Sound production structure and electronic equipment

Abstract

The invention discloses a sound production structure and electronic equipment, and belongs to the field of electronic products. The sound production structure comprises a shell, and a first sound production unit and a second sound production unit which are arranged in the shell, the shell comprises a first side wall and a second side wall which are oppositely arranged, the second sound production unit is located between the first sound production unit and the second side wall, and a sound outlet hole is formed in the second side wall; the vibrating diaphragm of the first sound production unit and the top wall of the shell define a front sound cavity of the first sound production unit; the sound production structure further comprises a separation part, and the vibrating diaphragm of the second sound production unit and the separation part define a front sound cavity of the second sound production unit; wherein the front sound cavity of the first sound production unit and the front sound cavity of the second sound production unit are both communicated with the sound outlet hole, the first sound production unit is used for outputting a first audio signal, the second sound production unit is used for outputting a second audio signal, and the frequency of the second audio signal is higher than that of the first audio signal.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic products, and specifically relates to a sound-generating structure and an electronic device. Background Art

[0002] In the related art, in order to improve the appearance of electronic devices such as mobile phones, speakers are usually used in the form of side sound modules, that is, the speakers are installed in a module surrounded by a plastic bracket and a front cavity steel sheet, and the sound waves are radiated to the external space through the sound outlet of the side sound module, and finally received by the human ear. However, due to the existence of the front cavity space surrounded by the plastic bracket, the front cavity steel sheet and one side of the dome of the speaker, the sound waves are prone to resonant filtering in the range of 3kHz to 6kHz, which in turn affects the mid- and high-frequency performance of the speaker. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a sound-generating structure and an electronic device that can solve the problem of poor mid- and high-frequency performance of the speaker module in the related art.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a sound-emitting structure, comprising: a shell, and a first sound-emitting unit and a second sound-emitting unit disposed in the shell, the shell comprising a first side wall and a second side wall disposed opposite to each other, the second sound-emitting unit is located between the first sound-emitting unit and the second side wall, and a sound outlet hole is disposed on the second side wall;

[0006] The diaphragm of the first sound-emitting unit and the top wall of the shell are arranged to form a front sound cavity of the first sound-emitting unit;

[0007] The sound-generating structure further includes a partition, and the diaphragm of the second sound-generating unit and the partition are arranged to form a front sound cavity of the second sound-generating unit;

[0008] Wherein, the front sound cavity of the first sound emitting unit and the front sound cavity of the second sound emitting unit are both connected to the sound outlet hole, and the first sound emitting unit is used to output a first audio signal, and the second sound emitting unit is used to output a second audio signal, and the frequency of the second audio signal is higher than the frequency of the first audio signal.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, including a screen and the sound-emitting structure described in the first aspect.

[0010] In the embodiment of the present application, a partition is provided, and the diaphragm of the second sound unit and the partition are arranged to form a front sound cavity of the second sound unit. Compared with directly forming the front sound cavity of the second sound unit based on the diaphragm of the second sound unit and the top wall of the shell, the volume of the front sound cavity of the second sound unit can be effectively reduced, thereby improving the mid- and high-frequency performance of the second sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is one of the structural schematic diagrams of the sound-generating structure provided in the embodiment of the present application;

[0012] Figure 2 This is the second structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0013] Figure 3 This is the third structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0014] Figure 4 It is a schematic diagram of the structure of the dynamic sound-generating unit provided in an embodiment of the present application;

[0015] Figure 5 It is a schematic diagram of the structure of the piezoelectric ceramic sound-generating unit provided in an embodiment of the present application;

[0016] Figure 6 This is the fourth structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0017] Figure 7 This is the fifth structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0018] Figure 8 This is the sixth structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0019] Fig. 9 This is the seventh structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0020] Fig.10 This is the eighth structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0021] Fig.11 This is the ninth structural diagram of the sound-generating structure provided in the embodiment of the present application;

[0022] Fig.12 It is a schematic diagram of the structure of the electromagnetic sound-generating unit provided in an embodiment of the present application;

[0023] Fig.13 yes Fig.12 Schematic diagram of the structure of the second voice coil shown in . DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] like Figures 1 to 13 As shown, the embodiment of the present application provides a sound structure, including: a housing 10, a first sound unit 20 and a second sound unit 30, the housing 10 includes a first side wall 11 and a second side wall 12 arranged opposite to each other, the second sound unit 30 is located between the first sound unit 20 and the second side wall 12, and a sound outlet 121 is arranged on the second side wall 12;

[0027] The diaphragm of the first sound unit 20 and the top wall 13 of the housing 10 are arranged to form a front sound cavity of the first sound unit;

[0028] The sound-generating structure further includes a partition 40 , and the diaphragm of the second sound-generating unit 30 and the partition 40 are arranged to form a front sound cavity of the second sound-generating unit 30 ;

[0029] Among them, the front sound cavity of the first sound unit 20 and the front sound cavity of the second sound unit 30 are both connected to the sound outlet 121, and the first sound unit 20 is used to output a first audio signal, and the second sound unit 30 is used to output a second audio signal, and the frequency of the second audio signal is higher than the frequency of the first audio signal.

[0030] The above-mentioned first sound-emitting unit 20 can be understood as a sound-emitting unit for outputting low-frequency audio signals, such as a speaker for outputting low-frequency audio signals, etc.; the above-mentioned second sound-emitting unit 30 can be understood as a sound-emitting unit for outputting medium and high-frequency audio signals, such as a speaker for outputting medium and high-frequency audio signals, etc.

[0031] In some embodiments, the frequency range of the first audio signal may be 0-3 KHz, and the frequency range of the second audio signal may be 3 KHz-20 KHz.

[0032] Since the second sound unit 30 is located between the first sound unit 20 and the second side wall 12, that is, the second sound unit 30 is arranged close to the sound outlet 121; therefore, the partition 40 can also be arranged close to the sound outlet 121, so that the diaphragm of the second sound unit 30 and the partition 40 can be arranged to form a front sound cavity of the second sound unit 30. Compared with directly forming the front sound cavity of the second sound unit 30 based on the diaphragm of the second sound unit 30 and the top wall 13 of the shell 10, the volume of the front sound cavity of the second sound unit 30 can be effectively reduced, thereby improving the mid- and high-frequency performance of the second sound unit 30.

[0033] In this embodiment, a partition 40 is provided, and the diaphragm of the second sound unit 30 and the partition 40 are arranged to form a front sound cavity of the second sound unit 30. Compared with directly forming the front sound cavity of the second sound unit 30 based on the diaphragm of the second sound unit 30 and the top wall 13 of the shell 10, the volume of the front sound cavity of the second sound unit 30 can be effectively reduced, thereby improving the mid- and high-frequency performance of the second sound unit 30.

[0034] In some embodiments, Figure 1 As shown, the partition 40 is a partition plate disposed between the diaphragm of the second sound unit 30 and the top wall 13 of the housing 10;

[0035] The partition plate includes a first surface and a second surface which are arranged opposite to each other, the first surface is the end surface of the partition plate facing the top wall 13 of the housing 10, and the second surface is the end surface of the partition plate away from the top wall 13, that is, the second surface of the partition plate is the end surface of the partition plate facing the diaphragm of the second sound unit 30;

[0036] The sound outlet channel of the first sound unit 20 includes a first sound outlet channel formed between the first surface and the top wall 13 of the housing 10, and the front sound cavity of the first sound unit 20 is connected to the sound outlet hole 121 through the first sound outlet channel;

[0037] The diaphragm of the second sound unit 30 and the second surface are arranged to form a front sound cavity of the second sound unit 30 .

[0038] In this embodiment, the partition 40 can be a partition plate arranged between the diaphragm of the second sound unit 30 and the top wall 13 of the shell 10, so that through the setting of the partition plate, the space between the diaphragm of the second sound unit 30 and the top wall 13 of the shell 10 can be separated to reduce the volume of the front sound cavity of the second sound unit 30, thereby achieving the purpose of improving the mid- and high-frequency performance of the second sound unit 30.

[0039] In some embodiments, Figure 2As shown, the distance from the side of the first surface of the partition plate close to the sound hole 121 to the top wall 13 of the shell 10 is greater than the distance from the side of the first surface of the partition plate away from the sound hole 121 to the top wall 13 of the shell 10; through such an arrangement, the influence of the arrangement of the partition plate on the width of the sound channel of the first sound unit 20 can be reduced, and the risk of noise interference of the first sound unit 20 is reduced, thereby optimizing the sound effect of the first sound unit 20.

[0040] In some embodiments, the partition plate also includes a third surface facing the first side wall 11, an end of the first surface close to the sound outlet 121 is connected to the first end of the second surface, an end of the first surface away from the sound outlet 121 is connected to the first end of the third surface, and the second end of the second surface is connected to the second end of the third surface.

[0041] In this embodiment, the partition plate can be set as a plate-like structure with a triangular cross-section to further increase the width of the sound output channel of the first sound unit 20, reduce the risk of noise interference of the first sound unit 20, and improve the sound effect of the first sound unit 20.

[0042] Furthermore, the partition plate further includes a fourth surface facing the second side wall 12, and one end of the first surface close to the sound outlet 121 is connected to the first end of the second surface through the fourth surface. In this way, by setting the partition plate as a plate-like structure with a trapezoidal cross section, the width of the sound outlet channel of the first sound unit 20 can be increased, so as to reduce the risk of noise interference of the first sound unit 20 and improve the sound effect of the first sound unit 20.

[0043] In some embodiments, the distance from the diaphragm of the first sound unit 20 to the top wall 13 of the shell 10 is greater than the distance from the diaphragm of the second sound unit 30 to the top wall 13 of the shell 10. By such a setting, the influence of the setting of the partition plate on the width of the sound output channel of the first sound unit 20 can be avoided.

[0044] In some embodiments, Figure 3 As shown, the second side wall 12 is an inclined side wall, the distance from one end of the second side wall 12 connected to the top wall 13 to the first side wall 11 is a first distance, the distance from one end of the second side wall 12 away from the top wall 13 to the first side wall 11 is a second distance, and the first distance is smaller than the second distance;

[0045] The orthographic projection of the sound outlet 121 on the first plane where the diaphragm of the second sound emitting unit 30 is located at least partially overlaps with the diaphragm of the second sound emitting unit 30;

[0046] The sound-emitting structure further includes a first bracket 50 , which is a basin frame structure shared by the first sound-emitting unit 20 and the second sound-emitting unit 30 .

[0047] The first distance is smaller than the second distance, which can be understood as the second side wall 12 being an inwardly inclined side wall.

[0048] The first bracket 50 is a basin frame structure shared by the first sound unit 20 and the second sound unit 30. It can be understood that the first bracket 50 is a bracket structure shared by the first sound unit 20 and the second sound unit 30, that is, the components in the first sound unit 20 and the second sound unit 30 can be assembled and connected based on the first bracket 50.

[0049] In this embodiment, the second side wall 12 is an inwardly inclined side wall, and the orthographic projection of the sound outlet hole 121 on the first plane where the diaphragm of the second sound unit 30 is located is arranged to at least partially overlap with the diaphragm of the second sound unit 30, so that the top wall of the inwardly retracted shell 10 can effectively separate the front sound cavity of the first sound unit 20 from the second sound unit 30.

[0050] Moreover, by providing the first bracket 50 and configuring the first bracket 50 as a basin frame structure shared by the first sound unit 20 and the second sound unit 30, the space occupied by the first sound unit 20 and the second sound unit 30 can be reduced, further improving the spatial layout effect of the sound structure.

[0051] In some embodiments, a protrusion 51 is formed on one side of the first bracket 50 facing the sound outlet 121, and the protrusion 51 and the top wall 13 of the housing 10 enclose a sound outlet channel of the first sound unit 20;

[0052] The partition 40 is a dustproof net disposed in the sound outlet passage of the first sound-emitting unit 20, and the dustproof net is located at an opening of the sound outlet passage of the first sound-emitting unit 20 close to the sound outlet hole 121;

[0053] The diaphragm of the second sound unit 30 and the dustproof net are enclosed to form a front sound cavity of the second sound unit 30 .

[0054] In this embodiment, by providing a dustproof net at the sound outlet channel of the first sound unit 20 formed by the protrusion 51 of the first bracket 50 and the top wall 13 of the shell 10, not only can the dustproof effect of the first sound unit 20 be improved; the dustproof net can also serve as a partition component between the front sound cavity of the first sound unit 20 and the second sound unit 30, so as to improve the partition effect between the front sound cavity of the first sound unit 20 and the second sound unit 30; moreover, the provision of the dustproof net can also reduce the volume of the front sound cavity of the second sound unit 30, thereby reducing the influence on the smoothness of the sound waves radiated by the first sound unit 20.

[0055] In some embodiments, the dustproof net is arranged at an angle of 30° to 60° with the first plane where the diaphragm of the second sound-emitting unit 30 is located, so as to enhance the separation effect of the dustproof net.

[0056] In some embodiments, the angle between the dustproof net and the first plane where the diaphragm of the second sound unit 30 is located is 45°.

[0057] In some embodiments, the dustproof net may be a metal dustproof net or a plastic dustproof net.

[0058] In some embodiments, the dustproof net may include a plurality of sub-dustproof nets, and the mesh size of each sub-dustproof net may be the same or different.

[0059] For example, when the dustproof net includes a first sub-dustproof net and a second sub-dustproof net, and the mesh sizes of the first sub-dustproof net and the second sub-dustproof net are the same, the mesh sizes of the first sub-dustproof net and the second sub-dustproof net can be staggered with each other to enhance the dustproof separation effect of the dustproof net.

[0060] For another example, when the dustproof net includes a first sub-dustproof net and a second sub-dustproof net, and the mesh size of the first sub-dustproof net is larger than the mesh size of the second sub-dustproof net, the mesh size of each first sub-dustproof net corresponds to the mesh size of multiple second dustproof nets to enhance the dustproof separation effect of the dustproof net.

[0061] For example, the first sound unit 20 and the second sound unit 30 may be disposed on the first bracket 50 by injection molding, riveting, bonding, or the like.

[0062] In some embodiments, a dustproof net may also be provided at the sound outlet 121 to enhance the dustproof effect of the sound-generating structure.

[0063] In some embodiments, the distance from the diaphragm of the first sound unit 20 to the top wall 13 of the shell 10 is greater than the distance from the diaphragm of the second sound unit 30 to the top wall 13 of the shell 10. By such a setting, the influence of the setting of the partition plate on the width of the sound output channel of the first sound unit 20 can be avoided.

[0064] In some embodiments, Figure 7 and Figure 8 As shown, the first sound unit 20 may be a moving coil sound unit, and the second sound unit 30 may be a piezoelectric ceramic sound unit.

[0065] Since the volume of a piezoelectric ceramic sound unit with the same audio effect is smaller than that of a dynamic coil sound unit, when the first sound unit 20 can be a dynamic coil sound unit and the second sound unit 30 is a piezoelectric ceramic sound unit, the low-frequency performance of the first sound unit 20 can be further improved by appropriately increasing the design size of the first sound unit 20.

[0066] In some embodiments, Fig.11As shown, the first sound unit 20 may be a moving coil sound unit, and the second sound unit 30 may be an electromagnetic sound unit.

[0067] Since the volume of an electromagnetic sound unit with the same audio effect is smaller than that of a dynamic sound unit, when the first sound unit 20 can be a dynamic sound unit and the second sound unit 30 is an electromagnetic sound unit, the low-frequency performance of the first sound unit 20 can be further improved by appropriately increasing the design size of the first sound unit 20.

[0068] In some embodiments, Fig. 9 As shown, the first sound unit 20 and the second sound unit 30 can both be piezoelectric ceramic sound units.

[0069] In some embodiments, Fig.10 As shown, the first sound unit 20 and the second sound unit 30 can both be dynamic sound units.

[0070] In some embodiments, the first sound unit 20 may be a piezoelectric ceramic sound unit, and the second sound unit 30 may be an electromagnetic sound unit.

[0071] In some embodiments, the first sound unit 20 may be an electromagnetic sound unit, and the second sound unit 30 may be a piezoelectric ceramic sound unit.

[0072] In some embodiments, the first side wall 11 and the second side wall 12 of the shell 10 may be plastic bracket side walls, the top wall of the shell 10 may be a steel sheet, and the steel sheet may be fixedly disposed on the side walls of the shell 10 to enhance the structural stability of the shell 10 .

[0073] In some embodiments, the housing 10 and the first bracket 50 may be an integral structure.

[0074] In some embodiments, the first bracket 50 may be a plastic bracket, and the first bracket 50 made of plastic material and the shell side wall made of plastic material may be manufactured by integral injection molding.

[0075] In some embodiments, Figure 4 As shown, when the first sound unit 20 is a dynamic sound unit, the first sound unit 20 includes a first dome 21, a first diaphragm 22, a first voice coil 23, a first basin frame 24, a first magnetic conductive sheet 25, a first magnet 26 and a first lower clamping plate 27.

[0076] Among them, the first basin frame 24 can be arranged on the first lower clamping plate 27, the first magnetic conductive sheet 25 and the first magnet 26 can be stacked in sequence on the first lower clamping plate 27 through the first basin frame 24, the first ball top 21 can be connected to the first basin frame 24 through the first diaphragm 22, and the first voice coil 23 is also arranged on the first diaphragm 22; in addition, one end of the first voice coil 23 can also be partially inserted into the groove structure of the first magnetic conductive sheet 25 and the first magnet 26; based on the interaction between the first voice coil 23, the first magnetic conductive sheet 25 and the first magnet 26, the sound function of the dynamic sound unit can be realized.

[0077] The diaphragm of the first sound-emitting unit 20 may be understood as the first dome 21 , or a dome diaphragm structure composed of the first dome 21 and the first diaphragm 22 .

[0078] In some embodiments, Figure 5 As shown, when the second sound unit 30 is a piezoelectric ceramic sound unit, the second sound unit 30 includes a piezoelectric ceramic sheet 31, a connecting rod 32, a second spherical top 33, a second diaphragm 34 and a second basin frame 35, and the second spherical top 33 is connected to the piezoelectric ceramic sheet 31 through the connecting rod 32.

[0079] Among them, the piezoelectric ceramic sheet 31 can be assembled and set on the second basin frame 35, the second ball top 33 can be connected to the second basin frame 35 through the second diaphragm 34, and the cavity enclosed by the second ball top 33 and the piezoelectric ceramic sheet 31 is the sound cavity of the second sound unit 30; the two ends of the above-mentioned connecting rod 32 are respectively connected to the second ball top 33 and the piezoelectric ceramic sheet 31, so as to realize the linkage between the second ball top 33 and the piezoelectric ceramic sheet 31, and then realize the sound function of the piezoelectric ceramic sound unit.

[0080] The piezoelectric ceramic sheet 31 can be deformed by the inverse piezoelectric effect, and when the piezoelectric ceramic sheet 31 is deformed, the second ball top 33 and the second diaphragm 34 can be driven to move together by the connecting rod 32 .

[0081] Furthermore, the resonance frequency f of the second sound unit 30 can be adjusted by adjusting the force compliance of the second diaphragm 34 and the total mass of the second dome 33 and the second diaphragm 34. 0 Falling within the range of 7kHz-10kHz, it can achieve the highest efficiency in radiating mid- and high-frequency sound waves, thereby achieving the purpose of improving the mid- and high-frequency performance of the second sound-emitting unit 30.

[0082] In some embodiments, the second diaphragm 34 can be made of metal materials, such as aluminum alloy diaphragm, titanium alloy diaphragm, so that its force compliance is relatively small; accordingly, the second dome 33 can be made of magnesium aluminum alloy and other materials to ensure that it is light enough and has high strength. 0 The calculation formula is:

[0083]

[0084] In the formula, C ms represents the force compliance of the second diaphragm 34, M ms represents the total mass of the second dome 33 and the second diaphragm 34 .

[0085] Moreover, it can be seen from the above formula that by reducing the force compliance of the second diaphragm 34 and reducing the total mass of the second dome 33 and the second diaphragm 34, the resonance frequency f can be increased. 0 , thereby achieving the purpose of improving the mid- and high-frequency response of the second sound unit 30.

[0086] In some embodiments, Fig.11 and Fig.12 As shown, in the case where the second sound unit 30 is an electromagnetic sound unit, the second sound unit 30 includes a third dome 36, a third diaphragm 37, a second magnet 38, a second voice coil 39, a third basin frame and a second lower clamping plate.

[0087] Among them, the second magnet 38 can be set on the second lower clamping plate through the third basin frame, the third ball top 36 can be connected to the third basin frame through the third diaphragm 37, and the second voice coil 39 can be set on the end surface of the third ball top 36 facing the second magnet 38. Through the interaction between the second voice coil 39 and the second magnet 38, the sound function of the electromagnetic sound unit is realized.

[0088] In some embodiments, the second lower clamping plate of the electromagnetic sound-emitting unit and the first lower clamping plate of the dynamic coil sound-emitting unit may be an integral structure.

[0089] The second magnet 38 can be fixed on the second lower clamping plate of the electromagnetic sound-generating unit by bonding, and the second magnet 38 can be magnetized in the vertical direction, such as the top is the N pole and the bottom is the S pole.

[0090] The second voice coil 39 can be arranged on the side of the third dome 36 facing the second magnet 38 by bonding. Fig.13 As shown, the second voice coil 39 can be spirally disposed on the end surface of the third dome 36 facing the second magnet 38 .

[0091] According to the principle of electromagnet, when alternating current is passed through the second voice coil 39, an alternating magnetic field in the vertical direction will be generated, which will interact with the fixed magnetic field generated by the second magnet 38 and push the third dome 36 and the third diaphragm 37 to vibrate and produce sound.

[0092] An embodiment of the present application also provides an electronic device, including a screen and the above-mentioned sound-generating structure.

[0093] The above-mentioned screen can be understood as a display screen of an electronic device, and the sound-emitting structure can be arranged on the inner side of the screen.

[0094] In some embodiments, the electronic device also includes a frame structure, and the sound hole of the above-mentioned sound-emitting structure can be connected to the sound slit on the frame structure, so that the sound emitted by the sound-emitting structure can be transmitted to the outside through the sound slit on the frame structure, thereby realizing the sound external projection function of the sound-emitting structure.

[0095] It should be noted that the implementation method of the above-mentioned sound-generating structure embodiment is also applicable to the embodiment of the electronic device and can achieve the same technical effect, which will not be described in detail here.

[0096] The electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA).

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0098] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A sound-generating structure, characterized in that: The invention comprises: a shell, and a first sound unit and a second sound unit arranged in the shell, the shell comprises a first side wall and a second side wall arranged opposite to each other, the second sound unit is located between the first sound unit and the second side wall, and a sound outlet hole is arranged on the second side wall; The diaphragm of the first sound-emitting unit and the top wall of the shell are arranged to form a front sound cavity of the first sound-emitting unit; The sound-generating structure further includes a partition, and the diaphragm of the second sound-generating unit and the partition are arranged to form a front sound cavity of the second sound-generating unit; Wherein, the front sound cavity of the first sound emitting unit and the front sound cavity of the second sound emitting unit are both connected to the sound outlet hole, and the first sound emitting unit is used to output a first audio signal, and the second sound emitting unit is used to output a second audio signal, and the frequency of the second audio signal is higher than the frequency of the first audio signal.

2. The sound-generating structure according to claim 1, characterized in that: The partition is a partition plate disposed between the diaphragm of the second sound-emitting unit and the top wall of the housing; The partition plate comprises a first surface and a second surface which are arranged opposite to each other, wherein the first surface is an end surface of the partition plate facing the top wall of the shell; The sound outlet channel of the first sound-emitting unit includes a first sound outlet channel formed between the first surface and the top wall of the shell, and the front sound cavity of the first sound-emitting unit is connected with the sound outlet hole through the first sound outlet channel; The diaphragm of the second sound-emitting unit and the second surface are arranged to form a front sound cavity of the second sound-emitting unit.

3. The sound-generating structure according to claim 2, characterized in that: The distance from one end of the first surface close to the sound outlet hole to the top wall of the shell is greater than the distance from one end of the first surface far from the sound outlet hole to the top wall of the shell.

4. The sound-generating structure according to claim 3, characterized in that: The partition plate also includes a third surface facing the first side wall, an end of the first surface close to the sound outlet is connected to the first end of the second surface, an end of the first surface away from the sound outlet is connected to the first end of the third surface, and the second end of the second surface is connected to the second end of the third surface.

5. The sound-generating structure according to claim 4, characterized in that: The partition plate further includes a fourth surface facing the second side wall, and an end of the first surface close to the sound outlet is connected to the first end of the second surface through the fourth surface.

6. The sound-generating structure according to claim 1, characterized in that: The second side wall is an inclined side wall, the distance from one end of the second side wall connected to the top wall to the first side wall is a first distance, the distance from one end of the second side wall away from the top wall to the first side wall is a second distance, and the first distance is smaller than the second distance; The orthographic projection of the sound outlet on the first plane where the diaphragm of the second sound emitting unit is located at least partially overlaps with the diaphragm of the second sound emitting unit; The sound-emitting structure further includes a first bracket, which is a basin frame structure shared by the first sound-emitting unit and the second sound-emitting unit.

7. The sound-generating structure according to claim 6, characterized in that: A protrusion is formed on one side of the first bracket facing the sound outlet, and the protrusion and the top wall of the shell together form a sound outlet channel of the first sound unit; The partition is a dustproof net arranged in the sound outlet channel of the first sound-emitting unit, and the dustproof net is located at an opening of the sound outlet channel of the first sound-emitting unit close to the sound outlet hole; Wherein, the diaphragm of the second sound-emitting unit and the dust-proof net are enclosed to form a front sound cavity of the second sound-emitting unit.

8. The sound-generating structure according to any one of claims 1 to 7, characterized in that: The second sound generating unit is a piezoelectric ceramic sound generating unit or an electromagnetic sound generating unit.

9. The sound-generating structure according to any one of claims 1 to 7, characterized in that: The distance from the diaphragm of the first sound-emitting unit to the top wall of the shell is greater than the distance from the diaphragm of the second sound-emitting unit to the top wall of the shell.

10. An electronic device, characterized in that: The device comprises a screen and a sound emitting structure as claimed in any one of claims 1 to 9.

Images