A sound-generating device

Abstract

The present application relates to the technical field of electroacoustic conversion, and in particular to a sound-emitting device, which has a front and a back, and a sound outlet is provided on the front. The sound-emitting device includes a sound-emitting component and an outer cover shell, and the outer cover shell is provided outside the sound-emitting component. A cavity is formed between the outer cover shell and the end of the sound-emitting component close to the back. A sound guide channel is provided in the outer cover shell, one end of the sound guide channel is connected to the sound outlet, and the other end is connected to the cavity. The sound-emitting device of the present application provides a smooth propagation channel for the sound facing the back of the sound-emitting device by providing a sound guide channel in the outer cover shell, so that the sound emitted by the sound-emitting component on the back of the sound-emitting device passes through the cavity and the sound guide channel in sequence, and is guided out from the sound outlet on the front of the sound-emitting device, thereby strengthening the sound on the front of the sound-emitting device and greatly improving the loudness of the sound-emitting device.

Description

Technical Field

[0001] The present application relates to the technical field of electroacoustic conversion, and in particular to a sound-generating device. Background Art

[0002] In-vehicle sound systems are a crucial component of car entertainment systems, providing functions such as music playback and voice interaction. Conventional in-vehicle sound systems require larger dimensions for better performance. However, the limited installation space for in-vehicle sound systems, such as in vehicle doors, significantly restricts their size. Therefore, a new in-vehicle sound system is needed that can deliver superior sound quality within this limited space. Summary of the Invention

[0003] This application provides a sound-generating device to solve the problems of insufficient sound loudness and insufficient low-frequency penetration in existing sound-generating devices.

[0004] The present application provides a sound-generating device, the sound-generating device having a front surface and a back surface, the front surface being provided with a sound outlet; the sound-generating device comprising:

[0005] A sound-generating component; the sound-generating component includes a sound-generating module, wherein a first diaphragm is provided at one end of the sound-generating module close to the front side, and a second diaphragm is provided at one end of the sound-generating module close to the back side;

[0006] An outer cover shell is provided outside the sound-generating component; a cavity is formed between the outer cover shell and an end of the sound-generating component close to the back surface;

[0007] A sound guide channel is provided in the outer cover shell, one end of the sound guide channel is communicated with the sound outlet hole, and the other end is communicated with the cavity.

[0008] In a possible design, a sound guide hole is formed at one end of the outer cover shell and the sound-emitting component close to the front, and the sound guide hole is aligned with the sound outlet hole; and the end of the sound guide channel away from the cavity is connected to the sound guide hole.

[0009] In one possible design, the outer housing shell includes:

[0010] a side housing, wherein the sound guide channel is provided in the side housing along the height direction of the side housing;

[0011] A bottom cover is provided on one end of the side shell body close to the back surface; the cavity is formed among the bottom cover, the side shell body and one end of the sound-emitting component close to the back surface.

[0012] In one possible design, the sound guiding channel includes a first sound guiding channel and a second sound guiding channel;

[0013] The side housing includes:

[0014] a first side shell, wherein one end of the first side shell close to the front is open to form the sound outlet, and the sound guide hole is formed between the first side shell and the sound-emitting component; the first sound guide channel is provided in the first side shell, and one end of the first sound guide channel is connected to the sound outlet;

[0015] The second side shell is detachably connected to the first side shell; the cavity is formed between the bottom cover, the second side shell and the end of the sound-emitting component close to the back side; the second sound guide channel is provided in the second side shell, one end of the second sound guide channel is connected to the first sound guide channel, and the other end is connected to the cavity.

[0016] In a possible design, a first mounting platform is provided in the first side shell, and the end of the sound-emitting component close to the front is mounted on the first mounting platform; the first sound guide channel is opened on the first mounting platform.

[0017] In a possible design, a second mounting platform is provided in the second side shell, and the end of the sound-emitting component close to the back is mounted on the second mounting platform; the second sound guide channel is opened on the second mounting platform.

[0018] In one possible design, a plurality of limit platforms are provided on the inner side of the second mounting platform, and the end of the sound-emitting component close to the back side abuts against the limit platform; the plurality of limit platforms are arranged at intervals along the circumference of the second mounting platform; there is a gap between two adjacent limit platforms, and the gap is aligned with the second sound guide channel.

[0019] In a possible design, a mounting plate is provided on the outer periphery of the second side shell; a third mounting hole is opened on the mounting plate.

[0020] In one possible design, the sound-generating component further includes:

[0021] A mounting bracket is connected to the outer cover shell; a sound guide hole of the sound-emitting device is formed at one end of the outer cover shell and the mounting bracket close to the front; and the sound-emitting module is installed in the mounting bracket.

[0022] Beneficial effects of this application:

[0023] The present application discloses a sound-emitting device including a sound-emitting component and an outer cover shell. The sound-emitting component includes a double-sided sound-emitting module. The outer cover shell is provided outside the sound-emitting component to protect the sound-emitting component. At the same time, the shielding effect of the outer cover shell allows the sound-emitting component to be emitted only from the front of the sound-emitting device. A cavity is formed between the outer cover shell and the end of the sound-emitting component close to the back. A sound-guiding channel is provided in the outer cover shell. One end of the sound-guiding channel is connected to the sound outlet hole, and the other end is connected to the cavity. By providing the sound-guiding channel in the outer cover shell, a smooth propagation channel is provided for the sound facing backwards of the sound-emitting device, so that the sound emitted by the sound-emitting component at the back of the sound-emitting device passes through the cavity and the sound-guiding channel in sequence and is output from the sound outlet hole on the front of the sound-emitting device, thereby strengthening the sound from the front of the sound-emitting device and greatly improving the loudness of the sound-emitting device.

[0024] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a sound-generating device provided in this application at one angle;

[0026] Figure 2 A schematic diagram of the three-dimensional structure of a sound-generating device provided in this application at another angle;

[0027] Figure 3 A three-dimensional cross-sectional view of a sound-generating device provided in this application;

[0028] Figure 4 A top view of a sound-generating device provided in this application;

[0029] Figure 5 for Figure 4 Cross-sectional view in the AA direction;

[0030] Figure 6 This is an exploded view of a sound-generating device provided in this application.

[0031] Reference numerals:

[0032] 1-front;

[0033] 10-sound hole;

[0034] 2-back;

[0035] 3- Sounding component;

[0036] 31-mounting frame;

[0037] 32-sound module;

[0038] 321-first diaphragm;

[0039] 322-second diaphragm;

[0040] 4-outer housing;

[0041] 40-sound guide hole;

[0042] 400-cavity;

[0043] 41-guide sound channel;

[0044] 411-first guide sound channel;

[0045] 412-second guide sound channel;

[0046] 42-side housing;

[0047] 423-first side housing;

[0048] 424-second side housing;

[0049] 425-first mounting station;

[0050] 4250-first mounting hole;

[0051] 426-second mounting platform;

[0052] 4260-second mounting hole;

[0053] 427-Limiting table;

[0054] 4270-gap;

[0055] 428-Mounting plate;

[0056] 4280-third mounting hole;

[0057] 43-Bottom cover.

[0058] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0059] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0060] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0061] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0062] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0063] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also be indirectly connected to the other element "on" or "under" through an intermediate element.

[0064] An embodiment of the present application provides a sound-emitting device, which can be applied to but not limited to vehicles such as buses and cars. It can be mainly installed in locations such as car doors and hat racks inside the car. The sound-emitting device emits sound on one side and has the advantages of high loudness and good bass effect.

[0065] According to some specific embodiments of this application, such as Figure 1-6 As shown, the sound-emitting device has a front face 1 and a back face 2, and the front face 1 is provided with a sound outlet 10. The sound-emitting device includes a sound-emitting component 3 and an outer cover shell 4, and the outer cover shell 4 is provided outside the sound-emitting component 3. The sound-emitting component 3 includes a sound-emitting module 32, and a first diaphragm 321 is provided at the end of the sound-emitting module 32 close to the front face 1, and a second diaphragm 322 is provided at the end of the sound-emitting module 32 close to the back face 2. A cavity 400 is formed between the outer cover shell 4 and the end of the sound-emitting component 3 close to the back face 2. A sound guide channel 41 is provided in the outer cover shell 4, and one end of the sound guide channel 41 is connected to the sound outlet 10, and the other end is connected to the cavity 400. Specifically, the outer cover shell 4 can be a BOX shell.

[0066] In this embodiment, the sound-generating device includes a sound-generating assembly 3 and an outer housing 4. The sound-generating assembly 3 is used to generate sound and may be a loudspeaker. The sound-generating assembly 3 includes a sound module 32, which is a double-sided sound-generating membrane assembly. A first diaphragm 321 is disposed at the end of the sound module 32 near the front 1, and a second diaphragm 322 is disposed at the end of the sound module 32 near the rear 2. When the sound module 32 is in operation, the front 1 of the sound-generating device emits sound facing the passenger, while the rear 2 of the sound-generating device emits sound facing away from the passenger. The outer housing 4 is disposed outside the sound-generating assembly 3 to protect the sound-generating assembly 3. Furthermore, the shielding effect of the outer housing 4 can direct the sound from the rear 2 of the sound-generating device toward the front 1 facing the passenger, thereby doubling the sound effect in a limited space. Furthermore, because the diaphragms are disposed on both sides of the sound module 32, the resonances generated by each of them can cancel each other out, reducing vibration to the sheet metal fixings to the door / shelf, significantly contributing to improved noise, vibration, and harshness performance. A cavity 400 is formed between the outer shell 4 and the end of the sound-emitting assembly 3 near the rear face 2. A sound-guiding channel 41 is provided within the outer shell 4. One end of the sound-guiding channel 41 communicates with the sound outlet 10, and the other end communicates with the cavity 400. The provision of the sound-guiding channel 41 within the outer shell 4 provides a smooth path for sound directed backwards from the sound-emitting device. Sound emitted from the sound-emitting assembly 3 at the rear face of the sound-emitting device passes through the cavity 400 and the sound-guiding channel 41, ultimately being directed out of the sound outlet 10 on the front face 1 of the sound-emitting device. This strengthens the sound coming from the front face of the sound-emitting device and significantly improves its loudness.

[0067] Specifically, there may be one or more sound guiding channels 41 . In some specific embodiments, there may be multiple sound guiding channels 41 , and the multiple sound guiding channels 41 are arranged at intervals along the circumference of the outer cover shell 4 .

[0068] According to some specific embodiments of this application, such as Figure 1 As shown, the outer shell 4 and the sound generating assembly 3 are formed with a sound guide hole 40 at one end close to the front 1 , and the sound guide hole 40 is aligned with the sound outlet 10 . The end of the sound guide channel 41 away from the cavity 400 is connected to the sound guide hole 40 .

[0069] In this embodiment, a sound guide hole 40 is formed at one end of the outer cover shell 4 and the sound-emitting component 3 close to the front 1, and the sound guide hole 40 is aligned with the sound outlet 10. The end of the sound guide channel 41 away from the cavity 400 is connected to the sound guide hole 40. The sound guide hole 40 further guides the sound derived from the sound guide channel 41, so that the sound emitted by the sound-emitting component 3 on the back of the sound-emitting device is more accurately and effectively derived from the sound outlet 10. The sound emitted by the sound-emitting component 3 on the back of the sound-emitting device passes through the cavity 400, the sound guide channel 41 and the sound guide hole 40 in sequence, and is finally derived from the sound outlet 10 on the front 1 of the sound-emitting device.

[0070] Specifically, the sound outlet hole 10 can be set according to the number of the sound guide channels 41, and can be one or more.

[0071] According to some specific embodiments of this application, such as Figure 1 As shown, the outer housing 4 includes a side housing 42 and a bottom cover 43. A sound guide channel 41 is provided within the side housing 42 along its height. The bottom cover 43 covers the end of the side housing 42 closest to the rear surface 2. A cavity 400 is formed between the bottom cover 43, the side housing 42, and the end of the sound-emitting assembly 3 closest to the rear surface 2.

[0072] In this embodiment, the outer housing 4 includes a side housing 42 and a bottom cover 43. The side housing 42 encloses the sound-emitting assembly 3 from the side, preventing the sound generated by the sound-emitting assembly 3 from escaping from the side. The bottom cover 43 is located on the end of the side housing 42 near the back 2. The bottom cover 43 encloses the sound-emitting assembly 3 from the back 2 of the sound-emitting device, preventing the sound generated by the sound-emitting assembly 3 from escaping from the back 2 of the sound-emitting device. A cavity 400 is formed between the bottom cover 43, the side housing 42, and the end of the sound-emitting assembly 3 near the back 2. A sound guide channel 41 is provided within the side housing 42. This compact design allows sound emitted from the sound-emitting assembly 3 at the back of the sound-emitting device to first enter the cavity 400 formed between the bottom cover 43, the side housing 42, and the end of the sound-emitting assembly 3 near the back 2, then propagate through the sound guide channel 41 within the side housing 42, and finally be directed out of the sound outlet 10.

[0073] According to some specific embodiments of this application, such as Figure 2 and Figure 5 As shown, the sound guide channel 41 includes a first sound guide channel 411 and a second sound guide channel 412 . The side housing 42 includes a first side housing 423 and a second side housing 424 .

[0074] One end of the first side shell 423, which is close to the front surface 1, is open, forming a sound outlet 10. A sound guide hole 40 is formed between the first side shell 423 and the sound-emitting assembly 3. A first sound guide channel 411 is provided in the first side shell 423, and one end of the first sound guide channel 411 is connected to the sound outlet 10.

[0075] The second side housing 424 is detachably connected to the first side housing 423. A cavity 400 is formed between the bottom cover 43, the second side housing 424, and the end of the sound-emitting assembly 3 closest to the back surface 2. A second sound guide channel 412 is provided within the second side housing 424. One end of the second sound guide channel 412 communicates with the first sound guide channel 411, and the other end communicates with the cavity 400.

[0076] In this embodiment, the side shell 42 includes a first side shell 423 and a second side shell 424 that are detachably connected, which facilitates the disassembly and maintenance of the side shell 42. A first sound guide channel 411 and a second sound guide channel 412 are respectively provided in the first side shell 423 and the second side shell 424, and one end of the first sound guide channel 411 is connected to the sound outlet 10, one end of the second sound guide channel 412 is connected to the first sound guide channel 411, and the other end is connected to the cavity 400. Such a design structure is compact and can enable the sound emitted by the sound-emitting component 3 on the back of the sound-emitting device to first enter the cavity 400 formed between the bottom cover 43, the side shell 42 and the end of the sound-emitting component 3 close to the back 2, and then propagate in the sound guide channel 41 in the side shell 42, and finally be discharged from the sound outlet 10.

[0077] Specifically, the first sound guide channel 411 and the second sound guide channel 412 are respectively arranged in the space formed by the inner side of the first side housing 423 and the outer periphery of the sound-emitting component 3, and the inner side of the second side housing 424 and the outer periphery of the sound-emitting component 3. This space formed by the inner side housing 42 and the outer periphery of the sound-emitting component 3 is fully utilized, so that the sound emitted by the sound-emitting component 3 on the back of the sound-emitting device is directed out of this space, resulting in a compact structure and high space utilization.

[0078] According to some specific embodiments of this application, such as Figure 6 As shown, a first mounting platform 425 is provided in the first side housing 423, and the end of the sound generating assembly 3 close to the front face 1 is mounted on the first mounting platform 425. A first sound guide channel 411 is provided on the first mounting platform 425. A first mounting hole 4250 is provided on the first mounting platform 425.

[0079] In this embodiment, a first mounting platform 425 is provided in the first side shell 423, and the end of the sound-emitting component 3 close to the front face 1 can be mounted on the first mounting platform 425, thereby achieving a fastened connection between the end of the sound-emitting component 3 close to the front face 1 and the first side shell 423. A first sound guide channel 411 is provided on the first mounting platform 425, and the first sound guide channel 411 is arranged by making full use of the structure of the first mounting platform 425 to improve the structural utilization rate of the sound-emitting device. A first mounting hole 4250 is provided on the first mounting platform 425, and the end of the sound-emitting component 3 close to the front face 1 can be fastened to the first mounting platform 425 by passing a bolt assembly through the first mounting hole 4250. Of course, the fastening of the end of the sound-emitting component 3 close to the front face 1 to the first mounting platform 425 is not limited to the bolt connection of this embodiment, and can also be achieved by other methods such as clamping and bonding.

[0080] According to some specific embodiments of this application, such as Figure 6As shown, a second mounting platform 426 is provided in the second side housing 424, and the end of the sound generating assembly 3 close to the back 2 is mounted on the second mounting platform 426. A second sound guide channel 412 is provided on the second mounting platform 426. A second mounting hole 4260 is provided on the second mounting platform 426.

[0081] In this embodiment, a second mounting platform 426 is provided in the second side shell 424, and the end of the sound-emitting component 3 close to the back 2 can be mounted on the second mounting platform 426, so as to achieve a fastened connection between the end of the sound-emitting component 3 close to the back 2 and the second side shell 424. A second sound guide channel 412 is provided on the second mounting platform 426, and the second sound guide channel 412 is arranged by making full use of the structure of the second mounting platform 426, thereby improving the structural utilization rate of the sound-emitting device. A second mounting hole 4260 is provided on the second mounting platform 426, and the fastened installation of the end of the sound-emitting component 3 close to the back 2 on the second mounting platform 426 can be achieved by passing a bolt assembly through the second mounting hole 4260. Of course, the fastened installation of the end of the sound-emitting component 3 close to the back 2 on the second mounting platform 426 is not limited to the bolt connection of this embodiment, and can also be achieved by other methods such as clamping and bonding.

[0082] According to some specific embodiments of this application, such as Figure 6 As shown, a plurality of stoppers 427 are provided on the inner side of the second mounting platform 426. The end of the sound-emitting assembly 3 closest to the back surface 2 abuts against the stopper 427. The stoppers 427 are arranged at intervals along the circumference of the second mounting platform 426. A gap 4270 is formed between adjacent stoppers 427, and the gap 4270 is aligned with the second sound guide channel 412.

[0083] In this embodiment, a plurality of limiting platforms 427 are provided on the inner side of the second mounting platform 426. During installation, the end of the sound-emitting component 3 closest to the back surface 2 abuts the limiting platform 427. The limiting platform 427 prevents the sound-emitting component 3 from shifting along the axis during use, thereby affecting the sound effect of the sound-emitting component 3 on the back surface. The plurality of limiting platforms 427 are arranged at intervals along the circumference of the second mounting platform 426, and a gap 4270 is provided between adjacent limiting platforms 427. The design of the gap 4270 enables the sound emitted by the sound-emitting component 3 on the back surface to enter the cavity 400 and then precisely enter the gap 4270, thereby ensuring the directionality of sound propagation and improving propagation efficiency. At the same time, the gap 4270 is aligned with the second sound guide channel 412, so that the sound exiting the gap 4270 is precisely guided into the second sound guide channel 412, further ensuring the directionality of sound propagation and improving propagation efficiency.

[0084] According to some specific embodiments of this application, such as Figure 1-4 、 Figure 6 As shown, a mounting plate 428 is provided on the outer periphery of the second side housing 424. A third mounting hole 4280 is opened on the mounting plate 428.

[0085] In this embodiment, a mounting plate 428 is provided on the outer periphery of the second side housing 424. This mounting plate 428 allows the second side housing 424 to be mounted on an object such as a vehicle door or a hat rack inside a vehicle, thereby enabling the entire sound-generating device to be mounted on such an object. In this embodiment, a third mounting hole 4280 is also provided on the mounting plate 428. A bolt assembly passing through this third mounting hole 4280 allows the second side housing 424 to be secured to such an object such as a vehicle door or a hat rack inside a vehicle.

[0086] Specifically, the mounting plate 428 is disposed at one end of the second side housing 424 close to the back side 2 of the sound generating device, so as to facilitate installation.

[0087] According to some specific embodiments of this application, such as Figure 1 、 Figure 4 、 Figure 5 and Figure 6 As shown, the sound assembly 3 includes a mounting frame 31, a sound module 32 is mounted in the mounting frame 31, and the mounting frame 31 is connected to the outer shell 4. The outer shell 4 and the mounting frame 31 are formed with a sound guide hole 40 of the sound device at one end close to the front 1.

[0088] In this embodiment, the sound-generating assembly 3 includes a mounting bracket 31 and a sound-generating module 32. The sound-generating module 32 is used to generate sound and is mounted within the mounting bracket 31. The mounting bracket 31 is connected to the outer housing 4, thereby enabling connection between the sound-generating module 32 and the outer housing 4. A sound guide hole 40 for the sound-generating device is formed between the outer housing 4 and the mounting bracket 31 at one end near the front face 1. Specifically, a notch can be provided on the outer periphery of the mounting bracket 31 at the end near the front face 1. When the mounting bracket 31 is installed within the outer housing 4, the outer housing 4 surrounds the notch, forming the sound guide hole 40. This arrangement of the sound guide hole 40 fully utilizes the structural features and improves the structural efficiency.

[0089] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A sound-generating device, characterized in that: The sound-generating device has a front side (1) and a back side (2), and the front side (1) is provided with a sound outlet (10); the sound-generating device comprises: A sound-generating component (3); the sound-generating component (3) comprises a sound-generating module (32), wherein the end of the sound-generating module (32) close to the front surface (1) is provided with a first diaphragm (321), and the end of the sound-generating module (32) close to the back surface (2) is provided with a second diaphragm (322); An outer cover shell (4) is provided outside the sound-generating component (3); a cavity (400) is formed between the outer cover shell (4) and an end of the sound-generating component (3) close to the back surface (2); The outer shell (4) includes a side shell (42), and a sound guide channel (41) is provided in the side shell (42) along the height direction of the side shell (42), and the sound guide channel (41) includes a first sound guide channel (411) and a second sound guide channel (412); The side shell (42) includes a first side shell (423) and a second side shell (424) connected to the first side shell (423); a first mounting platform (425) is provided in the first side shell (423); an end of the sound-generating component (3) close to the front surface (1) is mounted on the first mounting platform (425); a second mounting platform (426) is provided in the second side shell (424); an end of the sound-generating component (3) close to the back surface (2) is mounted on the second mounting platform (426); The first mounting platform (425) is provided with the first sound guide channel (411), and one end of the first sound guide channel (411) is connected to the sound outlet hole (10); The second sound guide channel (412) is provided on the second mounting platform (426), one end of the second sound guide channel (412) is in communication with the first sound guide channel (411), and the other end is in communication with the cavity (400).

2. The sound-generating device according to claim 1, wherein: A sound guide hole (40) is formed on one end of the outer cover shell (4) and the sound-generating component (3) close to the front face (1), and the sound guide hole (40) is aligned with the sound outlet hole (10); and an end of the sound guide channel (41) facing away from the cavity (400) is connected to the sound guide hole (40).

3. The sound-generating device according to claim 2, wherein: The outer cover shell (4) comprises: A bottom cover (43) is provided on one end of the side shell (42) close to the back surface (2); the cavity (400) is formed between the bottom cover (43), the side shell (42) and one end of the sound-generating component (3) close to the back surface (2).

4. The sound-generating device according to claim 3, wherein: One end of the first side shell (423) close to the front surface (1) is open to form the sound outlet (10), and the sound guide hole (40) is formed between the first side shell (423) and the sound-generating component (3); The cavity (400) is formed between the bottom cover (43), the second side shell (424) and an end of the sound-generating component (3) close to the back surface (2).

5. The sound-generating device according to claim 1, wherein: A plurality of limiting platforms (427) are provided on the inner side of the second mounting platform (426), and one end of the sound-generating component (3) close to the back side (2) abuts against the limiting platform (427); the plurality of limiting platforms (427) are arranged at intervals along the circumference of the second mounting platform (426); a gap (4270) is provided between two adjacent limiting platforms (427), and the gap (4270) is aligned with the second sound guide channel (412).

6. The sound-generating device according to claim 4, wherein: A mounting plate (428) is provided on the outer periphery of the second side shell (424); a third mounting hole (4280) is provided on the mounting plate (428).

7. The sound-generating device according to any one of claims 1 to 6, characterized in that: The sound-generating component (3) further comprises: A mounting frame (31) is connected to the outer cover shell (4); a sound guide hole (40) of the sound-generating device is formed at one end of the outer cover shell (4) and the mounting frame (31) close to the front face (1); and the sound-generating module (32) is installed in the mounting frame (31).

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