Electronic equipment

Abstract

The invention provides electronic equipment, relates to the technical field of electronic products, and can improve the low-frequency performance of the electronic equipment. The electronic equipment comprises a shell, a first device and a loudspeaker module. The housing is provided with a sound hole. The loudspeaker module is arranged in the shell, the loudspeaker module comprises a shell part and an inner core arranged in the shell part, the shell part comprises a front shell and a rear cover, the inner core comprises a vibrating diaphragm, the vibrating diaphragm and the front shell define a front cavity, and the front cavity is communicated with the sound outlet hole. The rear cover is located on the side, back to the front cavity, of the vibrating diaphragm, and the rear cover is provided with at least one through hole.

Description

Electronic device TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic products, and in particular to an electronic device. BACKGROUND

[0002] In electronic devices such as mobile phones, tablets and laptops, there is a loudspeaker module for converting audio electrical signals into sound signals for output, supporting the function of audio playback.

[0003] When using an electronic device, the low-frequency performance of the loudspeaker module is crucial to the user experience. The better the low-frequency performance, the better the sound quality, and the better the user experience. However, in the prior art, the low-frequency performance of the loudspeaker module still has room for improvement.

[0004] SUMMARY

[0005] The present application provides an electronic device that can improve the low-frequency performance of the electronic device.

[0006] To achieve the above-mentioned purpose, the present application provides an electronic device, which comprises a shell and a loudspeaker module. The shell is provided with a sound hole. The loudspeaker module is arranged in the shell, and the loudspeaker module comprises a shell part and a core arranged in the shell part. The shell part comprises a front shell and a back cover, and the core comprises a diaphragm. The diaphragm and the front shell form a front cavity, and the front cavity is in communication with the sound hole. The back cover is located on the side of the diaphragm opposite to the front cavity, and the back cover is provided with at least one through hole.

[0007] When the diaphragm vibrates, it can drive the air in the front cavity to vibrate to form a sound signal that is discharged from the sound hole. At the same time, since the back cover is provided with at least one through hole, the loudspeaker module forms an open rear cavity, and at least part of the rear cavity of the loudspeaker module can be formed by means of at least part of the space in the shell, so as to improve the low-frequency performance of the loudspeaker module.

[0008] Optionally, the shell comprises a battery cover. The electronic device further comprises a first device and a first buffer part. The first device is arranged in the shell. The first buffer part is arranged between the first device and the battery cover, and part of the first buffer part between the first device and the battery cover is in communication with part of the rear cavity space between the diaphragm and the back cover via the at least one through hole. In this way, part of the first buffer part between the first device and the battery cover can increase the volume of the rear cavity of the loudspeaker module, thereby improving the low-frequency performance of the loudspeaker module.

[0009] Optionally, the first buffer part can comprise an air gap or a soft elastic material such as foam. The thickness of the first buffer part can be compressed to allow the battery cover to bend and deform towards the first device under external force.

[0010] Optionally, the first device can comprise a battery.

[0011] Optionally, the electronic device further comprises a second device, at least part of the second device is located between the first device and the first buffer portion, the surface of the first device facing the battery cover is a first surface, the projection area of the second device on the first surface is a first area, the area of the first area is smaller than the area of the first surface, and the area of the first surface outside the first area is a second area. The first buffer portion comprises a first elastic material layer and a second elastic material layer. At least part of the first elastic material layer is arranged between the second device and the battery cover, at least part of the second elastic material layer is arranged between the second area and the battery cover, and the thickness of the second elastic material layer in the free state is greater than the thickness of the first elastic material layer in the free state. In this way, by arranging the first elastic material layer and the second elastic material layer with different thicknesses, and arranging at least part of the first elastic material layer with smaller thickness between the second device and the battery cover, and at least part of the second elastic material layer with larger thickness between the second area and the battery cover, the uniformity of the top pressure of the first buffer portion on the battery cover can be improved to a certain extent, and the vibration of the battery cover can be reduced. At the same time, the thickness of the first elastic material layer and the second elastic material layer can be designed respectively to control the top pressure of the first buffer portion on the battery cover within a reasonable range, so as to reduce the design difficulty, reduce the vibration of the battery cover, and prevent the battery cover from being delaminated from the frame.

[0012] Optionally, the second elastic material layer is arranged along the circumference of the first elastic material layer. In this way, the first elastic material layer and the second elastic material layer are distributed in a character shape, which can adapt to the scenario that the second device passes through the middle part of the first surface, and in this scenario, the distribution uniformity of the first elastic material layer and the second elastic material layer on the first surface is relatively good, which is beneficial to improve the distribution uniformity of the top pressure of the first buffer portion on the battery cover.

[0013] Optionally, at least one hollow hole is arranged on the first elastic material layer. In this way, under the premise that the material area of the first elastic material layer is constant, the first elastic material layer can be distributed in a larger range on the second device by arranging the hollow hole, so as to improve the distribution uniformity of the top pressure of the first elastic material layer on the battery cover.

[0014] Optionally, the first elastic material layer includes a first elastic material part and a second elastic material part. The first elastic material part is a part of the first elastic material layer between the second device and the battery cover, and the second elastic material part is a part of the first elastic material layer between the second area and the battery cover. The first elastic material part has a first area of a normal projection on the first surface, and the second elastic material part has a second area of a normal projection on the first surface. The sum of the first area and the second area is greater than or equal to 30% and less than or equal to 60% of the area of the first area. The first area is greater than or equal to 80% of the sum of the first area and the second area. In this way, the area of the first elastic material layer is moderate, which can improve the uniformity of the top pressure of the battery cover by the first elastic material layer to a certain extent, and control the resultant force of the top pressure of the battery cover by the first elastic material layer in a reasonable range to prevent the battery cover from being delaminated from the middle frame.

[0015] Optionally, the second elastic material layer includes a third elastic material part and a fourth elastic material part. The third elastic material part is a part of the second elastic material layer between the second device and the battery cover, and the fourth elastic material part is a part of the second elastic material layer between the second area and the battery cover. The third elastic material part has a third area of a normal projection on the first surface, and the fourth elastic material part has a fourth area of a normal projection on the first surface. The sum of the third area and the fourth area is greater than or equal to 20% and less than or equal to 50% of the area of the second area, and the third area is greater than or equal to 40% and less than or equal to 60% of the sum of the third area and the fourth area. In this way, the area of the second elastic material layer is moderate, which can improve the uniformity of the top pressure of the battery cover by the second elastic material layer to a certain extent, and control the resultant force of the top pressure of the battery cover by the second elastic material layer in a reasonable range to prevent the battery cover from being delaminated from the middle frame.

[0016] Optionally, the ratio of the thickness of the second elastic material layer to the thickness of the first elastic material layer is greater than or equal to 1 and less than or equal to 3. In this way, it is beneficial to reduce the difference between the unit area top pressure of the battery cover by the second elastic material layer and the unit area top pressure of the battery cover by the first elastic material layer, and to improve the distribution uniformity of the top pressure of the battery cover by the first buffer part.

[0017] Optionally, the materials of the first elastic material layer and the second elastic material layer include foam.

[0018] Optionally, the electronic device further includes a first adhesive layer and a second adhesive layer. The first adhesive layer and the second adhesive layer can be back adhesive or dispensing adhesive. The first adhesive layer is arranged between the first elastic material layer and the battery cover. The second adhesive layer is arranged between the second elastic material layer and the battery cover. In this way, the first elastic material layer and the second elastic material layer are fixedly attached to the battery cover, and the stability is better.

[0019] Optionally, the electronic device further comprises a flexible heat sink, a portion of the flexible heat sink is arranged between the second device and the first buffer portion, and another portion of the flexible heat sink is arranged between the second region of the first device and the first buffer portion.

[0020] Optionally, the electronic device further comprises a third device. The third device is arranged in the housing and located at the side of the first device; a second buffer portion is arranged between the third device and the battery cover, and a portion of the second buffer portion between the third device and the battery cover also communicates with the portion of the rear cavity space between the diaphragm and the rear cover through the at least one through hole. In this way, the rear cavity volume of the loudspeaker module can be increased to a certain extent by means of the portion of the second buffer portion between the third device and the battery cover, and the low-frequency performance of the loudspeaker module can be further improved.

[0021] Optionally, the second buffer portion comprises a third elastic material layer. The material of the third elastic material layer is a soft elastic material, which can be, for example, foam, silica gel, sponge, etc. The third elastic material layer can fill the portion of the gap between the third device and the battery cover, and the volume of the rear cavity can be controlled within a certain range to improve the low-frequency performance of the loudspeaker module.

[0022] Optionally, the third elastic material layer and the second elastic material layer are integrally formed. In this way, the number of components of the electronic device can be reduced, and the assembly difficulty can be reduced.

[0023] Optionally, the electronic device further comprises a fourth device, at least a portion of the fourth device is arranged between the third elastic material layer and the third device. The second buffer portion further comprises a fourth elastic material layer, at least a portion of the fourth elastic material layer is arranged between the fourth device and the third device. The height of the portion of the fourth device opposite to the third device can be raised by means of the fourth elastic material layer, the bending amount of the connecting part of the fourth device between the first surface and the second surface can be reduced, and the damage risk of the fourth device can be reduced.

[0024] Optionally, the third elastic material layer comprises a fifth elastic material portion and a sixth elastic material portion arranged along a first direction. The fifth elastic material portion is arranged between the battery cover and the fourth device, and the sixth elastic material portion is located outside the orthographic projection of the third device on the fourth device. The fourth elastic material layer comprises a seventh elastic material portion and an eighth elastic material portion arranged along the first direction; the seventh elastic material portion is arranged between the fourth device and the third device, and the eighth elastic material portion is arranged between the sixth elastic material portion and the third device. The first direction is the length direction of the edge of the first device facing the third device. In this way, the larger gap between the third device and the battery cover can be filled by means of the third elastic material layer and the fourth elastic material layer, and the volume of the rear cavity of the loudspeaker module can be further controlled to improve the low-frequency performance of the loudspeaker module.

[0025] Optionally, the electronic device further comprises a third adhesive layer, the third adhesive layer is arranged between the third elastic material layer and the battery cover. In this way, the third elastic material layer can be prevented from being misaligned.

[0026] Optionally, the electronic device further comprises a fourth adhesive layer, the fourth adhesive layer is arranged between the fourth elastic material layer and the fourth device. In this way, the fourth elastic material layer can be prevented from being misaligned.

[0027] Optionally, the third device comprises a battery protection plate.

[0028] Optionally, the electronic device further comprises a first support. The first support is arranged in the shell and fixedly connected with the shell. A through hole is arranged between the first support and the shell. Part of the second device is arranged in the through hole. A fifth adhesive layer is arranged between the first support and the battery cover. The battery cover is bonded to the first support by means of the fifth adhesive layer, so as to further prevent the battery cover from vibrating.

[0029] Optionally, the electronic device further comprises a second electronic component. The second electronic component is arranged on opposite sides of the first device with respect to the first support. A third buffer part is arranged between the second electronic component and the battery cover. The third buffer part is made of soft elastic material. The third buffer part is used to apply a top pressure to the battery cover, so as to further prevent the battery cover from vibrating.

[0030] Optionally, the shell comprises a first shell, a second shell, and a rotating shaft mechanism connected between the first shell and the second shell. The battery cover is part of the second shell. At least part of the first device, the second device, the loudspeaker module, the first support, and the second electronic component are arranged in the second shell.

[0031] Optionally, when the electronic device is in an unfolded state, the electronic device has a rectangular plate shape. The first shell, the rotating shaft mechanism, and the second shell are arranged along the length direction of the electronic device.

[0032] Optionally, the rear cover is provided with a mesh structure. The mesh holes of the mesh structure form through holes. The mesh structure can realize space communication, and at the same time, the mesh structure can prevent sundries from entering the shell part.

[0033] Optionally, the acoustic impedance of the mesh structure is less than or equal to 800 rayls, and the effective area of the mesh structure is greater than or equal to 3 mm 2 . In this way, the effective communication between the inner and outer rear cavities of the shell part can be realized, and the low-frequency performance of the loudspeaker module can be improved.

[0034] Optionally, the electronic device further comprises an earpiece. The earpiece is applied to a private listening scene, such as a telephone call. Compared with the earpiece, the loudspeaker module in the present application supports the function of audio external output, and is applied to a scene requiring greater output sound than the earpiece, such as voice hands-free, music playing, conference amplification, public broadcasting, etc. BRIEF DESCRIPTION OF DRAWINGS

[0035] FIG. 1 is a perspective view of an electronic device in an unfolded state according to some embodiments of the present application;

[0036] FIG. 2 is a perspective view of the electronic device of FIG. 1 in a half-folded state;

[0037] FIG. 3 is a perspective view of the electronic device of FIG. 1 in a folded state;

[0038] FIG. 4 is an exploded structural view of the electronic device of FIG. 1;

[0039] FIG. 5a is an exploded structural view of an inner housing of the electronic device of FIG. 4 and electronic components housed in the inner housing;

[0040] FIG. 5b is a structural view of an inner surface of a battery cover of the electronic device of FIG. 5a;

[0041] FIG. 6a is a perspective view of a speaker module of the electronic device of FIG. 5a;

[0042] FIG. 6b is an exploded structural view of the speaker module of FIG. 6a;

[0043] FIG. 6c is a cross-sectional view of the speaker module of FIG. 6a along A-A;

[0044] FIG. 7a is a perspective view of a core of the speaker module of FIGS. 6a-6c;

[0045] FIG. 7b is a cross-sectional view of the core of FIG. 7a along B-B;

[0046] FIG. 8 is a cross-sectional structural view of the electronic device of FIG. 4 along C-C;

[0047] FIG. 9a is a view of a relative positional relationship between a first component and a second component of the electronic device of FIG. 5a;

[0048] FIG. 9b is a view of a relative position of a first area of the component of FIG. 9a on a first surface;

[0049] FIG. 10a is a structural view of the electronic device of FIGS. 10a-10c when a battery cover is opened;

[0050] FIG. 10b is an exploded structural view of the electronic device of FIG. 10a;

[0051] FIG. 10c is a cross-sectional structural view of the electronic device of FIG. 10a along D-D;

[0052] FIG. 11a is a view of a relative positional relationship between a first component, a second component, and a first buffer portion of the electronic device of FIGS. 10a-10c;

[0053] Fig. 11b is a schematic diagram of a detailed structure of the second device in the assembly structure shown in Fig. 11a;

[0054] Fig. 12 is a schematic diagram of an assembly structure of the first device, the first buffer part, the second buffer part, the second device and the fourth device in the electronic device shown in Fig. 10b;

[0055] Fig. 13 is a schematic diagram of an exploded structure of the assembly structure shown in Fig. 12.

[0056] 10, electronic device; 1, inner screen; 2, outer screen; 3, shell; 31, first shell; 32, second shell; 321, battery cover; 322, middle frame; 3221, middle plate; 3222, side frame; 33, rotating shaft mechanism; 4, first device; 5, loudspeaker module; 51, shell part; 511, front shell; 511a, top wall; 511b, side frame; 512, back cover; 52, inner core; 521, basket; 522, diaphragm; 522a, dome; 522b, diaphragm body; 522b1, folded ring; 523, driving assembly; 523a, voice coil; 523b, magnetic circuit system; Q1, front cavity; Q2, back cavity; 53, communication structure; A, sound outlet channel; B, sound outlet hole; F1, second device; N1, first electronic component; N2, second electronic component; G1, first orthographic projection; G2, second orthographic projection; S1, first surface; S11, first region; S12, second region; g1, first buffer part; g11, first elastic material layer; g111, first elastic material part; g112, second elastic material part; g12, second elastic material layer; g121, third elastic material part; g122, fourth elastic material part; k1, first glue layer; k2, second glue layer; 6, flexible heat sink; 7, third device; g2, second buffer part; g21, third elastic material layer; g211, fifth elastic material part; g212, sixth elastic material part; g22, fourth elastic material layer; g221, seventh elastic material part; g222, eighth elastic material part; S2, second surface; Y1, first direction; k3, third glue layer; k4, fourth glue layer; F2, fourth device; N3, third electronic component; 8, first support; k5, fifth glue layer; g3, elastic limiting structure; k6, sixth glue layer; g4, third buffer part; k7, seventh glue layer; 9, second support. DETAILED DESCRIPTION

[0057] In the embodiments of the present application, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", and "eighth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh", and "eighth" can explicitly or implicitly include one or more of the features.

[0058] In the embodiments of the present application, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0059] The present application provides an electronic device, which is a kind of device with audio external function. Specifically, the electronic device can be a user equipment (UE) or a terminal device, etc. For example, the electronic device can be a portable android device (PAD), a notebook computer, a television, an all-in-one machine, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, a vehicle-mounted device, a smart wearable device, a service robot, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart city, a wireless terminal in smart home, etc. The following embodiments are exemplarily described with the electronic device as a folding screen device, which can be a folding screen mobile phone, for example.

[0060] Please refer to FIGS. 1-3, FIG. 1 is a perspective view of an electronic device 10 in an unfolded state according to some embodiments of the present application, FIG. 2 is a perspective view of the electronic device 10 in a half-folded state according to some embodiments of the present application, and FIG. 3 is a perspective view of the electronic device 10 in a folded state according to some embodiments of the present application.

[0061] The electronic device 10 includes an inner screen 1, an outer screen 2, and a housing 3.

[0062] It can be understood that FIGS. 1-3 only schematically show some components included in the electronic device 10, and actual shapes, actual sizes, actual positions, and actual structures of the components are not limited by FIGS. 1 and 2. In some other embodiments, the electronic device 10 can also not be provided with the inner screen 1 or the outer screen 2.

[0063] In addition, when the electronic device 10 is in the unfolded state, the electronic device 10 is in a rectangular plate shape. Based on this, in order to facilitate the description of each of the embodiments below, an XYZ coordinate system is established for the electronic device 10 in the unfolded state, and the width direction of the electronic device 10 is specifically defined as the X-axis direction, the length direction of the electronic device 10 is specifically defined as the Y-axis direction, and the thickness direction of the electronic device 10 is specifically defined as the Z direction. It can be understood that the coordinate system of the electronic device 10 can be flexibly set according to actual needs, which is not specifically limited here. Of course, in some other embodiments, the electronic device 10 in the unfolded state can also be in a square plate shape, a circular plate shape, an elliptical plate shape, and the like, which is not specifically limited by the present application.

[0064] The inner screen 1 is used to realize a large-screen display function when the electronic device 10 is in the unfolded state. The inner screen 1 can be a flexible screen, for example, the inner screen 1 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode screen, or a quantum dot light emitting diode (QLED) screen. The outer screen 2 is used to realize a small-screen display when the electronic device 10 is in the folded state. The outer screen 2 can be a hard screen, for example, the outer screen 2 can be a liquid crystal display (LCD).

[0065] The shell 3 is used to support the inner screen 1 and the outer screen 2, and allow the electronic device 10 to switch between the folded state and the unfolded state.

[0066] The shell 3 can include a first shell 31, a second shell 32, and a rotating shaft mechanism 33 connected between the first shell 31 and the second shell 32. When the electronic device 10 is in the unfolded state, referring to FIG. 1, the first shell 31, the rotating shaft mechanism 33, and the second shell 32 can be arranged in sequence along the Y-axis, and the rotating shaft mechanism 33 extends along the X-axis direction. In this way, the electronic device 10 is a vertical folding folding screen device. In some other embodiments, when the electronic device 10 is in the unfolded state, the first shell 31, the rotating shaft mechanism 33, and the second shell 32 can also be arranged in sequence along the X-axis, and the rotating shaft mechanism 33 extends along the Y-axis direction. In this way, the electronic device 10 is a horizontal folding folding screen device.

[0067] Part of the inner screen 1 is supported by the first housing 31, another part is supported by the second housing 32, and another part is supported by the rotation mechanism 33. The outer screen 2 is arranged on the side of the first housing 31 opposite to the inner screen 1.

[0068] The rotation mechanism 33 is used to enable relative rotation between the first housing 31 and the second housing 32, so as to change the included angle θ between the part of the inner screen 1 supported by the first housing 31 and the part supported by the second housing 32 on the display side of the inner screen 1, thereby realizing switching between the folded state and the unfolded state of the electronic device 10. The display side of the inner screen 1 refers to the side toward which the display surface of the inner screen 1 faces, and the display surface of the inner screen 1 refers to the surface on which the inner screen displays videos or images.

[0069] In some embodiments, referring to FIG. 1, when the included angle θ is substantially equal to 180°, the inner screen 1 and the electronic device 10 are in the unfolded state. In this way, large-screen display can be realized by means of the inner screen 1, so as to bring richer visual effects to the user. When the included angle θ is substantially equal to 0°, referring to FIG. 3, the inner screen 1 and the electronic device 10 are in the folded state. In this way, the housing 3 is protected outside the inner screen 1, avoiding pollution or scratching of the inner screen 1, and the size of the electronic device 10 is smaller, facilitating carrying. Referring to FIG. 3, when the electronic device 10 is in the folded state, the outer screen 2 is exposed, and small-screen display can be realized by means of the outer screen 2. When the included angle θ is an angle value between 0° and 180°, referring to FIG. 2, the electronic device 10 is in a semi-folded state.

[0070] Referring to FIG. 4 and FIG. 5a, FIG. 4 is an exploded structural schematic diagram of the electronic device 10 shown in FIG. 1, and FIG. 5a is an exploded structural schematic diagram of the inner housing 3 of the electronic device 10 shown in FIG. 4 and the electronic components accommodated in the housing 3.

[0071] The first housing 31 can be provided with electronic components such as a receiver, a battery, a camera module, etc. The receiver can also be arranged on the second housing 32 or other positions, which is not limited in the present application. The receiver is mainly applied to scenes requiring private listening, such as telephone calls, etc. The user hopes that the sound can be directly transmitted into the ear and not heard by others.

[0072] The second housing 32 can include a battery cover 321. The battery cover 321 is used to protect the first device 4. In some embodiments, the battery cover 321 can be detachably connected with other parts of the second housing 32, so as to facilitate opening of the battery cover 321 for replacement or maintenance of the first device 4. The material of the battery cover 321 includes but is not limited to plastic, glass, ceramic and metal.

[0073] In some embodiments, referring to FIG. 4, the second housing 32 can further include a middle frame 322. The middle frame 322 is arranged between the inner screen 1 and the battery cover 321. The middle frame 322 serves as a support skeleton for the electronic components in the second housing 32. The rotating shaft mechanism 33 can be connected between the middle frame 322 of the second housing 32 and the first housing 31.

[0074] In some embodiments, referring to FIG. 5a, the middle frame 322 can include a middle plate 3221 and a bezel 3222 arranged at the edge of the middle plate 3221. The bezel 3222, together with the inner screen 1 and the battery cover 321, forms a receiving space for receiving the middle plate 3221 and part of the electronic components of the electronic device 10.

[0075] It should be noted that when the electronic device 10 is other folding screen device or other product except folding screen device, the housing 3 can not be limited to the structure shown in FIG. 4 and FIG. 5a, as long as the housing 3 includes the battery cover 321, and the structure of the housing 3 of the present application is not specifically limited.

[0076] In some embodiments, referring to FIG. 5a, the electronic device 10 can further include a first device 4. The first device 4 can be received in the receiving space of the second housing 32. For example, the first device 4 can include a battery. In other examples, the first device 4 can also be a circuit board or a support, etc. The present application exemplarily illustrates the first device 4 as a battery, which cannot be considered as a special limitation to the present application. The first device 4 is used to provide power to the electronic components in the electronic device 10. The first device 4 can be a lithium ion battery, an alkaline battery, a nickel-cadmium battery, a nickel-hydrogen battery, or a lead-acid battery, etc. The present application exemplarily illustrates the first device 4 as a lithium ion battery, which has a higher energy density and a longer battery life.

[0077] In some embodiments, referring to FIG. 5a, the first device 4 can be in the shape of a rectangular plate to make full use of the internal space of the second housing 32. In other embodiments, the first device 4 can also be in the shape of a circular plate, a triangular plate, a rhombic plate, etc., which is not specifically limited in the present application.

[0078] The first device 4 and the battery cover 321 have a first buffer portion g1 therebetween. The thickness of the first buffer portion g1 can be compressed to allow the battery cover 321 to be bent and deformed towards the first device 4 under external force. The first buffer portion g1 can include a gap or a soft elastic material such as foam, which is exemplarily illustrated in FIG. 5a. The first buffer portion g1 is used to buffer external force and reduce the probability of the battery cover 321 being pressed and damaged to the first device 4 under external force.

[0079] In some embodiments, referring to FIG. 5b, which is a structural diagram of an inner surface of the battery cover 321 of the electronic device 10 shown in FIG. 5a, the first device 4 has a first orthographic projection G1 on the battery cover 321, and the first buffer portion g1 has a second orthographic projection G2 on the battery cover 321. The area of the first orthographic projection G1 is smaller than the area of the second orthographic projection G2, and the first orthographic projection G1 is located within the second orthographic projection G2. In this way, the first buffer portion g1 covers the entire first device 4, and the probability of the battery cover 321 impacting any part of the first device 4 can be reduced.

[0080] In some embodiments, referring to FIG. 5a, the electronic device 10 can further include a speaker module 5. The speaker module 5 is also accommodated in the accommodation space of the second housing 32. The speaker module 5 is used to convert an audio electrical signal into an acoustic signal output. It should be noted that the speaker module 5 described in the embodiments of the present application is different from a receiver, and is used to support the function of audio external output, and is applied to scenarios that require louder sound output than the receiver, such as voice hands-free, music playing, conference amplification, public broadcasting, etc. In these scenarios, the speaker can amplify and propagate sound to a farther distance for multiple people to share, or the user does not need to hold the electronic device close to the ear, so as to free the hands.

[0081] Referring to FIGS. 6a-6c, FIG. 6a is a perspective view of the speaker module 5 in the electronic device 10 shown in FIG. 5a, FIG. 6b is an exploded structural diagram of the speaker module 5 shown in FIG. 6a, and FIG. 6c is a perspective sectional view of the speaker module 5 along the A-A direction shown in FIG. 6a.

[0082] The speaker module 5 includes a shell portion 51 and a core 52. The shell portion 51 is used to protect the core 52, and forms a front cavity and a rear cavity of the speaker module 5 together with the core 52 to achieve conversion of an audio electrical signal into an acoustic signal.

[0083] In some embodiments, the shell portion 51 can include a front shell 511 and a rear cover 512. The front shell 511 includes a top wall 511a and a side frame 511b arranged around the top wall 511a. The side frame 511b is provided with a sound outlet channel A. Referring back to FIGS. 4 and 5a, the side frame 3222 is provided with a sound hole B, and the sound outlet channel A is opposite and communicates with the sound hole B. The rear cover 512 is arranged at an opening of the side frame 511b opposite to the top wall 511a, and the rear cover 512 can be adhesively fixed with the side frame 511b. In this way, the shell portion 51 is assembled by the front shell 511 and the rear cover 512, and the core 52 can be conveniently installed in the shell portion 51. Of course, in other embodiments, the shell portion 51 can also be an integral structure, which is not limited in the present application.

[0084] The inner core 52 is arranged in the shell part 51. Referring to FIGS. 7a and 7b, FIG. 7a is a perspective view of the inner core 52 in the loudspeaker module 5 shown in FIGS. 6a-6c, and FIG. 7b is a sectional view of the inner core 52 along the direction of B-B in FIG. 7a. The inner core 52 can include a basket 521, a diaphragm 522, and a driving assembly 523.

[0085] The diaphragm 522 is supported on the basket 521. The diaphragm 522 can include a dome 522a and a diaphragm body 522b connected between the dome 522a and the basket 521. The dome 522a can be in the form of a flat plate or a convex spherical sheet. In this embodiment, the dome 522a is exemplarily described as being in the form of a flat plate. The diaphragm body 522b can include a folded ring 522b1 arranged around the dome 522a. The folded ring 522b1 is in the form of an arc or approximately in the form of an arc, and can be arched away from the driving assembly 523 or arched towards the driving assembly 523. FIGS. 7a and 7b exemplarily describe the folded ring 522b1 as being arched towards the driving assembly 523, which should not be considered as a special limitation to the present application. The folded ring 522b1 can be deformed when subjected to an external force, so that the dome 522a can vibrate relative to the basket 521 in the direction of the Z-axis. The driving assembly 523 is connected between the dome 522a and the basket 521, and is configured to drive the dome 522a to vibrate relative to the basket 521 in the direction of the Z-axis.

[0086] In some embodiments, referring to FIG. 7b, the driving assembly 523 can include a voice coil 523a and a magnetic circuit system 523b. The voice coil 523a is arranged on the dome 522a, and the magnetic circuit system 523b is arranged on the basket 521. When alternating current is supplied into the voice coil 523a, the voice coil 523a cooperates with the magnetic circuit system 523b to drive the dome 522a to vibrate relative to the basket 521 in the direction of the Z-axis.

[0087] The driving assembly 523 is a moving-coil type driving assembly, which has a simple structure and high vibration stability. Of course, the driving assembly 523 can also have other structural forms, such as an electrostatic type driving assembly, an electromagnetic type driving assembly, or a piezoelectric type driving assembly, which are not limited in the present application.

[0088] When the inner core 52 is applied to the speaker module 5, please refer to FIG. 6c and FIG. 7a, the diaphragm 522 and the shell part 51 form a front cavity Q1. In some embodiments, the front cavity Q1 can be formed between the diaphragm 522 and the front shell 511 of the shell part 51. Specifically, the front cavity Q1 can be formed between the diaphragm 522 and the top wall 511a of the front shell 511. In other embodiments, the top wall 511a can be provided with a through hole communicating the inside and outside of the shell part 51, the diaphragm 522 covers one end opening of the through hole in the inside of the shell part 51, and the front cavity Q1 can be formed in the through hole. In this way, the front cavity Q1 is an open front cavity.

[0089] The front cavity Q1 is in communication with the sound outlet channel A. When the inner core 52 is working, the driving assembly 523 drives the diaphragm 522 to vibrate, which can push the air in the front cavity to vibrate to form a sound signal. The sound signal is output by the sound outlet channel A and transmitted to the user through the sound hole B.

[0090] The side of the diaphragm 522 opposite to the front cavity Q1 is provided with a rear cavity Q2. The rear cavity Q2 can be a closed space, and the rear cavity Q2 can be located entirely inside the shell part 51. However, it is known to those skilled in the art that the larger the volume of the rear cavity Q2 of the speaker module 5 is within a certain range, the better the low-frequency performance is. With the development of electronic devices 10 towards thinness, small size and diversified functions, the size of the speaker module 5 is small, and the internal space of the shell part 51 is limited. Therefore, the volume of the rear cavity Q2 formed by the internal space of the shell part 51 is small, which cannot effectively improve the low-frequency performance.

[0091] To solve the above problems, in the embodiments shown in FIG. 6a-6c, please refer to FIG. 6b and FIG. 6c, the shell part 51 is provided with at least one through hole. For example, the at least one through hole can be provided on the back cover 512. Specifically, an opening can be provided on the back cover 512, the opening forms a through hole, or a mesh structure 53 can be provided on the back cover 512, the mesh holes of the mesh structure 53 form a through hole, or a porous structure such as sponge or foam can be provided on the back cover 512, the micropores in the porous structure form a through hole. The present application is exemplarily described by providing the mesh structure 53 on the back cover 512, and the mesh holes of the mesh structure 53 form a through hole. The mesh structure can realize space communication, and at the same time, the mesh structure can prevent sundries from entering the shell part 51. The number of the mesh structure 53 can be one or more, and the present application is exemplarily described by taking the number of the mesh structure 53 as two. The through hole communicates the space on the side of the diaphragm 522 opposite to the front cavity Q1 with the external space of the shell part 51. In this way, the speaker module 5 forms an open rear cavity, and when the speaker module 5 is installed in the second shell body 32, the rear cavity of the speaker module 5 can be formed by at least part of the space in the second shell body 32 to improve the low-frequency performance of the speaker module 5.

[0092] It should be noted that the space on the side of the diaphragm 522 opposite the front cavity Q1 refers to a part of the space on the side of the diaphragm 522 opposite the front cavity Q1 and adjacent to the diaphragm 522, which belongs to at least part of the rear cavity Q2 of the loudspeaker module 5.

[0093] In some embodiments, referring to FIG. 6c, the space on the side of the diaphragm 522 opposite the front cavity Q1 can be located in the shell part 51. In this way, the rear cavity Q2 of the loudspeaker module 5 includes the space on the side of the diaphragm 522 opposite the front cavity Q1 and the external space of the shell part 51, that is, part of the rear cavity Q2 is located in the shell part 51 and part of the rear cavity Q2 is located outside the shell part 51.

[0094] In other embodiments, the space on the side of the diaphragm 522 opposite the front cavity Q1 can also be located outside the shell part 51. That is, the shell part 51 is entirely open on the side of the diaphragm 522 opposite the front cavity Q1 to form an open hole, and the open hole forms a through hole. In this way, there is no rear cavity space in the shell part 51, which can reduce the volume of the loudspeaker module 5.

[0095] The following embodiments are further descriptions based on the space on the side of the diaphragm 522 opposite the front cavity Q1 being located in the shell part 51 and the through hole being formed by the mesh holes of the mesh structure 53, which cannot be considered as a special limitation to the present application.

[0096] In some embodiments, the acoustic impedance of the mesh structure 53 can be less than or equal to 800 rayls. For example, the acoustic impedance of the mesh structure 53 can be 10 rayls, 20 rayls, 30 rayls, 40 rayls, 50 rayls, 100 rayls, 150 rayls, 180 rayls, 200 rayls, 250 rayls, 300 rayls, 350 rayls, 400 rayls, 450 rayls, 500 rayls, 550 rayls, 600 rayls, 650 rayls, 700 rayls, 750 rayls, 800 rayls. Moreover, the effective area of the mesh structure 53 can be greater than or equal to 3 mm 2 . Alternatively, the effective area of the mesh structure 53 can be 3 mm 2 , 4 mm 2 , 5 mm 2 , 6 mm 2 , 7 mm 2 , 8 mm 2 , 9 mm 2 or 10 mm 2and so on. Among them, the effective area of the mesh structure 53 refers to the area of the part of the mesh structure 53 that actually plays a role of connecting the back cavities of the two parts of the shell 51. In this way, the effective connection of the back cavities of the two parts of the shell 51 can be achieved, and the low-frequency performance of the loudspeaker module 5 can be improved.

[0097] In some embodiments, referring to FIG. 8, which is a schematic diagram of the cross-sectional structure of the electronic device 10 along the C-C direction shown in FIG. 4. The part of the first buffer portion g1 between the first device 4 and the battery cover 321 is in communication with the part of the back cavity between the diaphragm 522 and the back cover 512 via at least one through hole on the back cover 512. Among them, the part of the first buffer portion g1 between the first device 4 and the battery cover 321 refers to the part of the first buffer portion g1 whose orthographic projection on the battery cover 321 coincides with the first orthographic projection G1 (see FIG. 5b), that is, the part of the first buffer portion g1 within the dashed box M shown in FIG. 8. The space on the side of the diaphragm 522 opposite to the front cavity Q1 is in communication with the part of the first buffer portion g1, that is, the part of the first buffer portion g1 is in the back cavity Q2.

[0098] In this way, the part of the first buffer portion g1 between the first device 4 and the battery cover 321 can increase the volume of the back cavity of the loudspeaker module 5, thereby improving the low-frequency performance of the loudspeaker module 5.

[0099] Referring back to FIG. 5a, the edge of the battery cover 321 is fixed to the middle frame 322. For example, the edge of the battery cover 321 can be bonded to the edge frame 3222 by means of a glue layer c. At least a part (hereinafter referred to as the first part) of the battery cover 321 opposite to the first device 4 is suspended or approximately suspended. At the same time, in order to improve the endurance time of the first device, the size of the first device 4 in the XY plane is large, and the area of the part of the battery cover 321 opposite to the first device 4 is large, so that the structural strength of the first part of the battery cover 321 is low and is prone to deformation. In this way, when the loudspeaker module 5 is working, the diaphragm 522 is prone to push the air in the back cavity Q2 to move, causing the first part of the battery cover 321 to vibrate relative to the edge of the battery cover 321.

[0100] To solve the above problems, the first buffer portion g1 can be made of a soft elastic material with a uniform thickness, provided that the distance between the first device 4 and the battery cover 321 is constant. The thickness of the soft elastic material in a free state is greater than the height of the installation gap between the first device 4 and the battery cover 321, so that the soft elastic material remains in a compressed deformed state. Thus, the soft elastic material exerts a certain top pressure on the battery cover 321, which can prevent the battery cover 321 from deforming towards the first device 4 when the loudspeaker module 5 is working. Meanwhile, in practical applications, the thickness of the soft elastic material needs to be reasonably designed to control the top pressure of the soft elastic material on the battery cover 321 within a reasonable range, so as to avoid top pressing the battery cover 321 and causing the edge of the battery cover 321 to be delaminated from the frame 3222.

[0101] However, please continue to refer to FIG. 5a, the electronic device 10 further comprises a second device F1. At least part of the second device F1 is located between the first device 4 and the first buffer portion g1.

[0102] The second device F1 can be an electrical connection structure or a heat dissipation structure such as graphite. The present application exemplarily illustrates the second device F1 as an electrical connection structure. The second device F1 is used to electrically connect at least two electronic components. The second device F1 can be a flexible printed circuit (FPC) board, a printed circuit board (PCB), or a structure formed by weaving wires and flexible materials. The present application exemplarily illustrates the second device F1 as an FPC.

[0103] In some embodiments, the first housing 31 is provided with a first electronic component N1, and the second housing 32 is provided with a second electronic component N2. The second device F1 can be connected between the first electronic component N1 and the second electronic component N2.

[0104] The first electronic component N1 can be a main circuit board, and the second electronic component N2 can be a secondary circuit board; or the first electronic component N1 is a secondary circuit board, and the second electronic component N2 is a main circuit board. The present application does not make specific limitations thereto.

[0105] Please refer to FIG. 9a, which is a schematic diagram of the relative position relationship between the first component 4 and the second component F1 in the electronic device 10 shown in FIG. 5a. For the convenience of the description of the embodiments below, the surface of the first component 4 facing the battery cover 321 is defined as the first surface S1, and the area of the second component F1 in the orthographic projection of the first surface S1 is the first area. Please refer to FIG. 9b, which is a schematic diagram of the relative position of the first area S11 on the first surface S1 in the assembly shown in FIG. 9a. The area of the first area S11 is smaller than the area of the first surface S1, and the area of the first surface S1 outside the first area S11 is the second area S12. In this way, please refer to FIG. 5a, FIG. 9a and FIG. 9b, between the first area S11 and the battery cover 321, the first buffer portion g1 and the second component F1 have a thickness overlap; between the second area S12 and the battery cover 321, there is no overlap between the first buffer portion g1 and the second component F1. If the thickness of the first buffer portion g1 is small, the support force generated on the part of the battery cover 321 opposite to the second area S12 is small, and the battery cover 321 will still vibrate when the speaker module 5 is working. If the thickness of the first buffer portion g1 is large, the top pressure generated by the first buffer portion g1 and the second component F1 on the battery cover 321 is large, which can easily cause the battery cover 321 and the frame 3222 to be delaminated. Therefore, the design of the first buffer portion g1 is difficult, and it is difficult to simultaneously prevent vibration and delamination.

[0106] To solve the above problems, please refer to FIG. 10a-FIG. 10c, FIG. 10a is a schematic diagram of the structure of the electronic device 10 when the battery cover 321 is opened, FIG. 10b is a schematic diagram of the exploded structure of the electronic device 10 shown in FIG. 10a, and FIG. 10c is a schematic diagram of the cross-sectional structure of the electronic device 10 along the direction D-D. In this embodiment, the first buffer portion g1 can include a first elastic material layer g11 and a second elastic material layer g12.

[0107] The materials of the first elastic material layer g11 and the second elastic material layer g12 can include soft elastic materials. Optionally, the first elastic material layer g11 and the second elastic material layer g12 can include foam, rubber, sponge, etc. The present application is exemplarily described by taking the first elastic material layer g11 and the second elastic material layer g12 as foam, which cannot be considered as a special limitation to the present application.

[0108] At least part of the first elastic material layer g11 is arranged between the second device F1 and the battery cover 321, that is, the first elastic material layer g11 can be partially arranged between the second device F1 and the battery cover 321, or can be entirely arranged between the second device F1 and the battery cover 321. At least part of the second elastic material layer g12 is arranged between the second area S12 and the battery cover 321, that is, the second elastic material layer g12 can be partially arranged between the second area S12 and the battery cover 321, or can be entirely arranged between the second area S12 and the battery cover 321. The thickness of the second elastic material layer g12 in the free state is greater than the thickness of the first elastic material layer g11 in the free state. Wherein, the "free state" refers to the state not subjected to external force.

[0109] In this way, by arranging the first elastic material layer g11 and the second elastic material layer g12 with different thicknesses, and arranging at least part of the first elastic material layer g11 with smaller thickness between the second device F1 and the battery cover 321, and arranging at least part of the second elastic material layer g12 with larger thickness between the second area S12 and the battery cover 321, the uniformity of the top pressure of the first buffer portion g1 on the battery cover 321 can be improved to a certain extent, and the vibration of the battery cover 321 can be reduced. At the same time, the thicknesses of the first elastic material layer g11 and the second elastic material layer g12 can be designed respectively to control the top pressure of the first buffer portion g1 on the battery cover 321 within a reasonable range, so that the design difficulty can be reduced, and the vibration of the battery cover 321 can be reduced while preventing the battery cover 321 from being delaminated from the frame 3222.

[0110] It can be understood that the shape of the first elastic material layer g11, the shape of the second elastic material layer g12, and the relative position relationship between the first elastic material layer g11 and the second elastic material layer g12 affect the distribution uniformity of the top pressure of the first buffer portion g1 on the battery cover 321. The shape of the first elastic material layer g11, the shape of the second elastic material layer g12, and the relative position relationship between the first elastic material layer g11 and the second elastic material layer g12 make the more uniform the distribution of the first elastic material layer g11 and the second elastic material layer g12 on the first surface S1, the better the distribution uniformity of the top pressure of the first buffer portion g1 on the battery cover 321.

[0111] In some embodiments, please refer to FIG. 11a, which is a diagram of the relative position relationship between the first device 4, the second device F1 and the first buffer portion g1 in the electronic device 10 shown in FIGS. 10a-10c. The second elastic material layer g12 is arranged along the circumference of the first elastic material layer g11.

[0112] In this way, the first elastic material layer g11 and the second elastic material layer g12 are distributed in a U-shape, which can adapt to the scenario where the second device F1 passes through the middle of the first surface S1 in the X-axis direction. In this scenario, the distribution uniformity of the first elastic material layer g11 and the second elastic material layer g12 on the first surface S1 is better, which is beneficial to improving the distribution uniformity of the top pressure of the first buffer part g1 on the battery cover 321.

[0113] In some embodiments, the second elastic material layer g12 may be annular, such as a rectangular annular shape. The first elastic material layer g11 is disposed in the area surrounded by the second elastic material layer g12. Thus, the shape of the second elastic material layer g12 matches the shape of the first device 4, and the distribution uniformity of the second elastic material layer g12 on the first surface S1 is better, which is beneficial to improving the uniformity of the top pressure distribution of the first buffer portion g1 on the battery cover. Moreover, the second elastic material layer g12 is a single structural component, which can reduce the structural complexity and assembly difficulty of the first buffer portion g1. In other embodiments, the second elastic material layer g12 may also be annular, triangular annular, etc., and this application does not specifically limit this.

[0114] In some embodiments, referring to FIG11a, the shape of the first elastic material layer g11 can be approximately rectangular. This increases the coverage area of ​​the first elastic material layer g11 on the second device F1, effectively preventing vibration of the battery cover 321. In other embodiments, the shape of the first elastic material layer g11 can also be approximately triangular, circular, polygonal, etc., and this application does not specifically limit it in this regard.

[0115] In some embodiments, referring to FIG11a, at least one perforation h may be provided in the first elastic material layer g11. Optionally, the number of perforations h may be two, and the shape of the perforations may be rectangular, square, circular, polygonal, etc. In this application, a rectangular perforation h is used as an example for illustration. In this way, given a certain material area of ​​the first elastic material layer g11, by providing perforations h, the first elastic material layer g11 can be distributed over a larger area on the second device F1, thereby improving the uniformity of the top pressure distribution of the first elastic material layer g11 on the battery cover 321.

[0116] Understandably, the difference between the thickness of the first elastic material layer g11 and the thickness of the second elastic material layer g12 also affects the uniformity of the top pressure distribution of the first buffer part g1 on the battery cover 321.

[0117] In some embodiments, the ratio of the thickness of the second elastic material layer g12 to the thickness of the first elastic material layer g11 can be greater than or equal to 1 and less than or equal to 3. Optionally, the ratio can be 1, 1.2, 1.4, 1.5, 1.6, 1.8, 2, 2.2, 2.4, 2.6, 2.8 or 3. In this way, the difference between the top pressure of the unit area of the second elastic material layer g12 on the battery cover 321 and the top pressure of the unit area of the first elastic material layer g11 on the battery cover 321 can be reduced, and the distribution uniformity of the top pressure of the first buffer g1 on the battery cover 321 can be improved.

[0118] In some embodiments, the thickness of the first elastic material layer g11 can be greater than or equal to 0.3 mm and less than or equal to 0.5 mm. Optionally, the thickness of the first elastic material layer g11 can be 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm or 0.5 mm. In this way, the thickness of the first elastic material layer g11 is moderate, which can reduce the vibration of the battery cover 321 while preventing the battery cover 321 from being delaminated from the frame 3222.

[0119] In some embodiments, the thickness of the second elastic material layer g12 can be greater than or equal to 0.5 mm and less than or equal to 1 mm. Optionally, the thickness of the second elastic material layer g12 can be 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm or 1 mm. In this way, the thickness of the second elastic material layer g12 is moderate, which can reduce the vibration of the battery cover 321 while preventing the battery cover 321 from being delaminated from the frame 3222.

[0120] It can be understood that the area of the first elastic material layer g11 and the area of the second elastic material layer g12 also affect the distribution uniformity of the top pressure of the first buffer g1 on the battery cover 321. The greater the area of the first elastic material layer g11 and the area of the second elastic material layer g12, the more uniform the distribution of the top pressure. However, under the premise that the thickness of the first elastic material layer g11 and the thickness of the second elastic material layer g12 are constant, the greater the area of the first elastic material layer g11 and the area of the second elastic material layer g12, the greater the resultant force of the top pressure of the first buffer g1 on the battery cover 321, which is likely to cause the battery cover 321 to be delaminated from the frame 3222.

[0121] Based on this, in some embodiments, referring to FIG. 11b, which is a schematic diagram of a detailed structure of the second device F1 in the assembly structure shown in FIG. 11a, the first elastic material layer g11 can include a first elastic material portion g111 and a second elastic material portion g112. The first elastic material portion g111 is a portion of the first elastic material layer g11 located between the second device F1 and the battery cover, and the second elastic material portion g112 is a portion of the first elastic material layer g11 located between the second area S12 and the battery cover.

[0122] The area of the first elastic material portion g111 in the orthographic projection of the first surface S1 is a first area, and the area of the second elastic material portion g112 in the orthographic projection of the first surface S1 is a second area. The sum of the first area and the second area is 30% or more and 60% or less of the area of the first area S11, and the first area is 80% or more of the sum of the first area and the second area.

[0123] In this way, the area of the first elastic material layer g11 is moderate, which can improve the uniformity of the top pressure of the battery cover 321 by the first elastic material layer g11 to a certain extent, while controlling the resultant force of the top pressure of the battery cover 321 by the first elastic material layer g11 within a reasonable range, preventing the battery cover 321 from being delaminated from the middle frame 3222.

[0124] In yet other embodiments, continuing to refer to FIG. 11b, the second elastic material layer g12 can include a third elastic material portion g121 and a fourth elastic material portion g122. The third elastic material portion g121 is a portion of the second elastic material layer g12 located between the second device F1 and the battery cover, and the fourth elastic material portion g122 is a portion of the second elastic material layer g12 located between the second area S12 and the battery cover.

[0125] The area of the third elastic material portion g121 in the orthographic projection of the first surface S1 is a third area, and the area of the fourth elastic material portion g122 in the orthographic projection of the first surface S1 is a fourth area. The sum of the third area and the fourth area is 20% or more and 50% or less of the area of the second area S12. The third area is 40% or more and 60% or less of the sum of the third area and the fourth area.

[0126] In this way, the area of the second elastic material layer g12 is moderate, which can improve the uniformity of the top pressure of the battery cover 321 by the second elastic material layer g12 to a certain extent, while controlling the resultant force of the top pressure of the battery cover 321 by the second elastic material layer g12 within a reasonable range, preventing the battery cover 321 from being delaminated from the middle frame 3222.

[0127] In order to prevent the first elastic material layer g11 and the second elastic material layer g12 from being dislocated when the whole device falls or is subjected to external force, the positions of the first elastic material layer g11 and the second elastic material layer g12 in the electronic device 10 can be fixed.

[0128] In some embodiments, referring back to FIG. 10b, the electronic device 10 can further include a first adhesive layer k1 and a second adhesive layer k2. The first adhesive layer k1 and the second adhesive layer k2 can be back adhesive or dispensing adhesive. The first adhesive layer k1 is arranged between the first elastic material layer g11 and the battery cover 321, and the first elastic material layer g11 is bonded to the battery cover 321 by the first adhesive layer k1. The second adhesive layer k2 is arranged between the second elastic material layer g12 and the battery cover 321, and the second elastic material layer g12 is bonded to the battery cover 321 by the second adhesive layer k2. In this way, the first elastic material layer g11 and the second elastic material layer g12 are fixedly bonded to the battery cover 321, and the stability is better.

[0129] In some embodiments, referring back to FIG. 10b, the electronic device 10 can further include a flexible heat sink 6. The material of the flexible heat sink 6 includes but is not limited to graphite and graphene. Part of the flexible heat sink 6 is arranged between the second device F1 and the first buffer g1, and another part of the flexible heat sink 6 is arranged between the second region S12 of the first device 4 and the first buffer g1. The flexible heat sink 6 can play a role in dissipating heat for the first device 4 and the second device F1, and the flexible heat sink 6 has flexibility and can be deformed under the extrusion of the first elastic material layer g11 and the second elastic material layer g12, so as to ensure the uniformity of the distribution of the pressing force of the first elastic material layer g11 and the second elastic material layer g12 on the battery cover 321.

[0130] In some embodiments, the thickness of the flexible heat sink 6 at each position can remain consistent, which can reduce the difficulty in designing the thickness and area of the first elastic material layer g11 and the second elastic material layer g12.

[0131] Referring back to FIG. 10b, the electronic device 10 further includes a third device 7. The third device 7 is arranged in the second housing 32 and located on the side of the first device 4. In some embodiments, the third device 7 can be a battery protection plate, the battery protection plate is electrically connected with the first device 4, and the battery protection plate is used to realize at least one function of overcharge protection, short circuit protection, current protection, temperature protection, voltage protection, line drop protection, and first device parameter detection of the first device 4. Of course, in other embodiments, the third device 7 can also be a circuit board or other structure, and the present application is exemplarily described by taking the third device 7 as the battery protection plate.

[0132] In some embodiments, a second buffer portion g2 is arranged between the third device 7 and the battery cover 321, and the thickness of the second buffer portion g2 can also be compressed to allow the battery cover 321 to be bent and deformed towards the third device 7 under the action of an external force. The second buffer portion g2 can include a gap or a soft elastic material such as foam. Part of the second buffer portion g2 between the third device 7 and the battery cover 321 also communicates with part of the rear cavity between the diaphragm 522 and the back cover 512 via at least one through hole in the back cover 512. The part of the second buffer portion g2 between the third device 7 and the battery cover 321 refers to the part of the second buffer portion g2 whose orthographic projection of the battery cover 321 coincides with the orthographic projection of the third device 7 on the battery cover 321. The space on the side of the diaphragm 522 facing away from the front cavity Q1 communicates with the part of the second buffer portion g2, that is, the part of the second buffer portion g2 is located in the rear cavity Q2.

[0133] In this way, the part of the second buffer portion g2 between the third device 7 and the battery cover 321 can increase the volume of the rear cavity of the speaker module 5 to some extent, and the low-frequency performance of the speaker module 5 can be further improved.

[0134] In some embodiments, referring to FIG. 10b, the second buffer portion g2 can include a third elastic material layer g21. The material of the third elastic material layer g21 is a soft elastic material, which can be foam, silica gel, sponge, etc. The third elastic material layer g21 can fill part of the gap between the third device 7 and the battery cover 321, and can control the volume of the rear cavity Q2 within a certain range to improve the low-frequency performance of the speaker module 5.

[0135] In some embodiments, the third elastic material layer g21 and the second elastic material layer g12 can be integrally formed. In this way, the number of components of the electronic device 10 can be reduced, and the assembly difficulty can be reduced.

[0136] In some embodiments, referring to FIG. 10b, the electronic device 10 can further include a fourth device F2. The fourth device F2 can be an electrical connection structure, and the fourth device F2 is used to connect at least two electronic components. In some embodiments, a third electronic component N3 is further arranged in the second housing 32. The third electronic component N3 is located on the side of the first device 4 facing away from the second electronic component N2, and the third electronic component N3 can be a flash module. The third electronic component N3 can also be a camera module, a vibration motor, etc. The third electronic component N3 is exemplarily described as a flash module. The fourth device F2 is connected between the third electronic component N3 and the second electronic component N2.

[0137] The fourth device F2 can be an FPC board, a PCB, or a structure formed by weaving wires and flexible materials. In this embodiment, the fourth device F2 is taken as an FPC for example. Of course, in other embodiments, the fourth device F2 can also be a graphite sheet or other structure, and the fourth device F2 is taken as an electrically connecting structure for example.

[0138] At least part of the fourth device F2 is arranged between the third elastic material layer g21 and the third device 7, that is, the fourth device F2 can be partially arranged between the third elastic material layer g21 and the third device 7, or can be entirely arranged between the third elastic material layer g21 and the third device 7. In this embodiment, the fourth device F2 is taken as an example of being partially arranged between the third elastic material layer g21 and the third device 7.

[0139] It can be understood that the surface of the third device 7 facing the battery cover 321 is a second surface S2, and there is a certain height difference between the second surface S2 and the first surface S1 in the Z-axis direction. The distance from the second surface S2 to the battery cover 321 is greater than the distance from the first surface S1 to the battery cover 321, which causes a bending part between the part of the fourth device F2 bearing on the first surface S1 and the part of the fourth device F2 bearing on the second surface S2 under the premise that the fourth device F2 is not suspended. In the process of bending the fourth device F2 to form the bending part, the fourth device F2 is easily damaged.

[0140] To solve the above problems, please continue to refer to FIG. 10b, and refer to FIG. 12 and FIG. 13. FIG. 12 is an assembly structure diagram of the first device 4, the first buffer g1, the second buffer g2, the second device F1, and the fourth device F2 in the electronic device 10 shown in FIG. 10b. FIG. 13 is an exploded structure diagram of the assembly structure shown in FIG. 12. The second buffer g2 can further include a fourth elastic material layer g22. The material of the fourth elastic material layer g22 can be a soft elastic material, which can be, for example, foam, silica gel, sponge, and the like. At least part of the fourth elastic material layer g22 is arranged between the fourth device F2 and the third device 7, that is, the fourth elastic material layer g22 can be partially arranged between the fourth device F2 and the third device 7, or can be entirely arranged between the fourth device F2 and the third device 7. In this embodiment, the fourth elastic material layer g22 is taken as an example of being partially arranged between the fourth device F2 and the third device 7.

[0141] In this way, the fourth elastic material layer g22 can raise the height of the part of the fourth device F2 opposite to the third device 7, reduce the bending amount of the connecting part of the fourth device F2 between the first surface S1 and the second surface S2, and reduce the risk of damage to the fourth device F2.

[0142] In some embodiments, referring to FIGS. 12 and 13, the third layer of elastic material g21 can include a fifth layer of elastic material g211 and a sixth layer of elastic material g212 arranged along a first direction Y1. The fifth layer of elastic material g211 is disposed between the battery cover 321 and the fourth device F2, and the sixth layer of elastic material g212 is disposed on the third device 7. The normal projection of the sixth layer of elastic material g212 on the third device 7 is outside the normal projection of the fourth device F2 on the third device 7. Optionally, the first direction Y1 is parallel to the Y-axis direction.

[0143] Correspondingly, the fourth layer of elastic material g22 can include a seventh layer of elastic material g221 and an eighth layer of elastic material g222 arranged along the first direction Y1. The seventh layer of elastic material g221 is disposed between the fourth device F2 and the third device 7, and the eighth layer of elastic material g222 is disposed between the sixth layer of elastic material g212 and the third device 7.

[0144] In this way, the third layer of elastic material g21 and the fourth layer of elastic material g22 can fill the large gap between the third device 7 and the battery cover 321, and can further control the volume of the rear cavity of the speaker module and improve the low-frequency performance of the speaker module.

[0145] In some embodiments, referring to FIGS. 12 and 13, along the first direction Y1, the fifth layer of elastic material g211 and the sixth layer of elastic material g212 can be spaced apart. In this way, the gap between the fifth layer of elastic material g211 and the sixth layer of elastic material g212 can avoid the fourth device F2. Of course, in other embodiments, the fifth layer of elastic material g211 and the sixth layer of elastic material g212 can be integrally formed, which is not limited in the present application.

[0146] In some embodiments, referring to FIGS. 12 and 13, the fifth layer of elastic material g211 and the sixth layer of elastic material g212 can be integrally formed. In this way, the electronic device 10 includes fewer components and has a smaller assembly difficulty. Of course, in other embodiments, the fifth layer of elastic material g211 and the sixth layer of elastic material g212 can be spaced apart along the first direction Y1.

[0147] In some embodiments, referring back to FIG. 10b, the electronic device 10 further includes a third adhesive layer k3. The third adhesive layer k3 can be a dispensing adhesive or a back adhesive. The third adhesive layer k3 is disposed between the third layer of elastic material g21 and the battery cover 321, and the third layer of elastic material g21 is bonded to the battery cover 321 by the third adhesive layer k3. In this way, the third layer of elastic material g21 can be prevented from being misaligned.

[0148] In some embodiments, the third adhesive layer k3 and the second adhesive layer k2 can be integrally formed to simplify the structural composition of the electronic device 10 and improve the assembly efficiency of the electronic device 10. Of course, in other embodiments, the third adhesive layer k3 and the second adhesive layer k2 can also be independently provided, and the present application does not make specific limitations in this regard.

[0149] In some embodiments, referring to FIG. 10b and FIG. 13, the electronic device 10 further includes a fourth adhesive layer k4. The fourth adhesive layer k4 can be dispensing adhesive or back adhesive. The fourth adhesive layer k4 is arranged between the fourth device F2 and the fourth elastic material layer g22. In this way, the fourth elastic material layer g22 can be prevented from being misaligned.

[0150] In some embodiments, referring to FIG. 10b, the electronic device 10 further includes a first support 8. The first support 8 is arranged in the accommodating space of the second housing 32 and is fixedly connected with the second housing 32. Optionally, the first support 8 can be fixed on the middle frame 322. A through hole (not shown in the figure) is arranged between the first support 8 and the middle frame 322, and part of the second device F1 is arranged in the through hole. A fifth adhesive layer k5 including dispensing adhesive or back adhesive is arranged between the first support 8 and the battery cover 321. The battery cover 321 is bonded to the first support 8 by means of the fifth adhesive layer k5 to further prevent the battery cover 321 from vibrating.

[0151] In some embodiments, referring to FIG. 10b, the electronic device 10 further includes an elastic limiting structure g3. The material of the elastic limiting structure g3 includes but is not limited to foam, sponge, rubber or silicone. The present application is exemplarily described by taking the elastic limiting structure g3 as foam. The elastic limiting structure g3 is located between the first support 8 and the first buffer g1, and the elastic limiting structure g3 is arranged between the second device F1 and the battery cover 321 to limit the position of the second device F1.

[0152] In some embodiments, referring to FIG. 10b, the electronic device 10 further includes a sixth adhesive layer k6. The sixth adhesive layer k6 is arranged between the elastic limiting structure g3 and the battery cover 321 to bond the elastic limiting structure g3 to the battery cover 321 to prevent the elastic limiting structure g3 from being misaligned.

[0153] In some embodiments, referring to FIG. 10b, the electronic device 10 further includes a third buffer g4 arranged between the second electronic component N2 and the battery cover 321. The material of the third buffer g4 is soft elastic material. For example, the material of the third buffer g4 can be foam, sponge or rubber. The third buffer g4 is used to apply a top pressure to the battery cover 321 to further prevent the battery cover 321 from vibrating.

[0154] In some embodiments, please refer to Fig. 10b, the electronic device 10 further comprises a seventh adhesive layer k7. The seventh adhesive layer k7 is arranged between the third buffer portion g4 and the battery cover 321, and is used to bond the third buffer portion g4 to the battery cover 321, so as to prevent the third buffer portion g4 from being misaligned.

[0155] In some embodiments, please refer to Fig. 10b, the electronic device 10 further comprises a second bracket 9. The second bracket 9 is arranged between the second electronic component N2 and the battery cover 321, and is fixed to the middle frame 322, so as to stop and limit the second electronic component N2. Based on this, the third buffer portion g4 can be arranged between the second bracket 9 and the battery cover 321.

[0156] In some embodiments, the first bracket 8 is located between the first component 4 and the rotating shaft mechanism 33, and the second electronic component N2 is located on the side of the first component 4 which is opposite to the first bracket 8, that is, the second electronic component N2 and the first bracket 8 are respectively located on the opposite sides of the first component 4. In this way, by arranging the fifth adhesive layer k5 on the first bracket 8, arranging the first buffer portion g1 between the first component 4 and the battery cover, and arranging the third buffer portion g4 between the second electronic component N2 and the battery cover 321, the uniformity of supporting the battery cover 321 can be improved, and the vibration of the battery cover 321 can be effectively prevented.

[0157] In the description of the present specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0158] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, comprising: The shell is provided with a sound hole; The speaker module is arranged in the shell, and the speaker module comprises a shell part and a core arranged in the shell part, the shell part comprises a front shell and a rear cover, the core comprises a diaphragm, the diaphragm and the front shell form a front cavity, the front cavity is communicated with the sound hole, and the rear cover is located on a side of the diaphragm away from the front cavity and is provided with at least one through hole. The shell comprises a battery cover; 2. The electronic device of claim 1, wherein, The electronic device further comprises: A first device is arranged in the shell; A first buffer part is arranged between the first device and the battery cover, and a part of the first buffer part between the first device and the battery cover is communicated with a part of a rear cavity space between the diaphragm and the rear cover through the at least one through hole. Further comprising:

3. The electronic device of claim 2, wherein, A second device is arranged at least partially between the first device and the first buffer part, a surface of the first device facing the battery cover is a first surface, a projection area of the first device on the first surface is a first area, an area of the first area is smaller than an area of the first surface, and an area of the first surface outside the first area is a second area; The first buffer part comprises a first elastic material layer and a second elastic material layer, at least a part of the first elastic material layer is arranged between the second device and the battery cover, at least a part of the second elastic material layer is arranged between the second area and the battery cover, and a thickness of the second elastic material layer in a free state is greater than a thickness of the first elastic material layer in a free state. The second elastic material layer is arranged along a circumferential direction of the first elastic material layer.

4. The electronic device of claim 3, wherein, The first elastic material layer is provided with at least one hollow hole.

5. The electronic device of claim 3 or 4, wherein, The first elastic material layer comprises a first elastic material part and a second elastic material part; 6. The electronic device of any of claims 3-5, wherein, The first elastic material part is a part of the first elastic material layer between the second device and the battery cover, and the second elastic material part is a part of the first elastic material layer between the second area and the battery cover; A projection area of the first elastic material part on the first surface is a first area, and a projection area of the second elastic material part on the first surface is a second area; The sum of the first area and the second area is 30% or more and 60% or less of the area of the first area; and the first area is 80% or more of the sum of the first area and the second area. The second elastic material layer comprises a third elastic material part and a fourth elastic material part; 7. The electronic device of any of claims 3-6, wherein, The third elastic material part is a part of the second elastic material layer between the second device and the battery cover, and the fourth elastic material part is a part of the second elastic material layer between the second area and the battery cover; A projection area of the third elastic material part on the first surface is a third area, and a projection area of the fourth elastic material part on the first surface is a fourth area; ​ ​ The sum of the third area and the fourth area is 20% or more and 50% or less of the area of the second region, and the third area is 40% or more and 60% or less of the sum of the third area and the fourth area.

8. The electronic device of any of claims 3-7, wherein, The ratio of the thickness of the second elastic material layer to the thickness of the first elastic material layer is greater than or equal to 1 and less than or equal to 3.

9. The electronic device of any of claims 3-8, wherein, The material of the first elastic material layer and the second elastic material layer includes foam.

10. The electronic device of any of claims 3-9, wherein, Further comprising: The first glue layer is arranged between the first elastic material layer and the battery cover. The second glue layer is arranged between the second elastic material layer and the battery cover.

11. The electronic device of any of claims 3-10, wherein, Further comprising: The flexible heat sink is arranged between the second device and the first buffer portion, and another part of the flexible heat sink is arranged between the second region of the first device and the first buffer portion.

12. The electronic device of any of claims 2-11, wherein, The first device includes a battery.

13. The electronic device of any of claims 3-11, wherein, Further comprising: The third device is arranged in the shell and located on the side of the first device. The second buffer portion is arranged between the third device and the battery cover, and part of the second buffer portion between the third device and the battery cover also communicates with part of the rear cavity space between the diaphragm and the rear cover through the at least one through hole.

14. The electronic device of claim 13, wherein, The second buffer portion includes a third elastic material layer.

15. The electronic device of claim 14, wherein, The third elastic material layer is integrally formed with the second elastic material layer.

16. The electronic device of claim 14 or 15, wherein, Further comprising: The fourth device is arranged at least partially between the third elastic material layer and the third device. The second buffer portion further includes a fourth elastic material layer, and at least part of the fourth elastic material layer is arranged between the fourth device and the third device.

17. The electronic device of claim 16, wherein, The third elastic material layer includes a fifth elastic material portion and a sixth elastic material portion arranged along a first direction; the fifth elastic material portion is arranged between the battery cover and the fourth device, and the sixth elastic material portion is located outside the fourth device in the orthographic projection of the third device. The fourth elastic material layer includes a seventh elastic material portion and an eighth elastic material portion arranged along the first direction; the seventh elastic material portion is arranged between the fourth device and the third device, and the eighth elastic material portion is arranged between the sixth elastic material portion and the third device. The first direction is the length direction of the edge of the first device facing the third device.

18. The electronic device of any of claims 14-17, wherein, Further comprising: The third glue layer is arranged between the third elastic material layer and the battery cover.

19. The electronic device of claim 16 or 17, wherein, Further comprising: The fourth glue layer is arranged between the fourth elastic material layer and the fourth device.

20. The electronic device of any of claims 13-19, wherein, The third device includes a battery protection plate.

21. The electronic device of any of claims 3-11, 13-20, wherein, Further comprising: The first support is arranged in the shell and fixedly connected with the shell, a through hole is arranged between the first support and the shell, part of the second device passes through the through hole, and a fifth glue layer is arranged between the first support and the battery cover.

22. The electronic device of claim 21, wherein, Further comprising: A second electronic component is arranged on the opposite side of the first component from the first support, and a third buffer is arranged between the second electronic component and the battery cover.

23. The electronic device of claim 22, wherein, The shell comprises a first shell, a second shell, and a rotating shaft mechanism connected between the first shell and the second shell. The battery cover is part of the second shell, and the first component, at least part of the second component, the speaker module, the first support, and the second electronic component are all arranged in the second shell.

24. The electronic device of claim 23, wherein, When the electronic device is in the unfolded state, the electronic device is in the shape of a rectangular plate, and the first shell, the rotating shaft mechanism, and the second shell are arranged along the length direction of the electronic device.

25. The electronic device of any of claims 1-24, wherein, The rear cover is provided with a mesh structure, and the mesh holes on the mesh structure form the through holes.

26. The electronic device of claim 25, wherein, The acoustic impedance of the mesh structure is less than or equal to 800 rayls, the effective area of the mesh structure is greater than or equal to 3 mm 2 .

27. The electronic device of any of claims 1-26, wherein, The electronic device further comprises an earpiece.

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