Electronic device

Abstract

The utility model discloses electronic equipment which comprises an equipment body, a loudspeaker module is arranged in the equipment body, and the loudspeaker module is provided with a first sound port; a sound guide channel is arranged in the equipment body, and a second sound opening is further formed in the equipment body; or the protective sleeve is detachably arranged outside the equipment body, a sound guide channel is defined by the protective sleeve and the equipment body, and the protective sleeve is provided with a second sound opening; the sound guide channel is communicated with the first sound opening and the second sound opening; the sound guide channel is provided with a first end part and a second end part, the first end part faces the first sound opening, the second end part faces the second sound opening, and the overflowing cross-sectional area of the second end part is larger than that of the first end part.

Description

Technical Field

[0001] This application belongs to the field of electronic equipment technology, and specifically relates to an electronic device. Background Technology

[0002] With the continuous development of communication technology, mobile smart hardware such as mobile phones has become an important carrier of human-computer interaction. In addition to meeting daily communication needs, users have increasingly higher demands for entertainment, games and other experiences, among which external amplification is one of the core requirements.

[0003] In related technologies, electronic devices include a speaker module with a first sound port, and the outer casing of the electronic device has a second sound port, with the first sound port directly connected to the second sound port. Due to the significant impedance gap between the speaker module's diaphragm and the surrounding air, the speaker module's efficiency is very low, resulting in a large amount of energy being consumed as heat, leading to energy waste and low volume. Utility Model Content

[0004] This application aims to provide an electronic device that solves one of the problems of low volume in related electronic devices.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] This application provides an electronic device, comprising: a device body, a speaker module disposed within the device body, the speaker module having a first sound port; a sound guiding channel disposed within the device body, and a second sound port also disposed on the device body; or a protective sleeve, detachably disposed outside the device body, the protective sleeve and the device body enclosing the sound guiding channel, the protective sleeve having a second sound port; the sound guiding channel connecting the first sound port and the second sound port; the sound guiding channel having a first end and a second end, the first end facing the first sound port, the second end facing the second sound port, and the flow cross-sectional area of ​​the second end being larger than the flow cross-sectional area of ​​the first end.

[0007] In embodiments of this application, the electronic device includes a device body, and a speaker module is provided within the device body. The speaker module is provided with a first sound port.

[0008] The device body has a sound guide channel, and the device body also has a second sound port. The first sound port and the second sound port are connected through the sound guide channel.

[0009] Alternatively, the electronic device may also include a protective case, which is detachably connected to the device body. The protective case and the device body enclose a sound guiding channel. The protective case has a second sound port, and the first and second sound ports are connected through the sound guiding channel. The protective case serves to protect the device body from scratches.

[0010] In other words, the first sound port of the speaker module is not directly connected to the second sound port. The sound waves generated by the speaker module are transmitted sequentially through the first sound port and the sound guide channel to the second sound port, and then through the second sound port to the outside of the electronic device.

[0011] By defining the structure of the sound guide channel, the cross-sectional area of ​​the flow path at the second end is made larger than that at the first end. This design allows the radiation impedance of the speaker module to transition through the sound guide channel to an acoustic impedance close to that of the ambient air, achieving an acoustic impedance that matches the speaker module. This overcomes the significant impedance difference between the speaker module and the ambient air, and the resulting acoustic impedance allows the speaker module's diaphragm to achieve impedance matching with the ambient air, amplifying the speaker module's volume within its operating frequency range. This improves the speaker module's efficiency, increases the external volume of electronic devices, and ultimately enhances the sound quality of the electronic devices.

[0012] In addition, when the protective case and the device body enclose the sound channel, the protective case and the device body work together to increase the external volume of the electronic device without taking up the internal space of the device body.

[0013] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the first part of the structure of an electronic device according to an embodiment of this application;

[0016] Figure 2 for Figure 1 A magnified view of part A of the electronic device shown;

[0017] Figure 3 This is a schematic diagram of the second part of the structure of an electronic device according to an embodiment of this application;

[0018] Figure 4 for Figure 3 A magnified view of part B of the electronic device shown;

[0019] Figure 5 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application;

[0020] Figure 6 This is a graph showing how the sound pressure level of the electronic device in this application and related technologies changes with frequency.

[0021] Figure label:

[0022] Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0023] 10 Electronic device, 100 Device body, 102 Third sound port, 110 Speaker module, 112 First sound port, 113 Speaker unit, 114 Front cavity, 115 Connecting cavity, 116 Sealing structure, 117 Rear cavity, 200 Sound guide channel, 220 First channel, 230 Second channel, 240 Groove, 250 First end, 260 Second end, 300 Protective cover, 310 Cover body, 320 Seal, 400 Second sound port, 500 Partition, 600 Sub-channel, 700 Connecting plate, 800 Slotted structure, 900 Opening, 1000 Microphone hole, 1100 Data connection port, 1200 Screen assembly, 1300 Battery cover. Detailed Implementation

[0024] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this application.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The following is in conjunction with the appendix Figures 1 to 6 This application describes the electronic device 10 provided in an embodiment.

[0029] like Figure 1 , Figure 2 and Figure 5 As shown, according to some embodiments of this application, an electronic device 10 is proposed, including: a device body 100, a speaker module 110 disposed within the device body 100, the speaker module 110 being provided with a first sound port 112; a sound guiding channel 200 disposed within the device body 100, and a second sound port 400 disposed on the device body 100; or a protective sleeve 300, detachably disposed outside the device body 100, the protective sleeve 300 and the device body 100 enclosing the sound guiding channel 200, the protective sleeve 300 being provided with a second sound port 400; the sound guiding channel 200 connecting the first sound port 112 and the second sound port 400; the sound guiding channel 200 having a first end 250 and a second end 260, the first end 250 facing the first sound port 112, the second end 260 facing the second sound port 400, and the flow cross-sectional area of ​​the second end 260 being greater than the flow cross-sectional area of ​​the first end 250.

[0030] In the embodiments of this application, the electronic device 10 includes a device body 100, and a speaker module 110 is provided in the device body 100. The speaker module 110 is provided with a first sound port 112.

[0031] The device body 100 is provided with a sound guide channel 200, and the device body 100 is also provided with a second sound port 400. The first sound port 112 and the second sound port 400 are connected through the sound guide channel 200.

[0032] Alternatively, the electronic device 10 may also include a protective cover 300, which is detachably connected to the device body 100. The protective cover 300 and the device body 100 enclose a sound guiding channel 200. The protective cover 300 is provided with a second sound port 400, and the first sound port 112 and the second sound port 400 are connected through the sound guiding channel 200. The protective cover 300 serves to protect the device body 100 from scratches.

[0033] In other words, the first sound port 112 of the speaker module 110 is not directly connected to the second sound port 400. The sound waves generated by the speaker module 110 are transmitted sequentially through the first sound port 112 and the sound guide channel 200 to the second sound port 400, and then through the second sound port 400 to the outside of the electronic device 10.

[0034] By defining the structure of the sound guide channel 200, the cross-sectional area of ​​the second end 260 is made larger than that of the first end 250. This configuration allows the radiation impedance of the speaker module 110 to transition through the sound guide channel 200 to an acoustic impedance close to that of the outside air, achieving an acoustic impedance that matches the speaker module 110. This overcomes the large impedance difference between the speaker module 110 and the outside air, and the resulting acoustic impedance allows the diaphragm of the speaker module 110 to be impedance-matched with the outside air, amplifying the volume of the speaker module 110 in the operating frequency band. This improves the efficiency of the speaker module 110, increases the external volume of the electronic device 10, and ultimately improves the sound quality of the electronic device 10.

[0035] Optionally, the electronic device 10 may be a mobile terminal such as a mobile phone, a wearable device, a tablet computer, a laptop computer, a mobile computer, an augmented reality device (also known as an AR (Augmented Reality) device), a virtual reality device (also known as a VR (Virtual Reality) device), and a handheld game console, etc.

[0036] It is understandable that when the sound guide channel 200 is cross-sectioned along the extension direction perpendicular to the sound guide channel 200, the area enclosed by the inner contour line of the first end 250 is the flow cross-sectional area of ​​the first end 250, and the area enclosed by the inner contour line of the second end 260 is the flow cross-sectional area of ​​the second end 260.

[0037] In some embodiments, such as Figure 3 As shown, the sound guiding channel 200 includes a first channel 220, which extends from the second end 260 toward the first end 250, and the first channel 220 and the first end 250 are arranged at intervals; along the direction from the first end 250 to the second end 260, the cross-sectional area of ​​the first channel 220 gradually increases.

[0038] In this embodiment, the structure of the sound guiding channel 200 is further defined such that the sound guiding channel 200 includes a first channel 220, which extends from the second end 260 toward the first end 250, and the first channel 220 and the first end 250 are spaced apart. Specifically, along the direction from the first end 250 to the second end 260, the cross-sectional area of ​​the first channel 220 gradually increases. That is, along the direction from the first end 250 to the second end 260, the cross-sectional area of ​​a portion of the sound guiding channel 200 (i.e., the first channel 220) gradually increases. In this way, the radiation impedance of the speaker module 110 can gradually transition to an acoustic impedance close to that of the ambient air through the first channel 220.

[0039] In some embodiments, such as Figure 3 As shown, a partition 500 is provided in the first channel 220. The partition 500 and the channel wall of the first channel 220 enclose a plurality of sub-channels 600. Each sub-channel 600 is connected to the first sound port 112 and the second sound port 400. The cross-sectional area of ​​the sub-channel 600 gradually increases along the direction from the first end 250 to the second end 260.

[0040] In this embodiment, the structure of the sound guiding channel 200 is further defined.

[0041] The first channel 220 is equipped with a partition 500, which, together with the channel wall of the first channel 220, encloses multiple sub-channels 600. That is, the partition 500 divides the internal space of the first channel 220 into multiple sub-channels 600.

[0042] Any one of the multiple sub-channels 600 is connected to the first sound port 112 and the second sound port 400.

[0043] In this design, the cross-sectional area of ​​the sub-channel 600 gradually increases along the direction from the first sound port 112 to the second sound port 400. This arrangement can meet the usage requirements of gradually transitioning the radiation impedance of the speaker module 110 to an acoustic impedance close to that of the outside air.

[0044] The sound wave propagates through the first sound port 112 to the sound guide channel 200, and is then discharged from the electronic device 10 by multiple sub-channels 600 with gradually increasing cross-sectional areas to achieve better sound wave impedance matching.

[0045] In some embodiments, such as Figure 3 As shown, there are multiple partitions 500, which are arranged at intervals along the first direction.

[0046] In this embodiment, the number and arrangement of the partitions 500 are further defined.

[0047] There are multiple partitions 500, and the multiple partitions 500 are arranged at intervals along the first direction.

[0048] When there are two partitions 500, the partitions 500 and the channel wall of the first channel 220 enclose three sub-channels 600. Each sub-channel 600 is connected to the first tone port 112 and the second tone port 400.

[0049] When there are three partitions 500, the partitions 500 and the channel wall of the first channel 220 enclose four sub-channels 600. Each sub-channel 600 is connected to the first tone port 112 and the second tone port 400.

[0050] In some embodiments, when the protective sleeve 300 and the device body 100 enclose the sound guiding channel 200, the partition 500 is connected to the inner surface of the protective sleeve 300.

[0051] In this embodiment, when the protective sleeve 300 and the device body 100 enclose the sound guiding channel 200, the partition 500 is connected to the inner surface of the protective sleeve 300. That is, the protective sleeve 300 serves as the mounting carrier for the partition 500, and has the function of installing and fixing the partition 500. When the protective sleeve 300 is fitted onto the device body 100, the protective sleeve 300, the partition 500, and the device body 100 enclose multiple sub-channels 600. When the protective sleeve 300 is separated from the device body 100, the partition 500 will not remain on the device body 100, thus ensuring the aesthetic appearance of the device body 100.

[0052] For example, the flow cross-sectional area of ​​the second sound port 400 is larger than that of the first sound port 112. A cross-section of the first sound port 112 is taken along a direction perpendicular to the first end 250 to the second end 260 of the sound guide channel 200. In this cross-section, the area enclosed by the inner contour line of the first sound port 112 is the flow cross-sectional area of ​​the first sound port 112. A cross-section of the second sound port 400 is taken along a direction perpendicular to the first end 250 to the second end 260 of the sound guide channel 200. In this cross-section, the area enclosed by the inner contour line of the second sound port 400 is the flow cross-sectional area of ​​the second sound port 400.

[0053] In some embodiments, the sound channel 200 is curved and extended.

[0054] In this embodiment, the structure of the sound guide channel 200 is further defined so that the sound guide channel 200 is curved and extended. This arrangement makes full use of the internal space of the device body 100 or the protective cover 300. In this way, the extension length of the sound guide channel 200 can be increased along the direction from the first sound port 112 to the second sound port 400, which can improve the impedance matching effect.

[0055] In some embodiments, the cross-sectional area of ​​the first channel 220 is S, the cross-sectional area of ​​the first sound port 112 is S0, the tortuosity index of the first channel 220 is δ, the extension length of the first channel 220 is x, and e is a natural constant, where S = S0 × e δ×x .

[0056] In this embodiment, the structure of the first channel 220 is further defined.

[0057] Wherein, the cross-sectional area of ​​the first channel 220 is denoted as S. The cross-sectional area of ​​the first sound port 112 is denoted as S0. The meandering index of the first channel 220 is denoted as δ. The extension length of the first channel 220 from the first sound port 112 to the second sound port 400 is denoted as x, and e is a natural constant. Wherein, the relationship between S, S0, x and δ satisfies: S=S0×e δ×x That is, along the direction from the first sound port 112 to the second sound port 400, the cross-sectional area of ​​the first channel 220 increases from small to large, and the cross-sectional area of ​​the first channel 220 changes according to a power function, which is beneficial to effectively increase the external volume of the electronic device 10.

[0058] In some other embodiments, the cross-sectional area of ​​the first channel 220 increases linearly along the direction from the first port 112 to the second port 400.

[0059] In some other embodiments, the cross-sectional area of ​​the first channel 220 increases in a hyperbolic manner along the direction from the first port 112 to the second port 400.

[0060] In some embodiments, such as Figure 3 and Figure 4 As shown, a connecting plate 700 is also provided inside the sound guiding channel 200. The connecting plate 700 and the channel wall of the sound guiding channel 200 enclose at least one groove-shaped structure 800 with an opening 900. The groove-shaped structure 800 extends in a spiral shape.

[0061] In this embodiment, the structure of the electronic device 10 is further defined. A connecting plate 700 is also provided within the sound guide channel 200. The connecting plate 700 and the channel wall of the sound guide channel 200 enclose at least one groove-shaped structure 800 with an opening 900, and the groove-shaped structure 800 extends in a spiral shape. It is understood that the groove-shaped structure 800 bends and extends to form a labyrinth structure. This arrangement allows for a gradual transition from the radiation impedance of the speaker module 110 to an acoustic impedance close to that of the outside air. The at least one groove-shaped structure 800, combined with the first channel 220, can enhance the external playback volume of the electronic device 10. Furthermore, the at least one groove-shaped structure 800 can adjust the sound wave mode generated by the sound guide channel 200, achieving impedance matching in the mid-to-low frequencies, enhancing the external playback effect of the electronic device 10, and optimizing the acoustic performance of the electronic device 10.

[0062] In some other embodiments, the cross-sectional area of ​​the sound guide channel 200 gradually increases from the first sound port 112 to the second sound port 400.

[0063] In some embodiments, such as Figure 3 As shown, the sound guide channel 200 also includes a second channel 230, which connects the first end 250 and the first channel 220. The connecting plate 700 is connected to the channel wall of the second channel 230.

[0064] In this embodiment, the position of the connecting plate 700 within the sound guide channel 200 is further defined. The sound guide channel 200 also includes a second channel 230, which connects the first end 250 and the first channel 220.

[0065] The connecting plate 700 is connected to the channel wall of the second channel 230, which defines the position of the connecting plate 700 within the sound guide channel 200. The connecting plate 700 is closer to the first sound port 112 than the second sound port 400. At least one groove-shaped structure 800 enclosed by the connecting plate 700 and the channel wall of the second channel 230 is closer to the first sound port 112 than the second sound port 400. The connecting plate 700 is located at the entrance end of the second channel 230.

[0066] This setting limits the propagation path of sound waves in at least one slot structure 800 and the first channel 220, achieving impedance matching and improving the external playback effect of the electronic device 10.

[0067] In some embodiments, such as Figure 3 As shown, a portion of the channel wall of the first channel 220 is recessed to form a groove 240, and the connecting plate 700 is connected to the groove wall of the groove 240.

[0068] In this embodiment, the position of the connecting plate 700 within the sound guide channel 200 is further defined.

[0069] A portion of the channel wall of the first channel 220 is recessed to form a groove 240, and the connecting plate 700 and the groove wall of the groove 240 enclose at least one groove-shaped structure 800 with an opening 900.

[0070] This setting defines the position of the connecting plate 700 within the sound guide channel 200, and defines the propagation path of the sound waves in at least one slotted structure 800 and the first channel 220, achieving impedance matching and improving the external playback effect of the electronic device 10.

[0071] In some embodiments, such as Figure 1 and Figure 2As shown, when the protective sleeve 300 and the device body 100 enclose the sound guiding channel 200, the device body 100 is also provided with a third sound port 102. The first sound port 112 and the sound guiding channel 200 are connected through the third sound port 102, and the third sound port 102 and the second sound port 400 are staggered.

[0072] In this embodiment, the mating structure of the protective sleeve 300 and the device body 100 is further defined. The device body 100 is also provided with a third sound port 102, which is connected to the first sound port 112 and the third sound port 102. The third sound port 102 is also connected to the sound guide channel 200; that is, the first sound port 112 and the sound guide channel 200 are connected through the third sound port 102. When the protective sleeve 300 is not fitted onto the device body 100, the third sound port 102 is exposed. When the protective sleeve 300 is fitted onto the device body 100, the third sound port 102 and the second sound port 400 are staggered. That is, the protective cover 300 will block the third sound port 102, and the second sound port 400 located on the protective cover 300 will not be opposite to the third sound port 102. In this way, the sound waves generated when the speaker module 110 is working will not be directly transmitted to the second sound port 400 through the third sound port 102. The sound waves will flow to the second sound port 400 through the sound guide channel 200, which can ensure the effectiveness and feasibility of overcoming the huge impedance difference between the speaker module 110 and the outside air.

[0073] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, when the protective sleeve 300 and the device body 100 enclose the sound guiding channel 200, the protective sleeve 300 includes: a sleeve body 310, which is detachably disposed outside the device body 100; and a sealing element 320, which is disposed on the side of the sleeve body 310 facing the device body 100 and abuts against the outer surface of the device body 100. The sleeve body 310, the sealing element 320 and the device body 100 enclose the sound guiding channel 200.

[0074] In this embodiment, the protective sleeve 300 includes a sleeve body 310 and a seal 320. The seal 320 is disposed on the side of the sleeve body 310 facing the device body 100.

[0075] The sleeve body 310 is detachably mounted outside the device body 100. The seal 320 can seal the connection between the sleeve body 310 and the device body 100, ensuring the internal sealing of the sound guide channel 200 and preventing sound waves from leaking out through the connection between the sleeve body 310 and the device body 100. It can effectively reduce the impedance difference between the speaker module 110 and the outside air.

[0076] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 andFigure 5 As shown, when the protective cover 300 and the device body 100 enclose the sound guiding channel 200, the battery cover 1300 of the device body 100 and the protective cover 300 enclose the sound guiding channel 200, and the side of the protective cover 300 is provided with a second sound port 400.

[0077] In this embodiment, the positions of the sound guide channel 200 and the second sound port 400 are further defined.

[0078] Specifically, the battery cover 1300 and the protective sleeve 300 of the device body 100 enclose the sound guiding channel 200, that is, the sound guiding channel 200 is located on the back of the device body 100. The second sound port 400 is located on the side of the protective sleeve 300.

[0079] For example, the first sound port 112 and the second sound port 400 are arranged in a staggered manner.

[0080] For example, such as Figure 1 and Figure 2 As shown, the speaker module 110 includes a first sound port 112, a speaker unit 113, a front cavity 114, a connecting cavity 115, a sealing structure 116, and a rear cavity 117. The sealing structure 116 is used to abut against the inner surface of the device body 100.

[0081] For example, such as Figure 1 and Figure 2 As shown, the device body 100 also includes a screen assembly 1200.

[0082] For example, such as Figure 5 As shown, the device body 100 also includes a microphone hole 1000 and a data connection port 1100, while the protective sleeve 300 has a first clearance opening and a second clearance opening. When the protective sleeve 300 is fitted onto the device body 100, the first clearance opening is positioned opposite the microphone hole 1000, and the second clearance opening is positioned opposite the data connection port 1100. That is, the microphone hole 1000 communicates with the outside world through the first clearance opening, and the data connection port 1100 communicates with the outside world through the second clearance opening.

[0083] For example, in this application, a speaker module 110 is provided inside the device body 100, and the speaker module 110 has a first sound port 112. A sound guide channel 200 is provided inside the device body 100, and a second sound port 400 is also provided on the device body 100. Alternatively, a protective sleeve 300 can be detachably disposed outside the device body 100, with the protective sleeve 300 and the device body 100 enclosing the sound guide channel 200, and the protective sleeve 300 having the second sound port 400. The sound guide channel 200 connects the first sound port 112 and the second sound port 400. A connecting plate 700 is also provided inside the sound guide channel 200, and the connecting plate 700 and the channel wall of the sound guide channel 200 enclose at least one groove-shaped structure 800 with an opening 900, the groove-shaped structure 800 extending in a spiral shape. This arrangement, through the sound guide channel 200 connecting the first sound port 112 and the second sound port 400 of the speaker module 110, achieves impedance matching between the speaker module 110 and the outside air. Specifically, the sound guide channel 200 includes a first channel 220, which extends from the second end 260 of the sound guide channel 200 toward the first end 250 of the sound guide channel 200. The first channel 220 and the first end 250 of the sound guide channel 200 are arranged at intervals. With the help of multiple labyrinth-shaped side pipes (i.e., at least one groove structure 800), the radiation impedance of the diaphragm of the speaker module 110 gradually transitions to an acoustic impedance close to that of the outside air, thereby enhancing the external sound output of the electronic device 10.

[0084] The sound guide channel 200 is connected to the first sound port 112, and the sound guide channel 200 is connected to the outside air through the second sound port 400 of the device body 100 or the second sound port 400 of the protective sleeve 300. After the speaker module 110 emits sound waves by vibrating the diaphragm up and down, the sound waves enter the impedance matching channel (i.e., the sound guide channel 200) through the first sound port 112. The impedance matching channel realizes impedance gradient and coupling, guiding these sound waves to propagate out from the side of the electronic device 10.

[0085] The entrance of the impedance matching channel (i.e., the first end 250 of the sound guide channel 200) is directly opposite the sound outlet (i.e., the first sound outlet 112) of the speaker module 110. The second sound outlet 400 is located on the side of the electronic device 10, and sound waves propagate out of the electronic device 10 through the second sound outlet 400. The sound guide channel 200 includes a first channel 220. From the first end 250 to the second end 260 of the sound guide channel 200, the cross-sectional area of ​​the first channel 220 increases exponentially or linearly to match the acoustic impedance with the speaker unit 113 of the speaker module 110, thereby creating a sound amplification effect.

[0086] This application makes full use of the internal space of the device body 100 or the space of the peripheral accessories (i.e., the protective cover 300), and by setting the first channel 220 and multiple labyrinth-shaped side channels, it can significantly improve the volume and mid-low frequency effect of the electronic device 10.

[0087] Taking the protective sleeve 300 and the device body 100 enclosing the sound guiding channel 200 as an example, the protective sleeve 300 is installed on the outer surface of the device body 100. The device body 100 is also provided with a third sound port 102, which is connected to the first sound port 112 of the speaker module 110. The first end 250 of the sound guiding channel 200 is aligned with the third sound port 102 of the device body 100, so that the sound emitted from the third sound port 102 is introduced into the first channel 220 and the labyrinth-shaped side channel formed in the protective sleeve 300, and the sound waves are exported from the electronic device 10 by the second sound port 400 on the side of the protective sleeve 300.

[0088] This application achieves this by rationally configuring the structure of the electronic device 10, so that the protective cover 300 blocks the third sound port 102 of the device body 100. The sound guiding channel 200 includes a first channel 220, and the cross-sectional area of ​​the first channel 220 gradually increases from the first end 250 to the second end 260. The cross-sectional area of ​​the first channel 220 increases exponentially or linearly to achieve acoustic impedance matching with the speaker module 110. The first channel 220 and the slot structure 800 cooperate to adjust the generated sound wave mode, thereby achieving impedance matching across the entire low-to-mid frequency band and amplifying the sound. The protective cover 300 can be used as a carrier to introduce the sound waves emitted from the third sound port 102 into the sound guiding channel 200 enclosed by the protective cover 300 and the battery cover 1300 of the device body 100. After passing through the sound guiding channel 200, the sound waves propagate to the external environment from the side of the protective cover 300. After the sound waves achieve impedance matching through the sound guide channel 200, they can enhance the external playback effect in the low-frequency range and optimize the acoustic performance of the electronic device 10. The protective cover 300 works in conjunction with the device body 100 to increase the external playback volume of the electronic device 10 without occupying the internal space of the device body 100.

[0089] For example, such as Figure 1 and Figure 2As shown, the sound waves emitted by the speaker unit 113 are propagated to the outside of the electronic device 10 via the front cavity 114, the connecting cavity 115, the first sound port 112, the sound guide channel 200, and the second sound port 400. The protective cover 300 is fitted onto the device body 100, and the protective cover 300 blocks the third sound port 102 of the device body 100. The second sound port 400 on the protective cover 300 is misaligned with the third sound port 102 and forms a sealed space (i.e., the second channel 230), which introduces the sound emitted by the third sound port 102 into the sound guide channel 200 between the protective cover 300 and the back of the device body 100.

[0090] The protective sleeve 300 includes a sleeve body 310 and a seal 320. The sleeve body 310 is detachably disposed outside the equipment body 100, and the seal 320 is disposed on the inner surface of the sleeve body 310 to achieve a sealed contact between the equipment body 100 and the protective sleeve 300. For example, the seal 320 may include plastic parts or foam parts, etc., which will not be listed here.

[0091] For example, the cross-sectional area of ​​the second sound port 400 of the protective sleeve 300 is larger than the cross-sectional area of ​​the third sound port 102 of the device body 100, thereby increasing the sound output area.

[0092] like Figure 3 As shown, sound waves are introduced into the sound-guiding channel 200 enclosed by the battery cover 1300, the sleeve body 310, and the seal 320 of the device body 100 through a sealed space. Along the direction of the first sound port 112 and the second sound port 400, the cross-sectional area of ​​the sound-guiding channel 200 increases from small to large, and the cross-sectional area of ​​the sound-guiding channel 200 varies according to a power function. For example, the cross-sectional area of ​​the first channel 220 is S, the cross-sectional area of ​​the first sound port 112 is S0, the tortuosity index of the first channel 220 is δ, and the extension length of the first channel 220 is x, where S = S0 × e δ×x .

[0093] In some other embodiments, the cross-sectional area of ​​the sound guide channel 200 increases linearly along the direction from the first sound port 112 to the second sound port 400.

[0094] In some other embodiments, the cross-sectional area of ​​the sound guide channel 200 increases in a hyperbolic manner along the direction from the first sound port 112 to the second sound port 400.

[0095] For example, the sound guide channel 200 is curved and extended to lengthen it, which helps to increase the cross-sectional area of ​​the second end 260 of the sound guide channel 200. The sound guide channel 200 includes a first channel 220, in which a partition 500 is provided. The partition 500 and the channel wall of the first channel 220 enclose a plurality of sub-channels 600. Each sub-channel 600 connects to the first sound port 112 and the second sound port 400. Along the direction from the first sound port 112 to the second sound port 400, the cross-sectional area of ​​the sub-channel 600 gradually increases, which can achieve better impedance matching.

[0096] The sound-guiding channel 200 enclosed by the protective sleeve 300 and the device body 100 is acoustically impedance matched with the speaker module 110 inside the device body 100, achieving better impedance matching between the speaker module 110 and the outside air, thereby amplifying the volume within the operating frequency band. For example... Figure 6 As shown, compared with the related technologies that do not have the electronic device 10 of this application, the mid-low frequency of the electronic device 10 of this application is greatly improved and the high frequency resonance peak is suppressed. This not only improves the loudness of the mid-low frequency, but also facilitates back-end tuning and achieves better sound quality.

[0097] For example, the sound guide channel 200 is a metamaterial structure, which helps the speaker module 110 overcome the huge impedance difference between itself and the outside air. The acoustic impedance generated by it can achieve effective impedance matching between the speaker module 110 and the outside air, thereby achieving the purpose of increasing the external volume and improving the sound quality.

[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0099] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising: The device comprises: a device body, a speaker module is arranged in the device body, and the speaker module is provided with a first sound port; a sound guide channel is arranged in the device body, and a second sound port is further arranged on the device body; or a protective sleeve is detachably arranged outside the device body, the protective sleeve and the device body enclose the sound guide channel, and the protective sleeve is provided with the second sound port; the sound guide channel is connected with the first sound port and the second sound port; the sound guide channel has a first end portion and a second end portion, the first end portion faces the first sound port, the second end portion faces the second sound port, and the flow cross-sectional area of the second end portion is greater than that of the first end portion.

2. The electronic device of claim 1, wherein, The sound guide channel comprises a first channel, the first channel extends from the second end portion to the first end portion, and the first channel is arranged in a spaced manner with the first end portion; in the direction from the first end portion to the second end portion, the flow cross-sectional area of the first channel gradually increases.

3. The electronic device of claim 2, wherein, a partition is arranged in the first channel, the partition and the channel wall of the first channel enclose a plurality of sub-channels, and each sub-channel is connected with the first sound port and the second sound port; in the direction from the first end portion to the second end portion, the flow cross-sectional area of the sub-channel gradually increases.

4. The electronic device of claim 3, wherein, The number of the partitions is multiple, and the multiple partitions are arranged in a spaced manner along a first direction.

5. The electronic device of claim 3, wherein, When the protective sleeve and the device body enclose the sound guide channel, the partitions are connected with the inner surface of the protective sleeve.

6. The electronic device of any of claims 2-5, wherein, The sound guide channel extends in a curved manner.

7. The electronic device of claim 6, wherein, The first channel has a flow cross-sectional area S, the first sound hole has a flow cross-sectional area S0, the first channel has a meandering index δ, the first channel has an extension length x, and e is a natural constant, wherein S=S0×e δ×x .

8. The electronic device of any of claims 2-5, wherein, A connecting plate is further arranged in the sound guide channel, the connecting plate and the channel wall of the sound guide channel enclose at least one slot structure with an opening, and the slot structure extends in a spiral manner.

9. The electronic device of claim 8, wherein, The sound guide channel further comprises a second channel, the second channel connects the first end portion and the first channel, and the connecting plate is connected with the channel wall of the second channel.

10. The electronic device of claim 8, wherein, A part of the channel wall of the first channel is recessed to form a groove, and the connecting plate is connected with the groove wall.

11. The electronic device of any of claims 1-5, wherein, When the protective sleeve and the device body enclose the sound guide channel, a third sound port is further arranged on the device body, the first sound port and the sound guide channel are connected through the third sound port, and the third sound port and the second sound port are arranged in a staggered manner.

12. The electronic device of any of claims 1-5, wherein, When the protective sleeve and the device body enclose the sound guide channel, the protective sleeve comprises: a sleeve body, which is detachably arranged outside the device body; a sealing element, which is arranged on the side of the sleeve body facing the device body, and abuts against the outer surface of the device body, and the sleeve body, the sealing element and the device body enclose the sound guide channel.

13. The electronic device of any of claims 1-5, wherein, When the protective sleeve and the device body enclose the sound guide channel, the battery cover of the device body and the protective sleeve enclose the sound guide channel, and the side portion of the protective sleeve is provided with the second sound port.

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