Speakers and electronic devices

Abstract

The present application relates to a loudspeaker and an electronic device. The loudspeaker includes a first cover, a second cover and an electroacoustic module. The first cover has a storage space. The second cover is slidably fitted with the first cover for entering and exiting the storage space, and changes the volume of the space enclosed by the first cover and the second cover during the process of entering and exiting the storage space. The electroacoustic module is provided in at least one of the first cover and the second cover. The above loudspeaker can be applied to electronic devices. Since the second cover is slidably fitted with the first cover for entering and exiting the storage space, and changes the volume of the space enclosed by the first cover and the second cover during the process of entering and exiting the storage space, the electronic device can drive the second cover to slide relative to the first cover to enter and exit the storage space, so as to change the sound reflection space, thereby changing the audio characteristics of the loudspeaker and improving the sound effect of the electronic device.

Description

Technical Field

[0001] The present application relates to the technical field of audio equipment, and in particular to a speaker and an electronic device. Background Art

[0002] With the development of electronic devices such as smartphones, a series of new electronic devices have emerged on the market, such as foldable electronic devices and electronic devices with retractable screens. The audio and video experience is a common requirement of these electronic devices, so improving the sound experience of electronic devices is particularly important. Summary of the Invention

[0003] Embodiments of the present application provide a speaker and an electronic device to improve the sound quality of the electronic device.

[0004] A loudspeaker, comprising:

[0005] A first housing having a receiving space;

[0006] a second cover shell, slidably fitted with the first cover shell for use in entering and exiting the accommodation space, and changing the volume of the space enclosed by the first cover shell and the second cover shell during the process of entering and exiting the accommodation space; and

[0007] The electroacoustic module is provided in at least one of the first housing and the second housing.

[0008] An electronic device, comprising:

[0009] a shell assembly comprising a first shell and a second shell connected to the first shell;

[0010] a flexible screen module, comprising a fixed portion and a free portion arranged opposite to each other, wherein the fixed portion is connected to the first shell, and the free portion bypasses an end of the second shell away from the first shell and is accommodated in the shell assembly; and

[0011] The speaker as described above, wherein the first cover is fixed relative to one of the first shell, the second shell, and the free portion, and the second cover is fixed relative to one of the remaining two of the first shell, the second shell, and the free portion;

[0012] The second shell can move relative to the first shell to drive the second cover shell to move in and out of the first cover shell, and drive at least a portion of the free portion to move in and out of the shell assembly.

[0013] The above speakers and electronic devices can be applied to electronic devices. Since the second cover shell slides with the first cover shell for entering and exiting the accommodation space, and changes the volume of the space enclosed by the first cover shell and the second cover shell during the process of entering and exiting the accommodation space, the electronic device can drive the second cover shell to slide relative to the first cover shell to enter and exit the accommodation space, so as to change the sound reflection space, thereby changing the audio characteristics of the speaker and improving the sound effect of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0015] Figure 1 is a schematic diagram of an electronic device according to an embodiment, wherein the second housing is in a second position;

[0016] Figure 2 for Figure 1 a schematic diagram of another perspective of the electronic device;

[0017] Figure 3 for Figure 1 an exploded view of the electronic device shown;

[0018] Figure 4 for Figure 1 A schematic diagram of the electronic device shown, wherein the second housing is in a first position;

[0019] Figure 5 for Figure 4 a schematic diagram of another perspective of the electronic device;

[0020] Figure 6 for Figure 1 a front view of the electronic device shown;

[0021] Figure 7 for Figure 6 An enlarged cross-sectional view along AA of one embodiment of the electronic device shown;

[0022] Figure 8 for Figure 4 a front view of the electronic device shown;

[0023] Figure 9 for Figure 8 An enlarged cross-sectional view along line BB of one embodiment of the electronic device shown;

[0024] Figure 10is a cross-sectional view of a loudspeaker according to an embodiment, wherein the second housing is in a first state;

[0025] Figure 11 is a cross-sectional view of a loudspeaker according to an embodiment, wherein the second housing is in a second state;

[0026] Figure 12 is a cross-sectional view of a loudspeaker according to an embodiment, wherein the second housing is in a third state;

[0027] Figure 13 for Figure 6 A cross-sectional view along AA of another embodiment of the electronic device shown;

[0028] Figure 14 for Figure 8 A cross-sectional view taken along line BB of another embodiment of the electronic device shown;

[0029] Figure 15 is a schematic diagram of a speaker according to another embodiment, wherein the second housing is in a second state;

[0030] Figure 16 Schematic diagram of the positional relationship between the speaker, the first housing, and the second housing according to an embodiment, wherein the second housing is in the second position;

[0031] Figure 17 The figure is a schematic diagram of the positional relationship between a speaker, a first shell, and a second shell according to an embodiment, wherein the second shell is in the first position.

[0032] Reference numerals:

[0033] 100, electronic device 10, housing assembly 12, first housing

[0034] 14. Second housing 142, rear cover 16, storage space

[0035] 20, flexible screen module 20a, fixed part 20b, free part

[0036] 30, guide 40, speaker 41, first housing

[0037] 41a, first front cavity 41b, first rear cavity 41c, first sound outlet

[0038] 411, accommodating space 413, opening 43, second cover

[0039] 43a, second front cavity 43b, second rear cavity 43c, second sound outlet

[0040] 433, first limiting portion 435, second limiting portion 45, electroacoustic module

[0041] 50, camera module 60, drive mechanism 70, tensioning assembly

[0042] 71. Movable part S1, first speaker S2, second speaker DETAILED DESCRIPTION

[0043] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0044] 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:

[0045] (1) Connection via a wired line, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, or direct cable connection;

[0046] (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.

[0047] 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:

[0048] (1) Satellite phone or cellular phone;

[0049] (2) Personal Communications System (PCS) terminals that can combine cellular radiotelephones with data processing, fax, and data communications capabilities;

[0050] (3) Radiotelephone, pager, Internet / Intranet access, Web browser, notepad, calendar, Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0051] (4) conventional laptop and / or palmtop receivers;

[0052] (5) Conventional laptop and / or palmtop radiotelephone transceivers, etc.

[0053] 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 member 30. The shell assembly 10 is a hollow structure, and the flexible screen module 20, the guide member 30, etc. can all be set in the shell assembly 10. The electronic device 100 may also include a circuit board (not shown), a battery (not shown) and a speaker 40. The circuit board, the battery and the speaker 40 can all be set 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 speaker is used to convert electrical signals into sound signals. For example, the speaker can be used to play audio information. The flexible screen module 20 and the speaker 40 are both communicatively connected to the circuit board, and the battery can power the flexible screen module 20, the speaker 40 and the electronic components on the circuit board. Of course, the electronic device 100 may also include a camera module 50. The camera module 50 is communicatively connected to the circuit board, and the battery can power the camera module 50. It can be understood 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 used as an example for explanation.

[0054] Combine Figure 3 、 Figure 4 and Figure 5 In the embodiment of the present application, the housing assembly 10 includes a first housing 12 and a second housing 14, and the second housing 14 and the first housing 12 are capable of relative movement. Specifically, in the present embodiment, the second housing 14 and the first housing 12 are slidably connected. In other words, the second housing 14 is capable of sliding relative to the first housing 12. For example, one of the first housing 12 and the second housing 14 may be provided with a slide rail, and the other may slide along the slide rail so that the end of the second housing 14 away from the first housing 12 and the end of the first housing 12 away from the second housing 14 move toward or away from each other.

[0055] The second housing 14 can slide relative to the first housing 12 to a first position and a second position. Figure 4 When the second housing 14 is in the first position, the electronic device 100 can obtain a relatively large display area to enhance the user experience of the electronic device 100; when the second housing 14 is in the second position (see Figure 1), the electronic device 100 has a relatively small size and is easy to carry. It will be understood that in the embodiments of the present application, the first position, the second position, and similar expressions all refer to the relative positions of the second housing 14 and the first housing 12. For simplicity, expressions such as "the second housing 14 is in the first position" or "when in the first position" refer to the second housing 14 being in the first position relative to the first housing 12, and expressions such as "the second housing 14 is in the second position" or "when in the second position" refer to the second housing 14 being in the second position relative to the first housing 12.

[0056] In this embodiment, the position of the end of the second housing 14 away from the first housing 12 and the position of the end of the first housing 12 away from the second housing 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 of the electronic device 100 in the width direction is the end of the second shell 14 away from the first shell 12, and the rightmost side of the electronic device 100 in the width direction is the end of the first shell 12 away from the second shell 14.

[0057] 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 the data cable jack, the charging cable jack, or the headphone jack, can be set 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 the data cable jack, the charging cable jack, or the headphone jack, can be set at the end in the length direction.

[0058] See also Figure 6 and Figure 7, the second shell 14 and the first shell 12 can jointly form a receiving space 16. It can be understood 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 fixed portion 20a and a free portion 20b that are relatively arranged. 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 the 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 to be retracted into the shell assembly 10.

[0059] It is understood that in the embodiments of the present application, the relative fixed positions of two objects means that the two objects cannot produce relative movement under normal circumstances. The two objects that are relatively fixed in position 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 relative fixed positions of the fixing portion 20a and the first shell 12 can be directly in contact with the fixing portion 20a, such as by 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, an intermediate connecting plate, etc.

[0060] It is understood that the fixed portion 20a and the free portion 20b can be distinguished as follows: when the second housing 14 is in the second position relative to the first housing 12, the portion of the flexible screen module 20 exposed outside the housing assembly 10 is the fixed portion 20a of the flexible screen module 20, and the portion of the flexible screen module 20 housed within the housing assembly 10 is the free portion 20b. In some embodiments, when the second housing 14 is in the second position, the fixed portion 20a exposed outside the housing assembly 10 is generally rectangular and can be 5 to 6 inches in size, which is comparable to the size of a typical smartphone display, making the electronic device 100 portable and convenient to use.

[0061] The second shell 14 may further include a back cover 142, which covers the free portion 20b of the flexible screen module 20 when in the second position. The back cover 142 may be provided with a light-transmitting area, and the portion of the flexible screen module 20 housed 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 achieve functions such as selfies and video calls. The light-transmitting area may be made of transparent glass, or it may be formed by an opening in 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 housed 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.

[0062] See Figure 8 and Figure 9 In this embodiment, the guide member 30 is disposed at the end of the second housing 14 away from the first housing 12. When the second housing 14 switches from the second position to the first position relative to the first housing 12, the guide member 30 can guide the flexible screen module 20 to deform and unfold within the second housing 14. The guide member 30 can limit the bending radius of the flexible screen module 20 to an appropriate range to prevent damage to the flexible screen module 20 caused by a too small bending radius. Of course, the guide member 30 can also prevent the flexible screen module 20 from having an excessively large bending radius, which could result in the electronic device 100 being too thick.

[0063] like Figure 9 As shown, in some embodiments, the guide member 30 can be a rotating shaft structure with protruding teeth, and the flexible screen module 20 is linked to the guide member 30 by means of engagement or the like. When the second housing 14 slides relative to the first housing 12, the guide member 30 drives the portion of the flexible screen module 20 engaged with the guide member 30 to move and expand or retract into the housing assembly 10.

[0064] It is understandable that in other embodiments, the guide member 30 can 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 the part of the flexible screen module 20 attached to the guide member 30, so that more flexible screen module 20 is exposed to the outside of the shell assembly 10 and is 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.

[0065] In other embodiments, the guide member 30 may also be fixed to the second housing 14, and the guide member 30 may have a smooth surface. During the process of unfolding the flexible screen module 20 into the second housing 14, the guide member 30 may slidably contact the flexible screen module 20 through its smooth surface. In other words, in this embodiment, the guide member 30 may be integrally formed or welded with the second housing 14, and the guide member 30 may be considered a part of the second housing 14. The free portion 20b of the flexible screen module 20 bypasses the end of the second housing 14 away from the first housing 12 and extends into the housing assembly 10.

[0066] During 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 retract 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. The driving mechanism 60 may be linked to 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 deploy or retract. 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 manually or in other ways.

[0067] Continue reading Figure 8 and Figure 9 The 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. During the process of switching the second shell 14 from the first position to the second position, the tensioning assembly 70 applies a tensile force to the free portion 20b. By utilizing the supporting effect of the guide 30 on the flexible screen module 20, the entire free portion 20b can be subjected to the tensile force, thereby allowing the free portion 20b to 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 during the process of the flexible screen module 20 extending 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.

[0068] In some embodiments, the tensioning assembly 70 is disposed in the shell assembly 10 and is 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. During 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.

[0069] During the process of the flexible screen module 20 extending from the shell assembly 10, that is, during 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 part accumulates elastic potential energy. The tensile force applied by the movable part 71 to the flexible screen module 20 acts as resistance, so that the flexible screen module 20 can be smoothly unfolded on the second shell 14; during the process of the flexible screen module 20 retracting into the shell assembly 10, that is, during the process of the second shell 14 switching from the first position to the second position, the elastic part releases elastic potential energy and drives the movable part 71 to reset. The tensile force applied by the movable part 71 to the flexible screen module 20 acts as power, so that the flexible screen module 20 can be smoothly retracted into 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.

[0070] 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 may include an elastic cord, one end of which is connected to the first housing 12 or the second housing 14, and the other end of which is connected to the free portion 20b. This elastic cord can be used to apply tension to the flexible screen module 20 during movement of the second housing 14 relative to the first housing 12. For another example, in an embodiment where the electronic device 100 includes a drive mechanism 60, the drive mechanism 60 can be connected to the movable member 71 of the tensioning assembly 70. As the flexible screen module 20 extends from the housing assembly 10, the transmission resistance of the drive mechanism 60 can gradually release the flexible screen module 20 and apply tension to the flexible screen module 20, allowing the flexible screen module 20 to smoothly unfold within the second housing 14. As the flexible screen module 20 retracts into the housing assembly 10, the drive mechanism 60 drives the free portion 20b of the flexible screen module 20 to gradually wind around the movable member 71, allowing the flexible screen module 20 to smoothly retract into the housing assembly 10. In this embodiment, the driving mechanism 60 may be a motor, or a combination of a motor and a gear set.

[0071] It is understandable that in this embodiment, the first position and the second position can be regarded as the two extreme positions of the movement of the second shell 14 relative to the first shell 12. In the first position, the display area of ​​the flexible screen module 20 reaches its maximum state. Under normal circumstances, the second shell 14 can no longer move away from the first shell 12. In the second position, the display area of ​​the flexible screen module 20 reaches its 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 engages with one of the slots, thereby achieving the positioning of the second shell 14 and the first shell 12 in the first position; in the second position, the spring engages with the other slot, thereby achieving the positioning of the second shell 14 and the first shell 12 in the second position.

[0072] It is understood that multiple intermediate positions can be provided between the first position and the second position to achieve positioning of the second housing 14 relative to the first housing 12 at multiple intermediate positions, and to 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. The multiple intermediate positions can also be achieved using a limiting structure, for example, by cooperating with a spring and a slot to achieve positioning of the second housing 14 relative to the first housing 12 at multiple intermediate positions.

[0073] refer to Figure 10 、 Figure 11 and Figure 12 The speaker 40 of the electronic device 100 may include a first cover shell 41, a second cover shell 43 and an electroacoustic module 45. The first cover shell 41 is hollow and has a receiving space 411. The second cover shell 43 is connected to the first cover shell 41, and the second cover shell 43 may also be hollow. The second cover shell 43 and the first cover shell 41 are slidably matched to enable the second cover shell 43 to enter and exit the receiving space 411, and change the volume of the space enclosed by the first cover shell 41 and the second cover shell 43 in the process of entering and exiting the receiving space 411. The electroacoustic module 45 is provided in at least one of the first cover shell 41 and the second cover shell 43, and the electroacoustic module 45 can be communicatively connected to the circuit board of the electronic device 100 for power-on sound generation.

[0074] In one embodiment, the first housing 41 is provided with an electroacoustic module 45, while the second housing 43 is not. In another embodiment, the second housing 43 is provided with an electroacoustic module 45, while the first housing 41 is not. In other embodiments, both the first housing 41 and the second housing 43 are provided with an electroacoustic module 45. The electroacoustic module 45 is used to generate sound when powered on, and its most common structure is a combination of a diaphragm and a coil.

[0075] When the second housing 43 enters the accommodating space 411, it occupies part of the volume of the accommodating space 411, and the volume of the space enclosed by the first and second housings 41, 43 decreases, that is, the volume of the space used for sound reflection decreases. When the second housing 43, which is housed in the accommodating space 411, extends outside the first housing 41, the volume of the space enclosed by the first and second housings 41, 43 decreases, that is, the volume of the space used for sound reflection increases. Under the condition that other conditions remain unchanged, the volume of the cavity used for sound reflection can directly determine the low-frequency resonance frequency of the speaker 40. The larger the volume of the cavity used for resonance, the lower the low-frequency resonance frequency, that is, the better the low-frequency performance. Therefore, after the second housing 43 extends outside the first housing 41, the volume of the space used for sound reflection increases, the low-frequency frequency response of the speaker 40 is improved, and the low-frequency sound emitted by the speaker 40 increases. This can provide the speaker 40 with a better low-frequency effect, that is, the electronic device 100 has better sound quality, that is, the sound effect of the speaker 40 and the electronic device 100 is improved.

[0076] The first cover shell 41 is relatively fixed in position with respect to one of the first shell 12, the second shell 14, and the free portion 20b, and the second cover shell 43 is relatively fixed in position with respect to 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 41 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 41 is relatively fixed with respect to the position of the fixed portion 20a, and the second cover shell 43 can be connected to the second shell 14 or the free portion 20b of the flexible screen module 20 to achieve telescopic movement of the second cover shell 43 relative to the first cover shell 41 during the movement of the second shell 14 relative to the first shell 12.

[0077] refer to Figure 9 In other embodiments, the second cover shell 43 can be connected to the fixed portion 20a of the flexible screen module 20 or the first shell 12, so that the position of the second cover shell 43 and the first shell 12 is relatively fixed, and the first cover shell 41 can be fixedly connected to the second shell 14 or the free portion 20b of the flexible screen module 20, so that the second cover shell 43 can be telescopically moved relative to the first cover shell 41 during the movement of the second shell 14 relative to the first shell 12. Of course, refer to Figure 13 and Figure 14In other embodiments, one of the first cover shell 41 and the second cover shell 43 can be connected to the second shell 14 to achieve relative fixation with the position of the second shell 14, and the other of the first cover shell 41 and the second cover shell 43 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 as to achieve telescopic movement of the second cover shell 43 relative to the first cover shell 41 during the movement of the second shell 14 relative to the first shell 12, thereby changing the space used to reflect sound, which will not be repeated here.

[0078] In the process of the second housing 14 switching from the second position to the first position relative to the first housing 12, that is, in the process of the free portion 20b gradually extending out of the housing assembly 10, the second housing 14 is connected to the first housing 12. Figure 12 The second housing 43 extends outside the first housing 41, and the volume of the space enclosed by the first and second housings 41, 43, is expanded, that is, the space for sound reflection is expanded. The low-frequency response of the speaker 40 is improved, and the low-frequency sound emitted by the speaker 40 is increased. This can make the speaker 40 have a better low-frequency effect, and the electronic device 100 has better sound quality, that is, the sound effect of the speaker 40 and the electronic device 100 is improved.

[0079] 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 extended in the second shell 14 gradually retracting into the shell assembly 10, the second shell 14 is connected to the first shell 12. Figure 11 As the second housing 43 retracts into the accommodating space 411, the volume of the space enclosed by the first and second housings 41, 43 decreases, reducing the space available for sound reflection and correspondingly decreasing the low-frequency response of the speaker 40. In other words, as the second housing moves relative to the first housing 12, the audio characteristics of the speaker 40 can change with the expanded area of ​​the flexible screen module 20, thereby improving the sound quality of the electronic device 100.

[0080] In the related art, the volume of the back cavity of the speaker 40 for reflecting sound of an electronic device 100 such as a smartphone is generally fixed. For example, the volume of the back cavity of the speaker 40 generally used in the electronic device 100 is in the range of 0.6 cubic centimeters to 1 cubic centimeter. When the speaker 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 this embodiment, the setting of the second cover 43 entering and exiting the first cover 41 can change the space for reflecting sound. Therefore, the external sound quality of the speaker 40 can be adaptively adjusted according to the display area of ​​the flexible screen module 20 to expand the use scenario of the speaker 40. For example, when the display area of ​​the electronic device 100 is large (for example, playing games or watching movies), the second cover 43 extends out of the first cover 41 so that the speaker 40 has relatively good low-frequency characteristics to enhance the user experience and match the sound quality of the speaker 40 with the picture displayed by the flexible screen module 20, that is, to achieve sound-picture matching, so that the volume of the speaker 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 web pages, etc.), the second cover shell 43 is at least partially received in the accommodating space 411, and the volume of the space enclosed by the first cover shell 41 and the second cover shell 43 is reduced to reduce the low-frequency performance of the speaker 40 and achieve sound and picture matching again.

[0081] In the electronic device 100, the second housing 14 can move relative to the first housing 12 to drive the flexible screen module 20 to unfold in the second housing 14 or retract into the housing assembly 10. When the flexible screen module 20 is unfolded in the second housing 14, the electronic device 100 can obtain a relatively large display area to enhance the user experience, and the second cover 43 extends out of the first cover 41 to increase the space for sound reflection, thereby enhancing the low-frequency characteristics of the speaker 40 and improving the sound effect of the speaker 40; after the flexible screen module 20 unfolded in the second housing 14 is retracted into the housing assembly 10, the electronic device 100 can obtain a relatively small external size to have relatively good portability, and the second cover 43 is retracted into the first cover 41 to reduce the space for sound reflection accordingly, so the audio characteristics of the speaker 40 also change accordingly. The speaker 40 of the 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 speaker 40 according to different usage scenarios, thereby expanding the usage scenarios of the speaker 40.

[0082] In the above embodiment, the first housing 41 and the second housing 43 may both be rectangular boxes, with the first housing 41 being sleeved within the second housing 43. An opening 413 is defined at one end of the first housing 41 for entry and exit of the second housing 43. In other embodiments, the first housing 41 and the second housing 43 may have other shapes, such as a cylindrical shape.

[0083] This application takes the example of one of the first cover shell 41 and the second cover shell 43 being connected to the first shell 12, and the other of the first cover shell 41 and the second cover shell 43 being connected to the second shell 14. This structural arrangement facilitates the assembly of the first cover shell 41 and the second cover shell 43 in the shell assembly 10. For example, the first cover shell 41 can be fixedly connected to the first shell 12 by threaded connection, bonding, or welding, and the second cover shell 43 can be fixedly connected to the second shell 14 by threaded connection, bonding, or welding. Compared to a structure in which the first cover shell 41 or the second cover shell 43 is fixedly connected to the free portion 20b and can move with the free portion 20b, the above embodiment reduces the difficulty of assembly and improves the efficiency of assembly.

[0084] In another embodiment of the present application, the first housing 41 and the second housing 43 are both provided with an electroacoustic module 45 as an example for description. Figure 10 The electroacoustic module 45 disposed in the first housing 41 forms a first front cavity 41a and a first rear cavity 41b spaced apart from each other. The electroacoustic module 45 disposed in the second housing 43 forms a second front cavity 43a and a second rear cavity 43b spaced apart from each other. The first rear cavity 41b is connected to the second rear cavity 43b. Of course, one of the first rear cavity 41b and the second rear cavity 43b can be omitted. The first housing 41, the second housing 43, and the electroacoustic module 45 can collectively enclose a shared rear cavity.

[0085] Taking the electroacoustic module 45 as an example, comprising a diaphragm and a coil, the diaphragm of the electroacoustic module 45 disposed in the first housing 41 can be connected to the first housing 41 and form a first front cavity 41a and a first rear cavity 41b spaced apart from each other. The connection between the diaphragm and the first housing 41 effectively isolates the first front cavity 41a from the first rear cavity 41b, preventing acoustic shorting between the first front cavity 41a and the first rear cavity 41b, which could degrade the acoustic performance of the speaker 40. Of course, in some embodiments, the diaphragm, coil, and magnet of the electroacoustic module 45 can be packaged as a whole. This packaged electroacoustic module 45 can also form a first front cavity 41a and a first rear cavity 41b spaced apart from each other with the first housing 41, ensuring effective isolation between the first front cavity 41a and the second front cavity 43a. The arrangement of the electroacoustic module 45 disposed in the second housing 43 forming a second front cavity 43a and a second rear cavity 43b spaced apart from each other can be referred to in the above embodiment and will not be further described here.

[0086] Furthermore, the first cover shell 41 is provided with a first sound outlet 41c connected to the first front cavity 41a, that is, the first front cavity 41a can transmit sound to the outside of the speaker 40 through the first sound outlet 41c. The second cover shell 43 is provided with a second sound outlet 43c connected to the second front cavity 43a. The second sound outlet 43c can be arranged on the same side as the first sound outlet 41c. When the second cover shell 43 extends out of the first cover shell 41, the second sound outlet 43c is connected to the outside, that is, after the second cover shell 43 extends out of the first cover shell 41, the second front cavity 43a can transmit sound to the outside of the speaker 40 through the second sound outlet 43c. For example, when the second shell 14 of the electronic device 100 moves to the first position relative to the first shell 12, the first sound outlet 41c and the second sound outlet 43c are both used for sound emission from the speaker 40.

[0087] The second housing 43 has a first state, a second state, and a third state between the first state and the second state in the first housing 41. Figure 10 In the first state, the second housing 43 extends out of the accommodating space 411, and all the second sound outlets 43c are exposed outside the first housing 41. The electroacoustic module 45, the first housing 41, and the second housing 43 together enclose a sealed rear cavity. In other words, in the first state, the first rear cavity 41b can be closed by the second housing 43 and the electroacoustic module 45 provided in the second housing 43. The combined volume of the first rear cavity 41b and the second rear cavity 43b for reflecting sound has a large volume and can be effectively isolated from the outside world to avoid the first rear cavity 41b or the second rear cavity 43b from communicating with the outside world and causing sound leakage. The first state can correspond to the second shell 14 being in the first position, the electronic device 100 having a relatively large display area, and the low-frequency characteristics of the speaker 40 can be significantly improved compared to the second position, that is, the sound effect of the electronic device 100 can be significantly improved.

[0088] refer to Figure 11 In the second state, the second cover shell 43 is accommodated in the first rear cavity 41b and the electroacoustic module 45, the first cover shell 41 and the second cover shell 43 are enclosed together to form a closed rear cavity. In other words, in the second state, the first rear cavity 41b is enclosed by the second cover shell 43 and the electroacoustic module 45, and the combined volume of the first rear cavity 41b and the second rear cavity 43b for reflecting sound has a smaller volume and can be effectively isolated from the outside world to avoid the first rear cavity 41b or the second rear cavity 43b from being connected to the outside world and causing sound leakage. The second state can correspond to the second shell 14 being in the second position, the electronic device 100 having a relatively small display area, and the low-frequency characteristics of the speaker 40 only need to meet the requirements. The speaker 40 in the second state has a relatively small external size, which can improve the compactness of the internal component layout of the electronic device 100.

[0089] It is understood that in the second state, the second sound outlet 43c is hidden within the first housing 41. To ensure the sealing of the first rear cavity 41b, the first housing 41 does not need to have a through hole for connecting to the second sound outlet 43c. In other words, in the first state, the first housing 41 can block the second sound outlet 43c, and the electro-acoustic module 45 disposed in the second housing 43 does not need to be powered to produce sound in the first state.

[0090] refer to Figure 12 In the third state, a portion of the second housing 43 extends out of the first rear cavity 41b, exposing a portion of the second sound outlet 43c outside the first housing 41. The electroacoustic module 45, the first housing 41, and the second housing 43 collectively form a sealed rear cavity. In other words, in the third state, the first rear cavity 41b is sealed by the second housing 43 and the electroacoustic module 45 disposed therein. The combined volume of the first and second rear cavities 41b, 43b, for reflecting sound, is larger than in the second state but smaller than in the first state. The first housing 41 can seal the second sound outlet 43c hidden within the accommodating space 411 to prevent the second rear cavity 43b from communicating with the second front cavity 43a through the second sound outlet 43c hidden within the accommodating space 411, and then communicating with the outside world through the second sound outlet 43c exposed outside the first housing 41. This effectively isolates the combined volume of the first rear cavity 41b and the second rear cavity 43b from the outside world, thereby preventing the first rear cavity 41b or the second rear cavity 43b from communicating with the outside world and causing sound leakage. The third state can correspond to the second housing 14 being in a position between the first position and the second position, the electronic device 100 having a display area larger than the second position but smaller than the first position, and the low-frequency characteristics of the speaker 40 can also be improved compared to the second position, that is, the sound quality of the electronic device 100 can be improved.

[0091] It will be appreciated that, in this embodiment, the first and second states can be considered as the two extreme positions of movement of the second cover 43 relative to the first cover 41. For example, the first state may correspond to the second housing 14 being in the first position, the display area of ​​the flexible screen module 20 reaching its maximum state, and under normal circumstances, the second cover 43 cannot further extend outward from the first cover 41 relative to the first cover 41. The second state may correspond to the second housing 14 being in the second position, the display area of ​​the flexible screen module 20 reaching its minimum state, and under normal circumstances, the second cover 43 cannot further retract into the accommodating space 411 relative to the first cover 41.

[0092] It is understandable that multiple intermediate states can be set between the first state and the second state. For example, the third state in the above embodiment is an example. Between the first state and the third state, and between the second state and the third state, the second cover 43 can have multiple intermediate states, so that the audio characteristics of the speaker 40 of the electronic device 100 can be adaptively changed with the display area of ​​the flexible screen module 20. For example, the larger the display area of ​​the flexible screen module 20, the better the bass effect of the speaker 40, thereby achieving sound and picture matching of the electronic device 100 and matching the needs of users when the use scenarios of the electronic device 100 are different. In other words, in the electronic device 100 of the embodiment of the present application, during the switching of the second shell 14 between the first position and the second position, the volume of the enclosed rear cavity formed by the electroacoustic module 45, the first cover shell 41, and the second cover shell 43 changes accordingly, that is, the volume of the common rear cavity used for sound reflection is variable, so that the audio characteristics (frequency, loudness, etc.) of the speaker 40 can change with the expansion 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.

[0093] Continue reading Figure 10 and Figure 11 In some embodiments, a first stopper 433 is provided at one end of the second housing 43, and a second stopper 435 is provided at the opposite end of the second housing 43. The first stopper 433 and the second stopper 435 are spaced apart in the sliding direction of the second housing 43 relative to the first housing 41, and protrude beyond the periphery of the first stopper 433 in a direction perpendicular to the sliding direction. The first stopper 433 is received in the accommodating space 411, while the second stopper 435 is exposed outside the first housing 41. The first stopper 433 and the second stopper 435 are used to limit the range of movement of the second housing 43 relative to the first housing 41. Specifically, in a first state, the second housing 43 extends out of the accommodating space 411, and the first stopper 433 abuts the opening 413. In a second state, the second housing 43 is received in the accommodating space 411, and the second stopper 435 abuts the opening 413. The above-mentioned structural arrangement, by utilizing the cooperation between the first limiting portion 433 and the second limiting portion 435 of the second cover shell 43 and the first cover shell 41, can limit the movement range of the second cover shell 43 in the first cover shell 41, so as to prevent the second cover shell 43 from accidentally falling out of the first cover shell 41 or prevent the second cover shell 43 from being too retracted into the first cover shell 41 and damaging the components inside the first cover shell 41, thereby ensuring the working reliability of the speaker 40.

[0094] Furthermore, the speaker 40 may include a buffer member (not shown) located at the opening 413. The buffer member may be a silicone or rubber member. In the first state, the first stopper 433 abuts the buffer member; in the second state, the second stopper 435 abuts the buffer member. The provision of the buffer member prevents large impacts from occurring during movement of the second housing 43 relative to the first housing 41, effectively protecting the speaker 40 and ensuring its operational reliability.

[0095] Furthermore, in some embodiments, the first limiting portion 433 housed in the first rear cavity 41b can be sealed with the cavity wall of the first rear cavity 41b. For example, the second limiting portion 435 can be covered with a sealing ring, which can be regarded as a part of the first limiting portion 433, so as to ensure the sealing between the second limiting portion 435 and the cavity wall of the accommodating space 411 during the movement of the second cover 43 relative to the first cover 41, and effectively seal the second sound outlet 43c when it is hidden in the first cover 41. For example, this structural arrangement can effectively seal the second sound outlet 43c hidden in the first cover 41 by using the second limiting portion 435 in the second state and the third state, thereby preventing the combined cavity of the first rear cavity 41b and the second rear cavity 43b from communicating with the outside world and causing sound leakage.

[0096] It can be understood that in the embodiment of the present application, the structural parameters and performance parameters of the electroacoustic module 45 provided in the accommodating space 411 and the electroacoustic module 45 provided in the second cover shell 43 can be the same, and it should not be understood that the structural parameters and performance parameters of the electroacoustic module 45 provided in the accommodating space 411 and the electroacoustic module 45 provided in the second cover shell 43 are necessarily different.

[0097] It is understood that in the embodiment where the second housing 43 is separated by the diaphragm of the electroacoustic module 45 to form the second front cavity 43a and the second rear cavity 43b, after the second housing 43 extends out of the first housing 41 so that the second sound outlet 43c is exposed to the first housing 41, that is, when the second housing 14 switches to the first position, the electroacoustic module 45 located in the accommodating space 411 can be powered to produce sound, and the air in the first rear cavity 41b and the second rear cavity 43b will vibrate accordingly. The diaphragm of the electroacoustic module 45 located in the second housing 43 can be driven by the vibrating air to vibrate, thereby driving the air outside the second housing 43 to vibrate and produce sound. In other words, in this embodiment, the electroacoustic module 45 in the accommodation space 411 can serve as the primary sound-generating device, and the electroacoustic module 45 in the second housing 43 does not need to be powered. The diaphragm provided in the electroacoustic module 45 in the second housing 43 can serve as a passive radiating membrane and be used to generate sound. This allows the speaker 40 to have better low-frequency performance and save energy when the second housing 14 is switched to the first position and an intermediate position between the first and second positions. Of course, it is understood that in this embodiment, the second housing 43 only needs to be provided with a diaphragm, and the diaphragm does not need to be provided with a corresponding coil.

[0098] Of course, reference Figure 15 It can be understood that the second sound outlet 43c of the second cover shell 43 can be set to be always exposed outside the first cover shell 41. For example, the second sound outlet 43c of the second cover shell 43 can be set in the second limiting portion 435, so that the second sound outlet 43c is always exposed outside the first cover shell 41 during the process of the second cover shell 43 entering and exiting the first cover shell 41, that is, the first sound outlet 41c and the second sound outlet 43c are always connected to the outside world. In this embodiment, one of the first cover shell 41 and the second cover shell 43 is provided with the electroacoustic module 45, and the other is provided with the diaphragm, so that the electroacoustic module 45 is used as the main sound-emitting device and the diaphragm is used as a passive radiation membrane. During the process of the second shell 14 switching between the first position and the second position, the speaker 40 can also have better low-frequency performance and save energy.

[0099] Of course, in an embodiment where the second sound outlet 43c is always connected to the outside world, for the speaker 40 in the second state, both the electroacoustic module 45 provided in the first housing 41 and the electroacoustic module 45 provided in the second housing 43 can be powered on to produce sound. In this embodiment, during the process of the second housing 43 entering and exiting the first housing 41, the second sound outlet 43c no longer enters the first housing 41, thereby simplifying the setting of the sealing structure. For example, in this embodiment, a sealing ring is provided in the opening 413 of the first housing 41 to seal the gap between the second housing 43 and the first housing 41 during the process of the second housing 43 entering and exiting the first housing 41. In this embodiment, when the second shell 14 is in the second position, the electroacoustic module 45 provided on the first cover shell 41 and the electroacoustic module 45 provided on the second cover shell 43 can adopt the same external speaker parameters; when the second shell 14 is in the first position, one of the electroacoustic modules 45 can be controlled to output the left channel, and the other electroacoustic module 45 can be controlled to output the right channel, so that the electronic device 100 in the first position and the second position have significantly different sound effects, so as to enhance the audio experience of the electronic device 100.

[0100] In an embodiment in which the second sound outlet 43c is always connected to the outside world, when the second housing 14 is in the second position, the distance between the first sound outlet 41c and the second sound outlet 43c is relatively smaller than in the first position. It can be considered that the distance between the two sound sources is smaller, so the width of the sound radiation of the speaker 40 is also relatively smaller. When the external sound parameters (frequency, loudness, etc.) are the same, the sound field formed by the sounds of the two electroacoustic modules 45 can produce a significant improvement in sound loudness. When the second housing 14 is in the first position, the distance between the first sound outlet 41c and the second sound outlet 43c is relatively larger than in the second position. It can be considered that the distance between the two sound sources is larger, and the width of the sound radiation of the speaker 40 is also relatively larger. When the external sound parameters (frequency, loudness, etc.) are the same, the sound field formed by the sounds of the two electroacoustic modules 45 can be significantly expanded in terms of sound field width. In other words, in this embodiment, the second housing 14 can produce significantly different audio experiences when 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.

[0101] In the above embodiment, the mating structure of the first housing 41 and the second housing 43 can also be used to generate 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 can include a sensor (e.g., a Hall effect sensor or a photoelectric sensor), and the drive mechanism 60 and the sensor (not shown) are both communicatively connected to the processor. The sensor is connected to at least one of the first housing 41 and the second housing 43 and is used to detect the length of the second housing 43 extending from the first housing 41. The processor is configured to determine whether the length of the second housing 43 extending from the first housing 41 is less than a preset value. When the length is less than the preset value, the processor responds to the detection signal and disconnects the control circuit of the drive mechanism 60. Taking a Hall effect sensor as an example, the Hall effect sensor can include a magnet and a magnetic induction element, one of which is located on the first housing 41 and the other on the second housing 43. When the second housing 43 retracts into the accommodation space 411 relative to the first housing 41, the Hall effect sensor can measure the length of the second housing 43 extending from the first housing 41. When the length is less than a preset value, such as 1 mm, it can be considered that the two are about to abut. In response to the detection result, the processor can disconnect the control circuit of the drive mechanism 60, thereby protecting the internal electronic components or other structures of the electronic device 100.

[0102] In embodiments where the sensor is a photoelectric sensor, the principle of using the sensor to generate a trigger signal for the second position is similar to that of a Hall effect sensor. Specifically, the photoelectric sensor can also be used to generate a trigger signal for the first position. Specifically, when the sensor detects that the extension of the second housing 43 from the first housing 41 approaches a limit length (this limit length is a structural parameter of the speaker 40, i.e., the extension length in the first state), the processor, in response to this detection result, disconnects the control circuit of the drive mechanism 60, thereby protecting the electronic components or other structures within the electronic device 100.

[0103] Of course, the sensor may also be a pressure sensor to detect the length of the second housing 43 extending from the first housing 41. For example, the pressure sensor may be disposed at the opening 413 of the first housing 41. When the second housing 43 is retracted into the first housing 41 and the second stopper 435 abuts the first housing 41, the length of the second housing 43 extending from the first housing 41 is considered to be approximately zero. In response to this detection result, the processor disconnects the control circuit of the drive mechanism 60. For another example, when the second housing 43 extends from the first housing 41 and the first stopper 433 abuts the first housing 41, the length of the second housing 43 extending from the first housing 41 is considered to have reached a limit. In response to this detection result, the processor disconnects the control circuit of the drive mechanism 60.

[0104] Of course, in embodiments where the electronic device 100 manually drives the second housing 14 to move relative to the first housing 12, the mutual abutment between the first cover 41 and the second cover 43 can also be used to limit the position of the second housing 14 relative to the first housing 12, thereby protecting the electronic components or other structures within the electronic device 100. This arrangement can not only reduce the number of sensors and simplify the arrangement of sensors in the electronic device 100, but also simplify the positioning structure of the first housing 12 and the second housing 14, thereby improving the compactness of the layout of the internal components of the electronic device 100.

[0105] refer to Figure 16 and Figure 17 In some embodiments, two speakers 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 speaker 40 is arranged at one end of the flexible screen module 20, and the other speaker 40 is arranged at the other opposite end of the flexible screen module 20. In other words, in this embodiment, one speaker 40 is arranged on one side of the movement direction of the second shell 14 relative to the first shell 12, and the other speaker 40 is arranged on the other side of the movement direction of the second shell 14 relative to the first shell 12. During the process of switching the second shell 14 between the first position and the second position relative to the first shell 12, the second cover 43 of each speaker 40 can move relative to the first cover 41, thereby changing the volume of the combined volume of the first rear cavity 41b and the second rear cavity 43b, thereby changing the audio characteristics of the speaker 40.

[0106] Specifically, refer to Figure 16 and Figure 17 The two speakers 40 can be divided into a first speaker S1 and a second speaker S2. In this embodiment, the first housing 41 of the first speaker S1 and the first housing 41 of the second speaker S2 are both fixed relative to the second housing 14, and the second housing 43 of the first speaker S1 and the second housing 43 of the second speaker S2 are both fixed relative to the first housing 12. In other words, the first speaker S1 and the second speaker S2 can be arranged axially symmetrically with respect to the direction of movement of the second housing 14 relative to the first housing 12. Of course, this axially symmetrical arrangement is not required.

[0107] Furthermore, the sound outlet of the first speaker S1, i.e., the first sound outlet 41c of the first cover 41, and the second sound outlet 43c of the second cover 43, are both provided at the end of the shell assembly 10 facing away from the second speaker S2, and the sound outlet of the second speaker S2 is provided at the end of the shell assembly 10 facing away from the first speaker S1, that is, the sound outlet directions of the two speakers 40 are provided in opposite directions. For example, in this embodiment, the sound outlet of the first speaker S1 is directed toward the bottom of the electronic device 100 so that the electronic device 100 can emit sound from the bottom. The sound outlet of the second speaker S2 is directed toward the top of the electronic device 100 so that the electronic device 100 can emit sound from the top. Combined Figure 17 When the second housing 14 moves to the first position relative to the first housing 12, the combination of the first speaker S1 and the second speaker S2 can obtain a better stereo effect to enhance the user experience. Figure 16 When the second housing 14 moves to the second position relative to the first housing 12 , the above structural arrangement can also enable the speaker 40 to have a relatively good stereo effect.

[0108] Furthermore, 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 speaker 40 are both communicatively connected to the processor of the electronic device 100, and the processor is used to control the external sound parameters of the speaker 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 second cover shell 43 extending out of the first cover shell 41 can be calculated, and then the volume of the combined cavity of the first rear cavity 41b and the second rear cavity 43b can be calculated. Based on the volume of the combined cavity, the frequency characteristics of the sound of the speaker 40 can be calculated, or a relationship curve between the audio characteristics of the speaker 40 and the relative position of the second shell 14 can be obtained, and then the sound characteristics of the electroacoustic module 45 in the first cover shell 41 and the second cover shell 43 (such as the frequency, loudness and other parameters of the sound) can be adaptively adjusted to obtain a better external speaker effect.

[0109] For example, taking the example of the second sound outlet 43c of the second housing 43 being hidden within the first housing 41, in the first position, the electroacoustic module 45 provided in the first housing 41 can be controlled to output one of the left and right channels, and the electroacoustic module 45 provided in the second housing 43 can be controlled to output the other of the left and right channels; in the second position, the electroacoustic module 45 provided in the first housing 41 is controlled to operate, and the control circuit of the electroacoustic module 45 in the second housing 43 is disconnected, so that the electronic device 100 in the first position and the second position has significantly different sound effects, thereby enhancing the audio experience of the electronic device 100. For example, during normal use, when the second housing 14 is in the first position, the user can hold the second housing 14 in the left hand and the first housing 12 in the right hand, and the electroacoustic module 45 provided in the first housing 41 can output the left channel, while the electroacoustic module 45 provided in the second housing 43 can output the right channel, thereby achieving better sound effects.

[0110] When the second shell 14 is in the second position, since the electroacoustic module 45 provided in the second cover shell 43 is not working, compared with the first position, when the external parameters (frequency, loudness, etc.) of the electroacoustic module 45 are the same, the radiation width of the sound emitted by the speaker 40 is also relatively small. When the second shell 14 is in the first position, the electroacoustic module 45 of the first cover shell 41 and the electroacoustic module 45 of the second cover shell 43 are both working. Compared with the second position, there is one more sound source, the distance between the two sound sources is relatively large, and the radiation width is also relatively large. When the external parameters (frequency, loudness, etc.) of the electroacoustic module 45 are the same, the sound field formed by the sound of the electroacoustic module 45 provided in the first cover shell 41 and the sound of the electroacoustic module 45 provided in the second cover shell 43 is significantly expanded in sound field width. In other words, the electronic device 100 of the present application, when the second shell 14 is in the first position and the second position, can produce significantly different audio experiences, 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 speaker 40. Furthermore, the length of the protruding shell assembly 10 of the flexible screen module 20 can be divided into intervals, and the external speaker parameters of the speaker 40 can be set according to the length interval combined with the volume of the combined volume of the first rear cavity 41b and the second rear cavity 43b. 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 45 provided in the first cover shell 41 and the electroacoustic module 45 provided in the second cover shell 43 to the external speaker parameters corresponding to the interval.

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

[0113] In some embodiments, the electronic device 100 includes an amplifier drive unit (not shown), and the first speaker S1 and the second speaker S2 are both communicatively connected to the amplifier drive unit. For example, the performance parameters of the first speaker S1 and the second speaker S2 can be the same, and can be communicatively connected to the same intelligent amplifier drive unit, thereby saving the number of amplifier drive units, saving device costs and saving the space occupied by the 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 speaker S1 and the second speaker S2 can use the same external speaker parameters, thereby improving the sound effect of the electronic device 100 while 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, both of which can be intelligent power amplifier drive units. One of the power amplifier drive units is communicatively connected to the first speaker S1, and the other power amplifier drive unit is communicatively connected to the second speaker S2. The structural parameters and performance parameters of the first speaker S1 and the second speaker 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 speaker S1 and the second speaker S2 can use different external speaker parameters to improve the sound effect of the electronic device 100.

[0115] In other embodiments, the two electroacoustic modules 45 of the first speaker S1 and the two electroacoustic modules 45 of the second speaker S2 are respectively provided with power amplifier drive units and can be independently controlled. In other words, in this embodiment, for each speaker 40, the electroacoustic module 45 provided on the first housing 41 and the electroacoustic module 45 provided on the second housing 43 can be provided with intelligent power amplifier drive units, and the two electroacoustic modules 45 of each speaker 40 can be independently controlled, so that when the second housing 43 extends out of the first housing 41, the first speaker 40 and the second speaker 40 are used to output four-channel audio signals to obtain a surround sound effect. For example, when the first speaker S1 and the second speaker S2 are in working state, the audio signals can be output in four channels (the two electroacoustic modules 45 of the first speaker 40 and the two electroacoustic modules 45 of the second speaker 40). Through the phase difference of the four-channel audio signals, a better surround sound effect can be achieved.

[0116] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0117] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An electronic device, characterized in that: The invention comprises a shell assembly, a flexible screen module, and a speaker. The shell assembly comprises a first shell and a second shell connected to the first shell. The flexible screen module comprises a fixed portion and a free portion arranged opposite to each other. The fixed portion is connected to the first shell. The free portion bypasses an end of the second shell away from the first shell and is accommodated in the shell assembly. The speaker comprises: A first housing having a receiving space; a second cover shell, slidably fitted with the first cover shell for use in entering and exiting the accommodation space, and changing the volume of the space enclosed by the first cover shell and the second cover shell during the process of entering and exiting the accommodation space; and an electroacoustic module, disposed in at least one of the first housing and the second housing; The first housing and the second housing are both provided with the electroacoustic module. The electroacoustic module provided in the first housing and the first housing form a first front cavity, and the electroacoustic module provided in the second housing and the second housing form a second front cavity. The first housing is provided with a first sound outlet hole communicating with the first front cavity, and the second housing is provided with a second sound outlet hole communicating with the second front cavity. After the second housing extends out of the first housing, the second sound outlet hole is communicated with the outside. The first cover is fixed relative to one of the first shell, the second shell, and the free portion, and the second cover is fixed relative to one of the remaining two of the first shell, the second shell, and the free portion. The second shell can move relative to the first shell to drive the second cover shell to move in and out of the first cover shell, and drive at least a portion of the free portion to move in and out of the shell assembly.

2. The electronic device according to claim 1, wherein When part of the second cover extends out of the accommodating space so that part of the second sound outlet is exposed outside the first cover, the electroacoustic module, the first cover and the second cover together form a closed rear cavity.

3. The electronic device according to claim 1, wherein The electroacoustic module provided in the first cover shell and the first cover shell form a first front cavity, the electroacoustic module provided in the second cover shell and the second cover shell form a second front cavity, the first cover shell is provided with a first sound outlet hole connected to the first front cavity, and the second cover shell is provided with a second sound outlet hole connected to the second front cavity; in the process of the second cover shell entering and exiting the accommodating space, the first sound outlet hole and the second sound outlet hole are both connected to the outside world.

4. The electronic device according to claim 1, wherein: The first cover shell is sleeved on the second cover shell; a first limiting portion is provided at one end of the second cover shell, and a second limiting portion is provided at the other opposite end of the second cover shell. The first limiting portion and the second limiting portion are spaced apart in the sliding direction of the second cover shell relative to the first cover shell. The first limiting portion is accommodated in the accommodating space, and the second limiting portion is exposed outside the first cover shell. The first limiting portion and the second limiting portion are used to limit the movement range of the second cover shell relative to the first cover shell.

5. The electronic device according to claim 4, characterized in that The first cover shell has an opening for the second cover shell to enter and exit. The second cover shell has a first state and a second state in the first cover shell. In the first state, the second cover shell extends out of the accommodating space, and the first limiting portion abuts the opening; in the second state, the second cover shell is accommodated in the accommodating space, and the second limiting portion abuts the opening.

6. The electronic device according to claim 1, wherein: The first cover is fixedly connected to one of the first shell and the second shell, and the second cover is fixedly connected to the other of the first shell and the second shell.

7. The electronic device according to claim 6, wherein: In a direction perpendicular to the movement of the first shell relative to the second shell, two speakers are arranged at intervals, one of the speakers is arranged at one end of the flexible screen module, and the other speaker is arranged at the other opposite end of the flexible screen module.

8. The electronic device according to claim 7, wherein: This includes any of the following options: The electronic device includes a power amplifier driving unit, and the two speakers are communicatively connected to the power amplifier driving unit; The electronic device includes two power amplifier drive units, and the two power amplifier drive units correspond to the two speakers in a one-to-one manner and are communicatively connected.

9. The electronic device according to any one of claims 1 to 8, 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, and the free part 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 and the electroacoustic module are both communicatively connected to the processor, and the processor is used to control the external sound parameters of the electroacoustic module according to the rotation angle.

10. The electronic device according to any one of claims 1 to 8, characterized in that: The electronic device includes a sensor, a drive mechanism, and a processor. The sensor and the drive mechanism are both in communication with the processor. The sensor is connected to at least one of the first housing and the second housing and is used to detect the length of the second housing extending from the first housing. The drive mechanism is used to drive the second housing to move relative to the first housing. The processor is configured to: Determining whether the length is less than a preset value; as well as When the length is less than the preset value, the control circuit of the driving mechanism is disconnected.

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