Electronic device

Abstract

The utility model discloses electronic equipment, and belongs to the technical field of electronics. The electronic equipment is provided with a containing cavity and comprises a loudspeaker, a loudspeaker shell and an air throttle which are installed in the containing cavity. The loudspeaker is located in the loudspeaker shell, the loudspeaker shell is provided with an exhaust hole, and the exhaust hole is communicated with the interior of the loudspeaker. One end of the air throttle is communicated with the containing cavity, the other end of the air throttle is communicated with the exhaust hole, and the air throttle is configured to prevent air from flowing between the containing cavity and the loudspeaker shell when the pressure difference between the air pressure in the containing cavity and the air pressure in the loudspeaker shell exceeds the preset pressure difference within the preset time. By adopting the technical scheme of the invention, normal use of the loudspeaker can be ensured, and the electronic equipment can be lightened and thinned.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and in particular to an electronic device. Background Technology

[0002] Loudspeakers, as sound transmission devices, are typically installed inside electronic devices such as mobile phones and tablets. Loudspeakers primarily produce sound through the interaction between an electric current and a magnetic field. This interaction causes the voice coil inside the speaker to move within the magnetic field, cutting through magnetic lines of force. The diaphragm within the speaker then vibrates under the influence of the voice coil, producing sound. However, when the air pressure inside the speaker cavity changes abruptly, such as when a user presses the back cover of an electronic device, the speaker is prone to abnormal overload of the diaphragm's amplitude. This can lead to the speaker colliding with surrounding components, causing noise or even direct damage.

[0003] In related technologies, to avoid collisions between the speaker and surrounding components, the height of the speaker housing is typically increased to allow for greater longitudinal vibration space. However, this increases the size of the internal stacking space of the electronic device, hindering the achievement of a thinner and lighter design. Utility Model Content

[0004] In view of this, embodiments of this application provide an electronic device that not only ensures the normal use of the speaker, but also facilitates the thinning and lightening of the electronic device.

[0005] In a first aspect, embodiments of this application provide an electronic device having a receiving cavity, the electronic device including a speaker, a speaker housing, and a throttle valve installed within the receiving cavity;

[0006] The loudspeaker is located inside the loudspeaker housing, and the loudspeaker housing has an exhaust port that communicates with the interior of the loudspeaker.

[0007] One end of the throttle valve is connected to the receiving cavity, and the other end is connected to the exhaust port. The throttle valve is configured to prevent gas from flowing between the receiving cavity and the speaker housing when the pressure difference between the gas pressure in the receiving cavity and the gas pressure in the speaker housing exceeds the preset pressure difference within a preset time.

[0008] Optionally, the throttle valve includes an air guide tube and a sealing element;

[0009] The first end of the air guide tube is connected to the receiving cavity, and the second end is connected to the exhaust port;

[0010] The sealing element is rotatably disposed inside the air duct. Within a preset time, when the air pressure in the receiving cavity is greater than the air pressure in the speaker housing and the pressure difference exceeds a preset pressure difference, the sealing element is rotated by the airflow force to seal the air duct, thereby preventing gas from flowing between the two ends of the air duct.

[0011] Optionally, an expansion portion is provided between the first end and the second end of the air guide tube, and one end of the sealing member is connected to the inner wall of the air guide tube, while the other end extends into the expansion portion;

[0012] Specifically, when the air pressure inside the accommodating cavity is less than the air pressure inside the speaker housing, the sealing member is pushed towards the first end of the air duct to block the first opening; when the air pressure inside the accommodating cavity is greater than the air pressure inside the speaker housing, the sealing member moves towards the second end of the air duct to block the second opening; when the air pressure inside the accommodating cavity is balanced with the air pressure inside the speaker housing, the sealing member is neutral, allowing the first opening and the second opening to communicate, wherein the first end of the air duct communicates with the expansion portion through the first opening, and the second end of the air duct communicates with the expansion portion through the second opening.

[0013] Optionally, the electronic device further includes a controller and a flow sensor;

[0014] The flow sensor is located inside the receiving cavity;

[0015] The controller is connected to the flow sensor and the blocking device respectively.

[0016] Optionally, the enlarged portion is provided with a first baffle, one end of the first baffle is connected to the side of the enlarged portion near the second end of the air guide tube, and the other end extends toward the sealing member and forms the second opening with the sealing member;

[0017] When the sealing member blocks the second opening, a portion of the sealing member abuts against the surface of the second end of the first baffle that is away from the air duct.

[0018] Optionally, the enlarged portion is further provided with a second baffle, the first baffle and the second baffle are arranged opposite to each other, one end of the second baffle is connected to the side of the enlarged portion near the first end of the air guide tube, and the other end extends toward the sealing member and forms the first opening with the sealing member;

[0019] When the sealing member blocks the first opening, a portion of the sealing member abuts against the surface of the second baffle that is away from the first end of the air duct.

[0020] Optionally, the surface of the first baffle away from the second end of the air duct and the surface of the second baffle away from the first end of the air duct are both inclined surfaces.

[0021] Optionally, the throttle valve further includes a support member, which is installed inside the air duct and rotatably connected to the sealing member.

[0022] Optionally, the speaker housing includes a first part and a second part connected together;

[0023] The first part and the speaker form a first acoustic cavity, the first acoustic cavity having a sound guide hole that communicates with the outside of the electronic device;

[0024] The second part forms a second acoustic cavity with the loudspeaker, the first acoustic cavity and the second acoustic cavity are separated from each other, and the second acoustic cavity is provided with the exhaust hole.

[0025] Optionally, the loudspeaker includes a magnetic sheet with a pressure relief hole, and the interior of the loudspeaker communicates with the second acoustic cavity through the pressure relief hole.

[0026] Optionally, the receiving cavity has a vent hole that connects the outside of the electronic device and the receiving cavity, and the vent hole is covered with a waterproof and breathable membrane.

[0027] Optionally, the electronic device further includes a screen, a mid-frame, and a back cover, the screen, the mid-frame, and the back cover forming the receiving cavity.

[0028] The electronic device provided in this application embodiment has a receiving cavity, and includes a speaker, a speaker housing, and a throttle valve installed within the receiving cavity. The speaker is located inside the speaker housing, and the speaker housing has an exhaust port communicating with the interior of the speaker. The receiving cavity, the throttle valve, and the exhaust port are sequentially connected. Because, within a preset time, when the pressure difference between the air pressure inside the receiving cavity and the air pressure inside the speaker housing exceeds a preset pressure difference, the throttle valve can prevent gas from flowing between the receiving cavity and the speaker housing. Thus, gas can no longer flow between the receiving cavity and the speaker, thereby preventing abnormal overload of the speaker's diaphragm amplitude. This, in turn, prevents the speaker from generating noise or being damaged due to collisions with surrounding components, ensuring the speaker can be used normally. Simultaneously, since there is no need to reserve excessive vibration space for the speaker, the speaker will not occupy a large stacking space within the electronic device. In other words, the electronic device provided in this application embodiment not only ensures the normal use of the speaker but also facilitates the thinning and lightening of the electronic device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a sealing component in an electronic device when it is in a neutral position, as provided in an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of a sealing component blocking a second opening in an electronic device, as provided in an embodiment of this application.

[0032] Figure 3 This is a schematic diagram and a partial enlarged view of a sealing component blocking a second opening in an electronic device, as provided in an embodiment of this application.

[0033] Figure 4 This is a schematic diagram and a partial enlarged view of a sealing component blocking a first opening in an electronic device, as provided in an embodiment of this application.

[0034] Figure 5 This is a schematic diagram of the connection of a portion of the structure in an electronic device provided in an embodiment of this application;

[0035] Figure 6 This is a schematic diagram of the structure of a speaker in an electronic device provided in an embodiment of this application.

[0036] The labels in the attached diagram are as follows:

[0037] 100. Receiving cavity; 110. Ventilation hole; 111. Waterproof and breathable membrane;

[0038] 200, loudspeaker; 210, magnetic sheet; 220, diaphragm; 230, first magnet; 240, second magnet; 250, third magnet; 260, voice coil; 270, bracket; 280, first magnetic circuit gap; 290, second magnetic circuit gap; 211, pressure relief hole;

[0039] 300, Speaker housing; 310, Vent; 320, First part; 330, Second part; 340, First sound cavity; 350, Second sound cavity; 341, Sound guide hole;

[0040] 400, Throttle valve; 410, Air duct; 420, Sealing component; 430, First opening; 440, Second opening; 450, First baffle; 460, Second baffle; 470, Support component; 411, Expansion section;

[0041] 500, Controller;

[0042] 600. Flow sensor;

[0043] 700, screen;

[0044] 800, mid-frame;

[0045] 900, back cover.

[0046] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

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

[0048] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art.

[0049] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0050] Combination Figure 1 As shown, this application embodiment provides an electronic device having a receiving cavity 100. The electronic device includes a speaker 200, a speaker housing 300, and a throttle valve 400 installed within the receiving cavity 100. It is understood that the speaker 200 generally includes a diaphragm 220, and the speaker 200 can emit sound when the diaphragm 220 vibrates.

[0051] The speaker 200 is located inside the speaker housing 300, which has an exhaust port 310 that communicates with the interior of the speaker 200. One end of the throttle valve 400 is connected to the receiving cavity 100, and the other end is connected to the exhaust port 310. The throttle valve 400 is configured to prevent gas from flowing between the receiving cavity 100 and the speaker housing 300 when the pressure difference between the air pressure in the receiving cavity 100 and the air pressure in the speaker housing 300 exceeds a preset pressure difference within a preset time. It should be noted that the preset time in this embodiment is relatively short, for example, it can be 0.1 seconds, 0.2 seconds, 0.5 seconds, 1 second, etc. This embodiment does not limit the specific value of the preset time. It is understandable that, within a preset time, when the pressure difference between the air pressure inside the accommodating cavity 100 and the air pressure inside the speaker housing 300 exceeds a preset pressure difference, the amplitude of the diaphragm 220 of the speaker 200 inside the speaker housing 300 can be prevented from being abnormally overloaded due to the large pressure difference. This, in turn, prevents the speaker 200 from generating noise or being damaged due to collisions with surrounding components, ensuring that the speaker 200 can be used normally. Simultaneously, since there is no need to reserve excessive vibration space for the speaker 200 within the electronic device, the speaker 200 will not occupy a large stacking space within the electronic device, thus allowing for a thinner electronic device. In other words, the electronic device provided in this application embodiment not only ensures the normal use of the speaker 200 but also facilitates the thinning of the electronic device.

[0052] The following is in conjunction with the appendix Figures 1 to 6 The various components and functions of the electronic device provided in the embodiments of this application will be described in more detail.

[0053] like Figure 2 As shown, in some embodiments, the throttle valve 400 includes an air guide tube 410 and a sealing member 420. A first end of the air guide tube 410 communicates with a receiving cavity 100, and a second end communicates with an exhaust port 310. The sealing member 420 is rotatably disposed within the air guide tube 410. Within a preset time, when the air pressure within the receiving cavity 100 is greater than the air pressure within the speaker housing 300 and the pressure difference exceeds a preset pressure difference, the sealing member 420 is rotated by the airflow force to seal the air guide tube 410, thereby preventing gas from flowing between the two ends of the air guide tube 410. Understandably, by setting a rotatable sealing component 420, when the pressure difference between the air pressure in the receiving cavity 100 and the air pressure in the speaker housing 300 exceeds a preset pressure difference within a preset time, the gas flow in the receiving cavity 100 and the speaker housing 300 can be controlled more flexibly. This can prevent the diaphragm 220 of the speaker 200 from being abnormally overloaded due to changes in air pressure, and thus prevent the speaker 200 from colliding with or being damaged by surrounding components due to excessive vibration amplitude, ensuring that the speaker 200 can be used normally.

[0054] Combination Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, an expansion portion 411 is provided between the first and second ends of the air duct 410, and one end of the sealing member 420 is connected to the inner wall of the air duct 410, while the other end extends into the expansion portion 411. With this configuration, the sealing member 420 can rotate freely within the expansion portion 411 under the thrust of the airflow.

[0055] When the air pressure inside the accommodating cavity 100 is lower than the air pressure inside the speaker housing 300, the sealing member 420 is pushed to the first end of the vent tube 410 to block the first opening 430, thereby preventing the rapid flow of gas from the speaker housing 300 into the accommodating cavity 100, and thus preventing the diaphragm 220 in the speaker 200, which is connected to the speaker housing 300, from being overloaded by the change in air pressure. When the air pressure inside the accommodating cavity 100 is higher than the air pressure inside the speaker housing 300, the sealing member 420 moves towards the second end of the vent tube 410 to block the second opening 440, thereby preventing the rapid flow of gas from the accommodating cavity 100 into the speaker housing 300, and thus preventing the diaphragm 220 in the speaker 200, which is connected to the speaker housing 300, from being overloaded by the change in air pressure. When the air pressure inside the receiving cavity 100 is balanced with the air pressure inside the speaker housing 300, the sealing member 420 is neutral, connecting the first opening 430 and the second opening 440. The first end of the air duct 410 is connected to the expansion portion 411 through the first opening 430, and the second end of the air duct 410 is connected to the expansion portion 411 through the second opening 440. It is understood that because the sealing member 420 can flexibly seal or open the first opening 430 / second opening 440, it can more promptly prevent the diaphragm 220 of the speaker 200 from being abnormally overloaded due to large pressure differences in a short period, thus preventing the speaker 200 from colliding with surrounding components and preventing noise or damage to the speaker 200. It should be noted that the sealing member 420 can be made of elastic materials such as rubber.

[0056] Combination Figure 5As shown, in some embodiments, the electronic device further includes a controller 500 and a flow sensor 600. The flow sensor 600 is located within the receiving cavity 100. The controller 500 is signal-connected to both the flow sensor 600 and the sealing element 420. It should be noted that the sealing element 420 can be made of piezoelectric material. The flow sensor 600 can be installed within the receiving cavity 100 to monitor the flow direction and flow rate of the gas within the receiving cavity 100. If, within a short period, the flow sensor 600 detects a flow direction from the receiving cavity 100 to the speaker housing 300 and the flow rate exceeds a preset flow rate, it indicates a sudden increase in the air pressure within the receiving cavity 100 relative to the air pressure within the speaker housing 300. At this time, the controller 500 can control the sealing element 420 to rotate to the position of sealing the second opening 440. If, within a short period, the flow sensor 600 detects a flow direction from the speaker housing 300 to the receiving cavity 100 and the flow rate exceeds a preset flow rate, it indicates a sudden decrease in the air pressure within the receiving cavity 100 relative to the air pressure within the speaker housing 300. At this time, the controller 500 can control the sealing member 420 to rotate to the position of sealing the first opening 430. This allows the flow rate and direction of the gas in the receiving cavity 100 to be automatically blocked, preventing the gas from flowing between the receiving cavity 100 and the speaker housing 300, so as to avoid the diaphragm 220 in the speaker 200 from being overloaded due to the large pressure difference.

[0057] like Figure 3 and Figure 4 As shown, in some embodiments, a first baffle 450 is provided inside the enlarged portion 411. One end of the first baffle 450 is connected to the side of the enlarged portion 411 near the second end of the air guide tube 410, and the other end extends toward the sealing member 420, forming a second opening 440 between the sealing member 420 and the sealing member 420. When the sealing member 420 blocks the second opening 440, a portion of the sealing member 420 abuts against the surface of the first baffle 450 opposite to the second end of the air guide tube 410. It should be noted that because the sealing member 420 can abut against the surface of the first baffle 450, the sealing effect of the sealing member 420 on the second opening 440 can be improved when the sealing member 420 blocks the second opening 440.

[0058] like Figure 3 and Figure 4As shown, in some embodiments, a second baffle 460 is further provided inside the enlarged portion 411. The first baffle 450 and the second baffle 460 are disposed opposite each other. One end of the second baffle 460 is connected to the side of the enlarged portion 411 near the first end of the air guide tube 410, and the other end extends toward the sealing member 420, forming a first opening 430 between them. When the sealing member 420 blocks the first opening 430, a portion of the sealing member 420 abuts against the surface of the second baffle 460 away from the first end of the air guide tube 410. It should be noted that since the sealing member 420 can abut against the surface of the second baffle 460, when the sealing member 420 completely seals the first opening 430, the sealing effect of the sealing member 420 on the first opening 430 can be improved.

[0059] like Figure 3 and Figure 4 As shown, in some embodiments, the surface of the first baffle 450 facing away from the second end of the air guide pipe 410 and the surface of the second baffle 460 facing away from the first end of the air guide pipe 410 are both inclined surfaces. It should be noted that the thrust exerted by the gas on the sealing member 420 due to the pressure difference is limited. Therefore, by providing inclined surfaces, the rotational stroke of the sealing member 420 can be reduced. Thus, even if the thrust exerted by the gas on the sealing member 420 is small, it can be ensured that the sealing member 420 can quickly abut against the inclined surface of the first baffle 450 or the inclined surface of the second baffle 460, thereby timely sealing the first opening 430 or the second opening 440. That is, the effectiveness of the sealing by the sealing member 420 can be ensured.

[0060] like Figure 3 As shown, in some embodiments, the throttle valve 400 further includes a support member 470, which is installed inside the air duct 410 and rotatably connected to the sealing member 420. It should be noted that the support member 470 can provide a certain supporting force to the sealing member 420. The support member 470 can be fixed to the inner wall of the air duct 410 and hinged together with the sealing members 420.

[0061] like Figure 1 As shown, in some embodiments, the speaker housing 300 includes a first portion 320 and a second portion 330 connected together. A first acoustic cavity 340 is formed between the first portion 320 and the speaker 200, and the first acoustic cavity 340 has a sound guide hole 341 communicating with the outside of the electronic device. A second acoustic cavity 350 is formed between the second portion 330 and the speaker 200, and the first acoustic cavity 340 and the second acoustic cavity 350 are separated from each other. The second acoustic cavity 350 is provided with an exhaust port 310. Figure 1As shown, in some embodiments, the receiving cavity 100 has a vent 110, which connects the outside of the electronic device and the receiving cavity 100. The vent 110 is covered with a waterproof and breathable membrane 111. It is understood that the air pressure inside the first acoustic cavity 340 is generally consistent with the external atmospheric pressure of the electronic device. Since the receiving cavity 100 is connected to the outside of the electronic device through the vent 110, the air pressure inside the receiving cavity 100 is also generally consistent with the external atmospheric pressure of the electronic device. Furthermore, the second acoustic cavity 350 is connected to the receiving cavity 100 sequentially through an exhaust port 310 and a vent pipe 410. Therefore, the air pressure inside the second acoustic cavity 350 is also generally consistent with the external atmospheric pressure, that is, consistent with the air pressure inside the first acoustic cavity 340, thus allowing the speaker 200 to operate normally. The waterproof and breathable membrane 111 prevents external liquids from flowing into the electronic device. It should be noted that the flow sensor 600 can be installed near the vent 110, thereby allowing for more accurate measurement of the flow direction and flow rate of the gas within the containment cavity 100.

[0062] like Figure 1 As shown, in some embodiments, the speaker 200 includes a magnetic sheet 210 with a pressure relief hole 211. The interior of the speaker 200 is connected to the second acoustic cavity 350 through the pressure relief hole 211. It should be noted that when the speaker 200 is in operation, it generates a certain amount of heat. The pressure relief hole 211 can promptly dissipate the heat inside the speaker 200, preventing the speaker 200 from being affected by excessive internal pressure.

[0063] like Figure 6 As shown, in some embodiments, the loudspeaker 200 further includes a first magnet 230, a second magnet 240, a third magnet 250, a voice coil 260, and a support 270. The second magnet 240 is located between the first magnet 230 and the third magnet 250, forming a first magnetic circuit gap 280 between the second magnet 240 and the first magnet 230, and a second magnetic circuit gap 290 between the second magnet 240 and the third magnet 250. The voice coil 260 is mounted on the side of the diaphragm 220 facing the guide magnet 210, with both sides of the voice coil 260 located within the first magnetic circuit gap 280 and the second magnetic circuit gap 290, respectively. One end of the support 270 is connected to one end of the first magnet 230 and one end of the diaphragm 220, and the other end is connected to the third magnet 250 and the other end of the diaphragm 220, respectively, to support the diaphragm 220. It is understood that when the voice coil 260 is energized, the diaphragm can be subjected to force and vibrate, thereby enabling the loudspeaker to produce sound. It should be noted that the speaker 200 may also include other components for generating sound, but this application embodiment does not limit this.

[0064] like Figure 1As shown, in some embodiments, the electronic device further includes a screen 700, a mid-frame 800, and a back cover 900, which together form a receiving cavity 100. It should be noted that the screen 700 and the back cover 900 are generally positioned opposite each other, and the back cover 900 can be, for example, a battery cover for the electronic device. The aforementioned vent 110 can be provided on the mid-frame 800. When the back cover 900 is suddenly subjected to pressure towards the screen 700, for example, when a user suddenly presses the back cover 900, the volume of the receiving cavity 100 suddenly decreases, thereby causing a sudden increase in air pressure within the receiving cavity 100. At this time, the sealing member 420 will... Figure 1 Rotate to the neutral position shown Figure 3 The position of the second opening 440 shown is used to block the flow of gas between the receiving cavity 100 and the speaker housing 300, thereby preventing the diaphragm 220 in the speaker 200 inside the speaker housing 300 from being overloaded by a sudden increase in air pressure. When the user releases the pressure on the back cover 900, the back cover 900 can return to its initial state due to its elasticity. During the process of the back cover 900 returning from the pressed state to the initial state, the volume of the receiving cavity 100 will suddenly increase, which will cause a sudden drop in air pressure inside the receiving cavity 100. At this time, the sealing member 420 will... Figure 3 The position of blocking the second opening 440 shown is rotated to Figure 4 The position shown is where the first opening 430 is blocked. As the air pressure inside the receiving cavity 100 gradually returns to the state of air pressure equilibrium inside the speaker housing 300, the sealing member 420 gradually returns from the position blocking the first opening 430 to... Figure 1 In the neutral position shown, the gas can continue to flow between the receiving cavity 100 and the speaker housing 300. It should be noted that there are many situations in which the pressure difference between the receiving cavity 100 and the speaker housing 300 exceeds the preset pressure difference; the above is only one example of a situation where the pressure difference exceeds the preset pressure difference.

[0065] In summary, the electronic device provided in this application embodiment, by installing a throttle valve 400, can prevent the diaphragm 220 of the speaker 200 from experiencing amplitude overload when the air pressure in the receiving cavity 100 changes significantly in a short period of time. This avoids collisions between the speaker 200 and surrounding components, thereby preventing noise or damage to the speaker 200. Simultaneously, since there is no need to reserve excessive vibration space for the speaker 200 within the electronic device, the speaker 200 does not occupy a large stacking space within the electronic device. Consequently, the speaker housing 300 used to house the speaker 200 also does not occupy a large stacking space, allowing for a thinner electronic device. In other words, the electronic device provided in this application embodiment not only ensures the normal operation of the speaker 200 but also contributes to the thinner and lighter design of the electronic device.

[0066] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0067] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0068] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An electronic device, characterized in that, The electronic device has a receiving cavity (100), and the electronic device includes a speaker (200), a speaker housing (300), and a throttle valve (400) installed in the receiving cavity (100); The loudspeaker (200) is located inside the loudspeaker housing (300), and the loudspeaker housing (300) has an exhaust port (310) that communicates with the interior of the loudspeaker (200). One end of the throttle valve (400) is connected to the receiving cavity (100), and the other end is connected to the exhaust port (310). The throttle valve (400) is configured to prevent gas from flowing between the receiving cavity (100) and the speaker housing (300) when the pressure difference between the air pressure in the receiving cavity (100) and the air pressure in the speaker housing (300) exceeds the preset pressure difference within a preset time.

2. The electronic device according to claim 1, characterized in that, The throttle valve (400) includes an air guide tube (410) and a sealing element (420); The first end of the air guide tube (410) is connected to the receiving cavity (100), and the second end is connected to the exhaust port (310); The sealing member (420) is rotatably disposed in the air duct (410). During a preset time, when the air pressure in the receiving cavity (100) is greater than the air pressure in the speaker housing (300) and the pressure difference exceeds the preset pressure difference, the sealing member (420) is rotated by the airflow force to seal the air duct (410) to prevent gas from flowing between the two ends of the air duct (410).

3. The electronic device according to claim 2, characterized in that, An expansion portion (411) is provided between the first end and the second end of the air guide tube (410). One end of the sealing member (420) is connected to the inner wall of the air guide tube (410), and the other end extends into the expansion portion (411). When the air pressure in the receiving cavity (100) is less than the air pressure in the speaker housing (300), the sealing member (420) is pushed toward the first end of the air duct (410) to block the first opening (430); when the air pressure in the receiving cavity (100) is greater than the air pressure in the speaker housing (300), the sealing member (420) moves toward the second end of the air duct (410) to block the second opening (440); when the air pressure in the receiving cavity (100) is balanced with the air pressure in the speaker housing (300), the sealing member (420) is neutral and the first opening (430) and the second opening (440) are connected, wherein the first end of the air duct (410) is connected to the expansion portion (411) through the first opening (430), and the second end of the air duct (410) is connected to the expansion portion (411) through the second opening (440).

4. The electronic device according to claim 3, characterized in that, The electronic device also includes a controller (500) and a flow sensor (600); The flow sensor (600) is located inside the receiving cavity (100); The controller (500) is connected to the flow sensor (600) and the plug (420) respectively.

5. The electronic device according to claim 3, characterized in that, The enlarged portion (411) is provided with a first baffle (450), one end of the first baffle (450) is connected to the side of the enlarged portion (411) near the second end of the air guide tube (410), and the other end extends toward the sealing member (420) and forms the second opening (440) between the sealing member (420). When the sealing member (420) blocks the second opening (440), a portion of the sealing member (420) abuts against the surface of the second end of the first baffle (450) away from the air duct (410).

6. The electronic device according to claim 5, characterized in that, The enlarged portion (411) is further provided with a second baffle (460), the first baffle (450) and the second baffle (460) are arranged opposite to each other, one end of the second baffle (460) is connected to the side of the enlarged portion (411) near the first end of the air guide tube (410), and the other end extends toward the sealing member (420) and forms the first opening (430) with the sealing member (420); When the sealing member (420) blocks the first opening (430), a portion of the sealing member (420) abuts against the surface of the second baffle (460) at the first end opposite to the air duct (410).

7. The electronic device according to claim 6, characterized in that, The surface of the first baffle (450) facing away from the second end of the air duct (410) and the surface of the second baffle (460) facing away from the first end of the air duct (410) are both inclined surfaces.

8. The electronic device according to claim 3, characterized in that, The throttle valve (400) also includes a support (470) which is installed inside the air duct (410) and is rotatably connected to the plug (420).

9. The electronic device according to claim 1, characterized in that, The speaker housing (300) includes a first part (320) and a second part (330) connected together; The first part (320) and the speaker (200) form a first acoustic cavity (340), the first acoustic cavity (340) having a sound guide hole (341) that communicates with the outside of the electronic device; The second part (330) forms a second acoustic cavity (350) between the second part (330) and the loudspeaker (200), the first acoustic cavity (340) and the second acoustic cavity (350) are separated from each other, and the second acoustic cavity (350) is provided with the exhaust hole (310).

10. The electronic device according to claim 9, characterized in that, The loudspeaker (200) includes a magnetic sheet (210) with a pressure relief hole (211) on it. The interior of the loudspeaker (200) is connected to the second acoustic cavity (350) through the pressure relief hole (211).

11. The electronic device according to claim 1, characterized in that, The receiving cavity (100) has a vent (110) that connects the outside of the electronic device to the receiving cavity (100), and the vent (110) is covered with a waterproof and breathable membrane.

12. The electronic device according to claim 1, characterized in that, The electronic device further includes a screen (700), a mid-frame (800), and a back cover (900), which together form the receiving cavity (100).

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