Sound production device and electronic equipment

Abstract

The utility model provides a sound production device and electronic equipment. The sound production device comprises a shell, a loudspeaker and a pipeline. The housing has an internal space. The loudspeaker and the pipeline are both installed in the internal space. One end of the pipeline is located in the internal space, and the other end is fixedly connected with the shell. And the pipeline is communicated with the internal space of the shell and the external space of the shell. The pipeline comprises a first pipe body, a second pipe body and a first sheet structure. The first pipe body is fixedly connected with one end of the second pipe body. The first pipe body has a first inner side surface. The first sheet structure is fixedly connected with the first inner side face. The first sheet structure comprises a first surface opposite to the first inner side face. The second pipe body has a second inner side surface. In the height direction of the first sheet structure, the distance between the part, close to the second pipe body, of the first surface and the center axis of the second pipe body is larger than or equal to the distance between the part, close to the first pipe body, of the second inner side face and the center axis of the second pipe body. The sound production device is low in airflow noise and good in sound production effect.

Description

Technical Field

[0001] The present application relates to the field of loudspeakers, and in particular to a sound-generating device and an electronic device. Background Art

[0002] Current sound-generating devices typically have internal pipes connecting the internal space of the sound-generating device with the external space. The pipes can serve as inverted phase tubes to improve the low-frequency performance of the sound-generating device. However, when the sound-generating device operates at high power, the air inside the pipe has a high flow rate and high pressure in the low-frequency band. Due to the drop in air pressure at the pipe opening, the high-pressure air at the pipe mouth will flow rapidly to the outer area with low pressure, forming an outward rotating airflow in the area outside the pipe mouth. This rotating airflow will generate airflow noise at a high flow rate, affecting the sound effect of the sound-generating device. Utility Model Content

[0003] The embodiments of the present application provide a sound-generating device and an electronic device including the sound-generating device, aiming to provide a sound-generating device and an electronic device with low airflow noise and good sound output effect.

[0004] In a first aspect, a sound-emitting device is provided. The sound-emitting device includes a shell, a speaker, and a pipe. The shell has an internal space, and the speaker and the pipe are both installed in the internal space. The speaker is fixedly connected to the shell. The speaker is used to emit sound to the external space of the shell. One end of the pipe is located in the internal space, and the other end of the pipe is fixedly connected to the shell. The pipe connects the internal space of the shell with the external space of the shell. The pipe includes a first tube body, a second tube body, and a first sheet-like structure. The first tube body is fixedly connected to one end of the second tube body. The first tube body has a first inner side surface. The first sheet-like structure is located inside the first tube body and is fixedly connected to the first inner side surface. The first sheet-like structure includes a first surface arranged away from the first inner side surface. The second tube body has a second inner side surface. In the height direction of the first sheet-like structure, the distance between the portion of the first surface close to the second tube body and the central axis of the second tube body is greater than or equal to the distance between the portion of the second inner side surface close to the first tube body and the central axis of the second tube body.

[0005] It is understandable that, compared to the pipe in a typical sound-generating device, when the sound-generating device is operating, the air inside the pipe has a higher flow rate and higher air pressure in the low-frequency band, while the air pressure in the external environment is relatively low. As a result, due to the drop in air pressure at the pipe opening, the high-pressure air at the pipe opening will quickly flow toward the surrounding low-pressure area. At this time, an outward-spinning airflow will form in the area outside the pipe opening, generating airflow noise at the pipe opening, resulting in a poor sound effect of the sound-generating device. The pipe of the sound-generating device in this embodiment can include a first pipe body and at least one first sheet-like structure. The first sheet-like structure can be fixed to the first inner side surface of the first pipe body. Thus, when the sound-generating device is operating, the first sheet-like structure can increase the contact area between the air flowing through the first pipe body and the pipe, thereby increasing the viscous resistance of the air flowing through the first pipe body, slowing the flow rate of the air in the first pipe body, and thereby reducing the airflow noise generated by the high-speed rotation of the air at the pipe opening, thereby improving the sound effect of the sound-generating device.

[0006] Secondly, compared to the pipe of a typical sound-generating device, which has a sheet-like structure on its inner side that is equivalent to the length of the pipe, this sheet-like structure takes up a significant amount of internal space, reducing air flow through the pipe and resulting in poor low-frequency performance. The pipe of the sound-generating device in this embodiment can include a first pipe body and a second pipe body connected in sequence. The first pipe body can have a first sheet-like structure fixed to its inner side, while the second pipe body can be free of the sheet-like structure. Thus, when the sound-generating device is operating, the first sheet-like structure effectively reduces the air flow velocity in the first pipe body, thereby reducing the airflow noise generated by the high-speed swirling flow of air at the first end of the pipe. Furthermore, the absence of the sheet-like structure in the second pipe body in this embodiment increases air flow within the second pipe body, thereby increasing air flow throughout the entire pipe. This improves the pipe's ability to enhance the low-frequency sound quality of the sound-generating device and enhances its low-frequency performance. In other words, the pipe of the sound-generating device in this embodiment can reduce turbulent noise while maintaining low-frequency performance, enhancing the user experience.

[0007] Furthermore, in this embodiment, the first sheet-like structure has a first surface facing away from the first inner side surface. The distance between the portion of the first surface proximate to the second tube and the central axis of the second tube can be greater than or equal to the distance between the second inner side surface and the central axis of the second tube. Thus, when the distance between the portion of the first surface proximate to the second tube and the central axis of the second tube is equal to the distance between the portion of the second inner side surface proximate to the first tube and the central axis of the second tube, the portion of the first surface proximate to the second tube is flush with the portion of the second inner side surface proximate to the first tube. In this case, the transition between the second inner side surface and the first surface is smoother, thereby preventing turbulence within the pipe caused by the step between the second inner side surface and the first surface, which could generate noise and affect the sound quality of the sound-generating device. When the distance between the portion of the first surface proximate to the second tube and the central axis of the second tube is greater than the distance between the portion of the second inner side surface proximate to the first tube and the central axis of the second tube, the size of the first tube can be increased while the size of the second tube remains unchanged. This increases the air flow in the first tube, and thus the air flow throughout the entire pipe, which helps improve the pipe's ability to improve the low-frequency sound quality of the sound-generating device and enhance the low-frequency performance of the sound-generating device.

[0008] In one possible implementation, the portion of the first surface adjacent to the second tube body is flush with the portion of the first inner side surface adjacent to the second tube body. This provides a smoother transition between the first inner side surface and the first surface, thereby preventing turbulence within the pipe caused by the step between the first inner side surface and the first surface, which could generate noise and affect the sound output of the sound-generating device.

[0009] In one possible implementation, the portion of the first inner side surface adjacent to the second tube body is flush with the portion of the second inner side surface adjacent to the first tube body. This provides a smoother transition between the first and second inner side surfaces, thereby preventing turbulence within the pipe caused by the step between the first and second inner side surfaces, which could generate noise and affect the sound output of the sound-generating device.

[0010] In one possible implementation, the first tube body has a first end face and a second end face. The first end face is arranged to face away from the second tube body. The second end face is fixedly connected to the second tube body. The first end face and the second end face are both annular. The area of ​​the region enclosed by the first end face is the first area, and the area of ​​the region enclosed by the second end face is the second area. The first area is greater than or equal to the second area. In this way, when the first area is greater than the second area, the flow rate of air when flowing through the first end face is less than the flow rate of air when flowing through the second end face. That is, the pipe in this embodiment can slow down the flow rate of air when flowing through the first end face, thereby reducing the airflow noise generated by the high-speed rotation of air at the opening of the pipe, thereby improving the sound effect of the sound-emitting device. When the first area is equal to the second area, the first tube body can be roughly cylindrical, which is easy to prepare.

[0011] In one possible implementation, the second tube body has a third end surface. The second end surface of the first tube body is fixedly connected to the third end surface of the second tube body. The third end surface is annular. The area enclosed by the third end surface is a third area. The second area of ​​the first tube body is greater than or equal to the third area of ​​the second tube body. Thus, when the second area is greater than the third area, while the dimensions of the second tube remain unchanged, the internal space of the first tube can be increased, thereby increasing the air flow through the first tube body, and thus increasing the air flow through the tube. This improves the tube's ability to improve the low-frequency sound quality of the sound-generating device and enhances the low-frequency performance of the sound-generating device. When the second area is equal to the third area, the portion of the first inner side surface proximate to the second tube body is flush with the portion of the second inner side surface proximate to the first tube body. The transition between the first inner side surface and the second inner side surface is relatively smooth, thereby preventing turbulence within the tube due to the step difference between the first inner side surface and the second inner side surface, which could generate noise and affect the sound output of the sound-generating device.

[0012] In one possible implementation, there are multiple first sheet structures, which are spaced apart along the circumference of the first tube body. A first gap exists between two adjacent first sheet structures, and the width of the first gap decreases toward the central axis of the first tube body.

[0013] It is understood that the width of the first gap formed between two adjacent first sheet-like structures of the pipe in this embodiment can decrease in the direction toward the central axis of the pipe along the length extension direction of the first pipe body. In this way, when the pipe size and the first sheet-like structure size are the same, when air flows through the first pipe body, the contact area between the portion of air near the first inner side surface of the first pipe body and the pipe is larger, thereby effectively slowing the flow rate of the portion of air near the first inner side surface of the first pipe body, thereby reducing the airflow noise generated by the high-speed rotation of the air at the first end of the pipe, thereby improving the sound output effect of the sound-generating device.

[0014] In one possible implementation, the width of the first gap decreases in the direction from the first end face to the second end face. In this way, the area of ​​the region enclosed by two adjacent first sheet-like structures and the first inner side surface increases in the direction from the second end face to the first end face. When the sound-emitting device is operating, the first sheet-like structure in this embodiment can increase the contact area between the air and the pipe when flowing through the first end face, thereby increasing the viscous resistance of the air when flowing through the first pipe body, slowing down the flow speed of the air flow in the first pipe body of the pipe, and thereby reducing the airflow noise generated by the high-speed rotation of the air at the opening of the pipe, thereby improving the sound effect of the sound-emitting device.

[0015] In one possible implementation, the height of the first sheet structure decreases in the direction from the first end face to the second end face. Thus, the area of ​​the region enclosed by two adjacent first sheet structures and the first inner side surface increases in the direction from the second end face to the first end face. When the sound-generating device is operating, the first sheet structure in this embodiment can increase the contact area between the air and the pipe when it flows through the first end face, thereby increasing the viscous resistance of the air when it flows through the first pipe body, slowing down the flow rate of the air flow in the first pipe body of the pipe, and thereby reducing the airflow noise generated by the high-speed rotation of the air at the opening of the pipe, thereby improving the sound effect of the sound-generating device.

[0016] In one possible implementation, the first tube body further includes a first mounting groove. The opening of the first mounting groove is formed on the first inner side surface and the second end surface of the first tube body. At least a portion of the second tube body is located within the first mounting groove. Thus, when the second tube body is assembled with the first tube body, a portion of the second tube body can be located within the first mounting groove, thereby preventing the connection between the first and second tube bodies from being disturbed by the external environment. This makes the connection between the first and second tube bodies more reliable, thereby increasing the service life of the pipeline and, in turn, the service life of the sound-generating device.

[0017] In one possible implementation, the first sheet structure and the first tube body are integrally formed, which can reduce the difficulty of preparing the first sheet structure and the first tube body, reduce the processing cost of the pipeline, and further reduce the processing cost of the sound-generating device.

[0018] In one possible implementation, the pipeline further includes a third tube body. The second tube body is fixedly connected between the third tube body and the first tube body. The tube body further includes a second sheet-like structure. The third tube body has a third inner side surface. The second sheet-like structure is located inside the third tube body and fixedly connected to the third inner side surface.

[0019] It is understandable that both ends of the tube body in this embodiment (i.e., the first tube body and the third tube body) can be provided with a sheet structure. When the sound-generating device is working, in the process of the air in the internal space of the shell flowing to the external space of the shell through the pipe, the first sheet structure and the second sheet structure can increase the contact area of ​​the air with the first tube body and the third tube body when the air flows through the first tube body and the third tube body, thereby increasing the viscous resistance of the air when it flows through the first tube body and the third tube body, slowing down the flow speed of the air in the first tube body and the third tube body, and thus reducing the air flow noise at both ends of the pipe, thereby improving the sound effect of the sound-generating device. At the same time, the second tube body of the pipe is not provided with a sheet structure, thereby increasing the air circulation volume in the second tube body, increasing the air circulation volume in the entire pipe, improving the effect of the pipe on improving the sound quality of the low-frequency band of the sound-generating device, and thereby improving the sound effect of the sound-generating device.

[0020] In one possible implementation, the second sheet-like structure includes a second surface disposed opposite the third inner surface. In the height direction of the second sheet-like structure, the distance between the portion of the second surface proximate the second tube and the central axis of the second tube is greater than or equal to the distance between the portion of the second inner surface proximate the third tube and the central axis of the second tube. Thus, when the distance between the portion of the second surface proximate the second tube and the central axis of the second tube is equal to the distance between the portion of the second inner surface proximate the third tube and the central axis of the second tube, the transition between the second inner surface and the second surface is smoother, thereby preventing turbulence within the pipe due to the step between the second inner surface and the second surface, which could cause noise and affect the sound quality of the sound-generating device. When the distance between the portion of the second surface proximate the second tube and the central axis of the second tube is greater than the distance between the portion of the second inner surface proximate the third tube and the central axis of the second tube, the size of the third tube can be increased while the size of the second tube remains unchanged, thereby increasing the air flow within the third tube and, consequently, the air flow throughout the entire pipe, thereby enhancing the pipe's ability to improve the low-frequency sound quality of the sound-generating device and improving the low-frequency performance of the sound-generating device.

[0021] In one possible implementation, the portion of the second surface proximate to the second tube body is flush with the portion of the third inner side surface proximate to the second tube body. This provides a smoother transition between the third inner side surface and the second surface, thereby preventing turbulence within the tube caused by the step between the third inner side surface and the second surface, which could generate noise and affect the sound output of the sound-generating device.

[0022] In one possible implementation, the portion of the third inner side surface adjacent to the second tube body is flush with the portion of the second inner side surface adjacent to the third tube body. This provides a smoother transition between the second inner side surface and the third inner side surface, and a smoother transition between the second tube body and the third tube body. This prevents turbulence within the pipe caused by the step between the second inner side surface and the third inner side surface, which could generate noise and affect the sound output of the sound-generating device.

[0023] In one possible implementation, the second tube body has a fourth end face, and the third tube body has a fifth end face, with the fourth end face fixedly connected to the fifth end face. Both the fourth and fifth end faces are annular, with the area enclosed by the fourth end face being the fourth area, and the area enclosed by the fifth end face being the fifth area, with the fifth area being greater than or equal to the fourth area. Thus, when the fourth area is greater than the fifth area, while the dimensions of the second tube remain unchanged, the internal space of the third tube can be increased, thereby increasing the air flow through the third tube body, and thus increasing the air flow through the tube. This improves the tube's ability to improve the low-frequency sound quality of the sound-generating device and enhances the low-frequency performance of the sound-generating device. When the fourth area is equal to the fifth area, the portion of the third inner side surface proximate to the second tube body is flush with the portion of the second inner side surface proximate to the third tube body. The transition between the third inner side surface and the second inner side surface is relatively smooth, thereby ensuring a smooth transition between the third and second tube bodies. This avoids turbulence within the tube due to the step difference between the third and second inner sides, which could cause noise and affect the sound quality of the sound-generating device.

[0024] In one possible implementation, there are multiple second sheet structures, which are spaced apart along the circumferential direction of the third tube body. There is a second gap between two adjacent second sheet structures, and the width of the second gap decreases along the direction toward the central axis of the third tube body.

[0025] It is understood that the width of the second gap formed between two adjacent second sheet-like structures of the duct in this embodiment can decrease along the length extension direction of the third tube body, in the direction toward the central axis of the duct. Thus, when the duct and the second sheet-like structures have the same dimensions, when air flows through the third tube body, the portion of air near the third inner side surface of the third tube body has a larger contact area with the duct, thereby effectively slowing the flow rate of the air near the third inner side surface of the third tube body, thereby reducing the airflow noise generated by the high-speed rotation of the air at the third end of the duct, thereby improving the sound output of the sound-generating device.

[0026] In one possible implementation, the third tube body has a sixth end face, which is arranged away from the second tube body. The sixth end face is annular, and the area of ​​the region enclosed by the sixth end face is the sixth area, which is greater than or equal to the fifth area. In this way, when the sixth area is greater than the fifth area, the flow rate of air passing through the sixth end face is less than the flow rate of air passing through the fifth end face. That is, the pipe in this embodiment can slow down the flow rate of air when it flows through the sixth end face, thereby reducing the airflow noise generated by the high-speed rotation of air at the opening of the pipe, thereby improving the sound effect of the sound-emitting device. When the sixth area is equal to the fifth area, the third tube body can be roughly cylindrical, which is easy to prepare.

[0027] In one possible implementation, there are multiple second sheet structures, and the multiple second sheet structures are spaced apart along the circumferential direction of the third tube body. A second gap is provided between two adjacent second sheet structures, and the width of the second gap decreases from the sixth end face toward the fifth end face. In this way, the area of ​​the region enclosed by the two adjacent second sheet structures and the second inner side surface increases from the fifth end face toward the sixth end face. When the sound-emitting device is working, the second sheet structure in this embodiment can increase the contact area between the air and the pipe when it flows through the sixth end face, thereby increasing the viscous resistance of the air when it flows through the third tube body, slowing down the flow speed of the air flow in the third tube body of the pipe, and thereby reducing the airflow noise generated by the high-speed rotation of the air at the opening of the pipe, thereby improving the sound effect of the sound-emitting device.

[0028] In one possible implementation, the height of the second sheet-like structure in the radial direction of the third tube body decreases from the sixth end face toward the fifth end face. Thus, the area of ​​the region enclosed by two adjacent second sheet-like structures and the second inner side surface increases from the fifth end face toward the sixth end face. When the sound-generating device is operating, the second sheet-like structure in this embodiment can increase the contact area between the air and the pipe when flowing through the sixth end face, thereby increasing the viscous resistance of the air when flowing through the third tube body, slowing the flow rate of the air flow in the third tube body of the pipe, and thereby reducing the airflow noise generated by the high-speed rotation of the air at the opening of the pipe, thereby improving the sound effect of the sound-generating device.

[0029] In one possible implementation, the third tube further includes a second mounting groove formed on a fifth end surface of the third tube, with at least a portion of the second tube located within the second mounting groove. Thus, when the second tube is assembled with the first tube, a portion of the second tube can be located within the third mounting groove, thereby preventing the connection between the second and third tubes from being disturbed by the external environment. This makes the connection between the second and third tubes more reliable, thereby extending the service life of the pipe and, in turn, the sound-generating device.

[0030] In one possible implementation, the second sheet structure and the third tube body are integrally formed, which can reduce the difficulty of preparing the third sheet structure and the third tube body, reduce the processing cost of the pipeline, and further reduce the processing cost of the sound-generating device.

[0031] In one possible implementation, the length of the first tube is greater than that of the third tube. It is understood that, compared to a typical pipe comprising a first tube and a third tube of equal length, when the pipe and the first tube are of the same size, the second tube is shorter, resulting in less air flow through the pipe, affecting the pipe's ability to improve the low-frequency sound quality of the sound-generating device and causing poor sound quality. In this embodiment, the third tube can be shorter than the first tube. This allows the second tube to be lengthened while maintaining the same overall length as the first tube, thereby increasing the internal volume of the pipe and increasing air flow throughout the pipe. When the sound-generating device is operating, the noise generated by air flowing from the first tube to the exterior of the housing is greater than the noise generated by air flowing from the interior of the housing into the third tube. In other words, the pipe in this embodiment can simultaneously maintain low air noise while increasing air flow within the pipe, improving the low-frequency sound quality of the sound-generating device and, consequently, enhancing the sound quality of the sound-generating device.

[0032] In one possible implementation, the first area of ​​the first tube is greater than the sixth area of ​​the third tube. It is understood that the airflow noise generated when air flows from the interior space of the housing to the third tube of the duct has a minimal impact on the sound output of the sound-generating device. If the dimensions of the duct, the first tube, and the second tube are all the same, the sixth area of ​​the third tube is smaller than the first area of ​​the first tube. This can reduce the manufacturing cost of the duct, and thereby the manufacturing cost of the sound-generating device, while ensuring low airflow noise from the sound-generating device.

[0033] In one possible implementation, compared to the pipe of a typical sound-generating device, the length of the second pipe body is a smaller proportion of the total pipe length. This results in a longer portion of the pipe with the sheet-like structure, a smaller internal volume, and a reduced air flow rate. In this embodiment, the length of the second pipe body can be greater than or equal to 50% of the total pipe length. Thus, while the pipe dimensions remain the same, the longer second pipe body in this embodiment can increase the internal volume of the pipe, thereby increasing the air flow rate throughout the pipe. This improves the pipe's ability to enhance the low-frequency sound quality of the sound-generating device and enhances the low-frequency performance of the sound-generating device.

[0034] In one possible implementation, the housing has a first mounting hole that connects the interior of the housing with the exterior of the housing. The speaker covers the first mounting hole and isolates it from the interior, emitting sound through the first mounting hole to the exterior of the housing. Thus, when the sound-generating device is operating, the speaker's diaphragm vibrates and produces sound. When the speaker operates in the low-frequency band, the acoustic mass of the air inside the duct and the acoustic compliance of the housing's interior resonate, radiating low-frequency sound waves and improving the low-frequency performance of the sound-generating device.

[0035] In a second aspect, an electronic device is provided. The electronic device includes a device housing and the aforementioned sound-generating device, wherein the sound-generating device is mounted on the device housing. The electronic device in this embodiment can reduce turbulent noise while maintaining low-frequency performance, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the implementation methods or background technologies of the present application, the drawings required for use in the implementation methods or background technologies of the present application will be described below.

[0037] Figure 1 This is a schematic structural diagram of an embodiment of a sound-generating device provided in an embodiment of the present application;

[0038] Figure 2 yes Figure 1 A schematic structural diagram of the sound-generating device shown in another perspective;

[0039] Figure 3 yes Figure 1 The schematic diagram of the exploded structure of the sound-generating device in some embodiments is shown;

[0040] Figure 4 yes Figure 1 The diagram shows a partial cross-sectional structure of a sound-generating device in one embodiment cut along line AA;

[0041] Figure 5 yes Figure 1 The diagram shows a partial cross-sectional structure of a sound-generating device in one embodiment cut along line BB;

[0042] Figure 6 yes Figure 3 The shown pipeline is a schematic diagram of the structure in some embodiments;

[0043] Figure 7 yes Figure 6 The schematic diagram of the exploded structure of the pipeline in some embodiments is shown;

[0044] Figure 8 yes Figure 7The schematic diagram of the structure of the first pipe body of the pipeline in some embodiments is shown;

[0045] Figure 9 yes Figure 6 The shown part of the structure of the pipeline is a partial cross-sectional structural schematic diagram of an embodiment cut along CC;

[0046] Figure 10 yes Figure 7 The schematic diagram of the assembly structure of the first tube body and the second tube body in some embodiments is shown;

[0047] Figure 11 yes Figure 6 The shown part of the structure of the pipeline is a partial cross-sectional structural schematic diagram of an embodiment cut along CC;

[0048] Figure 12 yes Figure 7 The schematic diagram of the structure of the third pipe body of the pipeline in some embodiments is shown;

[0049] Figure 13 yes Figure 6 The shown part of the structure of the pipeline is a partial cross-sectional structural schematic diagram of an embodiment cut along CC;

[0050] Figure 14 yes Figure 6 The schematic diagram of the structure of the pipeline shown in another perspective;

[0051] Figure 15 yes Figure 6 The cross-sectional structure diagram of a pipeline cut along CC in one embodiment is shown;

[0052] Figure 16 yes Figure 1 The cross-sectional structural diagram of an embodiment of the sound-generating device shown is taken along AA;

[0053] Figure 17 yes Figure 3 Schematic diagram comparing the air flow rate of the pipe of the sound-generating device shown and the pipe of a general sound-generating device. DETAILED DESCRIPTION

[0054] The embodiments of the present application are described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0055] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. "Multiple" means at least two.

[0056] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of the features.

[0057] In the embodiments of this application, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0058] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in some other embodiments," and "in another embodiment" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0059] It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for ease of description, only parts related to the utility model are shown in the accompanying drawings.

[0060] Figure 1It is a structural diagram of an embodiment of the sound-emitting device 100 provided in an embodiment of the present application. Figure 2 yes Figure 1 The structure diagram of the sound-generating device 100 shown is from another perspective. Figure 3 yes Figure 1 The figure shows a schematic diagram of the exploded structure of the sound-generating device 100 in some embodiments.

[0061] like Figures 1 to 3 As shown, the electronic device may be a tablet computer, a multimedia player, headphones, speakers, a laptop computer, a vehicle-mounted device, a foldable terminal device, a television, a wearable device, or other device capable of playing sound. Figure 1 The sound-generating device 100 is described using a speaker as an example. In other embodiments, Figure 1 The sound-generating device 100 shown can also be used in electronic devices to realize the sound-generating function of the electronic devices. For example, the sound-generating device 100 can be installed in the device housing of the electronic device. The sound-generating device 100 can be used to realize the audio function of the electronic device. It should be noted that Figures 1 to 3 The following figures and the related drawings only schematically illustrate some components of the sound generating device 100, and the actual shape, size, position and structure of these components are not affected by the present invention. Figure 1 For ease of description, the width direction of the sound-generating device 100 is defined as the X-axis direction, the length direction is defined as the Y-axis direction, and the thickness direction is defined as the Z-axis direction. It is understood that the coordinate system setting of the sound-generating device 100 can be flexibly set according to specific actual needs.

[0062] For example, the sound-generating device 100 may include a housing 110, a speaker 120, and a circuit assembly 130. The housing 110 may be a rectangular parallelepiped with rounded corners. The housing 110 may have an interior space 110a. The speaker 120 and the circuit assembly 130 may both be installed in the interior space 110a of the housing 110. The number of speakers 120 may be one or more. In other embodiments, the housing 110 may also have other shapes.

[0063] For example, the circuit assembly 130 can electrically connect the speaker 120 to an external power source. Thus, the circuit assembly 130 can transmit electrical energy from the external power source to the speaker 120, enabling the speaker 120 to operate. When the speaker 120 is operating, the speaker 120 can emit sound into the space outside the housing 110, thereby achieving the sound-producing function of the sound-producing device 100.

[0064] In other embodiments, the sound-generating device 100 may not include the circuit component 130 .

[0065] Figure 4 yes Figure 1 The diagram shows a partial cross-sectional structure of a sound-generating device 100 in an embodiment cut along line AA. Figure 5 yes Figure 1 The diagram shows a partial cross-sectional structure of a sound-generating device 100 in an embodiment cut along line BB.

[0066] like Figures 3 to 5 As shown, the housing 110 may have a first mounting hole 111. The first mounting hole 111 may penetrate one of the side walls of the housing 110 to connect the interior space 110a of the housing 110 with the exterior space of the housing 110. The first mounting hole 111 may be formed on a side wall of the housing 110 having a larger area.

[0067] For example, the speaker 120 can be fixedly connected to the housing 110 and can cover the first mounting hole 111. In this case, at least a portion of the speaker 120 can be exposed relative to the first mounting hole 111. The speaker 120 can emit sound to the external space of the housing 110 through the first mounting hole 111.

[0068] For example, the speaker 120 may include a diaphragm 121. The diaphragm 121 may cover the first mounting hole 111. At least a portion of the diaphragm 121 may be exposed relative to the first mounting hole 111. The diaphragm 121 may isolate the interior space 110a of the housing 110 from the exterior space of the housing 110. Other components of the speaker 120 (e.g., the voice coil, magnetic circuit assembly, etc.) may be housed in the interior space 110a of the housing 110.

[0069] In other embodiments, the first mounting hole 111 may also be located on other surfaces of the housing 110. For example, the first mounting hole 111 may be located on a side wall of the housing 110 having a smaller area.

[0070] like Figures 3 to 5 As shown, the shell 110 may also have a second mounting hole 112. The second mounting hole 112 may be spaced apart from the first mounting hole 111. The second mounting hole 112 may pass through one of the side walls of the shell 110 to connect the internal space 110a of the shell 110 with the external space of the shell 110. The second mounting hole 112 may be formed on a side wall of the shell 110 having a smaller area. The circuit assembly 130 may be fixedly connected to the second mounting hole 112 and may cover the second mounting hole 112. The circuit assembly 130 may have a power interface 131. The power interface 131 may be exposed relative to the second mounting hole 112. In this way, an external power source may be electrically connected to the power interface 131 of the circuit assembly 130 to supply power to the sound-emitting device 100. In other embodiments, the second mounting hole 112 may also be located on other surfaces of the shell 110.

[0071] Figure 6 yes Figure 3 The pipeline 140 is shown as a schematic diagram of the structure in some embodiments. Figure 7 yes Figure 6 A schematic diagram of the exploded structure of the pipeline 140 in some embodiments is shown.

[0072] like Figure 6 and Figure 7 As shown, the pipe 140 may include a first pipe body 10, a second pipe body 20, and a third pipe body 30. The second pipe body 20 may be fixedly connected between the first pipe body 10 and the third pipe body 30. The first pipe body 10, the second pipe body 20, and the third pipe body 30 of the pipe 140 may all be hollow structures. The first pipe body 10 may have a first through hole 10a, the second pipe body 20 may have a second through hole 20a, and the third pipe body 30 may have a third through hole 30a. The second through hole 20a may connect the first through hole 10a and the third through hole 30a. For example, the first pipe body 10, the second pipe body 20, and the third pipe body 30 may all be elongated. In other embodiments, one or more of the first pipe body 10, the second pipe body 20, and the third pipe body 30 may also have other shapes, such as an L-shape or an S-shape. This application does not specifically limit this.

[0073] For example, the first tube body 10, the second tube body 20 and the third tube body 30 of the pipe 140 can be processed and manufactured separately, and then assembled to obtain the complete pipe 140 structure. In this way, the manufacturing method of the pipe 140 is relatively simple, which can reduce the difficulty of preparing the pipe 140.

[0074] In some embodiments, the first tube body 10 and the second tube body 20 may be integrally formed, while the third tube body 30 may be manufactured separately. Alternatively, the second tube body 20 and the third tube body 30 may be integrally formed, while the first tube body 10 may be manufactured separately. In other embodiments, the first tube body 10, the second tube body 20, and the third tube body 30 may all be integrally formed. It is understood that the manufacturing method of the conduit 140 can be flexibly selected based on actual needs.

[0075] In some embodiments, the pipeline 140 may not include the third pipe body 30 .

[0076] Figure 8 yes Figure 7 The structure of the first pipe body 10 of the pipeline 140 shown in some embodiments is schematically shown. Figure 9 yes Figure 6 The shown portion is a schematic diagram of a partial cross-sectional structure of a pipe 140 in an embodiment cut along CC.

[0077] like Figure 8 and Figure 9As shown, the first tube body 10 can be roughly trumpet-shaped. The first tube body 10 can include a first end 11 and a second end 12. The first end 11 can have a first end surface 11a disposed opposite the second end 12. The first end surface 11a can be approximately annular, and the area enclosed by the first end surface 11a can have a first area. The second end 12 can have a second end surface 12a disposed opposite the first end 11. The second end surface 12a can be approximately annular, and the area enclosed by the second end surface 12a can have a second area. The first area can be greater than the second area. The radial dimension of the first through hole 10a can decrease along the length of the first tube body 10, from the first end surface 11a toward the second end surface 12a. In other embodiments, the first tube body 10 can have other shapes. For example, the first tube body 10 can have a cylindrical structure. In this case, the first area can be equal to the second area. The radial dimension of the first through hole 10a can be equal at all locations along the length of the first tube body 10. It should be noted that the area of ​​the region enclosed by the ring may be the area of ​​the region enclosed by the inner side of the ring. The radial dimension of a component may be the inner diameter of the component. Unless otherwise specified, the area of ​​the region enclosed by the ring and the radial dimension of a component may be understood in the same manner as described above.

[0078] Exemplarily, the pipe 140 may further include a first sheet-like structure 40. The first tube body 10 may have a first inner side surface 13. The first sheet-like structure 40 may be located on the inner side of the first tube body 10 and may be fixedly connected to the first inner side surface 13. The number of first sheet-like structures 40 may be one or more. The plurality of first sheet-like structures 40 may be spaced apart along the circumferential direction of the first tube body 10. Exemplarily, the plurality of first sheet-like structures 40 may be evenly distributed on the first inner side surface 13. That is, the distance between any two adjacent first sheet-like structures 40 may be equal. In other embodiments, the plurality of first sheet-like structures 40 may also be unevenly distributed on the first inner side surface 13.

[0079] For example, a first gap 40a may be formed between two adjacent first sheet structures 40. The width of the first gap 40a may decrease in a direction toward the central axis of the first tube body 10. In this case, the two adjacent first sheet structures 40 and the first inner side surface 13 may together form a "concave"-shaped structure. For example, the width of the first gap 40a may also decrease along the longitudinal extension direction of the first tube body 10, along the first end surface 11a toward the second end surface 12a.

[0080] For example, the first sheet structure 40 may include a first surface 40b disposed away from the first inner side surface 13. The height of the first sheet structure 40 may decrease along the direction from the first end surface 11a toward the second end surface 12a. The height direction of the first sheet structure 40 may be parallel to the radial direction of the first tube body 10. For example, the portion of the first surface 40b near the second end surface 12a may be flush with the first inner side surface 13.

[0081] For example, the first sheet structure 40 can be integrally formed with the first tube body 10. In other embodiments, the first sheet structure 40 and the first tube body 10 can also be processed and manufactured separately.

[0082] Figure 10 yes Figure 7 FIG. 1 is a schematic diagram of the assembly structure of the first tube 10 and the second tube 20 in some embodiments. Figure 11 yes Figure 6 The shown portion is a schematic diagram of a partial cross-sectional structure of a pipe 140 in an embodiment cut along CC.

[0083] like Figure 10 and Figure 11 As shown, the second tube body 20 can be roughly cylindrical. The second tube body 20 can include a third end 21 and a fourth end 22. The third end 21 can have a third end surface 21a disposed opposite to the fourth end 22. The third end surface 21a can be approximately annular, and the area enclosed by the third end surface 21a can be a third area. The fourth end 22 can have a fourth end surface 22a disposed opposite to the third end 21. The fourth end surface 22a can be approximately annular, and the area enclosed by the fourth end surface 22a can be a fourth area. The third area can be equal to the fourth area. In other embodiments, the second tube body 20 can also have other shapes.

[0084] For example, the third end 21 of the second tube body 20 can be fixedly connected to the second end 12 of the first tube body 10. The second end 12 of the first tube body 10 can also be provided with a first mounting groove 10b ( Figure 9 The structure of the first mounting groove 10b is also shown. The opening of the first mounting groove 10b can be formed on the first inner side surface 13 and the second end surface 12a. In this case, the area enclosed by the second end surface 12a can be the area enclosed by the side of the first mounting groove 10b facing the central axis of the first tube body 10.

[0085] For example, the first sheet-like structure 40 may be located outside the first mounting groove 10b. A portion of the third end 21 of the second tube 20 may be located within the first mounting groove 10b. The second tube 20 may further have a second inner side surface 23. The second inner side surface 23 may be flush with the first inner side surface 13 of the first tube 10. In other embodiments, the second inner side surface 23 may be located closer to the central axis of the second tube 20 than the first inner side surface 13 of the first tube 10. In this case, the third area may be smaller than the second area.

[0086] For example, in the height direction of the first sheet structure 40, the distance between the portion of the first surface 40b proximate to the second tube body 20 and the central axis of the second tube body 20 is a first distance H1. The distance between the portion of the second inner side surface 23 proximate to the first tube body 10 and the central axis of the second tube body 20 is a second distance H2. The first distance H1 can be equal to the second distance H2. In this case, the portion of the second inner side surface 23 proximate to the first tube body 10 can be flush with the portion of the first surface 40b of the first sheet structure 40 proximate to the second tube body 20. In other embodiments, the first distance H1 can be greater than the second distance H2.

[0087] Figure 12 yes Figure 7 The third tube body 30 of the pipeline 140 is shown as a schematic structural diagram in some embodiments. Figure 13 yes Figure 6 The shown portion is a schematic diagram of a partial cross-sectional structure of a pipe 140 in an embodiment cut along CC.

[0088] like Figure 12 and Figure 13 As shown, the third tube body 30 can be roughly trumpet-shaped. The third tube body 30 can include a fifth end 31 and a sixth end 32. The fifth end 31 can have a fifth end surface 31a disposed opposite the sixth end 32. The fifth end surface 31a can be approximately annular, and the area enclosed by the fifth end surface 31a can be a fifth area. The sixth end 32 can have a sixth end surface 32a disposed opposite the fifth end. The sixth end surface 32a can be approximately annular, and the area enclosed by the sixth end surface 32a can be a sixth area. The sixth area can be greater than the fifth area. The radial dimension of the third through hole 30a can decrease along the length of the third tube body 30, from the sixth end surface 32a toward the fifth end surface 31a. In other embodiments, the third tube body 30 can have other shapes. For example, the third tube body 30 can have a cylindrical structure. In this case, the fifth area can be equal to the sixth area.

[0089] Exemplarily, the pipe 140 may further include a second sheet-like structure 50. The third tube body 30 may further have a third inner side surface 33. The second sheet-like structure 50 may be located on the inner side of the third tube body 30 and may be fixedly connected to the third inner side surface 33. The number of second sheet-like structures 50 may be one or more. The plurality of second sheet-like structures 50 may be spaced apart along the circumferential direction of the third tube body 30. Exemplarily, the plurality of second sheet-like structures 50 may be evenly distributed on the third inner side surface 33. That is, the distance between any two adjacent second sheet-like structures 50 may be equal. In other embodiments, the plurality of second sheet-like structures 50 may also be unevenly distributed on the third inner side surface 33.

[0090] For example, a second gap 50a may be formed between two adjacent second sheet-like structures 50. The width of the second gap 50a may decrease in a direction toward the central axis of the third tube body 30. In this case, the two adjacent second sheet-like structures 50 and the third inner side surface 33 may together form a "concave"-shaped structure. For example, the width of the second gap 50a may also decrease along the longitudinal extension direction of the third tube body 30, along the sixth end surface 32a toward the fifth end surface 31a.

[0091] For example, the second sheet structure 50 may include a second surface 50b disposed away from the third inner side surface 33. The height of the second sheet structure 50 may decrease along the direction from the sixth end surface 32a toward the fifth end surface 31a. The height direction of the second sheet structure 50 may be parallel to the radial direction of the third tube body 30. For example, the portion of the second surface 50b near the fifth end surface 31a may be flush with the third inner side surface 33.

[0092] For example, the second sheet structure 50 can be integrally formed with the third tube body 30. In other embodiments, the second sheet structure 50 and the third tube body 30 can also be processed and manufactured separately.

[0093] Figure 14 yes Figure 6 The structure of the pipeline 140 shown is a schematic diagram from another perspective. Figure 15 yes Figure 6 The shown diagram is a cross-sectional structural diagram of a pipe 140 in one embodiment cut along CC.

[0094] like Figure 14 and Figure 15 As shown, the fifth end 31 of the third tube body 30 can be fixedly connected to the fourth end 22 of the second tube body 20. The fifth end 31 of the third tube body 30 can also be provided with a second mounting groove 30b ( Figure 7 and Figure 13The structure of the second mounting groove 30b is also shown. The opening of the second mounting groove 30b can be formed on the third inner side surface 33 and the fifth end surface 31a. In this case, the area enclosed by the fifth end surface 31a can be the area enclosed by the side of the second mounting groove 30b facing the central axis of the third tube body 30.

[0095] For example, the second sheet-like structure 50 can be located outside the second mounting groove 30b. A portion of the fourth end 22 of the second tube 20 can be located within the second mounting groove 30b. In this case, the third inner side surface 33 of the third tube 30 can be flush with the second inner side surface 23 of the second tube 20. In other embodiments, the second inner side surface 23 of the second tube 20 can be located closer to the central axis of the second tube 20 than the third inner side surface 33 of the third tube 30. In this case, the fourth area can be smaller than the fifth area.

[0096] For example, in the height direction of the second sheet structure 50, the distance between the portion of the second surface 50b proximate to the second tube body 20 and the central axis of the second tube body 20 is a third distance H3. The distance between the portion of the second inner side surface 23 proximate to the third tube body 30 and the central axis of the second tube body 20 is a fourth distance H4. The third distance H3 may be equal to the fourth distance H4. In this case, the portion of the second inner side surface 23 proximate to the third tube body 30 may be flush with the portion of the second surface 50b of the second sheet structure 50 proximate to the second tube body 20. In other embodiments, the third distance H3 may be greater than the fourth distance H4.

[0097] For example, the length of the second tube body 20 can be greater than or equal to 50% of the total length of the pipeline 140. It should be noted that the length of the second tube body 20 can be the distance between the third end face 21a and the fourth end face 22a of the second tube body 20 in the direction of the length of the second tube body 20. The lengths of other components can also refer to the above definitions and will not be further described.

[0098] Exemplarily, the length of the first tube 10 may be greater than the length of the third tube 30 .

[0099] Illustratively, the first area may be greater than the sixth area.

[0100] For example, the number of the first sheet structures 40 of the first tube 10 may be equal to the number of the second sheet structures 50 of the third tube 30. In other embodiments, the number of the first sheet structures 40 may not be equal to the number of the second sheet structures 50.

[0101] Figure 16 yes Figure 1 The cross-sectional structure diagram of the sound-generating device 100 in one embodiment is shown along AA.

[0102] like Figure 16 As shown, the sound generating device 100 may further include a pipe 140. The pipe 140 may be installed in the inner space 110a of the housing 110. The number of the pipes 140 may be one or more.

[0103] For example, the housing 110 may have a third mounting hole 113. The third mounting hole 113 may be spaced apart from the first mounting hole 111 and the second mounting hole 112. The third mounting hole 113 may penetrate one of the side walls of the housing 110 to connect the interior space 110a of the housing 110 with the space outside the housing 110. The third mounting hole 113 may be formed on a side wall of the housing 110 having a smaller area. The third mounting hole 113 may be located on the same side wall of the housing 110 as the second mounting hole 112.

[0104] Exemplarily, at least a portion of the pipe 140 can be located within the third mounting hole 113 and fixedly connected to the hole wall of the third mounting hole 113. The first end surface 11a of the first tube body 10 can face the external space of the shell 110 and communicate with the external space of the shell 110. In this case, the pipe 140 can connect the internal space 110a of the shell 110 and the external space of the shell 110. In other embodiments, the third mounting hole 113 can also be located on other side walls of the shell 110. In other embodiments, the first end 11 of the first tube body 10 of the pipe 140 can also be fixedly connected to the shell 110. The first through hole 10a of the first end 11 can communicate with the third mounting hole 113. In this case, the internal space 110a of the shell 110 can be connected to the external space of the shell 110 through the pipe 140 and the third mounting hole 113 in sequence.

[0105] For example, the housing 110 may further include a first mounting bracket 114 ( Figure 4 The structure of the first mounting bracket 114 is also shown. The first mounting bracket 114 can be located in the interior space 110a of the housing 110 and can be fixedly connected to the housing 110. The outer surface of the third tube body 30 of the pipe 140 can be fixedly connected to the first mounting bracket 114, so that the pipe 140 can be fixedly connected to the housing 110.

[0106] For example, when the sound-generating device 100 is operating, the diaphragm 121 of the speaker 120 vibrates to produce sound. When the speaker 120 operates in the low-frequency band, the acoustic mass of the air inside the duct 140 and the acoustic compliance of the interior space 110a of the housing 110 can resonate and radiate low-frequency sound waves, thereby improving the low-frequency performance of the sound-generating device 100.

[0107] Figure 17 yes Figure 3The diagram below compares the air flow rates of the pipe 140 of the sound-generating device 100 with those of a conventional sound-generating device. It should be noted that the solid curve represents the air flow rate at various locations along the diameter of the pipe 140, at the opening of the first end 11 of the first tube body 10 facing away from the second end 12; the dashed curve represents the air flow rate at various locations along the diameter of a conventional pipe. The zero point on the horizontal axis may represent the midpoint of the diameter, i.e., the central axis of the pipe 140.

[0108] like Figure 17 As shown, when the distance is less than -40 mm or greater than 40 mm, the air flow rate represented by the solid curve is significantly lower than the air flow rate represented by the dashed curve. In other words, when the first tube 10 is provided with the first sheet structure 40, the air flowing through the first tube 10 has a lower flow rate near the first inner side surface 13 of the first tube 10. In this case, the airflow noise at the first end 11 of the duct 140 is relatively low, and the sound output of the sound-generating device 100 is improved.

[0109] It can be understood that compared to the pipes in general sound-emitting devices. When the sound-emitting device is working, the air inside the pipe has a higher flow rate in the low-frequency band and a higher air pressure. At the opening of the pipe, due to the drop in air pressure, the high-pressure air at the opening of the pipe will flow rapidly to the surrounding area with low air pressure. At this time, an outward rotating airflow will be formed in the area outside the pipe orifice, thereby generating airflow noise at the opening of the pipe, making the sound effect of the sound-emitting device poor. The pipe 140 of the sound-emitting device 100 in this embodiment may include a first tube body 10 and at least one first sheet structure 40. The first sheet structure 40 can be fixed to the first inner side surface 13 of the first tube body 10. In this way, when the sound-emitting device 100 is working, the first sheet structure 40 can increase the contact area between the air and the pipe 140 when the air flows through the first tube body 10, thereby increasing the viscous resistance of the air when it flows through the first tube body 10, slowing down the flow speed of the air flow in the first tube body 10 of the pipe 140, and thus reducing the airflow noise generated by the high-speed rotation flow of the air at the opening of the pipe 140, thereby improving the sound effect of the sound-emitting device 100.

[0110] Secondly, compared to the pipe of a general sound-generating device, which has a sheet-like structure on its inner side that is equivalent to the length of the pipe, the sheet-like structure will occupy more of the inner space of the pipe, reducing the air flow rate of the pipe, resulting in poor low-frequency performance of the sound-generating device. The pipe 140 of the sound-generating device 100 in this embodiment can include a first tube body 10 and a second tube body 20 connected in sequence. The first sheet-like structure 40 can be fixed on the inner side of the first tube body 10, and the sheet-like structure can be not provided on the inner side of the second tube body 20. In this way, when the sound-generating device 100 is working, the first sheet-like structure 40 can effectively reduce the flow rate of air in the first tube body 10 of the pipe 140, thereby reducing the airflow noise generated by the high-speed rotation of the air at the first end 11 of the pipe 140. At the same time, in this embodiment, the second tube body 20 is not provided with a sheet-like structure, which can increase the air circulation in the second tube body 20, thereby increasing the air circulation in the entire pipe 140, which is conducive to improving the effect of the pipe 140 on improving the sound quality of the low-frequency band of the sound-emitting device 100 and improving the low-frequency performance of the sound-emitting device 100. In other words, the pipe 140 of the sound-emitting device 100 in this embodiment can reduce turbulent noise while taking into account the low-frequency performance, thereby improving the user experience.

[0111] In addition, the portion of the first surface 40b of the first sheet structure 40 of the pipe 140 in this embodiment near the second end face 12a can be flush with the portion of the second inner side surface 23 of the second tube body 20 near the third end face 21a. In this case, the transition between the second inner side surface 23 and the first surface 40b is relatively smooth. This can avoid turbulence and noise generated within the pipe 140 due to the step difference between the second inner side surface 23 and the first surface 40b, which would affect the sound effect of the sound-generating device 100. This is conducive to improving the effect of the pipe 140 in improving the sound quality of the low-frequency band of the sound-generating device 100 and enhancing the low-frequency performance of the sound-generating device 100.

[0112] In addition, the pipe 140 in this embodiment may further include a third pipe body 30 and at least one second sheet structure 50. The second pipe body 20 may be fixedly connected between the first pipe body 10 and the third pipe body 30. The second sheet structure 50 may be fixed to the third inner side surface 33 of the third pipe body 30. In this case, both ends of the pipe 140 (i.e., the first pipe body 10 and the third pipe body 30) may be provided with a sheet structure. Thus, when the sound-generating device 100 is in operation, as air from the interior space 110a of the housing 110 flows through the duct 140 to the exterior space of the housing 110, the first sheet-like structure 40 and the second sheet-like structure 50 increase the contact area between the air and the first and third tubes 10, 30. This increases the viscous resistance of the air as it flows through the first and third tubes 10, 30, slowing the air flow velocity within the first and third tubes 10, 30. This reduces the airflow noise at both ends of the duct 140 and improves the sound quality of the sound-generating device 100. Simultaneously, the second tube 20 of the duct 140 is not provided with a sheet-like structure. This increases the air flow rate within the second tube 20, thereby increasing the air flow rate throughout the entire duct 140, enhancing the duct 140's ability to improve the low-frequency sound quality of the sound-generating device 100 and, consequently, improving the sound quality of the sound-generating device 100.

[0113] In addition, compared to a pipe in which the width of the gap formed by adjacent sheet structures increases in the direction toward the central axis of the pipe, the width of the first gap 40a formed between two adjacent first sheet structures 40 of the pipe 140 in this embodiment can decrease in the direction toward the central axis of the pipe 140 along the length extension direction of the first pipe body 10. In this way, when the size of the pipe 140 and the size of the first sheet structure 40 are the same, when air flows through the first pipe body 10, the contact area between the portion of air near the first inner side surface 13 of the first pipe body 10 and the pipe 140 is larger, thereby effectively slowing down the flow rate of the portion of air near the first inner side surface 13 of the first pipe body 10, thereby reducing the airflow noise generated by the high-speed rotation of the air at the first end 11 of the pipe 140, thereby improving the sound output effect of the sound-generating device 100.

[0114] Furthermore, compared to the pipes of conventional sound-generating devices, the length of the second tube body accounts for a smaller proportion of the total length of the pipe, resulting in a longer portion of the pipe with the sheet-like structure and a smaller internal volume, which affects the air flow rate of the pipe. In contrast, the length of the second tube body 20 of the pipe 140 in this embodiment can be greater than or equal to 50% of the total length of the pipe 140. Thus, while the dimensions of the pipe 140 remain the same, the longer length of the second tube body 20 in this embodiment can increase the internal volume of the pipe 140, thereby increasing the air flow rate throughout the pipe 140. This helps enhance the effectiveness of the pipe 140 in improving the low-frequency sound quality of the sound-generating device 100 and improves the low-frequency performance of the sound-generating device 100.

[0115] Furthermore, compared to conventional pipes, which include a first tube and a third tube of equal length, when the pipe and first tube dimensions are identical, the second tube is shorter, resulting in less air flow through the pipe, impacting the pipe's ability to improve the low-frequency sound quality of the sound-generating device and resulting in poor sound quality. In this embodiment, the third tube 30 of the pipe 140 can be shorter than the first tube 10. This allows the second tube 20 of the pipe 140 to be lengthened while maintaining the overall length of the pipe 140 and the length of the first tube 10, thereby increasing the internal volume of the pipe 140 and the air flow throughout the pipe 140. When the sound-generating device 100 is in operation, the noise generated by air flowing from the first tube 10 of the pipe 140 to the exterior of the housing 110 is greater than the noise generated by air flowing from the interior space 110a of the housing 110 into the third tube 30 of the pipe 140. In other words, the pipe 140 in this embodiment can increase the air circulation in the pipe 140 while ensuring that the air noise in the pipe 140 is small, thereby improving the low-frequency sound quality of the sound-generating device 100 and further improving the sound effect of the sound-generating device 100.

[0116] Furthermore, in this embodiment, the first area of ​​the first tube body 10 of the duct 140 can be larger than the sixth area of ​​the third tube body 30. This reduces the impact of airflow noise generated when air flows from the interior space 110a of the housing 110 to the third tube body 30 of the duct 140 on the sound output of the sound-generating device 100. If the dimensions of the duct 140, the first tube body 10, and the second tube body 20 are all the same, the sixth area of ​​the third tube body 30 is smaller than the first area of ​​the first tube body 10. This can reduce the manufacturing cost of the duct 140, and thus the manufacturing cost of the sound-generating device 100, while ensuring low airflow noise.

[0117] In some embodiments, the duct 140 may not include the second sheet structure 50. It is understood that the airflow noise generated when air flows from the interior space 110a of the housing 110 to the third tube 30 of the duct 140 has little impact on the sound output of the sound-generating device 100. In this case, the manufacturing cost of the duct 140, and therefore the manufacturing cost of the sound-generating device 100, can be reduced while ensuring that the airflow noise of the sound-generating device 100 is low.

[0118] In some embodiments, the pipeline 140 may not have the third tube 30 .

[0119] It should be noted that, in the absence of conflict, the features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0120] It should be noted that all the above drawings are for illustrative purposes only and do not represent the actual size of the product. Furthermore, the dimensional ratios between the components in the drawings are not intended to limit the actual product of the present application.

[0121] The above are only some of the embodiments of this application, and the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A sound-generating device (100), characterized in that: The invention comprises a housing (110), a speaker (120) and a pipe (140), wherein the housing (110) has an internal space (110a), the speaker (120) and the pipe (140) are both installed in the internal space (110a), the speaker (120) is fixedly connected to the housing (110), and the speaker (120) is used to emit sound to the external space of the housing (110); One end of the pipe (140) is located in the internal space (110a), and the other end of the pipe (140) is fixedly connected to the shell (110), and the pipe (140) communicates the internal space (110a) of the shell (110) with the external space of the shell (110); The pipe (140) comprises a first pipe body (10), a second pipe body (20), and a first sheet-like structure (40); the first pipe body (10) is fixedly connected to one end of the second pipe body (20); the first pipe body (10) has a first inner side surface (13); the first sheet-like structure (40) is located inside the first pipe body (10) and is fixedly connected to the first inner side surface (13); The first sheet-like structure (40) includes a first surface (40b) disposed away from the first inner side surface (13); the second tube (20) has a second inner side surface (23); and in the height direction of the first sheet-like structure (40), a distance between a portion of the first surface (40b) close to the second tube (20) and a central axis of the second tube (20) is greater than or equal to a distance between a portion of the second inner side surface (23) close to the first tube (10) and the central axis of the second tube (20).

2. The sound-generating device (100) according to claim 1, characterized in that The portion of the first surface (40b) close to the second tube (20) is flush with the portion of the first inner side surface (13) close to the second tube (20).

3. The sound-generating device (100) according to claim 1, characterized in that: The portion of the first inner side surface (13) close to the second tube body (20) is flush with the portion of the second inner side surface (23) close to the first tube body (10).

4. The sound-generating device (100) according to any one of claims 1 to 3, characterized in that: The first tube body (10) has a first end surface (11a) and a second end surface (12a), the first end surface (11a) is arranged away from the second tube body (20), and the second end surface (12a) is fixedly connected to the second tube body (20); The first end surface (11a) and the second end surface (12a) are both annular, the area of ​​the region enclosed by the first end surface (11a) is a first area, the area of ​​the region enclosed by the second end surface (12a) is a second area, and the first area is greater than or equal to the second area.

5. The sound-generating device (100) according to any one of claims 1 to 3, characterized in that: The first tube body (10) has a second end surface (12a), the second tube body (20) has a third end surface (21a), and the second end surface (12a) is fixedly connected to the third end surface (21a); The second end face (12a) and the third end face (21a) are both annular, the area of ​​the region enclosed by the second end face (12a) is a second area, the area enclosed by the third end face (21a) is a third area, and the second area is greater than or equal to the third area.

6. The sound-generating device (100) according to any one of claims 1 to 3, characterized in that: There are multiple first sheet-like structures (40), and the multiple first sheet-like structures (40) are spaced apart along the circumferential direction of the first tube body (10). A first gap (40a) is provided between two adjacent first sheet-like structures (40), and the width of the first gap (40a) decreases in a direction toward the central axis of the first tube body (10).

7. The sound-generating device (100) according to claim 4, characterized in that There are multiple first sheet structures (40), and the multiple first sheet structures (40) are spaced apart along the circumferential direction of the first tube body (10). A first gap (40a) is provided between two adjacent first sheet structures (40), and the width of the first gap (40a) decreases along the direction from the first end face (11a) toward the second end face (12a).

8. The sound-generating device (100) according to claim 4, characterized in that The height of the first sheet-like structure (40) decreases in a direction from the first end surface (11a) toward the second end surface (12a).

9. The sound-generating device (100) according to claim 4, characterized in that: The first tube body (10) further comprises a first mounting groove (10b), the opening of the first mounting groove (10b) being formed on the first inner side surface (13) and the second end surface (12a) of the first tube body (10), and at least a portion of the second tube body (20) is located in the first mounting groove (10b).

10. The sound-generating device (100) according to any one of claims 1 to 3, characterized in that: The first sheet structure (40) and the first tube body (10) are integrally formed.

11. The sound-generating device (100) according to claim 1, characterized in that The pipeline (140) further includes a third pipe body (30), and the second pipe body (20) is fixedly connected between the third pipe body (30) and the first pipe body (10); The pipe (140) further includes a second sheet-like structure (50), the third tube body (30) has a third inner side surface (33), and the second sheet-like structure (50) is located on the inner side of the third tube body (30) and is fixedly connected to the third inner side surface (33).

12. The sound-generating device (100) according to claim 11, characterized in that The second sheet-like structure (50) has a second surface (50b) disposed away from the third inner side surface (33); in the height direction of the second sheet-like structure (50), the distance between a portion of the second surface (50b) close to the second tube body (20) and the central axis of the second tube body (20) is greater than or equal to the distance between a portion of the second inner side surface (23) close to the third tube body (30) and the central axis of the second tube body (20).

13. The sound-generating device (100) according to claim 12, characterized in that: The portion of the second surface (50b) close to the second tube (20) is flush with the portion of the third inner side surface (33) close to the second tube (20).

14. The sound-generating device (100) according to claim 12, characterized in that The portion of the third inner side surface (33) close to the second tube body (20) is flush with the portion of the second inner side surface (23) close to the third tube body (30).

15. The sound-generating device (100) according to any one of claims 11 to 14, characterized in that: The second tube body (20) has a fourth end surface (22a), the third tube body (30) has a fifth end surface (31a), and the fourth end surface (22a) is fixedly connected to the fifth end surface (31a); The fourth end face (22a) and the fifth end face (31a) are both annular, the area of ​​the region enclosed by the fourth end face (22a) is a fourth area, the area of ​​the region enclosed by the fifth end face (31a) is a fifth area, and the fifth area is greater than or equal to the fourth area.

16. The sound-generating device (100) according to any one of claims 11 to 14, characterized in that There are multiple second sheet-like structures (50), and the multiple second sheet-like structures (50) are spaced apart along the circumferential direction of the third tube body (30). A second gap (50a) is provided between two adjacent second sheet-like structures (50), and the width of the second gap (50a) decreases in a direction toward the central axis of the third tube body (30).

17. The sound-generating device (100) according to any one of claims 11 to 14, characterized in that The third tube body (30) has a fifth end face (31a) and a sixth end face (32a), the fifth end face (31a) is fixedly connected to the second tube body (20), and the sixth end face (32a) is arranged away from the second tube body (20); The fifth end face (31a) and the sixth end face (32a) are both annular, the area of ​​the region enclosed by the fifth end face (31a) is a fifth area, the area of ​​the region enclosed by the sixth end face (32a) is a sixth area, and the sixth area is larger than the fifth area.

18. The sound-generating device (100) according to claim 17, characterized in that There are multiple second sheet-like structures (50), and the multiple second sheet-like structures (50) are spaced apart along the circumferential direction of the third tube body (30). A second gap (50a) is provided between two adjacent second sheet-like structures (50), and the width of the second gap (50a) decreases along the direction from the sixth end face (32a) toward the fifth end face (31a).

19. The sound-generating device (100) according to claim 17, characterized in that The height of the second sheet-like structure (50) in the radial direction of the third tube (30) decreases in a direction from the sixth end surface (32a) toward the fifth end surface (31a).

20. The sound-generating device (100) according to claim 15, characterized in that The third tube body (30) further comprises a second mounting groove (30b), wherein the second mounting groove (30b) is formed on the fifth end surface (31a) of the third tube body (30), and at least a portion of the second tube body (20) is located in the second mounting groove (30b).

21. The sound-generating device (100) according to any one of claims 11 to 14, characterized in that The second sheet-like structure (50) and the third tube body (30) are integrally formed.

22. The sound-generating device (100) according to any one of claims 11 to 14, characterized in that The length of the first tube (10) is greater than the length of the third tube (30).

23. The sound-generating device (100) according to any one of claims 11 to 14, characterized in that The first tube body (10) has a first end surface, which is arranged away from the second tube body; the third tube body (30) has a sixth end surface (32a), which is arranged away from the second tube body (20); The first end face and the sixth end face are both annular, the area of ​​the region surrounded by the first end face (11a) is a first area, the area of ​​the region surrounded by the sixth end face (32a) is a sixth area, and the first area is larger than the sixth area.

24. The sound-generating device (100) according to any one of claims 1 to 3, characterized in that The length of the second tube (20) is greater than or equal to 50% of the total length of the pipeline (140).

25. The sound-generating device (100) according to any one of claims 1 to 3, characterized in that The shell (110) has a first mounting hole (111), the first mounting hole (111) connects the internal space (110a) of the shell (110) with the external space of the shell (110), the speaker (120) covers the first mounting hole (111) and isolates the first mounting hole (111) from the internal space (110a), and the speaker (120) emits sound to the external space of the shell (110) through the first mounting hole (111).

26. An electronic device, characterized in that: It comprises an equipment housing and a sound-generating device (100) according to any one of claims 1 to 25, wherein the sound-generating device (100) is installed in the equipment housing.

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