Rear sound cavity leakage detection method and detection system of electronic equipment

Abstract

The embodiment of the invention discloses a rear sound cavity leakage detection method and detection system of electronic equipment, and when leakage detection is carried out on a rear sound cavity, only one of the rear sound cavity and a cavity on the two sides of an enclosure structure needs to be communicated with an air pump, the other one is communicated with external atmosphere, and after the air pump is started to carry out air pumping work, leakage detection is carried out on the rear sound cavity. Whether the enclosure structure leaks or not can be judged according to the gas flow value detected by the detection component, if the gas flow is larger than the preset range, it is considered that the enclosure structure leaks, otherwise, it is considered that the enclosure structure meets the use requirement and does not leak, the detection method is simple and rapid, and the reliability of the detection result is high.

Description

Technical Field

[0001] The present application relates to the field of electronic products, and in particular to a method and system for detecting leakage of a rear acoustic cavity of an electronic device. Background Art

[0002] Electronic devices include sound-producing components such as speakers. Usually, a rear sound cavity is provided in the electronic device. The rear sound cavity is roughly located on the back side of the sound-producing component. The rear sound cavity is isolated from the sound-emitting surface of the sound-producing component and other cavities of the electronic device, that is, the rear sound cavity is a sealed cavity. Currently, the rear sound cavity of electronic devices is mainly an enclosure-type rear sound cavity. If there are defects in the enclosure, it is easy to cause leakage of the rear sound cavity. The leakage of the rear sound cavity will cause the shell of the non-enclosed area to vibrate, seriously affecting the quality of the electronic device. Therefore, leakage of the rear sound cavity is one of the main issues of concern to technicians in this field. Summary of the Invention

[0003] The embodiments of the present application provide a rear sound cavity leakage detection system and method for an electronic device that can detect whether an enclosure structure is leaking simply, quickly, and accurately.

[0004] An embodiment of the present application provides a rear sound cavity leakage detection system for an electronic device, the electronic device including a shell, the interior of the shell having a rear sound cavity and a cavity separated by an enclosure structure, the surface of the shell also having a first air permeable portion and a second air permeable portion located on both sides of the enclosure structure; the rear sound cavity can be connected to the external atmosphere through the first air permeable portion, and the cavity can be connected to the external atmosphere through the second air permeable portion, the first air permeable portion and the second air permeable portion can be normally open air permeable portions, that is, when the electronic device is in use, the rear sound cavity can be connected to the external atmosphere through the first air permeable portion, and the cavity is connected to the external atmosphere through the second air permeable portion. Of course, the first air permeable portion and the second air permeable portion can be openings with two states, closed and open. When the electronic device is in use, the first air permeable portion and the second air permeable portion can be in a closed state. When performing rear sound cavity leakage detection, the first air permeable portion and the second air permeable portion can be in an open state, so that the rear sound cavity can be connected to the external atmosphere through the first air permeable portion, and the cavity is connected to the external atmosphere through the second air permeable portion.

[0005] The rear sound cavity leakage detection system in the embodiment of the present application includes:

[0006] An air pump, used for passing air from the first air permeable portion into the rear sound cavity or passing air from the second air permeable portion into the chamber;

[0007] The detection component is used to detect the gas flow at at least one position of the first air permeable portion or the second air permeable portion, so as to determine whether there is a leak in the enclosure structure based on the gas flow.

[0008] When the rear sound cavity leakage detection system provided in the embodiment of the present application performs leakage detection, it is only necessary to connect one of the rear sound cavity and the chamber on both sides of the enclosure structure to the air pump, and the other to the external atmosphere. After starting the air pump to pump air, the air flow value detected by the detection component can be used to determine whether there is a leak in the enclosure structure. If the gas flow rate is greater than the preset range, it is considered that there is a leak in the enclosure structure. Otherwise, it is considered that the enclosure structure meets the use requirements and there is no leakage. The detection method is simple and fast, and the reliability of the detection results is relatively high.

[0009] In one exemplary embodiment, the system further includes a controller configured to determine whether the gas flow rate detected by the detection component exceeds a preset range. If so, the enclosure structure is leaking. The controller is electrically connected to the detection component and is capable of receiving the gas flow rate signal detected by the detection component and determining whether the gas flow rate has exceeded the preset range. If so, the enclosure structure is deemed to have a leak and not meet usage requirements. Otherwise, the enclosure structure is deemed to meet usage requirements. This allows for automated detection and determination by the detection system.

[0010] In one example, a first insertion through hole is provided on a cavity wall of the housing, and an insertion body is installed inside the first insertion through hole in a normal state; the second ventilating portion includes the first insertion through hole;

[0011] When performing rear cavity leak detection, the first insert is removed from the insert through hole so that the cavity can be connected to the outside atmosphere or to an air pump. In this embodiment, the electronic device's own structure can be used to determine whether the enclosure structure has leaks, without the need to add a new structure to the electronic device. In addition, when the first insert through hole is a SIM card slot or a memory card slot, these slots generally have a relatively large flow area, which facilitates the smooth entry of the airflow from the air pump into the cavity, thereby improving the detection efficiency of the detection system.

[0012] In one example, the second breathable portion includes a first through hole provided in a cavity wall of the chamber, and the first through hole is covered with a first waterproof breathable membrane;

[0013] When testing for rear cavity leaks, the cavity is connected to the outside atmosphere via the first waterproof and breathable membrane, or the air pump is connected to the first through-hole. This electronic structure performs rear cavity leak testing by simply connecting the air pump, testing components, and related piping directly to the electronic device, without disassembling other components of the electronic device. This improves detection efficiency and avoids the loss of related electronic components.

[0014] In one example, the electronic device further has a front sound cavity, which forms a sound outlet on the surface of the electronic device. The rear sound cavity and the front sound cavity are connected through a second waterproof breathable membrane, and the first breathable portion includes a sound outlet. When the electronic device with this structure is undergoing leak detection, the air pump can be selectively connected to one side of the sound outlet, and of course, it can also be connected to one side of the second breathable portion. Taking the air pump connected to one side of the second breathable portion as an example, when the enclosure structure of the electronic device with this structure leaks, the gas will flow along the chamber, the enclosure structure, the rear sound cavity, the second waterproof breathable membrane, and the front sound cavity to the sound outlet. When the air pump is connected to one side of the sound outlet and the enclosure structure leaks, the gas flow direction is opposite to the above direction.

[0015] In one example, a second insertion hole is provided on the wall of the rear sound cavity enclosed by the housing. Under normal conditions, a second insertion body is installed inside the second insertion hole. The first ventilating portion includes the second insertion hole.

[0016] When performing a rear sound cavity leakage test, the second plug-in body is removed from the second plug-in through hole so that the rear sound cavity is connected to the outside atmosphere or to an air pump;

[0017] Alternatively, a second through hole is provided on a cavity wall of the rear sound cavity enclosed by the shell, the second through hole is covered with a third waterproof breathable membrane, and the first breathable portion includes the second through hole;

[0018] When testing for rear cavity leaks, the rear cavity is connected to the outside atmosphere via the third waterproof breathable membrane, or the air pump is connected to the second through hole. This embodiment eliminates the need to connect the front cavity; leak detection can be performed using the second plug-in through hole in the cavity wall of the rear cavity, preventing airflow from affecting components related to the front cavity.

[0019] In one example, the air pump's outlet port is connected to the first or second air permeable portion via a connecting conduit. A port of the connecting conduit, distal to the air pump, is circumferentially sealed against the outer wall of the housing, and the first or second air permeable portion is located within the area of the housing encompassed by the port. In this embodiment, the connecting conduit directly interfaces with the housing, allowing pump gas to flow smoothly into the first or second air permeable portion, facilitating connection.

[0020] The present application also provides a method for detecting leakage of a rear acoustic cavity of an electronic device. The electronic device includes a housing, wherein the housing has a rear acoustic cavity and a chamber separated by an enclosure structure. The housing further has a first air permeable portion and a second air permeable portion located on either side of the enclosure structure. The rear acoustic cavity can communicate with the atmosphere outside the electronic device through the first air permeable portion, and the chamber can communicate with the atmosphere outside through the second air permeable portion.

[0021] The rear cavity leakage detection method includes:

[0022] Connecting an air pump to one of the first air permeable portion or the second air permeable portion, and connecting the other one to the atmosphere outside the electronic device;

[0023] Starting the air pump to pump air and detecting the gas flow rate flowing through the first air permeable portion and / or the second air permeable portion;

[0024] Determine whether the gas flow exceeds the preset range. If the gas flow exceeds the preset range, there is a leak in the enclosure structure.

[0025] In one example, the second vent portion is a first insertion through hole provided on the cavity wall of the chamber, and under normal conditions, an insertion body is installed inside the first insertion through hole;

[0026] When performing rear sound cavity leakage detection, the first inserting body is first removed from the first inserting through hole so that the cavity is connected to the external atmosphere through the first inserting through hole, or an air pump is connected.

[0027] In one example, the first vent portion includes a second insertion hole provided in the cavity wall of the rear sound cavity. Under normal conditions, a second insertion body is installed in the second insertion hole.

[0028] When performing rear sound cavity leakage detection, first remove the second plug-in body from the second plug-in through hole so that the rear sound cavity is connected to the atmosphere outside the electronic device or the air pump through the second plug-in through hole.

[0029] In addition, an embodiment of the present application further provides a method for detecting leakage of a rear sound cavity of an electronic device. The electronic device includes a housing, wherein the housing has a sound-emitting component, a front sound cavity, a rear sound cavity, and a chamber, wherein the rear sound cavity and the chamber are separated by an enclosure structure. The method for detecting leakage of the rear sound cavity includes:

[0030] Sealed front sound cavity sound hole;

[0031] Inputting instructions to the control component of the electronic device to control the sound-generating component to emit a sound of a predetermined frequency;

[0032] A vibration sound signal of the rear cover of the shell is obtained, and the loudness of the rear cover is determined based on the detected vibration sound signal. If the loudness exceeds a predetermined loudness range, there is a leak in the enclosure structure.

[0033] The present application also provides a rear sound cavity leakage detection system for an electronic device. The electronic device includes a housing, wherein the housing has a sound-generating component, a front sound cavity, a rear sound cavity, and a chamber. The rear sound cavity and the chamber are separated by an enclosure structure. The rear sound cavity leakage detection system includes:

[0034] A sealing component, used for sealing the front sound cavity sound outlet of the sound-generating component;

[0035] an audio receiver for acquiring vibration sound of a designated side wall of the chamber;

[0036] The controller obtains a vibration sound signal of the rear cover of the shell, and determines the loudness of the rear cover according to the detected vibration sound signal. If the loudness exceeds a predetermined loudness range, there is a leakage in the enclosure structure.

[0037] In the embodiment of the present application, if there is a leak in the enclosure structure, the shell will vibrate and the audio receiver will record the vibration sound of the shell. The detection system and detection method are relatively simple and easy to implement.

[0038] Furthermore, an embodiment of the present application further provides a method for detecting leakage of a rear sound cavity of an electronic device. The electronic device includes a housing, wherein the housing has a sound-emitting component, a front sound cavity, a rear sound cavity, and a chamber. The rear sound cavity and the chamber are separated by an enclosure structure. The chamber has a communication port connected to the atmosphere outside the electronic device. The method for detecting leakage of the rear sound cavity includes:

[0039] Seal the sound outlet of the front sound cavity;

[0040] Inputting instructions to the control component of the electronic device to control the sound-generating component to emit a sound of a predetermined frequency;

[0041] Under the premise that the communication port on the first cavity is in an open state and the audio receiver is placed at the communication port position, if the sound signal detected by the audio receiver exceeds a preset value, there is a leakage in the enclosure structure.

[0042] In addition, an embodiment of the present application further provides a rear sound cavity leakage detection system for an electronic device. The electronic device includes a housing, wherein the housing has a sound-generating component, a front sound cavity, a rear sound cavity, and a chamber. The rear sound cavity and the chamber are separated by an enclosure structure. The chamber has a communication port that communicates with the atmosphere outside the electronic device. The rear sound cavity leakage detection system includes:

[0043] A sealing component, used for sealing the sound outlet of the front sound cavity;

[0044] an audio receiver, configured to acquire a sound signal transmitted from the communication port of the chamber;

[0045] The controller determines that if the sound signal obtained by the audio receiver exceeds a preset value, there is a leakage in the enclosure structure.

[0046] In the embodiment of the present application, if there is a leak in the enclosure structure, the shell will vibrate and the audio receiver will record the vibration sound of the shell. The detection system and detection method are relatively simple and easy to implement.

[0047] The rear sound cavity leakage detection method in the embodiment of the present application is based on the rear sound cavity leakage detection system, so it also has the above-mentioned technical effects of the rear sound cavity leakage detection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1A three-dimensional schematic diagram of an electronic device provided in one embodiment of the present application;

[0049] Figure 2 for Figure 1 A top view of one side of the back cover of the electronic device shown;

[0050] Figure 3 for Figure 2 Middle AA cross-sectional view;

[0051] Figure 4 for Figure 1 Schematic diagram of the electronic device shown being connected to a rear sound cavity leakage detection system;

[0052] Figure 5 This is a flow chart of a rear sound cavity leakage detection method in one embodiment of the present application;

[0053] Figure 6 A schematic diagram of a rear sound cavity leakage detection system for an electronic device provided by another embodiment of the present application;

[0054] Figure 7 A schematic diagram of a rear sound cavity leakage detection system for an electronic device provided in another embodiment of the present application;

[0055] Figure 8 A schematic diagram of a rear sound cavity leakage detection system for an electronic device provided in yet another embodiment of the present application;

[0056] Figure 9 A schematic diagram of a rear sound cavity leakage detection system for an electronic device provided in yet another embodiment of the present application;

[0057] Figure 10 A flowchart of a rear sound cavity leakage detection method provided in another embodiment of the present application;

[0058] Figure 11 A schematic diagram of a rear sound cavity leakage detection system for an electronic device provided in yet another embodiment of the present application;

[0059] Figure 12 This is a graph of frequency and loudness of the enclosure structure in the embodiment of the present application in the scenarios of no leakage, one leakage position, and two leakage positions.

[0060] in, Figures 1 to 11 The one-to-one correspondence between the reference numerals and component names is as follows:

[0061] 100 Device Body; 1 Housing; 1-1 Middle Frame; 101 Cavity; 1011 Rear Sound Cavity; 1012 Chamber; 102 Enclosure Structure; 1021 Enclosure Body; 1022 Elastomer; 104 First Insertion Through Hole; 104' First Through Hole; 105 First Waterproof Breathable Membrane; 106 Second Waterproof Breathable Membrane; 103 Third Waterproof Breathable Membrane; 100A' Third Through Hole; 100A Sound Outlet; 1-2 Back Cover; 2 Display; 3 Light Through Hole; 4 First Insertion Body; 5 Sound-Producing Component; 6 Battery; 7 SIM Card;

[0062] 200 air pump; 210 detection component; 220 controller; 230 connecting pipeline;

[0063] 300 audio receiver. Specific embodiments

[0064] Currently, leakage of the rear sound cavity enclosed by the enclosure structure is mainly obtained through the following methods: First, the audio frequency response of the sound emitted by the sound-emitting component from the sound hole is detected. If the audio frequency response exceeds the preset range, it is considered that there is a leakage in the rear sound cavity. This method has relatively poor sensitivity. There are situations where the vibration of the back cover of the electronic device exceeds the allowable amplitude range, but the audio frequency response shows that it is still within the preset range. Second, the laser method is used to measure the amplitude of the shell in a non-contact manner. If the amplitude of the back cover exceeds the allowable amplitude range, it is considered that there is a leakage in the rear sound cavity. This method has low accuracy and is greatly affected by the material of the back cover. Third, an accelerometer is used to measure the acceleration of the back cover in contact. This method requires accelerometer patches to be pasted at different positions on the back cover. The measurement cycle is long and it is not suitable for mass production.

[0065] Therefore, how to provide a detection method for rear sound cavity leakage with relatively high detection accuracy and relatively high detection efficiency is a technical problem that needs to be solved urgently by those skilled in the art.

[0066] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0067] The electronic devices provided in the embodiments of the present application may include handheld devices, vehicle-mounted devices, wearable devices, terminal devices, or other processing devices connected to a wireless modem. They may also include cellular phones, smart phones, personal digital assistants (PDAs), tablet computers, laptop computers, video cameras, video recorders, cameras, smart watches, smart wristbands, augmented reality (AR) devices, virtual reality (VR) devices, vehicle-mounted computers, and other devices. The embodiments of the present application do not impose any particular restrictions on the specific forms of the above-mentioned electronic devices. For ease of understanding, the following description takes the electronic device as an example of a mobile phone.

[0068] Please combine Figure 1 、 Figure 2 and Figure 3 understand, Figure 1 A three-dimensional schematic diagram of an electronic device provided in one embodiment of the present application; Figure 2 for Figure 1 A top view of one side of the back cover of the electronic device shown; Figure 3 for Figure 2 AA cross-sectional view diagram.

[0069] Please refer to Figure 1 The electronic device 100 provided in the embodiment of the present application includes a housing 1, a display screen 2 and other components. The housing 1 mainly plays the role of supporting and protecting the electronic components of the electronic device 100. Various electronic components of the electronic device 100 can be arranged inside the housing 1. The electronic components installed inside the housing 1 include a circuit board, a battery 6 module, a wireless communication module, a camera module ( Figure 1 The electronic device 100 includes a light hole (illustrated in the figure) opposite the front camera module, a sound-generating component 5, a battery 6, and other components. The placement and installation of these electronic components are not specifically limited in this embodiment. The sound-generating component 5 may include an earpiece, a speaker (Speek, SPK), or other components capable of emitting sound. Those skilled in the art will appreciate that the electronic device 100 may include one or more of the aforementioned electronic components, and the number and types of electronic components include, but are not limited to, those listed above.

[0070] The specific structure of the housing 1 may vary depending on the type of electronic device 100 .

[0071] In a specific embodiment of the present application, Figure 1As shown, the shell 1 may include a middle frame 1-1 and a back cover 1-2, and the display screen 2 may be installed on the side of the middle frame 1-1 away from the back cover 1-2. The display screen 2 is located on the front of the electronic device 100, and the back cover 1-2 is located on the back of the electronic device 100. The materials of the middle frame 1-1 and the back cover 1-2 are not limited here. In specific practice, those skilled in the art can choose according to actual needs; for example, the middle frame 1-1 and the back cover 1-2 may include a metal body and a plastic body, for example, a shell 1 with an integral structure formed by injection molding a plastic body with a metal body as a skeleton. The metal body may be aluminum alloy, stainless steel, titanium alloy, etc., and the plastic body may be made of polystyrene, polypropylene, polyethylene, etc. Of course, if the use requirements are met, the shell 1 may also include only a plastic body, and the shell 1 may be formed by injection molding, or the shell 1 may also include only a metal body, and the shell 1 may be formed by machining.

[0072] In the embodiment of the present application, the front side of the electronic device 100 can be understood as the side facing the user when the user uses the electronic device 100, that is, Figure 1 The side where the middle display screen 2 is located, the back side of the electronic device 100 can be understood as the side facing away from the user when the user uses the electronic device 100.

[0073] In the embodiment of the present application, the display screen 2 includes a transparent cover plate and a display module. The display module can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a quantum dot light-emitting diode (QLED), or electrophoretic display technology (E-Ink). As previously described, the display module includes several functional layers to enable image and video display. The number and specific structure of the functional layers can be referenced above and in accordance with current technology and will not be described in detail here. Currently, the display screen 2 of the electronic device 100 mostly uses OLED. The transparent cover plate covers the outside of the display module to protect it. The transparent cover plate can be a glass cover plate, or other transparent materials that can provide protection, such as transparent polyimide. The display screen 2 may also have a touch function, that is, the display screen 2 may be a touch screen.

[0074] Of course, the structure of the electronic device 100 is not limited to the above structure, and the positions of the display screen 2 and the back cover 1-2 can be relatively swapped. The electronic device 100 can also be a foldable device, and the electronic device 100 can have two or more display screens 2. Figure 1 The technical solution and technical effects are further introduced by taking the electronic device 100 as an example.

[0075] Please refer to Figure 2 and Figure 3 It is understood that the shell 1 has a rear sound cavity 1011 inside, and the rear sound cavity 1011 is usually located on the side of the shell 1 facing away from the display screen 2. Specifically, the shell 1 has an installation cavity on the side facing away from the display screen 2, and a retaining structure 102 is provided inside the installation cavity. The retaining structure 102 divides the installation cavity into the rear sound cavity 1011 and the cavity 1012. In other words, the shell 1 forms a rear sound cavity 1011 and a cavity 1012 on both sides of the retaining structure 102. The battery 6 and other related electronic devices are installed inside the cavity 1012. The rear sound cavity 1011 described in this article is located on the back side of the sound-emitting surface of the sound-emitting component 5, and is used to improve the sound quality of the sound-emitting component 5. The rear sound cavity 1011 is located on the side of the sound-emitting component 5 facing away from the sound-emitting surface.

[0076] like Figure 3 As shown, the enclosure structure 102 may include an enclosure body 1021 and an elastic body 1022. The elastic body 1022 may be a component such as foam or viscose. The enclosure body 1021 may be integrally formed with the middle frame 1-1, that is, the enclosure body 1021 may be a part of the middle frame 1-1. Of course, the enclosure body 1021 may also be a separate structure from the middle frame 1-1, and the enclosure body 1021 may be fixed to the middle frame 1-1 by bonding or welding. The sound emitted by the sound-emitting surface of the sound-emitting component 5 passes through the front sound cavity 1013 and is transmitted to the outside of the electronic device 100 from the sound outlet 100A. The front sound cavity 1013 and the rear sound cavity 1011 are also relatively isolated. Regarding the method of achieving isolation between the two, this article will not go into details. Please refer to existing information. Since the sound-emitting component 5 needs to balance the air pressure in front and behind the diaphragm, a waterproof and breathable membrane is usually provided between the rear sound cavity 1011 and the front sound cavity 1013, so that the rear sound cavity 1011 can be connected to the external atmosphere of the electronic device 100 through the front sound cavity 1013, or the rear sound cavity 1011 can be connected to the external atmosphere through a channel provided on the shell 1.

[0077] Please refer to Figure 3In this embodiment of the present application, a first insertion hole 104 is provided on the cavity wall of the chamber 1012. An insertion body is installed within the first insertion hole 104. The insertion body can be a card tray for accommodating a SIM card 7 or a memory card. The card tray is provided with a card slot for accommodating the SIM card 7 or the memory card. When the card tray is inserted into the first insertion hole 104, the SIM card 7 or the memory card is installed in the corresponding position within the housing 1. The card tray can be removed from the first insertion hole 104. When the card tray is removed from the first insertion hole 104, the chamber 1012 can communicate with the atmosphere outside the electronic device 100.

[0078] From the above description, it can be seen that in the embodiment of the present application, the electronic device 100 has a rear sound cavity 1011 and a cavity 1012 located on both sides of the enclosure structure 102, wherein the surface of the shell 1 also has a first air permeable portion and a second air permeable portion located on both sides of the enclosure structure 102; the rear sound cavity 1011 can be connected to the external atmosphere through the first air permeable portion, and the cavity 1012 can be connected to the external atmosphere through the second air permeable portion. Figure 3 The figure shows a specific embodiment in which the second air permeable portion is the first plug-in through hole 104 and the first air permeable portion is the sound outlet hole 100A of the front sound cavity 1013. The following text also gives specific embodiments in which the first air permeable portion and the second air permeable portion are in other structural forms. Please see the following description for details.

[0079] Based on the structure of the above-mentioned electronic device 100 , an embodiment of the present application provides a leakage detection method and detection system for the rear sound cavity 1011 , which can detect whether a leakage occurs in the enclosure structure 102 .

[0080] In the embodiment of the present application, the rear sound cavity 1011 leakage detection system includes an air pump 200, a detection component 210 and a controller 220. The air pump 200 is used to pass gas from the first air permeable part to the rear sound cavity 1011 or from the second air permeable part to the chamber 1012. The detection component 210 is used to detect the gas flow at at least one position of the first air permeable part or the second air permeable part. The controller 220 determines whether the gas flow detected by the detection component 210 exceeds a preset range. If the judgment result is yes, there is a leak in the enclosure structure 102. The above-mentioned rear sound cavity 1011 leakage detection system is for Figure 3 When the enclosure structure 102 in the electronic device 100 is subjected to leakage detection, the components may be connected in the following manner.

[0081] Please refer to Figure 4 The air outlet of the air pump 200 is connected to the first inserting through hole 104 via a pipeline, so that the air pump 200 pumps gas into the interior of the chamber 1012 through the first inserting through hole 104. The detection component 210 is connected to the connecting pipeline between the air pump 200 and the first inserting through hole 104 and is used to detect the gas flow at the position of the first inserting through hole 104. The detection component 210 can be a flow meter.

[0082] Please refer to Figure 5 Specifically, the rear sound cavity 1011 leakage detection method includes the following steps:

[0083] S10, removing the first inserting body 4 from the first inserting through hole 104;

[0084] In this way, the cavity 1012 can be connected to the external atmosphere of the electronic device 100 through the first insertion through hole 104 . Figure 4 In the electronic device 100 shown, under normal conditions, the rear sound cavity 1011 can always be connected to the sound outlet 100A through the second waterproof breathable membrane 106.

[0085] S11, connecting the air pump 200 to the first insertion hole 104, and connecting the sound outlet 100A to the external atmosphere of the electronic device 100;

[0086] S12, starting the air pump 200 to pump air and detecting the gas flow rate flowing through the first insertion through hole 104;

[0087] In the embodiment of the present application, the detection component 210 is installed on the connecting pipeline between the air pump 200 and the first insertion through hole 104, and can detect the air flow rate on the connecting pipeline.

[0088] S13. Determine whether the gas flow exceeds a preset range. If the gas flow exceeds the preset range, it is determined that the enclosure structure 102 has a leak. If the gas flow is within the preset range, it is determined that the enclosure structure 102 has no leak.

[0089] Theoretically, if there is no leakage in the enclosure structure 102 or the leakage is within the design requirements, the airflow will be confined to the interior of the chamber 1012, so the value detected by the detection component 210 is relatively small, that is, the detection value of the detection component 210 is within the preset range, and the preset range can be reasonably set according to the design requirements of the specific electronic device 100. When the leakage of the enclosure structure 102 is large, the gas on the side of the chamber 1012 passes through the enclosure structure 102 and enters the rear sound cavity 1011. After passing through the second waterproof and breathable membrane 106, it flows out from the sound outlet 100A, so the reading of the detection component 210 is relatively large. That is, when the gas flow detected by the detection component 210 exceeds the preset range, it can be considered that there is a leak in the enclosure structure 102, the electronic device 100 does not meet the design requirements, and the sound-generating component 5 will produce shell vibration and other phenomena when making sounds.

[0090] The judgment of step S13 can be performed by the controller 220 to realize automatic detection. Of course, in some other embodiments, the operator can also make a judgment by observing the reading of the detection component 210.

[0091] When the rear sound cavity 1011 leakage detection system provided in the embodiment of the present application performs leakage detection, it is only necessary to connect one of the rear sound cavity 1011 and the chamber 1012 on both sides of the enclosure structure 102 to the air pump 200, and the other to the external atmosphere. After starting the air pump 200 to pump air, the air flow value detected by the detection component 210 can be used to determine whether there is a leak in the enclosure structure 102. The detection method is simple and fast, and the reliability of the detection result is relatively high.

[0092] In particular, in the above embodiment, the first plug-in through hole 104 is a structural hole that exists to realize the function of the electronic device 100 itself. In this way, the electronic device 100 itself structure can be used to determine whether the enclosure structure 102 is leaking, and there is no need to set up a new structure on the electronic device 100 to realize leakage detection of the rear sound cavity 1011. Moreover, when the first plug-in through hole 104 is a SIM card 7 jack or a memory card jack, such jacks generally have a larger flow area, which is conducive to the smooth entry of the airflow of the air pump 200 into the chamber 1012, thereby improving the detection efficiency of the detection system.

[0093] In step S12, the air pump 200 is connected to the first insertion hole 104. Of course, the air pump 200 can also be connected to the sound outlet 100A. Similarly, the detection component 210 can also be installed on the sound outlet 100A.

[0094] Figure 4 The first ventilation portion in the electronic device 100 shown in the figure is a structure that can be connected to the outside atmosphere under normal conditions, and the second ventilation portion is a structure that is in a closed state under normal conditions, that is, the second ventilation portion has two states, open and closed. When the second ventilation portion is in the open state, the chamber 1012 is connected to the outside atmosphere through the second ventilation portion. When the electronic device 100 is in normal use, the second ventilation portion can be closed. Of course, the structure of the second ventilation portion and the first ventilation portion is not limited to the above structure. The second ventilation portion can also be a structure that is connected to the outside atmosphere under normal conditions, and the first ventilation portion can also be a structure that has two states, open and closed. Several feasible implementations of the first ventilation portion and the second ventilation portion are given below. The other structures of the electronic device 100 are basically the same as those in the preceding text. Figure 3 same.

[0095] Please refer to Figure 6 , Figure 6 The electronic device 100 is shown with Figure 3 The difference between the electronic device 100 shown in FIG. 1 is mainly in the structure of the first ventilating portion and the second ventilating portion. For other structures, please refer to Figure 3 and Figure 4 Description. Figure 7The second ventilation portion is a first through hole 104' arranged on the cavity wall of the cavity 1012. Specifically, the first through hole 104' is arranged on the cavity wall of the cavity 1012 away from the rear sound cavity 1011. The first through hole 104' is covered with a first waterproof breathable membrane 105. That is, under normal circumstances, the cavity 1012 is connected to the external atmosphere through the first waterproof breathable membrane 105.

[0096] Figure 6 The first air permeable portion is a second through hole 100A' provided on the shell 1, and the second through hole 100A' is covered with a third waterproof breathable membrane 103. The second through hole 100A' also plays the role of balancing the air pressure before and after the diaphragm, that is, in this embodiment, the through hole for balancing the air pressure before and after the diaphragm is directly opened on the cavity wall of the rear sound cavity 1011.

[0097] When performing leakage detection on the rear sound cavity 1011, the air pump 200 can be connected to the first through hole 104' or the second through hole 100A'. Figure 6 The schematic diagram of the air pump 200 connected to the first through hole 104' is shown. Figure 3 Basically the same, the difference is that: under normal circumstances, the chamber 1012 and the rear sound cavity 1011 in the embodiment of the present application are connected to the external atmosphere, and the air pump 200 and other components can be directly connected without disassembling the plug-in body, which has higher detection efficiency.

[0098] See Figure 7 ,and Figure 6 The difference is, Figure 7 The second ventilation portion of the provided electronic device 100 ( Figure 7 The first waterproof breathable membrane 105 is located on the rear shell 1-2, and the other structures are the same as Figure 6 same. Figure 7 FIG shows that the air pump 200 is connected to the second through hole 100A', of course, the air pump 200 can also be connected to the first through hole 104' ( Figure 7 The first waterproof breathable membrane 105 covers one side of the first through hole 104'). The specific leakage detection method is not described here.

[0099] See Figure 8 , Figure 8 The sound generating component 5 is not shown in the figure. Figure 2 The AA section view has the same direction and is located at Figure 2 On the right or left side of AA, the second plug-in body (not shown in the figure) does not affect the installation of the sound component 5. Figure 6 compared to, Figure 8The difference is that a second insertion through hole 100A" is provided on the cavity wall at the rear sound cavity 1011. Under normal circumstances, a second insertion body (not shown in the figure) is installed inside the second insertion through hole 100A". The second insertion through hole 100A" can be an insertion hole for a SIM card 7 or a memory card, and of course the second insertion body can be a SIM card 7 tray or a memory card tray. Figure 8 For other structures of the electronic device shown, please refer to Figure 6 and Figure 3 Description of electronic equipment.

[0100] In this embodiment, the air pump 200 can be connected to the second insertion through hole 100A″ or the first through hole 104 ′. Figure 8 FIG. 2 shows an example in which the air pump 200 is connected to the second insertion through hole 100A″. Compared with the first through hole 104 ′, the flow area of the second insertion through hole 100A″ is larger, which facilitates the inflation of air into the rear sound cavity.

[0101] Please refer to Figure 9 In another specific embodiment, the specific structure of the electronic device 100 in this embodiment is basically the same as Figure 3 The electronic device 100 shown is the same and will not be described in detail here. Figure 10 It is understood that the embodiment of the present application also provides a method for detecting leakage of the rear sound cavity 1011, which specifically includes:

[0102] S31, sealing the sound outlet hole 100A of the front sound cavity 1013 of the sound-emitting component 5;

[0103] Accordingly, in the embodiment of the present application, the rear sound cavity 1011 leakage detection system has a sealing component 310, and the sound outlet 100A of the front sound cavity 1013 can be sealed by a sealing component. The sealing component can be of the following types: The first sealing method: Please refer to Figure 9 The sealing component 310 is a jig, which is prepared in advance. The jig has a contoured surface, which can be pressed against the shell 1 located in the circumference of the sound hole 100A for sealing. Of course, the contoured surface and the shell 1 can be pressed against each other by external force to improve the sealing performance. Furthermore, elastic components such as foam can be added between the contoured surface and the shell 1 to improve the sealing performance. This sealing method mainly adopts the method of sealing between the jig and the shell 1, which has little impact on the structure of the sound hole 100A and has relatively high sealing reliability. The second sealing method: the sealing component is tape or foam, and the sound hole 100A is directly sealed with tape or foam. This sealing method is simple.

[0104] S32, inputting an instruction to the control component of the electronic device 100 to control the sound-emitting component 5 to emit a sound of a predetermined frequency;

[0105] Through research, the inventors of this application have discovered that if the rear sound cavity 1011 leaks, the lower the frequency of the sound emitted by the sound-generating component 5, the more pronounced the vibration of the rear cover 1-2. Therefore, the predetermined frequency can be a low-frequency sound. The approximate frequency range of low-frequency sound is 20Hz to 500Hz. The control component can be the mainboard of the electronic device 100, which controls the operating parameters of the sound-generating component 5.

[0106] S33. Obtain the vibration sound signal of the rear cover 1-2 of the shell 1, and determine the loudness of the rear cover 1-2 based on the detected vibration sound signal. If the loudness is within a predetermined loudness range, the enclosure structure 102 has no leakage; otherwise, the enclosure structure 102 has leakage.

[0107] In this embodiment of the present application, the rear sound cavity 1011 leakage detection system includes an audio receiver 300 for acquiring sound signals emitted from the communication port of the cavity 1012. The audio receiver 300 can be located outside the housing 1. As described above, when the enclosure structure 102 divides the back space of the display screen 2 into the rear sound cavity 1011 and the cavity 1012, the audio receiver can be located approximately in the center of the cavity 1012. The vibration amplitude of the housing 1 is greatest in the center of the cavity 1012, and accordingly, the detected sound is also relatively loud. The audio receiver 300 can be a microphone or other component capable of receiving sound.

[0108] Accordingly, the embodiment of the present application includes a controller 220 that determines that if the sound signal acquired by the audio receiver exceeds a preset value, then there is a leakage in the enclosure structure 102.

[0109] In the embodiment of the present application, if there is a leak in the enclosure structure 102, the shell 1 will vibrate, and the audio receiver will record the vibration sound of the shell 1. The detection system and detection method are relatively simple and easy to implement.

[0110] Please refer to Figure 11 In another specific embodiment, the electronic device 100 includes a housing 1, which has a sound-generating component 5, a front sound cavity 1013, a rear sound cavity 1011, and a chamber 1012. The rear sound cavity 1011 and the chamber 1012 are separated by an enclosure structure 102. The chamber 1012 has a communication port connected to the atmosphere outside the electronic device 100. The structure of the communication port can be referred to Figure 4 The first insertion hole 104 in the Figure 6 The specific structure of the electronic device 100 in this embodiment is basically the same as Figure 3 The electronic device 100 shown is the same. This embodiment of the application also provides a method for detecting leakage of the rear sound cavity 1011, specifically comprising:

[0111] S41, sealing the sound outlet hole 100A of the front sound cavity 1013 of the sound-emitting component 5;

[0112] The sealing method of the sound outlet 100A in this step can refer to step S31 and will not be described here in detail.

[0113] S42, inputting an instruction to the control component of the electronic device 100 to control the sound-emitting component 5 to emit a sound of a predetermined frequency;

[0114] For the conditions of the predetermined frequency, reference may be made to the description in step S32 . The control component may be a mainboard of the electronic device 100 , which controls the working parameters of the sound-generating component 5 .

[0115] S43. Under the premise that the communication port on the first cavity is in an open state, place an audio receiver at the communication port to detect the sound signal. If the sound signal exceeds a preset value, there is a leakage in the enclosure structure 102. Otherwise, there is no leakage in the enclosure structure 102.

[0116] In this step, the first cavity can be connected to the outside atmosphere through the connecting port, which can be a SIM card 7 installation hole or a memory card installation hole or a charging port, etc. When performing a leak detection, it is only necessary to unplug the SIM card 7 or the memory card installed at the connecting port. Of course, the setting method of the connecting port in this step can also refer to Figure 7 The first through hole 104' (the position indicated by the first waterproof breathable membrane 105) is set.

[0117] In this embodiment, if there is a leak in the enclosure structure 102, the sound of the sound-emitting component 5 will pass through the leakage position of the enclosure structure 102 from the rear sound cavity 1011, enter the chamber 1012, and then flow through the chamber 1012 to the external environment through the through hole. In this way, the audio receiver can capture the sound flowing out of the through hole, and then determine that there is a leak point in the enclosure structure 102 and the rear sound cavity 1011 is leaking.

[0118] Taking the audio receiver as a microphone as an example, when there is a leak in the enclosure structure 102, the microphone will record an obvious sound signal.

[0119] For the above detection method, the present application embodiment further conducted simulation experiments, please refer to Figure 12 , Figure 12 The horizontal axis of the coordinate system represents the sound frequency in Hertz (Hz), and the vertical axis represents the sound loudness in decibels (dB). Figure 12Three curves f1, f2 and f3 are shown in the figure. f1 is a curve relationship diagram between the sound frequency and the detected loudness when the leakage of the enclosure structure 102 meets the design requirements; f2 is a curve relationship diagram between the sound frequency and the detected loudness when there is one leakage point on the enclosure structure 102; f3 is a curve relationship diagram between the sound frequency and the detected loudness when there are two leakage points on the enclosure structure 102. Figure 12 It can be seen that the greater the leakage of the enclosure structure 102, the greater the loudness reading.

[0120] In the above two implementations, it is only necessary to use an audio receiver to detect whether the rear sound cavity 1011 is leaking, which has a simple structure and is easy to implement.

[0121] It should be noted that Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 The dotted line with an arrow in the figure indicates the direction of sound propagation.

[0122] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0123] The directional terms mentioned in the embodiments of the present application, such as "inside" and "outside", etc., are only references to the directions in the 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.

[0124] In the description of the embodiments of the present application, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0125] 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 three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0126] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above examples is only intended to help understand the method and core ideas of this application. It should be noted that for those skilled in the art, without departing from the principles of this application, various improvements and modifications can be made to this application, and such improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A rear sound cavity leakage detection system for an electronic device, characterized in that: The electronic device includes a housing, wherein the interior of the housing has a rear sound cavity and a chamber separated by an enclosure structure, and a surface of the housing further has a first air permeable portion and a second air permeable portion located on both sides of the enclosure structure; the rear sound cavity can communicate with the external atmosphere through the first air permeable portion, and the chamber can communicate with the external atmosphere through the second air permeable portion. The rear sound cavity leakage detection system includes: an air pump, configured to introduce air from the first air permeable portion into the rear sound cavity or introduce air from the second air permeable portion into the chamber; The detection component is used to detect the gas flow at at least one position of the first air permeable portion or the second air permeable portion, so as to determine whether there is leakage in the enclosure structure based on the gas flow.

2. The rear sound cavity leakage detection system according to claim 1, wherein: The cavity wall of the housing enclosing the cavity is provided with a first insertion through hole. Under normal conditions, an insertion body is installed inside the first insertion through hole; the second ventilating portion includes the first insertion through hole; When performing the rear sound cavity leakage detection, the first inserting body is removed from the inserting through hole so that the cavity is connected to the external atmosphere or connected to the air pump.

3. The rear sound cavity leakage detection system according to claim 1, wherein: The second air-permeable portion includes a first through hole provided in the cavity wall of the cavity, and the first through hole is covered with a first waterproof air-permeable membrane; When the rear sound cavity leakage detection is performed, the cavity is connected to the external atmosphere through the first waterproof breathable membrane, or the air pump is connected to the first through hole.

4. The rear sound cavity leakage detection system according to any one of claims 1 to 3, characterized in that: The electronic device further comprises a front sound cavity, wherein a sound outlet is formed in the front sound cavity on the surface of the electronic device. The rear sound cavity and the front sound cavity are connected via a second waterproof breathable membrane, and the first breathable portion comprises the sound outlet.

5. The rear sound cavity leakage detection system according to any one of claims 1 to 3, characterized in that: A second insertion hole is provided on the cavity wall of the housing that forms the rear sound cavity. Under normal conditions, a second insertion body is installed inside the second insertion hole; the first ventilating portion includes the second insertion hole; When performing the rear sound cavity leakage detection, the second plug-in body is removed from the second plug-in through hole so that the rear sound cavity is connected to the external atmosphere or connected to the air pump; Alternatively, a second through hole is provided on a cavity wall of the shell that encloses the rear sound cavity, the second through hole is covered with a third waterproof breathable membrane, and the first breathable portion includes the second through hole; When the rear sound cavity leakage detection is performed, the rear sound cavity is connected to the external atmosphere through the third waterproof breathable membrane, or the air pump is connected to the second through hole.

6. The rear sound cavity leakage detection system according to any one of claims 1 to 5, characterized in that: The air outlet working port of the air pump is connected to the first air permeable part or the second air permeable part through a connecting pipe. The connecting pipe is circumferentially sealed to the outer wall of the shell away from a port of the air pump, and the first air permeable part or the second air permeable part is located on the area of the shell covered by the port.

7. The rear sound cavity leakage detection system according to any one of claims 1 to 6, characterized in that: It also includes a controller for judging whether the gas flow detected by the detection component exceeds a preset range. If the judgment result is yes, there is a leakage in the enclosure structure.

8. A method for detecting rear sound cavity leakage of an electronic device, characterized in that: The electronic device includes a housing, the interior of the housing having a rear sound cavity and a chamber separated by an enclosure structure, and the surface of the housing further having a first ventilating portion and a second ventilating portion located on either side of the enclosure structure; the rear sound cavity can communicate with the atmosphere outside the electronic device through the first ventilating portion, and the chamber can communicate with the atmosphere outside through the second ventilating portion; The rear sound cavity leakage detection method comprises: Connecting an air pump to one of the first air permeable portion or the second air permeable portion, and connecting the other one to the atmosphere outside the electronic device; Starting the air pump to pump air, and detecting the gas flow rate flowing through the first air permeable portion and / or the second air permeable portion; It is determined whether the gas flow exceeds a preset range. If the gas flow exceeds the preset range, there is a leakage in the enclosure structure.

9. The method for detecting rear sound cavity leakage of an electronic device according to claim 8, wherein: The second air permeable portion is a first insertion through hole provided on the cavity wall of the chamber. Under normal conditions, an insertion body is installed inside the first insertion through hole. When performing the rear sound cavity leakage detection, the first inserting body is first removed from the first inserting through hole so that the chamber is connected to the external atmosphere through the first inserting through hole, or connected to the air pump.

10. The method for detecting rear sound cavity leakage of an electronic device according to claim 8 or 9, wherein: The first vent portion includes a second insertion hole provided on the cavity wall of the rear sound cavity, and a second insertion body is installed in the second insertion hole in a normal state; When performing the rear sound cavity leakage detection, the second inserting body is first removed from the second inserting through hole so that the rear sound cavity is connected to the atmosphere outside the electronic device or the air pump through the second inserting through hole.

11. A method for detecting rear sound cavity leakage of an electronic device, characterized in that: The electronic device includes a housing, wherein a sound-generating component, a front sound cavity, a rear sound cavity, and a cavity are provided inside the housing, wherein the rear sound cavity and the cavity are separated by an enclosure structure; and the rear sound cavity leakage detection method includes: Sealing the front sound cavity sound outlet hole; Inputting instructions to the control component of the electronic device to control the sound-generating component to emit a sound of a predetermined frequency; A vibration sound signal of the rear cover of the shell is obtained, and the loudness of the rear cover is determined according to the detected vibration sound signal. If the loudness exceeds a predetermined loudness range, leakage occurs in the enclosure structure.

12. A rear sound cavity leakage detection system for an electronic device, characterized in that: The electronic device includes a housing, wherein a sound-generating component, a front sound cavity, a rear sound cavity, and a cavity are provided inside the housing, wherein the rear sound cavity and the cavity are separated by an enclosure structure; and the rear sound cavity leakage detection system includes: A sealing component, used for sealing the front sound cavity sound outlet of the sound-generating component; an audio receiver for acquiring vibration sound of a designated side wall of the chamber; The controller obtains a vibration sound signal of the rear cover of the housing, and determines the loudness of the rear cover according to the detected vibration sound signal. If the loudness exceeds a predetermined loudness range, the enclosure structure is leaking.

13. A method for detecting rear sound cavity leakage of an electronic device, characterized in that: The electronic device includes a housing, wherein a sound-generating component, a front sound cavity, a rear sound cavity, and a cavity are provided inside the housing, wherein the rear sound cavity and the cavity are separated by an enclosure structure, and the cavity has a communication port connected to the atmosphere outside the electronic device; The rear sound cavity leakage detection method comprises: Sealing the sound outlet of the front sound cavity; Inputting instructions to the control component of the electronic device to control the sound-generating component to emit a sound of a predetermined frequency; Under the premise that the communication port on the first cavity is in an open state and an audio receiver is placed at the communication port, if the sound signal detected by the audio receiver exceeds a preset value, the enclosure structure has a leak.

14. A rear sound cavity leakage detection system for an electronic device, characterized in that: The electronic device includes a housing, wherein a sound-generating component, a front sound cavity, a rear sound cavity, and a cavity are provided inside the housing, wherein the rear sound cavity and the cavity are separated by an enclosure structure, and the cavity has a communication port connected to the atmosphere outside the electronic device; The rear sound cavity leakage detection system includes: A sealing component, used for sealing the sound outlet of the front sound cavity; an audio receiver, configured to acquire a sound signal transmitted from the communication port of the chamber; The controller determines that if the sound signal obtained by the audio receiver exceeds a preset value, then there is leakage in the enclosure structure.

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