Waveguide tube, speaker assembly, and electronic device

Abstract

The present application relates to a waveguide tube, a speaker assembly and an electronic device. The waveguide tube comprises a protrusion, and a sound inlet, a sound guide channel and a sound outlet which are in communication in sequence, wherein the sound inlet is configured to transmit sound waves into the sound guide channel; the sound outlet is configured to transmit sound waves out of the sound guide channel; and the protrusion is fixed on an inner wall of the sound guide channel, and extends in the direction from the sound inlet to the sound outlet. The speaker assembly in the embodiments of the present application has similar sound wave radiation angles at low and high frequencies, which is beneficial for improving the usage experience of users.

Description

Waveguides, speaker assemblies and electronic devices

[0001] This application claims priority to Chinese Patent Application No. 202422079815.5, filed with the China National Intellectual Property Administration on August 26, 2024, entitled "Waveguide, Speaker Assembly and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of audio technology, and more particularly to a waveguide, speaker assembly, and electronic device. Background Technology

[0003] The sound waves radiated by a loudspeaker have a certain directionality. At lower frequencies, the directionality is weak and the coverage angle is large; at higher frequencies, the directionality is strong and the coverage angle is small. This means that loudspeakers cannot achieve a similar sound wave radiation angle at low and high frequencies. When a user moves within the area of ​​the sound wave radiation angle, it is difficult to obtain a balanced listening experience at both low and high frequencies, thus limiting the user's listening range. Summary of the Invention

[0004] This application provides a waveguide, a speaker assembly, and an electronic device. Through the structural design of the waveguide, this application enables the speaker assembly to have similar sound wave radiation angles at low and high frequencies, which is beneficial to improving the user experience.

[0005] In a first aspect, embodiments of this application provide a waveguide. The waveguide includes a boss and a sound inlet, a sound guiding channel, and a sound outlet connected in sequence. The sound inlet is used for sound waves to enter the sound guiding channel, and the sound outlet is used for sound waves to exit the sound guiding channel. The boss is fixed to the inner wall of the sound guiding channel and extends along the direction from the sound inlet to the sound outlet. Exemplarily, the sound inlet and the sound outlet can be located on opposite sides of the sound guiding channel. The number of bosses can be one, two, three, four, or five, etc., and embodiments of this application do not limit the number of bosses.

[0006] This embodiment of the application provides a protrusion on the inner wall of the sound guide channel, extending from the sound inlet to the sound outlet. Both the surface of the protrusion and the inner wall of the sound guide channel without the protrusion reflect sound waves, and the different transmission distances of the sound waves help to expand the radiation angle of high-frequency sound waves and reduce their directivity, thus making the radiation angle of high-frequency sound waves closer to that of low-frequency sound waves. Regardless of the frequency of the sound waves, this ensures that users can obtain a balanced listening experience when moving within the area of ​​the sound wave radiation angle, thereby improving the user experience.

[0007] In one possible implementation, the boss has a dimension greater than or equal to 2 mm in a first direction, which is perpendicular to the inner wall of the sound guiding channel. The dimension of the boss in the first direction can be understood as its height. This embodiment of the application, by setting the dimension of the boss in the first direction to be greater than or equal to 2 mm, helps to expand the radiation angle of high-frequency sound waves and reduce their directivity. When the dimension of the boss in the first direction is less than 2 mm, the frequency of the scattered sound waves generated by the boss is outside the range of sound frequencies audible to the human ear.

[0008] In one possible implementation, the boss includes a first segment and a second segment, wherein the first segment is closer to the sound inlet than the second segment, and the dimensions of the first segment in the first direction are different from those of the second segment in the first direction. This embodiment increases the flexibility in setting the dimensions of the boss in the first direction by setting the dimensions of the first segment and the second segment differently in the first direction. This allows for flexible setting of the boss's dimensions in the first direction according to different application requirements, which is beneficial for the use of waveguides in various application scenarios.

[0009] In one possible implementation, the dimension of the first segment in the first direction is greater than the dimension of the second segment in the first direction. This embodiment of the application, by setting the dimension of the first segment closer to the sound inlet in the first direction to be greater than the dimension of the second segment farther from the sound inlet in the first direction, facilitates sound wave scattering, primarily scattering low-frequency sound waves. Furthermore, by setting the dimension of the first segment closer to the sound inlet in the first direction to be greater than the dimension of the second segment farther from the sound inlet in the first direction, it can prevent users' fingers or other objects from being inserted into the sound inlet and damaging the speaker when the speaker assembly is exposed. In other embodiments, the dimension of the first segment in the first direction may also be smaller than the dimension of the second segment in the first direction, or the dimension of the first segment in the first direction may be equal to the dimension of the second segment in the first direction; that is, the dimensions of the bosses in the first direction are the same from the sound inlet to the sound outlet. This embodiment of the application does not limit this.

[0010] In one possible implementation, the number of protrusions is at least two, the at least two protrusions are spaced apart along a second direction, the at least two protrusions have the same size in the first direction, the second direction is angled to the first direction and also angled to the direction from the sound inlet to the sound outlet. This embodiment of the application, by setting at least two protrusions with the same size in the first direction, has a simple structure, good regularity in the arrangement of multiple protrusions, and is relatively neat, thus meeting visual requirements.

[0011] In one possible implementation, the number of protrusions is at least two, and the at least two protrusions are spaced apart along a second direction. The at least two protrusions have different dimensions in the first direction. The second direction is angled to the first direction and also angled to the direction from the sound inlet to the sound outlet. In this embodiment, by setting at least two protrusions with different dimensions in the first direction, a wider frequency range of sound waves can be scattered, increasing irregularity, randomness, and disorder. Multiple protrusions can be designed with different dimensions in the first direction according to different application requirements, offering high flexibility and a wide range of applications suitable for various scenarios.

[0012] In one possible implementation, the sound guiding channel includes a central region and edge regions located on opposite sides of the central region. The protrusion is provided in both the central region and the edge regions. The protrusion in the central region has a larger dimension in the first direction than the protrusion in the edge regions. By setting the protrusion in the central region to have a larger dimension in the first direction than the protrusion in the edge regions, this embodiment of the application can effectively scatter sound waves in the central region, thereby increasing the radiation angle of high-frequency sound waves and making it closer to the radiation angle of low-frequency sound waves, thus improving the user's listening experience. In other embodiments, the dimension of the protrusion in the central region in the first direction may also be smaller than or equal to the dimension of the protrusion in the edge regions in the first direction.

[0013] In one possible implementation, the sound guiding channel includes a first region and a second region, both of which are provided with the protrusions. The protrusions in the first region and the second region are symmetrically arranged. Symmetrical arrangement of the protrusions in the first region and the second region can be understood as the protrusions in the first region and the second region having the same number, shape, and size; the protrusions at symmetrical positions in the first region and the second region are completely identical. This embodiment of the application, by setting the protrusions in the first region and the second region symmetrically, can obtain symmetrical sound effects in the listening area, improving the user experience and avoiding large differences and strong disorder in the listening effect when the user moves in the listening area, which would negatively impact the user experience.

[0014] In other embodiments, the protrusions in the first region and the protrusions in the second region may also be asymmetrically arranged. This application does not limit this, and can be set as needed.

[0015] In one possible implementation, the boss includes a bottom surface and a top surface disposed opposite to each other. The bottom surface is fixed to the inner wall of the sound guiding channel, and a gap is provided between the top surface and the inner wall of the sound guiding channel. The inner wall of the sound guiding channel includes not only the area fixed to the bottom surface, but also other areas, such as areas opposite to the area fixed to the bottom surface. The areas of the top surface opposite to the areas fixed to the bottom surface are spaced apart so that the top surface can reflect sound waves, which is beneficial to increasing the radiation angle of high-frequency sound waves.

[0016] In one possible implementation, one end of the boss is located at the sound inlet, and the other end of the boss is located at the sound outlet. In this embodiment, by positioning one end of the boss at the sound inlet and the other end at the sound outlet, it is beneficial to fully utilize the space of the sound guiding channel and to ensure sufficient scattering of sound waves.

[0017] In one possible implementation, the extension length of the boss from the sound inlet to the sound outlet is greater than or equal to 20 mm and less than or equal to 500 mm. By setting the extension length of the boss to be greater than or equal to 20 mm and less than or equal to 500 mm, this embodiment of the application facilitates sufficient scattering of sound waves and expands the radiation angle of high-frequency sound waves.

[0018] In one possible implementation, the boss is elongated. The elongated shape of the boss is regular and can have a smooth surface, which is beneficial for sound wave transmission and avoids other irregularly shaped bosses from obstructing sound wave transmission. The boss can also be semi-cylindrical or other shapes; the specific shape of the boss is not limited in this application embodiment.

[0019] In one possible implementation, the number of protrusions is at least two, and the at least two protrusions are spaced apart along a second direction. The spacing between adjacent protrusions is the same in the direction from the sound inlet to the sound outlet. The second direction forms an angle with both the first direction and the direction from the sound inlet to the sound outlet. This embodiment of the application, by setting the spacing between adjacent protrusions to be the same in the direction from the sound inlet to the sound outlet, has a simple structure, good regularity in the arrangement of multiple protrusions, and is relatively neat, thus meeting visual requirements.

[0020] In one possible implementation, the number of protrusions is at least two, and the at least two protrusions are spaced apart along a second direction. The spacing between adjacent protrusions is different along the direction from the sound inlet to the sound outlet. The second direction forms an angle with both the first direction and the direction from the sound inlet to the sound outlet. This embodiment of the application increases irregularity, randomness, and disorder by setting different spacing between adjacent protrusions along the direction from the sound inlet to the sound outlet. The spacing between adjacent protrusions along the direction from the sound inlet to the sound outlet can be designed according to different application requirements, offering high flexibility and a wide range of applications, suitable for various application scenarios.

[0021] In one possible implementation, the distance between two adjacent protrusions at the sound inlet is smaller than the distance at the sound outlet. Understandably, the sound wave energy generated by the speaker is more concentrated at the sound inlet. This embodiment of the application, by setting the distance between two adjacent protrusions at the sound inlet to be smaller than the distance at the sound outlet, facilitates a wider range of sound wave scattering. In other embodiments, the distance between two adjacent protrusions at the sound inlet may also be greater than or equal to the distance at the sound outlet.

[0022] In one possible implementation, the number of protrusions is at least three, and these three protrusions are spaced apart along a second direction. A groove is formed between two adjacent protrusions. The different grooves have the same size in the second direction. The second direction is angled to the first direction and also angled to the direction from the sound inlet to the sound outlet. The size of the groove in the second direction can be understood as the width of the groove. This embodiment of the application, by setting different grooves to have the same size in the second direction, has a simple structure, and the multiple protrusions and different grooves are arranged regularly and neatly, meeting visual requirements.

[0023] In one possible implementation, the number of protrusions is at least three, and the at least three protrusions are spaced apart along a second direction. A groove is formed between two adjacent protrusions. The different grooves have different dimensions in the second direction. The second direction is angled to the first direction and also angled to the direction from the sound inlet to the sound outlet. This embodiment of the application increases non-uniformity, irregularity, randomness, and disorder by setting different grooves with different dimensions in the second direction. This can improve the frequency range of scattering, meaning it can scatter sound waves over a wider frequency range. Different groove dimensions in the second direction can be designed according to different application requirements, offering high flexibility and a wide range of applications, making it suitable for various application scenarios.

[0024] In one possible implementation, the sound guiding channel includes a central region and edge regions located on opposite sides of the central region. The groove in the central region is a first groove, and the grooves in the edge regions are second grooves. The dimension of the first groove in the second direction is smaller than the dimension of the second groove in the second direction. Understandably, the sound wave energy generated by the speaker is relatively concentrated at the sound inlet. By setting the dimension of the first groove in the second direction to be smaller than the dimension of the second groove in the second direction, it is beneficial to improve the scattering effect of the waveguide on the sound waves. In other embodiments, the dimension of the first groove in the second direction may also be greater than or equal to the dimension of the second groove in the second direction.

[0025] In one possible implementation, the sound guiding channel includes a mounting area, and the protrusions are located in the mounting area. The ratio of the sum of the dimensions of the protrusions in the second direction to the dimension of the mounting area in the second direction is greater than or equal to 20% and less than or equal to 80%. The second direction is angled to the first direction and also angled to the direction from the sound inlet to the sound outlet. This embodiment of the application, by setting the ratio of the sum of the dimensions of the protrusions in the second direction to the dimension of the mounting area in the second direction to be greater than or equal to 20% and less than or equal to 80%, and by reasonably configuring the dimensions of the protrusions in the second direction and the spacing between multiple protrusions, helps to ensure the sound wave scattering effect of the waveguide.

[0026] In one possible implementation, the cross-sectional area of ​​the sound guiding channel at the sound inlet is smaller than the cross-sectional area of ​​the sound guiding channel at the sound outlet. Exemplarily, the cross-sectional area of ​​the sound guiding channel can gradually increase from the sound inlet to the sound outlet, or the cross-sectional area of ​​the sound guiding channel can remain constant for a certain section. The sound guiding channel can be horn-shaped. In this embodiment, setting the cross-sectional area of ​​the sound guiding channel at the sound inlet to be smaller than that at the sound outlet helps to constrain the direction of sound wave transmission. A large difference between the cross-sectional areas at the sound inlet and the sound outlet results in a large sound wave radiation angle and weak sound wave directivity; a small difference between the cross-sectional areas at the sound inlet and the sound outlet results in a small sound wave radiation angle and strong sound wave directivity.

[0027] Secondly, this application provides a loudspeaker assembly, including a loudspeaker and a waveguide as described in any of the foregoing embodiments. The loudspeaker's outlet is connected to the inlet, and the sound waves generated by the loudspeaker can enter the waveguide channel through the inlet and exit the waveguide channel through the outlet. The loudspeaker can be a moving-coil loudspeaker, a capacitor loudspeaker, a piezoelectric loudspeaker, an electromagnetic loudspeaker, or an electro-ion loudspeaker, etc. The embodiments of this application do not limit the type of loudspeaker.

[0028] In one possible implementation, the speaker assembly includes a connector that securely connects the waveguide to the speaker. The connector and the waveguide can be made of the same or different materials; for example, the connector can be plastic and the waveguide can be metal, or both can be metal. This application does not limit this, and the design can be customized as needed.

[0029] In one possible implementation, the connector and the waveguide are integrally formed. Understandably, this integral forming avoids assembly and fixing processes, provides high structural strength, and prevents gaps between the connector and the waveguide that could lead to acoustic leakage. In other embodiments, the connector and the waveguide can also be separate structures that are assembled and fixed.

[0030] Thirdly, this application provides an electronic device, including a housing and a speaker assembly as described in any of the foregoing embodiments, wherein the speaker assembly is located within the housing. The electronic device can be a mobile phone, tablet computer, laptop computer, in-vehicle device, wearable device, headphones, or speaker, etc. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0032] Figure 1 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0033] Figure 2 is a schematic diagram of the radiation angle of low-frequency sound waves and the radiation angle of high-frequency sound waves in the prior art;

[0034] Figure 3 is a directivity diagram of sound waves in the prior art;

[0035] Figure 4 is a schematic diagram of the radiation angle of low-frequency sound waves and the radiation angle of high-frequency sound waves in the embodiments of this application.

[0036] Figure 5 is a directivity diagram of sound waves in an embodiment of this application;

[0037] Figure 6 is a structural schematic diagram of a speaker assembly shown in Figure 1;

[0038] Figure 7 is a structural schematic diagram of the speaker assembly shown in Figure 6 from another angle;

[0039] Figure 8 is a structural schematic diagram of the speaker assembly shown in Figure 6 from another angle;

[0040] Figure 9 is an exploded view of the loudspeaker assembly shown in Figure 7;

[0041] Figure 10 is a structural schematic diagram of the waveguide shown in Figure 9 from another angle;

[0042] Figure 11 is a cross-sectional view of the speaker assembly shown in Figure 7 along point AA;

[0043] Figure 12 is a cross-sectional view of the speaker assembly shown in Figure 7 along BB;

[0044] Figure 13 is a schematic diagram of a waveguide provided in an embodiment of this application;

[0045] Figure 14 is a schematic diagram of a waveguide provided in an embodiment of this application;

[0046] Figure 15 is a schematic diagram of a waveguide provided in an embodiment of this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] It should be understood that the terms "first," "second," etc., used in this application are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0049] In the description of this application, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, a mating connection, or an integral connection; those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] Figure 1 shows a schematic diagram of an electronic device 100. The electronic device 100 can be a mobile phone, tablet computer, laptop computer, in-vehicle device, wearable device, headphones, or speaker, etc. In this embodiment, the electronic device 100 is described as a speaker. The speaker can be a soundbar, which can be connected to a television to play television sound and improve the sound quality when the user watches television.

[0052] The electronic device 100 may include a housing 10 and a speaker assembly 20. The speaker assembly 20 is located within the housing 10, and the housing 10 protects the internal speaker assembly 20. The housing 10 may be made of materials such as plastic or metal. The speaker assembly 20 converts electrical signals into sound signals and guides and transmits these sound signals to the user, allowing the user to hear sound.

[0053] The housing 10 may be provided with a power switch 11, a volume down button 12, and a volume up button 13 at intervals. When using the electronic device 100, the user can operate the power switch 11 to turn the speaker assembly 20 on or off as needed. When the user operates the power switch 11 to turn on the speaker assembly 20, the user can adjust the volume down or up by operating the volume down button 12 and the volume up button 13 to obtain the desired volume and meet the user's usage needs.

[0054] The electronic device 100 may include a first mesh cover 30 and a second mesh cover 40. The first mesh cover 30 protects a speaker located below and facing the first mesh cover 30, while the second mesh cover 40 protects a speaker located behind and facing the second mesh cover 40. It is understood that the electronic device 100 may also include speakers other than the speaker assembly 20. The first mesh cover 30 may be made of sound-permeable fabric, and the second mesh cover 40 may be made of iron mesh and have sound-permeable holes.

[0055] The electronic device 100 in Figure 1 is only schematic. The size, shape, position, structure, etc. of the housing 10, speaker assembly 20, power switch 11, volume down button 12 and volume up button 13 can be set as needed. This application does not limit the specific structure of the electronic device 100. The electronic device 100 may also include other structural components.

[0056] As shown in Figures 2 and 3, Figure 2 is a structural schematic diagram of the radiation angles of low-frequency and high-frequency sound waves in the prior art, and Figure 3 is a sound wave directivity diagram in the prior art. The sound waves radiated by the loudspeaker assembly have a certain directivity. At lower frequencies, the directivity of the sound waves is weak, and the coverage angle is large. At higher frequencies, the directivity of the sound waves is strong, and the coverage angle is small. This makes it impossible to achieve similar sound wave radiation angles at low and high frequencies. In the prior art, the radiation angle θ1 of low-frequency sound waves is larger than the radiation angle α1 of high-frequency sound waves, and the difference between the radiation angles θ1 and α1 is significant.

[0057] As shown in Figures 4 and 5, Figure 4 is a structural schematic diagram of the radiation angles of low-frequency and high-frequency sound waves in this embodiment, and Figure 5 is a sound wave directivity diagram in this embodiment. In this embodiment, the radiation angle θ2 of the low-frequency sound wave of the speaker assembly 20 is greater than the radiation angle α2 of the high-frequency sound wave, but the difference between the radiation angles θ2 and α2 is small. Compared with the prior art, the radiation angle α2 of the high-frequency sound wave in this embodiment can be increased to reduce the difference between the radiation angles θ2 and α2 of the low-frequency sound wave, so that the speaker assembly 20 has similar sound wave radiation angles at low and high frequencies. The speaker assembly 20 in this embodiment can achieve a balanced listening effect at low and high frequencies, improving the user experience.

[0058] As shown in Figures 6, 7, 8 and 9, Figure 6 is a structural schematic diagram of a loudspeaker assembly 20 shown in Figure 1, Figure 7 is a structural schematic diagram of the loudspeaker assembly 20 shown in Figure 6 from another angle, Figure 8 is a structural schematic diagram of the loudspeaker assembly 20 shown in Figure 6 from another angle, and Figure 9 is an exploded structural schematic diagram of the loudspeaker assembly 20 shown in Figure 7.

[0059] The loudspeaker assembly 20 may include a loudspeaker 21 and a waveguide 22. The loudspeaker 21 may include a sound outlet 211. The sound outlet 211 of the loudspeaker 21 is connected to the sound inlet 222 of the waveguide 22, and the sound waves generated by the loudspeaker 21 can enter the waveguide 22 and be transmitted to the space outside the waveguide 22.

[0060] In some embodiments, the loudspeaker 21 may include a diaphragm 212, which vibrates to produce sound, and a sound outlet 211 is located at the location of the diaphragm 212. Understandably, the shape of the sound inlet 222 of the waveguide 22 can match the shape of the diaphragm 212 when vibrating. A gap is provided between the diaphragm 212 and the sound inlet 222 to prevent the sound inlet 222 from restricting the vibration of the diaphragm 212, and sound waves generated by the vibration of the edge region of the diaphragm 212 can enter the sound inlet 222 through the gap between the diaphragm 212 and the sound inlet 222. The loudspeaker 21 can be a moving-coil loudspeaker, a condenser loudspeaker, a piezoelectric loudspeaker, an electromagnetic loudspeaker, or an ionizer loudspeaker, etc. This application embodiment does not limit the type of loudspeaker 21.

[0061] In some embodiments, the speaker assembly 20 may include a connector 23 for fixing the speaker 21 and the waveguide 22. Exemplarily, the connector 23 may include a first mounting portion 231 and a second mounting portion 232 fixedly connected, with the first mounting portion 231 and the second mounting portion 232 communicating with each other. The internal cavity of the first mounting portion 231 matches the speaker 21, and the internal cavity of the second mounting portion 232 matches the waveguide 22. The speaker 21 may be fixed within the first mounting portion 231, and the waveguide 22 may be fixed within the second mounting portion 232. Understandably, the speaker 21 is fixed to the side where the sound inlet 222 of the waveguide 22 is located. A sealing gasket may be provided between the speaker 21 and the first mounting portion 231, so that the sound waves from the speaker 21 are confined within the waveguide 22 and transmitted within the waveguide 22, and transmitted to the external space through the sound outlet 223 of the waveguide 22, preventing sound wave leakage.

[0062] Understandably, the first mounting part 231 and the second mounting part 232 can be an integrally formed structure, avoiding the assembly and fixing process and achieving high structural strength. In other embodiments, the first mounting part 231 and the second mounting part 232 can also be separate structures that are assembled and fixed.

[0063] In some embodiments, when the speaker 21 is mounted on the connector 23, the speaker 21 can be tilted upwards (see Figure 12 below). It is understood that when the speaker assembly 20 is used, if the user's listening position is higher than the speaker assembly 20, the speaker 21 can be tilted upwards for better listening effect. In other application scenarios, the speaker 21 can also be tilted downwards or not tilted at all.

[0064] Understandably, the connector 23 and the waveguide 22 can be integrally molded, avoiding the assembly and fixing process, resulting in high structural strength. Furthermore, it avoids gaps between the connector 23 and the waveguide 22 that could lead to acoustic leakage. In other embodiments, the connector 23 and the waveguide 22 can also be separate structures that are assembled and fixed.

[0065] In some embodiments, the connector 23 may include a positioning portion 233 and a mounting portion 234. When the speaker assembly 20 is mounted on the electronic device 100, the positioning portion 233 is used to position the speaker assembly 20 against the structural components on the electronic device 100, enabling precise and rapid installation of the speaker assembly 20. The positioning portion 233 may be a protrusion, a groove, or a through hole; this embodiment does not limit the specific type of positioning portion. The mounting portion 234 may have a mounting hole 235. When the speaker assembly 20 is mounted on the electronic device 100, screws or bolts may be installed in the mounting hole 235 to secure the speaker assembly 20 to the structural components of the electronic device 100.

[0066] In some embodiments, the materials of the connector 23 and the waveguide 22 can be the same or different. For example, the connector 23 can be plastic and the waveguide 22 can be metal, or both the connector 23 and the waveguide 22 can be metal. This application embodiment does not limit this and can be set as needed.

[0067] It is understood that the connector 23 in the embodiments of this application is only schematic representation. This application does not limit the specific structure, shape, size, etc. of the connector 23, and it can be set as needed.

[0068] The speaker assembly 20 may include a seal 24. The seal 24 may be a gasket or the like. When the speaker assembly 20 is mounted on the electronic device 100, the seal 24 may be located between the connector 23 and a structural component on the electronic device 100, or between the waveguide 22 and a structural component on the electronic device 100. In this embodiment, the seal 24 seals the speaker assembly 20 with the structural components within the electronic device 100, preventing the sound waves from the speaker 21 from affecting the performance of other structural components within the electronic device 100.

[0069] Referring to Figures 8 and 9, the waveguide 22 may include a sound guiding channel 221, a sound inlet 222, a sound outlet 223, and a boss 224. The sound inlet 222, the sound guiding channel 221, and the sound outlet 223 are sequentially connected to form a space for sound wave transmission. For example, the sound inlet 222 and the sound outlet 223 may be located on opposite sides of the sound guiding channel 221. The boss 224 is fixed to a portion of the inner wall 2211 of the sound guiding channel 221, and extends from the sound inlet 222 to the sound outlet 223. The number of bosses 224 may be one, two, three, four, or five, etc. When there are multiple bosses 224, they are spaced apart on the inner wall of the sound guiding channel 221. Grooves are formed between adjacent bosses 224.

[0070] As shown in Figures 10 and 11, Figure 10 is a structural schematic diagram of the waveguide 22 shown in Figure 9 from another angle, and Figure 11 is a cross-sectional view of the speaker assembly 20 shown in Figure 7 along line AA. In some embodiments, the cross-sectional area of ​​the sound guide channel 221 at the inlet 222 is smaller than the cross-sectional area of ​​the sound guide channel 221 at the outlet 223. Exemplarily, the cross-sectional area of ​​the sound guide channel 221 can gradually increase from the inlet 222 to the outlet 223, or the cross-sectional area of ​​the sound guide channel 221 can remain constant for a certain section. The sound guide channel 221 can be horn-shaped. Exemplarily, the opening angle of the waveguide 22 is γ, which can be greater than or equal to 40° and less than or equal to 140°, for example, γ can be 60°, 80°, 100°, or 120°. The opening angle γ of the waveguide 22 affects the radiation angle of the low-frequency sound waves. In this embodiment, setting the cross-sectional area of ​​the sound guide channel 221 at the sound inlet 222 to be smaller than that at the sound outlet 223 helps to constrain the direction of sound wave transmission. When the difference between the cross-sectional areas of the sound guide channel 221 at the sound inlet 222 and at the sound outlet 223 is large, the opening angle γ of the waveguide 22 is large, the sound wave radiation angle is large, and the sound wave directivity is weak. When the difference between the cross-sectional areas of the sound guide channel 221 at the sound inlet 222 and at the sound outlet 223 is small, the opening angle γ of the waveguide 22 is small, the sound wave radiation angle is small, and the sound wave directivity is strong.

[0071] As shown in Figure 10, the waveguide 22 may include a first tube 227 and a second tube 228 connected together. The sound inlet 222 is located at the end of the first tube 227 away from the second tube 228, and the sound outlet 223 is located at the end of the second tube 228 away from the first tube 227. The sound guiding channel 221 passes through both the first tube 227 and the second tube 228. The cross-sectional dimension of the first tube 227 may be smaller than the cross-sectional dimension of the second tube 228.

[0072] In other embodiments, the cross-sectional area of ​​the sound guide channel 221 from the sound inlet 222 to the sound outlet 223 may remain unchanged. The specific structure of the sound guide channel 221 is not limited in the embodiments of this application.

[0073] In some embodiments, the inner wall of the sound guide channel 221 can be a smooth inner wall, which is beneficial to the transmission of sound waves and avoids the obstruction of sound wave transmission when the inner wall of the sound guide channel 221 is not smooth.

[0074] In some embodiments, the cross-section of the waveguide 22 can be rectangular, circular, or racetrack-shaped, etc., and this application embodiment does not limit this. Figure 8 shows an example where the cross-section of the waveguide 22 is rectangular. The waveguide 22 with a rectangular cross-section can include four inner walls. The boss 224 can be disposed on one inner wall of the waveguide 22, on two adjacent inner walls of the waveguide 22, on two opposite inner walls of the waveguide 22, or on three or four inner walls of the waveguide 22. Understandably, when the bosses 224 are provided on two opposite inner walls of the waveguide 22, the bosses 224 on the opposite inner walls can be correspondingly disposed or staggered. This application embodiment does not limit the number, size, or position of the bosses 224 on each inner wall.

[0075] In some embodiments, the boss 224 is elongated. The elongated boss 224 has a regular shape and can have a smooth surface, which is beneficial for sound wave transmission and avoids other irregularly shaped bosses from obstructing sound wave transmission. The boss 224 can also be semi-cylindrical or other shapes; the specific shape of the boss 224 is not limited in this embodiment.

[0076] Referring to Figure 8, in some embodiments, the boss 224 may include a bottom surface 2241 and a top surface 2242 disposed opposite to each other. The bottom surface 2241 is fixed to the inner wall 2211 of the sound guiding channel 221, and a gap is provided between the top surface 2242 and the inner wall of the sound guiding channel 221. The inner wall of the sound guiding channel 221 includes not only the area where the bottom surface 2241 is fixed, but also other areas, such as the area opposite to the area where the bottom surface 2241 is fixed. The areas of the top surface 2242 opposite to the area where the bottom surface 2241 is fixed are spaced apart so that the top surface 2242 can reflect sound waves, which is beneficial to increasing the radiation angle of high-frequency sound waves. The top surface 2242 can be a plane or a curved surface.

[0077] Understandably, the boss 224 may also include a side surface 2243, which connects the bottom surface 2241 and the top surface 2242. The side surface 2243 can also reflect sound waves, which helps to increase the radiation angle of high-frequency sound waves.

[0078] Referring to Figures 8, 9, and 11, the diaphragm 212 of the speaker 21 can be correspondingly positioned with the inlet 222. Sound waves generated by the speaker 21 can enter the sound guide channel 221 through the inlet 222 and exit the sound guide channel 221 through the outlet 223. The inner wall 2211 of another part of the sound guide channel 221 and the surface (e.g., the top surface 2242) of the protrusion 224 can both reflect sound waves. The inner wall of the other part of the sound guide channel 221 can be understood as the inner wall of the sound guide channel 221 without the protrusion. The transmission path length of the sound waves reflected from the inner wall of the other part of the sound guide channel 221 is greater than the transmission path length of the sound waves reflected from the surface of the protrusion 224.

[0079] This embodiment of the application, by providing a protrusion 224 on the inner wall of the sound guide channel 221, with the protrusion 224 extending from the sound inlet 222 to the sound outlet 223, helps to expand the radiation angle of high-frequency sound waves and reduce the directivity of high-frequency sound waves, so that the radiation angle of high-frequency sound waves is close to that of low-frequency sound waves. Regardless of the frequency of the sound waves, users can obtain a balanced listening effect when moving within the area of ​​the sound wave radiation angle, improving the user experience. Understandably, the top surface 2242 and the bottom surface 2241 of the protrusion 224 have a certain distance, that is, the top surface 2242 of the protrusion 224 and the inner wall 2211 of the sound guide channel 221 have a certain distance. For sound waves of the same frequency, the length of the transmission path of the sound wave incident on the top surface 2242 of the boss 224 is different from the length of the transmission path of the sound wave incident on the inner wall 2211 of the sound guide channel 221 (here, the inner wall 2211 refers to the area on the inner wall 2211 that is not covered by the bottom surface 2241). (For example, the length of the transmission path of the sound wave incident on the inner wall 2211 of the sound guide channel 221 is greater than the length of the transmission path of the sound wave incident on the top surface 2242 of the boss 224, and the difference in transmission distance is twice the height of the boss 224). Due to the difference in transmission distance, a phase difference occurs, and the reflected waves of different phases will interfere with each other. At low frequencies, the difference in transmission distance between different reflected waves is small compared to the wavelength of the sound wave, resulting in small phase differences and low interference. As the frequency increases, the difference in transmission distance between different reflected waves becomes significant compared to the wavelength of the sound wave (the transmission distance difference approaches 1 / 4 of the sound wave wavelength), and the phase differences begin to become more pronounced, increasing interference. Previously ordered reflected waves become disordered, causing scattering. When the frequency continues to increase, the dimensions of the protrusion 224 (e.g., the height and width of the protrusion 224, as described later) become comparable to the wavelength of the sound wave, resulting in diffuse reflection. Both scattering and diffuse reflection expand the radiation angle of the sound wave. Specifically, for high-frequency sound waves, the protrusion 224 on the inner wall 2211 of the waveguide 22 along the direction of sound wave transmission expands the radiation angle and weakens the directivity of high-frequency sound waves, making the radiation angle of low-frequency sound waves closer to that of high-frequency sound waves.

[0080] As shown in Figures 8 and 12, Figure 12 is a cross-sectional view of the speaker assembly 20 shown in Figure 7 along BB. The dimension of the boss 224 in the first direction A1 (the dimension of the boss 224 in the first direction A1 can be L1 and / or L2) is greater than or equal to 2 mm, and the first direction A1 is the direction perpendicular to the inner wall 2211 of the sound guide channel 221. The dimension of the boss 224 in the first direction A1 can be understood as the height of the boss 224. For example, the dimension of the boss 224 in the first direction A1 can be 5 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, or 100 mm, etc. By setting the dimension of the boss 224 in the first direction A1 to be greater than or equal to 2 mm, this embodiment of the application is beneficial to expanding the radiation angle of high-frequency sound waves and reducing the directivity of high-frequency sound waves. When the size of the boss 224 in the first direction A1 is less than 2mm, the frequency of the scattered sound waves generated by the boss 224 is not within the range of sound frequencies that can be heard by the human ear.

[0081] It is understandable that for a boss of height L, the frequency of high-frequency sound wave diffusion that can be generated is 340 / (L x 4)~340 / L.

[0082] In some embodiments, the boss 224 has different dimensions in the first direction A1, from the sound inlet 222 to the sound outlet 223. For example, the boss 224 may include a first segment 2244 and a second segment 2245, where the first segment 2244 is closer to the sound inlet 222 than the second segment 2245. The dimensions L1 of the first segment 2244 in the first direction A1 are different from the dimensions L2 of the second segment 2245 in the first direction A1. For example, the dimension L1 of the first segment 2244 in the first direction A1 is greater than the dimension L2 of the second segment 2245 in the first direction A1.

[0083] Understandably, when the inner wall 2211 of the sound guide channel 221 is curved, the first direction A1 is different at different positions. In Figure 12, the dimension L1 of the first segment 2244 in the first direction A1 is based on the first direction A1 represented by the solid line in Figure 12, and the dimension L2 of the second segment 2245 in the first direction A1 is based on the first direction A1 represented by the dashed line in Figure 12. The first direction A1 can also be any other direction perpendicular to the inner wall 2211 of the sound guide channel 221. In other embodiments, when the inner wall 2211 of the sound guide channel 221 is planar, the first direction A1 can be a fixed and unchanging direction.

[0084] This embodiment of the application increases the flexibility of setting the size of the boss 224 in the first direction A1 by setting the size L1 of the first segment 2244 in the first direction A1 to be different from the size L2 of the second segment 2245 in the first direction A1. This allows for flexible setting of the size of the boss 224 in the first direction A1 according to different application requirements, which is beneficial for the use of the waveguide 22 in different application scenarios. This embodiment of the application also improves sound wave scattering by setting the size L1 of the first segment 2244 near the sound inlet 222 in the first direction A1 to be larger than the size L2 of the second segment 2245 away from the sound inlet 222, which is beneficial for scattering sound waves, especially low-frequency sound waves. Furthermore, by setting the size L1 of the first segment 2244 near the sound inlet 222 in the first direction A1 to be larger than the size L2 of the second segment 2245 away from the sound inlet 222 in the first direction A1, it is possible to prevent user fingers or other objects from being inserted into the sound inlet 222 and damaging the speaker 21 when the speaker assembly 20 is exposed.

[0085] Understandably, the first segment 2244 has a dimension L1 greater than or equal to 2 mm in the first direction A1, and the second segment 2245 has a dimension L2 greater than or equal to 2 mm in the first direction A1.

[0086] In other embodiments, the dimension L1 of the first segment 2244 in the first direction A1 may be smaller than the dimension L2 of the second segment 2245 in the first direction A1, or the dimension L1 of the first segment 2244 in the first direction A1 may be equal to the dimension L2 of the second segment 2245 in the first direction A1. That is, the dimensions of the boss 224 in the first direction A1 are the same in the direction from the sound inlet 222 to the sound outlet 223. This application embodiment does not limit this.

[0087] Understandably, the dimension L1 of the first segment 2244 in the first direction A1 can vary, and the dimension L2 of the second segment 2245 in the first direction A1 can vary. Taking Figure 12 as an example, from the sound inlet 222 to the sound outlet 223, the dimension L1 of the first segment 2244 in the first direction A1 can gradually decrease, and the dimension L2 of the second segment 2245 in the first direction A1 can gradually decrease; that is, the dimension of the boss 224 in the first direction A1 gradually decreases from the sound inlet 222 to the sound outlet 223. In other embodiments, the dimension L1 of the first segment 2244 in the first direction A1 can also remain unchanged, and the dimension L2 of the second segment 2245 in the first direction A1 can also remain unchanged.

[0088] In some embodiments, one end of the boss 224 is located at the sound inlet 222, and the other end of the boss 224 is located at the sound outlet 223. In this embodiment of the application, by setting one end of the boss 224 at the sound inlet 222 and the other end of the boss 224 at the sound outlet 223, it is beneficial to make full use of the space of the sound guiding channel 221 and to fully scatter the sound waves.

[0089] In other embodiments, the two ends of the boss 224 may be located in the area between the sound inlet 222 and the sound outlet 223, and the ends of the boss 224 may not extend to the sound inlet 222 or the sound outlet 223. This application embodiment does not limit this.

[0090] Referring to Figures 8 and 12, in some embodiments, the extension length of the boss 224 in the direction from the sound inlet 222 to the sound outlet 223 is greater than or equal to 20 mm and less than or equal to 500 mm. The extension length of the boss 224 from the sound inlet 222 to the sound outlet 223 refers to the dimension of the extension path between the end of the boss 224 near the sound inlet 222 and the end of the boss 224 near the sound outlet 223 in the direction from the sound inlet 222 to the sound outlet 223. Exemplarily, the extension length of the boss 224 can be 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 120 mm, 140 mm, 160 mm, 180 mm, 200 mm, 230 mm, 260 mm, 300 mm, 350 mm, 400 mm, or 450 mm, etc. In this embodiment of the application, by setting the extension length of the boss 224 to be greater than or equal to 20mm and less than or equal to 500mm, it is beneficial to fully scatter the sound waves and to expand the radiation angle of the high-frequency sound waves.

[0091] Understandably, the extension length of the boss 224 from the sound inlet 222 to the sound outlet 223 is mainly determined by the size of the waveguide 22 (here, the size of the waveguide 22 refers to the extension length of the waveguide 22, which refers to the size of the extension path of the waveguide 22 from the sound inlet 222 to the sound outlet 223). The larger the size of the waveguide 22, the lower the operating frequency that can constrain the sound wave width. Roughly, the wavelength of the starting frequency that can constrain the sound wave width is twice the extension length of the waveguide 22.

[0092] Understandably, the number of protrusions 224 can be one, two, three, four, or five, etc., and the number of protrusions 224 is not limited in this embodiment. When there are two or more protrusions 224, the multiple protrusions 224 can be arranged at intervals along the second direction A2, which is set at an angle to the first direction A1 and at an angle to the direction from the sound inlet 222 to the sound outlet 223.

[0093] In some embodiments, the extension lengths of the plurality of bosses 224 from the sound inlet 222 to the sound outlet 223 may be the same or different. For example, the extension lengths of the plurality of bosses 224 from the sound inlet 222 to the sound outlet 223 may all be 60mm, or some bosses 224 may all have an extension length of 60mm from the sound inlet 222 to the sound outlet 223, while other bosses 224 may all have an extension length of 70mm from the sound inlet 222 to the sound outlet 223. This application embodiment does not limit this.

[0094] In some embodiments, at least two bosses 224 have the same dimensions in the first direction A1. If a boss 224 is a boss of equal height, that is, in the direction from the inlet 222 to the outlet 223, the dimensions of a boss 224 in the first direction A1 remain unchanged, then at least two bosses 224 can have the same dimensions in the first direction A1; if a boss 224 is a boss of unequal height, that is, in the direction from the inlet 222 to the outlet 223, the dimensions of a boss 224 in the first direction A1 change (for example, the dimensions of the first segment 2244 of the boss 224 in the first direction A1 are different from those of the second segment 2245 in the first direction A1). (Different sizes) The fact that at least two bosses 224 have the same size in the first direction A1 can be understood as at least two bosses 224 having the same size in the first direction A1 when they are in the corresponding positions. For example, the size of the first segment 2244 of one boss 224 in the first direction A1 is the same as the size of the first segment 2244 of another boss 224 in the first direction A1, and the size of the second segment 2245 of one boss 224 in the first direction A1 is the same as the size of the second segment 2245 of another boss 224 in the first direction A1.

[0095] The embodiments of this application provide a simple structure by setting at least two bosses 224 with the same size in the first direction A1. The multiple bosses 224 are arranged in a regular and orderly manner, which can meet visual requirements.

[0096] In some embodiments, at least two bosses 224 have different dimensions in the first direction A1. If a boss 224 is a boss of equal height, that is, in the direction from the sound inlet 222 to the sound outlet 223, the dimension of a boss 224 in the first direction A1 remains unchanged, then at least two bosses 224 may have different dimensions in the first direction A1; if a boss 224 is a boss of unequal height, that is, in the direction from the sound inlet 222 to the sound outlet 223, the dimension of a boss 224 in the first direction A1 changes (for example, the dimension of the first segment 2244 of the boss 224 in the first direction A1 is different from the dimension of the second segment 2245 in the first direction A1). The fact that at least two protrusions 224 have different dimensions in the first direction A1 can be understood as at least two protrusions 224 having different dimensions in the first direction A1 at at least some corresponding positions. For example, the first segment 2244 of one protrusion 224 has a different dimension in the first direction A1 than the first segment 2244 of another protrusion 224, and / or the second segment 2245 of one protrusion 224 has a different dimension in the first direction A1 than the second segment 2245 of another protrusion 224.

[0097] In this embodiment, by setting at least two protrusions 224 with different sizes in the first direction A1, a wider range of sound waves can be scattered, increasing irregularity, randomness and disorder. Multiple protrusions 224 with different sizes in the first direction A1 can be designed according to different application requirements, which is highly flexible, has a wide range of applications, and can be applied to a variety of application scenarios.

[0098] As shown in Figure 13, Figure 13 is a schematic diagram of a waveguide 22. The sound guiding channel 221 includes a mounting area 2212, which includes a central region 2213 and edge regions 2214 located on opposite sides of the central region 2213. Both the central region 2213 and the edge regions 2214 are provided with bosses 224. The number of bosses 224 in the central region 2213 can be one, two, three, four, or five, etc., and the number of bosses 224 in the edge regions 2214 can also be one, two, three, four, or five, etc. The number of bosses 224 in the central region 2213 and the number of bosses 224 in the edge regions 2214 can be the same or different.

[0099] In some embodiments, the size of the boss 224 located in the intermediate region 2213 in the first direction A1 is larger than the size of the boss 224 located in the edge region 2214 in the first direction A1. It is understood that the speaker 21 is correspondingly disposed in the intermediate region 2213, where the sound waves are more concentrated. By setting the size of the boss 224 located in the intermediate region 2213 in the first direction A1 to be larger than the size of the boss 224 located in the edge region 2214 in the first direction A1, this embodiment of the application can effectively scatter the sound waves in the intermediate region 2213, which helps to increase the radiation angle of high-frequency sound waves, making the radiation angle of high-frequency sound waves closer to that of low-frequency sound waves, thereby improving the user's listening experience.

[0100] In other embodiments, the size of the boss 224 located in the middle region 2213 in the first direction A1 may be smaller than or equal to the size of the boss 224 located in the edge region 2214 in the first direction A1. This application embodiment does not limit this.

[0101] Referring to Figures 8 and 13, the number of bosses 224 is at least three, with adjacent bosses 224 spaced apart to form grooves (first groove 225 and second groove 226). In some embodiments, the different grooves have the same size in the second direction A2. The size of the groove in the second direction A2 can be understood as the width of the groove. By setting the different grooves to have the same size in the second direction A2, the embodiments of this application have a simple structure, and the arrangement of multiple bosses 224 and different grooves is regular and neat, which can meet visual requirements.

[0102] In other embodiments, the different grooves have different dimensions in the second direction A2. This application embodiment, by setting different grooves with different dimensions in the second direction A2, increases non-uniformity, irregularity, randomness, and disorder, which can improve the frequency range of scattering. That is, it can scatter sound waves over a wider frequency range. The dimensions of the different grooves in the second direction A2 can be designed according to different application requirements, offering high flexibility and a wide range of applications, making it suitable for various application scenarios.

[0103] For example, the groove located in the middle region 2213 is a first groove 225, and the groove located in the edge region 2214 is a second groove 226. The size of the first groove 225 in the second direction A2 is smaller than the size of the second groove 226 in the second direction A2. Understandably, the sound wave energy generated by the speaker 21 is relatively concentrated in the sound inlet 222. By setting the size of the first groove 225 in the second direction A2 to be smaller than the size of the second groove 226 in the second direction A2, it is beneficial to improve the sound wave scattering effect of the waveguide 22. In other embodiments, the size of the first groove 225 in the second direction A2 may also be greater than or equal to the size of the second groove 226 in the second direction A2.

[0104] Understandably, when the dimensions of the boss 224 in the first direction A1 are different, a groove is formed between two adjacent bosses 224 and the depth of the different grooves is different. The depth of the groove refers to the dimension of the groove in the first direction A1. By setting different groove depths, it is beneficial to scatter sound waves in a wider frequency range, increasing irregularity, randomness and disorder.

[0105] Referring to Figure 13, in some embodiments, the bottom walls of different grooves (such as the first groove 225 and the second groove 226) may be coplanar. Referring to Figure 14, Figure 14 is a schematic diagram of the structure of a waveguide 22. In other embodiments, the bottom walls of different grooves (such as the first groove 225 and the second groove 226) may not be coplanar.

[0106] Referring to Figures 8 and 13, in some embodiments, the spacing between two adjacent protrusions 224 is the same in the direction from the sound inlet 222 to the sound outlet 223. This embodiment of the application, by setting the spacing between two adjacent protrusions 224 to be the same in the direction from the sound inlet 222 to the sound outlet 223, has a simple structure, good regularity in the arrangement of multiple protrusions 224, and is relatively neat, thus meeting visual requirements.

[0107] In other embodiments, the spacing between two adjacent protrusions 224 is different in the direction from the sound inlet 222 to the sound outlet 223. This embodiment of the application increases irregularity, randomness, and disorder by setting different spacing between two adjacent protrusions 224 in the direction from the sound inlet 222 to the sound outlet 223. The spacing between two adjacent protrusions 224 in the direction from the sound inlet 222 to the sound outlet 223 can be designed according to different application requirements, offering high flexibility and a wide range of applications suitable for various scenarios.

[0108] For example, the distance between two adjacent protrusions 224 at the sound inlet 222 is smaller than the distance at the sound outlet 223. Understandably, the sound wave energy generated by the speaker 21 is more concentrated at the sound inlet 222. This embodiment of the application, by setting the distance between two adjacent protrusions 224 at the sound inlet 222 to be smaller than the distance at the sound outlet 223, facilitates a wider range of sound wave scattering. Understandably, the groove between two adjacent protrusions 224 can guide the sound waves entering the sound guide channel from the sound inlet, allowing the sound waves to propagate from the sound inlet to the sound outlet within the groove.

[0109] Understandably, a large gap between two adjacent protrusions 224 results in fewer sound wave scatterings, while a small gap increases resistance to sound wave transmission and affects sound transmission. The gap between two adjacent protrusions 224 can be adjusted as needed to meet the user's requirements.

[0110] Referring to Figure 13, in some embodiments, the ratio of the sum of the dimensions of the bosses 224 in the mounting area 2212 in the second direction A2 to the dimension of the mounting area 2212 in the second direction A2 is greater than or equal to 20% and less than or equal to 80%. Exemplarily, the ratio of the sum of the dimensions of the bosses 224 in the mounting area 2212 in the second direction A2 to the dimension of the mounting area 2212 in the second direction A2 can be 30%, 50%, or 70%, etc. The dimension of the boss 224 in the second direction A2 can be understood as the width of the boss 224. Understandably, if the number of bosses 224 in the mounting area 2212 is one, the sum of the dimensions of the bosses 224 in the second direction A2 within the mounting area 2212 is the dimension of this boss 224 in the second direction A2; if the number of bosses 224 in the mounting area 2212 is two or more, the sum of the dimensions of the bosses 224 in the mounting area 2212 in the second direction A2 is the sum of the dimensions of the multiple bosses 224 in the mounting area 2212 in the second direction A2. This embodiment of the application sets the ratio of the sum of the dimensions of the bosses 224 in the mounting area 2212 in the second direction A2 to the dimension of the mounting area 2212 in the second direction A2 to be greater than or equal to 20% and less than or equal to 80%, thus reasonably configuring the dimensions of the bosses 224 in the second direction A2 and the spacing of the multiple bosses 224, which is beneficial to ensuring the sound wave scattering effect of the waveguide 22.

[0111] In some embodiments, the dimension of a boss 224 in the second direction A2 may be greater than or equal to 2 mm and less than or equal to 10 mm. For example, the dimension of a boss 224 in the second direction A2 may be 5 mm or 8 mm, etc. In other embodiments, the dimension of a boss 224 in the second direction A2 may also be greater than 10 mm. For example, the dimension of a boss 224 in the second direction A2 may be 15 mm, 20 mm or 30 mm, etc. The embodiments of this application do not limit this.

[0112] In some embodiments, in the direction from the sound inlet 222 to the sound outlet 223, the dimensions of a boss 224 in the second direction A2 can be the same, resulting in a simple structure and relatively neat multiple bosses 224, which can meet visual requirements. In other embodiments, the dimensions of a boss 224 in the second direction A2 can also be different in the direction from the sound inlet 222 to the sound outlet 223, and can be set as needed. This application does not limit this aspect.

[0113] As shown in Figure 15, Figure 15 is a schematic diagram of a waveguide 22. The sound guiding channel 221 may include a first region 2215 and a second region 2216, both of which are provided with protrusions 224. The number of protrusions 224 in the first region 2215 may be one, two, three, four, or five, etc., and the number of protrusions 224 in the second region 2216 may also be one, two, three, four, or five, etc. The number of protrusions 224 in the first region 2215 and the number of protrusions 224 in the second region 2216 may be the same or different.

[0114] In some embodiments, the bosses 224 in the first region 2215 and the second region 2216 are symmetrically arranged. It is understood that a center line exists between the first region 2215 and the second region 2216. When there is no gap between the first region 2215 and the second region 2216, the boundary line between them is the center line; when there is a gap between them, the center line between them is the center line. The bosses 224 in the first region 2215 and the second region 2216 are symmetrically arranged about the center line. The symmetrical arrangement of the bosses 224 in the first region 2215 and the bosses 224 in the second region 2216 can be understood as the same number, shape, and size of the bosses 224 in the first region 2215 and the bosses 224 in the second region 2216, and the bosses 224 in the symmetrical positions of the first region 2215 and the second region 2216 are completely identical.

[0115] This application embodiment achieves symmetrical sound effects in the listening area by symmetrically setting the bosses 224 in the first region 2215 and the bosses 224 in the second region 2216, thereby improving the user experience and avoiding large differences and strong disorder in the listening effect when the user moves in the listening area, which would affect the user experience.

[0116] In other embodiments, the bosses 224 in the first region 2215 and the bosses 224 in the second region 2216 may also be asymmetrically arranged. This application embodiment does not limit this and can be set as needed.

[0117] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A waveguide (22), characterized in that, It includes a boss (224) and a sound inlet (222), a sound guide channel (221) and a sound outlet (223) connected in sequence. The sound inlet (222) is used for sound waves to enter the sound guide channel (221), and the sound outlet (223) is used for sound waves to exit the sound guide channel (221). The boss (224) is fixed to the inner wall (2211) of the sound guide channel (221), and the boss (224) extends along the direction from the sound inlet (222) to the sound outlet (223).

2. The waveguide (22) as described in claim 1, characterized in that, The boss (224) has a size greater than or equal to 2 mm in the first direction (A1), which is perpendicular to the inner wall (2211) of the sound guide channel (221).

3. The waveguide (22) as described in claim 2, characterized in that, The boss (224) includes a first segment (2244) and a second segment (2245), the first segment (2244) being closer to the sound inlet (222) than the second segment (2245), and the size of the first segment (2244) in the first direction (A1) being different from the size of the second segment (2245) in the first direction (A1).

4. The waveguide (22) as described in claim 3, characterized in that, The size of the first segment (2244) in the first direction (A1) is greater than the size of the second segment (2245) in the first direction (A1).

5. The waveguide (22) as described in any one of claims 2-4, characterized in that, The number of the bosses (224) is at least two, and the at least two bosses (224) are spaced apart along the second direction (A2). The at least two bosses (224) have the same size in the first direction (A1). The second direction (A2) is set at an angle to the first direction (A1) and at an angle to the direction from the sound inlet (222) to the sound outlet (223).

6. The waveguide (22) as described in any one of claims 2-4, characterized in that, The number of the protrusions (224) is at least two, and the at least two protrusions (224) are spaced apart along the second direction (A2). The at least two protrusions (224) have different dimensions in the first direction (A1). The second direction (A2) is set at an angle to the first direction (A1) and at an angle to the direction from the sound inlet (222) to the sound outlet (223).

7. The waveguide (22) as described in claim 6, characterized in that, The sound guiding channel (221) includes a middle region (2213) and edge regions (2214) located on opposite sides of the middle region (2213). The middle region (2213) and the edge regions (2214) are both provided with the boss (224). The size of the boss (224) located in the middle region (2213) in the first direction (A1) is larger than the size of the boss (224) located in the edge region (2214) in the first direction (A1).

8. The waveguide (22) as described in any one of claims 2-4, characterized in that, The sound guide channel (221) includes a first region (2215) and a second region (2216). The first region (2215) and the second region (2216) are both provided with the boss (224). The boss (224) in the first region (2215) and the boss (224) in the second region (2216) are symmetrically arranged.

9. The waveguide (22) as described in any one of claims 2-4, characterized in that, The boss (224) includes a bottom surface (2241) and a top surface (2242) disposed opposite to each other. The bottom surface (2241) is fixed to the inner wall (2211) of the sound guide channel (221), and a gap is provided between the top surface (2242) and the inner wall (2211) of the sound guide channel (221).

10. The waveguide (22) according to any one of claims 2-4, characterized in that, One end of the boss (224) is located at the sound inlet (222), and the other end of the boss (224) is located at the sound outlet (223).

11. The waveguide (22) according to any one of claims 2-4, characterized in that, The extension length of the boss (224) from the sound inlet (222) to the sound outlet (223) is greater than or equal to 20 mm and less than or equal to 500 mm.

12. The waveguide (22) as described in any one of claims 2-4, characterized in that, The boss (224) is elongated.

13. The waveguide (22) as described in any one of claims 2-4, characterized in that, The number of the protrusions (224) is at least two, and the at least two protrusions (224) are spaced apart along the second direction (A2). In the direction from the sound inlet (222) to the sound outlet (223), the distance between two adjacent protrusions (224) is the same. The second direction (A2) is set at an angle to the first direction (A1) and at an angle to the direction from the sound inlet (222) to the sound outlet (223).

14. The waveguide (22) as described in any one of claims 2-4, characterized in that, The number of the protrusions (224) is at least two, and the at least two protrusions (224) are spaced apart along the second direction (A2). The spacing between two adjacent protrusions (224) is different in the direction from the sound inlet (222) to the sound outlet (223). The second direction (A2) is set at an angle to the first direction (A1) and at an angle to the direction from the sound inlet (222) to the sound outlet (223).

15. The waveguide (22) as claimed in claim 14, characterized in that, The distance between two adjacent protrusions (224) at the sound inlet (222) is less than the distance at the sound outlet (223).

16. The waveguide (22) as described in any one of claims 2-4, characterized in that, The number of the bosses (224) is at least three, and the at least three bosses (224) are spaced apart along the second direction (A2). A groove (225, 226) is formed between two adjacent bosses (224). The grooves (225, 226) are the same size in the second direction (A2). The second direction (A2) is set at an angle to the first direction (A1) and at an angle to the direction from the sound inlet (222) to the sound outlet (223).

17. The waveguide (22) as described in any one of claims 2-4, characterized in that, The number of the bosses (224) is at least three, and the at least three bosses (224) are spaced apart along the second direction (A2). A groove (225, 226) is formed between two adjacent bosses (224). The grooves (225, 226) have different dimensions in the second direction (A2). The second direction (A2) is set at an angle to the first direction (A1) and at an angle to the direction from the sound inlet (222) to the sound outlet (223).

18. The waveguide (22) as claimed in claim 17, characterized in that, The sound guiding channel (221) includes a middle region (2213) and edge regions (2214) located on opposite sides of the middle region (2213). The groove located in the middle region (2213) is a first groove (225), and the groove located in the edge region (2214) is a second groove (226). The size of the first groove (225) in the second direction (A2) is smaller than the size of the second groove (226) in the second direction (A2).

19. The waveguide (22) according to any one of claims 2-4, characterized in that, The sound guide channel (221) includes an installation area (2212), and the boss (224) is located in the installation area (2212). The sum of the dimensions of the boss (224) in the second direction (A2) in the installation area (2212) is greater than or equal to 20% and less than or equal to 80% of the dimensions of the installation area (2212) in the second direction (A2). The second direction (A2) is set at an angle to the first direction (A1) and at an angle to the direction from the sound inlet (222) to the sound outlet (223).

20. The waveguide (22) according to any one of claims 2-4, characterized in that, The cross-sectional area of ​​the sound guide channel (221) at the sound inlet (222) is smaller than the cross-sectional area of ​​the sound guide channel (221) at the sound outlet (223).

21. A loudspeaker assembly (20), characterized in that, Includes a loudspeaker (21) and a waveguide (22) as described in any one of claims 1-20, wherein the outlet (211) of the loudspeaker (21) is connected to the inlet (222).

22. The loudspeaker assembly (20) as claimed in claim 21, characterized in that, The loudspeaker assembly (20) includes a connector (23) that is fixedly connected to the waveguide (22) and the loudspeaker (21).

23. The loudspeaker assembly (20) as claimed in claim 22, characterized in that, The connector (23) and the waveguide (22) are integrally formed.

24. An electronic device (100), characterized in that, It includes a housing (10) and a speaker assembly (20) as claimed in any one of claims 21-23, the speaker assembly (20) being located within the housing (10).

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