A method and system for detecting a rear sound cavity leakage of an electronic device

Abstract

The application discloses a method and system for detecting leakage of a rear sound cavity of an electronic device. When detecting leakage of the rear sound cavity, one of the rear sound cavity and the chamber on the two sides of the enclosing structure is connected to an air pump, and the other is connected to 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 the enclosing structure has leakage. If the air flow is greater than a preset range, it is considered that the enclosing structure has leakage. Otherwise, it is considered that the enclosing structure meets the use requirement and has no leakage. The detection method is simple and fast, and the reliability of the detection result is relatively high.

Description

Technical Field

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

[0002] Electronic devices include sound-producing components such as speakers. Typically, these devices contain a rear acoustic cavity, generally located behind the sound-producing component. This rear acoustic cavity is isolated from the sound-emitting surface of the component and other cavities within the electronic device; that is, it is a sealed cavity. Currently, the rear acoustic cavities in electronic devices are primarily enclosed. Defects in the enclosure can easily cause leakage, which can lead to vibrations in the non-enclosed areas of the casing, severely impacting the quality of the electronic device. Therefore, rear acoustic cavity leakage is one of the main concerns for those skilled in the art. Summary of the Invention

[0003] This application provides a simple, fast, and accurate system and method for detecting leakage in the rear acoustic cavity of electronic devices, as well as a detection method for detecting whether the enclosure structure is leaking.

[0004] This application provides a rear acoustic cavity leakage detection system for an electronic device. The electronic device includes a housing, and the interior of the housing has a rear acoustic cavity and a chamber separated by a enclosure structure. The surface of the housing also has a first vent and a second vent located on both sides of the enclosure structure. The rear acoustic cavity can communicate with the outside atmosphere through the first vent, and the chamber can communicate with the outside atmosphere through the second vent. The first and second vents can be normally open vents, meaning that during use, the rear acoustic cavity can communicate with the outside atmosphere through the first vent, and the chamber can communicate with the outside atmosphere through the second vent. Of course, the first and second vents can be openings with both closed and open states. When the electronic device is in use, the first and second vents can be in the closed state. When performing rear acoustic cavity leakage detection, the first and second vents can be in the open state, so that the rear acoustic cavity can communicate with the outside atmosphere through the first vent, and the chamber can communicate with the outside atmosphere through the second vent.

[0005] The rear acoustic cavity leakage detection system in this embodiment includes:

[0006] An air pump is used to introduce gas from the first vent to the rear acoustic cavity or from the second vent to the chamber.

[0007] The detection component is used to detect the gas flow rate at at least one of the first or second venting sections in order to determine whether there is a leak in the enclosure structure based on the gas flow rate.

[0008] When performing leakage detection, the rear acoustic cavity leakage detection system provided in this application only needs to connect one of the rear acoustic cavities and chambers on both sides of the enclosure structure to an air pump and the other to the outside atmosphere. After starting the air pump, the airflow value detected by the detection component can determine whether there is a leakage in the enclosure structure. If the gas flow rate is greater than the preset range, it is considered that there is a leakage in the enclosure structure; otherwise, it is considered that the enclosure structure meets the usage 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 example, the system also includes a controller that determines whether the gas flow rate detected by the detection component exceeds a preset range. If the determination result is yes, then the enclosure structure is considered to have a leak. The controller is electrically connected to the detection component and can receive the gas flow rate signal detected by the detection component, and determine whether the gas flow rate has exceeded the preset range. If the gas flow rate exceeds the preset range, the enclosure structure is considered to have a leak and does not meet the usage requirements; otherwise, the enclosure structure is considered to meet the usage requirements. This enables the detection system to automatically detect and determine the leak.

[0010] In one example, a first insertion through hole is provided on the cavity wall of the housing that forms the chamber, and under normal conditions, an insertion body is installed inside the first insertion through hole; the second vent includes the first insertion through hole;

[0011] When performing rear acoustic cavity leakage detection, the first insert is removed from the insert through-hole to allow the cavity to connect to the external atmosphere or to the air pump. In this embodiment, the presence of leakage in the enclosure structure can be detected using the electronic device's own structure, eliminating the need for a new structure on the electronic device to perform rear acoustic cavity leakage detection. Furthermore, when the first insert through-hole is a SIM card slot or memory card slot, these slots generally have a large flow area, which facilitates smooth airflow from the air pump into the cavity, improving the detection efficiency of the detection system.

[0012] In one example, the second vent includes a first through hole disposed in the cavity wall of the chamber, the first through hole being covered by a first waterproof and breathable membrane;

[0013] When performing rear acoustic cavity leakage detection, the cavity is connected to the external atmosphere through a first waterproof and breathable membrane, or the air pump is connected to the first through hole. This electronic structure allows for rear acoustic cavity leakage detection by directly connecting the air pump, detection components, and related pipelines to the electronic device, eliminating the need to disassemble other components. This results in high detection efficiency and avoids the loss of relevant electronic parts.

[0014] In one example, the electronic device also has a front acoustic cavity with a sound outlet formed on its surface. The rear acoustic cavity and the front acoustic cavity are connected by a second waterproof and breathable membrane, and the first vent includes the sound outlet. When this electronic device is used for leak detection, an air pump can be selectively connected to the side of the sound outlet, or it can be connected to the side of the second vent. Taking the air pump connected to the side of the second vent as an example, when the enclosure structure of this electronic device leaks, the gas will flow along the cavity, enclosure structure, rear acoustic cavity, second waterproof and breathable membrane, and front acoustic cavity to the sound outlet. When the air pump is connected to the side of the sound outlet, and the enclosure structure leaks, the gas flow direction is opposite to the aforementioned direction.

[0015] In one example, a second insertion through hole is provided on the cavity wall of the rear acoustic chamber formed by the housing. Under normal conditions, a second insertion body is installed inside the second insertion through hole; the first vent includes the second insertion through hole.

[0016] When performing a rear acoustic cavity leak test, the second insert body is removed from the second insert through hole so that the rear acoustic cavity can be connected to the external atmosphere or connected to an air pump.

[0017] Alternatively, a second through hole is provided on the cavity wall of the sound chamber after the shell is formed, and the second through hole is covered with a third waterproof and breathable membrane, and the first ventilated part includes the second through hole;

[0018] When performing rear acoustic cavity leakage detection, the rear acoustic cavity is connected to the external atmosphere through a third waterproof and breathable membrane, or the air pump is connected to the second through hole. This embodiment eliminates the need to connect the front acoustic cavity; leakage detection of the rear acoustic cavity can be achieved using the second insertion through hole on the cavity wall of the rear acoustic cavity, avoiding airflow affecting related components of the front acoustic cavity.

[0019] In one example, the air pump's outlet is connected to either a first or second vent via a connecting pipe. The end of the connecting pipe furthest from the air pump is circumferentially sealed to the outer wall of the housing, and the first or second vent is located on the area of ​​the housing covered by the port. This embodiment allows the connecting pipe to directly connect to the housing, enabling smooth airflow from the pump into the first or second vent, facilitating easy connection.

[0020] This application embodiment also provides a method for detecting leakage in the rear acoustic cavity of an electronic device. The electronic device includes a housing, and the interior of the housing has a rear acoustic cavity and a chamber separated by a barrier structure. The surface of the housing also has a first vent and a second vent located on both sides of the barrier structure. The rear acoustic cavity can communicate with the external atmosphere of the electronic device through the first vent, and the chamber can communicate with the external atmosphere through the second vent.

[0021] Methods for detecting leakage in the rear acoustic cavity include:

[0022] Connect the air pump to either the first or the second vent, and connect the other to the external atmosphere of the electronic device.

[0023] Start the air pump to pump air and detect the gas flow rate at the location of the first vent and / or the second vent.

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

[0025] In one example, the second vent is a first insert through hole provided on the cavity wall of the chamber. Under normal conditions, an insert body is installed inside the first insert through hole.

[0026] When performing a rear acoustic cavity leakage test, the first insert body is first removed from the first insert through hole so that the cavity can be connected to the outside atmosphere through the first insert through hole, or connected to an air pump.

[0027] In one example, the first vent includes a second insertion through hole disposed in the cavity wall of the rear sound cavity, and under normal conditions, a second insertion body is installed inside the second insertion through hole;

[0028] When performing rear acoustic cavity leakage detection, first remove the second insert body from the second insert through hole so that the rear acoustic cavity can communicate with the external atmosphere of the electronic equipment through the second insert through hole, or the air pump.

[0029] Furthermore, this application also provides a method for detecting leakage in the rear acoustic cavity of an electronic device. The electronic device includes a housing, and the housing has a sound-emitting component, a front acoustic cavity, a rear acoustic cavity, and a chamber inside. The rear acoustic cavity and the chamber are separated by an enclosure structure. The method for detecting leakage in the rear acoustic cavity includes:

[0030] The sound outlet hole of the sealed front acoustic cavity;

[0031] Input commands are given to the control unit of the electronic device to control the sound-producing component to emit a sound at a predetermined frequency;

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

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

[0034] A sealing component used to seal the sound outlet hole of the front sound cavity of the sound-producing component;

[0035] An audio receiver is used to acquire the vibration sound of a specified side wall of the chamber;

[0036] The controller acquires the vibration sound signal of the back cover of the housing, and determines the loudness of the back cover based on the detected vibration sound signal. If the loudness exceeds the predetermined loudness range, the enclosure structure is found to be leaking.

[0037] In this embodiment of the 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, this application also provides a method for detecting leakage in the rear acoustic cavity of an electronic device. The electronic device includes a housing, and the housing contains a sound-emitting component, a front acoustic cavity, a rear acoustic cavity, and a chamber. The rear acoustic cavity and the chamber are separated by an enclosure structure, and the chamber has a communication port connecting to the external atmosphere of the electronic device. The method for detecting leakage in the rear acoustic cavity includes:

[0039] The sound outlet of the sealed front acoustic cavity;

[0040] Input commands are given to the control unit of the electronic device to control the sound-producing component to emit a sound at a predetermined frequency;

[0041] With the connection port on the first cavity in the open state and the audio receiver placed at the connection port, if the sound signal detected by the audio receiver exceeds a preset value, then there is a leak in the enclosure structure.

[0042] Furthermore, this application embodiment also provides a rear acoustic cavity leakage detection system for an electronic device. The electronic device includes a housing, and inside the housing are a sound-emitting component, a front acoustic cavity, a rear acoustic cavity, and a chamber. The rear acoustic cavity and the chamber are separated by an enclosure structure, and the chamber has a communication port connecting to the external atmosphere of the electronic device. The rear acoustic cavity leakage detection system includes:

[0043] A sealing component used to seal the sound outlet of the front acoustic chamber;

[0044] An audio receiver is used to acquire sound signals transmitted from the communication port of the chamber;

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

[0046] In this embodiment of the 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 acoustic cavity leakage detection method in this application embodiment is based on the rear acoustic cavity leakage detection system, and therefore also has the above-mentioned technical effects of the rear acoustic cavity leakage detection method. Attached Figure Description

[0048] Figure 1This is a three-dimensional schematic diagram of an electronic device provided in one embodiment of this 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 Schematic diagram of the AA section;

[0051] Figure 4 for Figure 1 The diagram shows the electronic device connected to the rear acoustic cavity leakage detection system.

[0052] Figure 5 This is a flowchart illustrating a rear acoustic cavity leakage detection method in one embodiment of this application;

[0053] Figure 6 A schematic diagram of a rear acoustic cavity leakage detection system for an electronic device provided in another embodiment of this application;

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

[0055] Figure 8 This is a schematic diagram of a rear acoustic cavity leakage detection system for an electronic device provided in another embodiment of this application;

[0056] Figure 9 This is a schematic diagram of a rear acoustic cavity leakage detection system for an electronic device provided in another embodiment of this application;

[0057] Figure 10 A schematic flowchart of a rear acoustic cavity leakage detection method provided in another embodiment of this application;

[0058] Figure 11 This is a schematic diagram of a rear acoustic cavity leakage detection system for an electronic device provided in another embodiment of this application;

[0059] Figure 12 This is a graph showing the frequency and loudness of the enclosure structure in the embodiments of this application under the scenarios of no leakage, one leakage location, and two leakage locations.

[0060] in, Figures 1 to 11 The one-to-one correspondence between the reference numerals and component names in the attached figures is shown below:

[0061] 100 Equipment 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 and breathable membrane; 106 Second waterproof and breathable membrane; 103 Third waterproof and breathable membrane; 100A' Third through hole; 100A Sound outlet hole; 1-2 Rear cover; 2 Display screen; 3 Light transmission hole; 4 First connector; 5 Sound-generating component; 6 Battery; 7 SIM card;

[0062] 200 Air pump; 210 Detection components; 220 Controller; 230 Connecting pipes;

[0063] 300 audio receiver. Specific Implementation

[0064] Currently, leakage in the rear acoustic cavity enclosed by the enclosure structure is mainly detected through the following methods: First, by detecting the audio frequency response of the sound emitted from the sound outlet of the sound-producing component. If the audio frequency response exceeds a preset range, leakage in the rear acoustic cavity is considered to exist. This method has relatively poor sensitivity, and there are scenarios where the vibration of the back cover of the electronic device exceeds the allowable amplitude range, but the audio frequency response still shows that it is within the preset range. Second, by using a laser method to non-contactly measure the amplitude of the housing. If the amplitude of the back cover exceeds the allowable amplitude range, leakage in the rear acoustic cavity is considered to exist. This method has low accuracy and is greatly affected by the material of the back cover. Third, by using an accelerometer to contact-measure the acceleration of the back cover. This method requires attaching accelerometer patches at different positions on the back cover, resulting in a long measurement cycle and making it unsuitable for mass production.

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

[0066] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0067] The electronic devices provided in this application can include handheld devices, in-vehicle devices, wearable devices, terminal devices, or other processing devices connected to a wireless modem. They can also include cellular phones, smartphones, personal digital assistant (PDA) computers, tablets, laptops, cameras, video recorders, smartwatches, smart wristbands, augmented reality (AR) devices, virtual reality (VR) devices, in-vehicle computers, and other devices. This application does not impose special limitations on the specific form of the above-mentioned electronic devices. For ease of understanding, the following description uses a mobile phone as an example.

[0068] Please combine Figure 1 , Figure 2 and Figure 3 understand, Figure 1 This is a three-dimensional schematic diagram of an electronic device provided in one embodiment of this 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 Schematic diagram of sectional view AA.

[0069] Please refer to Figure 1 The electronic device 100 provided in this application embodiment includes components such as a housing 1 and a display screen 2. The housing 1 primarily serves to support and protect the electronic components of the electronic device 100. Various electronic components of the electronic device 100 can be housed inside the housing 1. These electronic components include circuit boards, a battery module, a wireless communication module, and a camera module. Figure 1 The diagram shows a light-transmitting hole opposite the front camera module, a sound-emitting component 5, a battery 6, etc. The arrangement and installation method of these electronic components are not specifically limited in this embodiment. The sound-emitting component 5 may include a speaker, a speaker (Speek, SPK), or other components capable of emitting sound. Those skilled in the art should understand that the electronic device 100 may include one or more of the electronic components listed above; of course, the number and types of electronic components include, but are not limited to, those listed herein.

[0070] Depending on the specific electronic device 100, the structure of the housing 1 may vary.

[0071] In one specific embodiment of this application, such as Figure 1As shown, the housing 1 may include a middle frame 1-1 and a back cover 1-2, and the display screen 2 may be mounted on the side of the middle frame 1-1 opposite to 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 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, the housing 1 may be formed by injection molding a plastic body with a metal body as the skeleton to form an integral structure. The metal body may be made of aluminum alloy, stainless steel, titanium alloy, etc., and the plastic body may be made of polystyrene, polypropylene, polyethylene, etc. Of course, if the usage requirements are met, the housing 1 may also include only a plastic body, and the housing 1 may be formed by injection molding, or the housing 1 may also include only a metal body, and the housing 1 may be formed by machining.

[0072] In this embodiment of the application, the front of the electronic device 100 can be understood as the side facing the user when using the electronic device 100, that is... Figure 1 The side where the central display screen 2 is located, and the back 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 this embodiment, the display screen 2 includes a transparent cover 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 an electrophoretic display (E-Ink). As mentioned above, the display module includes several functional layers to realize image and video display. The number and specific structure of the functional layers can be referred to the above description and current technology, and will not be specifically described here. Currently, most display screens 2 of electronic devices 100 use OLEDs. The transparent cover covers the outside of the display module and serves to protect the display module. The transparent cover can be a glass cover, or other transparent materials that can provide protection, such as transparent polyimide. Display screen 2 can also have a touch function, that is, display screen 2 can be a touch screen.

[0074] Of course, the structure of the electronic device 100 is not limited to the structure described above; the positions of the display screen 2 and the back cover 1-2 can be interchanged. The electronic device 100 can also be a folding device, and it can have two or more display screens 2. This article uses... Figure 1 Taking the electronic device 100 shown as an example, we will continue to introduce the technical solution and technical effects.

[0075] Please refer to Figure 2 and Figure 3 It is understood that the housing 1 has a rear acoustic cavity 1011 inside, which is usually located on the side of the housing 1 opposite to the display screen 2. Specifically, the side of the housing 1 opposite to the display screen 2 has a mounting cavity, and a retaining structure 102 is provided inside the mounting cavity. The retaining structure 102 divides the mounting cavity into the rear acoustic cavity 1011 and a chamber 1012. That is, the housing 1 forms the rear acoustic cavity 1011 and the chamber 1012 on both sides of the retaining structure 102. The chamber 1012 houses the battery 6 and other related electronic devices. The rear acoustic cavity 1011 described herein 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 acoustic cavity 1011 is located on the side of the sound-emitting component 5 opposite to 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 adhesive. 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 means of adhesive or welding. The sound emitted by the sound-emitting surface of the sound-emitting component 5 is transmitted to the outside of the electronic device 100 through the sound outlet 100A after passing through the front sound cavity 1013. The front sound cavity 1013 and the rear sound cavity 1011 are also relatively isolated. The method of isolation between the two is not described in detail in this article, please refer to existing materials. Since the sound-generating component 5 needs to balance the air pressure before and after the diaphragm, a waterproof and breathable membrane is usually provided between the rear sound cavity 1011 and the front sound cavity 1013. In this way, the rear sound cavity 1011 can communicate with the external atmosphere of the electronic device 100 through the front sound cavity 1013, or the rear sound cavity 1011 can communicate with the external atmosphere through the channel provided on the housing 1.

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

[0078] As can be seen from the above description, in the embodiments of this application, the electronic device 100 has a rear sound cavity 1011 and a chamber 1012 on both sides of the enclosure structure 102. The surface of the housing 1 also has a first vent and a second vent located on both sides of the enclosure structure 102. The rear sound cavity 1011 can communicate with the outside atmosphere through the first vent, and the chamber 1012 can communicate with the outside atmosphere through the second vent. Figure 3 The image shows a specific embodiment where the second vent is the first insertion through hole 104 and the first vent is the sound outlet hole 100A of the front sound cavity 1013. Specific embodiments where the first and second vents have other structural forms are also given later in the text, as detailed in the following description.

[0079] Based on the structure of the electronic device 100 described above, this application provides a leakage detection method and system for the rear acoustic cavity 1011 that can detect whether leakage has occurred in the enclosure structure 102.

[0080] In this embodiment, the rear acoustic 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 introduce gas from the first vent to the rear acoustic cavity 1011 or from the second vent to the chamber 1012. The detection component 210 is used to detect the gas flow rate at at least one of the first or second vent locations. The controller 220 determines whether the gas flow rate detected by the detection component 210 exceeds a preset range; if the determination result is yes, then there is a leak in the enclosure structure 102. The above-described rear acoustic cavity 1011 leakage detection system... Figure 3 When performing leakage detection on the enclosure structure 102 in the electronic device 100 shown, the components can be connected in the following ways.

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

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

[0083] S10. Remove the first insert body 4 from the first insert through hole 104;

[0084] In this way, the chamber 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 and breathable membrane 106.

[0085] S11. Connect the air pump 200 to the first insertion through hole 104 and make the sound outlet 100A communicate with the external atmosphere of the electronic device 100.

[0086] S12. Start the air pump 200 to pump air and detect the gas flow rate at the first insertion through hole 104.

[0087] In this embodiment, the detection component 210 is installed on the connecting pipe between the air pump 200 and the first insertion through hole 104, and can detect the airflow rate on the connecting pipe.

[0088] S13. Determine whether the gas flow rate exceeds the preset range. If the gas flow rate exceeds the preset range, the enclosure structure 102 is leaking. If the gas flow rate is within the preset range, the enclosure structure 102 is considered to be leaking.

[0089] Theoretically, if the enclosure structure 102 has no leakage or the leakage is within the design requirements, the airflow will be confined inside the chamber 1012. Therefore, the value detected by the detection component 210 will be relatively small, meaning the detection value of the detection component 210 will be within the preset range. 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, resulting in a larger reading for the detection component 210. That is, when the gas flow rate detected by the detection component 210 exceeds the preset range, it can be considered that the enclosure structure 102 has a leakage, the electronic device 100 does not meet the design requirements, and the sound-emitting component 5 will produce phenomena such as shell vibration when it emits sound.

[0090] The judgment in step S13 can be made by the controller 220, thus automating the detection process. Of course, in some other embodiments, the operator can also make the judgment by observing the readings of the detection component 210.

[0091] When performing leakage detection, the rear acoustic cavity 1011 leakage detection system provided in this application embodiment only needs to connect one of the rear acoustic cavities 1011 and chambers 1012 on both sides of the enclosure structure 102 to the air pump 200 and the other to the outside atmosphere. After starting the air pump 200 to pump air, the airflow value detected by the detection component 210 can determine whether there is a leakage in the enclosure structure 102. The detection method is simple and fast, and the reliability of the detection results is relatively high.

[0092] In particular, in the above embodiments, the first insertion through hole 104 is a structural hole that exists to realize the function of the electronic device 100 itself. In this way, the presence of leakage in the enclosure structure 102 can be realized by means of the structure of the electronic device 100 itself. Leakage detection of the rear sound cavity 1011 can be realized without setting a new structure on the electronic device 100. Furthermore, when the first insertion through hole 104 is a SIM card 7 slot or a memory card slot, such slots generally have a relatively large flow area, which is conducive to the smooth airflow of the air pump 200 into the cavity 1012 and improves the detection efficiency of the detection system.

[0093] In step S12 above, the air pump 200 is connected to one side of the first insertion through hole 104. Of course, the air pump 200 can also be connected to one side of the sound outlet hole 100A. Similarly, it is also feasible to install the detection component 210 on one side of the sound outlet hole 100A.

[0094] Figure 4 The first vent in the illustrated electronic device 100 is a structure that can connect to the external atmosphere under normal conditions, while the second vent is a structure that is normally closed. That is, the second vent has both open and closed states. When the second vent is open, the chamber 1012 connects to the external atmosphere through the second vent. When the electronic device 100 is in normal use, the second vent can be closed. Of course, the structures of the second and first vents are not limited to the above structures. The second vent can also be a structure that connects to the external atmosphere under normal conditions, and the first vent can also have both open and closed states. Several feasible implementations of the first and second vents are given below. Other structures of the electronic device 100 are basically the same. Figure 3 same.

[0095] Please refer to Figure 6 , Figure 6 The electronic device 100 shown is Figure 3 The main difference between the electronic device 100 shown lies in the structure of the first and second vents; other structures can be referenced. Figure 3 and Figure 4 The description. Figure 7The second vent is a first through hole 104' located on the cavity wall of the chamber 1012. Specifically, the first through hole 104' is located on the cavity wall of the chamber 1012 on the side away from the rear sound cavity 1011. The first through hole 104' is covered by a first waterproof and breathable membrane 105. That is, under normal conditions, the chamber 1012 is connected to the outside atmosphere through the first waterproof and breathable membrane 105.

[0096] Figure 6 The first vent is a second through hole 100A' provided on the housing 1. The second through hole 100A' is covered by a third waterproof and 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 a leak test on the rear acoustic cavity 1011, the air pump 200 can be connected to either the first through hole 104' or the second through hole 100A'. Figure 6 A schematic diagram is shown showing the air pump 200 connected to the first through hole 104'. The detection method and detection principle of this embodiment are similar to... Figure 3 They are basically the same, except that: under normal conditions, both the chamber 1012 and the rear sound chamber 1011 in this embodiment are in communication with the outside atmosphere, and can be directly connected to components such as the air pump 200 without disassembling the connector, thus improving detection efficiency.

[0098] Please see Figure 7 ,and Figure 6 The difference is, Figure 7 The second vent of the provided electronic device 100 ( Figure 7 The first waterproof and breathable membrane (position 105) is located on the rear shell 1-2, and other structures are the same as those in the middle. Figure 6 same. Figure 7 The diagram shows the air pump 200 connected to the second through hole 100A', but the air pump 200 can also be connected to the first through hole 104'. Figure 7 The first waterproof and breathable membrane 105 covers one side of the first through hole 104'. The specific leakage detection method will not be described in detail here.

[0099] Please see Figure 8 , Figure 8 The sound-generating component 5 is not shown in the diagram; the cross-sectional direction is the same as... Figure 2 The AA section has the same direction and is located at the same position. Figure 2 The second insert (not shown in the diagram) on the right or left side of AA should not affect the installation of the sound-generating component 5. Figure 6 compared to, Figure 8The difference lies in that a second insertion through hole 100A” is provided on the cavity wall at the rear acoustic cavity 1011 position. Under normal conditions, 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 a SIM card 7 or a memory card insertion hole, and the second insertion body can be a SIM card 7 tray or a memory card tray. Figure 8 Other structures of the electronic device shown can be found in the section on Figure 6 and Figure 3 Description of electronic devices.

[0100] In this embodiment, the air pump 200 can be connected to the second insert through hole 100A” or the first through hole 104”. Figure 8 An example is shown where the air pump 200 is connected to the second insert through-hole 100A”. Compared with the first through-hole 104’, the second insert through-hole 100A” has a larger flow area, which facilitates the inflation of air into the rear acoustic 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 shown is identical to 100, and will not be described further here. Please refer to... Figure 10 It is understood that this application embodiment also provides a method for detecting leakage in the rear acoustic cavity 1011, specifically including:

[0102] S31, the front sound cavity 1013 and sound outlet 100A of the sealed sound-generating component 5;

[0103] Accordingly, the leakage detection system of the rear acoustic cavity 1011 in this embodiment of the application has a sealing component 310. The sound outlet 100A of the front acoustic cavity 1013 can be sealed by the sealing component. The sealing component can be of the following types: First sealing method: Please refer to Figure 9 The sealing component 310 is a tooling fixture. This fixture has a contoured surface that abuts against the housing 1 located circumferentially around the sound outlet 100A for sealing. Alternatively, external force can be used to abut against the housing 1 to improve the seal. Furthermore, elastic components such as foam can be added between the contoured surface and the housing 1 to further enhance the sealing performance. This sealing method primarily uses the tooling fixture abutting against the housing 1 for sealing, minimizing impact on the structure of the sound outlet 100A and providing high sealing reliability. The second sealing method uses tape or foam as the sealing component, directly sealing the sound outlet 100A. This sealing method is simple.

[0104] S32. Input instructions to the control unit of the electronic device 100 to control the sound-emitting unit 5 to emit a sound at a predetermined frequency;

[0105] The inventors of this application discovered through research that once the rear acoustic cavity 1011 leaks, the lower the frequency of the sound emitted by the sound-emitting 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 the low-frequency sound is 20Hz to 500Hz. The control component can be the motherboard of the electronic device 100, which controls the operating parameters of the sound-emitting component 5.

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

[0107] In this embodiment, the rear acoustic cavity 1011 leakage detection system includes an audio receiver 300 for acquiring sound signals transmitted 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 space behind the display screen 2 into the rear acoustic cavity 1011 and the cavity 1012, the audio receiver can be approximately located in the center of the cavity 1012. The vibration amplitude of the housing 1 is greatest at the center of the cavity 1012, and correspondingly, the detected sound is also relatively loud. The audio receiver 300 can be a microphone or other components capable of sound pickup.

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

[0109] In this embodiment of the 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, inside which are a sound-emitting 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 a enclosure structure 102. The chamber 1012 has a communication port connecting to the external atmosphere of the electronic device 100. The structure of the communication port can be referred to... Figure 4 The first insertion hole 104 in, or Figure 6 The first through-hole 104' in the structure. The specific structure of the electronic device 100 in this embodiment is basically the same as that in the embodiment. Figure 3 The electronic device 100 shown is identical. This application embodiment also provides a method for detecting leakage in the rear acoustic cavity 1011, specifically including:

[0111] S41, the front sound cavity 1013 and sound outlet 100A of the sealed sound-generating component 5;

[0112] The sealing method for the sound outlet 100A in this step can be referred to in step S31, and will not be repeated here.

[0113] S42. Input instructions to the control unit of the electronic device 100 to control the sound-emitting unit 5 to emit a sound at a predetermined frequency;

[0114] The conditions for the predetermined frequency can be referred to the description in step S32. The control component can be the motherboard of the electronic device 100, which controls the operating parameters of the sound-emitting component 5.

[0115] S43. With the connection port on the first cavity in the open state, place the audio receiver at the connection port position to detect the sound signal. If the sound signal exceeds the preset value, the enclosure structure 102 has leakage; otherwise, the enclosure structure 102 has no leakage.

[0116] In this step, the first cavity can be connected to the external atmosphere through a connecting port. This port can be a SIM card slot, a memory card slot, or a charging port, etc. For leak detection, simply remove the SIM card or memory card from the connecting port. Of course, the connection port setup method in this step can also be referenced... Figure 7 The setting of the first through hole 104' (the position indicated by the first waterproof and breathable membrane 105).

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

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

[0119] In response to the above-mentioned detection method, this application further conducted simulation experiments, please refer to the embodiments therein. Figure 12 , Figure 12 The horizontal axis of the coordinate system represents the sound frequency, measured in Hertz (Hz), and the vertical axis represents the sound loudness, measured in decibels (dB). Figure 12The diagram shows three curves, f1, f2, and f3. f1 represents the relationship between sound frequency and detected loudness when the leakage of the enclosure structure 102 meets design requirements; f2 represents the relationship between sound frequency and detected loudness when the enclosure structure 102 has one leakage point; and f3 represents the relationship between sound frequency and detected loudness when the enclosure structure 102 has two leakage points. Figure 12 As can be seen, the greater the leakage of the enclosure structure 102, the greater the loudness reading.

[0120] The two implementation methods described above can detect whether the rear acoustic cavity 1011 is leaking using only an audio receiver. They are simple in structure and 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 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 construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0123] The directional terms mentioned in the embodiments of this application, such as "inner" and "outer", are only for reference to the direction of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

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

[0125] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0126] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A rear acoustic cavity leakage detection system for an electronic device, characterized in that, The electronic device includes a housing, the interior of which has a rear acoustic cavity and a chamber separated by a barrier structure. The surface of the housing also has a first vent and a second vent located on both sides of the barrier structure. The rear acoustic cavity is connected to the outside atmosphere through the first vent, and the chamber is connected to the outside atmosphere through the second vent. At least one of the first vent or the second vent is closed during use of the electronic device. The rear acoustic cavity leakage detection system is used to detect whether there is a leakage in the enclosure structure. The rear acoustic cavity leakage detection system includes: An air pump is used to introduce gas from the first vent to the rear acoustic cavity or from the second vent to the chamber. The detection component is used to detect the gas flow rate at at least one of the first vent or the second vent. The controller is electrically connected to the detection component to receive the gas flow signal detected by the detection component; During testing, both the first and second vents are in the open state. An air pump is connected to either the first or the second vent, while the other is connected to the external atmosphere of the electronic device. The controller determines whether the gas flow detected by the detection component exceeds a preset range. If the determination result is yes, then the enclosure structure has a leak.

2. The rear acoustic cavity leakage detection system as described in claim 1, characterized in that, The cavity wall of the housing surrounding the chamber is provided with a first insertion through hole. Under normal conditions, an insertion body is installed inside the first insertion through hole; the second venting part includes the first insertion through hole. When performing the rear acoustic cavity leakage detection, the insert body is removed from the first insert through hole so that the cavity can be connected to the external atmosphere or to the air pump.

3. The rear acoustic cavity leakage detection system as described in claim 1, characterized in that, The second ventilated part includes a first through hole disposed in the cavity wall of the chamber, and the first through hole is covered with a first waterproof and breathable membrane; When the rear acoustic cavity is leaked, the cavity is connected to the external atmosphere through the first waterproof and breathable membrane, or the air pump is connected to the first through hole.

4. The rear acoustic cavity leakage detection system as described in any one of claims 1 to 3, characterized in that, The electronic device also 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 by a second waterproof and breathable membrane, and the second breathable part includes the sound outlet.

5. The rear acoustic cavity leakage detection system as described in any one of claims 1 to 3, characterized in that, The housing has a second insertion through hole on the cavity wall that forms the rear sound cavity. Under normal conditions, a second insertion body is installed inside the second insertion through hole; the first vent includes the second insertion through hole. When performing the rear acoustic cavity leakage detection, the second insert body is removed from the second insert through hole so that the rear acoustic cavity can be connected to the external atmosphere or connected to the air pump; Alternatively, the housing may have a second through hole on the cavity wall surrounding the rear sound cavity, the second through hole being covered by a third waterproof and breathable membrane, and the first breathable part including the second through hole; When the rear acoustic cavity is leaked, the rear acoustic cavity is connected to the external atmosphere through the third waterproof and breathable membrane, or the air pump is connected to the second through hole.

6. The rear acoustic cavity leakage detection system as described in any one of claims 1 to 3, characterized in that, The air outlet of the air pump is connected to the first or second venting part through a connecting pipe. The end of the connecting pipe away from the air pump is circumferentially sealed to the outer wall of the housing, and the first or second venting part is located on the area of ​​the housing covered by the port.

7. A method for detecting leakage in the rear acoustic cavity of an electronic device, characterized in that, The electronic device includes a housing, the interior of which has a rear acoustic cavity and a chamber separated by a retaining structure. The surface of the housing also has a first vent and a second vent located on both sides of the retaining structure. The rear acoustic cavity is connected to the external atmosphere of the electronic device through the first vent, and the chamber is connected to the external atmosphere through the second vent. At least one of the first vent or the second vent is closed during use of the electronic device. The rear acoustic cavity leakage detection method is used to detect whether there is a leakage in the enclosure structure, and includes: With both the first and second vents open, connect the air pump to either the first or the second vent, and connect the other to the external atmosphere of the electronic device. The air pump is started to pump air, and the gas flow rate at the location of the first vent and / or the second vent is detected; Determine whether the gas flow rate exceeds a preset range. If the gas flow rate exceeds the preset range, then the enclosure structure is leaking.

8. The method for detecting leakage in the rear acoustic cavity of an electronic device as described in claim 7, characterized in that, The second vent 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 acoustic cavity leakage test, the insert body is first removed from the first insert through hole so that the cavity can communicate with the external atmosphere through the first insert through hole, or connected to the air pump.

9. The method for detecting leakage in the rear acoustic cavity of an electronic device as described in claim 7 or 8, characterized in that, The first venting part includes a second insertion through hole disposed in the cavity wall of the rear sound cavity. Under normal conditions, a second insertion body is installed inside the second insertion through hole. When performing the rear acoustic cavity leakage detection, the second insert body is first removed from the second insert through hole so that the rear acoustic cavity can communicate with the external atmosphere of the electronic device or the air pump through the second insert through hole.

Images