to the first shell 12) can be less than 5 mm, and the volume of the channel 415a formed by the telescopic member 415 can also be close to 0.

[0093] Of course, it is understandable that the fold is not necessary. The setting that the volume of the channel 415a can be close to 0 in the second position is not necessary, that is, the channel 415a can always exist between the first position and the second position and between the first position and the second position, and the first housing 411 is always connected to the second housing 413 through the channel 415a, and the channel 415a can always be used for sound reflection and resonance.

[0094] In some embodiments, in the second position, the first cover 411 and the second cover 413 may abut against each other. In the folded state, the air in the housing 41 may flow between the diaphragm of the first electroacoustic unit 43 and the diaphragm of the second electroacoustic unit 45. In other words, the telescopic member 415 in the folded state may have a cavity so that a fluid (e.g., gas) may flow between the diaphragm of the first electroacoustic unit 43 and the diaphragm of the second electroacoustic unit 45.

[0095] In the embodiment where the channel 415a always exists, when the telescopic member 415 is in the folded state, that is, when the second shell 14 is in the second position, the first electroacoustic unit 43 is powered on to generate sound, and the air in the telescopic member 415 vibrates along with the diaphragm of the first electroacoustic unit 43. Since the air in the shell 41 can flow between the diaphragm of the first electroacoustic unit 43 and the diaphragm of the second electroacoustic unit 45, the diaphragm of the second electroacoustic unit 45 can be driven by the vibrating air to vibrate, thereby driving the air outside the second cover 413 to vibrate and generate sound.

[0096] In this embodiment, one of the first electroacoustic unit 43 and the second electroacoustic unit 45 can be used as the main sound-generating device, and the coil of the other one does not need to be energized, that is, the diaphragm of the other one can be used as a passive radiation membrane and used for sound generation, so as to improve the low-frequency performance of the electroacoustic module 40 in the second position. For example, in this embodiment, it can be considered that the relative movement of the first housing 411 and the second housing 413 can realize the switching of the electroacoustic module 40 between the first state and the second state, and change the volume of the sound cavity 41a for sound reflection between the first electroacoustic unit 43 and the second electroacoustic unit 45453 during the relative movement. In the first state, the coil of the first electroacoustic unit 43 can be energized to realize the sound generation of the first electroacoustic unit 43, the coil of the second electroacoustic unit 45 is in a power-off state, and the diaphragm of the second electroacoustic unit 45 passively generates sound. In the second state, the coil of the first electroacoustic unit 43 and the coil of the second electroacoustic unit 45 are energized respectively to realize the sound generation of the first electroacoustic unit 43 and the second electroacoustic unit 45. The volume of the sound cavity 41a in the first state is different from the volume of the sound cavity 41a in the second state, so the audio characteristics of the electroacoustic module 40 in the first state and the audio characteristics of the electroacoustic module 40 in the second state can be significantly different to adapt to the use state of the electronic device 10.

[0097] Of course, it is understandable that the coil of the second electro-acoustic unit 45 can be omitted. In other words, the second electro-acoustic unit 45 can be omitted, and a diaphragm can be arranged in the second housing 413 for passive sound generation.

[0098] Continue reading Fig.10 and Fig.11 In some embodiments, the first electroacoustic unit 43 and the first housing 411 form a first front cavity 411a and a first rear cavity 411b that are separated from each other. The second electroacoustic unit 45 and the second housing 413 form a second front cavity 413a and a second rear cavity 413b that are separated from each other. The first rear cavity 411b can be connected to the second rear cavity 413b through the telescopic member 415. The first rear cavity 411b, the second rear cavity 413b and the channel 415a of the telescopic member 415 together constitute a sound cavity 41a with a variable volume. In the embodiment where the second electroacoustic unit 45 is omitted and the second housing 413 is equipped with a diaphragm for passive sound generation, it can be simply understood that the diaphragm and the second housing 413 form a second front cavity 413a and a second rear cavity 413b that are separated from each other. For the first electroacoustic unit 43, it can also be simply understood that the other diaphragm of the first electroacoustic unit 43 forms a first front cavity 411a and a first rear cavity 411b that are separated from each other with the first housing 411.

[0099] In other words, in the embodiment where the channel 415a of the telescopic member 415 in the folded state allows the fluid to flow between the diaphragm of the first electroacoustic unit 43 and the diaphragm of the second electroacoustic unit 45, the first rear cavity 411b is always connected to the second rear cavity 413b through the telescopic member 415. During the switching of the electronic device 100 between the first position and the second position, the telescopic member 415 undergoes telescopic deformation, and the channel 415a formed for reflecting sound also changes accordingly, that is, the volume of the sound cavity 41a is variable, so that the audio characteristics (frequency, loudness, etc.) of the electroacoustic module 40 can change with the unfolding area of ​​the flexible screen module 20, thereby achieving sound and picture matching, so as to improve the sound effect of the electronic device 100 and enhance the user experience.

[0100] In other embodiments, the telescopic member 415 can separate the diaphragm of the first electroacoustic unit 43 from the diaphragm of the second electroacoustic unit 45 when in the folded state. In other words, in this embodiment, the telescopic member 415 in the folded state can isolate the diaphragm of the first electroacoustic unit 43 from the diaphragm of the second electroacoustic unit 45. The telescopic member 415 in the folded state can form a cavity with the diaphragm of the first electroacoustic unit 43 for sound reflection, and the telescopic member 415 in the folded state can form another cavity with the diaphragm of the second electroacoustic unit 45 for sound reflection. The two cavities are separated by the telescopic member 415, thereby reducing the mutual influence between the first electroacoustic unit 43 and the second electroacoustic unit 45, and simplifying the control scheme of the electroacoustic module 40.

[0101] It is understandable that, corresponding to the implementation in which at least one of the first housing 411 and the second housing 413 can be omitted, at least one of the first rear cavity 411b and the second rear cavity 413b can be omitted. For example, in the implementation in which the first housing 411 is omitted, the first electroacoustic unit 43 can be connected to one end of the telescopic member 415, and the first rear cavity 411b therefore does not exist. In the implementation in which the telescopic member 415 in the folded state separates the diaphragm of the first electroacoustic unit 43 from the diaphragm of the second electroacoustic unit 45, the telescopic member 415 can form a cavity to serve as the rear cavity of the first electroacoustic unit 43 and for sound reflection. For another example, in the implementation in which the first rear cavity 411b is omitted and the telescopic member 415 in the folded state allows air to flow between the diaphragm of the first electroacoustic unit 43 and the diaphragm of the second electroacoustic unit 45, the channel 415a and the second rear cavity 413b formed by the telescopic member 415 can serve as the rear cavity of the first electroacoustic unit 43 for sound reflection. When the second rear cavity 413b is missing, the structural design of the electroacoustic module 40 can refer to the above solution, which will not be repeated here. In particular, in the embodiment where both the first rear cavity 411b and the second rear cavity 413b are missing, the telescopic member 415 can be used to form a channel 415a for sound reflection to play the role of the rear cavity. This embodiment can simplify the structure of the electroacoustic module 40 and reduce the volume and occupied space of the electroacoustic module 40.

[0102] Further, in the above-mentioned embodiment, the setting of the first housing 411 and the second housing 413 can also be used as a trigger signal for the second position. For example, in an embodiment in which the electronic device 100 includes a drive mechanism 60, the electronic device 100 may include a distance sensor (such as a pressure sensor, a Hall sensor or a photoelectric sensor), and the drive mechanism 60 and the distance sensor (not shown) are both connected to the processor for communication. The distance sensor is connected to at least one of the first housing 411 and the second housing 413 and is used to detect the distance between the first housing 411 and the second housing 413. The processor is configured to determine whether the distance between the first housing 411 and the second housing 413 is less than a preset value. When the distance is less than the preset value, the processor responds to the detection signal and disconnects the control circuit of the drive mechanism 60. In other words, when the distance between the first housing 411 and the second housing 413 is less than the preset value, the distance sensor can generate a trigger signal for disconnecting the control circuit of the drive mechanism 60, thereby protecting the electronic components or other structures inside the electronic device 100.

[0103] Of course, the distance sensor (such as a Hall sensor or a photoelectric sensor) of the electronic device 100 can also be used to generate a trigger signal to switch the working state of the electroacoustic module 40. For example, the distance sensor can detect the distance between the first housing 411 and the second housing 413, that is, it is used to detect the distance between the first housing 411 and the second housing 413. The processor is configured to control the electroacoustic module 40 to work in the first state, that is, the first electroacoustic unit 43 is powered on to make a sound, and the second electroacoustic unit 45 is powered off, but the diaphragm of the second electroacoustic unit 45 passively makes a sound; if the distance between the two is greater than or equal to the preset value (such as the first position), the electroacoustic module 40 is controlled to work in the second state, that is, the first electroacoustic unit 43 and the second electroacoustic unit 45 are both powered on to make a sound.

[0104] Of course, in the embodiment where the electronic device 100 manually drives the second shell 14 to move relative to the first shell 12, the first cover shell 411 and the second cover shell 413 can also be used to abut against each other to limit the second shell 14 relative to the first shell 12, so as to protect the electronic components or other structures inside the electronic device 100. This setting method can save the number of sensors and simplify the arrangement of sensors in the electronic device 100, and can also simplify the positioning structure of the first shell 12 and the second shell 14, thereby improving the compactness of the layout of the internal components of the electronic device 100.

[0105] In some embodiments, two electroacoustic modules 40 are arranged at intervals in a direction perpendicular to the movement direction of the first shell 12 relative to the second shell 14, wherein one electroacoustic module 40 is arranged at one end of the flexible screen module 20, and the other electroacoustic module 40 is arranged at the other end opposite to the flexible screen module 20. In other words, in this embodiment, one electroacoustic module 40 is arranged on one side of the movement direction of the second shell 14 relative to the first shell 12, and the other electroacoustic module 40 is arranged on the other side opposite to the movement direction of the second shell 14 relative to the first shell 12. In the process of switching the second shell 14 between the first position and the second position relative to the first shell 12, the first cover shell 411 and the second cover shell 413 of each electroacoustic module 40 can move relatively close to each other and relatively away from each other, thereby changing the size of the channel 415a formed by the telescopic member 415, and then changing the audio characteristics of the electroacoustic module 40.

[0106] Specifically, refer to Fig.14 and Fig.15 , the two electroacoustic modules 40 can be divided into a first electroacoustic module S1 and a second electroacoustic module S2, and in the present embodiment, the first housing 411 of the first electroacoustic module S1 and the first housing 411 of the second electroacoustic module S2 are both relatively fixed to the position of the second shell 14, and the second housing 413 of the first electroacoustic module S1 and the second housing 413 of the second electroacoustic module S2 are both relatively fixed to the position of the first shell 12. In other words, the first electroacoustic module S1 and the second electroacoustic module S2 can be arranged axially symmetrically with respect to the moving direction of the second shell 14 relative to the first shell 12. Of course, this axially symmetrical arrangement is not necessary.

[0107] Further, in the present embodiment, the first housing 411 is provided with a first sound outlet 411c connected to the first front cavity 411a, and the second housing 413 is provided with a second sound outlet 413c connected to the second front cavity 413a, and the first sound outlet 411c and the second sound outlet 413c are arranged on the same side of the electroacoustic module 40. Further, the first sound outlet 411c and the second sound outlet 413c of the first electroacoustic module S1 are both arranged at the end of the shell assembly 10 facing away from the second electroacoustic module S2, and the first sound outlet 411c and the second sound outlet 413c of the second electroacoustic module S2 are both arranged at the end of the shell assembly 10 facing away from the first electroacoustic module S1, that is, the sound emitting directions of the two electroacoustic modules 40 are arranged opposite to each other. For example, in the present embodiment, the first sound outlet 411c and the second sound outlet 413c of one of the electroacoustic modules 40 are oriented toward the bottom of the electronic device 100, so that the electronic device 100 can emit sound from the bottom. The first sound outlet 411c and the second sound outlet 413c of the other electroacoustic module 40 face the top of the electronic device 100, so that the electronic device 100 can emit sound from the top. Fig. 9When the second shell 14 moves to the first position relative to the first shell 12, the combination of the first electroacoustic module S1 and the second electroacoustic module S2 can obtain a better stereo effect to enhance the user experience. Figure 7 When the second shell 14 moves to the second position relative to the first shell 12, the above structural arrangement can also enable the electro-acoustic module 40 to have a relatively good stereo effect.

[0108] Further, in some embodiments, the electronic device 100 may include an angle sensor (not shown), which is connected to the second shell 14 and the guide 30 to detect the rotation angle of the guide 30. The angle sensor and the electroacoustic module 40 are both connected to the processor of the electronic device 100 for communication, and the processor is used to control the external parameters of the electroacoustic module 40 according to the rotation angle. Specifically, taking the movement of the second shell 14 from the second position to the first position relative to the first shell 12 as an example, the angle sensor can use a Hall sensor or a photoelectric encoder to measure the rotation angle of the guide 30. According to the rotation angle of the guide 30, the length of the flexible screen module 20 unfolded in the second shell 14 can be calculated, and then the length of the extension of the telescopic member 415 can be calculated, and then the volume of the channel 415a of the telescopic member 415 can be calculated. Taking the example that the first cover shell 411 has a first rear cavity 411b, the second cover shell 413 has a second rear cavity 413b, and the second cover shell 413 is provided with a second electro-acoustic unit 45, the frequency characteristics of the sound of the electro-acoustic module 40 can be calculated according to the volume of the channel 415a and the volumes of the first rear cavity 411b and the second rear cavity 413b, or the relationship curve between the audio characteristics of the electro-acoustic module 40 and the relative position of the second shell 14 can be obtained, and then the sound characteristics of the first electro-acoustic unit 43 and the second electro-acoustic unit 45 (such as parameters such as frequency and loudness of the sound) can be adaptively adjusted to obtain a better external speaker effect.

[0109] Exemplarily, in the first position, the first electroacoustic unit 43 and the second electroacoustic unit 45 can use the same external speaker parameters; in the second position, the first electroacoustic unit 43 can be controlled to output one of the left channel and the right channel, and the second electroacoustic unit 45 can be controlled to output the other of the left channel and the right channel, so that the electronic device 100 in the first position and the second position has significantly different sound effects, so as to enhance the audio experience of the electronic device 100. Exemplarily, during normal use, when the second shell 14 is in the first position, the user can hold the second shell 14 with the left hand and the first shell 12 with the right hand, and the first electroacoustic unit 43 can output the right channel, and the second electroacoustic unit 45 can output the left channel, so that better sound effects can be obtained.

[0110] In an embodiment in which the first cover shell 411 is provided with a first electroacoustic unit 43 and the second cover shell 413 is provided with a second electroacoustic unit 45, when the second shell 14 is in the second position, compared with the first position, the distance between the first electroacoustic unit 43 and the second electroacoustic unit 45 is relatively small, the distance between the two sound sources is small, and the width of the radiation is also relatively small. When the external sound parameters (frequency, loudness, etc.) are the same, the sound field formed by the sound of the first electroacoustic unit 43 and the sound of the second electroacoustic unit 45 can produce a significant improvement in the sound loudness. When the second shell 14 is in the first position, compared with the second position, the distance between the first electroacoustic unit 43 and the second electroacoustic unit 45 is relatively large, the distance between the two sound sources is large, and the width of the radiation is also relatively large. When the external sound parameters (frequency, loudness, etc.) are the same, the sound field formed by the sound of the first electroacoustic unit 43 and the sound of the second electroacoustic unit 45 is significantly expanded in width. In other words, the electronic device 100 of the present application can produce significantly different audio experiences when the second shell 14 is in the first position and the second position, that is, the electronic device 100 can obtain an audio experience that matches the form and obtain better sound effects.

[0111] In an embodiment in which a plurality of intermediate positions are provided between the first position and the second position, different external speaker parameters can be set according to different positions to achieve different external speaker effects at different positions, thereby enriching the use scenarios of the electroacoustic module 40. Furthermore, the length of the extended shell assembly 10 of the flexible screen module 20 can be divided into intervals, and the external speaker parameters of the electroacoustic module 40 can be set according to the length interval combined with the volume of the channel 415a, the first rear cavity 411b, and the second rear cavity 413b. When the extended length of the flexible screen module 20 is in a certain interval, the processor can directly set the external speaker parameters of the electroacoustic module 40 to the external speaker parameters corresponding to the interval.

[0112] In the above configuration, when there is no intermediate position or fewer intermediate positions between the first position and the second position, that is, when the unfolded area of ​​the flexible screen module 20 has greater randomness, the external speaker parameters of the electroacoustic module 40 can still be well matched with the display area of ​​the flexible screen module 20, thereby achieving better sound and picture matching and improving the user experience. Moreover, this control method of dividing the intervals can also avoid the processor from frequently adjusting the sound characteristics of the electroacoustic module 40, thereby ensuring the service life of the electroacoustic module 40. In other embodiments, other sensors such as photoelectric sensors can also be used to directly or indirectly measure the unfolded length of the flexible screen module 20, and then adaptively adjust the external speaker parameters of the electroacoustic module 40, which will not be repeated here.

[0113] In some embodiments, the electronic device 100 includes a power amplifier drive unit (not shown), and the first electroacoustic module S1 and the second electroacoustic module S2 are both communicatively connected to the power amplifier drive unit. For example, the performance parameters of the first electroacoustic module S1 and the second electroacoustic module S2 can be the same, and can be communicatively connected to the same intelligent power amplifier drive unit, thereby saving the number of power amplifier drive units, saving device costs, and saving the space occupied by the power amplifier drive unit to improve the compactness of the device layout and facilitate the lightweight design of the electronic device 100. Further, in this embodiment, when the second shell 14 moves to the first position, the second position, or the middle position relative to the first shell 12, the first electroacoustic module S1 and the second electroacoustic module S2 can use the same external speaker parameters, while improving the sound effect of the electronic device 100, reducing the difficulty of software configuration and reducing the probability of error.

[0114] In other embodiments, the electronic device 100 includes two power amplifier drive units, and both power amplifier drive units can be intelligent power amplifier drive units. One of the power amplifier drive units is communicatively connected to the first electroacoustic module S1, and the other power amplifier drive unit is communicatively connected to the second electroacoustic module S2. The structural parameters and performance parameters of the first electroacoustic module S1 and the second electroacoustic module S2 can be the same. In this embodiment, when the second shell 14 moves to the first position, the second position or the middle position relative to the first shell 12, the first electroacoustic module S1 and the second electroacoustic module S2 can adopt different external speaker parameters to improve the sound effect of the electronic device 100.

[0115] In other embodiments, the first electroacoustic unit 43 and the second electroacoustic unit 45 of the first electroacoustic module S1, and the first electroacoustic unit 43 and the second electroacoustic unit 45 of the second electroacoustic module S2 are respectively provided with power amplifier drive units and can be independently controlled. In other words, in this embodiment, the first electroacoustic unit 43 and the second electroacoustic unit 45 of each electroacoustic module 40 can be provided with an intelligent power amplifier drive unit, and the first electroacoustic unit 43 and the second electroacoustic unit 45 can be independently controlled and output four-channel audio signals to obtain a surround sound effect. Exemplarily, when the first electroacoustic module S1 and the second electroacoustic module S2 are in working state, the audio signals can be output in four channels (two first electroacoustic units 43 and two second electroacoustic units 45), and a better surround sound effect can be achieved through the phase difference of the four-channel audio signals.

[0116] It is understandable that in the embodiment of the present application, the structural parameters and performance parameters of the first electroacoustic unit 43 and the second electroacoustic unit 45 may be the same. In other words, the definition of "first" and "second" is for the convenience of describing the scheme, and should not be understood as the structural parameters and performance parameters of the first electroacoustic unit 43 and the second electroacoustic unit 45 are necessarily different. For example, in the embodiment of the present application, the "first electroacoustic unit 43" can also be regarded as the "second electroacoustic unit 45", and the "second electroacoustic unit 45" can also be regarded as the "first electroacoustic unit 43".

[0117] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0118] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An electroacoustic module, characterized in that: include: A housing, wherein the housing is provided with a sound cavity, and the volume of the sound cavity is variable; A first electroacoustic unit, located in the sound cavity; and A second electro-acoustic unit is located in the sound cavity; In the first state, the first electro-acoustic unit is used to generate sound when powered on to drive the second electro-acoustic unit to passively generate sound; in the second state, the first electro-acoustic unit and the second electro-acoustic unit are respectively powered on to generate sound, and the volume of the sound cavity in the first state is different from the volume of the sound cavity in the second state.

2. The electroacoustic module according to claim 1, characterized in that: The shell includes a telescopic member, the telescopic member has at least a portion of the sound cavity, and the telescopic member is used for telescopic deformation to make the volume of the sound cavity variable.

3. The electroacoustic module according to claim 2, characterized in that: The shell includes a first cover shell and a second cover shell, the first cover shell is connected to one end of the telescopic member, the second cover shell is connected to the other opposite end of the telescopic member, the first electro-acoustic unit is arranged in the first cover shell, and the second electro-acoustic unit is arranged in the second cover shell; the first cover shell, the first electro-acoustic unit, the telescopic member, the second cover shell, and the second electro-acoustic unit together enclose the sound cavity.

4. The electroacoustic module according to claim 3, characterized in that: When the first cover shell and the second cover shell move relatively away from each other, the telescopic member stretches and forms a channel for expanding the sound reflection space; when the first cover shell and the second cover shell move relatively close to each other, the telescopic member contracts to reduce the size of the channel.

5. The electroacoustic module according to claim 3, characterized in that: The first electro-acoustic unit and the first cover form a first front cavity and a first rear cavity that are separated from each other; the second electro-acoustic unit and the second cover form a second front cavity and a second rear cavity that are separated from each other, the first rear cavity is connected to the second rear cavity through the telescopic part, and the sound cavity includes the first rear cavity and the second rear cavity.

6. The electroacoustic module according to any one of claims 1 to 5, characterized in that: The second electroacoustic unit includes a diaphragm and a coil; in a first state, the coil is powered off, and the first electroacoustic unit drives the diaphragm to vibrate and produce sound; in a second state, the coil is powered on to drive the diaphragm to vibrate and produce sound.

7. An electronic device, characterized in that: include: A shell assembly, comprising a first shell and a second shell, wherein the second shell is slidably disposed on the first shell; A flexible screen module, arranged on the shell assembly; and According to the electroacoustic module as described in any one of claims 1-6, the shell is arranged in the shell assembly, and in the process of the second shell sliding relative to the first shell, at least a part of the flexible screen module enters and exits the shell assembly, and the volume of the sound cavity is changed.

8. The electronic device according to claim 7, characterized in that: The flexible screen module includes a fixed part and a free part that are relatively arranged, the fixed part is connected to the first shell, and the free part can enter and exit the shell assembly; one end of the shell is relatively fixed to the position of the first shell, the second shell and one of the free part, and the other end of the shell is relatively fixed to the position of the first shell, the second shell and one of the remaining two of the free part.

9. The electronic device according to claim 8, characterized in that: One end of the shell is fixedly connected to one of the first shell and the second shell, and the other opposite end of the shell is fixedly connected to the other of the first shell and the second shell.

10. The electronic device according to claim 9, characterized in that: In a direction perpendicular to the movement of the first shell relative to the second shell, two electroacoustic modules are arranged at intervals, one of the electroacoustic modules is arranged at one end of the flexible screen module, and the other electroacoustic module is arranged at the other opposite end of the flexible screen module.

11. The electronic device according to claim 10, characterized in that: The sound output directions of the two electro-acoustic modules are arranged opposite to each other.

12. The electronic device according to claim 10, characterized in that: Includes any of the following options: The electronic device comprises a power amplifier driving unit, and the two electro-acoustic modules are both communicatively connected to the power amplifier driving unit; The electronic device comprises two power amplifier drive units, and the two power amplifier drive units correspond to the two electro-acoustic modules one by one and are communicatively connected; The two first electro-acoustic units and the two second electro-acoustic units are respectively provided with power amplifier driving units and can be independently controlled.

13. The electronic device according to claim 7, characterized in that: The electronic device includes a guide, an angle sensor and a processor. The guide is rotatably connected to the end of the second shell away from the first shell. The flexible screen module bypasses the guide. The angle sensor is connected to the second shell and the guide to detect the rotation angle of the guide. The angle sensor, the first electroacoustic unit and the second electroacoustic unit are all communicatively connected to the processor. The processor is used to control the external sound parameters of the first electroacoustic unit and the second electroacoustic unit according to the rotation angle.

14. The electronic device according to claim 7, characterized in that: The electronic device includes a distance sensor, a driving mechanism, and a processor, wherein the distance sensor and the driving mechanism are both connected to the processor for communication, the distance sensor is connected to at least one of the first shell and the second shell and is used to detect a sliding distance of the second shell relative to the first shell, and the driving mechanism is used to drive the first shell to move relative to the second shell; the processor is configured to: If the distance is less than a preset value, controlling the electroacoustic module to operate in a first state; If the distance is greater than or equal to a preset value, the electroacoustic module is controlled to operate in a second state.

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